Radio link failure (RLF) prediction reporting method and apparatus, and related device

Abstract

The present application relates to the technical field of communications, and discloses a radio link failure (RLF) prediction reporting method and apparatus, and a related device. The method in embodiments of the present application comprises: a terminal sends a first message to a network side device, the first message carrying RLF prediction related information, wherein the RLF prediction related information comprises at least one of the following: an RLF prediction result; related information of a timer associated with RLF prediction; a predicted random access failure probability; a predicted probability that the retransmission of a radio link control (RLC) layer reaches the maximum number of retransmissions; and a predicted measurement result of RLF occurrence time prediction.

Description

Radio link failure (RLF) prediction and reporting method, device, and related equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202410395986.0 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, apparatus and related equipment for predicting and reporting a radio link failure (RLF). Background Art

[0004] In related technologies, connected terminals perform radio link monitoring (RLM) based on reference signal measurements and network-configured reference signal quality thresholds. When certain conditions are met, a radio link failure (RLF) is determined to have occurred. However, these technologies only reestablish a connection or report failure information after an RLF has occurred, resulting in significant delays in RLF handling and poor RLF handling effectiveness. Summary of the Invention

[0005] The embodiments of the present application provide a radio link failure (RLF) prediction and reporting method, apparatus, and related equipment, which can solve the problem of poor RLF processing effect.

[0006] In a first aspect, a method for predicting and reporting a radio link failure (RLF) is provided, comprising:

[0007] The terminal sends a first message to the network-side device, where the first message carries relevant information about RLF prediction, where the relevant information about RLF prediction includes at least one of the following:

[0008] RLF prediction results;

[0009] Information about timers associated with RLF prediction;

[0010] Predicted probability of random access failure;

[0011] The predicted probability that the RLC layer retransmission reaches the maximum number of retransmissions;

[0012] Prediction measurement results for predicting when RLF will occur.

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

[0014] The network-side device receives a first message sent by the terminal, where the first message carries relevant information about RLF prediction, where the relevant information about RLF prediction includes at least one of the following:

[0015] RLF prediction results;

[0016] Information about timers associated with RLF prediction;

[0017] Predicted probability of random access failure;

[0018] The predicted probability that the RLC layer retransmission reaches the maximum number of retransmissions;

[0019] Prediction measurement results for predicting when RLF will occur.

[0020] In a third aspect, a RLF prediction and reporting device is provided, comprising:

[0021] A first sending module is configured to send a first message to a network-side device, where the first message carries relevant information about RLF prediction, wherein the relevant information about RLF prediction includes at least one of the following:

[0022] RLF prediction results;

[0023] Information about timers associated with RLF prediction;

[0024] Predicted probability of random access failure;

[0025] The predicted probability that the RLC layer retransmission reaches the maximum number of retransmissions;

[0026] Prediction measurement results for predicting when RLF will occur.

[0027] In a fourth aspect, a RLF prediction and reporting device is provided, including:

[0028] A first receiving module is configured to receive a first message sent by a terminal, where the first message carries relevant information about RLF prediction, wherein the relevant information about RLF prediction includes at least one of the following:

[0029] RLF prediction results;

[0030] Information about timers associated with RLF prediction;

[0031] Predicted probability of random access failure;

[0032] The predicted probability that the RLC layer retransmission reaches the maximum number of retransmissions;

[0033] Prediction measurement results for predicting when RLF will occur.

[0034] 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.

[0035] In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is configured to:

[0036] Send a first message to the network side device, where the first message carries relevant information about the RLF prediction, where the relevant information about the RLF prediction includes at least one of the following:

[0037] RLF prediction results;

[0038] Information about timers associated with RLF prediction;

[0039] Predicted probability of random access failure;

[0040] The predicted probability that the RLC layer retransmission reaches the maximum number of retransmissions;

[0041] Prediction measurement results for predicting when RLF will occur.

[0042] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0043] In an eighth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is configured to:

[0044] A first message sent by a receiving terminal is received, where the first message carries relevant information about RLF prediction, where the relevant information about RLF prediction includes at least one of the following:

[0045] RLF prediction results;

[0046] Information about timers associated with RLF prediction;

[0047] Predicted probability of random access failure;

[0048] The predicted probability that the RLC layer retransmission reaches the maximum number of retransmissions;

[0049] Prediction measurement results for predicting when RLF will occur.

[0050] In the ninth aspect, a RLF prediction and reporting system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network-side device can be used to execute the steps of the method described in the second aspect.

[0051] In the tenth 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.

[0052] In the eleventh aspect, a chip is provided, 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 method as described in the first aspect, or to implement the method as described in the second aspect.

[0053] In the twelfth 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.

[0054] In an embodiment of the present application, the terminal sends a first message to the network side device, and the first message carries relevant information of the RLF prediction. In this way, the terminal can report the relevant information of the RLF prediction to the network side device before the RLF occurs, and the terminal can handle possible RLF in a timely manner, thereby improving the RLF processing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0056] FIG2 is a schematic diagram of a neural network in the related art;

[0057] FIG3 is a schematic diagram of a neuron in the related art;

[0058] FIG4 is a schematic diagram of an AI / ML functional framework for an NR air interface in the related art;

[0059] FIG5 is a flowchart of a RLF prediction and reporting method provided in an embodiment of the present application;

[0060] FIG6 is a schematic diagram of a terminal movement provided in an embodiment of the present application;

[0061] FIG7 is a schematic diagram of an RLF prediction report provided in an embodiment of the present application;

[0062] FIG8 is a second flowchart of a RLF prediction and reporting method provided in an embodiment of the present application;

[0063] FIG9 is a structural diagram of a RLF prediction and reporting device according to an embodiment of the present application;

[0064] FIG10 is a second structural diagram of an RLF prediction and reporting device provided in an embodiment of the present application;

[0065] FIG11 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0066] FIG12 is a schematic structural diagram of a terminal provided in an embodiment of the present application;

[0067] FIG13 is a schematic structural diagram of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] For ease of understanding, some terms involved in the embodiments of this application are explained below:

[0075] 1. Radio Link Failure (RLF)

[0076] 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:

[0077] The T310 timer, which is started after the physical layer indicates a problem with the radio link (indicates N310 times of "out-of-sync"), expires;

[0078] 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;

[0079] The Medium Access Control (MAC) layer random access procedure fails;

[0080] The maximum number of retransmissions at the Radio Link Control (RLC) layer reaches the upper limit, causing RLC failure.

[0081] 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.

[0082] 2. Timer / Counter

[0083] In the 5th Generation Mobile Communication Technology (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.

[0084] The timer specifically includes the following:

[0085] T300: Timer during which the UE waits for a Radio Resource Control (RRC) connection response.

[0086] T301: Timer during which the UE waits for the RRC re-establishment process;

[0087] T304: Timer for UE to randomly access a special cell (SpCell);

[0088] T310: Timer for UE to monitor radio link failure (RLF);

[0089] T311: The timer for the UE to switch to the idle state after detecting RLF;

[0090] T312: Timer for fast switching failure recovery;

[0091] T316: Timer for fast Master Cell Group (MCG) link recovery;

[0092] T319: Timer during which the UE waits for an RRC connection recovery response;

[0093] beamFailureDetectionTimer: timer used for beam failure detection process;

[0094] beamFailureRecoveryTimer: Timer for beam failure recovery.

[0095] 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:

[0096] Timer T304:

[0097] Timer start conditions: When the UE receives an RRC reconfiguration message carrying reconfigurationWithSync, or performs conditional reconfiguration;

[0098] 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;

[0099] 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 that reconfiguration with sync failed.

[0100] Timer T310:

[0101] 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;

[0102] 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;

[0103] 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.

[0104] Timer T312:

[0105] 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;

[0106] 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.

[0107] 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.

[0108] The counters specifically include the following:

[0109] N310: counter that controls the start time of T310;

[0110] N311: counter that controls the stop time of T310;

[0111] beamFailureInstanceMaxCount: A counter that controls when Beam Failure Recovery (BFR) is triggered.

[0112] The reset and increment times of N310 and N311, as well as the actions after reaching the maximum value, are shown in Table 1:

[0113] Table 1

[0114] The "out-of-sync" and "in-sync" instructions are explained as follows:

[0115] 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.

[0116] 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:

[0117] Table 2

[0118] 3. Artificial Intelligence (AI)

[0119] 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.

[0120] A neural network diagram is shown in Figure 2:

[0121] A neural network is composed of neurons, as shown in Figure 3. 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).

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 3.1 AI Unit / AI Model

[0127] 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.

[0128] 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.

[0129] AI functionality: refers to an AI algorithm function that can include multiple AI models.

[0130] 3.2 AI / ML Framework

[0131] The Air Interface AI project of Release 18 studied the AI / ML framework, and the main process is shown in Figure 4.

[0132] Data Collection: Responsible for providing input data for Model Training, Management, and Inference;

[0133] 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.

[0134] Management: responsible for model selection / activation / deactivation / switching / rollback, etc.

[0135] Inference: Responsible for providing the output after applying the AI / ML model or AI / ML function;

[0136] Model Storage: responsible for saving trained / updated models;

[0137] Model Transfer / Delivery: Responsible for delivering the AI / ML model to the inference function node.

[0138] 4. Radio resource management (RRM) measurement reporting

[0139] The measurement configuration mainly consists of the measurement object, reporting configuration and measurement ID;

[0140] Measurement Object: The frequency point to be measured;

[0141] Report Configuration (ReportConfig): Associated reporting criteria (periodic / event-triggered); Reference Signal Type (SSB / CSI-RS), measurement reporting quantity (such as any combination of Reference Signal Received Power (RSRP) / Reference Signal Received Quality (RSRQ) / Signal-to-noise and interference ratio (SINR)); whether to report beam measurement results, the maximum number of reportable beams, etc.

[0142] 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.

[0143] In NR, measurement objects, reporting configurations, and measurement IDs are associated as follows:

[0144] In the reporting configuration, you can associate events to trigger reporting. The events defined in NR are shown in Table 3:

[0145] Table 3

[0146] Taking the A3 event as an example, the meanings of the parameters for the entry and exit conditions are as follows:

[0147] Mn: Neighboring cell measurement result, without considering any offset;

[0148] Ofn: Neighborhood measurement object specific offset;

[0149] Ocn: Neighboring cell-level specific offset;

[0150] Mp: SpCell (primary serving cell) measurement result, without considering any offset;

[0151] Ofp: SpCell measurement object specific offset;

[0152] Ocp: SpCell cell-level specific offset;

[0153] Hys: hysteresis parameter of the event;

[0154] Off: The offset parameter of the event.

[0155] 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.

[0156] The following, in conjunction with the accompanying drawings, describes in detail the radio link failure (RLF) prediction and reporting method, apparatus, and related equipment provided by the embodiments of the present application through some embodiments and their application scenarios.

[0157] 5 , which is a flowchart of a method for predicting and reporting a radio link failure (RLF) according to an embodiment of the present application. As shown in FIG5 , the method for predicting and reporting a radio link failure (RLF) includes the following steps:

[0158] Step 101: The terminal sends a first message to a network-side device, where the first message carries relevant information about RLF prediction.

[0159] Optionally, the relevant information for RLF prediction includes at least one of the following:

[0160] RLF prediction results;

[0161] Information about timers associated with RLF prediction;

[0162] Predicted probability of random access failure;

[0163] The predicted probability that the retransmission of the radio link control (RLC) layer reaches the maximum number of retransmissions;

[0164] Prediction measurement results for predicting when RLF will occur.

[0165] 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. Alternatively, 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. Alternatively, 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 embodiments of the present application do not limit the specific form of the RLF prediction result.

[0166] 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.

[0167] 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).

[0168] The predicted measurement result for predicting the RLF occurrence time can be understood or replaced by a measurement result predicted at the predicted RLF occurrence time. The predicted measurement result for predicting the RLF occurrence time 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.

[0169] In one implementation, the terminal performs RLF prediction and sends a first message to a network-side device, where the first message carries relevant information about the RLF prediction.

[0170] In one embodiment, the network side device may be a network side device corresponding to a primary cell group MCG, or a network side device corresponding to a secondary cell group SCG of the terminal. Optionally, the network side device corresponding to the MCG may be a master node (MN) or a primary base station, and the network side device corresponding to the SCG may be a secondary node (SN) or a secondary base station.

[0171] In one embodiment, the terminal sends a first message to a network side device, where the first message carries an RLF prediction result, so that the network side device can know in advance whether the terminal may experience RLF through the RLF prediction result, and can reconfigure the terminal when RLF is likely to occur in the terminal, so that the terminal can perform cell switching in advance, thereby improving system communication performance.

[0172] In one embodiment, the terminal sends a first message to a network side device, where the first message carries relevant information of a timer associated with RLF prediction, so that the network side device can obtain the time urgency of the occurrence of RLF in the terminal through the relevant information of the timer associated with RLF prediction, thereby facilitating the network side device to reconfigure the terminal in a timely manner, so that the terminal can perform cell switching in advance, thereby improving the system communication performance.

[0173] In one embodiment, the terminal sends a first message to a network side device, where the first message carries a predicted probability of random access failure, so that the network side device can learn the probability that the terminal may experience random access failure through the predicted probability of random access failure, facilitating the network side device to reconfigure the terminal in a timely manner, so that the terminal can perform cell switching in advance, thereby improving system communication performance.

[0174] In one embodiment, the terminal sends a first message to a network side device, where the first message carries a predicted probability that the retransmission of the radio link control RLC layer reaches the maximum number of retransmissions, so that the network side device can obtain the probability that the terminal may have the RLC layer retransmission reach the maximum number of retransmissions through the predicted probability that the retransmission of the radio link control RLC layer reaches the maximum number of retransmissions, which facilitates the network side device to reconfigure the terminal in a timely manner, so that the terminal can perform cell switching in advance, thereby improving the system communication performance.

[0175] In one embodiment, the terminal sends a first message to a network side device, where the first message carries a predicted measurement result of a predicted RLF occurrence time, so that the network side device can provide the terminal with appropriate reconfiguration based on the predicted measurement result of the predicted RLF occurrence time, thereby improving the system communication performance.

[0176] It should be noted that the relevant technologies specify how terminals perform RLM measurements and RLF determinations, as well as their actions after RLF is triggered. RLF determinations are based on statically configured counters and timers, and the process of waiting for a timer to expire or a counter to reach a threshold will also prolong the time it takes to execute the next action.

[0177] Related technologies introduce AI / ML-assisted mobility enhancement, including AI / ML-based RLF prediction. With the introduction of AI / ML-based RLF prediction, how to report radio link failure predictions, including the content of the report and how to report RLF prediction changes when the prediction changes, remain to be resolved.

[0178] The embodiments of the present application refine the content of RLF prediction reporting, implement the change or release of RLF prediction reporting, and provide network configuration related to RLF prediction reporting, such as detailed indication of allowed reporting, reporting frequency, etc.

[0179] In an embodiment of the present application, the terminal sends a first message to the network side device, and the first message carries relevant information of the RLF prediction. In this way, the terminal can report the relevant information of the RLF prediction to the network side device before the RLF occurs, and can handle possible RLF in a timely manner, thereby improving the RLF processing effect.

[0180] Optionally, before the terminal sends the first message to the network-side device, the method further includes:

[0181] The terminal receives first configuration information sent by the network side device, where the first configuration information includes at least one of the following:

[0182] First indication information is used to instruct the terminal to report relevant information of RLF prediction according to cell groups;

[0183] Second indication information, used to instruct the terminal whether to report relevant information of a timer associated with RLF prediction;

[0184] The third indication information is used to indicate whether the terminal reports the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions;

[0185] fourth indication information, used to indicate a first threshold, where the first threshold is used to determine whether a timer associated with RLF prediction has timed out, or to determine whether to report relevant information of the timer associated with RLF prediction;

[0186] fifth indication information, used to indicate a second threshold, where the second threshold is used to determine whether the predicted retransmission of the RLC layer reaches a maximum number of retransmissions, or to determine whether to report a probability that the predicted retransmission of the RLC layer reaches the maximum number of retransmissions;

[0187] The sixth indication information is used to indicate the maximum duration of the RLF prediction.

[0188] The cell group includes a primary cell group (MCG) or a secondary cell group (SCG). The first configuration information instructs the terminal to report the relevant information of the RLF prediction by cell group. That is, the terminal will report the relevant information of the RLF prediction only when it is allowed to report the relevant information of the RLF prediction. The network-side device can instruct the terminal to report the relevant information of the RLF prediction by cell group according to its own capabilities or needs.

[0189] Among them, the first configuration information is used to indicate whether the terminal reports relevant information of the timer associated with the RLF prediction, so that the terminal will report relevant information of the timer associated with the RLF prediction only when the first configuration information indicates that the terminal reports relevant information of the timer associated with the RLF prediction; or, when the first configuration information indicates that the terminal does not report relevant information of the timer associated with the RLF prediction, the terminal does not report relevant information of the timer associated with the RLF prediction.

[0190] Among them, the first configuration information is used to indicate whether the terminal reports the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions, so that the terminal will report the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions when the first configuration information indicates that the terminal reports the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions; or, when the first configuration information indicates that the terminal does not report the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions, the terminal does not report the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions.

[0191] The first configuration information indicates a first threshold, so that the terminal can determine whether the timer associated with the RLF prediction will time out based on whether the predicted probability of the timer timing out associated with the RLF prediction reaches the first threshold. Taking the timer associated with the RLF prediction as T310 as an example, when the predicted probability of T310 timing out is greater than the first threshold indicated by the first configuration information, T310 is predicted to time out, and the terminal can report the predicted timeout of T310 to the network-side device.

[0192] The first configuration information indicates a second threshold, so that the terminal can determine whether the retransmission of the RLC layer will reach the maximum number of retransmissions based on whether the predicted probability of the retransmission of the RLC layer reaching the maximum number of retransmissions reaches the second threshold. When the predicted probability of the retransmission of the RLC layer reaching the maximum number of retransmissions is greater than or equal to the second threshold, the terminal predicts that the retransmission of the RLC layer will reach the maximum number of retransmissions, and the terminal can report the predicted number of retransmissions of the RLC layer reaching the maximum number of retransmissions to the network-side device; when the predicted probability of the retransmission of the RLC layer reaching the maximum number of retransmissions is less than the second threshold, the terminal predicts that the retransmission of the RLC layer will not reach the maximum number of retransmissions.

[0193] The maximum duration of the RLF prediction may be used to determine a time range for the terminal to perform RLF prediction, or a time range for the terminal to report the RLF prediction.

[0194] In one embodiment, the terminal may use the time of executing AI reasoning for RLF prediction (e.g., the current time point) as the starting point. The terminal may determine a time range based on the maximum duration of the RLF prediction as the time range for the terminal to perform RLF prediction. Taking the maximum duration of the RLF prediction as an example, the terminal predicts whether RLF will occur within the next 2 seconds. The terminal reports the RLF prediction results within the time range, which can avoid reporting prediction results outside the time range, thereby reducing the signaling load.

[0195] In addition, the first configuration information may be carried in an RRC reconfiguration message or a system message.

[0196] In this embodiment, the terminal receives the first configuration information sent by the network side device, so that the terminal can report the relevant information of RLF prediction to the network side device according to the first configuration information, so that the terminal can report the relevant information of RLF prediction according to the needs or capabilities of the network side device.

[0197] Optionally, the relevant information of the timer associated with RLF prediction includes at least one of the following:

[0198] Related information of timer T310;

[0199] Related information of timer T312;

[0200] Related information of a first timer, where the first timer is used for a predicted RLF.

[0201] The first timer being used for predicting RLF may also be described as: the first timer being used for predicting RLF. The first timer may be used for monitoring predicted radio link failure.

[0202] In one embodiment, the terminal may start a first timer when it predicts that an RLF will occur. When the first timer times out, the predicted RLF recovery process is executed; or, when the first timer times out, the corresponding predicted RLF re-establishment process is executed; or, when the first timer times out, a first message is sent to the network-side device to report relevant information about the RLF prediction. At this time, the first timer may have a certain advance amount compared to the predicted RLF occurrence time, which helps to assist the network in handling the RLF. For example, if the predicted RLF occurrence time is 10 seconds after the current time, the duration of the first timer can be set to 8 seconds, reserving 2 seconds for the network to handle the predicted RLF.

[0203] In one embodiment, the terminal may start a first timer when sending a first message 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.

[0204] Optionally, the relevant information of the timer T310 includes at least one of the following:

[0205] Indication information used to indicate the start status of timer T310;

[0206] Indication information used to indicate whether the prediction timer T310 has timed out;

[0207] Indication information used to indicate the probability of the predicted timer T310 timing out;

[0208] Indication information used to indicate the remaining duration of timer T310;

[0209] or

[0210] The relevant information of the timer T312 includes at least one of the following:

[0211] Indication information used to indicate the start status of timer T312;

[0212] Indication information used to indicate whether the prediction timer T312 has timed out;

[0213] Indication information used to indicate the probability of the predicted timer T312 timing out;

[0214] Indication information used to indicate the remaining duration of timer T312;

[0215] or,

[0216] The relevant information of the first timer includes at least one of the following:

[0217] Instruction information used to indicate whether to use the first timer;

[0218] Indication information used to indicate whether the first timer is started;

[0219] Indication information used to indicate the duration of the first timer.

[0220] The open state may include closed or opened.

[0221] In one embodiment, by the terminal reporting indication information for indicating the start status of timer T310 or indication information for indicating the start status of timer T312, the network side device can be assisted to know whether the terminal is about to have an RLF, so that the network side device can reconfigure the terminal in time, so that the terminal can perform cell switching in advance, thereby improving the system communication performance.

[0222] In one embodiment, the terminal reports indication information for indicating whether the prediction timer T310 has timed out or indication information for indicating whether the prediction timer T312 has timed out, which can assist the network side device in knowing whether the terminal is about to experience RLF, and facilitate the network side device to reconfigure the terminal in a timely manner, so that the terminal can perform cell switching in advance, thereby improving the system communication performance.

[0223] In one embodiment, by the terminal reporting indication information for indicating the probability of the predicted timer T310 timing out or indication information for indicating the probability of the predicted timer T312 timing out, the network side device can be assisted in knowing the possibility of RLF occurring in the terminal, so that the network side device can reconfigure the terminal in a timely manner, so that the terminal can perform cell switching in advance, thereby improving the system communication performance.

[0224] In one embodiment, by the terminal reporting indication information for indicating the remaining duration of timer T310 or indication information for indicating the remaining duration of timer T312, the network side device can be assisted in knowing the time urgency of the RLF occurrence of the terminal, so that the network side device can reconfigure the terminal in a timely manner, so that the terminal can perform cell switching in advance, thereby improving the system communication performance.

[0225] In one embodiment, by the terminal reporting indication information indicating whether to use the first timer, the network side device can know whether the terminal uses the first timer, which facilitates the network side device to obtain relevant information of the first timer to assist the network side device in reconfiguring the terminal.

[0226] In one embodiment, by the terminal reporting indication information indicating whether the first timer has been turned on, the network side device can know whether the terminal predicts that RLF will occur, which facilitates the network side device to reconfigure the terminal in time, so that the terminal can perform cell switching in advance, thereby improving the system communication performance.

[0227] In one embodiment, by the terminal reporting indication information for indicating the duration of the first timer, the network side device can learn the time urgency with which the terminal predicts that RLF will occur, so that the network side device can reconfigure the terminal in a timely manner, so that the terminal can perform cell switching in advance, thereby improving the system communication performance.

[0228] Optionally, the first configuration information is configured by the network side device for the terminal according to the cell group.

[0229] In this way, the terminal can perform RLF prediction reporting in the cell group.

[0230] Optionally, after the terminal sends the first message to the network-side device, the method further includes:

[0231] The terminal sends a second message to the network side device;

[0232] The second message carries at least one of the following:

[0233] Any changes to the previously reported RLF forecast information;

[0234] Instruction information used to instruct to release the relevant information of the previously reported RLF prediction.

[0235] The changes to the relevant information of the RLF prediction may include at least one of the following:

[0236] RLF prediction results after the change;

[0237] Changes to information related to timers associated with RLF prediction;

[0238] Changes to the predicted probability of random access failure;

[0239] Changes to the predicted probability of a radio link control (RLC) layer retransmission reaching a maximum number of retransmissions;

[0240] Changes to the predicted measurement results for predicting when RLF will occur.

[0241] In addition, the first message and the second message may both be messages corresponding to the RLF prediction report, so that the terminal can replace the old RLF prediction report with the new RLF prediction report.

[0242] In one embodiment, the change content of the relevant information of the RLF prediction may include an empty parameter, indicating the release of the relevant information of the RLF prediction reported before. Taking the change content of the RLF prediction result as an example, the terminal may indicate in the second message the release of the relevant information of the previously reported RLF prediction or indicate the release of the relevant information of the latest reported RLF prediction (excluding this time). The relevant information of the previously reported RLF prediction may be the relevant information of the RLF prediction reported in the first message. For example, the RLF prediction result may be reported as empty in the second message, and the network-side device may ignore the previously reported RLF prediction result according to the second message.

[0243] It should be noted that releasing the RLF prediction related information in the first message may be for RLF prediction mitigation.

[0244] In this implementation, the terminal sends a second message to the network-side device, so that the change of the RLF prediction reporting can be achieved through the second message.

[0245] Optionally, the method further includes:

[0246] The terminal receives second configuration information sent by the network side device, where the second configuration information includes at least one of the following:

[0247] The seventh indication information is used to indicate the duration of the prohibition timer;

[0248] Eighth indication information, used to indicate the reporting frequency of reporting relevant information of RLF prediction;

[0249] Ninth indication information, used to indicate the inference frequency of RLF prediction;

[0250] Wherein, during the running of the prohibition timer, the terminal is not allowed to report the relevant information of the RLF prediction.

[0251] The terminal may start the inhibit timer after reporting relevant information about the RLF prediction. For example, the terminal may start the inhibit timer after reporting relevant information about the RLF prediction for the first time. The first report in the connected state is the initial report. If the inhibit timer is not running, the terminal is allowed to report the second time and start the inhibit timer. If the inhibit timer is not running, the terminal is allowed to report relevant information about the RLF prediction, thereby reducing signaling load.

[0252] In addition, the reporting frequency may refer to the minimum time interval between two reports of RLF prediction related information, for example, a maximum of one report may be made within 1 second, so as to reduce signaling overhead and help save signaling load.

[0253] The RLF prediction inference frequency refers to the inference frequency of the AI ​​model used for RLF prediction. The inference frequency can be understood as the time interval between two inferences, meaning that the next inference is performed after a certain period of time. By indicating the RLF prediction inference frequency on the network side, the terminal can avoid excessive inference frequency, which helps save energy.

[0254] Optionally, after the terminal sends the first message to the network-side device, the method further includes:

[0255] The terminal receives the reconfiguration information sent by the network side device.

[0256] The reconfiguration information may be carried in a handover message or an RRC reconfiguration message. The reconfiguration information may include configuration information for the terminal to reselect a cell, for example, information about a candidate cell or a conditional handover candidate cell. The terminal may perform an RRC reconfiguration process, such as a handover or conditional handover, based on the reconfiguration information.

[0257] In one implementation, the terminal sends a first message to the network-side device, including:

[0258] The terminal performs RLF prediction and reports the RLF prediction. The terminal reports the relevant information of RLF prediction, including at least one of the following:

[0259] (1) RLF prediction result, indicating whether the RLF prediction is true or false. Furthermore, the UE reports the RLF prediction result only when the RLF prediction result is true.

[0260] (2) Information indicating the on-state of T310 or T312, used to indicate whether T310 or T312 is on. Considering RLF prediction, T310 or T312 may be off or on in two situations:

[0261] If T310 or T312 is not enabled, RLF prediction is a method of predicting out-of-sync in advance, or based on other RLF failure reasons such as the maximum number of RLC retransmissions, so that the network can handle it in advance.

[0262] If T310 or T312 is already enabled, reporting the T310 or T312 status allows the network to handle the situation based on the RLF prediction result. If the RLF prediction is true and T310 or T312 is enabled, the situation is handled as quickly as possible, improving processing efficiency and communication performance.

[0263] (3) Information indicating whether T310 or T312 is predicted to have timed out. The UE predicts whether T310 or T312 has timed out. Further, the UE reports this information only when T310 or T312 is predicted to have timed out.

[0264] (4) The probability of T310 or T312 timeout. In an implementation method, the probability is expressed as a percentage to assist the network in deciding how to configure the UE.

[0265] (5) Remaining duration of T310 or T312. If T310 or T312 is already enabled, reporting the remaining duration of Timer T310 or T312 can be combined with the probability of RLF prediction to assist the network in determining whether to reconfigure the UE to improve the UE's radio link.

[0266] (6) Information indicating whether the first timer is enabled or whether the first timer is used. The first timer is used to monitor predicted radio link failures. For example, if the prediction result is reported via a measurement report message (MeasurementReport), the UE indicates that the first timer is used (used) or that the first timer is enabled. This implicitly indicates that the measurement report contains an RLF prediction result.

[0267] (7) The duration of the first timer. The duration can be expressed in units such as seconds, system frame number (SFN), time slot or OFDM symbol.

[0268] If RLF is predicted to occur, the UE starts a first timer. The UE determines the duration of the first timer based on the predicted RLF time point. For example:

[0269] First timer duration=time from the current time to the predicted RLF time point−first offset.

[0270] The first offset represents a time advance relative to the time point at which the RLF is predicted to occur, and is used to handle possible RLF in advance. The first offset may be 0.

[0271] (8) Predicting the probability of random access failure. For example, the UE predicts the probability of random access failure on the serving cell of a carrier aggregation (CA) or MR-DC cell group. The UE predicts the probability of random access failure on the SCG and reports the RLF prediction content through the MCG; or the UE predicts the probability of random access failure on the MCG and reports the RLF prediction content through the SCG.

[0272] (9) Predict the probability that the RLC layer retransmission will reach the maximum number of retransmissions. In other words, predict the probability that RLC failure will be caused by the maximum number of RLF ARQ.

[0273] Optionally, the RLF prediction result is carried in a measurement report (MeasurementReport) or a UE Assistance Information (UAI) message.

[0274] Furthermore, the UE performs RLF prediction reporting in the cell group or to the target network node. The target network node includes a master node MN or a secondary node SN. The cell group includes a master cell group (MCG) or a secondary cell group (SCG). It can be understood that RLF prediction is performed separately for each cell group.

[0275] Optionally, before reporting the RLF prediction result, the terminal receives a first configuration (i.e., first configuration information) of the network, where the first configuration includes at least one of the following:

[0276] (1) Instruction information for instructing the UE to report the RLF prediction result by cell group; the cell group includes the primary cell group (MCG) and the secondary cell group (SCG). That is, the UE will report the RLF prediction result only when it is allowed to do so, consistent with the network's capabilities or requirements.

[0277] (2) Information indicating whether to report T310 or T312 related information. The T310 or T312 related information includes at least one of the following:

[0278] T310 or T312 open status information;

[0279] The remaining time of T310 or T312;

[0280] Prediction of T310 or T312 timeout, the prediction result includes true or false, or the predicted probability value;

[0281] The RLC layer retransmission reaches a prediction of the maximum number of retransmissions, the prediction result including true or false, or a predicted probability value;

[0282] A probability threshold for determining a T310 or T312 timeout. This probability threshold is used to determine whether to report a T310 or T312 timeout. For example, if the predicted result of a T310 or T312 timeout exceeds this probability threshold, the UE reports a T310 or T312 predicted timeout.

[0283] The probability threshold used to determine whether the retransmission of the RLC layer reaches the maximum number of retransmissions. For example, if the predicted result of the retransmission of the RLC layer reaching the maximum number of retransmissions exceeds the probability threshold, the UE reports the predicted maximum number of retransmissions of the RLC layer.

[0284] (3) Indication information indicating whether to report the first timer related information.

[0285] In addition, the first timer related information includes at least one of the following:

[0286] The first timer start status includes started, running or not running.

[0287] The first timer duration is the duration of the first timer configured by the network. Further, if the terminal is configured with the first timer duration, the terminal is allowed to send the RLF prediction result.

[0288] (4) Maximum duration of RLF prediction: This is the time range for the UE to report the RLF prediction. The UE reports the RLF prediction results within this time range, which can avoid reporting the prediction results outside the time range, thereby reducing the signaling load.

[0289] In one implementation, the maximum duration of the RLF prediction may be used to set the duration of the first timer. For example, the duration of the first timer may be the maximum duration of the RLF prediction.

[0290] Furthermore, the first configuration may be configured according to a Cell group, wherein the Cell group includes a primary cell group MCG or a secondary cell group SCG.

[0291] The first configuration may be an RRC reconfiguration message or a system message.

[0292] Related technologies have the following issues: RLF prediction requires a certain amount of lead time for the base station to prepare, such as measurements and handover preparation. For example, the UE can report to the base station at point P in Figure 6 (the time point when RLF is predicted), but this may increase the probability of inaccurate RLF prediction. For example, if the UE's movement path deviates from the usual movement path, the prediction is based on the usual movement path, resulting in inaccurate prediction. In the event of an inaccurate prediction, the base station's handover operations (for example, switching the UE from cell 1 to cell 2) are invalid, and may even degrade the UE's communication performance.

[0293] In this embodiment, the UE predicts through the AI ​​model that RLF will occur at a future time point t1. After reporting the RLF prediction report to the base station, the UE may change or release the prediction report.

[0294] In one embodiment, as shown in FIG7 , the terminal sends a first message to the network side device, including:

[0295] After performing RLF prediction, the terminal reports a first RLF prediction report.

[0296] After the terminal continues to perform RLF prediction, it reports a second RLF prediction report.

[0297] The prediction result in the second RLF prediction report is used to indicate at least one of the following:

[0298] (1) Changes to the prediction results in the first RLF prediction report. The changes include part or all of the predicted time point of RLF occurrence or the probability of RLF occurrence. Taking the predicted time point of RLF occurrence as an example, the UE predicts that RLF will occur at a future time point t1. After reporting the RLF prediction report to the base station, the UE predicts that RLF will still occur, but it is no longer time point t1, but time point t2. t2 can be advanced or delayed relative to t1. Since the UE predicts that RLF will still occur, the UE can send a new RLF prediction report to indicate the new time point, and the base station can always take the new RLF prediction report as the standard.

[0299] (2) Instruct to release the first RLF prediction report.

[0300] (3) Indicating RLF prediction relief. If the UE predicts that RLF will not occur again in the future, the UE needs to report RLF prediction relief. This can be a new message, or the UE can use the time from the time point of RLF occurrence (if the time after RLF occurrence is reported) to be infinite to indicate the release of RLF prediction.

[0301] Furthermore, the new RLF prediction report replaces the old RLF prediction report. That is:

[0302] The terminal contains an empty parameter to indicate that the parameter information reported before is released; or

[0303] After receiving the RLF prediction report, the base station releases or ignores the previously received RLF prediction report, that is, the new RLF prediction report is always taken as the basis, that is, the old prediction report is always overwritten.

[0304] Optionally, before reporting the RLF prediction report, the UE receives configuration information sent by the network, where the configuration information indicates at least one of the following:

[0305] Prohibit timer duration. After the UE reports the RLF prediction report for the first time, the prohibit timer is started. When the prohibit timer is not running or when the UE reports the RLF prediction report for the first time, the UE is allowed to report the RLF prediction report, thereby saving signaling load.

[0306] Reporting frequency is used to indicate the minimum time interval between two reports. For example, a report can only be made once within 1 second to reduce signaling overhead and save signaling load.

[0307] Inference frequency is used to limit the inference frequency of the AI ​​model, which helps UE save energy.

[0308] The prohibition timer duration, reporting frequency or inference frequency may also be agreed upon by the protocol.

[0309] The embodiments of the present application can be used in LTE, NR or 6G, etc.

[0310] Compared with the related art, the embodiment of the present application provides more accurate reporting results based on the RLF prediction scenario, including whether the RLF timer T310 / T312 is running, RLC failure, change or release of the reporting result, etc., and provides corresponding reporting methods and configurations, which are conducive to accurate reporting and accurate processing of RLF prediction, and can improve communication performance.

[0311] The RLF prediction and reporting method provided in the embodiment of the present application can be executed by an RLF prediction and reporting device. In the embodiment of the present application, the RLF prediction and reporting method performed by the RLF prediction and reporting device is taken as an example to illustrate the RLF prediction and reporting device provided in the embodiment of the present application.

[0312] The embodiment of the present application further provides a method for predicting and reporting a radio link failure (RLF), including:

[0313] The terminal sends a second message to the network side device;

[0314] The second message carries at least one of the following:

[0315] Any changes to the previously reported RLF forecast information;

[0316] Instruction information used to instruct to release the relevant information of the previously reported RLF prediction.

[0317] Optionally, before the terminal sends the second message to the network-side device, the method further includes:

[0318] The terminal sends a first message to a network-side device, where the first message carries relevant information about RLF prediction.

[0319] Optionally, the relevant information for RLF prediction includes at least one of the following:

[0320] RLF prediction results;

[0321] Information about timers associated with RLF prediction;

[0322] Predicted probability of random access failure;

[0323] The predicted probability that the retransmission of the radio link control (RLC) layer reaches the maximum number of retransmissions;

[0324] Prediction measurement results for predicting when RLF will occur.

[0325] Optionally, before the terminal sends the first message to the network-side device, the method further includes:

[0326] The terminal receives first configuration information sent by the network side device, where the first configuration information includes at least one of the following:

[0327] First indication information is used to instruct the terminal to report relevant information of RLF prediction according to cell groups;

[0328] Second indication information, used to instruct the terminal whether to report relevant information of a timer associated with RLF prediction;

[0329] The third indication information is used to indicate whether the terminal reports the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions;

[0330] fourth indication information, used to indicate a first threshold, where the first threshold is used to determine whether a timer associated with RLF prediction has timed out, or to determine whether to report relevant information of the timer associated with RLF prediction;

[0331] fifth indication information, used to indicate a second threshold, where the second threshold is used to determine whether the predicted retransmission of the RLC layer reaches a maximum number of retransmissions, or to determine whether to report a probability that the predicted retransmission of the RLC layer reaches the maximum number of retransmissions;

[0332] The sixth indication information is used to indicate the maximum duration of the RLF prediction.

[0333] Optionally, the relevant information of the timer associated with RLF prediction includes at least one of the following:

[0334] Related information of timer T310;

[0335] Related information of timer T312;

[0336] Related information of a first timer, where the first timer is used for a predicted RLF.

[0337] Optionally, the relevant information of the timer T310 includes at least one of the following:

[0338] Indication information used to indicate the start status of timer T310;

[0339] Indication information used to indicate whether the prediction timer T310 has timed out;

[0340] Indication information used to indicate the probability of the predicted timer T310 timing out;

[0341] Indication information used to indicate the remaining duration of timer T310;

[0342] or

[0343] The relevant information of the timer T312 includes at least one of the following:

[0344] Indication information used to indicate the start status of timer T312;

[0345] Indication information used to indicate whether the prediction timer T312 has timed out;

[0346] Indication information used to indicate the probability of the predicted timer T312 timing out;

[0347] Indication information used to indicate the remaining duration of timer T312;

[0348] or,

[0349] The relevant information of the first timer includes at least one of the following:

[0350] Instruction information used to indicate whether to use the first timer;

[0351] Indication information used to indicate whether the first timer is started;

[0352] Indication information used to indicate the duration of the first timer.

[0353] Optionally, the first configuration information is configured by the network side device for the terminal according to the cell group.

[0354] Optionally, the network side device is a master node MN, or a slave node SN.

[0355] Optionally, the method further includes:

[0356] The terminal receives second configuration information sent by the network side device, where the second configuration information includes at least one of the following:

[0357] The seventh indication information is used to indicate the duration of the prohibition timer;

[0358] Eighth indication information, used to indicate the reporting frequency of reporting relevant information of RLF prediction;

[0359] Ninth indication information, used to indicate the inference frequency of RLF prediction;

[0360] Wherein, during the running of the prohibition timer, the terminal is not allowed to report the relevant information of the RLF prediction.

[0361] Optionally, after the terminal sends the first message to the network-side device, the method further includes:

[0362] The terminal receives the reconfiguration information sent by the network side device.

[0363] It should be noted that the specific implementation of this embodiment can refer to the relevant description of the embodiment shown in Figure 5. To avoid repeated description, this embodiment will not be described again.

[0364] 8 , which is a flowchart of a method for predicting and reporting a radio link failure (RLF) according to an embodiment of the present application. As shown in FIG8 , the method for predicting and reporting a radio link failure (RLF) includes the following steps:

[0365] Step 201: A network-side device receives a first message sent by a terminal, where the first message carries relevant information about RLF prediction.

[0366] Optionally, the relevant information for RLF prediction includes at least one of the following:

[0367] RLF prediction results;

[0368] Information about timers associated with RLF prediction;

[0369] Predicted probability of random access failure;

[0370] Predict the probability that the retransmission of the radio link control RLC layer reaches the maximum number of retransmissions;

[0371] Prediction measurement results for predicting when RLF will occur.

[0372] Optionally, before the network-side device receives the first message sent by the terminal, the method further includes:

[0373] The network-side device sends first configuration information to the terminal, where the first configuration information includes at least one of the following:

[0374] First indication information is used to instruct the terminal to report relevant information of RLF prediction according to cell groups;

[0375] Second indication information, used to instruct the terminal whether to report relevant information of a timer associated with RLF prediction;

[0376] The third indication information is used to indicate whether the terminal reports the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions;

[0377] fourth indication information, used to indicate a first threshold, where the first threshold is used to determine whether a timer associated with RLF prediction has timed out, or to determine whether to report relevant information of the timer associated with RLF prediction;

[0378] fifth indication information, used to indicate a second threshold, where the second threshold is used to determine whether the predicted retransmission of the RLC layer reaches a maximum number of retransmissions, or to determine whether to report a probability that the predicted retransmission of the RLC layer reaches the maximum number of retransmissions;

[0379] The sixth indication information is used to indicate the maximum duration of the RLF prediction.

[0380] Optionally, the relevant information of the timer associated with RLF prediction includes at least one of the following:

[0381] Related information of timer T310;

[0382] Related information of timer T312;

[0383] Related information of a first timer, where the first timer is used for a predicted RLF.

[0384] Optionally, the relevant information of the timer T310 includes at least one of the following:

[0385] Indication information used to indicate the start status of timer T310;

[0386] Indication information used to indicate whether the prediction timer T310 has timed out;

[0387] Indication information used to indicate the probability of the predicted timer T310 timing out;

[0388] Indication information used to indicate the remaining duration of timer T310;

[0389] or

[0390] The relevant information of the timer T312 includes at least one of the following:

[0391] Indication information used to indicate the start status of timer T312;

[0392] Indication information used to indicate whether the prediction timer T312 has timed out;

[0393] Indication information used to indicate the probability of the predicted timer T312 timing out;

[0394] Indication information used to indicate the remaining duration of timer T312;

[0395] or,

[0396] The relevant information of the first timer includes at least one of the following:

[0397] Instruction information used to indicate whether to use the first timer;

[0398] Indication information used to indicate whether the first timer is started;

[0399] Indication information used to indicate the duration of the first timer.

[0400] Optionally, the first configuration information is configured by the network side device for the terminal according to the cell group.

[0401] Optionally, the network side device is a master node MN, or a slave node SN.

[0402] Optionally, after the network-side device receives the first message sent by the terminal, the method further includes:

[0403] The network-side device receives a second message sent by the terminal, where the second message carries at least one of the following: a change in the relevant information of the RLF prediction reported previously; and indication information for instructing to release the relevant information of the RLF prediction reported previously.

[0404] The network-side device ignores the relevant information of the RLF prediction reported last time.

[0405] Optionally, the method further includes:

[0406] The network-side device sends second configuration information to the terminal, where the second configuration information includes at least one of the following:

[0407] The seventh indication information is used to indicate the duration of the prohibition timer;

[0408] Eighth indication information, used to indicate the reporting frequency of reporting relevant information of RLF prediction;

[0409] Ninth indication information, used to indicate the inference frequency of RLF prediction;

[0410] Wherein, during the running of the prohibition timer, the terminal is not allowed to report the relevant information of the RLF prediction.

[0411] Optionally, after the network-side device receives the first message sent by the terminal, the method further includes:

[0412] The network side device sends reconfiguration information to the terminal.

[0413] It should be noted that this embodiment is an implementation of the network side device corresponding to the embodiment shown in Figure 5. Its specific implementation can refer to the relevant description of the embodiment shown in Figure 5. To avoid repetition, this embodiment will not be repeated.

[0414] Please refer to FIG. 9 , which is a structural diagram of an RLF prediction and reporting apparatus provided in an embodiment of the present application. A terminal includes the RLF prediction and reporting apparatus. As shown in FIG. 9 , the RLF prediction and reporting apparatus 300 includes:

[0415] The first sending module 301 is configured to send a first message to a network-side device, where the first message carries information related to RLF prediction.

[0416] Optionally, the relevant information for RLF prediction includes at least one of the following:

[0417] RLF prediction results;

[0418] Information about timers associated with RLF prediction;

[0419] Predicted probability of random access failure;

[0420] The predicted probability that the retransmission of the radio link control (RLC) layer reaches the maximum number of retransmissions;

[0421] Prediction measurement results for predicting when RLF will occur.

[0422] Optionally, the device further comprises:

[0423] The first receiving module is configured to receive first configuration information sent by a network-side device, where the first configuration information includes at least one of the following:

[0424] First indication information is used to instruct the terminal to report relevant information of RLF prediction according to cell groups;

[0425] Second indication information, used to instruct the terminal whether to report relevant information of a timer associated with RLF prediction;

[0426] The third indication information is used to indicate whether the terminal reports the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions;

[0427] fourth indication information, used to indicate a first threshold, where the first threshold is used to determine whether a timer associated with RLF prediction has timed out, or to determine whether to report relevant information of the timer associated with RLF prediction;

[0428] fifth indication information, used to indicate a second threshold, where the second threshold is used to determine whether the predicted retransmission of the RLC layer reaches a maximum number of retransmissions, or to determine whether to report a probability that the predicted retransmission of the RLC layer reaches the maximum number of retransmissions;

[0429] The sixth indication information is used to indicate the maximum duration of the RLF prediction.

[0430] Optionally, the relevant information of the timer associated with RLF prediction includes at least one of the following:

[0431] Related information of timer T310;

[0432] Related information of timer T312;

[0433] Related information of a first timer, where the first timer is used for a predicted RLF.

[0434] Optionally, the relevant information of the timer T310 includes at least one of the following:

[0435] Indication information used to indicate the start status of timer T310;

[0436] Indication information used to indicate whether the prediction timer T310 has timed out;

[0437] Indication information used to indicate the probability of the predicted timer T310 timing out;

[0438] Indication information used to indicate the remaining duration of timer T310;

[0439] or

[0440] The relevant information of the timer T312 includes at least one of the following:

[0441] Indication information used to indicate the start status of timer T312;

[0442] Indication information used to indicate whether the prediction timer T312 has timed out;

[0443] Indication information used to indicate the probability of the predicted timer T312 timing out;

[0444] Indication information used to indicate the remaining duration of timer T312;

[0445] or,

[0446] The relevant information of the first timer includes at least one of the following:

[0447] Instruction information used to indicate whether to use the first timer;

[0448] Indication information used to indicate whether the first timer is started;

[0449] Indication information used to indicate the duration of the first timer.

[0450] Optionally, the first configuration information is configured by the network side device for the terminal according to the cell group.

[0451] Optionally, the network side device is a master node MN, or a slave node SN.

[0452] Optionally, after the terminal sends the first message to the network-side device, the apparatus further includes:

[0453] A second sending module, configured to send a second message to the network side device;

[0454] The second message carries at least one of the following:

[0455] Any changes to the previously reported RLF forecast information;

[0456] Instruction information used to instruct to release the relevant information of the previously reported RLF prediction.

[0457] Optionally, the device further comprises:

[0458] The second receiving module is configured to receive second configuration information sent by the network-side device, where the second configuration information includes at least one of the following:

[0459] The seventh indication information is used to indicate the duration of the prohibition timer;

[0460] Eighth indication information, used to indicate the reporting frequency of reporting relevant information of RLF prediction;

[0461] Ninth indication information, used to indicate the inference frequency of RLF prediction;

[0462] Wherein, during the running of the prohibition timer, the terminal is not allowed to report the relevant information of the RLF prediction.

[0463] Optionally, the device further comprises:

[0464] The third receiving module is used to receive the reconfiguration information sent by the network side device.

[0465] The RLF prediction and reporting apparatus in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component within 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), and the like, and are not specifically limited in the embodiments of the present application.

[0466] The RLF prediction and reporting device provided in the embodiment of the present application can implement each process implemented in the method embodiment of Figure 5 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0467] Please refer to FIG. 10 , which is a structural diagram of an RLF prediction and reporting apparatus provided in an embodiment of the present application. A network-side device includes the RLF prediction and reporting apparatus. As shown in FIG. 10 , the RLF prediction and reporting apparatus 400 includes:

[0468] The first receiving module 401 is configured to receive a first message sent by a terminal, where the first message carries information related to RLF prediction.

[0469] Optionally, the relevant information for RLF prediction includes at least one of the following:

[0470] RLF prediction results;

[0471] Information about timers associated with RLF prediction;

[0472] Predicted probability of random access failure;

[0473] The predicted probability that the retransmission of the radio link control (RLC) layer reaches the maximum number of retransmissions;

[0474] Prediction measurement results for predicting when RLF will occur.

[0475] Optionally, before the network-side device receives the first message sent by the terminal, the apparatus further includes:

[0476] A first sending module is configured to send first configuration information to the terminal, where the first configuration information includes at least one of the following:

[0477] First indication information is used to instruct the terminal to report relevant information of RLF prediction according to cell groups;

[0478] Second indication information, used to instruct the terminal whether to report relevant information of a timer associated with RLF prediction;

[0479] The third indication information is used to indicate whether the terminal reports the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions;

[0480] fourth indication information, used to indicate a first threshold, where the first threshold is used to determine whether a timer associated with RLF prediction has timed out, or to determine whether to report relevant information of the timer associated with RLF prediction;

[0481] fifth indication information, used to indicate a second threshold, where the second threshold is used to determine whether the predicted retransmission of the RLC layer reaches a maximum number of retransmissions, or to determine whether to report a probability that the predicted retransmission of the RLC layer reaches the maximum number of retransmissions;

[0482] The sixth indication information is used to indicate the maximum duration of the RLF prediction.

[0483] Optionally, the relevant information of the timer associated with RLF prediction includes at least one of the following:

[0484] Related information of timer T310;

[0485] Related information of timer T312;

[0486] Related information of a first timer, where the first timer is used for a predicted RLF.

[0487] Optionally, the relevant information of the timer T310 includes at least one of the following:

[0488] Indication information used to indicate the start status of timer T310;

[0489] Indication information used to indicate whether the prediction timer T310 has timed out;

[0490] Indication information used to indicate the probability of the predicted timer T310 timing out;

[0491] Indication information used to indicate the remaining duration of timer T310;

[0492] or

[0493] The relevant information of the timer T312 includes at least one of the following:

[0494] Indication information used to indicate the start status of timer T312;

[0495] Indication information used to indicate whether the prediction timer T312 has timed out;

[0496] Indication information used to indicate the probability of the predicted timer T312 timing out;

[0497] Indication information used to indicate the remaining duration of timer T312;

[0498] or,

[0499] The relevant information of the first timer includes at least one of the following:

[0500] Instruction information used to indicate whether to use the first timer;

[0501] Indication information used to indicate whether the first timer is started;

[0502] Indication information used to indicate the duration of the first timer.

[0503] Optionally, the first configuration information is configured by the network side device for the terminal according to the cell group.

[0504] Optionally, the network side device is a master node MN, or a slave node SN.

[0505] Optionally, after the network-side device receives the first message sent by the terminal, the apparatus further includes:

[0506] A second receiving module is configured to receive a second message sent by the terminal, where the second message carries at least one of the following: a change in the relevant information of the previously reported RLF prediction; and instruction information for instructing to release the relevant information of the previously reported RLF prediction;

[0507] The processing module is configured to ignore the relevant information of the RLF prediction reported last time.

[0508] Optionally, the device further comprises:

[0509] The second sending module is configured to send second configuration information to the terminal, where the second configuration information includes at least one of the following:

[0510] The seventh indication information is used to indicate the duration of the prohibition timer;

[0511] Eighth indication information, used to indicate the reporting frequency of reporting relevant information of RLF prediction;

[0512] Ninth indication information, used to indicate the inference frequency of RLF prediction;

[0513] Wherein, during the running of the prohibition timer, the terminal is not allowed to report the relevant information of the RLF prediction.

[0514] Optionally, the device further comprises:

[0515] The third sending module is configured to send reconfiguration information to the terminal.

[0516] The RLF prediction and reporting apparatus in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component within 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), and the like, and are not specifically limited in the embodiments of the present application.

[0517] The RLF prediction and reporting device provided in the embodiment of the present application can implement the various processes implemented in the method embodiment of Figure 8 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0518] Optionally, as shown in Figure 11, 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 above-mentioned RLF prediction and reporting method embodiment 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 above-mentioned RLF prediction and reporting method embodiment applied to the network side device, and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0519] 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 FIG5 . This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment are applicable to this terminal embodiment and can achieve the same technical effects.

[0520] Specifically, FIG12 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0521] 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.

[0522] 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 FIG12 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.

[0523] 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.

[0524] 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.

[0525] 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.

[0526] 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.

[0527] The radio frequency unit 601 is used for:

[0528] A first message is sent to a network-side device, where the first message carries relevant information about RLF prediction.

[0529] Optionally, the relevant information for RLF prediction includes at least one of the following:

[0530] RLF prediction results;

[0531] Information about timers associated with RLF prediction;

[0532] Predicted probability of random access failure;

[0533] The predicted probability that the retransmission of the radio link control (RLC) layer reaches the maximum number of retransmissions;

[0534] Prediction measurement results for predicting when RLF will occur.

[0535] Optionally, the radio frequency unit 601 is further configured to:

[0536] Receive first configuration information sent by a network-side device, where the first configuration information includes at least one of the following:

[0537] First indication information is used to instruct the terminal to report relevant information of RLF prediction according to cell groups;

[0538] Second indication information, used to instruct the terminal whether to report relevant information of a timer associated with RLF prediction;

[0539] The third indication information is used to indicate whether the terminal reports the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions;

[0540] fourth indication information, used to indicate a first threshold, where the first threshold is used to determine whether a timer associated with RLF prediction has timed out, or to determine whether to report relevant information of the timer associated with RLF prediction;

[0541] fifth indication information, used to indicate a second threshold, where the second threshold is used to determine whether the predicted retransmission of the RLC layer reaches a maximum number of retransmissions, or to determine whether to report a probability that the predicted retransmission of the RLC layer reaches the maximum number of retransmissions;

[0542] The sixth indication information is used to indicate the maximum duration of the RLF prediction.

[0543] Optionally, the relevant information of the timer associated with RLF prediction includes at least one of the following:

[0544] Related information of timer T310;

[0545] Related information of timer T312;

[0546] Related information of a first timer, where the first timer is used for a predicted RLF.

[0547] Optionally, the relevant information of the timer T310 includes at least one of the following:

[0548] Indication information used to indicate the start status of timer T310;

[0549] Indication information used to indicate whether the prediction timer T310 has timed out;

[0550] Indication information used to indicate the probability of the predicted timer T310 timing out;

[0551] Indication information used to indicate the remaining duration of timer T310;

[0552] or

[0553] The relevant information of the timer T312 includes at least one of the following:

[0554] Indication information used to indicate the start status of timer T312;

[0555] Indication information used to indicate whether the prediction timer T312 has timed out;

[0556] Indication information used to indicate the probability of the predicted timer T312 timing out;

[0557] Indication information used to indicate the remaining duration of timer T312;

[0558] or,

[0559] The relevant information of the first timer includes at least one of the following:

[0560] Instruction information used to indicate whether to use the first timer;

[0561] Indication information used to indicate whether the first timer is started;

[0562] Indication information used to indicate the duration of the first timer.

[0563] Optionally, the first configuration information is configured by the network side device for the terminal according to the cell group.

[0564] Optionally, the network side device is a master node MN, or a slave node SN.

[0565] Optionally, the radio frequency unit 601 is further configured to:

[0566] Sending a second message to the network side device;

[0567] The second message carries at least one of the following:

[0568] Any changes to the previously reported RLF forecast information;

[0569] Instruction information used to instruct to release the relevant information of the previously reported RLF prediction.

[0570] Optionally, the radio frequency unit 601 is further configured to:

[0571] Receive second configuration information sent by the network side device, where the second configuration information includes at least one of the following:

[0572] The seventh indication information is used to indicate the duration of the prohibition timer;

[0573] Eighth indication information, used to indicate the reporting frequency of reporting relevant information of RLF prediction;

[0574] Ninth indication information, used to indicate the inference frequency of RLF prediction;

[0575] Wherein, during the running of the prohibition timer, the terminal is not allowed to report the relevant information of the RLF prediction.

[0576] Optionally, the radio frequency unit 601 is further configured to:

[0577] Receive reconfiguration information sent by the network side device.

[0578] 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 5, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0579] Specifically, the terminal of the embodiment of the present application also includes: instructions or programs stored in the memory 609 and executable on the processor 610. The processor 610 calls the instructions or programs in the memory 609 to execute the methods of the modules shown in FIG9 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0580] 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 FIG8 . 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.

[0581] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 13, 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.

[0582] 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.

[0583] The baseband device 703 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 13, 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.

[0584] The network side device may further include a network interface 706 , which is, for example, a Common Public Radio Interface (CPRI).

[0585] Specifically, the network side device 700 of the embodiment of the present application also includes: instructions or programs stored in the memory 705 and executable on the processor 704. The processor 704 calls the instructions or programs in the memory 705 to execute the methods executed by the modules shown in FIG10 and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0586] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned RLF prediction and reporting method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0587] 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.

[0588] An embodiment of the present application further provides a chip, 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 various processes of the above-mentioned RLF prediction and reporting method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0589] 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.

[0590] 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 and reporting method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0591] An embodiment of the present application also provides an RLF prediction and reporting system, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the RLF prediction and reporting method applied to the terminal as described above, and the network-side device can be used to execute the steps of the RLF prediction and reporting method applied to the network-side device as described above.

[0592] 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.

[0593] 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.

[0594] 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 predicting and reporting a radio link failure (RLF), comprising: The terminal sends a first message to the network side device, where the first message carries relevant information about RLF prediction; The relevant information of the RLF prediction includes at least one of the following: RLF prediction results; Information about timers associated with RLF prediction; Predicted probability of random access failure; The predicted probability that the retransmission of the radio link control (RLC) layer reaches the maximum number of retransmissions; Prediction measurement results for predicting when RLF will occur.

2. The method according to claim 1, wherein Before the terminal sends the first message to the network side device, the method further includes: The terminal receives first configuration information sent by the network side device, where the first configuration information includes at least one of the following: First indication information is used to instruct the terminal to report relevant information of RLF prediction according to cell groups; Second indication information, used to instruct the terminal whether to report relevant information of a timer associated with RLF prediction; The third indication information is used to indicate whether the terminal reports the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions; fourth indication information, used to indicate a first threshold, where the first threshold is used to determine whether a timer associated with RLF prediction has timed out, or to determine whether to report relevant information of the timer associated with RLF prediction; fifth indication information, used to indicate a second threshold, where the second threshold is used to determine whether the predicted retransmission of the RLC layer reaches a maximum number of retransmissions, or to determine whether to report a probability that the predicted retransmission of the RLC layer reaches the maximum number of retransmissions; The sixth indication information is used to indicate the maximum duration of the RLF prediction.

3. The method according to claim 1 or 2, wherein: The relevant information of the timer associated with the RLF prediction includes at least one of the following: Related information of timer T310; Related information of timer T312; Related information of a first timer, where the first timer is used for a predicted RLF.

4. The method according to claim 3, wherein: The relevant information of the timer T310 includes at least one of the following: Indication information used to indicate the start status of timer T310; Indication information used to indicate whether the prediction timer T310 has timed out; Indication information used to indicate the probability of the predicted timer T310 timing out; Indication information used to indicate the remaining duration of timer T310; or The relevant information of the timer T312 includes at least one of the following: Indication information used to indicate the start status of timer T312; Indication information used to indicate whether the prediction timer T312 has timed out; Indication information used to indicate the probability of the predicted timer T312 timing out; Indication information used to indicate the remaining duration of timer T312; or, The relevant information of the first timer includes at least one of the following: Instruction information used to indicate whether to use the first timer; Indication information used to indicate whether the first timer is started; Indication information used to indicate the duration of the first timer.

5. The method according to claim 2, wherein: The first configuration information is configured by the network side device for the terminal according to the cell group.

6. The method according to any one of claims 1 to 5, wherein The network side device is a master node MN or a slave node SN.

7. The method according to any one of claims 1 to 6, wherein After the terminal sends the first message to the network side device, the method further includes: The terminal sends a second message to the network side device; The second message carries at least one of the following: Any changes to the previously reported RLF forecast information; Instruction information used to instruct to release the relevant information of the previously reported RLF prediction.

8. The method according to any one of claims 1 to 7, further comprising: The terminal receives second configuration information sent by the network side device, where the second configuration information includes at least one of the following: The seventh indication information is used to indicate the duration of the prohibition timer; Eighth indication information, used to indicate the reporting frequency of reporting relevant information of RLF prediction; Ninth indication information, used to indicate the inference frequency of RLF prediction; Wherein, during the running of the prohibition timer, the terminal is not allowed to report the relevant information of the RLF prediction.

9. The method according to any one of claims 1 to 8, wherein After the terminal sends the first message to the network side device, the method further includes: The terminal receives the reconfiguration information sent by the network side device.

10. A method for predicting and reporting a radio link failure (RLF), comprising: The network side device receives a first message sent by the terminal, where the first message carries relevant information about RLF prediction; The relevant information of the RLF prediction includes at least one of the following: RLF prediction results; Information about timers associated with RLF prediction; Predicted probability of random access failure; The predicted probability that the retransmission of the radio link control (RLC) layer reaches the maximum number of retransmissions; Prediction measurement results for predicting when RLF will occur.

11. The method according to claim 10, wherein: Before the network side device receives the first message sent by the terminal, the method further includes: The network-side device sends first configuration information to the terminal, where the first configuration information includes at least one of the following: First indication information is used to instruct the terminal to report relevant information of RLF prediction according to cell groups; Second indication information, used to instruct the terminal whether to report relevant information of a timer associated with RLF prediction; The third indication information is used to indicate whether the terminal reports the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions; fourth indication information, used to indicate a first threshold, where the first threshold is used to determine whether a timer associated with RLF prediction has timed out, or to determine whether to report relevant information of the timer associated with RLF prediction; fifth indication information, used to indicate a second threshold, where the second threshold is used to determine whether the predicted retransmission of the RLC layer reaches a maximum number of retransmissions, or to determine whether to report a probability that the predicted retransmission of the RLC layer reaches the maximum number of retransmissions; The sixth indication information is used to indicate the maximum duration of the RLF prediction.

12. The method according to claim 10 or 11, wherein: The relevant information of the timer associated with the RLF prediction includes at least one of the following: Related information of timer T310; Related information of timer T312; Related information of a first timer, where the first timer is used for a predicted RLF.

13. The method according to claim 12, wherein: The relevant information of the timer T310 includes at least one of the following: Indication information used to indicate the start status of timer T310; Indication information used to indicate whether the prediction timer T310 has timed out; Indication information used to indicate the probability of the predicted timer T310 timing out; Indication information used to indicate the remaining duration of timer T310; or The relevant information of the timer T312 includes at least one of the following: Indication information used to indicate the start status of timer T312; Indication information used to indicate whether the prediction timer T312 has timed out; Indication information used to indicate the probability of the predicted timer T312 timing out; Indication information used to indicate the remaining duration of timer T312; or, The relevant information of the first timer includes at least one of the following: Instruction information used to indicate whether to use the first timer; Indication information used to indicate whether the first timer is started; Indication information used to indicate the duration of the first timer.

14. The method according to claim 11, wherein The first configuration information is configured by the network side device for the terminal according to the cell group.

15. The method according to any one of claims 10 to 14, wherein The network side device is a master node MN or a slave node SN.

16. The method according to any one of claims 10 to 15, wherein After the network-side device receives the first message sent by the terminal, the method further includes: The network-side device receives a second message sent by the terminal, where the second message carries at least one of the following: a change in the relevant information of the RLF prediction reported previously; and indication information for instructing to release the relevant information of the RLF prediction reported previously. The network-side device ignores the relevant information of the RLF prediction reported last time.

17. The method according to any one of claims 10 to 16, further comprising: The network-side device sends second configuration information to the terminal, where the second configuration information includes at least one of the following: The seventh indication information is used to indicate the duration of the prohibition timer; Eighth indication information, used to indicate the reporting frequency of reporting relevant information of RLF prediction; Ninth indication information, used to indicate the inference frequency of RLF prediction; Wherein, during the running of the prohibition timer, the terminal is not allowed to report the relevant information of the RLF prediction.

18. The method according to any one of claims 10 to 17, wherein After the network-side device receives the first message sent by the terminal, the method further includes: The network side device sends reconfiguration information to the terminal.

19. A RLF prediction and reporting device, comprising: A first sending module, configured to send a first message to a network-side device, where the first message carries relevant information about RLF prediction; The relevant information of the RLF prediction includes at least one of the following: RLF prediction results; Information about timers associated with RLF prediction; Predicted probability of random access failure; The predicted probability that the retransmission of the radio link control (RLC) layer reaches the maximum number of retransmissions; Prediction measurement results for predicting when RLF will occur.

20. The apparatus according to claim 19, further comprising: The first receiving module is configured to receive first configuration information sent by a network-side device, where the first configuration information includes at least one of the following: First indication information is used to instruct the terminal to report relevant information of RLF prediction according to cell groups; Second indication information, used to instruct the terminal whether to report relevant information of a timer associated with RLF prediction; The third indication information is used to indicate whether the terminal reports the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions; fourth indication information, used to indicate a first threshold, where the first threshold is used to determine whether a timer associated with RLF prediction has timed out, or to determine whether to report relevant information of the timer associated with RLF prediction; fifth indication information, used to indicate a second threshold, where the second threshold is used to determine whether the predicted retransmission of the RLC layer reaches a maximum number of retransmissions, or to determine whether to report a probability that the predicted retransmission of the RLC layer reaches the maximum number of retransmissions; The sixth indication information is used to indicate the maximum duration of the RLF prediction.

21. The device according to claim 19 or 20, wherein The relevant information of the timer associated with the RLF prediction includes at least one of the following: Related information of timer T310; Related information of timer T312; Related information of a first timer, where the first timer is used for a predicted RLF.

22. The apparatus according to any one of claims 19 to 21, further comprising: A second sending module, configured to send a second message to the network side device; The second message carries at least one of the following: Any changes to the previously reported RLF forecast information; Instruction information used to instruct to release the relevant information of the previously reported RLF prediction.

23. The apparatus according to any one of claims 19 to 22, further comprising: The second receiving module is configured to receive second configuration information sent by the network-side device, where the second configuration information includes at least one of the following: The seventh indication information is used to indicate the duration of the prohibition timer; Eighth indication information, used to indicate the reporting frequency of reporting relevant information of RLF prediction; Ninth indication information, used to indicate the inference frequency of RLF prediction; Wherein, during the running of the prohibition timer, the terminal is not allowed to report the relevant information of the RLF prediction.

24. A RLF prediction and reporting device, comprising: A first receiving module, configured to receive a first message sent by a terminal, where the first message carries relevant information about RLF prediction; The relevant information of the RLF prediction includes at least one of the following: RLF prediction results; Information about timers associated with RLF prediction; Predicted probability of random access failure; The predicted probability that the retransmission of the radio link control (RLC) layer reaches the maximum number of retransmissions; Prediction measurement results for predicting when RLF will occur.

25. The apparatus according to claim 24, further comprising: A first sending module is configured to send first configuration information to the terminal, where the first configuration information includes at least one of the following: First indication information is used to instruct the terminal to report relevant information of RLF prediction according to cell groups; Second indication information, used to instruct the terminal whether to report relevant information of a timer associated with RLF prediction; The third indication information is used to indicate whether the terminal reports the predicted probability that the retransmission of the RLC layer reaches the maximum number of retransmissions; fourth indication information, used to indicate a first threshold, where the first threshold is used to determine whether a timer associated with RLF prediction has timed out, or to determine whether to report relevant information of the timer associated with RLF prediction; fifth indication information, used to indicate a second threshold, where the second threshold is used to determine whether the predicted retransmission of the RLC layer reaches a maximum number of retransmissions, or to determine whether to report a probability that the predicted retransmission of the RLC layer reaches the maximum number of retransmissions; The sixth indication information is used to indicate the maximum duration of the RLF prediction.

26. The device according to claim 24 or 25, wherein The relevant information of the timer associated with the RLF prediction includes at least one of the following: Related information of timer T310; Related information of timer T312; Related information of a first timer, where the first timer is used for a predicted RLF.

27. The apparatus according to any one of claims 24 to 26, further comprising: A second receiving module is configured to receive a second message sent by the terminal, where the second message carries at least one of the following: a change in the relevant information of the previously reported RLF prediction; and instruction information for instructing to release the relevant information of the previously reported RLF prediction; The processing module is configured to ignore the relevant information of the RLF prediction reported last time.

28. The apparatus according to any one of claims 24 to 27, further comprising: The second sending module is configured to send second configuration information to the terminal, where the second configuration information includes at least one of the following: The seventh indication information is used to indicate the duration of the prohibition timer; Eighth indication information, used to indicate the reporting frequency of reporting relevant information of RLF prediction; Ninth indication information, used to indicate the inference frequency of RLF prediction; Wherein, during the running of the prohibition timer, the terminal is not allowed to report the relevant information of the RLF prediction.

29. A terminal comprising a processor and a memory, wherein the memory stores a program or instruction executable on the processor, and wherein the program or instruction, when executed by the processor, implements the steps of the RLF prediction and reporting method according to any one of claims 1 to 9.

30. 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 and reporting method according to any one of claims 10 to 18 are implemented.

31. 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 and reporting method according to any one of claims 1-9, or the steps of the RLF prediction and reporting method according to any one of claims 10-18.

32. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the RLF prediction and reporting method according to any one of claims 1 to 9, or implements the steps of the RLF prediction and reporting method according to any one of claims 10 to 18.

33. A computer program / program product, which, when executed by at least one processor, implements the steps of the RLF prediction and reporting method according to any one of claims 1 to 9, or implements the steps of the RLF prediction and reporting method according to any one of claims 10 to 18.

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