WO2022042153A1 - Tracking area update method and apparatus, and terminal device and storage medium - Google Patents

Abstract

Disclosed are a tracking area update method and apparatus, and a terminal device and a storage medium, which belong to the technical field of communications. The method comprises: in response to a TAC changing, triggering a TAU flow; in response to a terminal device being in a TAC ping-pong state, adding a target TAC to a TAC disable list, wherein the TAC ping-pong state refers to a state of repeatedly changing between at least two TACs, and the target TAC is a TAC other than the current TAC in the TAC ping-pong state; and in response to the TAC changing again and a TAC to be switched to belonging to the TAC disable list, disabling a TAU flow triggered by the current TAC change event. By means of the solution provided in the embodiments of the present application, the frequent update of a tracking area in a TAC ping-pong state can be prevented, and when a terminal device is located at the border position of at least two tracking areas, the reduction in the power consumption of the terminal device and the improvement of the transmission performance of the terminal device are facilitated.

Description

Tracking area update method, device, terminal device and storage medium

This application claims the priority of the Chinese Patent Application No. 202010871378.4 filed on August 26, 2020, and the invention title is "Method, Apparatus, Terminal Equipment and Storage Medium for Updating Tracking Area", the entire contents of which are incorporated by reference in in this application.

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a method, apparatus, terminal device, and storage medium for updating a tracking area.

Background technique

In a Long Term Evolution (Long Term Evolution, LTE) system, a tracking area (Tracking Area, TA) is a basic unit for location update and paging.

When the terminal device is attached, the Mobility Management Entity (MME) functional entity issues a Tracking Area Identity (TAI) list to the terminal device, which is stored by the terminal device. When the terminal equipment needs to be paged, the network initiates paging in all cells included in the TAI list. When the terminal device moves within the cells included in the TAI list, it does not need to trigger the Tracking Area Update (TAU) process. When the terminal device moves to a TA and the TA does not belong to the TAI list, the terminal device needs to Trigger the TAU process so that the MME can re-deliver the TAI list to the terminal device.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method, apparatus, terminal device, and storage medium for updating a tracking area. The technical solution is as follows:

On the one hand, an embodiment of the present application provides a method for updating a tracking area, which is applied to a terminal device, and the method includes:

In response to the tracking area code (Tracking Area Code, TAC) changing, trigger the TAU process;

In response to the terminal device being in a TAC ping-pong state, a target TAC is added to the TAC disabled list, the TAC ping-pong state refers to a state that repeatedly changes between at least two TACs, and the target TAC is the TAC ping-pong state except the current TAC other than TAC;

In response to the TAC changing again, and the TAC to be switched belongs to the TAC disabled list, the TAU process triggered by the current TAC change event is disabled.

On the other hand, an embodiment of the present application provides an apparatus for updating a tracking area, which is applied to a terminal device, and the apparatus includes:

The update module is used to trigger the TAU process in response to the change of the TAC;

The adding module is configured to add a target TAC to the TAC disabled list in response to the terminal device being in a TAC ping-pong state, where the TAC ping-pong state refers to a state that repeatedly changes between at least two TACs, and the target TAC is TAC ping-pong A TAC other than the current TAC in the state;

The holding module is configured to prohibit the TAU process triggered by the current TAC change event in response to the TAC changing again and the TAC to be switched belongs to the TAC disabled list.

On the other hand, an embodiment of the present application provides a terminal device, the terminal device includes a processor and a memory; the memory stores at least one instruction, and the at least one instruction is used to be executed by the processor to implement the The method for updating the tracking area described in the above aspect.

In another aspect, a computer-readable storage medium is provided, the storage medium stores at least one instruction for being executed by a processor to implement the method for updating a tracking area as described in the above aspects.

On the other hand, an embodiment of the present application provides a computer program product or computer program, where the computer program product or computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the tracking area update method provided by the above aspects.

Description of drawings

FIG. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application;

FIG. 2 shows a structural block diagram of a terminal device provided by an exemplary embodiment of the present application;

3 is a schematic diagram of the relationship between tracking areas in a tracking area list shown in an exemplary embodiment of the present application;

FIG. 4 shows a flowchart of a method for updating a tracking area provided by an exemplary embodiment of the present application;

FIG. 5 shows a flowchart of a method for updating a tracking area provided by another exemplary embodiment of the present application;

6 shows a flowchart of a method for updating a tracking area provided by another exemplary embodiment of the present application;

7 is a schematic diagram of the implementation of a tracking area update process provided by an exemplary embodiment of the present application;

8 is a flowchart of a tracking area update process provided by an exemplary embodiment of the present application;

FIG. 9 shows a structural block diagram of an apparatus for updating a tracking area provided by an embodiment of the present application.

detailed description

In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

As used herein, "plurality" refers to two or more. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects are an "or" relationship.

FIG. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application. The communication system may include: an access network 12 and a terminal device 13 .

The access network 12 includes several network devices 120 . The network device 120 may be a base station, which is a device deployed in an access network to provide a wireless communication function for a terminal device. The base station may include various forms of macro base station, micro base station, relay station, access point and so on. In systems using different radio access technologies, the names of devices with base station functions may be different. For example, in LTE systems, they are called evolved Node Bs (eNodeBs) or eNBs; in 5G NR- In the U system, it is called gNodeB or gNB. As communication technology evolves, the description of "base station" may change. For the convenience of the embodiments of the present application, the above-mentioned apparatuses for providing a wireless communication function for the terminal device 13 are collectively referred to as network devices.

The terminal device 13 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment, mobile stations (Mobile Station, MS) , terminal device, etc. For the convenience of description, the devices mentioned above are collectively referred to as terminal devices. The network device 120 and the terminal device 13 communicate with each other through a certain air interface technology, such as a Uu interface.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a wideband Code Division Multiple Access (CDMA) system (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term Evolution, LTE) system, LTE Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (TDD) systems, Advanced Long Term Evolution (LTE-A) systems, New Radio (NR) systems, evolution systems of NR systems, LTE on unlicensed frequency bands (LTE-based access to Unlicensed spectrum, LTE-U) system, NR-U system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next-generation communication systems or other communication systems, etc.

The method for updating the tracking area provided by the embodiment of the present application is used for the terminal device 13 in the communication system shown in FIG. 1 , and the method provided by the embodiment of the present application can be used for communication of 3G system, 4G system, 5G system and even further evolved system, which is not limited in this embodiment of the present application.

Please refer to FIG. 2 , which shows a structural block diagram of a terminal device provided by an exemplary embodiment of the present application. The terminal device 13 in this application may include one or more of the following components: a processor 131 , a memory 132 , a receiver 133 and a transmitter 134 .

The processor 131 may include one or more processing cores. The processor 131 uses various interfaces and lines to connect various parts of the entire terminal device 13, and executes by running or executing the instructions, programs, code sets or instruction sets stored in the memory 132, and calling the data stored in the memory 132. Various functions of the terminal device 13 and processing data. Optionally, the processor 131 may adopt at least one of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). A hardware form is implemented. The processor 131 may integrate one or more of a central processing unit (Central Processing Unit, CPU), a graphics processor (Graphics Processing Unit, GPU), a neural network processor (Neural-network Processing Unit, NPU), and a modem, etc. The combination. Among them, the CPU mainly handles the operating system, user interface and applications; the GPU is used to render and draw the content that needs to be displayed on the touch screen; the NPU is used to implement artificial intelligence (AI) functions; the modem is used to process Wireless communication. It can be understood that, the above-mentioned modem may not be integrated into the processor 131, but is implemented by a single chip.

The memory 132 may include a random access memory (Random Access Memory, RAM), or may include a read-only memory (Read-Only Memory, ROM). Optionally, the memory 132 includes a non-transitory computer-readable storage medium. Memory 132 may be used to store instructions, programs, codes, sets of codes, or sets of instructions. The memory 132 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), Instructions and the like for implementing the following various method embodiments; the storage data area may store data (such as audio data, phone book) and the like created according to the use of the terminal device 13 .

The receiver 133 and the transmitter 134 may be implemented as a communication component, which may be a communication chip.

Optionally, the terminal device 13 may further include a display screen. A display screen is a display component used to display a user interface. Optionally, the display screen also has a touch function, and through the touch function, the user can use any suitable object such as a finger, a touch pen, and the like to perform a touch operation on the display screen.

In addition, those skilled in the art can understand that the structure of the terminal device 13 shown in the above drawings does not constitute a limitation on the terminal device, and the terminal device may include more or less components than those shown in the drawings, or combinations thereof. certain components, or different component arrangements. For example, the terminal device 13 also includes a camera assembly, a radio frequency circuit, an input unit, a sensor (such as an acceleration sensor, an angular velocity sensor, a light sensor, etc.), an audio circuit, a Wireless Fidelity (WiFi) module, a power supply, and a Bluetooth module. and other components, which will not be repeated here.

The TAI list delivered by the MME functional entity to the terminal device includes the TAI of at least one TA, and there may or may not be an intersection between different TAI lists. Illustratively, as shown in FIG. 3 , there is an intersection TA between the TAI list 31 and the TAI list 32 , there is no intersection between the TAI list 32 and the TAI list 33 , and there is no intersection between the TAI list 31 and the TAI list 33 .

Correspondingly, the terminal device determines whether the tracking area update needs to be performed based on the stored TAI list during the moving process. If the incoming TA is in the TAI list, the terminal device does not need to trigger the TAU process; if the incoming TA is outside the TAI list, the terminal device does not need to trigger the TAU process. As shown in FIG. 3 , the terminal device is first located in TA3 and stores the TAI list 31 allocated by the MME functional entity. When moving from TA3 to TA6, since TA6 is in the TAI list 31, the terminal device does not need to trigger the TAU process; when the terminal device further moves from TA6 to TA8, since TA8 does not belong to the TAI list 31, the terminal device needs to trigger the TAU process , and the TAI list 32 is allocated by the MME functional entity.

However, in some cases, when the terminal device is located in the border area of the cells corresponding to at least two TAs, and the at least two TAs belong to different TAI lists, the terminal device will perform cell ping-pong reselection (possibly because the network reselection parameter settings are different. Reasonable cause), and each cell ping-pong reselection will trigger the TAU process.

Schematically, as shown in Figure 3, the terminal device is located between the cells corresponding to TA8 and TA11. If the current serving cell is the cell corresponding to TA8, the terminal device switches to the cell corresponding to TA11 through cell reselection, because TA11 does not belong to TAI. List 32, so the terminal device needs to trigger the TAU process; if the current serving cell is the cell corresponding to TA11, the terminal device switches to the cell corresponding to TA8 through cell reselection. Since TA8 does not belong to the TAI list 33, the terminal device needs to trigger the TAU process.

Obviously, in the above situation, the cell ping-pong reselection will result in frequent updating of the TAU. In the standby state, frequent execution of TAU by the terminal device will cause the modem to fail to sleep and increase power consumption; while for dual-card single-pass terminal equipment, frequent execution of TAU by the secondary card will affect the data transmission performance of the main card.

In order to reduce the impact on the power consumption and transmission performance of the terminal device caused by the frequent triggering of the TAU process in the cell ping-pong reselection process, the embodiment of the present application introduces the concept of a TAC disabled list. With the method provided by the embodiment of the present application, when the TAC changes and the TAU process is triggered, the terminal device identifies the change of the TAC. When it is recognized that it is in the TAC ping-pong state, that is, the TAC changes repeatedly between at least two TACs, the terminal device determines a target TAC that is different from the current TAC from the at least two repeatedly changing TACs, and adds the target TAC to the TAC disable In the list, when the subsequent TAC changes again and the TAC to be switched belongs to the TAC disabled list, the terminal device will not trigger the TAU process, so that the terminal device can stay in a stable TA when the TAC ping-pong changes, avoiding Frequent execution of the TAU process reduces the power consumption of the terminal device and improves the transmission performance of the terminal device. Exemplary embodiments are used for description below.

Please refer to FIG. 4 , which shows a flowchart of a method for updating a tracking area provided by an exemplary embodiment of the present application. This embodiment is described by taking the method executed by the terminal device 13 shown in FIG. 1 as an example, and the process includes the following steps:

Step 401, in response to the TAC changing, trigger the TAU process.

In a possible implementation, when cell reselection occurs and the TAI of the cell after reselection does not belong to the stored TAI list, the terminal device triggers the TAU process to update the locally stored TAI list and complete the cell reselection.

Schematically, as shown in FIG. 3, when the terminal device is reselected from the cell corresponding to TA8 to the cell corresponding to TA11, the TAC changes, and the changed TAC does not belong to the TAI list 32, so the terminal device triggers the TAU process to obtain TAI list 33, and reselection to the cell corresponding to TA11.

Step 402, in response to the terminal device being in a TAC ping-pong state, add a target TAC to the TAC disable list, the TAC ping-pong state refers to a state that repeatedly changes between at least two TACs, and the target TAC is a TAC other than the current TAC in the TAC ping-pong state. .

In a possible implementation, when the TAC changes and the TAU process is triggered, the terminal device records the TAC before and after the change, so as to determine the TAC change according to a series of recorded TACs, and further identify whether it is in the TAC ping-pong state based on the TAC change. .

It should be noted that the terminal device only detects whether it is in the TAC ping-pong state when the TAC changes and the TAU process is triggered. If the TAC changes but the TAU process is not triggered (such as repeated switching between two TAs in the same TAI list), The terminal equipment does not need to identify the TAC ping-pong state.

The TAC ping-pong state is a state that repeatedly changes (switches TACs back and forth) between at least two TACs. When the terminal device is located in the border area of the cell corresponding to the TA, if cell ping-pong reselection occurs, the TAC will change repeatedly. . Schematically, as shown in FIG. 3, when the terminal device is located in the border area of the cells corresponding to TA8 and TA11, and the cell ping-pong reselection occurs, the terminal device is in the TAC ping-pong state, that is, it switches back and forth between the TACs corresponding to TA8 and TA11. .

Certainly, if the terminal device is in the border area of three or more TA corresponding cells, and ping-pong reselection is performed between the three or more cells, the terminal device will also be in the TAC ping-pong state, which is not limited in this embodiment of the present application.

A TAC disable list is introduced in this embodiment of the present application. When it is identified that the TAC ping-pong state is in the TAC ping-pong state based on the TAC change, in order to avoid the subsequent frequent execution of the TAU process, the terminal device determines the target TAC from at least two repeatedly changing TACs, and Add the target TAC to the TAC disable list. Wherein, the target TAC is another TAC except the current TAC among the at least two repeatedly changed TACs.

Schematically, as shown in Figure 3, TA8 corresponds to TAC A, and TA11 corresponds to TAC B. When the terminal device is located in the border area of the cells corresponding to TA8 and TA11, if cell ping-pong reselection occurs, the terminal device recognizes that the TAC will be in the TAC Switch back and forth between A and TAC B. If the current serving cell is the cell corresponding to TA8, the terminal device determines TAC B as the target TAC, and adds TAC B to the TAC disabled list.

It should be noted that, the above-mentioned embodiment only takes adding a single TAC to the TAC disabled list as an example for description. When the terminal device repeatedly changes among three or more TACs, the terminal device adds at least two target TACs to the TAC disabled list. list. For example, when it is identified that there are repeated changes among TAC A, TAC B, and TAC C, and the terminal device is currently camping in the cell corresponding to TAC A, the terminal device adds TAC B and TAC C to the TAC disabled list.

Step 403, in response to the TAC changing again, and the TAC to be switched belongs to the TAC disabled list, prohibit the TAU process triggered by the current TAC change event.

After the target TAC is added to the TAC disabled list, when the subsequent TAC changes again, the terminal device detects whether the TAC to be switched (the TAC has not actually changed at this time) belongs to the TAC disabled list. If yes, it is determined that it is still in the TAC ping-pong state, and then the TAU process triggered by the current TAC change event is prohibited, and the TAC is maintained. Optionally, when the TAC changes during cell reselection, and the TAC to be handed over belongs to the TAC disabled list, the terminal equipment will continue to camp on the current serving cell by disabling the TAU procedure without cell reselection.

It should be noted that the above prohibiting TAU process is only applicable to the current TAC change event. If the subsequent TAC changes again, the terminal device needs to re-detect whether the TAC to be switched belongs to the TAC disabled list, and re-trigger the TAU process if it does not.

Schematically, as shown in Figure 3, the current TAC is TAC A, and TAC B is added to the TAC disabled list. When the TAC changes again due to cell reselection, since the TAC B to be switched belongs to the TAC disabled list, so The terminal device maintains the current TAC A and prohibits the TAU process, thereby staying in the cell corresponding to the TAC A.

Obviously, compared to the related art, when TAC ping-pong changes occur, the TAU is still triggered according to the normal process. In the embodiment of the present application, by identifying the TAC ping-pong state and setting the TAC disable list, the TAC disable list is used to prohibit repeated repetitions between TACs. In the standby state, the power consumption of the terminal device can be reduced; for a dual-card single-standby terminal device, reducing the TAU frequency of the secondary card can improve the transmission performance of the main card.

To sum up, in this embodiment of the present application, the terminal device identifies whether it is currently in the TAC ping-pong state according to the TAU change in the process of triggering the TAU process, and when recognizing that it is in the TAC ping-pong state, it will repeatedly change at least two TACs The target TAC in the TAC is added to the TAC disabled list. When the terminal device needs to switch to the TAC in the TAC disabled list again, the terminal device can prohibit the TAU process to avoid frequent updates of the tracking area in the TAC ping-pong state. When the terminal device is located in at least two tracking In the case of an area boundary position, it helps to reduce the power consumption of the terminal equipment and improve the transmission performance of the terminal equipment.

Optionally, in response to the terminal device being in the TAC ping-pong state, add the target TAC to the TAC disabled list, including:

Obtain the TAC change sequence within a predetermined period of time, and the TAC change sequence is used to characterize the TAC change situation;

In response to the TAC change sequence including repeated TAC, and the number of times of TAC repetition is greater than the number of times threshold, it is determined that the terminal device is in a TAC ping-pong state;

The target TAC is determined from the duplicate TACs and added to the TAC disabled list.

Optionally, in response to the TAC change sequence including repeated TACs, and the number of TAC repetitions is greater than the number of times threshold, it is determined that the terminal device is in the TAC ping-pong state, including:

In response to the repeated TAC appearing for the first time in the TAC change sequence, the first timer is enabled, and the number of TAC repetitions is initialized, and the timer duration of the first timer is a predetermined duration;

In response to the repeating TAC appearing again in the sequence of TAC changes, updating the number of repeats of the TAC;

In response to the number of TAC repetitions being greater than the number threshold within the timer duration of the first timer, it is determined that the mobile device is in the TAC ping-pong state.

Optionally, after adding the target TAC to the TAC disabled list, the method includes:

Set the disable duration for the target TAC;

In response to reaching the disable duration, the target TAC is removed from the TAC disable list.

Optionally, set a disable duration for the target TAC, including:

In response to the terminal device being in the TAC ping-pong state, the TAC ping-pong state round number is updated, and the TAC ping-pong state round number is used to represent the number of occurrences of the TAC ping-pong state, and the TAC ping-pong state round number is not reset when the disabled duration is reached;

Determine the disable duration according to the number of TAC ping-pong status rounds;

A second timer is set for the target TAC according to the disabling duration, and the timer duration of the second timer is the disabling duration.

Optionally, the disable duration is determined according to the number of TAC ping-pong status rounds, including:

The candidate disabling duration is determined according to the number of TAC ping-pong state rounds, and the candidate disabling duration is positively correlated with the number of TAC ping-pong state rounds;

The minimum value of the candidate disabling duration and the upper disabling duration is determined as the disabling duration.

Optionally, after adding the target TAC to the TAC disabled list, the method further includes:

In response to the removal condition being met, the target TAC is removed from the TAC disable list.

Optionally, the removal condition includes at least one of the following:

The TAC has changed, and the TAC to be switched does not belong to the TAC disabled list;

The cell signal strength of the current serving cell is less than the signal strength threshold;

reconnect to the network;

The network standard has changed.

Optionally, in response to meeting the removal conditions, remove the target TAC from the TAC disable list, including:

In response to the removal condition being met, the target TAC is removed from the TAC disable list, and the TAC ping-pong state round number is reset.

In order to prevent the terminal device from being unable to switch to the TA corresponding to the target TAC when the TAC ping-pong state disappears because the target TAC is in the TAC disabled list for a long time, in this embodiment of the present application, when the terminal device adds the target TAC to the TAC disabled list, it is also the target TAC TAC sets a disable duration, so that the target TAC in the TAC disabled list is automatically removed when the disabled duration is reached. Exemplary embodiments are used for description below.

Please refer to FIG. 5 , which shows a flowchart of a method for updating a tracking area provided by another exemplary embodiment of the present application. This embodiment is described by taking the method executed by the terminal device 13 shown in FIG. 1 as an example, and the process includes the following steps:

Step 501, triggering a TAU process in response to a change in the TAC.

For the implementation of this step, reference may be made to the foregoing step 401, and details are not described herein again in this embodiment.

Step 502: Obtain a TAC change sequence within a predetermined time period, where the TAC change sequence is used to characterize the TAC change situation.

In a possible implementation, the terminal device stores and maintains the TAC change sequence. When the TAC changes and triggers the TAU process, the terminal device will add the changed TAC to the TAC change sequence, so that the subsequent identification based on the TAC change sequence can be performed. Changes in TAC during TAU. Optionally, the TAC change sequence further includes TAC change moments corresponding to each TAC.

Correspondingly, when the TAU process is triggered, the terminal device adds the changed TAU to the TAC change sequence, and identifies whether the TAC change sequence contains repeated TACs.

Step 503 , in response to the TAC change sequence including repeated TACs and the TAC repetition times being greater than the times threshold, determine that the terminal device is in a TAC ping-pong state.

In a possible scenario, when the user moves back and forth between cells corresponding to different TAs, at least two TACs will change repeatedly. Correspondingly, the TAC change sequence will also include repeated TACs. However, since such repeated TAC changes are not caused by cell ping-pong reselection, but are caused by normal cell reselection triggered by the normal movement of the terminal device, this situation should not be regarded as a TAC ping-pong change.

In order to be able to distinguish between the repeated changes of the normal TAC and the repeated changes of the TAC caused by the cell ping-pong reselection, in a possible implementation manner, the terminal device identifies whether the TAC change sequence within a predetermined time period includes repeated TACs, and the TACs within the predetermined time period are repeated Whether the count is greater than the count threshold.

If the TAC change sequence contains repeated TACs, and the number of TAC repetitions within a predetermined time period is greater than the number of times threshold, it indicates that the repeated TAC changes are caused by cell ping-pong reselection (because compared to the cell reselection triggered by the normal movement of the terminal equipment, the cell ping-pong The frequency of reselection is higher), and then it is determined that it is currently in TAC ping-pong state.

If the TAC change sequence includes repeated TACs, and the number of TAC repetitions within the predetermined time period is less than the number of times the threshold, it indicates that the repeated TAC changes are not caused by cell ping-pong reselection, and it is determined that the TAC is not currently in the TAC ping-pong state, and subsequent procedures do not need to be performed.

In an illustrative example, the predetermined duration is 30 seconds, and the number of times threshold is 4 times, that is, when the number of TAC occurrences of the first TAC within 30s is greater than 4 times, the terminal device determines that it is in the TAC ping-pong state.

For the manner of determining whether the TAC sequence contains repeated TACs and determining the number of occurrences of the TACs, in a possible implementation manner, as shown in FIG. 6 , this step may include the following steps.

Step 503A, in response to the first occurrence of the repeated TAC in the TAC change sequence, a first timer is enabled, and the number of TAC repetitions is initialized, and the timer duration of the first timer is a predetermined duration.

In a possible implementation manner, after completing the TAU process and adding a TAC to the TAC change sequence, the terminal detects whether the newly added TAC is repeated with the historical TAC in the TAC change sequence. If the newly added TAC overlaps with the historical TAC, it is determined that a repeated TAC occurs (the newly added TAC is a repeated TAC). When it is detected that the repeated TAC appears for the first time in the TAC change sequence, the terminal device starts the first timer and initializes the number of TAC repetitions. The timer duration of the first timer is a predetermined duration, and the initialized TAC repetition number is 1 time .

In order to avoid wrongly determining the occurrence of TAC ping-pong when the newly added TAC is consistent with the distant historical TAC (possibly due to the TAC change caused by terminal movement), in another possible implementation, the TAU process is completed and the TAC is changed. After adding a TAC to the sequence, the terminal device detects whether the newly added TAC overlaps with the historical TAC in the TAC change sequence. If it is less than the interval threshold, if it is less than the interval threshold, start the first timer, if it is greater than the interval threshold, then do not start the first timer. For example, the interval threshold is 20s.

Illustratively, as shown in Figure 7, the terminal device enters the tracking area A at 10:00:00 and triggers the TAU process, thereby adding TAC A to the TAC change sequence 71; the terminal device enters the tracking area B at 10:00:03 , and trigger the TAU process, thereby adding TAC B to the TAC change sequence 71; the terminal enters the tracking area A again at 10:00:06, and triggers the TAU process, thereby adding TAC A to the TAC change sequence 71. Since repeated TACs (ie TAC A) appear in the TAC change sequence 71, and the interval between repeated TACs (ie 6s) is less than the interval threshold, the terminal starts the first timer 72 (timer duration is 30s) and initializes the number of TAC repetitions is 1.

Step 503B, in response to the repeated TAC appearing again in the TAC change sequence, update the number of TAC repetitions.

Within the duration of the first timer, if the TAC changes again and the TAU process is triggered, the terminal device obtains a repeated TAC (different from the last repeated TAC), and updates the number of TAC repetitions. For example, the terminal device adds one to the number of TAC repetitions.

Illustratively, as shown in Figure 7, when the terminal device enters the tracking area A again at 10:00:12 and triggers the TAU, the terminal device adds TAC A to the TAC change sequence 71, because the TAC change sequence 71 already contains TAC A. , so it is determined that TAC A is a repeated TAC, so that the number of times of TAC repetition is updated to 2 (the first timer is 6s at this time).

When the terminal device enters the tracking area B again at 10:00:09 and triggers the TAU, the terminal device adds TAC B to the TAC change sequence 71. Since the TAC change sequence 71 already contains TAC B, it is determined that TAC B is a repeated TAC, thus Update the number of TAC repetitions to 3 (the first timer is now 3s).

Similarly, when the first timer reaches 9s, the terminal device adds TAC B to the TAC change sequence 71, and updates the number of TAC repetitions to 4.

Step 503C, in response to that the number of TAC repetitions within the timer duration of the first timer is greater than the number threshold, it is determined that the mobile device is in the TAC ping-pong state.

In a possible implementation manner, after each update of the number of TAC repetitions, the terminal device detects that the number of TAC repetitions is greater than the number of times threshold, and if it is greater than the number of times, it is determined to be in a TAC ping-pong state; When the timer is longer, it is detected whether the number of TAC repetitions is greater than the number of times threshold, and if it is greater, it is determined to be in the TAC ping-pong state.

Illustratively, as shown in FIG. 7 , when the number of times threshold is set to 3 times, since the number of TAC repetitions reaches 4 times when the timer duration of the first timer reaches 9s, the terminal device determines that it is in the TAC ping-pong state.

In step 504, the target TAC is determined from the repeated TACs, and the target TAC is added to the TAC disabled list.

Further, the terminal device determines the target TAC from the repeated TACs, so as to add the target TAC to the TAC disable list. The repeated TAC may be determined by the terminal device from the TAC change sequence.

In a possible implementation manner, when there are at least two repeated TACs, the terminal device determines the repeated TACs other than the current TAC as the target TAC.

Illustratively, as shown in FIG. 7 , when it is determined that it is in the TAC ping-pong state, since the repeated TAC includes TAC A and TAC B, and the current TAC is TAC B, the terminal determines TAC A as the target TAC and the target TAC Added to TAC disable list 73.

It should be noted that this embodiment only takes two TACs switching back and forth as an example for description. In other possible implementations, when switching back and forth between at least three TACs, the terminal device will switch at least two TACs other than the current TAC. A number of TACs are added to the TAC disabled list, which is not limited in this embodiment.

Step 505 , setting a disable duration for the target TAC.

In a possible implementation manner, the terminal device sets a fixed disabling period for the target TAC, for example, the disabling period is set to 5 minutes.

However, if the TAC ping-pong state persists, frequent TAUs will still occur after removing the target TAC from the TAC ban list. Therefore, in order to further reduce the situation of frequent TAUs caused by cell ping-pong reselection, in another possible implementation manner, the terminal device sets a dynamically increasing disable duration for the target TAC according to the number of occurrences of the TAC ping-pong state.

In a possible implementation manner, as shown in FIG. 6 , this step may include the following steps.

Step 505A, in response to the terminal device being in the TAC ping-pong state, update the number of rounds of the TAC ping-pong state, where the number of rounds of the TAC ping-pong state is used to represent the number of occurrences of the TAC ping-pong state.

In a possible implementation, the terminal device stores and maintains the TAC ping-pong state rounds, and each time the TAC ping-pong state is identified, the terminal device updates the TAC ping-pong state rounds. For example, add one to the number of TAC ping-pong state rounds.

Illustratively, as shown in FIG. 7 , when the number of TAC repetitions reaches 4, the terminal device determines that the TAC ping-pong state occurs, and thus adds one to the number of rounds of the TAC ping-pong state, and obtains that the current number of rounds of the TAC ping-pong state is 1.

Step 505B: Determine the disabling duration according to the number of TAC ping-pong state rounds.

For the method of determining the disabling duration based on the number of TAC ping-pong state rounds, in a possible implementation, the terminal device first determines the candidate disabling duration according to the number of TAC ping-pong state rounds, and then determines the minimum value of the candidate disabling duration and the upper limit of the disabling duration. is the disabling duration, where the candidate disabling duration is positively correlated with the number of TAC ping-pong state rounds, that is, as the number of TAC ping-pong state rounds increases, the longer the target TAC remains in the TAC disabling list, correspondingly, the terminal device prohibits TAU longer.

In an illustrative example, the candidate disable duration is exponentially related to the number of TAC ping-pong state rounds. For example, the candidate disabling duration = 2 ^round , where round is the number of rounds in the TAC ping-pong state.

For example, when the current number of TAC ping-pong state rounds is 1, the candidate disabling duration is 2 minutes; when the current TAC ping-pong state round number is 4, the candidate disabling duration is 16 minutes.

In addition, in order to avoid the infinite increase of the disabled duration and affect the normal TAU of the terminal device, the terminal device is set with an upper limit of the disabled duration. When the candidate disabled duration is less than the upper limit of the disabled duration, the terminal device determines the candidate disabled duration as the disabled duration; when the candidate disabled duration is greater than the disabled duration When disabling the upper limit of the duration, the terminal device determines the upper limit of the disabled duration as the disabled duration.

For example, when the upper limit of the disabling duration is 720min, the disabling duration determined according to the number of rounds of the TAC ping-pong state can be expressed as min(2 ^round , 720).

Of course, the terminal device may also determine the incremental candidate disabling duration in other manners, and the embodiments of the present application only take the foregoing manner as an example for illustrative description, but this does not constitute a limitation.

Step 505C: Set a second timer for the target TAC according to the disabling duration, and the timer duration of the second timer is the disabling duration.

Further, the terminal device sets a second timer for the target TAC according to the determined disabling duration, so as to trigger the removal operation of the target TAC through the second timer.

Illustratively, as shown in FIG. 7 , the terminal device determines that the disable duration of TAC A is 2 minutes.

Step 506, in response to reaching the disable duration, remove the target TAC from the TAC disable list.

Optionally, within the timer duration of the second timer (that is, within the disabled duration), if the TAC changes again, and the TAC to be switched belongs to the TAC disabled list, the terminal device maintains the current TAC; when the second timer reaches the timing When the timer expires, the terminal device will remove the target TAC from the TAC disabled list.

In a possible implementation manner, the number of rounds in the TAC ping-pong state is not reset when the disabled time period is reached, that is, when the TAC ping-pong state is subsequently recognized again, the terminal device continues to accumulate the number of rounds in the current TAC ping-pong state, thereby extending the duration of the TAC. Disable time.

Optionally, after removing the target TAC from the TAC disabled list, the terminal device performs TAC update on the original TAC change sequence, or regenerates and updates a new TAC change sequence, which is not limited in this embodiment.

Step 507, in response to the TAC changing again, and the TAC to be switched belongs to the TAC disabled list, prohibit the TAU process triggered by the current TAC change event.

For the implementation of this step, reference may be made to the foregoing step 403, and details are not described herein again in this embodiment.

In this embodiment, the terminal device communicates to construct a TAC change sequence, and determines whether TAC ping-pong occurs by identifying the repeated TAC in the TAC change sequence, which improves the recognition accuracy of the TAC ping-pong state; in addition, in this embodiment, the terminal device According to the number of rounds in the TAC ping-pong state, the incremental TAC disabling duration is determined, and the TAC removal duration in the TAC disabling list in the TAC ping-pong state is extended, thereby further reducing the TAU frequency in the TAC ping-pong state, reducing the power consumption of the terminal device and improving the transmission performance.

In an illustrative example, the process of updating the tracking area by the terminal device is as shown in FIG. 8 .

Step 801, camp on a 4G cell.

Step 802, cell ping-pong reselection.

Step 803, detecting whether the TAC changes. If the TAC changes, go to step 804; if the TAC does not change, go to step 802.

Step 804, triggering the TAU process.

Step 805 , check whether the number of times (count) of repeated TAC is 0. If it is 0, go to step 806, if not, go to step 807.

Step 806, start the timer T1, and the duration of the timer T1 is 30s.

Step 807: Add one to the number of times of repeating the TAC.

Step 808: Detect whether the number of times of repeating the TAC reaches 4 within 30s. If so, go to step 809, if not, go to step 802.

Step 809: Add one to the number of rounds in the TAC ping-pong state.

Step 810, adding the repeated TAC to the TAC disable list, and setting a timer T2 for the repeated TAC, and the timer duration of the timer T2 is min (2 ^round , 720).

In the above embodiment, the removal process of the TAC in the TAC disabled list is described by taking the disabling duration as the removal trigger condition as an example. However, in some special cases, the terminal device needs to remove the TAC in the TAC disabling list in time to prevent the TAC disabling from affecting the normal update of the tracking area of the terminal device.

In a possible implementation, when the removal condition is satisfied, the terminal device removes the target TAC from the TAC disabled list.

The removal conditions include at least one of the following:

1. The TAC has changed, and the TAC to be switched does not belong to the TAC disabled list.

When the terminal equipment moves, and the cell reselection is caused by the movement, which triggers the TAU process, in order to ensure the normal execution of the cell reselection, the terminal equipment needs to remove the target TAC from the TAC list. Optionally, when the TAC changes, the terminal device detects whether the TAC to be switched belongs to the TAC disabled list, and if not, triggers the removal process of the target TAC.

In other possible implementation manners, the terminal device may further determine whether the TAC change is caused by the movement of the terminal device according to geographic location information or sensor data, which is not limited in this embodiment.

2. The cell signal strength of the current serving cell is less than the signal strength threshold.

During the period when the target TAC is disabled, if the signal strength of the cell in the current serving cell becomes poor, continuing to camp on the current serving cell may result in a network drop. Therefore, in a possible implementation, the terminal device is camped on the current serving cell. During the cell process, continuously measure the cell signal strength, such as Reference Signal Receiving Power (RSRP), and when the cell signal strength of the current serving cell is less than the signal strength threshold, remove the target TAC from the TAC disabled list. It enables the terminal equipment to camp on the cell corresponding to the target TAC through cell reselection, so as to avoid the situation of dropping the network. For example, when the RSRP of the current serving cell is less than -115dbm, the terminal device removes the target TAC from the TAC disable list.

3. Reconnect to the network.

Optionally, the terminal device can be re-connected to the network by switching the machine, switching the airplane mode, or plugging and unplugging the SIM card (all need to be re-attached to the network), that is, when it is detected that the terminal device is turned on and off, the airplane mode is switched, or the card is inserted and removed. , the end device removes the target TAC from the TAC disable list.

4. The network system has changed.

Because the terminal device can support multiple network standards at the same time, and when TAC ping-pong occurs in the current network standard, there may not be TAC ping-pong in other network standards. Therefore, when the network standard changes, the terminal device also targets the target TAC removed from TAC ban list.

For example, when the TAC ping-pong state is identified under the 4G network standard and the target TAC is added to the TAC disabled list, if the terminal device switches from the 4G network standard to the 3G network standard, the terminal device will remove the TAC in the TAC disabled list.

Optionally, when the removal conditions are met, and the target TAC is removed from the TAC disabled list, the terminal device resets the number of TAC ping-pong state rounds, so as to avoid the TAC that is subsequently added to the TAC disabled list without resetting the number of TAC ping-pong state rounds. Disabled for too long.

In this embodiment, the terminal device sets removal conditions, and when the removal conditions are met, removes the TACs in the TAC disable list in time, and under the premise of alleviating the TAC ping-pong state, avoids the normal use of the terminal equipment caused by the TAC disablement. influence.

Please refer to FIG. 9 , which shows a structural block diagram of an apparatus for updating a tracking area provided by an embodiment of the present application. The apparatus can be implemented by software, hardware or a combination of the two to become all or a part of the terminal device 13 in FIG. 1 . The device includes:

An update module 901 is used to trigger a TAU process in response to a change in the TAC;

The adding module 902 is configured to add a target TAC to the TAC disable list in response to the terminal device being in a TAC ping-pong state, where the TAC ping-pong state refers to a state that repeatedly changes between at least two TACs, and the target TAC is a TAC TAC other than the current TAC in ping-pong state;

The maintaining module 903 is configured to prohibit the TAU process triggered by the current TAC change event in response to the TAC changing again and the TAC to be switched belongs to the TAC disabled list.

Optionally, add module 902, including:

a sequence acquisition unit, configured to acquire a TAC change sequence within a predetermined time period, the TAC change sequence being used to characterize the TAC change situation;

a state determination unit, configured to determine that the terminal device is in the TAC ping-pong state in response to the TAC change sequence including repeated TACs, and the number of times of TAC repetitions is greater than a threshold of times;

An adding unit is configured to determine the target TAC from the duplicate TAC, and add the target TAC to the TAC disable list.

Optional, state determination unit for:

In response to the repeated TAC appearing for the first time in the TAC change sequence, a first timer is enabled, and the number of times of repetition of the TAC is initialized, and the timer duration of the first timer is the predetermined duration;

In response to repeating the TAC appearing again in the sequence of TAC changes, updating the number of TAC repetitions;

In response to the TAC repetition times being greater than the times threshold within the timer duration of the first timer, it is determined to be in the TAC ping-pong state.

Optionally, the device includes:

a duration setting module for setting a disabled duration for the target TAC;

A first removing module, configured to remove the target TAC from the TAC disable list in response to reaching the disable duration.

Optionally, the duration setting module includes:

a round number updating unit, configured to update the number of rounds of the TAC ping-pong state in response to the terminal device being in the TAC ping-pong state, the number of rounds of the TAC ping-pong state being used to represent the number of occurrences of the TAC ping-pong state, and the The number of TAC ping-pong state rounds is not reset when the disabled duration is reached;

a duration determining unit, configured to determine the disabling duration according to the number of rounds of the TAC ping-pong state;

A duration setting unit, configured to set a second timer for the target TAC according to the disable duration, where the timer duration of the second timer is the disable duration.

Optional, duration determination unit, used to:

Determine the candidate disabling duration according to the number of TAC ping-pong state rounds, and the candidate disabling duration is positively correlated with the number of TAC ping-pong state rounds;

The minimum value of the candidate disabling duration and the upper limit of disabling duration is determined as the disabling duration.

Optionally, the device further includes:

A second removal module, configured to remove the target TAC from the TAC disable list in response to a removal condition being satisfied.

Optionally, the removal conditions include at least one of the following:

The TAC changes, and the TAC to be switched does not belong to the TAC disabled list;

The cell signal strength of the current serving cell is less than the signal strength threshold;

reconnect to the network;

The network standard has changed.

Optionally, the second removal module is used for:

In response to satisfying the removal condition, the target TAC is removed from the TAC disable list, and the TAC ping-pong state round number is reset.

To sum up, in this embodiment of the present application, the terminal device identifies whether it is currently in the TAC ping-pong state according to the TAU change in the process of triggering the TAU process, and when recognizing that it is in the TAC ping-pong state, it will repeatedly change at least two TACs The target TAC in the TAC is added to the TAC disabled list. When the terminal device needs to switch to the TAC in the TAC disabled list again, the terminal device can prohibit the TAU process and keep the current TAC to avoid frequent updates of the tracking area in the TAC ping-pong state. In the case of at least two tracking area border positions, it is helpful to reduce the power consumption of the terminal device and improve the transmission performance of the terminal device.

In this embodiment, the terminal device communicates to construct a TAC change sequence, and determines whether TAC ping-pong occurs by identifying the repeated TAC in the TAC change sequence, which improves the recognition accuracy of the TAC ping-pong state; in addition, in this embodiment, the terminal device According to the number of rounds in the TAC ping-pong state, the incremental TAC disabling duration is determined, and the TAC removal duration in the TAC disabling list in the TAC ping-pong state is extended, thereby further reducing the TAU frequency in the TAC ping-pong state, reducing the power consumption of the terminal device and improving the transmission performance.

In this embodiment, the terminal device sets removal conditions, and when the removal conditions are met, removes the TACs in the TAC disable list in time, and under the premise of alleviating the TAC ping-pong state, avoids the normal use of the terminal equipment caused by the TAC disablement. influence.

Embodiments of the present application further provide a computer-readable medium, where at least one instruction is stored in the computer-readable medium, and the at least one instruction is loaded and executed by a processor to implement the tracking area update method according to the above embodiments .

Embodiments of the present application provide a computer program product or computer program, where the computer program product or computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the tracking area update method provided by the above aspects.

Those skilled in the art should realize that, in one or more of the above examples, the functions described in the embodiments of the present application may be implemented by hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

The above descriptions are only optional embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims (20)

A method for updating a tracking area, applied to a terminal device, the method comprising: In response to the change of the tracking area code TAC, the tracking area update TAU process is triggered; In response to the terminal device being in a TAC ping-pong state, a target TAC is added to the TAC disabled list, the TAC ping-pong state refers to a state that repeatedly changes between at least two TACs, and the target TAC is the TAC ping-pong state except the current TAC other than TAC; In response to the TAC changing again, and the TAC to be switched belongs to the TAC disabled list, the TAU process triggered by the current TAC change event is disabled. The method according to claim 1, wherein, in response to the terminal device being in a TAC ping-pong state, adding a target TAC to a TAC disable list comprises: Acquire a TAC change sequence within a predetermined period of time, and the TAC change sequence is used to characterize the TAC change situation; In response to the TAC change sequence including repeated TAC, and the number of TAC repetitions is greater than the number of times threshold, determine that the terminal device is in the TAC ping-pong state; The target TAC is determined from the duplicate TACs, and the target TAC is added to the TAC disable list. The method according to claim 2, wherein the determining that the terminal device is in the TAC ping-pong state in response to the TAC change sequence including repeated TACs and the number of times of TAC repetitions is greater than a threshold value, comprises: In response to the repeated TAC appearing for the first time in the TAC change sequence, a first timer is enabled, and the number of repetitions of the TAC is initialized, and the timer duration of the first timer is the predetermined duration; in response to the repeating TAC appearing again in the TAC change sequence, updating the number of times of repeating the TAC; It is determined that the mobile device is in the TAC ping-pong state in response to the TAC repetition number being greater than the number threshold within the timer duration of the first timer. The method according to any one of claims 1 to 3, wherein after adding the target TAC to the TAC disable list, the method comprises: set a disable duration for the target TAC; In response to reaching the disable period, the target TAC is removed from the TAC disable list. The method according to claim 4, wherein the setting a disable duration for the target TAC comprises: In response to the terminal device being in the TAC ping-pong state, the number of TAC ping-pong state rounds is updated, the TAC ping-pong state round number is used to represent the number of occurrences of the TAC ping-pong state, and the TAC ping-pong state round number reaches the specified number of times. It will not be reset when the above-mentioned disable time is exceeded; determining the disabling duration according to the number of rounds of the TAC ping-pong state; A second timer is set for the target TAC according to the disabling duration, and the timer duration of the second timer is the disabling duration. The method according to claim 5, wherein the determining the disabling duration according to the number of the TAC ping-pong state rounds comprises: Determine the candidate disabling duration according to the number of TAC ping-pong state rounds, and the candidate disabling duration is positively correlated with the number of TAC ping-pong state rounds; The minimum value of the candidate disabling duration and the upper limit of disabling duration is determined as the disabling duration. The method according to any one of claims 1 to 3, wherein after adding the target TAC to the TAC disable list, the method further comprises: The target TAC is removed from the TAC disable list in response to a removal condition being met. The method of claim 7, wherein the removal conditions include at least one of the following: The TAC has changed, and the TAC to be switched does not belong to the TAC disabled list; The cell signal strength of the current serving cell is less than the signal strength threshold; reconnect to the network; The network standard has changed. 9. The method of claim 8, wherein, in response to satisfying a removal condition, removing the target TAC from the TAC disable list comprises: In response to satisfying the removal condition, the target TAC is removed from the TAC disable list, and the TAC ping-pong state round number is reset. An apparatus for updating a tracking area, applied to terminal equipment, the apparatus comprising: The update module is used to trigger the tracking area update TAU process in response to the change of the tracking area code TAC; The adding module is configured to add a target TAC to the TAC disable list in response to the terminal device being in a TAC ping-pong state, where the TAC ping-pong state refers to a state that repeatedly changes between at least two TACs, and the target TAC is TAC ping-pong A TAC other than the current TAC in the state; The holding module is configured to prohibit the TAU process triggered by the current TAC change event in response to the TAC changing again and the TAC to be switched belongs to the TAC disabled list. The apparatus of claim 10, wherein the adding module comprises: a sequence acquisition unit, configured to acquire a TAC change sequence within a predetermined time period, the TAC change sequence being used to characterize the TAC change situation; a state determination unit, configured to determine that the terminal device is in the TAC ping-pong state in response to the TAC change sequence including repeated TACs, and the number of times of TAC repetitions is greater than a threshold of times; An adding unit is configured to determine the target TAC from the duplicate TAC, and add the target TAC to the TAC disable list. The apparatus according to claim 11, wherein the state determination unit is used for: In response to the repeated TAC appearing for the first time in the TAC change sequence, a first timer is enabled, and the number of repetitions of the TAC is initialized, and the timer duration of the first timer is the predetermined duration; in response to the repeating TAC appearing again in the TAC change sequence, updating the number of times of repeating the TAC; It is determined that the mobile device is in the TAC ping-pong state in response to the TAC repetition number being greater than the number threshold within the timer duration of the first timer. The apparatus of any one of claims 10 to 12, wherein the apparatus further comprises: a duration setting module for setting a disabled duration for the target TAC; A first removing module, configured to remove the target TAC from the TAC disable list in response to reaching the disable duration. The device according to claim 13, wherein the duration setting module comprises: a round number updating unit, configured to update the number of rounds of the TAC ping-pong state in response to the terminal device being in the TAC ping-pong state, the number of rounds of the TAC ping-pong state is used to represent the number of occurrences of the TAC ping-pong state, and the TAC ping-pong state The number of ping-pong state rounds is not reset when the disabled duration is reached; a duration determining unit, configured to determine the disabling duration according to the number of rounds of the TAC ping-pong state; A duration setting unit, configured to set a second timer for the target TAC according to the disable duration, where the timer duration of the second timer is the disable duration. The apparatus according to claim 14, wherein the duration determining unit is used for: The candidate disabling duration is determined according to the number of TAC ping-pong state rounds, and the candidate disabling duration is positively correlated with the number of TAC ping-pong state rounds; The minimum value of the candidate disabling duration and the upper limit of disabling duration is determined as the disabling duration. The apparatus of any one of claims 10 to 12, wherein the apparatus further comprises: A second removal module, configured to remove the target TAC from the TAC disable list in response to a removal condition being satisfied. The apparatus of claim 16, wherein the removal conditions include at least one of the following: The TAC has changed, and the TAC to be switched does not belong to the TAC disabled list; The cell signal strength of the current serving cell is less than the signal strength threshold; reconnect to the network; The network system has changed. The apparatus of claim 17, wherein the second removal module is configured to: In response to satisfying the removal condition, the target TAC is removed from the TAC disable list, and the TAC ping-pong state round number is reset. A terminal device, characterized in that the terminal device includes a processor and a memory; the memory stores at least one instruction, and the at least one instruction is used to be executed by the processor to implement any one of claims 1 to 9. A method for updating the tracking area. A computer-readable storage medium, characterized in that the storage medium stores at least one instruction, and the at least one instruction is used to be executed by a processor to implement the tracking area update according to any one of claims 1 to 9 method.

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