Method for wireless communication, and terminal device and network device

Abstract

Provided are a method for wireless communication, and a terminal device and a network device. The method for wireless communication comprises: when a first event is satisfied, a terminal device executing a preset behavior, wherein the first event is related to a cell reselection process, and the preset behavior comprises a behavior of the terminal device triggering cell reselection before a cell reselection condition is met.

Description

Method, terminal device and network device for wireless communication TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and more particularly, to a method, a terminal device and a network device for wireless communication. BACKGROUND

[0002] In some communication systems (such as a new radio (NR) system), in order to guarantee the signal coverage requirement of a terminal device in a mobility process, the terminal device can reselect to a neighbor cell when the neighbor cell satisfies a corresponding cell reselection condition. However, in the process of evaluating whether the neighbor cell satisfies the cell reselection condition, a scenario of short-term loss of coverage may occur.

[0003] SUMMARY

[0004] The present application provides a method, a terminal device and a network device for wireless communication. The various aspects involved in the present application are introduced below.

[0005] In a first aspect, a method for wireless communication is provided, comprising: if a first event is satisfied, a terminal device performs a preset behavior, wherein the first event is related to a cell reselection process, and the preset behavior includes a behavior of triggering cell reselection by the terminal device before a cell reselection condition is satisfied.

[0006] In a second aspect, a method for wireless communication is provided, comprising: a network device sends second configuration information to a terminal device, the second configuration information is related to a first event, and the second configuration information includes an eighth parameter, the eighth parameter is used to indicate a value of a first time length, and the first time length is used to indicate a length of a time window for predicting a cell measurement result by the terminal device; wherein the first event includes: at a second time after predicting the first time length at a first time, a measurement result of a first cell just satisfies a cell reselection condition; or at the second time after predicting the first time length at the first time, the measurement result of the first cell just satisfies the cell reselection condition and at the first time, a measurement result of a serving cell of the terminal device does not satisfy a cell camping criterion; or at a fourth time after predicting the first time length at the first time, a measurement result of the serving cell critically satisfies the cell camping criterion, and at the fourth time after predicting the first time length at the first time, the measurement result of the first cell does not satisfy the cell reselection condition; the first cell is a neighbor cell of the terminal device.

[0007] In a third aspect, a terminal device is provided, comprising: an execution module, configured to perform a preset behavior if a first event is satisfied, wherein the first event is related to a cell reselection process, and the preset behavior includes a behavior of triggering cell reselection by the terminal device before a cell reselection condition is satisfied.

[0008] In a fourth aspect, a network device is provided, comprising: a first sending module configured to send second configuration information to a terminal device, the second configuration information being related to a first event, the second configuration information comprising an eighth parameter, the eighth parameter being used to indicate a value of a first time length, the first time length being used to indicate a length of a time window for the terminal device to predict a cell measurement result; wherein the first event comprises: at a second time point after the first time length, a measurement result of a first cell just satisfies a cell reselection condition; or at a second time point after the first time length, a measurement result of a first cell just satisfies a cell reselection condition and at the first time point, a measurement result of a serving cell of the terminal device does not satisfy a cell camping criterion; or at a fourth time point after the first time length, a measurement result of a serving cell critically satisfies a cell camping criterion and at the first time point, a measurement result of a first cell does not satisfy a cell reselection condition; the first cell is a neighbor cell of the terminal device.

[0009] In a fifth aspect, a terminal device is provided, comprising a processor and a memory, the memory being configured to store one or more computer programs, and the processor being configured to invoke the computer programs in the memory to cause the terminal device to perform some or all of the steps in the method of the first aspect.

[0010] In a sixth aspect, a network device is provided, comprising a processor, a memory and a communication interface, the memory being configured to store one or more computer programs, and the processor being configured to invoke the computer programs in the memory to cause the network device to perform some or all of the steps in the method of the second aspect.

[0011] In a seventh aspect, an embodiment of the present application provides a communication system, which comprises the terminal device and / or the network device described above. In another possible design, the system can further comprise other devices interacting with the terminal device or the network device in the solutions provided by the embodiments of the present application.

[0012] In an eighth aspect, an embodiment of the present application provides a computer readable storage medium, which stores a computer program, and the computer program causes a computer to perform some or all of the steps in the methods of the above aspects.

[0013] In a ninth aspect, an embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps in the methods of the above aspects. In some implementations, the computer program product can be a software installation package.

[0014] In a tenth aspect, an embodiment of the present application provides a chip, which comprises a memory and a processor. The processor can invoke and run a computer program from the memory to implement some or all steps described in the methods of the above aspects.

[0015] In an embodiment of the present application, when the first event is met, the terminal device can trigger the cell reselection behavior before the cell reselection condition is met. Compared with the scheme that the terminal device must trigger the cell reselection after the cell reselection condition is met, the embodiment of the present application is beneficial to avoid the terminal device losing coverage in the process of evaluating whether the cell reselection condition is met, thereby being beneficial to reducing the probability of paging miss and improving user experience. BRIEF DESCRIPTION OF DRAWINGS

[0016] FIG. 1 is an example diagram of a system architecture of a wireless communication system to which embodiments of the present application can be applied.

[0017] FIG. 2 is a flow diagram of a method for wireless communication provided by an embodiment of the present application.

[0018] FIG. 3 is an example diagram of the relationship on a time axis at various times.

[0019] FIG. 4 is a schematic diagram of the structure of a terminal device provided by an embodiment of the present application.

[0020] FIG. 5 is a schematic diagram of the structure of a network device provided by an embodiment of the present application.

[0021] FIG. 6 is a schematic structural diagram of a communication apparatus provided by an embodiment of the present application. DETAILED DESCRIPTION

[0022] Communication system architecture

[0023] FIG. 1 is an example diagram of a system architecture of a wireless communication system 100 to which embodiments of the present application can be applied. The wireless communication system 100 can include a network device 110 and a terminal device 120. The network device 110 can be a device that communicates with the terminal device 120. The network device 110 can provide communication coverage for a specific geographic area and can communicate with the terminal device 120 located within the coverage area.

[0024] FIG. 1 exemplarily shows one network device and two terminal devices. Alternatively, the wireless communication system 100 can include multiple network devices and each network device can include other numbers of terminal devices within its coverage, which is not limited in the embodiments of the present application.

[0025] Alternatively, the wireless communication system 100 can further include a network controller, a mobile management entity, and other network entities, which are not limited in the embodiments of the present application.

[0026] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example, a 5th generation (5G) system or new radio (NR), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, and the like. The technical solutions provided in the present application can also be applied to future communication systems, such as a 6th generation mobile communication system, a satellite communication system, and the like.

[0027] The terminal device in the embodiments of the present application can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station (MS), a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The terminal device in the embodiments of the present application can refer to a device that provides voice and / or data connectivity for a user, and can be used to connect people, things, and machines, such as handheld devices with wireless connection functions, vehicle-mounted devices, and the like. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer (Pad), a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, and the like. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity, which provides a sidelink signal between UEs in V2X or D2D, and the like. For example, a cellular phone and a car communicate with each other using a sidelink signal. The cellular phone and the smart home device communicate with each other without relaying the communication signal through the base station.

[0028] In some embodiments, the network device in the embodiments of the present application can be a device for communicating with a terminal device, which can also be referred to as an access network device or a radio access network device, such as a network device can be a base station. The network device in the embodiments of the present application can refer to a radio access network (RAN) node (or device) that accesses a terminal device to a wireless network. The base station can broadly cover various names in the following or be replaced by the following names, such as: Node B (NodeB), evolved Node B (eNB), next generation Node B (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master station MeNB, auxiliary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), centralized unit (CU), distributed unit (DU), centralized unit-control plane (CU-CP), centralized unit-user plane (CU-UP), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, modem or chip for being disposed in the foregoing devices or apparatuses. The base station can also be a mobile switching center and a device that undertakes a base station function in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (M2M) communication, a network side device in 6G network, a device that undertakes a base station function in future communication system, etc. The base station can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form of the network device.

[0029] The base station can be fixed or mobile. For example, a helicopter or unmanned aerial vehicle can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, the helicopter or unmanned aerial vehicle can be configured to act as a device that communicates with another base station.

[0030] In some deployments, the network device in the embodiments of the present application can refer to a CU or a DU, or the network device includes a CU and a DU. The gNB can also include an AAU.

[0031] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on aircraft, balloons and satellites in the air. The scene where the network device and the terminal device are located in the embodiments of the present application is not limited.

[0032] It should be understood that all or part of the functions of the communication device in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform).

[0033] In some embodiments, the network device mentioned in the embodiments of the present application is a core network device (or a network element in the core network). Illustratively, the core network device can include one of the following: a location management function (LMF) network element, a network slice selection function (NSSF) network element, an authentication server function (AUSF) network element, a unified data management (UDM) network element, an access and mobility management function (AMF) network element, a session management function (SMF) network element, a policy control function (PCF) network element, a user plane function (UPF) network element, a sensing function (SF) network element, a network data analytics function (NWDAF) network element, and an AI function management entity.

[0034] In some embodiments, the network device mentioned in the embodiments of the present application is an operations, administration, and maintenance (OAM) device.

[0035] For the convenience of understanding, some related technical knowledge involved in the embodiments of the present application is introduced first. The following related technologies can be combined with the technical solutions of the embodiments of the present application in any manner as an optional scheme, and all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0036] In order to ensure user experience, for example, in order to ensure that a terminal device can be paged, the terminal device in a radio resource control (RRC) idle state or an RRC inactive state can perform a cell selection or a cell reselection behavior to camp on a cell or to reselect from one cell to another cell. When performing cell selection and / or cell reselection, the terminal device needs to evaluate whether the cell meets the camping condition or whether the cell meets the cell reselection condition. These conditions are introduced as follows.

[0037] S criterion

[0038] In the cell selection process, the terminal device needs to perform cell measurement result evaluation on the measured cell to determine whether the cell meets the camping condition. The cell camping criterion is also called the S criterion. When the signal measurement result of a certain cell meets the S criterion, the cell can be selected by the terminal device as a camping cell. The specific content of the S criterion can be seen from the following formula (1). S rxlev > 0 and S qual > 0 (1)

[0039] Wherein, S rxlev = Q rxlevmeas -(Q rxlevmin + Q rxlevminoffset )-P compensation -Q offsettemp , S qual = Q qualmeas -(Q qualmin + Q qualminoffset )-Q offsettemp .

[0040] S rxlev , indicates a cell selection reception value, in units of decibels (dB).

[0041] S qual indicates a cell selection quality value, in units of dB.

[0042] Q offsettemprepresents a temporary offset value in dB, which is used for the cell where connection setup failure occurs.

[0043] Q rxlevmeas represents a reference signal receiving power (RSRP) value of a measured cell.

[0044] Q qualmeas represents a reference signal receiving quality (RSRQ) value of a measured cell.

[0045] Q rxlevmin represents a minimum received strength requirement of RSRP in a cell, in dB. In some embodiments, Q rxlevmin may be obtained through a broadcast message (such as a system information block (SIB)). For example, Q rxlevmin may be obtained through one or more of the following: SIB1, SIB2, SIB4. As one example, if the terminal device supports a supplementary uplink (SUL) frequency point in the cell, the q-RxLevMinSUL broadcast in the system message can be taken as Q rxlevmin value. As another example, if the cell broadcasts a parameter QrxlevminoffsetcellSUL in SIB3 and / or SIB4, the corresponding Q rxlevmin needs to be added with the cell-level offset value to obtain the minimum received level of the cell, otherwise Q rxlevmin value is q-RxLevMin.

[0046] Q qualmin represents a minimum received strength requirement of RSRQ in a cell, in dB.

[0047] Q rxlevminoffset is an offset value. The offset value is used when a terminal device periodically searches for a high-priority public land mobile network (PLMN) while camping on a visited public land mobile network (VPLMN) to prevent ping-pong. rxlev offset value of Q rxlevmin is performed on the signal when evaluating the cell quality.

[0048] Q qualminoffsetis an offset value. The offset value is used when the terminal device residing on the VPLMN periodically searches for the high priority PLMN using S qual To prevent ping-pong, the Q qualmin of the signal is offset when evaluating the cell quality.

[0049] P compensation is in dB. If the terminal device supports additionalPmax in NS-PmaxList in system information, P compensation is max(P EMAX1 -P PowerClass , 0) - (min(P EMAX2 , P powerClass ) - min(P EMAX1 , P powerClass )) otherwise, P compensation is max(P EMAX1 -P PowerClass , 0). Where P EMAX1 and P EMAX2 represent the maximum uplink transmit power allowed by the terminal device in the cell, in dB. P EMAX1 and P EMAX2 are obtained from p-Max and NS-PmaxList in the broadcast message respectively. P powerClass represents the maximum uplink transmit power determined by the power class capability of the terminal device, in dB.

[0050] When the terminal device performs cell selection, it obtains Q rxlevmeas and Q qualmeas of the cell by measurement, and obtains other parameters in the S criterion formula from the system information of the cell and its own capability class, calculates S rxlev and S qual , and then compares them with 0. If S rxlev > 0 and S qual > 0, the terminal device considers that the cell meets the cell measurement requirements of cell selection and can select it as a camping cell. If the system information of the cell broadcasts that the cell is allowed to camp, the terminal device can select to camp on the cell.

[0051] Cell reselection condition

[0052] In different scenarios, the corresponding cell reselection conditions are different when the terminal device performs cell reselection. The cell reselection conditions are introduced respectively for different scenarios.

[0053] Scenario 1: Conditions required for the terminal device to reselect to a cell with higher frequency point priority (i.e. a cell with higher frequency point priority relative to the service cell)

[0054] In some embodiments, if the cell configures the parameter threshServingLowQ in the system broadcast information, the terminal device needs to at least meet condition 1 and condition 2 to reselect to the cell with higher frequency point priority.

[0055] Condition 1: S qual > Thresh x,highQ and the duration is not less than Treselection RAT . Wherein, S qual is the cell-level measurement result (the measurement quantity is RSRQ) corresponding to the cell with higher frequency point priority, Thresh x,highQ is the measurement result judgment threshold value configured by the network device, and Treselection RAT is the evaluation time threshold value configured by the network device.

[0056] Condition 2: The residence time of the terminal device in the current serving cell has exceeded 1 second.

[0057] In some embodiments, if the cell does not configure the parameter threshServingLowQ in the system broadcast information, the terminal device needs to at least meet condition 3 and condition 4 to reselect to the cell with higher frequency point priority.

[0058] Condition 3: S rxlev > Thresh x,highP and the duration is not less than Treselection RAT . Wherein, S rxlev is the cell-level measurement result (the measurement quantity is RSRP) corresponding to the cell with higher frequency point priority, Thresh x,highP is the measurement result judgment threshold value configured by the network device, and Treselection RAT is the evaluation time threshold value configured by the network device.

[0059] Condition 4: The residence time of the terminal device in the current serving cell has exceeded 1 second.

[0060] Scenario 2: The conditions that need to be met by the terminal device to reselect to the cell with the same frequency point priority (i.e. the cell with the same frequency point priority as the serving cell, including the same frequency cell and the different frequency cell with the same frequency point priority)

[0061] The conditions that need to be met by the terminal device to reselect to the cell with the same frequency point priority can also be called R criterion. The specific content of the R criterion can be seen from formula (2) and formula (3). s = Q meas，s + Q hyst - Q offsettemp (2) Rn = Q meas，n + Q offset - Q offsettemp (3)

[0062] R s represents the R value of the serving cell, in dB.

[0063] R n represents the R value of the neighbor cell, in dB.

[0064] Q hyst represents the cell ranking hysteresis factor.

[0065] Q meas represents the RSRP value of the serving cell or the neighbor cell, in dbm. Wherein, Q meas，s represents the RSRP value of the serving cell, Q meas,n represents the RSRP value of the neighbor cell.

[0066] For intra-frequency reselection, the parameter Q offset is equal to the sum of the inter-cell Q offset，n (there is a valid inter-cell Q offset，n in the system broadcast), otherwise 0 (there is no inter-cell Q offset，n in the system broadcast). For inter-frequency reselection, the parameter Q offset is equal to the sum of the inter-frequency Q offsetfrequency and the inter-cell Q offset，n (there is a valid inter-cell Q offset，n in the system broadcast), otherwise equal to the inter-frequency Q offsetfrequency (there is no inter-cell Q offset，n in the system broadcast).

[0067] Q offsettemp is a temporary offset, in dB, which is used for the cell where connection setup failure occurs.

[0068] The NR system can support multi-beam operation. In the scenario supporting multi-beam operation, when the terminal device performs cell reselection, the network device can configure the parameter rangeToBestCell through system information, which is used for determining the best cell.

[0069] In some embodiments, if the network device does not configure the parameter rangeToBestCell, the terminal device will reselect to the cell with the highest R ranking. In some embodiments, if the network device configures the parameter rangeToBestCell, the terminal device will reselect to the cell whose R value belongs to [R best -rangeToBestCell, R bestthe number of beams whose measurement results are within the range and are higher than a certain threshold (absThreshSS-Consolidation) is the least. Wherein, R best The R value corresponding to the cell with the highest R value among the cells evaluated by the R criterion. In some embodiments, if multiple cells satisfy the condition, the terminal device will reselect to the cell with the highest R value.

[0070] The terminal device needs to at least satisfy conditions 5 to 7 in the process of sorting and selecting cells.

[0071] Condition 5: Based on the above manner, it is evaluated that the new cell is better than the current serving cell and the duration of the better state is not less than Treselection NR .

[0072] Condition 6: If the terminal device is in a non-ordinary mobile state, the parameter Treselection NR and Q hyst need to be scaled.

[0073] Condition 7: The terminal device has stayed in the current serving cell for more than 1 second.

[0074] Scenario 3: The conditions that need to be satisfied when the terminal device reselects to a cell with a lower frequency point priority (i.e. a cell with a lower frequency point priority relative to the serving cell)

[0075] In some embodiments, if the cell configures the parameter threshServingLowQ in the system broadcast information, the terminal device needs to at least satisfy conditions 8 and 9 when reselecting to a cell with a lower frequency point priority.

[0076] Condition 8: The serving cell satisfies S qual > Threshserving, LowQ and the cell with a lower frequency point priority satisfies S qual > Thresh X，LowQ , and the duration of the condition is not less than Treselection RAT . Wherein, S qual is the cell-level measurement result (the measurement quantity is RSRQ) of the serving cell or the cell-level measurement result (the measurement quantity is RSRQ) corresponding to the cell with a lower frequency point priority, Threshserving, LowQ and Thresh X,LowQ are measurement result judgment thresholds configured by the network device, and Treselection RAT is an evaluation duration threshold configured by the network device.

[0077] Condition 9: The terminal device has stayed in the current serving cell for more than 1 second.

[0078] In some embodiments, if the cell does not configure the parameter threshServingLowP in the system broadcast information, the terminal device needs to at least meet conditions 10 and 11 for reselecting to the cell of the low priority frequency point.

[0079] Condition 10: The serving cell meets S qual ThreshServing,LowP and the cell of lower priority frequency meets S qual Thresh X，LowP , and the duration of meeting the condition is not less than Treselection RAT . Wherein, S qual is the cell level measurement result (measurement quantity is RSRP) of the serving cell or the cell level measurement result (measurement quantity is RSRP) corresponding to the cell of lower priority frequency, ThreshServing,LowP and Thresh X，LowP are the measurement result judgment thresholds configured by the network device, and Treselection RAT is the evaluation time threshold configured by the network device.

[0080] Condition 11: The terminal device has stayed in the current serving cell for more than 1 second.

[0081] Parameter scaling based on terminal device moving speed

[0082] For the terminal device in RRC idle state or RRC inactive state, in the evaluation process of cell reselection, the terminal device also needs to determine the speed state of the terminal device. As an implementation manner, the speed state of the terminal device can include three types: ordinary speed state, medium speed state, and high speed state. Different speed states are determined according to the number of cell reselections of the terminal device within a certain time. In some embodiments, if the terminal device is in the medium speed state or the high speed state, the terminal device also needs to perform scaling processing on the parameters Treselection RAT and Q hyst to adapt to the speed state of the terminal device. The introduction of the parameter scaling mechanism based on the speed state is beneficial to alleviate the differentiated influence of different speeds on the cell reselection process of the terminal device.

[0083] In some embodiments, the terminal device can reselect to the neighbor cell after the neighbor cell satisfies the corresponding cell reselection condition. However, in the process of evaluating whether the neighbor cell satisfies the corresponding cell reselection condition, the terminal device can be in a scenario of temporarily losing coverage (at this time, the cell measurement result of the serving cell does not satisfy the aforementioned cell camping criterion or S criterion). For example, when the terminal device is in a medium speed state or a high speed state, since the division of the speed state is based on a parameter determined according to human experience, it does not necessarily match the actual needs of the terminal device. In this scenario, if the speed determination parameter is not reasonable, the terminal device can face the risk of temporarily losing coverage.

[0084] To solve the above problem, the inventors find that the reason why the terminal device loses coverage temporarily in the process of evaluating whether the neighbor cell satisfies the cell reselection condition is that the cell measurement result of the serving cell of the terminal device can not satisfy the cell camping criterion (i.e., the S criterion) in the process of evaluating whether the neighbor cell satisfies the cell reselection condition, resulting in the terminal device losing coverage. However, the current condition for cell reselection is that the terminal device can trigger the behavior of reselecting to the target neighbor cell only after the neighbor cell satisfies the corresponding cell reselection condition, which ignores the fact that the cell measurement result of the serving cell can not satisfy the cell camping criterion during the evaluation of the cell reselection condition, thereby causing the interruption of the reselection process. After the interruption occurs, the terminal device can only re-search for a cell that satisfies the cell camping criterion for camping, and the process of re-searching for a cell means that the terminal device cannot receive a paging message for an additional period of time, which increases the probability of missed calls and reduces the user experience. Therefore, embodiments of the present application propose that the terminal device can trigger cell reselection before the neighbor cell satisfies the corresponding cell reselection condition, so that the terminal device can reselect from the serving cell to the neighbor cell before losing coverage, thereby reducing the probability of missed calls and improving the user experience.

[0085] Hereinafter, the method embodiments of the present application will be introduced first.

[0086] FIG. 2 is a flow diagram of a method for wireless communication provided by an embodiment of the present application. The method shown in FIG. 2 can be performed by a terminal device, which can be, for example, the terminal device 120 shown in FIG. 1. In some embodiments, the method shown in FIG. 2 can be performed by the terminal device and the network device in interaction. For example, in the case where the configuration related to the behavior of the terminal device triggering cell reselection before the cell reselection condition is satisfied is configured by the network device, the method shown in FIG. 2 can be performed by the terminal device and the network device in interaction. Alternatively, in the case where the network device needs to indicate to the terminal device whether the behavior of the terminal device triggering cell reselection before the cell reselection condition is satisfied is allowed, the method shown in FIG. 2 can be performed by the terminal device and the network device in interaction.

[0087] The method shown in FIG. 2 includes step S210, which is described below.

[0088] In step S210, if the first event is satisfied, the terminal device performs a preset behavior.

[0089] In some embodiments, the first event is related to a cell reselection procedure. Alternatively, the first event includes an event occurring in the cell reselection procedure. For example, the first event can be related to one or more of the following: a cell reselection condition, a measurement result of a serving cell in a cell reselection condition evaluation process.

[0090] In some embodiments, the first event can include that, at a first time, the terminal device predicts that a measurement result of the first cell at a second time after a first time length just satisfies a cell reselection condition. In this implementation, the first event is equivalent to the terminal device predicting that the measurement result of the first cell after the first time length just satisfies the cell reselection condition.

[0091] In some embodiments, the first event can include that, at a first time, the terminal device predicts that a measurement result of the first cell at a second time after a first time length just satisfies a cell reselection condition, and at the first time, the terminal device predicts that a measurement result of a serving cell at the second time does not satisfy a cell camping criterion. That is, the first event can include that the terminal device predicts that the measurement result of the serving cell does not satisfy the cell camping criterion at or before the cell reselection condition is satisfied. In this implementation, the first event is equivalent to the terminal device simultaneously predicting that the measurement result of the first cell after the first time length just satisfies the cell reselection condition and that the measurement result of the serving cell after the first time length does not satisfy the cell camping criterion.

[0092] In some embodiments, the first event can include that, at a first time, the terminal device predicts that a measurement result of a serving cell at a fourth time after a first time length critically satisfies a cell camping criterion, and at the first time, the terminal device predicts that a measurement result of the first cell at the fourth time does not satisfy a cell reselection condition. That is, the first event can include that the terminal device simultaneously predicts that the measurement result of the first cell does not satisfy the cell reselection condition when the measurement result of the serving cell does not satisfy the cell camping criterion. In this implementation, the first event is equivalent to the terminal device simultaneously predicting that the measurement result of the serving cell after the first time length critically satisfies the cell camping criterion and that the measurement result of the first cell after the first time length does not satisfy the cell reselection condition.

[0093] In the embodiments of the present application, the first cell is a neighbor cell of the terminal device, or in other words, the first cell is a neighbor cell of a serving cell of the terminal device.

[0094] In some embodiments, the measurement result of the first cell at the second time instant just satisfying the cell reselection condition can also be understood as: the measurement result of the first cell does not satisfy the cell reselection condition before the second time instant (or between the first time instant and the second time instant), and the measurement result of the first cell satisfies the cell reselection condition at the second time instant.

[0095] In the embodiments of the present application, the measurement result of the serving cell just satisfying the cell camping criterion can also be understood as the measurement result of the serving cell just not satisfying the cell camping criterion. The measurement result of the serving cell just not satisfying the cell camping criterion can be understood as the S qual value corresponding to the cell-level RSRQ measurement result of the serving cell just being equal to 0, or the S rxlev value corresponding to the cell-level RSRP measurement result of the serving cell just being equal to 0.

[0096] In some embodiments, the above-mentioned cell camping criterion can be used by the terminal device to determine whether the corresponding cell can be camped. For example, when a cell satisfies the cell camping criterion, the terminal device determines that the cell can be camped. For another example, when a cell does not satisfy the cell camping criterion, the terminal device determines that the cell cannot be camped. In the cell reselection condition evaluation process (i.e., before the behavior of the terminal device reselecting to a neighbor cell is triggered), if the measurement result of the serving cell of the terminal device does not satisfy the cell camping criterion, it is considered that the terminal device loses coverage, and during the period of losing coverage, the terminal device cannot normally receive the paging message sent by the network device.

[0097] In some embodiments, the above-mentioned cell camping criterion can include the S criterion. For related introduction of the S criterion, please refer to the above, which will not be described here.

[0098] In some embodiments, when the terminal device predicts that the measurement result of the serving cell at the second time instant does not satisfy the cell camping criterion, the terminal device can determine that the terminal device continues to camp in the serving cell may face the risk of losing coverage.

[0099] In some embodiments, the "measurement result of the first cell" mentioned in the embodiments of the present application refers to the cell-level measurement result of the first cell. Similarly, the "measurement result of the serving cell" mentioned in the embodiments of the present application refers to the cell-level measurement result of the serving cell. It should be noted that, unless otherwise emphasized, the "measurement result of the first cell" and / or the "measurement result of the serving cell" mentioned below refers to the cell-level measurement result, which will not be described hereinafter.

[0100] The embodiment of the present application does not limit the first time, which can be any time in the cell reselection evaluation process, i.e., the terminal device can predict whether the measurement result of the first cell meets the cell reselection condition and / or whether the measurement result of the serving cell meets the cell camping criterion at any time in the cell reselection evaluation process. As an example, the first time can be the current time, i.e., the terminal device can predict whether the measurement result of the first cell meets the cell reselection condition and / or whether the measurement result of the serving cell meets the cell camping criterion at the current time.

[0101] In some embodiments, the first duration can be used to indicate the length of the time window in which the terminal device predicts the cell measurement result. For example, the first duration can be used to indicate the maximum length of the time window in which the terminal device predicts the cell measurement result, i.e., the maximum time domain prediction duration for the terminal device to perform the cell measurement result prediction behavior based on the AI technology. In other words, the first duration can be used to indicate how long the terminal device can predict the cell level measurement result.

[0102] In some embodiments, the first duration in different scenarios can be defined separately. For example, the first duration corresponding to the scenario where the frequency point priority of the first cell is higher than that of the serving cell can be defined separately from the first duration corresponding to the scenario where the frequency point priority of the first cell is equal to that of the serving cell, which is more flexible. In some embodiments, the first duration can be uniformly defined for different scenarios. For example, the first duration corresponding to the scenario where the frequency point priority of the first cell is higher than that of the serving cell can be defined using one parameter (i.e., one parameter is shared by different scenarios) as the first duration corresponding to the scenario where the frequency point priority of the first cell is equal to that of the serving cell, which can simplify the measurement prediction behavior of the terminal device.

[0103] The embodiment of the present application does not limit the indication method of the first duration. As an implementation, the first duration can be indicated by the network device. As another implementation, the first duration can be predefined or preconfigured, such as predefined by a protocol. The indication method of the first duration will be introduced later, which will not be described here in detail.

[0104] In some embodiments, the second time is determined according to the first time and the first duration. For example, the second time refers to the time after the first time and spaced apart from the first time by the first duration. Taking the first duration equal to 1 second as an example, assuming that the first time is the 0th second, the second time is the 1st second; assuming that the first time is the 2nd second, the second time is the 3rd second.

[0105] In some embodiments, the second time point refers to a time point at which the measurement result of the first cell just meets the cell reselection condition. That is, the terminal device predicts that before the second time point, the measurement result of the first cell does not meet the cell reselection condition, and at the second time point, the measurement result of the first cell starts to meet the cell reselection condition.

[0106] In some embodiments, the second time point at which the measurement result of the first cell just meets the cell reselection condition can be understood or replaced as: the first time point at which the measurement result of the first cell does not meet the cell reselection condition.

[0107] In some embodiments, in different scenarios, the meaning of the second time point at which the measurement result of the first cell just meets the cell reselection condition can be different. Or, in different scenarios, the meaning of the first time point at which the measurement result of the first cell does not meet the cell reselection condition can be different. This will be introduced below in combination with different scenarios.

[0108] Scenario 1: The frequency point priority of the first cell is higher than the frequency point priority of the serving cell

[0109] In some embodiments, if the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the meaning of the second time point at which the measurement result of the first cell just meets the cell reselection condition can be that: when the second time point is reached, the duration of the state in which the measurement result of the first cell is greater than the first threshold value is equal to the first time threshold. That is, if the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the meaning of the second time point at which the measurement result of the first cell just meets the cell reselection condition can be that: when the second time point is reached, the measurement result of the first cell is greater than the first threshold, and the duration is equal to the first time threshold. Or, if the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the meaning of the second time point at which the measurement result of the first cell just meets the cell reselection condition can be that: before the second time point, the measurement result of the first cell is less than the first threshold or the measurement result of the first cell is greater than the first threshold but the duration is less than the first time threshold; when the second time point is reached, the measurement result of the first cell is greater than the first threshold, and the duration is equal to the first time threshold.

[0110] In some embodiments, if the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, and the serving cell broadcasts the threshServingLowQ parameter, the measurement result of the first cell is the RSRQ measurement result, or the measurement quantity corresponding to the measurement result of the first cell is RSRQ.

[0111] In some embodiments, if the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, and the serving cell does not broadcast the threshServingLowQ parameter, the measurement result of the first cell is an RSRP measurement result, or in other words, the measurement quantity corresponding to the measurement result of the first cell is RSRP.

[0112] It should be noted that in the embodiments of the present application, the threshServingLowQ parameter can be replaced by other names, and the embodiments of the present application do not limit this as long as the parameter has the same or similar meaning as the threshServingLowQ parameter in related technologies.

[0113] In some embodiments, the first threshold is a measurement result judgment threshold. For example, the first threshold can be a measurement result judgment threshold configured by the network device. Taking the measurement result of the first cell as an RSRQ measurement result as an example, the first threshold can be a parameter Thresh x，highQ . Taking the measurement result of the first cell as an RSRP measurement result as an example, the first threshold can be a parameter Thresh x，highP .

[0114] In some embodiments, the first time length threshold is an evaluation time length threshold. For example, the first time length threshold can be an evaluation time length threshold configured by the network device. Illustratively, the first time length threshold can be a parameter Treselection RAT .

[0115] In some embodiments, if the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the first time does not satisfy the cell reselection condition can be that at the first time, the measurement result of the first cell is greater than the first threshold, but the duration corresponding to the state that the measurement result of the first cell is greater than the first threshold before the first time is less than the first time length threshold, or at the first time, the measurement result of the first cell is less than or equal to the first threshold. In this case, if the terminal device predicts that the measurement result of the serving cell at the second time does not satisfy the cell camping criterion or the terminal device predicts that the measurement result of the serving cell at the fourth time critically satisfies the cell camping criterion, the terminal device can perform a preset behavior. The fourth time is the time when the terminal device predicts that the measurement result of the serving cell critically satisfies the cell camping criterion. In some embodiments, the fourth time is later than the first time and equal to or earlier than the second time.

[0116] In some embodiments, the meaning that the terminal device predicts that the measurement result of the serving cell at the fourth time meets the critical criterion of the cell camping criterion can be that before the fourth time, the measurement result of the serving cell meets the cell camping criterion, and after the fourth time, the measurement result of the serving cell does not meet the cell camping criterion. Taking scenario 1 as an example, the meaning that the measurement result of the serving cell at the fourth time meets the critical criterion of the cell camping criterion can be that the terminal device predicts that the S qual value corresponding to the cell-level RSRQ measurement result of the serving cell at the fourth time is close to equal to 0, or the terminal device predicts that the S rxlev value corresponding to the cell-level RSRP measurement result of the serving cell at the fourth time is close to equal to 0.

[0117] For ease of understanding, the first event under scenario 1 is introduced below in combination with examples.

[0118] Example 1: It is assumed that the current time is the first time, and the cell-level RSRQ measurement result of the first cell at the first time is greater than the first threshold, but the duration t1 corresponding to the state that the cell-level RSRQ measurement result of the first cell is greater than the first threshold up to the first time is less than the first time length threshold, where it is assumed that t1 is 1s, and the first time length is 2s.

[0119] Example 1 Case 1: The first time length threshold is equal to 3s, at this time, the terminal device can predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time farthest, if the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time do not meet the cell camping criterion, the terminal device considers determining the reselection target cell in advance without waiting until the second time to determine the reselection target cell. In some implementation modes, in order to determine the reselection target cell before the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell do not meet the cell camping criterion, the terminal device can first determine the fourth time, after the fourth time is determined, between the first time and the fourth time, the terminal device can perform a preset behavior.

[0120] Example 1 Case Two: the first time threshold is equal to 5s, at this time, the terminal device is still unable to predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time, and is also unable to determine whether the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time meet the cell camping criterion. Assuming that the fourth time is just 2s away from the first time, at the first time, the terminal device can just predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the fourth time, if the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the fourth time just meet the cell camping criterion, the terminal device considers determining the reselection target cell in advance without waiting until the second time to determine the reselection target cell. In some implementation manners, in order to determine the reselection target cell before the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell do not meet the cell camping criterion, the terminal device can first determine the fourth time, after the fourth time is determined, between the first time and the fourth time, the terminal device can perform a preset behavior.

[0121] Example 2: assuming that the current time is the first time, and the cell-level RSRP measurement result of the first cell at the first time is greater than the first threshold, but the duration t4 corresponding to the state that the cell-level RSRP measurement result of the first cell is greater than the first threshold until the first time is less than the first time threshold, wherein it is assumed that t4 is 1s and the first time is 2s.

[0122] Example 2 Case One: the first time threshold is equal to 3s, at this time, the terminal device can just predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time, if the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time do not meet the cell camping criterion, the terminal device considers determining the reselection target cell in advance without waiting until the second time to determine the reselection target cell. In some implementation manners, in order to determine the reselection target cell before the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell do not meet the cell camping criterion, the terminal device can first determine the fourth time, after the fourth time is determined, between the first time and the fourth time, the terminal device can perform a preset behavior.

[0123] Case 2 of Example 2: the first time length threshold value is equal to 5s, at this time, the terminal device is still unable to predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time, and is also unable to determine whether the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time meet the cell camping criterion. Assuming that the fourth time is just 2s away from the first time, at the first time, the terminal device can just predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the fourth time, if the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the fourth time just meet the cell camping criterion, the terminal device considers determining the reselection target cell in advance without waiting until the second time to determine the reselection target cell. In some implementation manners, in order to determine the reselection target cell before the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell do not meet the cell camping criterion, the terminal device can first determine the fourth time, after the fourth time is determined, between the first time and the fourth time, the terminal device can perform a preset behavior.

[0124] Case 2: the frequency point priority of the first cell is equal to the frequency point priority of the serving cell

[0125] In some embodiments, if the frequency point priority of the first cell is equal to the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the second time just meets the cell reselection condition can be that: when the second time arrives, the terminal device determines that the ranking of the first cell is the highest according to the first criterion, and the duration of the state that the ranking of the first cell is the highest corresponds to the first time length threshold value. That is, if the frequency point priority of the first cell is equal to the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the second time just meets the cell reselection condition can be that: before the second time arrives, the terminal device determines that the ranking of the first cell is not the highest according to the first criterion, or the terminal device determines that the ranking of the first cell is the highest according to the first criterion but the duration of the state that the ranking of the first cell is the highest corresponds to a time length less than the first time length threshold value; when the second time arrives, the terminal device determines that the ranking of the first cell is the highest according to the first criterion, and the duration of the state that the ranking of the first cell is the highest corresponds to the first time length threshold value.

[0126] In some embodiments, the first criterion can be used by the terminal device to rank and / or select a cell when performing cell reselection. For example, the first criterion can be an R criterion. Details about the R criterion can be found in the foregoing, which will not be repeated here.

[0127] In some embodiments, the first time duration threshold is an evaluation time duration threshold. For example, the first time duration threshold can be an evaluation time duration threshold configured by the network device. Illustratively, the first time duration threshold can be a parameter Treselection configured by the network device. RAT .

[0128] In some embodiments, if the frequency point priority of the first cell is equal to the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the first time instant does not satisfy the cell reselection condition can be that, at the first time instant, the terminal device determines that the first cell has the highest ranking according to the first criterion, but the duration corresponding to the highest ranking state is less than the first time duration threshold, or at the first time instant, the terminal device determines that the first cell does not have the highest ranking according to the first criterion. In this case, if the terminal device predicts that the measurement result of the serving cell at the second time instant does not satisfy the cell camping criterion or the terminal device predicts that the measurement result of the serving cell at the fourth time instant critically satisfies the cell camping criterion, the terminal device can perform a preset behavior. The fourth time instant is the time instant at which the terminal device predicts that the measurement result of the serving cell critically satisfies the cell camping criterion. In some embodiments, the fourth time instant is later than the first time instant and is equal to or earlier than the second time instant.

[0129] In some embodiments, the meaning that the terminal device predicts that the measurement result of the serving cell at the fourth time instant critically satisfies the cell camping criterion can be that, before the fourth time instant, the measurement result of the serving cell satisfies the cell camping criterion, and after the fourth time instant, the measurement result of the serving cell does not satisfy the cell camping criterion. Taking scenario 2 as an example, the meaning that the measurement result of the serving cell at the fourth time instant critically satisfies the cell camping criterion can be that the terminal device predicts that the cell-level RSRQ measurement result of the serving cell at the fourth time instant corresponds to an S value close to 0, or the terminal device predicts that the cell-level RSRP measurement result of the serving cell at the fourth time instant corresponds to an S value close to 0. qual rxlev

[0130] For ease of understanding, the first event under scenario 2 is introduced below in combination with an example.

[0131] Example 3: Assuming that the current time instant is the first time instant, and the terminal device determines that the first cell has the highest ranking according to the first criterion at the first time instant, but the duration t7 corresponding to the highest ranking state is less than the first time duration threshold, where t7 is 1s and the first time duration is 2s.

[0132] ​​Example 3 case one: the first time length threshold value is equal to 3s, at this time, the terminal device can predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time, if the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time do not satisfy the cell camping criterion, the terminal device considers determining the reselection target cell in advance without waiting until the second time to determine the reselection target cell. In some implementation manners, in order to determine the reselection target cell before the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell do not satisfy the cell camping criterion, the terminal device can first determine the fourth time, after the fourth time is determined, between the first time and the fourth time, the terminal device can perform the preset behavior.

[0133] Example 3 case two: the first time length threshold value is equal to 5s, at this time, the terminal device cannot predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time, and cannot judge whether the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time satisfy the cell camping criterion. Assuming that the fourth time is just 2s away from the first time, at the first time, the terminal device can predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the fourth time, if the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the fourth time just satisfy the cell camping criterion, the terminal device considers determining the reselection target cell in advance without waiting until the second time to determine the reselection target cell. In some implementation manners, in order to determine the reselection target cell before the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell do not satisfy the cell camping criterion, the terminal device can first determine the fourth time, after the fourth time is determined, between the first time and the fourth time, the terminal device can perform the preset behavior.

[0134] Scenario 3: the frequency point priority of the first cell is lower than the frequency point priority of the serving cell

[0135] In some embodiments, if the frequency point priority of the first cell is lower than the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the second time just satisfies the cell reselection condition can be that: when the second time arrives, the first condition is satisfied and the duration corresponding to the state in which the first condition is satisfied is equal to the first time length threshold value. Or, if the frequency point priority of the first cell is lower than the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the second time just satisfies the cell reselection condition can be that: before the second time, the first condition is not satisfied or the first condition is satisfied but the duration corresponding to the state in which the first condition is satisfied is less than the first time length threshold value; when the second time arrives, the first condition is satisfied and the duration corresponding to the state in which the first condition is satisfied is equal to the first time length threshold value.

[0136] In some embodiments, the first condition is related to one or more of the following: the measurement result of the first cell, the measurement result of the serving cell. For example, the first condition can comprise one or more of the following: the measurement result of the first cell is greater than a second threshold, the measurement result of the serving cell is less than a third threshold. As an example, the first condition can comprise: the measurement result of the first cell is greater than the second threshold and the measurement result of the serving cell is less than the third threshold.

[0137] In some embodiments, if the frequency point priority of the first cell is lower than the frequency point priority of the serving cell, and the serving cell broadcasts the threshServingLowQ parameter, the measurement result of the first cell is an RSRQ measurement result, or in other words, the measurement quantity corresponding to the measurement result of the first cell is RSRQ.

[0138] In some embodiments, if the frequency point priority of the first cell is lower than the frequency point priority of the serving cell, and the serving cell does not broadcast the threshServingLowQ parameter, the measurement result of the first cell is an RSRP measurement result, or in other words, the measurement quantity corresponding to the measurement result of the first cell is RSRP.

[0139] In some embodiments, the second threshold and / or the third threshold is a measurement result judgment threshold. For example, the second threshold and / or the third threshold can be a measurement result judgment threshold configured by the network device. Taking the measurement result of the first cell as an RSRQ measurement result as an example, the second threshold can be a parameter Thresh x，lowQ serving,lowQ configured by the network device, and the third threshold can be a parameter Thresh x，lowP serving,lowP configured by the network device. Taking the measurement result of the first cell as an RSRP measurement result as an example, the second threshold can be a parameter Thresh RAT serving,lowP configured by the network device.

[0140] In some embodiments, the first time length threshold is an evaluation time length threshold. For example, the first time length threshold can be an evaluation time length threshold configured by the network device. Illustratively, the first time length threshold can be a parameter Treselection RAT configured by the network device.

[0141] In some embodiments, if the frequency point priority of the first cell is lower than the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the first time instant does not satisfy the cell reselection condition can be that, at the first time instant, the first condition is satisfied, and the duration corresponding to the state in which the first condition is satisfied is less than the first time duration threshold, or at the first time instant, the first condition is not satisfied. In this case, if the terminal device predicts that the measurement result of the serving cell at the second time instant does not satisfy the cell camping criterion or the terminal device predicts that the measurement result of the serving cell at the fourth time instant critically satisfies the cell camping criterion, the terminal device can perform a preset behavior. The fourth time instant is the time instant at which the terminal device predicts that the measurement result of the serving cell critically satisfies the cell camping criterion. In some embodiments, the fourth time instant is later than the first time instant and is equal to or earlier than the second time instant.

[0142] In some embodiments, the meaning that the terminal device predicts that the measurement result of the serving cell at the fourth time instant critically satisfies the cell camping criterion can be that, before the fourth time instant, the measurement result of the serving cell satisfies the cell camping criterion, and after the fourth time instant, the measurement result of the serving cell does not satisfy the cell camping criterion. Taking scenario 3 as an example, the meaning that the measurement result of the serving cell at the fourth time instant critically satisfies the cell camping criterion can be that the S qual value corresponding to the cell-level RSRP measurement result of the serving cell at the fourth time instant predicted by the terminal device is close to equal to 0, or the S rxlev value corresponding to the cell-level RSRP measurement result of the serving cell at the fourth time instant predicted by the terminal device is close to equal to 0.

[0143] In order to facilitate understanding, the first event under scenario 3 is introduced below in combination with examples.

[0144] Example 4: It is assumed that the current time instant is the first time instant, and at the first time instant, the first condition is satisfied and the duration t10 corresponding to the state in which the first condition is satisfied is less than the first time duration, where it is assumed that t10 is 1s and the first time duration is 2s.

[0145] Example 4 Case 1: The first time duration threshold is equal to 3s, at this time, the terminal device can predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time instant farthest, if the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time instant do not satisfy the cell camping criterion, the terminal device considers determining the reselection target cell in advance without waiting until the second time instant arrives to determine the reselection target cell. In some implementations, in order to determine the reselection target cell before the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell do not satisfy the cell camping criterion, the terminal device can first determine the fourth time instant, after the fourth time instant is determined, between the first time instant and the fourth time instant, the terminal device can perform a preset behavior.

[0146] Example 4 Case II: the first time threshold is equal to 5s, at this time, the terminal device is still unable to predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time, and is also unable to determine whether the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time meet the cell camping criterion. Assuming that the fourth time is just 2s away from the first time, at the first time, the terminal device can just predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the fourth time, if the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the fourth time meet the cell camping criterion, the terminal device considers determining the target cell for reselection in advance without waiting until the second time to determine the target cell for reselection. In some implementation manners, in order to determine the target cell for reselection before the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell do not meet the cell camping criterion, the terminal device can first determine the fourth time, after the fourth time is determined, between the first time and the fourth time, the terminal device can perform a preset behavior.

[0147] Example 5: assuming that the current time is the first time, and the first condition is met at the first time, and the duration t13 corresponding to the state in which the first condition is met is less than the first time threshold, wherein t13 is assumed to be 1s, and the first time is 2s.

[0148] Example 5 Case I: the first time threshold is equal to 3s, at this time, the terminal device can just predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time, if the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time do not meet the cell camping criterion, the terminal device considers determining the target cell for reselection in advance without waiting until the second time to determine the target cell for reselection. In some implementation manners, in order to determine the target cell for reselection before the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell do not meet the cell camping criterion, the terminal device can first determine the fourth time, after the fourth time is determined, between the first time and the fourth time, the terminal device can perform a preset behavior.

[0149] Case two of example 5: the first time length threshold is equal to 5s, at this time, the terminal device is still unable to predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time, and is also unable to determine whether the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the second time meet the cell camping criterion. Assuming that the fourth time is just 2s away from the first time, at the first time, the terminal device can just predict the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the fourth time, if the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell at the fourth time meet the cell camping criterion, the terminal device considers determining the reselection target cell in advance without waiting until the second time comes to determine the reselection target cell. In some implementation manners, in order to determine the reselection target cell before the cell-level RSRQ measurement result and the cell-level RSRP measurement result of the serving cell do not meet the cell camping criterion, the terminal device can first determine the fourth time, after the fourth time is determined, between the first time and the fourth time, the terminal device can perform a preset behavior.

[0150] It should be noted that the speed state of the terminal device is not limited in the embodiments of the present application. Exemplarily, the speed state of the terminal device can include one or more of the following: normal speed state, medium speed state, high speed state.

[0151] In some embodiments, different speed states are determined according to the number of cell reselections of the terminal device within a certain time. For example, when the number of cell reselections of the terminal device within a certain time is less than a first quantity threshold (such as NCR_M), it can be considered that the speed state of the terminal device is a normal speed state; when the number of cell reselections of the terminal device is greater than or equal to the first quantity threshold and less than a second quantity threshold (such as NCR_H), it can be considered that the speed state of the terminal device is a medium speed state; when the number of cell reselections of the terminal device is greater than or equal to the second quantity threshold, it can be considered that the speed state of the terminal device is a high speed state. As an example, when the number of reselections of the terminal device within 60s is less than 4 times, it can be considered that the speed state of the terminal device is a normal speed state; when the number of cell reselections of the terminal device within 60s is greater than or equal to 4 times and less than 8 times, it can be considered that the speed state of the terminal device is a medium speed state; when the number of cell reselections of the terminal device within 60s is greater than or equal to 8 times, it can be considered that the speed state of the terminal device is a high speed state.

[0152] In some embodiments, if the speed state of the terminal device is a medium speed state or a high speed state, the terminal device can adjust the first time length threshold and the parameter Q hystscaling is performed. That is, even if the first time length threshold and the parameter Q hyst scaling is performed. The solution provided by the embodiments of the present application is still applicable.

[0153] It should be noted that the cell reselection condition in the prior art introduced in the present application is for the NR communication system. If the cell reselection condition is modified in the future communication system, the idea of the present application is still applicable, that is, if the first event is met, the terminal device triggers the cell reselection behavior before the cell reselection condition is met, thereby avoiding the terminal device losing coverage because the measurement result of the serving cell does not meet the cell camping criterion.

[0154] The first event is introduced above, and the preset behavior performed by the terminal device is introduced below.

[0155] In some embodiments, the preset behavior includes the behavior of triggering cell reselection by the terminal device before the cell reselection condition is met. That is, the terminal device can trigger cell reselection (i.e., perform the behavior of cell reselection) before the cell reselection condition is met, thereby facilitating the avoidance of the situation that the terminal device loses coverage in the cell reselection evaluation process. For example, the embodiments of the present application can effectively avoid the situation that the terminal device loses coverage due to unreasonable setting of the parameters related to cell reselection evaluation (such as the first time length threshold and / or the speed scaling related parameters) configured by the network device. That is, in the embodiments of the present application, the terminal device can perform the behavior of reselecting to the target cell before the cell reselection condition is met in the cell reselection evaluation process (for example, if it is predicted that the measurement result of the serving cell does not meet the cell camping criterion before the cell reselection condition is met in the cell reselection evaluation process, the terminal device can perform the behavior of reselecting to the target cell before the cell reselection condition is met), which can effectively avoid the scenario that the terminal device loses the coverage of the serving cell, reduce the probability of paging miss occurrence, and improve the user experience.

[0156] In the embodiments of the present application, the terminal device can perform the behavior of reselecting to the first cell at one of the first time to the fourth time in the case where the first event is met. The embodiments of the present application do not limit the time when the terminal device specifically performs the behavior of reselecting to the first cell, which is introduced below in combination with FIG. 3. FIG. 3 shows the relationship between the time axes of the various times, and the relationship between the various times mentioned below can be referred to FIG. 3.

[0157] It should be noted that in the following introduction of the preset behavior, the terminal device still needs to preferentially evaluate the first cell with a higher frequency point priority, secondly evaluate the first cell with the same frequency point priority, and finally evaluate the first cell with a lower frequency point priority, relative to the serving cell.

[0158] In some embodiments, the preset behavior described above can include: at the first time, the terminal device determines a first cell as a target cell and reselects to the first cell. If the first event is that at the first time, the terminal device predicts that at a second time after a first time length, the measurement result of the first cell just meets the cell reselection condition; or at the first time, the terminal device predicts that at a second time after a first time length, the measurement result of the first cell just meets the cell reselection condition and at the first time, the terminal device predicts that at the second time, the measurement result of the serving cell of the terminal device does not meet the cell camping criterion, then the first cell here refers to the cell that at the first time, the terminal device predicts to meet the corresponding cell reselection condition earliest. For cells with the same frequency point priority, if the number of the first cells meeting the first event of the first time is more than one, the terminal device selects one of the first cells meeting the first event as a target cell and reselects to the first cell, or the terminal device sorts the first cells meeting the first event according to the R criterion, and selects the first cell with the highest ranking at the first time as a target cell and reselects to the first cell. If the first event is that at the first time, the terminal device predicts that at a fourth time after a first time length, the measurement result of the serving cell meets the cell camping criterion critically, and at the first time, the terminal device predicts that at the fourth time, the measurement result of the first cell does not meet the cell reselection condition, for cells with the same frequency point priority, the terminal device selects a first cell with the best measurement result from the first cells meeting the first event as a target cell and reselects to the first cell, or the terminal device sorts the first cells meeting the first event according to the R criterion, and selects the first cell with the highest ranking at the first time as a target cell and reselects to the first cell.

[0159] The related description about the first time can be referred to the above, which will not be described in detail here.

[0160] In some embodiments, the preset behavior can include: reaching a third time, the terminal device determines the first cell as the target cell and reselects to the first cell. The third time is a future time of the first time, and a time interval between the third time and the first time is the second time length. If the first event is that at the first time, the terminal device predicts that at a second time after the first time length, the measurement result of the first cell just satisfies the cell reselection condition; or at the first time, the terminal device predicts that at a second time after the first time length, the measurement result of the first cell just satisfies the cell reselection condition, and at the first time, the terminal device predicts that at the second time, the measurement result of the serving cell of the terminal device does not satisfy the cell camping criterion, then the first cell here refers to the cell that at the first time, the terminal device predicts the earliest to satisfy the corresponding cell reselection condition. For cells with the same frequency point priority, if the number of the first cells satisfying the first event at the first time is more than one, the terminal device selects one of the first cells as the target cell and reselects to the first cell at the third time, or at the first time, the terminal device sorts the first cells satisfying the first event according to the R criterion, and selects the first cell with the highest ranking at the first time as the target cell and reselects to the first cell at the third time. If the first event is that at the first time, the terminal device predicts that at a fourth time after the first time length, the measurement result of the serving cell critically satisfies the cell camping criterion, and at the first time, the terminal device predicts that at the fourth time, the measurement result of the first cell does not satisfy the cell reselection condition, for cells with the same frequency point priority, the terminal device selects a first cell with the best measurement result from the first cells satisfying the first event as the target cell and reselects to the first cell at the third time, or the terminal device sorts the first cells satisfying the first event according to the R criterion, and selects the first cell with the highest ranking at the first time as the target cell and reselects to the first cell at the third time.

[0161] In some embodiments, the second time length can be defined separately for different scenarios, for example, the second time length corresponding to the scenario where the threshServingLowQ parameter is configured and the scenario where the threshServingLowQ parameter is not configured can be defined separately using different parameters. In some embodiments, the second time length can be uniformly defined for different scenarios, for example, the second time length corresponding to the scenario where the threshServingLowQ parameter is configured and the scenario where the threshServingLowQ parameter is not configured can be defined using one parameter (i.e., one parameter is shared by different scenarios). The other parameters mentioned below (such as the fourth threshold, the fifth threshold, the sixth threshold, the seventh threshold, the eighth threshold, and the ninth threshold) are similar, and will not be described again below.

[0162] The acquisition manner of the second time length will be introduced below, which is not described here.

[0163] It should be noted that the third moment is obtained by pushing the first moment backward by the second time length, but the embodiments of the present application are not limited thereto. For example, the third moment can be obtained by pushing the fourth moment forward by the second time length.

[0164] In some embodiments, the preset behavior can include: reaching the fourth moment, the terminal device determines the first cell as the target cell and reselects to the first cell. Wherein, the measurement result of the serving cell at the fourth moment meets the cell camping criterion. The related introduction of the fourth moment can be referred to the above, which is not described here. If the first event is that the terminal device predicts that the measurement result of the first cell at the second moment after the first time length meets the cell reselection condition; or the terminal device predicts that the measurement result of the first cell at the second moment after the first time length meets the cell reselection condition and the terminal device predicts that the measurement result of the serving cell at the second moment does not meet the cell camping criterion at the first moment, the first cell here refers to the earliest cell meeting the corresponding cell reselection condition predicted by the terminal device at the first moment. For the cells with the same frequency point priority, if the number of the first cells meeting the first event at the first moment is more than one, the terminal device selects one of the first cells as the target cell and reselects to the first cell at the fourth moment, or the terminal device sorts the first cells meeting the first event according to the R criterion, and selects the first cell with the highest ranking at the first moment as the target cell and reselects to the first cell at the fourth moment. If the first event is that the terminal device predicts that the measurement result of the serving cell at the fourth moment after the first time length meets the cell camping criterion, and the terminal device predicts that the measurement result of the first cell at the fourth moment does not meet the cell reselection condition at the first moment, for the cells with the same frequency point priority, the terminal device selects a first cell with the best measurement result from the first cells meeting the first event as the target cell and reselects to the first cell at the fourth moment, or the terminal device sorts the first cells meeting the first event according to the R criterion, and selects the first cell with the highest ranking at the first moment as the target cell and reselects to the first cell at the fourth moment.

[0165] In some embodiments, the preset behavior can include: at a sixth time, the terminal device determines the first cell as the target cell and reselects to the first cell. Wherein, at the sixth time, the second condition is satisfied.

[0166] In some embodiments, the preset behavior can include: at a sixth time, the terminal device determines the first cell as the target cell and reselects to the first cell. Wherein, at the sixth time, the second condition is satisfied.

[0167] In some embodiments, the second condition is related to one or more of the following: the measurement result of the first cell, the measurement result of the serving cell, the ranking of the first cell.

[0168] In some embodiments, the second condition is different in different scenarios. The second condition used in different scenarios is introduced as follows.

[0169] In some embodiments, if the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the second condition can be that the measurement result of the first cell is greater than the first threshold.

[0170] In some embodiments, if the frequency point priority of the first cell is equal to the frequency point priority of the serving cell, the second condition can be that the ranking of the first cell is highest according to the first criterion.

[0171] In some embodiments, if the frequency point priority of the first cell is lower than the frequency point priority of the serving cell, the second condition can be the first condition, that is, the second condition can be that the measurement result of the first cell is greater than the second threshold and the measurement result of the serving cell is less than the third threshold.

[0172] It can be seen that the second condition above is related to the cell reselection condition. That is, the terminal device can determine the time of reselecting to the first cell based on the cell reselection condition. If the second condition is met at the first time, the sixth time is equal to the first time, and at the first time, the terminal device determines that the first cell meeting the second condition is the target cell and reselects to the first cell; if the second condition is not met at the first time, the sixth time is a future time of the first time, and in this scenario, the terminal device needs to wait until the time (i.e., the sixth time) when the second condition is met to determine that the first cell meeting the second condition is the target cell and reselects to the first cell. For cells with the same frequency point priority, if the number of cells meeting the second condition at the sixth time is greater than 1, the terminal device selects the cell with the best measurement result, or selects the cell with the highest ranking according to the R criterion, or randomly selects one cell as the target cell and reselects to the first cell.

[0173] The acquisition method of each threshold value involved in the second condition will be described below, which is not described here.

[0174] In some embodiments, the preset behavior above can include: reaching the seventh time, the terminal device determines that the first cell is the target cell and reselects to the first cell. Wherein, the measurement result of the serving cell at the seventh time is less than the fifth threshold. That is, the terminal device can determine the time of reselecting to the first cell based on the measurement result (i.e., the absolute measurement result) of the serving cell. The acquisition method of the fifth threshold will be described below, which is not described here. If the measurement result of the serving cell at the first time is less than the fifth threshold, the seventh time is equal to the first time, and at the first time, the terminal device determines that the first cell is the target cell and reselects to the first cell; if the measurement result of the serving cell at the first time is greater than or equal to the fifth threshold, the seventh time is a future time of the first time, and in this scenario, the terminal device needs to wait until the time (i.e., the seventh time) when the measurement result of the serving cell is less than the fifth threshold to determine that the first cell is the target cell and reselects to the first cell. For cells with the same frequency point priority, if the number of first cells being evaluated at the seventh time is greater than 1, the terminal device selects the cell with the best measurement result, or selects the cell with the highest ranking according to the R criterion, or randomly selects one cell as the target cell and reselects to the first cell.

[0175] In some embodiments, the preset behavior can include: reaching the eighth moment, the terminal device determines the first cell as the target cell and reselects to the first cell. Wherein, at the eighth moment, the measurement result of the first cell is greater than the sixth threshold value and the measurement result of the serving cell is less than the seventh threshold value. That is, the terminal device can determine the time of reselecting to the first cell based on the measurement result of the first cell and the measurement result of the serving cell together. If at the first moment, the measurement result of the first cell is greater than the sixth threshold value and the measurement result of the serving cell is less than the seventh threshold value, the eighth moment is equal to the first moment, and at the first moment, the terminal device determines that the first cell whose measurement result is greater than the sixth threshold value as the target cell and reselects to the first cell; if at the first moment, the measurement result of the first cell is less than or equal to the sixth threshold value or the measurement result of the serving cell is greater than or equal to the seventh threshold value, the eighth moment is a future moment of the first moment, and in this scenario, the terminal device needs to wait until the moment (i.e. the eighth moment) when the measurement result of the first cell is greater than the sixth threshold value and the measurement result of the serving cell is less than the seventh threshold value to determine the first cell whose measurement result is greater than the sixth threshold value as the target cell and reselect to the first cell. For the cells with the same frequency priority, if the number of cells whose measurement result is greater than the sixth threshold value at the eighth moment is greater than 1, the terminal device selects the cell with the best measurement result or the cell with the highest ranking according to the R criterion or randomly selects one cell as the target cell and reselects to the first cell.

[0176] The acquisition method of the sixth threshold value and / or the seventh threshold value will be introduced below, which is not described in detail here.

[0177] In some embodiments, the preset behavior can include: reaching the ninth moment, the terminal device determines the first cell as the target cell and reselects to the first cell. Wherein, at the ninth moment, the third condition is met.

[0178] In some embodiments, the third condition can consider the measurement result of the serving cell on the basis of considering the above-mentioned second condition. That is, the terminal device can determine the time of reselecting to the first cell based on the cell reselection condition and the measurement result of the serving cell.

[0179] In some embodiments, the third condition is related to one or more of the following: the measurement result of the first cell, the measurement result of the serving cell, and the ranking of the first cell.

[0180] In some embodiments, the third condition is different for different scenarios. The third conditions used in different scenarios are introduced below.

[0181] In some embodiments, if the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the third condition can be that the measurement result of the first cell is greater than the first threshold and the measurement result of the serving cell is less than the eighth threshold. If at the first time, the measurement result of the first cell is greater than the first threshold and the measurement result of the serving cell is less than the eighth threshold, the ninth time is equal to the first time, and at the first time, the terminal device determines that the first cell whose measurement result is greater than the first threshold is the target cell and reselects to the first cell; if at the first time, the measurement result of the first cell is less than or equal to the first threshold or the measurement result of the serving cell is greater than or equal to the eighth threshold, the ninth time is a future time of the first time, and in this scenario, the terminal device needs to wait until the time (i.e. the ninth time) when the measurement result of the first cell is greater than the first threshold and the measurement result of the serving cell is less than the eighth threshold to determine that the first cell whose measurement result is greater than the first threshold is the target cell and reselect to the first cell. For the cells with the same frequency point priority, if the number of the cells whose measurement result is greater than the first threshold at the ninth time is greater than 1, the terminal device selects the cell with the best measurement result, or selects the cell with the highest ranking according to the R criterion, or selects one cell at random as the target cell and reselects to the first cell.

[0182] In some embodiments, if the frequency point priority of the first cell is equal to the frequency point priority of the serving cell, the third condition can be that the first cell is determined to have the highest ranking according to the first criterion and the measurement result of the serving cell is less than the ninth threshold. If at the first time, the first cell has the highest ranking and the measurement result of the serving cell is less than the ninth threshold, the ninth time is equal to the first time, and at the first time, the terminal device determines that the first cell with the highest ranking is the target cell and reselects to the first cell; if at the first time, the measurement result of the serving cell is greater than or equal to the ninth threshold, the ninth time is a future time of the first time, and in this scenario, the terminal device needs to wait until the time (i.e. the ninth time) when the measurement result of the serving cell is less than the ninth threshold to determine that the first cell with the highest ranking is the target cell and reselect to the first cell.

[0183] The acquisition method of each threshold related to the third condition will be described below, which is not described here in detail.

[0184] In some embodiments, the preset behavior can include: at the tenth time point, the terminal device determines the first cell as the target cell and reselects to the first cell. The tenth time point is any time point between the first time point and the fourth time point. That is, at any time point between the first time point and the fourth time point, the terminal device can determine when to determine the first cell as the target cell and reselect to the first cell based on the implementation. If the first event is that at the first time point, the terminal device predicts that the measurement result of the first cell at the second time point after the first time length just meets the cell reselection condition; or at the first time point, the terminal device predicts that the measurement result of the first cell at the second time point after the first time length just meets the cell reselection condition and at the first time point, the terminal device predicts that the measurement result of the serving cell of the terminal device at the second time point does not meet the cell camping criterion, the first cell here refers to the cell that meets the corresponding cell reselection condition earliest at the first time point. For cells with the same frequency point priority, if the number of the first cells meeting the first event at the first time point is more than one, the terminal device randomly selects one of the first cells meeting the first event as the target cell and reselects to the first cell at the tenth time point, or the terminal device sorts the first cells meeting the first event according to the R criterion, and selects the first cell with the highest ranking at the first time point as the target cell and reselects to the first cell at the tenth time point. If the first event is that at the first time point, the terminal device predicts that the measurement result of the serving cell at the fourth time point after the first time length meets the cell camping criterion, and at the first time point, the terminal device predicts that the measurement result of the first cell at the fourth time point does not meet the cell reselection condition, for cells with the same frequency point priority, the terminal device selects a first cell with the best measurement result from the first cells meeting the first event at the first time point as the target cell and reselects to the first cell at the tenth time point, or the terminal device sorts the first cells meeting the first event according to the R criterion, and selects the first cell with the highest ranking at the first time point as the target cell and reselects to the first cell at the tenth time point.

[0185] It should be noted that the application embodiments do not limit the order between the third time point, the fifth time point, the sixth time point, the seventh time point, the eighth time point, the ninth time point and the tenth time point, as long as they are between the first time point and the fourth time point. For example, the third time point can be before the fifth time point, can be after the fifth time point, or can be the same time point as the fifth time point. For another example, the third time point can be before the sixth time point, can be after the sixth time point, or can be the same time point as the sixth time point. Other cases are similar and will not be described here.

[0186] In some embodiments, the fourth condition is related to a time length that the terminal device stays in the serving cell.

[0187] In some embodiments, the fourth condition can include that the time length that the terminal device stays in the serving cell exceeds a third time length. The third time length is used to indicate a minimum time length that the terminal device needs to stay in the serving cell. The embodiments of the present application do not limit the value of the third time length. For example, the third time length can be 1 second, 3 seconds, etc. The embodiments of the present application do not limit the obtaining manner of the third time length. For example, the third time length can be predefined or preconfigured, or the third time length can be configured by the network device.

[0188] The above-mentioned various parameters (such as the second time length, the fourth threshold, etc.) are introduced below.

[0189] As an implementation manner, the above-mentioned various parameters can be configured by the network device.

[0190] Referring back to FIG. 2, in some embodiments, the method shown in FIG. 2 can further include step S212 and / or step S214. As an example, the method shown in FIG. 2 can further include step S214. As another example, the method shown in FIG. 2 can further include step S212. As yet another example, the method shown in FIG. 2 can further include step S212 and step S214.

[0191] In step S212, the terminal device receives the first configuration information sent by the network device, and correspondingly, the network device sends the first configuration information to the terminal device.

[0192] In some embodiments, the first configuration information is related to the behavior of the terminal device triggering cell reselection before the cell reselection condition is met.

[0193] In some embodiments, the first configuration information can include a first parameter. The first parameter can be used to indicate the value of the second time length.

[0194] In some embodiments, the first configuration information can include a second parameter. The second parameter can be used to indicate the value of the fourth threshold.

[0195] In some embodiments, the first configuration information can include a third parameter. The third parameter can be used to indicate the value of the fifth threshold.

[0196] In some embodiments, the first configuration information can include a fourth parameter and a fifth parameter. The fourth parameter can be used to indicate the value of the sixth threshold. The fifth parameter can be used to indicate the value of the seventh threshold.

[0197] In some embodiments, the first configuration information can comprise a sixth parameter. The sixth parameter can be used to indicate a value of the eighth threshold.

[0198] In some embodiments, the first configuration information can comprise a seventh parameter. The seventh parameter can be used to indicate a value of the ninth threshold.

[0199] In step S214, the terminal device receives the second configuration information sent by the network device. Accordingly, the network device sends the second configuration information to the terminal device.

[0200] In some embodiments, the second configuration information is related to the first event or the second configuration information is related to the behavior of the terminal device triggering cell reselection before the cell reselection condition is met.

[0201] In some embodiments, the second configuration information can comprise an eighth parameter. The eighth parameter can be used to indicate a value of the first time length.

[0202] As an example, the network device can send the second configuration information to the terminal device to configure the eighth parameter.

[0203] As another example, the network device can send the second configuration information and the first configuration information to the terminal device to configure the eighth parameter and the first parameter. It should be noted that if the second time length is defined using multiple parameters (for example, the second time length is separately defined in the scenario where the threshServingLowQ parameter is configured and the scenario where the threshServingLowQ parameter is not configured), the network device can configure these multiple parameters to the terminal device respectively. The other parameters are similar, and the embodiments of the present application will not be described here.

[0204] As another example, the network device can send the second configuration information and the first configuration information to the terminal device to configure the eighth parameter and the second parameter.

[0205] As another example, the network device can send the second configuration information and the first configuration information to the terminal device to configure the eighth parameter and the third parameter.

[0206] As another example, the network device can send the second configuration information and the first configuration information to the terminal device to configure the eighth parameter, the fourth parameter, and the fifth parameter.

[0207] As another example, the network device can send the second configuration information and the first configuration information to the terminal device to configure the eighth parameter and the sixth parameter.

[0208] As another example, the network device can send the second configuration information and the first configuration information to the terminal device to configure the eighth parameter and the seventh parameter.

[0209] As a further example, the network device can send the terminal device the second configuration information and the first configuration information to configure the eighth parameter, the sixth parameter and the seventh parameter. It should be noted that the sixth parameter and the seventh parameter can be the same parameter or different parameters, and if the sixth parameter and the seventh parameter are the same parameter, as a further example, the network device can send the terminal device the second configuration information and the first configuration information to configure the eighth parameter and the sixth parameter.

[0210] In some embodiments, the first configuration information and the second configuration information can be different configuration information, or in other words, the first configuration information and the second configuration information are carried in different messages (for example, carried in different system broadcast messages). In some embodiments, the first configuration information and the second configuration information can be the same configuration information, or in other words, the first configuration information and the second configuration information can be carried in the same message (for example, carried in the same system broadcast message), and at this time, the terminal device receives the second configuration information sent by the network device or receives the first configuration information and the second configuration information sent by the network device through the same step, and accordingly, the network device sends the terminal device the second configuration information or sends the terminal device the first configuration information and the second configuration information.

[0211] In some embodiments, the first configuration information and / or the second configuration information can be carried in a system broadcast message of a serving cell.

[0212] As another implementation manner, the various parameters mentioned above can be predefined (such as protocol predefined) or preconfigured. For example, the first parameter to the eighth parameter above are predefined or preconfigured.

[0213] As a further implementation manner, part of the various parameters mentioned above can be configured by the network device, and another part of the parameters can be predefined or preconfigured. For example, the first parameter to the seventh parameter above are configured by the network device, and the eighth parameter is predefined or preconfigured. Or, the first parameter to the fifth parameter above are configured by the network device, and the sixth parameter to the eighth parameter are predefined or preconfigured.

[0214] In some embodiments, the network device can indicate to the terminal device whether the terminal device is allowed to trigger the cell reselection behavior before the cell reselection condition is met. As an implementation manner, the terminal device can receive the indication information sent by the network device. Accordingly, the network device can send the indication information to the terminal device. The indication information can be used to indicate whether the terminal device is allowed to trigger the cell reselection behavior before the cell reselection condition is met.

[0215] In some embodiments, in the case that the indication information indicates that the terminal device is allowed to trigger the cell reselection behavior before the cell reselection condition is met, the terminal device can perform the preset behavior in the case that the first event is met.

[0216] In some embodiments, the terminal device can send the capability information to the network device, and accordingly, the network device can receive the capability information sent by the terminal device. The capability information is used to indicate whether the terminal device supports the behavior of triggering the cell reselection before the cell reselection condition is met.

[0217] The method embodiments of the present application are described in detail above in combination with FIG. 1 to FIG. 3, and the device embodiments of the present application are described in detail below in combination with FIG. 4 to FIG. 6. It should be understood that the description of the method embodiments and the description of the device embodiments correspond to each other, and therefore, the parts not described in detail can be referred to the foregoing method embodiments.

[0218] FIG. 4 is a structural schematic diagram of a terminal device provided by an embodiment of the present application. The terminal device 400 shown in FIG. 4 includes an execution module 410. The execution module 410 can be used to perform a preset behavior in the case that a first event is met, wherein the first event is related to a cell reselection process, and the preset behavior includes a behavior of triggering cell reselection of the terminal device before a cell reselection condition is met.

[0219] In some embodiments, the first event includes: in a first time, the terminal device predicts that a measurement result of a first cell at a second time after a first time length just meets the cell reselection condition; or in a first time, the terminal device predicts that a measurement result of a first cell at a second time after a first time length just meets the cell reselection condition and in the first time, the terminal device predicts that a measurement result of a serving cell of the terminal device at the second time does not meet a cell camping criterion; or in a first time, the terminal device predicts that a measurement result of a serving cell at a fourth time after a first time length meets a cell camping criterion critically, and in the first time, the terminal device predicts that a measurement result of a first cell at the fourth time does not meet the cell reselection condition; wherein the first cell is a neighbor cell of the terminal device.

[0220] In some embodiments, in the case that the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the second time just meets the cell reselection condition is that the state corresponding to the duration that the measurement result of the first cell is greater than a first threshold value is equal to a first time length threshold value when the second time is reached.

[0221] In some embodiments, if the frequency priority of the first cell is equal to the frequency priority of the serving cell, the meaning that the measurement result of the first cell just meets the cell reselection condition at the second time is that, at the second time, the terminal device determines that the ranking of the first cell is the highest according to the first criterion, and the state that the ranking of the first cell is the highest corresponds to a duration equal to the first duration threshold.

[0222] In some embodiments, if the frequency priority of the first cell is lower than the frequency priority of the serving cell, the meaning that the measurement result of the first cell just meets the cell reselection condition at the second time is that, at the second time, a first condition is met and the state that the first condition is met corresponds to a duration equal to the first duration threshold, wherein the first condition is that the measurement result of the first cell is greater than a second threshold and the measurement result of the serving cell is less than a third threshold.

[0223] In some embodiments, the preset behavior includes any one of the following: at the first time, the terminal device determines the first cell as a target cell and reselects to the first cell; at a third time, the terminal device determines the first cell as a target cell and reselects to the first cell, the third time is a future time of the first time, and the time interval between the third time and the first time is a second duration; at the fourth time, the terminal device determines the first cell as a target cell and reselects to the first cell, and at the fourth time, the measurement result of the serving cell meets the cell camping criterion; at a fifth time, the terminal device determines the first cell as a target cell and reselects to the first cell, and at the fifth time, the measurement result of the first cell is greater than a fourth threshold; at a sixth time, the terminal device determines the first cell as a target cell and reselects to the first cell, and at the sixth time, a second condition is met; at a seventh time, the terminal device determines the first cell as a target cell and reselects to the first cell, and at the seventh time, the measurement result of the serving cell is less than a fifth threshold; at an eighth time, the terminal device determines the first cell as a target cell and reselects to the first cell, and at the eighth time, the measurement result of the first cell is greater than a sixth threshold and the measurement result of the serving cell is less than a seventh threshold; at a ninth time, the terminal device determines the first cell as a target cell and reselects to the first cell, and at the ninth time, a third condition is met; at a tenth time, the terminal device determines the first cell as a target cell and reselects to the first cell, and the tenth time is any time between the first time and the fourth time.

[0224] In some embodiments, if the frequency priority of the first cell is higher than the frequency priority of the serving cell, the second condition is that the measurement result of the first cell is greater than a first threshold.

[0225] In some embodiments, if the frequency priority of the first cell is equal to the frequency priority of the serving cell, the second condition is that the first cell is determined to be highest in ranking according to a first criterion.

[0226] In some embodiments, if the frequency priority of the first cell is lower than the frequency priority of the serving cell, the second condition is that the measurement result of the first cell is greater than a second threshold and the measurement result of the serving cell is less than a third threshold.

[0227] In some embodiments, if the frequency priority of the first cell is higher than the frequency priority of the serving cell, the third condition is that the measurement result of the first cell is greater than a first threshold and the measurement result of the serving cell is less than an eighth threshold.

[0228] In some embodiments, if the frequency priority of the first cell is equal to the frequency priority of the serving cell, the third condition is that the first cell is determined to be highest in ranking according to a first criterion and the measurement result of the serving cell is less than a ninth threshold.

[0229] In some embodiments, the terminal device further includes a first receiving module 420, configured to receive first configuration information sent by a network device, the first configuration information being related to a behavior of the terminal device triggering cell reselection before a cell reselection condition is met, and the first configuration information including any one of the following: a first parameter used to indicate a value of the second time length; or a second parameter used to indicate a value of the fourth threshold; or a third parameter used to indicate a value of the fifth threshold; or a fourth parameter used to indicate a value of the sixth threshold and a fifth parameter used to indicate a value of the seventh threshold; or a sixth parameter used to indicate a value of an eighth threshold; or a seventh parameter used to indicate a value of a ninth threshold; or a sixth parameter used to indicate a value of an eighth threshold and a seventh parameter used to indicate a value of a ninth threshold.

[0230] In some embodiments, the terminal device further includes a second receiving module, configured to receive second configuration information sent by a network device, the second configuration information being related to the first event, and the second configuration information including an eighth parameter used to indicate a value of the first time length.

[0231] In some embodiments, the behavior of triggering cell reselection before the cell reselection condition is met by the terminal device further comprises satisfying a fourth condition, the fourth condition being that a length of time that the terminal device camps on the serving cell exceeds a third length of time; wherein the third length of time is used to indicate a minimum length of time that the terminal device needs to camp on a serving cell.

[0232] In some embodiments, the speed state of the terminal device comprises one or more of: a normal speed state, a medium speed state, and a high speed state, and the terminal device further comprises a scaling module configured to scale the first length of time threshold if the speed state of the terminal device is the medium speed state or the high speed state.

[0233] In some embodiments, the terminal device further comprises a third receiving module configured to receive indication information sent by the network device, the indication information being used to indicate whether the behavior of triggering cell reselection before the cell reselection condition is met is allowed.

[0234] In some embodiments, the terminal device further comprises a sending module configured to send capability information to the network device, the capability information being used to indicate whether the terminal device supports the behavior of triggering cell reselection before the cell reselection condition is met.

[0235] In some embodiments, the execution module 410 can be a processor 610. The terminal device 400 can further include a transceiver 630 and a memory 620, as shown in FIG. 6.

[0236] FIG. 5 is a structural diagram of a network device according to an embodiment of the present application. The network device 500 shown in FIG. 5 includes a first sending module 510. The first sending module 510 is configured to send second configuration information to a terminal device, the second configuration information being related to a first event, the second configuration information including an eighth parameter, the eighth parameter being used to indicate a value of a first length of time, the first length of time being used to indicate a length of a time window in which the terminal device predicts a measurement result of a cell; wherein the first event includes: predicting at a first time that a measurement result of a first cell at a second time after the first length of time just meets a cell reselection condition; or predicting at the first time that the measurement result of the first cell at the second time after the first length of time just meets the cell reselection condition and predicting at the first time that a measurement result of a serving cell of the terminal device at the second time does not meet a cell camping criterion; or predicting at the first time that a measurement result of a serving cell at a fourth time after the first length of time meets a cell camping criterion and predicting at the first time that the measurement result of the first cell at the fourth time does not meet the cell reselection condition; the first cell being a neighbor cell of the terminal device.

[0237] In some embodiments, the network device further includes a second sending module 520, configured to send first configuration information to the terminal device, the first configuration information being related to the behavior of the terminal device triggering cell reselection before a cell reselection condition is met, and the first configuration information including any one of the following: a first parameter used to indicate a value of a second time length; or a second parameter used to indicate a value of a fourth threshold; or a third parameter used to indicate a value of a fifth threshold; or a fourth parameter used to indicate a value of a sixth threshold and a fifth parameter used to indicate a value of a seventh threshold; or a sixth parameter used to indicate a value of an eighth threshold; or a seventh parameter used to indicate a value of a ninth threshold; or a sixth parameter used to indicate a value of an eighth threshold and a seventh parameter used to indicate a value of a ninth threshold.

[0238] In some embodiments, the network device further includes a third sending module, configured to send indication information to the terminal device, the indication information being used to indicate whether the terminal device is allowed to trigger the behavior of cell reselection before the cell reselection condition is met.

[0239] In some embodiments, the network device further includes a receiving module, configured to receive capability information sent by the terminal device, the capability information being used to indicate whether the terminal device supports the behavior of triggering cell reselection before the cell reselection condition is met.

[0240] In some embodiments, the first sending module 410 can be a transceiver 630. The network device 500 can further include a processor 610 and a memory 620, as shown in FIG. 6.

[0241] FIG. 6 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application. The dashed line in FIG. 6 indicates that the unit or module is optional. The apparatus 600 can be used to implement the method described in the above method embodiments. The apparatus 600 can be a chip, a terminal device or a network device.

[0242] The apparatus 600 can include one or more processors 610. The processor 610 can support the apparatus 600 to implement the methods described in the foregoing method embodiments. The processor 610 can be a general purpose processor or a dedicated processor. For example, the processor can be a central processing unit (CPU). Alternatively, the processor can also be other general purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, etc. The general purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0243] The apparatus 600 can also include one or more memories 620. The memory 620 stores a program that can be executed by the processor 610, so that the processor 610 executes the methods described in the foregoing method embodiments. The memory 620 can be independent of the processor 610 or integrated in the processor 610.

[0244] The apparatus 600 can also include a transceiver 630. The processor 610 can communicate with other devices or chips through the transceiver 630. For example, the processor 610 can perform data transceiving with other devices or chips through the transceiver 630.

[0245] The embodiments of the present application also provide a computer readable storage medium for storing a program. The computer readable storage medium can be applied to the terminal device or the network device provided by the embodiments of the present application, and the program causes the computer to execute the method performed by the terminal device or the network device in the embodiments of the present application.

[0246] The embodiments of the present application also provide a computer program product. The computer program product includes a program. The computer program product can be applied to the terminal device or the network device provided by the embodiments of the present application, and the program causes the computer to execute the method performed by the terminal device or the network device in the embodiments of the present application.

[0247] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal device or the network device provided by the embodiments of the present application, and the computer program causes the computer to execute the method performed by the terminal device or the network device in the embodiments of the present application.

[0248] It should be understood that the terms "system" and "network" can be used interchangeably in this application. In addition, the terms used in this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The terms "first", "second", "third", and "fourth" and the like in the specification and claims of this application and the drawings are used to distinguish different objects, and are not used to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0249] In embodiments of this application, the term "indicate" can be direct indication, or indirect indication, or can represent an associated relationship. For example, A indicates B, which can mean that B can be obtained by A; or A indirectly indicates B, for example, A indicates C, and B can be obtained by C; or A and B have an associated relationship.

[0250] In embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0251] In embodiments of this application, the term "corresponding" can represent a direct or indirect corresponding relationship between the two, or can represent an associated relationship between the two, or can represent an indication and being indicated, configuration and being configured, etc.

[0252] In embodiments of this application, the term "include" can mean direct inclusion, or indirect inclusion. Alternatively, the term "include" mentioned in embodiments of this application can be replaced by "indicate" or "used to determine". For example, A includes B can be replaced by A indicates B, or A is used to determine B.

[0253] In embodiments of this application, "predefined" or "preconfigured" can be achieved by pre-saving corresponding codes, tables or other means for indicating related information in devices (such as terminal devices and network devices), and this application does not limit the specific implementation manner. For example, predefinition can mean definition in a protocol.

[0254] In embodiments of this application, the "protocol" can refer to a standard protocol in the communication field, which can include LTE protocol, NR protocol and related protocols applied to future communication systems, and this application does not limit this.

[0255] The term "and / or" used in the embodiments of the present application only describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the front and rear associated objects.

[0256] In various embodiments of the present application, the size of the sequence number of each process described above does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0257] In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented by other ways. For example, the device embodiments described above are only schematic, and the division of the units is only a logical function division, and there can be another division way in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0258] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiments of the present application.

[0259] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0260] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server, data center and the like integrated with one or more available media sets. The available media can be magnetic media (for example, floppy disk, hard disk, magnetic tape), optical media (for example, digital video disc (DVD)) or semiconductor media (for example, solid state disk (SSD)) and the like.

[0261] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for wireless communication, comprising: Comprise: If the first event is met, the terminal device performs a preset behavior, wherein the first event is related to a cell reselection process, and the preset behavior includes a behavior of triggering cell reselection before a cell reselection condition is met.

2. The method of claim 1, wherein, The first event includes: At a first time, the terminal device predicts that a measurement result of a first cell at a second time after a first time length just meets the cell reselection condition; or At a first time, the terminal device predicts that a measurement result of a first cell at a second time after a first time length just meets the cell reselection condition and at the first time, the terminal device predicts that a measurement result of a serving cell of the terminal device at the second time does not meet a cell residence criterion; or At a first time, the terminal device predicts that a measurement result of a serving cell at a fourth time after a first time length just meets a cell residence criterion, and at the first time, the terminal device predicts that a measurement result of a first cell at the fourth time does not meet the cell reselection condition; Wherein, the first cell is a neighbor cell of the terminal device.

3. The method of claim 2, wherein, If the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the second time just meets the cell reselection condition is that when the second time is reached, the duration corresponding to the state that the measurement result of the first cell is greater than a first threshold value is equal to a first time length threshold value.

4. The method according to claim 2 or 3, characterized in that, If the frequency point priority of the first cell is equal to the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the second time just meets the cell reselection condition is that when the second time is reached, the terminal device determines that the ranking of the first cell is the highest according to a first criterion, and the duration corresponding to the state that the ranking of the first cell is the highest is equal to a first time length threshold value.

5. The method according to any one of claims 2-4, characterized in that, If the frequency point priority of the first cell is lower than the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the second time just meets the cell reselection condition is that when the second time is reached, a first condition is met and the duration corresponding to the state that the first condition is met is equal to a first time length threshold value, wherein the first condition is that the measurement result of the first cell is greater than a second threshold value and the measurement result of the serving cell is less than a third threshold value.

6. The method according to any one of claims 2-5, characterized in that, The preset behavior includes any one of the following: At the first time, the terminal device determines the first cell as a target cell and reselects to the first cell; When a third time is reached, the terminal device determines the first cell as a target cell and reselects to the first cell, the third time is a future time of the first time, and the time interval between the third time and the first time is a second time length; When the fourth time is reached, the terminal device determines the first cell as a target cell and reselects to the first cell, and at the fourth time, the measurement result of the serving cell just meets the cell residence criterion; When a fifth time is reached, the terminal device determines the first cell as a target cell and reselects to the first cell, and at the fifth time, the measurement result of the first cell is greater than a fourth threshold value; arriving at the sixth moment, the terminal device determines the first cell as a target cell and reselects to the first cell, and a second condition is met at the sixth moment; arriving at the seventh moment, the terminal device determines the first cell as a target cell and reselects to the first cell, and a measurement result of the serving cell is less than a fifth threshold at the seventh moment; arriving at the eighth moment, the terminal device determines the first cell as a target cell and reselects to the first cell, and a measurement result of the first cell is greater than a sixth threshold and a measurement result of the serving cell is less than a seventh threshold at the eighth moment; arriving at the ninth moment, the terminal device determines the first cell as a target cell and reselects to the first cell, and a third condition is met at the ninth moment; arriving at the tenth moment, the terminal device determines the first cell as a target cell and reselects to the first cell, and the tenth moment is any moment between the first moment and the fourth moment.

7. The method of claim 6, wherein, If the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the second condition is that a measurement result of the first cell is greater than a first threshold.

8. The method according to claim 6 or 7, characterized in that, If the frequency point priority of the first cell is equal to the frequency point priority of the serving cell, the second condition is that the first cell is determined to have a highest rank according to a first criterion.

9. The method according to any one of claims 6-8, characterized in that, If the frequency point priority of the first cell is lower than the frequency point priority of the serving cell, the second condition is that the measurement result of the first cell is greater than a second threshold and the measurement result of the serving cell is less than a third threshold.

10. The method of claim 6, wherein, If the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the third condition is that the measurement result of the first cell is greater than the first threshold and the measurement result of the serving cell is less than an eighth threshold.

11. The method according to claim 6 or 10, characterized in that, If the frequency point priority of the first cell is equal to the frequency point priority of the serving cell, the third condition is that the first cell is determined to have the highest rank according to the first criterion and the measurement result of the serving cell is less than a ninth threshold.

12. The method according to claim 6 or 10 or 11, characterized in that, The method further comprises: The terminal device receives first configuration information sent by a network device, the first configuration information being related to a behavior of triggering cell reselection of the terminal device before a cell reselection condition is met, and the first configuration information comprising any one of the following: a first parameter used to indicate a value of the second time length; or a second parameter used to indicate a value of the fourth threshold; or a third parameter used to indicate a value of the fifth threshold; or a fourth parameter used to indicate a value of the sixth threshold and a fifth parameter used to indicate a value of the seventh threshold; or a sixth parameter used to indicate a value of an eighth threshold; or a seventh parameter used to indicate a value of a ninth threshold; or the sixth parameter used to indicate the value of the eighth threshold and the seventh parameter used to indicate the value of the ninth threshold.

13. The method according to any one of claims 2-12, characterized in that, The method further comprises: The terminal device receives second configuration information sent by the network device, the second configuration information being related to the first event, the second configuration information including an eighth parameter, and the eighth parameter being used to indicate a value of the first time length.

14. The method of any one of claims 1-13, wherein, The behavior of triggering cell reselection before a cell reselection condition is met by the terminal device further includes satisfying a fourth condition, and the fourth condition is that a length of time that the terminal device stays in the serving cell exceeds a third time length; and the third time length is used to indicate a minimum length of time that the terminal device needs to stay in the serving cell.

15. The method of any one of claims 1-14, wherein, The speed state of the terminal device includes one or more of the following: a normal speed state, a medium speed state, and a high speed state, and the method further includes: If the speed state of the terminal device is the medium speed state or the high speed state, the terminal device scales the first time length threshold.

16. The method of any one of claims 1-15, wherein, The method further includes: The terminal device receives indication information sent by the network device, and the indication information is used to indicate whether the behavior of triggering cell reselection before a cell reselection condition is met by the terminal device is allowed.

17. A method for wireless communication, comprising: The method further includes: The network device sends second configuration information to the terminal device, the second configuration information being related to the first event, the second configuration information including an eighth parameter, and the eighth parameter being used to indicate a value of the first time length, and the first time length being used to indicate a length of a time window in which the terminal device predicts a cell measurement result; The first event includes: The measurement result of the first cell at a second time after the first time length is predicted to just meet a cell reselection condition; or The measurement result of the first cell at a second time after the first time length is predicted to just meet a cell reselection condition, and the measurement result of the serving cell of the terminal device at the first time predicted to the second time does not meet a cell stay criterion; or The measurement result of the serving cell at a fourth time after the first time length is predicted to just meet a cell stay criterion, and the measurement result of the first cell at the first time predicted to the fourth time does not meet a cell reselection condition; The first cell is a neighboring cell of the terminal device.

18. The method of claim 17, wherein, The method further includes: The network device sends first configuration information to the terminal device, the first configuration information being related to the behavior of triggering cell reselection before a cell reselection condition is met by the terminal device, and the first configuration information including any one of the following: A first parameter, the first parameter being used to indicate a value of a second time length; or A second parameter, the second parameter being used to indicate a value of a fourth threshold; or A third parameter, the third parameter being used to indicate a value of a fifth threshold; or A fourth parameter and a fifth parameter, the fourth parameter being used to indicate a value of a sixth threshold, and the fifth parameter being used to indicate a value of a seventh threshold; or A sixth parameter, the sixth parameter being used to indicate a value of an eighth threshold; or A seventh parameter, the seventh parameter being used to indicate a value of a ninth threshold; or A sixth parameter and a seventh parameter, the sixth parameter being used to indicate a value of an eighth threshold, and the seventh parameter being used to indicate a value of a ninth threshold.

19. The method of claim 17 or 18, wherein, The method further includes: The network device sends indication information to the terminal device, and the indication information is used to indicate whether the terminal device is allowed to trigger a cell reselection behavior before a cell reselection condition is met.

20. A terminal device, comprising: Comprise: The execution module is used for executing a preset behavior if a first event is met, wherein the first event is related to a cell reselection process, and the preset behavior comprises a behavior of triggering a cell reselection before a cell reselection condition is met.

21. The terminal device of claim 20, wherein, The first event comprises: At a first time, the terminal device predicts that a measurement result of a first cell at a second time after a first time length just meets the cell reselection condition; or At a first time, the terminal device predicts that a measurement result of a first cell at a second time after a first time length just meets the cell reselection condition and that, at the first time, the terminal device predicts that a measurement result of a serving cell of the terminal device at the second time does not meet a cell camping criterion; or At a first time, the terminal device predicts that a measurement result of a serving cell at a fourth time after a first time length just meets a cell camping criterion, and that, at the first time, the terminal device predicts that a measurement result of a first cell at the fourth time does not meet the cell reselection condition; Wherein, the first cell is a neighbor cell of the terminal device.

22. The terminal device of claim 21, wherein, If the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the second time just meets the cell reselection condition is that, when the second time is reached, the duration corresponding to the state in which the measurement result of the first cell is greater than a first threshold value is equal to a first time length threshold value.

23. The terminal device according to claim 21 or 22, characterized by, If the frequency point priority of the first cell is equal to the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the second time just meets the cell reselection condition is that, when the second time is reached, the terminal device determines that the ranking of the first cell is the highest according to a first criterion, and the duration corresponding to the state in which the ranking of the first cell is the highest is equal to a first time length threshold value.

24. The terminal device of any one of claims 21-23, wherein, If the frequency point priority of the first cell is lower than the frequency point priority of the serving cell, the meaning that the measurement result of the first cell at the second time just meets the cell reselection condition is that, when the second time is reached, a first condition is met and the duration corresponding to the state in which the first condition is met is equal to a first time length threshold value, wherein the first condition is that the measurement result of the first cell is greater than a second threshold value and the measurement result of the serving cell is less than a third threshold value.

25. The terminal device of any one of claims 21-24, wherein, The preset behavior comprises any one of the following: At the first time, the terminal device determines the first cell as a target cell and reselects to the first cell; When a third time is reached, the terminal device determines the first cell as a target cell and reselects to the first cell, the third time is a future time of the first time, and the time interval between the third time and the first time is a second time length; When the fourth time is reached, the terminal device determines the first cell as a target cell and reselects to the first cell, and the measurement result of the serving cell at the fourth time just meets the cell camping criterion; arriving at the fifth moment, the terminal device determines the first cell as a target cell and reselects to the first cell, and a measurement result of the first cell at the fifth moment is greater than a fourth threshold value; arriving at the sixth moment, the terminal device determines the first cell as a target cell and reselects to the first cell, and a second condition is met at the sixth moment; arriving at the seventh moment, the terminal device determines the first cell as a target cell and reselects to the first cell, and a measurement result of the serving cell at the seventh moment is less than a fifth threshold value; arriving at the eighth moment, the terminal device determines the first cell as a target cell and reselects to the first cell, and a measurement result of the first cell at the eighth moment is greater than a sixth threshold value and a measurement result of the serving cell is less than a seventh threshold value; arriving at the ninth moment, the terminal device determines the first cell as a target cell and reselects to the first cell, and a third condition is met at the ninth moment; arriving at the tenth moment, the terminal device determines the first cell as a target cell and reselects to the first cell, and the tenth moment is any moment between the first moment and the fourth moment.

26. The terminal device of claim 25, wherein, If the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the second condition is that the measurement result of the first cell is greater than a first threshold value.

27. The terminal device according to claim 25 or 26, characterized by If the frequency point priority of the first cell is equal to the frequency point priority of the serving cell, the second condition is that the first cell is determined to have the highest rank according to a first criterion.

28. The terminal device of any one of claims 25-27, wherein, If the frequency point priority of the first cell is lower than the frequency point priority of the serving cell, the second condition is that the measurement result of the first cell is greater than a second threshold value and the measurement result of the serving cell is less than a third threshold value.

29. The terminal device of claim 25, wherein, If the frequency point priority of the first cell is higher than the frequency point priority of the serving cell, the third condition is that the measurement result of the first cell is greater than a first threshold value and the measurement result of the serving cell is less than an eighth threshold value.

30. The terminal device according to claim 25 or 29, characterized by If the frequency point priority of the first cell is equal to the frequency point priority of the serving cell, the third condition is that the first cell is determined to have the highest rank according to a first criterion and the measurement result of the serving cell is less than a ninth threshold value.

31. The terminal device according to claim 25 or 29 or 30, characterized by, The terminal device further comprises: a first receiving module, configured to receive first configuration information sent by a network device, the first configuration information being related to a behavior of the terminal device triggering cell reselection before a cell reselection condition is met, and the first configuration information comprising any one of the following: a first parameter, used to indicate a value of the second time length; or a second parameter, used to indicate a value of the fourth threshold value; or a third parameter, used to indicate a value of the fifth threshold value; or a fourth parameter and a fifth parameter, the fourth parameter being used to indicate a value of the sixth threshold value and the fifth parameter being used to indicate a value of the seventh threshold value; or a sixth parameter, used to indicate a value of an eighth threshold value; or a seventh parameter, used to indicate a value of a ninth threshold value; or a seventh parameter, used to indicate a value of a ninth threshold value; or The sixth parameter is used to indicate a value of an eighth threshold, and the seventh parameter is used to indicate a value of a ninth threshold.

32. The terminal device of any one of claims 21-31, wherein, The terminal device further includes: The second receiving module is configured to receive second configuration information sent by the network device, the second configuration information being related to the first event, and the second configuration information including an eighth parameter used to indicate a value of the first time length.

33. The terminal device of any one of claims 20-32, wherein, The behavior of the terminal device triggering cell reselection before a cell reselection condition is met further includes satisfying a fourth condition, and the fourth condition is that a length of time that the terminal device stays in the serving cell exceeds a third time length; and the third time length is used to indicate a minimum length of time that the terminal device needs to stay in the serving cell.

34. The terminal device of any one of claims 20-33, wherein, The speed state of the terminal device includes one or more of the following: a normal speed state, a medium speed state, and a high speed state, and the terminal device further includes: The scaling module is configured to scale the first time length threshold if the speed state of the terminal device is the medium speed state or the high speed state.

35. The terminal device of any one of claims 20-34, wherein, The terminal device further includes: The third receiving module is configured to receive indication information sent by the network device, the indication information being used to indicate whether the terminal device is allowed to trigger the behavior of cell reselection before a cell reselection condition is met.

36. A network device, comprising: The first sending module is configured to send second configuration information to the terminal device, the second configuration information being related to the first event, and the second configuration information including an eighth parameter used to indicate a value of the first time length, and the first time length being used to indicate a length of a time window in which the terminal device predicts a cell measurement result. The first event includes: The measurement result of the first cell at a second time after the first time length is predicted to just meet a cell reselection condition; or The measurement result of the first cell at a second time after the first time length is predicted to just meet a cell reselection condition, and the measurement result of the serving cell of the terminal device predicted from the first time to the second time does not meet a cell stay criterion; or The measurement result of the serving cell at a fourth time after the first time length is predicted to just meet a cell stay criterion, and the measurement result of the first cell at the fourth time predicted from the first time does not meet a cell reselection condition. The first cell is a neighboring cell of the terminal device. The network device further includes:

37. The network device of claim 36, wherein, The second sending module is configured to send first configuration information to the terminal device, the first configuration information being related to the behavior of the terminal device triggering cell reselection before a cell reselection condition is met, and the first configuration information including any one of the following: A first parameter used to indicate a value of a second time length; or A second parameter used to indicate a value of a fourth threshold; or A third parameter used to indicate a value of a fifth threshold; or A fourth parameter used to indicate a value of a sixth threshold and a fifth parameter used to indicate a value of a seventh threshold; or A sixth parameter used to indicate a value of an eighth threshold; or ​ A seventh parameter, the seventh parameter being used for indicating a value of a ninth threshold value; or A sixth parameter and a seventh parameter, the sixth parameter being used for indicating a value of an eighth threshold value, and the seventh parameter being used for indicating a value of a ninth threshold value. The network device further includes:

38. The network device of claim 36 or 37, wherein, A third sending module, configured to send indication information to the terminal device, the indication information being used for indicating whether the terminal device is allowed to trigger a cell reselection behavior before a cell reselection condition is met. A terminal device including a memory and a processor, the memory being used for storing a program, and the processor being used for invoking the program in the memory, so as to make the terminal device perform the method in any one of claims 1-16.

39. A terminal device, comprising: A network device including a transceiver, a memory and a processor, the memory being used for storing a program, the processor being used for invoking the program in the memory and controlling the transceiver to receive or send a signal, so as to make the network device perform the method in any one of claims 17-19.

40. A network device, comprising: An apparatus including a processor, configured to invoke a program from a memory, so as to make the apparatus perform the method in any one of claims 1-16 or 17-19.

41. An apparatus comprising: An apparatus including a processor, configured to invoke a program from a memory, so as to make a device installed with the chip perform the method in any one of claims 1-16 or 17-19.

42. A chip, comprising: A computer program product, having a program stored thereon, the program causing a computer to perform the method in any one of claims 1-16 or 17-19.

43. A computer-readable storage medium, comprising: A computer program product, having a program stored thereon, the program causing a computer to perform the method in any one of claims 1-16 or 17-19.

44. A computer program product, characterised in that, The computer program product causes a computer to perform the method in any one of claims 1-16 or 17-19.

45. A computer program, characterized in that, ​

Images