Method and apparatus in communication node used for wireless communication

Abstract

The invention discloses a method and an apparatus in a communication node used for wireless communication. The communication node performs the target operation as a response to predicting the failure of the wireless link; the candidates of the target operation comprise a first candidate and a second candidate; the first candidate comprises sending a first message on a first serving cell, and the second candidate does not comprise sending a first message on a serving cell of the terminal; the target operation is whether the first candidate or the second candidate depends on at least a first time interval, and the first time interval is related to at least one of the predicted time of radio link failure and the predicted time of radio link failure; according to the scheme provided by the invention, the wireless link failure can be predicted and determined, and proper UE behaviors can be selected according to different prediction results, so that the reliability and the network optimization efficiency can be balanced.

Description

Technical Field

[0001] The present application relates to a transmission method and device in a wireless communication system, and in particular to a method and device for predicting a radio link failure (RLF). Background Art

[0002] Self-Organizing Networks (SON) include network self-configuration and self-optimization. To optimize the performance of wireless links, the existing 3GPP (the 3rd Generation Partnership Project) protocol supports user equipment (UE) to perform connection reconstruction after discovering a wireless link failure, store relevant information about the wireless link failure, and report the stored relevant information about the wireless link failure based on base station scheduling.

[0003] With the continuous development of wireless communications, demands are becoming increasingly diversified. To this end, 3GPP will further enhance some key technologies in its future evolution. For example, it will apply AI (Artificial Intelligence) or ML (Machine Learning) to the prediction of wireless link failures, report prediction information in advance, and reduce the probability of wireless link failures. Summary of the invention

[0004] The inventors found that in the existing RLF mechanism, when downlink deterioration or random access failure or RLC retransmission failure or switching failure is detected, the radio link failure will be triggered, and RRC reestablishment and cell selection will be initiated. Since the link quality may have seriously deteriorated when the radio link failure is determined, resulting in reestablishment failure or difficulty in finding a suitable cell, the UE will be forced to enter the idle state. The above mechanism may cause a long interruption delay and have a significant impact on the service quality. Therefore, it is necessary to enhance the existing RLF mechanism and introduce an RLF prediction mechanism to reduce the impact of wireless connection failure by predicting possible radio link failures in advance.

[0005] In view of the above problems, the present application provides a solution. In the description of the above problems, the NR system is used as an example. The present application is also applicable to scenarios such as LTE (Long-Term Evolution) or LTE-A (Long-Term Evolution Advanced) or future 6G systems, and achieves technical effects similar to those of the NR system; further, although the present application provides a specific implementation method for the 3GPP system, the present application can also be used in scenarios of non-3GPP systems to achieve technical effects similar to those of the 3GPP system. Furthermore, adopting a unified design scheme for different scenarios can also help reduce hardware complexity and cost. Furthermore, although the original intention of the present application is for the Uu air interface, the present application can also be used for the PC5 port to achieve technical effects similar to those of the Uu air interface. Furthermore, although the original intention of the present application is for LTM, the present application can also be used for conditional LTM or continuous LTM or SCPAC or CHO or CPC, etc., to achieve technical effects similar to those of LTM. Furthermore, although the original intention of this application is for the terminal and base station scenario, this application is also applicable to the V2X (Vehicle-to-Everything) scenario, the communication scenario between the terminal and the relay, and the relay and the base station, to achieve similar technical effects in the terminal and base station scenario. Further, although the original intention of this application is for the terminal and base station scenario, this application is also applicable to the IAB (Integrated Access and Backhaul) communication scenario, to achieve similar technical effects in the terminal and base station scenario. Further, although the original intention of this application is for the terrestrial network (Terrestrial Network, TN) scenario, this application is also applicable to the non-terrestrial network (Non-Terrestrial Network, NTN) communication scenario, to achieve similar technical effects in the TN scenario. In addition, the use of a unified solution for different scenarios also helps to reduce hardware complexity and cost.

[0006] As an embodiment, the interpretation of the terminology in the present application refers to the definition of the 3GPP specification protocol TS36 series.

[0007] As an example, the interpretation of the terms in the present application refers to the definition of the TS38 series of specification protocols of 3GPP.

[0008] As an example, the interpretation of the terms in the present application refers to the definition of the TS37 series of specification protocols of 3GPP.

[0009] It should be noted that, in the absence of conflict, the embodiments and features in any node of the present application can be applied to any other node. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0010] The present application discloses a method used in a terminal, characterized by comprising:

[0011] In response to predicting a radio link failure, performing a target operation; wherein the candidates for the target operation include a first candidate and a second candidate; the first candidate includes sending a first message on a first serving cell, and the second candidate does not include sending the first message on the first serving cell;

[0012] Whether the target operation is the first candidate or the second candidate depends on at least a first time interval, and the first time interval is related to at least one of the predicted time of radio link failure and the predicted time of radio link failure;

[0013] Whether the target operation is the first candidate or the second candidate depends on the first time interval and includes:

[0014] When at least the first time interval satisfies a first time length, the target operation is the first candidate;

[0015] When the first time interval does not satisfy a first time length, the target operation is the second candidate.

[0016] As an embodiment, the problem to be solved by the present application includes: how to enhance the existing RLF process to reduce interruption.

[0017] As an embodiment, the problem to be solved by the present application includes: how to enhance the existing RLF process to achieve link failure prediction.

[0018] As an embodiment, the problem to be solved by the present application includes: how to design UE behaviors such as reporting after predicting link failure to balance signaling overhead and reliability.

[0019] As an embodiment, the characteristics of the above method include: whether the target operation is the first candidate or the second candidate depends on at least a first time interval.

[0020] As an embodiment, the characteristics of the above method include: the first time interval is related to at least one of the predicted time of radio link failure and the predicted time of radio link failure.

[0021] As an embodiment, the benefits of the above method include: being facilitating prediction and determination of wireless link failure.

[0022] As an embodiment, the benefits of the above method include: it is helpful to select appropriate UE behavior according to different prediction results to balance reliability and network optimization efficiency.

[0023] As an embodiment, the benefits of the above method include: it is helpful to improve the robustness of the process.

[0024] As an embodiment, the benefits of the above method include: it is helpful to reduce signaling interaction.

[0025] According to one aspect of the present application, it is characterized in that whether the target operation is the first candidate or the second candidate depends on the state of a wireless link failure monitoring parameter; the wireless link failure monitoring parameter is used to determine wireless link failure.

[0026] As an embodiment, the benefits of the above method include: being conducive to monitoring the channel quality of the first candidate cell.

[0027] As an embodiment, the benefits of the above method include: being conducive to determining UE behavior according to the status of the monitoring parameters.

[0028] As an embodiment, the benefits of the above method include: it is helpful to reduce signaling interaction.

[0029] According to one aspect of the present application, it is characterized in that the second candidate includes RRC connection reestablishment; and the RRC connection reestablishment includes cell selection.

[0030] As an embodiment, the benefits of the above method include: it is helpful to reduce the interruption time of UE.

[0031] As an embodiment, the benefits of the above method include: facilitating early termination of the UE interruption time.

[0032] According to one aspect of the present application, it is characterized in that the first candidate does not include determining a radio link failure, and the second candidate includes determining a radio link failure.

[0033] As an embodiment, the benefits of the above method include: it is helpful to reduce the changes to the existing protocol.

[0034] As an embodiment, the benefits of the above method include: it is conducive to making the protocol flexibly adapt to different prediction results, and it is conducive to balancing network interaction delay and reliability.

[0035] According to one aspect of the present application, it is characterized in that neither the first candidate nor the second candidate includes determining wireless link failure.

[0036] As an embodiment, the benefits of the above method include: being beneficial to the interruption delay of the UE.

[0037] According to one aspect of the present application, it is characterized by comprising:

[0038] In response to receiving the second message, starting a first timer; and stopping the first timer in response to receiving the second message.

[0039] The target operation is the first candidate; and the second message is received when the first timer runs.

[0040] As an embodiment, the benefits of the above method include: being helpful in improving the robustness of the signaling interaction process.

[0041] As an embodiment, the benefits of the above method include: it is helpful to reduce signaling interaction.

[0042] The present application discloses a method used in a base station, characterized by comprising:

[0043] receiving a first message;

[0044] Wherein, as a response to the sender of the first message predicting a radio link failure, the sender of the first message performs a target operation; the candidates for the target operation include a first candidate and a second candidate; the first candidate includes sending the first message on a first serving cell, and the second candidate does not include sending the first message on a serving cell of the terminal; whether the target operation is the first candidate or the second candidate depends on at least a first time interval, and the first time interval is related to at least one of the time when the radio link failure is predicted and the time when the radio link failure is predicted;

[0045] Whether the target operation is the first candidate or the second candidate depends on the first time interval and includes:

[0046] When at least the first time interval satisfies a first time length, the target operation is the first candidate;

[0047] When the first time interval does not satisfy a first time length, the target operation is the second candidate.

[0048] According to one aspect of the present application, it is characterized in that whether the target operation is the first candidate or the second candidate depends on the state of a wireless link failure monitoring parameter; the wireless link failure monitoring parameter is used to determine wireless link failure.

[0049] According to one aspect of the present application, it is characterized in that the second candidate includes RRC connection reestablishment; and the RRC connection reestablishment includes cell selection.

[0050] According to one aspect of the present application, it is characterized in that the first candidate does not include determining a radio link failure, and the second candidate includes determining a radio link failure.

[0051] According to one aspect of the present application, it is characterized in that neither the first candidate nor the second candidate includes determining wireless link failure.

[0052] According to one aspect of the present application, it is characterized in that, accompanying the first message, the sender of the first message starts a first timer; as a response to sending the second message, the sender of the first message stops the first timer;

[0053] The target operation is the first candidate; and the second message is sent when the first timer runs.

[0054] The present application discloses a terminal, characterized in that it includes:

[0055] The terminal includes: one or more processors and a memory;

[0056] The memory is coupled to the one or more processors, and is used to store computer program codes, where the computer program codes include computer instructions, and the one or more processors call the computer instructions to enable the terminal to execute the method used for the terminal.

[0057] The present application discloses a base station, characterized in that it includes:

[0058] The base station includes: one or more processors and a memory;

[0059] The memory is coupled to the one or more processors, and is used to store computer program codes, where the computer program codes include computer instructions, and the one or more processors call the computer instructions to enable the base station to perform the method used for the base station.

[0060] As an embodiment, compared with the traditional solution, this application has the following advantages:

[0061] -. It is helpful to predict and determine the failure of wireless link.

[0062] -. It is helpful to select appropriate UE behavior according to different prediction results to balance reliability and network optimization efficiency.

[0063] -. It is helpful to reduce the interruption time of UE.

[0064] -. It is helpful to reduce the changes to the existing protocols.

[0065] -. It is helpful to improve the robustness of the signaling interaction process.

[0066] -. It is helpful to reduce signaling interaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0068] Figure 1 A flow chart according to an embodiment of the present application is shown;

[0069] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present application is shown;

[0070] Figure 3 A schematic diagram showing an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0071] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0072] Figure 5 A wireless signal transmission flow chart according to an embodiment of the present application is shown;

[0073] Figure 6 A schematic diagram showing a relationship between a target operation and a radio link failure monitoring parameter according to an embodiment of the present application;

[0074] Figure 7 A schematic diagram showing the second candidate according to an embodiment of the present application;

[0075] Figure 8 A schematic diagram showing a first candidate and a second candidate according to an embodiment of the present application;

[0076] Fig. 9 A schematic diagram showing a first candidate and a second candidate according to another embodiment of the present application;

[0077] Fig.10 A structural block diagram of a processing device used in a terminal according to an embodiment of the present application is shown;

[0078] Fig.11 A structural block diagram of a processing device used in a base station according to an embodiment of the present application is shown;

[0079] Fig.12 A schematic diagram of a processing system based on artificial intelligence or machine learning according to an embodiment of the present application is shown.

[0080] Fig.13 A schematic diagram of RAN (Radio Access Network) domain (Domain) AI / ML function deployment according to an embodiment of the present application is shown.

[0081] Fig.14 A schematic diagram showing the deployment of AI / ML functions of a UE according to an embodiment of the present application is shown.

[0082] Fig.15 A schematic diagram of a processing system based on artificial intelligence or machine learning according to another embodiment of the present application is shown. DETAILED DESCRIPTION

[0083] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0084] Example 1

[0085] Embodiment 1 illustrates a flow chart according to an embodiment of the present application, as shown in the attached Figure 1 Attached Figure 1 In the figure, each box represents a step. It should be emphasized that the order of the boxes in the figure does not represent the temporal relationship between the steps represented.

[0086] In Embodiment 1, the terminal in the present application performs a target operation in step 101 as a response to predicting a radio link failure;

[0087] Among them, the candidates for the target operation include a first candidate and a second candidate; the first candidate includes sending a first message on a first serving cell, and the second candidate does not include sending a first message on a serving cell of the terminal; whether the target operation is the first candidate or the second candidate depends on at least a first time interval, and the first time interval is related to at least one of the predicted time of radio link failure and the predicted time of radio link failure; whether the target operation is the first candidate or the second candidate depends on the first time interval including:

[0088] When at least the first time interval satisfies a first time length, the target operation is the first candidate;

[0089] When the first time interval does not satisfy a first time length, the target operation is the second candidate.

[0090] As an embodiment, the first message indicates a prediction result.

[0091] As an embodiment, the first message indicates a measurement result.

[0092] As an embodiment, the first message indicates at least one of a prediction result or a measurement result.

[0093] As an embodiment, the first message indicates a prediction result and a measurement result.

[0094] As an embodiment, the prediction result refers to: a prediction of a potential wireless link failure.

[0095] As a sub-embodiment of the above embodiment, the prediction result includes: the occurrence time of the possible wireless link failure.

[0096] As a sub-embodiment of the above embodiment, the prediction result includes: the probability of occurrence of the possible wireless link failure.

[0097] As a sub-embodiment of the above embodiment, the prediction result includes: a probability of a wireless link failure occurring within a period of time.

[0098] As a sub-embodiment of the above embodiment, the length of the period of time is predefined.

[0099] As a sub-embodiment of the above embodiment, the length of the period of time is fixed.

[0100] As a sub-embodiment of the above embodiment, the length of the period of time is the first time length.

[0101] As a sub-embodiment of the above embodiment, the length of the period of time depends on the output of the AI ​​module.

[0102] As a sub-embodiment of the above embodiment, the length of the period of time is preconfigured.

[0103] As a sub-embodiment of the above embodiment, the length of the period of time is configured by an RRC message.

[0104] As a sub-embodiment of the above embodiment, the length of the period of time is configured by a NAS message.

[0105] As a sub-embodiment of the above embodiment, the probability of wireless link failure occurring within the period of time is a percentage probability.

[0106] As a sub-embodiment of the above embodiment, the probability of wireless link failure occurring within the period of time is a quantified percentage probability.

[0107] As a sub-embodiment of the above embodiment, the probability of wireless link failure occurring within the period of time is a probability density function (PDF).

[0108] As a sub-embodiment of the above embodiment, the probability of wireless link failure occurring within the period of time is a cumulative distribution function (CDF).

[0109] As a sub-embodiment of the above embodiment, the prediction result is a first bit; the first bit indicates whether the probability of a radio link failure occurring to the terminal within the future period of time is greater than or equal to a second threshold.

[0110] As a subsidiary embodiment of the above sub-embodiment, the length of the first bit is 1 bit.

[0111] As a subsidiary embodiment of the above sub-embodiment, the value of the second threshold is 40%.

[0112] As a subsidiary embodiment of the above sub-embodiment, the value of the second threshold is 50%.

[0113] As a subsidiary embodiment of the above sub-embodiment, the value of the second threshold is 60%.

[0114] As a subsidiary embodiment of the above sub-embodiment, the value of the second threshold is 75%.

[0115] As a subsidiary embodiment of the above sub-embodiment, the value of the second threshold is 80%.

[0116] As a subsidiary embodiment of the above sub-embodiment, the value of the second threshold is a positive integer multiple of 5%.

[0117] As a subsidiary embodiment of the above sub-embodiment, the value of the second threshold is fixed.

[0118] As a subsidiary embodiment of the above sub-embodiment, the value of the second threshold is preconfigured.

[0119] As a sub-embodiment of the above embodiment, when the value of the first bit is 1, it indicates that the probability of a radio link failure occurring to the terminal within the future period of time is not less than the second threshold.

[0120] As a sub-embodiment of the above embodiment, when the value of the first bit is 0, it indicates that the probability of a radio link failure occurring to the terminal within the future period of time is less than the second threshold.

[0121] As a sub-embodiment of the above embodiment, when the value of the first bit is 1, it indicates that the probability of a radio link failure occurring to the terminal within the future period of time is greater than the second threshold.

[0122] As a sub-embodiment of the above embodiment, when the value of the first bit is 0, it indicates that the probability of a radio link failure occurring to the terminal within the future period of time is not greater than the second threshold.

[0123] As a sub-embodiment of the above embodiment, when the value of the first bit is 0, it indicates that the probability of a radio link failure occurring to the terminal within the future period of time is not less than the second threshold.

[0124] As a sub-embodiment of the above embodiment, when the value of the first bit is 1, it indicates that the probability of a radio link failure occurring to the terminal within the future period of time is less than the second threshold.

[0125] As a sub-embodiment of the above embodiment, when the value of the first bit is 0, it indicates that the probability of a radio link failure occurring to the terminal within the future period of time is greater than the second threshold.

[0126] As a sub-embodiment of the above embodiment, when the value of the first bit is 1, it indicates that the probability of a radio link failure occurring to the terminal within the future period of time is not greater than the second threshold.

[0127] As an embodiment, the measurement result is L1 measurement.

[0128] As an embodiment, the measurement result is L3 measurement.

[0129] As an embodiment, the measurement result includes RSRP measurement.

[0130] As an embodiment, the measurement result includes RSRQ measurement.

[0131] As an embodiment, the measurement result includes SINR measurement.

[0132] As an embodiment, the measurement result is a Measurement Report.

[0133] As an embodiment, the first message is a Measurement Report.

[0134] As an embodiment, the first message includes a Measurement Report.

[0135] As an embodiment, the measurement result includes a measurement result for the first serving cell.

[0136] As an embodiment, the measurement result includes a measurement result for a neighboring cell.

[0137] As an embodiment, the measurement result is the input of the AI ​​module.

[0138] As an embodiment, the measurement result is part of the input of the AI ​​module.

[0139] As an embodiment, the prediction result depends on the measurement result.

[0140] As an embodiment, the prediction result depends on the output of the AI ​​module; the output of the AI ​​module depends on the input of the AI ​​module; and the measurement result is at least a part of the input of the AI ​​module.

[0141] As an embodiment, the prediction result depends on the output of the AI ​​module.

[0142] As an embodiment, the first message depends on the output of the AI ​​module.

[0143] As an embodiment, the first message indicates the Model ID of the AI ​​module.

[0144] As an embodiment, the first candidate includes: receiving a second message as a response to sending the first message in the first serving cell.

[0145] As an embodiment, the first candidate includes sending a first message on a first serving cell, which means that the first candidate includes sending the first message on at least the first serving cell.

[0146] As an embodiment, the second candidate does not include sending the first message on the service cell of the terminal, including: the second candidate includes at least not sending the first message on the first service cell.

[0147] As an embodiment, the first time interval satisfies the first time length, which means that the first time interval is greater than the first time length; the first time interval does not satisfy the first time length, which means that the first time interval is not greater than the first time length.

[0148] As an embodiment, the first time interval satisfies the first time length, which means that the first time interval is not less than the first time length; the first time interval does not satisfy the first time length, which means that the first time interval is less than the first time length.

[0149] As an embodiment, the first time length is predicted.

[0150] As an embodiment, the first time length is configured by an RRC message.

[0151] As an embodiment, the first time length is predefined.

[0152] As an embodiment, the first time length depends on the output of the AI ​​module.

[0153] As an embodiment, the first time length is a Response Window.

[0154] As an embodiment, the first time length includes a typical value of the time required to successfully send the first message and successfully receive the second message.

[0155] As an embodiment, the first time length includes a typical value of the time required to schedule a request and successfully send the first message and successfully receive the second message.

[0156] As an embodiment, the first time interval is a time interval after the time when the wireless link failure is predicted.

[0157] As an embodiment, the first time interval is the time interval before the predicted time of radio link failure.

[0158] As an embodiment, the first time interval is the time interval between the predicted time of radio link failure and the predicted time of radio link failure.

[0159] As an embodiment, the first time interval is related to at least one of the time when the wireless link failure is predicted and the time when the wireless link failure is predicted, which means that: the first time interval is the time interval between the time when the wireless link failure is predicted and the time when the wireless link failure is predicted, or a time interval after the time when the wireless link failure is predicted, or a time interval before the time when the wireless link failure is predicted; wherein, the first time interval depends on the RRC message configuration.

[0160] As an embodiment, the first time interval satisfies the first time length, which means that the first time interval is not greater than the first time length; the first time interval does not satisfy the first time length, which means that the first time interval is greater than the first time length.

[0161] As an embodiment, the first time interval satisfies the first time length, which means that the first time interval is less than the first time length; the first time interval does not satisfy the first time length, which means that the first time interval is not less than the first time length.

[0162] As an embodiment, the first time interval satisfies the first time length, which means that the first time interval is not less than the first time length; the first time interval does not satisfy the first time length, which means that the first time interval is less than the first time length.

[0163] As an embodiment, the first time interval satisfies the first time length, which means that the first time interval is greater than the first time length; the first time interval does not satisfy the first time length, which means that the first time interval is not greater than the first time length.

[0164] As an embodiment, the length of the first time interval depends on the first message.

[0165] As an embodiment, the first time interval depends on the prediction result.

[0166] As a sub-embodiment of the above embodiment, the first time interval depends on the probability of occurrence of the possible radio link failure.

[0167] As a sub-embodiment of the above embodiment, the first time interval depends on a probability density function of the possible radio link failure.

[0168] As a sub-embodiment of the above embodiment, the first time interval depends on a cumulative distribution function of the possible radio link failure.

[0169] As a sub-embodiment of the above embodiment, the first time interval depends on the second threshold.

[0170] As a sub-embodiment of the above embodiment, the first time interval depends on the probability density function of the possible radio link failure and the second threshold.

[0171] As a sub-embodiment of the above embodiment, the first time interval depends on the cumulative distribution function of the possible radio link failure and the second threshold.

[0172] As a sub-embodiment of the above embodiment, within the first time interval, the probability of the possible wireless link failure is equal to the second threshold.

[0173] As a sub-embodiment of the above embodiment, within the first time interval, the integral of the probability density function of the possible wireless link failure over time is equal to the second threshold.

[0174] As a sub-embodiment of the above embodiment, for the cumulative distribution function of the probability of possible radio link failure, the function value corresponding to the end time of the first time interval is equal to the second threshold.

[0175] As a sub-embodiment of the above embodiment, for the cumulative distribution function of the probability of possible wireless link failure, the difference between the function value corresponding to the end time of the first time interval and the function value corresponding to the start time of the first time interval is equal to the second threshold.

[0176] As an embodiment, the target operation includes selecting the first candidate or the second candidate.

[0177] As an embodiment, whether the target operation is the first candidate or the second candidate depends on the predicted probability of occurrence of wireless link failure.

[0178] As a sub-embodiment of the above embodiment, if the first predicted probability of occurrence of the radio link failure is not lower than a third threshold, the target operation is the second candidate.

[0179] As a sub-embodiment of the above embodiment, if the first predicted probability of occurrence of the radio link failure is lower than a third threshold and higher than a second threshold, the target operation is a first candidate.

[0180] As a sub-embodiment of the above embodiment, if the first predicted probability of occurrence of the wireless link failure is lower than a second threshold, the target operation is not performed.

[0181] As a sub-embodiment of the above embodiment, the third threshold is preconfigured.

[0182] As a sub-embodiment of the above embodiment, the third threshold is predefined.

[0183] As a sub-embodiment of the above embodiment, the third threshold is fixed.

[0184] As a sub-embodiment of the above embodiment, the third threshold has a default value.

[0185] As a sub-embodiment of the above embodiment, the third threshold is higher than the second threshold.

[0186] As an embodiment, whether the target operation is the first candidate or the second candidate depends on a first time interval and a predicted probability of occurrence of a radio link failure.

[0187] As a sub-embodiment of the above embodiment, if the first time interval satisfies the first time length and the first predicted probability of occurrence of the radio link failure is not lower than the second threshold, the target operation is the first candidate.

[0188] As a sub-embodiment of the above embodiment, if the first time interval does not satisfy the first time length, and the first predicted probability of occurrence of the radio link failure is not lower than the second threshold, then the target operation is a second candidate.

[0189] As an embodiment, whether the target operation is the first candidate or the second candidate depends on the predicted probability of occurrence of the radio link failure within a first time interval.

[0190] As a sub-embodiment of the above embodiment, if within the first time interval, the first predicted probability of occurrence of the radio link failure is not lower than the third threshold, then the target operation is the second candidate.

[0191] As a sub-embodiment of the above embodiment, if within the first time interval, the first predicted probability of occurrence of the radio link failure is lower than the third threshold and higher than the second threshold, then the target operation is the first candidate.

[0192] As a sub-embodiment of the above embodiment, if within the first time interval, the first predicted probability of occurrence of the wireless link failure is lower than the second threshold, the target operation is not performed.

[0193] As an embodiment, whether the target operation is the first candidate or the second candidate depends on whether there is a suitable cell.

[0194] As a sub-embodiment of the above embodiment, when there is a suitable cell, the second candidate is executed.

[0195] As a sub-embodiment of the above embodiment, when there is no suitable cell, the first candidate is executed.

[0196] As an embodiment, whether the target operation is the first candidate or the second candidate depends on the predicted probability of occurrence of the radio link failure within the first time interval and whether there is a suitable cell.

[0197] As a sub-embodiment of the above embodiment, if within the first time interval, the predicted probability of occurrence of the radio link failure is not lower than the third threshold and there is a suitable cell, then the target operation is the second candidate.

[0198] As a sub-embodiment of the above embodiment, if within the first time interval, the predicted probability of occurrence of the radio link failure is lower than the third threshold and higher than the second threshold, or there is no suitable cell, then the target operation is the second candidate.

[0199] As a sub-embodiment of the above embodiment, if the predicted probability of occurrence of the wireless link failure within the first time interval is lower than the second threshold, the target operation is not performed.

[0200] As an embodiment, as an embodiment, whether the target operation is the first candidate or the second candidate depends on the first information.

[0201] As an embodiment, whether the target operation is the first candidate or the second candidate depends on the output of the AI ​​module.

[0202] As a sub-embodiment of the above embodiment, whether the target operation is the first candidate or the second candidate depends on the first information; and the first information depends on the output of the AI ​​module.

[0203] As an embodiment, whether the target operation is the first candidate or the second candidate depends on a probability density distribution function of the predicted radio link failure.

[0204] As an embodiment, whether the target operation is the first candidate or the second candidate depends on the first time interval.

[0205] As an embodiment, whether the target operation is the first candidate or the second candidate depends on the second threshold.

[0206] As an embodiment, whether the target operation is the first candidate or the second candidate depends on the third threshold.

[0207] As an embodiment, when the integral of the predicted probability density function of the wireless link failure over the first time interval is not less than the third threshold, the target operation is the second candidate.

[0208] As an embodiment, when the integral of the predicted probability density function of the wireless link failure over the first time interval is not less than the second threshold, the target operation is the first candidate.

[0209] As an embodiment, when the integral of the predicted probability density function of the wireless link failure over the first time interval is less than the third threshold and not less than the second threshold, the target operation is the second candidate.

[0210] As an embodiment, when the integral of the predicted probability density function of the wireless link failure over the first time interval is less than the second threshold, the target operation is not performed.

[0211] As an embodiment, whether the target operation is the first candidate or the second candidate depends on a cumulative distribution function of a predicted radio link failure probability.

[0212] As an embodiment, for the cumulative distribution function of the predicted wireless link failure probability, when the difference between the function value corresponding to the end time of the first time interval and the function value corresponding to the start time of the first time interval is not less than the third threshold, the target operation is the second candidate.

[0213] As an embodiment, for the cumulative distribution function of the predicted wireless link failure probability, when the difference between the function value corresponding to the end time of the first time interval and the function value corresponding to the start time of the first time interval is not less than the second threshold, the target operation is the first candidate.

[0214] As an embodiment, for the cumulative distribution function of the predicted wireless link failure probability, when the difference between the function value corresponding to the end time of the first time interval and the function value corresponding to the start time of the first time interval is less than the third threshold and not less than the second threshold, the target operation is the second candidate.

[0215] As an embodiment, for the cumulative distribution function of the predicted wireless link failure probability, when the difference between the function value corresponding to the end time of the first time interval and the function value corresponding to the start time of the first time interval is less than the third threshold, the target operation is not performed.

[0216] Example 2

[0217] Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the attached Figure 2 Attached Figure 2The network architecture 200 of a 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system is illustrated. The 5G NR / LTE / LTE-A network architecture 200 may be referred to as a 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable term. The 5GS / EPS 200 includes at least one of a UE (User Equipment) 201, a RAN (Radio Access Network) 202, a 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, a HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and an Internet service 230. The 5GS / EPS may be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, 5GS / EPS provides packet switching services, but it will be readily understood by those skilled in the art that the various concepts presented throughout this application can be extended to networks or other cellular networks that provide circuit switching services. RAN includes node 203 and other nodes 204. Node 203 provides user and control plane protocol termination towards UE 201. Node 203 can be connected to other nodes 204 via an Xn interface (e.g., backhaul) / X2 interface. Node 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (transmitting receiving node) or some other suitable terminology. Node 203 provides an access point to 5GC / EPC 210 for UE 201. Examples of UE 201 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine type communication devices, land vehicles, cars, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE 201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term.Node 203 is connected to 5GC / EPC210 via an S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF213. MME / AMF / SMF211 is a control node that handles signaling between UE201 and 5GC / EPC210. ​​In general, MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocal) packets are transmitted through S-GW / UPF212, which itself is connected to P-GW / UPF213. P-GW provides UE IP address allocation and other functions. P-GW / UPF213 is connected to Internet service 230. Internet service 230 includes operator-corresponding Internet protocol services, which may specifically include Internet, Intranet, IMS (IP Multimedia Subsystem) and packet-switched streaming services.

[0218] As an embodiment, the UE201 corresponds to the terminal in this application.

[0219] As an embodiment, the UE 201 is a user equipment (User Equipment, UE).

[0220] As an embodiment, the UE201 is a base station device (BaseStation, BS).

[0221] As an embodiment, the UE 201 is a relay device.

[0222] As an embodiment, the UE201 is a gateway device.

[0223] As an embodiment, the node 203 corresponds to the base station in this application.

[0224] As an embodiment, the node 203 is a base station device.

[0225] As an embodiment, the node 203 is a user equipment.

[0226] As an embodiment, the node 203 is a relay device.

[0227] As an embodiment, the node 203 is a gateway device.

[0228] Typically, the UE 201 is a user equipment, and the node 203 is a base station device.

[0229] Typically, the UE 201 is a user equipment, and the node 203 is a user equipment.

[0230] Typically, the UE 201 is a base station device, and the node 203 is a base station device.

[0231] As an embodiment, the user equipment supports transmission of a non-terrestrial network (NTN).

[0232] As an embodiment, the user equipment supports transmission of a terrestrial network (Terrestrial Network).

[0233] As an embodiment, the user equipment supports dual connection (DC) transmission.

[0234] As an embodiment, the user equipment includes an aircraft.

[0235] As an embodiment, the user equipment includes a vehicle-mounted terminal.

[0236] As an embodiment, the user equipment includes a vessel.

[0237] As an embodiment, the user equipment includes an Internet of Things terminal.

[0238] As an embodiment, the user equipment includes a terminal of the industrial Internet of Things.

[0239] As an embodiment, the user equipment includes a device supporting low-latency and high-reliability transmission.

[0240] As an embodiment, the user equipment includes a test device.

[0241] As an embodiment, the user equipment includes a signaling tester.

[0242] As an embodiment, the user equipment includes IAB (Integrated Access and Backhaul)-MT (Mobile Termination).

[0243] As an embodiment, the base station device supports transmission in a non-terrestrial network.

[0244] As an embodiment, the base station device supports transmission of a terrestrial network.

[0245] As an embodiment, the base station equipment includes a base transceiver station (Base Transceiver Station, BTS).

[0246] As an embodiment, the base station device includes a Node B (NodeB, NB).

[0247] As an embodiment, the base station device includes a gNB.

[0248] As an embodiment, the base station device includes an eNB.

[0249] As an embodiment, the base station device includes ng-eNB.

[0250] As an embodiment, the base station device includes en-gNB.

[0251] As an embodiment, the base station device includes a CU (Centralized Unit).

[0252] As an embodiment, the base station device includes a DU (Distributed Unit).

[0253] As an embodiment, the base station device includes a TRP (Transmitter Receiver Point).

[0254] As an embodiment, the base station device includes a macro cellular (Marco Cellular) base station.

[0255] As an embodiment, the base station device includes a micro cell base station.

[0256] As an embodiment, the base station device includes a pico cell (Pico Cell) base station.

[0257] As an embodiment, the base station device includes a home base station (Femtocell).

[0258] As an embodiment, the base station device includes a flying platform device.

[0259] As an embodiment, the base station device includes a satellite device.

[0260] As an embodiment, the base station device includes a testing device.

[0261] As an embodiment, the base station equipment includes a signaling tester.

[0262] As an embodiment, the base station device includes a gateway device.

[0263] As an embodiment, the base station device includes an IAB-node.

[0264] As an embodiment, the base station device includes an IAB-donor.

[0265] As an embodiment, the base station device includes an IAB-donor-CU.

[0266] As an embodiment, the base station device includes an IAB-donor-DU.

[0267] As an embodiment, the base station device includes an IAB-DU.

[0268] As an embodiment, the base station device includes IAB-MT.

[0269] As an embodiment, the relay device includes a relay.

[0270] As an embodiment, the relay device includes an L3 relay.

[0271] As an embodiment, the relay device includes an L2 relay.

[0272] As an embodiment, the relay device includes a router.

[0273] As an embodiment, the relay device includes a switch.

[0274] As an embodiment, the relay device includes a gateway device.

[0275] As an embodiment, the relay device includes user equipment.

[0276] As an embodiment, the relay device includes a base station device.

[0277] Example 3

[0278] Embodiment 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3 The radio protocol architecture for the control plane 300 is shown in three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to as PHY 301 in this article. Layer 2 (L2 layer) 305 is above PHY 301 and includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets, and provides inter-zone mobility support. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ (Hybrid Automatic Repeat Request). The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and using RRC signaling to configure the lower layers. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). In the user plane 350, the radio protocol architecture is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 also includes a SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS flows and data radio bearers (DRBs) to support service diversity.

[0279] As an example, Figure 3 The wireless protocol architecture in is applicable to the terminal described in this application.

[0280] As an example, Figure 3 The wireless protocol architecture in is applicable to the base station described in this application.

[0281] As an embodiment, the first message in the present application is generated in the RRC306.

[0282] As an embodiment, the first message in the present application is generated by the MAC302 or MAC352.

[0283] As an embodiment, the first message in the present application is generated by the PHY301 or PHY351.

[0284] As an embodiment, the second message in the present application is generated in the RRC306.

[0285] As an embodiment, the second message in the present application is generated by the MAC302 or MAC352.

[0286] As an embodiment, the second message in the present application is generated by the PHY301 or PHY351.

[0287] Example 4

[0288] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in the attached figure. Figure 4 shown. Figure 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0289] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454 and an antenna 452.

[0290] The second communication device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 and an antenna 420 .

[0291] In transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 layer. In transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0292] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

[0293] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0294] In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the reception function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 storing program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0295] As an embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor, and the first communication device 450 at least: performs a target operation in response to predicting a wireless link failure; wherein the candidates for the target operation include a first candidate and a second candidate; the first candidate includes sending a first message on a first service cell, and the second candidate does not include sending a first message on the first service cell; whether the target operation is the first candidate or the second candidate depends on at least a first time interval, and the first time interval is related to at least one of the time when the wireless link failure is predicted and the time when the wireless link failure is predicted; whether the target operation is the first candidate or the second candidate depends on the first time interval, including: when at least the first time interval meets the first time length, the target operation is the first candidate; when the first time interval does not meet the first time length, the target operation is the second candidate.

[0296] As an embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates an action when executed by at least one processor, and the action includes: performing a target operation in response to predicting a wireless link failure; wherein the candidates for the target operation include a first candidate and a second candidate; the first candidate includes sending a first message on a first service cell, and the second candidate does not include sending a first message on the first service cell; whether the target operation is the first candidate or the second candidate depends on at least a first time interval, and the first time interval is related to at least one of the time when the wireless link failure is predicted and the time when the wireless link failure is predicted; whether the target operation is the first candidate or the second candidate depends on the first time interval, including: when at least the first time interval meets the first time length, the target operation is the first candidate; when the first time interval does not meet the first time length, the target operation is the second candidate.

[0297] As an embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 410 at least: performs a target operation in response to predicting a radio link failure; wherein the candidates for the target operation include a first candidate and a second candidate; the first candidate includes receiving a first message on a first service cell, and the second candidate does not include receiving a first message on a service cell of the terminal; whether the target operation is the first candidate or the second candidate depends on at least a first time interval, and the first time interval is related to at least one of the time when the radio link failure is predicted and the time when the radio link failure is predicted; whether the target operation is the first candidate or the second candidate depends on the first time interval, including: when at least the first time interval meets the first time length, the target operation is the first candidate; when the first time interval does not meet the first time length, the target operation is the second candidate.

[0298] As an embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates an action when executed by at least one processor, the action including: performing a target operation in response to a predicted wireless link failure; wherein the candidates for the target operation include a first candidate and a second candidate; the first candidate includes receiving a first message on a first service cell, and the second candidate does not include receiving a first message on a service cell of the terminal; whether the target operation is the first candidate or the second candidate depends on at least a first time interval, and the first time interval is related to at least one of the time when the wireless link failure is predicted and the time when the wireless link failure is predicted; whether the target operation is the first candidate or the second candidate depends on the first time interval including: when at least the first time interval satisfies a first time length, the target operation is the first candidate; when the first time interval does not satisfy the first time length, the target operation is the second candidate.

[0299] As an embodiment, at least one of the antenna 452, the transmitter 454, the transmit processor 468, and the controller / processor 459 is used to send the first message.

[0300] As an embodiment, at least one of the antenna 420, the receiver 418, the receiving processor 470, and the controller / processor 475 is used to receive the first message.

[0301] As an embodiment, at least one of the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 is used to receive the second message.

[0302] As an embodiment, at least one of the antenna 420, the transmitter 418, the transmit processor 416, and the controller / processor 475 is used to send the second message.

[0303] As an embodiment, the first communication device 450 corresponds to the terminal in this application.

[0304] As an embodiment, the second communication device 410 corresponds to the base station in this application.

[0305] As an embodiment, the second communication device 410 corresponds to the third node in this application.

[0306] As an embodiment, the first communication device 450 is a user equipment.

[0307] As an embodiment, the first communication device 450 is a base station device.

[0308] As an embodiment, the first communication device 450 is a relay device.

[0309] As an embodiment, the second communication device 410 is a user equipment.

[0310] As an embodiment, the second communication device 410 is a base station device.

[0311] As an embodiment, the second communication device 410 is a relay device.

[0312] Example 5

[0313] Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 5 It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0314] for Terminal U01:

[0315] In step S5101, in response to predicting a radio link failure, a target operation is performed;

[0316] In step S5102, a first message is sent;

[0317] In step S5103, a first timer is started along with the first message;

[0318] In step S5104, receiving a second message;

[0319] In step S5105, in response to receiving the second message, stop the first timer;

[0320] In step S5106, it is determined that the wireless link fails;

[0321] In step S5107, the RRC connection is reestablished; the RRC connection reestablishment includes cell selection;

[0322] for Base station N02:

[0323] In step S5201, receiving the first message;

[0324] In step S5202, the second message is sent;

[0325] In Embodiment 5, the candidates for the target operation include a first candidate and a second candidate; the first candidate includes sending a first message on a first service cell, and the second candidate does not include sending a first message on a service cell of the terminal; the second message is received when the first timer runs.

[0326] As an embodiment, the target operation is the first candidate;

[0327] As an embodiment, the terminal U01 and the base station N02 are connected wirelessly.

[0328] As an embodiment, the terminal U01 and the base station N02 are connected via a wired connection.

[0329] As an embodiment, the terminal U01 and the base station N02 are connected via a Uu port.

[0330] As an embodiment, the terminal U01 and the base station N02 are connected via an IAB port.

[0331] As an embodiment, the terminal U01 and the base station N02 are connected via a PC5 interface.

[0332] As an embodiment, the dashed box F5.1 is optional.

[0333] As an embodiment, the dashed box F5.1 exists.

[0334] As an embodiment, the dotted box F5.1 does not exist.

[0335] As an embodiment, the dashed box F5.2 is optional.

[0336] As an embodiment, the dashed box F5.2 exists.

[0337] As an embodiment, the dotted box F5.2 does not exist.

[0338] As an embodiment, the dashed box F5.3 is optional.

[0339] As an embodiment, the dashed box F5.3 exists.

[0340] As an embodiment, the dotted box F5.3 does not exist.

[0341] As an embodiment, when the dotted box F5.1 does not exist, the dotted box F5.2 does not exist.

[0342] As an embodiment, when the dotted box F5.1 exists, the dotted box F5.2 exists.

[0343] As an embodiment, when the dotted box F5.1 exists, the dotted box F5.2 is optional.

[0344] As an embodiment, when the dotted box F5.1 exists or is optional, the dotted box F5.2 exists or is optional.

[0345] As an embodiment, the dotted box F5.1 exists, and the dotted box F5.3 does not exist.

[0346] As an embodiment, the dotted box F5.1 does not exist, and the dotted box F5.3 exists.

[0347] As an embodiment, the dotted box F5.1 and the dotted box F5.3 are optional.

[0348] As a sub-embodiment of the above embodiment, the dotted box F5.1 and the dotted box F5.3 do not exist at the same time.

[0349] As a sub-embodiment of the above embodiment, when the dotted box F5.1 exists, the dotted box F5.3 does not exist.

[0350] As a sub-embodiment of the above embodiment, when the dotted box F5.3 exists, the dotted box F5.1 does not exist.

[0351] As a sub-embodiment of the above embodiment, when the dotted box F5.1 exists, the dotted box F5.3 is optional.

[0352] As an embodiment, whether the dotted box F5.1 exists depends on whether the target operation is the first candidate.

[0353] As an embodiment, whether the dotted box F5.2 exists depends on whether the target operation is the first candidate.

[0354] As an embodiment, whether the dotted box F5.3 exists depends on whether the target operation is the second candidate.

[0355] As an embodiment, when the target operation is the first candidate, the dotted box F5.1 exists.

[0356] As an embodiment, when the target operation is the second candidate, the dotted box F5.1 does not exist.

[0357] As an embodiment, when the target operation is the second candidate, the dotted box F5.3 exists.

[0358] As an embodiment, the first message is sent via SRB1.

[0359] As an embodiment, the first message is sent via any one of SRB1 or SRB3.

[0360] As an embodiment, the first message is sent via SRB1 or SRB3 or any one of the non-direct paths.

[0361] As an embodiment, in response to expiration of the first timer, RRC connection re-establishment is performed.

[0362] As an embodiment, in response to expiration of the first timer, a wireless link failure is determined.

[0363] As an embodiment, in response to expiration of the first timer, the RRC_IDLE state is entered.

[0364] As an embodiment, in response to expiration of the first timer, the RRC_INACTIVE state is entered.

[0365] As an embodiment, the second candidate is executed in response to expiration of the first timer.

[0366] As an embodiment, the first message is resent in response to expiration of the first timer.

[0367] As a sub-embodiment of the above embodiment, when the first timer expires and no wireless link failure occurs, the first message is resent.

[0368] As a sub-embodiment of the above embodiment, the resending the first message refers to retransmitting the first message.

[0369] As a sub-embodiment of the above embodiment, the resending the first message refers to updating the first message and resending the first message.

[0370] As a sub-embodiment of the above embodiment, the updating of the first message depends on the output of the AI ​​module.

[0371] As an embodiment, the first timer is a Response Window.

[0372] As an embodiment, the first timer is a T300 timer.

[0373] As an embodiment, the value of the first timer depends on the first time length.

[0374] As an embodiment, the first timer depends on the first information.

[0375] As a sub-embodiment of the above embodiment, the first timer is started as a response to sending the first message.

[0376] As a sub-embodiment of the above embodiment, the value of the first timer depends on the first message.

[0377] As an embodiment, the first timer is started or restarted along with the sending of the first message.

[0378] As an embodiment, the first message is sent along with starting or restarting the first timer.

[0379] As an embodiment, starting the first timer along with the first message means: starting or restarting the first timer along with the successful sending of the first message.

[0380] As an embodiment, starting the first timer along with the first message means: starting or restarting the first timer when the first message is sent completely.

[0381] As an embodiment, when the first timer is running, the first timer is stopped in response to a radio link failure.

[0382] As an embodiment, when the first timer is running, the second candidate is executed in response to a radio link failure.

[0383] As an embodiment, while the first timer is running, the first UE variable is stored or updated in response to a radio link failure.

[0384] As a sub-embodiment of the above embodiment, the storing or updating the first UE variable refers to: using all or part of the fields in the first message to update or store as the first UE variable.

[0385] As a sub-embodiment of the above embodiment, the first UE variable indicates the ModelID of the AI ​​module.

[0386] As a sub-embodiment of the above embodiment, the first variable includes the first message, and the first message indicates the Model ID of the AI ​​module.

[0387] As a sub-embodiment of the above embodiment, the first candidate includes: when the first timer is running, as a response to a radio link failure, storing or updating the first UE variable.

[0388] As an embodiment, in response to the first timer being running, the determination of the radio link failure is not made.

[0389] As an embodiment, in response to the first timer not being running, the determination of the radio link failure is initiated.

[0390] As an embodiment, in response to the first timer being running, determination of the radio link failure is not allowed.

[0391] As an embodiment, determination of radio link failure is enabled in response to the first timer not being running.

[0392] As an embodiment, a second timer is started in response to receiving the second message.

[0393] As an embodiment, the second message is received on the first serving cell.

[0394] As an embodiment, the second message is an RRC reconfiguration message.

[0395] As an embodiment, the second message is a switching command.

[0396] As a sub-embodiment of the above embodiment, the second message is an L3 switching configuration.

[0397] As a sub-embodiment of the above embodiment, the second message is a conditional switching configuration.

[0398] As a sub-embodiment of the above embodiment, the second message is an LTM cell switching configuration.

[0399] As a sub-embodiment of the above embodiment, the second timer is a T304 timer.

[0400] As an embodiment, the second message is an RRC connection reconstruction message.

[0401] As an embodiment, the second message is an RRCReestablishment message.

[0402] As a sub-embodiment of the above embodiment, the first message is an RRCReestablishmentRequest message.

[0403] As a sub-embodiment of the above embodiment, the first timer is a T301 timer.

[0404] As a sub-embodiment of the above embodiment, the second timer is a T311 timer.

[0405] As an embodiment, the second message is an RRC release message.

[0406] As an embodiment, the second message is a RRCRelease message.

[0407] As a sub-embodiment of the above embodiment, the first message is a measurement report.

[0408] As a sub-embodiment of the above embodiment, the first message is a forecast report.

[0409] As a sub-embodiment of the above embodiment, the first message includes a measurement result.

[0410] As a sub-embodiment of the above embodiment, the first message includes a prediction result.

[0411] As a sub-embodiment of the above embodiment, the second timer is a T380 timer.

[0412] As an embodiment, the second message is an RRC reject message.

[0413] As an embodiment, the second message is an RRCReject message.

[0414] As a sub-embodiment of the above embodiment, the first message is an RRCSetupRequest message.

[0415] As a sub-embodiment of the above embodiment, the first timer is a T300 timer.

[0416] As a sub-embodiment of the above embodiment, the second timer is a T302 timer.

[0417] As a sub-embodiment of the above embodiment, the second timer is a T325 timer.

[0418] As a sub-embodiment of the above embodiment, the second timer is a T331 timer.

[0419] As an embodiment, in response to receiving the second message, the first timer is stopped.

[0420] Example 6

[0421] Embodiment 6 illustrates a schematic diagram of the relationship between the target operation and the wireless link failure monitoring parameter according to an embodiment of the present application, as shown in the attached figure. Figure 6 shown.

[0422] In embodiment 6, whether the target operation is the first candidate or the second candidate depends on the state of a radio link failure monitoring parameter; the radio link failure monitoring parameter is used to determine radio link failure.

[0423] As an embodiment, whether the target operation is the first candidate or the second candidate depends on the first time interval and whether the target operation is the first candidate or the second candidate depends on the state of the radio link failure monitoring parameter.

[0424] As an embodiment, whether the target operation is the first candidate or the second candidate depends on the first time interval and whether the target operation is the first candidate or the second candidate depends on the state of the radio link failure monitoring parameter refers to:

[0425] When at least the first time interval satisfies the first time length and the state of the radio link failure monitoring parameter satisfies the first threshold, the target operation is the first candidate;

[0426] When the first time interval does not satisfy the first time length or the state of the radio link failure monitoring parameter does not satisfy the first threshold, the target operation is the second candidate.

[0427] As an embodiment, whether the target operation is the first candidate or the second candidate depends on the first time interval and whether the target operation is the first candidate or the second candidate depends on the state of the radio link failure monitoring parameter refers to:

[0428] When at least the first time interval satisfies the first time length and the state of the radio link failure monitoring parameter satisfies the first threshold, the target operation is the first candidate;

[0429] When the first time interval does not satisfy the first time length or the state of the radio link failure monitoring parameter satisfies the first threshold or it is determined that the radio link fails, the target operation is the second candidate.

[0430] As an embodiment, the first threshold is preconfigured.

[0431] As an embodiment, the first threshold is configured by RRC message.

[0432] As a sub-embodiment of the above embodiment, the first RRC message configures the value of the first threshold.

[0433] As a sub-embodiment of the above embodiment, the first RRC message configures a first coefficient, and the first threshold depends on the first coefficient.

[0434] As an embodiment, the first threshold depends on the output of the AI ​​module.

[0435] As an embodiment, as a response to determining that the radio link has failed, a first field in a first UE variable is set.

[0436] As a sub-embodiment of the above embodiment, the first UE variable is VarRLF-Report.

[0437] As a sub-embodiment of the above embodiment, the first UE variable is rlf-Report.

[0438] As a sub-embodiment of the above embodiment, the first domain is rlf-Cause.

[0439] As an embodiment, the radio link failure monitoring parameter is T310; the state of the radio link failure monitoring parameter is the current value of T310.

[0440] As a sub-embodiment of the above embodiment, the state of the radio link failure monitoring parameter satisfies the first threshold value, which means that the current value of T310 is greater than the first threshold value.

[0441] As a sub-embodiment of the above embodiment, the state of the radio link failure monitoring parameter satisfies the first threshold value, which means that the current value of T310 is not less than the first threshold value.

[0442] As a sub-embodiment of the above embodiment, in response to determining that the radio link fails, the first field is set to t310-Expiry.

[0443] As a sub-embodiment of the above embodiment, the first threshold is the maximum value of T310.

[0444] As a sub-embodiment of the above embodiment, the first threshold is equal to the product of the maximum value of T310 and the first coefficient.

[0445] As an embodiment, the radio link failure monitoring parameter is T312; the state of the radio link failure monitoring parameter is the current value of T312.

[0446] As a sub-embodiment of the above embodiment, the state of the radio link failure monitoring parameter satisfies the first threshold value, which means that the current value of T312 is greater than the first threshold value.

[0447] As a sub-embodiment of the above embodiment, the state of the radio link failure monitoring parameter satisfies the first threshold value, which means that the current value of T312 is not less than the first threshold value.

[0448] As a sub-embodiment of the above embodiment, in response to determining that the radio link fails, the first field is set to t312-Expiry.

[0449] As a sub-embodiment of the above embodiment, the first threshold is the maximum value of T312.

[0450] As a sub-embodiment of the above embodiment, the first threshold is equal to the product of the maximum value of T312 and the first coefficient.

[0451] As an embodiment, the radio link failure monitoring parameter is PREAMBLE_POWER_RAMPING_COUNTER; and the state of the radio link failure monitoring parameter is the current value of the PREAMBLE_POWER_RAMPING_COUNTER.

[0452] As a sub-embodiment of the above embodiment, the state of the radio link failure monitoring parameter satisfies the first threshold value, which means that the current value of the PREAMBLE_POWER_RAMPING_COUNTER is less than the first threshold value.

[0453] As a sub-embodiment of the above embodiment, the state of the radio link failure monitoring parameter satisfies the first threshold value, which means that the current value of the PREAMBLE_POWER_RAMPING_COUNTER is not greater than the first threshold value.

[0454] As a sub-embodiment of the above embodiment, in response to determining that the radio link fails, the first domain is set to randomAccessProblem.

[0455] As a sub-embodiment of the above embodiment, the first threshold is preambleTransMax+1.

[0456] As a sub-embodiment of the above embodiment, the first threshold is preambleTransMax.

[0457] As a sub-embodiment of the above embodiment, the first threshold is equal to the product of the preambleTransMax+1 and the first coefficient.

[0458] As a sub-embodiment of the above embodiment, the first threshold is equal to the product of the preambleTransMax and the first coefficient.

[0459] As an embodiment, the radio link failure monitoring parameter is RETX_COUNT; the state of the radio link failure monitoring parameter is the current value of the RETX_COUNT.

[0460] As a sub-embodiment of the above embodiment, the state of the radio link failure monitoring parameter satisfies the first threshold value, which means that the current value of the RETX_COUNT is less than the first threshold value.

[0461] As a sub-embodiment of the above embodiment, the state of the radio link failure monitoring parameter satisfies the first threshold value, which means that the current value of the RETX_COUNT is not greater than the first threshold value.

[0462] As a sub-embodiment of the above embodiment, in response to determining that the radio link fails, the first field is set to rlc-MaxNumRetx.

[0463] As a sub-embodiment of the above embodiment, the first threshold is maxRetxThreshold.

[0464] As a sub-embodiment of the above embodiment, the first threshold is equal to the product of the maxRetxThreshold and the first coefficient.

[0465] Example 7

[0466] Embodiment 7 illustrates a schematic diagram of the second candidate according to an embodiment of the present application, as shown in the attached Figure 7 shown.

[0467] In Embodiment 7, the second candidate includes RRC connection reestablishment; and the RRC connection reestablishment includes cell selection.

[0468] As an embodiment, the second candidate includes RRC connection reestablishment, and the RRC connection reestablishment includes the cell selection.

[0469] As an embodiment, the second candidate includes initiating the RRC connection re-establishment.

[0470] As a sub-embodiment of the above embodiment, the initiating RRC connection re-establishment includes: if the T310 timer is running, stopping the T310 timer.

[0471] As a sub-embodiment of the above embodiment, the initiating RRC connection re-establishment includes: if the T312 timer is running, stopping the T312 timer.

[0472] As a sub-embodiment of the above embodiment, the initiating RRC connection re-establishment includes: if the T304 timer is running, stopping the T304 timer.

[0473] As a sub-embodiment of the above embodiment, the initiating RRC connection re-establishment includes: starting a T311 timer.

[0474] As a sub-embodiment of the above embodiment, the initiating RRC connection re-establishment includes: if the T316 timer is running, stopping the T316 timer.

[0475] As a sub-embodiment of the above embodiment, the initiating RRC connection re-establishment includes resetting MAC.

[0476] As a sub-embodiment of the above embodiment, the initiating RRC connection re-establishment includes releasing the spCellConfig configuration.

[0477] As a sub-embodiment of the above embodiment, the initiating RRC connection re-establishment includes suspending all RBs except SRB0 and broadcast MRB.

[0478] As a sub-embodiment of the above embodiment, the initiating RRC connection re-establishment includes performing cell selection.

[0479] As an embodiment, if the T311 timer is running, as a response to successfully selecting a suitable cell in cell selection, preparing to interact with the suitable cell.

[0480] As a sub-embodiment of the above embodiment, the preparing to interact with a suitable cell includes: ensuring to have valid and latest system information of the suitable cell.

[0481] As a sub-embodiment of the above embodiment, the preparing to interact with a suitable cell includes: stopping the T311 timer,

[0482] As a sub-embodiment of the above embodiment, the preparation for interacting with a suitable cell includes: starting a T301 timer.

[0483] As a sub-embodiment of the above embodiment, the preparation for interacting with a suitable cell includes: unless the parameters are provided in SIB1, applying the default L1 parameters of the physical layer.

[0484] As a sub-embodiment of the above embodiment, the preparation for interacting with a suitable cell includes: applying a default MAC cell group configuration.

[0485] As a sub-embodiment of the above embodiment, the preparation for interacting with a suitable cell includes: applying CCCH configuration.

[0486] As a sub-embodiment of the above embodiment, the preparation for interacting with a suitable cell includes: applying timeAlignmentTimerCommon in SIB1.

[0487] As a sub-embodiment of the above embodiment, the preparation for interacting with a suitable cell includes: preparing to initiate transmission of an RRCReestablishmentRequest message.

[0488] As an embodiment, if the T311 timer is not running and no suitable cell is selected in the cell selection, noSuitableCellFound in VarRLF-Report is set to true, and relevant operations for entering the RRC_IDLE state are performed.

[0489] As an embodiment, as an embodiment, the RRC reestablishment includes the transmission of an RRCReestablishmentRequest message; the transmission of the RRCReestablishmentRequest message includes setting the content of the RRCReestablishmentRequest message.

[0490] As a sub-embodiment of the above embodiment, the c-RNTI in ue-Identify is set to the C-RNTI used in the first serving cell.

[0491] As a sub-embodiment of the above embodiment, the physCellId in ue-Identify is set to the physical cell ID of the first serving cell.

[0492] As a sub-embodiment of the above embodiment, the setting of the RRCReestablishmentRequest message includes setting reestablishmentCause to otherFailure.

[0493] As a sub-embodiment of the above embodiment, the PDCP of SRB1 is re-established.

[0494] As a sub-embodiment of the above embodiment, the transmission of the RRCReestablishmentRequest message includes submitting the RRCReestablishmentRequest message to a lower layer.

[0495] As an embodiment, the RRC connection reestablishment includes: receiving an RRCReestablishment message as a response to sending the RRCReestablishmentRequest message.

[0496] As a sub-embodiment of the above embodiment, as a response to receiving the RRCReestablishment message, the T301 timer is stopped.

[0497] As a sub-embodiment of the above embodiment, in response to receiving the RRCReestablishment message, the current cell is considered to be a PCell.

[0498] As a sub-embodiment of the above embodiment, KgNB is updated in response to receiving the RRCReestablishment message.

[0499] As a sub-embodiment of the above embodiment, as a response to receiving the RRCReestablishment message, prepare for transmission of an RRCReestablishmentComplete message.

[0500] As a sub-embodiment of the above embodiment, in response to receiving the RRCReestablishment message, an RRCReestablishmentComplete message is delivered to a lower layer.

[0501] Example 8

[0502] Embodiment 8 illustrates a schematic diagram of a first candidate and a second candidate according to an embodiment of the present application, as shown in the attached figure. Figure 8 shown.

[0503] In Embodiment 8, the first candidate does not include determining a radio link failure, and the second candidate includes determining a radio link failure.

[0504] As an embodiment, the determination of radio link failure is: considering that the MCG is detected as RLF.

[0505] As an embodiment, the first candidate does not include determining a radio link failure, and the first candidate includes sending the first message; the second candidate includes determining a radio link failure, and the second candidate includes cell selection.

[0506] As an embodiment, the first candidate does not include determining a radio link failure, and the first candidate includes sending the first message; the second candidate includes determining a radio link failure, and the second candidate includes RRC re-establishment.

[0507] As an embodiment, the first candidate does not include determining a radio link failure, and the first candidate includes sending the first message; the second candidate includes determining a radio link failure, and the second candidate includes RRC re-establishment and the cell selection.

[0508] As an embodiment, the first candidate includes sending the first message, and before the first message is sent, it is not determined that the wireless link fails.

[0509] As an embodiment, the first candidate includes sending the first message when no wireless link failure occurs.

[0510] As a sub-embodiment of the above embodiment, as receiving the second message, continuing the wireless link failure monitoring parameter

[0511] As an embodiment, the second candidate includes determining radio link failure and the cell selection.

[0512] As an embodiment, the second candidate includes determining radio link failure, RRC connection re-establishment and the cell selection.

[0513] As an embodiment, the second candidate includes determining radio link failure and RRC connection re-establishment, and the RRC connection re-establishment includes the cell selection.

[0514] As an embodiment, the second candidate includes not sending the first message in response to determining that the radio link has failed.

[0515] As an embodiment, the second candidate includes continuing the current operation.

[0516] As an embodiment, in response to successfully sending the first message, the radio link failure monitoring parameters are suspended.

[0517] As an embodiment, the first candidate not including determination of radio link failure means that: as a response to executing the first candidate, determination of radio link failure is not performed.

[0518] As an embodiment, the first candidate not including determining the radio link failure means: as a response to executing the first candidate, suspending the monitoring of the relevant parameters of the radio link failure.

[0519] As an embodiment, the second candidate includes determining that the radio link fails, which means that as a response to executing the second candidate, determining that the radio link fails is performed.

[0520] As an embodiment, the second candidate includes determining that the radio link fails, which means: as a response to executing the second candidate, continuously monitoring the parameters of the radio link failure.

[0521] As an embodiment, the second candidate includes determining that the radio link failure means: as a response to executing the second candidate, allowing triggering of a possible radio link failure.

[0522] As an embodiment, the suspension of monitoring of the relevant parameters of the wireless link failure refers to: stopping the relevant timer.

[0523] As a sub-embodiment of the above embodiment, the suspending the monitoring of the relevant parameters of the radio link failure refers to: stopping the T310 timer.

[0524] As a sub-embodiment of the above embodiment, the suspension of monitoring of the relevant parameters of the radio link failure refers to: stopping the T312 timer.

[0525] As an embodiment, the suspending the monitoring of the relevant parameters of the wireless link failure refers to: resetting the relevant parameters.

[0526] As a sub-embodiment of the above embodiment, the suspension of monitoring of the relevant parameters of the radio link failure refers to: MAC reset.

[0527] As a sub-embodiment of the above embodiment, the suspension of monitoring of the relevant parameters of the radio link failure refers to: resetting the N311 counter.

[0528] As a sub-embodiment of the above embodiment, the suspension of monitoring of the relevant parameters of the radio link failure refers to: maintaining the value of the N311 counter.

[0529] Example 9

[0530] Embodiment 9 illustrates another schematic diagram of the first candidate and the second candidate according to another embodiment of the present application, as shown in the attached figure. Fig. 9 shown.

[0531] In Embodiment 9, neither the first candidate nor the second candidate includes determining a radio link failure.

[0532] As an embodiment, the first candidate includes sending the first message; the second candidate does not include sending the first message.

[0533] As an embodiment, the first candidate not including the determination of the radio link failure means that: as a response to sending the first message, the determination of the radio link failure is not performed.

[0534] As an embodiment, the second candidate does not include the determination of the radio link failure, which means that the second candidate does not include sending the first message and does not include the determination of the radio link failure.

[0535] As an embodiment, the fact that neither the first candidate nor the second candidate includes the determination of radio link failure means that the undetermined radio link failure is a prerequisite for the first candidate and the second candidate.

[0536] As an embodiment, within a time interval between the prediction of the radio link failure and the sending of the first message, the terminal does not determine that the radio link has failed; and the target operation is the first candidate.

[0537] As an embodiment, within a time interval from the prediction of the radio link failure to the cell selection, the terminal does not determine the radio link failure; and the target operation is the second candidate.

[0538] As an embodiment, when at least the first time interval satisfies a first time length and the terminal has not determined that the radio link has failed, the target operation is the first candidate;

[0539] As an embodiment, when at least the first time interval does not satisfy a first time length and the terminal has not determined that the radio link has failed, the target operation is the second candidate;

[0540] As an embodiment, if a wireless link failure occurs, the first candidate and the second candidate are not executed.

[0541] Example 10

[0542] Embodiment 10 illustrates a structural block diagram of a processing device used in a terminal according to an embodiment of the present application; Fig.10 As shown in the attached Fig.10 In the embodiment, the terminal 1000 includes a first transmitter 1001 and a first processor 1002.

[0543] The first processor 1002 performs a target operation in response to predicting a radio link failure; wherein the candidates for the target operation include a first candidate and a second candidate; the first candidate includes sending a first message on a first serving cell, and the second candidate does not include sending the first message on the first serving cell;

[0544] In embodiment 10, whether the target operation is the first candidate or the second candidate depends on at least a first time interval, and the first time interval is related to at least one of the time when the radio link failure is predicted and the time when the radio link failure is predicted;

[0545] Whether the target operation is the first candidate or the second candidate depends on the first time interval and includes:

[0546] When at least the first time interval satisfies a first time length, the target operation is the first candidate;

[0547] When the first time interval does not satisfy a first time length, the target operation is the second candidate.

[0548] As an embodiment, the first transmitter 1001 sends the first message on the first serving cell; wherein the target operation is the first candidate.

[0549] As an embodiment, the first processor 1002 includes a first receiver.

[0550] As an embodiment, whether the target operation is the first candidate or the second candidate depends on the state of a radio link failure monitoring parameter; the radio link failure monitoring parameter is used to determine radio link failure.

[0551] As an embodiment, the second candidate includes RRC connection reestablishment; the RRC connection reestablishment includes cell selection.

[0552] As an embodiment, the first candidate does not include determining a radio link failure, and the second candidate includes determining a radio link failure.

[0553] As an embodiment, neither the first candidate nor the second candidate includes determining that the radio link fails.

[0554] As an embodiment, the first processor 1002 starts a first timer along with the first message; stops the first timer in response to receiving a second message; wherein the target operation is the first candidate; and the second message is received while the first timer is running.

[0555] As an embodiment, the terminal includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the terminal to execute the method described in the present application that is used for the terminal.

[0556] As an embodiment, the first receiver includes the attached Figure 4 At least one of the antenna 452 or the receiver 454 or the multi-antenna receive processor 458 or the receive processor 456 or the controller / processor 459 or the memory 460 or the data source 467.

[0557] As an embodiment, the first receiver includes the attached Figure 4 At least an antenna 452 and a receiver 454.

[0558] As an embodiment, the first transmitter 1001 includes the attached Figure 4 At least one of the antenna 452 or the transmitter 454 or the multi-antenna transmit processor 457 or the transmit processor 468 or the controller / processor 459 or the memory 460 or the data source 467.

[0559] As an embodiment, the first transmitter 1001 includes the attached Figure 4 At least antenna 452 and transmitter 454.

[0560] Embodiment 11

[0561] Embodiment 11 illustrates a structural block diagram of a processing device used in a base station according to an embodiment of the present application; Fig.11 As shown in the attached Fig.11 In the embodiment, the base station 1100 includes a second transmitter 1101 and a second receiver 1102.

[0562] A second receiver 1102 receives a first message;

[0563] In embodiment 11, as a response to the sender of the first message predicting a wireless link failure, the sender of the first message performs a target operation; the candidates for the target operation include a first candidate and a second candidate; the first candidate includes sending the first message on a first service cell, and the second candidate does not include sending the first message on a service cell of the terminal; whether the target operation is the first candidate or the second candidate depends on at least a first time interval, and the first time interval is related to at least one of the time when the wireless link failure is predicted and the time when the wireless link failure is predicted; whether the target operation is the first candidate or the second candidate depends on the first time interval, including: when at least the first time interval meets the first time length, the target operation is the first candidate; when the first time interval does not meet the first time length, the target operation is the second candidate.

[0564] As an embodiment, whether the target operation is the first candidate or the second candidate depends on the state of a radio link failure monitoring parameter; the radio link failure monitoring parameter is used to determine radio link failure.

[0565] As an embodiment, the second candidate includes RRC connection reestablishment; the RRC connection reestablishment includes cell selection.

[0566] As an embodiment, the first candidate does not include determining a radio link failure, and the second candidate includes determining a radio link failure.

[0567] As an embodiment, neither the first candidate nor the second candidate includes determining that the radio link fails.

[0568] As an embodiment, along with the first message, the sender of the first message starts a first timer; as a response to sending the second message, the sender of the first message stops the first timer; the target operation is the first candidate; the second message is sent while the first timer is running.

[0569] As an embodiment, the base station includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the base station to execute the method described in the present application that is used for the base station.

[0570] As an embodiment, the second transmitter 1101 includes the attached Figure 4At least one of the antenna 420 or the transmitter 418 or the multi-antenna transmit processor 471 or the transmit processor 416 or the controller / processor 475 or the memory 476.

[0571] As an embodiment, the second transmitter 1101 includes the attached Figure 4 At least antenna 420 and transmitter 418.

[0572] As an embodiment, the second receiver 1102 includes the attached Figure 4 At least one of the antenna 420 or the receiver 418 or the multi-antenna reception processor 472 or the reception processor 470 or the controller / processor 475 or the memory 476.

[0573] As an embodiment, the second receiver 1102 includes the attached Figure 4 At least an antenna 420 and a receiver 418.

[0574] Example 12

[0575] Embodiment 12 illustrates a schematic diagram of a processing system based on artificial intelligence or machine learning according to an embodiment of the present application, as shown in the attached Fig.12 Attached Fig.12 It includes a first module, a second module, a third module, a fourth module and a fifth module.

[0576] In Example 12, the first module sends a first data set to the second module, the first module sends a second data set to the third module, the first module sends a third data set to the fifth module, the fifth module sends a first type of parameter group to the second module, the fifth module sends a second type of parameter group to the third module, the fifth module sends a third type of parameter group to the fourth module, the second module sends a fourth type of parameter group to the fourth module, and the fourth module sends a fifth type of parameter group to the third module.

[0577] As an embodiment, the first module, the second module, the third module, the fourth module and the fifth module all belong to the terminal.

[0578] The above method avoids air interface signaling interaction and shortens transmission delay.

[0579] As an embodiment, any one of the first module, the second module, the third module, the fourth module and the fifth module does not belong to the terminal.

[0580] The above method reduces the hardware complexity of the terminal.

[0581] As an embodiment, at least the first module among the first module, the second module, the third module, the fourth module and the fifth module belongs to the terminal; and at least one module among the first module, the second module, the third module, the fourth module and the fifth module does not belong to the terminal.

[0582] The above method balances the hardware complexity and transmission delay of the terminal.

[0583] As an embodiment, the first module is used for data collection.

[0584] As an embodiment, the first module is responsible for data collection.

[0585] As an embodiment, the first module has a data collection function.

[0586] As an embodiment, the second module is used for model training (Model Training).

[0587] As an embodiment, the second module is responsible for model training.

[0588] As an embodiment, the second module has a model training function.

[0589] As an embodiment, the second module performs AI / ML model training.

[0590] As an embodiment, the second module performs validation.

[0591] As an embodiment, the second module performs testing.

[0592] As an embodiment, the second module generates model performance metrics.

[0593] As an embodiment, the second module is responsible for data preparation.

[0594] As an embodiment, the data preparation includes at least one of data pre-processing, cleaning, formatting, or transformation.

[0595] As an embodiment, the third module is used for inference.

[0596] As an embodiment, the third module has a reasoning function.

[0597] As an embodiment, the third module is responsible for reasoning.

[0598] As an embodiment, the fourth module is used for model storage (Model Storage).

[0599] As an embodiment, the fourth module has a model storage (Model Storage) function.

[0600] As an embodiment, the fourth module is responsible for storing the trained model.

[0601] As an embodiment, the fourth module is responsible for storing the trained model that can be used to perform reasoning processing.

[0602] As an embodiment, the fifth module is used for management.

[0603] As an embodiment, the fifth module is responsible for management.

[0604] As an embodiment, the fifth module has a management function.

[0605] As an embodiment, the first data set is training data (Training Data).

[0606] As an embodiment, the second data set is inference data.

[0607] As an embodiment, the third data set is monitoring data.

[0608] As an embodiment, the first parameter group includes monitoring output.

[0609] As an embodiment, the second type of parameter group includes management instructions.

[0610] As an embodiment, the second type of parameter group is used for fine-tuning operation of the inference function.

[0611] As an embodiment, the second parameter group includes an identifier of the model.

[0612] As an embodiment, the second type of parameter group is used to select a model.

[0613] As an embodiment, the second type of parameter group is used for switching models.

[0614] As an embodiment, the second type of parameter group is used to activate / deactivate the model.

[0615] As an embodiment, the second type of parameter group is used to fall back from AI-ML operation to non-AI-ML operation.

[0616] As an embodiment, the third type of parameter group includes a model transfer request (Model Transfer Request).

[0617] As an embodiment, the third parameter group includes a model delivery request (Model DeliveryRequest).

[0618] As an embodiment, the fourth parameter group includes a trained model (Trained Model).

[0619] As an embodiment, the fourth parameter group includes an updated model (Updated Model).

[0620] As an embodiment, the fourth type of parameter group indicates the identification of the model.

[0621] As an embodiment, the fifth parameter group includes model transfer.

[0622] As an embodiment, the fifth parameter group includes model delivery.

[0623] As an embodiment, the fifth type of parameter group indicates the identification of the model.

[0624] As an embodiment, the first type of output includes a monitoring output.

[0625] As an embodiment, the first type of output exists.

[0626] As an embodiment, the first type of output does not exist.

[0627] As an embodiment, the second type of output includes inference output.

[0628] As an embodiment, the second type of output is used by the fifth module to monitor the performance of the AI / ML model.

[0629] As an embodiment, the second type of output is used by the fifth module to monitor the performance of the AI / ML function.

[0630] As an embodiment, the second type of output exists.

[0631] As an embodiment, the second type of output does not exist.

[0632] As an embodiment, the artificial intelligence processing system generates or assists in generating the first message or an update of the first message or the first threshold or the prediction result or the predicted probability density distribution function of the wireless link failure or the predicted cumulative distribution function of the probability of wireless link failure or the first time length or a judgment as to whether the target operation is the first candidate or the second candidate.

[0633] As an embodiment, the fifth module generates or assists in generating the first message or an update of the first message or the first threshold or the prediction result or the predicted probability density distribution function of the wireless link failure or the predicted cumulative distribution function of the probability of wireless link failure or the first time length or a judgment as to whether the target operation is the first candidate or the second candidate.

[0634] As an embodiment, the third module generates or assists in generating the first message or an update of the first message or the first threshold or the prediction result or the predicted probability density distribution function of the wireless link failure or the predicted cumulative distribution function of the probability of wireless link failure or the first time length or a judgment as to whether the target operation is the first candidate or the second candidate.

[0635] As an embodiment, the second type of output includes the first message or an update of the first message or the first threshold or the prediction result or the predicted probability density distribution function of the wireless link failure or the predicted cumulative distribution function of the probability of wireless link failure or the first time length or a judgment as to whether the target operation is the first candidate or the second candidate.

[0636] As an embodiment, at least one of the first data set or the second data set includes the measurement result.

[0637] As an embodiment, at least one of the first data set or the second data set includes the first UE variable.

[0638] As an embodiment, at least one of the first data set or the second data set includes the first message.

[0639] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the measurement result.

[0640] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the first UE variable.

[0641] As an embodiment, at least one of the first data set, the second data set, or the third data set includes the first message.

[0642] As an embodiment, the embodiment 12 is only used to illustrate that the present application can be used in an artificial intelligence processing system. The embodiment does not limit the application of the present application to a non-artificial intelligence processing system, and the embodiment does not limit the application of the present application to other types of artificial intelligence processing systems to obtain and attach Fig.12 The artificial intelligence processing system shown has comparable effects.

[0643] Example 13

[0644] Embodiment 13 illustrates a schematic diagram of RAN (Radio Access Network) domain (Domain) AI / ML function deployment according to an embodiment of the present application; as shown in the attached Fig.13 As shown. The gNB in ​​Example 13 can be replaced by network equipment such as eNB or 6G base station.

[0645] AI / ML related functions include ML training function (also called AI training, or AI / ML training), ML testing function, ML reasoning (also called AI reasoning, or AI / ML reasoning) function, etc. ML training function, ML testing function, and ML reasoning function can be deployed independently or co-located. The deployment of AI / ML related functions can be achieved through software, such as downloading and / or running executable files; it can also be achieved through a combination of software and hardware, such as accelerating specific computing units through hardware to increase computing speed or save power consumption.

[0646] For ML training functions, they can be deployed in a cross-domain management system or a domain-specific management system; the domain-specific management system is used to manage the RAN domain or the CN (Core Network) domain. For example, the ML training function for MDA (Management Data Analytics) can be deployed in MDAF (MDA function); ML training for network data analysis can be deployed in NWDAF (Network Data Analytics Function), that is, the ML training function is MTLF (Model Training logical function).

[0647] The ML reasoning function can also be deployed in a cross-domain management system or a domain-specific management system; for example, the ML reasoning function is MDAF, or the ML reasoning function is AnLF (Analytics logical function) located in NWDAF.

[0648] Similarly, ML testing capabilities can also be deployed in cross-domain management systems, or domain-specific management systems.

[0649] In Example 13, the RAN domain ML training function 1302 is located in the RAN domain management function 1303; and the ML reasoning function is located in the base station, that is, the AI / ML reasoning function 1304 is located in the gNB1305, the AI / ML reasoning function 1306 is located in the gNB1307, and so on.

[0650] Attached Fig.13 In the example, the management of the ML reasoning functions of multiple base stations is completed by the RAN domain management function 1303, that is, data interaction with the RAN domain MnS (Management Service) consumer / cross-domain management 1301 (see attached Fig.13 ).

[0651] Optionally, the management of the ML reasoning function may also be performed by the base station itself, that is, each base station may independently interact with the RAN domain MnS consumer / cross-domain management 1301 for data.

[0652] It should be noted that Example 13 is merely a non-restrictive implementation method; optionally, the ML training function of the RAN domain may also be deployed in the base station; or optionally, some base stations deploy the ML reasoning function and the ML training function of the RAN domain, while some base stations only deploy the ML reasoning function.

[0653] As an embodiment, a gNB (or base station) in Embodiment 2 is the base station described in the present application.

[0654] As an embodiment, the first processor includes an attached Fig.13 An AL / ML reasoning function, namely 1304 or 1306.

[0655] As an embodiment, the second processor includes an attached Fig.13 An AL / ML reasoning function, namely 1304 or 1306.

[0656] As an example, Fig.13 An AL / ML inference function in performs ML training based on the collected wireless link failure data.

[0657] As an example, Fig.13 An AL / ML inference function in performs ML training based on the collected measurement results.

[0658] Embodiment 14

[0659] Embodiment 14 illustrates a schematic diagram of the AI / ML function deployment of a UE according to an embodiment of the present application; Fig.14 Attached Fig.14 The RAN domain ML training functionality 1405 is optional.

[0660] The UE function 1404 is deployed in the terminal of the present application, and the UE function 1404 includes an AI / ML reasoning function 1406; the AI / ML reasoning function 1406 uses an ML model (also called an AI model) for reasoning; an ML model is usually trained before being used for AI / ML reasoning.

[0661] As an embodiment, the UE function 1404 includes a RAN domain ML training function 1405, and the RAN domain ML training function 1405 runs the training data through the ML model to derive relevant losses, and adjusts the parameters of the ML model based on the calculated losses; the ML training includes at least one of ML initial training, ML re-training, and reinforcement learning.

[0662] The above embodiments can reduce the complexity of the base station, or save air interface resources caused by reporting training data; however, the above embodiments place high demands on the processing capability of the UE side.

[0663] Optionally, the UE function 1404 also includes a CN domain ML training function ( Fig.14 not included).

[0664] Optionally, the UE function 1404 also includes an AI / ML deployment function: Fig.14 Not included, used to load ML models and data.

[0665] As an embodiment, the terminal indicates whether it supports the ML training function (RAN domain or CN domain) through capability reporting, and the capability reporting is RRC signaling, or NAS (Non-Access Stratum) signaling.

[0666] As an embodiment, the ML model and related metadata are loaded by the terminal from a network device or a remote server.

[0667] Optionally, the UE function 1404 is a MnS (Management Service) producer, providing data to the CN domain MnF (Management Function) 1401, and / or the RAN domain MnF 1402, and / or the cross-domain management system 1403 for management or analysis (as shown by the double arrow 1407).

[0668] Optionally, the UE function 1404 is an MnS consumer (Consumer), which loads data from the CN domain MnF (Management Function) 1401, and / or the RAN domain MnF 1402, and / or the cross-domain management system 1403 for AI / ML related management, such as management data requests, ML model activation, and / or ML training, etc. (as shown by the double arrow 1407).

[0669] As an embodiment, the prediction of wireless link failure in the present application is obtained through reasoning by the AI / ML reasoning function 1406.

[0670] As an embodiment, the first message in the present application is obtained through reasoning by the AI / ML reasoning function 1406.

[0671] As an embodiment, the update of the first message in the present application is obtained through reasoning of the AI / ML reasoning function 1406.

[0672] As an embodiment, the first threshold in the present application is obtained through reasoning by the AI / ML reasoning function 1406 .

[0673] As an embodiment, the prediction result in the present application is obtained through reasoning of the AI / ML reasoning function 1406.

[0674] As an embodiment, the predicted probability density distribution function of the wireless link failure in the present application is obtained through reasoning by the AI / ML reasoning function 1406 .

[0675] As an embodiment, the cumulative distribution function of the predicted wireless link failure probability in the present application is obtained through reasoning by the AI / ML reasoning function 1406.

[0676] As an embodiment, the first time length in the present application is obtained through reasoning by the AI / ML reasoning function 1406.

[0677] As an embodiment, the determination of whether the target operation in the present application is the first candidate or the second candidate is obtained through reasoning by the AI / ML reasoning function 1406 .

[0678] As an embodiment, the first message or the update of the first message or the first threshold or the prediction result or the predicted probability density distribution function of the wireless link failure or the predicted cumulative distribution function of the probability of wireless link failure or the first time length or the target operation is the first candidate or the second candidate. The judgment is obtained through reasoning of the AI / ML reasoning function 1406.

[0679] As an embodiment, the first processor includes an attached Fig.14 An AL / ML reasoning function 1406 in.

[0680] As an embodiment, the ML model is based on a neural network.

[0681] As an embodiment, the ML model is based on CNN (Conventional Neural Networks).

[0682] As an embodiment, the ML model is based on the Transformer architecture.

[0683] Embodiment 15

[0684] Embodiment 15 illustrates a schematic diagram of a processing system based on artificial intelligence or machine learning according to another embodiment of the present application; Fig.15 Attached Fig.15 Includes a third processor, a fourth processor, a fifth processor and a sixth processor.

[0685] In Example 15, the third processor sends a first data set to the fourth processor and a second data set to the fifth processor; the fourth processor generates a target first-category parameter group based on the first data set, and the fourth processor sends the generated target first-category parameter group to the fifth processor; the fifth processor processes the second data set using the target first-category parameter group to obtain a first-category output, and (optionally) the fifth processor sends the first-category output to the sixth processor. Fig.15 In the embodiment, the first type of feedback and the second type of feedback are optional; the fourth processor includes ML training function; and the fifth processor includes ML reasoning function.

[0686] As an embodiment, the sixth processor includes ML testing functionality.

[0687] As an embodiment, the sixth processor includes performance monitoring / evaluation of the ML model.

[0688] As an embodiment, the fifth processor sends the first type of feedback to the fourth processor, and the first type of feedback is used to trigger recalculation or updating of the target first type parameter group, that is, triggering ML initial training or ML retraining.

[0689] As an embodiment, the sixth processor sends a second type of feedback to the third processor, and the second type of feedback is used to generate the first data set or the second data set, or the second type of feedback is used to trigger the sending of the first data set or the sending of the second data set.

[0690] As an embodiment, the third processing machine generates the first data set and the second data set according to measurements.

[0691] As an embodiment, the fifth processor belongs to the terminal, and the sixth processor belongs to the base station.

[0692] As an embodiment, the first type of output includes the prediction of wireless link failure.

[0693] As an embodiment, the first type of output includes the first message.

[0694] As an embodiment, the first type of output includes an update of the first message.

[0695] As an embodiment, the first type of output includes the first threshold.

[0696] As an embodiment, the first type of output includes the prediction result.

[0697] As an embodiment, the first type of output includes a probability density distribution function of the predicted wireless link failure.

[0698] As an embodiment, the first type of output includes a cumulative distribution function of the predicted wireless link failure probability.

[0699] As an embodiment, the first type of output includes the first time length.

[0700] As an embodiment, the first type of output includes a determination as to whether the target operation is the first candidate or the second candidate.

[0701] As an embodiment, the second data set includes measurements for a reference signal.

[0702] As an embodiment, the first data set includes training data (Training Data).

[0703] As an embodiment, the fourth processor is used to train the ML model, and the trained model is described by the target first-category parameter group.

[0704] As an embodiment, the fourth processor belongs to the terminal.

[0705] The above embodiment avoids transmitting the first data set to the base station.

[0706] As an embodiment, the fourth processor belongs to the base station.

[0707] The above embodiments support joint training and optimize system performance.

[0708] As an embodiment, the fourth processor belongs to the core network.

[0709] The above embodiments support joint training of the entire network, further optimizing system performance.

[0710] As an embodiment, the second data set includes inference data.

[0711] As an embodiment, the fifth processor belongs to the terminal.

[0712] As an embodiment, the fifth processing machine constructs a model according to the target first-category parameter group, and then inputs the second data set into the constructed model to obtain the first-category output.

[0713] As an embodiment, the fifth processing machine generates a restored data set according to the first type of output, and an error between the restored data set and the second data set is used to generate the first type of feedback.

[0714] As an embodiment, the first type of feedback is used to reflect the performance of the trained model; when the performance of the trained model cannot meet the requirements, the fourth processor will recalculate the target first type parameter group.

[0715] As an embodiment, when the error is too large or has not been updated for too long, the performance of the trained model is considered to be unable to meet the requirements.

[0716] As an embodiment, the target first category parameter group includes: one or more of: convolution kernel size, number of convolution layers, convolution step size, pooling kernel size, pooling kernel step size, pooling function, activation function, or number of feature maps.

[0717] As an embodiment, the target first-category parameter group includes: one or more of a convolution kernel, a pooling kernel, a pooling function, an activation function, parameters of a pooling function, or parameters of an activation function.

[0718] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The user equipment, terminal and UE in the present application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, wireless sensors, Internet cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication, Machine Type Communication) terminals, eMTC (enhanced MTC, enhanced MTC) terminals, data cards, Internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base stations or system devices in this application include but are not limited to macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B) NR Node B, TRP (Transmitter Receiver Point) and other wireless communication devices.

[0719] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method used in a terminal, characterized in that: include: In response to predicting a radio link failure, performing a target operation; wherein the candidates for the target operation include a first candidate and a second candidate; the first candidate includes sending a first message on a first serving cell, and the second candidate does not include sending the first message on the first serving cell; Whether the target operation is the first candidate or the second candidate depends on at least a first time interval, and the first time interval is related to at least one of the predicted time of radio link failure and the predicted time of radio link failure; Whether the target operation is the first candidate or the second candidate depends on the first time interval and includes: When at least the first time interval satisfies a first time length, the target operation is the first candidate; When the first time interval does not satisfy a first time length, the target operation is the second candidate.

2. The method according to claim 1, characterized in that Whether the target operation is the first candidate or the second candidate depends on the state of a radio link failure monitoring parameter; the radio link failure monitoring parameter is used to determine radio link failure.

3. The method according to claim 1 or 2, characterized in that: The second candidate includes RRC connection reestablishment; and the RRC connection reestablishment includes cell selection.

4. The method according to any one of claims 1 to 3, characterized in that The first candidate does not include determining a radio link failure, and the second candidate includes determining a radio link failure.

5. The method according to any one of claims 1 to 4, characterized in that Neither the first candidate nor the second candidate includes determining a radio link failure.

6. The method according to any one of claims 1 to 5, characterized in that The method comprises: In response to receiving the second message, starting a first timer; and stopping the first timer in response to receiving the second message. The target operation is the first candidate; and the second message is received when the first timer runs.

7. A terminal, characterized in that: The terminal includes: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program codes, where the computer program codes include computer instructions. The one or more processors call the computer instructions to enable the terminal to execute the method according to any one of claims 1 to 6.

8. A method used in a base station, characterized in that: include: receiving a first message; Wherein, as a response to the sender of the first message predicting a radio link failure, the sender of the first message performs a target operation; the candidates for the target operation include a first candidate and a second candidate; the first candidate includes sending the first message on a first serving cell, and the second candidate does not include sending the first message on a serving cell of the first node; whether the target operation is the first candidate or the second candidate depends on at least a first time interval, and the first time interval is related to at least one of the time when the radio link failure is predicted and the time when the radio link failure is predicted; Whether the target operation is the first candidate or the second candidate depends on the first time interval and includes: When at least the first time interval satisfies a first time length, the target operation is the first candidate; When the first time interval does not satisfy a first time length, the target operation is the second candidate.

9. The method according to claim 8, characterized in that Whether the target operation is the first candidate or the second candidate depends on the state of a radio link failure monitoring parameter; the radio link failure monitoring parameter is used to determine radio link failure.

10. The method according to claim 8 or 9, characterized in that: The second candidate includes RRC connection reestablishment; and the RRC connection reestablishment includes cell selection.

11. The method according to any one of claims 8 to 10, characterized in that The first candidate does not include determining a radio link failure, and the second candidate includes determining a radio link failure.

12. The method according to any one of claims 8 to 11, characterized in that Neither the first candidate nor the second candidate includes determining a radio link failure.

13. The method according to any one of claims 8 to 12, characterized in that Accompanying the first message, the sender of the first message starts a first timer; in response to sending the second message, the sender of the first message stops the first timer; The target operation is the first candidate; and the second message is sent when the first timer runs.

14. A base station, characterized in that: The base station includes: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program codes, where the computer program codes include computer instructions, and the one or more processors call the computer instructions to enable the base station to perform the method according to any one of claims 8 to 13.

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