WO2024093521A1

WO2024093521A1 - Handover exception processing method, device, and storage medium

Info

Publication number: WO2024093521A1
Application number: PCT/CN2023/117643
Authority: WO
Inventors: 夏月明
Original assignee: 荣耀终端有限公司
Priority date: 2022-11-06
Filing date: 2023-09-08
Publication date: 2024-05-10
Also published as: CN115426667A; CN115426667B

Abstract

Provided in the present application are a handover exception processing method, a device, and a storage medium. The method comprises: if a terminal device still has not received a handover command made by a source base station for a first measurement report after sending to the source base station the first measurement report for the (M-1)-th time, after the M-th time, namely the last one measurement report sending opportunity configured in a measurement configuration issued by the source base station, starting a first timer having a first timing duration; and, if the terminal device still has not received the handover command issued by the source base station at the end of the first timing duration, re-sending the first measurement report once. In this way, even if the number of measurement report sending times configured in the measurement configuration is reached, the terminal device can still be triggered to send to the source base station the first measurement report until the handover command made by the source base station for the first measurement report is received, thus the terminal device is ensured to always receive the handover command issued by the source base station, and hand over to an available network in time according to the handover command, thereby ensuring the quality of service.

Description

Method, device and storage medium for handling abnormal switching

This application claims priority to the Chinese patent application filed with the China Patent Office on November 6, 2022, with application number 202211381159.3 and invention name “Switching Abnormal Processing Method, Device and Storage Medium”, all contents of which are incorporated by reference in this application.

Technical Field

The present application relates to the field of communication technology, and in particular to a method, device and storage medium for processing switching anomalies.

Background technique

Handover is an important part of mobility management in Long Term Evolution (LTE) and New Radio (NR) systems, and is an important part of ensuring service quality. Under normal circumstances, when a terminal resides in a cell managed by a source base station (the currently connected base station), the source base station will send a measurement configuration to the terminal, and the terminal will perform measurements according to the measurement configuration, and report the measurement report (MeasurementReport, MR) obtained by the measurement to the source base station. The source base station will send a handover command to the terminal based on the measurement report, so that the terminal completes the handover according to the handover command, that is, switches from the source base station to the target base station.

However, in actual operation, the measurement report reported by the terminal may be lost and fail to reach the source base station, or the source base station may not process it after reaching the source base station. In this case, the source base station will not send a switching command to the terminal, and the terminal cannot switch to the target base station in time, resulting in switching abnormalities.

Summary of the invention

In order to solve the above technical problems, the present application provides a method, device and storage medium for handling switching anomalies, aiming to enable the terminal to always receive the switching command issued by the source base station, so that the terminal can switch to an available network in time according to the switching command to ensure service quality.

In the first aspect, the present application provides a method for handling handover anomalies. The method is applied to a terminal device, including: receiving a measurement configuration sent by a source base station, the number of measurement report transmissions configured in the measurement configuration is M, and M is greater than 0; in the source cell corresponding to the source base station, the searched first base station is measured according to the measurement configuration, and the first measurement report corresponding to the first base station is obtained; after sending the first measurement report to the source base station for the M-1th time, when the handover command made by the source base station for the first measurement report is still not received, when the measurement report reporting interval configured in the measurement configuration is met, the first measurement report is sent to the source base station for the Mth time, and the first timer of the first timing duration is started; when the handover command made by the source base station according to the first measurement report is not received within the first timing duration, after the first timing duration ends, when the measurement report reporting interval configured in the measurement configuration is met, the first measurement report is re-sent to the source base station; in response to the handover command made by the source base station according to the resent first measurement report, the handover is performed.

Therefore, when the terminal device still has not received the switching command made by the source base station for the first measurement report after sending the first measurement report to the source base station for the M-1th time, after the Mth time, which is the last measurement report sending opportunity configured in the measurement configuration sent by the source base station, the first timer with a first timing duration is started. If the switching command sent by the source base station is still not received at the end of the first timing duration, the first measurement report is resent. In this way, even if the number of measurement report sending times configured in the measurement configuration is reached, the terminal device can still be triggered to send the first measurement report to the source base station until the switching command made by the source base station for the first measurement report is received. This ensures that the terminal device can always receive the switching command sent by the source base station, and then switch to the available network in time according to the switching command to ensure the service quality.

According to the first aspect, before sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, the method also includes: when the terminal device is in a moving state, obtaining the current moving speed and the distance between the current position and the boundary of the source cell; based on the moving speed and the distance, estimating the moving time for the terminal device to move from the current position to the boundary of the source cell according to the moving speed; when the moving time is greater than the first timing duration, executing the step of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration; otherwise, only sending the first measurement report to the source base station for the Mth time.

It is understandable that if the moving time to the source cell boundary is not greater than the first timing duration, then before the first measurement report is resent after the first timing duration ends, the terminal device can search for other base stations, such as the second base station, at the source cell boundary, and then send the measurement report of the second base station. In this case, it is meaningless to resend the first measurement report. Therefore, by setting the first timer to start only when the moving time is greater than the first timing duration, the process of resending the first measurement report is triggered, so that the abnormal switching processing method provided in the present application can be better applied to actual application scenarios and reduce unnecessary resource occupation.

According to the first aspect, or any implementation method of the first aspect above, before sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, the method also includes: determining the carrying capacity of the channel between the terminal device and the source base station according to the current reference signal received power RSRP of the source base station, and/or the reference signal received instruction RSRQ, and/or the signal-to-noise ratio; when the carrying capacity of the channel meets the retransmission condition, executing the step of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration; when the carrying capacity of the channel does not meet the retransmission condition, only sending the first measurement report to the source base station for the Mth time.

Therefore, by judging the carrying capacity of the channel between the terminal device and the source base station, the first timer is started only when the carrying capacity meets the repetition conditions, such as there are more resources and the processing pressure of resending the first measurement report on the source base station is relatively small, triggering the process of resending the first measurement report, so that the abnormal switching processing method provided in the present application can be better applied to actual application scenarios, reducing the pressure on the source base station, so that after resending the first measurement report, the source base station can process the first measurement report while being able to handle other services normally.

According to the first aspect, or any implementation method of the first aspect above, the terminal device accessing the source base station includes a first terminal device and a second terminal device; when the carrying capacity of the channel only supports one terminal device to start the timer and resend the first measurement report, before sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, the method also includes: when the priority of the first terminal device is higher than the priority of the second terminal device, the first terminal device executes the step of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, and the second terminal device only sends the first measurement report to the source base station for the Mth time; when the priority of the second terminal device is higher than the priority of the first terminal device, the second terminal device executes the step of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, and the first terminal device only sends the first measurement report to the source base station for the Mth time.

Thus, when the carrying capacity is insufficient to carry all currently connected terminal devices, triggering the retransmission of the first measurement report, the terminal device with a high priority is selected to start the first timing after sending the last first measurement report. The first timer of the duration is set, and when no switching command is received from the source base station for the first measurement report within the first timing duration, the first measurement report can be resent, while the process is not started for low priority devices. This not only reduces the processing pressure of the source base station, but also ensures that the terminal devices with high priority can execute the switching in time, thereby ensuring that the services on the terminal devices with high priority can be executed normally.

According to the first aspect, or any implementation manner of the first aspect above, the method also includes: when the priority of the first terminal device is equal to the priority of the second terminal device, determining the first priority of the service currently processed by the first terminal device and the second priority of the service currently processed by the second terminal device; when the first priority is higher than the second highest priority, the first terminal device executes the step of sending the first measurement report to the source base station for the Mth time, and starting the first timer of the first timing duration, and the second terminal device only sends the first measurement report to the source base station for the Mth time; when the second priority is higher than the first highest priority, the second terminal device executes the step of sending the first measurement report to the source base station for the Mth time, and starting the first timer of the first timing duration, and the first terminal device only sends the first measurement report to the source base station for the Mth time.

Therefore, by considering the priority of services executed on terminal devices with the same priority, a suitable terminal device is selected according to the priority of the executed service to start the retransmission process, which better fits the actual usage scenario.

According to the first aspect, or any implementation method of the first aspect above, after re-sending the first measurement report to the source base station, the method also includes: starting a second timer of a second timing duration; when no switching command is received from the source base station based on the re-sent first measurement report within the second timing duration, after the second timing duration ends, when the measurement report reporting interval configured in the measurement configuration is met, re-sending the first measurement report to the source base station; when the switching command is received from the source base station for the re-sent first measurement report at the end of the second timing duration, executing the switching; when the switching command is received from the source base station for the re-sent first measurement report within the second timing duration, turning off the second timer and executing the switching.

Therefore, after the first timing period ends and the first measurement report is resent, the second timer of the second timing period is started again, that is, when the switching command made by the source base station for the first measurement report is not received, the above retransmission process is executed in a loop until the switching command made by the source base station for the first measurement report is received, thereby ensuring that the terminal device can always receive the switching command issued by the source base station, and then switch to the available network in time according to the switching command to ensure service quality.

According to the first aspect, or any implementation of the first aspect above, the first timing duration and the second timing duration are both greater than the duration for the source base station to process the first measurement report and issue a switching command.

In this way, it can be ensured that the switching command made by the source base station when processing the first measurement report normally can be received by the terminal device, avoiding the terminal device triggering the operation of resending the first measurement report when the switching command can arrive normally, thereby reducing unnecessary resource occupation.

According to the first aspect, or any implementation of the first aspect above, the method also includes: when a switching command made by the source base station in response to the first measurement report sent for the Mth time is received within the first timing period, turning off the first timer and performing the switching.

Thus, the terminal device will not resend the first measurement to the source base station at the end of the first timing period. Reported actions.

According to the first aspect, or any implementation method of the first aspect above, performing switching includes: sending a switching access request to the first base station through the wireless resources indicated in the switching command; in response to the switching access response made by the first base station to the switching access request, sending a switching completion message to the first base station to complete the switching.

Regarding the terminal device responding to the switching command issued by the source base station, the process of executing the switching is as follows: step S109 to step S111, or step S211 to step S213, or step S311 to step S313, or step S412 to step S414. The specific implementation details are described below and will not be repeated here.

According to the first aspect, or any implementation of the first aspect above, M∈{1, 2, 4, 8, 16, 32, 64}.

It can be understood that the above 1, 2, 4, 8, 16, 32, 64 are respectively r1, r2, r4, r8, r16, r32, r64 in the value of reportAmount below. That is, the value of M (reportAmount) is not Infinity (infinite times).

In a second aspect, the present application provides a terminal device. The terminal device includes: a memory and a processor, the memory and the processor are coupled; the memory stores program instructions, and when the program instructions are executed by the processor, the terminal device executes instructions of the method in the first aspect or any possible implementation of the first aspect.

The second aspect and any implementation of the second aspect correspond to the first aspect and any implementation of the first aspect respectively. The technical effects corresponding to the second aspect and any implementation of the second aspect can refer to the technical effects corresponding to the first aspect and any implementation of the first aspect, which will not be repeated here.

In a third aspect, the present application provides a computer-readable medium for storing a computer program, wherein the computer program includes instructions for executing the method in the first aspect or any possible implementation of the first aspect.

The third aspect and any implementation of the third aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the third aspect and any implementation of the third aspect can refer to the technical effects corresponding to the first aspect and any implementation of the first aspect, which will not be repeated here.

In a fourth aspect, the present application provides a computer program, comprising instructions for executing the method in the first aspect or any possible implementation of the first aspect.

The fourth aspect and any implementation of the fourth aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the fourth aspect and any implementation of the fourth aspect can refer to the technical effects corresponding to the above-mentioned first aspect and any implementation of the first aspect, which will not be repeated here.

In a fifth aspect, the present application provides a chip, the chip comprising a processing circuit and a transceiver pin. The transceiver pin and the processing circuit communicate with each other through an internal connection path, and the processing circuit executes the method in the first aspect or any possible implementation of the first aspect to control the receiving pin to receive a signal to control the transmitting pin to receive a signal. foot sends a signal.

The fifth aspect and any implementation of the fifth aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the fifth aspect and any implementation of the fifth aspect can refer to the technical effects corresponding to the first aspect and any implementation of the first aspect, which will not be repeated here.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of an exemplary scene;

FIG2 is a timing diagram showing an exemplary normal switching;

FIG3 is a partial pseudo code diagram of a measurement configuration sent by a source base station to a terminal in an exemplary handover scenario;

FIG4 is a timing diagram showing an exemplary abnormal switching;

FIG5 is a schematic diagram showing an exemplary effect of abnormal switching on a service rate;

FIG6 is a schematic diagram showing a hardware structure of a terminal device;

FIG7 is a schematic diagram of a protocol stack for exemplarily implementing the abnormal switching processing method provided in an embodiment of the present application;

FIG8 is a timing diagram exemplarily illustrating a method for processing abnormal switching provided in an embodiment of the present application;

FIG9 is a schematic diagram showing, by way of example, changes in a service rate after an abnormal handover occurs and after processing is performed based on the abnormal handover processing method provided in an embodiment of the present application;

FIG10 is another timing diagram exemplarily showing the method for processing abnormal switching provided in an embodiment of the present application;

FIG11 is a flowchart exemplarily illustrating a method for processing abnormal switching provided in an embodiment of the present application;

FIG. 12 is a schematic diagram showing an exemplary process for determining whether to initiate abnormal switching provided in an embodiment of the present application.

Detailed ways

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

The term "and/or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

The terms "first" and "second" in the description and claims of the embodiments of the present application are used to distinguish different objects rather than to describe a specific order of objects. For example, a first target object and a second target object are used to distinguish different target objects rather than to describe a specific order of target objects.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more than two. For example, multiple processing units refer to two or more processing units; multiple systems refer to two or more systems.

Before describing the technical solution of the embodiment of the present application, the wireless communication system corresponding to the scenario targeted by the abnormal switching processing method provided in the embodiment of the present application and the switching scenario implemented based on the wireless communication system are first described in conjunction with the accompanying drawings.

Exemplarily, generally, a wireless communication system may include a terminal (or also called a mobile station), a base station and a core network.

Among them, the core network is responsible for non-access layer matters (such as mobility management, etc.); the network composed of base stations is called the Radio Access Network (RAN), which is responsible for access layer matters (such as wireless resource management, etc.), and the uplink/downlink wireless resources are scheduled by the base station in a shared channel manner; the terminal refers to a device that can communicate with the network, such as mobile phones, personal digital assistants, laptops, smart wearable devices, smart home devices, etc. Each terminal can only be connected to one base station in the network in the uplink direction.

In addition, it should be noted that, in actual applications, base stations can be logically or physically connected as needed; each base station can be connected to one or more core network nodes.

For ease of understanding, taking the wireless communication system including terminal A, a user-side device, and base stations A, B and C, three network-side devices, and base stations A, B and C are all connected to the same core network, and the base station (source base station) currently connected to terminal A is base station A, the switching scenario is specifically described.

Referring to FIG. 1 , illustratively, the coverage of base station A is cell A, the coverage of base station B is cell B, and the coverage of base station C is cell C. After base station A sends measurement configuration (also referred to as measurement control) to terminal A, when the user carries terminal A and resides in area AB, terminal A searches for a new base station (base station B), and then performs measurement according to the measurement configuration sent by base station A to obtain a measurement report of relevant information about base station B, and sends the measurement report to base station A, so that base station A decides whether to notify terminal A to perform a switching operation from base station A to base station B according to the measurement report.

Based on the above implementation logic, in combination with FIG. 2 , the processing logic of normal switching of terminal A, base station A (source base station), and base station B (target base station) is specifically described.

S101, base station A sends a measurement configuration with a measurement report sending number of 1 to terminal A.

Specifically, the measurement configuration (measConfig) is sent to terminal A in the form of a measurement identifier (measId). Each measId includes two elements: a measurement object (measObjectId) and a report configuration (reportConfigId). As shown in Figure 3, each measId can be placed in the measurement identifier add modification list (measIdToAddModList). The configuration information about measObjectId is placed in the measurement object add modification list (measObjectIdToAddModList), and the configuration information about reportConfigId is placed in the report configuration add modification list (reportConfigIdToAddModList).

In addition, it should be noted that the measurement report sending times reportAmount corresponding to each measId configured in the measurement configuration is specifically in reportConfigIdToAddModList corresponding to the reportConfigId in the measId.

Continuing to refer to FIG. 3 , illustratively, taking measId as 2 (measId 2) as an example, when base station A configures the number of measurement report transmissions corresponding to measId 2 to 1, reportAmount in reportConfigId 2 will be configured to "r1".

It should be noted that in actual operations, based on the Radio Resource Control (RRC) protocol, the value of reportAmount can be r1 (1 time), r2 (2 times), r4 (4 times), r8 (8 times), r16 (16 times), r32 (32 times), r64 (64 times), and Infinity (infinite times).

It is understandable that when the value of reportAmount is r1, for the measurement report corresponding to the same base station, terminal A only sends the measurement report to base station A once. Even if base station A does not receive the measurement report, or receives the measurement report but does not process it, terminal A will not send the measurement report to base station A again.

Accordingly, when the value of reportAmount is r2, for the measurement report corresponding to the same base station, after terminal A sends the measurement report to base station A once, if it does not receive a response from base station A to the measurement report within the set time, it will send the measurement report to base station A again. After sending the measurement report to base station A for the second time, even if base station A does not receive the measurement report, or receives the measurement report but does not process it, terminal A will not send the measurement report to base station A again. When the value of reportAmount is r4, or r8, or r16, or r32, or r64, the sending logic of the measurement report corresponding to the same base station is similar to that when the value of reportAmount is r2, and will not be repeated here.

In addition, for the scenario where the reportAmount value is Infinity, specifically, after terminal A sends a measurement report corresponding to the same base station (such as base station B) to base station A, if base station A has not sent the processing result of the measurement report to terminal A, such as sending a switching command, then when terminal A is resident in a cell that can generate the measurement report, terminal A will continue to send the measurement report to base station A until it receives the processing result of the measurement report made by base station A, or leaves the cell, or searches for other base stations, such as base station C, and generates a measurement report for base station C, then it stops sending the measurement report corresponding to base station B to base station A, and instead sends the measurement report corresponding to base station C to base station A according to the above-mentioned sending logic.

It should be understood that the above description is merely an example listed for a better understanding of the technical solution of this embodiment, and is not intended to be the sole limitation to this embodiment.

From the above description, it can be seen that the abnormal switching targeted by the technical solution provided by this application is specifically a scenario in which, when the value of reportAmount is not Infinity, after terminal A sends reportAmount measurement reports to base station A, it still does not receive the processing result made by base station A for the measurement report. For the sake of convenience, take the value of reportAmount as r1 as an example.

S102: Terminal A performs measurement according to the measurement configuration and obtains a measurement report.

Continuing to refer to Figure 3, exemplarily, in the reportConfigIdToAddModList of the measurement configuration, measurement information can be configured for each reportConfigId. For example, when the information corresponding to reportConfig is "reportConfigNR", it indicates that the report configuration information is the report configuration information of 5GNR, when the information corresponding to reportTyped is "eventTriggered", it indicates that the measurement report is of event type, when the information corresponding to eventId is "eventA3", it indicates that the measurement is for the A3 event in the RRC protocol, when the information corresponding to rsType is "ssb", it indicates that the measurement report is of synchronization signal (Synchronization Signal and PBCH block, ssb) type, and when the information corresponding to reportInteval is "ms1024", it indicates that the measurement report interval is 1024ms.

It should be understood that Figure 3 is only an example for better understanding the technical solution of this embodiment, and is not the only limitation to this embodiment. In practical applications, the measurement configuration may also include other information, which may be specifically set based on the measurement configuration description given by the RRC protocol, and will not be repeated here.

For example, if terminal A is located in area AB shown in FIG1 when receiving a measurement configuration in which reportAmount is set to r1 from base station A, terminal A can search for base station B that can be accessed. After the measurement configuration performs corresponding measurements on base station B, a measurement report including relevant information of base station B can be obtained.

Exemplarily, in some implementations, relevant information of base station B includes, for example, reference signal receiving power (Reference Signal Receiving Power, RSRP), reference signal receiving quality (Reference Signal Receiving Quality, RSRQ), signal-to-noise ratio (SIGNAL-NOISE RATIO, SNR), etc.

S103, terminal A sends a measurement report to base station A.

It is understandable that since the measurement configuration configures the specific reporting period of the measurement report obtained by the measurement (the interval reportInteval of each measurement report), when the reportAmount value is not r1, the set number of reports can be reported according to the interval. If the reportAmount value is r1, it is only reported once.

Based on this, when the reporting conditions are met, terminal A will execute step S103.

S104, base station A determines that switching is currently required according to the measurement report, and selects base station B as the target base station.

Exemplarily, base station A can determine whether the switching conditions are met based on the relevant information about base station B in the strategy report and the preset switching control strategy, such as determining whether the network quality of base station B is better than the network quality of base station A based on the above-mentioned parameters such as RSRP, RSRQ, SNR, etc. If the preset switching control strategy indicates that the network quality of the newly searched base station (base station B) is better than the network quality of base station A, it is determined that switching is currently required, and the base station corresponding to the measurement report, such as base station B in this embodiment, is determined as the target base station.

S105, base station A sends a handover request to base station B, and carries the context of terminal A in the handover request.

It is understandable that in order to facilitate base station B to know which terminal needs to allocate wireless resources, base station A needs to add the context information necessary for terminal A to perform communication services to the switching request, that is, the above-mentioned terminal A context can be the context information necessary for terminal A to perform communication services.

S106, base station B allocates wireless resources to terminal A according to the context of terminal A.

Among them, the base station B allocates wireless resources to the terminal A, which means allocating uplink/downlink working frequencies, frequency carrier intervals, etc. to the terminal A.

S107, base station B sends a handover request confirmation message to base station A, and carries the radio resources allocated to terminal A in the handover request confirmation message.

Specifically, after base station B allocates wireless resources such as uplink/downlink operating frequencies and frequency carrier intervals to terminal A based on the context information necessary for terminal A to carry out communication services, base station B makes a switching request confirmation message in response to the switching request sent by base station A, and carries the above-mentioned wireless resources allocated to terminal A in the switching request confirmation message, so that terminal A can initiate a switching access request to base station B through the wireless resources.

S108: After receiving the handover request confirmation sent by base station B, base station A generates a handover command and sends the handover command to terminal A.

Specifically, after receiving the handover request confirmation sent by base station B, base station A generates a handover command that also carries the wireless resources allocated by base station B to terminal A. In this way, after receiving the handover command sent by base station A, terminal A can initiate a handover access request to base station B through the wireless resources, that is, execute step S109.

S109, terminal A executes handover in response to the handover command sent by base station A, and sends a handover access request to base station B through the wireless resources allocated by base station B.

S110, after receiving the handover access request sent by terminal A, base station B makes a handover access response in response to the handover access request.

S111, after receiving the handover access response sent by base station B, terminal A sends a handover completion message to base station B to complete the handover.

Therefore, when the network quality of base station A is poor, or an abnormality occurs in the link between terminal A and base station A, causing the service rate of terminal A based on the network to deteriorate, by switching terminal A from base station A to base station B, the link between base station B and the terminal can replace the link between base station A and terminal A, thereby ensuring that the service of terminal A can continue normally.

However, in actual operation, the measurement report reported by the terminal may be lost and not reach the source base station, or after reaching the source base station, the source base station does not process it. In this case, the source base station will not send a switching command to the terminal, and the terminal cannot switch to the target base station in time, resulting in abnormal switching and affecting the services on the terminal, such as the service rate continues to drop, resulting in failure to operate normally. In order to better understand this scenario, take base station A as the source base station, base station B as the base station searched for the first time, and base station C as the base station searched for the second time as an example, and explain it in detail in conjunction with Figure 4.

S201, base station A sends a measurement configuration with a measurement report sending number of 1 to terminal A.

S202: Terminal A performs measurement according to the measurement configuration, and obtains a measurement report including relevant information of base station B.

S203: Terminal A sends a measurement report including relevant information of base station B to base station A.

In this embodiment, the value of reportAmount in the measurement configuration sent by base station A to terminal A is still taken as r1. For the form of the measurement configuration, the measurement report (including relevant information of base station B) obtained by terminal A after measuring the base station B searched for the first time after receiving the measurement configuration, and the specific details of terminal A sending the measurement report to base station A, please refer to the above steps S101 to S103, which will not be repeated here.

Continuing to refer to FIG. 4, illustratively, within 12 seconds after terminal A sends the measurement report corresponding to base station B to base station A, base station A does not process it, that is, does not perform the above steps S104 to S108. In this case, if the network quality of base station A is unstable and continues to deteriorate (determined according to parameters such as RSRP and SNR of base station A), as shown in FIG. 5, when the network quality of base station A (source base station) continues to deteriorate, the service rate of terminal A also continues to decrease within these 12 seconds, and even drops to 0 bps. If terminal A still stays in the area where the measurement report corresponding to base station B is generated for a period of time later, terminal A may not be able to search for other accessible base stations, and no new measurement report will be generated. In this way, when the value of reportAmount is r1, terminal A will no longer send the measurement report corresponding to base station B to base station A. During this period, if the network of base station A is still unavailable, the service rate of terminal A can only remain at 0 bps, which causes the services that need to use the network on terminal A to be unable to proceed normally, affecting the user experience.

Exemplarily, after the above situation occurs, that is, after terminal A sends a measurement report corresponding to base station B to base station A, if base station A has not taken any action, during this period terminal A moves to the boundary of cell C shown in Figure 1, and terminal A searches for base station C. In one implementation method, step S204 can be executed as shown in Figure 4.

S204: Terminal A measures base station C according to the measurement configuration sent by base station A in step S201, and obtains a measurement report including relevant information of base station C.

S205, terminal A sends a measurement report including relevant information of base station C to base station A.

It can be understood that the timing for terminal A to send a measurement report including relevant information of base station C to base station A is also to upload once after the measurement report interval configured in the measurement configuration is met.

Continuing to refer to FIG. 4, illustratively, if base station A is able to process the measurement report after receiving the measurement report including relevant information of base station C reported by the terminal, then steps S206 to S213 may be triggered. implement.

S206: Base station A determines that a handover is currently required based on the measurement report including relevant information of base station C, and selects base station C as a target base station.

The process of determining whether a handover is currently required and whether base station C meets the criteria for being a target base station is similar to the determination process performed on base station B in step S104 in the above embodiment, and will not be described in detail here.

S207, base station A sends a handover request to base station C, and carries the context of terminal A in the handover request.

S208, base station C allocates wireless resources to terminal A according to the context of terminal A.

S209, base station C sends a handover request confirmation message to base station A, and carries the wireless resources allocated to terminal A in the handover request confirmation message.

S210: After receiving the handover request confirmation sent by base station C, base station A generates a handover command and sends the handover command to terminal A.

S211, terminal A executes handover in response to the handover command sent by base station A, and sends a handover access request to base station C through the wireless resources allocated by base station C.

S212: After receiving the handover access request sent by terminal A, base station C makes a handover access response in response to the handover access request.

S213, after receiving the handover access response sent by the base station C, the terminal A sends a handover completion message to the base station C to complete the handover.

It is understandable that when base station C is used as the target base station, the resource allocation, switching process, etc. involved are similar to the processing when base station B is used as the target base station above, and will not be repeated here.

Continuing to refer to Figure 5, illustratively, after terminal A sends a measurement report including relevant information of base station B to base station A at time t1, the service rate of terminal A based on the network continues to deteriorate within 12 seconds when base station A does not process the measurement report corresponding to base station B, until base station C is searched at time t2, and the measurement report corresponding to base station C is sent to base station A. After receiving the processing made by base station A and switching to base station C, the service rate of terminal A based on the network gradually returns to normal.

In this case, if in actual application, the real-time requirements of the business currently being carried out by terminal A are high, and the network quality of base station A has not been restored for a long time, or terminal A has not searched for other accessible base stations, such as base station C, and then the measurement report corresponding to base station C is sent to base station A, or base station A still does not process the measurement report corresponding to base station C sent by terminal A, then before the network of base station A is restored, or terminal A enters other cells and switches to other base stations, the business of terminal A will not be able to proceed normally.

In view of this, the present application provides a method for processing abnormal switching of a frame, aiming to enable the terminal to always receive the switching command sent by the source base station, so that the terminal can switch to an available network in time according to the switching command to ensure service quality.

In order to better understand the technical solution provided by the embodiments of the present application, before describing the technical solution of the embodiments of the present application, the hardware structure of the terminal device (such as a mobile phone, a tablet computer, a touch-screen PC, etc.) to which the embodiments of the present application are applicable is first described in conjunction with the accompanying drawings.

6 , the terminal device 100 may include: a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone jack 170D, sensor module 180, button 190, motor 191, indicator 192, camera 193, display screen 194, and subscriber identification module (SIM) card interface 195, etc.

Exemplarily, in some implementations, the sensor module 180 may include a pressure sensor, a gyroscope sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, a bone conduction sensor, etc., which are not listed one by one here and the present application does not limit this.

In addition, it should be noted that the processor 110 may include one or more processing units, for example, the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a memory, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural network processor (neural-network processing unit, NPU), etc. Among them, different processing units may be independent devices or integrated in one or more processors.

It is understandable that the controller may be the nerve center and command center of the terminal device 100. In practical applications, the controller may generate an operation control signal according to the instruction operation code and the timing signal to complete the control of fetching and executing instructions.

In addition, it should be noted that a memory may be provided in the processor 110 for storing instructions and data. In some implementations, the memory in the processor 110 is a cache memory. The memory may store instructions or data that the processor 110 has just used or cyclically used. If the processor 110 needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the processor 110, and thus improves the efficiency of the system.

For example, in some implementations, the processor 110 may include one or more interfaces. The interface may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input/output (GPIO) interface, a subscriber identity module (SIM) interface, and/or a universal serial bus (USB) interface, etc.

Continuing to refer to FIG. 6 , illustratively, the charging management module 140 is used to receive charging input from a charger. The charger may be a wireless charger or a wired charger. In some wired charging implementations, the charging management module 140 may receive charging input from a wired charger through the USB interface 130. In some wireless charging implementations, the charging management module 140 may receive wireless charging input through a wireless charging coil of the terminal device 100. While the charging management module 140 is charging the battery 142, it may also power the terminal device through the power management module 141.

Continuing to refer to FIG. 6 , illustratively, the power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charging management module 140 to power the processor 110, the internal memory 121, the external memory, the display screen 194, the camera 193, and the wireless communication module 160. The power management module 141 can also be used to monitor parameters such as battery capacity, battery cycle number, battery health status (leakage, impedance), etc. In some other implementations, the power management module 141 can also be used to monitor battery capacity, battery cycle number, battery health status (leakage, impedance), etc. It is arranged in the processor 110. In some other implementations, the power management module 141 and the charging management module 140 may also be arranged in the same device.

Continuing to refer to FIG. 6 , illustratively, the wireless communication function of the terminal device 100 may be implemented through antenna 1 , antenna 2 , mobile communication module 150 , wireless communication module 160 , a modem processor, and a baseband processor.

It should be noted that antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in terminal device 100 can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve the utilization of antennas. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In some other implementations, the antenna can be used in combination with a tuning switch.

Continuing to refer to FIG. 6 , illustratively, the mobile communication module 150 can provide a solution for wireless communication including 2G/3G/4G/5G applied to the terminal device 100. The mobile communication module 150 can include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 150 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna 1. In some implementations, at least some of the functional modules of the mobile communication module 150 can be set in the processor 110. In some implementations, at least some of the functional modules of the mobile communication module 150 can be set in the same device as at least some of the modules of the processor 110.

In addition, it should be noted that the modem processor may include a modulator and a demodulator. Among them, the modulator is used to modulate the low-frequency baseband signal to be sent into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. After the low-frequency baseband signal is processed by the baseband processor, it is passed to the application processor. The application processor outputs a sound signal through an audio device (not limited to a speaker 170A, a receiver 170B, etc.), or displays an image or video through a display screen 194. In some implementations, the modem processor may be an independent device. In other implementations, the modem processor may be independent of the processor 110 and be set in the same device as the mobile communication module 150 or other functional modules.

Continuing to refer to FIG. 6 , illustratively, the wireless communication module 160 can provide wireless communication solutions including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) network), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared (IR), etc., which are applied to the terminal device 100. The wireless communication module 160 can be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the electromagnetic wave signal and performs filtering, and sends the processed signal to the processor 110. The wireless communication module 160 can also receive the signal to be sent from the processor 110, modulate the frequency, amplify it, and convert it into electromagnetic waves for radiation through the antenna 2.

Specifically in the technical solution provided in the embodiment of the present application, the terminal device 100 can access the wireless access network composed of the mobile communication module 150 or the wireless communication module 160 and the access base station, and then implement various services based on the network, such as audio and video conferencing, games, etc.

In addition, it should be noted that the terminal device 100 implements the display function through the GPU, the display screen 194, and the application processor. The GPU is a microprocessor for image processing, which connects the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs, which execute Execute program instructions to generate or change display information.

Continuing to refer to FIG. 6 , illustratively, the display screen 194 is used to display images, videos, etc. The display screen 194 includes a display panel. The display panel may be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), Miniled, MicroLed, Micro-oLed, a quantum dot light-emitting diode (QLED), etc. In some implementations, the terminal device 100 may include 1 or N display screens 194, where N is a positive integer greater than 1.

In addition, it should be noted that the terminal device 100 can achieve the shooting function through ISP, camera 193, video codec, GPU, display screen 194 and application processor.

In addition, it should be noted that the ISP is used to process the data fed back by the camera 193. For example, when taking a photo, the shutter is opened, and the light is transmitted to the camera photosensitive element through the lens. The light signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing and converts it into an image visible to the naked eye. The ISP can also perform algorithm optimization on the noise, brightness, and skin color of the image. The ISP can also optimize the exposure, color temperature and other parameters of the shooting scene. In some implementations, the ISP can be set in the camera 193.

In addition, it should be noted that the camera 193 is used to capture static images or videos. The object generates an optical image through the lens and projects it onto the photosensitive element. The photosensitive element can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, and then passes the electrical signal to the ISP to be converted into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into an image signal in a standard RGB, YUV or other format. In some implementations, the terminal device 100 may include 1 or N cameras 193, where N is a positive integer greater than 1.

In addition, it should be noted that the digital signal processor is used to process digital signals, and can process other digital signals in addition to digital image signals. For example, when the terminal device 100 selects a frequency point, the digital signal processor is used to perform Fourier transform on the frequency point energy.

In addition, it should be noted that the video codec is used to compress or decompress digital video. The terminal device 100 can support one or more video codecs. In this way, the terminal device 100 can play or record videos in multiple coding formats, such as: Moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

Continuing to refer to FIG. 6 , illustratively, the external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the terminal device 100. The external memory card communicates with the processor 110 through the external memory interface 120 to implement a data storage function. For example, files such as music and videos are stored in the external memory card.

Continuing to refer to FIG. 6 , illustratively, the internal memory 121 can be used to store computer executable program codes, which include instructions. The processor 110 executes various functional applications and data processing of the terminal device 100 by running the instructions stored in the internal memory 121. The internal memory 121 may include a program storage area and a data storage area. The program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc. The data storage area may store data created during the use of the terminal device 100 (such as audio data, a phone book, etc.), etc. In addition, the internal memory 121 may It includes high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc.

In addition, it should be noted that the terminal device 100 can implement audio functions such as music playback and recording through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the headphone interface 170D, and the application processor.

In addition, it should be noted that the audio module 170 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals. The audio module 170 can also be used to encode and decode audio signals. In some implementations, the audio module 170 can be arranged in the processor 110, or some functional modules of the audio module 170 can be arranged in the processor 110.

Continuing to refer to FIG. 6 , illustratively, the button 190 includes a power button, a volume button, etc. The button 190 may be a mechanical button or a touch button. The terminal device 100 may receive a button input and generate a key signal input related to the user settings and function control of the terminal device 100.

Continuing to refer to Figure 6, illustratively, motor 191 can generate vibration prompts. Motor 191 can be used for incoming call vibration prompts, and can also be used for touch vibration feedback. For example, touch operations acting on different applications (such as taking pictures, audio playback, etc.) can correspond to different vibration feedback effects. For touch operations acting on different areas of the display screen 194, motor 191 can also correspond to different vibration feedback effects. Different application scenarios (for example: time reminders, receiving messages, alarm clocks, games, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect can also support customization.

Continuing to refer to FIG. 6 , illustratively, the indicator 192 may be an indicator light, which may be used to indicate the charging status, power change, or may be used to indicate messages, missed calls, notifications, and the like.

The hardware structure of the terminal device 100 is introduced here. It should be understood that the terminal device 100 shown in FIG6 is only an example. In a specific implementation, the terminal device 100 may have more or fewer components than those shown in the figure, may combine two or more components, or may have different component configurations. The various components shown in FIG6 may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and/or application-specific integrated circuits.

In addition, it should be noted that the abnormal switching processing method provided by the present application is specifically implemented by the modulator (Modem) of the terminal device interacting with the source base station and the target, thereby implementing the terminal switching from the source base station to the target base station. The processing logic for the interaction between the Modem and the source base station and the target base station is specifically completed in the protocol stack corresponding to the Modem.

Exemplarily, the protocol stack is, for example, a 3rd Generation Partnership Project (3GPP) protocol stack, and the architecture of the 3GPP protocol stack is shown in FIG7 .

As shown in Figure 7, illustratively, the 3GPP protocol stack generally includes three layers, namely, a physical layer (Physical Layer, PHY layer) located at the first layer, a medium access control layer (Medium Access Control, MAC) located at the second layer, a radio link control layer (Radio Link Control, RLC layer), a packet data convergence protocol layer (Packet Data Convergence Protocol, PDCP layer) located at the second layer, and a radio resource control layer (Radio Resource Control, RRC layer) located at the third layer.

Continuing to refer to FIG. 7, illustratively, the physical layer uses the physical channel as an interface to receive data transmitted by other devices, and can provide services to the upper layer through the transmission channel, such as transmitting the measurement configuration and control information sent by the source base station to the resource-free control layer. In the resource-free control layer, the control terminal can send a measurement report to the source base station. After that, whether to start the timer and the duration set for the timer are determined, thereby implementing the processing of the abnormal switching processing method provided by the present application.

Referring to Figure 8, for example, still taking base station A as the source base station, the measurement report generated for the first time by terminal A according to the measurement configuration sent by base station A is for base station B, and the abnormal switching processing method provided in this application is specifically described.

S301, base station A sends a measurement configuration with a measurement report sending number of 1 to terminal A.

S302: Terminal A performs measurement according to the measurement configuration, and obtains a measurement report including relevant information of base station B.

S303, terminal A sends a measurement report including relevant information of base station B to base station A.

S304: After sending a measurement report corresponding to base station B to base station A, terminal A starts a timer.

Specifically, the condition for terminal A to start the timer must at least satisfy that the value of reportAmount configured in the measurement configuration is not Infinity (infinite times), but a known fixed number of times, such as r1 times mentioned above.

Regarding other judgment strategies for determining whether to start the timer, and specific implementation details of setting the timing duration of the started timer, please see below (corresponding content of the embodiment shown in Figure 11), which will not be repeated here.

In addition, it is understandable that when starting the timer, it is necessary to set a timing duration for the timer. In order to shorten the time that base station A does not process the measurement report sent by terminal A, causing terminal A to stay at base station A continuously, thereby avoiding affecting the services of terminal A, the duration set for the timer can be relatively short, such as T1=5s in Figure 8.

Continuing to refer to FIG8, illustratively, within 5 seconds after terminal A sends the measurement report corresponding to base station B to base station A, that is, within the timing duration T1 of the timer, if base station A does not process (does not respond to the measurement report), the above steps S104 to S108 are not executed. After reaching the timing duration T1 set by the timer, the timer is automatically turned off, and terminal A will resend the measurement report including the relevant information of base station B to base station A, that is, execute step S305.

S305: Terminal A resends the measurement report including relevant information of base station B to base station A.

Continuing to refer to FIG8 , if terminal A resends the measurement report corresponding to base station B to base station A, and base station A processes it this time, step S306 will be executed, and if base station B can respond normally, steps S307 to S313 can be executed sequentially.

S306: Base station A determines that a handover is currently required based on the measurement report including relevant information of base station B, and selects base station B as a target base station.

The process of determining whether a handover is currently required and whether base station B meets the criteria of being a target base station is similar to the determination process performed on base station B in step S104 in the above embodiment, and will not be described in detail here.

S307, base station A sends a handover request to base station B, and carries the context of terminal A in the handover request.

S308, base station B allocates wireless resources to terminal A according to the context of terminal A.

S309, base station B sends a handover request confirmation message to base station A, and carries the wireless resources allocated to terminal A in the handover request confirmation message.

S310: After receiving the handover request confirmation sent by base station B, base station A generates a handover command and sends the handover command to terminal A.

S311, terminal A executes handover in response to the handover command sent by base station A, and sends a handover access request to base station B through the wireless resources allocated by base station B.

S312: After receiving the handover access request sent by terminal A, base station B makes a handover access response in response to the handover access request.

S313, after receiving the handover access response sent by base station B, terminal A sends a handover completion message to base station B to complete the handover.

The operations of step S306 to step S313 are substantially similar to those of step S104 to step S111 in the above embodiment, and are not described in detail here.

Therefore, the value of reportAmount in the measurement configuration sent by base station A (source base station) to terminal A is not Infinity (infinite times), but a known fixed number of times, such as r1 times mentioned above. After terminal A meets the reporting conditions specified in the measurement configuration and reports the measurement report corresponding to the currently searched available base station (such as base station B) to base station A, the timer is started. When no feedback is received from base station A regarding the measurement report corresponding to base station B within the timing period, the measurement report corresponding to base station B is resent to base station A after the timing period ends, so that base station A can receive the measurement report reported by terminal A again, thereby processing and triggering terminal A to switch to base station B with better network quality in time, so that the service rate of terminal A can be restored in time, thereby ensuring that the service of terminal A can proceed normally.

Referring to FIG9 , illustratively, based on the abnormal switching processing method provided in this embodiment, terminal A sends a measurement report corresponding to base station B to base station A at time t1, and starts a timer (T1=5s). If no feedback from base station A regarding the measurement report is received within 5s from t1 to t3, that is, within the timing duration, and the service rate of terminal A gradually decreases as the network provided by base station A deteriorates, after the timing duration ends, at time t3, terminal A will re-report the measurement report corresponding to base station B to base station A. If base station A gives feedback in time after the reporting operation here, after time t3, terminal A can switch to base station B with better network quality according to the switching command issued by base station A, so that the service rate of terminal A can show an upward trend, thereby ensuring the normal operation of terminal A's service, and the long-term inability to access base station B in FIG5 will not occur, causing the service rate of terminal A to drop to 0bps, until terminal A searches for a new base station, such as base station C, and reports the measurement report corresponding to base station C to base station A, base station A responds, and the terminal switches to base station C to restore the service rate to normal.

In addition, in order to avoid the situation where the source base station still fails to process the measurement report resent by the terminal after the timing duration, thereby causing the terminal to be unable to switch to an available base station in time, in some implementations, after the measurement report is resent at the end of the timing duration, if the retransmission condition is still met, the timer can be started again, and if no feedback is received from the source base station within the timing duration, the measurement report can be resent again. According to this implementation logic, the retransmission of the measurement report of the previous base station is stopped until feedback is received from the source base station after the measurement report is resent, or the terminal leaves the cell where the source base station is located, or other available base stations are searched to generate a new measurement report. For ease of understanding, the following is explained in conjunction with Figure 10.

Referring to FIG. 10 , the method for processing abnormal switching provided in this embodiment specifically includes:

S401, base station A sends a measurement configuration with a measurement report sending number of 1 to terminal A.

S402: Terminal A performs measurement according to the measurement configuration, and obtains a measurement report including relevant information of base station B.

S403, terminal A sends a measurement report including relevant information of base station B to base station A.

S404: After sending a measurement report corresponding to base station B to base station A, terminal A starts a timer.

S405, terminal A resends the measurement report including relevant information of base station B to base station A.

For implementation details of terminal A starting the timer and resending the measurement report corresponding to base station B after the timing duration expires, please refer to step S304 and step S305 in the above embodiment, which will not be repeated here.

S406: After terminal A resends the measurement report including relevant information of base station B to base station A, terminal A restarts the timer.

Exemplarily, in some implementations, the timing duration of the timer started later may be shorter than the timing duration of the timer started last time, such as setting the timing duration of the timer started in step S404 to T1=5s, and setting the timing duration of the timer started in step S406 to T2=4s. If no processing is received from base station A later, the timing duration of the timer started again may be gradually reduced to the measurement report interval specified in the measurement configuration, such as 1024ms.

Exemplarily, in other implementations, the timing duration of the timer started each time may be the same.

Continuing to refer to FIG. 10 , illustratively, if terminal A resends the measurement report of base station B to base station A, base station A makes a process, such as completing the interaction with base station B, that is, steps S407 to S411 are executed. If the processing of steps S407 to S411 is completed within the timing duration T2, that is, terminal A receives the switching command sent by base station A within T2, such as within 2s in the figure, terminal A will choose to turn off the timer and then execute step S412.

In addition, it is understandable that if terminal A receives the switching command sent by base station A when the timing duration T2 ends, the timer is automatically closed, and terminal A directly responds to the switching command, that is, executes step S412.

In addition, it should be understood that if terminal A ends but has not yet completed sending the switching command to base station A, it can continue to determine whether the timer start conditions are met, and if so, repeat the measurement report again, start the timer, set the timing duration, and re-execute the above processing.

In addition, it should be noted that, in order to prevent base station A from receiving the measurement report sent by terminal A for processing, such as interacting with the determined target base station, during the process of executing steps S407 to S410, before sending the handover command to terminal A in time, the timer started by terminal A reaches the timing duration, thereby triggering retransmission, and the timing duration set by the timer needs to be greater than the total duration of base station A and base station B executing steps S407 to S411. For example, under normal circumstances, when the processing duration of the process is 500ms, the timing duration of the timer needs to be at least one cycle greater than the processing duration, such as at least 1s.

S407, base station A determines that switching is currently required according to the measurement report including relevant information of base station B, and selects base station B as the target base station.

S408, base station A sends a handover request to base station B, and carries the context of terminal A in the handover request.

S409, base station B allocates wireless resources to terminal A according to the context of terminal A.

S410, base station B sends a handover request confirmation message to base station A, and carries the radio resources allocated to terminal A in the handover request confirmation message.

S411: After receiving the handover request confirmation sent by base station B, base station A generates a handover command and sends the handover command to terminal A.

S412, terminal A receives the switching command sent again by base station A within the timing time of the timer started for the second time, turns off the timer started for the second time, responds to the switching command sent by base station A, executes the switching, and sends a switching access request to base station B through the wireless resources allocated by base station B.

S413, after receiving the handover access request sent by terminal A, base station B makes a handover access response in response to the handover access request.

S414, after receiving the handover access response sent by base station B, terminal A sends a handover completion message to base station B to complete the handover.

The operations of step S407 to step S414 are substantially similar to those of step S104 to step S111 in the above embodiment, and are not described in detail here.

Therefore, based on the abnormal switching processing method provided in this embodiment, when the source base station currently accessed by terminal A, such as the network of base station A has not returned to normal, and terminal A has not searched for a new available base station, such as base station C, the timer is started multiple times, and the measurement report corresponding to base station B is resent after the timed period, until feedback from base station A regarding the measurement report of base station B is received, then the measurement report is repeated and the timer is started, so that terminal A can always receive the switching command sent by base station A, so that terminal A can switch to an available network in time according to the switching command to ensure service quality.

In order to better understand the specific implementation details of appropriately starting a timer and setting the timing duration of the started timer in the abnormal switching processing method provided in the embodiment of the present application, a specific description is given below in conjunction with Figure 11.

Referring to FIG. 11 , the method for processing abnormal switching provided in the embodiment of the present application specifically includes:

S501: Receive a measurement configuration sent by a source base station, where the number of measurement report transmissions configured in the measurement configuration is M.

Exemplarily, the source base station is, for example, the base station A mentioned above, and the number of measurement report transmission times M configured in the measurement configuration is the reportAmount mentioned above.

Regarding other configuration information included in the measurement configuration sent by the source base station, as shown in FIG. 3 , the specific description can be found above and will not be repeated here.

In addition, it can be understood that when M is reportAmount, the implementation premise of the abnormal switching method provided in this embodiment is that the value of reportAmount is not Infinity (countless times), that is, it can be any one of r1, r2, r4, r8, r16, r32, r64 mentioned above, so M∈{1, 2, 4, 8, 16, 32, 64}.

S502: In a source cell corresponding to the source base station, measure the searched first base station according to the measurement configuration to obtain a first measurement report corresponding to the first base station.

Exemplarily, when the source base station is the base station A mentioned above, the source cell is, for example, the cell A shown in FIG. 1 . When the terminal device (terminal A in Figure 1) is located in area AB in Figure 1, since area AB is in area A covered by base station A and in area B covered by base station B, base station B, that is, the first base station mentioned in this embodiment, can be searched in area AB.

Regarding the specific implementation details of the terminal device measuring the first base station according to the measurement configuration sent by the source base station, and then obtaining the first measurement report corresponding to the first base station, please refer to the above description of terminal A measuring base station B according to the measurement configuration sent by base station A, and then obtaining the measurement report including relevant information of base station B, which will not be repeated here.

S503, after sending the first measurement report to the source base station for the M-1th time, when the switching command made by the source base station for the first measurement report is still not received, when the measurement report reporting interval configured in the measurement configuration is met, the first measurement report is sent to the source base station for the Mth time, and the first timer of the first timing duration is started.

In order to avoid that in all scenarios, the terminal device starts the first timer of the first timing duration after sending the first measurement report for the last time, which causes the source base station to be overloaded and also increases the waste of resources of the terminal device. When sending the first measurement report for the last time, it can be determined whether the first timer is currently satisfied, triggering the terminal device to execute the process of resending the first measurement report.

Exemplarily, in some implementations, before sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, it can be determined whether the terminal device is in a moving state. For example, it can be determined whether the terminal device is moving based on the displacement change of the mobile terminal device within a continuous time period.

Accordingly, when the mobile device is in a moving state, for example, the current moving speed can be obtained based on the accelerometer/acceleration sensor in the terminal device, or the next moving speed of the terminal device can be estimated based on the position change of the terminal device within a historical period of time, such as the moving speed v in Figure 12, and the distance between the current position and the cell boundary, such as the distance d between the terminal and the boundary of cell A in Figure 12.

Continuing to refer to FIG. 12 , for example, after obtaining the moving speed v and the distance d, the moving time can be estimated based on the calculation formula of speed, distance and time (moving time = d/v).

Accordingly, when the moving time is greater than the first timing duration, it can be determined that the condition for starting the first timer is met, that is, step S503 can be executed. On the contrary, it indicates that the terminal device will move out of cell A before the first timing duration ends. In this case, the terminal device will search for base station C, and then generate a measurement report (such as a second measurement report) including relevant information of base station C, thereby sending the second measurement report to the source base station. Therefore, when the moving duration is not greater than the first timing duration, the terminal device does not need to start the first timer, and can directly send the last, i.e., the Mth, first measurement report to the source base station.

Exemplarily, in other implementations, the carrying capacity of the channel between the terminal device and the source base station can be determined based on the current reference signal received power RSRP of the source base station, and/or the reference signal received instruction RSRQ, and/or the signal-to-noise ratio; and then when the carrying capacity of the channel meets the retransmission condition, the step of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration is executed; otherwise, the first measurement report is only sent to the source base station for the Mth time.

Exemplarily, in other implementations, when the carrying capacity of the channel between the terminal device and the source base station is limited, the priority of the terminal device currently connected to the source base station can be further determined, and then based on the priority of the terminal device, a terminal device with a high priority is selected to execute the steps of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration; while a terminal device with a low priority only sends the first measurement report to the source base station for the Mth time.

The terminal devices currently accessing the source base station include a first terminal device and a second terminal device, and the carrying capacity of the source base station only supports one terminal device to start the timer and resend the first measurement report. The selection of the terminal device may follow the following rules.

Exemplarily, when the priority of the first terminal device is higher than that of the second terminal device, the first terminal device executes the steps of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, and the second terminal device only sends the first measurement report to the source base station for the Mth time.

Exemplarily, when the priority of the second terminal device is higher than that of the first terminal device, the second terminal device executes the steps of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, and the first terminal device only sends the first measurement report to the source base station for the Mth time.

Exemplarily, in other implementations, when the priority of the first terminal device is the same as that of the second terminal device, the priority of the services currently processed by the two terminal devices can be further determined, and then, based on the priority of the services, the terminal device with the higher service priority is selected to execute the steps of sending the first measurement report to the source base station for the Mth time and starting the first timer for the first timing duration; while the terminal device with the lower priority only sends the first measurement report to the source base station for the Mth time.

Taking the example that the service currently processed by the first terminal device is of the first priority and the service currently processed by the second terminal device is of the second priority, when the first priority is higher than the second highest priority, the first terminal device executes the step of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, and the second terminal device only sends the first measurement report to the source base station for the Mth time; when the second priority is higher than the first highest priority, the second terminal device executes the step of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, and the first terminal device only sends the first measurement report to the source base station for the Mth time.

It is understandable that the services currently processed by the terminal device may be, for example, audio and video services, audio and video conferencing services, online game services, instant messaging services, etc.

For example, priorities can be divided according to the real-time requirements and network quality requirements of these services. For example, audio and video services, audio and video conferencing services, online gaming services and other service types with high real-time requirements and high network quality requirements can be set to high priority, while instant messaging services can be set to low priority.

Furthermore, when the priorities of services in different terminal devices are the same, other judgment conditions can be combined, such as the distance of the terminal device from the source base station, and the waiting time from the first time the terminal device sends the first measurement report to the current time, and then a suitable terminal device is comprehensively selected to start the first timer to trigger the process of resending the first measurement report.

For example, a base station close to the source base station may be selected, so as to ensure as much as possible that the retransmitted first measurement report can reach the source base station so that the source base station can make a processing.

For another example, a longer waiting time may be selected so that the terminal device can be switched to the target base station in time, so that the service rate of the terminal can be restored to normal in time, ensuring that the services thereon can proceed normally.

In addition, it should be noted that in order to avoid the source base station still not processing after receiving the first measurement report resent by the terminal device, resulting in the terminal device being unable to switch to the first base station, after resending the first measurement report to the source base station, a timer can be started again, such as starting a second timer with a second timing duration, such as the timer T2=4s started in step S406 in FIG10.

Accordingly, when the switching command made by the source base station based on the retransmitted first measurement report is not received within the second timing period, after the second timing period ends, the first measurement report can be resent to the source base station when the measurement report reporting interval configured in the measurement configuration is met.

Accordingly, at the end of the second timing duration, if a switching command made by the source base station for the resent first measurement report is received, the switching is performed; if a switching command made by the source base station for the resent first measurement report is received within the second timing duration, the second timer is first turned off, and then the switching is performed. For specific implementation details, please refer to the embodiment shown in Figure 10, which will not be repeated here.

In addition, it should be noted that in actual operation, if the timer needs to be started multiple times, it is necessary to ensure that the timing duration corresponding to each timer started is greater than the time it takes for the source base station to process the first measurement report and issue a switching command, such as the first timing duration and the second timing duration mentioned above are both greater than the time it takes for the source base station to process the first measurement report and issue a switching command. In this way, it can be ensured that the switching command issued by the source base station under normal processing of the first measurement report can be received by the terminal device, avoiding the terminal device triggering the operation of resending the first measurement report when the switching command can arrive normally, thereby reducing unnecessary resource occupation.

S504: When no switching command is received from the source base station according to the first measurement report within the first timing period, after the first timing period ends and when the measurement report reporting interval configured in the measurement configuration is met, the first measurement report is resent to the source base station.

It can be understood that step S504 in this embodiment is similar to step S304 and step S404 in the above embodiments. The specific implementation details can be found in the above embodiments and will not be repeated here.

In addition, it is understandable that if a switching command is received from the source base station for the first measurement report sent for the Mth time within the first timing duration, the first timer needs to be turned off to perform the switching. In this way, the terminal device will not perform the operation of re-sending the first measurement report to the source base station at the end of the first timing duration, thereby reducing resource occupation and meaningless operations.

S505: In response to a handover command made by the source base station according to the resent first measurement report, perform handover.

Regarding the terminal device responding to the handover command sent by the source base station, performing the handover, for example, sending a handover access request to the first base station through the wireless resources indicated in the handover command, and after receiving the handover access response made by the first base station to the handover access request, responding to the handover access response, sending a handover completion message to the first base station, thereby completing the handover. For specific implementation details, please refer to the above, which will not be repeated here.

Therefore, the abnormal switching processing method provided in the embodiment of the present application is that when the terminal device still does not receive the switching command made by the source base station for the first measurement report after sending the first measurement report to the source base station for the M-1th time, after the Mth time, that is, the last measurement report sending opportunity configured in the measurement configuration sent by the source base station, by starting the first timer with a first timing duration, if the switching command sent by the source base station is still not received at the end of the first timing duration, the first measurement report is resent. In this way, even if the number of measurement report sending times configured in the measurement configuration is reached, the terminal device can still be triggered to send the first measurement report to the source base station until the switching command made by the source base station for the first measurement report is received, thereby ensuring that the terminal device can always receive the switching command sent by the source base station, and then switch to an available network in time according to the switching command to ensure service quality.

In addition, it is understood that in order to implement the above functions, the terminal device includes hardware and/or software modules corresponding to the execution of each function. In combination with the algorithm steps of each example described in the embodiments disclosed in this article, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. A skilled person may use different methods to implement the described functions for each specific application in combination with the embodiments, but such implementation should not be considered to exceed the scope of the present application.

In addition, it should be noted that the switching anomaly processing method provided by the above embodiments implemented by the terminal device in the actual application scenario can also be executed by a chip system included in the terminal device, wherein the chip system may include a processor. The chip system can be coupled to the memory so that the chip system calls the computer program stored in the memory when it is running to implement the steps executed by the above terminal device. The processor in the chip system can be an application processor or a processor other than an application processor.

In addition, an embodiment of the present application also provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed on a terminal device, the terminal device executes the above-mentioned related method steps to implement the method for handling switching anomalies in the above-mentioned embodiment.

In addition, an embodiment of the present application further provides a computer program product. When the computer program product is run on a terminal device, the terminal device executes the above-mentioned related steps to implement the method for handling switching anomalies in the above-mentioned embodiment.

In addition, an embodiment of the present application also provides a chip (which may also be a component or module), which may include one or more processing circuits and one or more transceiver pins; wherein the transceiver pins and the processing circuit communicate with each other through an internal connection path, and the processing circuit executes the above-mentioned related method steps to implement the switching exception processing method in the above-mentioned embodiment, so as to control the receiving pin to receive the signal, so as to control the sending pin to send the signal.

In addition, it can be seen from the above description that the terminal device, computer-readable storage medium, computer program product or chip provided in the embodiments of the present application are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

A method for handling handover anomalies, characterized in that it is applied to a terminal device, and the method comprises:

Receive a measurement configuration sent by a source base station, where the number of measurement report transmissions configured in the measurement configuration is M, and M is greater than 0;

In a source cell corresponding to the source base station, measuring the searched first base station according to the measurement configuration, and obtaining a first measurement report corresponding to the first base station;

Before sending the first measurement report to the source base station for the Mth time, when no switching command made by the source base station for the first measurement report is received, when the measurement report reporting interval configured in the measurement configuration is met, sending the first measurement report to the source base station for the Mth time, and starting a first timer of a first timing duration;

When no handover command made by the source base station according to the first measurement report is received within the first timing duration, after the first timing duration ends and when the measurement report reporting interval configured in the measurement configuration is met, resending the first measurement report to the source base station;

In response to a handover command made by the source base station according to the resent first measurement report, a handover is performed.
The method according to claim 1 is characterized in that, before sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, the method further comprises:

When the terminal device is in a moving state, obtaining a current moving speed and a distance between a current position and a boundary of the source cell;

According to the moving speed and distance, estimating the moving time of the terminal device moving from the current position to the border of the source cell at the moving speed;

When the moving time is greater than the first timing duration, executing the step of sending the first measurement report to the source base station for the Mth time and starting a first timer of the first timing duration;

Otherwise, the first measurement report is only sent to the source base station for the Mth time.
The method according to claim 1 is characterized in that, before sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, the method further comprises:

Determine the carrying capacity of the channel between the terminal device and the source base station according to the current reference signal received power RSRP of the source base station, and/or the reference signal received instruction RSRQ, and/or the signal-to-noise ratio;

When the carrying capacity of the channel meets the retransmission condition, executing the step of sending the first measurement report to the source base station for the Mth time and starting a first timer with a first timing duration;

When the carrying capacity of the channel does not meet the retransmission condition, only the first measurement report is sent to the source base station for the Mth time.
The method according to claim 3, characterized in that the terminal device accessing the source base station includes a first terminal device and a second terminal device;

When the carrying capacity of the channel supports only one terminal device to start a timer and resend the first measurement report, before sending the first measurement report to the source base station for the Mth time and starting a first timer of a first timing duration, the method further includes:

When the priority of the first terminal device is higher than the priority of the second terminal device, the first terminal device performs the step of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, and the second terminal device only sends the first measurement report to the source base station for the Mth time;

When the priority of the second terminal device is higher than that of the first terminal device, the second terminal device executes the step of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, and the first terminal device only sends the first measurement report to the source base station for the Mth time.
The method according to claim 4, characterized in that the method further comprises:

When the priority of the first terminal device is equal to the priority of the second terminal device, determining a first priority of a service currently processed by the first terminal device and a second priority of a service currently processed by the second terminal device;

When the first priority is higher than the second priority, the first terminal device performs the step of sending the first measurement report to the source base station for the Mth time and starting a first timer of a first timing duration, and the second terminal device only sends the first measurement report to the source base station for the Mth time;

When the second priority is higher than the first priority, the second terminal device executes the step of sending the first measurement report to the source base station for the Mth time and starting the first timer of the first timing duration, and the first terminal device only sends the first measurement report to the source base station for the Mth time.
The method according to claim 1, characterized in that after the resending of the first measurement report to the source base station, the method further comprises:

Start a second timer with a second timing duration;

When no handover command made by the source base station according to the retransmitted first measurement report is received within the second timing duration, after the second timing duration ends and when the measurement report reporting interval configured in the measurement configuration is met, resending the first measurement report to the source base station;

When the second timing duration ends, upon receiving a handover command made by the source base station in response to the resent first measurement report, performing handover;

When a switching command made by the source base station in response to the resent first measurement report is received within the second timing duration, the second timer is turned off and the switching is performed.
The method according to claim 6 is characterized in that both the first timing duration and the second timing duration are greater than the duration for the source base station to process the first measurement report and make the switching command.
The method according to claim 1, characterized in that the method further comprises:

When a switching command made by the source base station in response to the first measurement report sent for the Mth time is received within the first timing duration, the first timer is turned off and the switching is performed.
The method according to any one of claims 1 to 8, characterized in that the performing switching comprises:

Sending a handover access request to the first base station by using the wireless resources indicated in the handover command;

In response to a handover access response made by the first base station to the handover access request, a handover completion message is sent to the first base station to complete the handover.
The method according to any one of claims 1 to 8, characterized in that M∈{1, 2, 4, 8, 16, 32, 64}.
A method for handling handover anomalies, characterized in that it is applied to a terminal device, and the method comprises:

Receive a measurement configuration sent by a source base station, where the number of measurement report transmissions configured in the measurement configuration is M, where M is an integer greater than 0;

In a source cell corresponding to the source base station, measuring the searched first base station according to the measurement configuration, and obtaining a first measurement report corresponding to the first base station;

Sending the first measurement report to the source base station, and starting a first timer with a first timing duration;

When a handover command made by the source base station according to the first measurement report is not received within the first timing duration, after the first timing duration ends, the first measurement report is resent to the source base station; if M is greater than 1, the first timing duration is not greater than the measurement report sending interval configured in the measurement configuration;

In response to a handover command made by the source base station according to the resent first measurement report, a handover is performed.
The method according to claim 11, characterized in that before sending the first measurement report to the source base station and starting the first timer of the first timing duration, the method further comprises:

When the terminal device is in a moving state, obtaining a current moving speed and a distance between a current position and a boundary of the source cell;

According to the moving speed and distance, estimating the moving time of the terminal device moving from the current position to the border of the source cell at the moving speed;

When the moving time is greater than the first timing duration, executing the step of sending the first measurement report to the source base station and starting a first timer of the first timing duration;

Otherwise, only the first measurement report is sent to the source base station.
The method according to claim 11, characterized in that before sending the first measurement report to the source base station and starting the first timer of the first timing duration, the method further comprises:

Determine the carrying capacity of the channel between the terminal device and the source base station according to the current reference signal received power RSRP of the source base station, and/or the reference signal received instruction RSRQ, and/or the signal-to-noise ratio;

When the carrying capacity of the channel meets the retransmission condition, executing the step of sending the first measurement report to the source base station and starting a first timer with a first timing duration;

When the carrying capacity of the channel does not meet the retransmission condition, only the first measurement report is sent to the source base station.
The method according to claim 13, characterized in that the terminal device accessing the source base station includes a first terminal device and a second terminal device;

When the carrying capacity of the channel supports only one terminal device to start a timer and resend the first measurement report, before sending the first measurement report to the source base station and starting a first timer of a first timing duration, the method further includes:

When the priority of the first terminal device is higher than the priority of the second terminal device, the first terminal device performs the step of sending the first measurement report to the source base station and starting the first timer of the first timing duration, and the second terminal device only sends the first measurement report to the source base station;

When the priority of the second terminal device is higher than that of the first terminal device, the second terminal device executes the steps of sending the first measurement report to the source base station and starting the first timer of the first timing duration, and the first terminal device only sends the first measurement report to the source base station.
The method according to claim 14, characterized in that the method further comprises:

When the priority of the first terminal device is equal to the priority of the second terminal device, determining a first priority of a service currently processed by the first terminal device and a second priority of a service currently processed by the second terminal device;

When the first priority is higher than the second priority, the first terminal device performs the step of sending the first measurement report to the source base station and starting a first timer of a first timing duration, and the second terminal device only sends the first measurement report to the source base station;

When the second priority is higher than the first priority, the second terminal device executes the steps of sending the first measurement report to the source base station and starting the first timer of the first timing duration, and the first terminal device only sends the first measurement report to the source base station.
The method according to claim 11, characterized in that after the resending of the first measurement report to the source base station, the method further comprises:

Start a second timer with a second timing duration;

When no handover command made by the source base station according to the retransmitted first measurement report is received within the second timing duration, after the second timing duration ends and when the measurement report reporting interval configured in the measurement configuration is met, resending the first measurement report to the source base station;

When the second timing duration ends, upon receiving a handover command made by the source base station in response to the resent first measurement report, performing handover;

When a switching command made by the source base station in response to the resent first measurement report is received within the second timing duration, the second timer is turned off and the switching is performed.
The method according to claim 16 is characterized in that both the first timing duration and the second timing duration are greater than the duration for the source base station to process the first measurement report and make the switching command.
The method according to claim 11, characterized in that the method further comprises:

When a switching command issued by the first measurement report sent by the source base station is received within the first timing duration, the first timer is turned off and the switching is performed.
The method according to any one of claims 11 to 18, characterized in that the performing switching comprises:

Sending a handover access request to the first base station by using the wireless resources indicated in the handover command;

In response to a handover access response made by the first base station to the handover access request, a handover completion message is sent to the first base station to complete the handover.
The method according to any one of claims 11 to 18, characterized in that M∈{1, 2, 4, 8, 16, 32, 64}.
A terminal device, characterized in that the terminal device includes: a memory and a processor, the memory and the processor are coupled; the memory stores program instructions, and when the program instructions are executed by the processor, the terminal device executes the method for handling switching anomalies as described in any one of claims 1 to 10, or executes the method for handling switching anomalies as described in any one of claims 11 to 20.
A computer-readable storage medium, characterized in that it includes a computer program, which, when executed on a terminal device, enables the terminal device to execute the method for handling a switching anomaly as described in any one of claims 1 to 10, or to execute the method for handling a switching anomaly as described in any one of claims 11 to 20.