Processing method for radio link failure (RLF) prediction, apparatus and terminal

Abstract

The present application relates to the technical field of communications, and discloses a processing method for radio link failure (RLF) prediction, an apparatus and a terminal. The method in embodiments of the present application comprises: a terminal executes a target operation on the basis of an RLF prediction result. The target operation comprises at least one of the following: starting a first timer, wherein the first timer is used for a predicted RLF; performing related processing of the predicted RLF; performing an operation related to a counter N310; and performing an operation related to a counter N311.

Description

Radio link failure (RLF) prediction processing method, device, and terminal

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202410395980.3 filed in China on April 2, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a method, device and terminal for processing radio link failure (RLF) prediction. Background Art

[0004] In related technologies, a connected terminal performs radio link monitoring (RLM) based on reference signal measurements and network-configured reference signal quality thresholds. When certain conditions are met, the terminal can determine that a radio link failure (RLF) has occurred. However, in related technologies, these operations are performed only after an RLF has occurred, resulting in poor communication performance. Summary of the Invention

[0005] The embodiments of the present application provide a method, device, and terminal for processing radio link failure (RLF) prediction, which can solve the problem of poor communication performance.

[0006] In a first aspect, a method for processing radio link failure (RLF) prediction is provided, including:

[0007] The terminal performs the target operation according to the RLF prediction result;

[0008] The target operation includes at least one of the following:

[0009] Starting a first timer, where the first timer is used for the predicted RLF;

[0010] Perform relevant processing of the predicted RLF;

[0011] Perform operations related to counter N310;

[0012] Perform operations related to the counter N311.

[0013] In a second aspect, a method for processing radio link failure (RLF) prediction is provided, including:

[0014] The network side device receives a first message sent by the terminal, where the first message carries relevant information about the predicted RLF;

[0015] The predicted RLF related information includes at least one of the following:

[0016] first indication information, where the first indication information is used to indicate that a predicted RLF has occurred;

[0017] second indication information, where the second indication information is used to indicate that the first message is associated with a predicted RLF recovery procedure or a predicted RLF re-establishment procedure;

[0018] third indication information, where the third indication information is used to indicate that the first timer has timed out;

[0019] fourth indication information, where the fourth indication information is used to indicate a cause of the predicted RLF;

[0020] Predict measurement results.

[0021] In a third aspect, a device for processing radio link failure (RLF) prediction is provided, including:

[0022] A first execution module, configured to execute a target operation according to the RLF prediction result;

[0023] The target operation includes at least one of the following:

[0024] Starting a first timer, where the first timer is used for the predicted RLF;

[0025] Perform relevant processing of the predicted RLF;

[0026] Perform operations related to counter N310;

[0027] Perform operations related to the counter N311.

[0028] In a fourth aspect, a processing device for radio link failure (RLF) prediction is provided, including:

[0029] a receiving module, configured to receive a first message sent by a terminal, where the first message carries relevant information about a predicted RLF;

[0030] The predicted RLF related information includes at least one of the following:

[0031] first indication information, where the first indication information is used to indicate that a predicted RLF has occurred;

[0032] second indication information, where the second indication information is used to indicate that the first message is associated with a predicted RLF recovery procedure or a predicted RLF re-establishment procedure;

[0033] third indication information, where the third indication information is used to indicate that the first timer has timed out;

[0034] fourth indication information, where the fourth indication information is used to indicate a cause of the predicted RLF;

[0035] Predict measurement results.

[0036] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0037] In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to:

[0038] Execute the target operation based on the RLF prediction result;

[0039] The target operation includes at least one of the following:

[0040] Starting a first timer, where the first timer is used for the predicted RLF;

[0041] Perform relevant processing of the predicted RLF;

[0042] Perform operations related to counter N310;

[0043] Perform operations related to the counter N311.

[0044] In the seventh aspect, a network side device is provided, which terminal includes a processor and a memory, the memory storing programs or instructions that can be run on the processor, and the program or instructions, when executed by the processor, implement the steps of the method described in the second aspect.

[0045] In an eighth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is configured to:

[0046] receiving a first message sent by a terminal, where the first message carries relevant information about a predicted RLF;

[0047] The predicted RLF related information includes at least one of the following:

[0048] first indication information, where the first indication information is used to indicate that a predicted RLF has occurred;

[0049] second indication information, where the second indication information is used to indicate that the first message is associated with a predicted RLF recovery procedure or a predicted RLF re-establishment procedure;

[0050] third indication information, where the third indication information is used to indicate that the first timer has timed out;

[0051] fourth indication information, where the fourth indication information is used to indicate a cause of the predicted RLF;

[0052] Predict measurement results.

[0053] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect or the steps of the method described in the second aspect are implemented.

[0054] In the tenth aspect, a chip is provided, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0055] In the eleventh aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0056] In this embodiment of the present application, the terminal performs a target operation based on an RLF prediction result. The target operation includes at least one of the following: starting a first timer for the predicted RLF; performing processing related to the predicted RLF; performing operations related to counter N310; and performing operations related to counter N311. In this way, by performing the target operation based on the RLF prediction result performed by the terminal, RLF-related operations can be performed in advance before an RLF occurs in the terminal, thereby improving system communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0058] FIG2 is a schematic diagram of an RRC connection re-establishment process in the related art;

[0059] FIG3 is a schematic diagram of a neural network in the related art;

[0060] FIG4 is a schematic diagram of a neuron in the related art;

[0061] FIG5 is a schematic diagram of an AI / ML functional framework for an NR air interface in the related art;

[0062] FIG6 is a flowchart of a method for processing RLF prediction provided in an embodiment of the present application;

[0063] FIG7 is a second flowchart of a method for processing RLF prediction provided in an embodiment of the present application;

[0064] FIG8 is a schematic diagram of a structure of a processing device for RLF prediction provided in an embodiment of the present application;

[0065] FIG9 is a second structural diagram of a processing device for RLF prediction provided in an embodiment of the present application;

[0066] FIG10 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0067] FIG11 is a schematic structural diagram of a terminal provided in an embodiment of the present application;

[0068] FIG12 is a schematic structural diagram of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0069] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0070] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0071] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0072] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0073] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AS) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0074] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( Function, AF), Network Data Analysis Function (NWDAF), Analysis Logical Function (Analytics Logical Function, AnLF), Model Training Logical Function (MTLF), etc. It should be noted that in the embodiment of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0075] For ease of understanding, some terms involved in the embodiments of this application are explained below:

[0076] 1. Radio Link Failure (RLF)

[0077] Based on the reference signal measurements and the reference signal quality threshold configured by the network, the RRC_CONNECTED user equipment (UE) performs Radio Link Monitoring (RLM). The UE may declare RLF when the following conditions are met:

[0078] The T310 timer, which is started after the physical layer indicates a problem with the radio link (indicates N310 "out-of-sync"), times out;

[0079] When T310 is running, a measurement report is triggered, and the timer T312 configured with the measurement identifier corresponding to the measurement report times out;

[0080] The Medium Access Control (MAC) layer random access procedure fails;

[0081] The maximum number of retransmissions at the Radio Link Control (RLC) layer reaches the upper limit, causing RLC failure.

[0082] When RLF occurs, the UE maintains the RRC_CONNECTED state and selects a suitable cell to trigger the RRC re-establishment procedure; if the UE does not find a suitable cell before T311 times out, the UE enters RRC_IDLE.

[0083] 2. Timer / Counter

[0084] In the 5G NR system, the terminal side maintains multiple timers and counters configured on the network side to control the RRC connection establishment, re-establishment, and recovery processes, as well as mobility-related processes such as radio link monitoring (RLM), beam failure detection (BFD), and random access during handover.

[0085] The timer specifically includes the following:

[0086] T300: Timer during which the UE waits for a Radio Resource Control (RRC) connection response.

[0087] T301: Timer during which the UE waits for the RRC re-establishment process;

[0088] T304: Timer for UE to randomly access a special cell (SpCell);

[0089] T310: Timer for UE to monitor radio link failure (RLF);

[0090] T311: The timer for the UE to switch to the idle state after detecting RLF;

[0091] T312: Timer for fast switching failure recovery;

[0092] T316: Timer for fast Master Cell Group (MCG) link recovery;

[0093] T319: Timer during which the UE waits for an RRC connection recovery response;

[0094] beamFailureDetectionTimer: timer used for beam failure detection process;

[0095] beamFailureRecoveryTimer: Timer for beam failure recovery.

[0096] This embodiment of the present application mainly focuses on T304, T310, T311, and T312, and describes how the UE defines the start, stop, and behavior after timeout of the timer as follows:

[0097] Timer T304:

[0098] Timer start conditions: When the UE receives an RRC reconfiguration message carrying reconfigurationWithSync, or performs conditional reconfiguration;

[0099] Timer stop conditions: successful completion of random access on the corresponding SpCell; for the Secondary Cell Group (SCG), T304 is stopped once the SCG is released;

[0100] Behavior after timer expiration: For Master Cell Group (MCG), for handover from NR or intra-NR handover, initiate RRC re-establishment procedure; for handover to NR, perform the actions defined in the source RAT protocol. If Dual Active Protocol Stack (DAPS) bearer is configured and there is no RLF in the source primary serving cell (PCell), initiate failure information procedure; for SCG, initiate SCG failure information procedure to notify the network to use synchronous reconfiguration (Reconfiguration with sync).

[0101] Timer T310:

[0102] Conditions for starting the timer: Detection of a physical layer problem in the SpCell, such as receiving N310 consecutive out-of-sync indications from the lower layer;

[0103] The timer stops when: N311 consecutive SpCell in-sync indications are received from the bottom layer; or an RRC reconfiguration message carrying reconfigurationWithSync is received;

[0104] Behavior after timer expiration: For MCG, if access stratum (AS) security is not activated, enter RRC_IDLE; otherwise, initiate the MCG failure information process or RRC connection reestablishment process; for SCG, initiate the SCG failure information process.

[0105] Timer T312:

[0106] Timer start conditions: If T312 is configured in MCG: During T310, the terminal triggers a measurement report corresponding to a measurement ID, and the measurement ID is configured with T312, and use T312 is configured as true; If T312 is configured in SCG and useT312 is configured as true: During T310, the terminal triggers a measurement report corresponding to a measurement ID, and the measurement ID is configured with T312;

[0107] The timer stops when: N311 consecutive in-sync indications are received from the lower layer, or an RRC reconfiguration message containing reconfigurationWithSync is received, or a conditional reconfiguration is performed.

[0108] Behavior after timer expiration: If it is T312 of MCG, initiate the MCG failure information process or RRC connection re-establishment process; if it is T312 of SCG, initiate the SCG failure information process.

[0109] The counters specifically include the following:

[0110] N310: counter that controls the start time of T310;

[0111] N311: counter that controls the stop time of T310;

[0112] beamFailureInstanceMaxCount: A counter that controls when Beam Failure Recovery (BFR) is triggered.

[0113] The reset and increment times of N310 and N311, as well as the actions after reaching the maximum value, are shown in Table 1:

[0114] Table 1

[0115] The "out-of-sync" and "in-sync" instructions are explained as follows:

[0116] The terminal determines Qout and Qin thresholds and compares the measurement results of the Radio Link Monitoring-reference signal (RLM-RS) with these thresholds. If the measurement result is worse than Qout, an "out-of-sync" event is reported; if the measurement result is better than Qin, an "in-sync" event is reported.

[0117] Qin is the threshold value at which the terminal's downlink channel quality is good enough for reliable transmission, which actually translates to the channel quality when the Block Error Rate (BLER) detected on the PDCCH reaches BLERin. Qout is the threshold value at which the terminal's downlink channel quality no longer allows reliable transmission, which actually translates to the channel quality when the BLER detected on the Physical Downlink Control Channel (PDCCH) reaches BLERout. The RLM-RS can be a Synchronization Signal Block (SSB), a CSI Reference Signal (CSI-RS), or a mixture of SSB and CSI-RS. The configuration of BLERin and BLERout can be shown in Table 2:

[0118] Table 2

[0119] 3. RLF failure handling:

[0120] If access stratum (AS) security is not activated, enter RRC_IDLE;

[0121] If Multi-Radio Dual Connectivity (MR-DC) is configured:

[0122] For MCG, initiate the MCG failure information process;

[0123] For SCG, initiate the SCG failure information process;

[0124] Otherwise: execute the RRC connection reestablishment process.

[0125] RRC connection reestablishment process:

[0126] Turn on T311; perform cell selection.

[0127] If the cell selection successfully finds a suitable cell, stop T311.

[0128] If conditional reconfiguration is configured and the candidate cell corresponding to the suitable cell is configured with an attempt indication, the RRC conditional reconfiguration of the candidate cell is applied; otherwise, the RRC connection reestablishment process is performed.

[0129] The RRC connection re-establishment process is shown in Figure 2.

[0130] The UE sends a re-establishment request RRCReestablishmentRequest on a suitable cell;

[0131] The UE receives the RRCReestablishment message;

[0132] The UE sends an RRCReestablishmentComplete message.

[0133] 4. Artificial Intelligence (AI)

[0134] Artificial intelligence (AI) is currently being widely used in various fields. Integrating AI into wireless communication networks to significantly improve technical indicators such as throughput, latency, and user capacity is a key task for future wireless communication networks. AI modules can be implemented in a variety of ways, such as neural networks, decision trees, support vector machines, and Bayesian classifiers. This application uses neural networks as an example for illustration, but does not limit the specific type of AI module.

[0135] A neural network diagram is shown in Figure 3:

[0136] A neural network is composed of neurons, as shown in Figure 4. Here, a1, a2, …, aK are inputs, w is the weight (multiplicative coefficient), b is the bias (additive coefficient), and σ(.) is the activation function. Common activation functions include sigmoid, tanh, linear rectification function, and rectified linear unit (ReLU).

[0137] Neural network parameters are optimized using a gradient optimization algorithm. Gradient optimization algorithms are a class of algorithms that minimize or maximize an objective function (also known as a loss function). This objective function is often a mathematical combination of model parameters and data. For example, given data X and its corresponding label Y, we construct a neural network model f(.). With this model, we can obtain the predicted output f(x) based on the input x, and calculate the difference between the predicted value and the true value (f(x) - Y). This is the loss function. We find the appropriate values ​​W and b that minimize the loss function. The smaller the loss value, the closer the model is to the true value.

[0138] Currently, most common optimization algorithms are based on the back propagation (BP) algorithm. The basic idea of ​​the BP algorithm is that the learning process consists of two steps: forward propagation of signals and back propagation of errors. During forward propagation, input samples are passed from the input layer, processed layer by layer through each hidden layer, and then transmitted to the output layer. If the actual output of the output layer does not match the expected output, the error begins back propagation. Back propagation involves propagating the output error back through the hidden layers to the input layer layer by layer in some form, distributing the error to all units in each layer. This error signal is then generated for each unit in each layer, which serves as the basis for adjusting the weights of each unit. This process of adjusting the weights of each layer, through forward propagation of signals and back propagation of errors, is repeated over and over again. This process of continuous weight adjustment is the network's learning and training process. This process continues until the error in the network output is reduced to an acceptable level, or until a pre-set number of learning cycles is reached.

[0139] Common optimization algorithms include gradient descent, stochastic gradient descent (SGD), mini-batch gradient descent, momentum method (Momentum), stochastic gradient descent with momentum (Nesterov), adaptive gradient descent (Adagrad), Adadelta, root mean square error (RMSprop), adaptive momentum estimation (Adam), etc.

[0140] When these optimization algorithms backpropagate errors, they all calculate the derivative / partial derivative of the current neuron based on the error / loss obtained by the loss function, add the influence of the learning rate, the previous gradient / derivative / partial derivative, etc., obtain the gradient, and pass the gradient to the previous layer.

[0141] 4.1 AI Unit / AI Model

[0142] The AI ​​unit / AI model described in this application may also be referred to as an AI unit, an AI model, a machine learning (ML) model, an ML unit, an AI structure, an AI function, an AI feature, a machine learning model, a neural network, a neural network function, a neural network function, etc., or the AI ​​unit / AI model may also refer to a processing unit that can implement specific algorithms, formulas, processing procedures, capabilities, etc. related to AI, or the AI ​​unit / AI model may be a processing method, algorithm, function, module or unit for a specific data set, or the AI ​​unit / AI model may be a processing method, algorithm, function, module or unit running on AI / ML related hardware such as a graphics processing unit (GPU), a neural network processor (NPU), a tensor processing unit (TPU), an application specific integrated circuit (ASIC), etc., and the embodiments of this application do not specifically limit this. Optionally, the specific data set includes the input or output of the AI ​​unit / AI model.

[0143] Optionally, the identifier of the AI ​​unit / AI model may be an AI model identifier, an AI structure identifier, an AI algorithm identifier, or an identifier of a specific data set associated with the AI ​​unit / AI model, or an identifier of a specific scenario, environment, channel feature, or device related to the AI / ML, or an identifier of a function, feature, capability, or module related to the AI / ML. This embodiment of the present application does not specifically limit this.

[0144] AI functionality: refers to an AI algorithm function that can include multiple AI models.

[0145] 4.2 AI / ML Framework

[0146] The Air Interface AI project of Release 18 studied the AI / ML framework, and the main process is shown in Figure 5.

[0147] Data Collection: Responsible for providing input data for Model Training, Management, and Inference;

[0148] Model Training: Responsible for executing AI / ML model training, validation, and testing, as well as data preparation, including preprocessing and converting data into specific formats.

[0149] Management: responsible for model selection / activation / deactivation / switching / rollback, etc.

[0150] Inference: Responsible for providing the output after applying the AI / ML model or AI / ML function;

[0151] Model Storage: responsible for saving trained / updated models;

[0152] Model Transfer / Delivery: Responsible for delivering the AI / ML model to the inference function node.

[0153] 5. Radio resource management (RRM) measurement reporting

[0154] The measurement configuration mainly consists of the measurement object, reporting configuration and measurement ID;

[0155] Measurement Object: The frequency point to be measured;

[0156] Report Configuration (ReportConfig): Associated reporting criteria (periodic / event-triggered); Reference Signal Type (SSB / CSI-RS), Measurement Reporting Quantity (Any combination of Reference Signal Received Power (RSRP) / Reference Signal Received Quality (RSRQ) / Signal to Interference plus Noise Ratio (SINR)); Whether to report beam measurement results, the maximum number of reportable beams, etc.

[0157] Measurement identifier (measId): used to associate a measurement object with a reporting configuration. A measurement object can be associated with multiple reporting configurations, and a reporting configuration can be associated with multiple measurement objects.

[0158] In NR, measurement objects, reporting configurations, and measurement IDs are associated as follows:

[0159] In the reporting configuration, you can associate events to trigger reporting. The events defined in NR are shown in Table 3:

[0160] Table 3

[0161] Taking the A3 event as an example, the meanings of the parameters for the entry and exit conditions are as follows:

[0162] Mn: Neighboring cell measurement result, without considering any offset;

[0163] Ofn: Neighborhood measurement object specific offset;

[0164] Ocn: Neighboring cell-level specific offset;

[0165] Mp: SpCell (primary serving cell) measurement result, without considering any offset;

[0166] Ofp: SpCell measurement object specific offset;

[0167] Ocp: SpCell cell-level specific offset;

[0168] Hys: hysteresis parameter of the event;

[0169] Off: The offset parameter of the event.

[0170] If the reporting type is event-triggered, in order to avoid frequent reporting or ping-pong switching, the base station configures the timeToTrigger parameter for each event. If the L3 filtered signal quality of one or more candidate cells within the timeToTrigger time meets the event entry conditions, the measurement report is triggered.

[0171] The following, in conjunction with the accompanying drawings, describes in detail the processing method, apparatus and related equipment for radio link failure (RLF) prediction provided by the embodiments of the present application through some embodiments and their application scenarios.

[0172] 6 , which is a flowchart of a method for processing radio link failure RLF prediction provided by an embodiment of the present application. As shown in FIG6 , the method for processing RLF prediction includes the following steps:

[0173] Step 101: The terminal performs a target operation according to the RLF prediction result;

[0174] The target operation includes at least one of the following:

[0175] Starting a first timer, where the first timer is used for the predicted RLF;

[0176] Perform relevant processing of the predicted RLF;

[0177] Perform operations related to counter N310;

[0178] Perform operations related to the counter N311.

[0179] The first timer may be described as an RLF prediction timer. The first timer may be used to monitor a predicted radio link failure. When an RLF is predicted to occur, the terminal may start the first timer and optionally report relevant information about the predicted RLF. When the first timer expires, a recovery process for the predicted RLF is performed; or, when the first timer expires, a re-establishment process for the predicted RLF is performed; or, when the first timer expires, relevant information about the predicted RLF is reported.

[0180] In one embodiment, the terminal may start a first timer when reporting information related to the predicted RLF to the network device, and stop the first timer when receiving a reconfiguration of the network device, thereby monitoring the reconfiguration of the network device through the first timer.

[0181] In one embodiment, the duration of the first timer may be determined by the terminal based on the predicted RLF occurrence time; or, the duration of the first timer may be configured by the network side device; or, the duration of the first timer may be predefined by the protocol, which is not limited in this embodiment.

[0182] In addition, starting the first timer may also be described as starting the first timer, or running the first timer.

[0183] In addition, the target operation may include performing relevant processing of the predicted RLF, and the relevant processing of the predicted RLF may include: selecting a target cell, the target cell being used for the recovery process of the predicted RLF or the re-establishment process of the predicted RLF; executing the recovery process of the predicted RLF; executing the re-establishment process of the predicted RLF; or reporting relevant information of the predicted RLF; and so on.

[0184] In one implementation, operations related to the counter N310 may be described as N310 operations. The terminal may reset or increment N310 based on the RLF prediction result and the "In-sync" or "out-of-sync" indication.

[0185] In one implementation, operations related to the counter N311 may be described as N311 operations. The terminal may reset or increment N311 based on the RLF prediction result and the "In-sync" or "out-of-sync" indication.

[0186] The above-mentioned operations N310 and N311 may be described as in-sync operations. In-sync operations may refer to enhancing the in-sync monitoring process based on RLF prediction. By performing operations related to counters N310 or N311, the terminal can enhance the in-sync monitoring process based on the RLF prediction result.

[0187] The above-mentioned operations N310 and N311 may be described as out-of-sync operations. Out-of-sync operations may refer to enhancing the out-of-sync monitoring process based on RLF prediction. By performing operations related to counters N310 or N311, the out-of-sync monitoring process may be enhanced based on the RLF prediction result.

[0188] In one implementation, the terminal performs a target operation based on the RLF prediction result;

[0189] The target operation includes at least one of the following:

[0190] Start the first timer;

[0191] When the first timer times out, perform related processing of the predicted RLF;

[0192] Perform operations related to counter N310;

[0193] Perform operations related to the counter N311.

[0194] In one implementation, the terminal performs RLF prediction and executes a target operation according to the RLF prediction result.

[0195] Among them, the RLF prediction result is used to indicate whether RLF will occur. For example, the RLF prediction result may include a prediction value, which is true or false. A true prediction value indicates that RLF is predicted to occur, and a false prediction value indicates that RLF is not predicted to occur; or, the RLF prediction result may include a predicted probability of RLF occurrence. When the predicted probability of RLF occurrence is greater than or equal to a threshold, it indicates that RLF is predicted to occur; when the predicted probability of RLF occurrence is less than a threshold, it indicates that RLF is not predicted to occur; or, the RLF prediction result may include a predicted time point of RLF occurrence. When the predicted time point of RLF occurrence is within a target time range, it indicates that RLF is predicted to occur; when the predicted time point of RLF occurrence is not within the target time range, it indicates that RLF is not predicted to occur. The embodiment of the present application does not limit the specific form of the RLF prediction result.

[0196] In one embodiment, before executing a target operation based on an RLF prediction result, the terminal may receive configuration information sent by a network-side device. This configuration information is used for configuring a target timer or a re-establishment process based on RLF prediction. The target timer includes at least one of the following: a first timer; a timer T310; and a timer T312.

[0197] In this embodiment of the present application, the terminal performs a target operation based on an RLF prediction result. The target operation includes at least one of the following: starting a first timer for the predicted RLF; performing processing related to the predicted RLF; performing operations related to counter N310; and performing operations related to counter N311. In this way, by performing the target operation based on the RLF prediction result performed by the terminal, RLF-related operations can be performed in advance before an RLF occurs in the terminal, thereby improving system communication performance.

[0198] Optionally, the processing related to the predicted RLF includes at least one of the following:

[0199] Selecting a target cell, the target cell being used for a predicted RLF recovery process or a predicted RLF re-establishment process;

[0200] Execute the recovery process of the predicted RLF;

[0201] Performing a predicted RLF re-establishment procedure;

[0202] Reports information related to predicted RLF.

[0203] The performing of the predicted RLF recovery process may refer to performing predicted RLF recovery based on configured candidate cells.

[0204] The predicted RLF related information may include at least one of the following:

[0205] RLF prediction results;

[0206] Information about timers associated with RLF prediction;

[0207] Predicted probability of random access failure;

[0208] The predicted probability that the retransmission of the radio link control (RLC) layer reaches the maximum number of retransmissions;

[0209] Prediction measurement results for predicting when RLF will occur.

[0210] The timers associated with RLF prediction may include at least one of the following: a first timer; timer T310; and timer T312. The relevant information about the timers associated with RLF prediction may include: relevant information about timer T310; relevant information about timer T312; and relevant information about the first timer, where the first timer may be used for the predicted RLF.

[0211] In one embodiment, the relevant information of the timer T310 includes at least one of the following:

[0212] Indication information used to indicate the start status of timer T310;

[0213] Indication information used to indicate whether the prediction timer T310 has timed out;

[0214] Indication information used to indicate the probability of the predicted timer T310 timing out;

[0215] Indication information used to indicate the remaining duration of timer T310;

[0216] or

[0217] The relevant information of the timer T312 includes at least one of the following:

[0218] Indication information used to indicate the start status of timer T312;

[0219] Indication information used to indicate whether the prediction timer T312 has timed out;

[0220] Indication information used to indicate the probability of the predicted timer T312 timing out;

[0221] Indication information used to indicate the remaining duration of timer T312;

[0222] or,

[0223] The relevant information of the first timer includes at least one of the following:

[0224] Instruction information used to indicate whether to use the first timer;

[0225] Indication information used to indicate whether the first timer is started;

[0226] Indication information used to indicate the duration of the first timer.

[0227] The predicted probability of random access failure is, for example, the probability of random access failure predicted by the terminal on a serving cell of a carrier aggregation (CA) or multi-radio dual connectivity (MR-DC) cell group.

[0228] The predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions may be a predicted probability that the RLC layer fails due to the maximum number of automatic repeat requests (ARQ).

[0229] The predicted measurement result for predicting the RLF occurrence time can be understood or replaced by a predicted measurement result at the predicted RLF occurrence time. The predicted measurement result may include the signal quality of the serving cell or the signal quality of other cells, which can facilitate the auxiliary network to provide a configuration suitable for the terminal and improve communication quality.

[0230] Optionally, the duration of the first timer is determined by the terminal based on a predicted RLF occurrence time; or, the duration of the first timer is configured by a network-side device.

[0231] Before the terminal performs the target operation based on the RLF prediction result, it can receive configuration information sent by the network-side device, and the configuration information can be used to configure the first timer duration. This eliminates the need for the terminal to calculate the first timer duration, and ensures that the processing of the first timer is within the scope of the network configuration.

[0232] Optionally, the duration of the first timer is the difference between the duration of the start time of the first timer and the predicted RLF occurrence time and an offset.

[0233] The offset may be used to indicate a time advance relative to a time point at which the RLF is predicted to occur, and is used to process possible RLF in advance. The offset may be set to 0.

[0234] Optionally, when the first timer is started, if timer T310 times out, the terminal ignores the timeout of timer T310; or

[0235] When the first timer is started, if timer T312 times out, the terminal ignores the timeout of timer T312; or

[0236] When the first timer is started, the terminal does not start timer T310 or timer T312; or

[0237] When the timer T310 or the timer T312 is running, the first timer is not started.

[0238] In one embodiment, when the first timer is enabled, if timer T310 times out, the terminal ignores the timeout of timer T310; or, when the first timer is enabled, if timer T312 times out, the terminal ignores the timeout of timer T312. It should be understood that if the first timer is still running, it can be assumed that the current link of the terminal can continue to be available, and the terminal does not need to immediately trigger the RRC connection re-establishment process based on the timeout of T310 or T312.

[0239] In one embodiment, when the first timer is enabled, the terminal does not enable timer T310 or timer T312. Thus, when the terminal performs RLF prediction, it is not necessary to monitor RLF using T310 or T312, which simplifies RLF monitoring and helps save energy for the terminal.

[0240] In one embodiment, when timer T310 or timer T312 is running, the first timer is not started. Thus, in this embodiment, the target operation includes starting the first timer only when timer T310 or timer T312 is not running.

[0241] The timer running may mean that the timer is in an on state or in a started state.

[0242] In one embodiment, the terminal may use the first timer, T310, or T312 according to an instruction of the network side device. The terminal may receive instruction information sent by the network side device, where the instruction information indicates at least one of the following:

[0243] When predictive RLF is used, normal RLF is not used; in other words, when the first timer is running, T310 or T312 is not started;

[0244] When using normal RLF, predictive RLF is not used, or in other words, when T310 or T312 is running, the first timer is not started;

[0245] Normal RLF and predicted RLF are used, or in other words, the first timer, T310 or T312, is allowed to be used simultaneously.

[0246] Here, "use" can be understood as configuration or activation, etc.

[0247] Optionally, when the first timer is started, the method further includes:

[0248] When the terminal meets a first condition, the terminal stops the first timer;

[0249] The first condition includes at least one of the following:

[0250] The terminal receives first configuration information sent by the network side device;

[0251] The terminal initiates a re-establishment process of a predicted RLF;

[0252] Timer T310 times out;

[0253] Timer T312 times out.

[0254] The first configuration information may be used for switching configuration or reconfiguration.

[0255] In one embodiment, when the terminal receives the first configuration information sent by the network side device, the terminal stops the first timer, so that when the terminal has successfully executed the predicted RLF recovery process, the first timer can be turned off, and there is no need to monitor the predicted wireless link failure through the first timer.

[0256] In one embodiment, when the terminal initiates the re-establishment process of the predicted RLF, the terminal stops the first timer, so that when the terminal has successfully initiated the re-establishment process of the predicted RLF, the first timer can be turned off, and there is no need to monitor the predicted wireless link failure through the first timer.

[0257] In one implementation, when the timer T310 times out or the timer T312 times out, the terminal stops the first timer, so that when RLF has occurred in the terminal, there is no need to monitor the predicted radio link failure.

[0258] Optionally, the processing related to the predicted RLF includes:

[0259] When the target timer times out, perform related processing of the predicted RLF;

[0260] The target timer includes at least one of the following: a first timer; a timer T310; and a timer T312.

[0261] In one implementation, the target timer includes a first timer, and when the first timer times out, related processing of the predicted RLF is performed.

[0262] In one implementation, the target timer includes a timer T310. When the timer T310 times out, related processing of the predicted RLF is performed.

[0263] In one implementation, the target timer includes a timer T312. When the timer T312 times out, related processing of the predicted RLF is performed.

[0264] Optionally, when the related processing of the predicted RLF includes selecting a target cell, the selected target cell includes at least one of the following:

[0265] Conditional handover candidate cells;

[0266] Candidate cells for predicted RLF configured by the network;

[0267] Cells selected based on predicted measurement results;

[0268] The cell is determined based on the predicted probability of RLF.

[0269] The conditional handover candidate cell may include a conditional handover candidate cell for conditional handover (CHO) or conditional primary secondary cell (PScell) addition / change (CPAC).

[0270] In addition, the candidate cells for predicted RLF configured by the network can be understood as candidate cells suitable for predicted RLF, or referred to as candidate cells for re-establishment or recovery. When the terminal predicts RLF, it can perform handover, access, or RRC connection re-establishment on the candidate cells for predicted RLF configured by the network.

[0271] In addition, the predicted measurement result may refer to a frequency point or a cell identifier and its corresponding predicted measurement result, such as a predicted received signal strength, beam strength, layer 3 measurement result, or layer 1 measurement result. The frequency point or cell identifier may refer to a frequency point or cell identifier corresponding to a serving cell measurement or a neighboring cell measurement configured by the network. The cell selected based on the predicted measurement result may be a cell characterized as suitable for predicting RLF in the predicted measurement result. For example, it may be a cell with a stronger received signal in the predicted measurement result. The cell suitable for predicting RLF may refer to a cell that can be used during the re-establishment or recovery process of the predicted RLF.

[0272] In one implementation, the predicted measurement result may refer to a predicted measurement result of a serving cell measurement or a neighboring cell measurement configured by the network, where the serving cell measurement or the neighboring cell measurement corresponds to a frequency point or a cell identifier.

[0273] In addition, the cell determined based on the predicted probability of RLF may refer to a cell where the predicted probability of RLF is less than or equal to a certain threshold, and the threshold may be configured by the network side or predefined by a protocol.

[0274] In one implementation, before the terminal performs a target operation based on the RLF prediction result, the terminal may receive at least one of the following configuration information sent by the network-side device:

[0275] Candidate cells for predicted RLF;

[0276] Conditional handover CHO candidate cell configuration, wherein the conditional handover (Conditional PSCell Change, CPC) candidate cell configuration of CHO or primary and secondary cells includes a first indication, which is used to indicate that the terminal is allowed to try the candidate cell during the reconstruction or recovery process based on RLF prediction.

[0277] It should be noted that the terminal does not need to leave the connected state to perform cell selection. The terminal can remain in the connected state and perform handover, access, or reestablishment on the candidate cell, which can reduce the interruption duration of data transmission.

[0278] Optionally, the conditional handover candidate cell includes at least one of the following:

[0279] The predicted execution condition is satisfied and the candidate cell is switched;

[0280] allowing the terminal to attempt a conditional handover candidate cell during a recovery process of a predicted RLF;

[0281] The terminal is allowed to attempt a conditional handover candidate cell during a re-establishment process of a predicted RLF.

[0282] The selected target cell includes a conditional switching candidate cell that satisfies the predicted execution condition, so that the terminal can select the candidate cell that satisfies the predicted execution condition, thereby ensuring communication performance.

[0283] In addition, the network side device may indicate to the terminal that the terminal is allowed to attempt conditional switching candidate cells during the recovery process of the predicted RLF, so that the network can effectively plan the traffic load of the candidate cells.

[0284] In addition, the network side device may indicate to the terminal a conditional switching candidate cell that the terminal is allowed to attempt during the re-establishment process of the predicted RLF, so that the network can effectively plan the traffic load of the candidate cell.

[0285] Optionally, when the performing the related processing of the predicted RLF includes reporting the related information of the predicted RLF, the reporting the related information of the predicted RLF includes:

[0286] Sending a first message to a network-side device, where the first message carries relevant information about the predicted RLF;

[0287] The predicted RLF related information includes at least one of the following:

[0288] first indication information, where the first indication information is used to indicate that a predicted RLF has occurred;

[0289] second indication information, where the second indication information is used to indicate that the first message is associated with a predicted RLF recovery procedure or a predicted RLF re-establishment procedure;

[0290] third indication information, where the third indication information is used to indicate that the first timer has timed out;

[0291] fourth indication information, where the fourth indication information is used to indicate a cause of the predicted RLF;

[0292] Predict measurement results.

[0293] In one embodiment, the target operation may include: the terminal selecting a target cell and sending a first message to a network device, the first message carrying information related to the predicted RLF; the first message may indicate to the network device that a reestablishment or recovery process based on the RLF prediction is complete. This allows the terminal to indicate the cause of the predicted RLF to the network device after performing the reconfiguration process, thereby facilitating data statistics and network optimization.

[0294] In one embodiment, sending the first message to the network device may include sending the first message to the network device when a target timer expires and the terminal meets a second condition. The target timer includes at least one of the following: a first timer; a timer T310; and a timer T312.

[0295] In one embodiment, the sending of the first message to the network side device may include sending the first message on the cell group (Cell group) associated with the first timer. It can be understood that if the Cell group associated with the first timer can still send or receive data normally, the first message is sent on the Cell group to facilitate the network node corresponding to the Cell group to process the first message. The Cell group includes MCG and SCG. The network node corresponding to the MCG is the master node (Master Node, MN), and the network node corresponding to the SCG is the secondary node (Secondary Node, SN).

[0296] Optionally, the fourth indication information indicates at least one of the following:

[0297] Predicting a radio link failure; or, predicting that the number of out-of-sync indications received reaches the value of counter N310; or, predicting that timer T310 times out; or, predicting that timer T312 times out;

[0298] Predicting failure of the Medium Access Control (MAC) layer random access procedure;

[0299] A Radio Link Control (RLC) failure is predicted, where the RLC failure is caused by retransmission at the RLC layer reaching a maximum number of retransmissions.

[0300] The out-of-sync indication may refer to an "out-of-sync" indication, and the predicted number of times the out-of-sync indication is received reaching the value of the counter N310 may refer to predicting N310 "out-of-sync".

[0301] Optionally, the sending the first message to the network side device includes:

[0302] When the target timer times out and the terminal meets the second condition, sending the first message to the network side device;

[0303] The target timer includes at least one of the following: a first timer; a timer T310; a timer T312;

[0304] The second condition includes at least one of the following:

[0305] The terminal is configured with multi-radio dual connectivity MR-DC;

[0306] The primary cell group MCG or the secondary cell group SCG is not suspended;

[0307] Timer T310 is not running or has not timed out;

[0308] Timer T312 is not running or has not timed out.

[0309] The MR-DC may include an EN-DC or an NR-DC, etc. The MCG or SCG is not suspended, which can be understood or replaced as the MCG or SCG is not in a deactivated state.

[0310] In addition, the timer T310 may be associated with an MCG or an SCG.

[0311] In addition, the timer T312 may be associated with an MCG or an SCG.

[0312] In one implementation, the target timer includes a first timer. When the first timer times out and the terminal meets a second condition, the terminal sends the first message to the network side device.

[0313] In one implementation, the target timer includes a timer T310. When the timer T310 times out and the terminal meets the second condition, the terminal sends the first message to the network side device.

[0314] In one implementation, the target timer includes a timer T312. When the timer T312 times out and the terminal meets the second condition, the terminal sends the first message to the network side device.

[0315] Optionally, the sending the first message to the network side device includes:

[0316] If the target timer is held by the MCG, the terminal sends the first message to the network side device through the SCG; or

[0317] If the target timer is held by the SCG, the terminal sends the first message to the network side device through the MCG.

[0318] In one embodiment, if the target timer is held by an MCG, the terminal sends the first message to the network-side device through the SCG. If the first timer is held by an MCG (if the first timer is Kept in MCG), that is, the first timer is associated with the MCG, that is, a predicted RLF occurs on the MCG, the terminal sends the first message through the SCG. For example, the first message may be an SCG Failure Information message.

[0319] In one embodiment, if the target timer is held by the SCG, the terminal sends the first message to the network-side device through the MCG. If the first timer is held by the SCG (if the first timer is Kept in SCG), that is, the first timer is associated with the SCG, that is, a predicted RLF occurs on the SCG, the terminal sends the first message through the MCG. For example, the first message may be an MCG Failure Information message.

[0320] Optionally, after sending the first message to the network-side device, the method further includes:

[0321] The terminal starts a second timer, where the second timer is used for a recovery process of a predicted RLF;

[0322] Upon receiving the second configuration message sent by the network-side device, the terminal stops the second timer.

[0323] It should be noted that the terminal receives the second configuration message sent by the network side device, indicating that the terminal restores the RRC connection during the operation of the second timer, which can quickly resolve the RLF problem to avoid a long delay in resolving the problem.

[0324] In this embodiment, the terminal starts a second timer, which is used for the predicted RLF recovery process; upon receiving the second configuration message sent by the network-side device, the terminal stops the second timer. Thus, the predicted RLF recovery process can be monitored using the second timer.

[0325] Optionally, the method further includes:

[0326] When the second timer times out, the terminal performs at least one of the following operations:

[0327] Performing a predicted RLF re-establishment procedure;

[0328] Stop the running timer T304, timer T310, or timer T312;

[0329] Perform radio resource control (RRC) connection re-establishment procedure;

[0330] Enter the idle or inactive state.

[0331] The inactive state refers to the RRC Inactive state.

[0332] It can be understood that if the second timer times out, it can be considered that the recovery process of the predicted RLF has failed.

[0333] Optionally, before sending the first message to the network-side device, the method further includes:

[0334] The terminal receives third configuration information sent by the network-side device, where the third configuration information includes at least one of the following:

[0335] fifth indication information, used to indicate the duration of the first timer;

[0336] Sixth indication information, used to indicate an offset used to set the duration of the first timer;

[0337] The seventh indication information is used to indicate the duration of the second timer;

[0338] Eighth indication information, used to indicate the duration of the third timer;

[0339] ninth indication information, used to indicate that the terminal enters an idle state or an inactive state when the third timer times out;

[0340] Tenth indication information, used to indicate a conditional handover candidate cell;

[0341] Eleventh indication information, used to indicate a candidate cell for predicted RLF;

[0342] Twelfth indication information is used to indicate that cell selection is allowed based on the predicted measurement result;

[0343] Thirteenth indication information is used to indicate a cell determined according to the predicted RLF probability;

[0344] Fourteenth indication information, used to indicate that operations related to the counter N310 are permitted;

[0345] The fifteenth indication information is used to indicate that operations related to the counter N311 are allowed.

[0346] Wherein, the network side device instructs the terminal to enter an idle state or an inactive state when the third timer times out, and the network side device instructs the terminal to enter which state when the third timer times out. If the terminal is instructed to enter an inactive state (such as an RRC Inactive state), the network side provides a suspend configuration (SuspendConfig) to the terminal.

[0347] In addition, the network side device indicates that operations related to counter N310 are allowed or operations related to counter N311 are allowed, and the network side indicates whether the terminal performs reset or increase operations of N310 or N311 based on RLF prediction, so that the terminal can perform operations related to counter N310 or operations related to counter N311 according to the configuration of the network.

[0348] Optionally, when the performing the related processing of the predicted RLF includes executing a re-establishment process of the predicted RLF, the executing the re-establishment process of the predicted RLF includes:

[0349] A second message is sent to the network side device based on the selected target cell, where the second message is used to request re-establishment of the predicted RLF.

[0350] In one implementation, the target operation may include: the terminal selecting a target cell, and sending a second message to a network-side device based on the selected target cell, where the second message is used to request re-establishment of the predicted RLF.

[0351] Optionally, the method further includes:

[0352] Starting a third timer, where the third timer is used for a re-establishment process of a predicted RLF;

[0353] If the target cell is successfully selected, stop the third timer; or

[0354] When the third timer times out, the terminal enters an idle state or an inactive state.

[0355] In one embodiment, the target operation may include:

[0356] The terminal selects a target cell and starts a third timer, where the third timer is used for a re-establishment process of a predicted RLF;

[0357] The terminal sends a second message to the network side device based on the selected target cell, where the second message is used to request re-establishment of the predicted RLF.

[0358] In one embodiment, the target operation may include:

[0359] When the first timer times out, the terminal selects a target cell and starts a third timer.

[0360] In one embodiment, the target operation may further include:

[0361] If the target cell is successfully selected, stop the third timer; or

[0362] When the third timer times out, the terminal enters an idle state or an inactive state; or

[0363] The terminal stops timer T310, T312, or T304.

[0364] Optionally, the performing operations related to the counter N310 includes at least one of the following:

[0365] Upon receiving the synchronization indication, if a third condition is met, the terminal resets N310;

[0366] When receiving the synchronization indication, if the fourth condition is met, the terminal does not reset the N310;

[0367] In the case of receiving the out-of-sync indication, if the third condition is met, the terminal does not increase the N310;

[0368] Upon receiving the out-of-sync indication, if a fourth condition is met, the terminal increases the N310;

[0369] in,

[0370] The third condition includes at least one of the following:

[0371] The RLF prediction result indicates that RLF is not predicted to occur; the first timer is not running;

[0372] The fourth condition includes at least one of the following:

[0373] The RLF prediction result indicates that an RLF is predicted to occur; the first timer is running; and T310 is not running.

[0374] In addition, the synchronization indication may be referred to as an “in-sync” indication. The out-of-sync indication may be referred to as an “out-of-sync” indication. The out-of-sync indication may also be described as a loss of synchronization indication.

[0375] Optionally, the performing of operations related to the counter N311 includes at least one of the following:

[0376] Upon receiving the synchronization indication, if the fifth condition is met, the terminal increases the N311;

[0377] When receiving the synchronization indication, if the sixth condition is met, the terminal does not increase the N311;

[0378] In the case of receiving the out-of-sync indication, if the fifth condition is met, the terminal does not reset the N311;

[0379] Upon receiving the out-of-sync indication, if a sixth condition is met, the terminal resets N311;

[0380] in,

[0381] The fifth condition includes at least one of the following:

[0382] The RLF prediction result indicates that RLF is not predicted to occur; the first timer is not running; T310 is running;

[0383] The sixth condition includes at least one of the following:

[0384] The RLF prediction result indicates that an RLF is predicted to occur; and the first timer is running.

[0385] The relevant technology specifies how the terminal performs RLM measurements and RLF judgments, as well as the behavior after RLF is triggered. Among them, the terminal performs RLF judgment based on statically configured counters and timers. However, the process of waiting for the timer to time out or the counter to reach the threshold will also prolong the time to execute the next action to a certain extent. In another related technology, AI / ML-assisted mobility enhancement is introduced, including AI / ML-based RLF (Radio Link Failure) prediction. However, how to handle radio link failure prediction, including how to coexist with related RLF mechanisms, how to restore RRC connection based on RLF prediction, and other issues need to be solved urgently.

[0386] Through the embodiments of the present application, it is possible to solve the problem of how to process the RLF prediction results after introducing AI / ML-based RLF prediction, and to use RLF prediction to optimize system performance.

[0387] In one implementation, the terminal (ie, UE) performs a target operation according to an RLF prediction result, including: the UE performs RLF prediction; and according to the RLF prediction result, performs a target operation, wherein the target operation includes starting a first timer.

[0388] Optionally, the UE performs a predicted RLF report and starts a first timer. It can be understood that if the UE predicts that an RLF will occur, it performs a predicted RLF report and starts a first timer.

[0389] The prediction of whether RLF will occur can be determined based on a judgment criterion. The judgment criterion includes at least one of the following:

[0390] The probability of predicting RLF is greater than or equal to a first probability threshold;

[0391] The predicted time point of RLF is within the target time range.

[0392] The duration of the first timer is determined by at least one of the following methods:

[0393] The UE determines the first timer duration based on the predicted RLF time point. For example, the first timer duration = the distance from the current time to the predicted RLF time point - the first offset. The first offset represents the time advance relative to the predicted RLF occurrence time point, used to preemptively handle possible RLF. The first offset can be 0.

[0394] The network-configured first timer duration. Before RLF prediction, the UE receives configuration information from the network, including the configuration of the first timer duration. This method simplifies the calculation of the first timer duration and ensures that the processing of the first timer falls within the scope of network configuration.

[0395] The protocol agreement is as the default value.

[0396] Optionally, the UE performs at least one of the following operations:

[0397] If T310 or T312 times out and the first timer is running, the UE ignores the timeout of T310 or T312. It can be understood that based on the result of the RLF prediction, since the first timer is still running, the current link can still be maintained, and the UE does not need to immediately trigger the re-establishment process based on the timeout of T310 or T312.

[0398] If the first timer is running, the UE does not start T310 or T312. That is, the UE performs the RLF prediction process and does not need to monitor RLF through T310 or T312, thereby simplifying RLF monitoring and facilitating UE energy saving.

[0399] If T310 or T312 is running, the first timer is not started;

[0400] The UE uses the first timer, T310 or T312, according to the first configuration of the network.

[0401] In a case where the UE uses the first timer, T310 or T312 according to the first configuration of the network, the first configuration of the network indicates at least one of the following:

[0402] When predictive RLF is used, normal RLF is not used; in other words, when the first timer is running, T310 or T312 is not started;

[0403] When using normal RLF, predictive RLF is not used, or in other words, when T310 or T312 is running, the first timer is not started;

[0404] Normal RLF and predicted RLF are used, or in other words, the first timer, T310 or T312, is allowed to be used simultaneously.

[0405] Here, "use" can be understood as configuration or activation, etc.

[0406] Optionally, the UE receives a second configuration from the network, such as a handover configuration or a reconfiguration, etc. If the first timer is running, upon receiving the second configuration, the UE stops the first timer.

[0407] Optionally, the condition for the UE to stop the first timer includes at least one of the following:

[0408] After the UE receives the second configuration from the network, the UE stops the first timer;

[0409] After the UE initiates the re-establishment process, the UE stops the first timer;

[0410] After T310 or T312 times out, the UE stops the first timer.

[0411] In one implementation, the terminal (ie, UE) performs a target operation according to an RLF prediction result, including: the UE performs RLF prediction; and according to the RLF prediction result, performs a target operation, wherein the target operation includes starting a first timer.

[0412] The RLF prediction processing method may also include the following process:

[0413] (1) After the first timer expires, the UE performs a recovery process based on the configured candidate cell.

[0414] Optionally, if the first timer times out, the UE selects a target cell to perform a re-establishment or recovery process based on RLF prediction, that is, the UE switches to, accesses the target cell, or re-establishes on the target cell.

[0415] The target cell includes at least one of the following:

[0416] Conditional handover candidate cells, where the conditional handover includes CHO or CPAC;

[0417] The predicted execution condition satisfies the conditional switching candidate cell. It can be understood that the UE selects the candidate cell that satisfies the predicted execution condition, thereby ensuring communication performance;

[0418] The UE is allowed to attempt a conditional handover candidate cell during a re-establishment or recovery process based on RLF prediction, wherein the CHO or CPC candidate cell configuration includes a first indication, i.e., allowing the UE to try the candidate cell during a re-establishment or recovery process based on RLF prediction, thereby effectively planning the traffic load of the candidate cell.

[0419] A candidate cell suitable for predicting RLF, or a candidate cell for re-establishment or recovery, is understood to be a cell configured by the network for predicting RLF. When the UE predicts RLF, handover, access, or re-establishment is performed on the candidate cell.

[0420] A cell is selected based on the predicted measurement results, for example, the target cell is a cell with a stronger received signal;

[0421] Predict cells with low RLF probability.

[0422] Optionally, the UE stops running T304, T310, and T312.

[0423] Furthermore, before this, the UE receives a third configuration sent by the network, which includes at least one of the following:

[0424] Candidate cells for predicted RLF;

[0425] Conditional handover CHO candidate cell configuration, wherein the CHO or CPC candidate cell configuration includes a first indication, namely allowing the UE to try the candidate cell during the re-establishment or recovery process based on RLF prediction.

[0426] It is understood that compared to related technologies, the UE does not need to perform cell selection after leaving the connected state. The UE can remain in the connected state and perform handover, access, or re-establishment on the candidate cell, which can reduce the interruption duration of data transmission.

[0427] (2) The UE sends a response message to the network indicating that the re-establishment or recovery process based on the RLF prediction is complete. The response message includes at least one of the following failure reasons:

[0428] Predicted RLF failure;

[0429] Re-establishment or recovery based on RLF prediction, i.e., indicating that the response message is associated with the re-establishment or recovery process based on RLF prediction;

[0430] Predicted wireless link problems, or N310 "out-of-sync", or T310 timeout, or T312 timeout;

[0431] The predicted MAC layer random access procedure fails;

[0432] The predicted RLC layer retransmission reaches the maximum number of retransmissions, resulting in RLC failure.

[0433] It can be understood that after the UE performs the reconfiguration process, it indicates the failure reason to the network, thereby facilitating the network to perform data statistics and network optimization.

[0434] In one implementation, the terminal (ie, UE) performs a target operation according to an RLF prediction result, including: the UE performs RLF prediction; and according to the RLF prediction result, performs a target operation, wherein the target operation includes starting a first timer.

[0435] After the first timer times out, the UE reports the failure information. If the first timer times out, the UE performs the first recovery process.

[0436] The RLF prediction processing method may also include the following process:

[0437] (1) If the first timer times out and the second condition is met, the UE sends a failure message to the network, where the failure message includes at least one of the following:

[0438] The first reason for failure;

[0439] Indication information of first timer timeout;

[0440] Predict measurement results.

[0441] The first failure reason includes at least one of the following:

[0442] Predicted RLF failure, indicating that a predicted RLF occurred;

[0443] Re-establishment or recovery based on RLF prediction, i.e., indicating that the response message is associated with the re-establishment or recovery process based on RLF prediction;

[0444] Predicted wireless link problems, or N310 "out-of-sync", or T310 timeout, or T312 timeout;

[0445] The predicted MAC layer random access procedure fails;

[0446] The predicted RLC layer retransmission reaches the maximum number of retransmissions, resulting in RLC failure.

[0447] The predicted measurement result may refer to a frequency point or a cell identifier and its corresponding predicted measurement result, such as received signal strength, beam strength, Layer 3 measurement result or Layer 1 measurement result.

[0448] The second condition includes at least one of the following:

[0449] The UE is configured with MR-DC, which includes EN-DC or NR-DC.

[0450] The MCG or SCG is not suspended, that is, not in the deactivated state;

[0451] T310 or T312 is not running or has not timed out, wherein optionally, T310 or T312 is associated with an MCG or SCG.

[0452] Optionally, the UE sends the failure information on the Cell group associated with the first timer. It is understood that if the Cell group associated with the first timer can still send or receive data normally, the failure information is sent on the Cell group to facilitate the network node corresponding to the Cell group to process the failure information. The Cell group includes an MCG and an SCG. The network node corresponding to the MCG is a master node MN, and the network node corresponding to the SCG is a slave node SN.

[0453] or,

[0454] If the first timer is Kept in MCG, that is, the first timer is associated with the MCG, that is, the predicted RLF occurs on the MCG, the UE reports the failure information through the SCG, such as sending the failure information through an SCG Failure information message.

[0455] If the first timer is Kept in SCG, that is, the first timer is associated with the SCG, that is, the predicted RLF occurs in the SCG, the UE reports the failure information through the MCG, such as sending the failure information through an MCG Failure information message.

[0456] (2) Optionally, the UE starts a second timer. The second timer is used for the first recovery process.

[0457] If the UE receives the fourth configuration sent by the network during the running of the second timer, the second timer is stopped.

[0458] If the second timer expires, the UE performs one of the following operations:

[0459] Performing a first re-establishment process, wherein the first re-establishment process is a re-establishment process of the predicted RLF;

[0460] Stop the running T304, T310 or T312;

[0461] Perform an RRC connection re-establishment process, i.e., an RRC connection re-establishment process of the related art;

[0462] Entering the idle state, it can be understood that if the problem cannot be solved within a certain period of time, the UE can enter the idle state to save energy.

[0463] It can be understood that if the second timer times out, it can be considered that the first recovery process has failed.

[0464] It can be understood that the UE restores the RRC connection during the running of the second timer, which can quickly resolve the RLF problem and avoid excessive delay in resolving the problem.

[0465] In one implementation, the terminal (ie, UE) performs a target operation according to an RLF prediction result, including: the UE performs RLF prediction; and according to the RLF prediction result, performs a target operation, wherein the target operation includes starting a first timer.

[0466] After the first timer times out, the first re-establishment process is executed.

[0467] The RLF prediction processing method may also include the following process:

[0468] (1) If the first timer expires, the UE performs the first re-establishment procedure.

[0469] Optionally, the UE performs at least one of the following:

[0470] The UE stops timers such as T310, T312, and T304;

[0471] The UE starts a third timer, which is used for the first re-establishment process.

[0472] If the third timer times out, the UE enters the idle state. It can be understood that if the third timer times out, it is considered that the first re-establishment process has failed.

[0473] If the target cell selection described below is successfully performed, the third timer is stopped.

[0474] The UE performs target cell selection.

[0475] The UE selects a target cell, where the target cell includes at least one of the following:

[0476] The candidate cells suitable for predicting RLF, or also referred to as candidate cells for reestablishment or recovery, may be understood as follows: the network indicates the candidate cells suitable for RLF prediction through system information, and when the UE predicts RLF, the UE selects one of the candidate cells;

[0477] A cell is selected based on the predicted measurement results, for example, the target cell is a cell with a stronger received signal;

[0478] Predict cells with low RLF probability.

[0479] Furthermore, before this, the UE receives a fifth configuration (such as system information) of the serving cell, which includes at least one of the following:

[0480] A candidate cell suitable for predicting RLF, that is, allowing the UE to select the candidate cell during the reestablishment or recovery process based on RLF prediction.

[0481] It can be understood that, compared with related technologies, the UE selects a target cell based on a candidate cell range predicted or indicated by the network and reestablishes on the target cell, which can improve the performance of the reestablishment process.

[0482] (2) The UE sends a request message to the network requesting reestablishment based on RLF prediction. The request message includes at least one of the following:

[0483] Reestablishment reason, indicating reestablishment based on RLF prediction.

[0484] It is understood that when the UE initiates the re-establishment process, it indicates the re-establishment reason to the network, thereby facilitating the network to perform data statistics and network optimization. The re-establishment reason may also include at least one of the following (similar to the failure reason):

[0485] Predicted RLF failure, indicating that a predicted RLF occurred;

[0486] Reestablishment or recovery based on RLF prediction, i.e., the indication request message is associated with a reestablishment or recovery process based on RLF prediction;

[0487] Predicted wireless link problems, or N310 "out-of-sync", or T310 timeout, or T312 timeout;

[0488] The predicted MAC layer random access procedure fails;

[0489] The predicted RLC layer retransmission reaches the maximum number of retransmissions, resulting in RLC failure.

[0490] In one implementation, the terminal (ie, UE) performs a target operation according to an RLF prediction result, including: the UE performs a target operation according to the RLF prediction result, and the target operation includes an N310-related operation.

[0491] The UE performs the target operation based on the RLF prediction result, including at least one of the following N310-related operations:

[0492] Upon receiving the "in-sync" indication from the lower layer, the UE resets N310 when the third condition is met;

[0493] Once the "in-sync" indication is received from the lower layer, the UE does not reset N310 if the fourth condition is met;

[0494] Upon receiving the "out-of-sync" indication from the lower layer, the UE does not increase N310 if the third condition is met;

[0495] Upon receiving an “out-of-sync” indication from the lower layer, the UE increases N310 when the fourth condition is met.

[0496] in:

[0497] N310 refers to the maximum number of consecutive "out-of-sync" indications for the SpCell received from lower layers.

[0498] N311 refers to the maximum number of consecutive "in-sync" indications for the SpCell received from lower layers.

[0499] The third condition includes at least one of the following:

[0500] The RLF prediction is false, that is, it is predicted that RLF will not occur;

[0501] The first timer is not running.

[0502] The fourth condition includes at least one of the following:

[0503] The RLF prediction is true, which means that RLF is predicted to occur;

[0504] The first timer is running.

[0505] Optionally, the UE performs the N310 related operations according to a sixth configuration of the network. The network instructs the UE whether to perform the N310 reset or increase operation based on the RLC prediction.

[0506] It is understood that when RLF is predicted not to occur, the UE resets N310 after receiving the "in-sync" indication from the bottom layer. In other words, when RLF is predicted to occur, the UE does not reset N310 after receiving the "in-sync" indication from the bottom layer, which can speed up the counting of N310 and thus improve the efficiency of RLF judgment. That is:

[0507] When the RLF is predicted to be true (or the RLF probability is higher than the threshold), T310 is started faster to speed up the processing of the RLF.

[0508] When the RLF is predicted to be false (or the RLF probability is lower than a threshold), stopping T310 is accelerated to reduce the triggering of unnecessary RLF processing.

[0509] In one implementation, the terminal (ie, UE) performs a target operation according to an RLF prediction result, including: the UE performs a target operation according to the RLF prediction result, and the target operation includes an N311-related operation.

[0510] The terminal performs the target operation based on the RLF prediction result, including at least one of the following N311-related operations:

[0511] Upon receiving the "in-sync" indication from the lower layer, the UE increases N311 if the fifth condition is met;

[0512] Once the "in-sync" indication is received from the lower layer, the UE does not increase the reset N311 if the sixth condition is met;

[0513] Upon receiving an "out-of-sync" indication from the lower layer, the UE does not reset N311 if the fifth condition is met;

[0514] Once an "out-of-sync" indication is received from the lower layer, the UE resets N311 when the sixth condition is met.

[0515] The fifth condition includes at least one of the following:

[0516] The RLF prediction is false, that is, it is predicted that RLF will not occur;

[0517] The first timer is not running.

[0518] The sixth condition includes at least one of the following:

[0519] The RLF prediction is true, which means that RLF is predicted to occur;

[0520] The first timer is running.

[0521] Optionally, the UE performs the N311 related operation according to the seventh configuration of the network. The network instructs the UE whether to perform the N311 reset or increase operation based on the RLC prediction.

[0522] It is understood that when RLF is predicted not to occur, the UE does not reset N311 after receiving an "out-of-sync" indication from the lower layer. This can speed up the counting of N311, thereby improving the efficiency of RLF determination. In other words, when RLF is predicted to occur, the UE does not increase N311 after receiving an "in-sync" indication from the lower layer.

[0523] The embodiments of the present application can be used in LTE, NR, or 6G, etc.

[0524] Compared with the related art, the embodiments of the present application enhance RLF processing based on RLF prediction results, including coexistence or independent operation of related RLF mechanisms, restoring RRC connection based on RLF prediction, and reducing the delay of RLF processing.

[0525] 7 , which is a flowchart of a method for processing radio link failure (RLF) prediction provided by an embodiment of the present application. As shown in FIG7 , the method for processing RLF prediction includes the following steps:

[0526] Step 201: A network-side device receives a first message sent by a terminal, where the first message carries information related to a predicted RLF.

[0527] The predicted RLF related information includes at least one of the following:

[0528] first indication information, where the first indication information is used to indicate that a predicted RLF has occurred;

[0529] second indication information, where the second indication information is used to indicate that the first message is associated with a predicted RLF recovery procedure or a predicted RLF re-establishment procedure;

[0530] third indication information, where the third indication information is used to indicate that the first timer has timed out;

[0531] fourth indication information, where the fourth indication information is used to indicate a cause of the predicted RLF;

[0532] Predict measurement results.

[0533] Optionally, the network-side device receiving a first message sent by a terminal includes:

[0534] The network side device receives the first message sent by the terminal through the SCG; the first message is associated with the MCG; or

[0535] The network side device receives the first message sent by the terminal through the MCG; the first message is associated with the SCG.

[0536] In one implementation, the network-side device is a secondary node SN, and the network-side device receives the first message sent by the terminal through an SCG.

[0537] In one implementation, the network side device is a master node SN, and the network side device receives the first message sent by the terminal through the MCG.

[0538] Optionally, before the network-side device receives the first message sent by the terminal, the method further includes:

[0539] The network-side device sends third configuration information to the terminal, where the third configuration information includes at least one of the following:

[0540] fifth indication information, used to indicate the duration of the first timer;

[0541] Sixth indication information, used to indicate an offset used to set the duration of the first timer;

[0542] The seventh indication information is used to indicate the duration of the second timer;

[0543] Eighth indication information, used to indicate the duration of the third timer;

[0544] ninth indication information, used to indicate that the terminal enters an idle state or an inactive state when the third timer times out;

[0545] Tenth indication information, used to indicate a conditional handover candidate cell;

[0546] Eleventh indication information, used to indicate a candidate cell for predicted RLF;

[0547] Twelfth indication information is used to indicate that cell selection is allowed based on the predicted measurement result;

[0548] Thirteenth indication information is used to indicate a cell determined according to the predicted RLF probability;

[0549] Fourteenth indication information, used to indicate that operations related to the counter N310 are permitted;

[0550] The fifteenth indication information is used to indicate that operations related to the counter N311 are allowed.

[0551] Optionally, the conditional handover candidate cell includes at least one of the following:

[0552] The predicted execution condition is satisfied and the candidate cell is switched;

[0553] allowing the terminal to attempt a conditional handover candidate cell during a recovery process of a predicted RLF;

[0554] The terminal is allowed to attempt a conditional handover candidate cell during a re-establishment process of a predicted RLF.

[0555] Optionally, the performing operations related to the counter N310 includes at least one of the following:

[0556] In case of the received synchronization indication, if the third condition is met, the terminal resets the N310;

[0557] In case of the received synchronization indication, if the fourth condition is met, the terminal does not reset the N310;

[0558] In case of receiving the out-of-sync indication, if the third condition is met, the terminal does not increase the N310;

[0559] In case of receiving the out-of-sync indication, if the fourth condition is met, the terminal increases the N310;

[0560] in,

[0561] The third condition includes at least one of the following:

[0562] The RLF prediction result indicates that RLF is not predicted to occur; the first timer is not running;

[0563] The fourth condition includes at least one of the following:

[0564] The RLF prediction result indicates that an RLF is predicted to occur; and the first timer is running.

[0565] Optionally, the performing of operations related to the counter N311 includes at least one of the following:

[0566] Upon receiving the synchronization indication, if the fifth condition is met, the terminal increases the N311;

[0567] When receiving the synchronization indication, if the sixth condition is met, the terminal does not increase the N311;

[0568] In the case of receiving the out-of-sync indication, if the fifth condition is met, the terminal does not reset the N311;

[0569] Upon receiving the out-of-sync indication, if a sixth condition is met, the terminal resets N311;

[0570] in,

[0571] The fifth condition includes at least one of the following:

[0572] The RLF prediction result indicates that RLF is not predicted to occur; the first timer is not running;

[0573] The sixth condition includes at least one of the following:

[0574] The RLF prediction result indicates that an RLF is predicted to occur; and the first timer is running.

[0575] Optionally, after the network-side device receives the first message sent by the terminal, the method further includes:

[0576] The network side device sends second configuration information to the terminal, where the second configuration information is used for cell switching or RRC reconfiguration.

[0577] The RLF prediction processing method provided in the embodiment of the present application can be executed by a RLF prediction processing device. In the embodiment of the present application, the RLF prediction processing device executing the RLF prediction processing method is taken as an example to illustrate the RLF prediction processing device provided in the embodiment of the present application.

[0578] Please refer to FIG8 , which is a structural diagram of a device for processing RLF prediction provided in an embodiment of the present application. A terminal includes the device for processing RLF prediction. As shown in FIG8 , the device 300 for processing RLF prediction includes:

[0579] A first execution module 301 is configured to execute a target operation according to an RLF prediction result;

[0580] The target operation includes at least one of the following:

[0581] Starting a first timer, where the first timer is used for the predicted RLF;

[0582] Perform relevant processing of the predicted RLF;

[0583] Perform operations related to counter N310;

[0584] Perform operations related to the counter N311.

[0585] Optionally, the processing related to the predicted RLF includes at least one of the following:

[0586] Selecting a target cell, the target cell being used for a predicted RLF recovery process or a predicted RLF re-establishment process;

[0587] Execute the recovery process of the predicted RLF;

[0588] Performing a predicted RLF re-establishment procedure;

[0589] Reports information related to predicted RLF.

[0590] Optionally, the duration of the first timer is determined by the terminal based on a predicted RLF occurrence time; or, the duration of the first timer is configured by a network-side device.

[0591] Optionally, the duration of the first timer is the difference between the duration of the start time of the first timer and the predicted RLF occurrence time and an offset.

[0592] Optionally, when the first timer is started, if timer T310 times out, the terminal ignores the timeout of timer T310; or

[0593] When the first timer is started, if timer T312 times out, the terminal ignores the timeout of timer T312; or

[0594] When the first timer is started, the terminal does not start timer T310 or timer T312; or

[0595] When the timer T310 or the timer T312 is running, the first timer is not started.

[0596] Optionally, when the first timer is started, the apparatus further includes:

[0597] a stopping module, configured to, when the terminal satisfies a first condition, stop the first timer by the terminal;

[0598] The first condition includes at least one of the following:

[0599] The terminal receives first configuration information sent by the network side device;

[0600] The terminal initiates a re-establishment process of a predicted RLF;

[0601] Timer T310 times out;

[0602] Timer T312 times out.

[0603] Optionally, the processing related to the predicted RLF includes:

[0604] When the target timer times out, perform related processing of the predicted RLF;

[0605] The target timer includes at least one of the following: a first timer; a timer T310; and a timer T312.

[0606] Optionally, when the related processing of the predicted RLF includes selecting a target cell, the selected target cell includes at least one of the following:

[0607] Conditional handover candidate cells;

[0608] Candidate cells for predicted RLF configured by the network;

[0609] Cells selected based on predicted measurement results;

[0610] The cell is determined based on the predicted probability of RLF.

[0611] Optionally, the conditional handover candidate cell includes at least one of the following:

[0612] The predicted execution condition is satisfied and the candidate cell is switched;

[0613] allowing the terminal to attempt a conditional handover candidate cell during a recovery process of a predicted RLF;

[0614] The terminal is allowed to attempt a conditional handover candidate cell during a re-establishment process of a predicted RLF.

[0615] Optionally, when the performing the related processing of the predicted RLF includes reporting the related information of the predicted RLF, the reporting the related information of the predicted RLF includes:

[0616] Sending a first message to a network-side device, where the first message carries relevant information about the predicted RLF;

[0617] The predicted RLF related information includes at least one of the following:

[0618] first indication information, where the first indication information is used to indicate that a predicted RLF has occurred;

[0619] second indication information, where the second indication information is used to indicate that the first message is associated with a predicted RLF recovery procedure or a predicted RLF re-establishment procedure;

[0620] third indication information, where the third indication information is used to indicate that the first timer has timed out;

[0621] fourth indication information, where the fourth indication information is used to indicate a cause of the predicted RLF;

[0622] Predict measurement results.

[0623] Optionally, the fourth indication information indicates at least one of the following:

[0624] Predicting a radio link failure; or, predicting that the number of out-of-sync indications received reaches the value of counter N310; or, predicting that timer T310 times out; or, predicting that timer T312 times out;

[0625] Predicting failure of the MAC layer random access procedure;

[0626] A radio link control RLC failure is predicted, where the RLC failure is caused by retransmission at the RLC layer reaching a maximum number of retransmissions.

[0627] Optionally, the sending the first message to the network side device includes:

[0628] When the target timer times out and the terminal meets the second condition, sending the first message to the network side device;

[0629] The target timer includes at least one of the following: a first timer; a timer T310; a timer T312;

[0630] The second condition includes at least one of the following:

[0631] The terminal is configured with multi-radio dual connectivity MR-DC;

[0632] The primary cell group MCG or the secondary cell group SCG of the terminal is not suspended;

[0633] Timer T310 is not running or has not timed out;

[0634] Timer T312 is not running or has not timed out.

[0635] Optionally, the sending the first message to the network side device includes:

[0636] If the target timer is held by the MCG, sending the first message to the network side device through the SCG; or

[0637] If the target timer is held by the SCG, the first message is sent to the network side device through the MCG.

[0638] Optionally, the first execution module is further configured to:

[0639] Starting a second timer, where the second timer is used for a recovery process of the predicted RLF;

[0640] When the second configuration message sent by the network side device is received, the second timer is stopped.

[0641] Optionally, the device further comprises:

[0642] The second execution module is configured to perform at least one of the following operations when the second timer times out:

[0643] Performing a predicted RLF re-establishment procedure;

[0644] Stop the running timer T304, timer T310, or timer T312;

[0645] Perform radio resource control (RRC) connection re-establishment procedure;

[0646] Enter the idle or inactive state.

[0647] Optionally, the device further comprises:

[0648] A receiving module, configured to receive third configuration information sent by the network-side device, where the third configuration information includes at least one of the following:

[0649] fifth indication information, used to indicate the duration of the first timer;

[0650] Sixth indication information, used to indicate an offset used to set the duration of the first timer;

[0651] The seventh indication information is used to indicate the duration of the second timer;

[0652] Eighth indication information, used to indicate the duration of the third timer;

[0653] ninth indication information, used to indicate that the terminal enters an idle state or an inactive state when the third timer times out;

[0654] Tenth indication information, used to indicate a conditional handover candidate cell;

[0655] Eleventh indication information, used to indicate a candidate cell for predicted RLF;

[0656] Twelfth indication information is used to indicate that cell selection is allowed based on the predicted measurement result;

[0657] Thirteenth indication information is used to indicate a cell determined according to the predicted RLF probability;

[0658] Fourteenth indication information, used to indicate that operations related to the counter N310 are permitted;

[0659] The fifteenth indication information is used to indicate that operations related to the counter N311 are allowed.

[0660] Optionally, when the performing the related processing of the predicted RLF includes executing a re-establishment process of the predicted RLF, the executing the re-establishment process of the predicted RLF includes:

[0661] A second message is sent to the network side device based on the selected target cell, where the second message is used to request re-establishment of the predicted RLF.

[0662] Optionally, the first execution module is further configured to:

[0663] Starting a third timer, where the third timer is used for a re-establishment process of a predicted RLF;

[0664] If the target cell is successfully selected, stop the third timer; or

[0665] When the third timer times out, the terminal enters an idle state or an inactive state.

[0666] Optionally, the performing operations related to the counter N310 includes at least one of the following:

[0667] In case of the received synchronization indication, if the third condition is met, the terminal resets the N310;

[0668] In case of the received synchronization indication, if the fourth condition is met, the terminal does not reset the N310;

[0669] In case of receiving the out-of-sync indication, if the third condition is met, the terminal does not increase the N310;

[0670] In case of receiving the out-of-sync indication, if the fourth condition is met, the terminal increases the N310;

[0671] in,

[0672] The third condition includes at least one of the following:

[0673] The RLF prediction result indicates that RLF is not predicted to occur; the first timer is not running;

[0674] The fourth condition includes at least one of the following:

[0675] The RLF prediction result indicates that an RLF is predicted to occur; and the first timer is running.

[0676] Optionally, the performing of operations related to the counter N311 includes at least one of the following:

[0677] Upon receiving the synchronization indication, if the fifth condition is met, the terminal increases the N311;

[0678] When receiving the synchronization indication, if the sixth condition is met, the terminal does not increase the N311;

[0679] When receiving the out-of-sync indication, if the fifth condition is met, the terminal does not reset the N311;

[0680] Upon receiving the out-of-sync indication, if a sixth condition is met, the terminal resets N311;

[0681] in,

[0682] The fifth condition includes at least one of the following:

[0683] The RLF prediction result indicates that RLF is not predicted to occur; the first timer is not running;

[0684] The sixth condition includes at least one of the following:

[0685] The RLF prediction result indicates that an RLF is predicted to occur; and the first timer is running.

[0686] The RLF prediction processing device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in the electronic device, such as an integrated circuit or chip. The electronic device can be a terminal or other device other than a terminal. For example, the terminal can include, but is not limited to, the types of terminal 11 listed above. Other devices can include servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0687] The RLF prediction processing device provided in the embodiment of the present application can implement the various processes implemented in the method embodiment of Figure 6 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0688] Please refer to Figure 9, which is a structural diagram of a device for processing RLF prediction provided in an embodiment of the present application. The network-side device includes the device for processing RLF prediction. As shown in Figure 9, the device 400 for processing RLF prediction includes:

[0689] A receiving module 401 is configured to receive a first message sent by a terminal, where the first message carries relevant information about a predicted RLF;

[0690] The predicted RLF related information includes at least one of the following:

[0691] first indication information, where the first indication information is used to indicate that a predicted RLF has occurred;

[0692] second indication information, where the second indication information is used to indicate that the first message is associated with a predicted RLF recovery procedure or a predicted RLF re-establishment procedure;

[0693] third indication information, where the third indication information is used to indicate that the first timer has timed out;

[0694] fourth indication information, where the fourth indication information is used to indicate a cause of the predicted RLF;

[0695] Predict measurement results.

[0696] Optionally, the receiving module is specifically configured to:

[0697] The first message sent by the terminal is received through the SCG; the first message is associated with the MCG; or

[0698] The first message sent by the terminal is received through the MCG; the first message is associated with the SCG.

[0699] In one implementation, the network-side device is a secondary node SN, and the network-side device receives the first message sent by the terminal through an SCG.

[0700] In one implementation, the network side device is a master node SN, and the network side device receives the first message sent by the terminal through the MCG.

[0701] Optionally, the device further comprises:

[0702] A first sending module is configured to send third configuration information to the terminal, where the third configuration information includes at least one of the following:

[0703] fifth indication information, used to indicate the duration of the first timer;

[0704] Sixth indication information, used to indicate an offset used to set the duration of the first timer;

[0705] The seventh indication information is used to indicate the duration of the second timer;

[0706] Eighth indication information, used to indicate the duration of the third timer;

[0707] ninth indication information, used to indicate that the terminal enters an idle state or an inactive state when the third timer times out;

[0708] Tenth indication information, used to indicate a conditional handover candidate cell;

[0709] Eleventh indication information, used to indicate a candidate cell for predicted RLF;

[0710] Twelfth indication information is used to indicate that cell selection is allowed based on the predicted measurement result;

[0711] Thirteenth indication information is used to indicate a cell determined according to the predicted RLF probability;

[0712] Fourteenth indication information, used to indicate that operations related to the counter N310 are permitted;

[0713] The fifteenth indication information is used to indicate that operations related to the counter N311 are allowed.

[0714] Optionally, the conditional handover candidate cell includes at least one of the following:

[0715] The predicted execution condition is satisfied and the candidate cell is switched;

[0716] allowing the terminal to attempt a conditional handover candidate cell during a recovery process of a predicted RLF;

[0717] The terminal is allowed to attempt a conditional handover candidate cell during a re-establishment process of a predicted RLF.

[0718] Optionally, the performing operations related to the counter N310 includes at least one of the following:

[0719] In case of the received synchronization indication, if the third condition is met, the terminal resets the N310;

[0720] In case of the received synchronization indication, if the fourth condition is met, the terminal does not reset the N310;

[0721] In case of receiving the out-of-sync indication, if the third condition is met, the terminal does not increase the N310;

[0722] In case of receiving the out-of-sync indication, if the fourth condition is met, the terminal increases the N310;

[0723] in,

[0724] The third condition includes at least one of the following:

[0725] The RLF prediction result indicates that RLF is not predicted to occur; the first timer is not running;

[0726] The fourth condition includes at least one of the following:

[0727] The RLF prediction result indicates that an RLF is predicted to occur; and the first timer is running.

[0728] Optionally, the performing of operations related to the counter N311 includes at least one of the following:

[0729] Upon receiving the synchronization indication, if the fifth condition is met, the terminal increases the N311;

[0730] When receiving the synchronization indication, if the sixth condition is met, the terminal does not increase the N311;

[0731] When receiving the out-of-sync indication, if the fifth condition is met, the terminal does not reset the N311;

[0732] Upon receiving the out-of-sync indication, if a sixth condition is met, the terminal resets N311;

[0733] in,

[0734] The fifth condition includes at least one of the following:

[0735] The RLF prediction result indicates that RLF is not predicted to occur; the first timer is not running;

[0736] The sixth condition includes at least one of the following:

[0737] The RLF prediction result indicates that an RLF is predicted to occur; and the first timer is running.

[0738] Optionally, the device further comprises:

[0739] The second sending module is used to send second configuration information to the terminal, where the second configuration information is used for cell switching or RRC reconfiguration.

[0740] Optionally, as shown in Figure 10, an embodiment of the present application further provides a communication device 500, including a processor 501 and a memory 502, wherein the memory 502 stores a program or instruction that can be run on the processor 501. For example, when the communication device 500 is a terminal, the program or instruction is executed by the processor 501 to implement the various steps of the embodiment of the processing method for RLF prediction applied to the terminal, and can achieve the same technical effect. To avoid repetition, it is not repeated here. When the communication device 500 is a network side device, the program or instruction is executed by the processor 501 to implement the various steps of the embodiment of the processing method for RLF prediction applied to the network side device, and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0741] The present application also provides a terminal including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps in the method embodiment shown in FIG6 . This terminal embodiment corresponds to the aforementioned terminal-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this terminal embodiment and can achieve the same technical effects.

[0742] Specifically, FIG11 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0743] The terminal 600 includes but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609 and at least some of the components of the processor 610.

[0744] Those skilled in the art will appreciate that the terminal 600 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 610 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG11 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0745] It should be understood that in an embodiment of the present application, the input unit 604 may include a graphics processing unit (GPU) 6041 and a microphone 6042, and the GPU 6041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 607 includes a touch panel 6071 and at least one of other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include two parts: a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0746] In the embodiment of the present application, after receiving downlink data from a network-side device, the radio frequency unit 601 may transmit the data to the processor 610 for processing. Furthermore, the radio frequency unit 601 may send uplink data to the network-side device. Typically, the radio frequency unit 601 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0747] The memory 609 can be used to store software programs or instructions and various data. The memory 609 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 609 may include a volatile memory or a non-volatile memory, or the memory 609 may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 609 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0748] Processor 610 may include one or more processing units. Optionally, processor 610 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 610.

[0749] The processor 610 is configured to:

[0750] Execute the target operation based on the RLF prediction result;

[0751] The target operation includes at least one of the following:

[0752] Starting a first timer, where the first timer is used for the predicted RLF;

[0753] Perform relevant processing of the predicted RLF;

[0754] Perform operations related to counter N310;

[0755] Perform operations related to the counter N311.

[0756] Optionally, the processing related to the predicted RLF includes at least one of the following:

[0757] Selecting a target cell, the target cell being used for a predicted RLF recovery process or a predicted RLF re-establishment process;

[0758] Execute the recovery process of the predicted RLF;

[0759] Performing a predicted RLF re-establishment procedure;

[0760] Reports information related to predicted RLF.

[0761] Optionally, the duration of the first timer is determined by the terminal based on a predicted RLF occurrence time; or, the duration of the first timer is configured by a network-side device.

[0762] Optionally, the duration of the first timer is the difference between the duration of the start time of the first timer and the predicted RLF occurrence time and an offset.

[0763] Optionally, when the first timer is started, if timer T310 times out, the terminal ignores the timeout of timer T310; or

[0764] When the first timer is started, if timer T312 times out, the terminal ignores the timeout of timer T312; or

[0765] When the first timer is started, the terminal does not start timer T310 or timer T312; or

[0766] When the timer T310 or the timer T312 is running, the first timer is not started.

[0767] Optionally, when the first timer is started, the apparatus further includes:

[0768] a stopping module, configured to, when the terminal satisfies a first condition, stop the first timer by the terminal;

[0769] The first condition includes at least one of the following:

[0770] The terminal receives first configuration information sent by the network side device;

[0771] The terminal initiates a re-establishment process of a predicted RLF;

[0772] Timer T310 times out;

[0773] Timer T312 times out.

[0774] Optionally, the processing related to the predicted RLF includes:

[0775] When the target timer times out, perform related processing of the predicted RLF;

[0776] The target timer includes at least one of the following: a first timer; a timer T310; and a timer T312.

[0777] Optionally, when the related processing of the predicted RLF includes selecting a target cell, the selected target cell includes at least one of the following:

[0778] Conditional handover candidate cells;

[0779] Candidate cells for predicted RLF configured by the network;

[0780] Cells selected based on predicted measurement results;

[0781] The cell is determined based on the predicted probability of RLF.

[0782] Optionally, the conditional handover candidate cell includes at least one of the following:

[0783] The predicted execution condition is satisfied and the candidate cell is switched;

[0784] allowing the terminal to attempt a conditional handover candidate cell during a recovery process of a predicted RLF;

[0785] The terminal is allowed to attempt a conditional handover candidate cell during a re-establishment process of a predicted RLF.

[0786] Optionally, when the performing the related processing of the predicted RLF includes reporting the related information of the predicted RLF, the reporting the related information of the predicted RLF includes:

[0787] Sending a first message to a network-side device, where the first message carries relevant information about the predicted RLF;

[0788] The predicted RLF related information includes at least one of the following:

[0789] first indication information, where the first indication information is used to indicate that a predicted RLF has occurred;

[0790] second indication information, where the second indication information is used to indicate that the first message is associated with a predicted RLF recovery procedure or a predicted RLF re-establishment procedure;

[0791] third indication information, where the third indication information is used to indicate that the first timer has timed out;

[0792] fourth indication information, where the fourth indication information is used to indicate a cause of the predicted RLF;

[0793] Predict measurement results.

[0794] Optionally, the fourth indication information indicates at least one of the following:

[0795] Predicting a radio link failure; or, predicting that the number of out-of-sync indications received reaches the value of counter N310; or, predicting that timer T310 times out; or, predicting that timer T312 times out;

[0796] Predicting failure of the MAC layer random access procedure;

[0797] A radio link control RLC failure is predicted, where the RLC failure is caused by retransmission at the RLC layer reaching a maximum number of retransmissions.

[0798] Optionally, the sending the first message to the network side device includes:

[0799] When the target timer times out and the terminal meets the second condition, sending the first message to the network side device;

[0800] The target timer includes at least one of the following: a first timer; a timer T310; a timer T312;

[0801] The second condition includes at least one of the following:

[0802] The terminal is configured with multi-radio dual connectivity MR-DC;

[0803] The primary cell group MCG or the secondary cell group SCG of the terminal is not suspended;

[0804] Timer T310 is not running or has not timed out;

[0805] Timer T312 is not running or has not timed out.

[0806] Optionally, the sending the first message to the network side device includes:

[0807] If the target timer is held by the MCG, sending the first message to the network side device through the SCG; or

[0808] If the target timer is held by the SCG, the first message is sent to the network side device through the MCG.

[0809] Optionally, the processor 610 is further configured to:

[0810] Starting a second timer, where the second timer is used for a recovery process of the predicted RLF;

[0811] When the second configuration message sent by the network side device is received, the second timer is stopped.

[0812] Optionally, the processor 610 is further configured to: when the second timer times out, perform at least one of the following operations:

[0813] Performing a predicted RLF re-establishment procedure;

[0814] Stop the running timer T304, timer T310, or timer T312;

[0815] Perform radio resource control (RRC) connection re-establishment procedure;

[0816] Enter the idle or inactive state.

[0817] Optionally, when the performing the related processing of the predicted RLF includes executing a re-establishment process of the predicted RLF, the executing the re-establishment process of the predicted RLF includes:

[0818] A second message is sent to the network side device based on the selected target cell, where the second message is used to request re-establishment of the predicted RLF.

[0819] Optionally, the first execution module is further configured to:

[0820] Starting a third timer, where the third timer is used for a re-establishment process of a predicted RLF;

[0821] If the target cell is successfully selected, stop the third timer; or

[0822] When the third timer times out, the terminal enters an idle state or an inactive state.

[0823] Optionally, the performing operations related to the counter N310 includes at least one of the following:

[0824] In case of the received synchronization indication, if the third condition is met, the terminal resets the N310;

[0825] In case of the received synchronization indication, if the fourth condition is met, the terminal does not reset the N310;

[0826] In case of receiving the out-of-sync indication, if the third condition is met, the terminal does not increase the N310;

[0827] In case of receiving the out-of-sync indication, if the fourth condition is met, the terminal increases the N310;

[0828] in,

[0829] The third condition includes at least one of the following:

[0830] The RLF prediction result indicates that RLF is not predicted to occur; the first timer is not running;

[0831] The fourth condition includes at least one of the following:

[0832] The RLF prediction result indicates that an RLF is predicted to occur; and the first timer is running.

[0833] Optionally, the performing of operations related to the counter N311 includes at least one of the following:

[0834] Upon receiving the synchronization indication, if the fifth condition is met, the terminal increases the N311;

[0835] When receiving the synchronization indication, if the sixth condition is met, the terminal does not increase the N311;

[0836] In the case of receiving the out-of-sync indication, if the fifth condition is met, the terminal does not reset the N311;

[0837] Upon receiving the out-of-sync indication, if a sixth condition is met, the terminal resets N311;

[0838] in,

[0839] The fifth condition includes at least one of the following:

[0840] The RLF prediction result indicates that RLF is not predicted to occur; the first timer is not running;

[0841] The sixth condition includes at least one of the following:

[0842] The RLF prediction result indicates that an RLF is predicted to occur; and the first timer is running.

[0843] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment Figure 6, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0844] Specifically, the terminal of the embodiment of the present application also includes: instructions or programs stored in the memory 609 and can be run on the processor 610. The processor 610 calls the instructions or programs in the memory 609 to execute the methods executed by each module shown in Figure 7 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0845] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG7 . This network-side device embodiment corresponds to the aforementioned RLF prediction and reporting method embodiment applied to a core network device, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0846] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 12, the network-side device 700 includes an antenna 701, a radio frequency device 702, a baseband device 703, a processor 704, and a memory 705. Antenna 701 is connected to radio frequency device 702. In the uplink direction, radio frequency device 702 receives information via antenna 701 and sends the received information to baseband device 703 for processing. In the downlink direction, baseband device 703 processes the information to be transmitted and sends it to radio frequency device 702. Radio frequency device 702 processes the received information and then sends it through antenna 701.

[0847] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 703 , which includes a baseband processor.

[0848] The baseband device 703 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 12, one of which is, for example, a baseband processor, which is connected to the memory 705 through a bus interface to call the program in the memory 705 and execute the network device operations shown in the above method embodiment.

[0849] The network side device may further include a network interface 706 , which is, for example, a Common Public Radio Interface (CPRI).

[0850] Specifically, the network side device 700 of the embodiment of the present application also includes: instructions or programs stored in the memory 705 and can be run on the processor 704. The processor 704 calls the instructions or programs in the memory 705 to execute the method of execution of each module shown in Figure 9 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0851] An embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned RLF prediction processing method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0852] The processor is the processor in the terminal or network-side device described in the above embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0853] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned RLF prediction processing method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0854] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0855] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-mentioned RLF prediction processing method embodiment, and can achieve the same technical effects. To avoid repetition, they are not described here.

[0856] An embodiment of the present application further provides a system for processing RLF prediction, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the processing method for RLF prediction applied to the terminal as described above.

[0857] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0858] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for causing a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0859] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A method for processing radio link failure (RLF) prediction, comprising: The terminal performs the target operation according to the RLF prediction result; The target operation includes at least one of the following: Starting a first timer, where the first timer is used for the predicted RLF; Perform relevant processing of the predicted RLF; Perform operations related to counter N310; Perform operations related to the counter N311.

2. The method according to claim 1, wherein The processing related to the predicted RLF includes at least one of the following: Selecting a target cell, the target cell being used for a predicted RLF recovery process or a predicted RLF re-establishment process; Execute the recovery process of the predicted RLF; Performing a predicted RLF re-establishment procedure; Reports information related to predicted RLF.

3. The method according to claim 1 or 2, wherein: The duration of the first timer is determined by the terminal based on a predicted RLF occurrence time; or, the duration of the first timer is configured by a network-side device.

4. The method according to claim 3, wherein: The duration of the first timer is the difference between the duration of the start time of the first timer and the predicted RLF occurrence time and the offset.

5. The method according to any one of claims 1 to 4, wherein When the first timer is enabled, if timer T310 times out, the terminal ignores the timeout of timer T310; or When the first timer is started, if timer T312 times out, the terminal ignores the timeout of timer T312; or When the first timer is started, the terminal does not start timer T310 or timer T312; or When the timer T310 or the timer T312 is running, the first timer is not started.

6. The method according to any one of claims 1 to 5, wherein When the first timer is started, the method further includes: When the terminal meets a first condition, the terminal stops the first timer; The first condition includes at least one of the following: The terminal receives first configuration information sent by the network side device; The terminal initiates a re-establishment process of a predicted RLF; Timer T310 times out; Timer T312 times out.

7. The method according to any one of claims 1 to 6, wherein The related processing of the predicted RLF includes: When the target timer times out, perform related processing of the predicted RLF; The target timer includes at least one of the following: a first timer; a timer T310; and a timer T312.

8. The method according to any one of claims 1 to 7, wherein In the case where the processing related to the predicted RLF includes selecting a target cell, the selected target cell includes at least one of the following: Conditional handover candidate cells; Candidate cells for predicted RLF configured by the network; Cells selected based on predicted measurement results; The cell is determined based on the predicted probability of RLF.

9. The method according to claim 8, wherein The conditional handover candidate cell includes at least one of the following: The predicted execution condition is satisfied and the candidate cell is switched; allowing the terminal to attempt a conditional handover candidate cell during a recovery process of a predicted RLF; The terminal is allowed to attempt a conditional handover candidate cell during a re-establishment process of a predicted RLF.

10. The method according to any one of claims 1 to 9, wherein In a case where the performing the processing related to the predicted RLF includes reporting the related information of the predicted RLF, the reporting the related information of the predicted RLF includes: Sending a first message to a network-side device, where the first message carries relevant information about the predicted RLF; The predicted RLF related information includes at least one of the following: first indication information, where the first indication information is used to indicate that a predicted RLF has occurred; second indication information, where the second indication information is used to indicate that the first message is associated with a predicted RLF recovery procedure or a predicted RLF re-establishment procedure; third indication information, where the third indication information is used to indicate that the first timer has timed out; fourth indication information, where the fourth indication information is used to indicate a cause of the predicted RLF; Predict measurement results.

11. The method according to claim 10, wherein: The fourth indication information indicates at least one of the following: Predicting a radio link failure; or, predicting that the number of out-of-sync indications received reaches the value of counter N310; or, predicting that timer T310 times out; or, predicting that timer T312 times out; Predicting failure of the MAC layer random access procedure; A radio link control RLC failure is predicted, where the RLC failure is caused by retransmission at the RLC layer reaching a maximum number of retransmissions.

12. The method according to claim 10 or 11, wherein: The sending the first message to the network side device includes: When the target timer times out and the terminal meets the second condition, sending the first message to the network side device; The target timer includes at least one of the following: a first timer; a timer T310; a timer T312; The second condition includes at least one of the following: The terminal is configured with multi-radio dual connectivity MR-DC; The primary cell group MCG or the secondary cell group SCG is not suspended; Timer T310 is not running or has not timed out; Timer T312 is not running or has not timed out.

13. The method according to any one of claims 10 to 12, wherein: The sending the first message to the network side device includes: If the target timer is held by the MCG, the terminal sends the first message to the network side device through the SCG; or If the target timer is held by the SCG, the terminal sends the first message to the network side device through the MCG.

14. The method according to any one of claims 10 to 13, wherein: After sending the first message to the network side device, the method further includes: The terminal starts a second timer, where the second timer is used for a recovery process of a predicted RLF; Upon receiving the second configuration message sent by the network-side device, the terminal stops the second timer.

15. The method according to claim 14, wherein The method further comprises: When the second timer times out, the terminal performs at least one of the following operations: Performing a predicted RLF re-establishment procedure; Stop the running timer T304, timer T310, or timer T312; Perform radio resource control (RRC) connection re-establishment procedure; Enter the idle or inactive state.

16. The method according to any one of claims 10 to 15, wherein Before sending the first message to the network side device, the method further includes: The terminal receives third configuration information sent by the network-side device, where the third configuration information includes at least one of the following: fifth indication information, used to indicate the duration of the first timer; Sixth indication information, used to indicate an offset used to set the duration of the first timer; The seventh indication information is used to indicate the duration of the second timer; Eighth indication information, used to indicate the duration of the third timer; ninth indication information, used to indicate that the terminal enters an idle state or an inactive state when the third timer times out; Tenth indication information, used to indicate a conditional handover candidate cell; Eleventh indication information, used to indicate a candidate cell for predicted RLF; Twelfth indication information is used to indicate that cell selection is allowed based on the predicted measurement result; Thirteenth indication information is used to indicate a cell determined according to the predicted RLF probability; Fourteenth indication information, used to indicate that operations related to the counter N310 are permitted; The fifteenth indication information is used to indicate that operations related to the counter N311 are allowed.

17. The method according to any one of claims 1 to 16, wherein: In a case where the performing of the related processing of the predicted RLF includes executing a re-establishment process of the predicted RLF, the executing of the re-establishment process of the predicted RLF includes: A second message is sent to the network side device based on the selected target cell, where the second message is used to request re-establishment of the predicted RLF.

18. The method according to claim 17, wherein The method further comprises: Starting a third timer, where the third timer is used for a re-establishment process of a predicted RLF; If the target cell is successfully selected, stop the third timer; or When the third timer times out, the terminal enters an idle state or an inactive state.

19. The method according to any one of claims 1 to 18, wherein The performing of operations related to the counter N310 includes at least one of the following: Upon receiving the synchronization indication, if a third condition is met, the terminal resets N310; When receiving the synchronization indication, if the fourth condition is met, the terminal does not reset the N310; In the case of receiving the out-of-sync indication, if the third condition is met, the terminal does not increase the N310; Upon receiving the out-of-sync indication, if a fourth condition is met, the terminal increases the N310; in, The third condition includes at least one of the following: The RLF prediction result indicates that RLF is not predicted to occur; the first timer is not running; The fourth condition includes at least one of the following: The RLF prediction result indicates that an RLF is predicted to occur; and the first timer is running.

20. The method according to any one of claims 1 to 19, wherein The performing of operations related to the counter N311 includes at least one of the following: Upon receiving the synchronization indication, if the fifth condition is met, the terminal increases the N311; When receiving the synchronization indication, if the sixth condition is met, the terminal does not increase the N311; In the case of receiving the out-of-sync indication, if the fifth condition is met, the terminal does not reset the N311; Upon receiving the out-of-sync indication, if a sixth condition is met, the terminal resets N311; in, The fifth condition includes at least one of the following: The RLF prediction result indicates that RLF is not predicted to occur; the first timer is not running; The sixth condition includes at least one of the following: The RLF prediction result indicates that an RLF is predicted to occur; and the first timer is running.

21. A method for processing radio link failure (RLF) prediction, comprising: The network side device receives a first message sent by the terminal, where the first message carries relevant information about the predicted RLF; The predicted RLF related information includes at least one of the following: first indication information, where the first indication information is used to indicate that a predicted RLF has occurred; second indication information, where the second indication information is used to indicate that the first message is associated with a predicted RLF recovery procedure or a predicted RLF re-establishment procedure; third indication information, where the third indication information is used to indicate that the first timer has timed out; fourth indication information, where the fourth indication information is used to indicate a cause of the predicted RLF; Predict measurement results.

22. The method according to claim 21, wherein The network side device receives a first message sent by the terminal, including: The network side device receives the first message sent by the terminal through the SCG; the first message is associated with the MCG; or The network side device receives the first message sent by the terminal through the MCG; the first message is associated with the SCG.

23. The method according to claim 21 or 22, wherein Before the network side device receives the first message sent by the terminal, the method further includes: The network-side device sends third configuration information to the terminal, where the third configuration information includes at least one of the following: fifth indication information, used to indicate the duration of the first timer; Sixth indication information, used to indicate an offset used to set the duration of the first timer; The seventh indication information is used to indicate the duration of the second timer; Eighth indication information, used to indicate the duration of the third timer; ninth indication information, used to indicate that the terminal enters an idle state or an inactive state when the third timer times out; Tenth indication information, used to indicate a conditional handover candidate cell; Eleventh indication information, used to indicate a candidate cell for predicted RLF; Twelfth indication information is used to indicate that cell selection is allowed based on the predicted measurement result; Thirteenth indication information is used to indicate a cell determined according to the predicted RLF probability; Fourteenth indication information, used to indicate that operations related to the counter N310 are permitted; The fifteenth indication information is used to indicate that operations related to the counter N311 are allowed.

24. The method according to claim 23, wherein The conditional handover candidate cell includes at least one of the following: The predicted execution condition is satisfied and the candidate cell is switched; allowing the terminal to attempt a conditional handover candidate cell during a recovery process of a predicted RLF; The terminal is allowed to attempt a conditional handover candidate cell during a re-establishment process of a predicted RLF.

25. The method according to any one of claims 21 to 24, wherein After the network-side device receives the first message sent by the terminal, the method further includes: The network side device sends second configuration information to the terminal, where the second configuration information is used for cell switching or RRC reconfiguration.

26. A processing device for radio link failure (RLF) prediction, comprising: A first execution module, configured to execute a target operation according to the RLF prediction result; The target operation includes at least one of the following: Starting a first timer, where the first timer is used for the predicted RLF; Perform relevant processing of the predicted RLF; Perform operations related to counter N310; Perform operations related to the counter N311.

27. The device according to claim 26, wherein The processing related to the predicted RLF includes at least one of the following: Selecting a target cell, the target cell being used for a predicted RLF recovery process or a predicted RLF re-establishment process; Execute the recovery process of the predicted RLF; Performing a predicted RLF re-establishment procedure; Reports information related to predicted RLF.

28. The apparatus according to claim 27, wherein In a case where the performing the processing related to the predicted RLF includes reporting the related information of the predicted RLF, the reporting the related information of the predicted RLF includes: Sending a first message to a network-side device, where the first message carries relevant information about the predicted RLF; The predicted RLF related information includes at least one of the following: first indication information, where the first indication information is used to indicate that a predicted RLF has occurred; second indication information, where the second indication information is used to indicate that the first message is associated with a predicted RLF recovery procedure or a predicted RLF re-establishment procedure; third indication information, where the third indication information is used to indicate that the first timer has timed out; fourth indication information, where the fourth indication information is used to indicate a cause of the predicted RLF; Predict measurement results.

29. The apparatus according to claim 28, wherein The sending the first message to the network side device includes: When the target timer times out and the terminal meets the second condition, sending the first message to the network side device; The target timer includes at least one of the following: a first timer; a timer T310; a timer T312; The second condition includes at least one of the following: The terminal is configured with multi-radio dual connectivity MR-DC; The primary cell group MCG or the secondary cell group SCG is not suspended; Timer T310 is not running or has not timed out; Timer T312 is not running or has not timed out.

30. The device according to claim 28 or 29, wherein The first execution module is further configured to: Starting a second timer, where the second timer is used for a recovery process of the predicted RLF; When the second configuration message sent by the network side device is received, the second timer is stopped.

31. The apparatus according to claim 30, wherein The device further comprises: The second execution module is configured to perform at least one of the following operations when the second timer times out: Performing a predicted RLF re-establishment procedure; Stop the running timer T304, timer T310, or timer T312; Perform radio resource control (RRC) connection re-establishment procedure; Enter the idle or inactive state.

32. The device according to any one of claims 26 to 31, wherein: The device further comprises: A receiving module, configured to receive third configuration information sent by a network-side device, where the third configuration information includes at least one of the following: fifth indication information, used to indicate the duration of the first timer; Sixth indication information, used to indicate an offset used to set the duration of the first timer; The seventh indication information is used to indicate the duration of the second timer; Eighth indication information, used to indicate the duration of the third timer; Ninth indication information, used to indicate that when the third timer times out, the terminal enters an idle state or an inactive state; Tenth indication information, used to indicate a conditional handover candidate cell; Eleventh indication information, used to indicate a candidate cell for predicted RLF; Twelfth indication information is used to indicate that cell selection is allowed based on the predicted measurement result; Thirteenth indication information is used to indicate a cell determined according to the predicted RLF probability; Fourteenth indication information, used to indicate that operations related to the counter N310 are permitted; The fifteenth indication information is used to indicate that operations related to the counter N311 are allowed.

33. The device according to any one of claims 26 to 32, wherein: In a case where the performing of the related processing of the predicted RLF includes executing a re-establishment process of the predicted RLF, the executing of the re-establishment process of the predicted RLF includes: A second message is sent to the network side device based on the selected target cell, where the second message is used to request re-establishment of the predicted RLF.

34. The apparatus according to claim 33, wherein The first execution module is further configured to: Starting a third timer, where the third timer is used for a re-establishment process of a predicted RLF; If the target cell is successfully selected, stop the third timer; or When the third timer times out, the terminal enters an idle state or an inactive state.

35. A processing device for radio link failure (RLF) prediction, comprising: a receiving module, configured to receive a first message sent by a terminal, where the first message carries relevant information about a predicted RLF; The predicted RLF related information includes at least one of the following: first indication information, where the first indication information is used to indicate that a predicted RLF has occurred; second indication information, where the second indication information is used to indicate that the first message is associated with a predicted RLF recovery procedure or a predicted RLF re-establishment procedure; third indication information, where the third indication information is used to indicate that the first timer has timed out; fourth indication information, where the fourth indication information is used to indicate a cause of the predicted RLF; Predict measurement results.

36. The apparatus of claim 35, wherein: The receiving module is specifically used for: The first message sent by the terminal is received through the SCG; the first message is associated with the MCG; or The first message sent by the terminal is received through the MCG; the first message is associated with the SCG.

37. The apparatus according to claim 35 or 36, wherein The device further comprises: A first sending module is configured to send third configuration information to the terminal, where the third configuration information includes at least one of the following: fifth indication information, used to indicate the duration of the first timer; Sixth indication information, used to indicate an offset used to set the duration of the first timer; The seventh indication information is used to indicate the duration of the second timer; Eighth indication information, used to indicate the duration of the third timer; ninth indication information, used to indicate that the terminal enters an idle state or an inactive state when the third timer times out; Tenth indication information, used to indicate a conditional handover candidate cell; Eleventh indication information, used to indicate a candidate cell for predicted RLF; Twelfth indication information is used to indicate that cell selection is allowed based on the predicted measurement result; Thirteenth indication information is used to indicate a cell determined according to the predicted RLF probability; Fourteenth indication information, used to indicate that operations related to the counter N310 are permitted; The fifteenth indication information is used to indicate that operations related to the counter N311 are allowed.

38. A terminal comprising a processor and a memory, wherein the memory stores a program or instruction executable on the processor, and wherein when the program or instruction is executed by the processor, the steps of the RLF prediction processing method according to any one of claims 1 to 20 are implemented.

39. A network-side device comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the RLF prediction processing method according to any one of claims 21 to 25 are implemented.

40. A chip, comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instruction to implement the steps of the RLF prediction processing method according to any one of claims 1 to 20, or the steps of the RLF prediction processing method according to any one of claims 21 to 25.

41. A readable storage medium storing a program or instruction, wherein when the program or instruction is executed by a processor, the program or instruction implements the steps of the RLF prediction processing method according to any one of claims 1 to 20, or implements the steps of the RLF prediction processing method according to any one of claims 21 to 25.

42. A computer program / program product, which, when executed by at least one processor, implements the steps of the RLF prediction processing method according to any one of claims 1 to 20, or implements the steps of the RLF prediction processing method according to any one of claims 21 to 25.

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