WO2021062770A1

WO2021062770A1 - Wireless communication method and apparatus

Info

Publication number: WO2021062770A1
Application number: PCT/CN2019/109693
Authority: WO
Inventors: 于海凤; 李秉肇; 陈磊; 王宏
Original assignee: 华为技术有限公司
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2021-04-08

Abstract

Provided are a wireless communication method and apparatus, wherein same can help to reduce the frequency of a terminal device performing TAU reporting, can save on air interface signaling overheads, and can reduce the power consumption of the terminal device. In the embodiments of the present application, a terminal device initiates a tracking area location update process when detecting that a SIM card has moved out of an area corresponding to a TAI set, such that a TAU process initiated when the terminal device detects, with a first user identity, that the SIM card has moved out of an area corresponding to a first TAI list and enters an area corresponding to a second TAI list can be prevented and a TAU process initiated when the terminal device detects, with a second user identity, that the SIM card has moved out of the area corresponding to the second TAI list and enters the area corresponding to the first TAI list can be prevented. Therefore, the frequency of a terminal device performing TAU reporting is reduced, air interface signaling overheads are saved, the power consumption of the terminal device is reduced, and the operating efficiency of a communication system is improved.

Description

Method and device for wireless communication

Technical field

This application relates to the field of communication, and more specifically, to methods and devices for wireless communication.

Background technique

With the development of communication technology, many terminal devices (such as mobile phones) are equipped to support dual card dual standby. Dual card dual standby means that the terminal device can insert two subscriber identity module (SIM) or universal integrated circuit card (UICC) cards at the same time, and the two cards can be on standby at the same time. Take the dual-card dual-standby terminal device supporting two SIM cards as an example. The two SIM cards can belong to the same communication standard, such as supporting the same radio access technology (RAT), such as long-term evolution (long term evolution, LTE) or new radio (NR). The two SIM cards can also belong to different communication standards. For example, one SIM card supports LTE and the other SIM card supports NR. Another example is that one SIM card supports universal mobile telecommunication system (UMTS). A SIM card supports code division multiple access (CDMA), etc.

For a terminal device that supports two SIM cards, the two SIM cards are registered in two access networks respectively. When the terminal device moves in the tracking area (TA) corresponding to these two networks, as long as a SIM card moves out of the tracking area list (TA) corresponding to its own network, it will trigger the tracking area update (TAU) ). In this way, it may cause the terminal equipment to frequently report TAUs, resulting in an increase in air interface signaling overhead.

Therefore, there is an urgent need for a solution to solve the problem of frequent TAU reporting by terminal devices with dual SIM cards.

Summary of the invention

The present application provides a wireless communication method and device, which can help reduce frequent TAU reporting by terminal equipment, save air interface signaling overhead, reduce power consumption of terminal equipment, and improve the operating efficiency of the communication system.

In the first aspect, a wireless communication method is provided, and the method is executed by a terminal device or a component (for example, a chip or a circuit, etc.) configurable in the terminal device. In the following, the method is executed by a terminal device as an example for description.

In this method, the terminal device determines the first area corresponding to the tracking area identification TAI set, where the first area includes the area corresponding to the first TAI list and the area corresponding to the second TAI list, and the first TAI list is The first user identity of the terminal device is associated, and the second TAI list is associated with the second user identity of the terminal device. When detecting moving out of the first area, the terminal device initiates a tracking area update TAU process.

Therefore, in the embodiment of the present application, the terminal device initiates the tracking area location update process when detecting that it has moved out of the area corresponding to the TAI set, which can prevent the terminal device from detecting the movement out of the area corresponding to the first TAI list as the first user. And the TAU process initiated when entering the area corresponding to the second TAI list, and to prevent the terminal device from detecting as the second user when it moves out of the area corresponding to the second TAI list and enters the area corresponding to the first TAI list. The TAU process can help reduce frequent TAU reporting by terminal equipment, save air interface signaling overhead, and reduce power consumption of terminal equipment.

With reference to the first aspect, in some implementations of the first aspect, the communication standard of the first user identity is the first communication standard, and the communication standard of the second user identity is the second communication standard. When the first communication standard is different from the second communication standard, the TAI set is determined according to the first TAI list and the third TAI list, and the third TAI list is based on the TAI of the first communication standard and the second communication standard The mapping relationship between the TAIs is obtained by converting the second TAI list.

Therefore, in the embodiment of the present application, the terminal device can convert the TAI lists of the two user identities according to the conversion relationship between the TAIs of the two communication standards when the supported communication modes of the two user identities are different. , So that when the two communication standards are different, the terminal device can still initiate the tracking area location update process when it detects that it has moved out of the area corresponding to the TAI set, which can help reduce frequent TAU reporting by the terminal device and save air interface Signaling overhead reduces the power consumption of terminal equipment.

In some possible implementations, the first communication standard may be the same as the second communication standard. At this time, the TAI set includes a first TAI list and a second TAI list.

With reference to the first aspect, in some implementation manners of the first aspect, the foregoing mapping relationship comes from the first core network device or the second core network device. The first core network device is a device in the network to which the terminal device is registered as the first user, and the second core network device is a device in the network to which the terminal device is registered as the second user. Or, in other possible implementation manners, the mapping relationship may be predefined in the terminal device.

With reference to the first aspect, in some implementation manners of the first aspect, the TAI set comes from the first core network device or the second core network device. Or, in other possible implementation manners, the TAI set may be predefined in the terminal device. In this way, the terminal device may not perceive the mapping relationship between the TAI of the first communication standard and the TAI of the second communication standard, which further saves energy consumption of the terminal device.

With reference to the first aspect, in some implementation manners of the first aspect, the terminal device may also determine to enable the TAU optimization function according to the first indication information, the first indication information being from the first core network device. In this way, the core network device can determine whether to enable the TAU optimization function according to needs.

As an example, for the first user identity of the terminal device, the TAU optimization function means that when the terminal device moves within the first area as the first user, the tracking area location update is not performed. When it is detected that the terminal device moves out of the first area as the first user, the tracking area location update process is initiated.

As another example, for the second user identity of the terminal device, the TAU optimization function means that when the terminal device moves in the first area as the second user identity, no tracking area location update is performed. When the second user identity detects that the terminal device moves out of the first area, it initiates the tracking area location update process.

With reference to the first aspect, in some implementations of the first aspect, the terminal device may also use the identity of the first user to send second indication information to the first core network device, where the second indication information is used for Instruct the terminal device to support the TAU optimization function.

In this way, the core network device can determine whether to enable the TAU optimization function of the terminal device according to whether the terminal device has (that is, supports) the capability of the TAU optimization function.

With reference to the first aspect, in some implementations of the first aspect, the terminal device may use the identity of the first user to send a first request for updating the tracking area to the first core network device. In the first request, The first terminal device identifier corresponding to the first user identity of the terminal device is included, and the first terminal device identifier is determined according to the second terminal device identifier pre-stored by the terminal device, wherein the second terminal device The identification is related to whether the TAU optimization function of the first user identity of the terminal device is enabled. In this way, the core network device can determine whether the TAU optimization function of the first user identity is enabled according to the first terminal device identifier in the first request.

With reference to the first aspect, in some implementation manners of the first aspect, the first terminal device identifier is a globally unique temporary identifier GUTI under the first communication standard.

With reference to the first aspect, in some implementations of the first aspect, the terminal device may also receive a second paging message as the second user, and the second paging message is used to list in the second TAI list. In the corresponding area, page the first user identity of the terminal device. In this way, the core network device can page the first user identity of the terminal device in the area corresponding to the second TAI list.

With reference to the first aspect, in some implementations of the first aspect, the second paging message includes third indication information, and the third indication information is used to indicate that the second paging message is for the The first user identity of the terminal device performs paging. In this way, the network device can display and indicate that the second paging message is for paging the first user identity of the terminal device.

Exemplarily, the second paging message may include a field for indicating a paging type, and the paging type field is indicated by using an extension field.

With reference to the first aspect, in some implementation manners of the first aspect, the terminal device may also receive a third paging message as the second user, and the third paging message is used in the second TAI Paging the second user identity of the terminal device in the area corresponding to the list.

Wherein, the second paging message is transmitted through a second paging configuration and/or a second paging physical resource, and the third paging message is transmitted through a first paging configuration and/or a first paging physical resource; or,

The physical downlink control channel PDCCH corresponding to the second paging message is scrambled by the second paging radio network temporary identification P-RNTI, and the PDCCH corresponding to the third paging message is scrambled by the first P-RNTI of.

In this way, the network device can implicitly indicate that the second paging message is for paging the first user identity of the terminal device. For the terminal device, the paging message transmission mode or configuration parameters can be used for the terminal device. Or the scrambling method of the PDCCH corresponding to the paging message determines which user identity the paging message is sent to.

In a second aspect, a wireless communication method is provided, which is executed by a core network device or a component (for example, a chip or a circuit, etc.) configurable in the core network device. In the following, the method is executed by the core network device as an example for description. As an example, the core network device is a device in the network to which the terminal device is registered as the first user.

In this method, the core network device determines the first area corresponding to the tracking area identification TAI set, where the first area includes the area corresponding to the first TAI list and the area corresponding to the second TAI list, and the first TAI The list is associated with the first user identity of the terminal device, and the second TAI list is associated with the second user identity of the terminal device. Then, in the first area, the core network device pages the terminal device of the first user identity.

Therefore, in this embodiment of the application, the core network device is used to page the terminal device in the first area corresponding to the TAI set, and the terminal device can initiate a tracking area location update when the terminal device detects that it has moved out of the area corresponding to the TAI set. During the process, the core network device is implemented to page the first user identity of the terminal device in the area corresponding to the TAI set. Therefore, the embodiments of the present application can help reduce frequent TAU reporting by terminal devices, save air interface signaling overhead, reduce power consumption of terminal devices, and at the same time realize paging of terminal devices in the area corresponding to the TAI set.

With reference to the second aspect, in some implementations of the second aspect, the communication standard of the first user identity is the first communication standard, and the communication standard of the second user identity is the second communication standard. When the first communication standard is different from the second communication standard, the TAI set is determined according to the first TAI list and the third TAI list, and the third TAI list is based on the TAI of the first communication standard and the second communication standard The mapping relationship between the TAIs is obtained by converting the second TAI list.

Therefore, in the embodiment of the present application, the core network device is able to determine the TAI of the two user identities based on the conversion relationship between the TAI of the two communication standards when the communication modes of the two user identities supported by the terminal device are different. The list is converted, so that when the two communication standards are different, the core network device can page the first user identity of the terminal device in the area corresponding to the TAI set.

With reference to the second aspect, in some implementations of the second aspect, the core network device may send a paging message to the terminal device of the first user identity in the first area, and the paging message Including the terminal device identifier associated with the first user identity.

Therefore, in the embodiment of the present application, the core network device is used to page the terminal device in the first area corresponding to the TAI set, and the terminal device can initiate the tracking area location update process when the terminal device detects that it moves out of the first area. , To realize the paging of the first user identity of the terminal device by the core network device. Therefore, the embodiments of the present application can help reduce frequent TAU reporting by terminal devices, save air interface signaling overhead, reduce power consumption of terminal devices, and simultaneously implement paging for terminal devices in the first area.

With reference to the second aspect, in some implementations of the second aspect, the core network device may send a first paging message to the terminal device of the first user identity in the area corresponding to the first TAI list , The first paging message includes a terminal device identifier associated with the first user identity.

Then, the core network device may send a second paging message to the second core network device, where the second paging message is used to contact the first user identity in the area corresponding to the second TAI list. The terminal device performs paging. The second core network device is a device in the network where the terminal device is registered as the second user.

Therefore, in the embodiment of the present application, the core network device is used to page the terminal device in the area corresponding to the first TAI list, and the second core network device is used to page the terminal device in the area corresponding to the second TAI list. When the terminal device detects that it moves out of the first area, and initiates the tracking area location update process, the second core network device can page the first user identity of the terminal device. Therefore, the embodiments of the present application can help reduce frequent TAU reporting by terminal devices, save air interface signaling overhead, reduce power consumption of terminal devices, and simultaneously implement paging for terminal devices in the first area.

With reference to the second aspect, in some implementations of the second aspect, the second paging message includes third indication information, and the third indication information is used to indicate that the second paging message is for the The terminal device of the first user identity performs paging. In this way, the network device can display and indicate that the second paging message is for paging the first user identity of the terminal device.

With reference to the second aspect, in some implementation manners of the second aspect, the core network device may also send the TAI set to the terminal device of the first user identity.

With reference to the second aspect, in some implementations of the second aspect, the core network device may also send to the terminal device of the first user identity the difference between the TAI of the first communication standard and the TAI of the second communication standard. The mapping relationship, wherein the first communication standard is the communication standard of the first user identity, and the second communication standard is the communication standard of the second user identity.

With reference to the second aspect, in some implementations of the second aspect, the core network device may also send first indication information to the terminal device of the first user identity, where the first indication information is used to enable tracking District update TAU optimization function. Therefore, the core network device in the embodiment of the present application can determine whether to enable the TAU optimization function according to needs.

With reference to the second aspect, in some implementations of the second aspect, the core network device may also receive second indication information sent by the terminal device as the first user, and the second indication information is used to indicate The terminal device supports the TAU optimization function.

With reference to the second aspect, in some implementations of the second aspect, the core network device may also receive a first request for updating the tracking area sent by the terminal device as the first user, and the first request Includes the first terminal device identifier corresponding to the first user identity of the terminal device, and the first terminal device identifier is determined according to the second terminal device identifier pre-stored by the terminal device, where the second terminal The device identifier is related to whether the TAU function of the first user identity of the terminal device is enabled.

With reference to the second aspect, in some implementation manners of the second aspect, the first terminal device identifier is a globally unique temporary identifier GUTI under the first communication standard.

In a third aspect, a wireless communication method is provided, and the method is executed by an access network device or a component (for example, a chip or a circuit, etc.) configurable in the access network device. The following describes the method executed by the access network device as an example.

In this method, the access network device determines a second paging message, and the second paging message is used to page the terminal device of the first user identity in the area corresponding to the second TAI list, where all The terminal device supports the first user identity and the second user identity, and the second TAI list is associated with the second user identity. Then, the access network device sends the second paging message to the terminal device with the second user identity in the area corresponding to the second TAI list.

In this way, the core network device can page the first user identity of the terminal device through the access network device in the area corresponding to the second TAI list.

In one example, determining the second paging message includes receiving the second paging message from a core network device. Then, the access network device can convert the second paging message into a paging message in the format of the access network.

With reference to the third aspect, in some implementations of the third aspect, the second paging message includes third indication information, and the third indication information is used to indicate that the second paging message is for the The terminal device of the first user identity performs paging.

In this way, the network device can display and indicate that the second paging message is for paging the first user identity of the terminal device.

With reference to the third aspect, in some implementations of the third aspect, the method further includes sending a third paging message, where the third paging message is used to address the second TAI list in the area corresponding to the second TAI list. 2. The terminal device of the user identity performs paging;

The PDCCH corresponding to the second paging message is scrambled by the second P-RNTI, and the PDCCH corresponding to the third paging message is scrambled by the first P-RNTI.

In a fourth aspect, an embodiment of the present application provides a wireless communication device, which is used to execute the above-mentioned first aspect or the method in any possible implementation of the first aspect. Specifically, the device includes a device for executing the above-mentioned first aspect. The module of the method in any possible implementation manner of the first aspect or the first aspect includes, for example, a processing unit and a transceiver unit. Exemplarily, the wireless communication device may be a communication device, or a chip or other component provided in the communication device. Exemplarily, the wireless communication apparatus may be a terminal device. The following takes the wireless communication device as a terminal device as an example.

The processing unit is configured to determine a first area corresponding to a TAI set of tracking area identifiers, where the first area includes an area corresponding to a first TAI list and an area corresponding to a second TAI list, and the first TAI list It is associated with the first user identity of the terminal device, and the second TAI list is associated with the second user identity of the terminal device.

The transceiver unit is configured to initiate a tracking area update TAU process when it is detected that it moves out of the first area.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the TAI set is determined according to the first TAI list and the third TAI list, and the third TAI list is the TAI according to the first communication standard. The mapping relationship between the TAI and the TAI of the second communication standard is obtained by converting the second TAI list, wherein the first communication standard is the communication standard of the first user identity, and the second communication standard is The communication standard of the second user identity.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the mapping relationship comes from the first core network device or the second core network device.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the TAI set comes from the first core network device or the second core network device.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the processing unit is further configured to determine to enable the TAU optimization function according to the first indication information, and the first indication information comes from the first core network. equipment.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiving unit is further configured to use the identity of the first user to send second indication information to the first core network device, and the second indication The information is used to indicate that the terminal device supports the TAU optimization function.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the transceiver unit is specifically configured to:

As the first user identity, send a first request for updating the tracking area to the first core network device, where the first request includes the first terminal device identity corresponding to the first user identity of the terminal device, so The first terminal device identifier is determined according to the second terminal device identifier pre-stored by the terminal device, where the second terminal device identifier is related to whether the TAU optimization function of the first user identity of the terminal device is enabled or not .

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the first terminal device identifier is a globally unique temporary identifier GUTI under the first communication standard.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the transceiver unit is further configured to:

Receive a second paging message as the second user identity, where the second paging message is used to page the first user identity of the terminal device in an area corresponding to the second TAI list .

With reference to the fourth aspect, in some implementations of the fourth aspect, the second paging message includes third indication information, and the third indication information is used to indicate that the second paging message is for the The first user identity of the terminal device performs paging.

Receive a third paging message as the second user identity, where the third paging message is used to page the second user identity of the terminal device in the area corresponding to the second TAI list call;

In the fifth aspect, the embodiments of the present application provide a wireless communication device, which is used to execute the above-mentioned second aspect or the method in any possible implementation of the second aspect. Specifically, the device includes a device for executing the above-mentioned second aspect. The module of the method in any possible implementation manner of the aspect or the second aspect, for example, includes a processing unit and a transceiver unit. Exemplarily, the wireless communication device may be a communication device, or a chip or other component provided in the communication device. Exemplarily, the wireless communication apparatus may be a core network device. The following takes the wireless communication device as the core network device as an example.

The transceiver unit is configured to page the terminal device of the first user identity in the first area.

With reference to the fifth aspect, in some implementations of the fifth aspect, the TAI set is determined according to the first TAI list and the third TAI list, and the third TAI list is the TAI according to the first communication standard. The mapping relationship between the TAI and the TAI of the second communication standard is obtained by converting the second TAI list, wherein the first communication standard is the communication standard of the first user identity, and the second communication standard is all Describe the communication standard of the second user identity.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the transceiver unit is specifically configured to:

In the first area, a paging message is sent to the terminal device of the first user identity, where the paging message includes the terminal device identifier associated with the first user identity.

In the area corresponding to the first TAI list, send a first paging message to the terminal device of the first user identity, where the first paging message includes the terminal device identity associated with the first user identity ；

Sending a second paging message to a second core network device, where the second paging message is used to page the terminal device with the first user identity in an area corresponding to the second TAI list.

With reference to the fifth aspect, in some implementations of the fifth aspect, the second paging message includes third indication information, and the third indication information is used to indicate that the second paging message is for the The terminal device of the first user identity performs paging.

With reference to the fifth aspect, in some implementations of the fifth aspect, the transceiving unit is further configured to send the TAI set to the terminal device of the first user identity.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the transceiver unit is further configured to:

Sending the mapping relationship between the TAI of the first communication standard and the TAI of the second communication standard to the terminal device of the first user identity, where the first communication standard is the communication standard of the first user identity, The second communication standard is a communication standard of the second user identity.

With reference to the fifth aspect, in some implementations of the fifth aspect, the transceiving unit is further configured to send first indication information to the terminal device of the first user identity, and the first indication information is used to enable It can update the TAU optimization function in the tracking area.

With reference to the fifth aspect, in some implementations of the fifth aspect, the transceiving unit is further configured to receive second indication information sent by the terminal device as the first user, and the second indication information is used for Instruct the terminal device to support the TAU optimization function.

Receiving a first request for updating a tracking area sent by the terminal device as the first user identity, where the first request includes a first terminal device identifier corresponding to the first user identity of the terminal device, and The first terminal device identifier is determined according to the second terminal device identifier pre-stored by the terminal device, wherein the second terminal device identifier is related to whether the TAU function of the first user identity of the terminal device is enabled.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the first terminal device identifier is a globally unique temporary identifier GUTI under the first communication standard.

In the sixth aspect, the embodiments of the present application provide a wireless communication device, which is used to execute the method in the third aspect or any possible implementation of the third aspect. Specifically, the device includes a device for executing the third aspect. The module of the method in any possible implementation manner of the aspect or the third aspect, for example, includes a processing unit and a transceiver unit. Exemplarily, the wireless communication device may be a communication device, or a chip or other component provided in the communication device. Exemplarily, the wireless communication apparatus may be an access network device. Take the wireless communication device as an access network device as an example below.

The processing unit is configured to determine a second paging message, where the second paging message is used to page the terminal device of the first user identity in an area corresponding to the second TAI list, wherein the terminal The device supports the first user identity and the second user identity, and the second TAI list is associated with the second user identity.

The transceiving unit is further configured to send the second paging message to the terminal device of the second user identity in the area corresponding to the second TAI list.

In some examples, the processing unit may control the transceiver unit to receive the second paging message from the core network device. Then, the access network device can convert the second paging message into a paging message in the format of the access network.

With reference to the sixth aspect, in some implementations of the sixth aspect, the second paging message includes third indication information, and the third indication information is used to indicate that the second paging message is for the The terminal device of the first user identity performs paging.

With reference to the sixth aspect, in some implementation manners of the sixth aspect, the transceiver unit is specifically configured to:

Sending a third paging message, where the third paging message is used to page the terminal device of the second user identity in an area corresponding to the second TAI list;

Wherein, the second paging message is transmitted through a second paging configuration and/or a second paging physical resource, and the third paging message is transmitted through a first paging configuration and/or a first paging physical resource; Or the PDCCH corresponding to the second paging message is scrambled by the second P-RNTI, and the PDCCH corresponding to the third paging message is scrambled by the first P-RNTI.

In a seventh aspect, an embodiment of the present application provides a communication device, including a processor and a transceiver. Optionally, memory may also be included. Wherein, the memory is used to store instructions, the processor is used to execute instructions stored in the memory, and when the processor executes the instructions stored in the memory, the execution causes the processor to execute any one of the first aspect to the third aspect Aspect or any possible implementation of any aspect.

In an eighth aspect, the embodiments of the present application provide a computer-readable medium for storing a computer program, and the computer program includes a method for executing any one of the first to third aspects or any possible implementation of any one of the aspects The instructions in the method.

In a ninth aspect, the embodiments of the present application also provide a computer program product containing instructions. When the computer program product runs on a computer, the computer can execute any one or any of the first to third aspects. Any possible implementation method.

In a tenth aspect, a chip is provided, which includes a processor and a communication interface. The processor is used to call and execute instructions from the communication interface. When the processor executes the instructions, it implements the first aspect to the first aspect. A method in any one of the three aspects or any possible implementation of any one of the aspects.

Optionally, the chip may further include a memory in which instructions are stored, and the processor is configured to execute instructions stored in the memory or instructions derived from other sources. When the instruction is executed, the processor is used to implement any one of the foregoing first to third aspects or the method in any possible implementation manner of any one of the aspects.

In an eleventh aspect, a communication system is provided. The communication system includes a device capable of implementing the methods and various possible designs of the foregoing first aspect, and the foregoing has the methods and various possible designs that implement the foregoing second aspect. The device with the function of, and the device with the above-mentioned method and various possible design functions of the above-mentioned third aspect.

Description of the 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 an 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.

Figure 4 shows a schematic flow chart of a network device initiating paging to a terminal device.

Figure 5 shows a schematic diagram of the structure of the TAI list.

Fig. 6 shows a schematic flowchart of a TAU process initiated by a terminal device.

Fig. 7 shows a specific example of an application scenario of an embodiment of the present application.

FIG. 8 shows a schematic flowchart of a TAU method provided by an embodiment of the present application.

FIG. 9 shows a schematic flowchart of another TAU method provided by an embodiment of the present application.

FIG. 10 shows a schematic flowchart of another TAU method provided by an embodiment of the present application.

FIG. 11 shows a schematic flowchart of a paging method provided by an embodiment of the present application.

FIG. 12 shows a schematic flowchart of another paging method provided by an embodiment of the present application.

FIG. 13 shows a schematic flowchart of another paging method provided by an embodiment of the present application.

Fig. 14 shows a schematic diagram of a wireless communication device provided by an embodiment of the present application.

FIG. 15 is a schematic structural diagram of a terminal device provided by this application.

FIG. 16 is a schematic structural diagram of an access network device provided by an embodiment of this application.

Detailed ways

The technical solution in this application will be described below in conjunction with the accompanying drawings.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, broadband code division Multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, system architecture evolved (SAE) system, LTE Frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access, WiMAX) communication system, fifth generation (5G) system or new radio (NR), and subsequent evolution communication systems, etc.

The terminal equipment in the embodiments of this application may also be referred to as: user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, Mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device may be a device that provides voice/data connectivity to the user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and so on. At present, some examples of terminals are: mobile phones (mobile phones), tablet computers, notebook computers, handheld computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, and augmented reality. (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids Wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocols , SIP) phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to wireless modem, vehicle Devices, wearable devices, terminal devices in a 5G network, or terminal devices in an evolved public land mobile network (PLMN), etc., which are not limited in the embodiment of the present application.

As an example and not a limitation, in the embodiments of the present application, wearable devices can also be referred to as wearable smart devices. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, Gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets and smart jewelry for physical sign monitoring.

In addition, in the embodiments of the present application, the terminal device may also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the development of information technology in the future. Its main technical feature is to pass items through communication technology. Connect with the network to realize the intelligent network of human-machine interconnection and interconnection of things.

The various terminal devices described above, if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be regarded as vehicle-mounted terminal equipment, for example, the vehicle-mounted terminal equipment is also called on-board unit (OBU). ).

In the embodiment of the present application, the terminal device may also include a relay. Or it can be understood that everything that can communicate with the base station can be regarded as a terminal device.

The access network device in the embodiments of the present application may be a device used to communicate with terminal devices. The access network device may also be called an access device or a wireless access network device, and may be an evolved base station in an LTE system ( evolved NodeB, eNB or eNodeB), it can also be a wireless controller in the cloud radio access network (CRAN) scenario, or the access device can be a relay station, an access point, a vehicle-mounted device, or a wearable device As well as the access equipment in the 5G network or the network equipment in the future evolved PLMN network, it can be the access point (AP) in the WLAN, or the gNB in the new radio system (NR) system. The embodiments of the present application are not limited.

In addition, in the embodiment of the present application, the access network device is a device in the RAN, or in other words, a RAN node that connects a terminal device to a wireless network. For example, as an example and not a limitation, as an access network device, it can be listed: gNB, transmission reception point (TRP), evolved Node B (eNB), radio network controller (radio network controller) , RNC), Node B (Node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB) ), baseband unit (BBU), or wireless fidelity (Wifi) access point (AP), etc. In a network structure, 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), user plane CU node (CU-UP node) and RAN equipment of DU node.

The access network equipment provides services for the cell, and the terminal equipment communicates with the access network equipment through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell. The cell may be an access network equipment (for example, a base station). ) Corresponding cell. The cell can belong to a macro base station or a base station corresponding to a small cell. The small cell here can include: metro cell, micro cell, pico cell ), femto cells, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.

In the embodiment of the present application, the core network device may be connected to the access network device, so that the terminal device can communicate with the core network device through the access network device.

Exemplarily, the core network of the NR communication system may include the following network elements or functions:

Access management function (AMF): Mainly responsible for access and mobility control, including registration management (RM) and connection management (CM), access authentication and access authorization, Reachability management and mobility management, etc.

User plane function (UPF): mainly provides user plane support, including connection points between PDU sessions and data networks, data packet routing and forwarding, data packet inspection and user plane policy execution, processing QoS for the user plane, and downlink data Packet buffering and triggering of downstream data notifications, etc.

Packet control function (PCF): Mainly a policy control function, including support for a unified policy framework to monitor network behavior and provide policy rules for the control plane to execute.

Authentication server function (authentication server function, AUSF): Mainly responsible for providing security-related functions, such as authentication, authentication, etc.

Unified data management (UDM): Responsible for functions related to user authentication, including: authentication credential processing, user identity processing, contract information management, access authorization, etc.

Exemplarily, for the LTE/SAE system, the evolved packet core network may include the following network elements or entities:

The function of the mobility management entity (MME) is to store the UE’s mobility management context, such as the user’s identity, mobility management status, location information, etc., and to provide information to the non-access stratum (NAS). Order processing, responsible for the security of NAS signaling.

SAE gateway (gateway, GW): includes two parts, namely serving gateway (serving gateway, S-GW) and packet data network gateway (PDN gateway, P-GW). S-GW and P-GW are two logical entities, which can exist on the same or different physical entities.

The S-GW saves the user plane context of the UE, such as the UE's IP address and routing information, and performs legal interception and packet data routing functions. The interface between S-W and MME is S11, which is responsible for communication between MME and UPE, and performs interactions such as UE mobility management information and session control information.

The MME is responsible for the connection of the control plane and the user plane with the EUTRAN network through the S1-MME and the S-GW through the S1-U respectively. At the same time, the MME is connected to the 2G/3G SGSN through the S3 interface, and the S-GW is connected to the 2G/3G SGSN through the S4 interface, and is responsible for the mobility control plane anchor point and user plane anchor point functions of the UE between the 3G and SAE networks.

The P-GW is responsible for the user plane anchor function of the UE accessing the packet data network, communicates with the external packet data network through the SGi reference point, has the function of packet routing and forwarding, and is responsible for the enhanced function of policy and charging, based on each user Group filtering function and so on. The P-GW is connected to the S-GW through the S5 interface, and transmits control information such as bearer establishment/modification/deletion, and packet data routing.

The Policy and Charging Rules Function (PCRF) transfers QoS and charging policy control information to the P-GW through the S7 interface. Here, the P-GW serves as a policy and charging enforcement function (PCEF) function.

Fig. 1 shows a schematic diagram of an application scenario of an embodiment of the present application. Figure 1 includes an access network device, a core network device, and a terminal device. Among them, the access network equipment, for example, works in an evolved universal mobile communication system terrestrial radio access (evolved UMTS terrestrial radio access, E-UTRA) system, or works in an NR system, or works in a next-generation communication system or other In the communication system. The core network equipment, for example, works in the E-UTRA system, or works in the NR system, or works in the next-generation communication system or other communication systems. In Figure 1, taking the core network equipment working in the 5G core network (5GC) as an example, the core network equipment and the access network equipment can communicate through the NG interface, and the access network equipment and the terminal equipment can communicate through the Uu interface. In the embodiments of this application, one access network device can serve multiple terminal devices. Figure 1 only takes one terminal device as an example. One core network device can also serve multiple access network devices. Take one of the access network equipment as an example.

Fig. 2 shows a schematic diagram of another application scenario of an embodiment of the present application. In FIG. 2, it 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. Figure 2 takes the radio access network (RAN) as an example. Core network equipment and access network equipment can communicate through NG interfaces, and access network equipment and access network equipment can communicate through NG interfaces. Xn interface communication. In addition, the Uu interface can be used to communicate between the access network device and the terminal device. Among them, these two access network devices, for example, work in the evolved UMTS terrestrial radio access (E-UTRA) system, or work in the NR system, or work in the next-generation communication system Or in other communication systems. These two core network devices, for example, work in the E-UTRA system, or in the NR system, or in the next-generation communication system or other communication systems.

The access network device in FIG. 1 or FIG. 2 is, for example, a base station. Among them, the access network equipment corresponds to different equipment in different systems. For example, in a 4G system, it can correspond to an eNB, and in a 5G system, it corresponds to an access network device in 5G, such as gNB. Similarly, core network equipment corresponds to different equipment in different systems. For example, in a 4G system, it can correspond to a mobility management entity (MME), and in a 5G system, it corresponds to a core network equipment in 5G, such as AMF. Of course, the technical solutions provided by the embodiments of this application can also be applied to future mobile communication systems. Therefore, the access network equipment in FIG. 1 or FIG. 2 can also correspond to the access network equipment and core network equipment in the future mobile communication system. The equipment can also correspond to the core network equipment in the future mobile communication system. Figure 1 or Figure 2 takes the access network device as a base station as an example. In fact, referring to the previous introduction, the access network device may also be a device such as an RSU.

Hereinafter, the relevant terms involved in the embodiments of the present application will be described.

1) User identity

In the embodiment of the present application, the terminal device supports at least one user identity, such as a first user identity and/or a second user identity. Here, "user identity" (for example, the first user identity or the second user identity, etc.) is a logical concept. For example, "user identity" can correspond to a SIM card or subscriber information or a virtual SIM card or a user identity allocated by the core network (such as international mobile subscriber identity (IMSI) or temporary mobile subscriber identity, TMSI), etc.), or the identifier assigned by the access network, the cell radio network temporary identifier (C-RNTI), etc. From the perspective of the network side, 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 that supports two user identities can be regarded as two communication entities to the network side. For another example, when the "user identity" corresponds to the SIM card or subscriber information, the network side will recognize two terminal devices that support different SIM cards or different subscriber information as two different communication entities, and will also support multiple different communication entities. The same terminal device with SIM card or multiple subscriber information is identified as multiple different communication entities, even in reality, the terminal device supporting multiple different SIM cards or multiple subscriber information is just one physical entity.

Exemplarily, the SIM card can be understood as the key for the terminal device to access the mobile network. For ease 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 to store the user's identification code and key, and support the authentication of the user by the GSM system. For another example, the SIM card may also be a universal subscriber identity module (USIM), which may also be referred to as an upgraded SIM card. In the embodiments of the present application, description will be made mainly by taking the "user identity" corresponding to the SIM card as an example.

In the embodiment of the present application, a SIM card is installed in the terminal device, and it is considered that the terminal device supports a user identity. For example, a terminal device with two SIM cards installed supports two user identities. In other words, there is a one-to-one correspondence between the SIM card and the user identity.

As an example, more and more smart phones currently support the simultaneous insertion of two SIM cards, for example, one SIM card is used for private business and the other SIM card is used for work. Or, one SIM card is used for data services, and the other SIM card is used for voice services. Among them, the two SIM cards in a mobile phone can belong to the same mobile operator or different mobile operators; they can belong to the same standard (standards include NR, LTE, wideband code division multiple access, WCDMA ), time division multiple access (TDMA 2000, or GSM, etc.) can also belong to different standards.

2) Terminal device mode

According to the different transceiver capabilities of the terminal device, the terminal device with dual SIM cards can have one of the following three modes:

1. Passive mode, or also known as DSSS mode: Although two SIM cards can be inserted, only one can be used at a time.

Refer to Figure 3A, which is a schematic diagram of the passive mode. In Figure 3A, two SIM cards are respectively USIM1 and USIM2 as an example. At time 1, USIM1 is working (or in RRC connected state (connected)), that is, USIM1 can send and receive data, but USIM2 cannot be used at this time; or, at time 2, USIM2 is working (or in RRC connected state), also That is, USIM2 can send and receive data, but USIM1 cannot be used at this time.

2. DSDS mode: Two SIM cards share a set of transceivers. For the idle state, the transceiver needs to monitor the paging messages of the two cards. For example, the transceiver may use time division multiple (TDM) mode to monitor.

Refer to FIG. 3B, which is a schematic diagram of the DSDS mode. In Figure 3B, two SIM cards are respectively USIM1 and USIM2 as an example. At time 1, USIM1 is working (or in RRC connected state), that is, USIM1 can send and receive data. At this time, USIM2 can be in an idle state or inactive state (inactive); or, USIM2 is working (or in RRC connected state), That is, the USIM2 can send and receive data, and at this time, the USIM1 can be in an idle state or an inactive state. In this article, the inactive state can also be called the deactivated state, or the deactivated state, etc.

3. DSDA mode: Two SIM cards use their own transceivers. The two SIM cards can be in the RRC connection state at the same time, that is, the terminal device can receive and send data from the two SIM cards at the same time.

Refer to Figure 3C, which is a schematic diagram of the DSDA mode. In Figure 3C, two SIM cards are respectively USIM1 and USIM2 as an example. When USIM1 is working (or when it enters the RRC connected state), that is, when USIM1 is sending and receiving data, USIM2 can also work, that is, USIM2 and USIM1 can be in the RRC connected state at the same time.

3) Radio resource control (radio resource control, RRC) status

The terminal equipment has three radio resource control (radio resource control, RRC) states. As mentioned above, the three RRC states are: RRC connected state (connected state), RRC idle state (idle state) and inactive state (inactive state). Among them, the inactive state can also be referred to as an inactive state or a deactivated state.

RRC connected state (or, can also be referred to as connected state for short. In this article, "connected state" and "RRC connected state" are the same concept, and the two terms can be interchanged): the terminal device establishes an RRC connection with the network, and it can Perform data transfer.

RRC idle state (or, can also be referred to as idle state for short. In this article, "idle state" and "RRC idle state" are the same concept, and the two terms can be interchanged): the terminal device does not establish an RRC connection with the network, and the base station The context of the terminal device is not stored. If the terminal device needs to enter the RRC connected state from the idle state, it needs to initiate an RRC connection establishment process.

Inactive state: The terminal device entered the RRC connected state before, and then the base station releases the RRC connection, but the base station saves the context of the terminal device. If the terminal device needs to enter the RRC connected state again from the inactive state, it needs to initiate the RRC connection recovery process (or called the RRC connection re-establishment process). Compared with the RRC establishment process, the RRC recovery process has shorter time delay and lower signaling overhead. However, the base station needs to save the context of the terminal device, which will occupy the storage overhead of the base station.

4) Paging process

When the terminal device has no data transmission, in order to save power, the terminal device enters an idle state or an inactive state. In this state, the terminal device needs to wake up at a certain position in a certain period to monitor whether the network is paging the terminal device. The location where the terminal device wakes up is the paging occasion (PO). Refer to Figure 4, which is a schematic flowchart of a network device initiating paging to a terminal device.

S11. The downlink data of the terminal equipment arrives at 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 a terminal device in an idle state, when downlink data arrives at the core network device (that is, the network wants to send data to the terminal device), the core network sends a paging message to multiple access network devices under the terminal device registration area to trigger multiple access network devices. Each base station sends a paging message on the air interface. Figure 4 only takes one of the access network devices as an example.

Wherein, the paging message may include the terminal device identification. In the embodiments of the present application, the terminal equipment identity may also be referred to as a user equipment identity (UE identity, UE ID). As an example, the UE ID may be a temporary mobile subscriber identity (S-TMSI) assigned by the core network device to the terminal device, or the UE ID may be the UE identity used when the UE is in the RRC inactive state. For example, the inactive radio network temporary identifier (I-RNTI) used to wake up the UE in the inactive state. Optionally, the paging message may also include a paging cycle (which may be recorded as T1) allocated by the core network to the terminal device. As an example, the paging cycle may be a discontinuous reception (DRX) cycle, but the embodiment of the present application is not limited to this.

S13. The access network device determines the paging opportunity of the terminal device.

For inactive terminal devices, there are no steps S11 and S12. When downlink data arrives at the access network device, the access network device can determine to initiate a paging to the terminal device and determine the paging timing.

In some implementations, a cell-level paging cycle (which can be denoted as T2) can be broadcast in the system message of the cell broadcast by the base station. In addition, for a terminal device in the inactive state, the access network device will allocate a paging cycle (which can be recorded 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, paging cycle, and paging configuration parameters of the cell. Similarly, the terminal device can also determine the time domain position of the PO based on the UE ID, paging cycle, and cell paging configuration parameters applicable to all terminal devices in the current cell.

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

The access network device sends a paging message on the air interface. Among them, if the access network device is configured with a radio access network-based notification area (RNA), the access network device will send paging at the paging occasion of the terminal device in the cell indicated by the RNA. If there is a cell belonging to another access network device in the cell indicated by RNA, the access network device can send a paging message to other access network devices, and the other access network devices can use the air interface at the paging occasion of the terminal device. Send a paging message.

Wherein, the paging message may carry the user equipment paging identity (UE paging identity), so that the terminal device receiving the paging message can identify whether the paging message is sent to itself.

The terminal device can monitor the 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 will initiate a new RRC connection establishment process on the cell where it currently resides, or initiate an RRC connection recovery process to enter the RRC connection state.

5) Tracking area update (TAU) process

When the terminal device is in an idle state, in order to allow the network device to track its location, a tracking area update process, namely TAU (tracking area update), is executed. The network device can page the terminal device in the tracking area (TA).

When a terminal device attaches for the first time, the core network device allocates a TA identity (TAI) list (list) for the terminal device, and the TAI list includes a group of TA identities. When the network device is paging, it will call the TAI list. Therefore, when the terminal device moves out of the cell in the TAI list, the TAU process is initiated, thereby achieving TAI synchronization between the network side and the terminal device side. Correspondingly, the core network device can page the terminal device in this TAI list.

Figure 5 shows a schematic diagram of the structure of the TAI list. As shown in Figure 5, the TAI list includes a group of TAIs, and each TAI includes a mobile country code (MCC), a mobile network code (mobile network code, MNC), and a TA code (TA code, TAC). Wherein, MCC is used to indicate the country to which the corresponding TAI belongs, MNC is used to indicate the operator to which the corresponding TAI belongs, and TAC is used to indicate the tracking area of the corresponding TAI.

It should be noted that the division rules of TA are different under different communication standards. For example, the 5G system and the 4G system have different TA division rules. As an example, the number of bits occupied by the TAC in the TAI structure in the 5G system and the number of bits occupied by the TAC in the TAI structure in the 4G system may be different. Exemplarily, in the 4G system, the length of the TAC occupies 16 bits, and in the 5G system, the length of the TAC occupies 24 bits.

In the embodiment of the present application, the terminal device or the core network device can convert the TAI under different communication standards, that is, convert the area corresponding to the TAI under the different communication standards. For example, the 4G TAI list can be converted to the corresponding 5G TAI list (that is, the 4G area corresponding to the 4G TAI list is converted to the corresponding 5G area), or the 5G TAI list can be converted to the corresponding 4G TAI list (that is, the TAI list in the 5G system corresponds to The 5G area is converted to the corresponding 4G area).

In the following, the different communication standards are 4G communication standards and 5G communication standards as examples to describe the conversion method of TAI under different communication standards.

Taking into account the different TA division rules of 4G and 5G, when terminal equipment or core network equipment converts the TA list used in the 4G system from the 4G area to the corresponding 5G area, it needs to know the TA division rules in the 4G system and the 5G system. The TA division rules of the 4G system and the corresponding relationship (or mapping relationship) between the TAI in the 4G system and the TAI in the 5G system. Exemplarily, a 4G TAI and 5G TAI mapping table may be used to perform the area conversion, and the mapping table includes a mapping relationship between 4G TAI and 5G TAI. As an example, the mapping relationship between 4G TAI and 5G TAI may be one-to-one, one-to-many, many-to-one, or many-to-many, which is not limited in the embodiment of the present application. In addition, the mapping rule between 4G TAI and 5G TAI may be pre-stored in the terminal device, or pre-defined by the protocol, or configured by the core network device, which is not limited in the embodiment of the present application.

As an example, the core network device can configure a 4G TAI list for a 4G communication standard terminal device. When the core network device learns that the 4G communication standard terminal device is the first user identity and another 5G communication standard terminal device is the second When the user identity is integrated in the same device, when the core network device configures the 4G TAI list, it can also convert the 4G TAI list to the 5G TAI list according to the mapping relationship between 4G TAI and 5G TAI, and convert it The following 5G TAI list configures the terminal device of the first user identity. In this way, when the terminal device needs to use the 5G TAI list, it can be used directly. Exemplarily, the above process may be embodied when the network configures the TAI list, the 4G TAI list and the 5G TAI list are respectively configured through the 4G TAI list and 5G TAI list domains.

In another example, the core network device may configure the terminal device with a mapping relationship between 4G TAI and 5G TAI in advance. Then, the terminal device may convert the area corresponding to the 4G TAI list into the area corresponding to the 5G TAI list according to the pre-configured mapping relationship when it needs to perform the conversion between the 4G TAI list and the 5G TAI list.

When the terminal device moves out of the cell in the TAI list, it initiates the TAU process. Refer to FIG. 6, which is a schematic flowchart of the terminal device initiating a TAU process.

S21, the terminal device triggers a TAU report procedure (trigger to start TAU procedure).

When certain conditions are met, the terminal device triggers the TAU reporting process. As an example, the trigger conditions include but are not limited to the following: the TAU periodic reporting timer expires, the terminal device discovers that it has entered a new TA, and the new TA is not in the TAI list of the terminal device.

S22: The terminal device sends a TAU request (request) message to the access network device. Taking the eNodeB as the access network device as an example, the TAU request message can include the old (old) globally unique temporary identity (GUTI), the old GUTI type (type), and the TAI ( last visited TAI) etc.

S23: The access network device forwards the TAU request message received from the terminal device to the new core network device. Here, the new core network device is the core network device corresponding to the new cell that the terminal device enters after moving out of the cell in the TAI list. The new core network equipment and the original core network equipment may be the same or different, which is not limited in the embodiment of the present application.

S24: The new core network device reconfigures the TAI list according to the TAU request message received from the access network device in step S23.

S25: The core network device sends a TAU response (response) message to the terminal device, and the TAU response message carries the GUTI of the terminal device and the TAI list reconfigured for the terminal device.

In the existing communication mechanism, when the terminal device is in an idle state, in order to let the network device know where it is, the tracking area update process is performed, that is, TAU (tracking area update).

For a terminal device that supports two SIM cards, the two SIM cards are registered in two access networks respectively. As an example, take SIM card 1 of the two SIM cards belonging to the LTE communication standard (can also be called 4G communication standard), and SIM card 2 belonging to the NR communication standard (can also be called 5G communication standard) as an example. Card 1 is registered in a 4G core network, such as MME, and SIM card 2 is registered in a 5G core network, such as AMF.

When the terminal device moves on the TA corresponding to these two networks, as shown in Figure 7, for SIM card 1, the corresponding TA area is the area corresponding to the 4G TAI list. When the terminal device moves out of the 4G TAI list, the corresponding TA area is the area corresponding to the 4G TAI list. Area, when entering the area range corresponding to the 5G TAI list, the terminal device will trigger the TAU process with the user identity corresponding to the SIM card 1 (for example, the first user identity). At this time, for the SIM card 2 in the terminal device, since the terminal device has not moved out of the area corresponding to its corresponding 5G TAI list, there is no need to trigger the TAU process.

Conversely, for SIM card 2, the corresponding TA area is the area corresponding to the 5G TAI list. When the terminal device moves out of the area corresponding to the 5G TAI list and enters the area corresponding to the 4G TAI list, the terminal device will use the SIM card 2 The corresponding user identity (such as the second user identity) triggers the TAU process. At this time, for the SIM card 1 in the terminal device, since the terminal device has not moved out of the area corresponding to its corresponding 4G TAI list, there is no need to trigger the TAU process.

Therefore, for a terminal device integrated with dual SIM cards, as long as a SIM card is removed from the tracking area list (TA list) corresponding to its own network, a tracking area update (TAU) will be triggered. In this way, terminal equipment may frequently report TAUs, resulting in an increase in air interface signaling overhead and increasing power consumption of the terminal equipment.

In view of this, the technical solutions of the embodiments of the present application are provided. In this embodiment of the present application, the terminal device may obtain a TAI set, which includes a first TAI list associated with the first user identity of the terminal device, and a second TAI list associated with the second user identity of the terminal device. During the movement of the terminal device, it can determine whether to trigger the TAU process according to whether it moves out of the area corresponding to the TAI set. Wherein, the area corresponding to the TAI set may include the area corresponding to the first TAI list and the area corresponding to the second TAI list. Therefore, the embodiment of the present application performs TAU based on the area corresponding to the TAI set, which can help reduce frequent TAU reporting by terminal devices.

In addition, in the embodiment of the present application, the network device may also obtain the above-mentioned TAI set, and in the paging process, the network device may page the terminal device in the area corresponding to the TAI set.

Among them, the first user identity can be understood as the user identity that the terminal device has after the SIM card 1 is installed, and the second user identity can be understood as the user identity that the terminal device has after the SIM card 2 is installed. In the embodiment of the present application, the communication mode of the SIM card 1 (that is, the communication mode of the first user identity) may be the same as or different from the communication mode of the SIM card 2 (that is, the communication mode of the second user identity). This is not limited.

It should be understood that in this embodiment of the application, the terminal device can also install more than two SIM cards, and 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 can be registered in more than two networks, and each user identity can be registered in one network.

The following describes the technical solutions provided by the embodiments of the present application in conjunction with the drawings. The embodiment of the present application mainly takes the terminal device supporting two user identities as an example, such as the first user identity and the second user identity. The embodiments of this application will mainly be described based on the terminal device supporting two user identities. When the terminal device supports more than two user identities, the specific implementation can refer to the related description of the terminal device supporting two user identities, and some simple things may be required. However, it is also within the protection scope of the embodiments of this application.

Among them, when the user identity of the terminal device is the first user identity, from the perspective of the network side, the terminal device can be understood as a user (from the perspective of the protocol, it is a terminal device, for example, called the first user ); When the user identity of the terminal device is the second user identity, from the perspective of the network side, the terminal device can be understood as another user (for example, referred to as the second user). The terminal device can be registered in the first network as the first user and registered in the second network as the second user. In the embodiment of the present application, the terminal device supports one user identity, which can also be described as the terminal device having one user identity. In the same way, 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 various embodiments of this application, the "terminal device with the first user identity" can be understood as "the first user identity of the terminal device", as indicated by these two descriptions. The content is the same, these two descriptions can be interchanged. In the same way, "the terminal device of the second user identity" can be understood as "the second user identity of the terminal device". The content indicated by the two description methods is the same, and the two description methods can be interchanged.

The technical solution of the present application can be applied to a wireless communication system, for example, the communication system shown in FIG. 1 or the communication system shown in FIG. 2. The three communication devices in the wireless communication system may have a wireless communication connection relationship. One of the three communication devices may correspond to the terminal device shown in FIG. 1 or FIG. 2, or may be configured in the terminal. The chip in the device; the other 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; the three communication devices The other communication device in the device 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 shown herein, the first, second, and various numerical numbers are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application. For example, distinguish different user identities, different TAI lists, different core network equipment, different access network equipment, etc.

It should also be understood that in the embodiments shown herein, "pre-defined" can be implemented by pre-saving corresponding codes, tables, or other methods that can be used to indicate related information in devices (for example, including terminal devices and network devices). This application does not limit its specific implementation.

It should also be understood that the “saving” involved in the embodiments of the present application may refer to being stored in one or more memories. The one or more memories may be provided separately, or integrated in an encoder or decoder, a processor, or a communication device. The one or more memories may also be partly provided separately, and partly integrated in a decoder, a processor, or a communication device. The type of the memory can be any form of storage medium, which is not limited in this application.

It should also be understood that the "protocol" in the embodiments of the present application may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which are not limited in this application.

Hereinafter, without loss of generality, first, the TAU process and paging of a terminal device are taken as an example to describe the embodiments of the present application in detail. It can be understood that any terminal device in the wireless communication system or the chip configured in the terminal device can perform TAU or paging based on the same method, and any access network device in the wireless communication system or the chip configured in the terminal device can perform TAU or paging based on the same method. The chips in the network equipment can perform TAU or paging based on the same method, and any core network device in the wireless communication system or the chip configured in the core network device can perform TAU or paging based on the same method. This application does not limit this.

Please refer to FIG. 8, which shows a schematic flowchart of a TAU method provided by an embodiment of the present application.

810: The terminal device determines the first area corresponding to the TAI set. The first area includes an area corresponding to the first TAI list and an area corresponding to the second TAI list. The first TAI list is associated with the first user identity of the terminal device, and the second TAI list is associated with the second user identity of the terminal device.

Exemplarily, taking the scenario in Figure 7 as an example, the first TAI list may be a 4G TAI list, the second TAI list may be a 5G TAI list, and the first area may be the area corresponding to the 4G TAI list and the 5G TAI list. Union of regions.

820: When the terminal device detects that it moves out of the first area, it initiates a TAU process.

For example, when the terminal device is in the process of moving, when the terminal device detects that it has moved out of the first area corresponding to the TAI set as the first user, it initiates a TAU to the first core network device registered with the terminal device as the first user. process. In another example, when the terminal device is in the process of moving, when the terminal device detects that it has moved out of the first area corresponding to the TAI set as the second user, it initiates to the second core network device registered with the terminal device as the second user. TAU process. Specifically, the TAU process can be referred to the above description, for the sake of brevity, it is not repeated here.

Continuing to illustrate with FIG. 7, when the terminal device uses the SIM card 1 to detect the union of the area corresponding to the 4G TAI list and the area corresponding to the 5G TAI list, it uses the SIM card 1 to initiate a TAU process to the MME. When the terminal device uses the SIM card 2 to detect the union of the area corresponding to the 4G TAI list and the area corresponding to the 5G TAI list, it uses the SIM card 2 to initiate a TAU process to the AMF.

In other words, when the terminal device detects that it has moved out of the area corresponding to the 4G TAI list with SIM card 1, but is still in the area corresponding to the 5G TAI list, it does not trigger the TAU process with SIM card 1, or when the terminal device detects with SIM card 2. When it moves out of the area corresponding to the 5G TAI list, but is still in the area corresponding to the 4G TAI list, the SIM card 2 is not used to trigger the TAU process.

In some optional embodiments, when the first user identity is the first communication standard, the second user identity is the second communication standard, and the first communication standard is different from the second communication standard, the TAI set may be based on the first TAI list and The third TAI list is determined, where the third TAI list is converted from the second TAI list according to the mapping relationship between the TAI of the first communication standard and the TAI of the second communication standard.

In some implementation manners, the terminal device may convert the second TAI list into the third TAI list according to the mapping relationship between the TAI of the first communication standard and the TAI of the second communication standard. Then, in a possible manner, the terminal device may determine the TAI list set according to the first TAI list and the third TAI list, and then determine the first area according to the TAI list set. For example, the terminal device may take the union of the first TAI list and the second TAI list to obtain the TAI set, and then determine the first area according to the TAI set. Or in another possible manner, the terminal device may determine the first area according to the area corresponding to the first TAI list and the area corresponding to the third TAI list. For example, the terminal device may take the union of the area corresponding to the first TAI list and the area corresponding to the third TAI list to determine the first area.

Specifically, for the mapping relationship between the TAI of the first communication standard and the TAI of the second communication standard, reference may be made to the above description. For brevity, details are not repeated here.

In some optional embodiments, when the first communication standard is the same as the second communication standard, the TAI set may include the first TAI list and the second TAI list. Exemplarily, the terminal device may determine the TAI list set for the first TAI list and the second TAI list, and then determine the first area according to the TAI list set. Alternatively, the terminal device may determine the first area according to the area corresponding to the first TAI list and the area corresponding to the second TAI list.

In some possible implementation manners, the foregoing mapping relationship may come from the first core network device or the second core network device. That is, the first core network device or the second core network device may predefine the mapping relationship, and then send the mapping relationship to the terminal device. Exemplarily, and optionally, in the method shown in FIG. 8, 802 may be further included, and the first core network device or the second core network device may send the mapping relationship to the terminal device. Or, in other possible implementation manners, the mapping relationship may be predefined in the terminal device.

In some possible implementation manners, the above-mentioned TAI set may come from the first core network device or the second core network device. As an example, the first core network device or the second core network device negotiates to determine the TAI set, and then sends the TAI set to the terminal device. Exemplarily, and optionally, in the method shown in FIG. 8, it may further include 804, and the first core network device or the second core network device may send the TAI set to the terminal device. Or, in other possible implementation manners, the TAI set may be predefined in the terminal device.

Optionally, in the embodiment of the present application, the terminal device may also enable (or may also be referred to as activation) or de-enable (or may also be referred to as deactivation) the tracking area update TAU optimization function.

It should be noted that, in this embodiment of the application, the terminal device may enable the tracking area update TAU optimization function of some or all of the user identities supported by the terminal device. Exemplarily, the terminal device can enable the TAU optimization function of the first user identity, disable the TAU optimization function of the second user identity, and can also enable the TAU optimization function of the first user identity and the TAU optimization function of the second user identity at the same time. Optimization function. However, the embodiments of the present application are not limited to this.

In some possible implementations, the terminal device can determine whether to enable the TAU optimization function by itself. For example, when the terminal device determines to insert at least two SIM cards, the TAU optimization function may be enabled, and when the terminal device determines that only one SIM card is inserted, the TAU optimization function may be disabled. Or, the terminal device periodically enables or disables the TAU optimization function during the process of supporting at least two SIMs. The embodiments of this application do not limit this.

In some possible implementation manners, the terminal device may determine whether to enable the TAU optimization function according to the first indication information from the core network device. In this way, the core network device can determine whether to enable the TAU optimization function according to needs. Exemplarily, and optionally, in the method shown in FIG. 8, it may further include 806, and the core network device may send the first indication information to the terminal device.

As an example, the terminal device may receive first indication information from the first core network device, where the first indication information is used to indicate that the TAU optimization function of the first user identity of the terminal device is enabled.

In another example, the terminal device may receive first indication information from the second core network device, where the first indication information is used to indicate that the TAU optimization function of the second user identity of the terminal device is enabled.

In another example, the terminal device receives first indication information from the first core network device or the second core network device, where the first indication information is used to indicate that the TAU optimization function of the first user identity and the second user identity is enabled.

In some possible implementation manners, the first indication information may be bits, that is, bits may be sent to indicate whether to enable the TAU optimization function.

For example, the first indication information may be 1 bit. When the bit is "1", it means that the TAU optimization function can be enabled, and when the bit is "0", it means that the TAU optimization function can be disabled.

For another example, the first indication information may be multiple bits. In some optional embodiments, the multiple bits may also indicate whether to perform TA update, and/or location area (location area, LA) update. Table 1 shows a specific example of the first indication information.

Table 1

Wherein, the TA/TA joint update means that the terminal device can comprehensively consider the TA area corresponding to the first communication standard and the TA area corresponding to the second communication standard to perform location update, but the TAU optimization function is not enabled. Among them, the first communication standard can be, for example, a 4G communication standard, and the second communication standard can be a 5G communication standard. The first communication standard and the second communication standard can also be other future standards, such as 5.5G or 6G wireless communication systems. No restrictions.

The joint TA/LA update means that the terminal device comprehensively considers the TA area corresponding to 4G and the LA area corresponding to 3G to perform location update.

The TA/TA joint update and the enabling of the TAU optimization function mean that the terminal device comprehensively considers the TA area corresponding to the first communication standard and the TA area corresponding to the second communication standard to perform location update. Compared with the TA/TA joint update, the corresponding meaning of "110" is that the TAU optimization function is enabled during the configuration, and the TA/TA joint update only configures the terminal device to have this function, but through other instructions. To enable this function.

In some optional embodiments, the terminal device may reflect whether its TAU optimization function is enabled according to the terminal device identifier stored locally. As an example, the terminal device identifier may be a temporary identity (used in next update, TIN) of the terminal device used in the next update. Among them, the TIN is a parameter of the terminal device, which is used to indicate the parameter of the terminal device in a TAU request (TAU request) or an attach request (attach request), so that the network device can identify the terminal device.

As a specific example, when the TAU optimization function of the first user identity of the terminal device is enabled or activated, the locally saved TIN value of the first user identity of the terminal device can be set to RAT-related TMSI (RAT-related TMSI) . Among them, the RAT-related TMSI may be the globally unique temporary identifier GUTI under the first communication standard corresponding to the first user identity, which depends on the network where the terminal device currently resides. As an example, when the first user identity of the terminal device currently resides in a 4G cell, the RAT-related TMSI is 4G GUTI, and when the first user identity of the terminal device resides in a 5G cell, the RAT-related TMSI is 5G GUTI, when the first user identity of the terminal device resides in a 3G/3G cell, the RAT-related TMSI is P-GUTI.

When the TAU optimization function of the first user identity of the terminal device is disabled or deactivated, the value of TIN can be as follows:

Circuit domain user temporary identifier (packet temporary mobile subscriber identity, P-TMSI);

Globally unique temporary identifier (GUTI), which uniquely identifies terminal equipment in the network;

Temporary mobile subscriber identity (TMSI).

The value of the TIN corresponding to the second user identity of the terminal device is similar to the value of the TIN corresponding to the first user identity. For details, please refer to the description of the TIN corresponding to the first user identity, which will not be repeated here.

It should be noted that, in the embodiment of the present application, step 806 may be performed before step 810, or may be performed after step 810, which is not limited in the embodiment of the present application.

In some optional embodiments, the terminal device may also report to the core network device that it has the ability to support the TAU optimization function. Exemplarily and optionally, the method shown in FIG. 8 may further include step 808. The terminal device sends second indication information to the core network device, where the second indication information is used to indicate that the terminal device supports the TAU optimization function. That is, it has the ability to support the TAU optimization function. In this way, the core network device can determine whether to enable the TAU optimization function of the terminal device according to whether the terminal device has (that is, supports) the capability of the TAU optimization function.

As an example, the terminal device may send second indication information to the first core network device as the first user identity, where the second indication information is used to indicate that the first user identity of the terminal device has the ability to support the TAU optimization function. In another example, the terminal device may use the second user identity to send second indication information to the second core network device, where the second indication information is used to indicate that the second user identity of the terminal device is capable of supporting TAU.

In the embodiment of the present application, when the first user identity of the terminal device detects that it moves out of the first area, the terminal device may use the first user identity to send a first request for updating the tracking area to the first core network device (for example, it may be TAU request). Wherein, the first request includes the first terminal device identifier corresponding to the first user identity of the terminal device, and the first terminal device identifier is determined according to the second terminal device identifier pre-stored by the terminal device, where all The second terminal device identifier is related to whether the first user identity of the terminal device enables the tracking area optimization function. In this way, the core network device can determine whether the TAU optimization function of the first user identity is enabled according to the first terminal device identifier in the first request.

As an example, the second terminal device identifier may be a state terminal device identifier stored locally by the terminal device as the first user identity and used to reflect whether its TAU optimization function is enabled, such as a locally stored TIN. Correspondingly, at this time, the first terminal device identifier in the first request may be the same as the second terminal device identifier. Exemplarily, the first terminal device identifier and the second terminal device identifier may be GUTI under the first communication standard corresponding to the first user identity.

Table 2 shows an example of the first terminal device identifier carried in the first request. Among them, in Table 2, the first communication standard is the 4G communication standard, the second communication standard is the 5G communication standard, and the second terminal device identifier is the TIN as an example for description.

Table 2

In a possible situation, when the first user identity of the terminal device resides in a 4G cell, that is, when a TAU request (TAU request via 4G) is sent through a 4G cell, if the TIN is set to 4G-GUTI, the first terminal device ID The value can be 4G-GUTI; if the TIN is set to 5G-GUTI, the first terminal device identifier can be set to 4G-GUTI (4G-GUTI mapped from 5G-GUTI); if the TIN is set When it is a RAT-related TMSI, the first terminal device identifier may take a value of 4G-GUTI.

Another possible situation is that when the first user identity of the terminal device resides in a 5G cell, that is, when a TAU request (TAU request via 4G) is sent through a 5G cell, if the TIN is set to 4G-GUTI, the first terminal device The identifier can take the value of 5G-GUTI (4G-GUTI mapped from 5G-GUTI); if the TIN is set to 5G-GUTI, the first terminal device identifier can take the value of 5G-GUTI; if TIN When it is set to RAT-related TMSI, the first terminal device identifier may take a value of 5G-GUTI.

In some optional embodiments, when the terminal device attaches as the first user identity for the first time, the attach request sent to the first core network device may also include the above-mentioned first terminal device identifier, where the first terminal device identifier is also included in the attach request sent to the first core network device. The terminal device identifier may be determined according to the above-mentioned second terminal device identifier. As an example, Table 3 shows an example of the first terminal device identifier carried in the attach request. Among them, in Table 3, the first communication standard is the 4G communication standard, the second communication standard is the 5G communication standard, and the second terminal device identifier is the TIN as an example for description.

table 3

Specifically, the value of the first terminal device identifier in the attach request is similar to the value of the first terminal device identifier in the first request, and the above description can be referred to. For brevity, details are not repeated here.

When the second user identity of the terminal device detects that it moves out of the first area, the request for updating the tracking area sent by the terminal device as the second user identity to the second core network device is similar to the first request. For details, please refer to the first request. The description in, I won’t repeat it here.

Hereinafter, taking the terminal device in the scenario shown in FIG. 7 as an example, the TAU method of the embodiment of the present application will be described in detail with reference to FIG. 9 and FIG. 10. The terminal device is registered to the 4G network as the first user, such as the first core network device, the first core network device includes, for example, an MME, and the terminal device is registered to the 5G network as the second user, such as the second core network. In the second core network device, for example, AMF is included. However, the embodiments of the present application are not limited to this. In the following, the solution of the embodiment of the present application is described by taking the first core network device as the MME and the second core network device as the AMF as an example.

Please refer to FIG. 9, which shows a schematic flowchart of another TAU method provided in an embodiment of the present application. In this method, the terminal device converts the 4G TAI list associated with the second user identity of the terminal device into a 5G TAI list according to the mapping relationship between 4G TAI and 5G TAI acquired in advance, or associates the first user identity of the terminal device Convert the 5G TAI list into a 4G TAI list, and obtain a 4G/5G TAI list (an example of a TAI set). The TAU method shown in FIG. 9 includes 901 to 907.

It should be understood that FIG. 9 shows the steps or operations of the TAU method, but these steps or operations are only examples, and the embodiment of the present application may also perform other operations or variations of each operation in FIG. 9. In addition, the various steps in FIG. 9 may be performed in a different order from that presented in FIG. 9, and it is possible that not all the operations in FIG. 9 are to be performed.

901. The MME and AMF negotiate whether to enable the TAU optimization function of the terminal device.

Exemplarily, the MME and AMF may negotiate through signaling to determine whether to enable the TAU optimization function of the terminal device.

Optionally, before step 901, the terminal device may send second indication information to the MME as the first user identity to indicate that the first user identity of the terminal device has the ability to support the TAU optimization function. And/or, the terminal device may send second indication information to the AMF as the second user identity to indicate that the second user identity of the terminal device has the ability to support the TAU optimization function.

If the AMF/MME determines to enable the TAU function of the terminal device of the corresponding user identity, it sends an instruction to enable the TAU optimization function to the terminal device of the corresponding user identity.

902: If it is determined that the TAU optimization function of the second user identity is enabled, the AMF sends first indication information to the terminal device of the second user identity, where the first indication information is used to enable the TAU optimization function.

Optionally, the AMF may also send the mapping relationship between 4G TAI and 5G TAI and the 5G TAI list to the terminal device of the second user identity.

In some possible implementations, the AMF may combine the first indication information, the mapping relationship between 4G TAI and 5G TAI, and at least one of the 5G TAI list through a TAU accept message, or through an attach accept message The first user identity is sent to the terminal device, but the embodiment of the present application is not limited to this.

In some possible implementations, the mapping relationship between 4G TAI and 5G TAI, or a 5G TAI list may also be sent to implicitly indicate that the TAU optimization function is enabled. At this time, it can also be considered that the first indication information is specifically a mapping relationship between 4G TAI and 5G TAI, or a 5G TAI list.

903. If it is determined that the TAU optimization function of the first user identity is enabled, the MME sends first indication information to the terminal device of the first user identity, where the first indication information is used to enable the TAU optimization function.

Optionally, the MME may also send the mapping relationship between 4G TAI and 5G TAI and the 4G TAI list to the terminal device of the first user identity.

In some possible implementations, the MME may combine the first indication information, the mapping relationship between 4G TAI and 5G TAI, and at least one of the 4G TAI list through a TAU accept message, or through an attach accept message It is sent to the terminal device of the second user identity, but the embodiment of the present application is not limited to this.

In some possible implementations, the mapping relationship between 4G TAI and 5G TAI, or a 4G TAI list may also be sent to implicitly indicate that the TAU optimization function is enabled. At this time, it can also be considered that the first indication information is specifically a mapping relationship between 4G TAI and 5G TAI, or a 4G TAI list.

Specifically, the first indication information can be referred to the description in FIG. 8. For brevity, details are not described herein again.

904: The terminal device performs TAI list interaction.

Exemplarily, the terminal device of the first user identity may obtain the 5G TAI list of the terminal device of the second user identity, and the terminal device of the second user identity may obtain the 4G TAI list of the first user identity.

In the following, description is made by taking the terminal device of the first user identity to enable the TAU optimization function as an example. The enabling TAU optimization function of the terminal device of the second user identity is similar to the enabling of the TAU optimization function of the terminal device of the first user identity. You can refer to the description of enabling the TAU optimization function of the terminal device of the first user identity. You may need to do something simple However, it is also within the protection scope of the embodiments of this application.

905: The terminal device of the first user identity determines the first area.

Exemplarily, the terminal device of the first user identity may convert the 5G TAI list acquired in step 904 into a 4G TAI list according to the pre-acquired mapping relationship between 4G TAI and 5G TAI. Then, according to the 4G TAI list obtained from the MME and the 4G TAI list converted from the 5G TAI list, the 4G/5G TAI list and the first area corresponding to the 4G/5G TAI list are determined.

906: When the terminal device of the first user identity moves within the first area (or can also be described as within the first area), the TAU is not triggered.

907: When the terminal device with the first user identity detects that the terminal device moves out of the first area, the terminal device uses the first user identity to initiate a TAU process to the MME.

Exemplarily, with the first user identity, the terminal device may initiate a TAU request to the MME, which includes the first terminal device identifier corresponding to the first user identity of the terminal device. For details, please refer to the description in FIG. 8. For brevity, details are not repeated here.

Therefore, in this embodiment of the application, the terminal device obtains the 4G/5G TAI list according to the pre-obtained mapping relationship between 4G TAI and 5G TAI, and then the terminal device detects that the 4G/TAI is moved out of the 4G/TAI as the first user or the second user. In the area corresponding to the 5G TAI list, the tracking area location update process is initiated, which can avoid the TAU process initiated when the terminal device detects as the first user to move out of the area corresponding to the 5G TAI list and enters the area corresponding to the 4G TAI list. And to avoid the TAU process initiated when the terminal device detects that it moves out of the area corresponding to the 4G TAI list as the second user, and enters the area corresponding to the 5G TAI list, which can help reduce frequent TAU reporting by the terminal device and save Air interface signaling overhead reduces the power consumption of terminal equipment.

Please refer to FIG. 10, which shows a schematic flowchart of another TAU method provided in an embodiment of the present application. In this method, the core network device converts the 4G TAI list associated with the second user identity of the terminal device into a 5G TAI list according to the pre-obtained mapping relationship between 4G TAI and 5G TAI, or converts the first user identity of the terminal device The associated 5G TAI list is converted to a 4G TAI list, and a 4G/5G TAI list (an example of a TAI set) is obtained. Then, the core network device can send the 4G/5G TAI list to the terminal device. That is to say, in this method, the terminal device does not perceive the mapping relationship between 4G TAI and 5G TAI. The TAU method shown in FIG. 10 includes 1001 to 1006.

It should be understood that FIG. 10 shows the steps or operations of the TAU method, but these steps or operations are only examples, and the embodiment of the present application may also perform other operations or variations of each operation in FIG. 10. In addition, the various steps in FIG. 10 may be performed in a different order from that presented in FIG. 10, and it is possible that not all operations in FIG. 10 are to be performed.

1001. The MME and AMF negotiate whether to enable the TAU optimization function of the terminal device.

Exemplarily, the MME and SMF may negotiate through signaling to determine whether to enable the TAU optimization function of the terminal device.

Optionally, before step 1001, the terminal device may send second indication information to the MME as the first user identity to indicate that the first user identity of the terminal device has the ability to support the TAU optimization function. And/or, the terminal device may send second indication information to the AMF as the second user identity to indicate that the second user identity of the terminal device has the ability to support the TAU optimization function.

1002. If it is determined that the TAU optimization function of the second user identity is enabled, the AMF sends first indication information to the terminal device of the second user identity, where the first indication information is used to enable the TAU optimization function.

Optionally, the AMF may also send the 4G/5G TAI list to the terminal device of the second user identity. It should be noted that at this time, AMF converts the 4G TAI list of the first user identity of the terminal device obtained from the MME into a 5G TAI list, and then obtains the 5G TAI list converted from the 4G TAI list and the 5G 5G of the second user identity. Take the union of the TAI list to obtain the 4G/5G TAI list. In other words, the 4G/5G TAI list is divided according to the NR TA division rule.

In some possible implementations, the AMF may send at least one of the first indication information and the 4G/5G TAI list to the terminal through a TAU accept message, or through an attach accept message. Device, but the embodiment of the present application is not limited to this.

In some possible implementations, the 4G/5G TAI list can also be sent to implicitly indicate that the TAU optimization function is enabled. At this time, it can also be considered that the first indication information is specifically a 4G/5G TAI list.

1003. If it is determined that the TAU optimization function of the first user identity is enabled, the MME sends first indication information to the terminal device of the first user identity, where the first indication information is used to enable the TAU optimization function.

Optionally, the MME may also send the 4G/5G TAI list to the terminal device of the first user identity. It should be noted that at this time, the MME converts the 5G TAI list of the second user identity of the terminal device obtained from the AMF into the 4G TAI list, and then obtains the 4G TAI list converted from the 5G TAI list and the 4G of the second user identity. Take the union of the TAI list to obtain the 4G/5G TAI list. In other words, the 4G/5G TAI list is divided according to the LTE TA division rule.

It should also be noted that the area corresponding to the 4G/5G TAI list in step 1002 is the same as the area corresponding to the 4G/5G TAI list in step 1003.

In some possible implementations, the MME may send at least one of the first indication information and the 4G/5G TAI list to the terminal of the second user identity through a TAU accept (accept) message, or through an attach accept (attach accept) message. Device, but the embodiment of the present application is not limited to this.

In the following, description is made by taking the terminal device of the first user identity to enable the TAU optimization function as an example. To enable the TAU optimization function for the terminal device of the second user identity, reference may be made to the description of enabling the TAU optimization function for the terminal device of the first user identity.

1004. The terminal device of the first user identity determines the first area.

Exemplarily, the terminal device of the first user identity may determine the first area according to the 4G/5G TAI list obtained from the MME.

1005: When the terminal device of the first user identity moves within the first area (or can also be described as within the first area), the TAU is not triggered.

1006. When the terminal device of the first user identity detects that the terminal device moves out of the first area, the terminal device uses the first user identity to initiate a TAU process to the MME.

Therefore, in this embodiment of the application, the MME or AMF obtains the 4G/5G TAI list according to the pre-obtained 4G TAI and 5G TAI mapping relationship, and then sends the 4G/5G TAI list to the terminal device, so that the terminal device is When a user identity or a second user identity detects moving out of the area corresponding to the 4G/5G TAI list, it initiates the tracking area location update process, which can prevent the terminal device from detecting moving out of the area corresponding to the 5G TAI list as the first user, and The TAU process initiated when entering the area corresponding to the 4G TAI list, and to avoid the TAU process initiated when the terminal device detects that it moves out of the area corresponding to the 4G TAI list as the second user and enters the area corresponding to the 5G TAI list, thereby It can help reduce frequent TAU reporting by terminal equipment, save air interface signaling overhead, and reduce power consumption of terminal equipment.

Please refer to FIG. 11, which shows a schematic flowchart of a paging method provided by an embodiment of the present application.

1110: The core network device determines the first area corresponding to the TAI set. Wherein, the first area includes the area corresponding to the first TAI list and the area corresponding to the second TAI list. For details, please refer to the above description. For brevity, details are not repeated here.

1120: The core network device is in the first area, and page the terminal device.

Here, the terminal device supports at least two user identities. The core network device may be a network side device to which the first user identity of the at least two user identities is registered. Therefore, step 1120 can also be described as that the core network device is in the first area and pages the terminal device of the first user identity.

Therefore, in this embodiment of the application, the core network device is used to page the terminal device in the first area corresponding to the TAI set, and the terminal device can initiate a tracking area location update when the terminal device detects that it has moved out of the area corresponding to the TAI set. During the process, the core network device paging the first user identity of the terminal device is implemented. Therefore, the embodiments of the present application can help reduce frequent TAU reporting by terminal devices, save air interface signaling overhead, reduce power consumption of terminal devices, and at the same time realize paging of terminal devices in the area corresponding to the TAI set.

Specifically, the core network device may convert the second TAI list into the third TAI list according to the mapping relationship between the TAI of the first communication standard and the TAI of the second communication standard, and then, according to the second TAI list and the third TAI List, the process of determining the first area. Specifically, the process of determining the first area by the terminal device is similar, and the above description can be referred to. For the sake of brevity, details are not repeated here.

Hereinafter, taking the terminal device in the scenario shown in FIG. 7 as an example, the paging method of the embodiment of the present application will be described in detail with reference to FIG. 12 and FIG. 13. The terminal device is registered to the 4G network as the first user, such as the first core network device, the first core network device includes, for example, an MME, and the terminal device is registered to the 5G network as the second user, such as the second core network. In the second core network device, for example, AMF is included. However, the embodiments of the present application are not limited to this. In the following, the solution of the embodiment of the present application is described by taking the first core network device as the MME and the second core network device as the AMF as an example.

It should be noted that the following describes the paging process of the terminal device of the second user identity by the AMF as an example. The paging process of the terminal equipment of the first user identity by the MME is similar to the paging process of the terminal equipment of the second user identity by the AMF. For specific implementation, please refer to the relevant description of the paging of the terminal equipment of the second user identity by AMF. Some simple adaptations need to be made, but they are also within the protection scope of the embodiments of the present application.

Please refer to FIG. 12, which shows a schematic flowchart of another paging method provided by an embodiment of the present application. In this method, the AMF pages the terminal device of the second user identity in the area corresponding to the 4G/5G TAI list. The method includes 1201 to 1204.

1201. The AMF determines the terminal device that needs to page the second user identity. For example, when the downlink data of the terminal device with the second user identity arrives, it can be determined that the terminal device with the second user identity needs to be paged.

1202. The AMF determines that the TAU optimization function of the terminal device of the second user identity is enabled.

1203. AFM determines the first area corresponding to the 4G/5G TAI list.

Specifically, the 4G/5G TAI list determined by the AMF can be referred to the above description. For brevity, details are not repeated here.

1204. The AMF pages the terminal device of the second user identity within the range of the first area.

Exemplarily, the AMF may send a paging message to the terminal device of the second user identity, and the paging message includes the terminal device identity of the terminal device under the second user identity.

Therefore, in this embodiment of the application, the AMF is used to page the terminal device in the area corresponding to the 4G/5G TAI list, and the tracking area can be initiated when the terminal device detects that it has moved out of the area corresponding to the 4G/5G TAI list. During the location update process, the AMF paging the second user identity of the terminal device is implemented. Therefore, the embodiments of the present application can help reduce frequent TAU reporting by terminal equipment, save air interface signaling overhead, reduce terminal equipment power consumption, and at the same time realize the search for terminal equipment in the area corresponding to the 4G/5G TAI list. call.

Please refer to FIG. 13, which shows a schematic flowchart of another paging method provided by an embodiment of the present application. In this method, the AMF pages the terminal equipment of the second user in the area corresponding to the 5G TAI list, and the MME pages the terminal equipment of the second user in the area corresponding to the 4G TAI list. The method includes 1301 to 1306.

1301. The AMF determines that the terminal device with the identity of the second user needs to be paged. For example, when the downlink data of the terminal device with the second user identity arrives, it can be determined that the terminal device with the second user identity needs to be paged.

1302. The AMF determines that the TAU optimization function of the terminal device of the second user identity is enabled.

1303. The AMF pages the terminal device of the second user identity within the range corresponding to the 5G TAI list.

Exemplarily, the AMF may send a paging message #1 to the terminal device of the second user identity, and the paging message #1 includes the terminal device identifier under the second user identity of the terminal device.

In some possible implementations, the AMF may send the paging message #1 to the gNB (an example of the access network device where the terminal device resides as the second user).

1304. The AMF sends a paging message, such as paging message #2, to the MME. The paging message #2 is used to page the terminal device of the second user identity in the area corresponding to the 4G TAI list.

That is to say, in this embodiment of the application, AMF can send a paging message to the terminal device of the second user identity in the area corresponding to the 5G TAI list, and the MME can send the paging message to the terminal device of the second user identity in the area corresponding to the 4G TAI list The paging message can thereby realize the paging of the terminal device of the second user identity in the area corresponding to the 4G/5G TAI list. In other words, the MME can assist the AMF to send paging messages in the area corresponding to the 4G TAI list to page the terminal device of the second user identity.

In a possible implementation manner, the paging message #2 may include third indication information, and the third indication information is used to indicate that the paging message #2 is to page the terminal device of the second user identity.

Exemplarily, the paging message #2 may include a field for indicating a paging type, and the paging type field is indicated by using an extension field. Here, the paging type includes the paging of the first user identity and the paging of the second user identity.

In some possible implementations, the AMF may know in advance that the terminal device supports the first user identity and the second user identity (that is, the first user identity and the second user identity are associated user identities), and then indicate the current transmission through the above-mentioned extension field. Is the paging message sent to the first user identity or the second user identity. A simple and concrete example, one bit can be extended in the paging message. When the bit value is "1", it means that the current paging message is a paging message sent to the first user identity of the terminal device registered in the own network. When the bit value is "0", it means that the current paging message is a paging message sent to the user identity associated with the first user identity (for example, the second user identity). Or, it can be reversed, which is not limited in the embodiment of the present application.

In some optional embodiments, when a terminal device can support multiple user identities, the number of bits used to distinguish paging objects (that is, different user identities) may be multiple. At this time, different values of the number of bits correspond to paging messages of different user identities.

1305. The MME pages the terminal device of the second user identity within the area range corresponding to the 4G TAI list.

Exemplarily, the MME may send a paging message #2 to the terminal device of the first user identity, and the paging message #2 is used to page the terminal device of the second user identity in the area corresponding to the 4G TAI list.

In some possible implementations, the MME may send a paging message #2 to the eNB (an example of an access network device where the terminal device resides as the first user). After receiving the paging message #2, the eNB sends an air interface paging message #2 to the terminal device of the first user identity. The air interface paging message #2 is used to send information to the second user identity in the area corresponding to the 4G TAI list. The terminal device performs paging.

In addition, in some optional embodiments, the MME may also send a paging message #3 to the eNB. The paging message #3 is used to send a paging message to the first terminal device in the area corresponding to the 4G TAI list. User identity for paging. After receiving the paging message #3, the eNB sends an air interface paging message #3 to the terminal device of the first user identity. The air interface paging message #3 is used to send information to the first user identity in the area corresponding to the 4G TAI list. The terminal device performs paging.

When the third indication information is not included in the air interface paging message #2, the air interface paging message #2 and the air interface paging message #3 can be distinguished in the following manner:

Method 1: Air interface paging message #2 and air interface paging message #3 use different paging configurations.

Exemplarily, the air interface paging message #2 may use the second paging configuration, and the air interface paging message #3 may use the first paging configuration, where the first paging configuration and the second paging configuration are different.

Manner 2: Air interface paging message #2 and air interface paging message #3 use different paging channels, that is, the physical resources used to transmit air interface paging message #2 and air interface paging message #3 are different.

Exemplarily, the air interface paging message #2 is transmitted through the second paging physical resource, and the air interface paging message #3 is transmitted using the first paging physical resource, where the first paging physical resource is different from the second paging physical resource.

Manner 3: The PDCCH corresponding to the air interface paging message #2 and the PDCCH corresponding to the air interface paging message #3 are scrambled using different paging radio network temporary identifiers (P-RNTI).

Exemplarily, the PDCCH corresponding to paging message #2 is scrambled by the second P-RNTI, and the PDCCH corresponding to paging message #3 is scrambled by the first P-RNTI.

1306. The terminal device determines that the received paging message in 1305 is the paging message of the second user identity.

Exemplarily, the terminal device may receive the paging message as the first user, and then according to whether the paging message carries the third indication information, or according to the transmission mode of the paging message, or configuration parameters, or the paging message The scrambling method of the corresponding PDCCH determines whether the paging message is the own paging message or the paging message of the second user identity.

Therefore, in this embodiment of the application, the AMF is used to page the terminal equipment in the area corresponding to the 5G TAI list, and the MME is used to page the terminal equipment in the area corresponding to the 4G TAI list. When moving out of the area corresponding to the 4G/5G TAI list, in the process of initiating the tracking area location update, the AMF paging the second user identity of the terminal device is implemented. Therefore, the embodiments of the present application can help reduce frequent TAU reporting by terminal equipment, save air interface signaling overhead, reduce terminal equipment power consumption, and at the same time realize the search for terminal equipment in the area corresponding to the 4G/5G TAI list. call.

It should be noted that, for ease of understanding, the foregoing description of the solution of the present application takes the first core network device as the MME and the second core network device as the AMF as an example, but the embodiments of the application are not limited to this. For example, the MME can also be replaced with the first core network equipment, and the AMF can also be replaced with the second core network equipment, both of which fall within the protection scope of the embodiments of the present application.

According to the foregoing method, FIG. 14 is a schematic diagram of a wireless communication apparatus 1400 provided in an embodiment of this application.

In some embodiments, the apparatus 1400 may be a terminal device, or a chip or circuit, for example, a chip or circuit that can be provided in a terminal device.

In some embodiments, the device 1400 may be a core network device, or a chip or circuit, such as a chip or circuit that can be provided in a core network device.

In some embodiments, the apparatus 1400 may be an access network device, or a chip or circuit, for example, a chip or circuit that can be provided in an access network device.

In a possible manner, the apparatus 1400 may include a processing unit 1410 (that is, an example of a processor) and a transceiver unit 1430. In some possible implementation manners, the processing unit 1410 may also be referred to as a determining unit. In some possible implementations, the transceiver unit 1430 may include a receiving unit and a sending unit.

Optionally, the transceiver unit 1430 may be implemented by a transceiver or a transceiver-related circuit or interface circuit.

Optionally, the device may further include a storage unit 1420. In one possible manner, the storage unit 1420 is used to store instructions. Optionally, the storage unit may also be used to store data or information. The storage unit 1420 may be realized by a memory.

In some possible designs, the processing unit 1410 is configured to execute the instructions stored in the storage unit 1420, so that the apparatus 1400 implements the steps performed by the terminal device in the foregoing method. Alternatively, the processing unit 1410 may be used to call the data of the storage unit 1420, so that the apparatus 1400 implements the steps performed by the terminal device in the foregoing method.

In some possible designs, the processing unit 1410 is configured to execute the instructions stored by the storage unit 1420, so that the apparatus 1400 implements the steps performed by the core network device in the foregoing method. Alternatively, the processing unit 1410 may be used to call the data of the storage unit 1420, so that the apparatus 1400 implements the steps performed by the core network device in the foregoing method.

In some possible designs, the processing unit 1410 is configured to execute the instructions stored in the storage unit 1420, so that the apparatus 1400 implements the steps performed by the access network device in the foregoing method. Alternatively, the processing unit 1410 may be used to call the data of the storage unit 1420, so that the apparatus 1400 implements the steps performed by the core network device in the foregoing method.

For example, the processing unit 1410, the storage unit 1420, and the transceiver unit 1430 can communicate with each other through internal connection paths to transfer control and/or data signals. For example, the storage unit 1420 is used to store a computer program, and the processing unit 1410 can be used to call and run the calculation program from the storage unit 1420 to control the transceiver unit 1430 to receive and/or send signals to complete the above method. Steps for terminal equipment or core network equipment or access network equipment. The storage unit 1420 may be integrated in the processing unit 1410, or may be provided separately from the processing unit 1410.

Optionally, if the apparatus 1400 is a communication device (for example, a terminal device, or a core network device, or an access network device), the transceiver unit 1430 includes a receiver and a transmitter. Among them, the receiver and the transmitter may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers.

Optionally, if the device 1400 is a chip or a circuit, the transceiver unit 1430 includes an input interface and an output interface.

As an implementation manner, the function of the transceiving unit 1430 may be implemented by a transceiving circuit or a dedicated chip for transceiving. The processing unit 1410 may be realized by a dedicated processing chip, a processing circuit, a processing unit, or a general-purpose chip.

As another implementation manner, a general-purpose computer may be considered to implement the communication device (such as a terminal device, or an access network device, or a core network device) provided in the embodiments of the present application. That is to say, the program code for realizing the functions of the processing unit 1410 and the transceiving unit 1430 is stored in the storage unit 1420. The general processing unit implements the functions of the processing unit 1410 and the transceiving unit 1430 by executing the code in the storage unit 1420.

In some embodiments, the apparatus 1400 may be a terminal device, or a chip or circuit provided in the terminal device.

When the apparatus 1400 is a terminal device, or a chip or circuit provided in the terminal device, the processing unit 1410 is configured to determine the first area corresponding to the TAI set of the tracking area identification, wherein the first area includes the first TAI list corresponding And the area corresponding to the second TAI list, the first TAI list is associated with the first user identity of the terminal device, and the second TAI list is associated with the second user identity of the terminal device.

The transceiver unit 1430 is configured to initiate a tracking area update TAU process when detecting that it moves out of the first area.

In some possible implementations, the TAI set is determined according to the first TAI list and the third TAI list, and the third TAI list is based on the mapping relationship between the TAI of the first communication standard and the TAI of the second communication standard It is obtained by converting the second TAI list, wherein the first communication standard is the communication standard of the first user identity, and the second communication standard is the communication standard of the second user identity.

In some possible implementation manners, the mapping relationship comes from the first core network device or the second core network device.

In some possible implementation manners, the TAI set comes from the first core network device or the second core network device.

In some possible implementation manners, the processing unit 1410 is further configured to determine to enable the TAU optimization function according to the first indication information, where the first indication information comes from the first core network device.

In some possible implementations, the transceiving unit 1430 is further configured to use the identity of the first user to send second indication information to the first core network device, where the second indication information is used to indicate that the terminal device supports The TAU optimization function.

In some possible implementations, the transceiver unit 1430 is specifically configured to use the identity of the first user to send a first request for updating a tracking area to a first core network device, where the first request includes the terminal device The first terminal device identifier corresponding to the first user identity, the first terminal device identifier is determined according to the second terminal device identifier pre-stored by the terminal device, and the second terminal device identifier is the same as the terminal device identifier. Whether the TAU optimization function of the first user identity of the device is enabled is related.

In some possible implementation manners, the first terminal device identifier is a globally unique temporary identifier GUTI under the first communication standard.

In some possible implementations, the transceiving unit 1430 is further configured to receive a second paging message as the second user, and the second paging message is used to respond to an area corresponding to the second TAI list. Paging with the first user identity of the terminal device.

In some possible implementation manners, the second paging message includes third indication information, and the third indication information is used to indicate that the second paging message is for the first user identity of the terminal device. Paging.

In some possible implementations, the transceiving unit 1430 is further configured to receive a third paging message as the second user, and the third paging message is used to be in an area corresponding to the second TAI list, Paging the second user identity of the terminal device;

When the device 1400 is configured in or is a terminal device, each module or unit in the device 1400 can be used to execute various actions or processing procedures performed by the terminal device in the foregoing method. Here, in order to avoid redundant description, detailed descriptions are omitted.

In some embodiments, the apparatus 1400 may be a core network device, or a chip or circuit provided in the core network device. When the apparatus 1400 is a core network device, or a chip or circuit provided in the core network device, the processing unit 1410 is configured to determine the first area corresponding to the tracking area identifier TAI set, where the first area includes the first area An area corresponding to a TAI list and an area corresponding to a second TAI list, where the first TAI list is associated with a first user identity of the terminal device, and the second TAI list is associated with a second user identity of the terminal device.

The transceiver unit 1430 is configured to page the terminal device of the first user identity in the first area.

In some possible implementations, the transceiver unit 1430 is specifically configured to send a paging message to the terminal device of the first user identity in the first area, where the paging message includes the first user The identification of the terminal device associated with the identity.

In some possible implementation manners, the transceiving unit 1430 is specifically configured to send a first paging message to the terminal device of the first user identity in the area corresponding to the first TAI list, and the first paging message The call message includes the terminal device identifier associated with the first user identity.

The transceiving unit 1430 is further configured to send a second paging message to a second core network device, where the second paging message is used to provide information about the identity of the first user in an area corresponding to the second TAI list. The terminal device performs paging.

In some possible implementation manners, the second paging message includes third indication information, and the third indication information is used to indicate that the second paging message is for the terminal device of the first user identity. Paging.

In some possible implementation manners, the transceiving unit 1430 is further configured to send the TAI set to the terminal device of the first user identity.

In some possible implementations, the transceiving unit 1430 is further configured to send the mapping relationship between the TAI of the first communication standard and the TAI of the second communication standard to the terminal device of the first user identity, wherein the first communication standard A communication standard is the communication standard of the first user identity, and the second communication standard is the communication standard of the second user identity.

In some possible implementation manners, the transceiver unit 1430 is further configured to send first indication information to the terminal device of the first user identity, where the first indication information is used to enable a tracking area update TAU optimization function.

In some possible implementations, the transceiving unit 1430 is further configured to receive second indication information sent by the terminal device as the first user, and the second indication information is used to indicate that the terminal device supports the TAU Optimization function.

In some possible implementation manners, the transceiving unit 1430 is further configured to receive a first request for updating a tracking area sent by the terminal device as the first user, and the first request includes the terminal device's The first terminal device identifier corresponding to the first user identity, the first terminal device identifier is determined according to the second terminal device identifier pre-stored by the terminal device, and the second terminal device identifier is the same as the terminal device identifier. Whether the TAU function of the first user identity is enabled is related.

When the device 1400 is configured in or is a core network device, each module or unit in the device 1400 can be used to perform various actions or processing procedures performed by the core network device in the above method. Here, in order to avoid repetition, the details are omitted. Description.

In some embodiments, the apparatus 1400 may be an access network device, or a chip or circuit provided in the access network device. When the apparatus 1400 is an access network device, or a chip or circuit provided in the access network device, the processing unit 1410 is configured to determine a second paging message, and the second paging message is The area corresponding to the TAI list pages the terminal device of the first user identity, where the terminal device supports the first user identity and the second user identity, and the second TAI list is related to the second user identity. Identity association.

The transceiving unit 1430 is further configured to send the second paging message to the terminal device with the second user identity in the area corresponding to the second TAI list.

For an example, the processing unit 1410 may control the transceiver unit 1430 to receive the second paging message from the core network device.

In some possible implementations, the transceiving unit 1430 is specifically configured to send a third paging message, and the third paging message is used to communicate with the second user identity in the area corresponding to the second TAI list. The terminal device performs paging;

When the device 1400 is configured in or is an access network device, each module or unit in the device 1400 can be used to perform various actions or processing procedures performed by the access network device in the foregoing method. Here, in order to avoid repetition, it is omitted. Its detailed description.

For the concepts related to the technical solutions provided in the embodiments of the present application and related concepts, explanations, detailed descriptions, and other steps involved in the device 1400, please refer to the descriptions of these contents in the foregoing method or other embodiments, which are not repeated here.

FIG. 15 is a schematic structural diagram of a terminal device 1500 provided by this application. The terminal device 1500 can execute the actions performed by the terminal device in the foregoing method embodiments.

For ease of description, FIG. 15 only shows the main components of the terminal device. As shown in FIG. 15, the terminal device 1500 includes a processor, a memory, a control circuit, an antenna, and an input and output device.

The processor is mainly used to process the communication protocol and communication data, and to control the entire terminal device, execute the software program, and process the data of the software program. For example, it is used to support the terminal device to execute the above-mentioned transmission precoding matrix instruction method embodiment. The described action. The memory is mainly used to store software programs and data, for example, to store the codebook described in the above embodiments. The control circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals. The control circuit and the antenna together can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.

When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.

Those skilled in the art can understand that, for ease of description, FIG. 15 only shows a memory and a processor. In actual terminal devices, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.

For example, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process communication protocols and communication data. The central processing unit is mainly used to control the entire terminal device, execute software programs, and process software programs. data. The processor in FIG. 15 integrates the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit may also be independent processors and are interconnected by technologies such as a bus. Those skilled in the art can understand that the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and the various components of the terminal device may be connected through various buses. The baseband processor may 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 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.

Exemplarily, in the embodiment of the present application, the antenna and the control circuit with the transceiving function can be regarded as the transceiving unit 1510 of the terminal device 1500, and the processor with the processing function can be regarded as the processing unit 1520 of the terminal device 1500. As shown in FIG. 15, the terminal device 1500 includes a transceiving unit 1510 and a processing unit 1520. The transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on. Optionally, the device for implementing the receiving function in the transceiving unit 1510 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiving unit 1510 can be regarded as the sending unit, that is, the transceiving unit includes a receiving unit and a sending unit. Exemplarily, the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc., and the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.

FIG. 16 is a schematic structural diagram of an access network device 1600 provided by an embodiment of this application, which can be used to implement the access device (for example, the first access network device, the second access network device, or the third access network device) in the above method. Access network equipment) function. The access network device 1600 includes one or more radio frequency units, such as a remote radio unit (RRU) 1610 and one or more baseband units (BBU) (also referred to as digital units, digital units, DU) 1620. The RRU 1610 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 1611 and a radio frequency unit 1612. The RRU 1610 part is mainly used for receiving and sending of radio frequency signals and conversion of radio frequency signals and baseband signals, for example, for sending the signaling messages described in the foregoing embodiments to terminal equipment. The BBU1620 part is mainly used to perform baseband processing, control the base station, and so on. The RRU 1610 and the BBU 1620 may be physically arranged together, or may be physically separated, that is, a distributed base station.

The BBU 1620 is the control center of the base station, and may also be called a processing unit, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, and so on. For example, the BBU (processing unit) 1620 may be used to control the base station 40 to execute the operation procedure of the network device in the foregoing method embodiment.

In an example, the BBU 1620 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network of a single access standard (such as an LTE system or a 5G system), and may also support different connections. Enter the standard wireless access network. The BBU 1620 also includes a memory 1621 and a processor 1622. The memory 1621 is used to store necessary instructions and data. For example, the memory 1621 stores the codebook in the above-mentioned embodiment and the like. The processor 1622 is used to control the base station to perform necessary actions, for example, used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment. The memory 1621 and the processor 1622 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.

In a possible implementation manner, with the development of system-on-chip (SoC) technology, all or part of the functions of part 1620 and part 1610 can be realized by SoC technology, for example, a base station function chip Realization, the base station function chip integrates a processor, a memory, an antenna interface and other devices, the program of the base station related functions is stored in the memory, and the processor executes the program to realize the related functions of the base station. Optionally, the base station function chip can also read a memory external to the chip to implement related functions of the base station.

It should be understood that the structure of the access network device illustrated in FIG. 16 is only a possible form, and should not constitute any limitation in the embodiment of the present application. This application does not exclude the possibility of other types of base station structures that may appear in the future.

It should be understood that, in this embodiment of the application, the processor may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), and dedicated integration Circuit (application specific integrated circuit, ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It should also be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of random access memory (RAM) are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (DRAM), and synchronous dynamic random access memory (DRAM). Access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).

The foregoing embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, the above-mentioned embodiments may be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in 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 a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more sets of available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium may be a solid state drive.

The embodiment of the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the steps performed by the terminal device in any of the above embodiments or the steps performed by the core network device are implemented. Or the steps performed by the access network equipment.

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

The embodiment of the present application also provides a system chip, which includes a communication unit and a processing unit. The processing unit may be a processor, for example. The communication unit may be, for example, a communication interface, an input/output interface, a pin or a circuit, or the like. The processing unit can execute computer instructions so that the chip in the communication device executes the steps performed by the terminal device provided in the embodiments of the present application, or the steps performed by the core network device, or the steps performed by the access network device.

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

According to the method provided in the embodiment of the present application, the embodiment of the present application also provides a communication system, which includes the aforementioned core network equipment, access network equipment, and terminal equipment.

The various embodiments in this application can be used independently or in combination, which is not limited here.

In addition, various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques. The term "article of manufacture" used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, various storage media described herein may represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.

It should be understood that "and/or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B alone exists. Happening. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. "At least one" refers to one or more than one; "At least one of A and B", similar to "A and/or B", describes the association relationship of associated objects, indicating that there can be three relationships, for example, A and B At least one of them can mean: A alone exists, A and B exist at the same time, and B exists alone.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A wireless communication method, characterized in that it comprises:

Determine the first area corresponding to the TAI set of the tracking area identification, where the first area includes the area corresponding to the first TAI list and the area corresponding to the second TAI list, and the first TAI list is related to the first user of the terminal device. Identity association, the second TAI list is associated with a second user identity of the terminal device;

When it is detected that it moves out of the first area, the tracking area update TAU process is initiated.
The method according to claim 1, wherein the TAI set is determined based on the first TAI list and the third TAI list, and the third TAI list is based on the TAI and the second TAI of the first communication standard. The mapping relationship between the TAIs of the communication standards is obtained by transforming the second TAI list, wherein the first communication standard is the communication standard of the first user identity, and the second communication standard is the second communication standard. 2. The communication system of the user's identity.
The method according to claim 2, wherein the mapping relationship comes from a first core network device or a second core network device.
The method according to claim 1, wherein the TAI set comes from a first core network device or a second core network device.
The method according to any one of claims 1-4, wherein the method further comprises:

It is determined to enable the TAU optimization function according to the first indication information, where the first indication information comes from the first core network device.
The method according to claim 5, further comprising: using the identity of the first user, sending second indication information to the first core network device, the second indication information being used to instruct the terminal The device supports the TAU optimization function.
The method according to any one of claims 1-6, wherein the initiating a TAU process comprises:

As the first user identity, send a first request for updating the tracking area to the first core network device, where the first request includes the first terminal device identity corresponding to the first user identity of the terminal device, so The first terminal device identifier is determined according to the second terminal device identifier pre-stored by the terminal device, where the second terminal device identifier is related to whether the TAU optimization function of the first user identity of the terminal device is enabled or not .
The method according to claim 7, characterized by comprising: the first terminal device identifier is a globally unique temporary identifier GUTI under the first communication standard.
The method according to any one of claims 1-8, wherein the method further comprises:

Receive a second paging message as the second user identity, where the second paging message is used to page the first user identity of the terminal device in an area corresponding to the second TAI list .
The method according to claim 9, wherein the second paging message contains third indication information, and the third indication information is used to indicate that the second paging message is for the terminal device. Paging with the identity of the first user.
The method according to claim 9, further comprising:

Receive a third paging message as the second user identity, where the third paging message is used to page the second user identity of the terminal device in the area corresponding to the second TAI list call;

Wherein, the second paging message is transmitted through a second paging configuration and/or a second paging physical resource, and the third paging message is transmitted through a first paging configuration and/or a first paging physical resource; or,

The physical downlink control channel PDCCH corresponding to the second paging message is scrambled by the second paging radio network temporary identification P-RNTI, and the PDCCH corresponding to the third paging message is scrambled by the first P-RNTI of.
A wireless communication method, characterized in that it comprises:

Determine the first area corresponding to the TAI set of the tracking area identification, where the first area includes the area corresponding to the first TAI list and the area corresponding to the second TAI list, and the first TAI list is related to the first user of the terminal device. Identity association, the second TAI list is associated with a second user identity of the terminal device;

In the first area, page the terminal device of the first user identity.
The method according to claim 12, wherein the TAI set is determined according to the first TAI list and the third TAI list, and the third TAI list is based on the TAI and the second TAI of the first communication standard. The mapping relationship between the TAIs of the communication standards is obtained by converting the second TAI list, wherein the first communication standard is the communication standard of the first user identity, and the second communication standard is the second communication standard. The communication system of the user's identity.
The method according to claim 12 or 13, wherein the paging the terminal device of the first user identity in the first area comprises:

In the first area, a paging message is sent to the terminal device of the first user identity, where the paging message includes the terminal device identifier associated with the first user identity.
The method according to claim 12 or 13, wherein the paging the terminal device of the first user identity in the first tracking area comprises:

In the area corresponding to the first TAI list, send a first paging message to the terminal device of the first user identity, where the first paging message includes the terminal device identity associated with the first user identity ；

Sending a second paging message to a second core network device, where the second paging message is used to page the terminal device with the first user identity in an area corresponding to the second TAI list.
The method according to claim 15, wherein the second paging message contains third indication information, and the third indication information is used to indicate that the second paging message is for the first user The terminal device of the identity performs paging.
The method according to any one of claims 12-16, further comprising:

Sending the TAI set to the terminal device of the first user identity.
The method according to any one of claims 12-16, further comprising:

Sending the mapping relationship between the TAI of the first communication standard and the TAI of the second communication standard to the terminal device of the first user identity, where the first communication standard is the communication standard of the first user identity, The second communication standard is a communication standard of the second user identity.
The method according to any one of claims 12-18, further comprising:

Sending first indication information to the terminal device of the first user identity, where the first indication information is used to enable a tracking area update TAU optimization function.
The method according to claim 19, further comprising:

Receiving second indication information sent by the terminal device as the first user, where the second indication information is used to indicate that the terminal device supports the TAU optimization function.
The method according to any one of claims 12-19, further comprising:

Receiving a first request for updating a tracking area sent by the terminal device as the first user identity, where the first request includes a first terminal device identifier corresponding to the first user identity of the terminal device, and The first terminal device identifier is determined according to the second terminal device identifier pre-stored by the terminal device, wherein the second terminal device identifier is related to whether the TAU function of the first user identity of the terminal device is enabled.
The method according to claim 21, wherein the first terminal device identifier is a globally unique temporary identifier GUTI under the first communication standard.
A wireless communication method, characterized in that it comprises:

Determine a second paging message, the second paging message is used to page the terminal device of the first user identity in the area corresponding to the second TAI list, wherein the terminal device supports the first user An identity and a second user identity, the second TAI list is associated with the second user identity;

Sending the second paging message to the terminal device of the second user identity in the area corresponding to the second TAI list.
The method according to claim 23, wherein the second paging message contains third indication information, and the third indication information is used to indicate that the second paging message is for the first user The terminal device of the identity performs paging.
The method according to claim 23, further comprising:

Sending a third paging message, where the third paging message is used to page the terminal device of the second user identity in an area corresponding to the second TAI list;

Wherein, the second paging message is transmitted through a second paging configuration and/or a second paging physical resource, and the third paging message is transmitted through a first paging configuration and/or a first paging physical resource; or,

The PDCCH corresponding to the second paging message is scrambled by the second P-RNTI, and the PDCCH corresponding to the third paging message is scrambled by the first P-RNTI.
A wireless communication device, characterized in that it comprises:

The processing unit is configured to determine a first area corresponding to a TAI set of tracking area identifiers, where the first area includes an area corresponding to a first TAI list and an area corresponding to a second TAI list, and the first TAI list is related to the The first user identity of the terminal device is associated, and the second TAI list is associated with the second user identity of the terminal device;

The transceiver unit is used to initiate a tracking area update TAU process when detecting that it moves out of the first area.
The apparatus according to claim 26, wherein the TAI set is determined based on the first TAI list and the third TAI list, and the third TAI list is based on the TAI and the second TAI of the first communication standard. The mapping relationship between the TAIs of the communication standards is obtained by transforming the second TAI list, wherein the first communication standard is the communication standard of the first user identity, and the second communication standard is the second communication standard. 2. The communication system of the user's identity.
The apparatus according to claim 27, wherein the mapping relationship comes from a first core network device or a second core network device.
The apparatus according to claim 26, wherein the TAI set comes from a first core network device or a second core network device.
The apparatus according to any one of claims 26-29, wherein the processing unit is further configured to determine to enable the TAU optimization function according to first indication information, and the first indication information comes from a first core network device.
A wireless communication device, characterized in that it comprises:

A processing unit, configured to determine a first area corresponding to a TAI set of tracking area identifiers, where the first area includes an area corresponding to a first TAI list and an area corresponding to a second TAI list, and the first TAI list is related to the terminal The first user identity of the device is associated, and the second TAI list is associated with the second user identity of the terminal device;

The transceiver unit is configured to page the terminal device of the first user identity in the first area.
The apparatus according to claim 31, wherein the TAI set is determined based on the first TAI list and the third TAI list, and the third TAI list is based on the TAI and the second TAI of the first communication standard. The mapping relationship between the TAIs of the communication standards is obtained by converting the second TAI list, wherein the first communication standard is the communication standard of the first user identity, and the second communication standard is the second The communication system of the user's identity.
The device according to claim 31 or 32, wherein the transceiver unit is specifically configured to:

In the first area, a paging message is sent to the terminal device of the first user identity, where the paging message includes the terminal device identifier associated with the first user identity.
The device according to claim 31 or 32, wherein the transceiver unit is specifically configured to:

In the area corresponding to the first TAI list, send a first paging message to the terminal device of the first user identity, where the first paging message includes the terminal device identity associated with the first user identity ；

Sending a second paging message to a second core network device, where the second paging message is used to page the terminal device with the first user identity in an area corresponding to the second TAI list.
The apparatus according to claim 34, wherein the second paging message contains third indication information, and the third indication information is used to indicate that the second paging message is for the first user The terminal device of the identity performs paging.
The apparatus according to any one of claims 31-35, wherein the transceiver unit is further configured to send the TAI set to the terminal device of the first user identity.
The device according to any one of claims 31-35, wherein the transceiver unit is further configured to:

Sending the mapping relationship between the TAI of the first communication standard and the TAI of the second communication standard to the terminal device of the first user identity, where the first communication standard is the communication standard of the first user identity, The second communication standard is a communication standard of the second user identity.
The apparatus according to any one of claims 31-37, wherein the transceiving unit is further configured to send first indication information to the terminal device of the first user identity, and the first indication information is used for Update the TAU optimization function in the enable tracking area.
A communication device, characterized in that the device comprises:

A processor and a communication interface, where the processor is used to call and execute instructions from the communication interface, and when the processor executes the instructions, the method according to any one of claims 1-25 is implemented.
A computer storage medium, characterized in that it is used to store a computer program, and the computer program includes instructions for executing the method according to any one of claims 1-25.