Link recovery method, terminal, communication system, and storage medium

Abstract

The present disclosure relates to a link recovery method, a terminal, a communication system, and a storage medium. The method comprises: when a radio link of a terminal fails, the terminal determines, on the basis of a prediction result, whether to hand over to a target cell, the target cell being a cell in which link recovery is performed. According to the present disclosure, a terminal determines, on a prediction result, whether to hand over to a target cell, preventing the terminal from initiating a handover process to the cell for which a predicted handover result indicates a failure, thereby improving the probability of successful cell handover of the terminal.

Description

Link recovery method, terminal, communication system and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a link recovery method, a terminal, 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 AI models, which can then be used to predict events. In many fields, AI models trained by machine learning can achieve relatively accurate predictions.

[0003] Summary of the Invention

[0004] How to improve the success probability of cell switching in a terminal.

[0005] The embodiments of the present disclosure provide a link recovery method, a terminal, a communication system, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a link recovery method is proposed, comprising: in the event of a terminal wireless link failure, the terminal determines whether to switch to a target cell based on a prediction result, the target cell being a cell for link recovery.

[0007] According to a second aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: a processing module for determining whether to switch to a target cell based on a prediction result when a wireless link fails, the target cell being a cell for link recovery.

[0008] According to a third aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; wherein the terminal is configured to execute the first aspect and any one of the link recovery methods in the first aspect.

[0009] According to a fourth aspect of an embodiment of the present disclosure, a communication system is proposed, including a terminal, wherein the terminal is configured to implement the first aspect and any one of the link recovery methods in the first aspect.

[0010] According to a fifth 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 link recovery method as in the first aspect and any one of the first aspects.

[0011] According to a sixth aspect of an embodiment of the present disclosure, a computer program product is proposed, comprising a computer program. When the computer program runs on a communication device, the communication device executes the link recovery method as in the first aspect and any one of the first aspects.

[0012] The present disclosure allows the terminal to determine whether to switch to the target cell based on the prediction result, thereby avoiding the terminal initiating a handover process to a cell where the predicted handover result fails, thereby increasing the probability of successful cell handover of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] 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.

[0014] FIG1 is a schematic diagram showing a communication system architecture according to an embodiment of the present disclosure.

[0015] FIG2 is an interactive diagram illustrating a link recovery method according to an embodiment of the present disclosure.

[0016] FIG3A is a schematic flow chart of a link recovery method according to an embodiment of the present disclosure.

[0017] FIG3B is a flow chart illustrating a link recovery method according to an embodiment of the present disclosure.

[0018] FIG4 is a schematic flow chart of a link recovery method selection method according to an embodiment of the present disclosure.

[0019] FIG5A is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure.

[0020] FIG5B is a schematic diagram of the structure of the network device proposed in an embodiment of the present disclosure.

[0021] FIG6A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure.

[0022] FIG6B is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] The embodiments of the present disclosure provide a link recovery method, a terminal, a communication system, and a storage medium.

[0024] In a first aspect, an embodiment of the present disclosure proposes a link recovery method, which includes: when a terminal wireless link fails, the terminal determines whether to switch to a target cell based on a prediction result, and the target cell is a cell for link recovery.

[0025] In the above embodiment, when the radio link fails, the terminal determines whether to switch to the target cell based on the prediction result, thereby saving corresponding resource overhead.

[0026] In combination with some embodiments of the first aspect, in some embodiments, the terminal determines whether to switch to the target cell based on the prediction result, including: when the prediction result indicates that the terminal can switch successfully, the terminal switches to the target cell; when the prediction result indicates that the terminal cannot switch successfully, the terminal does not switch to the target cell.

[0027] In the above embodiment, handover to a cell with a successful prediction result is determined based on the prediction result, and handover to a cell with a failed prediction result is not performed, thereby avoiding cell handover to a cell with a failed prediction result and causing corresponding resource overhead.

[0028] In combination with some embodiments of the first aspect, in some embodiments, when the measurement result indicates that the terminal successfully switches to the performance parameter of the target cell, if the performance parameter value represented by the prediction result is greater than or equal to the first numerical threshold, then the prediction result indicates that the terminal can successfully switch.

[0029] In the above embodiment, it is clarified that when the prediction result output by the AI ​​model indicates that the terminal successfully switches cells, the size relationship between the prediction result and the preset corresponds to whether the terminal successfully switches cells.

[0030] In conjunction with some embodiments of the first aspect, in some embodiments, when the prediction result indicates a performance parameter of a failure of the terminal to switch to a cell,

[0031] If the performance parameter value represented by the prediction result is greater than or equal to the second numerical threshold, the prediction result indicates that the terminal cannot be successfully switched.

[0032] In the above embodiment, it is clarified that when the prediction result output by the AI ​​model indicates that the terminal fails to switch cells, the size relationship between the prediction result and the preset corresponds to whether the terminal successfully switches cells.

[0033] In combination with some embodiments of the first aspect, in some embodiments, the wireless link failure includes at least one of the following: the terminal fails to perform cell switching; the wireless link failure of the terminal; the cell switching failure of the terminal is predicted based on AI; the wireless link failure of the terminal is predicted based on AI.

[0034] In combination with some embodiments of the first aspect, in some embodiments, the target cell includes at least one of the following: a target cell indicated based on a CHO command; a target cell indicated based on an LTM configuration.

[0035] In combination with some embodiments of the first aspect, in some embodiments, the target cell meets a radio channel measurement condition, and the radio channel measurement condition is determined based on a network device or based on a protocol.

[0036] In combination with some embodiments of the first aspect, in some embodiments, the target cell is a cell determined by the terminal through cell selection.

[0037] In a second aspect, a terminal is provided, and the method includes: a processing module, which is used to determine whether to switch to a target cell based on a prediction result when a wireless link fails, and the target cell is a cell for link recovery.

[0038] In combination with some embodiments of the second aspect, in some embodiments, the processing module determines whether to switch to the target cell based on the prediction result in the following manner: when the prediction result indicates that the terminal can switch successfully, the terminal switches to the target cell; when the prediction result indicates that the terminal cannot switch successfully, the terminal does not switch to the target cell.

[0039] In combination with some embodiments of the second aspect, in some embodiments, when the prediction result represents the performance parameters of the terminal successfully switching to the target cell, if the performance parameter value represented by the prediction result is greater than or equal to the first numerical threshold, then the prediction result indicates that the terminal can successfully switch.

[0040] In combination with some embodiments of the second aspect, in some embodiments, when the prediction result represents the performance parameter of the terminal's failure to switch to the cell, if the performance parameter value represented by the prediction result is greater than or equal to the second numerical threshold, then the prediction result indicates that the terminal cannot switch successfully.

[0041] In combination with some embodiments of the second aspect, in some embodiments, the wireless link failure includes at least one of the following: the terminal fails to perform cell switching; the wireless link failure of the terminal; the terminal fails to perform cell switching based on AI; the terminal fails to perform wireless link based on AI.

[0042] In combination with some embodiments of the second aspect, in some embodiments, the target cell includes at least one of the following: a target cell indicated based on a CHO command; a target cell indicated based on an LTM configuration.

[0043] In combination with some embodiments of the second aspect, in some embodiments, the target cell meets a radio channel measurement condition, and the radio channel measurement condition is determined based on a network device or based on a protocol.

[0044] In combination with some embodiments of the second aspect, in some embodiments, the target cell is a cell determined by the terminal through cell selection.

[0045] In a third aspect, a terminal is provided, and the method includes: one or more processors; wherein the terminal is used to execute the first aspect and any one of the link recovery methods in the first aspect.

[0046] In a fourth aspect, a network device is provided, including: a transceiver module for sending first information to a terminal, the first information being used to configure a first parameter so that the terminal can determine whether to switch to a target cell based on a prediction result when the terminal wireless link fails, the target cell being a cell for link recovery.

[0047] In a fifth aspect, a communication system is provided, comprising a terminal, wherein the terminal is configured to implement the first aspect and any one of the link recovery methods in the first aspect.

[0048] In a sixth aspect, a storage medium is provided, wherein the storage medium stores instructions. When the instructions are executed on a communication device, the communication device executes a link recovery method as in the first aspect and any one of the first aspects.

[0049] In a seventh 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 manner of the first aspect or the second aspect.

[0050] In an eighth 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 manner of the first aspect.

[0051] In a ninth aspect, an embodiment of the present disclosure provides a chip or a chip system, which includes a processing circuit configured to execute the method described in the optional implementation of the first aspect.

[0052] It is understood that the terminal, access network device, first network element, other network elements, core network device, communication system, storage medium, program product, computer program, chip, or chip system involved in each embodiment of the present disclosure 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.

[0053] The present disclosure provides communication methods, devices, equipment, and storage media. In some embodiments, the terms "communication method," "information processing method," and "link recovery method" are interchangeable; the terms "communication device," "information processing device," and "link recovery device" are interchangeable; and the terms "information processing system," "communication system," and "communication system" are interchangeable.

[0054] 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.

[0055] In each embodiment of the present disclosure, unless otherwise specified or provided for, the terms and / or descriptions between the embodiments are consistent and may be referenced by each other. The technical environments in different embodiments may be combined to form new embodiments based on their inherent logical relationships.

[0056] 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.

[0057] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "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.

[0058] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0059] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0060] 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.

[0061] 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.

[0062] 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 example, if the description object is "information", then the "first information" and "the performance of each AI model" can be the same information or different information, and their contents can be the same or different.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0067] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0068] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or 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)", etc.

[0069] In some embodiments, "terminal" or "terminal device" may be referred to as "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.

[0070] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0071] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0072] 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.

[0073] FIG1 is a schematic diagram showing a communication system architecture according to an embodiment of the present disclosure.

[0074] As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 .

[0075] 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.

[0076] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0077] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a 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.

[0078] 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.

[0079] 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.

[0080] In some embodiments, a core network device may be a device comprising one or more network elements, or may be multiple devices or device groups, each comprising all or part of the one or more network elements. A network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0081] 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.

[0082] 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.

[0083] 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).

[0084] 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 AI models, which can then be used to predict events. In many fields, AI models trained by machine learning can achieve relatively accurate predictions.

[0085] In some embodiments, such as in the field of communications technology, the AI ​​model is trained using data related to cell switching so that the AI ​​model can predict the possible results of switching to a certain cell based on the network environment of the terminal (for example, the probability of successful switching, the probability of failed switching, or the probability of wireless link failure, etc.).

[0086] In some embodiments, after the terminal initiates a handover to the target cell, it starts a corresponding timer (eg, T304 timer, etc.), disconnects from the source cell, synchronizes with the target cell, and then accesses the target cell through a random access process.

[0087] If the target cell is successfully accessed before the corresponding timer expires, the handover is successful and the corresponding timer function is stopped. If the corresponding timer expires, it means the handover has failed.

[0088] For example, after receiving N310 consecutive out-of-sync indications at the Radio Resource Control (RRC) layer, the terminal starts a corresponding timer. If the timer expires, a Radio Link Failure (RLF) is triggered. If N311 consecutive in-sync indications are received while the timer is running, the timer function is stopped.

[0089] In some embodiments, in order to improve the robustness of handover, conditional handover (CHO) is proposed in the fifth generation mobile communication technology (5G), that is, the network can configure a CHO handover command for the terminal in advance. For example, it includes the handover target cell configuration and the handover triggering condition. Among them, the handover target cell configuration is the reconfiguration information provided by the target cell. The terminal stores the received CHO handover command, performs radio resource management (RRM) measurement, and determines whether the handover condition is met. If the handover condition is met, the terminal performs the handover.

[0090] It is understood that the terminal stores the CHO handover command. In the event of a link failure (including, for example, a handover failure or a radio link failure) at the terminal, the terminal triggers a reestablishment (e.g., an RRC reestablishment) and performs cell selection. If the selected cell is a conditional handover target cell, the terminal may attempt a conditional handover to that cell again.

[0091] However, after the terminal selects a cell during the reconstruction process, if the selected cell is a conditional handover target cell, the terminal will switch again. If the handover fails again during the handover process, additional services will be interrupted, thereby affecting the user experience.

[0092] Based on this, an embodiment of the present disclosure proposes a link recovery method for reducing the possibility of service interruption of a terminal due to link failure.

[0093] FIG2 is an interactive diagram of a link recovery method according to an embodiment of the present disclosure. As shown in FIG2 , the present disclosure embodiment relates to a link recovery method for a communication system 100, the method comprising:

[0094] Step S2101 , the network device 102 sends first information to the terminal 101 .

[0095] In some embodiments, terminal 101 obtains first information.

[0096] In some embodiments, the first information is configuration information, which is used to configure wireless channel measurement conditions for terminal 101.

[0097] It is understandable that before switching to the target cell, the terminal 101 needs to determine whether the cell can be used for link recovery. Therefore, it is necessary to perform corresponding screening and judgment from the acquired cells to determine a cell that can be used for link recovery among multiple cells.

[0098] In some embodiments, the network device 102 configures the wireless channel measurement condition to the terminal 101 based on the first information, so that the terminal 101 can determine a target cell that meets the condition based on the wireless channel measurement condition.

[0099] It is understandable that, in the event of a radio link failure, terminal 101 may switch to m cells. However, terminal 101 performs radio channel measurement on the m cells and finds, based on the radio channel measurement results, that only n cells meet the radio channel measurement conditions, where m is an integer greater than or equal to 1, n is an integer greater than or equal to 1, and n is less than m. Then, terminal 101 determines a cell capable of link recovery from the n cells that meet the channel conditions.

[0100] The measurement condition may include, for example, determining that a cell is a target cell if the cell's radio channel measurement result is higher than a corresponding threshold. The cell's channel state measurement result may include, for example, at least one of the following: Reference Signal Received Power (RSRP); Reference Signal Received Quality (RSRQ); or Signal-to-noise and Interference Ratio (SINR). If the radio channel measurement result is higher than a corresponding threshold, for example, if the RSRP measurement value is greater than or equal to an RSRP threshold, the cell corresponding to the RSRP measurement value greater than or equal to the RSRP threshold may be a cell undergoing link recovery.

[0101] In some embodiments, the wireless channel measurement condition may also be determined based on a protocol.

[0102] In some embodiments, the first information is configuration information, which is used to configure the first parameter to the terminal 101.

[0103] For example, the network device 102 configures threshold parameters (such as a predicted switching success probability threshold, a predicted switching failure probability threshold, etc.) to the terminal 101, and the terminal compares the obtained results (such as measurement results, and / or AI prediction results, etc.) with the corresponding thresholds to determine the target cell that meets the conditions.

[0104] Exemplarily, the first parameter is, for example, a predicted switching success probability threshold. If the probability of successful switching to cell A predicted by the terminal 101 based on AI is greater than or equal to the switching success probability threshold, cell A is regarded as a cell capable of link recovery.

[0105] Exemplarily, the first parameter is, for example, a probability threshold of switching failure. If the probability of switching failure to cell A is less than or equal to the probability threshold of switching failure based on AI prediction, the terminal 101 regards cell A as a cell capable of link recovery.

[0106] It is understood that, following the above embodiment, after the terminal 101 determines n cells that meet the channel status requirements, it then uses AI to perform corresponding predictions on the n cells to obtain prediction results corresponding to each cell. The prediction results are then compared with corresponding thresholds to determine the target cell for link recovery.

[0107] In some embodiments, the target cell includes: a target cell indicated based on a CHO command, and / or based on Layer 1 or Layer 2 Triggered Mobility (L1 / L2 Triggered Mobility, LTM).

[0108] 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.

[0109] 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.

[0110] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0111] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0112] Step S2102: Terminal 101 switches to the target cell based on the prediction result.

[0113] In some embodiments, when the wireless link of terminal 101 fails, terminal 101 switches to a target cell based on a prediction result, where the target cell is a cell that performs link recovery.

[0114] Optionally, the wireless link failure includes, for example, at least one of the following: the terminal fails to perform cell switching; the terminal's wireless link fails; AI-based prediction of the terminal's cell switching failure; AI-based prediction of the terminal's wireless link failure, etc.

[0115] It is understandable that terminal 101 performs target cell handover in the event of a radio link failure. That is, in this case, terminal 101 has no communication association with the network device. Therefore, in this case, terminal 101 performs handover to the target cell based on the prediction result. Terminal 101 itself performs handover to the target cell based on the prediction result (for example, terminal 101 performs AI prediction to obtain the prediction result), and the network device does not need to be involved in the process.

[0116] It is understandable that the target cell is a cell determined by the terminal 101 through cell selection. The terminal 101 can select the cell based on, for example, the radio channel measurement result of the cell and / or the channel prediction result of the cell in the future.

[0117] It is understandable that the wireless channel measurement result has been described in the above-mentioned embodiment related to step S2101 and will not be repeated here.

[0118] The channel state prediction result for the cell in the future is, for example, obtained by terminal 101 using a corresponding AI model to predict the target cell. The channel state prediction result for the cell in the future may include, for example, at least one of the following: whether terminal 101 will experience a radio link failure in the target cell; the duration of terminal 101's stay in the target cell; or the target cell's future channel state.

[0119] It is understandable that the prediction results of the AI ​​model may have various output forms (or meanings). For example, the prediction results may represent performance parameters of the terminal 101 successfully switching to the target cell (e.g., the probability of successful switching or the confidence value of successful switching), or they may represent performance parameters of the terminal 101 failing to switch to the target cell (e.g., the probability of handover failure or the confidence value of handover failure).

[0120] It is understandable that the prediction results may represent different results, and the result corresponding to whether the terminal 101 successfully switches the cell may include at least one of the following -1) to -4):

[0121] -1) When the prediction result indicates that the terminal 101 successfully switches to the performance parameter of the target cell, if the prediction result is greater than or equal to the first numerical threshold, the terminal 101 successfully switches to the target cell.

[0122] -2) When the prediction result indicates that the terminal 101 successfully switches to the performance parameter of the target cell, if the prediction result is less than or equal to the first numerical threshold, the terminal 101 fails to switch to the target cell.

[0123] -3) When the prediction result indicates a performance parameter indicating that the terminal 101 fails to switch to the target cell, if the prediction result is greater than or equal to the second numerical threshold, the terminal 101 fails to switch to the target cell.

[0124] -4) When the prediction result indicates a performance parameter indicating that the terminal 101 fails to switch to the target cell, if the prediction result is less than or equal to the second numerical threshold, the terminal 101 successfully switches to the target cell.

[0125] It should be noted that the first numerical threshold and the second numerical threshold mentioned in -1) to -4) can be configured by the network device 102 or determined based on the protocol.

[0126] It is understandable that, depending on the content represented by the prediction result, the terminal 101 determines to switch to the target cell based on the prediction result, which may include two cases: a) or b):

[0127] -a) The prediction result indicates that the terminal 101 can successfully switch.

[0128] -b) The prediction result indicates that the terminal 101 cannot be successfully switched.

[0129] For -a), the terminal 101 switches to the target cell.

[0130] It can be understood that, continuing with the above embodiment, when the prediction result is -1) and / or -4), based on the prediction result, the result of terminal 101 switching to the target cell is successful, then terminal 101 switches to the target cell, and the wireless link of terminal 101 can be restored.

[0131] For -b), the terminal 101 does not switch to the target cell.

[0132] It is understandable that, following the above embodiment, when the prediction result is -2) and / or -3), based on the prediction result, the result of the terminal 101 switching to the target cell is a failure, then the terminal 101 will no longer initiate the switching process to the target cell.

[0133] Optionally, when the prediction result is -2) and / or -3), the terminal 101 no longer initiates a handover process to the target cell, and may initiate a reestablishment process to another cell. A cell that meets the reestablishment conditions is determined among the other cells, and a connection is established with the cell as the new target cell (e.g., based on an RRC reestablishment process, etc.), thereby avoiding repeated failed handover processes and causing resource overhead.

[0134] Optionally, when the prediction result is -2) and / or -3), the terminal 101 no longer initiates a switching process to the target cell, and may also not initiate a reconstruction process to other cells (for example, when there are no cells around the terminal 101 that meet the reconstruction conditions, the terminal 101 does not initiate a reconstruction process to other cells and enters an idle state), thereby avoiding repeated switching failures and overhead caused by link reconstruction failures.

[0135] It should be noted that the reconstruction conditions can be based on network configuration or default rule configuration (such as relevant protocols, etc.). Exemplarily, the reconstruction conditions are, for example, at least one of the following: the terminal will not experience radio link failure in the target cell; the target cell will not experience radio link failure within a first time period in the future, and the first time period is greater than or equal to the first time period threshold; the terminal's stay time in the target cell is greater than or equal to the second time period threshold; the target cell's channel state in the future is higher than the first state threshold. Among them, the first time period threshold, the second time period threshold and other related parameters can be based on network configuration or default rule configuration (such as relevant protocols, etc.).

[0136] 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.

[0137] In some embodiments, the terms "component carrier (CC)", "cell", "frequency carrier", "carrier frequency" and the like can be used interchangeably.

[0138] 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.

[0139] The link recovery method involved in the embodiments of the present disclosure may include at least one of steps S2101 and S2102. For example, step S2101 may be implemented as an independent embodiment, step S2102 may be implemented as an independent embodiment, and step S2101 + step S2102 may be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0140] In some embodiments, step S2101 and step S2102 may be executed in an interchanged order or simultaneously.

[0141] In some embodiments, step S2101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0142] FIG3A is a flow chart of a link recovery method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a link recovery method, which includes:

[0143] Step S3101, obtain first information.

[0144] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0145] In some embodiments, the terminal 101 receives first information sent by the network device 102, where the first information is used to configure the first parameter, but is not limited thereto. The terminal 101 may also receive first information sent by other entities.

[0146] In some embodiments, terminal 101 obtains first information specified by a protocol.

[0147] In some embodiments, terminal 101 obtains the first information from upper layer(s).

[0148] In some embodiments, the terminal 101 performs processing to obtain the first information.

[0149] In some embodiments, step S3101 is omitted, and the terminal 101 autonomously implements the function indicated by the first parameter, or the above function is default or by default.

[0150] Step S3102: The terminal switches to the target cell based on the prediction result.

[0151] The optional implementation of step S3102 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0152] The link recovery method involved in the embodiments of the present disclosure may include at least one of steps S3101 and S3102. For example, step S3101 may be implemented as an independent embodiment, step S3102 may be implemented as an independent embodiment, and step S3101 + step S3102 may be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0153] In some embodiments, step S3101 and step S3102 may be executed in an interchanged order or simultaneously.

[0154] In some embodiments, step S3101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0155] FIG3B is a flow chart of a link recovery method according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a link recovery method, which includes:

[0156] Step S3201: The terminal switches to the target cell based on the prediction result.

[0157] In some embodiments, when a wireless link of a terminal fails, the terminal switches to a target cell based on a prediction result, where the target cell is a cell performing link recovery.

[0158] In some embodiments, the terminal determines whether to switch to the target cell based on the prediction result, including: when the prediction result indicates that the terminal can switch successfully, the terminal switches to the target cell; when the prediction result indicates that the terminal cannot switch successfully, the terminal rebuilds to the target cell, wherein the prediction result is a prediction of the possible results after the terminal switches to the target cell, and the prediction method can be executed by the terminal.

[0159] In some embodiments, when the prediction result indicates that the terminal successfully switches to the performance parameter of the target cell, and when the performance parameter value indicated by the prediction result is greater than or equal to the first numerical threshold, the prediction result indicates that the terminal can successfully switch.

[0160] In some embodiments, when the prediction result indicates a performance parameter for a terminal failing to switch to a cell, and when the performance parameter value indicated by the prediction result is greater than or equal to a second numerical threshold, the prediction result indicates that the terminal cannot successfully switch.

[0161] In some embodiments, the wireless link failure includes at least one of the following: the terminal fails to perform cell switching; the terminal's wireless link fails; the terminal fails to perform cell switching based on AI prediction; the terminal's wireless link fails based on AI prediction.

[0162] In some embodiments, the target cell includes at least one of the following: a target cell indicated based on a CHO command; a target cell indicated based on a layer LTM configuration.

[0163] In some embodiments, the target cell meets a radio channel measurement condition, and the radio channel measurement condition is determined based on a network device or a protocol.

[0164] Optionally, the wireless channel measurement condition is that the signal strength or signal quality of the final target cell reaches a certain threshold, and the wireless channel measurement condition is used to ensure that the terminal can accurately measure the performance parameters of the target cell.

[0165] In some embodiments, the target cell is a cell determined by the terminal through cell selection.

[0166] FIG4 is a flow chart of a link recovery method selection method according to an embodiment of the present disclosure. As shown in FIG4 , the embodiment of the present disclosure relates to a link recovery method, which includes:

[0167] Step S4101: Send first information, where the first information is used to configure a first parameter.

[0168] The optional implementation of step S4101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0169] In some embodiments, the network device configures a first parameter for the terminal so that the terminal determines whether to switch to the target cell based on the prediction result.

[0170] In some embodiments, the terminal determines whether to switch to the target cell based on the prediction result, including: when the prediction result indicates that the terminal can switch successfully, the terminal switches to the target cell; when the prediction result indicates that the terminal cannot switch successfully, the terminal rebuilds to the target cell, wherein the prediction result is a prediction of the possible results after the terminal switches to the target cell, and the prediction method can be executed by the terminal.

[0171] In some embodiments, when the prediction result indicates that the terminal successfully switches to the performance parameter of the target cell, and when the performance parameter value indicated by the prediction result is greater than or equal to the first numerical threshold, the prediction result indicates that the terminal can successfully switch.

[0172] In some embodiments, when the prediction result indicates a performance parameter for a terminal failing to switch to a cell, and when the performance parameter value indicated by the prediction result is greater than or equal to a second numerical threshold, the prediction result indicates that the terminal cannot successfully switch.

[0173] In some embodiments, the wireless link failure includes at least one of the following: the terminal fails to perform cell switching; the terminal's wireless link fails; the terminal fails to perform cell switching based on AI prediction; the terminal's wireless link fails based on AI prediction.

[0174] In some embodiments, the target cell includes at least one of the following: a target cell indicated based on a CHO command; a target cell indicated based on a layer LTM configuration.

[0175] In some embodiments, the target cell meets a radio channel measurement condition, and the radio channel measurement condition is determined based on a network device or a protocol.

[0176] Optionally, the wireless channel measurement condition is that the signal strength or signal quality of the final target cell reaches a certain threshold, and the wireless channel measurement condition is used to ensure that the terminal can accurately measure the performance parameters of the target cell.

[0177] In some embodiments, the embodiments of the present disclosure further provide a link recovery method for reducing the probability of service interruption of a terminal due to a cell handover failure.

[0178] In some embodiments, after the UE triggers a link failure, it switches to a first target cell, where the first target cell is a link recovery target cell configured by the network.

[0179] Optionally, the first target cell is a cell selected by the UE after performing cell selection.

[0180] In some embodiments, the link failure comprises a handover failure or a radio link failure or a predicted handover failure or a predicted radio link failure.

[0181] Optionally, the prediction results are provided by AI.

[0182] In some embodiments, the link recovery target cell may be a handover target cell indicated by a CHO or a handover target cell indicated by a LTM.

[0183] Optionally, the configuration of the target cell is provided by the network and may be carried in the CHO handover command.

[0184] In some embodiments, the first target cell needs to meet a preset condition, which is provided by the network or specified by a protocol.

[0185] Optionally, the preset condition may be that the wireless channel measurement result is higher than a certain threshold.

[0186] In some embodiments, the first target cell is a cell to which the terminal predicts that handover to the first target cell will be successful.

[0187] Optionally, the terminal predicts that the success probability or confidence of handover to the first target cell is greater than a preset value, and determines that handover failure will not occur. The preset value may be provided by the network or specified by the protocol.

[0188] In some embodiments, the first target cell is a cell to which the terminal predicts that handover to the first target cell will not fail.

[0189] Optionally, the terminal predicts that the probability or confidence of handover to the first target cell is greater than a preset value, and determines that handover failure will occur. The preset value may be provided by the network or specified by the protocol.

[0190] 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.

[0191] 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.

[0192] 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.

[0193] 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.

[0194] Figure 5A is a structural diagram of the terminal proposed in an embodiment of the present disclosure. As shown in Figure 5A, the terminal 5100 may include: at least one of a processing module 5101, a transceiver module 5102, etc. In some embodiments, the above-mentioned processing module is used to determine whether to switch to the target cell based on the prediction result when the terminal wireless link fails, and the target cell is the cell for link recovery. Optionally, the above-mentioned processing module is used to execute at least one of the communication processing steps (such as step S2102, but not limited to this) performed by the terminal in any of the above methods, which will not be repeated here. Optionally, the above-mentioned processing module is used to execute at least one of the sending and / or receiving steps (such as step S2101, but not limited to this) performed by the terminal in any of the above methods, which will not be repeated here.

[0195] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0196] 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.

[0197] In some embodiments, the processing module 5101 determines whether to switch to the target cell based on the prediction result in the following manner, including: when the prediction result indicates that the terminal can switch successfully, the terminal switches to the target cell; when the prediction result indicates that the terminal cannot switch successfully, the terminal does not switch to the target cell, wherein the prediction result is obtained by the terminal predicting the target cell.

[0198] In some embodiments, when the prediction result indicates that the terminal successfully switches to the performance parameter of the target cell, and when the performance parameter value indicated by the prediction result is greater than or equal to the first numerical threshold, the prediction result indicates that the terminal can successfully switch.

[0199] In some embodiments, when the prediction result indicates a performance parameter for a terminal failing to switch to a cell, and when the performance parameter value indicated by the prediction result is greater than or equal to a second numerical threshold, the prediction result indicates that the terminal cannot successfully switch.

[0200] In some embodiments, the wireless link failure includes at least one of the following: the terminal fails to perform cell switching; the terminal's wireless link fails; the terminal predicts based on AI that the terminal fails to perform cell switching; the terminal's wireless link fails based on AI.

[0201] In some embodiments, the target cell includes at least one of the following: a target cell indicated based on a CHO command; a target cell indicated based on an LTM configuration.

[0202] In some embodiments, the target cell meets a radio channel measurement condition, and the radio channel measurement condition is determined based on a network device or a protocol.

[0203] In some embodiments, the target cell is a cell determined by the terminal through cell selection.

[0204] Figure 5B is a schematic diagram of the structure of a network device according to an embodiment of the present disclosure. As shown in Figure 5B, network device 5200 may include: a transceiver module 5201. In some embodiments, the transceiver module is configured to transmit first information, which is used to configure a first parameter. Optionally, the transceiver module is configured to perform at least one of the communication generation or reception steps (e.g., step S2101, but not limited thereto) performed by the network device in any of the above methods, and will not be further described herein.

[0205] In some embodiments, the network device configures a first parameter for the terminal so that the terminal determines whether to switch to the target cell based on the prediction result.

[0206] In some embodiments, the terminal determines whether to switch to the target cell based on the prediction result, including: when the prediction result indicates that the terminal can switch successfully, the terminal switches to the target cell; when the prediction result indicates that the terminal cannot switch successfully, the terminal does not switch to the target cell, wherein the prediction result is obtained by the terminal predicting the target cell.

[0207] In some embodiments, when the prediction result indicates that the terminal successfully switches to the performance parameter of the target cell, and when the performance parameter value indicated by the prediction result is greater than or equal to the first numerical threshold, the prediction result indicates that the terminal can successfully switch.

[0208] In some embodiments, when the prediction result indicates a performance parameter for a terminal failing to switch to a cell, and when the performance parameter value indicated by the prediction result is greater than or equal to a second numerical threshold, the prediction result indicates that the terminal cannot successfully switch.

[0209] In some embodiments, the wireless link failure includes at least one of the following: the terminal fails to perform cell switching; the terminal's wireless link fails; the terminal fails to perform cell switching based on AI prediction; the terminal's wireless link fails based on AI prediction.

[0210] In some embodiments, the target cell includes at least one of the following: a target cell indicated based on a CHO command; a target cell indicated based on a layer LTM configuration.

[0211] In some embodiments, the target cell meets a radio channel measurement condition, and the radio channel measurement condition is determined based on a network device or a protocol.

[0212] Figure 6A is a schematic diagram of the structure of a communication device 6100 proposed in an embodiment of the present disclosure. Communication device 6100 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 6100 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.

[0213] As shown in Figure 6A, the communication device 6100 includes one or more processors 6101. The processor 6101 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 6100 is used to perform any of the above methods. Optionally, one or more processors 6101 are used to call instructions to enable the communication device 6100 to perform any of the above methods.

[0214] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps such as sending and / or receiving in the above method (e.g., step S2102, but not limited thereto), and the processor 6101 performs at least one of the other steps (e.g., step S2101, 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.

[0215] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Alternatively, all or part of the memories 6103 may be located outside the communication device 6100. In alternative embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuits 6104 are connected to the memories 6103 and may be configured to receive data from the memories 6103 or other devices, or to send data to the memories 6103 or other devices. For example, the interface circuits 6104 may read data stored in the memories 6103 and send the data to the processor 6101.

[0216] The communication device 6100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited to FIG6A. 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 and 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.

[0217] 6B is a schematic diagram of the structure of a chip 6200 according to an embodiment of the present disclosure. If the communication device 6100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 6200 shown in FIG6B , but the present disclosure is not limited thereto.

[0218] The chip 6200 includes one or more processors 6201. The chip 6200 is configured to execute any of the above methods.

[0219] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data. Alternatively, all or part of memory 6203 may be located external to chip 6200. Optionally, interface circuit 6202 is connected to memory 6203 and may be used to receive data from memory 6203 or other devices, or may be used to send data to memory 6203 or other devices. For example, interface circuit 6202 may read data stored in memory 6203 and send the data to processor 6201.

[0220] In some embodiments, the interface circuit 6202 performs at least one of the communication steps (e.g., step S2102, but not limited thereto) in the above method, such as sending and / or receiving. The interface circuit 6202 performing the communication steps (e.g., sending and / or receiving) in the above method, for example, means that the interface circuit 6202 performs data exchange between the processor 6201, the chip 6200, the memory 6203, or the transceiver device. In some embodiments, the processor 6201 performs at least one of the other steps (e.g., step S2101, but not limited thereto).

[0221] 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.

[0222] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 6100, the communication device 6100 executes 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.

[0223] The present disclosure also provides a program product, which, when executed by the communication device 6100, enables the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0224] 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 link recovery method, characterized in that: The method comprises: In the event of a terminal radio link failure, the terminal determines whether to perform handover to a target cell based on a prediction result, where the target cell is a cell performing link recovery.

2. The method according to claim 1, characterized in that The terminal determines whether to switch to the target cell based on the prediction result, including: If the prediction result indicates that the terminal can be successfully handed over, the terminal performs handover to the target cell; If the prediction result indicates that the terminal cannot be successfully handed over, the terminal does not hand over to the target cell.

3. The method according to claim 2, characterized in that The prediction result indicates that the terminal successfully switches to the performance parameter of the target cell. If the performance parameter value represented by the prediction result is greater than or equal to the first numerical threshold, the prediction result indicates that the terminal can be successfully switched.

4. The method according to claim 2, characterized in that In the case where the prediction result indicates a performance parameter of a failure of the terminal to switch to a cell, If the performance parameter value represented by the prediction result is greater than or equal to the second numerical threshold, the prediction result indicates that the terminal cannot be successfully switched.

5. The method according to any one of claims 1 to 4, characterized in that The wireless link failure includes at least one of the following: The terminal fails to perform cell handover; The wireless link of the terminal fails; Predicting based on AI that the terminal fails to perform cell handover; Predicting wireless link failure of the terminal based on AI.

6. The method according to any one of claims 1 to 5, characterized in that The target cell includes at least one of the following: Switch the target cell indicated by the CHO command based on the conditions; Target cell indicated based on Layer 1 or Layer 2 Triggered Mobility LTM configuration.

7. The method according to any one of claims 1 to 6, characterized in that The target cell meets a radio channel measurement condition, where the radio channel measurement condition is determined based on a network device or a protocol.

8. The method according to any one of claims 1 to 7, characterized in that The target cell is a cell determined by the terminal through cell selection.

9. A terminal, characterized in that: include: The processing module is used to determine whether to switch to a target cell based on the prediction result when the wireless link fails, and the target cell is a cell for link recovery.

10. The terminal according to claim 9, characterized in that The processing module determines whether to switch to the target cell based on the prediction result in the following manner: If the prediction result indicates that the terminal can be successfully handed over, the terminal performs handover to the target cell; If the prediction result indicates that the terminal cannot be successfully handed over, the terminal does not hand over to the target cell. The terminal according to claim 10 , wherein: The prediction result indicates that the terminal successfully switches to the performance parameter of the target cell. If the performance parameter value represented by the prediction result is greater than or equal to the first numerical threshold, the prediction result indicates that the terminal can be successfully switched.

12. The terminal according to claim 10, characterized in that In the case where the prediction result indicates a performance parameter of a failure of the terminal to switch to a cell, If the performance parameter value represented by the prediction result is greater than or equal to the second numerical threshold, the prediction result indicates that the terminal cannot be successfully switched.

13. The terminal according to any one of claims 9 to 12, characterized in that: The wireless link failure includes at least one of the following: The terminal fails to perform cell handover; The wireless link of the terminal fails; Predicting based on AI that the terminal fails to perform cell handover; Predicting wireless link failure of the terminal based on AI.

14. The terminal according to any one of claims 9 to 13, characterized in that: The target cell includes at least one of the following: Switch the target cell indicated by the CHO command based on the conditions; Target cell indicated based on Layer 1 or Layer 2 Triggered Mobility LTM configuration.

15. The terminal according to any one of claims 9 to 14, characterized in that: The target cell meets a radio channel measurement condition, where the radio channel measurement condition is determined based on a network device or a protocol.

16. The terminal according to any one of claims 9 to 15, characterized in that: The target cell is a cell determined by the terminal through cell selection.

17. A terminal, characterized in that: include: one or more processors; The processor is configured to execute the link recovery method according to any one of claims 1 to 8.

18. A communication system, characterized in that: The invention comprises a terminal, wherein the terminal is configured to implement the link recovery method according to any one of claims 1 to 8.

19. 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 link recovery method according to any one of claims 1 to 8.

20. A computer program product comprising a computer program, characterized in that When the computer program is executed on a communication device, the communication device is caused to execute the link recovery method according to any one of claims 1 to 8.

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