CN114424637A

CN114424637A - Paging method and device

Info

Publication number: CN114424637A
Application number: CN201980100388.3A
Authority: CN
Inventors: 张宏平; 彭文杰; 曾清海
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2022-04-29
Anticipated expiration: 2039-09-30
Also published as: WO2021062745A1; CN114424637B

Abstract

The application provides a paging method and a paging device. In the paging method, a terminal device determines that a first subscriber identity includes a first paging occasion PO and a second PO in a paging cycle of the first subscriber identity, and the first PO and the second PO are used for an access network device to page the terminal device. Then, the terminal device monitors the first PO or the second PO for the paging message of the first user identity with the first user identity. Therefore, in the embodiment of the application, the first PO and the second PO are set in one paging cycle of the first subscriber identity of the terminal device, and the access network device sends the paging message on both the first PO and the second PO, so that when the terminal device monitors the paging message with the first subscriber identity, the terminal device can select to monitor the paging message on the first PO or monitor the paging message on the second PO, thereby helping to avoid paging loss, and further helping to avoid a call leakage problem caused by paging loss.

Description

Paging method and device

Technical Field

The present application relates to the field of communications, and more particularly, to a method and apparatus for paging in the field of communications.

Background

With the development of communication technology, many terminal devices (e.g., mobile phones) have a function of supporting a plurality of Subscriber Identity Module (SIM) cards. Taking the example that the terminal device supports two SIM cards, there are many possible implementation manners, such as a Dual SIM Single Standby (DSSS) mode, a Dual SIM Dual Standby (DSDS) mode, or a Dual SIM Dual Active (DSDA) mode.

In the DSDS mode, two SIM cards in the terminal equipment share a set of transceivers. For an idle (idle) terminal device, it needs to monitor paging messages of two SIMs. As an example, Time Division Multiplexing (TDM) may be employed to listen for paging messages. Specifically, a terminal device in an idle state (idle) or a deactivated state (inactive) needs to wake up at a certain time position at a certain period to monitor whether a network has a paging, where the time position may be referred to as a Paging Occasion (PO) of the terminal device.

For the DSDS mode terminal device, the time domain positions of the POs corresponding to the two SIM cards are the same or overlap, i.e. there is a paging collision. Since the terminal device can only monitor the paging message corresponding to one SIM on one PO, a situation that the paging message is not received by another SIM may occur.

Therefore, a paging scheme is needed to solve the problem how to perform paging when the terminal device in the DSDS mode performs paging in case of paging collision.

Disclosure of Invention

The application provides a paging method and a paging device, which can help to avoid paging loss of terminal equipment in a DSDS mode.

In a first aspect, a paging method is provided, and the method is applied to a terminal device, where the terminal device supports a first subscriber identity. The method is executed by the terminal device or a chip in the terminal device. The following describes an example in which the method is executed by a terminal device.

In the method, a terminal device determines that a first subscriber identity includes a first paging occasion PO and a second PO in one paging cycle of the first subscriber identity, and the first PO and the second PO are used for an access network device to page the terminal device. Then, the terminal device monitors the first PO or the second PO for the paging message of the first user identity according to the first user identity.

Therefore, in the embodiment of the application, the first PO and the second PO are set in one paging cycle of the first subscriber identity of the terminal device, and the access network device sends the paging message on both the first PO and the second PO, so that when the terminal device monitors the paging message with the first subscriber identity, the terminal device can select to monitor the paging message on the first PO or monitor the paging message on the second PO, thereby helping to avoid paging loss, and further helping to avoid a call leakage problem caused by paging loss.

With reference to the first aspect, in some implementations of the first aspect, the terminal device further supports a second subscriber identity, and the terminal device includes a third PO in one paging cycle of the second subscriber identity.

When the time domain position of the first PO overlaps with the time domain position of the third PO, the terminal device monitors the paging message of the second subscriber identity on the third PO in the second subscriber identity, and the terminal device monitors the paging message of the first subscriber identity on the second PO in the first subscriber identity. Or

When the time domain position of the second PO overlaps with the time domain position of the third PO, the terminal device monitors the paging message of the second subscriber identity on the third PO in the second subscriber identity, and the terminal device monitors the paging message of the first subscriber identity on the first PO in the first subscriber identity.

That is, when a conflict occurs, since the first subscriber identity has two POs in one paging cycle, it is possible to monitor the paging of the second subscriber identity preferentially, and monitor the paging of the first subscriber identity on the other PO of the first subscriber identity that is not in conflict, which can ensure that the paging messages of both subscriber identities are not lost.

Or, when the time domain position of the first PO and the time domain position of the second PO do not overlap with the time domain position of the third PO, the terminal device monitors the paging message of the first subscriber identity on the first PO or the second PO with the first subscriber identity, and the terminal device monitors the paging message of the second subscriber identity on the third PO with the second subscriber identity.

For example, the terminal device monitors the paging message of the first subscriber identity on the first PO and the PO appearing earlier in the second PO with the first subscriber identity, or the terminal device monitors the paging message of the first subscriber identity on the PO calculated from the UE ID with the first subscriber identity.

Therefore, in this embodiment of the application, in the case that the terminal device supports the first user identity and the second user identity, by setting the first PO and the second PO in one paging cycle of the first user identity of the terminal device, when the first user identity and the second user identity may have a paging conflict, the terminal device can select a PO that does not conflict with a PO in the paging cycle of the second user identity in the time domain resource to monitor on the PO when monitoring the paging message with the first user identity, so that the paging message loss of the user identity of the terminal device can be avoided.

With reference to the first aspect, in certain implementations of the first aspect, the time-domain location of the first PO is determined according to a first user equipment identity of the first user identity.

The time domain location of the second PO is determined from a second user equipment identity of the first user identity, wherein the second user equipment identity is different from the first user equipment identity.

For example, the first ue identity may be a ue identity assigned by the network to the terminal device when the terminal device is registered in the network with the first subscriber identity. For example, the second ue identity may be a ue identity different from the first ue identity, which is additionally allocated to the terminal device by the core network device (i.e. the first ue identity is allocated to two ue identities by the core network device).

Or, the time domain position of the second PO is determined according to the first user equipment identity and the first offset value. The first offset value may be used to indicate an offset of a third ue id corresponding to the second PO with respect to the first ue id. That is, the offset of the first offset value may be performed on the first ue identity to obtain a third ue identity, and then the second PO may be determined according to the third ue identity. Or

The time domain position of the second PO is determined according to the time domain position of the first PO and a second offset value, where the second offset value is used to indicate an offset of the time domain position of the second PO from the time domain position of the first PO.

With reference to the first aspect, in certain implementations of the first aspect, the second offset value includes at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.

With reference to the first aspect, in certain implementations of the first aspect, the first ue identity of the first subscriber identity includes a temporary mobile subscriber identity, S-TMSI, of the first subscriber identity. Also, the second user equipment identity may comprise S-TMSI.

With reference to the first aspect, in some implementation manners of the first aspect, the terminal device may further receive, from a core network device, the second user equipment identifier, or the first offset value, or the second offset value, with the first user identity.

In some possible implementations, the first offset value or the second offset value may be predefined. For example, the terminal device or the access network device may store the first offset value or the second offset value in advance, or define the first offset value or the second offset value by a protocol, which is not limited in this embodiment of the present application.

Therefore, in this embodiment of the application, the terminal device may determine the second PO according to the second user equipment identifier, or the first offset value, or the second offset value.

In some possible implementations, the terminal device may send, to the core network device, auxiliary information indicating a parameter of the first subscriber identity of the terminal device for determining the paging occasion and/or a parameter of the second subscriber identity of the terminal device for determining the paging occasion, with one subscriber identity (such as the first subscriber identity). After receiving the auxiliary information, the core network device may determine the second user equipment identifier, or the first offset value, or the second offset value according to the auxiliary information.

Therefore, the core network device can ensure that the second PO derived based on the second ue identity, or the first offset value, or the second offset value no longer conflicts with the PO of the second ue identity based on the auxiliary information, thereby avoiding the problem of the first ue identity and the second ue identity that the paging message is lost.

With reference to the first aspect, in some implementation manners of the first aspect, the terminal device may further send, to the core network device, first indication information with the first subscriber identity, where the first indication information is used to indicate that the terminal device supports at least two subscriber identities, or indicate that the first subscriber identity of the terminal device includes at least two POs in one paging cycle.

In a possible case, when the terminal device supports at least two user identities, regardless of whether paging collision may occur between the two user identities, the terminal device sends the first indication information for indicating to the core network device that the terminal device supports at least two user identities.

Therefore, by sending the first indication information to the core network device by the first subscriber identity when the terminal device supports at least two subscriber identities regardless of whether paging of the at least two subscriber identities conflicts, it is not necessary to frequently notify the network device whether paging messages need to be sent on at least two POs, so that signaling overhead of the system is reduced, and the implementation is relatively easy.

In a possible case, when the terminal device determines that the time domain position of the PO of the first subscriber identity overlaps with the time domain position of the PO of the second subscriber identity of the terminal device, the terminal device sends the first indication information to the core network device in the first subscriber identity.

Optionally, when the paging collision no longer occurs to the at least two user identities of the terminal device, for example, after the terminal device changes the serving cell (for example, performs cell reselection), the terminal device may notify the core network device that the paging collision no longer occurs to the at least two user identities. At this time, the access network device may recover the existing mechanism, that is, send the paging message on one PO in one paging cycle, to reduce the consumption of paging resources.

Therefore, when the terminal device determines that the time domain position of the PO of the first user identity conflicts with the time domain position of the PO of the second user identity, the first indication information is sent to the core network device by the first user identity, so that the access network device sends paging messages on at least two POs in one paging cycle, and the consumption of system paging resources can be reduced.

In some possible cases, the first indication information may be used to request the core network device to allocate an additional ue identity to the first ue identity of the terminal device.

After receiving the first indication information, the core network may know that the terminal device needs at least two POs in one paging cycle, that is, it may be inferred that the terminal device supports at least two user identities, or that paging collision may occur between at least two user identities of the terminal device. At this time, in order to avoid paging collision of multiple user identities of the terminal device, the core network device may assign an additional user equipment identifier to the terminal device.

In a second aspect, a method for paging is provided, and the method is applicable to a core network device. The method is executed by a chip in the core network equipment or the terminal equipment. The following describes an example in which the method is performed by a core network device.

In the method, the core network device obtains first indication information, where the first indication information is used to indicate that the terminal device supports at least two user identities, or indicate that one paging cycle of the first user identity of the terminal device includes at least two POs.

And the core network equipment sends second indication information to access network equipment, wherein the second indication information is used for indicating the access network equipment to send paging messages to the terminal equipment on the at least two POs.

Therefore, in the embodiment of the present application, at least two POs are set in one paging cycle of the first subscriber identity of the terminal device, and the access network device sends the paging message on both of the at least two POs, so that when the terminal device monitors the paging message with the first subscriber identity, the PO can be selected to monitor the paging message on one of the POs (for example, the PO which does not conflict with the PO in the paging cycle of the second subscriber identity supported by the terminal device on the time domain resource is selected to monitor the paging message), thereby helping to avoid paging loss, and further helping to avoid a call leakage problem caused by paging loss.

With reference to the second aspect, in some implementations of the second aspect, the core network device may send a paging message to the access network device, where the paging message is used to instruct the access network device to page the terminal device, and the paging message includes the second instruction information.

Therefore, in the embodiment of the present application, when the terminal device supports the first user identity and the second user identity, the first PO and the second PO are set in one paging cycle of the first user identity of the terminal device, so that when the terminal device monitors the paging message in an idle state with the first user identity, the PO which does not conflict with the PO in the paging cycle of the second user identity in the time domain resource can be selected to monitor, and thus the problem that the paging message is lost in multiple user identities of the terminal device can be avoided.

With reference to the second aspect, in some implementations of the second aspect, the core network device may send an initial context setup request message to the access network device, where the initial context setup request message includes the second indication information.

Therefore, in this embodiment of the application, when the terminal device supports the first user identity and the second user identity, by setting the first PO and the second PO in one paging cycle of the first user identity of the terminal device, when the terminal device monitors the paging message in the inactive state with the first user identity, the PO which does not conflict with the PO in the paging cycle of the second user identity in the time domain resource can be selected to monitor, so that the paging conflict of multiple user identities of the terminal device can be avoided.

With reference to the second aspect, in certain implementations of the second aspect, the at least two POs include a first PO and a second PO.

The second indication information includes a first user equipment identifier and a second user equipment identifier of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, and the second user equipment identifier is used to determine the second PO. Or

The second indication information includes a first user equipment identifier and a first offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, and the first offset value is used to determine the second PO. Or the like, or, alternatively,

the second indication information includes a first user equipment identifier and a second offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, the second offset value is used to determine the second PO, and the second offset value is used to indicate an offset of a time domain position of the second PO with respect to a time domain position of the first PO.

With reference to the second aspect, in certain implementations of the second aspect, the second offset value includes at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.

With reference to the second aspect, in some implementations of the second aspect, the first user equipment identification of the first user identity includes a temporary mobile subscriber identity, S-TMSI, of the first user identity.

With reference to the second aspect, in some implementations of the second aspect, the method further includes:

and the core network equipment sends the second user equipment identifier, or the first offset value, or the second offset value to the terminal equipment.

In some possible implementations, the core network device may receive auxiliary information sent by the terminal device, where the auxiliary information is used to indicate a parameter for determining a paging occasion of a first subscriber identity of the terminal device and/or a parameter for determining a paging occasion of a second subscriber identity of the terminal device. After receiving the auxiliary information, the core network device may determine the second user equipment identifier, or the first offset value, or the second offset value according to the auxiliary information.

In a third aspect, a method for paging is provided, which is applicable to a first access network device. The method is performed by a first access network device or a chip in the first access network device. The following description will take as an example that the method is performed by the first access network device.

In the method, a first access network device receives second indication information, where the second indication information is used to indicate that the first access network device sends a paging message to a terminal device on at least two paging occasions PO within one paging cycle of a first subscriber identity of the terminal device.

The first access network device may also determine a first PO and a second PO within the paging cycle, wherein the at least two POs include the first PO and the second PO.

And the first access network equipment sends a paging message to the terminal equipment on the first PO and the second PO.

With reference to the third aspect, in some implementations of the third aspect, the time-domain location of the first PO is determined according to a first user equipment identity of the first user identity.

Or, the time domain position of the second PO is determined according to the first user equipment identity and the first offset value. The first offset value may be used to indicate an offset of a third ue id corresponding to the second PO with respect to the first ue id. That is, the offset of the first offset value may be performed on the first ue identity to obtain a third ue identity, and then the second PO may be determined according to the third ue identity.

Or the time domain position of the second PO is determined according to the time domain position of the first PO and a second offset value, where the second offset value is used to indicate an offset of the time domain position of the second PO from the time domain position of the first PO.

With reference to the third aspect, in certain implementations of the third aspect, the second offset value includes at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.

With reference to the third aspect, in certain implementations of the third aspect, the first user equipment identification of the first user identity includes a temporary mobile subscriber identity, S-TMSI, of the first user identity.

Therefore, in this embodiment of the present application, the first access network device may determine the second PO according to the second user equipment identifier, or the first offset value, or the second offset value.

With reference to the third aspect, in some implementations of the third aspect, the first access network device may receive a paging message, where the paging message is used to instruct the first access network device to page the first subscriber identity of the terminal device, and the paging message includes the second indication information.

With reference to the third aspect, in some implementations of the third aspect, when the terminal device enters an idle state, the first access network device receives the paging message from the core network device.

With reference to the third aspect, in some implementations of the third aspect, when the terminal device enters an inactive state, the first access network device may receive the paging message from a second access network device, where the second access network device is an access network device that maintains a context of the first subscriber identity of the terminal device.

With reference to the third aspect, in some implementations of the third aspect, before the terminal device enters an inactive state, the first access network device may receive an initial context setup request message from the core network device, where the initial context setup request message includes the second indication information.

With reference to the third aspect, in some implementations of the third aspect, when a terminal device enters an inactive state, the first access network device may further send a paging message to a third access network device, where the first access network device is an access network device that stores a context of the first subscriber identity of the terminal device, and the paging message is used to instruct the third access network device to page the first subscriber identity of the terminal device, and the paging message includes the second indication information.

Therefore, in the embodiment of the present application, under the condition that the terminal device supports the first user identity and the second user identity, by setting the first PO and the second PO in one paging cycle of the first user identity of the terminal device, when the terminal device monitors the paging message in the inactive state with the first user identity, the PO which does not conflict with the PO in the paging cycle of the second user identity in the time domain resource can be selected to monitor, so that the problem that the paging message is lost in a plurality of user identities of the terminal device can be avoided.

With reference to the third aspect, in some implementation manners of the third aspect, the second indication information includes a first user equipment identifier and a second user equipment identifier of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO and the second user equipment identifier is used to determine the second PO. Or

the second indication information includes a first user equipment identifier and a second offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, the second offset value is used to determine the second PO, and the second offset value is used to indicate an offset value of a time domain position of the second PO with respect to a time domain position of the first PO.

With reference to the third aspect, in certain implementations of the third aspect, the second offset value includes a radio frame offset value, or at least one of a subframe offset value and a paging frame offset value.

In a fourth aspect, an apparatus for paging is provided to perform the method of the first aspect or any possible implementation manner of the first aspect. In particular, the apparatus comprises means for performing the method of the first aspect or any possible implementation manner of the first aspect.

The apparatus supports a first subscriber identity, the apparatus comprising a determining unit and a receiving unit.

A determining unit, configured to determine that the first subscriber identity includes a first paging occasion PO and a second PO in one paging cycle of the first subscriber identity, where the first PO and the second PO are used for an access network device to page the apparatus.

A receiving unit, configured to monitor a paging message of the first subscriber identity on the first PO or on the second PO with the first subscriber identity.

With reference to the fourth aspect, in some implementations of the fourth aspect, the apparatus further supports a second subscriber identity, the apparatus including a third PO within one paging cycle of the second subscriber identity.

When the time domain position of the first PO overlaps with the time domain position of the third PO, the apparatus monitors the third PO for the paging message of the second subscriber identity with the second subscriber identity, and the apparatus monitors the second PO for the paging message of the first subscriber identity with the first subscriber identity. Or

When the time domain position of the second PO overlaps with the time domain position of the third PO, the apparatus monitors the third PO for the paging message of the second subscriber identity with the second subscriber identity, and the apparatus monitors the first PO for the paging message of the first subscriber identity with the first subscriber identity. Or

When the time domain position of the first PO and the time domain position of the second PO do not overlap with the time domain position of the third PO, the apparatus monitors the paging message of the first subscriber identity on the first PO or the second PO with the first subscriber identity, and monitors the paging message of the second subscriber identity on the third PO with the second subscriber identity.

With reference to the fourth aspect, in some implementations of the fourth aspect, the time domain location of the first PO is determined according to a first user equipment identity of the first user identity.

The time domain location of the second PO is determined from a second user equipment identity of the first user identity, wherein the second user equipment identity is different from the first user equipment identity. Or

The time domain position of the second PO is determined according to the first user equipment identity and a first offset value. Or

With reference to the fourth aspect, in some implementations of the fourth aspect, the second offset value includes at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first user equipment identification of the first user identity includes a temporary mobile subscriber identity, S-TMSI, of the first user identity.

With reference to the fourth aspect, in some implementations of the fourth aspect, the receiving unit is further configured to receive, from a core network device, the second user equipment identifier, or the first offset value, or the second offset value, with the first user identity.

With reference to the fourth aspect, in some implementations of the fourth aspect, the sending unit is configured to send, to a core network device, first indication information with the first subscriber identity, where the first indication information is used to indicate that the apparatus supports at least two subscriber identities, or indicate that the first subscriber identity of the apparatus includes at least two POs in one paging cycle.

With reference to the fourth aspect, in some implementations of the fourth aspect, when the determining unit determines that the time domain position of the PO of the first subscriber identity overlaps with the time domain position of the PO of the second subscriber identity, the sending unit is further configured to send the first indication information to the core network device with the first subscriber identity.

In a fifth aspect, an apparatus for paging is provided to perform the method of the second aspect or any possible implementation manner of the second aspect. In particular, the apparatus comprises means for performing the method of the second aspect or any possible implementation manner of the second aspect. The device comprises a receiving unit and a transmitting unit.

A receiving unit, configured to obtain first indication information, where the first indication information is used to indicate that a terminal device supports at least two user identities, or indicate that a paging cycle of a first user identity of the terminal device includes at least two POs;

a sending unit, configured to send second indication information to an access network device, where the second indication information is used to indicate the access network device to send a paging message to the terminal device on the at least two POs.

With reference to the fifth aspect, in some implementations of the fifth aspect, the sending unit is specifically configured to:

and sending a paging message to the access network equipment, wherein the paging message is used for indicating the access network equipment to page the terminal equipment, and the paging message comprises the second indication information.

and sending an initial context establishment request message to the access network equipment, wherein the initial context establishment request message comprises the second indication information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the at least two POs include a first PO and a second PO,

the second indication information includes a first user equipment identifier and a second user equipment identifier of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, and the second user equipment identifier is used to determine the second PO.

Or, the second indication information includes a first user equipment identifier and a first offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, and the first offset value is used to determine the second PO.

Or, the second indication information includes a first user equipment identifier and a second offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, the second offset value is used to determine the second PO, and the second offset value is used to indicate an offset of a time domain position of the second PO with respect to a time domain position of the first PO.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the second offset value includes at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the first user equipment identification of the first user identity includes a temporary mobile subscriber identity, S-TMSI, of the first user identity.

With reference to the fifth aspect, in some implementations of the fifth aspect, the sending unit is further configured to send the second user equipment identifier, or the first offset value, or the second offset value to the terminal device.

In a sixth aspect, an apparatus for paging is provided to perform the method in the third aspect or any possible implementation manner of the third aspect. In particular, the apparatus comprises means for performing the method of any possible implementation manner of the third aspect or the second aspect. The device comprises a receiving unit, a determining unit and a transmitting unit.

A receiving unit, configured to receive second indication information, where the second indication information is used to indicate that the apparatus sends a paging message to a terminal device on at least two paging occasions PO within one paging cycle of a first subscriber identity of the terminal device.

A determining unit, configured to determine a first PO and a second PO in the paging cycle, where the at least two POs include the first PO and the second PO.

A sending unit, configured to send a paging message to the terminal device on the first PO and the second PO.

With reference to the sixth aspect, in some implementations of the sixth aspect, the time-domain location of the first PO is determined according to a first user equipment identity of the first user identity.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the second offset value includes at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.

With reference to the sixth aspect, in some implementations of the sixth aspect, the first user equipment identification of the first user identity includes a temporary mobile subscriber identity, S-TMSI, of the first user identity.

With reference to the sixth aspect, in some implementations of the sixth aspect, the receiving unit is specifically configured to:

receiving a paging message, where the paging message is used to instruct the first access network device to page the first subscriber identity of the terminal device, and the paging message includes the second indication information.

receiving the paging message from a core network device.

receiving the paging message from a second access network device, the second access network device being an access network device that maintains a context for the first subscriber identity of the terminal device.

receiving an initial context setup request message from the core network device, where the initial context setup request message includes the second indication information.

With reference to the sixth aspect, in some implementations of the sixth aspect, the sending unit is further configured to:

sending a paging message to a third access network device, where the apparatus is an access network device that stores a context of the first user identity of the terminal device, the paging message is used to instruct the third access network device to page the first user identity of the terminal device, and the paging message includes the second instruction information.

With reference to the sixth aspect, in some implementations of the sixth aspect, the second indication information includes a first user equipment identifier and a second user equipment identifier of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO and the second user equipment identifier is used to determine the second PO. Or

With reference to the sixth aspect, in some implementations of the sixth aspect, the second offset value includes a radio frame offset value, or at least one of a subframe offset value and a paging frame offset value.

In a seventh aspect, an embodiment of the present application provides a paging apparatus, including: a memory and a processor. Wherein the memory is configured to store instructions and the processor is configured to execute the instructions stored by the memory, and when the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any one of the first to third aspects or any possible implementation manner of any one of the aspects.

In an eighth aspect, the present application provides a computer-readable medium for storing a computer program comprising instructions for performing the method of any one of the first to third aspects or any possible implementation manner of any one of the first to third aspects.

In a ninth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to implement the method of any one of the first to third aspects or any possible implementation manner of any one of the aspects.

A tenth aspect provides a chip, including a processor and a communication interface, where the processor is configured to invoke and execute instructions from the communication interface, and when the processor executes the instructions, implement the method in any one of the first to third aspects or any possible implementation manner of any one aspect.

Optionally, the chip may further include a memory having instructions stored therein, and the processor may be configured to execute the instructions stored in the memory or derived from other instructions. When executed, the instructions are for implementing a method in any one of the first to third aspects described above or any possible implementation of any one of the aspects.

In an eleventh aspect, there is provided a communication system comprising means having functions to implement the methods and various possible designs of the first aspect, means having functions to implement the methods and various possible designs of the second aspect, and means having functions to implement the methods and various possible designs of the third aspect.

Drawings

Fig. 1 shows a schematic diagram of an application scenario of an embodiment of the present application.

Fig. 2 shows a schematic diagram of another application scenario of the embodiment of the present application.

Fig. 3A shows a schematic diagram of the passive mode of the terminal device.

Fig. 3B shows a schematic diagram of the DSDS mode of the terminal device.

Fig. 3C shows a schematic diagram of the DSDA mode of the terminal device.

Fig. 4 shows an exemplary flow diagram of a network device initiating paging of a terminal device.

Fig. 5 shows an example of a paging cycle of a terminal device according to an embodiment of the present application.

Fig. 6 is a schematic flow chart diagram illustrating a method of paging in an embodiment of the present application.

Fig. 7 is a schematic flow chart of another paging method provided in the embodiment of the present application.

Fig. 8 is a schematic flow chart of another paging method provided in the embodiment of the present application.

Fig. 9 shows an example of a paging cycle of a terminal device according to an embodiment of the present application.

Fig. 10 is a schematic flow chart of another paging method provided in the embodiment of the present application.

Fig. 11 is a schematic diagram of an apparatus for wireless communication according to an embodiment of the present application.

Fig. 12 is a schematic structural diagram of a terminal device provided in the present application.

Fig. 13 is a schematic structural diagram of an access network device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: for example: global system for mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS), Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, fifth generation (5G) or new radio systems (NR), and the like.

The terminal device in the embodiment of the present application may also be referred to as: user Equipment (UE), Mobile Station (MS), Mobile Terminal (MT), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device, etc.

The terminal device may be a device providing voice/data connectivity to a user, e.g. a handheld device, a vehicle mounted device, etc. with wireless connection capability. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote operation (remote local supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in city (city), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (wireless local) phone, a personal digital assistant (WLL) station, a handheld personal communication device with wireless communication function, a wireless terminal in industrial control (industrial control), a wireless terminal in transportation security (personal control), a wireless terminal in city (smart home), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (personal digital assistant (PDA) phone, a wireless local communication device with wireless communication function, a wireless communication device, a, A computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like, which are not limited in this embodiment of the present application.

By way of example and not limitation, in the embodiments of the present application, a wearable device may also be referred to as a wearable smart device, which is a generic term for intelligently designing daily wearing and developing wearable devices, such as glasses, gloves, watches, clothing, shoes, and the like, by applying wearable technology. 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 for physical sign monitoring, smart jewelry and the like.

In addition, in the embodiment of the present application, the terminal device may also be a terminal device in an internet of things (IoT) system, where IoT is an important component of future information technology development, and a main technical feature of the present application is to connect an article with a network through a communication technology, so as to implement an intelligent network with interconnected human-computer and interconnected objects.

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.

The access network device in this embodiment may be a device for communicating with a terminal device, and the access network device may also be referred to as an access device or a radio access network device, and may be an evolved NodeB (eNB) or eNodeB in an LTE system, or may be a wireless controller in a Cloud Radio Access Network (CRAN) scene, or the access device may be a relay station, an access point, a vehicle-mounted device, a wearable device, an access device in a 5G network, or a network device in a PLMN network that is evolved in the future, or may be an Access Point (AP) in a WLAN, or may be a gNB in a new radio, NR system.

In addition, in this embodiment, the access network device is a device in the RAN, or in other words, a RAN node that accesses the terminal device to the wireless network. For example, by way of example and not limitation, as access network devices, mention may be made of: a gbb, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP), etc. In one network configuration, a network device may include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node (CU-CP node) and a user plane CU node (CU-UP node), and a RAN device of a DU node.

The access network device provides service for a cell, and a terminal device communicates with the access network device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the access network device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell (small cell), where the small cell may include: urban cell (metro cell), micro cell (microcell), pico cell (pico cell), femto cell (femto cell), etc., and these small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission service.

In the embodiment of the application, the core network device may be connected with the access network device, so that the terminal device can communicate with the core network device through the access network device. Illustratively, in the core network device, the following network elements or functions may be included:

access Management Function (AMF): the access management module is mainly responsible for access and mobility control, including Registration Management (RM) and Connection Management (CM), access authentication and access authorization, reachability management, mobility management, and the like.

User Plane Function (UPF): the method mainly provides user plane support, including PDU session and data network connection point, data packet routing and forwarding, data packet detection and user plane policy execution, QoS processing for user plane, downlink data packet caching and downlink data notification triggering, etc.

Packet Control Function (PCF): mainly comprises a policy control function, which comprises supporting a unified policy framework to monitor network behaviors and providing policy rules for a control plane to execute.

Authentication service function (AUSF): it is mainly responsible for providing security related functions such as: authentication, etc.

Unified Data Management (UDM): the functions related to authentication and authorization of the responsible user specifically include: authentication credential processing, user identity processing, subscription information management, access authorization and the like.

Fig. 1 shows a schematic diagram of an application scenario of an embodiment of the present application. Fig. 1 includes an access network device, a core network device, and a terminal device. Wherein the access network device operates in an evolved universal mobile telecommunications system terrestrial radio access (E-UTRA) system, or in an NR system, or in a next generation communication system or other communication systems, for example. The core network device operates, for example, in an E-UTRA system, or in an NR system, or in a next generation communication system or other communication systems. In fig. 1, for example, the core network device operates in a 5G core network (5GC), the core network device and the access network device may communicate via an NG interface, and the access network device and the terminal device may communicate via a Uu interface. In this embodiment of the present application, one access network device may serve multiple terminal devices, fig. 1 only illustrates one terminal device, and one core network device may also serve multiple access network devices, and fig. 1 only illustrates one access network device.

Fig. 2 shows a schematic diagram of another application scenario of the embodiment of the present application. Fig. 2 includes an access network device 1, an access network device 2, a core network device 1, a core network device 2, and a terminal device. Fig. 2 illustrates an example in which the access network is a Radio Access Network (RAN), the core network device and the access network device may communicate via an NG interface, and the access network device may communicate via an Xn interface. In addition, the access network equipment and the terminal equipment can communicate through a Uu interface. Wherein the two access network devices operate in an evolved universal mobile telecommunications system terrestrial radio access (E-UTRA) system, or in an NR system, or in a next generation communication system or other communication systems, for example. The two core network devices operate, for example, in an E-UTRA system, or in an NR system, or in a next generation communication system or other communication systems.

The access network device in fig. 1 or fig. 2 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. Similarly, the core network device corresponds to different devices in different systems, for example, the core network device may correspond to a Mobility Management Entity (MME) in a 4G system, and correspond to a core network device in a 5G system, for example, an AMF in the 5G system. Certainly, the technical solution provided in the embodiment of the present application may also be applied to a future mobile communication system, so that the access network device in fig. 1 or fig. 2 may also correspond to an access network device in the future mobile communication system, and the core network device may also correspond to a core network device in the future mobile communication system. In fig. 1 or fig. 2, the access network device is taken as a base station as an example, and actually, with reference to the foregoing description, the access network device may also be a RSU or the like.

In the embodiment of the application, the terminal device supports at least one user identity, for example, a first user identity and/or a second user identity. Here, "user identity" (e.g., first user identity or second user identity, etc.) is a logical concept. For example, the "subscriber identity" may correspond to a SIM card or subscriber information or a virtual SIM card or subscriber identity (e.g., International Mobile Subscriber Identity (IMSI) or Temporary Mobile Subscriber Identity (TMSI), etc.). From the network side perspective, different "user identities" logically correspond to different communication entities served by the network side, such as terminal devices in 4G and 5G systems. For example, a terminal device supporting two user identities may be regarded as two communication entities for the network side. For another example, when the "user identity" corresponds to the SIM card or the subscriber information, the network side may identify two terminal devices supporting different SIM cards or different subscriber information as two different communication entities, and may also identify the same terminal device supporting multiple different SIM cards or multiple subscriber information as multiple different communication entities, even though in practice, the terminal device supporting multiple different SIM cards or multiple subscriber information is only one physical entity.

For example, the SIM card may be understood as a key for the terminal device to access the mobile network, and for convenience of description, the SIM card and its evolution are collectively referred to as the SIM card in the embodiments of the present application. For example, the SIM card may be an identification card of a global system for mobile communications (GSM) digital mobile phone user, which is used for storing an identification code and a secret key of the user and supporting authentication of the user by the GSM system. For another example, the SIM card may be a Universal Subscriber Identity Module (USIM), which may also be referred to as an upgraded SIM card. In the embodiment of the present application, a SIM card corresponding to a "subscriber identity" is mainly taken as an example for description.

In the embodiment of the present application, the terminal device is installed with a SIM card, and the terminal device is considered to support a subscriber identity. For example, a terminal device equipped with two SIM cards supports two subscriber identities. That is, the SIM card and the subscriber identity are in a one-to-one relationship.

As an example, more and more smart phones currently support the simultaneous insertion of two SIM cards, e.g., one for private services and one for work; alternatively, one SIM card is used for data services and the other SIM card is used for voice services. The two SIM cards in one mobile phone can belong to the same mobile operator or different mobile operators; the systems may belong to the same system (the systems include NR, LTE, Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA) 2000, GSM, etc.), or may belong to different systems.

According to the difference of the transceiving capacity of the terminal equipment, the terminal equipment with the double SIM cards can have one of the following three modes:

1. passive (passive) mode, alternatively also referred to as DSSS mode: although two SIM cards can be inserted, only one can be used at a time.

Fig. 3A is a schematic diagram of the passive mode. In fig. 3A, two SIM cards, USIM1 and USIM2, are taken as examples. At time 1, USIM1 operates (or is in RRC connected state (connected)), that is, USIM1 can transmit and receive data, at which time USIM2 cannot be used; alternatively, at time 2, USIM2 operates (or is in an RRC connected state), i.e., USIM2 can transceive data, at which time USIM1 cannot be used.

2. DSDS mode: two SIM cards share a set of transceivers, and for the idle (idle) state, the transceivers need to listen to paging messages of the two cards. For example, the transceiver may listen in a Time Division Multiplexing (TDM) manner.

Referring to fig. 3B, a diagram of the DSDS mode is shown. In fig. 3B, two SIM cards, USIM1 and USIM2, are taken as examples. At time 1, USIM1 operates (or is in RRC connected state), that is, USIM1 can transmit and receive data, and USIM2 may be in idle state or inactive state (inactive); alternatively, USIM2 operates (or is in RRC connected state), that is, USIM2 may transceive data, while USIM1 may be in idle state or inactive state. The inactive state, which may also be referred to herein as the deactivated state, or the deactivated dynamic state, or the like.

3. DSDA mode: the two SIM cards use respective transceivers. The two SIM cards can be in RRC connected state at the same time, i.e. the terminal device can receive and send data of the two SIM cards at the same time.

Fig. 3C is a schematic diagram of a DSDA pattern. In fig. 3C, two SIM cards, USIM1 and USIM2, are taken as examples. When the USIM1 operates (or enters an RRC connected state), that is, the USIM1 transceives data, the USIM2 may also operate, that is, the USIM2 and the USIM1 may be in an RRC connected state at the same time.

The above-mentioned 3 Radio Resource Control (RRC) states of the terminal device are described below. As described above, the 3 RRC states are: RRC connected state (connected state), RRC idle state (idle state), and inactive state (inactive state). The inactive state may also be referred to as a deactivated dynamic state, a deactivated state, or the like.

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 idle state, an RRC connection establishment procedure needs to be initiated.

Deactivation dynamics: the terminal device has previously entered the RRC connected state and the base station then releases the RRC connection, but the base station maintains the context of the terminal device. If the terminal device needs to dynamically re-enter the RRC connected state from the deactivation, an RRC connection recovery procedure (alternatively referred to as an RRC connection re-establishment procedure) needs to be initiated. 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.

When the terminal equipment has no data transmission, the terminal equipment enters an idle state or is deactivated dynamically in order to save power. In this state, the terminal device needs to wake up at a certain location at a certain period, and monitor whether the network pages the terminal device. The wake-up position of the terminal device is a Paging Occasion (PO). Referring now to fig. 4, an exemplary flow chart for a network device initiating paging for a terminal device is shown.

And S11, the downlink data of the terminal equipment reaches the core network equipment.

S12, the core network device sends a paging message to the base station, and the base station receives the paging message from the core network device.

For an idle terminal device, when there is downlink data arriving at a core network device (that is, a network needs to send data to the terminal device), the core network sends a paging message to multiple access network devices in a registration area of the terminal device, so as to trigger multiple base stations to send the paging message at the air interface, where fig. 4 only uses one of the access network devices as an example.

Wherein the paging message may include a user equipment identification (UE ID). As an example, the UE ID may be an S-temporary mobile subscriber identity (S-TMSI) allocated by the core network device to the terminal device. Optionally, the paging message may further include a paging cycle (which may be denoted as T1) allocated by the core network to the terminal device. For example, the paging cycle may be a Discontinuous Reception (DRX) cycle, but the embodiment of the present application is not limited thereto.

And S13, the access network equipment determines the paging occasion of the terminal equipment.

For the terminal device in the inactive state, steps S11 and S12 are not included, and when downlink data arrives at the access network device, the access network device may determine to initiate paging for the terminal device and determine a paging occasion.

In some implementations, a cell-level paging cycle (which may be denoted as T2) may be broadcast in the system message of the cell broadcast by the base station. In addition, for the terminal device in the inactive state, the access network device may allocate a paging cycle (which may be denoted as T3) to the terminal device.

As an example, the access network device may determine the paging occasion PO of the terminal device based on the UE ID, the paging cycle, and the paging configuration parameter of the cell. Wherein, for the terminal device in idle state, the paging cycle for determining PO is the cycle with the smaller value (which may be denoted as T) of T1 and T2, and for the terminal device in inactive state, the paging cycle for determining PO is the cycle with the smallest value (which may be denoted as T) of T1, T2 and T3.

As a specific example, the cell paging configuration parameters broadcasted in the system information of the cell may be as follows:

here, the defaultPagingCycle, i.e. T2, can derive a Paging Frame (PF) offset (which may be referred to as PF _ offset) based on the nandpargingframeoffset, and N, where N is used to identify the number of PFs in a paging cycle, and Ns indicates the number of POs in a paging frame.

The following describes a procedure of determining a paging occasion PO of the terminal device, taking the NR system as an example.

First, a paging frame PF in which the PO of the terminal device is located may be determined. As an example, the PF where PO is located can be determined by the following formula (1).

(SFN+PF_offset)mod T＝(T div N)*(UE_ID mod N) (1)

Wherein, SFN represents system frame number (system frame number) for representing frame number of frame where PF is located, PF _ offset represents offset of PF, T represents paging cycle of terminal device, unit is frame, N represents number of PF in one paging cycle, T div N represents that there is one PF per (T div N) consecutive frames, and UE _ ID is S-TMSI mode 1024.

The values of PF _ offset, T, N may all be from the current cell broadcast, or related to the parameters of the current cell broadcast.

After determining the PF, the time domain location of the PO of the terminal device in the PF may be determined. In the embodiment of the present application, the time domain position of the PO may also be referred to as a position of the PO. Illustratively, the process of determining the position of a PO in a PF can be divided into the following steps a and b.

Step a, acquiring the number i _ s of PO by the following formula (2):

i_s＝floor(UE_ID/N)mod Ns (2)

and b, acquiring the time domain position of the PO according to the number of the PO. After the PO number is obtained, the time domain position of the PO of the terminal device may be obtained according to the configuration of the search space of the paging of the current cell.

In the LTE system, a paging frame PF in which a paging occasion PO of a terminal device is located may be determined according to the following formula (3):

SFN mod T＝(T div N)*(UE_ID mod N) (3)

after determining the PF, the process of determining the position of the PO of the terminal device in the PF is similar to the NR system, and is not described here again.

Similarly, the terminal device may also determine the time domain location of the PO based on the UE ID, the paging cycle, and the cell paging configuration parameters applicable to all terminal devices in the current cell.

S14, the access network equipment sends the paging message through the air interface, and the terminal equipment receives the paging message from the access network equipment.

The access network equipment sends a paging message at the air interface. If the access network device configures a radio access network-based notification area (RNA), the access network device may send a paging at a paging occasion of the terminal device in a cell indicated by the RNA. If there are cells belonging to other access network devices in the cells indicated by the RNA, the access network device may send a paging message to the other access network devices, and the other access network devices may send the paging message through an air interface at the paging occasion of the terminal device.

The paging message may carry a paging identity (UE paging identity), so that a terminal device receiving the paging message can identify whether the paging message is sent to the terminal device.

The terminal device may monitor a Physical Downlink Control Channel (PDCCH) on the determined PO to receive the paging message. After receiving the paging message and determining that the terminal device is paged, the terminal device initiates a new RRC connection establishment procedure or an RRC connection recovery procedure on the currently camped cell to enter an RRC connected state.

As can be seen from the above description, the parameters for determining the time domain location of the PO of the terminal device include the UE ID, the paging cycle, and the cell paging configuration parameters of the current cell. When two SIM cards are inserted into a terminal device, the two SIM cards may reside in different cells, and the terminal device may register in different networks with two user identities corresponding to the two SIM cards, respectively. For example, the terminal device registers in a first network with a first subscriber identity corresponding to the first SIM card, and the terminal device registers in a second network with a second subscriber identity corresponding to the second SIM card. After the registration is completed, the first network allocates the user equipment identifier of the first user identity to the terminal equipment of the first user identity, and the second network allocates the user equipment identifier of the second user identity to the terminal equipment of the second user identity. The terminal equipment determines the time domain position of the PO of the first user identity in the paging cycle of the first user identity, and determines the time domain position of the PO of the second user equipment in the paging cycle of the second user identity.

For a terminal device supporting a first subscriber identity and a second subscriber identity, there may be a case where the time domain position of the PO of the first subscriber identity overlaps (including completely overlaps and partially overlaps) with the time domain position of the PO of the second subscriber identity. At this time, for the terminal equipment in the DSDS mode, since the terminal equipment can only monitor the paging message of one user identity at the PO location, if the paging messages are sent at both PO locations of the two user identities at this time, the terminal equipment cannot receive the paging message of the other user identity, that is, the paging collision occurs between the first user identity and the second user identity, which causes the problem of missed call and the like due to the paging loss of one user identity.

Alternatively, it may be the case that although the time-domain position of the PO of the first subscriber identity does not overlap the time-domain position of the PO of the second subscriber identity, the two are closely spaced. In this case, since the interval between the two POs is small, the terminal device may not have time to adjust the radio frequency after receiving the paging message of the user identity on the PO of one user identity, and may not receive the paging message on the PO of the other user identity, and at this time, the first user identity and the second user identity may also have paging collision, which may cause paging loss of one user identity, and further cause a call missing problem.

In view of this, the technical solutions of the embodiments of the present application are provided. In this embodiment, the terminal device supports the first subscriber identity, and includes the first PO and the second PO in one paging cycle of the first subscriber identity, that is, in the prior art, one subscriber identity has only one PO for the subscriber identity in one paging cycle, but in this embodiment, the first subscriber identity includes two POs for the first subscriber identity in one paging cycle. The first user identity may be understood as a user identity that the terminal device has after the SIM card 1 is installed. The access network device may send a paging message for the first subscriber identity of the terminal device on both the first PO and the second PO. The terminal device may select to listen to the paging message of the first subscriber identity on the first PO or the second PO with the first subscriber identity. Therefore, in the embodiment of the present application, the first PO and the second PO are set in one paging cycle of the first subscriber identity of the terminal device, and the access network device sends the paging message on both the first PO and the second PO, so that when the terminal device monitors the paging message with the first subscriber identity, the terminal device can select to monitor the paging message on the first PO or monitor the paging message on the second PO, thereby helping to avoid paging loss, and further helping to avoid a missed call problem caused by the paging loss.

In some optional embodiments, the terminal device further supports the second subscriber identity, and includes a third PO in one paging cycle of the second subscriber identity. The second user identity may be understood as a user identity that the terminal device has after the SIM card 2 is installed. When the paging conflict occurs between the first user identity and the second user identity, the terminal device monitors the paging message of the second user identity on a third PO with the second user identity, and the terminal device monitors the paging message of the first user identity on a PO which does not conflict with the third PO with the first user identity.

In some implementations, the terminal device may only need to listen to one PO even if there are two POs in one paging cycle for the first subscriber identity. In this way, although two POs are included in one paging cycle of the first subscriber identity of the terminal device, the terminal device always needs to wake up to listen to the paging message only in one PO of the paging cycle, that is, each subscriber identity of the terminal device only listens to the paging message once in its corresponding paging cycle, which helps the terminal device to save power.

For example, when the time domain position of the first PO in the paging cycle of the first subscriber identity overlaps with the time domain position of the third PO in the paging cycle of the second subscriber identity or has a small interval (that is, the first PO and the third PO collide), the terminal device monitors the paging message of the second subscriber identity on the third PO with the second subscriber identity, the terminal device monitors the paging message of the first subscriber identity on the second PO with the first subscriber identity, and the terminal device does not monitor the paging message of the first subscriber identity on the first PO with the first subscriber identity. That is, when a conflict occurs, since the first subscriber identity has two POs in one paging cycle, the paging of the second subscriber identity can be monitored preferentially, and the paging of the first subscriber identity is monitored on the other PO of the first subscriber identity that is not in conflict, which can ensure that the paging messages of both subscriber identities are not lost.

For another example, when the time domain position of the second PO in the paging cycle of the first subscriber identity overlaps with the time domain position of the third PO in the paging cycle of the second subscriber identity or has a small interval (that is, the first PO and the third PO collide), the terminal device monitors the paging message of the second subscriber identity on the third PO with the second subscriber identity, the terminal device monitors the paging message of the first subscriber identity on the first PO with the first subscriber identity, and the terminal device does not monitor the paging message of the first subscriber identity on the second PO with the first subscriber identity.

Fig. 5 shows an example of a paging cycle of a terminal device according to an embodiment of the present application. As an example, the terminal device may install a SIM card 1 and a SIM card 2, wherein the terminal device has a first subscriber identity after the SIM card 1 is installed and a second subscriber identity after the SIM card 2 is installed. As shown in fig. 5, the first subscriber identity corresponding to the SIM card 1 includes two POs (i.e. a first PO and a second PO) in one paging cycle, where the first PO may be labeled as "1", the second PO may be labeled as "2", and the second subscriber identity corresponding to the SIM card 2 includes one PO (i.e. a third PO) in one paging cycle, which is labeled as "1". Wherein a time domain position of a first PO in a paging cycle of the first subscriber identity overlaps with a time domain position of a third PO in a paging cycle of the second subscriber identity. At this point, the terminal device may listen for the paging message on the PO labeled "2" with the first subscriber identity (due to the overlap, not listen for the paging message on the PO labeled "1" with the first subscriber identity) and listen for the paging message on the PO labeled "1" with the second subscriber identity.

For another example, when the first subscriber identity and the second subscriber identity do not conflict with each other, the terminal device monitors the paging message of the first subscriber identity on any PO in the paging cycle with the first subscriber identity, and monitors the paging message of the second subscriber identity on a third PO in the paging cycle with the second subscriber identity. For example, when the time domain position of the first PO in the paging cycle of the first subscriber identity and the time domain position of the third PO in the paging cycle of the second subscriber identity are not overlapped and have a larger interval, and the time domain position of the second PO in the paging cycle of the first subscriber identity and the time domain position of the third PO in the paging cycle of the second subscriber identity are not overlapped and have a larger interval, the terminal device monitors the paging message of the first subscriber identity on the PO that appears earlier in the first PO and the second PO with the first subscriber identity, or the terminal device monitors the paging message of the first subscriber identity on the PO calculated according to the UE ID with the first subscriber identity, and the terminal device monitors the paging message of the second subscriber identity on the third PO with the second subscriber identity.

It should be noted that, in addition to the first PO and the second PO, one paging cycle of the first subscriber identity may also include other POs, such as a fourth PO, which is not limited in this embodiment of the application. The embodiment of the present application will be described mainly based on that two POs are included in the paging cycle, and when more than two POs are included in the paging cycle, the specific implementation thereof may refer to the related description that two POs are included in the paging cycle, and some simple adaptations may need to be made, but also fall within the scope of the embodiment of the present application.

It is understood that it may be determined which SIM card of the terminal device includes at least two POs within the paging cycle based on the communication system. For example, considering backward compatibility, it is easier to introduce the mechanism in the NR communication system, so at least two POs within the paging cycle of the subscriber identity corresponding to the SIM card residing in the NR cell can be preferentially selected. Or in some alternative embodiments, the method may be implemented by a terminal device, which is not limited in this application embodiment.

In some possible implementations, one of the two POs in the paging cycle of the first subscriber identity, for example, the first PO, may be determined according to the first ue identity of the first subscriber identity. For example, the first ue identity may be a ue identity assigned by the network to the terminal device when the terminal device is registered in the network with the first subscriber identity. Illustratively, the first PO may be determined according to the procedure for determining a PO as described hereinabove, and the first user equipment identity.

In some optional embodiments, the first user equipment is identified as a temporary mobile subscriber identity, S-TMSI, of the first user identity.

In one possible implementation, the other PO of the two POs, such as the second PO, may be determined based on a second ue identity of the first ue, wherein the second ue identity is different from the first ue identity. For example, the second ue identity may be a ue identity different from the first ue identity, which is additionally allocated to the terminal device by the core network device (i.e. the first ue identity is allocated to two ue identities by the core network device). Illustratively, the second PO may be determined according to the procedure for determining a PO as described above, and the second user equipment identity.

In some optional embodiments, the second user equipment is identified as a further temporary mobile subscriber identity, S-TMSI, of the first user identity.

In another possible implementation, the other of the two POs, e.g. the second PO, may be determined based on the first user equipment identity and the first offset value. The first offset value may be used to indicate an offset of a third ue id corresponding to the second PO with respect to the first ue id. That is, the offset of the first offset value may be performed on the first ue identity to obtain a third ue identity, and then the second PO may be determined according to the third ue identity. In some specific examples, the first offset value may be "1", or "2", or others. Illustratively, the second PO may be determined according to the procedure for determining a PO as described hereinabove, and the third user equipment identity.

It should be noted that, here, the third ue identity is not the ue identity of the first ue identity, but is the ue identity obtained by offsetting the ue identity of the first ue identity.

In another possible implementation, the other PO of the two POs, for example, the second PO, may be determined according to the time domain position of the first PO and a second offset value, where the second offset value is used to indicate an offset of the time domain position of the second PO from the time domain position of the first PO.

As an example, the second offset value may be at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value. For example, when the second offset value is 1 radio frame, the second PO is in the next radio frame after the time domain position of the first PO, and the position of the second PO in the next radio frame is the same as the position of the first PO in the radio frame where the second PO is located. For another example, when the second offset value is 1 paging frame, the second PO is in the next paging frame after the time domain location of the first PO, and the location of the second PO in the next paging frame is the same as the location of the first PO in the paging frame where it is located. For another example, when the second offset value is 1 subframe, the second PO is in the next subframe after the time domain position of the first PO, and the position of the second PO in the next subframe is the same as the position of the first PO in the subframe where the second PO is located.

For another example, when the second offset value is 1 radio frame and 1 subframe, the second PO is in the next radio frame after the time domain position of the first PO, and the time domain position of the second PO in the next radio frame is offset by 1 subframe from the time domain position of the first PO in the radio frame.

It should be further noted that, in the embodiment of the present application, it should be avoided that the time domain positions of both POs in the paging cycle of the first subscriber identity conflict with the time domain positions of POs in the paging cycle of the second subscriber identity.

For example, in a case where the paging cycle of the first subscriber identity is an integer multiple of the paging cycle of the second subscriber identity, such as the paging cycle of the first subscriber identity is 64 radio frames and the paging cycle of the second subscriber identity is 32 radio frames, even if two POs are included in the paging cycle of the first subscriber identity, a situation may occur where the time domain positions of the two POs just overlap with the time domain positions of the POs in two consecutive paging cycles of the second subscriber identity.

In this case, in a possible manner, the terminal device may send, to the core network device, auxiliary information indicating a parameter of the first subscriber identity of the terminal device for determining the paging occasion and/or a parameter of the second subscriber identity of the terminal device for determining the paging occasion, with one subscriber identity (e.g., the first subscriber identity). After receiving the auxiliary information, the core network device may determine the second user equipment identifier, or the first offset value, or the second offset value according to the auxiliary information. Therefore, the core network device can ensure that the second PO derived based on the second ue identity, or the first offset value, or the second offset value no longer conflicts with the PO of the second ue identity based on the auxiliary information, thereby avoiding the problem of the first ue identity and the second ue identity that the paging message is lost.

For example, when the terminal device sends the auxiliary information to the core network device with the first subscriber identity, the auxiliary information may be one or more of the following information:

a paging cycle for the first subscriber identity;

a paging resource configuration of a cell in which the first ue is located, such as one or more of PF _ offset, T, N;

a paging cycle for the second subscriber identity;

a paging resource configuration of a cell in which the second ue is located, such as one or more of PF _ offset, T, N;

S-TMSI of the second subscriber identity.

For another example, when the terminal device sends the auxiliary information to the core network device with the second subscriber identity, the auxiliary information may be one or more of the following information:

a paging cycle for the first subscriber identity;

a paging cycle for the second subscriber identity;

S-TMSI of the first subscriber identity.

In some alternative embodiments, the paging cycle of the second subscriber identity may also include two POs, such as a third PO and a fourth PO. In this case, in order to avoid a situation that the time domain positions of the two POs in the paging cycle of the first subscriber identity overlap or are spaced less apart from the time domain positions of the two POs in the paging cycle of the second subscriber identity, in a case where the first PO in the paging cycle of the first subscriber identity is determined according to the user equipment identity #1 of the first subscriber identity, the second PO may be determined according to "user equipment identity #1+ the first offset value", and in a case where the third PO in the paging cycle of the second subscriber identity is determined according to the user equipment identity #2 of the second subscriber identity, the fourth PO may be determined according to "user equipment identity # 2-the first offset value". Therefore, the first PO and the second PO of the first user identity can be staggered with the third PO and the fourth PO of the second user identity as much as possible, and the paging conflict between the first user identity and the second user identity is avoided.

Illustratively, the first PO, the second PO, the third PO, and the fourth PO can be determined according to the process for determining a PO described above.

It should be understood that in the embodiment of the present application, one, two, or more POs may be included in one paging cycle of the second subscriber identity of the terminal device. When two or more POs are included in one paging cycle of the second subscriber identity, the access network device may send a paging message on both of the two or more POs, and the terminal device may select to listen to the paging message on one of the POs in the second subscriber identity. Therefore, the method and the device for paging the multiple user identities of the terminal equipment can help to reduce the probability of paging conflict of the multiple user identities of the terminal equipment.

It should also be understood that, in this embodiment of the present application, a terminal device may further include more than two SIM cards, and then the corresponding terminal device also supports more than two user identities, for example, the terminal device supports three user identities, four user identities, or more user identities, and may be registered in more than two networks, where each user identity may be registered in one network.

The technical scheme provided by the embodiment of the application is described below with reference to the accompanying drawings. The embodiment of the application mainly takes the example that the terminal device supports two user identities, such as a first user identity and a second user identity. The embodiment of the present application will be described mainly based on that the terminal device supports two user identities, and when the terminal device supports more than two user identities, the specific implementation thereof may refer to the description that the terminal device supports two user identities, and some simple adaptations may need to be made, but the embodiment of the present application is also within the protection scope of the embodiment of the present application.

When the user identity of the terminal device is the first user identity, from the perspective of the network side, the terminal device may be understood as a user (from the perspective of the protocol, it is a terminal device, for example, referred to as a first user); when the user identity of the terminal device is the second user identity, the terminal device may be understood as a further user (e.g. referred to as the second user) from the network side perspective. The terminal device may be registered with the first network with a first subscriber identity and with the second network with a second subscriber identity. In the embodiment of the present application, the terminal device supports one user identity, which can also be described as that the terminal device has one user identity. Similarly, the terminal device supports two user identities, which can also be described as the terminal device having two user identities.

In addition, it should be noted that, in the embodiments of the present application, the "terminal device with the first user identity" may be understood as "the first user identity of the terminal device", and the two descriptions are the same and may be interchanged. Similarly, the "terminal device of the second user identity" may be understood as "second user identity of the terminal device", and the two descriptions are the same and may be interchanged.

The technical solution of the present application may be applied to a wireless communication system, for example, the communication system shown in fig. 1 or the communication system shown in fig. 2. Three communication devices in a wireless communication system may have a wireless communication connection relationship therebetween, and one of the three communication devices may correspond to the terminal equipment shown in fig. 1 or fig. 2, or may be a chip configured in the terminal equipment; another communication device of the three communication devices may correspond to the access network device shown in fig. 1 or fig. 2, or may be a chip configured in the access network device; another communication device of the three communication devices may correspond to the core network device shown in fig. 1 or fig. 2, or may be a chip configured in the core network device.

It should be understood that in the embodiments illustrated herein, the first, second and various numerical references are only used for descriptive convenience of distinction and are not intended to limit the scope of the embodiments of the present application. E.g. to distinguish different user identities, different POs, different access network devices, etc.

It should also be understood that in the embodiments illustrated herein, "predefined" may be implemented by pre-saving a corresponding code, table, or other means that can be used to indicate related information in a device (e.g., including a terminal device and a network device), and the present application is not limited to the specific implementation manner thereof.

It should also be understood that references to "storing" in embodiments of the present application may refer to storing in one or more memories. The one or more memories may be provided separately or integrated in the encoder or decoder, the processor, or the communication device. The one or more memories may also be provided separately, with a portion of the one or more memories being integrated into the decoder, the processor, or the communication device. The type of memory may be any form of storage medium and is not intended to be limiting of the present application.

It should also be understood that the "protocol" in the embodiment of the present application may refer to a standard protocol in the communication field, and may include, for example, an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in the present application.

Hereinafter, without loss of generality, the embodiment of the present application will be described in detail by taking a paging procedure of a terminal device as an example. It is to be understood that any terminal device or chip configured in the terminal device in the wireless communication system may perform paging based on the same method, any access network device or chip configured in the access network device in the wireless communication system may perform paging based on the same method, and any core network device or chip configured in the core network device in the wireless communication system may perform paging based on the same method. This is not limited in this application.

Fig. 6 is a schematic flowchart of a paging method according to an embodiment of the present application. The method of paging shown in fig. 6 includes steps 610 to 660. In the embodiment of the application, the terminal device supports at least two user identities, such as a first user identity and a second user identity.

It should be noted that, in the embodiment of the present application, a terminal device interacts with a core network device and an access network device by using a first user identity, and a paging cycle of the first user identity includes at least two POs, which is taken as an example to describe a paging technical scheme in the embodiment of the present application. The core network device interacting with the terminal device of the first user identity is the core network device in the network in which the terminal device is registered with the first user identity. However, the embodiment of the present application is not limited to this, for example, the terminal device may also interact with the core network device and the access network device with the second user identity, and a paging cycle of the second user identity includes at least two POs. The core network device interacting with the terminal device of the second user identity is the core network device in the network in which the terminal device is registered with the second user identity. Specifically, the process of the terminal device interacting with the network device in the second user identity may refer to the related description of the process of the terminal device interacting with the network device in the first user identity, and some simple adaptations may be required, but are also within the scope of the embodiments of the present application.

Optionally, in step 610, the terminal device sends the first indication information to the core network device with the first user identity. Correspondingly, the core network equipment receives and stores the first indication information. The first indication information is used for indicating that the terminal device supports at least two user identities, or is used for indicating that the first user identity of the terminal device comprises at least two POs in one paging cycle, or is used for requesting that the first user identity of the terminal device comprises at least two POs in one paging cycle.

When the first indication information is used for indicating that the terminal equipment supports at least two user identities, the core network equipment learns that the terminal equipment supports at least two user identities after receiving the first indication information. At this time, in order to avoid paging collision of multiple user identities of the terminal device, the core network device may determine that the first user identity of the terminal device includes at least two POs in one paging cycle. Since the core network device is a core network device in a network in which the terminal device is registered with the first user identity, from the perspective of the network side, the terminal device may be understood as a user, and thus "the core network device may determine that the first user identity of the terminal device includes at least two POs in one paging cycle", which may also be described as: "the core network device may determine that at least two POs are included in one paging cycle of the terminal device". The contents indicated by the two descriptions are the same and can be replaced with each other.

In a possible case, the terminal device may send the first indication information to the core network device with the first subscriber identity when it is determined that the time domain position of the PO of the first subscriber identity overlaps with the time domain position of the PO of the second subscriber identity, or the interval is very small (i.e., the time domain positions conflict). At this time, the first indication information may also be used to indicate that paging collision occurs between at least two user identities of the terminal device. In this case, if the terminal device is in an idle state, the terminal device needs to enter an RRC connected state to transmit the first indication information.

In another possible case, when the terminal device supports at least two user identities, regardless of whether paging collision may occur between the two user identities, the terminal device sends the first indication information for indicating to the core network device that the terminal device supports at least two user identities. For example, after the terminal device is powered on, if two SIM cards are installed in the terminal device, the terminal device may send a registration request message to the core network device at a first user identity corresponding to the SIM card 1, where the registration request message may carry first indication information for indicating that the terminal device supports at least two user identities.

Optionally, the terminal device sends a registration request message to the core network device at the second user identity corresponding to the SIM card 2, where the registration request message may not carry indication information for indicating that the terminal device supports at least two user identities. That is, only one PO may be included in the paging cycle of the second subscriber identity of the terminal device at this time.

In other possible cases, the first indication information may be used to request the core network device to allocate an additional ue identity to the first ue identity of the terminal device. Wherein the additional user equipment identifies a second PO in the paging cycle used to determine the first subscriber identity.

As an example, when it is determined that paging collision may occur between at least two user identities of the terminal device, or the terminal device supports at least two user identities, the terminal device may send the first indication information to the core network device, and request the core network device to allocate an additional user device identifier to the first user identity of the terminal device. Alternatively, it may also be described that the core network device is requested to allocate an additional user equipment identifier to the terminal device. After receiving the first indication information, the core network may know that the terminal device needs at least two POs in one paging cycle, that is, it may be inferred that the terminal device supports at least two user identities, or that paging collision may occur between at least two user identities of the terminal device. At this time, in order to avoid paging collision of multiple user identities of the terminal device, the core network device may assign an additional user equipment identifier to the terminal device. As an example, the additional user equipment identity may be the second user equipment identity shown above.

In some possible implementations, the terminal device may send the first indication information to the core network device through a Non-access stratum (NAS) message. That is, the NAS message may carry the first indication information. As one example, the NAS message may be a NAS registration request message. Illustratively, the parameters constituting the NAS message may include at least one of a terminal identifier, a terminal capability, a registration type, a Protocol Data Unit (PDU) session identifier, a data network name DNN, or other parameters, for example. Wherein the registration type may include a paging conflicting registration type. That is, the registration type of the paging collision at this time may be one example of the first indication information.

In some possible implementations, the terminal device may send the first indication information to the access network device through an RRC message (e.g., an RRC setup complete message). The access network device may then send the first indication to the core network device via a communication interface between the access network device and the core network device (e.g., an N2 interface). As an example, the access network device may send an initial UE message to the core network through an N2 interface, where the initial UE message carries the first indication information.

Optionally, in step 615, the core network device may further send a second user equipment identifier, or a first offset value, or a second offset value to the terminal device. Correspondingly, the terminal device may receive the second ue identity, the first offset value, or the second offset value from the core network with the first subscriber identity.

For example, the core network device may send a NAS registration response message to the terminal device, where the NAS registration response message includes the second user equipment identifier, or the first offset value, or the second offset value.

Specifically, the second ue identity, the first offset value, and the second offset value may refer to the above description, and for brevity, are not described herein again.

And 620, the core network device sends second indication information to the access network device, where the second indication information is used to indicate the access network device to send a paging message to the terminal device on the at least two POs.

Illustratively, the at least two POs include a first PO and a second PO. Specifically, the first PO and the second PO may be as described above.

In a possible case, the second indication information may include a first ue identity and a second ue identity of a first ue identity of the terminal device, where the first ue identity is used to determine the first PO and the second ue identity is used to determine the second PO.

For example, the first PO may be determined by substituting the first user equipment identity into the above formula (1) to formula (3), and the second PO may be determined by substituting the second user equipment identity into the above formula (1) to formula (3), but the embodiment of the present application is not limited thereto.

Or, in another possible case, the second indication information includes a first user equipment identifier of a first user identity of the terminal device and a first offset value, where the first user equipment identifier is used to determine the first PO and the first offset value is used to determine the second PO. As an example, the second PO may be determined based on the first user equipment identity and the first offset value.

For example, the third ue identity (e.g. the sum or the difference between the first ue identity and the first offset value) may be obtained according to the first ue identity and the first offset value. Then, the third ue identity is substituted into the above formulas (1) to (3) to determine the second PO, but the embodiment of the present application is not limited thereto.

Or, in another possible case, the second indication information includes a first user equipment identifier and a second offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, the second offset value is used to determine the second PO, and the second offset value is used to indicate an offset of the time domain position of the second PO with respect to the time domain position of the first PO.

In some possible implementations, the second indication information may be used to indicate that the terminal device supports at least two user identities, or to indicate that the first user identity of the terminal device includes at least two POs in one paging cycle. In this way, the access network device may determine, according to the second indication information, that the paging message is sent to the terminal device on at least two POs within the paging cycle of the first subscriber identity.

Thus, when the access network device receives the second indication information, it can determine that the terminal device sends the paging message on the at least two POs according to the content in the second indication information. Further, the access network device may determine the first PO and the second PO of the at least two POs according to the content in the second indication information.

The second indication information may be explicit indication information or implicit indication information. For example, if the core network device sends the second user equipment identifier, or the first offset value, or the second offset value to the access network device, which means that the core network device sends the second indication information to the access network device, the access network device may determine that the first subscriber identity of the terminal device includes at least two POs in one paging cycle.

It should be noted that the access network device is not necessarily the access network device in step 610. For example, as the terminal device moves, the terminal device has been handed off from the cell of the access network device in step 610 to the cell of the access network device in step 620.

As an example, the core network device may send the second indication information to the access network device through a paging message, or an initial context setup request message. Specifically, it will be described in detail hereinafter.

The access network device determines 630 a first PO and a second PO.

For example, the access network device may determine the time domain locations of the first PO and the second PO according to the second indication information.

For another example, the access network device may determine the first PO in the paging cycle of the first user according to the first user equipment identifier allocated by the core network device for the first user identity of the terminal device. Further, the access network device may determine the second PO according to a first offset value or a second offset value predefined by a preset predefined (e.g., pre-stored by the access network device) or protocol.

Specifically, the process of determining the first PO and the second PO can be referred to the description above, and for brevity, the description is omitted here.

The terminal device determines 640 a first PO and a second PO.

For example, the terminal device may determine the first PO in the paging cycle of the first user according to the first user equipment identifier allocated by the core network device to the first user identity of the terminal device.

Further, the access network device may determine the second PO according to a predefined rule (for example, predefined by the terminal device), or predefined by the protocol, the first offset value, or the second ue identity received from the core network device with the first ue identity, or the first offset value, or the second offset value.

The terminal device listens for paging messages on the first PO or the second PO 650.

As an example, the terminal device listens for the paging message on which of the first or second POs of the first subscriber identity is dependent on which PO does not conflict with the third PO in the paging cycle of the second subscriber identity in the time domain location. Specifically, reference may be made to the above description, and for brevity, the description is not repeated here.

The access network device sends 660 a paging message on the first PO.

The access network device sends the paging message on the second PO 670.

Therefore, in the embodiment of the present application, in the case that the terminal device supports the first user identity and the second user identity, by setting the first PO and the second PO in one paging cycle of the first user identity of the terminal device, when the terminal device monitors the paging message with the first user identity, the PO in the paging cycle without the second user identity can be selected to monitor on the PO which conflicts in the time domain resource, so that the problem that the paging message is lost in a plurality of user identities of the terminal device can be avoided.

Fig. 7 is a schematic flow chart of another paging method provided in the embodiment of the present application. In the method shown in fig. 7, when the first subscriber identity of the terminal device is in idle state, the paging message is monitored on the first PO or the second PO.

It should be understood that fig. 7 shows steps or operations of the paging method, but these steps or operations are only examples, and other operations or variations of the respective operations in fig. 7 may also be performed by the embodiments of the present application. Moreover, the various steps in FIG. 7 may be performed in a different order presented in FIG. 7, and it is possible that not all of the operations in FIG. 7 may be performed.

701, the terminal device sends first indication information to the core network device. Correspondingly, the core network device receives the first indication information.

Specifically, step 701 may refer to the description of step 601 in fig. 6, and for brevity, will not be described herein again.

And 702, the core network equipment stores the first indication information.

Optionally, the core network device may further allocate a new user equipment identifier to the terminal device according to the first indication information, that is, the first user identity of the terminal device has two user equipment identifiers. As an example, the user equipment identity may be S-TMSI.

Optionally, 703, the core network device sends the second user equipment identifier, or the first offset value, or the second offset value to the terminal device.

In some possible implementations, the terminal device and the access network device may determine the second PO according to the first offset value and the second offset value. At this time, the core network device may not send the second ue identity to the terminal device. Optionally, the first offset value or the second offset value may also be predefined, which is not limited in this embodiment of the application.

Specifically, in step 703, the second ue identity, or the first offset value, or the second offset value may refer to the related description above, and for brevity, details are not described here again.

It should be noted that, in this embodiment of the present application, the terminal device sends the first indication information to the core network device in the RRC connected state. And after the terminal equipment sends the first indication information, the terminal equipment enters an idle state from an RRC connection state.

The core network device determines 704 that the terminal device needs to be paged.

As an example, the core network may determine that the terminal device needs to be paged when downlink data of the terminal device arrives.

It should be noted that, for the idle-state terminal device, the paging to the terminal device is triggered by the core network device. After the core network device determines that the terminal device needs to be paged, a paging message is sent to the access network device, that is, step 705 is executed.

705, the core network device sends a paging message to the access network device, where the paging message carries the second indication information. Correspondingly, the access network equipment receives the second indication information. Since the paging message is sent over the NG interface between the core network device and the access network device, the paging message may also be referred to as an NG paging message.

In some possible implementation manners, when the core network device additionally allocates the second user equipment identifier to the terminal device, the paging message may carry the first user equipment identifier and the second user equipment identifier of the first user identity of the terminal device. That is, the first user equipment identity and the second user equipment identity may be one specific example of the second indication information.

Specifically, the second indication information may refer to the description of step 620 in fig. 6, and is not described herein again for brevity.

The access network device determines 706 a first PO and a second PO.

707, the terminal device determines the first PO and the second PO and listens for paging messages on the first PO or the second PO.

The access network device sends a paging message on the first PO 708.

709, the access network device sends the paging message on the second PO.

In step 708 and step 709, since the paging message is transmitted over the air interface between the access network device and the terminal device, the paging message may also be referred to as an air interface paging message.

Specifically, the steps 706 to 709 can refer to descriptions of 630 to 670 in fig. 6, and are not described herein again for brevity.

Fig. 8 is a schematic flow chart of another paging method provided in the embodiment of the present application. In the method shown in fig. 8, when the first subscriber identity of the terminal device is in inactive state, the paging message is monitored on the first PO or the second PO.

It should be understood that fig. 8 shows steps or operations of the paging method, but these steps or operations are only examples, and other operations or variations of the respective operations in fig. 8 may also be performed by the embodiments of the present application. Moreover, the various steps in FIG. 8 may be performed in a different order presented in FIG. 8, and it is possible that not all of the operations in FIG. 8 may be performed.

801, the terminal device sends first indication information to the core network device. Correspondingly, the core network device receives the first indication information.

Specifically, step 801 may refer to the description of step 601 in fig. 6, and for brevity, the description is omitted here.

And 802, the core network equipment stores the first indication information.

Optionally, 803, the core network device sends the second user equipment identifier, or the first offset value, or the second offset value to the terminal device.

Specifically, step 803 may refer to description of 703 in fig. 7, and for brevity, will not be described here again.

And 804, the core network device sends an initial context establishment request message to the first access network device, wherein the initial context establishment request message carries second indication information.

It should be noted that the first access network device in step 804 is the serving access network device for which the first subscriber identity of the terminal device is currently present. In some possible embodiments, steps 801 to 803 and step 804 are relatively independent processes, that is, the first access network device in step 804 and the corresponding first access network device in the terminal device when performing steps 801 to 803 may be the same access network device or different access network devices.

For example, the first user identity of the terminal device enters an idle state after the above steps 801 to 803. Then, the terminal device enters a connected state by sending data by the first user equipment. At this time, the core network device sends an initial context establishment request message to the current service access network device of the first user identity of the terminal device, where the initial context establishment request message carries the second indication information.

As can be seen, for the terminal device in the inactive state, the core network device does not send the second indication information to the access network device through the paging message, but, for example, in the process that the terminal device enters the connected state, carries the initial context establishment request message to the access network device.

In some possible implementation manners, when the core network device additionally allocates the second user equipment identifier to the terminal device, the initial context establishment request message may carry the first user equipment identifier and the second user equipment identifier of the first user identity of the terminal device. That is, the first user equipment identity and the second user equipment identity may be one specific example of the second indication information.

Optionally, the core network may also carry the second indication information in other messages to send to the access network device, which is not limited in this embodiment of the present application.

805, the first access network device sends an initial context setup response message to the core network device.

It should be noted that, in this embodiment of the present application, the terminal device sends the first indication information to the core network device in the RRC connected state. After sending the first indication information, the terminal device enters a deactivated (inactive) state from the RRC connected state.

The first access network device determines 806 that the terminal device needs to be paged.

As an example, the first access network device may determine that the terminal device needs to be paged when downlink data of the terminal device arrives.

It should be noted that, for an inactive terminal device, the first access network device needs to page the terminal device to make it enter a connected state. That is to say, for the terminal device in the inactive state, the access network device triggers the air interface paging message.

Optionally, 807, the first access network device sends a paging message to the second access network device, where the paging message carries the second indication information. The paging message is used to instruct the second access network device to page the first subscriber identity of the terminal device.

In this case, the first access network device is an access network device that stores a context of the first user identity of the terminal device, and may also be referred to as an anchor access network device. Correspondingly, the second access network device may also be referred to as a neighboring access network device of the anchor access network device. As an example, if an anchor access network device includes an adjacent access network device in a RAN-based notification area (RNA) configured by an inactive terminal device of a first user identity, the anchor access network device sends a paging message to the adjacent access network device, where the paging message includes second indication information for indicating the adjacent access network device to send the paging message to the terminal device of the first user identity on at least two POs of the first user identity.

Illustratively, since the paging message in step 807 is transmitted through an Xn interface between access networks, the paging message may also be referred to as an Xn paging message.

808, the first access network device determines a first PO and a second PO.

809, the second access network device determines the first PO and the second PO.

The terminal device determines 810 the first PO and the second PO and listens for paging messages on the first PO or the second PO.

811, the first access network device sends a paging message on the first PO.

The first access network device sends a paging message on the second PO 812.

Optionally, 813, the second access network device sends the paging message on the first PO.

Optionally 814, the second access network device sends the paging message on the second PO.

Specifically, the second access network device determines the first PO and the second PO, the second access network device sends the paging message on the first PO or sends the paging message on the second PO, and the terminal device monitors the paging message of the second access network device on the first PO or the second PO, which is similar to a process in which the first access network device determines the first PO and the second PO, the first access network device sends the paging message on the first PO or sends the paging message on the second PO, and the terminal device monitors the paging message of the first access network device on the first PO or the second PO.

Therefore, in this embodiment of the application, when the terminal device supports the first user identity and the second user identity, the first PO and the second PO are set in one paging cycle of the first user identity of the terminal device, so that when the terminal device monitors a paging message in an inactive state with the first user identity, the PO which does not conflict with the PO in the paging cycle of the second user identity in a time domain resource can be selected to monitor, and thus, paging conflicts of multiple user identities of the terminal device can be avoided.

In some optional embodiments, when the terminal device recognizes that a paging collision occurs between the first subscriber identity and the second subscriber identity, the terminal device may send, to the core network device, auxiliary information in one of the subscriber identities, where the auxiliary information is used to indicate a parameter of the first subscriber identity of the terminal device for determining a paging occasion and/or a parameter of the second subscriber identity of the terminal device for determining a paging occasion.

After receiving the auxiliary information, the core network device may reassign a ue identifier to the first ue identity or the second ue identity of the terminal device according to the auxiliary information, and based on the auxiliary information, the core network device can ensure that the paging occasion obtained based on the assigned new ue identifier does not conflict with the paging occasion of another ue identity, thereby avoiding the problem of missing paging messages in the first ue identity and the second ue identity.

As an example, the parameters for determining the paging occasion include one or more of a paging cycle, a paging resource configuration, and a user equipment identity.

a paging cycle for the first subscriber identity;

a paging cycle for the second subscriber identity;

S-TMSI of the second subscriber identity.

a paging cycle for the first subscriber identity;

a paging cycle for the second subscriber identity;

S-TMSI of the first subscriber identity.

Fig. 9 shows an example of a paging cycle of a terminal device according to an embodiment of the present application. As an example, the terminal device may install SIM card 1 and SIM card 2. As shown in fig. 9, the old PO included in the first subscriber identity corresponding to the SIM card 1 in one paging cycle overlaps with the PO of the second subscriber identity in one paging cycle in the time domain. At this time, the terminal device may send the auxiliary information to the core network device in the first user identity, and the core network device may reassign one user device identifier to the first user identity of the terminal device according to the auxiliary information. Based on the reallocated ue identities, a new PO can be determined in the paging cycle of the first ue, the time domain position of the new PO not overlapping with the time domain position of the PO in the paging cycle of the second ue. At this time, the terminal device may monitor the paging message on the PO marked as new with the first subscriber identity, and monitor the paging message on the PO marked as paging cycle with the second subscriber identity, thereby avoiding paging collision between the first subscriber identity and the second subscriber identity.

Fig. 10 is a schematic flow chart of another paging method provided in the embodiment of the present application. In the method shown in fig. 10, when the first subscriber identity of the terminal device is in idle state, a paging message is monitored on the new PO.

It should be understood that fig. 10 shows steps or operations of the paging method, but these steps or operations are only examples, and other operations or variations of the respective operations in fig. 10 may also be performed by the embodiments of the present application. Moreover, the various steps in FIG. 10 may be performed in a different order than presented in FIG. 10, and it is possible that not all of the operations in FIG. 7 may be performed.

1001, the terminal device determines that a paging conflict occurs between the first subscriber identity and the second subscriber identity.

And 1002, the terminal equipment sends the auxiliary information to the core network equipment.

Specifically, the manner in which the terminal device sends the auxiliary information to the core network device may be similar to the manner in which the first indication information is sent. As an example, the message carrying the assistance information may be of the same type as the message carrying the first indication information. Specifically, reference may be made to the above description, and for brevity, the description is not repeated here.

1003, the core network device reallocates the fourth user equipment identifier to the terminal device according to the auxiliary information.

And 1004, the core network device sends the fourth user equipment identifier to the terminal device.

Specifically, the manner in which the core network device sends the fourth user equipment identifier to the terminal device may be similar to the manner in which the second user equipment identifier, the first offset value, or the second offset value is sent. Specifically, reference may be made to the above description, and for brevity, the description is not repeated here.

It should be noted that, in this embodiment of the present application, the terminal device sends the above-mentioned auxiliary information to the core network device in the RRC connected state. After the terminal device sends the auxiliary information, the terminal device enters an idle state from an RRC connected state.

The core network device determines to page the terminal device 1005.

Specifically, reference may be made to the description in step 704 in fig. 7, and details are not repeated here for brevity.

And 1006, the core network device sends a paging message to the access network device, where the paging message carries the fourth user equipment identifier.

1007, the access network device determines a new PO for the first user identity according to the fourth user equipment identity.

The terminal device determines 1008 a new PO for the first user identity based on the fourth user device identity and listens for paging messages on the new PO.

Specifically, according to the fourth ue identity, the process of determining the new PO may refer to the description above, and for brevity, is not described herein again.

1009, the access network device sends the paging message on the new PO.

Therefore, in this embodiment of the present application, when the terminal device supports the first user identity and the second user identity, the terminal device sends the parameter for determining the paging occasion of the first user identity to the core network device, so that the core network device can reallocate one user equipment identifier for the first user identity, and when the terminal device monitors a paging message in an idle state with the first user identity, the terminal device can monitor on a new PO that does not conflict with a PO in a paging cycle of the second user identity on a time domain resource, thereby avoiding a paging conflict occurring to multiple user identities of the terminal device.

Similarly, when the first subscriber identity of the terminal device is in inactive state, the paging message may also be listened to on the new PO. Different from the idle state of the first user identity of the terminal device, in the inactive state, the access network device initiates paging to the terminal device. And before the terminal device enters the inactive state, the fourth user equipment identifier may be sent to the access network device through the initial context establishment request. In addition, the access network device may further send an Xn paging message to the neighboring access network device, where the Xn paging message includes a fourth user equipment identifier, and is used to instruct the neighboring network device to determine a new PO according to the fourth user equipment identifier. The adjacent access network device may also send an air interface paging message at the new PO and the terminal device. Specifically, when the first user identity of the terminal device is in the inactive state, the process of monitoring the paging message may refer to the description in fig. 8, and for brevity, details are not described here again.

Fig. 11 is a schematic diagram of an apparatus 1100 for wireless communication according to the foregoing method. The apparatus 1100 may also be referred to as a paging apparatus.

In some embodiments, the apparatus 1100 may be a terminal device, or may be a chip or a circuit, such as a chip or a circuit that can be disposed on a terminal device.

In some embodiments, the apparatus 1100 may be a core network device, and may also be a chip or a circuit, for example, a chip or a circuit that may be disposed on a core network device.

In some embodiments, the apparatus 1100 may be an access network device, or may be a chip or a circuit, such as a chip or a circuit that may be disposed on an access network device.

In one possible approach, the apparatus 1100 may include a processing unit 1110 (i.e., an example of a processor) and a transceiving unit 1130. In some possible implementations, the processing unit 1110 may also be referred to as a determination unit. In some possible implementations, the transceiving unit 1130 may include a receiving unit and a transmitting unit.

Alternatively, the transceiving unit 1130 may be implemented by a transceiver or transceiver-related circuits or interface circuits.

Optionally, the apparatus may further include a storage unit 1120. In one possible approach, the storage unit 1120 is used to store instructions. Optionally, the storage unit may also be used to store data or information. The storage unit 1120 may be implemented by a memory.

In some possible designs, the processing unit 1110 is configured to execute the instructions stored by the storage unit 1120, so as to enable the apparatus 1100 to implement the steps performed by the terminal device in the method described above. Alternatively, the processing unit 1110 may be configured to call data of the storage unit 1120, so as to enable the apparatus 1100 to implement the steps performed by the terminal device in the method as described above.

In some possible designs, the processing unit 1110 is configured to execute the instructions stored by the storage unit 1120, so as to enable the apparatus 1100 to implement the steps performed by the core network device in the method described above. Alternatively, the processing unit 1110 may be configured to call the data of the storage unit 1120, so as to enable the apparatus 1100 to implement the steps performed by the core network device in the method described above.

In some possible designs, the processing unit 1110 is configured to execute the instructions stored by the storage unit 1120, so as to enable the apparatus 1100 to implement the steps performed by the access network device in the method described above. Alternatively, the processing unit 1110 may be configured to call the data of the storage unit 1120, so as to enable the apparatus 1100 to implement the steps performed by the core network device in the method described above.

For example, the processing unit 1110, the storage unit 1120, and the transceiver unit 1130 may communicate with each other via internal connection paths to transmit control and/or data signals. For example, the storage unit 1120 is used to store a computer program, and the processing unit 1110 may be configured to call and run the computer program from the storage unit 1120 to control the transceiver unit 1130 to receive and/or transmit a signal, so as to complete the steps of the terminal device, the core network device, or the access network device in the foregoing method. The storage unit 1120 may be integrated in the processing unit 1110, or may be provided separately from the processing unit 1110.

Alternatively, if the apparatus 1100 is a communication device (e.g., a terminal device, or a core network device, or an access network device), the transceiving unit 1130 includes a receiver and a transmitter. Wherein the receiver and the transmitter may be the same or different physical entities. When the same physical entity, may be collectively referred to as a transceiver.

Optionally, if the apparatus 1100 is a chip or a circuit, the transceiver unit 1130 includes an input interface and an output interface.

As an implementation manner, the function of the transceiving unit 1130 may be considered to be implemented by a transceiving circuit or a dedicated transceiving chip. The processing unit 1110 may be considered to be implemented by a dedicated processing chip, a processing circuit, a processing unit, or a general-purpose chip.

As another implementation manner, it may be considered that the communication device (e.g., a terminal device, or an access network device, or a core network device) provided in the embodiments of the present application is implemented by using a general-purpose computer. Program codes for realizing the functions of the processing unit 1110 and the transceiver unit 1130 are stored in the storage unit 1120, and the general-purpose processing unit executes the codes in the storage unit 1120 to realize the functions of the processing unit 1110 and the transceiver unit 1130.

In some embodiments, the apparatus 1100 may be a terminal device, or a chip or a circuit disposed on a terminal device.

When the apparatus 1100 is a terminal device, or a chip or a circuit disposed in the terminal device, the processing unit 1110 is configured to determine that the first subscriber identity includes a first paging occasion PO and a second PO in a paging cycle of the first subscriber identity, where the first PO and the second PO are used for an access network device to page the apparatus.

A transceiving unit 1130, configured to monitor a paging message of the first subscriber identity on the first PO or on the second PO with the first subscriber identity.

Optionally, the apparatus 1100 further supports a second subscriber identity, and the apparatus 1100 includes a third PO in one paging cycle of the second subscriber identity.

Optionally, the time domain position of the first PO is determined according to the first ue identity of the first ue identity.

Optionally, the second offset value includes at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.

Optionally, the first ue identity of the first ue identity includes a temporary mobile subscriber identity S-TMSI of the first ue identity.

Optionally, the transceiver unit 1130 is further configured to receive the second ue identifier, or the first offset value, or the second offset value from a core network device with the first subscriber identity.

Optionally, the transceiver unit 1130 is configured to send first indication information to a core network device with the first subscriber identity, where the first indication information is used to indicate that the apparatus supports at least two subscriber identities, or indicate that the first subscriber identity of the apparatus includes at least two POs in one paging cycle.

Optionally, when the processing unit 1110 determines that the time domain position of the PO of the first subscriber identity overlaps with the time domain position of the PO of the second subscriber identity, the transceiver unit 1130 is further configured to send the first indication information to the core network device in the first subscriber identity.

When the apparatus 1100 is configured or is a terminal device, each module or unit in the apparatus 1100 may be configured to execute each action or processing procedure executed by the terminal device in the above method, and a detailed description thereof is omitted here for avoiding redundancy.

In some embodiments, the apparatus 1100 may be a core network device, or a chip or a circuit disposed in a core network device. When the apparatus 1100 is a core network device, or a chip or a circuit disposed in the core network device, the transceiver 1130 is configured to obtain first indication information, where the first indication information is used to indicate that a terminal device supports at least two user identities, or indicate that one paging cycle of the first user identity of the terminal device includes at least two POs.

The transceiving unit 1130 is further configured to send second indication information to the access network device, where the second indication information is used to instruct the access network device to send a paging message to the terminal device on the at least two POs.

Optionally, the transceiver unit 1130 is specifically configured to: and sending a paging message to the access network equipment, wherein the paging message is used for indicating the access network equipment to page the terminal equipment, and the paging message comprises the second indication information.

Optionally, the transceiver unit 1130 is specifically configured to: and sending an initial context establishment request message to the access network equipment, wherein the initial context establishment request message comprises the second indication information.

Optionally, the at least two POs include a first PO and a second PO.

The second indication information includes a first user equipment identifier and a second user equipment identifier of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO and the second user equipment identifier is used to determine the second PO; or

The second indication information includes a first user equipment identifier and a first offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO and the first offset value is used to determine the second PO; or the like, or, alternatively,

Optionally, the transceiver 1130 is further configured to send the second ue identifier, or the first offset value, or the second offset value to the terminal device.

When the apparatus 1100 is configured or is itself a core network device, each module or unit in the apparatus 1100 may be configured to execute each action or processing procedure executed by the core network device in the foregoing method, and a detailed description thereof is omitted here for avoiding redundancy.

In some embodiments, the apparatus 1100 may be an access network device, or a chip or circuit disposed in an access network device. When the apparatus 1100 is an access network device, or a chip or a circuit disposed in the access network device, the transceiver 1130 is configured to receive second indication information, where the second indication information is used to indicate that the apparatus sends a paging message to a terminal device at least two paging occasions PO within one paging cycle of a first subscriber identity of the terminal device.

A processing unit 1110, configured to determine a first PO and a second PO in the paging cycle, where the at least two POs include the first PO and the second PO;

the transceiving unit 1130 is further configured to send a paging message to the terminal device over the first PO and the second PO.

Optionally, the transceiver 1130 is specifically configured to receive a paging message, where the paging message is used to instruct the first access network device to page the first subscriber identity of the terminal device, and the paging message includes the second indication information.

Optionally, the transceiver unit 1130 is specifically configured to: receiving the paging message from a core network device.

Optionally, the transceiver unit 1130 is specifically configured to: receiving the paging message from a second access network device, the second access network device being an access network device that maintains a context for the first subscriber identity of the terminal device.

Optionally, the transceiver unit 1130 is specifically configured to: receiving an initial context setup request message from the core network device, where the initial context setup request message includes the second indication information.

Optionally, the transceiver unit 1130 is further configured to: sending a paging message to a third access network device, where the apparatus is an access network device that stores a context of the first user identity of the terminal device, the paging message is used to instruct the third access network device to page the first user identity of the terminal device, and the paging message includes the second instruction information.

Optionally, the second indication information includes a first user equipment identifier and a second user equipment identifier of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, and the second user equipment identifier is used to determine the second PO. Or

Optionally, the second offset value includes a radio frame offset value, or at least one of a subframe offset value and a paging frame offset value.

When the apparatus 1100 is configured or is itself an access network device, each module or unit in the apparatus 1100 may be configured to execute each action or processing procedure executed by the access network device in the foregoing method, and a detailed description thereof is omitted here for avoiding redundancy.

For the concepts, explanations, details and other steps related to the technical solutions provided in the embodiments of the present application related to the apparatus 1100, please refer to the descriptions of the foregoing methods or other embodiments, which are not repeated herein.

Fig. 12 is a schematic structural diagram of a terminal device 1200 provided in the present application. The terminal device 1200 may perform the actions performed by the terminal device in the above-described method embodiments.

For convenience of explanation, fig. 12 shows only main components of the terminal device. As shown in fig. 12, the terminal apparatus 1200 includes a processor, a memory, a control circuit, an antenna, and an input-output device.

The processor is mainly configured to process a communication protocol and communication data, control the entire terminal device, execute a software program, and process data of the software program, for example, to support the terminal device to perform the actions described in the above embodiment of the method for indicating a transmission precoding matrix. The memory is mainly used for storing software programs and data, for example, the codebook described in the above embodiments. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit and the antenna together, which may also be called a transceiver, are mainly used for transceiving 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.

When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards 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.

Those skilled in the art will appreciate that fig. 12 shows only one memory and processor for ease of illustration. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this application.

For example, the processor may include a baseband processor and a central processing unit, the baseband processor is mainly used for processing the communication protocol and the communication data, and the central processing unit is mainly used for controlling the whole terminal device, executing the software program, and processing the data of the software program. The processor in fig. 12 integrates the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network formats, the terminal device may include a plurality of central processors to enhance its processing capability, and various components of the terminal device may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

For example, in the embodiment of the present application, the antenna and the control circuit having the transceiving function may be regarded as the transceiving unit 1210 of the terminal device 1200, and the processor having the processing function may be regarded as the processing unit 1220 of the terminal device 1200. As shown in fig. 12, the terminal apparatus 1200 includes a transceiving unit 1210 and a processing unit 1220. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Optionally, a device for implementing the receiving function in the transceiver unit 1210 may be regarded as a receiving unit, and a device for implementing the transmitting function in the transceiver unit 1210 may be regarded as a transmitting unit, that is, the transceiver unit includes a receiving unit and a transmitting unit. For example, the receiving unit may also be referred to as a receiver, a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitting circuit, etc.

Fig. 13 is a schematic structural diagram of an access network device 1300 according to an embodiment of the present application, which may be used to implement the functions of an access device (e.g., a first access network device, a second access network device, or a third access network device) in the foregoing method. The access network equipment 1300 includes one or more radio frequency units, such as a Remote Radio Unit (RRU) 1310 and one or more baseband units (BBUs) (which may also be referred to as digital units, DUs) 1320. The RRU1310 may be referred to as a transceiver unit, transceiver circuitry, or transceiver, etc., which may include at least one antenna 1311 and a radio frequency unit 1312. The RRU1310 is mainly used for transceiving radio frequency signals and converting radio frequency signals into baseband signals, for example, for sending signaling messages described in the above embodiments to a terminal device. The BBU1320 is mainly used for performing baseband processing, controlling a base station, and the like. The RRU1310 and the BBU1320 may be physically located together or physically located separately, i.e. distributed base stations.

The BBU1320 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, and spreading. For example, the BBU (processing unit) 1320 can be used to control the base station 40 to execute the operation flow related to the network device in the above-described method embodiment.

In an example, the BBU1320 may be formed by one or more boards, and the boards may support a radio access network of a single access system (e.g., an LTE system or a 5G system) together, or may support radio access networks of different access systems respectively. The BBU1320 also includes a memory 1321 and a processor 1322. The memory 1321 is used to store the necessary instructions and data. The memory 1321 stores, for example, the codebook and the like in the above-described embodiments. The processor 1322 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedure related to the network device in the above-described method embodiment. The memory 1321 and processor 1322 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

In one possible implementation, with the development of system-on-chip (SoC) technology, all or part of the functions of the 1320 part and the 1310 part may be implemented by SoC technology, for example, by a base station function chip, which integrates a processor, a memory, an antenna interface, and other devices, and a program of the related functions of the base station is stored in the memory, and the processor executes the program to implement the related functions of the base station. Optionally, the base station function chip can also read a memory outside the chip to implement the relevant functions of the base station.

It should be understood that the structure of the access network device illustrated in fig. 13 is only one possible form, and should not limit the embodiments of the present application in any way. This application does not exclude the possibility of other forms of base station structure that may appear in the future.

It should be understood that in the embodiments of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer instructions or the computer program are loaded or executed on a computer. 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 on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (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 such as a server, data center, etc. that contains one or more collections of available media. 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. The semiconductor medium may be a solid state disk.

An embodiment of the present application further provides a computer-readable medium, on which a computer program is stored, where the computer program, when executed by a computer, implements the steps executed by the terminal device, or the steps executed by the core network device, or the steps executed by the access network device in any of the above embodiments.

The embodiments of the present application further provide a computer program product, where the computer program product implements, when executed by a computer, the steps executed by the terminal device, or the steps executed by the core network device, or the steps executed by the access network device in any of the above embodiments.

An embodiment of the present application further provides a system chip, where the system chip includes: a communication unit and a processing unit. The processing unit may be, for example, a processor. The communication unit may be, for example, a communication interface, an input/output interface, a pin or a circuit, etc. The processing unit may execute computer instructions, so that a chip in the communication device executes the steps executed by the terminal device, the steps executed by the core network device, or the steps executed by the access network device provided in the embodiment of the present application.

Optionally, the computer instructions are stored in a storage unit.

According to the method provided by the embodiment of the present application, an embodiment of the present application further provides a communication system, which includes the core network device, the access network device, and the terminal device.

The embodiments in the present application may be used independently or jointly, and are not limited herein.

In addition, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

It should be understood that "and/or," which describes an association relationship for an associated object, indicates that there may be three relationships, e.g., a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one" means one or more than one; "at least one of a and B", similar to "a and/or B", describes an association relationship of associated objects, meaning that three relationships may exist, for example, at least one of a and B may mean: a exists alone, A and B exist simultaneously, and B exists alone.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A paging method, wherein the method is applied to a terminal device, and the terminal device supports a first subscriber identity, the method comprising:

the terminal equipment determines that a first user identity comprises a first paging occasion PO and a second PO in one paging cycle of the first user identity, and the first PO and the second PO are used for an access network equipment to page the terminal equipment;

and the terminal equipment monitors the paging message of the first user identity on the first PO or the second PO by the first user identity.
The method of claim 1, wherein the terminal device further supports a second subscriber identity, and wherein the terminal device comprises a third PO in one paging cycle of the second subscriber identity;

when the time domain position of the first PO overlaps with the time domain position of the third PO, the terminal device monitors the paging message of the second subscriber identity on the third PO in the second subscriber identity, and the terminal device monitors the paging message of the first subscriber identity on the second PO in the first subscriber identity; or

When the time domain position of the second PO overlaps with the time domain position of the third PO, the terminal device monitors the paging message of the second subscriber identity on the third PO in the second subscriber identity, and the terminal device monitors the paging message of the first subscriber identity on the first PO in the first subscriber identity; or

When the time domain position of the first PO and the time domain position of the second PO do not overlap with the time domain position of the third PO, the terminal device monitors the paging message of the first subscriber identity on the first PO or the second PO with the first subscriber identity, and the terminal device monitors the paging message of the second subscriber identity on the third PO with the second subscriber identity.
The method according to claim 1 or 2, wherein the time domain location of the first PO is determined according to a first ue identity of the first ue identity;

the time domain position of the second PO is determined according to a second user equipment identity of the first user identity, wherein the second user equipment identity is different from the first user equipment identity; or

The time domain position of the second PO is determined according to the first user equipment identification and the first offset value; or

The time domain position of the second PO is determined according to the time domain position of the first PO and a second offset value, where the second offset value is used to indicate an offset of the time domain position of the second PO from the time domain position of the first PO.
The method of claim 3, wherein the second offset value comprises at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.
The method according to claim 3 or 4, wherein the first UE identity of the first subscriber identity comprises a temporary Mobile subscriber identity, S-TMSI, of the first subscriber identity.
The method according to any one of claims 3-5, further comprising:

and the terminal equipment receives the second user equipment identification, or the first offset value, or the second offset value from core network equipment by using the first user identity.
The method according to any one of claims 1-6, further comprising:

the terminal device sends first indication information to a core network device according to the first user identity, where the first indication information is used to indicate that the terminal device supports at least two user identities, or indicate that the first user identity of the terminal device includes at least two POs in one paging cycle.
The method of claim 7, further comprising:

when the terminal device determines that the time domain position of the PO of the first user identity overlaps with the time domain position of the PO of the second user identity of the terminal device, the terminal device sends the first indication information to the core network device in the first user identity.
A paging method, wherein the method is applied to a core network device, and the method comprises:

the core network equipment acquires first indication information, wherein the first indication information is used for indicating that the terminal equipment supports at least two user identities, or indicating that one paging cycle of the first user identity of the terminal equipment comprises at least two POs;

and the core network equipment sends second indication information to access network equipment, wherein the second indication information is used for indicating the access network equipment to send paging messages to the terminal equipment on the at least two POs.
The method of claim 9, wherein the core network device sends the second indication information to the access network device, and wherein the sending comprises:

and the core network equipment sends a paging message to the access network equipment, wherein the paging message is used for indicating the access network equipment to page the terminal equipment, and the paging message comprises the second indication information.
The method of claim 9, wherein the core network device sends the second indication information to the access network device, and wherein the sending comprises:

and the core network equipment sends an initial context establishment request message to the access network equipment, wherein the initial context establishment request message comprises the second indication information.
The method according to any one of claims 9-11, wherein the at least two POs comprise a first PO and a second PO,

the second indication information includes a first user equipment identifier and a second user equipment identifier of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO and the second user equipment identifier is used to determine the second PO; or

The second indication information includes a first user equipment identifier and a first offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO and the first offset value is used to determine the second PO; or the like, or, alternatively,

the second indication information includes a first user equipment identifier and a second offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, the second offset value is used to determine the second PO, and the second offset value is used to indicate an offset of a time domain position of the second PO with respect to a time domain position of the first PO.
The method of claim 12, wherein the second offset value comprises at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.
The method according to claim 12 or 13, wherein the first ue identity of the first ue identity comprises a temporary mobile subscriber identity, S-TMSI, of the first ue identity.
The method according to any one of claims 12-14, further comprising:

and the core network equipment sends the second user equipment identifier, or the first offset value, or the second offset value to the terminal equipment.
A method for paging, the method being applicable to a first access network device, the method comprising:

the first access network equipment receives second indication information, wherein the second indication information is used for indicating the first access network equipment to send paging messages to the terminal equipment on at least two paging occasions PO within one paging cycle of a first user identity of the terminal equipment;

the first access network device determining a first PO and a second PO within the paging cycle, wherein the at least two POs include the first PO and the second PO;

and the first access network equipment sends a paging message to the terminal equipment on the first PO and the second PO.
The method of claim 16, wherein the time domain location of the first PO is determined according to a first ue identity of the first ue;

the time domain position of the second PO is determined according to a second user equipment identity of the first user identity, wherein the second user equipment identity is different from the first user equipment identity; or

The time domain position of the second PO is determined according to the first user equipment identification and the first offset value; or

The time domain position of the second PO is determined according to the time domain position of the first PO and a second offset value, where the second offset value is used to indicate an offset of the time domain position of the second PO from the time domain position of the first PO.
The method of claim 17, wherein the second offset value comprises at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.
The method according to claim 17 or 18, wherein the first ue identity of the first ue identity comprises a temporary mobile subscriber identity, S-TMSI, of the first ue identity.
The method of any of claims 16-19, wherein receiving, by the first access network device, the second indication information comprises:

the first access network device receives a paging message, where the paging message is used to instruct the first access network device to page the first user identity of the terminal device, and the paging message includes the second instruction information.
The method of claim 20, wherein receiving the paging message by the first access network device comprises:

the first access network device receives the paging message from a core network device.
The method of claim 20, wherein receiving the paging message by the first access network device comprises:

the first access network device receives the paging message from a second access network device, which is an access network device that maintains a context of the first subscriber identity of the terminal device.
The method of any of claims 16-19, wherein receiving, by the first access network device, the second indication information comprises:

the first access network device receives an initial context setup request message from the core network device, where the initial context setup request message includes the second indication information.
The method of any one of claims 16-19, further comprising:

the first access network device sends a paging message to a third access network device, where the first access network device is an access network device that stores a context of the first user identity of the terminal device, the paging message is used to instruct the third access network device to page the first user identity of the terminal device, and the paging message includes the second instruction information.
The method according to any of claims 16-24, wherein the second indication information comprises a first ue identity and a second ue identity of the first ue identity of the terminal device, wherein the first ue identity is used to determine the first PO and the second ue identity is used to determine the second PO; or

The second indication information includes a first user equipment identifier and a first offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO and the first offset value is used to determine the second PO; or the like, or, alternatively,

the second indication information includes a first user equipment identifier and a second offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, the second offset value is used to determine the second PO, and the second offset value is used to indicate an offset value of a time domain position of the second PO with respect to a time domain position of the first PO.
The method of claim 25, wherein the second offset value comprises a radio frame offset value or at least one of a subframe offset value and a paging frame offset value.
The method according to claim 25 or 26, wherein the first ue identity of the first ue identity comprises a temporary mobile subscriber identity, S-TMSI, of the first ue identity.
An apparatus for paging, the apparatus supporting a first subscriber identity, the apparatus comprising:

a determining unit, configured to determine that a first subscriber identity includes a first paging occasion PO and a second PO in one paging cycle of the first subscriber identity, where the first PO and the second PO are used for an access network device to page the apparatus;

a receiving unit, configured to monitor a paging message of the first subscriber identity on the first PO or on the second PO with the first subscriber identity.
The apparatus of claim 28, wherein the apparatus further supports a second user identity,

the apparatus includes a third PO within one paging cycle of the second subscriber identity;

when the time domain position of the first PO is overlapped with the time domain position of the third PO, the device monitors the third PO for the paging message of the second subscriber identity in the second subscriber identity, and the device monitors the second PO for the paging message of the first subscriber identity in the first subscriber identity; or

When the time domain position of the second PO overlaps with the time domain position of the third PO, the apparatus monitors the third PO for the paging message of the second subscriber identity in the second subscriber identity, and the apparatus monitors the first PO for the paging message of the first subscriber identity in the first subscriber identity; or

When the time domain position of the first PO and the time domain position of the second PO do not overlap with the time domain position of the third PO, the apparatus monitors the paging message of the first subscriber identity on the first PO or the second PO with the first subscriber identity, and monitors the paging message of the second subscriber identity on the third PO with the second subscriber identity.
The apparatus of claim 28 or 29, wherein the time domain location of the first PO is determined according to a first ue identity of the first ue identity;

the time domain position of the second PO is determined according to a second user equipment identity of the first user identity, wherein the second user equipment identity is different from the first user equipment identity; or

The time domain position of the second PO is determined according to the first user equipment identification and the first offset value; or

The time domain position of the second PO is determined according to the time domain position of the first PO and a second offset value, where the second offset value is used to indicate an offset of the time domain position of the second PO from the time domain position of the first PO.
The apparatus of claim 30, wherein the second offset value comprises at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.
The apparatus according to claim 30 or 31, wherein the first ue identity of the first ue identity comprises a temporary mobile subscriber identity, S-TMSI, of the first ue identity.
The apparatus according to any of claims 30-32, wherein the receiving unit is further configured to receive the second ue identity, or the first offset value, or the second offset value from a core network device with the first subscriber identity.
The apparatus of any one of claims 28-33, further comprising:

a sending unit, configured to send first indication information to a core network device with the first subscriber identity, where the first indication information is used to indicate that the apparatus supports at least two subscriber identities, or indicate that the first subscriber identity of the apparatus includes at least two POs in one paging cycle.
The apparatus of claim 34,

when the determining unit determines that the time domain position of the PO of the first subscriber identity overlaps with the time domain position of the PO of the second subscriber identity, the sending unit is further configured to send the first indication information to the core network device with the first subscriber identity.
An apparatus for paging, the apparatus comprising:

a receiving unit, configured to obtain first indication information, where the first indication information is used to indicate that a terminal device supports at least two user identities, or indicate that a paging cycle of a first user identity of the terminal device includes at least two POs;

a sending unit, configured to send second indication information to an access network device, where the second indication information is used to indicate the access network device to send a paging message to the terminal device on the at least two POs.
The apparatus according to claim 36, wherein the sending unit is specifically configured to:

and sending a paging message to the access network equipment, wherein the paging message is used for indicating the access network equipment to page the terminal equipment, and the paging message comprises the second indication information.
The apparatus according to claim 36, wherein the sending unit is specifically configured to:

and sending an initial context establishment request message to the access network equipment, wherein the initial context establishment request message comprises the second indication information.
The apparatus of any one of claims 36-38, wherein the at least two POs comprise a first PO and a second PO,

the second indication information includes a first user equipment identifier and a second user equipment identifier of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO and the second user equipment identifier is used to determine the second PO; or

The second indication information includes a first user equipment identifier and a first offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO and the first offset value is used to determine the second PO; or the like, or, alternatively,

the second indication information includes a first user equipment identifier and a second offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, the second offset value is used to determine the second PO, and the second offset value is used to indicate an offset of a time domain position of the second PO with respect to a time domain position of the first PO.
The apparatus of claim 39, wherein the second offset value comprises at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.
The apparatus according to claim 39 or 40, wherein the first UE identity of the first UE identity comprises a temporary Mobile subscriber identity, S-TMSI, of the first UE identity.
The apparatus according to any of claims 39-41, wherein the sending unit is further configured to send the second UE identity, or the first offset value, or the second offset value to the terminal device.
An apparatus for paging, the apparatus comprising:

a receiving unit, configured to receive second indication information, where the second indication information is used to indicate that the apparatus sends a paging message to a terminal device on at least two paging occasions PO within one paging cycle of a first subscriber identity of the terminal device;

a determining unit, configured to determine a first PO and a second PO in the paging cycle, where the at least two POs include the first PO and the second PO;

a sending unit, configured to send a paging message to the terminal device on the first PO and the second PO.
The apparatus of claim 43, wherein the time domain location of the first PO is determined according to a first UE identity of the first UE identity;

the time domain position of the second PO is determined according to a second user equipment identity of the first user identity, wherein the second user equipment identity is different from the first user equipment identity; or

The time domain position of the second PO is determined according to the first user equipment identification and the first offset value; or

The time domain position of the second PO is determined according to the time domain position of the first PO and a second offset value, where the second offset value is used to indicate an offset of the time domain position of the second PO from the time domain position of the first PO.
The apparatus of claim 44, wherein the second offset value comprises at least one of a radio frame offset value, a subframe offset value, and a paging frame offset value.
The apparatus according to claim 44 or 45, wherein the first UE identity of the first UE identity comprises a temporary Mobile subscriber identity, S-TMSI, of the first UE identity.
The apparatus according to any of claims 43-46, wherein the receiving unit is specifically configured to:

receiving a paging message, where the paging message is used to instruct the first access network device to page the first subscriber identity of the terminal device, and the paging message includes the second indication information.
The apparatus according to claim 47, wherein the receiving unit is specifically configured to:

receiving the paging message from a core network device.
The apparatus according to claim 47, wherein the receiving unit is specifically configured to:

receiving the paging message from a second access network device, the second access network device being an access network device that maintains a context for the first subscriber identity of the terminal device.
The apparatus according to any of claims 43-46, wherein the receiving unit is specifically configured to:

receiving an initial context setup request message from the core network device, where the initial context setup request message includes the second indication information.
The apparatus according to any of claims 43-46, wherein the sending unit is further configured to:

sending a paging message to a third access network device, where the apparatus is an access network device that stores a context of the first user identity of the terminal device, the paging message is used to instruct the third access network device to page the first user identity of the terminal device, and the paging message includes the second instruction information.
The apparatus according to any of claims 43-51, wherein the second indication information comprises a first UE identity and a second UE identity of the first UE of the terminal device, wherein the first UE identity is used to determine the first PO and the second UE identity is used to determine the second PO; or

The second indication information includes a first user equipment identifier and a first offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO and the first offset value is used to determine the second PO; or the like, or, alternatively,

the second indication information includes a first user equipment identifier and a second offset value of the first user identity of the terminal device, where the first user equipment identifier is used to determine the first PO, the second offset value is used to determine the second PO, and the second offset value is used to indicate an offset value of a time domain position of the second PO with respect to a time domain position of the first PO.
The apparatus of claim 52, wherein the second offset value comprises a radio frame offset value or at least one of a subframe offset value and a paging frame offset value.
The apparatus according to claim 52 or 53, wherein the first UE identity of the first UE identity comprises a temporary Mobile subscriber identity, S-TMSI, of the first UE identity.
A computer storage medium for storing a computer program comprising instructions for performing the method of any one of claims 1-27.
A chip, wherein the chip comprises:

a processor and a communication interface, the processor to invoke and execute instructions from the communication interface, the instructions when executed by the processor implementing the method of any of claims 1-27.