CN114697968A - Data transmission method and device, base station, user equipment and storage medium - Google Patents

Data transmission method and device, base station, user equipment and storage medium Download PDF

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Publication number
CN114697968A
CN114697968A CN202011578833.8A CN202011578833A CN114697968A CN 114697968 A CN114697968 A CN 114697968A CN 202011578833 A CN202011578833 A CN 202011578833A CN 114697968 A CN114697968 A CN 114697968A
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China
Prior art keywords
base station
upip
target base
data transmission
user equipment
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CN202011578833.8A
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Chinese (zh)
Inventor
朱春晖
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Spreadtrum Semiconductor Nanjing Co Ltd
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Spreadtrum Semiconductor Nanjing Co Ltd
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Priority to CN202011578833.8A priority Critical patent/CN114697968A/en
Priority to PCT/CN2021/137674 priority patent/WO2022143137A1/en
Publication of CN114697968A publication Critical patent/CN114697968A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/10—Integrity
    • H04W12/106—Packet or message integrity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

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

Abstract

The invention discloses a data transmission method and device, a base station, user equipment and a storage medium. The data transmission method comprises the following steps: acquiring indication information for representing whether a target base station supports UPIP or not; and determining whether to send a handover command to the user equipment based on the indication information, wherein the handover command is used for indicating the user equipment to switch from being connected with a source base station to being connected with the target base station. The invention determines whether to send a switching command to the user equipment or not based on the indication information for representing whether the target base station supports the UPIP, namely, whether to switch the user equipment from being connected with the source base station to being connected with the target base station or not. Compared with the network switching method in the prior art, the method selects whether to switch the network under the condition of determining whether the target base station supports the UPIP, can improve the stability of the UPIP PDU session of the user equipment, and further improves the user experience.

Description

Data transmission method and device, base station, user equipment and storage medium
Technical Field
The present invention relates to the field of communications, and in particular, to a data transmission method and apparatus, a base station, a user equipment, and a storage medium.
Background
UPIP (User Plane Integrity Protection) refers to Integrity Protection of PDCP (Packet Data Convergence Protocol) layer Data between a UE (User Equipment) and a base station, and the UE and the base station can detect whether the PDCP layer Data is tampered with in the middle.
Currently, the 5G base stations gNB all support UPIP, but the traditional 4G base stations (R16 and earlier base station eNB/access network E-UTRAN) do not support UPIP. Starting from 3GPP R17, some 4G base stations enbs will be upgraded to support UPIP, and therefore, both "UPIP supported" and "non-UPIP supported" 4G base stations enbs will exist in R17 and beyond.
For a UE and a 5G base station gNB both supporting UPIP, on the basis that both have activated a UPIP PDU (protocol data unit) session, the UE needs to switch from being connected with the 5G base station gNB to being connected with a 4G base station eNB due to network coverage and other reasons, and a specific flow of switching the network is shown in fig. 1.
However, the 4G base station eNB may not support UPIP, and in this case, if the network is still switched, the UPIP PDU session at the UE end may fail, thereby reducing the user experience.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a data transmission method and apparatus, a base station, a user equipment, and a storage medium for improving user experience, in order to overcome the defect in the prior art that a network is still switched to cause session failure of UPIP PDU under the condition that a target base station does not support UPIP.
The invention solves the technical problems through the following technical scheme:
a first aspect of the present invention provides a data transmission method, including the steps of:
acquiring indication information for representing whether a target base station supports UPIP or not;
and determining whether to send a handover command to the user equipment based on the indication information, wherein the handover command is used for indicating the user equipment to switch from being connected with a source base station to being connected with the target base station.
Optionally, the obtaining of the indication information for characterizing whether the target base station supports the UPIP specifically includes:
sending a handover request to a mobility management function; wherein the handover requirement includes information of a target base station and a request that requires the target base station to indicate whether to support UPIP;
and receiving indication information which is sent by the target base station and used for representing whether the target base station supports UPIP or not.
Optionally, the obtaining of the indication information for characterizing whether the target base station supports the UPIP specifically includes:
monitoring system information of a target base station, and acquiring indication information for representing whether the target base station supports UPIP from the system information.
Optionally, the determining whether to send a handover command to the user equipment based on the indication information specifically includes: and if the indication information represents that the target base station does not support the UPIP, sending a switching command to user equipment, wherein the switching command comprises a message for indicating that the target base station does not support the UPIP.
Optionally, the determining whether to send a handover command to the user equipment based on the indication information specifically includes: and if the indication information represents that the target base station supports UPIP, sending a switching command to the user equipment.
Optionally, the determining whether to send a handover command to the user equipment based on the indication information specifically includes:
and if the indication information represents that the target base station does not support UPIP, determining whether to send a switching command to the user equipment according to a PDU session established between the user equipment and the target base station.
Optionally, the determining whether to send a handover command to the user equipment according to the PDU session established with the user equipment specifically includes: and if the PDU session established between the UE and the UE only comprises the UPIP PDU session, not sending a switching command to the UE.
Optionally, the determining whether to send a handover command to the user equipment according to the PDU session established with the user equipment specifically includes: if the PDU session established between the user equipment and the user equipment comprises a UPIP PDU session and a non-UPIP PDU session, sending a switching command to the user equipment, wherein the switching command comprises a resource request of the PDU session to be switched, and the PDU session to be switched only comprises the non-UPIP PDU session.
Optionally, in a case that it is determined to send a handover command to the user equipment, the data transmission method further includes:
a deactivation request for a UPIP PDU session is sent to a mobility management function.
Optionally, the deactivation request carries a deactivation reason, where the deactivation reason is that the target base station does not support UPIP.
A second aspect of the present invention provides a data transmission apparatus, comprising:
the acquisition module is used for acquiring indication information for representing whether the target base station supports UPIP or not;
and a determining module, configured to determine whether to send a handover command to the user equipment based on the indication information, where the handover command is used to instruct the user equipment to switch from connecting with the source base station to connecting with the target base station.
Optionally, the obtaining module includes:
a sending unit, configured to send a handover request to a mobility management function; wherein the handover requirement includes information of a target base station and a request that requires the target base station to indicate whether to support UPIP;
and the receiving unit is used for receiving the indication information which is sent by the target base station and used for representing whether the target base station supports the UPIP or not.
Optionally, the obtaining module is specifically configured to monitor system information of a target base station, and obtain, from the system information, indication information for representing whether the target base station supports UPIP.
Optionally, the determining module is specifically configured to send a handover command to the user equipment when the indication information indicates that the target base station does not support UPIP, where the handover command includes a message for indicating that the target base station does not support UPIP.
Optionally, the determining module is specifically configured to send a handover command to the user equipment when the indication information indicates that the target base station supports the UPIP.
Optionally, the determining module is specifically configured to determine whether to send a handover command to the user equipment according to a PDU session established with the user equipment, when the indication information indicates that the target base station does not support the UPIP.
Optionally, the indication information indicates that the target base station does not support UPIP, and the determining module is specifically configured to not send a handover command to the user equipment when the PDU session established with the user equipment only includes a UPIP PDU session;
optionally, the indication information indicates that the target base station does not support UPIP, and the determining module is specifically configured to send a handover command to the user equipment when the PDU session established with the user equipment includes a UPIP PDU session and a non-UPIP PDU session, where the handover command includes a resource request of the PDU session to be handed over, and the PDU session to be handed over only includes the non-UPIP PDU session.
Optionally, the data transmission apparatus further includes a sending module, configured to send a deactivation request of a UPIP PDU session to a mobility management function in a case that it is determined that the handover command is sent to the user equipment.
Optionally, the deactivation request carries a deactivation reason, where the deactivation reason is that the target base station does not support UPIP.
A third aspect of the present invention provides a data transmission method, including the steps of:
broadcasting system information, wherein the system information comprises indication information for indicating whether the base station supports UPIP.
A fourth aspect of the present invention provides a data transmission apparatus, including a broadcasting module, configured to broadcast system information, where the system information includes indication information indicating whether a base station supports UPIP.
A fifth aspect of the present invention provides a base station, comprising:
at least one processor;
a memory communicatively coupled to the at least one processor; and
a transceiver for communicating with other devices;
wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the data transmission method of the first or third aspect.
A sixth aspect of the present invention provides a data transmission method, including the steps of:
receiving a switching command sent by a source base station, wherein the switching command comprises information of a target base station and a message for indicating that the target base station does not support UPIP;
and switching from the connection with the source base station to the connection with the target base station according to the switching command.
Optionally, the data transmission method further includes:
and if the PDU session established between the source base station and the target base station comprises the UPIP PDU session, sending a deactivation request of the UPIP PDU session to the target base station.
A seventh aspect of the present invention provides a data transmission apparatus, comprising:
a receiving module, configured to receive a handover command sent by a source base station, where the handover command includes information of a target base station and a message indicating that the target base station does not support UPIP;
and the switching module is used for switching from the connection with the source base station to the connection with the target base station according to the switching command.
Optionally, the data transmission apparatus further includes a sending module, configured to send a deactivation request of a UPIP PDU session to the target base station if the PDU session previously established with the source base station includes the UPIP PDU session.
An eighth aspect of the present invention provides a data transmission method, including:
monitoring system information of at least one base station, wherein the system information comprises indication information used for representing whether the base station or a cell in the base station supports UPIP or not;
selecting a target base station or a target cell supporting UPIP according to the system information;
and establishing connection with the target base station or the target cell.
A ninth aspect of the present invention provides a data transmission device, comprising:
the monitoring module is used for monitoring system information of at least one base station, wherein the system information comprises indication information used for representing whether the base station or a cell in the base station supports UPIP or not;
the selection module is used for selecting a target base station or a target cell supporting UPIP according to the system information;
a connection module, configured to establish a connection with the target base station or the target cell.
A tenth aspect of the present invention provides a user equipment comprising:
at least one processor;
a memory communicatively coupled to the at least one processor; and
a transceiver for communicating with other devices;
wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the data transmission method of the sixth or eighth aspect.
An eleventh aspect of the present invention provides a non-transitory computer-readable storage medium storing computer instructions for causing the computer to execute the above-described data transmission method.
The positive progress effects of the invention are as follows: and determining whether to send a handover command to the user equipment, namely determining whether to handover the user equipment from being connected with the source base station to being connected with the target base station or not based on the indication information for representing whether the target base station supports the UPIP. Compared with the network switching method in the prior art, the method selects whether to switch the network under the condition of determining whether the target base station supports the UPIP, can improve the stability of the UPIP PDU session of the user equipment, and further improves the user experience.
Drawings
Fig. 1 is a schematic diagram illustrating a method for switching connection between a UE and a gNB to connection between the UE and an eNB in the prior art.
Fig. 2 is a schematic diagram of a communication network architecture according to an embodiment of the present invention.
Fig. 3 is a flowchart of a data transmission method according to embodiment 1 of the present invention.
Fig. 4 is a flowchart of a data transmission method according to embodiment 2 of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
An exemplary application scenario of the embodiments of the present invention is described below.
The technical scheme of the invention can be applied to 4G (4Generation) and 3G communication systems, can also be applied to communication systems comprising 5G and 4G/3G, and can also be applied to various communication systems such as 6G, 7G and the like and 4G/3G communication systems which are new in the future. The technical solution of the present invention is also applicable to different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-event architecture (Vehicle-to-any-object communication) architecture, and the like, and the embodiments of the present invention are not limited thereto. The embodiment of the present invention is not limited to this, and the base station in the embodiment of the present invention may be a communication network providing a communication service for the terminal, and include a base station of a radio access network, may further include a base station controller of the radio access network, and may further include a device on the core network side. The base station controller is a device for managing a base station, such as a Base Station Controller (BSC) in a 2G network, a Radio Network Controller (RNC) in a 3G network, and a device for controlling and managing a base station in a future new communication system.
In an alternative implementation manner, fig. 2 is a schematic diagram of a communication network architecture provided in an embodiment of the present invention, and as shown in fig. 2, data communication is performed between a user equipment 130 and a base station 110 or a base station 120. A User Equipment (UE) in the embodiments of the present invention may refer to various types of access terminals, subscriber units, subscriber stations, mobile stations (mobile stations, MS), remote stations, remote terminals, mobile devices, user terminals, terminal equipment (terminal equipment), wireless communication devices, user agents, or user devices. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device, or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network, or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like, which are not limited in the embodiments of the present invention.
A Base Station (BS) in the embodiments of the present invention may also be referred to as a base station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, the device providing the base station function in the 2G network includes a Base Transceiver Station (BTS), the device providing the base station function in the 3G network includes a node B (NodeB), the device providing the base station function in the 4G network includes an evolved node B (eNB), and in a Wireless Local Area Network (WLAN), the device providing the base station function is an Access Point (AP), a device gNB providing the base station function in the 5G New Radio (NR), and a node B (ng-eNB) continuing to evolve, wherein the gNB and the terminal communicate with each other by using an NR technique, the ng-eNB and the terminal communicate with each other by using an E-a (evolved Universal Radio access) technique, and both the gNB and the ng-eNB are connected to a 5G core network (core network, abbreviated CN). The base station in the embodiment of the present invention further includes a device and the like that provide a function of the base station in a future new communication system. The embodiment of the present invention is not limited thereto.
Example 1
Fig. 3 is a flowchart of a data transmission method provided in this embodiment, where the method may be executed by a data transmission apparatus, the apparatus may be implemented by software and/or hardware, and the apparatus may include part or all of a base station. The following describes a data transmission method for the implementation subject in connection with a base station.
As shown in fig. 3, the data transmission method provided in this embodiment is applied to a source base station that establishes a connection with a user equipment, and may include the following steps S101 and S102:
and step S101, acquiring indication information for representing whether the target base station supports UPIP.
In an alternative embodiment, step S101 is performed during the network handover process. Specifically, step S101 includes steps S101a and S101 b:
step S101a, sending a switching requirement to a mobility management function; wherein the handover requirement includes information of a target base station and a request that requires the target base station to indicate whether UPIP is supported.
The mobility management function is located in a core network of the source base station, and when the core network of the source base station is a core network of a 5G network, the mobility management function is an access and mobility control function AMF. And when the core network of the source base station is the core network of the 4G network, the mobility management function is a mobility management entity MME of the 4G network.
In the specific implementation of step S101a, if the core network of the source base station and the core network of the target base station are different networks, the mobility management function in the core network of the source base station forwards the handover request to the mobility management function in the core network of the target base station, and the mobility management function in the core network of the target base station forwards the handover request to the target base station. If the core network of the source base station and the core network of the target base station are the same network, the mobility management function directly forwards the switching requirement to the target base station.
Step S101b, receiving indication information sent by the target base station and used for characterizing whether the target base station supports UPIP.
In an example of the implementation of step S101b, if the target base station supports UPIP, the request that requires the target base station to indicate whether UPIP is supported is ignored. And if the target base station does not support the UPIP, replying indication information for representing that the target base station does not support the UPIP.
In the above, if the core network of the source base station and the core network of the target base station are different networks, the target base station sends the indication information to the mobility management function located in the core network of the target base station, the mobility management function located in the core network of the target base station forwards the indication information to the mobility management function located in the core network of the source base station, and the mobility management function located in the core network of the source base station forwards the indication information to the source base station. And if the core network of the source base station and the core network of the target base station are the same network, the target base station sends the indication information to a mobility management function in the core network of the target base station, and the mobility management function forwards the indication information to the source base station.
In an alternative embodiment, step S101 is performed before switching networks. Specifically, step S101 includes monitoring system information of a target base station over a wireless air interface, and acquiring indication information used for representing whether the target base station supports UPIP from the system information.
In this embodiment, the target base station broadcasts the system information through a wireless air interface, and the source base station monitors the system information of the target base station through the wireless air interface. Wherein the system information includes indication information for indicating whether the target base station supports UPIP. In one example of implementation, a bit in the system information SIB1 is used to indicate whether UPIP is supported. In another example of an implementation, a bit in the system information SIB3 is used to indicate whether UPIP is supported.
In another optional implementation manner, the ue monitors system information of nearby base stations, and obtains indication information for characterizing whether the base station supports UPIP from the system information. And the user equipment reports the measurement report of the nearby base station to the source base station, wherein the measurement report comprises the indication information, and the source base station selects the target base station from the measurement report. In one specific example, the source base station preferentially selects a base station supporting UPIP as the target base station. In another specific example, the ue only reports measurement reports of the UPIP-capable base stations to the source base station, and the source base station selects the target base station from the measurement reports.
And step S102, determining whether to send a switching command to the user equipment based on the indication information. Wherein the handover command is used for instructing the user equipment to handover from connection with a source base station to connection with the target base station. The handover command in this embodiment is used to switch the network to which the ue is connected, i.e. to switch the ue from connecting to the currently connected base station to connecting to another base station.
It should be noted that the core networks of the source base station and the target base station may be the same network or different networks. In a specific example, the base station 110 shown in fig. 2 is a source base station, the base station 120 is a target base station, and the user equipment 130 switches from connecting with the base station 110 to connecting with the base station 120 after receiving the handover command. In another specific example, the base station 120 shown in fig. 2 is a source base station, the base station 110 is a target base station, and the user equipment 130 switches from connecting with the base station 120 to connecting with the base station 110 after receiving the handover command.
In an optional implementation manner of step S102, if the indication information indicates that the target base station supports UPIP, a handover command is sent to the user equipment.
In another optional implementation manner of step S102, if the indication information indicates that the target base station does not support UPIP, a handover command is sent to the user equipment, where the handover command includes information of the target base station and a message used for indicating that the target base station does not support UPIP.
In another optional implementation manner of step S102, if the indication information indicates that the target base station does not support UPIP, it is determined whether to send a handover command to the user equipment according to a PDU session established with the user equipment.
In a specific implementation, a PDU session established between a source base station and a user equipment includes the following three cases:
in the first case, if the PDU session established with the ue only includes the UPIP PDU session, no handover command is sent to the ue, i.e. no network handover is performed.
And secondly, if the PDU session established between the UE and the UE comprises a UPIP PDU session and a non-UPIP PDU session, sending a switching command to the UE, wherein the switching command comprises a resource request of the PDU session to be switched, and the PDU session to be switched only comprises the non-UPIP PDU session. In this embodiment, since the target base station does not support UPIP, the source base station only switches the non-UPIP PDU session with the user equipment to the target base station.
In an embodiment that is optional in the second case, the data transmission method further includes:
a request for deactivation of the UPIP PDU session is sent to the mobility management function. In this embodiment, after receiving the handover command, the user equipment establishes a connection with the target base station, and the source base station needs to send a deactivation request of the UPIP PDU session to a mobility management function located in a core network of the source base station, thereby avoiding a situation that the UPIP PDU session established before the user equipment is disconnected from the source base station occupies network resources.
The UPIP PDU session means a PDU session requiring UPIP, and the non-UPIP PDU session means a PDU session not requiring UPIP.
In a specific implementation example, the deactivation request sent by the source base station to the mobility management function carries a deactivation reason, where the deactivation reason is that the target base station does not support UPIP. In this embodiment, the mobility management function may implement network analysis by recording the deactivation reason sent by the source base station. For example, if there are more reasons for deactivating the UPIP PDU session by the source base station that the target base station does not support the UPIP, the target base station may be subsequently upgraded to support the UPIP so as to improve the stability of the UPIP PDU session. If the reason that the target base station does not support the UPIP is the reason that the source base station deactivates the UPIP PDU session, the target base station is not upgraded temporarily, so that the cost is saved.
And thirdly, if the PDU session established between the user equipment and the user equipment only comprises a non-UPIP PDU session, sending a switching command to the user equipment, wherein the switching command comprises a resource request of the PDU session to be switched, and the PDU session to be switched is the non-UPIP PDU session.
In step S102, if the source base station determines to send a handover command to the user equipment, the user equipment receives the handover command sent by the source base station, and switches from being connected with the source base station to being connected with the target base station according to the handover command. Wherein the handover command includes information of the target base station.
In an optional implementation manner, if the target base station does not support UPIP, the handover command further includes a message for indicating that the target base station does not support UPIP. In this embodiment, the source base station notifies the ue that the target base station does not support UPIP, so that the ue can manage the UPIP PDU session conveniently.
In an alternative embodiment, if the target base station does not support UPIP and the PDU session previously established between the ue and the source base station includes UPIP PDU session, a deactivation request of the UPIP PDU session is sent to the target base station after the ue completes network handover. In this embodiment, the UPIP PDU session established between the source base station and the user equipment is switched to the target base station that does not support UPIP, and then the user equipment sends a deactivation request of the UPIP PDU session to the target base station, thereby avoiding the occurrence of the situation that although the connection is established between the user equipment and the target base station, the UPIP service cannot be actually performed in the UPIP PDU session.
Compared with the network switching method in the prior art, the embodiment selects whether to switch the network under the condition that whether the target base station supports the UPIP is determined, so that the stability of the UPIP PDU session of the user equipment can be improved, and the user experience is further improved.
The embodiment also provides a data transmission device, which comprises an acquisition module and a determination module.
The acquisition module is used for acquiring indication information for representing whether the target base station supports the UPIP.
The determining module is configured to determine whether to send a handover command to the user equipment based on the indication information, where the handover command is used to instruct the user equipment to handover from being connected with the source base station to being connected with the target base station.
In an optional embodiment, the obtaining module includes:
a sending unit, configured to send a handover request to a mobility management function; wherein the handover requirement includes information of a target base station and a request that requires the target base station to indicate whether to support UPIP;
and the receiving unit is used for receiving the indication information which is sent by the target base station and used for representing whether the target base station supports the UPIP or not.
In an optional implementation manner, the obtaining module is specifically configured to monitor system information of a target base station, and obtain indication information used for representing whether the target base station supports UPIP from the system information.
In an optional implementation manner, the determining module is specifically configured to send a handover command to the user equipment when the indication information indicates that the target base station does not support UPIP, where the handover command includes a message for indicating that the target base station does not support UPIP.
In an optional implementation manner, the determining module is specifically configured to send a handover command to the user equipment when the indication information indicates that the target base station supports UPIP.
In an optional implementation manner, the determining module is specifically configured to determine whether to send a handover command to the user equipment according to a PDU session established with the user equipment, when the indication information indicates that the target base station does not support UPIP.
In an optional implementation manner, the indication information indicates that the target base station does not support UPIP, and the determining module is specifically configured to, when the PDU session established with the user equipment only includes a UPIP PDU session, not send a handover command to the user equipment;
in an optional implementation manner, the indication information indicates that the target base station does not support UPIP, and the determining module is specifically configured to send a handover command to the user equipment when a PDU session established with the user equipment includes a UPIP PDU session and a non-UPIP PDU session, where the handover command includes a resource request of the PDU session to be handed over, and the PDU session to be handed over includes only the non-UPIP PDU session.
In an optional implementation manner, the data transmission apparatus further includes a sending module, configured to send a deactivation request of a UPIP PDU session to a mobility management function in a case that it is determined that the handover command is sent to the user equipment.
In an optional embodiment, the deactivation request carries a deactivation reason, where the deactivation reason is that the target base station does not support the UPIP.
The embodiment also provides a data transmission device, which includes a broadcasting module, configured to broadcast system information, where the system information includes indication information used to indicate whether a base station supports UPIP.
Example 2
The data transmission method provided by this embodiment may be executed by a data transmission apparatus, which may be implemented by software and/or hardware, and the apparatus may include part or all of the user equipment. The following describes a data transmission method for the execution subject in conjunction with the user equipment.
The data transmission method provided by the embodiment includes the following steps S201 and S202:
step S201, receiving a handover command sent by a source base station, where the handover command includes information of a target base station and a message for indicating that the target base station does not support UPIP.
And step S202, switching from connection with a source base station to connection with the target base station according to the switching command.
In an optional implementation manner, the data transmission method further includes:
step S203, if the PDU session established between the source base station and the target base station includes UPIP PDU session, a deactivation request of the UPIP PDU session is sent to the target base station.
The embodiment also provides a data transmission device, which comprises a receiving module and a switching module.
The receiving module is used for receiving a switching command sent by a source base station, wherein the switching command comprises information of a target base station and a message for indicating that the target base station does not support UPIP.
And the switching module is used for switching from the connection with the source base station to the connection with the target base station according to the switching command.
In an optional implementation manner, the data transmission apparatus further includes a sending module, configured to send a deactivation request of a UPIP PDU session to the target base station in a case that a PDU session previously established with the source base station includes the UPIP PDU session.
Example 3
Fig. 4 is a flowchart of a data transmission method provided in this embodiment, where the method may be executed by a data transmission apparatus, the apparatus may be implemented by software and/or hardware, and the apparatus may include part or all of user equipment. The following describes a data transmission method for the execution subject by the ue.
As shown in fig. 4, the data transmission method provided in this embodiment is applied to the user equipment in the idle state, and may include the following steps S401 and S403:
step S401, monitoring system information of at least one base station, wherein the system information includes indication information for representing whether the base station or a cell in the base station supports UPIP.
In this embodiment, a base station sends system information through a wireless air interface, where the system information includes an indication message used to indicate whether the base station or a cell in the base station supports UPIP, and a user equipment in an idle state monitors the system information of each base station through the wireless air interface.
And S402, selecting a target base station or a target cell supporting UPIP according to the system information. And the user equipment selects a base station supporting UPIP from all base stations as a target base station according to the monitored system information, or selects a cell supporting UPIP from the base stations as a target cell.
And step S403, establishing connection with the target base station or the target cell. And the user equipment establishes connection with the target base station or the target cell and establishes a UPIP PDU session with the target base station or the target cell under the condition that the user equipment has a UPIP service requirement.
In this embodiment, the user equipment in the idle state establishes a connection only with the target base station or the target cell supporting the UPIP based on the monitored system information, so that the user equipment can process the UPIP service, thereby improving user experience.
The embodiment further provides a data transmission device, which comprises a monitoring module, a selecting module and a connecting module.
The monitoring module is used for monitoring system information of at least one base station, wherein the system information comprises indication information used for representing whether the base station or a cell in the base station supports UPIP.
And the selection module is used for selecting the target base station or the target cell supporting the UPIP according to the system information.
The connection module is used for establishing connection with the target base station or the target cell.
Example 4
An embodiment of the present invention provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the data transmission method in embodiment 1, embodiment 2, or embodiment 3.
More specific examples, among others, that the readable storage medium may employ may include, but are not limited to: a portable disk, a hard disk, random access memory, read only memory, erasable programmable read only memory, optical storage device, magnetic storage device, or any suitable combination of the foregoing.
In a possible implementation manner, the present invention can also be implemented in the form of a program product including program code for causing a terminal device to execute a method of implementing the data transmission in embodiment 1, embodiment 2 or embodiment 3 when the program product is run on the terminal device.
Where program code for carrying out the invention is written in any combination of one or more programming languages, the program code may be executed entirely on the user device, partly on the user device, as a stand-alone software package, partly on the user device and partly on a remote device or entirely on the remote device.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims (27)

1. A data transmission method, comprising the steps of:
acquiring indication information for representing whether a target base station supports UPIP or not;
and determining whether to send a handover command to the user equipment based on the indication information, wherein the handover command is used for indicating the user equipment to switch from being connected with a source base station to being connected with the target base station.
2. The data transmission method according to claim 1, wherein the obtaining of the indication information for characterizing whether the target base station supports UPIP specifically includes:
sending a handover request to a mobility management function; the switching requirement comprises information of a target base station and a request for indicating whether the target base station supports UPIP or not;
and receiving indication information which is sent by the target base station and used for representing whether the target base station supports UPIP or not.
3. The data transmission method according to claim 1, wherein the obtaining of the indication information for characterizing whether the target base station supports UPIP specifically includes:
monitoring system information of a target base station, and acquiring indication information for representing whether the target base station supports UPIP from the system information.
4. The data transmission method according to claim 1, wherein the determining whether to send the handover command to the ue based on the indication information specifically includes:
if the indication information represents that the target base station does not support UPIP, sending a switching command to user equipment, wherein the switching command comprises a message for indicating that the target base station does not support UPIP;
and/or the presence of a gas in the atmosphere,
and if the indication information represents that the target base station supports UPIP, sending a switching command to the user equipment.
5. The data transmission method according to claim 1, wherein the determining whether to send the handover command to the ue based on the indication information specifically includes:
and if the indication information represents that the target base station does not support UPIP, determining whether to send a switching command to the user equipment according to a PDU session established between the user equipment and the target base station.
6. The data transmission method as claimed in claim 5, wherein the determining whether to send the handover command to the ue according to the PDU session established with the ue specifically comprises:
if the PDU session established between the user equipment and the user equipment only comprises the UPIP PDU session, a switching command is not sent to the user equipment;
and/or the presence of a gas in the gas,
if the PDU session established between the user equipment and the user equipment comprises a UPIP PDU session and a non-UPIP PDU session, sending a switching command to the user equipment, wherein the switching command comprises a resource request of the PDU session to be switched, and the PDU session to be switched only comprises the non-UPIP PDU session.
7. The data transmission method of claim 5, wherein in case it is determined to send a handover command to the user equipment, the data transmission method further comprises:
a deactivation request for a UPIP PDU session is sent to a mobility management function.
8. The data transmission method according to claim 7, wherein the deactivation request carries a deactivation reason, and the deactivation reason is that the target base station does not support UPIP.
9. A data transmission apparatus, comprising:
the acquisition module is used for acquiring indication information for representing whether the target base station supports UPIP or not;
and a determining module, configured to determine whether to send a handover command to the user equipment based on the indication information, where the handover command is used to instruct the user equipment to switch from connecting with the source base station to connecting with the target base station.
10. The data transmission apparatus of claim 9, wherein the obtaining module comprises:
a sending unit, configured to send a handover request to a mobility management function; wherein the handover requirement includes information of a target base station and a request that requires the target base station to indicate whether to support UPIP;
and the receiving unit is used for receiving the indication information which is sent by the target base station and used for representing whether the target base station supports the UPIP or not.
11. The data transmission apparatus according to claim 9, wherein the obtaining module is specifically configured to monitor system information of a target base station, and obtain indication information used for indicating whether the target base station supports UPIP from the system information.
12. The data transmission apparatus of claim 9, wherein the determining module is specifically configured to send a handover command to a user equipment if the indication information indicates that a target base station does not support UPIP, wherein the handover command includes a message indicating that the target base station does not support UPIP,
and/or the presence of a gas in the gas,
the determining module is specifically configured to send a handover command to the user equipment when the indication information indicates that the target base station supports UPIP.
13. The data transmission apparatus according to claim 9, wherein the determining module is specifically configured to determine whether to send the handover command to the ue according to a PDU session established with the ue, when the indication information indicates that the target base station does not support UPIP.
14. The data transmission apparatus of claim 13, wherein the indication information characterizes that the target base station does not support UPIP,
the determining module is specifically configured to, in a case that a PDU session established with a user equipment only includes a upip PDU session, not send a handover command to the user equipment;
and/or the presence of a gas in the gas,
the determining module is specifically configured to send a handover command to the user equipment when the PDU session established with the user equipment includes a UPIP PDU session and a non-UPIP PDU session, where the handover command includes a resource request of the PDU session to be handed over, and the PDU session to be handed over only includes the non-UPIP PDU session.
15. The data transmission apparatus according to claim 13, wherein the data transmission apparatus further comprises a sending module, configured to send a deactivation request of a UPIP PDU session to a mobility management function in case that it is determined to send the handover command to the user equipment.
16. The data transmission apparatus according to claim 15, wherein the deactivation request carries a deactivation reason, and the deactivation reason is that the target base station does not support UPIP.
17. A data transmission method, characterized in that the data transmission method comprises the steps of:
broadcasting system information, wherein the system information comprises indication information for indicating whether a base station supports UPIP.
18. A data transmission apparatus, comprising a broadcasting module configured to broadcast system information, wherein the system information includes indication information indicating whether a base station supports UPIP.
19. A base station, comprising:
at least one processor;
a memory communicatively coupled to the at least one processor; and
a transceiver for communicating with other devices;
wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the data transfer method of any one of claims 1-8 or 17.
20. A data transmission method, characterized in that the data transmission method comprises the steps of:
receiving a switching command sent by a source base station, wherein the switching command comprises information of a target base station and a message for indicating that the target base station does not support UPIP;
and switching from the connection with the source base station to the connection with the target base station according to the switching command.
21. The data transmission method of claim 20, wherein the data transmission method further comprises:
and if the PDU session established between the source base station and the target base station comprises the UPIP PDU session, sending a deactivation request of the UPIP PDU session to the target base station.
22. A data transmission apparatus, comprising:
a receiving module, configured to receive a handover command sent by a source base station, where the handover command includes information of a target base station and a message indicating that the target base station does not support UPIP;
and the switching module is used for switching from the connection with the source base station to the connection with the target base station according to the switching command.
23. The data transmission apparatus of claim 22, wherein the data transmission apparatus further comprises a sending module for sending a deactivation request for a UPIP PDU session to the target base station if the PDU session previously established with the source base station comprises a UPIP PDU session.
24. A data transmission method, characterized in that the data transmission method comprises:
monitoring system information of at least one base station, wherein the system information comprises indication information used for representing whether the base station or a cell in the base station supports UPIP;
selecting a target base station or a target cell supporting UPIP according to the system information;
and establishing connection with the target base station or the target cell.
25. A data transmission apparatus, comprising:
the monitoring module is used for monitoring system information of at least one base station, wherein the system information comprises indication information used for representing whether the base station or a cell in the base station supports UPIP or not;
the selection module is used for selecting a target base station or a target cell supporting UPIP according to the system information;
a connection module, configured to establish a connection with the target base station or the target cell.
26. A user device, comprising:
at least one processor;
a memory communicatively coupled to the at least one processor; and
a transceiver for communicating with other devices;
wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the data transfer method of any one of claims 20-21 or 24.
27. A non-transitory computer readable storage medium storing computer instructions for causing a computer to perform the data transmission method of any one of claims 1 to 8, 17 or 20 to 21, 24.
CN202011578833.8A 2020-12-28 2020-12-28 Data transmission method and device, base station, user equipment and storage medium Pending CN114697968A (en)

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US20200037165A1 (en) * 2018-07-30 2020-01-30 Lenovo (Singapore) Pte. Ltd. Security protection for user plane traffic
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