CN113973359A - Communication method and device - Google Patents

Communication method and device Download PDF

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Publication number
CN113973359A
CN113973359A CN202010734069.2A CN202010734069A CN113973359A CN 113973359 A CN113973359 A CN 113973359A CN 202010734069 A CN202010734069 A CN 202010734069A CN 113973359 A CN113973359 A CN 113973359A
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China
Prior art keywords
terminal device
identifier
message
core network
paging
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CN202010734069.2A
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Chinese (zh)
Inventor
才宇
姚楚婷
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN202010734069.2A priority Critical patent/CN113973359A/en
Priority to PCT/CN2021/106287 priority patent/WO2022017237A1/en
Publication of CN113973359A publication Critical patent/CN113973359A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application relates to a communication method and device. The first terminal device sends a first identifier to the first core network device, the first identifier is an identifier of the second terminal device or an identifier of the first terminal device, and the first terminal device provides a relay service for the second terminal device or the second terminal device provides a relay service for the first terminal device. The first terminal device receives a second identifier allocated to the first terminal device from the first core network device, a paging occasion corresponding to the second identifier is the same as a paging occasion of the second terminal device, or a time domain distance between the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device is smaller than or equal to a first threshold, or the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device are partially overlapped or completely overlapped in a time domain. By setting the identifiers of the two terminal devices, POs determined according to the identifiers of the two terminal devices are the same or similar, so that the power consumption of the relay terminal device for monitoring paging is reduced.

Description

Communication method and device
Technical Field
The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.
Background
At present, a terminal device may communicate with a base station through other terminal devices in addition to directly communicating with the base station. For example, in a public safety (public safety) scenario, a relay (relay) terminal device may act as a relay for a remote terminal device, so that the remote terminal device can communicate with a base station through the relay terminal device, which is referred to as a user equipment to network relay (UE 2NW relay) technology.
Under this technique, the remote terminal device can receive a page (paging) from the network through the relay terminal device. Specifically, the relay terminal device monitors paging for the remote terminal device in addition to monitoring paging of the relay terminal device, and sends the paging of the remote terminal device to the remote terminal device.
In order to monitor paging of the remote terminal, the relay terminal needs to monitor Paging Occasions (POs) of the remote terminal. However, the POs of the relay terminal device and the PO of the remote terminal device may be different, so the relay terminal device needs to wake up to monitor the paging of the remote terminal device in an extra time except for the PO of the relay terminal device, which increases the power consumption of the relay terminal device.
Disclosure of Invention
The embodiment of the application provides a communication method and device, which are used for reducing the power consumption of terminal equipment.
In a first aspect, a first communication method is provided, the method including: a first terminal device sends a first identifier to a first core network device, wherein the first identifier is an identifier of a second terminal device, or the first identifier is an identifier of the first terminal device, and the first terminal device provides a relay service for the second terminal device, or the second terminal device provides a relay service for the first terminal device; the first terminal device receives a second identifier from the first core network device, where the second identifier is a new identifier allocated to the first terminal device, where a paging occasion corresponding to the second identifier is the same as a paging occasion of the second terminal device, or a time domain distance between the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device is smaller than or equal to a first threshold, or the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device are partially overlapped or completely overlapped in a time domain.
The method may be performed by a first communication device, which may be a communication apparatus or a communication device, e.g. a chip, capable of supporting the communication apparatus to implement the functionality required for the method. Illustratively, the first communication device is a terminal device, or a chip provided in the terminal device for implementing a function of the terminal device, or another component for implementing a function of the terminal device. In the following description, the first communication device is taken as an example of a terminal device, for example, a first terminal device.
The PO of one terminal device is related to the identity of the terminal device, and if the identities of two terminal devices are different, the POs of the two terminal devices may be different. Therefore, in the embodiment of the present application, the identifiers of the two terminal devices may be set, so that the POs determined according to the identifiers of the two terminal devices are the same, for example, the second terminal device is a relay terminal device, and the first terminal device is a remote terminal device, so that the second terminal device can monitor the paging of the first terminal device and the paging of the second terminal device on the same PO, and does not need to wake up in more time to monitor the paging, which is beneficial to reducing the power consumption of the first terminal device; or, the POs determined according to the identifiers of the two terminal devices may be close in the time domain, and the second terminal device may monitor the paging of the first terminal device and the paging of the second terminal device in a close time, for example, after monitoring the paging of one terminal device, the second terminal device may not enter the sleep state, but enter the sleep state after the paging of the other terminal device is monitored, and since the POs of the two terminal devices are close in the time domain, the power consumption caused by the waiting of the second terminal device may be smaller than the power consumption caused by waking up after the sleep; or, the POs determined according to the identifiers of the two terminal devices may partially overlap or completely overlap in the time domain, and in the time domain range where the POs overlaps, the second terminal device may monitor the paging of the first terminal device and also the paging of the second terminal device.
With reference to the first aspect, in a first alternative implementation of the first aspect,
the UE _ ID corresponding to the second identifier is the same as the UE _ ID corresponding to the identifier of the second terminal equipment; or,
the UE _ ID mod N corresponding to the second identifier is the same as the UE _ ID mod N corresponding to the identifier of the second terminal equipment; or,
UE _ ID mod (N) corresponding to the second identifiers) UE _ ID mod (N) corresponding to the identity of the second terminal devices) The same; or,
the difference value between the UE _ ID corresponding to the second identifier and the UE _ ID corresponding to the identifier of the second terminal equipment is smaller than or equal to a second threshold value; or,
the difference value between the UE _ ID mod N corresponding to the second identifier and the UE _ ID mod N corresponding to the identifier of the second terminal equipment is smaller than or equal to a third threshold value; or,
UE _ ID mod (N) corresponding to the second identifiers) UE _ ID mod (N) corresponding to the identity of the second terminal devices) The difference therebetween is less than or equal to a fourth threshold; or,
floor (UE _ ID/N) mod N corresponding to the second identifiersFloor (UE _ ID/N) mod N corresponding to the identity of the second terminal devicesThe difference therebetween is less than or equal to a fifth threshold.
The paging occasion corresponding to the second identifier is the same as the paging occasion of the second terminal device, or a time-domain distance between the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device is smaller than or equal to a first threshold, or the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device are partially overlapped or completely overlapped in a time domain, which may also be replaced with the seventh item described in the first optional implementation manner of the first aspect. I.e. three relations between POs as above, and seven relations between identities as above, which can be substituted for each other. For example, the technical solution of the embodiment of the present application may be considered to enable the PO of the first terminal device and the PO of the second terminal device to satisfy three relationships between the POs, or may also be considered to enable the identifier of the first terminal device and the identifier of the second terminal device to satisfy seven relationships between the POs.
For example, the method of the first aspect may also be modified to: a first terminal device sends a first identifier to a first core network device, wherein the first identifier is an identifier of a second terminal device, or the first identifier is an identifier of the first terminal device, and the first terminal device provides a relay service for the second terminal device, or the second terminal device provides a relay service for the first terminal device; the first terminal device receives a second identifier from the first core network device, where the second identifier is a new identifier assigned to the first terminal device,
the UE _ ID corresponding to the second identifier is the same as the UE _ ID corresponding to the identifier of the second terminal equipment; or,
the UE _ ID mod N corresponding to the second identifier is the same as the UE _ ID mod N corresponding to the identifier of the second terminal equipment; or,
UE _ ID mod (N) corresponding to the second identifiers) UE _ ID mod (N) corresponding to the identity of the second terminal devices) The same; or,
the difference value between the UE _ ID corresponding to the second identifier and the UE _ ID corresponding to the identifier of the second terminal equipment is smaller than or equal to a second threshold value; or,
the difference value between the UE _ ID mod N corresponding to the second identifier and the UE _ ID mod N corresponding to the identifier of the second terminal equipment is smaller than or equal to a third threshold value; or,
UE _ ID mod (N) corresponding to the second identifiers) UE _ ID mod (N) corresponding to the identity of the second terminal devices) The difference therebetween is less than or equal to a fourth threshold; or,
floor (UE _ ID/N) mod N corresponding to the second identifiersFloor (UE _ ID/N) mod N corresponding to the identity of the second terminal devicesThe difference therebetween is less than or equal to a fifth threshold.
Accordingly, the first optional implementation manner of the first aspect may also be changed to:
the paging occasion corresponding to the second identifier is the same as the paging occasion of the second terminal device, or a time-domain distance between the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device is smaller than or equal to a first threshold, or the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device are partially or completely overlapped in a time domain.
With reference to the first aspect or the first optional implementation manner of the first aspect, in a second optional implementation manner of the first aspect, the method further includes:
the first terminal device receives the identification of the second terminal device from the second terminal device.
The second terminal device may first send the identifier of the second terminal device to the first terminal device, and then the first terminal device sends the first identifier to the first core network device, for example, the first identifier is the identifier of the second terminal device.
With reference to the first aspect or the first optional implementation manner of the first aspect or the second optional implementation manner of the first aspect, in a third optional implementation manner of the first aspect, the first identifier is 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N × N)s) Wherein N represents the total number of paging frames included in one DRX period, and NsIndicating the total number of paging occasions a paging frame includes, UE _ ID is 5G-S-TMSI mod 1024, mod modulo.
Here, the embodiments are only examples of several implementations of the first identifier, and the embodiments of the present application do not limit the implementations of the first identifier.
With reference to the first aspect or any one of the first to third alternative embodiments of the first aspect, in a fourth alternative embodiment of the first aspect,
the second terminal device provides a relay service for the first terminal device, the first identifier is further used for indicating that the first terminal device requests to monitor a paging message through the second terminal device; or,
the method further comprises the following steps: and the first terminal equipment sends a first message to the first core network equipment, wherein the first message is used for indicating the first terminal equipment to request to monitor a paging message through the second terminal equipment.
The indication by the first message instructing the first terminal device to request listening to pages by the second terminal device may be made more explicit. Or, the first terminal device may also not send the first message to the first core network device, but only needs to send the first identifier to the first core network device, and the first identifier may also indicate the first terminal device to request to monitor paging through the second terminal device. This is also an implicit indication mode, which can reduce the amount of signaling and save signaling overhead.
With reference to the fourth optional implementation manner of the first aspect, in a fifth optional implementation manner of the first aspect, the first message is a registration request message, or the first message is a message for requesting a service.
For example, the first message may be a newly added message in the embodiment of the present application, and is dedicated to instruct the first terminal device to request to monitor paging through the second terminal device, for example, the first message is an NAS message; alternatively, the first message may also be a currently existing message, for example, the first message may be a registration request message of the first terminal device, or a message that the first terminal device requests a service, or may also be a message that instructs the first terminal device to communicate with the network through the second terminal device (or instructs the second terminal device to provide a relay service for the first terminal device), and the like.
With reference to the first aspect or any one of the first to fifth alternative embodiments of the first aspect, in a sixth alternative embodiment of the first aspect,
the second terminal device provides a relay service for the first terminal device, and the second identifier is further used for indicating to allow the first terminal device to monitor a paging message through the second terminal device; or,
the method further comprises the following steps: and the first terminal equipment receives a second message from the first core network equipment, wherein the second message is used for indicating that the first terminal equipment is allowed to monitor the paging message through the second terminal equipment.
The indication by the second message allows the first terminal device to listen to pages by the second terminal device, which may make the indication more explicit. Or, the first core network device may also not send the second message to the first terminal device, but only needs to send the second identifier to the first terminal device, and the second identifier may also indicate that the first terminal device is allowed to monitor paging through the second terminal device. This is also an implicit indication mode, which can reduce the amount of signaling and save signaling overhead.
With reference to the first aspect or any one of the first to sixth optional embodiments of the first aspect, in a seventh optional embodiment of the first aspect, the method further comprises:
the first terminal equipment receives a second DRX period from the second terminal equipment, wherein the second DRX period is the DRX period of the second terminal equipment;
and the first terminal equipment and the first core network equipment determine a first DRX period through negotiation, wherein the first DRX period is the DRX period of the first terminal equipment, and the first DRX period is greater than or equal to the second DRX period.
It is considered that if the DRX cycle of the first terminal device is smaller than the DRX cycle of the second terminal device, the third DRX cycle may be the DRX cycle of the first terminal device, that is, the second terminal device needs to monitor with a smaller DRX cycle than the DRX cycle of the second terminal device in order to monitor paging for the first terminal device, which may increase the power consumption of the second terminal device to some extent. Therefore, as an optional implementation manner, the first DRX cycle and the second DRX cycle may be determined through negotiation, and the second DRX cycle is made to be less than or equal to the first DRX cycle as much as possible, so that the second terminal device may monitor according to the DRX cycle of the second terminal device, and may monitor not only the paging of the first terminal device but also the paging of the second terminal device, without bringing extra power consumption to the second terminal device.
With reference to the first aspect or any one of the first optional implementation manner of the first aspect to the seventh optional implementation manner of the first aspect, in an eighth optional implementation manner of the first aspect, the second terminal device provides a relay service for the first terminal device, and the method further includes:
the first terminal device sends a third message to the second terminal device, wherein the third message is used for requesting to monitor a paging message through the second terminal device;
and the first terminal equipment receives a fourth message from the second terminal equipment, wherein the fourth message is used for indicating that the first terminal equipment monitors paging messages.
The first terminal device may send a third message to the second terminal device to cause the second terminal device to explicitly request the second terminal device to listen for pages.
With reference to the first aspect or any one of the first optional implementation manner of the first aspect to the seventh optional implementation manner of the first aspect, in a ninth optional implementation manner of the first aspect, the first terminal device provides a relay service for the second terminal device, and the method further includes:
The first terminal device receives a third message from the second terminal device, wherein the third message is used for requesting to monitor a paging message through the first terminal device;
and the first terminal equipment sends a fourth message to the second terminal equipment, wherein the fourth message is used for indicating that the second terminal equipment monitors the paging message.
If the second terminal device provides the relay service for the first terminal device, the second terminal device may send a third message to the first terminal device, so that the first terminal device explicitly requests the second terminal device to monitor paging.
With reference to the ninth optional implementation manner of the first aspect, in a tenth optional implementation manner of the first aspect, the method further includes:
and the first terminal equipment monitors paging messages for the second terminal equipment according to a third DRX cycle, wherein when the first DRX cycle is greater than or equal to the second DRX cycle, the third DRX cycle is the second DRX cycle, or when the first DRX cycle is smaller than the second DRX cycle, the third DRX cycle is the first DRX cycle, the first DRX cycle is the DRX cycle of the first terminal equipment, and the second DRX cycle is the DRX cycle of the second terminal equipment.
For example, the DRX cycle of the first terminal device is referred to as a first DRX cycle, the DRX cycle of the second terminal device is referred to as a second DRX cycle, and the second terminal device may monitor paging for the first terminal device according to the third DRX cycle. Wherein the third DRX cycle may be the first DRX cycle if the first DRX cycle is less than or equal to the second DRX cycle; alternatively, the third DRX cycle may be the second DRX cycle if the first DRX cycle is greater than the second DRX cycle. That is, the second terminal device may monitor paging for the first terminal device at a smaller DRX cycle to reduce the probability of missing a page for the first terminal device.
With reference to the first aspect or any one of the first optional implementation manner of the first aspect to the seventh optional implementation manner of the first aspect, in an eleventh optional implementation manner of the first aspect, the first terminal device provides a relay service for the second terminal device, and the method further includes:
and the first terminal equipment receives a fifth message from the first core network equipment, wherein the fifth message is used for indicating the second terminal equipment to monitor the paging message through the first terminal equipment.
If the first terminal device provides the relay service for the second terminal device, the first core network device may notify the first terminal device to monitor paging for the second terminal device without the second terminal device requesting the first terminal device.
With reference to the eleventh optional implementation manner of the first aspect, in a twelfth optional implementation manner of the first aspect, the fifth message further includes an identifier of the second terminal device or a third identifier, and/or includes a second DRX cycle, where the third identifier is an identifier determined according to the identifier of the second terminal device, and the second DRX cycle is a DRX cycle of the second terminal device.
The fifth message may include the identity of the second terminal device or the third identity, which may enable the first terminal device to ascertain the identity of the second terminal device and thereby listen for pages for the second terminal device. The fifth message may also include a second DRX cycle such that the first terminal device may monitor paging for the second terminal device according to the second DRX cycle.
With reference to the first aspect or any one of the first to the twelfth optional implementations of the first aspect, in a thirteenth optional implementation of the first aspect, the second terminal device provides a relay service for the first terminal device, and the method further includes:
And the first terminal equipment receives a third indication message from the first core network equipment, wherein the third indication message is used for indicating that the first terminal equipment does not monitor the paging message through the second terminal equipment any more.
The third indication message may be used to indicate that the second terminal device is no longer listening for pages, or to indicate that the first terminal device and the second terminal device are no longer associated, or to indicate that pages are listened for from the network. By the method provided by the embodiment of the application, the first terminal device can monitor the paging through the second terminal device (or the second terminal device monitors the paging through the first terminal device), and the first terminal device can also cancel the paging monitored through the second terminal device (or the second terminal device monitors the paging through the first terminal device), so that the paging monitoring mode of the terminal device is more flexible.
With reference to the thirteenth optional implementation manner of the first aspect, in a fourteenth optional implementation manner of the first aspect, the method further includes:
and the first terminal equipment sends a first indication message to the first core network equipment, wherein the first indication message is used for requesting no more monitoring of the paging message through the second terminal equipment.
If the first terminal device considers that the paging does not need to be monitored by the second terminal device, the first terminal device may send a first indication message to the first core network device to request that the paging is not monitored by the second terminal device.
With reference to the thirteenth optional implementation manner of the first aspect or the fourteenth optional implementation manner of the first aspect, in a fifteenth optional implementation manner of the first aspect, the method further includes:
and the first terminal equipment sends a fourth indication message to the second terminal equipment, wherein the fourth indication message is used for indicating that the paging message is not monitored by the second terminal equipment any more.
The first terminal device may notify the second terminal device that the first terminal device is no longer listening for pages by the second terminal device. After receiving the fourth indication message, the second terminal device may no longer monitor paging for the second terminal device, so as to reduce power consumption of the second terminal device, and enable the first terminal device to receive paging through other approaches (e.g., air interfaces).
In a second aspect, a second communication method is provided, the method comprising: a first core network device receives a first identifier from a first terminal device, where the first identifier is used to determine a new identifier for the first terminal device, and the first identifier is an identifier of a second terminal device or an identifier of the first terminal device, where the first terminal device provides a relay service for the second terminal device or the second terminal device provides a relay service for the first terminal device; and the first core network device determines the identifier of the first terminal device as a second identifier according to the first identifier, wherein the paging occasion corresponding to the second identifier is the same as the paging occasion of the second terminal device, or the time domain distance between the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device is smaller than or equal to a first threshold, or the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device are partially overlapped or completely overlapped in the time domain.
The method may be performed by a second communication device, which may be a communication apparatus or a communication device, e.g. a chip, capable of supporting the communication apparatus to perform the functions required by the method. Illustratively, the second communication device is a network device, or a chip provided in the network device for implementing the functions of the network device, or other components for implementing the functions of the network device. In the following description, the second communication device is, for example, a network device, such as a first core network device.
In combination with the second aspect, in a first alternative embodiment of the second aspect,
the UE _ ID corresponding to the second identifier is the same as the UE _ ID corresponding to the identifier of the second terminal equipment; or,
the UE _ ID mod N corresponding to the second identifier is the same as the UE _ ID mod N corresponding to the identifier of the second terminal equipment; or,
UE _ ID mod (N) corresponding to the second identifiers) UE _ ID mod (N) corresponding to the identity of the second terminal devices) The same; or,
the difference value between the UE _ ID corresponding to the second identifier and the UE _ ID corresponding to the identifier of the second terminal equipment is smaller than or equal to a second threshold value; or,
the difference value between the UE _ ID mod N corresponding to the second identifier and the UE _ ID mod N corresponding to the identifier of the second terminal equipment is smaller than or equal to a third threshold value; or,
UE _ ID mod (N) corresponding to the second identifiers) UE _ ID mod (N) corresponding to the identity of the second terminal devices) The difference therebetween is less than or equal to a fourth threshold; or,
the second identification corresponds toFloor (UE _ ID/N) mod NsFloor (UE _ ID/N) mod N corresponding to the identity of the second terminal devicesThe difference therebetween is less than or equal to a fifth threshold.
Similarly, the three relationships between POs as above and the seven relationships between the identifications as above may be substituted for each other, and reference may be made to the description of the first aspect or the corresponding embodiments.
With reference to the second aspect or the first optional implementation manner of the second aspect, in a second optional implementation manner of the second aspect, the determining, by the first core network device, that the identifier of the first terminal device is the second identifier according to the first identifier includes:
the first core network device determines a third identifier according to the first identifier, where the third identifier is an identifier of the second terminal device having a relay relationship with the first terminal device, or an identifier determined according to the identifier of the second terminal device;
and the first core network equipment distributes the second identifier to the first terminal equipment according to the third identifier.
If the first identifier is an identifier of the first terminal device, the first core network device may query a second terminal device that determines to have an association with the first terminal device, for example, the first core network device may determine, by querying subscription data of the first terminal device, the second terminal device that has an association with the first terminal device, so as to determine an identifier of the second terminal device, for example, the determined identifier of the second terminal device is a third identifier, and the first core network device may determine, according to the third identifier, the identifier of the first terminal device is a second identifier. Or, if the first identifier is the identifier of the second terminal device, the first core network device may also convert the first identifier first, that is, the first core network device determines the third identifier according to the first identifier, and then determines the identifier of the first terminal device as the second identifier according to the third identifier. Alternatively, the first core network device may also determine the second identifier directly according to the first identifier without determining the third identifier. It can be seen that, in the embodiment of the present application, the manner in which the first core network device allocates the second identifier to the first terminal device is flexible.
With reference to the second aspect or the first optional implementation manner of the second aspect or the second optional implementation manner of the second aspect, in a third optional implementation manner of the second aspect, the first identifier is SUCI, SUPI, IMSI, 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N) s) Wherein N represents the total number of paging frames included in one DRX period, and NsIndicating the total number of paging occasions a paging frame includes, UE _ ID is 5G-S-TMSI mod 1024, mod modulo.
With reference to the second aspect or any one of the first to third optional embodiments of the second aspect, in a fourth optional embodiment of the second aspect, the second identifier is 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N x N)s) Wherein N represents the total number of paging frames included in one DRX period, and NsIndicating the total number of paging occasions a paging frame includes, UE _ ID is 5G-S-TMSI mod 1024, mod modulo.
With reference to the second aspect or any one of the first optional embodiment to the fourth optional embodiment of the second aspect, in a fifth optional embodiment of the second aspect,
the second terminal device provides a relay service for the first terminal device, the first identifier is further used for indicating that the first terminal device requests to monitor a paging message through the second terminal device; or,
The method further comprises the following steps: the first core network device receives a first message from the first terminal device, where the first message is used to instruct the first terminal device to request to monitor a paging message through the second terminal device.
With reference to the fifth optional implementation manner of the second aspect, in a sixth optional implementation manner of the second aspect, the first message is a registration request message, or the first message is a message for requesting a service.
With reference to the second aspect or any one of the first optional implementation manner of the second aspect to the sixth optional implementation manner of the second aspect, in a seventh optional implementation manner of the second aspect, the method further comprises:
the first core network device establishes an association relationship between the first terminal device and the second terminal device, where the association relationship is used for enabling the identifier of the first terminal device and the identifier of the second terminal device to change synchronously, or the association relationship is used for enabling the identifier of the first terminal device and the identifier of the second terminal device to keep consistent.
The association relationship here may be used to enable the identifier of the first terminal device and the identifier of the second terminal device to be consistent, so that the identifier of the first terminal device and the identifier of the second terminal device can satisfy any one or more of the seven relationships between the identifiers described above, or may enable the PO of the first terminal device and the PO of the second terminal device to satisfy any one or more of the three relationships between the POs described above; alternatively, the association relationship here may be used to enable the PO of the first terminal device and the PO of the second terminal device to be consistent, so that the PO of the first terminal device and the PO of the second terminal device can satisfy any one or more of the three relationships between the POs described above, or so that the identity of the first terminal device and the identity of the second terminal device can satisfy any one or more of the seven relationships between the identities described above.
With reference to the second aspect or any optional implementation manner of the first optional implementation manner of the second aspect to the seventh optional implementation manner of the second aspect, in an eighth optional implementation manner of the second aspect, the first core network device and the second core network device are the same core network device, and the second core network device is a core network device that provides a service for the second terminal device, where the method further includes:
the first core network equipment determines that a new identifier needs to be allocated to the first terminal equipment;
the first core network device allocates a fourth identifier to the first terminal device, and the first core network device allocates a fifth identifier to the second terminal device, wherein a paging occasion determined according to the fourth identifier is the same as a paging occasion determined according to the fifth identifier, or a time domain distance between the paging occasion determined according to the fourth identifier and the paging occasion determined according to the fifth identifier is smaller than or equal to a first threshold, or the paging occasion determined according to the fourth identifier and the paging occasion determined according to the fifth identifier are partially or completely overlapped in a time domain.
For example, the first core network device and the second core network device are the same core network device, and if the first core network device determines that a new identifier needs to be allocated to the first terminal device, the first core network device may allocate a fourth identifier to the first terminal device, and in addition, the first core network device may allocate a fifth identifier to the second terminal device, for example, the first core network device may allocate the fifth identifier according to the fourth identifier. After assignment, the fourth identity and the fifth identity may be made to satisfy one or more of the seven relationships between identities introduced above, or the PO determined from the fourth identity and the PO determined from the fifth identity may be made to satisfy one or more of the three relationships between POs introduced above.
With reference to the second aspect or any one of the first to seventh alternative embodiments of the second aspect, in a ninth alternative embodiment of the second aspect,
the first core network device and the second core network device are different core network devices, and the second core network device is a core network device that provides a service for the second terminal device, the method further includes:
Sending a sixth message to the second core network device, where the sixth message is used to request the second core network device to establish an association relationship between the first terminal device and the second terminal device, and the association relationship is used for enabling the identifier of the first terminal device and the identifier of the second terminal device to change synchronously;
and receiving a seventh message from the second core network device, where the seventh message is used to indicate that the association relationship between the first terminal device and the second terminal device is accepted.
The first core network device may also request the second core network device to establish an association relationship between the first terminal device and the second terminal device, so that it can be ensured that the identifier of the first terminal device and the identifier of the second terminal device can be always consistent.
With reference to the second aspect or any one of the first optional implementation manner of the second aspect to the ninth optional implementation manner of the second aspect, in a tenth optional implementation manner of the second aspect, the method further comprises:
and sending the second identifier to the first terminal equipment.
The first core network device may send the second identifier assigned to the first terminal device, so that the first terminal device may use the second identifier.
With reference to the second aspect or any one of the first to the tenth alternative embodiments of the second aspect, in an eleventh alternative embodiment of the second aspect,
the second terminal device provides a relay service for the first terminal device, and the second identifier is further used for indicating to allow the first terminal device to monitor a paging message through the second terminal device; or,
the method further comprises the following steps: and the first core network equipment sends a second message to the first terminal equipment, wherein the second message is used for indicating that the first terminal equipment is allowed to monitor the paging message through the second terminal equipment.
With reference to the second aspect or any one of the first optional implementation manner of the second aspect to the eleventh optional implementation manner of the second aspect, in a twelfth optional implementation manner of the second aspect, the method further comprises:
the first core network device sends an eighth message to a second core network device, where the eighth message is used to indicate that a new identifier is allocated to the second terminal device, where the eighth message includes the second identifier or the identifier of the second terminal device, and the second core network device is a core network device that provides a service for the second terminal device;
The first core network device receives a fifth identifier from the second core network device, where the fifth identifier is a new identifier allocated to the second terminal device;
and the first core network equipment allocates a sixth identifier to the first terminal equipment according to the fifth identifier.
If the first core network device is to allocate a new identifier to the first terminal device, the first core network device may request the second core network device to allocate a new identifier to the second terminal device, so that the first core network device may allocate a new identifier to the first terminal device according to a fifth identifier allocated to the second terminal device by the second core network device, so that the identifier of the first terminal device and the identifier of the second terminal device can satisfy one or more of the seven relationships between the identifiers described above, or so that the PO determined according to the identifier of the first terminal device and the PO determined according to the identifier of the second terminal device can satisfy one or more of the three relationships between the POs described above.
With reference to the second aspect or any one of the first optional implementation manner of the second aspect to the eleventh optional implementation manner of the second aspect, in a thirteenth optional implementation manner of the second aspect, the method further comprises:
The first core network device sends an eighth message to a second core network device, where the eighth message is used to indicate that a new identifier is allocated to the second terminal device, where the eighth message includes the second identifier or the identifier of the second terminal device, and the second core network device is a core network device that provides a service for the second terminal device;
the first core network device receives a fifth identifier from the second core network device, where the fifth identifier is a new identifier allocated to the second terminal device;
the first core network device sends a ninth message to the second core network device, where the ninth message is used to indicate that a new identifier is allocated to the second terminal device, and the ninth message includes the second identifier or the identifier of the second terminal device;
the first core network device receives a seventh identifier from the second core network device, where the seventh identifier is a new identifier allocated to the second terminal device;
and the first core network equipment allocates an eighth identifier to the first terminal equipment according to the seventh identifier.
If the first core network device is to allocate a new identifier to the first terminal device, the first core network device may request the second core network device to allocate a new identifier to the second terminal device. However, after the second core network device allocates the fifth identifier to the second terminal device, the first core network device may not be able to allocate a new identifier to the first terminal device according to the fifth identifier. The first core network device may continue to request the second core network device to allocate a new identifier to the second terminal device, so that the first core network device may allocate the new identifier to the first terminal device according to the seventh identifier allocated to the second terminal device by the second core network device. That is, by means of such multiple negotiations, it is possible to enable the identity of the first terminal device and the identity of the second terminal device to satisfy one or more of the seven relationships between the identities introduced above, or to enable the PO determined from the identity of the first terminal device and the PO determined from the identity of the second terminal device to satisfy one or more of the three relationships between the POs introduced above.
With reference to the second aspect or any one of the first optional implementation manner of the second aspect to the eleventh optional implementation manner of the second aspect, in a fourteenth optional implementation manner of the second aspect, the method further comprises:
the first core network device sends an eighth message to a second core network device, where the eighth message is used to indicate that a new identifier is allocated to the second terminal device, where the eighth message includes the second identifier or an identifier of the second terminal device, and the eighth message further includes a first candidate identifier, where the first candidate identifier is an identifier to be allocated to the first terminal device, the first candidate identifier is used to determine the fifth identifier, and the second core network device is a core network device that provides a service for the second terminal device;
the first core network device receives a ninth message from the second core network device, where the ninth message is used to indicate that a new identifier cannot be allocated to the second terminal device;
and the first core network device allocates the eighth identifier to the first terminal device.
If the first core network device is to allocate a new identifier to the first terminal device, the first core network device may request the second core network device to allocate a new identifier to the second terminal device. In addition, the first core network device may also send the first candidate identifier to be allocated to the first terminal device to the second core network device, so that the second core network device may allocate a new identifier to the second terminal device according to the first candidate identifier. However, the second core network device may not allocate a new identifier to the second terminal device according to the first candidate identifier, and then the second core network device may notify the first core network device, and then the first core network device may allocate the eighth identifier to the first terminal device without allocating the first candidate identifier. For example, the subsequent first core network device may further send the eighth identifier to the second core network device, so that the second core network device allocates a new identifier to the second terminal device according to the eighth identifier. That is, by means of such multiple negotiations, it is possible to enable the identity of the first terminal device and the identity of the second terminal device to satisfy one or more of the seven relationships between the identities introduced above, or to enable the PO determined from the identity of the first terminal device and the PO determined from the identity of the second terminal device to satisfy one or more of the three relationships between the POs introduced above.
With reference to the fourteenth optional implementation manner of the second aspect, in a fifteenth optional implementation manner of the second aspect, the ninth message further includes a second candidate identifier, the second candidate identifier is an identifier to be allocated to the second terminal device, and the eighth identifier is determined according to the second candidate identifier.
The second core network device may notify the first core network device if the second core network device cannot allocate a new identifier to the second terminal device according to the first candidate identifier, and in addition, the second core network device may further determine an identifier to be allocated to the second terminal device, that is, a second candidate identifier, and send the second candidate identifier to the first core network device, so that the first core network device may allocate a new identifier to the first terminal device according to the second candidate identifier, for example, the eighth identifier is determined according to the second candidate identifier, so that the second core network device may allocate the second candidate identifier to the second terminal device, thereby reducing a probability that the second core network device cannot allocate an identifier to the second terminal device. That is, by means of such multiple negotiations, it is possible to enable the identity of the first terminal device and the identity of the second terminal device to satisfy one or more of the seven relationships between the identities introduced above, or to enable the PO determined from the identity of the first terminal device and the PO determined from the identity of the second terminal device to satisfy one or more of the three relationships between the POs introduced above.
With reference to the second aspect or any one of the first optional implementation manner of the second aspect to the fifteenth optional implementation manner of the second aspect, in a sixteenth optional implementation manner of the second aspect, the first terminal device provides a relay service for the second terminal device, and the method further includes:
and sending a fifth message to the first terminal device, wherein the fifth message is used for indicating the second terminal device to monitor the paging message through the first terminal device.
The first core network device may notify the first terminal device to monitor paging for the second terminal device, thereby obviating a need for the second terminal device to initiate a request to the first terminal device.
With reference to the sixteenth optional implementation manner of the second aspect, in a seventeenth optional implementation manner of the second aspect, the fifth message further includes an identifier of the second terminal device or a fourth identifier, where the fourth identifier is an identifier determined according to the identifier of the second terminal device, and/or includes a second DRX cycle, where the second DRX cycle is a DRX cycle of the second terminal device.
The fifth message may comprise an identity of the second terminal device or a fourth identity, so that the first terminal device is able to ascertain the identity of the second terminal device. The fifth message may also include the second DRX cycle so that the first terminal device may monitor paging for the second terminal device according to the first DRX cycle.
With reference to the second aspect or any one of the first optional embodiment to the seventeenth optional embodiment of the second aspect, in an eighteenth optional embodiment of the second aspect, the method further comprises:
the first core network device and a second core network device determine a first DRX period and a second DRX period through negotiation, wherein the first DRX period is the DRX period of the first terminal device, the second DRX period is the DRX period of the second terminal device, the first DRX period is greater than or equal to the second DRX period, and the second core network device is a core network device providing service for the second terminal device.
It is considered that if the DRX cycle of the first terminal device is smaller than the DRX cycle of the second terminal device, the third DRX cycle may be the DRX cycle of the first terminal device, that is, the second terminal device needs to monitor with a smaller DRX cycle than the DRX cycle of the second terminal device in order to monitor paging for the first terminal device, which may increase the power consumption of the second terminal device to some extent. Therefore, as an optional implementation manner, the first DRX cycle and the second DRX cycle may be determined through negotiation, and the second DRX cycle is made to be less than or equal to the first DRX cycle as much as possible, so that the second terminal device may monitor according to the DRX cycle of the second terminal device, and may monitor not only the paging of the first terminal device but also the paging of the second terminal device, without bringing extra power consumption to the second terminal device. The process of negotiating the DRX period can occur between the terminal equipment and the core network equipment, or can also occur between the core network equipment, so that the process is flexible.
With reference to the second aspect or any one of the first optional implementation manner of the second aspect to the eighteenth optional implementation manner of the second aspect, in a nineteenth optional implementation manner of the second aspect, the second terminal device provides a relay service for the first terminal device, and the method further includes:
and the first core network equipment determines that the first terminal equipment is not supported to monitor the paging message through the second terminal equipment any more.
The first core network device may determine whether to support the first terminal device to monitor paging through the second terminal device, and the determination method is not limited.
With reference to the nineteenth optional embodiment of the second aspect, in a twentieth optional embodiment of the second aspect, the method further comprises:
and the first core network equipment receives a first indication message from the first terminal equipment, wherein the first indication message is used for requesting no more monitoring of the paging message through the second terminal equipment.
The first core network device determines that the first terminal device is no longer supported to monitor paging through the second terminal device, and one determination method is that the first core network device receives a first indication message from the first terminal device, so that the first core network device can be determined that the first core network device is no longer supported to monitor paging through the second terminal device.
With reference to the second aspect or any one of the first optional implementation manner of the second aspect to the eighteenth optional implementation manner of the second aspect, in a twenty-first optional implementation manner of the second aspect, the second terminal device provides a relay service for the first terminal device, and the method further includes:
the first core network device determines that the first terminal device is no longer supported to monitor the paging message through the second terminal device;
the first core network device sends a second indication message to a second core network device, wherein the second indication message is used for indicating that the first terminal device and the second terminal device are not associated any more;
the first core network device receives a first acknowledgement message from the second core network device, the first acknowledgement message being used to confirm that the first terminal device and the second terminal device are no longer associated.
Since the second core network device may also establish the association relationship between the first terminal device and the second terminal device, the first core network device may notify the second core network device, so that the second core network device no longer associates the first terminal device with the second terminal device.
With reference to the twenty-second optional implementation manner of the second aspect or the twenty-first optional implementation manner of the second aspect, in a twenty-second optional implementation manner of the second aspect, the first indication message is a NAS message, or an N2 message.
With reference to any one of the nineteenth optional implementation manner of the second aspect to the twenty-second optional implementation manner of the second aspect, in a twenty-third optional implementation manner of the second aspect, the method further comprises:
and the first core network device sends a third indication message to the first terminal device, wherein the third indication message is used for indicating that the first terminal device does not monitor the paging message through the second terminal device any more.
With regard to the technical effects brought about by the second aspect or various alternative embodiments of the second aspect, reference may be made to the introduction to the technical effects of the first aspect or the respective embodiments.
In a third aspect, a third method of communication is provided, the method comprising: the method comprises the steps that a second core network device receives a sixth message from a first core network device, wherein the sixth message is used for requesting to establish an association relationship between a first terminal device and the second terminal device, the association relationship is used for enabling an identifier of the first terminal device and an identifier of the second terminal device to change synchronously, the first core network device and the second core network device are different core network devices, the first core network device is a core network device for providing service for the first terminal device, the second core network device is a core network device for providing service for the second terminal device, and the first terminal device provides relay service for the second terminal device, or the second terminal device provides relay service for the first terminal device; and the second core network equipment sends a seventh message to the first core network equipment, wherein the seventh message is used for indicating acceptance of establishment of an association relationship between the first terminal equipment and the second terminal equipment.
The method may be performed by a third communication device, which may be a communication apparatus or a communication device, such as a chip, capable of supporting a communication apparatus to implement the functions required by the method. Illustratively, the third communication device is a network device, or a chip provided in the network device for implementing the function of the network device, or other components for implementing the function of the network device. In the following description, the third communication device is, for example, a network device, such as a second core network device.
With reference to the third aspect, in a first optional implementation manner of the third aspect, the method further includes:
the second core network device receives an eighth message from the first core network device, where the eighth message is used to indicate that a new identifier is allocated to the second terminal device, where the eighth message includes a second identifier or an identifier of the second terminal device, and the second identifier is an identifier of the first terminal device;
and the second core network device sends a fifth identifier to the first core network device, wherein the fifth identifier is a new identifier allocated to the second terminal device.
With reference to the first optional implementation manner of the third aspect, in a second optional implementation manner of the third aspect, the method further includes:
the second core network device receives a ninth message from the first core network device, where the ninth message is used to indicate that a new identifier is allocated to the second terminal device, and the ninth message includes the second identifier or the identifier of the second terminal device;
and the second core network device sends a seventh identifier to the first core network device, wherein the seventh identifier is a new identifier allocated to the second terminal device.
With reference to the first optional implementation manner of the third aspect or the second optional implementation manner of the third aspect, in a third optional implementation manner of the third aspect, the fifth message further includes a first candidate identifier, where the first candidate identifier is an identifier to be allocated to the first terminal device, and the fifth identifier is determined according to the first candidate identifier.
With reference to the third aspect, in a fourth alternative embodiment of the third aspect, the method further includes:
the second core network device receives an eighth message from the first core network device, where the eighth message is used to indicate that a new identifier is allocated to the second terminal device, where the eighth message includes a second identifier or an identifier of the second terminal device, and the eighth message further includes a first candidate identifier, where the first candidate identifier is an identifier to be allocated to the first terminal device, the first candidate identifier is used to determine the fifth identifier, and the second identifier is an identifier of the first terminal device;
And the second core network device sends a ninth message to the first core network device, where the ninth message is used to indicate that a new identifier cannot be allocated to the second terminal device.
With reference to the fourth optional implementation manner of the third aspect, in a fifth optional implementation manner of the third aspect, the ninth message further includes a second candidate identifier, where the second candidate identifier is an identifier to be allocated to the second terminal device, and the second candidate identifier is used to determine a new identifier of the first terminal device.
With reference to the third aspect or any one of the first optional implementation manner to the fifth optional implementation manner of the third aspect, in a sixth optional implementation manner of the third aspect, the method further includes:
and the second core network equipment determines a first DRX period and a second DRX period through negotiation with the first core network equipment, wherein the first DRX period is the DRX period of the first terminal equipment, and the second DRX period is the DRX period of the second terminal equipment, and the first DRX period is greater than or equal to the second DRX period.
With reference to the third aspect or any one of the first optional implementation manner to the sixth optional implementation manner of the third aspect, in a seventh optional implementation manner of the third aspect, the method further includes:
The second core network device receives a second indication message from the first core network device, where the second indication message is used to indicate that the first terminal device and the second terminal device are no longer associated;
and the second core network device sends a first confirmation message to the first core network device, wherein the first confirmation message is used for confirming that the first terminal device and the second terminal device are not associated any more.
With reference to the seventh optional implementation manner of the third aspect, in an eighth optional implementation manner of the third aspect, the method further includes:
and the second core network device sends a fifth indication message to the second terminal device, where the fifth indication message is used to indicate that the first terminal device does not monitor the paging message through the second terminal device any more.
With regard to the technical effects brought about by the third aspect or the various alternative embodiments of the third aspect, reference may be made to the introduction of the technical effects of the first aspect or the corresponding embodiments, or reference may be made to the introduction of the technical effects of the second aspect or the corresponding embodiments.
In a fourth aspect, a communication device is provided, for example, the communication device is the first communication device as described above. The first communication device is configured to perform the method of the first aspect or any possible implementation. In particular, the first communication device may include means for performing the method of the first aspect or any possible implementation manner, for example, a processing means, and optionally, a transceiver means. For example, the transceiver module may include a transmitting module and a receiving module, and the transmitting module and the receiving module may be different functional modules, or may also be the same functional module, but can implement different functions. Illustratively, the first communication device is a communication device, or a chip or other component provided in the communication device. Illustratively, the communication device is a terminal device, such as a first terminal device. In the following, the first communication apparatus is taken as an example of the first terminal device. For example, the transceiver module may also be implemented by a transceiver, and the processing module may also be implemented by a processor (or a processing circuit). Alternatively, the sending module may be implemented by a sender, the receiving module may be implemented by a receiver, and the sender and the receiver may be different functional modules, or may also be the same functional module, but may implement different functions. If the first communication means is a communication device, the transceiver is implemented, for example, by an antenna, a feeder, a codec, etc. in the communication device. Alternatively, if the first communication device is a chip disposed in the communication apparatus, the transceiver (or the transmitter and the receiver) is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication apparatus to realize transceiving of information through the radio frequency transceiving component. In the introduction process of the fourth aspect, the description is continued by taking the first communication apparatus as a first terminal device, and taking the processing module, the sending module, and the receiving module as an example. Wherein,
The sending module is configured to send a first identifier to a first core network device, where the first identifier is an identifier of a second terminal device, or the first identifier is an identifier of the first terminal device, and the first terminal device provides a relay service for the second terminal device, or the second terminal device provides a relay service for the first terminal device;
the receiving module is configured to receive a second identifier from the first core network device, where the second identifier is a new identifier allocated to the first terminal device, where a paging occasion corresponding to the second identifier is the same as a paging occasion of the second terminal device, or a time domain distance between the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device is smaller than or equal to a first threshold, or the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device are partially overlapped or completely overlapped in a time domain.
In a first alternative embodiment of the fourth aspect, in combination with the fourth aspect,
the UE _ ID corresponding to the second identifier is the same as the UE _ ID corresponding to the identifier of the second terminal equipment; or,
The UE _ ID mod N corresponding to the second identifier is the same as the UE _ ID mod N corresponding to the identifier of the second terminal equipment; or,
UE _ ID mod (N) corresponding to the second identifiers) UE _ ID mod (N) corresponding to the identity of the second terminal devices) The same; or,
the difference value between the UE _ ID corresponding to the second identifier and the UE _ ID corresponding to the identifier of the second terminal equipment is smaller than or equal to a second threshold value; or,
the difference value between the UE _ ID mod N corresponding to the second identifier and the UE _ ID mod N corresponding to the identifier of the second terminal equipment is smaller than or equal to a third threshold value; or,
UE _ ID mod (N) corresponding to the second identifiers) UE _ ID mod (N) corresponding to the identity of the second terminal devices) The difference therebetween is less than or equal to a fourth threshold; or,
floor (UE _ ID/N) mod N corresponding to the second identifiersWith the label of the second terminal deviceIdentify the corresponding floor (UE _ ID/N) mod NsThe difference therebetween is less than or equal to a fifth threshold.
With reference to the fourth aspect or the first optional implementation manner of the fourth aspect, in a second optional implementation manner of the fourth aspect, the receiving module is further configured to receive, from the second terminal device, an identifier of the second terminal device.
With reference to the fourth aspect or the first optional implementation manner of the fourth aspect or the second optional implementation manner of the fourth aspect, in a third optional implementation manner of the fourth aspect, the first identifier is 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N × N)s) Wherein N represents the total number of paging frames included in one DRX period, and NsIndicating the total number of paging occasions a paging frame includes, UE _ ID is 5G-S-TMSI mod1024, mod modulo.
With reference to the fourth aspect or any one of the first optional implementation manner of the fourth aspect to the third optional implementation manner of the fourth aspect, in a fourth optional implementation manner of the fourth aspect,
the second terminal device provides a relay service for the first terminal device, the first identifier is further used for indicating that the first terminal device requests to monitor a paging message through the second terminal device; or,
the sending module is further configured to send a first message to the first core network device, where the first message is used to instruct the first terminal device to request to monitor a paging message through the second terminal device.
With reference to the fourth optional implementation manner of the fourth aspect, in a fifth optional implementation manner of the fourth aspect, the first message is a registration request message, or the first message is a message for requesting a service.
With reference to the fourth aspect or any one of the first optional implementation manner of the fourth aspect to the fifth optional implementation manner of the fourth aspect, in a sixth optional implementation manner of the fourth aspect,
the second terminal device provides a relay service for the first terminal device, and the second identifier is further used for indicating to allow the first terminal device to monitor a paging message through the second terminal device; or,
the receiving module is further configured to receive a second message from the first core network device, where the second message is used to indicate that the first terminal device is allowed to monitor a paging message through the second terminal device.
With reference to the fourth aspect or any one of the first to sixth alternative embodiments of the fourth aspect, in a seventh alternative embodiment of the fourth aspect,
the receiving module is further configured to receive a second DRX cycle from the second terminal device, where the second DRX cycle is a DRX cycle of the second terminal device;
The processing module is configured to determine a first DRX cycle through negotiation with the first core network device, where the first DRX cycle is a DRX cycle of the first terminal device, and the first DRX cycle is greater than or equal to the second DRX cycle.
With reference to the fourth aspect or any one of the first optional implementation manner of the fourth aspect to the seventh optional implementation manner of the fourth aspect, in an eighth optional implementation manner of the fourth aspect, the second terminal device provides a relay service for the first terminal device,
the sending module is further configured to send a third message to the second terminal device, where the third message is used to request monitoring of a paging message by the second terminal device;
the receiving module is further configured to receive a fourth message from the second terminal device, where the fourth message is used to indicate that the paging message is monitored for the first terminal device.
With reference to the fourth aspect or any one of the first optional implementation manner of the fourth aspect to the seventh optional implementation manner of the fourth aspect, in a ninth optional implementation manner of the fourth aspect, the first terminal device provides a relay service for the second terminal device,
The sending module is further configured to receive a third message from the second terminal device, where the third message is used to request the first terminal device to monitor a paging message;
the receiving module is further configured to send a fourth message to the second terminal device, where the fourth message is used to indicate that the paging message is monitored for the second terminal device.
With reference to the ninth optional implementation manner of the fourth aspect, in a tenth optional implementation manner of the fourth aspect, the receiving module is further configured to monitor a paging message for the second terminal device according to a third DRX cycle, where when the first DRX cycle is greater than or equal to the second DRX cycle, the third DRX cycle is the second DRX cycle, or when the first DRX cycle is smaller than the second DRX cycle, the third DRX cycle is the first DRX cycle, the first DRX cycle is the DRX cycle of the first terminal device, and the second DRX cycle is the DRX cycle of the second terminal device.
With reference to the fourth aspect or any optional implementation manner of the first optional implementation manner of the fourth aspect to the seventh optional implementation manner of the fourth aspect, in an eleventh optional implementation manner of the fourth aspect, the first terminal device provides a relay service for the second terminal device, and the receiving module is further configured to receive a fifth message from the first core network device, where the fifth message is used to instruct the second terminal device to listen to the paging message through the first terminal device.
With reference to the eleventh optional implementation manner of the fourth aspect, in a twelfth optional implementation manner of the fourth aspect, the fifth message further includes an identifier of the second terminal device or a third identifier, and/or includes a second DRX cycle, where the third identifier is an identifier determined according to the identifier of the second terminal device, and the second DRX cycle is a DRX cycle of the second terminal device.
With reference to the fourth aspect or any optional implementation manner of the first optional implementation manner of the fourth aspect to the twelfth optional implementation manner of the fourth aspect, in a thirteenth optional implementation manner of the fourth aspect, the second terminal device provides a relay service for the first terminal device, and the receiving module is further configured to receive a third indication message from the first core network device, where the third indication message is used to indicate that the first terminal device no longer listens to the paging message through the second terminal device.
With reference to the thirteenth optional implementation manner of the fourth aspect, in a fourteenth optional implementation manner of the fourth aspect, the sending module is further configured to send a first indication message to the first core network device, where the first indication message is used to request that the paging message is no longer monitored by the second terminal device.
With reference to the thirteenth optional implementation manner of the fourth aspect or the fourteenth optional implementation manner of the fourth aspect, in a fifteenth optional implementation manner of the fourth aspect, the sending module is further configured to send a fourth indication message to the second terminal device, where the fourth indication message is used to indicate that the paging message is no longer monitored by the second terminal device.
With regard to the technical effects brought about by the fourth aspect or the various alternative embodiments of the fourth aspect, reference may be made to the introduction to the technical effects of the first aspect or the respective embodiments.
In a fifth aspect, a communication device is provided, for example, the communication device is the second communication device as described above. The second communication device is configured to perform the method of the second aspect or any possible embodiment. In particular, the second communication device may comprise means for performing the method of the second aspect or any possible implementation, for example, a processing means, and optionally, a transceiver means. For example, the transceiver module may include a transmitting module and a receiving module, and the transmitting module and the receiving module may be different functional modules, or may also be the same functional module, but can implement different functions. Illustratively, the second communication device is a communication device, or a chip or other component provided in the communication device. Illustratively, the communication device is a network device. Illustratively, the network device is a core network device, such as a first core network device. In the following, the second communication device is the first core network device as an example. For example, the transceiver module may also be implemented by a transceiver, and the processing module may also be implemented by a processor (or a processing circuit). Alternatively, the sending module may be implemented by a sender, the receiving module may be implemented by a receiver, and the sender and the receiver may be different functional modules, or may also be the same functional module, but may implement different functions. If the second communication means is a communication device, the transceiver is implemented, for example, by an antenna, a feeder, a codec, etc. in the communication device. Alternatively, if the second communication device is a chip disposed in the communication apparatus, the transceiver (or the transmitter and the receiver) is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication apparatus to realize transceiving of information through the radio frequency transceiving component. In the introduction process of the fifth aspect, the second communication apparatus is a first core network device, and the processing module, the sending module, and the receiving module are taken as examples for introduction. Wherein,
The receiving module is configured to receive a first identifier from a first terminal device, where the first identifier is used to determine a new identifier for the first terminal device, and the first identifier is an identifier of a second terminal device or an identifier of the first terminal device, where the first terminal device provides a relay service for the second terminal device or the second terminal device provides a relay service for the first terminal device;
the processing module is configured to determine, according to the first identifier, that the identifier of the first terminal device is a second identifier, where a paging occasion corresponding to the second identifier is the same as a paging occasion of the second terminal device, or a time-domain distance between the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device is smaller than or equal to a first threshold, or the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device are partially overlapped or completely overlapped in a time domain.
With reference to the fifth aspect, in a first alternative embodiment of the fifth aspect,
the UE _ ID corresponding to the second identifier is the same as the UE _ ID corresponding to the identifier of the second terminal equipment; or,
The UE _ ID mod N corresponding to the second identifier is the same as the UE _ ID mod N corresponding to the identifier of the second terminal equipment; or,
UE _ ID mod (N) corresponding to the second identifiers) UE _ ID mod (N) corresponding to the identity of the second terminal devices) The same; or,
the difference value between the UE _ ID corresponding to the second identifier and the UE _ ID corresponding to the identifier of the second terminal equipment is smaller than or equal to a second threshold value; or,
the difference value between the UE _ ID mod N corresponding to the second identifier and the UE _ ID mod N corresponding to the identifier of the second terminal equipment is smaller than or equal to a third threshold value; or,
UE _ ID mod (N) corresponding to the second identifiers) UE _ ID mod (N) corresponding to the identity of the second terminal devices) The difference therebetween is less than or equal to a fourth threshold; or,
floor (UE _ ID/N) mod N corresponding to the second identifiersFloor (UE _ ID/N) mod N corresponding to the identity of the second terminal devicesThe difference therebetween is less than or equal to a fifth threshold.
With reference to the fifth aspect or the first optional implementation manner of the fifth aspect, in a second optional implementation manner of the fifth aspect, the processing module is configured to determine, according to the first identifier, that the identifier of the first terminal device is the second identifier by:
Determining a third identifier according to the first identifier, wherein the third identifier is an identifier of the second terminal device having a relay relationship with the first terminal device, or an identifier determined according to the identifier of the second terminal device;
and distributing the second identifier for the first terminal equipment according to the third identifier.
With reference to the fifth aspect or the first optional implementation manner of the fifth aspect or the second optional implementation manner of the fifth aspect, in a third optional implementation manner of the fifth aspect, the first identifier is SUCI, SUPI, IMSI, 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N)s) Wherein N represents the total number of paging frames included in one DRX period, and NsIndicating the total number of paging occasions a paging frame includes, UE _ ID is 5G-S-TMSI mod 1024, mod modulo.
With reference to the fifth aspect or any one of the first to third optional embodiments of the fifth aspect, in a third optional embodiment of the fifth aspect, the second identifier is 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N x N) s) Wherein N represents the total number of paging frames included in one DRX period, and NsIndicating the total number of paging occasions a paging frame includes, UE _ ID is 5G-S-TMSI mod 1024, mod modulo.
With reference to the fifth aspect or any one of the first alternative embodiment to the fourth alternative embodiment of the fifth aspect, in a fifth alternative embodiment of the fifth aspect,
the second terminal device provides a relay service for the first terminal device, the first identifier is further used for indicating that the first terminal device requests to monitor a paging message through the second terminal device; or,
the receiving module is further configured to receive a first message from the first terminal device, where the first message is used to instruct the first terminal device to request to monitor a paging message through the second terminal device.
With reference to the fifth optional implementation manner of the fifth aspect, in a sixth optional implementation manner of the fifth aspect, the first message is a registration request message, or the first message is a message for requesting a service.
With reference to the fifth aspect or any optional implementation manner of the first optional implementation manner of the fifth aspect to the sixth optional implementation manner of the fifth aspect, in a seventh optional implementation manner of the fifth aspect, the processing module is further configured to establish an association relationship between the first terminal device and the second terminal device, where the association relationship is used for enabling an identifier of the first terminal device and an identifier of the second terminal device to change synchronously.
With reference to the fifth aspect or any optional implementation manner of the first optional implementation manner of the fifth aspect to the seventh optional implementation manner of the fifth aspect, in an eighth optional implementation manner of the fifth aspect, the first core network device and the second core network device are the same core network device, the second core network device is a core network device that provides a service for the second terminal device,
the processing module is further configured to determine that a new identifier needs to be allocated to the first terminal device;
the processing module is further configured to allocate a fourth identifier to the first terminal device, and allocate a fifth identifier to the second terminal device, where a paging occasion determined according to the fourth identifier is the same as a paging occasion determined according to the fifth identifier, or a time domain distance between the paging occasion determined according to the fourth identifier and the paging occasion determined according to the fifth identifier is smaller than or equal to a first threshold, or the paging occasion determined according to the fourth identifier and the paging occasion determined according to the fifth identifier partially overlap or completely overlap in a time domain.
With reference to the fifth aspect or any optional implementation manner of the first optional implementation manner of the fifth aspect to the seventh optional implementation manner of the fifth aspect, in a ninth optional implementation manner of the fifth aspect, the first core network device and the second core network device are different core network devices, and the second core network device is a core network device that provides a service for the second terminal device,
The sending module is further configured to send a sixth message to the second core network device, where the sixth message is used to request the second core network device to establish an association relationship between the first terminal device and the second terminal device, and the association relationship is used for enabling an identifier of the first terminal device and an identifier of the second terminal device to change synchronously;
the receiving module is further configured to receive a seventh message from the second core network device, where the seventh message is used to indicate that the association relationship between the first terminal device and the second terminal device is accepted.
With reference to the fifth aspect or any optional implementation manner of the first optional implementation manner of the fifth aspect to the ninth optional implementation manner of the fifth aspect, in a tenth optional implementation manner of the fifth aspect, the sending module is further configured to send the second identifier to the first terminal device.
With reference to the tenth alternative embodiment of the fifth aspect, in an eleventh alternative embodiment of the fifth aspect,
the second terminal device provides a relay service for the first terminal device, and the second identifier is further used for indicating to allow the first terminal device to monitor a paging message through the second terminal device; or,
The sending module is further configured to send a second message to the first terminal device, where the second message is used to indicate that the first terminal device is allowed to monitor a paging message through the second terminal device.
With reference to the fifth aspect or any one of the first to eleventh alternative embodiments of the fifth aspect, in a twelfth alternative embodiment of the fifth aspect,
the sending module is further configured to send an eighth message to a second core network device, where the eighth message is used to indicate that a new identifier is allocated to the second terminal device, where the eighth message includes the second identifier or the identifier of the second terminal device, and the second core network device is a core network device that provides a service for the second terminal device;
the receiving module is further configured to receive a fifth identifier from the second core network device, where the fifth identifier is a new identifier allocated to the second terminal device;
the processing module is further configured to allocate a sixth identifier to the first terminal device according to the fifth identifier.
With reference to the fifth aspect or any one of the first to eleventh alternative embodiments of the fifth aspect, in a thirteenth alternative embodiment of the fifth aspect,
The sending module is further configured to send an eighth message to a second core network device, where the eighth message is used to indicate that a new identifier is allocated to the second terminal device, where the eighth message includes the second identifier or the identifier of the second terminal device, and the second core network device is a core network device that provides a service for the second terminal device;
the receiving module is further configured to receive a fifth identifier from the second core network device, where the fifth identifier is a new identifier allocated to the second terminal device;
the sending module is further configured to send a ninth message to the second core network device, where the ninth message is used to indicate that a new identifier is allocated to the second terminal device, and the ninth message includes the second identifier or the identifier of the second terminal device;
the receiving module is further configured to receive a seventh identifier from the second core network device, where the seventh identifier is a new identifier allocated to the second terminal device;
and the processing module is further configured to allocate an eighth identifier to the first terminal device according to the seventh identifier.
With reference to the fifth aspect or any one of the first to eleventh alternative embodiments of the fifth aspect, in a fourteenth alternative embodiment of the fifth aspect,
The sending module is further configured to send an eighth message to a second core network device, where the eighth message is used to indicate that a new identifier is allocated to the second terminal device, where the eighth message includes the second identifier or an identifier of the second terminal device, and the eighth message further includes a first candidate identifier, where the first candidate identifier is an identifier to be allocated to the first terminal device, the first candidate identifier is used to determine the new identifier of the second terminal device, and the second core network device is a core network device that provides a service for the second terminal device;
the receiving module is further configured to receive a ninth message from the second core network device, where the ninth message is used to indicate that a new identifier cannot be allocated to the second terminal device;
the processing module is further configured to allocate an eighth identifier to the first terminal device.
With reference to the fourteenth optional implementation manner of the fifth aspect, in a fifteenth optional implementation manner of the fifth aspect, the ninth message further includes a second candidate identifier, the second candidate identifier is an identifier to be allocated to the second terminal device, and the eighth identifier is determined according to the second candidate identifier.
With reference to the fifth aspect or any optional implementation manner of the first optional implementation manner of the fifth aspect to the fifteenth optional implementation manner of the fifth aspect, in a sixteenth optional implementation manner of the fifth aspect, the first terminal device provides a relay service for the second terminal device, and the sending module is further configured to send a fifth message to the first terminal device, where the fifth message is used to instruct the second terminal device to listen to a paging message through the first terminal device.
With reference to the sixteenth optional implementation manner of the fifth aspect, in a seventeenth optional implementation manner of the fifth aspect, the fifth message further includes an identifier of the second terminal device or a fourth identifier, where the fourth identifier is an identifier determined according to the identifier of the second terminal device, and/or includes a second DRX cycle, where the second DRX cycle is a DRX cycle of the second terminal device.
With reference to the fifth aspect or any one of the first to seventeenth optional embodiments of the fifth aspect, in an eighteenth optional embodiment of the fifth aspect,
The processing module is further configured to determine a first DRX cycle and a second DRX cycle through negotiation with a second core network device, where the first DRX cycle is a DRX cycle of the first terminal device, and the second DRX cycle is a DRX cycle of the second terminal device, where the first DRX cycle is greater than or equal to the second DRX cycle, and the second core network device is a core network device providing a service for the second terminal device.
With reference to the fifth aspect or any optional implementation manner of the first optional implementation manner of the fifth aspect to the eighteenth optional implementation manner of the fifth aspect, in a nineteenth optional implementation manner of the fifth aspect, the second terminal device provides a relay service for the first terminal device, and the processing module is further configured to determine that the first terminal device is no longer supported to listen to a paging message through the second terminal device.
With reference to the nineteenth optional implementation manner of the fifth aspect, in a twentieth optional implementation manner of the fifth aspect, the receiving module is further configured to receive a first indication message from the first terminal device, where the first indication message is used to request that the paging message is no longer monitored by the second terminal device.
With reference to the fifth aspect or any one of the first optional implementation manner to the eighteenth optional implementation manner of the fifth aspect, in a twenty-first optional implementation manner of the fifth aspect, the second terminal device provides a relay service for the first terminal device,
the processing module is further configured to determine that the first terminal device is no longer supported to monitor a paging message through the second terminal device;
the sending module is further configured to send a second indication message to a second core network device, where the second indication message is used to indicate that the first terminal device and the second terminal device are no longer associated with each other;
the receiving module is further configured to receive a first acknowledgement message from the second core network device, where the first acknowledgement message is used to confirm that the first terminal device and the second terminal device are no longer associated.
With reference to the twenty-second optional implementation manner of the fifth aspect or the twenty-first optional implementation manner of the fifth aspect, in a twenty-second optional implementation manner of the fifth aspect, the first indication message is a NAS message, or an N2 message.
With reference to any optional implementation manner of the nineteenth optional implementation manner of the fifth aspect to the twenty-second optional implementation manner of the fifth aspect, in a twenty-third optional implementation manner of the fifth aspect, the sending module is further configured to send a third indication message to the first terminal device, where the third indication message is used to indicate that the first terminal device no longer listens to a paging message through the second terminal device.
With regard to the technical effects brought about by the fifth aspect or the various alternative embodiments of the fifth aspect, reference may be made to the introduction to the technical effects of the second aspect or the respective embodiments.
In a sixth aspect, a communication device is provided, for example, the communication device is the third communication device as described above. The third communication device is configured to perform the method of the third aspect or any possible embodiment. In particular, the third communication device may include means for performing the method of the third aspect or any possible implementation manner, for example, a processing means, and optionally, a transceiver means. For example, the transceiver module may include a transmitting module and a receiving module, and the transmitting module and the receiving module may be different functional modules, or may also be the same functional module, but can implement different functions. Illustratively, the third communication device is a communication device, or a chip or other component provided in the communication device. Illustratively, the communication device is a network device. Illustratively, the network device is a core network device, for example, a second core network device. For example, the transceiver module may also be implemented by a transceiver, and the processing module may also be implemented by a processor (or a processing circuit). Alternatively, the sending module may be implemented by a sender, the receiving module may be implemented by a receiver, and the sender and the receiver may be different functional modules, or may also be the same functional module, but may implement different functions. If the third communication means is a communication device, the transceiver is implemented, for example, by an antenna, a feeder, a codec, etc. in the communication device. Alternatively, if the third communication device is a chip disposed in the communication apparatus, the transceiver (or the transmitter and the receiver) is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication apparatus to realize transceiving of information through the radio frequency transceiving component. In the introduction process of the sixth aspect, the processing module, the sending module, and the receiving module are taken as examples for introduction. Wherein,
The receiving module is configured to receive a sixth message from a first core network device, where the sixth message is used to request establishment of an association relationship between a first terminal device and a second terminal device, where the association relationship is used for enabling an identifier of the first terminal device and an identifier of the second terminal device to change synchronously, the first core network device and the second core network device are different core network devices, the first core network device is a core network device that provides a service for the first terminal device, the second core network device is a core network device that provides a service for the second terminal device, and the first terminal device provides a relay service for the second terminal device, or the second terminal device provides a relay service for the first terminal device;
the sending module is configured to send a seventh message to the first core network device, where the seventh message is used to indicate that the association relationship between the first terminal device and the second terminal device is accepted.
With reference to the sixth aspect, in a first alternative embodiment of the sixth aspect,
the receiving module is further configured to receive an eighth message from the first core network device, where the eighth message is used to indicate that a new identifier is allocated to the second terminal device, where the eighth message includes a second identifier or an identifier of the second terminal device, and the second identifier is an identifier of the first terminal device;
The sending module is further configured to send a fifth identifier to the first core network device, where the fifth identifier is a new identifier allocated to the second terminal device.
With reference to the first alternative embodiment of the sixth aspect, in a second alternative embodiment of the sixth aspect,
the receiving module is further configured to receive a ninth message from the first core network device, where the ninth message is used to instruct to allocate a new identifier to the second terminal device, and the ninth message includes the second identifier or the identifier of the second terminal device;
the receiving module is further configured to send a seventh identifier to the first core network device, where the seventh identifier is a new identifier allocated to the second terminal device.
With reference to the first optional implementation manner of the sixth aspect or the second optional implementation manner of the sixth aspect, in a third optional implementation manner of the sixth aspect, the fifth message further includes a first candidate identifier, where the first candidate identifier is an identifier to be allocated to the first terminal device, and the fifth identifier is determined according to the first candidate identifier.
With reference to the sixth aspect, in a fourth alternative embodiment of the sixth aspect,
The receiving module is further configured to receive an eighth message from the first core network device, where the eighth message is used to indicate that a new identifier is allocated to the second terminal device, where the eighth message includes a second identifier or an identifier of the second terminal device, and the eighth message further includes a first candidate identifier, where the first candidate identifier is an identifier to be allocated to the first terminal device, the first candidate identifier is used to determine the fifth identifier, and the second identifier is an identifier of the first terminal device;
the sending module is further configured to send a ninth message to the first core network device, where the ninth message is used to indicate that a new identifier cannot be allocated to the second terminal device.
With reference to the fourth optional implementation manner of the sixth aspect, in a fifth optional implementation manner of the sixth aspect, the ninth message further includes a second candidate identifier, where the second candidate identifier is an identifier to be allocated to the second terminal device, and the second candidate identifier is used to determine a new identifier of the first terminal device.
With reference to the sixth aspect or any one of the first alternative embodiment to the fifth alternative embodiment of the sixth aspect, in a sixth alternative embodiment of the sixth aspect,
The processing module is further configured to determine, through negotiation with the first core network device, a first DRX cycle and a second DRX cycle, where the first DRX cycle is a DRX cycle of the first terminal device, and the second DRX cycle is a DRX cycle of the second terminal device, where the first DRX cycle is greater than or equal to the second DRX cycle.
With reference to the sixth aspect or any one of the first alternative embodiments of the sixth aspect to the sixth alternative embodiments of the sixth aspect, in a seventh alternative embodiment of the sixth aspect,
the receiving module is further configured to receive a second indication message from the first core network device, where the second indication message is used to indicate that the first terminal device and the second terminal device are no longer associated;
the sending module is further configured to send a first acknowledgement message to the first core network device, where the first acknowledgement message is used to confirm that the first terminal device and the second terminal device are no longer associated with each other.
With reference to the seventh optional implementation manner of the sixth aspect, in an eighth optional implementation manner of the sixth aspect, the sending module is further configured to send a fifth indication message to the second terminal device, where the fifth indication message is used to indicate that the first terminal device does not monitor the paging message through the second terminal device any more.
With regard to the technical effects brought about by the sixth aspect or the various alternative embodiments of the sixth aspect, reference may be made to the introduction of the technical effects of the third aspect or the respective embodiments.
In a seventh aspect, a communication device is provided, for example, the first communication device as described above. The communication device includes a processor (or processing circuitry) and a communication interface (or interface circuitry) that may be used to communicate with other devices or apparatuses. Optionally, a memory may also be included for storing the computer instructions. The processor and the memory are coupled to each other for implementing the method as described in the first aspect or in the various possible embodiments of the first aspect. Alternatively, the first communication device may not include the memory, and the memory may be located outside the first communication device. The processor, the memory and the communication interface are coupled to each other for implementing the method as described in the first aspect or in various possible embodiments of the first aspect. The processor, for example, when executing the computer instructions stored by the memory, causes the first communication device to perform the method of the first aspect or any one of the possible implementations of the first aspect. Illustratively, the first communication device is a communication device, or a chip or other component provided in the communication device. Illustratively, the communication device is a terminal device, such as a first terminal device.
Wherein, if the first communication means is a communication device, the communication interface is implemented, for example, by a transceiver (or a transmitter and a receiver) in the communication device, for example, the transceiver is implemented by an antenna, a feeder, a codec, and the like in the communication device. Or, if the first communication device is a chip disposed in the communication apparatus, the communication interface is, for example, an input/output interface, such as an input/output pin, of the chip, and the communication interface is connected to a radio frequency transceiving component in the communication apparatus to implement transceiving of information through the radio frequency transceiving component.
In an eighth aspect, a communication device is provided, for example, the second communication device as described above. The communication device includes a processor (or processing circuitry) and a communication interface (or interface circuitry) that may be used to communicate with other devices or apparatuses. Optionally, a memory may also be included for storing the computer instructions. The processor and the memory are coupled to each other for implementing the method as described in the second aspect or in various possible embodiments of the second aspect. Alternatively, the second communication device may not include a memory, and the memory may be located outside the second communication device. The processor, the memory and the communication interface are coupled to each other for implementing the method as described in the second aspect or in various possible embodiments of the second aspect. The processor, for example, when executing the computer instructions stored by the memory, causes the second communication device to perform the method of the second aspect or any one of the possible embodiments of the second aspect. Illustratively, the second communication device is a communication device, or a chip or other component provided in the communication device. Illustratively, the communication device is a network device. Illustratively, the network device is a core network device, such as a first core network device.
Wherein, if the second communication means is a communication device, the communication interface is implemented, for example, by a transceiver (or a transmitter and a receiver) in the communication device, for example, by an antenna, a feeder, a codec, etc. in the communication device. Or, if the second communication device is a chip disposed in the communication apparatus, the communication interface is, for example, an input/output interface, such as an input/output pin, of the chip, and the communication interface is connected to a radio frequency transceiving component in the communication apparatus to realize transceiving of information through the radio frequency transceiving component.
A ninth aspect provides a communication device, for example a third communication device as described above. The communication device includes a processor (or processing circuitry) and a communication interface (or interface circuitry) that may be used to communicate with other devices or apparatuses. Optionally, a memory may also be included for storing the computer instructions. The processor and the memory are coupled to each other for implementing the methods described in the third aspect or the various possible embodiments of the third aspect. Alternatively, the first communication device may not include a memory, and the memory may be located outside the third communication device. The processor, the memory and the communication interface are coupled to each other for implementing the methods described in the third aspect or the various possible embodiments of the third aspect. The processor, for example, when executing the computer instructions stored by the memory, causes the first communication device to perform the method of the third aspect or any one of the possible embodiments of the third aspect. Illustratively, the third communication device is a communication device, or a chip or other component provided in the communication device. Illustratively, the communication device is a network device. Illustratively, the network device is a core network device, such as a second core network device.
Wherein, if the third communication device is a communication device, the communication interface is implemented by, for example, a transceiver (or a transmitter and a receiver) in the communication device, for example, the transceiver is implemented by an antenna, a feeder, a codec, and the like in the communication device. Or, if the third communication device is a chip disposed in the communication apparatus, the communication interface is, for example, an input/output interface, such as an input/output pin, of the chip, and the communication interface is connected to a radio frequency transceiving component in the communication apparatus to implement transceiving of information through the radio frequency transceiving component.
A tenth aspect provides a first communication system comprising the communication apparatus of the fourth aspect or the communication apparatus of the seventh aspect and comprising the communication apparatus of the fifth aspect or the communication apparatus of the eighth aspect.
With reference to the tenth aspect, in a first optional implementation manner of the tenth aspect, the second communication system further includes the communication apparatus of the sixth aspect or the communication apparatus of the ninth aspect.
In an eleventh aspect, a computer-readable storage medium is provided, which is used to store a computer program, which, when run on a computer, causes the computer to perform the method of the first aspect or any one of the possible implementations of the first aspect.
In a twelfth aspect, a computer-readable storage medium is provided, which is used to store a computer program, which, when run on a computer, causes the computer to perform the method of the second aspect or any one of the possible implementations of the second aspect.
In a thirteenth aspect, a computer-readable storage medium is provided, which is used to store a computer program, which, when run on a computer, causes the computer to perform the method of the third aspect or any one of the possible embodiments of the third aspect.
In a fourteenth aspect, a computer program product is provided, comprising instructions for storing a computer program which, when run on a computer, causes the computer to perform the method of the first aspect or any one of the possible implementations of the first aspect.
In a fifteenth aspect, a computer program product is provided comprising instructions for storing a computer program which, when run on a computer, causes the computer to perform the method of the second aspect or any one of the possible embodiments of the second aspect.
In a sixteenth aspect, there is provided a computer program product comprising instructions for storing a computer program which, when run on a computer, causes the computer to perform the method of the third aspect or any one of the possible embodiments of the third aspect.
In the embodiment of the application, the PO determined according to the identifiers of the two terminal devices can be the same or similar by setting the identifiers of the two terminal devices, so that the power consumption of the relay terminal device for monitoring paging is reduced.
Drawings
Fig. 1A to 1D are schematic diagrams of four application scenarios according to an embodiment of the present application;
fig. 2 is a flowchart of a first communication method according to an embodiment of the present application;
fig. 3 is a flowchart of a second communication method provided in the embodiment of the present application;
fig. 4 is a flowchart of a third communication method provided in the embodiment of the present application;
fig. 5 is a flowchart of a fourth communication method provided in the embodiment of the present application;
fig. 6 is a flowchart of a fifth communication method according to an embodiment of the present application;
fig. 7 is a schematic block diagram of a first terminal device according to an embodiment of the present application;
fig. 8 is a schematic block diagram of a first core network device according to an embodiment of the present application;
Fig. 9 is a schematic block diagram of a second core network device according to an embodiment of the present application;
fig. 10 is a schematic block diagram of a communication device according to an embodiment of the present application;
fig. 11 is another schematic block diagram of a communication device according to an embodiment of the present application;
fig. 12 is a further schematic block diagram of a communication device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.
1) Terminal equipment, including equipment providing voice and/or data connectivity to a user, in particular, including equipment providing voice to a user, or including equipment providing data connectivity to a user, or including equipment providing voice and data connectivity to a user. For example, may include a handheld device having wireless connection capability, or a processing device connected to a wireless modem. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchange voice or data with the RAN, or interact with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a vehicle-to-all (V2X) terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (IoT) terminal device, a subscription unit (subscriber unit), a subscription station (IoT), a mobile station (mobile station), a remote station (remote station), an access point (access point, AP), a remote terminal (remote), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), or user equipment (user), etc. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.
By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable smart device or intelligent wearable equipment etc. is the general term of using wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets, smart helmets, smart jewelry and the like for monitoring physical signs.
The various terminal devices described above, if located on a vehicle (e.g., placed in or installed in the vehicle), may be considered to be vehicle-mounted terminal devices, which are also referred to as on-board units (OBUs), for example.
In this embodiment, the terminal device may further include a relay (relay). Or, it is understood that any device capable of data communication with a base station may be considered a terminal device.
In the embodiment of the present application, the apparatus for implementing the function of the terminal device may be the terminal device, or may be an apparatus capable of supporting the terminal device to implement the function, for example, a chip system, and the apparatus may be installed in the terminal device. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices. In the technical solution provided in the embodiment of the present application, a device for implementing a function of a terminal is taken as an example of a terminal device, and the technical solution provided in the embodiment of the present application is described.
2) Network devices, including, for example, Access Network (AN) devices, such as base stations (e.g., access points), may refer to devices in AN access network that communicate with wireless terminal devices over one or more cells over the air, or, for example, a network device in vehicle-to-all (V2X) technology is a Road Side Unit (RSU). The base station may be configured to interconvert received air frames and IP packets as a router between the terminal device and the rest of the access network, which may include an IP network. The RSU may be a fixed infrastructure entity supporting the V2X application and may exchange messages with other entities supporting the V2X application. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved Node B (NodeB) or eNB or e-NodeB in an LTE system or an LTE-a (long term evolution-advanced), or may also include a next generation Node B (gNB) in a 5th generation (5G) new radio, NR (NR) system (also referred to as an NR system) or may also include a Centralized Unit (CU) and a distributed unit (distributed unit, DU) in a Cloud radio access network (Cloud RAN) system, which is not limited in the embodiments of the present application.
The network device may further include a core network device, for example, including an access and mobility management function (AMF), a Session Management Function (SMF), a User Plane Function (UPF), or the like in a 5G system, or including a Mobility Management Entity (MME) in a 4G system, or the like.
In the embodiment of the present application, the apparatus for implementing the function of the network device may be a network device, or may be an apparatus capable of supporting the network device to implement the function, for example, a system on chip, and the apparatus may be installed in the network device. In the technical solution provided in the embodiment of the present application, a device for implementing a function of a network device is taken as an example of a network device, and the technical solution provided in the embodiment of the present application is described.
3) Discontinuous Reception (DRX) mechanism. The DRX mechanism includes a DRX cycle (cycle) during which the terminal device periodically "wakes up" for a period of time, and may remain in a "sleep" state at other times in the DRX cycle to reduce power consumption. In short, under the DRX mechanism, the terminal device may periodically enter a sleep state without monitoring a Physical Downlink Control Channel (PDCCH).
4) Radio Resource Control (RRC) states, a terminal device has 3 RRC states: RRC connected (connected) state, RRC idle (idle) state, and RRC inactive (inactive) state.
Herein, "connected state" and "RRC connected state" are the same concept, and the two designations may be interchanged): the terminal device establishes RRC connection with the network and can perform data transmission.
Herein, "idle state" and "RRC idle state" are the same concept, and the two designations may be interchanged): the terminal device does not establish an RRC connection with the network and the base station does not store the context of the terminal device. If the terminal device needs to enter the RRC connected state from the RRC idle state, an RRC connection establishment procedure needs to be initiated.
Herein, "deactivated dynamic," "inactive state," "deactivated state," "inactive state," "RRC inactive state," or "RRC deactivated state," etc. are the same concept, and these designations may be interchanged): the terminal device has previously entered the RRC connected state at the anchor base station, which then releases the RRC connection, but the anchor base station maintains the context of the terminal device. If the terminal device needs to enter the RRC connected state again from the RRC inactive state, an RRC connection recovery procedure (alternatively referred to as an RRC connection re-establishment procedure) needs to be initiated at the currently camped base station. Because the terminal device may be in a mobile state, the base station where the terminal device currently resides and the anchor base station of the terminal device may be the same base station or different base stations. Compared with the RRC establishment process, the RRC recovery process has shorter time delay and smaller signaling overhead. However, the base station needs to store the context of the terminal device, which occupies the storage overhead of the base station.
5) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. For example, A/B, represents: a or B. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.
And, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing a plurality of objects, and do not limit the size, content, sequence, timing, priority, degree of importance, etc., of the plurality of objects. For example, the first identifier and the second identifier are used only for distinguishing different identifiers, and do not indicate a difference in the amount of information, content, priority, or importance of the two identifiers.
The foregoing has described some of the noun concepts to which embodiments of the present application relate, and the following has described some features of the embodiments of the present application.
When the terminal device is in the RRC idle state or the RRC inactive state, the terminal device needs to monitor paging because the network may page the terminal device. The terminal device may wake up on the PO of the terminal device to monitor a paging Downlink Control Information (DCI), or monitor the PDCCH, and may sleep at other times except for the PO, thereby reducing power consumption of the terminal device. Currently, a 2-bit field is included in the paging DCI, which may indicate that the paging DCI includes scheduling information, or includes a short message (short message), or includes both scheduling information and a short message. The scheduling information is used for scheduling the paging message, for example, the scheduling information includes time-frequency resource information or modulation coding information of the paging message. The short message may indicate whether system information is changed, an Earthquake and Tsunami Warning System (ETWS) notification, or a Commercial Mobile Alert Service (CMAS) notification, etc. For example, refer to table 1, which is an indication manner of the 2-bit field included in the paging DCI.
TABLE 1
Figure BDA0002604496940000271
Figure BDA0002604496940000281
After the terminal device detects the paging DCI, the paging DCI may be decoded. If the paging DCI includes scheduling information of the paging message, the terminal device continues to receive the paging message, if the paging message includes an identification of the terminal device, the terminal device is paged, and if the paging message does not include the identification of the terminal device, the terminal device is not paged. If the paging DCI does not include scheduling information, and only includes a short message, the terminal device does not need to receive a paging message.
The terminal device monitors one PO per DRX cycle. One PO is a set of PDCCH monitoring occasions, which may include multiple subframes or multiple Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the PDCCH monitoring occasions of one PO may span multiple radio frames. A Paging Frame (PF) is a radio frame, and a PF may contain one or more POs or a time domain starting point including one or more POs. A PO may start on the PF associated with the PO or may start after the PF associated with the PO ends. For example, PO1 starts at PF 1 associated with PO1, and PO1 may end at PF 1, or PO1 may span multiple radio frames, and PO1 does not end at PF 1, but ends at a radio frame after PF 1.
The PO may be determined according to the parameters broadcasted by the cell, the DRX cycle of the terminal device and the identity of the terminal device. For example, the parameters of the cell broadcast include one or more of: DRX cycle/paging cyclePeriod (paging cycle)/default paging cycle (default paging cycle), NsOr, PF _ offset. Wherein N represents the total number of PFs in DRX period, NsRepresents the number of POs included in one PF, and PF _ offset is used to determine an offset value of the PF. The identifier of the terminal device may be an International Mobile Subscriber Identity (IMSI) or a 5G-service (S) -temporary mobile subscriber identity (5G S-temporary mobile subscriber identity, 5G-S-TMSI) of the terminal device.
The calculation formula of the PF of the terminal device defined in the current standard protocol is as follows:
(SFN + PF _ offset) mod T ═ T div N (UE _ ID mod N) formula 1
The frame with the frame number being the System Frame Number (SFN) determined according to equation 1 is the PF.
The calculation formula of the PO of the terminal device defined in the current standard protocol is as follows:
i _ s ═ floor (UE _ ID/N) mod Ns equation 2
I _ s determined according to equation 2 represents the index of PO.
The UE may determine the PO from the SFN and i _ s.
In the above two formulas, T represents the DRX cycle of the terminal device. Specifically, T is the minimum value of both the specific DRX cycle of the terminal device and the default DRX cycle of the system information broadcast. N denotes the total number of PFs in the DRX cycle. N is a radical ofsIndicates the number of POs included in one PF. PF _ offset is used to determine the offset value of the PF. The UE _ ID is (5G-S-TMSI mod 1024), mod denotes the modulo operation.
At present, a terminal device may communicate with a base station through other terminal devices in addition to directly communicating with the base station. For example, in the public safety scenario, the relay terminal device may act as a relay for the remote terminal device, so that the remote terminal device can communicate with the base station through the relay terminal device, which is referred to as UE2NW relay technology.
Under this technique, the remote terminal device can receive a page from the network through the relay terminal device. Specifically, the relay terminal device monitors paging for the remote terminal device in addition to monitoring paging of the relay terminal device, and sends the paging of the remote terminal device to the remote terminal device.
The relay terminal device needs to monitor the PO of the remote terminal device in order to monitor the paging of the remote terminal device, and the POs of the relay terminal device and the remote terminal device may be different. For example, when the values of (5G-S-TMSI mod 1024) of the relay terminal device and the remote terminal device are different, the PO of the relay terminal device and the PO of the remote terminal device are different. Then, the relay terminal device needs to wake up to listen to the paging of the remote terminal device in an additional time except for the PO of the relay terminal device, which increases the power consumption of the relay terminal device.
In the LTE system, the UE _ ID of a terminal device is (IMSI mod 1024) of the terminal device, the IMSI is an international mobile subscriber identity (international mobile subscriber identity), and each mobile subscriber has a unique IMSI. The IMSI of the mobile subscriber is fixed.
To support protection of user privacy, the 5G system supports allocation of a 5G-globally unique temporary UE identity (GUTI) to the terminal device. The situation that the network needs to allocate a new 5G-GUTI to the terminal device includes: when receiving a registration request message of initial registration or mobile registration update or periodic registration update from the terminal device, the AMF includes the new 5G-GUTI allocated to the terminal device in a registration completion message sent to the terminal device, or the AMF may also include the new 5G-GUTI in a configuration update message sent to the terminal device. For example, after receiving the service request message from the terminal device, the AMF includes a new 5G-GUTI in the configuration update message sent to the terminal device.
The 5G-GUTI is composed of a globally unique AMF identifier (GUAMI) and a 5G-TMSI. GUAMI is used to identify the AMF that allocates the 5G-GUTI. GUAMI includes AMF set ID (AMF set ID) and AMF pointer (AMF pointer). In the AMF that allocates the 5G-GUTI, the 5G-TMSI is used to uniquely identify the terminal device. The 5G-S-TMSI is a shortened form of the 5G-GUTI, and the 5G-S-TMSI can improve the efficiency of air interface signaling procedures (such as paging or service requests). The 5G-S-TMSI is composed of an AMF set ID, an AMF pointer, and a 5G-TMSI. Since the 5G-S-TMSI is variable, the PO of the terminal device can be changed by changing the 5G-S-TMSI of the terminal device.
In view of this, the technical solutions of the embodiments of the present application are provided. As can be seen from the above description, the PO of one terminal device is related to the identifier of the terminal device, and if the identifiers of two terminal devices are different, the POs of the two terminal devices are different. Therefore, in the embodiment of the present application, by setting the identifiers of the two terminal devices, the POs determined according to the identifiers of the two terminal devices are the same, and the first terminal device can monitor the paging of the first terminal device and the paging of the second terminal device on the same PO, and does not need to wake up in more time to monitor the paging, which is beneficial to reducing the power consumption of the first terminal device; or, the POs determined according to the identifiers of the two terminal devices may be close in the time domain, and the first terminal device may monitor the paging of the first terminal device and the paging of the second terminal device in a close time, for example, after monitoring the paging of one terminal device, the first terminal device may not enter the sleep state, but enter the sleep state after the paging of the other terminal device is monitored, and since the POs of the two terminal devices are close in the time domain, the power consumption caused by the waiting of the first terminal device may be smaller than the power consumption caused by waking up after the sleep; or, the POs determined according to the identifiers of the two terminal devices may partially overlap or completely overlap in the time domain, and in the time domain range where the POs overlaps, the first terminal device may monitor the paging of the first terminal device and also the paging of the second terminal device.
Or, if one terminal device is a 4G terminal device and the other terminal device is a 5G terminal device, the UE _ ID of the PO for determining the 4G terminal device is (IMSI mod 1024) of the terminal device, and the IMSI is not variable, the UE _ ID of the terminal device is not variable, and the PO is not variable. However, the UE _ ID of the 5G terminal device is variable, so that the PO of the two terminal devices also satisfies the conditions as described above by assigning a new identity to the 5G terminal device.
For example, a user can now have a variety of terminal devices, such as a mobile phone, a smart watch, a smart bracelet, or smart glasses, and at present, in addition to the mobile phone, the devices such as the smart watch are also provided with functions such as dialing a call, which is more convenient for the user to use. For example, referring to fig. 1A, a smart watch can establish a connection with a cell phone, so as to access a network through the cell phone, and this scenario may be considered that the cell phone provides a relay service for the smart watch. In this scenario, the smart watch may make and receive calls through the mobile phone, for example, there is an incoming call calling the smart watch, or when the user makes a call through the smart watch, the smart watch does not directly communicate with the network, but communicates with the network through the mobile phone, so that power consumption of the smart watch may be saved. However, generally, each terminal device needs to listen for pages. Therefore, even if the call receiving and making functions of the smart watch are all executed by the mobile phone, the smart watch still reduces the power after a period of time, and even if the smart watch is in an RRC idle state or an RRC inactive state and has no data transmission, the smart watch needs to wake up to monitor PO and many monitors are idle, which may cause the smart watch to consume redundant power, reduce the power more quickly, and deteriorate cruising ability. If the technical scheme of the embodiment of the application is adopted, the smart watch can monitor paging through the mobile phone, or the mobile phone can monitor paging for the smart watch, so that the smart watch does not need to wake up in PO (Po) to directly monitor paging from a network, and the power consumption of the smart watch can be effectively saved.
For another example, the battery capacity of the mobile phone is also small, and the mobile phone cannot be used for a long time, and especially, the current smart phone may need to be charged once or twice a day, which is also troublesome. However, the electric quantity of the vehicle is generally sufficient, and therefore, the mobile phone can also establish a connection with the vehicle (for example, establish a connection with an On Board Unit (OBU) in the vehicle, or establish a connection with the vehicle itself, etc.), so that the vehicle can be considered to provide a relay service for the mobile phone through the vehicle access network, and for this, reference may be made to fig. 1B. In this scenario, the mobile phone may make and receive calls through the vehicle, for example, there is an incoming call calling the mobile phone, or when the user makes a call through the mobile phone, the mobile phone does not directly communicate with the network, but communicates with the network through the vehicle, so that power consumption of the vehicle may be saved. Generally, each terminal device needs to listen for pages. Therefore, even if the functions of making and receiving calls of the mobile phone are all executed by the vehicle, the mobile phone still reduces the power after a period of time, and even if the mobile phone is in an RRC idle state or an RRC inactive state and has no data transmission, the mobile phone needs to wake up to monitor PO and a lot of monitoring is idle, which causes the mobile phone to consume redundant power consumption, the power is reduced more quickly, and the cruising ability is poor. If the technical scheme of the embodiment of the application is adopted, the mobile phone can monitor paging through the vehicle, or the vehicle can monitor paging for the mobile phone, so that the mobile phone does not need to wake up in PO (Po) to directly monitor paging from a network, and the power consumption of the mobile phone can be effectively saved.
In various embodiments of the present application, monitoring paging for another terminal device by one terminal device includes, for example, monitoring paging DCI for the terminal device, or monitoring paging DCI and paging message for the terminal device. For example, the monitoring, by the first terminal device, for the paging by the second terminal device may include monitoring, by the first terminal device, the paging DCI for the paging by the second terminal device, or may include monitoring, by the first terminal device, the paging DCI and the paging message for the paging by the second terminal device. In addition, in various embodiments of the present application, "the first terminal device listens for a page for the second terminal device," and this description is equivalent to "the second terminal device listens for a page through the first terminal device. Similarly, the description "the second terminal device listens for paging for the first terminal device" is equivalent to "the first terminal device listens for paging through the second terminal device".
The technical solution provided in the embodiment of the present application may be applied to a fourth generation mobile communication technology (4G) system, such as an LTE system, or may be applied to a 5G system, such as an NR system, or may also be applied to a next generation mobile communication system or other similar communication systems, which is not limited specifically. In addition, the technical solution provided by the embodiment of the present application may be applied to a device-to-device (D2D) scenario, for example, an NR-D2D scenario or a sidelink communication scenario, or may be applied to a non-direct communication scenario, for example, a UE2NW Relay scenario, a UE2UE Relay scenario, or may be applied to a vehicle-to-all (V2X) scenario, for example, an NR-V2X scenario, which may be applied to a vehicle networking, for example, V2X, a vehicle-to-vehicle (V2V), a vehicle-to-person (V2P), a pedestrian-to-all (P2X), or may be applied to the fields of intelligent driving, assisted driving, or intelligent networking.
Fig. 1C is a schematic view of an application scenario according to an embodiment of the present application. Fig. 1C includes a terminal device 1, a terminal device 2, an access network device, and a core network device. The access network device is an access network device to which the terminal device 1 is accessed, the core network device is a core network device serving the terminal device 1 and the terminal device 2, the terminal device 1 is a relay terminal device, and the terminal device 2 is a far-end terminal device, or the terminal device 1 provides a relay service for the terminal device 2. As for the terminal device 1 providing the relay service for the terminal device 2, it can be understood that the information sent by the terminal device 2 to the access network device is forwarded to the access network device through the terminal device 1, and the information sent by the access network device to the terminal device 2 is also forwarded to the terminal device 2 through the terminal device 1. For example, the terminal device 2 is not in the coverage of the access network device, or the terminal device 2 is at the coverage edge of the access network device, or the terminal device 2 is in poor signal quality of the access network, or the terminal device 2 cannot be directly served by the access network device, or the terminal device 2 is not provided with the Uu port, or the terminal device 2 is in an energy saving mode, or the terminal device 2 has low power, and so on.
Fig. 1D is a schematic view of another application scenario according to an embodiment of the present application. Fig. 1D includes a terminal device 1, a terminal device 2, an access network device, a core network device 1, and a core network device 2. The access network device is an access network device to which the terminal device 1 is accessed, the core network device 1 is a core network device serving the terminal device 1, the core network device 2 is a core network device serving the terminal device 2, the terminal device 1 is a relay terminal device, and the terminal device 2 is a far-end terminal device, or the terminal device 1 provides a relay service for the terminal device 2. As for the terminal device 1 providing the relay service for the terminal device 2, it can be understood that the information sent by the terminal device 2 to the access network device is forwarded to the access network device through the terminal device 1, and the information sent by the access network device to the terminal device 2 is also forwarded to the terminal device 2 through the terminal device 1. For example, the terminal device 2 is not in the coverage of the access network device, or the terminal device 2 is at the coverage edge of the access network device, or the terminal device 2 is in poor signal quality of the access network, or the terminal device 2 cannot be directly served by the access network device, or the terminal device 2 is not provided with the Uu port, or the terminal device 2 is in an energy saving mode, or the terminal device 2 has low power, and so on.
The access network device in fig. 1C or fig. 1D is, for example, a base station. The access network device corresponds to different devices in different systems, for example, in a 4G system, the access network device may correspond to an eNB, and in a 5G system, the access network device in a 5G system, for example, a gNB. Of course, the technical solution provided in the embodiment of the present application may also be applied to a future mobile communication system, and therefore, the access network device in fig. 1C or fig. 1D may also correspond to a network device in the future mobile communication system. In fig. 1C or fig. 1D, the access network device is taken as an example of a base station, and actually, referring to the foregoing description, the access network device may also be a RSU or the like. The core network in fig. 1C or 1D is, for example, AMF, or may be another core network device.
The method provided by the embodiment of the application is described below with reference to the accompanying drawings. It should be noted that, in the embodiments of the present application, all information interaction related to between the terminal device and the core network device may be forwarded from the core network device through the access network device, which is not mentioned below only because the solution of the embodiments of the present application does not relate to the access network device.
The embodiment of the present application provides a first communication method, please refer to fig. 2, which is a flowchart of the method. In the following description, the method is applied to the network architecture shown in fig. 1C or fig. 1D as an example.
For ease of description, in the following, the method is performed by a network device and a terminal device as an example. The first core network device described below is a core network device serving a first terminal device, and the second core network device is a core network device serving a second terminal device. The first core network device and the second core network device may be the same core network device, or may be different core network devices.
If the embodiment of the present application is applied to the network architecture shown in fig. 1C, the first terminal device described below may be a terminal device 1 (i.e., a relay terminal device) in the network architecture shown in fig. 1C, the second terminal device described below may be a terminal device 2 (i.e., a remote terminal device) in the network architecture shown in fig. 1C, the first core network device described below may be a core network device in the network architecture shown in fig. 1C, and the second core network device described below may also be a core network device in the network architecture shown in fig. 1C; alternatively, the first terminal device described below may be the terminal device 2 in the network architecture shown in fig. 1C, the second terminal device described below may be the terminal device 1 in the network architecture shown in fig. 1C, the first core network device described below may be the core network device in the network architecture shown in fig. 1C, and the second core network device described below may also be the core network device in the network architecture shown in fig. 1C. It can be seen that, in this scenario, the first core network device and the second core network device are the same core network device. If the embodiment of the present application is applied to such a scenario, the information interaction procedure between two core network devices described below need not be performed.
Alternatively, if the embodiment of the present application is applied to the network architecture shown in fig. 1D, the first terminal device described below may be the terminal device 1 (i.e., a relay terminal device) in the network architecture shown in fig. 1D, the second terminal device described below may be the terminal device 2 (i.e., a remote terminal device) in the network architecture shown in fig. 1D, the first core network device described below may be the core network device 1 in the network architecture shown in fig. 1D, and the second core network device described below may also be the core network device 2 in the network architecture shown in fig. 1D; alternatively, the first terminal device described below may be the terminal device 2 in the network architecture shown in fig. 1D, the second terminal device described below may be the terminal device 1 in the network architecture shown in fig. 1D, the first core network device described below may be the core network device 2 in the network architecture shown in fig. 1D, and the second core network device described below may also be the core network device 1 in the network architecture shown in fig. 1D. It can be seen that in this scenario, the first core network device and the second core network device are different core network devices.
S201, the second terminal device sends the ninth identifier to the first terminal device, and correspondingly, the first terminal device receives the ninth identifier from the second terminal device.
The ninth identity is a current identity of the second terminal device, for example, the ninth identity may be a subscription hidden identifier (sui), a subscription permanent identifier (SUPI), an IMSI, a 5G-globally unique temporary UE identity (GUTI), a 5G-S-TMSI, a 5G-TMSI, a UE _ ID mod N, or a UE _ ID mod (N × N)s) Any one of them. About N, NsAnd introduction of features such as UE _ ID, etc., reference is made to the foregoing. Where denotes multiplication, also written as x, e.g. N x NsCan also be expressed as NxNs. Each terminal/subscribing device in a 5G system is assigned a globally unique SUPI. SUCI is a privacy preserving identity that contains a hidden SUPI. The second terminal device may send the ninth identifier to the first terminal device, for example, through a PC5-RRC message, or send the ninth identifier to the first terminal device through a discovery (discovery) message, or may also send the ninth identifier to the first terminal device through a PC 5-signaling (S) message. The discovery message is used in a discovery process of the second terminal device and the first terminal device, for example, the second terminal device discovers the first terminal device through the discovery message.
As an alternative to the above-described embodiment,if the ninth identity is UE _ ID mod N, the second terminal device may further send a value of N or send log to the first terminal device2N; or, if the ninth identity is UE _ ID mod (N x N)s) Then the second terminal device may also send (N x N) to the first terminal devices) Or send log2(N*Ns)。
S202, the first terminal device sends the first identifier to the first core network device, and accordingly, the first core network device receives the first identifier from the first terminal device. The first identity may be used to determine a new identity of the first terminal device.
For example, the first identifier may be an identifier of the second terminal device, for example, the first identifier is obtained according to the ninth identifier; alternatively, the first identifier may also be a current identifier of the first terminal device. The first terminal device sends the first identifier to the first core network device through a non-access stratum (NAS) message, for example, the NAS message may multiplex a currently existing message, for example, a registration request (registration request) message of the first terminal device, or a message used by the first terminal device to request a service, or the NAS message may be a message that is newly added in this embodiment and is dedicated to sending the first identifier.
For example, the first identity may be SUCI, SUPI, IMSI, 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N)s) Any one of them. If the first identifier is the identifier of the second terminal device and the first identifier is obtained according to the ninth identifier, for example, a manner of obtaining the first identifier according to the ninth identifier is that the first identifier and the ninth identifier are the same identifier, for example, the first identifier and the ninth identifier are both suics, or both 5G-GUTI, or both UE _ ID mod N, so that the first terminal device only needs to forward the ninth identifier to the first core network device, and does not need to perform other processing, thereby simplifying the operation of the first terminal device. For another example, another way to obtain the first identifier according to the ninth identifier is that the first identifier and the ninth identifier are different identifiers, but the first identifier is determined according to the ninth identifier. For example, the ninth identity is 5 of the second terminal deviceG-GUTI and the first identity may be the 5G-S-TMSI of the second terminal device. It can be seen that, if the first identifier is the identifier of the second terminal device, the first identifier and the ninth identifier may be the same or different, which is more flexible.
For example, the ninth identity is a 5G-GUTI of the second terminal device and the first identity is a 5G-S-TMSI of the second terminal device, then one way to determine the ninth identity from the first identity is that the 5G-S-TMSI can be determined from the AMF set ID, the AMF pointer and the 5G-TMSI contained in the 5G-GUTI.
For another example, if the ninth identifier is a 5G-GUTI of the second terminal device and the first identifier is a UE _ ID of the second terminal device, then one way to determine the ninth identifier from the first identifier is to determine the 5G-S-TMSI of the second terminal device according to the AMF set ID, the AMF pointer and the 5G-TMSI contained in the 5G-GUTI, and thus determine the UE _ ID of the second terminal device to be (5G-S-TMSI mod 1024). Alternatively, the UE _ ID of the second terminal device may be determined to be (5G-TMSI mod 1024) based on the 5G-TMSI included in the 5G-GUTI. Alternatively, the UE _ ID of the second terminal device may also be determined to be (5G-GUTI mod 1024) from the 5G-GUTI.
For another example, the ninth identifier is 5G-S-TMSI of the second terminal device, and the first identifier is UE _ ID mod N of the second terminal device, then one way to determine the ninth identifier according to the first identifier is to determine (UE _ ID mod N) of the second terminal device as (5G-S-TMSI mod 1024) mod N, or as (5G-S-TMSI mod 1024 × N). Alternatively, the (UE _ ID mod N) of the second terminal device may be determined to be (5G-TMSI mod 1024) mod N by determining 5G-TMSI from the 5G-S-TMSI.
As an optional implementation manner, if the first identifier is UE _ ID mod N, the first terminal device may further send a value of N or send log to the first core network device 2N; alternatively, if the first identity is UE _ ID mod (N x N)s) Then, the first terminal device may further send (N × N) to the first core network devices) Or send log2(N*Ns)。
In addition, if the second terminal device provides the relay service for the first terminal device, for example, the second terminal device is the terminal device 1 in the scenario shown in fig. 1C or fig. 1D, and the first terminal device is the terminal device 2 in the scenario shown in fig. 1C or fig. 1D, as an optional implementation, the first terminal device may further send a first message to the first core network device, and the first core network device may receive the first message from the first terminal device, and the first message may indicate that the first terminal device requests to monitor paging through the second terminal device. For example, the first message may be a newly added message in the embodiment of the present application, and is dedicated to instruct the first terminal device to request to monitor paging through the second terminal device, for example, the first message is an NAS message; alternatively, the first message may also be a currently existing message, for example, the first message may be a registration request message of the first terminal device, or a message that the first terminal device requests a service, or may also be a message that instructs the first terminal device to communicate with the network through the second terminal device (or instructs the second terminal device to provide a relay service for the first terminal device), and the like. Optionally, the first message may include first information, where the first message is a message added newly in the embodiment of the present application, or a registration request message of the first terminal device, or a message used by the first terminal device to request a service, and the first information is used to indicate that the first terminal device requests to monitor paging through the second terminal device. Or, if the first message is a message indicating that the first terminal device communicates with the network through the second terminal device, the first message may include the first information, or the first message may also include no first information, that is, the first message indicates that the first terminal device communicates with the network through the second terminal device, that is, the default indicates that the first terminal device requests to listen to a page through the second terminal device, which is an implicit indication manner, which helps to reduce the information amount of the first message.
For example, the first message may indicate that the first terminal device requests to listen to paging through the second terminal device, and may further include the first identifier, so that the first terminal device does not need to send too many messages to the first core network device, so as to save signaling overhead. Alternatively, the first message does not include the first identity, and the first message and the first identity are sent separately. If this is the case, the first terminal device may send the first message first and then send the first identifier, or may send the first identifier first and then send the first message, or may send the first message and the first identifier at the same time. The indication can be made more explicit by instructing the first terminal device to request listening for pages by the second terminal device through a dedicated message.
Or, if the second terminal device provides the relay service for the first terminal device, for example, the second terminal device is the terminal device 1 in the scenario shown in fig. 1C or fig. 1D, and the first terminal device is the terminal device 2 in the scenario shown in fig. 1C or fig. 1D, as another optional implementation, the first terminal device may also send the first message to the first core network device without sending the first message, and only needs to send the first identifier to the first core network device, and the first identifier may also indicate the first terminal device to request to monitor paging through the second terminal device. This is also an implicit indication mode, which can reduce the amount of signaling and save signaling overhead.
If the first terminal device provides the relay service for the second terminal device, the first terminal device may also send a first message to the first core network device to indicate the second terminal device to request to monitor paging through the first terminal device; alternatively, the first terminal device may also not send the first message to the first core network device, but instruct the second terminal device to request to monitor paging through the first terminal device in an implicit indication manner, which is similar to the above implementation.
S203, the first core network device determines the identifier of the first terminal device as the second identifier according to the first identifier.
For example, the second terminal device provides a relay service for the first terminal device, and the first core network device may determine, according to a corresponding policy of the first core network device, whether to allow the second terminal device to monitor paging through the first terminal device, and may perform S203 if the first core network device determines to allow the second terminal device to monitor paging through the first terminal device, or the first core network device may not perform S203 and the process is ended if the first core network device does not allow the second terminal device to monitor paging through the first terminal device, or may not perform S203 but continue to perform S204 if the first core network device does not allow the second terminal device to monitor paging through the first terminal device; for another example, the first terminal device provides the relay service for the second terminal device, and the first core network device may determine whether to allow the first terminal device to monitor the paging through the second terminal device according to a corresponding policy of the first core network device, and may perform S203 if the first core network device determines that the second terminal device is allowed to monitor the paging through the first terminal device, or the first core network device may not perform S203 and the process is ended if the first core network device does not allow the second terminal device to monitor the paging through the first terminal device, or may not perform S203 but continue to perform S204 if the first core network device does not allow the second terminal device to monitor the paging through the first terminal device. Alternatively, the first core network device may not perform the determining step, and perform S203 after performing S202.
If the first identifier is an identifier of the first terminal device, the first core network device may query a second terminal device that determines to have an association with the first terminal device, for example, the first core network device may determine, by querying subscription data of the first terminal device, the second terminal device that has an association with the first terminal device, so as to determine an identifier of the second terminal device, for example, the determined identifier of the second terminal device is a third identifier, and the first core network device may determine, according to the third identifier, the identifier of the first terminal device is a second identifier. The third identifier may be the ninth identifier, or may also be another identifier of the second terminal device. The association relationship here refers to, for example, a relay relationship, and may be that the second terminal device provides a relay service for the first terminal device, or may be that the first terminal device provides a relay service for the second terminal device. Or, the third identifier is an identifier of a second terminal device having a relay relationship with the first terminal device, and may be understood as: if the second terminal equipment provides the relay service for the first terminal equipment, the third identifier is the identifier of the second terminal equipment providing the relay service for the first terminal equipment; or, if the first terminal device provides the relay service for the second terminal device, the third identifier is an identifier of the second terminal device for which the first terminal device provides the relay service.
Or, if the first identifier is an identifier of the second terminal device, the first core network device may determine, according to the first identifier, that the identifier of the first terminal device is the second identifier. For example, the first identifier is 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N × N)s) The first core network device may determine the second identifier for the first terminal device according to the first identifier.
Or, if the first identifier is the identifier of the second terminal device, the first core network device may also convert the first identifier first, that is, the first core network device determines the third identifier according to the first identifier, and then determines the identifier of the first terminal device as the second identifier according to the third identifier. In this case, the third identifier is still the identifier of the second terminal device, for example, the third identifier may be the ninth identifier, or may be another identifier of the second terminal device. For example, the first identity is SUCI, SUPI or IMSI, etc., which may not directly participate in the PO of the computing terminal device, so the first core network device may determine a third identity from the first identity, e.g., 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N × N) s) Any one of them. The third identifier can participate in the calculation of the PO of the terminal device, so that the first core network device can determine the PO of the second terminal device according to the third identifier, and thus, the identifier of the first terminal device can be determined to be the second identifier according to the relation that needs to be satisfied between the PO of the first terminal device and the PO of the second terminal device. Or, the first core network device may also determine, directly according to the third identifier, that the identifier of the first terminal device is the second identifier, without determining the second identifier through the PO. The relationship that needs to be satisfied between the POs of two terminal devices will be described in the next paragraph.
The first core network device determines that the first terminal device is the second identifier, and is to make a PO corresponding to the second identifier (for example, a PO determined according to the second identifier) be the same as a PO of the second terminal device, or a time-domain distance between a PO corresponding to the second identifier and a PO of the second terminal device is smaller than or equal to a first threshold, or a PO corresponding to the second identifier and a PO of the second terminal device are partially or completely overlapped in a time domain, as described above, the three relations that need to be satisfied between the POs of the two terminal devices in the embodiment of the present application only need to satisfy any one of them, and certainly, any two or three of them may be satisfied at the same time. The PO of the second terminal device may be determined, for example, according to the ninth identifier, or, if the first identifier is an identifier of the second terminal device, may also be determined according to the first identifier, or may also be determined according to another identifier of the second terminal device. For example, the first terminal device is a far-end terminal device, the second terminal device is a relay terminal device, and if the PO corresponding to the second identifier is the same as the PO of the second terminal device, the second terminal device can monitor the paging of the first terminal device and the paging of the second terminal device on the same PO, and does not need to wake up in more time to monitor the paging, which is beneficial to reducing the power consumption of the second terminal device; or, if the time-domain distance between the PO corresponding to the second identifier and the PO of the second terminal device is less than or equal to the first threshold, it indicates that the time-domain distance of the PO determined according to the identifiers of the two terminal devices is smaller, the second terminal device may monitor the paging of the first terminal device and the paging of the second terminal device in a relatively short time, for example, after monitoring the paging of one of the terminal devices, the second terminal device may not enter the sleep state, but enter the sleep state after the paging of the other terminal device is monitored, the second terminal device only needs to wake up once, because the POs of the two terminal devices are relatively close in the time domain, the power consumption caused by such waiting of the second terminal device may be less than the power consumption caused by waking up after sleeping; or, the PO corresponding to the second identifier and the PO of the second terminal device are partially or completely overlapped in the time domain, and in the time domain range where the POs is overlapped, the second terminal device can monitor the paging of both the first terminal device and the second terminal device, and compared with the prior art in which the relay terminal device completely monitors the paging of both the terminal devices in different POs, the method can also reduce the power consumption of the relay terminal device.
The unit of the first threshold is, for example, a radio frame, a subframe, a slot, or T/N.
As an alternative embodiment, the first threshold value may be determined by the second terminal device.
For example, after determining the first threshold, the second terminal device may send the first threshold to the first terminal device, and the first terminal device sends the first threshold to the first core network device.
Or, the second terminal device may send the first threshold to the first terminal device after determining the first threshold, and the first terminal device may determine the second threshold, the third threshold, the fourth threshold, or the fifth threshold according to the first threshold. And the first terminal equipment sends the determined threshold value to the first core network equipment, wherein the determined threshold value is a second threshold value, a third threshold value, a fourth threshold value or a fifth threshold value.
Or, after determining the first threshold, the second terminal device may send the first threshold to the first terminal device, and the first terminal device may determine an identifier range according to the first threshold (for example, the first terminal device may determine the second threshold, the third threshold, the fourth threshold, or the fifth threshold according to the first threshold, and then determine the identifier range according to the determined threshold), and the first terminal device sends the identifier range to the first core network device. The identification range may be 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N x N) s) To which range it belongs.
As another alternative, the first threshold may also be determined by the first core network device.
As a further alternative, the first threshold value may also be determined by the first terminal device.
For example, the first terminal device may send the first threshold to the first core network device after determining the first threshold.
Alternatively, after determining the first threshold, the first terminal device may determine the second threshold, the third threshold, the fourth threshold, or the fifth threshold according to the first threshold. The first terminal device sends the determined threshold to the first core network device, and the determined threshold is the second threshold, the third threshold, the fourth threshold or the fifth threshold
Or, after determining the first threshold, the first terminal device may determine an identifier range according to the first threshold (for example, the first terminal device may determine the second threshold, the third threshold, the fourth threshold, or the fifth threshold according to the first threshold, and then determine the identifier range according to the determined threshold), and the first terminal device sends the identifier range to the first core network device. The identification range may be 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N x N) s) To which range it belongs.
Alternatively, the above three relationships can be understood as that the UE _ ID corresponding to the second identifier is the same as the corresponding UE _ ID of the second terminal device, or that the UE _ ID mod N corresponding to the second identifier is the same as the UE _ ID mod N of the second terminal device, or that the UE _ ID mod (N × N) corresponding to the second identifier is mod (N × N)s) UE _ ID mod (N × N) with the second terminal devices) The same, or, the UE _ ID corresponding to the second identifier is made similar to the UE _ ID of the second terminal device (e.g., the difference (or interval) between the UE _ ID corresponding to the second identifier and the UE _ ID of the second terminal device is less than or equal to a second threshold), or the (UE _ ID mod N) corresponding to the second identifier is made similar to the (UE _ ID mod N) of the second terminal device (e.g., the difference (or interval) between the (UE _ ID mod N) corresponding to the second identifier and the (UE _ ID mod N) of the second terminal device is less than or equal to a third threshold), or the (UE _ ID mod (N × N) corresponding to the second identifier is made similar to the (UE _ ID mod N) corresponding to the second identifiers) With the second terminal device (UE _ ID mod (N × N)s) (e.g. such that the second identity corresponds to (UE _ ID mod (N × N))s) With the second terminal device (UE _ ID mod (N × N)s) Is less than or equal to a fourth threshold value), or such that the UE _ ID mod N corresponding to the second identity is the same as the UE _ ID mod N of the second terminal device and the (floor (UE _ ID/N) mod N corresponding to the second identity is the same s) (floor (UE _ ID/N) mod N with a second terminal devices) Proximity (e.g., second identification pair)(floor (UE _ ID/N) mod N accordinglys) (floor (UE _ ID/N) mod N with a second terminal devices) The difference (or interval) therebetween is less than or equal to the fifth threshold). The three relations between the POs are relations that the PO of the first terminal device and the PO of the second terminal device need to satisfy in the embodiment of the present application, the seven relations between the identifiers are relations that the identifier of the first terminal device and the identifier of the second terminal device need to satisfy in the embodiment of the present application, and the relations between the POs and the identifiers may be considered to be consistent. For example, if the identities of two terminal devices satisfy any one of the relationships between the identities, the POs of the two terminal devices can satisfy one or more of the relationships between the POs; alternatively, if the POs of two terminal devices satisfy any of the relationships between the POs, the identities of the two terminal devices can satisfy one or more of the relationships between the identities. Thus, three relationships between POs as above, and seven relationships between logos as above, may be substituted for each other. For example, the technical solution of the embodiment of the present application may be considered to enable the PO of the first terminal device and the PO of the second terminal device to satisfy three relationships between the POs, or may also be considered to enable the identifier of the first terminal device and the identifier of the second terminal device to satisfy seven relationships between the identifiers.
The PO corresponding to the second identifier and the PO of the second terminal device partially overlap or completely overlap in the time domain, which may be different. For example, in a case where the POs corresponding to the second identifier and the POs of the second terminal device span different numbers of radio frames, but start times are the same, such that the two POs partially overlap in a time domain, for example, the PO corresponding to the second identifier spans 3 consecutive radio frames, and the PO of the second terminal device spans 2 consecutive radio frames, the two POs overlap in a time domain of the PO of the second terminal device, but do not overlap in a 3 rd radio frame. For another example, the number of the radio frames spanned by the PO corresponding to the second identifier and the PO of the second terminal device is the same, but the start times are different, so that the two POs partially overlap in the time domain, for example, the PO corresponding to the second identifier spans 3 consecutive radio frames, the PO of the second terminal device also spans 3 consecutive radio frames, but the start time of the PO corresponding to the second identifier is located on PF 1, the start time of the PO of the second terminal device is located on PF 2, PF 2 is the next radio frame adjacent to PF 1, and then the two POs overlap on the next radio frame adjacent to PF 2 and PF 2. For another example, in another case, the number of the radio frames spanned by the PO corresponding to the second identifier and the PO of the second terminal device are different, and the start times are also different, in this case, the two POs are partially overlapped in the time domain, for example, the PO corresponding to the second identifier spans 2 consecutive radio frames, the PO of the second terminal device spans 3 consecutive radio frames, the start time of the PO corresponding to the second identifier is located on PF 1, the start time of the PO of the second terminal device is located on PF 2, and PF 2 is the next radio frame adjacent to PF 1, so the two POs are overlapped on PF 2. For example, in another case, if the number of radio frames spanned by the PO corresponding to the second identifier and the PO of the second terminal device is the same, and the starting times are also the same, then the two POs may completely overlap in the time domain, and the two POs are the same.
The PO of a terminal device may be determined based on the identity of the terminal device. For example, if the identity of the terminal device is 5G-GUTI, then 5G-S-TMSI can be determined according to the AMF set ID, AMF pointer and 5G-TMSI contained in the 5G-GUTI, and PO can be determined according to the UE _ ID (i.e. 5G-S-TMSI mod 1024), where PO is PO of the terminal device. Alternatively, the 5G-TMSI contained in the 5G-GUTI can be determined, the value of (5G-TMSI mod 1024) is used as the value of the UE _ ID, and the PO is determined according to the UE _ ID. Alternatively, the value of (5G-GUTI mod 1024) is used as the value of UE _ ID, and PO is determined according to the UE _ ID. For example, PO can be determined according to equation 2 as previously described.
Alternatively, if the identity of the terminal device is 5G-S-TMSI, the PO for the terminal device can be determined from the UE _ ID of the terminal device (i.e., 5G-S-TMSI mod 1024). Alternatively, the 5G-TMSI contained in the 5G-S-TMSI may be determined, the value of (5G-TMSI mod 1024) may be used as the value of the UE _ ID, and the PO may be determined according to the UE _ ID. For example, PO can be determined according to equation 2 as previously described.
Alternatively, if the identity of the terminal device is 5G-TMSI, the value of (5G-TMSI mod 1024) may be used as the value of UE _ ID, and PO may be determined based on the UE _ ID. For example, PO can be determined according to equation 2 as previously described.
Alternatively, if the identity of the terminal device is (UE _ ID mod N), the PF of the terminal device may be determined (e.g., the PF of the terminal device may be determined according to equation 1 as described above), and the POs of the terminal device are all POs associated with the PF.
Or if the identity of the terminal device is UE _ ID mod (N x N)s) Then (UE _ ID mod (N x N) may be addeds) mod N) as the value of (UE _ ID mod N), and (UE _ ID mod (N × N)s) /N) as the value of UE _ ID/N, thereby determining the PO of the terminal device. For example, PO can be determined according to equation 2 as previously described.
Alternatively, if the identity of the terminal device is SUPI/SUCI/IMSI, the corresponding 5G-GUTI or 5G-S-TMSI or 5G-TMSI or UE _ ID mod N or UE _ ID mod (N x N) can be determined according to the SUPI/SUCI/IMSIs) And then determining the PO of the terminal equipment. For example, PO can be determined according to equation 2 as previously described.
If the first core network device determines that the current identifier of the first terminal device can make the PO of the first terminal device and the PO of the second terminal device satisfy any one or more of the above three relationships between POs, or the first core network device determines that the current identifier of the first terminal device can make the identifier of the first terminal device and the identifier of the second terminal device satisfy any one or more of the above seven relationships between identifiers, the first core network device may not need to allocate a new identifier to the first terminal device, and in this case, the first core network device determines that the current identifier of the first terminal device is the second identifier. For example, if the first identity is an identity of the first terminal device, the current identity of the first terminal device may be the first identity.
If the first core network device determines that the current identifier of the first terminal device cannot make the PO of the first terminal device and the PO of the second terminal device satisfy each of the three relationships between the POs, or if the first core network device determines that the current identifier of the first terminal device can make the identifier of the first terminal device and the identifier of the second terminal device satisfy each of the seven relationships between the identifiers, the first core network device may assign a new identifier to the first terminal device, and at this time, the new identifier assigned by the first core network device to the first terminal device is referred to as a second identifier. In the embodiment of the present application, allocating a new identifier to a terminal device may also be described as reallocating the identifier to the terminal device, or may be described as configuring a new identifier to the terminal device, or may be described as reconfiguring the identifier to the terminal device.
The second identity is for example a 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N x N) of the first terminal devices) Any one of them.
The first core network device may allocate a new identifier to the first terminal device according to any one or more of the above three relationships, and the following description takes as an example that the first core network device allocates a new identifier to the first terminal device according to the above first relationship. Wherein, the first relation is that the PO corresponding to the second identifier is the same as the PO of the second terminal device.
The first distribution mode,
As can be seen from the foregoing formula 1 or formula 2, when calculating PF or PO, the UE _ ID of the terminal device is directly related to the calculation process, and therefore, to make the PO corresponding to the second identifier identical to the PO of the second terminal device, one implementation manner is to make the PO corresponding to the UE _ ID corresponding to the second identifier (for example, the PO determined according to the UE _ ID corresponding to the second identifier) identical to the PO determined according to the UE _ ID of the second terminal device. In order to make the PO corresponding to the UE _ ID corresponding to the second identifier the same as the PO determined according to the UE _ ID of the second terminal device, an implementation manner may be to make the UE _ ID corresponding to the second identifier the same as the UE _ ID of the second terminal device.
For example, the first core network device may allocate a second identifier to the first terminal device, and if the second identifier is the UE _ ID of the first terminal device, the PO corresponding to the second identifier may be made to be the same as the PO determined according to the UE _ ID of the second terminal device. For example, the second identifier is the same as the UE _ ID of the second terminal device, and the PO corresponding to the second identifier is the same as the PO determined according to the UE _ ID of the second terminal device. Wherein, the second identifier is a UE _ ID, and the UE _ ID is actually a part with 10 bits lower than the 5G-S-TMSI/5G-GUTI, then the first core network device allocates a new UE _ ID to the first terminal device, which may be a part with 10 bits lower than the 5G-S-TMSI/5G-GUTI allocated to the first terminal device, and values of other bits except the 10 bits lower than the 5G-S-TMSI/5G-GUTI may be unchanged.
Or, if the second identity is not a UE _ ID, for example, the second identity is a 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N x N) of the first terminal devices) The UE _ ID corresponding according to the second identity may be made the same as the UE _ ID of the second terminal device.
The second distribution mode,
In the first allocation manner, to make the PO corresponding to the second identifier the same as the PO of the second terminal device, one implementation manner is to make the PO corresponding to the UE _ ID corresponding to the second identifier the same as the PO determined according to the UE _ ID of the second terminal device. In order to make the PO corresponding to the UE _ ID corresponding to the second identifier the same as the PO determined according to the UE _ ID of the second terminal device, another implementation manner may be to make the UE _ ID mod N corresponding to the second identifier the same as the UE _ ID mod N of the second terminal device. Because the value of N is the same, if the UE _ ID mod N corresponding to the second identifier is the same as the UE _ ID mod N of the second terminal device, it indicates that the UE _ ID corresponding to the second identifier is the same as the UE _ ID of the second terminal device.
For example, the first core network device may assign a second identifier to the first terminal device, and if the second identifier is UE _ ID mod N of the first terminal device, the PO corresponding to the second identifier may be made to be the same as the PO determined according to UE _ ID of the second terminal device. For example, the second identifier is the same as the UE _ ID mod N of the second terminal device, and the PO corresponding to the second identifier is the same as the PO determined according to the UE _ ID of the second terminal device. Where the second identity is UE _ ID mod N, which is effectively 5G-S-TMSI Low (log) in/5G-TMSI/5G-GUTI2N) bits, the first core network device assigns a new UE _ ID mod N to the first terminal device, which may be a low (log) allocation of 5G-S-TMSI/5G-GUTI to the first terminal device2N) bit fraction, and low (log) in 5G-S-TMSI/5G-TMSI/5G-GUTI2N) bits may be unchanged.
Or, if the second identity is not UE _ ID mod N, e.g. the second identity is 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID, or UE _ ID mod (N x N) of the first terminal devices) The UE _ ID mod N corresponding to the second identity may be made the same as the UE _ ID mod N of the second terminal device.
Distribution method III,
In the first allocation manner, to make the PO corresponding to the second identifier the same as the PO of the second terminal device, one implementation manner is to make the PO corresponding to the UE _ ID corresponding to the second identifier the same as the PO determined according to the UE _ ID of the second terminal device. In order to make the PO corresponding to the UE _ ID corresponding to the second identifier the same as the PO determined according to the UE _ ID of the second terminal device, another implementation manner may be to make the UE _ ID mod (N × N) corresponding to the second identifiers) UE _ ID mod (N × N) with the second terminal devices) The same is true. Since N has the same value, N sAlso, if the second identifier corresponds to UE _ ID mod (N × N)s) UE _ ID mod (N × N) with the second terminal devices) The same, i.e. indicating that the UE _ ID corresponding to the second identity is the same as the UE _ ID of the second terminal device.
For example, the first core network device may assign a second identifier to the first terminal device, if the second identifier is UE _ ID mod (N × N) of the first terminal devices) The PO corresponding to the second identity may be made the same as the PO determined from the UE _ ID of the second terminal device. For example, the second identity is associated with a UE _ ID mod (N × N) of the second terminal devices) The PO corresponding to the second identity is the same as the PO determined by the UE _ ID of the second terminal device. Wherein the second identity is UE _ ID mod (N × N)s)，UE_ID mod(N*Ns) In fact, it is actually low (log) in 5G-S-TMSI/5G-TMSI/5G-GUTI2N) bit portion, thatHow the first core network device assigns a new UE _ ID mod (N × N) to the first terminal devices) It may be that the allocation of the 5G-S-TMSI/5G-TMSI/5G-GUTI for the first terminal device is low (log)2(N*Ns) Bit part) and low (log) in 5G-S-TMSI/5G-TMSI/5G-GUTI2(N*Ns) ) the value of other bits than the bit may be unchanged.
Or, if the second identity is not UE _ ID mod N, e.g. the second identity is 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID, or UE _ ID mod (N x N) of the first terminal device s) The UE _ ID mod N corresponding to the second identity may be made the same as the UE _ ID mod N of the second terminal device.
The distribution mode is four,
As can be known from the foregoing formula 1 or formula 2, when calculating the PF or PO, the UE _ ID of the terminal device is directly related to the calculation process, and therefore, to make the time domain distance between the PO corresponding to the second identifier and the PO of the second terminal device similar, one implementation manner is to make the time domain distance between the PO corresponding to the UE _ ID corresponding to the second identifier (for example, the PO determined according to the UE _ ID corresponding to the second identifier) and the PO determined according to the UE _ ID of the second terminal device similar. To make the time domain distance between the PO corresponding to the UE _ ID corresponding to the second identifier and the PO determined according to the UE _ ID of the second terminal device similar, one implementation manner may be to make the UE _ ID corresponding to the second identifier and the UE _ ID of the second terminal device similar. For example, the difference (or, referred to as interval) between the UE _ ID corresponding to the second identity and the UE _ ID of the second terminal device may be made smaller than or equal to the second threshold. The second threshold may be predefined, or determined by the first terminal device or the second terminal device and sent to the first core network device, or determined by the first core network device. For example, the first terminal device, the second terminal device or the first core network device may be based on the first threshold, N or N sDetermines the second threshold.
Yet another way to make the time domain distance between the PO corresponding to the second identity and the PO according to the second terminal device similar is to make the (UE _ ID mod N) corresponding to the second identity and the (U) of the second terminal deviceE _ ID mod N) are similar. For example, the difference (or interval) between the (UE _ ID mod N) corresponding to the second identity and the (UE _ ID mod N) of the second terminal device may be made smaller than or equal to the third threshold. The third threshold may be predefined, or determined by the first terminal device or the second terminal device and sent to the first core network device, or determined by the first core network device. The first terminal device, the second terminal device or the first core network device may be based on the first threshold, N or NsDetermines a third threshold.
Another way to make the time domain distance between the PO corresponding to the second identifier and the PO according to the second terminal device similar is to make the (UE _ ID mod (N × N) corresponding to the second identifiers) With the second terminal device (UE _ ID mod (N × N)s) Are close. For example, the second identity may be made to correspond (UE _ ID mod (N × N)s) With the second terminal device (UE _ ID mod (N × N)s) ) is less than or equal to a fourth threshold value. The fourth threshold may be predefined, or determined by the first terminal device or the second terminal device and sent to the first core network device, or determined by the first core network device. The first terminal device, the second terminal device or the first core network device may be based on the first threshold, N or N sDetermines a fourth threshold.
Another implementation manner for making the time domain distance between the PO corresponding to the second identifier and the PO according to the second terminal device similar is to make (UE _ ID mod N) corresponding to the second identifier the same as (UE _ ID mod N) of the second terminal device, and make (floor (UE _ ID/N) mod N corresponding to the second identifiers) (floor (UE _ ID/N) mod N with a second terminal devices) Close. For example, a (floor (UE _ ID/N) mod N corresponding to the second identity may be mades) (floor (UE _ ID/N) mod N with a second terminal devices) The difference (or interval) therebetween is less than or equal to the fifth threshold. The fifth threshold may be predefined, or determined by the first terminal device or the second terminal device and sent to the first core network device, or determined by the first core network device. The first terminal device, the second terminal device or the first core network device mayAccording to a first threshold, N or NsDetermines a fifth threshold. Where floor (x) denotes rounding down x.
And under the condition that the time domain distance between the PO corresponding to the second identifier and the PO of the second terminal equipment is close, the PO corresponding to the second identifier is partially overlapped with the PO of the second terminal equipment.
As an alternative, the second threshold value may be determined by the second terminal device.
For example, after determining the second threshold, the second terminal device may send the second threshold to the first terminal device, and the first terminal device sends the second threshold to the first core network device.
Or, after determining the second threshold, the second terminal device may send the second threshold to the first terminal device, and the first terminal device may determine an identifier range according to the second threshold, and then the first terminal device sends the identifier range to the first core network device. The identification range may be 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N x N)s) To which range it belongs.
As another alternative, the second threshold may also be determined by the first core network device.
As a further alternative, the second threshold value may also be determined by the first terminal device.
For example, the first terminal device may send the second threshold to the first core network device after determining the second threshold.
Or after determining the second threshold, the first terminal device may determine an identifier range according to the second threshold, and the first terminal device sends the identifier range to the first core network device. The identification range may be 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N x N) s) To which range it belongs.
Regarding the third threshold, the fourth threshold, or the fifth threshold, the determination manner, the transmission manner, and the like are also similar to the second threshold, and the above description of the determination manner and the transmission manner of the second threshold may be referred to.
The foregoing several allocation manners are merely examples, and this embodiment of the application does not limit the manner in which the first core network device allocates the second identifier to the first terminal device.
If the first core network device cannot allocate a new identifier to the first terminal device according to the above three relationships, the first core network device may not allocate a new identifier to the first terminal device, that is, does not allocate the second identifier. In this case, the flow may end, or the execution may also continue to S204.
S204, the first core network device establishes an association relation for the first terminal device and the second terminal device. The association relationship here may be used to enable the identifier of the first terminal device and the identifier of the second terminal device to be consistent, so that the identifier of the first terminal device and the identifier of the second terminal device can satisfy any one or more of the seven relationships between the identifiers described above, or may enable the PO of the first terminal device and the PO of the second terminal device to satisfy any one or more of the three relationships between the POs described above; alternatively, the association relationship here may be used to enable the PO of the first terminal device and the PO of the second terminal device to be consistent, so that the PO of the first terminal device and the PO of the second terminal device can satisfy any one or more of the three relationships between the POs described above, or so that the identity of the first terminal device and the identity of the second terminal device can satisfy any one or more of the seven relationships between the identities described above. If the first terminal device and the second terminal device are both 5G terminal devices, the identifiers of the first terminal device and the second terminal device are required to be kept consistent (or the PO of the first terminal device and the PO of the second terminal device are required to be kept consistent), and both the identifiers of the two terminal devices can be changed and kept consistent; or, if one of the terminal devices is a 4G terminal device and the other terminal device is a 5G terminal device, the identifier of the 4G terminal device cannot be changed, so that, in order to keep the identifiers of the first terminal device and the second terminal device consistent (or to make the PO of the first terminal device and the PO of the second terminal device consistent), the identifier of the 5G terminal device may be changed, so as to keep the same or close to the identifier of the 4G terminal device, so as to keep the identifiers of the two terminal devices consistent. To distinguish from the foregoing association relationship for representing the relay relationship, the association relationship here may be referred to as a second association relationship, and the foregoing relay relationship may be referred to as a first association relationship. Alternatively, the first association relationship and the second association relationship may be different association relationships, or the first association relationship and the second association relationship may be the same association relationship.
The first core network device establishes a second association relationship for the first terminal device and the second terminal device, and one implementation manner is that the first core network device associates the current identifier of the first terminal device with the current identifier of the second terminal device. For example, if the first core network device allocates the second identifier to the first terminal device, the current identifier of the first terminal device may be the second identifier, and if the first core network device does not allocate the second identifier to the first terminal device and the first identifier is the identifier of the first terminal device, the current identifier of the first terminal device is, for example, the first identifier. The current identifier of the second terminal device is, for example, the ninth identifier, or the third identifier, or may be another identifier of the second terminal device.
The first core network device establishes a second association relationship for the first terminal device and the second terminal device, and another implementation manner is that the first core network device includes a current identifier of the second terminal device in a context of the first terminal device.
The first core network device establishes an association relationship for the first terminal device and the second terminal device, so that if the identifier of the first terminal device changes and the first core network device and the second core network device are different core network devices, the first core network device can request the second core network device to allocate a new identifier to the second terminal device, so that the PO of the first terminal device and the PO of the second terminal device can continuously satisfy any one or more of the above three relationships between POs, or so that the identifier of the first terminal device and the identifier of the second terminal device can continuously satisfy any one or more of the above seven relationships between identifiers. Or, the first core network device establishes an association relationship for the first terminal device and the second terminal device, and if the identifier of the first terminal device changes but the identifier of the second terminal device cannot change (for example, the second terminal device is a 4G terminal device), or the identifier of the second terminal device does not need to change (for example, after the identifier of the first terminal device changes, the PO of the first terminal device and the PO of the second terminal device can continuously satisfy any one or more of the above three relationships between POs, or the identifier of the first terminal device and the identifier of the second terminal device can continuously satisfy any one or more of the above seven relationships between identifiers), the first core network device may not need to request the second core network device to allocate a new identifier to the second terminal device, but the first core network device may ensure as much as possible, the new identifier of the first terminal device also needs to satisfy one or more of the seven relationships between the identifiers and the identifier of the second terminal device as much as possible, or the PO determined according to the new identifier of the first terminal device and the PO of the second terminal device also need to continuously satisfy one or more of the three relationships between the POs as much as possible.
Or, if the first core network device and the second core network device are the same core network device, if the identifier of the first terminal device changes, the first core network device may assign a new identifier to the second terminal device, or, if the identifier of the second terminal device changes, the first core network device may assign a new identifier to the first terminal device, so that the PO of the first terminal device and the PO of the second terminal device can continuously satisfy any one or more of the above three relationships between POs, or so that the identifier of the first terminal device and the identifier of the second terminal device can continuously satisfy any one or more of the above seven relationships between identifiers. Or, the first core network device establishes an association relationship for the first terminal device and the second terminal device, and if the identifier of the first terminal device changes but the identifier of the second terminal device cannot change (for example, the second terminal device is a 4G terminal device), or the identifier of the second terminal device does not need to change (for example, after the identifier of the first terminal device changes, the PO of the first terminal device and the PO of the second terminal device can continuously satisfy any one or more of the above three relationships between POs, or the identifier of the first terminal device and the identifier of the second terminal device can continuously satisfy any one or more of the above seven relationships between identifiers), the first core network device may not need to allocate a new identifier to the second terminal device, but the first core network device may ensure that the new identifier of the first terminal device, it is also necessary to satisfy any one or more of the seven relationships between the identifier and the identifier of the second terminal device as much as possible, or the PO determined according to the new identifier of the first terminal device and the PO of the second terminal device need to continue to satisfy any one or more of the three relationships between the POs as much as possible.
For example, the first core network device and the second core network device are the same core network device, and if the first core network device determines that a new identifier needs to be allocated to the first terminal device, the first core network device may allocate a fourth identifier to the first terminal device, and in addition, the first core network device may allocate a fifth identifier to the second terminal device, for example, the first core network device may allocate the fifth identifier according to the fourth identifier, and the allocation manner may refer to the foregoing description. After allocation, a paging occasion corresponding to the fourth identifier (e.g., a paging occasion determined according to the fourth identifier) may be the same as a paging occasion corresponding to the fifth identifier (e.g., a paging occasion determined according to the fifth identifier), or a time-domain distance between the paging occasion corresponding to the fourth identifier and the paging occasion corresponding to the fifth identifier is smaller than or equal to a first threshold, or the paging occasion corresponding to the fourth identifier and the paging occasion corresponding to the fifth identifier partially overlap or completely overlap in a time domain.
For another example, the first core network device and the second core network device are the same core network device, and if the first core network device determines that a new identifier needs to be allocated to the second terminal device, the first core network device may allocate a fifth identifier to the second terminal device, and in addition, the first core network device may allocate a fourth identifier to the first terminal device, for example, the first core network device may allocate the fourth identifier according to the fifth identifier, and the allocation manner may refer to the foregoing description. After the allocation, the paging occasion corresponding to the fourth identifier may be the same as the paging occasion corresponding to the fifth identifier, or a time-domain distance between the paging occasion corresponding to the fourth identifier and the paging occasion corresponding to the fifth identifier is smaller than or equal to a first threshold, or the paging occasion corresponding to the fourth identifier and the paging occasion corresponding to the fifth identifier are partially overlapped or completely overlapped in a time domain.
The fourth identity is for example a 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N x N) of the first terminal devices). The fifth identity is for example the second terminal device' S5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N)s)。
S205, the first core network device sends a sixth message to the second core network device, and the second core network device receives the sixth message from the first core network device accordingly. The sixth message may request the second core network device to establish an association relationship, i.e., a second association relationship, for the first terminal device and the second terminal device. For example, the sixth message may comprise an identification of the first terminal device, or an identification of the second terminal device, or an identification of the first terminal device and an identification of the second terminal device. For example, the sixth message includes an identity of the first terminal device, e.g., any of the first terminal device' S5G-GUTI, 5G-S-TMSI, 5G-TMSI, SUPI, SUCI, or IMSI. As another example, the sixth message includes an identity of the second terminal device, such as any of the second terminal device' S5G-GUTI, 5G-S-TMSI, 5G-TMSI, SUPI, SUCI, or IMSI.
If the first core network device and the second core network device are different core network devices, S205 may be executed, and if the first core network device and the second core network device are the same core network device, S205 may not be executed, or the first core network device may not request the second core network device to establish an association relationship for the first terminal device and the second terminal device (for example, the first core network device does not establish an association relationship for the first terminal device and the second terminal device, and therefore the first core network device does not request the second core network device to establish an association relationship for the first terminal device and the second terminal device, or, although the first core network device establishes an association relationship for the first terminal device and the second terminal device, the first core network device does not request the second core network device to establish an association relationship for the first terminal device and the second terminal device), s205 is therefore an optional step, indicated by the dashed line in fig. 2. If the first core network device and the second core network device are different core network devices and the assignment of the identifier to the second terminal device is performed by the second core network device, if the identifier of the second terminal device changes, for example, the second core network device assigns a new identifier to the second terminal device, the second core network device needs to establish a second association relationship in order to enable the identifier of the first terminal device and the identifier of the second terminal device to change synchronously. In this way, if the identifier of the second terminal device changes, the second core network device can request the first core network device to allocate a new identifier to the first terminal device, so that the PO of the first terminal device and the PO of the second terminal device can continuously satisfy any one or more of the above three relationships.
After receiving the sixth message, the second core network device may determine whether to accept establishment of an association relationship between the first terminal device and the second terminal device, or, determine whether to accept monitoring paging by the first terminal device through the second terminal device (or, monitoring paging by the second terminal device through the first terminal device), according to a corresponding policy of the second core network device. If the second core network device is acceptable, the second core network device may establish an association relationship for the first terminal device and the second terminal device, and if the second core network device is not acceptable, the second core network device may not establish an association relationship for the first terminal device and the second terminal device.
Optionally, S204 may also occur after S206. In addition, for the second core network device, after S206, an association relationship may be established for the first terminal device and the second terminal device, or after S205, an association relationship may be established for the first terminal device and the second terminal device, and then S206 is performed.
S206, the second core network device sends the seventh message to the first core network device, and the first core network device receives the seventh message from the second core network device accordingly. If the second core network device accepts to establish the association relationship between the first terminal device and the second terminal device, the seventh message may indicate that the second core network device accepts to establish the association relationship between the first terminal device and the second terminal device, or indicate that the second core network device establishes the association relationship between the first terminal device and the second terminal device; or, if the second core network device does not accept to establish the association relationship between the first terminal device and the second terminal device, the seventh message may indicate that the second core network device does not accept to establish the association relationship between the first terminal device and the second terminal device, or indicate that the second core network device does not establish the association relationship between the first terminal device and the second terminal device.
If the first core network device and the second core network device are different core network devices and S205 is executed, S206 may be executed, whereas if the first core network device and the second core network device are the same core network device, S205 and S206 may not be executed, and thus S206 is also an optional step and is indicated by a dotted line in fig. 2.
S207, the first core network device sends the second identifier to the first terminal device, and accordingly, the first terminal device receives the second identifier from the first core network device. Alternatively, S207 may be executed before S205, or may be executed before S204.
If the first core network device allocates the second identifier to the first terminal device in S203, or S203 is executed, S207 may be executed; if the first core network device does not assign the second identifier to the first terminal device in S203 or S203 is not executed, S207 may not be executed, so S207 is an optional step and is indicated by a dashed line in fig. 2.
If the first core network device allocates the second identifier to the first terminal device, the second identifier may be sent to the first terminal device, so that the first terminal device can use the second identifier.
In addition, if the second terminal device provides the relay service for the first terminal device, for example, the second terminal device is the terminal device 1 in the scenario shown in fig. 1C or fig. 1D, and the first terminal device is the terminal device 2 in the scenario shown in fig. 1C or fig. 1D, as an optional implementation, the first core network device may further send a second message to the first terminal device, the first terminal device may receive the second message from the first core network device, and the second message may indicate that the first terminal device is allowed to monitor paging through the second terminal device, or indicate that a second association relationship is established between the first terminal device and the second terminal device. For example, the second message may be a message added in the embodiment of the present application, and is dedicated to indicate that the first terminal device is allowed to monitor paging through the second terminal device; or, the second message may also multiplex an existing message, for example, the second message may be a registration acceptance message sent by the first core network device to the first terminal device, or a message indicating that the first core network device indicates the first terminal device of the corresponding service, or may also be a message indicating that the first terminal device is allowed to communicate with the network through the second terminal device (or indicating that the second terminal device is allowed to provide the relay service for the first terminal device), and the like. Optionally, the second message may include second information, where the second message is a message added newly in the embodiment of the present application, or a registration acceptance message of the first terminal device, or a message used for indicating a service to the first terminal device, and the second information is used for indicating that the first terminal device is allowed to monitor paging through the second terminal device. Alternatively, if the second message is a message indicating that the first terminal device is allowed to communicate with the network through the second terminal device, the second message may include the second information, or the second message may not include the second information, that is, the second message indicates that the first terminal device is allowed to communicate with the network through the second terminal device, that is, the default indication is considered to indicate that the first terminal device is allowed to listen to the page through the second terminal device, which is an implicit indication manner, and this manner helps to reduce the information amount of the second message.
For example, the second message may indicate that the first terminal device requests to listen to paging through the second terminal device, and may further include the second identifier, so that the first core network device does not need to send too many messages to the first terminal device, so as to save signaling overhead. Alternatively, the second message does not include the second identity, and the second message and the second identity are sent separately. If this is the case, the first core network device may send the second message first and then send the second identifier, or may send the second message first and then send the second message, or may send the second message and the second identifier at the same time. The indication can be made more explicit by a dedicated message indication allowing the first terminal device to listen for pages via the second terminal device.
Or, if the second terminal device provides the relay service for the first terminal device, for example, the second terminal device is the terminal device 1 in the scenario shown in fig. 1C or fig. 1D, and the first terminal device is the terminal device 2 in the scenario shown in fig. 1C or fig. 1D, as another optional implementation, the first core network device may also send the second message to the first terminal device, and only needs to send the second identifier to the first core network device, where the second identifier may also indicate that the first terminal device is allowed to monitor paging through the second terminal device. For example, the second identifier indicates that the first terminal device is allowed to monitor paging through the second terminal device, and one indication manner is that if the second identifier enables the identifier of the first terminal device and the identifier of the second terminal device to satisfy any one or more of the seven relationships between the identifiers introduced above, or the second identifier enables the PO of the first terminal device and the PO of the second terminal device to satisfy any one or more of the three relationships between the POs introduced above, the second identifier indicates that the first terminal device is allowed to monitor paging through the second terminal device. This is also an implicit indication mode, which can reduce the amount of signaling and save signaling overhead.
If the first terminal device provides the relay service for the second terminal device, the first core network device may also send a second message to the first terminal device to indicate that the second terminal device is allowed to monitor paging through the first terminal device; alternatively, the first core network device may also not send the second message to the first terminal device, but indicate, in an implicit indication manner, that the second terminal device is allowed to listen to paging through the first terminal device, which is similar to the above implementation.
S208, the first terminal device sends a third message to the second terminal device, and the second terminal device receives the third message from the first terminal device accordingly. The third message may request listening for pages by the second terminal device.
Optionally, the third message may further include the current identifier of the first terminal device, or include the DRX cycle of the first terminal device, or include the current identifier of the first terminal device and the DRX cycle of the first terminal device. The current identifier of the first terminal device is, for example, the second identifier, or may be another identifier of the first terminal device.
If the second terminal device listens for a page for the first terminal device, or the second terminal device provides a relay service for the first terminal device, S208 may be performed.
S209, the second terminal device sends a fourth message to the first terminal device, and the first terminal device receives the fourth message from the second terminal device accordingly. The fourth message may indicate that the first terminal device listens for pages. If S208 is performed, S209 may be performed, and the fourth message may be regarded as a response message of the third message.
And then, the second terminal equipment monitors paging for the first terminal equipment. For example, the second terminal device may calculate the PO of the first terminal device and wake up to listen for pages for the first terminal device at the PO of the first terminal device. The way in which the second terminal device calculates the PO can refer to the formula described above.
For example, the DRX cycle of the first terminal device is referred to as a first DRX cycle, the DRX cycle of the second terminal device is referred to as a second DRX cycle, and the second terminal device may monitor paging for the first terminal device according to the third DRX cycle. Wherein the third DRX cycle may be the first DRX cycle if the first DRX cycle is less than or equal to the second DRX cycle; alternatively, the third DRX cycle may be the second DRX cycle if the first DRX cycle is greater than the second DRX cycle. That is, the second terminal device may monitor paging for the first terminal device at a smaller DRX cycle to reduce the probability of missing a page for the first terminal device.
It is considered that if the DRX cycle of the first terminal device is smaller than the DRX cycle of the second terminal device, the third DRX cycle may be the DRX cycle of the first terminal device, that is, the second terminal device needs to monitor with a smaller DRX cycle than the DRX cycle of the second terminal device in order to monitor paging for the first terminal device, which may increase the power consumption of the second terminal device to some extent. Therefore, as an optional implementation manner, the first DRX cycle and the second DRX cycle may be determined through negotiation, and the second DRX cycle is made to be less than or equal to the first DRX cycle as much as possible, so that the second terminal device may monitor according to the DRX cycle of the second terminal device, and may monitor not only the paging of the first terminal device but also the paging of the second terminal device, without bringing extra power consumption to the second terminal device.
For example, the process of negotiating the DRX cycle may be performed between core network devices. For example, the first core network device and the second core network device may determine the first DRX cycle and the second DRX cycle through negotiation. For example, the first core network device sends the first DRX cycle to the second core network device, so that the second core network device may determine the second DRX cycle, for example, the second DRX cycle is less than or equal to the first DRX cycle, and then the second core network device sends the second DRX cycle to the second terminal device.
Alternatively, the process of negotiating the DRX cycle may also be performed between the terminal device and the core network device. For example, the first terminal device sends a DRX cycle desired by the first terminal device to the first core network device, and the first core network device determines that the DRX cycle is the first DRX cycle. The first core network device sends the first DRX cycle to the second core network device, so that the second core network device can determine the second DRX cycle, for example, the second DRX cycle is less than or equal to the first DRX cycle, and then the second core network device sends the second DRX cycle to the second terminal device.
For another example, the second terminal device sends the DRX cycle desired by the second terminal device to the second core network device, and the second core network device determines the second DRX cycle according to the DRX cycle and other corresponding factors, where the second DRX cycle may be equal to or not equal to the DRX cycle desired by the second terminal device. The second core network device sends the second DRX cycle to the first core network device, so that the first core network device can determine the first DRX cycle, for example, the second DRX cycle is less than or equal to the first DRX cycle, and then the first core network device sends the first DRX cycle to the first terminal device.
For another example, the first terminal device sends a first DRX cycle to the second terminal device, where the first DRX cycle is the DRX cycle of the first terminal device. The second terminal device sends the first DRX cycle to the second core network device, so that the second terminal device and the second core network device determine the second DRX cycle by negotiation according to the first DRX cycle, for example, the second DRX cycle is less than or equal to the first DRX cycle.
The second terminal device monitors paging for the first terminal device, for example, the paging DCI for the first terminal device is monitored, or the paging DCI and the paging message are monitored for the first terminal device. For example, the second terminal device monitors the paging DCI in the PO of the first terminal device, if the paging DCI is monitored, the second terminal device determines the content included in the paging DCI, if the paging DCI includes the scheduling information of the paging message, the second terminal device continues to monitor the paging message, and after the paging message is monitored, if the second terminal device determines that the paging message includes the identifier of the first terminal device, it indicates that the first terminal device is paged, and the second terminal device may forward the paging message to the first terminal device. Or, if the paging message does not include the identifier of the first terminal device, it indicates that the first terminal device is not paged, the second terminal device may not forward the paging message to the first terminal device, and when the next PO of the first terminal device arrives, the second terminal device continues to monitor the paging DCI. Or, if the second terminal device determines that the paging DCI does not include the scheduling information of the paging message, the second terminal device may not monitor the paging message any more, but continue to monitor the paging DCI when the next PO of the first terminal device arrives.
Or, the second terminal device monitors paging for the first terminal device, for example, including monitoring paging DCI for the first terminal device. For example, the second terminal device monitors the paging DCI in the PO of the first terminal device, if the paging DCI is monitored, the first terminal device determines the content included in the paging DCI, if the paging DCI includes scheduling information of the paging message, the first terminal device continues to monitor the paging message, after the paging message is monitored, the second terminal device forwards the paging message to the first terminal device, and the first terminal device determines whether the first terminal device is paged, for example, if the first terminal device determines that the paging message includes an identifier of the first terminal device, it indicates that the first terminal device is paged, and the first terminal device may perform subsequent work according to the paging message, for example, may establish an RRC connection with a corresponding access network device to receive downlink data. Alternatively, if the paging message does not include the identity of the first terminal device, indicating that the first terminal device is not paged, the first terminal device may discard the paging message. When the next PO of the first terminal equipment arrives, the second terminal equipment continues to monitor the paging DCI.
For the first terminal device, the paging DCI or paging message is no longer received from the network, but rather the paging DCI or paging message is received from the second terminal device. Therefore, the first terminal equipment does not need to communicate with the network through an air interface, and power consumption of the first terminal equipment caused by air interface communication is saved.
Alternatively, if the first terminal device monitors paging for the second terminal device, S208 may be modified to send a third message to the first terminal device by the second terminal device, and correspondingly, the first terminal device receives the third message from the second terminal device. The third message may request listening for pages by the first terminal device. Accordingly, S209 may be modified to that the first terminal device sends the fourth message to the second terminal device, and accordingly, the second terminal device receives the fourth message from the first terminal device. The fourth message may indicate that the first terminal device listens for pages. The way in which the first terminal device monitors paging for the second terminal device is similar to the way in which the second terminal device monitors paging for the first terminal device, and is not described in detail.
In addition, if the first terminal device monitors paging for the second terminal device, there may be a process of negotiating the DRX cycle, and the specific negotiation process may refer to the above description, and only the above "first terminal device" and "second terminal device" need to be exchanged, and the "first core network device" and "second core network device" need to be exchanged.
Alternatively, S208 and S209 may not be executed, but S210 may be executed as follows, and S208 to S209 and S210 may be considered as two embodiments, and only one of them may be executed, so that S208 to S210 are optional steps, and are indicated by broken lines in fig. 2.
S210, the second core network device sends a fifth message to the second terminal device, and the second terminal device receives the fifth message from the second core network device. The fifth message may instruct the first terminal device to monitor paging through the second terminal device (or, instruct the second terminal device to monitor paging for the first terminal device), and if the second terminal device monitors paging for the first terminal device, S210 may be performed.
That is, if the second terminal device listens for paging for the first terminal device, the first terminal device may request the second terminal device to listen for paging (as in S208), or the second core network device may instruct the second terminal device to listen for paging for the first terminal device without the request of the first terminal device.
And then, the second terminal equipment monitors paging for the first terminal equipment. For example, the second terminal device may calculate the PO of the first terminal device and wake up to listen for pages for the first terminal device at the PO of the first terminal device. The way in which the second terminal device calculates the PO can refer to the formula described above.
For example, the DRX cycle of the first terminal device is referred to as a first DRX cycle, the DRX cycle of the second terminal device is referred to as a second DRX cycle, and the second terminal device may monitor paging for the first terminal device according to the third DRX cycle. Wherein the third DRX cycle may be the first DRX cycle if the first DRX cycle is less than or equal to the second DRX cycle; alternatively, the third DRX cycle may be the second DRX cycle if the first DRX cycle is greater than the second DRX cycle. That is, the second terminal device may monitor paging for the first terminal device at a smaller DRX cycle to reduce the probability of missing a page for the first terminal device. If the first DRX cycle and/or the second DRX cycle are determined by negotiation as described in S209, the second DRX cycle is less than or equal to the first DRX cycle, so that the second terminal device can monitor both paging of the second terminal device and paging of the second terminal device by only monitoring paging according to the DRX cycle of the second terminal device.
Optionally, the fifth message may further include the current identifier of the first terminal device, or include the first DRX cycle, or include the current identifier of the first terminal device and the first DRX cycle. The current identifier of the first terminal device is, for example, the second identifier, or may be another identifier of the first terminal device.
Or, if the first terminal device monitors paging for the second terminal device, S210 may be modified to send the fifth message to the first terminal device by the first core network device, and correspondingly, the first terminal device receives the fifth message from the first core network device. The fifth message may instruct the second terminal device to listen for pages via the first terminal device (or, instruct the first terminal device to listen for pages for the second terminal device). Optionally, the fifth message may further include the current identity of the second terminal device, or include the second DRX cycle, or include the current identity of the second terminal device and the second DRX cycle. The current identifier of the second terminal device is, for example, the third identifier, or may be another identifier of the second terminal device.
As an alternative implementation, a problem may also be considered, if one terminal device provides a relay service for multiple terminal devices, and the identities of the terminal devices are determined according to the method provided in this embodiment, then the POs calculated according to the identities of the terminal devices may all be the same, or the time domain distance is smaller, for the access network device, more pages may need to be sent in a shorter time, which may cause a phenomenon that resources for sending pages collide. In the embodiment of the present application, the problem of resource conflict can be solved in a corresponding manner.
For example, if a first terminal device listens for a page via a second terminal device, the identity of the first terminal device contained in the paging message may be the identity of the first terminal device under the second terminal device (otherwise referred to as a local identity) if the network is to page the first terminal device. For example, the first terminal device a monitors paging through the second terminal device, the first terminal device B also monitors paging through the second terminal device, the identifier of the first terminal device a is 1, and the identifier of the first terminal device B is 2. If the network pages the first terminal device and the second terminal device, the network may include the identifier of the second terminal device in the paging message and include the identifier of the first terminal device under the second terminal device, for example, if the network pages the second terminal device and the first terminal device a, the network may include the identifier of the second terminal device in the paging message and include the identifier 1 of the first terminal device a. Because the bits required by the local identifier are less than the bits required by the identifier of the terminal device contained in the paging message in the prior art, the size of the paging message can be reduced, so as to reduce the paging resource occupied by the paging message.
Alternatively, the time domain distances between the POs of different terminal devices may be increased, and the POs of a plurality of remote terminal devices are uniformly distributed at time domain positions that are distant from the PO of the relay terminal device by the time domain distances.
Alternatively, the network may page the terminal device again at the next PO of the terminal device, thereby avoiding paging too many terminal devices within one PO.
In this embodiment of the present application, the identifiers of the two terminal devices may be set, so that the POs determined according to the identifiers of the two terminal devices are the same, for example, the first terminal device is a remote terminal device, and the second terminal device is a relay terminal device, and the second terminal device can monitor the paging of the first terminal device and the paging of the second terminal device on the same PO, and does not need to wake up in more time to monitor the paging, which is beneficial to reducing the power consumption of the second terminal device; or, the POs determined according to the identifiers of the two terminal devices may be close in the time domain, and the second terminal device may monitor the paging of the first terminal device and the paging of the second terminal device in a close time, for example, after monitoring the paging of one terminal device, the second terminal device may not enter the sleep state, but enter the sleep state after the paging of the other terminal device is monitored, and since the POs of the two terminal devices are close in the time domain, the power consumption caused by the waiting of the second terminal device may be smaller than the power consumption caused by waking up after the sleep; or, the POs determined according to the identifiers of the two terminal devices may partially overlap or completely overlap in the time domain, and in the time domain range where the POs overlaps, the second terminal device may monitor the paging of the first terminal device and also the paging of the second terminal device.
In order to solve the same technical problem, the present embodiment provides a second communication method, please refer to fig. 3, which is a flowchart of the method. In the following description, the method is applied to the network architecture shown in fig. 1C or fig. 1D as an example.
For ease of description, in the following, the method is performed by a network device and a terminal device as an example. The first core network device described below is a core network device serving a first terminal device, and the second core network device is a core network device serving a second terminal device. The first core network device and the second core network device may be the same core network device, or may be different core network devices.
If the embodiment of the present application is applied to the network architecture shown in fig. 1C, the first terminal device described below may be a terminal device 1 (i.e., a relay terminal device) in the network architecture shown in fig. 1C, the second terminal device described below may be a terminal device 2 (i.e., a remote terminal device) in the network architecture shown in fig. 1C, the first core network device described below may be a core network device in the network architecture shown in fig. 1C, and the second core network device described below may also be a core network device in the network architecture shown in fig. 1C; alternatively, the first terminal device described below may be the terminal device 2 in the network architecture shown in fig. 1C, the second terminal device described below may be the terminal device 1 in the network architecture shown in fig. 1C, the first core network device described below may be the core network device in the network architecture shown in fig. 1C, and the second core network device described below may also be the core network device in the network architecture shown in fig. 1C. It can be seen that, in this scenario, the first core network device and the second core network device are the same core network device. If the embodiment of the present application is applied to such a scenario, the information interaction procedure between two core network devices described below need not be performed.
Alternatively, if the embodiment of the present application is applied to the network architecture shown in fig. 1D, the first terminal device described below may be the terminal device 1 (i.e., a relay terminal device) in the network architecture shown in fig. 1D, the second terminal device described below may be the terminal device 2 (i.e., a remote terminal device) in the network architecture shown in fig. 1D, the first core network device described below may be the core network device 1 in the network architecture shown in fig. 1D, and the second core network device described below may also be the core network device 2 in the network architecture shown in fig. 1D; alternatively, the first terminal device described below may be the terminal device 2 in the network architecture shown in fig. 1D, the second terminal device described below may be the terminal device 1 in the network architecture shown in fig. 1D, the first core network device described below may be the core network device 2 in the network architecture shown in fig. 1D, and the second core network device described below may also be the core network device 1 in the network architecture shown in fig. 1D. It can be seen that in this scenario, the first core network device and the second core network device are different core network devices.
S301, the second terminal device sends the first message to the second core network device, and the second core network device receives the first message from the second terminal device. The first message may request listening for pages for the first terminal device, or the first message may be used to request allocation of a new identity for the first terminal device.
For example, the first message may comprise an identification of the first terminal device, or an identification of the second terminal device, or an identification of the first terminal device and an identification of the second terminal device. If the first message includes the identity of the second terminal device and not the identity of the first terminal device, it may be that the second core network device already knows the relay relationship between the first terminal device and the second terminal device, e.g. the second terminal device is a relay terminal device and the first terminal device is a remote terminal device. The second core network device can determine, through querying, the first terminal device having a relay relationship with the second terminal device, thereby determining that the second terminal device requests to monitor paging for the first terminal device.
For example, the identity of the first terminal device may be SUCI, SUPI, IMSI, 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N) of the first terminal devices) Any one of them. The identity of the second terminal device may be SUCI, SUPI, IMSI, 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N) of the second terminal devices) Any one of them.
S302, the second core network device sends a sixth message to the first core network device, and correspondingly, the first core network device receives the sixth message from the second core network device. The sixth message may comprise an identification of the first terminal device, or an identification of the second terminal device, or an identification of the first terminal device and an identification of the second terminal device. The sixth message may be used to request allocation of a new identity for the first terminal device. S302 may be performed if the first core network device and the second core network device are different core network devices, whereas S302 may not be performed if the first core network device and the second core network device are the same core network device.
Optionally, the sixth message may also request to establish an association relationship between the first terminal device and the second terminal device. For example, the sixth message may include first indication information, the first indication information may be used to request establishment of an association relationship for the first terminal device and the second terminal device, and the first indication information may occupy one or more bits. Or, the sixth message does not need to include additional indication information, because the sixth message requests to allocate a new identifier to the first terminal device, it may also be considered that the default request establishes an association relationship between the first terminal device and the second terminal device. With regard to the association relationship between the first terminal device and the second terminal device, reference may be made to the related description of S204 in the embodiment shown in fig. 2.
S303, the first core network device determines a new identifier of the first terminal device, for example, the new identifier is a second identifier.
For example, if the sixth message includes the identifier of the second terminal device, the first core network device may determine a new identifier of the first terminal device according to the identifier of the second terminal device; or, the sixth message includes an identifier of the first terminal device, for example, the first core network device knows the relay relationship between the first terminal device and the second terminal device, for example, the second terminal device is a relay terminal device, and the first terminal device is a remote terminal device. The first core network device can determine, through querying, the second terminal device having a relay relationship with the first terminal device, so as to determine the new identifier of the first terminal device according to the identifier of the second terminal device. As to the manner in which the first core network device assigns a new identifier to the first terminal device, reference may be made to the related description for S203 in the embodiment shown in fig. 2.
S304, the first core network device sends the second identifier to the first terminal device, and accordingly, the first terminal device receives the second identifier from the first core network device.
The first core network device allocates the second identifier to the first terminal device, and then may send the second identifier to the first terminal device, so that the first terminal device can use the second identifier.
In addition, if the sixth message is further used to request to establish an association relationship between the first terminal device and the second terminal device, the first core network device may also establish an association relationship between the first terminal device and the second terminal device. After receiving the sixth message, the first core network device may determine whether to accept establishment of an association relationship between the first terminal device and the second terminal device, or determine whether to accept monitoring paging by the first terminal device through the second terminal device (or monitoring paging by the second terminal device through the first terminal device), according to a corresponding policy of the first core network device. If the first core network device is acceptable, the first core network device may establish an association relationship for the first terminal device and the second terminal device, and if the first core network device is not acceptable, the first core network device may not establish an association relationship for the first terminal device and the second terminal device. The first core network device may further send a seventh message to the second core network device, and correspondingly, the second core network device receives the seventh message from the first core network device. If the first core network device accepts to establish the association relationship between the first terminal device and the second terminal device, the seventh message may indicate that the first core network device accepts to establish the association relationship between the first terminal device and the second terminal device, or indicate that the first core network device establishes the association relationship between the first terminal device and the second terminal device; or, if the first core network device does not accept to establish the association relationship between the first terminal device and the second terminal device, the seventh message may indicate that the first core network device does not accept to establish the association relationship between the first terminal device and the second terminal device, or indicate that the first core network device does not establish the association relationship between the first terminal device and the second terminal device.
After executing S304, optionally, S208 to S210 in the embodiment shown in fig. 2 may also be executed, which is not described herein and is not shown in fig. 3.
In this embodiment of the application, by setting the identifier of one of the terminal devices, the POs determined according to the identifiers of the two terminal devices is the same, for example, the first terminal device is a remote terminal device, and the second terminal device is a relay terminal device, so that the second terminal device can monitor the paging of the first terminal device and the paging of the second terminal device on the same PO, and does not need to wake up in more time to monitor the paging, which is beneficial to reducing the power consumption of the second terminal device; or, the POs determined according to the identifiers of the two terminal devices may be close in the time domain, and the second terminal device may monitor the paging of the first terminal device and the paging of the second terminal device in a close time, for example, after monitoring the paging of one terminal device, the second terminal device may not enter the sleep state, but enter the sleep state after the paging of the other terminal device is monitored, and since the POs of the two terminal devices are close in the time domain, the power consumption caused by the waiting of the second terminal device may be smaller than the power consumption caused by waking up after the sleep; or, the POs determined according to the identifiers of the two terminal devices may partially overlap or completely overlap in the time domain, and in the time domain range where the POs overlaps, the second terminal device may monitor the paging of the first terminal device and also the paging of the second terminal device.
In the embodiment shown in fig. 2 or the embodiment shown in fig. 3, it is described how to keep the identities of the two terminal devices consistent if the first core network device and the first core network device are the same core network device. However, if the first core network device and the second core network device are not the same core network device, it is also necessary to keep the identifiers of the two terminal devices consistent, so that the identifiers of the two terminal devices can continuously satisfy one or more of the seven relationships between the identifiers described in the embodiment shown in fig. 2, or the POs of the two terminal devices can continuously satisfy one or more of the three relationships between the POs described in the embodiment shown in fig. 2. Therefore, the embodiments of the present application provide a third communication method, by which even if a first core network device and a second core network device are not the same core network device, the identifiers of two terminal devices can be kept consistent. Please refer to fig. 4, which is a flowchart of the method. In the following description, the method is applied to the network architecture shown in fig. 1D as an example. The embodiment shown in fig. 4 may be applied in combination with the embodiment shown in fig. 2 (or the embodiment shown in fig. 3), for example, after the embodiment shown in fig. 2 (or the embodiment shown in fig. 3) is executed, if the identifier of one of the terminal devices changes and the two core network devices are different core network devices, the embodiment shown in fig. 4 may be executed; alternatively, the embodiment shown in fig. 4 and the embodiment shown in fig. 2 (or the embodiment shown in fig. 3) may not be combined, but may be separately applied.
For ease of description, in the following, the method is performed by a network device and a terminal device as an example. The first core network device described below is a core network device serving a first terminal device, and the second core network device is a core network device serving a second terminal device. The first core network device and the second core network device may be the same core network device, or may be different core network devices. If the embodiment of the present application is applied to the network architecture shown in fig. 1D, the first terminal device described below may be a terminal device 1 (i.e., a relay terminal device) in the network architecture shown in fig. 1D, the second terminal device described below may be a terminal device 2 (i.e., a remote terminal device) in the network architecture shown in fig. 1D, the first core network device described below may be a core network device 1 in the network architecture shown in fig. 1D, and the second core network device described below may also be a core network device 2 in the network architecture shown in fig. 1D; alternatively, the first terminal device described below may be the terminal device 2 in the network architecture shown in fig. 1D, the second terminal device described below may be the terminal device 1 in the network architecture shown in fig. 1D, the first core network device described below may be the core network device 2 in the network architecture shown in fig. 1D, and the second core network device described below may also be the core network device 1 in the network architecture shown in fig. 1D. It can be seen that in this scenario, the first core network device and the second core network device are different core network devices.
S401, the first core network device sends an eighth message to the second core network device, and the second core network device receives the eighth message from the first core network device accordingly. The eighth message may indicate that a new identifier is allocated to the second terminal device, or indicate that the identifier of the first terminal device changes, or indicate that a new identifier is allocated to the first terminal device. For example, the eighth message comprises the current identity of the first terminal device, or comprises the current identity of the second terminal device. The current identity of the first terminal device is for example any of the first terminal device' S SUCI, SUPI, 5G-GUTI, 5G-S-TMSI, or 5G-TMSI. The current identity of the second terminal device is for example any of SUCI, SUPI, 5G-GUTI, 5G-S-TMSI, or 5G-TMSI of the second terminal device.
If the first core network device needs to allocate a new identifier to the first terminal device, or if the first core network device allocates a new identifier to the first terminal device, the UE _ ID of the first terminal device may change, or if the first core network device allocates a new identifier to the first terminal device, the UE _ ID mod N of the first terminal device may change, or if the first core network device allocates a new identifier to the first terminal device, the UE _ ID mod (N × N) of the first terminal device may change s) The UE _ ID of the first terminal device changes due to the first core network device allocating a new identifier to the first terminal device, and the time-domain distance between the PO corresponding to the changed identifier of the first terminal device and the PO of the second terminal device is greater than a first threshold, or the UE _ ID of the first terminal device changes due to the first core network device allocating a new identifier to the first terminal device, and the difference between the UE _ ID of the first terminal device and the UE _ ID of the second terminal device after the change exceeds a second threshold, or the UE _ ID mod N of the first terminal device changes due to the first core network device allocating a new identifier to the first terminal device, and the difference between the UE _ ID mod N of the first terminal device after the change and the UE _ ID mod N of the second terminal device exceeds a third threshold, or the first core network device assigning a new identity to the first terminal device may result in a UE _ ID mod (N × N) of the first terminal devices) The change occurs and the changed UE _ ID mod (N × N) of the first terminal devices) UE _ ID mod (N × N) with the second terminal devices) The difference between them exceeds the fourthThe threshold, or the assignment of a new identifier to the first terminal device by the first core network device may cause a change in floor (UE _ ID/N) mod Ns of the first terminal device, and a difference between the changed floor (UE _ ID/N) mod Ns of the first terminal device and the floor (UE _ ID/N) mod Ns of the second terminal device exceeds a fifth threshold, and the first core network device and the second core network device are different core network devices, S401 may be executed.
The second identity is the current identity of the first terminal device, for example, if the embodiment shown in fig. 2 is combined with the embodiment shown in fig. 4, the second identity may be the second identity described in the embodiment described in fig. 2. In addition, if the embodiment shown in fig. 2 is combined with the embodiment shown in fig. 4, the current identifier of the second terminal device is, for example, the third identifier described in the embodiment shown in fig. 2, or may be the ninth identifier described in the embodiment shown in fig. 2, or may be the first identifier (the first identifier is the identifier of the second terminal device) described in the embodiment shown in fig. 2, or may be another identifier of the second terminal device.
S402, the second core network device distributes a new identifier for the second terminal device. For example, the new identifier allocated by the second core network device to the second terminal device is referred to as a fifth identifier. Here, the fifth identifier may be the same identifier as the fifth identifier described in the embodiment shown in fig. 2, or may be a different identifier. For example, the fifth identity may be a 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N × N) of the second terminal devices) Any one of them.
The second core network device may directly assign a new identifier to the second terminal device, for example, the second core network device may determine which identifiers are not assigned, and may select one identifier from the identifiers to be assigned to the second terminal device. The new identifier allocated by the second core network device to the second terminal device may be an identifier different from the original identifier of the second terminal device. For example, the time domain distance between the PO corresponding to the fifth identifier and the PO corresponding to the original identifier of the second terminal device is greater than the first threshold; or the UE _ ID corresponding to the fifth identifier is originally associated with the second terminal deviceIdentifying that a difference (or, interval) between corresponding UE _ IDs is less than or equal to a second threshold; or, a difference (or, interval) between (UE _ ID mod N) corresponding to the fifth identifier and (UE _ ID mod N) corresponding to the original identifier of the second terminal device is less than or equal to a third threshold; alternatively, the fifth identity corresponds to (UE _ ID mod (N × N)s) (UE _ ID mod (N × N)) corresponding to the original identity of the second terminal devices) A difference (or, interval) between) is less than or equal to a fourth threshold; alternatively, (floor (UE _ ID/N) mod N corresponding to the fifth identitys) (floor (UE _ ID/N) mod N corresponding to the original identity of the second terminal device s) The difference (or interval) therebetween is less than or equal to the fifth threshold.
S403, the second core network device sends the fifth identifier to the first core network device, and correspondingly, the first core network device receives the fifth identifier from the second core network device.
After the second core network device allocates the fifth identifier to the second terminal device, the second core network device may send the fifth identifier to the first core network device, so that the first core network device may determine a new identifier of the first terminal device according to the fifth identifier.
If the first core network device is able to assign a new identifier to the first terminal device according to the fifth identifier, S404 is executed, otherwise, if the first core network device is not able to assign a new identifier to the first terminal device according to the fifth identifier, S405 is executed.
And S404, the first core network device allocates a new identifier to the first terminal device according to the fifth identifier. For example, the new identifier assigned by the first core network device to the first terminal device is referred to as a sixth identifier. After the execution of S404, S409 may be executed.
If the first core network device can allocate a new identifier to the first terminal device according to the fifth identifier, the first core network device may allocate a sixth identifier to the first terminal device, and reference may be made to the related description of the embodiment shown in fig. 2 regarding the allocation manner, so as to enable the POs of the two terminal devices to satisfy one or more of the three relationships between the POs described in the embodiment shown in fig. 2, or enable the identifiers of the two terminal devices to satisfy one or more of the seven relationships between the identifiers described in the embodiment shown in fig. 2.
S405, the first core network device sends a ninth message to the second core network device, and the second core network device receives the ninth message from the first core network device accordingly. The ninth message may indicate that the second terminal device is assigned with a new identifier, or indicate that the first core network device cannot assign a new identifier to the first terminal device. For example, the ninth message may comprise the current identity of the first terminal device, or comprise the current identity of the second terminal device. The current identity of the first terminal device is for example any of the first terminal device' S SUCI, SUPI, 5G-GUTI, 5G-S-TMSI, or 5G-TMSI. The current identity of the second terminal device is for example any of SUCI, SUPI, 5G-GUTI, 5G-S-TMSI, or 5G-TMSI of the second terminal device.
When allocating an identifier to a terminal device, a core network device selects one of available identifiers to allocate to the terminal device, where the available identifier is an identifier that is valid and has not been allocated to other terminal devices. The first core network device allocates a new identifier to the first terminal device according to the fifth identifier, and the allocation result needs to make the POs of the two terminal devices satisfy one or more of the three relationships described in the embodiment shown in fig. 2. If none of these identities, which are able to fulfill the allocation requirements, is available, e.g. an invalid identity, or an identity already allocated to other terminal devices, the first core network device cannot allocate a new identity to the first terminal device. In this case, the first core network device may instruct the second core network device to assign a new identifier to the second terminal device. If the second core network device allocates a new identifier to the second terminal device, and the new identifier is not the fifth identifier, then, for the new identifier, an identifier that can meet the allocation requirement of the first core network device may change, and possibly, the available identifiers of the first core network device may include identifiers that can meet the allocation requirement, and at this time, the first core network device may select a corresponding identifier from the available identifiers to allocate to the first terminal device.
And S406, the second core network device allocates a new identifier for the second terminal device. For example, the new identifier allocated by the second core network device to the second terminal device is referred to as a seventh identifier. The seventh identifier and the fifth identifier may be different identifiers. Regarding the implementation manner of the seventh identifier, reference may be made to the description of the first identifier, the second identifier, or the like in the embodiment shown in fig. 2.
The second core network device may then assign a new identifier to the second terminal device, for example, the second core network device may determine which identifiers are not assigned, and may select one of the identifiers to be assigned to the second terminal device.
S407, the second core network device sends the seventh identifier to the first core network device, and correspondingly, the first core network device receives the seventh identifier from the second core network device.
After the second core network device allocates the seventh identifier to the second terminal device, the seventh identifier may be sent to the first core network device, so that the first core network device may determine a new identifier of the first terminal device according to the seventh identifier.
If the first core network device can allocate a new identifier to the first terminal device according to the seventh identifier, S408 is executed, otherwise, if the first core network device cannot allocate a new identifier to the first terminal device according to the seventh identifier, S405 may be executed again, and so on until the first core network device allocates a new identifier to the first terminal device.
And S408, the first core network device allocates a new identifier to the first terminal device according to the seventh identifier. For example, the new identifier assigned by the first core network device to the first terminal device is referred to as the eighth identifier.
If the first core network device can allocate a new identifier to the first terminal device according to the seventh identifier, the first core network device may allocate an eighth identifier to the first terminal device, and as for the allocation manner, reference may be made to the related description of the embodiment shown in fig. 2, so as to enable POs of two terminal devices to satisfy one or more of the three relationships described in the embodiment shown in fig. 2.
S409, the first core network device sends the new identifier of the first terminal device to the first terminal device, and correspondingly, the first terminal device receives the new identifier of the first terminal device from the first core network device.
For example, if S408 is performed instead of S404, the first core network device sends the eighth identifier to the first terminal device, and accordingly, the first terminal device receives the eighth identifier from the first core network device. Or, if S408 is not executed but S404 is executed, the first core network device sends the sixth identifier to the first terminal device, and accordingly, the first terminal device receives the sixth identifier from the first core network device.
After allocating a new identifier to the first terminal device, the first core network device may send the new identifier to the first terminal device, so that the first terminal device can use the new identifier.
S410, the second core network device sends the new identifier of the second terminal device to the second terminal device, and correspondingly, the second terminal device receives the new identifier of the second terminal device from the second core network device.
For example, if S405 to S408 are not executed, the second core network device sends the fifth identifier to the second terminal device, and accordingly, the second terminal device receives the fifth identifier from the second core network device. Or, if S405 to S408 are executed, the second core network device sends the seventh identifier to the second terminal device, and accordingly, the second terminal device receives the seventh identifier from the second core network device.
After the second core network device allocates a new identifier to the second terminal device, the second core network device may send the new identifier to the second terminal device, so that the second terminal device can use the new identifier.
Wherein S409 may occur before S410, or S409 may occur after S410, or S409 and S410 may occur simultaneously.
In the embodiment of the present application, if the identifier of one terminal device changes, the identifier of another terminal device can also change synchronously, so that the paging occasion of the first terminal device is the same as the paging occasion of the second terminal device, or the time domain distance between the paging occasion of the first terminal device and the paging occasion of the second terminal device is smaller than or equal to the first threshold, or the paging occasion of the first terminal device and the paging occasion of the second terminal device partially overlap or completely overlap in the time domain, so as to reduce the power consumption of the terminal device.
If the first core network device and the second core network device are not the same core network device, it is also necessary to implement synchronous change of the identifiers of the two terminal devices, so that the identifiers of the two terminal devices can continuously satisfy one or more of the three relationships described in the embodiment shown in fig. 2. While the embodiment shown in fig. 4 introduces a method capable of achieving the object, the following embodiment of the present application provides a fourth communication method, which can also be implemented to implement synchronous change of identifiers of two terminal devices even if the first core network device and the second core network device are not the same core network device. Please refer to fig. 5, which is a flowchart of the method. In the following description, the method is applied to the network architecture shown in fig. 1D as an example. The embodiment shown in fig. 5 may be applied in combination with the embodiment shown in fig. 2 (or the embodiment shown in fig. 3), for example, after the embodiment shown in fig. 2 (or the embodiment shown in fig. 3) is executed, if the identifier of one of the terminal devices changes and the two core network devices are different core network devices, the embodiment shown in fig. 5 may be executed; alternatively, the embodiment shown in fig. 5 and the embodiment shown in fig. 2 (or the embodiment shown in fig. 3) may not be combined, but may be separately applied.
For ease of description, in the following, the method is performed by a network device and a terminal device as an example. The first core network device described below is a core network device serving a first terminal device, and the second core network device is a core network device serving a second terminal device. The first core network device and the second core network device may be the same core network device, or may be different core network devices. If the embodiment of the present application is applied to the network architecture shown in fig. 1D, the first terminal device described below may be a terminal device 1 (i.e., a relay terminal device) in the network architecture shown in fig. 1D, the second terminal device described below may be a terminal device 2 (i.e., a remote terminal device) in the network architecture shown in fig. 1D, the first core network device described below may be a core network device 1 in the network architecture shown in fig. 1D, and the second core network device described below may also be a core network device 2 in the network architecture shown in fig. 1D; alternatively, the first terminal device described below may be the terminal device 2 in the network architecture shown in fig. 1D, the second terminal device described below may be the terminal device 1 in the network architecture shown in fig. 1D, the first core network device described below may be the core network device 2 in the network architecture shown in fig. 1D, and the second core network device described below may also be the core network device 1 in the network architecture shown in fig. 1D. It can be seen that in this scenario, the first core network device and the second core network device are different core network devices.
S501, the first core network device sends an eighth message to the second core network device, and the second core network device receives the eighth message from the first core network device. The eighth message may indicate that a new identifier is allocated to the second terminal device, or indicate that the identifier of the first terminal device changes, or indicate that a new identifier is allocated to the first terminal device. For example, the eighth message comprises the current identity of the first terminal device, or comprises the current identity of the second terminal device. The current identity of the first terminal device is for example any of the first terminal device' S SUCI, SUPI, 5G-GUTI, 5G-S-TMSI, or 5G-TMSI. The current identity of the second terminal device is for example any of SUCI, SUPI, 5G-GUTI, 5G-S-TMSI, or 5G-TMSI of the second terminal device.
If the first core network device needs to allocate a new identifier to the first terminal device, or if the first core network device allocates a new identifier to the first terminal device, the UE _ ID of the first terminal device may change, or if the first core network device is the first core network deviceThe terminal device assigning a new identity may result in a change in UE _ ID mod N of the first terminal device, or the first core network device assigning a new identity to the first terminal device may result in UE _ ID mod (N × N) of the first terminal device s) The UE _ ID of the first terminal device changes due to the first core network device allocating a new identifier to the first terminal device, and the time-domain distance between the PO corresponding to the changed identifier of the first terminal device and the PO of the second terminal device is greater than a first threshold, or the UE _ ID of the first terminal device changes due to the first core network device allocating a new identifier to the first terminal device, and the difference between the UE _ ID of the first terminal device and the UE _ ID of the second terminal device after the change exceeds a second threshold, or the UE _ ID mod N of the first terminal device changes due to the first core network device allocating a new identifier to the first terminal device, and the difference between the UE _ ID mod N of the first terminal device after the change and the UE _ ID mod N of the second terminal device exceeds a third threshold, or the first core network device assigning a new identity to the first terminal device may result in a UE _ ID mod (N × N) of the first terminal devices) The change occurs and the changed UE _ ID mod (N × N) of the first terminal devices) UE _ ID mod (N × N) with the second terminal devices) If the difference between the first core network device and the second core network device exceeds the fourth threshold, or if the first core network device assigns a new identifier to the first terminal device, which may cause a change in floor (UE _ ID/N) mod Ns of the first terminal device, and the difference between the changed floor (UE _ ID/N) mod Ns of the first terminal device and floor (UE _ ID/N) mod Ns of the second terminal device exceeds the fifth threshold, and the first core network device and the second core network device are different core network devices, S501 may be executed. With regard to the introduction of the second identifier or the current identifier of the second terminal device, reference may be made to the relevant contents of S401 in the embodiment described with reference to fig. 4.
The eighth message may further include a first candidate identifier, where the first candidate identifier is an identifier to be allocated to the first terminal device by the first core network device, that is, the first core network device intends to allocate the first candidate identifier to the first terminal device, but has not been allocated formally. Regarding the implementation of the first candidate identifier, reference may be made to the description of the implementation of the first identifier or the second identifier in the embodiment shown in fig. 2.
If the second core network device can allocate a new identifier to the second terminal device according to the first candidate identifier, executing S502-S504, otherwise, if the first core network device cannot allocate a new identifier to the second terminal device according to the first candidate identifier, executing S505.
And S502, the second core network equipment allocates a new identifier for the second terminal equipment. For example, the new identifier allocated by the second core network device to the second terminal device is referred to as a fifth identifier. Here, the fifth identifier may be the same identifier as the fifth identifier described in the embodiment shown in fig. 2, or may be a different identifier. For example, the fifth identity may be a 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N × N) of the second terminal device s) Any one of them.
If the fifth message includes the first candidate identifier, the second core network device may allocate a new identifier to the second terminal device according to the first candidate identifier, and the allocation manner may refer to the related description of the embodiment shown in fig. 2. The new identifier allocated by the second core network device to the second terminal device may be an identifier different from the original identifier of the second terminal device. For example, the time domain distance between the PO corresponding to the fifth identifier and the PO corresponding to the original identifier of the second terminal device is greater than the first threshold; or, a difference (or, interval) between the UE _ ID corresponding to the fifth identifier and the UE _ ID corresponding to the original identifier of the second terminal device is less than or equal to a second threshold; or, a difference (or, interval) between (UE _ ID mod N) corresponding to the fifth identifier and (UE _ ID mod N) corresponding to the original identifier of the second terminal device is less than or equal to a third threshold; alternatively, the fifth identity corresponds to (UE _ ID mod (N × N)s) (UE _ ID mod (N × N)) corresponding to the original identity of the second terminal devices) A difference (or, interval) between) is less than or equal to a fourth threshold; alternatively, (floor (UE _ ID/N) mod N corresponding to the fifth identitys) (floor (UE _ ID/N) mod N corresponding to the original identity of the second terminal device s) The difference (or interval) therebetween is less than or equal to the fifth threshold. In summary, the invention is not limited to the embodiments described aboveThe aim is to make the POs of two terminal devices meet one or more of the three relations between POs described in the embodiment shown in fig. 2, or to make the identities of two terminal devices meet one or more of the seven relations between identities described in the embodiment shown in fig. 2.
S503, the second core network device sends the fifth identifier to the first core network device, and correspondingly, the first core network device receives the fifth identifier from the second core network device.
After the second core network device allocates the fifth identifier to the second terminal device, the second core network device may send the fifth identifier to the first core network device, so that the first core network device may determine a new identifier of the first terminal device according to the fifth identifier.
S504, the first core network device allocates a first candidate identifier to the first terminal device, or the first core network device determines that a new identifier of the first terminal device is the first candidate identifier. After executing S504, S508 is executed.
Because the first core network device sends the first candidate identifier to the second core network device, and the second core network device also sends the fifth identifier to the first core network device, the first core network device may consider that the fifth identifier is allocated according to the first candidate identifier, and then the first core network device does not need to select other identifiers for the first terminal device any more, but allocates the first candidate identifier to the first terminal device.
S505, the second core network device sends a ninth message to the first core network device, and correspondingly, the first core network device receives the ninth message from the second core network device. The ninth message may indicate that the first terminal device is assigned with a new identifier, or indicate that the second core network device cannot assign a new identifier to the second terminal device. For example, the ninth message may comprise the current identity of the first terminal device, or comprise the current identity of the second terminal device. The current identity of the first terminal device is for example any of the first terminal device' S SUCI, SUPI, 5G-GUTI, 5G-S-TMSI, or 5G-TMSI. The current identity of the second terminal device is for example any of SUCI, SUPI, 5G-GUTI, 5G-S-TMSI, or 5G-TMSI of the second terminal device.
When allocating an identifier to a terminal device, a core network device selects one of available identifiers to allocate to the terminal device, where the available identifier is an identifier that is valid and has not been allocated to other terminal devices. The second core network device allocates a new identifier to the second terminal device according to the first candidate identifier, and the allocation result needs to make the POs of the two terminal devices satisfy one or more of the three relationships between the POs described in the embodiment shown in fig. 2, or needs to make the identifiers of the two terminal devices satisfy one or more of the seven relationships between the identifiers described in the embodiment shown in fig. 2. If none of these identities, which are able to fulfill the allocation requirements, is available, e.g. an invalid identity, or an identity already allocated to another terminal device, the second core network device cannot allocate a new identity to the second terminal device. In this case, the second core network device may instruct the first core network device to assign a new identifier to the first terminal device. If the first core network device intends to assign a new identifier to the first terminal device, and the new identifier is not the first candidate identifier, then, for the new identifier, the identifier capable of meeting the assignment requirement of the second core network device may change, and the available identifiers of the second core network device may include identifiers capable of meeting the assignment requirement, and at this time, the second core network device may select a corresponding identifier from the available identifiers to assign to the second terminal device.
As an optional implementation manner, the ninth message may further include a second candidate identifier, where the second candidate identifier is an identifier to be allocated to the second terminal device by the second core network device, that is, the second core network device intends to allocate the second candidate identifier to the second terminal device, but has not been allocated formally. That is to say, the second core network device cannot allocate a new identifier to the second terminal device according to the first candidate identifier suggested by the first core network device, and then the second core network device may select a second candidate identifier to be allocated for the second terminal device and send the second candidate identifier to the first core network device, so that the first core network device may also allocate a new identifier to the first terminal device according to the second candidate identifier, thereby avoiding the second core network device from occurring any more and being unable to allocate a new identifier to the second terminal device. Regarding the implementation of the second candidate identifier, reference may be made to the description of the first identifier or the second identifier and other implementations in the embodiment shown in fig. 2.
If the ninth message does not include the second candidate identification, S506 may be performed; or, if the ninth message includes the second candidate identifier and the first core network device is able to allocate a new identifier to the first terminal device according to the second candidate identifier, S506 is executed, otherwise, if the ninth message includes the second candidate identifier and the first core network device is not able to allocate a new identifier to the first terminal device according to the second candidate identifier, S501 may be executed again, and so on.
S506, the first core network device allocates a new identifier to the first terminal device. For example, the new identifier assigned by the first core network device to the second terminal device is referred to as an eighth identifier. The eighth identity may be a different identity from the first candidate identity. For example, the eighth identity may be a 5G-GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N × N) of the first terminal devices) Any one of them.
If the ninth message does not include the second candidate identifier, the first core network device may directly assign a new identifier to the first terminal device, for example, the first core network device may determine which identifiers have not been assigned, and may select one of the identifiers to be assigned to the first terminal device. Or, if the ninth message includes the second candidate identifier, the first core network device may allocate a new identifier to the first terminal device according to the second candidate identifier, and the allocation manner may refer to the related description of the embodiment shown in fig. 2, so as to enable the POs of the two terminal devices to satisfy one or more of the three relationships between the POs described in the embodiment shown in fig. 2, or enable the identifiers of the two terminal devices to satisfy one or more of the seven relationships between the identifiers described in the embodiment shown in fig. 2.
S507, the first core network device sends the new identifier of the first terminal device to the first terminal device, and correspondingly, the first terminal device receives the new identifier of the first terminal device from the first core network device.
For example, if S505 to S506 are not executed, but S504 is executed, the first core network device sends the first candidate identifier to the first terminal device, and accordingly, the first terminal device receives the first candidate identifier from the first core network device. Or, if S505 to S506 are executed instead of S504, the first core network device sends the eighth identifier to the first terminal device, and accordingly, the first terminal device receives the eighth identifier from the first core network device.
After allocating a new identifier to the first terminal device, the first core network device may send the new identifier to the first terminal device, so that the first terminal device can use the new identifier.
S508, the second core network device sends the new identifier of the second terminal device to the second terminal device, and correspondingly, the second terminal device receives the new identifier of the second terminal device from the second core network device.
For example, the second core network device sends the fifth identifier to the second terminal device, and accordingly, the second terminal device receives the fifth identifier from the second core network device.
After the second core network device allocates a new identifier to the second terminal device, the second core network device may send the new identifier to the second terminal device, so that the second terminal device can use the new identifier.
Wherein S507 may occur before S508, or S507 may occur after S508, or S507 and S508 may occur simultaneously.
In the embodiment of the present application, if the identifier of one terminal device changes, the identifier of another terminal device can also change synchronously, so that the paging occasion of the first terminal device is the same as the paging occasion of the second terminal device, or the time domain distance between the paging occasion of the first terminal device and the paging occasion of the second terminal device is smaller than or equal to the first threshold, or the paging occasion of the first terminal device and the paging occasion of the second terminal device partially overlap or completely overlap in the time domain, so as to reduce the power consumption of the terminal device.
In this embodiment, the core network device may support the first terminal device to monitor paging for the second terminal device (or support the second terminal device to monitor paging for the first terminal device), and may also cancel the support, that is, no longer support the first terminal device to monitor paging for the second terminal device (or support the second terminal device to monitor paging for the first terminal device). Next, a fifth communication method is provided in the embodiments of the present application, which is used to introduce how to cancel support of the first terminal device to monitor paging for the second terminal device (or the second terminal device to monitor paging for the first terminal device). Please refer to fig. 6, which is a flowchart of the method. In the following description, the method is applied to the network architecture shown in fig. 1C or fig. 1D as an example.
Wherein, the embodiment shown in fig. 2 (or the embodiment shown in fig. 3), the embodiment shown in fig. 4 and the embodiment shown in fig. 6 can be three independent embodiments, which are not combined; alternatively, any two of the embodiments shown in fig. 2 (or the embodiment shown in fig. 3), the embodiment shown in fig. 4, or the embodiment shown in fig. 6 can be combined, for example, the embodiment shown in fig. 2 (or the embodiment shown in fig. 3) can be combined with the embodiment shown in fig. 6 and the embodiment shown in fig. 4 can be used alone, or the embodiment shown in fig. 4 can be combined with the embodiment shown in fig. 6 and the embodiment shown in fig. 2 (or the embodiment shown in fig. 3) can be used alone, or all three embodiments can be used in combination; alternatively, the embodiment shown in fig. 2 (or the embodiment shown in fig. 3), the embodiment shown in fig. 4, and the embodiment shown in fig. 6, which may be applied in combination.
Alternatively, the embodiment shown in fig. 2 (or the embodiment shown in fig. 3), the embodiment shown in fig. 5, and the embodiment shown in fig. 6 may be three embodiments independent of each other, all of which are not combined; alternatively, any two of the embodiments shown in fig. 2 (or the embodiment shown in fig. 3), the embodiment shown in fig. 5, or the embodiment shown in fig. 6 can be combined, for example, the embodiment shown in fig. 2 (or the embodiment shown in fig. 3) can be combined with the embodiment shown in fig. 6 and the embodiment shown in fig. 5 can be used alone, or the embodiment shown in fig. 5 can be combined with the embodiment shown in fig. 6 and the embodiment shown in fig. 2 (or the embodiment shown in fig. 3) can be used alone, or all three embodiments can be used in combination; alternatively, the embodiment shown in fig. 2 (or the embodiment shown in fig. 3), the embodiment shown in fig. 5, and the embodiment shown in fig. 6, which may be applied in combination.
For ease of description, in the following, the method is performed by a network device and a terminal device as an example. The first core network device described below is a core network device serving a first terminal device, and the second core network device is a core network device serving a second terminal device. The first core network device and the second core network device may be the same core network device, or may be different core network devices.
If the embodiment of the present application is applied to the network architecture shown in fig. 1C, the first terminal device described below may be a terminal device 1 (i.e., a relay terminal device) in the network architecture shown in fig. 1C, the second terminal device described below may be a terminal device 2 (i.e., a remote terminal device) in the network architecture shown in fig. 1C, the first core network device described below may be a core network device in the network architecture shown in fig. 1C, and the second core network device described below may also be a core network device in the network architecture shown in fig. 1C; alternatively, the first terminal device described below may be the terminal device 2 in the network architecture shown in fig. 1C, the second terminal device described below may be the terminal device 1 in the network architecture shown in fig. 1C, the first core network device described below may be the core network device in the network architecture shown in fig. 1C, and the second core network device described below may also be the core network device in the network architecture shown in fig. 1C. It can be seen that, in this scenario, the first core network device and the second core network device are the same core network device.
Alternatively, if the embodiment of the present application is applied to the network architecture shown in fig. 1D, the first terminal device described below may be the terminal device 1 (i.e., a relay terminal device) in the network architecture shown in fig. 1D, the second terminal device described below may be the terminal device 2 (i.e., a remote terminal device) in the network architecture shown in fig. 1D, the first core network device described below may be the core network device 1 in the network architecture shown in fig. 1D, and the second core network device described below may also be the core network device 2 in the network architecture shown in fig. 1D; alternatively, the first terminal device described below may be the terminal device 2 in the network architecture shown in fig. 1D, the second terminal device described below may be the terminal device 1 in the network architecture shown in fig. 1D, the first core network device described below may be the core network device 2 in the network architecture shown in fig. 1D, and the second core network device described below may also be the core network device 1 in the network architecture shown in fig. 1D. It can be seen that in this scenario, the first core network device and the second core network device are different core network devices.
S601, the first terminal device sends a first indication message to the first core network device, and correspondingly, the first core network device receives the first indication message from the first terminal device.
For example, if the second terminal device listens for pages for the first terminal device, then the first indication message may request that the second terminal device no longer listens for pages, or request that pages be listened to from the network, or request that the first terminal device and the second terminal device be no longer associated. Alternatively, the first indication message may also be a message indicating that the second terminal device is no longer accessing (or communicating with) the network, and if this is the case, the first indication message is considered to be an implicit request that the second terminal device is no longer listening to pages.
For another example, if the first terminal device listens for pages for the second terminal device, then the first indication message may request that pages are no longer listened for the second terminal device, or that the second terminal device listens for pages from the network, or that the first terminal device and the second terminal device are no longer associated. Alternatively, the first indication message may be a message for indicating that the relay service is no longer provided for the second terminal device, and if this is the case, the first indication message is considered to be an implicit request that the paging is no longer monitored for the second terminal device.
The first indication message is, for example, an NAS message, such as a registration request message of the first terminal device. Alternatively, the first indication message may also be an N2 message sent by the access network device to the first core network device, for example, the first terminal device may send the first indication message to the access network device, and the access network device sends the first indication message to the first core network device.
S602, if the second terminal device monitors paging for the first terminal device, the first core network device determines that the first terminal device is no longer supported to monitor paging through the second terminal device, or determines that the first terminal device is no longer associated with the second terminal device. Or, if the first terminal device monitors paging for the second terminal device, the first core network device determines that the second terminal device is no longer supported to monitor paging through the first terminal device, or determines that the first terminal device and the second terminal device are no longer associated.
The first core network device may perform S602 after receiving the first indication message, or may perform S602 even if the first indication message is not received, for example, the first core network device may determine that the first terminal device and the second terminal device are no longer associated according to other factors. S601 is therefore an optional step, indicated by the dashed line in fig. 6.
If the first core network device determines that it no longer supports the first terminal device to listen to the page through the second terminal device, or determines that it no longer supports the second terminal device to listen to the page through the first terminal device, or determines that it no longer associates the first terminal device with the second terminal device, the first core network device may cancel the association relationship between the first terminal device and the second terminal device (i.e., the second association relationship described in the embodiment shown in fig. 2, and for the explanation of the second association relationship, refer to the description of the embodiment shown in fig. 2).
S603, the first core network device sends a second indication message to the second core network device, and correspondingly, the second core network device receives the second indication message from the first core network device. For example, the second indication message may comprise the current identity of the first terminal device, or comprise the current identity of the second terminal device, or comprise the current identity of the first terminal device and the current identity of the second terminal device. With regard to the description of the identification of the terminal device, reference may be made to any one of the embodiments shown in fig. 2 to 5.
If the second terminal device listens for pages for the first terminal device, the second indication message may indicate that the first terminal device is no longer supported to listen for pages through the second terminal device, or indicate that the first terminal device and the second terminal device are no longer associated. Alternatively, if the first terminal device listens for pages for the second terminal device, the second indication message may indicate that the second terminal device is no longer supported to listen for pages by the first terminal device, or indicate that the first terminal device and the second terminal device are no longer associated.
If the second core network device determines that the first terminal device is no longer supported to monitor paging through the second terminal device according to the second indication message, or determines that the second terminal device is no longer supported to monitor paging through the first terminal device, or determines that the first terminal device and the second terminal device are no longer associated, the second core network device may cancel the second association relationship between the first terminal device and the second terminal device.
S604, the second core network device sends a first acknowledgement message to the first core network device, and accordingly, the first core network device receives the first acknowledgement message from the second core network device.
If the second terminal device listens for pages for the first terminal device, the first confirmation message may be used to confirm that the first terminal device is no longer supported to listen for pages through the second terminal device, or to confirm that the first terminal device and the second terminal device are no longer associated. Alternatively, if the first terminal device listens for pages for the second terminal device, the first confirmation message may be used to confirm that the second terminal device is no longer supported to listen for pages by the first terminal device, or to confirm that the first terminal device and the second terminal device are no longer associated.
S605, the first core network device sends a third indication message to the first terminal device, and accordingly, the first terminal device receives the third indication message from the first core network device.
The third indication message may be used to indicate that the second terminal device is no longer listening for pages if the second terminal device is listening for pages for the first terminal device, or to indicate that the first terminal device and the second terminal device are no longer associated, or to indicate that pages are listening from the network. Alternatively, if the first terminal device listens for pages for the second terminal device, the third indication message may be used to indicate that the first terminal device is no longer listening for pages, or to indicate that the first terminal device and the second terminal device are no longer associated, or to indicate that pages are listened for from the network.
If the second terminal device monitors paging for the first terminal device, the first terminal device does not monitor paging through the second terminal device but directly monitors paging from the network after receiving the third indication message from the first core network device. The relay relationship between the first terminal device and the second terminal device may also continue to exist, that is, the second terminal device may also provide a relay service for the first terminal device; alternatively, if the first indication message is a message indicating that the second terminal device is no longer accessing (or communicating with) the network, the relay relationship between the first terminal device and the second terminal device no longer exists, that is, the second terminal device no longer provides the relay service for the first terminal device.
Or, if the first terminal device monitors paging for the second terminal device, after receiving the third indication message from the first core network device, the first terminal device does not monitor paging for the second terminal device any more, and the second terminal device monitors paging directly from the network. The relay relationship between the first terminal device and the second terminal device may also continue to exist, that is, the first terminal device may also provide a relay service for the second terminal device; or, if the first indication message is a message for indicating that the relay service is no longer provided for the second terminal device, the relay relationship between the first terminal device and the second terminal device also no longer exists, that is, the first terminal device no longer provides the relay service for the second terminal device.
S606, the first terminal device sends a fourth indication message to the second terminal device, and the second terminal device receives the fourth indication message from the first terminal device accordingly. The fourth indication message may be a PC5-RRC message, or may be a PC5-S message, for example.
If the second terminal device monitors paging for the first terminal device, the fourth indication message may be used to indicate that the second terminal device does not monitor paging any more, or to indicate that the first terminal device monitors paging from the network. After receiving the fourth indication message, the second terminal device may no longer monitor paging for the first terminal device, and the first terminal device monitors paging from the network.
Alternatively, if the first terminal device listens for pages for the second terminal device, the fourth indication message may be used to indicate that pages are no longer being listened for the first terminal device, or to indicate that the second terminal device listens for pages from the network. After receiving the fourth indication message, the second terminal device may monitor the page from the network instead of monitoring the page by the first terminal device.
S607, the second terminal device sends a second confirmation message to the first terminal device, and correspondingly, the first terminal device receives the second confirmation message from the second terminal device. The second acknowledgement message may be considered a response message to the third indication message, e.g. the second acknowledgement message may be a PC5-RRC message or may be a PC5-S message.
The second acknowledgement message may be used to confirm that the second terminal device is no longer listening for pages, or to confirm that the first terminal device listens for pages from the network, if the second terminal device listens for pages for the first terminal device. Alternatively, if the first terminal device listens for pages for the second terminal device, the second acknowledgement message may be used to indicate that pages are no longer being listened for the first terminal device, or to acknowledge that the second terminal device listens for pages from the network.
Alternatively, S608 may be performed instead of S606 and S607. S606 to S607 and S608 may be two embodiments, and only one of them needs to be executed. Therefore, S606 to S608 are optional steps, and are indicated by dotted lines in fig. 6.
S608, the second core network device sends the fifth instruction message to the second terminal device, and accordingly, the second terminal device receives the fifth instruction message from the first core network device.
If the second terminal device monitors paging for the first terminal device, the fifth indication message may be used to indicate that the second terminal device is no longer monitoring paging, or to indicate that the first terminal device monitors paging from the network, or to indicate that the first terminal device and the second terminal device are no longer associated. After receiving the fifth indication message, the second terminal device may no longer monitor paging for the first terminal device, and the first terminal device monitors paging from the network.
Alternatively, if the first terminal device listens for pages for the second terminal device, the fifth indication message may be used to indicate that pages are no longer being listened for the first terminal device, or to indicate that the second terminal device listens for pages from the network, or to indicate that the first terminal device and the second terminal device are no longer associated. After receiving the fifth indication message, the second terminal device may monitor the page from the network instead of monitoring the page by the first terminal device.
By the method provided by the embodiment of the application, the first terminal device can monitor the paging through the second terminal device (or the second terminal device monitors the paging through the first terminal device), and the first terminal device can also cancel the paging monitored through the second terminal device (or the second terminal device monitors the paging through the first terminal device), so that the paging monitoring mode of the terminal device is more flexible.
The following describes an apparatus for implementing the above method in the embodiment of the present application with reference to the drawings. Therefore, the above contents can be used in the subsequent embodiments, and the repeated contents are not repeated.
Fig. 7 is a schematic block diagram of a communication device 700 according to an embodiment of the present application. Exemplarily, the communication apparatus 700 is, for example, a first terminal device 700. Illustratively, the first terminal device 700 is, for example, the first terminal device described in the embodiment shown in fig. 5.
The first terminal device 700 includes a transmitting module 720 and a receiving module 730. Optionally, the first terminal device 700 may further include a processing module 710. Illustratively, the first terminal device 700 may be a terminal device, and may also be a chip applied in the terminal device or other combined devices, components, and the like having the functions of the first terminal device. When the first terminal device 700 is a terminal device, the transmitting module 720 may be a transmitter, the transmitter may include an antenna, a radio frequency circuit, and the like, the receiving module 730 may be a receiver, the receiver may include an antenna, a radio frequency circuit, and the like, wherein the transmitter and the receiver may be different modules, respectively, or the transmitter and the receiver may be disposed in the same functional module, which may be called a transceiver, and the processing module 710 may be a processor (or processing circuit), such as a baseband processor, which may include one or more Central Processing Units (CPUs). When the first terminal device 700 is a component having the above-mentioned function of the first terminal device, the transmitting module 720 may be a radio frequency unit, and the receiving module may also be a radio frequency unit, wherein the transmitter and the receiver may be different modules respectively, or the transmitter and the receiver may be disposed in the same functional module, which may be a radio frequency unit, and the processing module 710 may be a processor (or a processing circuit), such as a baseband processor. When the first terminal device 700 is a chip system, the transmitting module 720 may be an output interface of a chip (e.g., a baseband chip), the receiving module 730 may be an input interface of the chip (or, if the input interface and the output interface may be the same interface, the transmitting module 720 and the receiving module 730 are considered to be the same functional module, i.e., the input-output interface of the chip), the processing module 710 may be a processor (or, a processing circuit) of the chip system, and the processor may include one or more central processing units. It is to be understood that the processing module 710 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component (or, a processing circuit), the receiving module 730 may be implemented by a transceiver or a transceiver-related circuit component, and the sending module 720 may be implemented by a transmitter or a transmitter-related circuit component.
For example, the processing module 710 may be configured to perform all operations performed by the first terminal device in the embodiment shown in fig. 2 except transceiving operations, such as determining the first identifier from the ninth identifier, and/or other processes for supporting the techniques described herein. The transmitting module 720 may be used to perform all of the transmitting operations performed by the first terminal device in the embodiment shown in fig. 2, e.g., S202 and S209, and/or other processes for supporting the techniques described herein. The receiving module 730 may be used to perform all receiving operations performed by the first terminal device in the embodiment shown in fig. 2, such as S201, S207, S208, and S210, and/or other processes for supporting the techniques described herein.
Also for example, processing module 710 may be used to perform all operations performed by the first terminal device in the embodiment shown in fig. 3, except transceiving operations, and/or other processes to support the techniques described herein. The transmitting module 720 may be used to perform all of the transmitting operations performed by the first terminal device in the embodiment shown in fig. 3, and/or other processes for supporting the techniques described herein. The receiving module 730 may be used to perform all receiving operations performed by the first terminal device in the embodiment shown in fig. 3, e.g., S304, and/or other processes for supporting the techniques described herein.
Also for example, processing module 710 may be used to perform all operations performed by the first terminal device in the embodiment shown in fig. 4, except transceiving operations, and/or other processes to support the techniques described herein. The transmitting module 720 may be used to perform all of the transmitting operations performed by the first terminal device in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein. The receiving module 730 may be used to perform all receiving operations performed by the first terminal device in the embodiment shown in fig. 4, e.g., S409, and/or other processes for supporting the techniques described herein.
As another example, processing module 710 may be used to perform all operations performed by the first terminal device in the embodiment shown in fig. 5, except transceiving operations, and/or other processes to support the techniques described herein. The transmitting module 720 may be used to perform all of the transmitting operations performed by the first terminal device in the embodiment shown in fig. 5, and/or other processes for supporting the techniques described herein. The receiving module 730 may be used to perform all receiving operations performed by the first terminal device in the embodiment shown in fig. 5, e.g., S507, and/or other processes for supporting the techniques described herein.
Also for example, processing module 710 may be used to perform all operations performed by the first terminal device in the embodiment shown in fig. 6, except transceiving operations, and/or other processes to support the techniques described herein. The transmitting module 720 may be used to perform all of the transmitting operations performed by the first terminal device in the embodiment shown in fig. 6, e.g., S601 and S606, and/or other processes for supporting the techniques described herein. The receiving module 730 may be used to perform all receiving operations performed by the first terminal device in the embodiment shown in fig. 6, e.g., S605 and S607, and/or other processes for supporting the techniques described herein.
In addition, the transmitting module 720 and the receiving module 730 may be a single functional module, which can perform both the transmitting operation and the receiving operation, and may be referred to as a transceiver module, for example, the transceiver module may be used to perform all the transmitting operation and the receiving operation performed by the first terminal device in any one of the embodiments shown in fig. 2 to 5, for example, the transceiver module may be considered as the transmitting module when performing the transmitting operation, and the transceiver module may be considered as the receiving module when performing the receiving operation; alternatively, the sending module 720 and the receiving module 730 may also be two functional modules, the transceiver module may also be regarded as a general term for the two functional modules, the sending module 720 is configured to complete the sending operation, for example, the sending module 720 may be configured to perform all sending operations performed by the first terminal device in any one of the embodiments shown in fig. 2 to fig. 5, and the receiving module 730 is configured to complete the receiving operation, for example, the receiving module 730 may be configured to perform all receiving operations performed by the first terminal device in any one of the embodiments shown in fig. 2 to fig. 5.
Regarding other functions that can be implemented by the first terminal device 700, reference may be made to related descriptions of any one of the embodiments shown in fig. 2 to fig. 5, which are not repeated herein.
Fig. 8 is a schematic block diagram of a communication device 800 according to an embodiment of the present application. Exemplarily, the communication apparatus 800 is, for example, a first core network device 800. Illustratively, the first core network device 800 is, for example, the second terminal device according to the embodiment shown in fig. 5.
The first core network device 800 comprises a processing module 810 and a receiving module 830. Optionally, the second terminal device may further include a sending module 820. For example, the first core network device 800 may be a core network device, and may also be a chip applied in the core network device or other combined devices, components, and the like having the functions of the first core network device. When the first core network device 800 is a core network device, the transmitting module 820 may be a transmitter, the transmitter may include an antenna, a radio frequency circuit, and the like, the receiving module 830 may be a receiver, the receiver may include an antenna, a radio frequency circuit, and the like, wherein the transmitter and the receiver may be different modules, respectively, or the transmitter and the receiver may be disposed in the same functional module, which may be called a transceiver, and the processing module 810 may be a processor (or a processing circuit), such as a baseband processor, which may include one or more CPUs therein. When the first core network device 800 is a component having the above-mentioned function of the first core network device, the sending module 820 may be a radio frequency unit, and the receiving module may also be a radio frequency unit, where the transmitter and the receiver may be different modules respectively, or the transmitter and the receiver may be disposed in the same functional module, which may be a radio frequency unit, and the processing module 810 may be a processor (or a processing circuit), such as a baseband processor. When the first core network device 800 is a chip system, the transmitting module 820 may be an output interface of a chip (e.g., a baseband chip), the receiving module 830 may be an input interface of the chip (or, if the input interface and the output interface may be the same interface, the transmitting module 820 and the receiving module 830 are considered to be the same functional module, i.e., an input-output interface of the chip), the processing module 810 may be a processor (or, a processing circuit) of the chip system, and the processor may include one or more central processing units. It is to be understood that the processing module 810 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component (or, a processing circuit), the receiving module 830 may be implemented by a transceiver or a transceiver-related circuit component, and the transmitting module 820 may be implemented by a transmitter or a transmitter-related circuit component.
For example, the processing module 810 may be configured to perform all operations performed by the first core network device in the embodiment illustrated in fig. 2, except transceiving operations, e.g., S203 and S204, and/or other processes to support the techniques described herein. The transmitting module 820 may be configured to perform all transmitting operations performed by the first core network device in the embodiment shown in fig. 2, e.g., S205, S207, and S210, and/or other processes for supporting the techniques described herein. The receiving module 830 may be configured to perform all receiving operations performed by the first core network device in the embodiment shown in fig. 2, e.g., S202 and S206, and/or other processes for supporting the techniques described herein.
As another example, the processing module 810 may be configured to perform all operations performed by the first core network device in the embodiment illustrated in fig. 3, except for transceiving operations, e.g., S303, and/or other processes to support the techniques described herein. The transmitting module 820 may be configured to perform all transmitting operations performed by the first core network device in the embodiment shown in fig. 3, e.g., S304, and/or other procedures for supporting the techniques described herein. The receiving module 830 may be configured to perform all receiving operations performed by the first core network device in the embodiment shown in fig. 3, such as S202 and S302, and/or other processes for supporting the techniques described herein.
As another example, the processing module 810 may be configured to perform all operations performed by the first core network device in the embodiment illustrated in fig. 4, except for transceiving operations, e.g., S404 and S408, and/or other processes to support the techniques described herein. The sending module 820 may be configured to perform all sending operations performed by the first core network device in the embodiment shown in fig. 4, e.g., S401, S405, and S409, and/or other procedures for supporting the techniques described herein. The receiving module 830 may be configured to perform all receiving operations performed by the first core network device in the embodiment shown in fig. 4, e.g., S403 and S407, and/or other processes for supporting the techniques described herein.
As another example, the processing module 810 may be configured to perform all operations performed by the first core network device in the embodiment illustrated in fig. 5, except for transceiving operations, e.g., S504 and S506, and/or other processes to support the techniques described herein. The sending module 820 may be configured to perform all sending operations performed by the first core network device in the embodiment shown in fig. 5, e.g., S501 and S507, and/or other processes for supporting the techniques described herein. The receiving module 830 may be configured to perform all receiving operations performed by the first core network device in the embodiment shown in fig. 5, such as S503 and S505, and/or other processes for supporting the techniques described herein.
Also for example, the processing module 810 may be configured to perform all operations performed by the first core network device in the embodiment shown in fig. 6, except for transceiving operations, e.g., S602, and/or other processes to support the techniques described herein. The sending module 820 may be configured to perform all sending operations performed by the first core network device in the embodiment shown in fig. 6, e.g., S603 and S605, and/or other processes for supporting the techniques described herein. The receiving module 830 may be configured to perform all receiving operations performed by the first core network device in the embodiment shown in fig. 6, e.g., S601 and S604, and/or other processes for supporting the techniques described herein.
In addition, regarding the implementation of the transmitting module 820 and the receiving module 830, reference may be made to the introduction of the implementation of the transmitting module 720 and the receiving module 730.
For other functions that can be implemented by the first core network device 800, reference may be made to related descriptions of any one of the embodiments shown in fig. 2 to fig. 6, which are not repeated herein.
Fig. 9 is a schematic block diagram of a communication device 900 according to an embodiment of the present application. Exemplarily, the communication apparatus 900 is, for example, the second core network device 900.
The second core network device 900 includes a transmitting module 920 and a receiving module 930. Optionally, the second core network device 900 further includes a processing module 910. For example, the second core network device 900 may be a core network device, and may also be a chip applied in the core network device or other combined devices, components, and the like having the functions of the second core network device. When the second core network device 900 is a core network device, the sending module 920 may be a transmitter, the transmitter may include an antenna, a radio frequency circuit, and the like, the receiving module 930 may be a receiver, the receiver may include an antenna, a radio frequency circuit, and the like, wherein the transmitter and the receiver may be different modules respectively, or the transmitter and the receiver may be disposed in the same functional module, which may be called a transceiver, and the processing module 910 may be a processor (or a processing circuit), such as a baseband processor, which may include one or more CPUs therein. When the second core network device 900 is a component having the functions of the second core network device, the sending module 920 may be a radio frequency unit, and the receiving module may also be a radio frequency unit, where the transmitter and the receiver may be different modules respectively, or the transmitter and the receiver may be disposed in the same functional module, which may be a radio frequency unit, and the processing module 910 may be a processor (or a processing circuit), such as a baseband processor. When the second core network device 900 is a chip system, the sending module 920 may be an output interface of a chip (e.g., a baseband chip), the receiving module 930 may be an input interface of the chip (or, if the input interface and the output interface may be the same interface, the sending module 920 and the receiving module 930 are considered to be the same functional module, i.e., an input-output interface of the chip), the processing module 910 may be a processor (or, a processing circuit) of the chip system, and the processor may include one or more central processing units. It should be understood that the processing module 910 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component (or, a processing circuit), the receiving module 930 may be implemented by a transceiver or a transceiver-related circuit component, and the sending module 920 may be implemented by a transmitter or a transmitter-related circuit component.
For example, the processing module 910 may be configured to perform all operations performed by the second core network device in the embodiment shown in fig. 2 except for transceiving operations, such as establishing an association relationship between the first terminal device and the second terminal device, and/or other processes for supporting the techniques described herein. The sending module 920 may be configured to perform all sending operations performed by the second core network device in the embodiment shown in fig. 2, e.g., S206, and/or other procedures for supporting the techniques described herein. The receiving module 930 may be configured to perform all receiving operations performed by the second core network device in the embodiment shown in fig. 2, e.g., S205, and/or other procedures for supporting the techniques described herein.
As another example, the processing module 910 may be used to perform all operations performed by the second core network device in the embodiment shown in fig. 3, except transceiving operations, and/or other processes to support the techniques described herein. The sending module 920 may be configured to perform all sending operations performed by the second core network device in the embodiment shown in fig. 3, e.g., S302, and/or other procedures for supporting the techniques described herein. The receiving module 930 may be configured to perform all receiving operations performed by the second core network device in the embodiment shown in fig. 3, e.g., S301, and/or other processes for supporting the techniques described herein.
As another example, the processing module 910 may be configured to perform all operations performed by the second core network device in the embodiment shown in fig. 4, except for transceiving operations, e.g., S402 and S406, and/or other processes for supporting the techniques described herein. The sending module 920 may be configured to perform all sending operations performed by the second core network device in the embodiment shown in fig. 4, e.g., S403, S407, and S410, and/or other processes for supporting the techniques described herein. The receiving module 930 may be configured to perform all receiving operations performed by the second core network device in the embodiment shown in fig. 4, e.g., S401 and S405, and/or other processes for supporting the techniques described herein.
As another example, the processing module 910 may be configured to perform all operations performed by the second core network device in the embodiment shown in fig. 5 except for transceiving operations, e.g., S502, and/or other processes for supporting the techniques described herein. The sending module 920 may be configured to perform all sending operations performed by the second core network device in the embodiment shown in fig. 5, such as S503, and S507, and/or other processes for supporting the techniques described herein. The receiving module 930 may be configured to perform all receiving operations performed by the second core network device in the embodiment shown in fig. 5, e.g., S501, and/or other procedures for supporting the techniques described herein.
Also for example, the processing module 910 may be used to perform all operations performed by the second core network device in the embodiment shown in fig. 6, except transceiving operations, and/or other processes to support the techniques described herein. The sending module 920 may be configured to perform all sending operations performed by the second core network device in the embodiment shown in fig. 6, e.g., S604 and S608, and/or other processes for supporting the techniques described herein. The receiving module 930 may be configured to perform all receiving operations performed by the second core network device in the embodiment shown in fig. 6, e.g., S603, and/or other procedures for supporting the techniques described herein.
In addition, regarding the implementation of the sending module 920 and the receiving module 930, reference may be made to the introduction of the implementation of the sending module 720 and the receiving module 730.
For other functions that can be implemented by the second core network device 900, reference may be made to related descriptions of any one of the embodiments shown in fig. 2 to fig. 6, which are not repeated herein.
The embodiment of the application also provides a communication device, and the communication device can be terminal equipment or a circuit. The communication apparatus may be configured to perform the actions performed by the terminal device (e.g., the first terminal device) in the above-described method embodiments.
When the communication apparatus is a terminal device, fig. 10 shows a simplified structural diagram of the terminal device. For ease of understanding and illustration, in fig. 10, the terminal device is exemplified by a mobile phone. As shown in fig. 10, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.
When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 10. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.
In the embodiment of the present application, an antenna and a radio frequency circuit having a transceiving function may be regarded as a transceiving unit of a terminal device (the transceiving unit may be a functional unit, and the functional unit is capable of implementing a transmitting function and a receiving function, or the transceiving unit may also include two functional units, which are respectively a receiving unit capable of implementing a receiving function and a transmitting unit capable of implementing a transmitting function), and a processor having a processing function may be regarded as a processing unit of the terminal device. As shown in fig. 10, the terminal device includes a transceiving unit 1010 and a processing unit 1020. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Optionally, a device for implementing the receiving function in the transceiving unit 1010 may be regarded as a receiving unit, and a device for implementing the transmitting function in the transceiving unit 1010 may be regarded as a transmitting unit, that is, the transceiving unit 1010 includes a receiving unit and a transmitting unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.
It should be understood that the transceiving unit 1010 may be configured to perform the transmitting operation and the receiving operation on the first terminal device side in the above-described embodiment shown in fig. 2, and the processing unit 1020 is configured to perform other operations on the first terminal device besides the transceiving operation in the above-described embodiment shown in fig. 2.
Alternatively, the transceiver 1010 may be configured to perform the transmitting operation and the receiving operation on the first terminal device side in the above-described embodiment shown in fig. 3, and the processing unit 1020 is configured to perform other operations besides the transceiving operation on the first terminal device in the above-described embodiment shown in fig. 3.
Alternatively, the transceiver 1010 may be configured to perform the transmitting operation and the receiving operation on the first terminal device side in the embodiment shown in fig. 4, and the processing unit 1020 is configured to perform other operations except the transceiving operation on the first terminal device in the embodiment shown in fig. 4.
Alternatively, the transceiver 1010 may be configured to perform the transmitting operation and the receiving operation on the first terminal device side in the above-described embodiment shown in fig. 5, and the processing unit 1020 is configured to perform other operations besides the transceiving operation on the first terminal device in the above-described embodiment shown in fig. 5.
Alternatively, the transceiver 1010 may be configured to perform the transmitting operation and the receiving operation on the first terminal device side in the above-described embodiment shown in fig. 6, and the processing unit 1020 is configured to perform other operations except the transceiving operation on the first terminal device in the above-described embodiment shown in fig. 6.
When the communication device is a chip-like device or circuit, the device may comprise a transceiver unit and a processing unit. The transceiver unit may be an input/output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit.
When the communication device in this embodiment is a terminal device, reference may be made to the device shown in fig. 11. As an example, the device may perform functions similar to processing module 710 of FIG. 7. For example, the processing module 710 in the above embodiments may be the processor 1110 in fig. 11, and performs the corresponding functions; the sending module 720 in the above embodiments may be the sending data processor 1120 in fig. 11, and performs the corresponding functions; the receiving module 730 in the above embodiments may be the received data processor 1130 in fig. 11, and performs the corresponding functions. Although fig. 11 shows a channel encoder and a channel decoder, it is understood that these blocks are not limitative and only illustrative to the present embodiment.
Fig. 12 shows another form of the present embodiment. The processing device 1200 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems. The communication device in this embodiment may serve as a modulation subsystem therein. In particular, the modulation subsystem may include a processor 1203, an interface 1204. The processor 1203 completes the functions of the processing module 710, and the interface 1204 completes the functions of the sending module 720 and the receiving module 730. As another variation, the modulation subsystem includes a memory 1206, a processor 1203, and a program stored in the memory 1206 and executable on the processor, and the processor 1203 executes the program to implement the method on the terminal device side in the above method embodiments. It should be noted that the memory 1206 may be non-volatile or volatile, and may be located within the modulation subsystem or within the processing device 1200, as long as the memory 1206 can be connected to the processor 1203.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device including one or more available media integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
The various illustrative logical units and circuits described in this application may be implemented or operated upon by design of a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.
The steps of a method or algorithm described in the embodiments herein may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software cells may be stored in Random Access Memory (RAM), flash memory, read-only memory (ROM), EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a storage medium may be coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one or more exemplary designs, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media that facilitate transfer of a computer program from one place to another. Storage media may be any available media that can be accessed by a general purpose or special purpose computer. For example, such computer-readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store program code in the form of instructions or data structures and which can be read by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Additionally, any connection is properly termed a computer-readable medium, and, thus, is included if the software is transmitted from a website, server, or other remote source over a coaxial cable, fiber optic computer, twisted pair, Digital Subscriber Line (DSL), or wirelessly, e.g., infrared, radio, and microwave. Such discs (disks) and disks (discs) include compact disks, laser disks, optical disks, Digital Versatile Disks (DVDs), floppy disks and blu-ray disks, where disks usually reproduce data magnetically, while disks usually reproduce data optically with lasers. Combinations of the above may also be included in the computer-readable medium.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the embodiments of the present application in further detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present application, and are not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application. The foregoing description of the embodiments of the present application is provided to enable any person skilled in the art to make or use the teachings of the embodiments of the present application, and any modifications based on the disclosed teachings should be considered obvious to those skilled in the art, and the general principles described in the embodiments of the present application may be applied to other variations without departing from the inventive concept and scope of the present application. Thus, the disclosure of the embodiments of the present application is not intended to be limited to the embodiments and designs described, but is to be accorded the widest scope consistent with the principles of the application and novel features disclosed.
Although the present application has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made thereto without departing from the spirit and scope of the embodiments of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the embodiments of the present application are intended to include such modifications and variations as well.

Claims (19)

1. A method of communication, comprising:
a first terminal device sends a first identifier to a first core network device, wherein the first identifier is an identifier of a second terminal device, or the first identifier is an identifier of the first terminal device, and the first terminal device provides a relay service for the second terminal device, or the second terminal device provides a relay service for the first terminal device;
The first terminal device receives a second identifier from the first core network device, where the second identifier is a new identifier allocated to the first terminal device, where a paging occasion corresponding to the second identifier is the same as a paging occasion of the second terminal device, or a time domain distance between the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device is smaller than or equal to a first threshold, or the paging occasion corresponding to the second identifier and the paging occasion of the second terminal device are partially overlapped or completely overlapped in a time domain.
2. The method of claim 1,
the UE _ ID corresponding to the second identifier is the same as the UE _ ID corresponding to the identifier of the second terminal equipment; or,
the UE _ ID mod N corresponding to the second identifier is the same as the UE _ ID mod N corresponding to the identifier of the second terminal equipment; or,
UE _ ID mod (N) corresponding to the second identifiers) UE _ ID mod (N) corresponding to the identity of the second terminal devices) The same; or,
the difference value between the UE _ ID corresponding to the second identifier and the UE _ ID corresponding to the identifier of the second terminal equipment is smaller than or equal to a second threshold value; or,
The difference value between the UE _ ID mod N corresponding to the second identifier and the UE _ ID mod N corresponding to the identifier of the second terminal equipment is smaller than or equal to a third threshold value; or,
UE _ ID mod (N) corresponding to the second identifiers) UE _ ID mod (N) corresponding to the identity of the second terminal devices) The difference therebetween is less than or equal to a fourth threshold; or,
floor (UE _ ID/N) mod N corresponding to the second identifiersFloor (UE _ ID/N) mod N corresponding to the identity of the second terminal devicesThe difference therebetween is less than or equal to a fifth threshold;
wherein, the UE _ ID is a value of a 5G service temporary mobile subscriber identity 5G-S-TMSI mod 1024, N represents the total number of paging frames included in a discontinuous reception DRX period, and N issIndicating paging occasions covered by a paging frameThe number, mod, represents the modulo operation, floor () represents the round-down.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
the first terminal device receives the identification of the second terminal device from the second terminal device.
4. A method according to any of claims 1 to 3, wherein the first identity is a 5G-globally unique temporary user equipment identity, GUTI, 5G-S-TMSI, 5G-TMSI, UE _ ID mod N, or UE _ ID mod (N) s) Wherein N represents the total number of paging frames included in one DRX period, and NsThe total number of paging occasions included in one paging frame is shown, the UE _ ID is the value of 5G-S-TMSImod 1024, and mod represents the modular operation.
5. The method according to any one of claims 1 to 4,
the second terminal device provides a relay service for the first terminal device, the first identifier is further used for indicating that the first terminal device requests to monitor a paging message through the second terminal device; or,
the method further comprises the following steps: and the first terminal equipment sends a first message to the first core network equipment, wherein the first message is used for indicating the first terminal equipment to request to monitor a paging message through the second terminal equipment.
6. The method of claim 5, wherein the first message is a registration request message or the first message is a message for requesting a service.
7. The method according to any one of claims 1 to 6,
the second terminal device provides a relay service for the first terminal device, and the second identifier is further used for indicating to allow the first terminal device to monitor a paging message through the second terminal device; or,
The method further comprises the following steps: and the first terminal equipment receives a second message from the first core network equipment, wherein the second message is used for indicating that the first terminal equipment is allowed to monitor the paging message through the second terminal equipment.
8. The method according to any one of claims 1 to 7, further comprising:
the first terminal equipment receives a second DRX period from the second terminal equipment, wherein the second DRX period is the DRX period of the second terminal equipment;
and the first terminal equipment and the first core network equipment determine a first DRX period through negotiation, wherein the first DRX period is the DRX period of the first terminal equipment, and the first DRX period is greater than or equal to the second DRX period.
9. The method according to any one of claims 1 to 8, wherein the second terminal device provides a relay service for the first terminal device, the method further comprising:
the first terminal device sends a third message to the second terminal device, wherein the third message is used for requesting to monitor a paging message through the second terminal device;
and the first terminal equipment receives a fourth message from the second terminal equipment, wherein the fourth message is used for indicating that the first terminal equipment monitors paging messages.
10. The method according to any one of claims 1 to 8, wherein the first terminal device provides a relay service for the second terminal device, the method further comprising:
the first terminal device receives a third message from the second terminal device, wherein the third message is used for requesting to monitor a paging message through the first terminal device;
and the first terminal equipment sends a fourth message to the second terminal equipment, wherein the fourth message is used for indicating that the second terminal equipment monitors the paging message.
11. The method of claim 10, further comprising:
and the first terminal equipment monitors paging messages for the second terminal equipment according to a third DRX cycle, wherein when the first DRX cycle is greater than or equal to the second DRX cycle, the third DRX cycle is the second DRX cycle, or when the first DRX cycle is smaller than the second DRX cycle, the third DRX cycle is the first DRX cycle, the first DRX cycle is the DRX cycle of the first terminal equipment, and the second DRX cycle is the DRX cycle of the second terminal equipment.
12. The method according to any one of claims 1 to 8, wherein the first terminal device provides a relay service for the second terminal device, the method further comprising:
And the first terminal equipment receives a fifth message from the first core network equipment, wherein the fifth message is used for indicating the second terminal equipment to monitor the paging message through the first terminal equipment.
13. The method according to claim 12, wherein the fifth message further comprises an identity of the second terminal device or a third identity, and/or comprises a second DRX cycle, wherein the third identity is an identity determined according to the identity of the second terminal device, and wherein the second DRX cycle is the DRX cycle of the second terminal device.
14. The method according to any one of claims 1 to 13, wherein the second terminal device provides a relay service for the first terminal device, the method further comprising:
and the first terminal equipment receives a third indication message from the first core network equipment, wherein the third indication message is used for indicating that the first terminal equipment does not monitor the paging message through the second terminal equipment any more.
15. The method of claim 14, further comprising:
and the first terminal equipment sends a first indication message to the first core network equipment, wherein the first indication message is used for requesting no more monitoring of the paging message through the second terminal equipment.
16. The method according to claim 14 or 15, characterized in that the method further comprises:
and the first terminal equipment sends a fourth indication message to the second terminal equipment, wherein the fourth indication message is used for indicating that the paging message is not monitored by the second terminal equipment any more.
17. A communication device comprising a processor and a transceiver, wherein the processor is coupled to the transceiver for performing the method of any of claims 1-16.
18. A communication device comprising a processing module and a transceiver module, wherein the processing module is coupled to the transceiver module for performing the method of any one of claims 1-16.
19. A computer-readable storage medium, for storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 16.
CN202010734069.2A 2020-07-24 2020-07-24 Communication method and device Pending CN113973359A (en)

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