Communication methods, terminals, network devices, communication system and storage medium

Abstract

Communication methods, terminals, network devices, a communication system, and a storage medium. A method executed by a terminal comprises: acquiring first information for predicting a wireless link; and determining, on the basis of the first information, that a link failure is about to occur, and executing a corresponding link failure operation. Using the technical solution of the present disclosure can shorten service interruption durations, so as to quickly restore network services.

Description

Communication method, terminal, network device, communication system and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a communication method, a terminal, a network device, a communication system, and a storage medium. Background Art

[0002] Machine learning algorithms are one of the most important implementation methods of artificial intelligence (AI) technology. Machine learning uses large amounts of training data to generate models, which can then be used to predict events. In many fields, machine learning models can produce highly accurate predictions. In the field of communications technology, these models can also be used for event prediction.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide a communication method, a terminal, a network device, a communication system, and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a terminal. The method includes: obtaining first information on wireless link prediction; determining that a link failure will occur based on the first information, and performing a corresponding link failure operation.

[0006] According to a second aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a network device. The method includes: sending a second indication to a terminal, wherein the second indication is used to instruct the terminal to perform a corresponding link failure operation when it is determined that a link failure will occur based on first information predicted for the wireless link.

[0007] According to a third aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0008] The processing module is configured to obtain first information on wireless link prediction; determine that a link failure will occur based on the first information, and perform a corresponding link failure operation.

[0009] According to a fourth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0010] The transceiver module is used to send a second indication to the terminal, where the second indication is used to instruct the terminal to perform a corresponding link failure operation when it is determined that a link failure will occur according to the first information predicted for the wireless link.

[0011] According to the fifth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; a memory coupled to the processor, wherein the memory stores executable instructions, and when the executable instructions are executed by the processor, the terminal executes the communication method described in the first aspect.

[0012] According to the sixth aspect of an embodiment of the present disclosure, a network device is proposed, comprising: one or more processors; a memory coupled to the processor, wherein the memory stores executable instructions, and when the executable instructions are executed by the processor, the network device executes the communication method described in the second aspect.

[0013] According to the seventh aspect of an embodiment of the present disclosure, a communication system is proposed, comprising a terminal and a network device, wherein the terminal is configured to implement the communication method described in the first aspect, and the network device is configured to implement the communication method described in the second aspect.

[0014] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method described in the first aspect or the second aspect.

[0015] By adopting the above technical solution of the present disclosure, at least the following beneficial technical effects can be achieved:

[0016] By acquiring the first information on the wireless link prediction, the terminal can perform corresponding link failure operations when it is determined that a link failure will occur according to the first information. This can shorten the duration of service interruption and quickly restore network services. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0018] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0019] FIG2 is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure.

[0020] FIG3A is a flow chart illustrating a communication method according to an embodiment of the present disclosure.

[0021] FIG3B is a flow chart illustrating a communication method according to an embodiment of the present disclosure.

[0022] FIG3C is a flow chart illustrating a communication method according to an embodiment of the present disclosure.

[0023] FIG4 is a flow chart showing a communication method according to an embodiment of the present disclosure.

[0024] FIG5 is an interactive diagram illustrating a communication method according to an embodiment of the present disclosure.

[0025] FIG6 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.

[0026] FIG7 is a schematic diagram of the structure of a network device proposed according to an embodiment of the present disclosure.

[0027] FIG8A is a schematic structural diagram of a communication device according to an embodiment of the present disclosure.

[0028] FIG8B is a schematic structural diagram of a chip according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] The embodiments of the present disclosure provide a communication method, a terminal, a network device, a communication system, and a storage medium.

[0030] In a first aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a terminal, and the method includes: obtaining first information on wireless link prediction; determining that a link failure will occur based on the first information, and performing a corresponding link failure operation.

[0031] In the above embodiment, the terminal obtains the first information of the wireless link prediction and can perform the corresponding link failure operation when it is determined that a link failure will occur based on the first information. This can shorten the duration of service interruption caused by waiting for the relevant timer to time out to trigger the link failure, thereby quickly restoring network services and improving the robustness of the wireless link.

[0032] In combination with some embodiments of the first aspect, in some embodiments, the link failure includes cell handover failure and / or radio link failure.

[0033] In the above embodiments, it is specified that the link failure includes cell handover failure and / or radio link failure.

[0034] In conjunction with some embodiments of the first aspect, in some embodiments, the link failure operation includes at least one of the following:

[0035] Cell switching;

[0036] Radio Resource Control (RRC) re-establishment.

[0037] In the above embodiments, network services can be quickly restored by performing cell handover and / or RRC re-establishment.

[0038] In combination with some embodiments of the first aspect, in some embodiments, executing the corresponding link failure operation includes: if a first cell exists, initiating a cell handover to the first cell, the first cell being a cell that meets the first condition.

[0039] In the above embodiment, by initiating a cell handover to the first cell when it is determined that the first cell exists, the network of the terminal can be quickly restored and the robustness of the handover can be improved.

[0040] In combination with some embodiments of the first aspect, in some embodiments, the execution of the corresponding link failure operation includes: if the first cell does not exist, triggering RRC reconstruction, and the first cell is a cell that meets the first condition.

[0041] In the above embodiment, by triggering RRC reestablishment when it is determined that the first cell does not exist, the network of the terminal can be quickly restored.

[0042] In combination with some embodiments of the first aspect, in some embodiments, whether the first cell exists is determined in the following manner: after determining that the link failure will occur, judging whether the second cell meets the first condition; and determining the second cell that meets the first condition as the first cell.

[0043] In the above embodiment, after determining that a link failure is about to occur, a trigger is triggered to determine whether the second cell meets the first condition. The second cell that meets the first condition is then determined as the first cell. Because this takes into account the variability of the radio signal quality of cells, it can more accurately determine the first cell that is suitable for the current scenario, thereby avoiding problems such as a short stay in the first cell and poor service quality in the first cell.

[0044] In combination with some embodiments of the first aspect, in some embodiments, the second cell is a cell configured by a network device.

[0045] In the above embodiment, by selecting the first cell from the second cell configured by the network device, the terminal can reduce the selection range of the first cell, improve efficiency, and thus quickly restore network services.

[0046] In combination with some embodiments of the first aspect, in some embodiments, the cell configured by the network device includes a cell configured in a condition-based handover (CHO) configuration.

[0047] In the above embodiment, by using the cell in the CHO configuration as the second cell to be evaluated / judged, the utilization rate of the CHO configuration is improved, and the resource consumption of the network device caused by the additional configuration of the second cell by the terminal can be reduced.

[0048] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes: determining the first condition, wherein the first condition includes:

[0049] One or more of the handover conditions in the CHO configuration; or

[0050] One or more of the specified conditions indicated by the network device; or,

[0051] One or more of the default conditions.

[0052] In the above embodiment, the first condition can be flexibly configured and selected according to needs.

[0053] In combination with some embodiments of the first aspect, in some embodiments, the CHO configuration includes a first indication, which is used to indicate that after determining that the link failure will occur, the terminal determines whether the first cell exists based on the cell and / or switching conditions in the CHO configuration.

[0054] In the above embodiment, by adding a first indication in the CHO configuration, the terminal can be instructed to determine whether the first cell exists based on the cells in the CHO configuration and / or the switching conditions in the CHO configuration after determining that a link failure will occur. This can not only improve the utilization rate of the CHO configuration, but also make the communication method of the present disclosure compatible with the CHO solution to avoid conflicts.

[0055] In conjunction with some embodiments of the first aspect, in some embodiments, the first condition includes:

[0056] A radio signal measurement result of the cell is higher than a first threshold, where the radio signal measurement result includes at least one of the following:

[0057] Reference signal received power RSRP;

[0058] Reference signal received quality RSRQ;

[0059] Signal to Interference and Noise Ratio SINR.

[0060] In the above embodiment, the above first condition can ensure the network quality of the terminal after switching to the first cell, and can avoid frequent cell switching.

[0061] In combination with some embodiments of the first aspect, in some embodiments, the first threshold value is configured by a network device or specified by a protocol.

[0062] In combination with some embodiments of the first aspect, in some embodiments, determining whether the second cell meets the first condition includes: determining whether the second cell meets the first condition based on a wireless signal measurement result of the second cell measured after determining that the link failure will occur.

[0063] In the above embodiment, whether the second cell meets the first condition is determined based on the radio signal measurement result of the second cell measured after determining that a link failure will occur. This ensures the timeliness of the radio signal measurement result of the second cell, improves the accuracy of the determination result, and facilitates the terminal to promptly perform link failure operations and restore network services.

[0064] In combination with some embodiments of the first aspect, in some embodiments, determining whether the second cell meets the first condition includes: determining whether the second cell meets the first condition based on a wireless signal measurement result of the second cell obtained before or at the same time as determining that the link failure will occur.

[0065] In the above embodiment, whether the second cell meets the first condition is determined based on a radio signal measurement result of the second cell obtained before or simultaneously with determining that a link failure will occur. This avoids the problem of being unable to quickly execute link failure operations to quickly restore network services due to waiting for the radio signal measurement result of the second cell after determining that a link failure will occur.

[0066] In combination with some embodiments of the first aspect, in some embodiments, before determining that a link failure will occur based on the first information, it includes: receiving a second indication sent by a network device; and determining based on the second indication whether the terminal is allowed to determine whether the link failure will occur based on the first information.

[0067] In the above embodiment, the terminal can be flexibly enabled or disabled according to the scenario through the instruction of the network device to determine whether a link failure will occur based on the first information and whether to perform a link failure operation.

[0068] In a second aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a network device, and the method includes: sending a second indication to a terminal, wherein the second indication is used to instruct the terminal to perform a corresponding link failure operation when it is determined that a link failure will occur based on first information predicted for the wireless link.

[0069] In combination with some embodiments of the second aspect, in some embodiments, the link failure includes cell handover failure and / or radio link failure.

[0070] In conjunction with some embodiments of the second aspect, in some embodiments, the link failure operation includes at least one of the following:

[0071] Cell switching;

[0072] Radio Resource Control (RRC) re-establishment.

[0073] In combination with some embodiments of the second aspect, in some embodiments, the second indication is used to instruct the terminal to initiate cell switching to the first cell if it is determined that there is a first cell, and the first cell is a cell that meets the first condition.

[0074] In combination with some embodiments of the second aspect, in some embodiments, the second indication is used to instruct the terminal to trigger RRC reconstruction if it determines that the first cell does not exist, and the first cell is a cell that meets the first condition.

[0075] In combination with some embodiments of the second aspect, in some embodiments, the first cell is a cell that meets the first condition and is determined by the terminal from among the second cells after determining that the link failure will occur.

[0076] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: sending a condition-based handover CHO configuration to the terminal, and the second cell includes a cell in the CHO configuration.

[0077] In combination with some embodiments of the second aspect, in some embodiments, the first condition includes a switching condition in the CHO configuration.

[0078] In combination with some embodiments of the second aspect, in some embodiments, the CHO configuration includes a first indication, which is used to instruct the terminal to determine whether the first cell exists based on the cells and / or switching conditions in the CHO configuration after determining that the link failure will occur.

[0079] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: sending a third indication to the terminal, where the third indication is used to indicate a specific condition, and the specific condition is used by the terminal to determine the first condition.

[0080] In conjunction with some embodiments of the second aspect, in some embodiments, the first condition includes: a radio signal measurement result of the cell is higher than a first threshold value, wherein the radio signal measurement result includes at least one of the following:

[0081] Reference signal received power RSRP;

[0082] Reference signal received quality RSRQ;

[0083] Signal to Interference and Noise Ratio SINR.

[0084] In a third aspect, an embodiment of the present disclosure proposes a terminal, which includes at least one of a transceiver module and a processing module; wherein the terminal is used to execute the optional implementation method of the first aspect.

[0085] In a fourth aspect, an embodiment of the present disclosure proposes a network device, which includes at least one of a transceiver module and a processing module; wherein the network device is used to execute the optional implementation method of the second aspect.

[0086] In a fifth aspect, an embodiment of the present disclosure proposes a terminal, which includes one or more processors; a memory coupled to the processor, on which executable instructions are stored, and when the executable instructions are executed by the processor, the terminal executes an optional implementation method of the first aspect.

[0087] In a sixth aspect, an embodiment of the present disclosure proposes a network device, which includes one or more processors; a memory coupled to the processor, on which executable instructions are stored, and when the executable instructions are executed by the processor, the network device executes the optional implementation method of the second aspect.

[0088] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, which includes a terminal and a network device, wherein the terminal is configured to execute the communication method described in the optional implementation manner of the first aspect, and the network device is configured to execute the communication method described in the optional implementation manner of the second aspect.

[0089] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium, wherein the storage medium stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0090] In a ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0091] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.

[0092] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0093] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0094] The present disclosure provides a communication method, terminal, network device, communication system, and storage medium. In some embodiments, the terms "communication method," "information processing method," and "connection recovery method" are interchangeable; the terms "communication device," "information processing device," and "connection recovery device" are interchangeable; and the terms "communication system," "information processing system," and "connection recovery system" are interchangeable.

[0095] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0096] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0097] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0098] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0099] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0100] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0101] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0102] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0103] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0104] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0105] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0106] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0107] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0108] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0109] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0110] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0111] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0112] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0113] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0114] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0115] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0116] FIG1 is a schematic diagram illustrating an architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , the communication system 100 may include a terminal 101 and a network device 102 .

[0117] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0118] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0119] Optionally, the access network device is, for example, a node or device that accesses the terminal to the wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0120] In some embodiments, the network device 102 is a base station. Optionally, the base station is, for example, a macro base station, a micro base station (also known as a small base station), a relay station, an access point, a 5G base station or a future base station, a satellite, a transmission point (TRP), a transmission point (TP), a mobile switching center, or other devices that perform base station functions in a communication system, etc., which are not specifically limited in the embodiments of the present disclosure. For ease of description, in all embodiments of the present disclosure, devices that provide wireless communication functions for terminal devices are collectively referred to as network devices or base stations.

[0121] In some embodiments, network device 102 is a core network device. A core network device can be a single device, including a first network element, a second network element, etc., or can be multiple devices or a group of devices, each including all or part of the first network element, the second network element, etc. The network element can be virtual or physical. The core network includes, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0122] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0123] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0124] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0125] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0126] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0127] In some embodiments, during a traditional handover process, the network configures the UE to perform measurements and sends a handover request to the target cell based on the measurement results reported by the UE. After the target cell is confirmed, the network sends a handover command (Reconfiguration with sync) to the UE. The handover command carries configuration information for the target cell, which may include bearer configuration, MAC (Medium Access Control) configuration, and random access configuration. After the UE receives the handover command, it synchronizes with the target cell, then initiates a random access process to access the target cell and begins using the carried target cell configuration.

[0128] In some embodiments, in order to improve the robustness of handover, 5G proposes conditional handover (CHO). That is, the network can configure the CHO configuration for the UE in advance, including the handover target cell configuration and the handover trigger condition, where the handover target cell configuration is the reconfiguration message provided by the target cell. The UE stores the received CHO handover command, performs RRM (Radio resource management) measurement, and determines whether the handover conditions are met. When the handover trigger condition is met, the UE performs the handover on its own. The handover is performed by performing a synchronous reconfiguration (Reconfiguration With Sync). This can avoid the failure of the wireless link caused by the base station sending the handover command too late.

[0129] In some embodiments, to shorten the handover process, a layer-triggered mobility (L1 / L2 Triggered Mobility, LTM) process is introduced. The network can send multiple target cell configurations to the UE in advance (for example, carried in the ltm-CandidateConfig), and the UE stores these configurations. The network can send an LTM Cell Switch Command MAC Control Element (LTM Cell Switch Command MAC Control Element) to the UE, indicating the target cell. After receiving the LTM Cell Switch Command MAC Control CE, the UE uses the stored corresponding configuration to initiate a handover to the target cell.

[0130] In some embodiments, after the UE initiates a handover to the target cell, it starts the T304 timer, disconnects from the source cell, synchronizes with the target cell, and then accesses the target cell through a random access process.

[0131] In some embodiments, if the target cell is successfully accessed before the T304 timer expires, the handover is successful and the T304 timer is stopped. If the T304 timer expires, the handover fails.

[0132] In some embodiments, the UE's RRC (Radio Resource Control) layer starts the T310 timer after receiving N310 consecutive out-of-sync indications (this parameter indicates the maximum number of consecutive "out-of-sync" indications received, which triggers the start of the T310 timer when the maximum number is reached). If the T310 timer times out, a Radio Link Failure (RLF) is triggered. If, while the T310 timer is running, N311 consecutive in-sync indications are received (this parameter is used to set the maximum number of consecutive "in-sync" indications required to stop the T310 timer), the T310 timer is stopped.

[0133] In some embodiments, T310 is a timer in seconds used to allow the UE to recover synchronization with the eNodeB.

[0134] In some embodiments, T304 refers to a timeout timer in an LTE system that ensures continuous communication between a UE (user equipment) and an eNodeB (base station) after entering the RRC_CONNECTED state. A T304 timeout indicates that no acknowledgment messages or other transmission packets have been received from the eNodeB within a certain period of time, meaning that no downlink traffic has been received. If the T304 timer expires, the UE will attempt to reestablish a connection.

[0135] In some embodiments, after a radio link failure or handover failure, the UE performs an RRC reestablishment. The UE selects a suitable cell through cell selection and initiates an RRC reestablishment procedure with the target cell to reestablish the RRC connection with the network. The target cell may not be able to recover data, resulting in service interruption.

[0136] In some embodiments, machine learning algorithms are one of the most important implementation methods of artificial intelligence technology. Machine learning can generate models from large amounts of training data, which can then be used to predict events. In many fields, models trained using machine learning can produce highly accurate predictions.

[0137] In some embodiments, after the AI ​​model is trained using big data related to wireless link connections and handovers, the AI ​​model can be used to predict whether wireless link failure or handover failure will occur in the future. For example, the AI ​​model can predict the success rate of handover to a certain cell or the probability of handover failure or the probability of wireless link failure based on the UE's real-time network environment. In some embodiments, the UE can carry the AI ​​model, and the UE can predict wireless link failure or handover failure based on the AI ​​model, and perform cell handover or RRC reconstruction in advance when it is predicted that a wireless link failure or handover failure will occur, so as to avoid service interruption caused by initiating cell handover or RRC reconstruction after the link fails.

[0138] As can be seen, in some embodiments, the UE needs to wait for a timer to expire, such as T304 or T310, before determining that a handover failure or radio link failure has occurred. This requires the UE to wait for a certain period of time. During this period of time, the UE may not be able to maintain communication with the network, resulting in service interruption. In view of this, the embodiments of the present disclosure provide a communication method, terminal, network device, communication system, and storage medium, which enable the UE to shorten the service interruption caused by waiting for the relevant timer to expire.

[0139] FIG2 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2 , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0140] In step S201 , the network device 102 sends a second instruction to the terminal 101 .

[0141] In some embodiments, terminal 101 receives a second indication.

[0142] In some embodiments, the second indication is used by the network device to instruct the terminal to predict the wireless link to obtain the first information.

[0143] In some embodiments, the second indication is used by the network device to indicate that the terminal is allowed to determine whether a link failure will occur based on the first information predicted for the wireless link.

[0144] In some embodiments, the second indication is used by the network device to instruct the terminal to perform a corresponding link failure operation based on whether the first cell exists when it is determined that a link failure will occur based on the first information predicted for the wireless link.

[0145] In some embodiments, the name of the second indication is not limited, and it can be, for example, a specific instruction, a function enabling instruction, a specific process triggering instruction, etc.

[0146] In some embodiments, the network device sends the second indication to the terminal via a system message and / or an RRC reconfiguration message.

[0147] For example, the network device sends a system message including the second indication, and the terminal obtains the system message to obtain the second indication.

[0148] For example, the network device sends an RRC reconfiguration message, where the RRC reconfiguration message includes the second indication, and the terminal obtains the RRC reconfiguration message to obtain the second indication.

[0149] Step S201 is an optional step and may not be performed in some embodiments.

[0150] In some embodiments, step S201 may be replaced by the terminal determining, based on an agreement between the terminal and the network device, that at least one of subsequent steps S202 to S205 can be performed. For example, based on the agreement between the terminal and the network device, the terminal determines that a wireless link can be predicted, and may determine whether a link failure will occur based on first information predicted about the wireless link, and may perform corresponding link failure operations if it is determined that a link failure will occur.

[0151] In some embodiments, step S201 may be replaced by the terminal determining, according to protocol provisions, that at least one of the subsequent steps S202 to S205 can be executed.

[0152] In some embodiments, step S201 may be omitted, and the communication system, network device, and terminal may all allow the terminal to execute at least one of the subsequent steps S202 to S205 by default.

[0153] Step S202: Terminal 101 predicts the wireless link and obtains first information.

[0154] In some embodiments, the first information is used to indicate, determine, or judge whether a link failure will occur.

[0155] In some embodiments, the name of the first information is not limited, and it can be, for example, prediction information, prediction results, model output results, etc.

[0156] In some embodiments, the implementation method of the terminal predicting the wireless link and obtaining the first information may be that the terminal instructs the trained AI model to predict the first information.

[0157] For example, when a terminal receives a handover command, the terminal predicts the wireless link and obtains the first information in an implementation manner that the terminal can determine the target cell that the terminal will access from the handover command, and the terminal can instruct the trained AI model to predict the first information based on the measurement information corresponding to the target cell in the most recent or multiple measurement results reported by the terminal, as well as the successful access information, link failure information, and other information when the terminal previously accessed the target cell. It should be noted that the implementation manner of determining that a link failure will occur in step S203 based on the first information predicted in this case, compared to the method in the related art of determining the link failure by waiting for the relevant timer (such as T304) to time out when a handover command is received, this implementation manner of the present disclosure can predict the link failure faster and earlier because there is no need to wait for the relevant timer to time out, thereby facilitating more timely processing of the link failure, thereby shortening the duration of service interruption or even avoiding service interruption.

[0158] For example, when the terminal does not receive a switching command, the terminal can also predict the current wireless link and obtain the first information. The implementation method can be that the terminal instructs the trained AI model to predict the first information based on the current location of the terminal, the current network environment, the wireless network environment in the previous period, the candidate cells that can be measured at present, the cells to be measured specified by the network device and other related information. Moreover, according to the implementation method of determining that a link failure will occur in step S203 based on the first information predicted in this case, compared with the method of determining the link failure by triggering and waiting for the relevant timer (such as T304) to time out in the related art, it can predict that a link failure will occur in the current scenario faster and earlier, thereby facilitating more timely processing of the link failure, thereby shortening the duration of the service interruption or even avoiding the service interruption.

[0159] For example, when the terminal does not receive a switching command, the implementation method for the terminal to predict the future wireless link and obtain the first information may be that the terminal instructs the trained AI model to predict the first information based on the current location of the terminal, the current network environment, historical cell measurement information, the predicted terminal movement trajectory, the predicted cell to be measured and other related information. Moreover, according to the implementation method of determining that a link failure will occur and needs to be recovered in step S203 based on the first information predicted in this case, compared with the method in the related art of determining the link failure by triggering in the future and waiting for the relevant timer (such as T304) to time out, it can predict the link failure in the future scenario faster and earlier, thereby facilitating more timely processing of the link failure, thereby shortening the duration of the service interruption or even avoiding the service interruption.

[0160] In some embodiments, the AI ​​model can be configured on the terminal 101, or the AI ​​model can be configured on other electronic devices that can communicate with the terminal 101, for example, the electronic device is another terminal or network device other than the terminal 101.

[0161] It should be noted that, in addition to obtaining the first information through prediction by the AI ​​model, the terminal 101 may also obtain the first information through other prediction methods, for example, by calculating the first information through a prediction algorithm.

[0162] In some embodiments, the terminal may periodically obtain the first information regarding the radio link prediction. In other embodiments, the terminal may trigger the acquisition of the first information regarding the radio link prediction based on an instruction from a network device. The present disclosure does not limit the timing for the terminal to obtain the first information regarding the radio link prediction. In other words, the present disclosure does not limit the triggering event for triggering the terminal to obtain the first information regarding the radio link prediction.

[0163] In step S203, the terminal 101 determines that a link failure will occur based on the first information, and determines whether a first cell exists.

[0164] In some embodiments, the link failure includes a cell handover failure and / or a radio link failure. The name of the link failure is not limited, and it can be, for example, a connection failure, a communication failure, etc.

[0165] In some embodiments, the first information may include a first probability, which may be used to represent a success rate or a handover failure rate of a terminal handing over to a certain cell, or a probability of a radio link failure. The name of the first probability is not limited, and it can be, for example, a success rate, a failure rate, a probability parameter, etc.

[0166] In some embodiments, before step S203, the terminal determines whether a link failure will occur based on whether the magnitude relationship between the first probability and a preset threshold meets the requirement. It should be explained that the link failure will occur refers to the link failure occurring at the current time point or a future time point.

[0167] In some embodiments, whether the size relationship between the first probability and the preset threshold meets the requirements may refer to whether the size relationship between the first probability and the preset threshold meets the requirement that the first probability is greater than or equal to the preset threshold. For example, assume that the first probability is a predicted probability indicating a link failure. Also, assume that the preset threshold refers to a preset lower limit of the probability indicating a link failure. Then, if the predicted first probability indicating a link failure is greater than or equal to the lower limit of the probability indicating a link failure (i.e., the preset threshold), it means that the size relationship between the first probability and the preset threshold meets the requirements, and in this case, it can be determined that a link failure will occur.

[0168] In some embodiments, whether the size relationship between the first probability and the preset threshold meets the requirements may refer to whether the size relationship between the first probability and the preset threshold meets the requirement that the first probability is less than the preset threshold. For example, assume that the first probability is the predicted probability that link failure will not occur. Also, assume that the preset threshold refers to a pre-set lower limit of the probability indicating that link failure will not occur. Then, when the predicted first probability indicating that link failure will not occur is less than the lower limit of the probability indicating that link failure will not occur (i.e., the preset threshold), it means that the size relationship between the first probability and the preset threshold meets the requirements, and in this case, it can be determined that link failure will occur.

[0169] In some embodiments, when a terminal determines based on the first information that a link failure will occur, the terminal determines whether a first cell exists. Optionally, the first cell is a cell that meets the first condition. Optionally, the terminal determines to perform a corresponding link failure operation based on whether the first cell exists. Optionally, the link failure operation includes cell handover and / or radio resource control (RRC) reestablishment.

[0170] In some embodiments, the terminal may determine whether the first cell exists by: after determining that a link failure will occur, judging whether the second cell meets the first condition; and determining the second cell that meets the first condition as the first cell.

[0171] In some embodiments, before determining whether the second cell meets the first condition, the terminal may determine the first condition. Optionally, the first condition includes:

[0172] One or more of the handover conditions in the CHO configuration; or

[0173] One or more of the specified conditions indicated by the network device; or,

[0174] One or more of the default conditions.

[0175] For example, the terminal 101 stores a CHO configuration pre-configured by the network device 102. Alternatively, the network device 102 sends the CHO configuration to the terminal 101. The CHO configuration may include a first indication, which is used to indicate that the switching condition in the CHO configuration can be used as the first condition after determining that a link failure will occur. The link failure includes a switching failure and a link failure under non-switching conditions. The terminal 101 determines one or more switching conditions in the CHO configuration as the first condition. The first indication may further indicate that the conditional switching in the CHO configuration can be used only for the first condition when a switching failure occurs, or only for the first condition when a link failure is recovered, or can be used for both the first condition when a switching occurs and the first condition when a link failure is recovered.

[0176] For example, the network device sends a third indication to the terminal, where the third indication is used to indicate a specific condition. The terminal 101 determines the one or more specific conditions indicated by the network device as the first condition.

[0177] For example, one or more default conditions are pre-configured on the terminal. The terminal 101 determines the one or more default conditions as the first condition.

[0178] In some embodiments, the first condition may include: a radio signal measurement result of the cell being higher than a first threshold. Optionally, the radio signal measurement result includes at least one of RSRP, RSRQ, and SINR. Optionally, the first threshold is configured by the network device or specified by the protocol. For example, if the RSRP of a cell is higher than the first threshold, the cell may be determined to meet the first condition.

[0179] In some embodiments, the second cell may be a cell configured by the network device. For example, the network device sends second information to the terminal, where the second information indicates one or more second cells configured by the network device.

[0180] In some embodiments, the second cell may be one or more handover target cells in a CHO configuration. For example, the network device 102 sends a CHO configuration to the terminal 101. The CHO configuration may include a first indication, which may be used to indicate that a cell in the CHO configuration can be used as a second cell after determining that a link failure will occur. The terminal 101 determines one or more handover target cells in the CHO configuration as the second cell. The first indication may further indicate that the target in the CHO configuration can be used only as a target cell in the event of a handover failure, or only as a target cell in the event of link failure recovery, or can be used as both a target cell in the event of a handover and a target cell in the event of link failure recovery.

[0181] In some embodiments, the first indication in the CHO configuration may also be used to instruct the terminal 101 to determine whether the first cell exists based on the cells and handover conditions in the CHO configuration after determining that a link failure will occur. In other words, the embodiment in which the terminal determines one or more handover conditions in the CHO configuration as the first condition can be combined with the embodiment in which the terminal determines one or more handover target cells in the CHO configuration as the second cell, thereby determining whether the first cell exists.

[0182] In some embodiments, the second cell may be a cell corresponding to a beam that can be detected by the terminal.

[0183] In some embodiments, the implementation of determining whether the second cell meets the first condition may include: determining whether the second cell meets the first condition based on a radio signal measurement result of the second cell measured after determining that a link failure will occur.

[0184] For example, if the RSRQ of the second cell measured after determining that a link failure will occur is higher than the first threshold, it can be determined that the second cell meets the first condition and the second cell is determined as the first cell.

[0185] In some embodiments, the implementation of determining whether the second cell meets the first condition may include: determining whether the second cell meets the first condition based on a wireless signal measurement result of the second cell measured before determining that a link failure will occur.

[0186] For example, if the RSRQ of the second cell measured before it is determined that the link failure will occur is higher than the first threshold, it can be determined that the second cell meets the first condition and the second cell is determined as the first cell.

[0187] In some embodiments, the implementation of determining whether the second cell meets the first condition may include: determining whether the second cell meets the first condition based on a wireless signal measurement result of the second cell measured while determining that a link failure will occur.

[0188] For example, if the RSRQ of the second cell measured while determining that a link failure will occur is higher than the first threshold, it can be determined that the second cell meets the first condition and the second cell is determined as the first cell.

[0189] After step S203, one of step S204 and step S205 is executed.

[0190] Step S204: Terminal 101 determines that a first cell exists, and initiates a cell handover to the first cell.

[0191] In some embodiments, if the terminal determines that there is a first cell that meets the first condition, a cell handover may be initiated to the first cell that meets the first condition.

[0192] In some embodiments, if there are multiple first cells, a first cell with the best wireless signal measurement result may be selected for cell switching.

[0193] Step S205: Terminal 101 determines that the first cell does not exist, and triggers RRC reestablishment.

[0194] In some embodiments, if the terminal determines that there is no cell that meets the first condition, the terminal triggers RRC re-establishment.

[0195] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0196] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0197] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0198] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0199] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0200] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0201] The communication method according to the embodiments of the present disclosure may include at least one of steps S201 to S205. For example, step S201 may be implemented as an independent embodiment, step S202 may be implemented as an independent embodiment, steps S202 to S204 may be implemented as independent embodiments, and steps S202, S203, and S205 may be implemented as independent embodiments, but are not limited thereto.

[0202] In some embodiments, any two steps in step S201 to step S205 can be executed in an interchangeable order or simultaneously.

[0203] In some embodiments, steps S202 to S205 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0204] In some embodiments, step S201 is optional and may be omitted or replaced in different embodiments.

[0205] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0206] FIG3A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3A , the present disclosure embodiment relates to a communication method, which is executed by the terminal side, and the method includes:

[0207] Step S3101: Acquire first information for wireless link prediction.

[0208] The optional implementation of step S3101 can refer to the optional implementation of step S202 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0209] Step S3102: Determine that a link failure will occur based on the first information, determine that a first cell exists, and initiate a cell handover to the first cell.

[0210] The optional implementation of step S3102 can refer to the optional implementation of step S203 and step S204 in Figure 2, and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0211] The communication method involved in the embodiment of the present disclosure may include at least one of step S3101 and step S3102. For example, step S3101 may be implemented as an independent embodiment, and step S3102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0212] In some embodiments, step S3101 and step S3102 may be executed in an interchanged order or simultaneously.

[0213] In some embodiments, step S3102 is optional and may be omitted or replaced in different embodiments.

[0214] In some embodiments, step S3102 is optional and may be omitted or replaced in different embodiments.

[0215] In some embodiments, step S3103 may be included before step S3101 and / or step S3102, and step S3103 may be for the terminal to receive a second indication.

[0216] The optional implementation of step S3103 can refer to the optional implementation of step S201 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0217] In some embodiments, the terminal 101 receives the second indication sent by the network device 102, but is not limited thereto and may also receive the second indication sent by other entities.

[0218] In some embodiments, terminal 101 obtains a second indication specified by the protocol.

[0219] In some embodiments, terminal 101 obtains the second indication from upper layer(s).

[0220] In some embodiments, terminal 101 performs processing to obtain the second indication.

[0221] In some embodiments, step S3103 may be omitted, and the terminal 101 may autonomously implement the function indicated by the second indication, or the above function may be default or acquiescent.

[0222] FIG3B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3B , the present disclosure embodiment relates to a communication method, which is executed by the terminal side, and the method includes:

[0223] Step S3201: Acquire first information for wireless link prediction.

[0224] The optional implementation of step S3201 can refer to the optional implementation of step S202 in Figure 2, step S3102 in Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0225] Step S3202: Determine based on the first information that a link failure will occur, determine that the first cell does not exist, and trigger RRC reconstruction.

[0226] The optional implementation of step S3202 can refer to the optional implementation of step S203 and step S205 in Figure 2, and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0227] The communication method involved in the embodiment of the present disclosure may include at least one of step S3201 and step S3202. For example, step S3201 may be implemented as an independent embodiment, and step S3202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0228] In some embodiments, step S3201 and step S3202 may be executed in an interchangeable order or simultaneously.

[0229] In some embodiments, step S3202 is optional and may be omitted or replaced in different embodiments.

[0230] In some embodiments, step S3203 is optional and may be omitted or replaced in different embodiments.

[0231] In some embodiments, step S3203 may be included before step S3201 and / or step S3202, and step S3203 may be for the terminal to receive a second indication.

[0232] The optional implementation of step S3203 can refer to step S201 in Figure 2, the optional implementation of step S3103 in the aforementioned embodiment, and other related parts of the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0233] FIG3C is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3C , the present disclosure embodiment relates to a communication method, which is executed by the terminal side, and the method includes:

[0234] Step S3301: Acquire first information for wireless link prediction.

[0235] The optional implementation of step S3301 can refer to the optional implementation of step S202 in Figure 2, step S3102 in Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0236] Step S3302: Determine that a link failure will occur based on the first information, and perform a corresponding link failure operation.

[0237] The optional implementation of step S3302 can be found in step S203, step S204, step S205 of Figure 2, step S3103 of Figure 3A, and step S3203 of Figure 3B, as well as other related parts in the embodiments involved in Figures 2, 3A, and 3B, which will not be repeated here.

[0238] Step S3302 may be replaced by determining that a link failure will occur based on the first information, and determining to perform a corresponding link failure operation based on whether a first cell exists, where the first cell is a cell that meets the first condition.

[0239] The communication method involved in the embodiment of the present disclosure may include at least one of step S3301 and step S3302. For example, step S3301 may be implemented as an independent embodiment, and step S3302 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0240] In some embodiments, step S3301 and step S3302 may be executed in an interchanged order or simultaneously.

[0241] In some embodiments, step S3301 is optional and may be omitted or replaced in different embodiments.

[0242] In some embodiments, step S3302 is optional and may be omitted or replaced in different embodiments.

[0243] In the embodiment of the present disclosure, step S3301 may be combined with step S3103 in the embodiment of FIG. 3A , but is not limited thereto.

[0244] FIG4 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4 , the present disclosure embodiment relates to a communication method, which is executed by a network device side, and the method includes:

[0245] Step S401: Send a second instruction.

[0246] The optional implementation of step S401 can refer to the optional implementation of step S201 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0247] In some embodiments, the network device 102 sends the second indication to the terminal 101, but is not limited thereto and may also send the second indication to other entities.

[0248] Figure 5 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 5, the embodiment of the present disclosure relates to a communication method, which includes:

[0249] Step S501: The network device sends a second instruction to the terminal.

[0250] Optional implementations of step S501 can refer to step S201 in FIG. 2 , optional implementations of step S401 in FIG. 4 , and other related parts in the embodiments involved in FIG. 2 and FIG. 4 , which will not be described in detail here.

[0251] Step S502: The terminal obtains first information on wireless link prediction.

[0252] Optional implementations of step S502 can be found in step S202 of FIG. 2 , step S3101 of FIG. 3A , and step S3201 of FIG. 3B , as well as other related parts in the embodiments involved in FIG. 2 , FIG. 3A , and FIG. 3B , which will not be described in detail here.

[0253] Step S503: The terminal determines that a link failure will occur according to the first information, and determines to perform a corresponding link failure operation according to whether the first cell exists.

[0254] The optional implementation of step S503 can refer to the optional implementation of step S203, step S204, step S205 in Figure 2, step S3102 in Figure 3A, step S3202 in Figure 3B, and other related parts in the embodiments involved in Figures 2, 3A, and 3B, which will not be repeated here.

[0255] The communication method involved in the embodiment of the present disclosure may include at least one of steps S501 to S503. For example, step S501 may be implemented as an independent embodiment, step S502 may be implemented as an independent embodiment, and step S503 may be implemented as an independent embodiment, but is not limited thereto.

[0256] In some embodiments, step S502 and step S503 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0257] In some embodiments, step S501 and step S503 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0258] In some embodiments, step S501 and step S502 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0259] In some embodiments, the above method may include the method described in the above embodiments of the communication system side, terminal side, network device side, etc., which will not be repeated here.

[0260] In some embodiments, in embodiment 1, the UE obtains a link failure prediction result, and after determining that a link failure will occur, the UE initiates a handover to a first target cell that meets a first condition.

[0261] Optionally, the link failure may be a handover failure and / or a wireless link failure.

[0262] In some embodiments, embodiment 2, based on embodiment 1, the target cell is a target cell configured by the network.

[0263] In some embodiments, in Example 3, based on Example 1 and / or 2, the network may add an indication to the CHO configuration, indicating that the CHO is for handover when a link fails and recovers. With this CHO configuration, the UE evaluates handover conditions only after a link failure and, if the conditions are met, switches to the target cell. If no link failure occurs, the UE does not evaluate handover conditions and does not switch to the CHO cell.

[0264] In some embodiments, embodiment 4, based on embodiment 2, the target cell may be a CHO target cell.

[0265] In some embodiments, in embodiment 5, based on embodiment 1, the first condition is at least one of the following:

[0266] A. The radio signal measurement result of the target cell is higher than a first threshold, where the first threshold may be specified by a protocol or configured by a network.

[0267] B. The wireless signal measurement result of the target cell meets the handover condition, which is carried in the CHO configuration.

[0268] In some embodiments, embodiment 6, based on any one of embodiments 1-5, if there is no first target cell that meets the first condition, the UE initiates an RRC re-establishment process.

[0269] The communication method, terminal, network device, communication system, and storage medium provided by the embodiments of the present disclosure can enable a UE to switch to a first target cell after predicting a link failure, thereby shortening service interruption. Alternatively, the UE can initiate an RRC reestablishment process after predicting a link failure, thereby shortening service interruption.

[0270] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0271] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0272] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0273] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0274] Figure 6 is a structural diagram of a terminal proposed according to an embodiment of the present disclosure. As shown in Figure 6, the terminal 600 may include: at least one of a transceiver module 601, a processing module 602, etc. In some embodiments, the processing module 602 is used to obtain first information for wireless link prediction; determine that a link failure will occur based on the first information, and perform corresponding link failure operations. Optionally, the transceiver module is used to execute at least one of the communication steps such as sending and / or receiving (for example, step S201, but not limited to this) executed by the terminal 101 in any of the above methods, which will not be repeated here. Optionally, the processing module is used to execute at least one of the other steps (for example, step S202, step S203, step S204, step S205, but not limited to this) executed by the terminal 101 in any of the above methods, which will not be repeated here.

[0275] Optionally, the link failure includes cell handover failure and / or radio link failure.

[0276] Optionally, the link failure operation includes at least one of the following:

[0277] Cell switching;

[0278] Radio Resource Control (RRC) re-establishment.

[0279] Optionally, the processing module 602 is configured to initiate a cell handover to a first cell if it is determined that a first cell exists, and the first cell is a cell that meets a first condition.

[0280] Optionally, the processing module 602 is configured to trigger RRC re-establishment if it is determined that the first cell does not exist, and the first cell is a cell that meets the first condition.

[0281] Optionally, the processing module 602 is configured to determine whether the first cell exists by:

[0282] After determining that the link failure will occur, determining whether the second cell meets the first condition;

[0283] The second cell that meets the first condition is determined as the first cell.

[0284] Optionally, the second cell is a cell configured by the network device.

[0285] Optionally, the cell configured by the network device includes a cell configured in a condition-based handover (CHO) configuration.

[0286] Optionally, the processing module 602 is configured to determine the first condition, where the first condition includes:

[0287] One or more of the handover conditions in the CHO configuration; or

[0288] One or more of the specified conditions indicated by the network device; or

[0289] One or more of the default conditions.

[0290] Optionally, the CHO configuration includes a first indication, where the first indication is used to instruct the terminal to determine whether the first cell exists according to cells and / or handover conditions in the CHO configuration after determining that the link failure will occur.

[0291] Optionally, the first condition includes:

[0292] A radio signal measurement result of the cell is higher than a first threshold, where the radio signal measurement result includes at least one of the following:

[0293] Reference signal received power RSRP;

[0294] Reference signal received quality RSRQ;

[0295] Signal to Interference and Noise Ratio SINR.

[0296] Optionally, the first threshold is configured by the network device or specified by a protocol.

[0297] Optionally, the processing module 602 is configured to determine whether the second cell meets the first condition according to a radio signal measurement result of the second cell measured after determining that the link failure will occur.

[0298] Optionally, the processing module 602 is configured to determine whether the second cell meets the first condition according to a radio signal measurement result of the second cell obtained before or simultaneously with determining that the link failure will occur.

[0299] Optionally, the transceiver module 601 is used to receive a second indication sent by the network device before determining that a link failure will occur based on the first information; the processing module 602 is used to determine whether to allow the terminal to determine whether the link failure will occur based on the first information based on the second indication.

[0300] Figure 7 is a structural diagram of a network device proposed according to an embodiment of the present disclosure. As shown in Figure 7, the network device 700 may include: at least one of a transceiver module 701, a processing module 702, etc. In some embodiments, the transceiver module 701 is used to send a second indication to the terminal, and the second indication is used to instruct the terminal to perform a corresponding link failure operation when it is determined that a link failure will occur based on the first information predicted for the wireless link. Optionally, the transceiver module is used to execute at least one of the communication steps such as sending and / or receiving (for example, step S201, but not limited to this) executed by the network device 102 in any of the above methods, which will not be repeated here. Optionally, the processing module is used to execute at least one of the other steps (for example, step S202, step S203, step S204, step S205, but not limited to this) executed by the network device 102 in any of the above methods, which will not be repeated here.

[0301] Optionally, the link failure includes cell handover failure and / or radio link failure.

[0302] Optionally, the link failure operation includes at least one of the following:

[0303] Cell switching;

[0304] Radio Resource Control (RRC) re-establishment.

[0305] Optionally, the second indication is used to instruct the terminal to initiate cell switching to the first cell if it is determined that there is a first cell, and the first cell is a cell that meets the first condition.

[0306] Optionally, the second indication is used to instruct the terminal to trigger RRC reconstruction if it is determined that the first cell does not exist, and the first cell is a cell that meets the first condition.

[0307] Optionally, the first cell is a cell that meets the first condition and is determined from second cells by the terminal after determining that the link failure will occur.

[0308] Optionally, the transceiver module 701 is configured to send a condition-based handover CHO configuration to the terminal, and the second cell includes a cell in the CHO configuration.

[0309] Optionally, the first condition includes a switching condition in the CHO configuration.

[0310] Optionally, the CHO configuration includes a first indication, and the first indication is used to instruct the terminal to determine whether the first cell exists according to the cells and / or switching conditions in the CHO configuration after determining that the link failure will occur.

[0311] Optionally, the transceiver module 701 is used to send a third indication to the terminal, where the third indication is used to indicate a specific condition, and the specific condition is used by the terminal to determine the first condition.

[0312] Optionally, the first condition includes:

[0313] A radio signal measurement result of the cell is higher than a first threshold, where the radio signal measurement result includes at least one of the following:

[0314] Reference signal received power RSRP;

[0315] Reference signal received quality RSRQ;

[0316] Signal to Interference and Noise Ratio SINR.

[0317] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0318] In some embodiments, the processing module can be a single module or include multiple submodules. Optionally, the multiple submodules each execute all or part of the steps required to be executed by the processing module. Optionally, the processing module and the processor can be interchangeable.

[0319] Figure 8A is a schematic diagram of the structure of a communication device 8100 according to an embodiment of the present disclosure. Communication device 8100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 8100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0320] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 8100 is used to perform any of the above methods. Optionally, one or more processors 8101 are used to call instructions to enable the communication device 8100 to perform any of the above methods.

[0321] In some embodiments, the communication device 8100 further includes one or more transceivers 8102. When the communication device 8100 includes one or more transceivers 8102, the transceiver 8102 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S201, but not limited thereto), and the processor 8101 performs at least one of the other steps (for example, step S202, step S203, step S204, step S205, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0322] In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Alternatively, all or part of the memories 8103 may be located outside the communication device 8100. In alternative embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuits 8104 are connected to the memories 8103 and may be configured to receive data from the memories 8103 or other devices, or to send data to the memories 8103 or other devices. For example, the interface circuits 8104 may read data stored in the memories 8103 and send the data to the processor 8101.

[0323] The communication device 8100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0324] 8B is a schematic diagram of the structure of a chip 8200 according to an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present invention is not limited thereto.

[0325] The chip 8200 includes one or more processors 8201. The chip 8200 is configured to execute any of the above methods.

[0326] In some embodiments, chip 8200 further includes one or more interface circuits 8202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 8200 further includes one or more memories 8203 for storing data. Alternatively, all or part of memory 8203 may be located external to chip 8200. Optionally, interface circuit 8202 is connected to memory 8203 and may be used to receive data from memory 8203 or other devices, or may be used to send data to memory 8203 or other devices. For example, interface circuit 8202 may read data stored in memory 8203 and send the data to processor 8201.

[0327] In some embodiments, the interface circuit 8202 performs at least one of the communication steps (e.g., step S201, but not limited thereto) in the above method, such as sending and / or receiving. For example, the interface circuit 8202 performing the communication steps (e.g., sending and / or receiving) in the above method means that the interface circuit 8202 performs data exchange between the processor 8201, the chip 8200, the memory 8203, or the transceiver device. In some embodiments, the processor 8201 performs at least one of the other steps (e.g., step S202, step S203, step S204, and step S205, but not limited thereto).

[0328] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0329] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto, and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto, and may also be a temporary storage medium.

[0330] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0331] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A communication method, characterized in that: Executed by a terminal, the method includes: Acquiring first information on wireless link prediction; It is determined that a link failure will occur based on the first information, and a corresponding link failure operation is performed.

2. The method according to claim 1, characterized in that The link failure includes cell handover failure and / or radio link failure.

3. The method according to claim 1 or 2, characterized in that The link failure operation includes at least one of the following: Cell switching; Radio Resource Control (RRC) re-establishment.

4. The method according to claim 3, characterized in that The performing of the corresponding link failure operation includes: If the first cell exists, a cell handover is initiated to the first cell, and the first cell is a cell that meets the first condition.

5. The method according to claim 3, characterized in that The performing of the corresponding link failure operation includes: If the first cell does not exist, RRC re-establishment is triggered, and the first cell is a cell that meets the first condition.

6. The method according to claim 4 or 5, characterized in that Determine whether the first cell exists by: After determining that the link failure will occur, determining whether the second cell meets the first condition; The second cell that meets the first condition is determined as the first cell.

7. The method according to claim 6, characterized in that The second cell is a cell configured by the network device.

8. The method according to claim 7, characterized in that The cells configured by the network device include cells configured in a condition-based handover (CHO) configuration.

9. The method according to any one of claims 6 to 8, characterized in that The method further includes determining the first condition, wherein the first condition includes: One or more of the handover conditions in the CHO configuration; or One or more of the specified conditions indicated by the network device; or, One or more of the default conditions.

10. The method according to claim 8 or 9, characterized in that The CHO configuration includes a first indication, where the first indication is used to instruct the terminal to determine whether the first cell exists according to cells and / or handover conditions in the CHO configuration after determining that the link failure will occur.

11. The method according to any one of claims 6 to 10, characterized in that The first condition includes: A radio signal measurement result of the cell is higher than a first threshold, where the radio signal measurement result includes at least one of the following: Reference signal received power RSRP; Reference signal received quality RSRQ; Signal to Interference and Noise Ratio SINR.

12. The method according to claim 11, characterized in that The first threshold is configured by the network device or specified by the protocol.

13. The method according to claim 11 or 12, characterized in that The determining whether the second cell meets the first condition includes: Whether the second cell meets the first condition is determined based on a radio signal measurement result of the second cell measured after determining that the link failure will occur.

14. The method according to claim 11 or 12, characterized in that The determining whether the second cell meets the first condition includes: Whether the second cell meets the first condition is determined based on a radio signal measurement result of the second cell obtained before or simultaneously with determining that the link failure will occur.

15. The method according to any one of claims 1 to 14, characterized in that Before determining that a link failure will occur according to the first information, the method further includes: receiving a second instruction sent by the network device; Determine, according to the second indication, whether to allow the terminal to determine, according to the first information, whether the link failure will occur.

16. A communication method, characterized in that: Executed by a network device, the method includes: A second indication is sent to the terminal, where the second indication is used to instruct the terminal to perform a corresponding link failure operation when it is determined that a link failure will occur according to the first information predicted for the wireless link.

17. The method according to claim 16, characterized in that The link failure includes cell handover failure and / or radio link failure.

18. The method according to claim 16 or 17, characterized in that The link failure operation includes at least one of the following: Cell switching; Radio Resource Control (RRC) re-establishment.

19. The method according to claim 18, characterized in that The second indication is used to instruct the terminal to initiate a cell handover to the first cell if it is determined that there is a first cell, and the first cell is a cell that meets the first condition.

20. The method according to claim 18, wherein The second indication is used to instruct the terminal to trigger RRC re-establishment if it is determined that the first cell does not exist, and the first cell is a cell that meets the first condition.

21. The method according to claim 19 or 20, characterized in that The first cell is a cell that meets the first condition and is determined from among the second cells by the terminal after determining that the link failure will occur.

22. The method according to claim 21, characterized in that The method further comprises: Sending a condition-based handover CHO configuration to the terminal, the second cell including the CHO configuration Community.

23. The method according to claim 22, characterized in that The first condition comprises a handover condition in the CHO configuration.

24. The method according to claim 23, wherein The CHO configuration includes a first indication, where the first indication is used to instruct the terminal to determine whether the first cell exists according to cells and / or handover conditions in the CHO configuration after determining that the link failure will occur.

25. The method according to any one of claims 16 to 22, characterized in that The method further comprises: A third indication is sent to the terminal, where the third indication is used to indicate a specific condition, and the specific condition is used by the terminal to determine the first condition.

26. The method according to any one of claims 16 to 25, characterized in that The first condition includes: A radio signal measurement result of the cell is higher than a first threshold, where the radio signal measurement result includes at least one of the following: Reference signal received power RSRP; Reference signal received quality RSRQ; Signal to Interference and Noise Ratio SINR.

27. A terminal, characterized in that: include: A processing module, configured to obtain first information on wireless link prediction; It is determined that a link failure will occur based on the first information, and a corresponding link failure operation is performed.

28. A network device, characterized in that: include: The transceiver module is used to send a second indication to the terminal, where the second indication is used to instruct the terminal to perform a corresponding link failure operation when it is determined that a link failure will occur according to the first information predicted for the wireless link.

29. A terminal, characterized in that: include: one or more processors; A memory coupled to the processor, wherein the memory stores executable instructions, and when the executable instructions are executed by the processor, the terminal executes the communication method according to any one of claims 1 to 15.

30. A network device, characterized in that: include: one or more processors; A memory coupled to the processor, wherein the memory stores executable instructions, and when the executable instructions are executed by the processor, the network device executes the communication method according to any one of claims 16 to 26.

31. A communication system, characterized in that: The invention comprises a terminal and a network device, wherein the terminal is configured to implement the communication method according to any one of claims 1 to 15, and the network device is configured to implement the communication method according to any one of claims 16 to 26.

32. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the communication method according to any one of claims 1 to 26.

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