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WO2025175531A1 - Procédés de communication, terminaux, dispositifs de réseau, système de communication et support de stockage - Google Patents

Procédés de communication, terminaux, dispositifs de réseau, système de communication et support de stockage

Info

Publication number
WO2025175531A1
WO2025175531A1 PCT/CN2024/078171 CN2024078171W WO2025175531A1 WO 2025175531 A1 WO2025175531 A1 WO 2025175531A1 CN 2024078171 W CN2024078171 W CN 2024078171W WO 2025175531 A1 WO2025175531 A1 WO 2025175531A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
terminal
link failure
condition
network device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/078171
Other languages
English (en)
Chinese (zh)
Inventor
杨星
熊艺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Xiaomi Mobile Software Co Ltd
Original Assignee
Beijing Xiaomi Mobile Software Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2024/078171 priority Critical patent/WO2025175531A1/fr
Priority to CN202480014218.4A priority patent/CN120836167A/zh
Publication of WO2025175531A1 publication Critical patent/WO2025175531A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Definitions

  • 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.
  • 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 that can 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 to predict events.
  • AI artificial intelligence
  • the embodiments of the present disclosure provide a communication method, a terminal, a network device, a communication system, and a storage medium.
  • 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.
  • a terminal including:
  • 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.
  • a network device including:
  • a terminal 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.
  • a network device 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.
  • a communication system including 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. method.
  • a storage medium which stores instructions.
  • the communication device executes the communication method described in the first aspect or the second aspect.
  • 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.
  • FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.
  • FIG2 is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure.
  • FIG3A is a flow chart illustrating a communication method according to an embodiment of the present disclosure.
  • FIG3C is a flow chart illustrating a communication method according to an embodiment of the present disclosure.
  • FIG4 is a flow chart showing a communication method according to an embodiment of the present disclosure.
  • FIG5 is an interactive diagram illustrating a communication method according to an embodiment of the present disclosure.
  • FIG8A is a schematic structural diagram of a communication device according to an embodiment of the present disclosure.
  • FIG8B is a schematic structural diagram of a chip according to an embodiment of the present disclosure.
  • the embodiments of the present disclosure provide a communication method, a terminal, a network device, a communication system, and a storage medium.
  • 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.
  • 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.
  • the link failure includes cell handover failure and/or radio link failure.
  • the link failure includes cell handover failure and/or radio link failure.
  • the link failure operation includes at least one of the following:
  • 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.
  • the network of the terminal can be quickly restored and the robustness of the handover can be improved.
  • 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.
  • the network of the terminal can be quickly restored.
  • 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.
  • 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.
  • the second cell is a cell configured by a network device.
  • the terminal 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.
  • the cell configured by the network device includes a cell configured in a condition-based handover (CHO) configuration.
  • 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.
  • 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.
  • the above first condition can ensure the network quality of the terminal after switching to the first cell, and can avoid frequent cell switching.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the first condition includes a switching condition in the CHO configuration.
  • 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.
  • 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.
  • 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:
  • 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.
  • 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.
  • 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.
  • 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.
  • each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined.
  • 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.
  • 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.
  • the terms "at least one of”, “one or more”, “a plurality of”, “multiple”, etc. can be used interchangeably.
  • 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.
  • the description object is "device”
  • 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.
  • 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.
  • terminal 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.
  • the access network device, the core network device, or the network device can be replaced by a terminal.
  • 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.).
  • D2D device-to-device
  • V2X vehicle-to-everything
  • terms such as "uplink” and “downlink” can also be replaced by terms corresponding to communication between terminals (for example, "side”).
  • uplink channels, downlink channels, etc. can be replaced by side channels
  • uplinks, downlinks, etc. can be replaced by side links.
  • obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.
  • data, information, etc. may be obtained with the user's consent.
  • 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.
  • FIG1 is a schematic diagram illustrating an architecture of a communication system according to an embodiment of the present disclosure.
  • the communication system 100 may include a terminal 101 and a network device 102 .
  • the network device 102 may include at least one of an access network device and a core network device.
  • 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 Node B (eNB), a next generation evolved Node B (ng-eNB), a next generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (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.
  • eNB evolved Node B
  • ng-eNB next generation evolved Node B
  • gNB next generation Node B
  • NB node
  • network device 102 is a base station.
  • the base station can be, for example, a macro base station, a micro base station (also known as a small station), a relay station, an access point, a 5G base station or a future base station, a satellite, a Transmitting and Receiving Point (TRP), a Transmitting 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.
  • TRP Transmitting and Receiving Point
  • TP Transmitting Point
  • mobile switching center or other devices that perform base station functions in a communication system, etc.
  • devices that provide wireless communication functions for terminal devices are collectively referred to as network devices or base stations.
  • 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).
  • EPC Evolved Packet Core
  • 5GCN 5G Core Network
  • NGC Next Generation Core
  • the technical solution of the present disclosure may be applicable to the Open RAN architecture.
  • the interfaces between or within the access network devices involved in the embodiments of the present disclosure may become internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.
  • the access network device may be composed of a centralized unit (CU) and a distributed unit (DU), where the CU may also be called a control unit.
  • the CU-DU structure may be used to split the protocol layers of the access network device, with some functions of the protocol layers centrally controlled by the CU, and the remaining functions of some or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.
  • the network will configure the UE to perform measurements, and the network will send a handover request to the target cell based on the measurement results reported by the UE.
  • the network will send a handover command (Reconfiguration with sync) to the UE.
  • the handover command carries the configuration information of a target cell, which may include bearer configuration, MAC (Medium Access Control) configuration, and random access configuration.
  • the UE After receiving the handover command, the UE will synchronize with the target cell, then initiate a random access procedure to access the target cell and start using the carried configuration of the target cell.
  • the UE 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.
  • the UE's RRC (Radio Resource Control) layer upon receiving N310 consecutive out-of-sync indications (this parameter indicates the maximum number of consecutive "out-of-sync" indications that trigger the start of the T310 timer), the UE's RRC (Radio Resource Control) layer starts the T310 timer. If the T310 timer expires, a Radio Link Failure (RLF) is triggered. If, while the T310 timer is running, N311 consecutive in-sync indications are received (this parameter sets the maximum number of consecutive "in-sync” indications required to stop the T310 timer), the T310 timer is stopped.
  • RRC Radio Resource Control
  • 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.
  • the AI model can be used to predict whether wireless link failure or handover failure will occur in the future.
  • 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.
  • 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.
  • 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.
  • the network device sends the second indication to the terminal via a system message and/or an RRC reconfiguration message.
  • 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.
  • Step S201 is an optional step and may not be performed 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.
  • 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.
  • Step S202 Terminal 101 predicts the wireless link and obtains first information.
  • the terminal 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.
  • 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.
  • step S203 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.
  • T304 relevant timer
  • 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.
  • 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.
  • step S203 the terminal 101 determines that a link failure will occur based on the first information, and determines whether a first cell exists.
  • 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.
  • 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.
  • 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.
  • 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.
  • the terminal determines whether a first cell exists.
  • the first cell is a cell that meets the first condition.
  • the terminal determines to perform a corresponding link failure operation based on whether the first cell exists.
  • the link failure operation includes cell handover and/or radio resource control (RRC) reestablishment.
  • RRC radio resource control
  • 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.
  • the terminal 101 stores a CHO configuration pre-configured by the network device 102.
  • 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.
  • 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.
  • 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.
  • the first condition may include: a radio signal measurement result of the cell being higher than a first threshold.
  • the radio signal measurement result includes at least one of RSRP, RSRQ, and SINR.
  • 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.
  • the second cell may be a cell configured by the network device.
  • the network device sends second information to the terminal, where the second information indicates one or more second cells configured by the network device.
  • the second cell may be one or more handover target cells in a CHO configuration.
  • 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.
  • the second cell may be a cell corresponding to a beam that can be detected by the terminal.
  • 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.
  • the second cell meets the first condition and the second cell is determined as the first cell.
  • 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.
  • the second cell meets the first condition and the second cell is determined as the first cell.
  • step S203 one of step S204 and step S205 is executed.
  • Step S204 Terminal 101 determines that a first cell exists, and initiates a cell handover to the first cell.
  • a cell handover may be initiated to the first cell that meets the first condition.
  • Step S205 Terminal 101 determines that the first cell does not exist, and triggers RRC reestablishment.
  • the terminal if the terminal determines that there is no cell that meets the first condition, the terminal triggers RRC re-establishment.
  • 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.
  • "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.
  • the terms “certain”, “preset”, “set”, “indicate”, “a certain”, “any”, “first”, etc. can be used interchangeably, and “certain A”, “preset”, “set”, “indicate”, “a certain ... A”, “preset A”, “set A”, “indicate A”, “a certain A”, “any A”, “first A” can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or instruction, etc., or as specific A, a certain A, any A, or the first A, etc., but not limited to this.
  • steps S202 to S205 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • step S201 is optional and may be omitted or replaced in different embodiments.
  • Step S3101 Acquire first information for wireless link prediction.
  • 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.
  • 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.
  • step S3101 may be implemented as an independent embodiment
  • step S3102 may be implemented as an independent embodiment, but the present invention is not limited thereto.
  • step S3101 and step S3102 may be executed in an interchanged order or simultaneously.
  • step S3102 is optional and may be omitted or replaced in different embodiments.
  • step S3102 is optional and may be omitted or replaced in different 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.
  • 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.
  • 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.
  • terminal 101 obtains a second indication specified by the protocol.
  • terminal 101 obtains a second indication from an upper layer(s).
  • terminal 101 performs processing to obtain the second indication.
  • 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.
  • 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:
  • Step S3201 Acquire first information for wireless link prediction.
  • 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.
  • 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.
  • step S3201 may be implemented as an independent embodiment
  • step S3202 may be implemented as an independent embodiment, but the present invention is not limited thereto.
  • step S3201 and step S3202 may be executed in an interchangeable order or simultaneously.
  • step S3202 is optional and may be omitted or replaced in different 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.
  • 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.
  • 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:
  • Step S3301 Acquire first information for wireless link prediction.
  • Step S3302 Determine that a link failure will occur based on the first information, and perform a corresponding link failure operation.
  • 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.
  • 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.
  • the communication method involved in the embodiment of the present disclosure may include at least one of step S3301 and step S3302.
  • step S3301 may be implemented as an independent embodiment
  • step S3302 may be implemented as an independent embodiment, but the present invention is not limited thereto.
  • step S3301 and step S3302 may be executed in an interchanged order or simultaneously.
  • step S3301 is optional and may be omitted or replaced in different embodiments.
  • step S3302 is optional and may be omitted or replaced in different embodiments.
  • step S3301 may be combined with step S3103 in the embodiment of FIG. 3A , but is not limited thereto.
  • 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:
  • Step S401 Send a second instruction.
  • 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.
  • 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.
  • 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:
  • Step S501 The network device sends a second instruction to the terminal.
  • 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.
  • Step S502 The terminal obtains first information on wireless link prediction.
  • 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.
  • 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.
  • 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.
  • the communication method involved in the embodiment of the present disclosure may include at least one of steps S501 to S503.
  • step S501 may be implemented as an independent embodiment
  • step S502 may be implemented as an independent embodiment
  • step S503 may be implemented as an independent embodiment, but is not limited thereto.
  • step S502 and step S503 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • step S501 and step S503 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • step S501 and step S502 are optional, and one or more of these steps may be omitted or replaced in different 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.
  • 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.
  • the link failure may be a handover failure and/or a wireless link failure.
  • the target cell is a target cell configured by the network.
  • the network may add an indication to the CHO configuration, indicating that the CHO is for handover when a link fails and recovers.
  • 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.
  • the target cell may be a CHO target cell.
  • the first condition is at least one of the following:
  • 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.
  • the wireless signal measurement result of the target cell meets the handover condition, which is carried in the CHO configuration.
  • 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.
  • 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.
  • the UE can initiate an RRC reestablishment process after predicting a link failure, thereby shortening service interruption.
  • the division of the units or modules in the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated.
  • the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, the memory stores instructions, and the processor 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-mentioned 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.
  • CPU central processing unit
  • microprocessor a microprocessor
  • the processor is a circuit with signal processing capabilities.
  • 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).
  • the processor can implement certain functions through the logical relationship of a hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable.
  • the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the link failure includes cell handover failure and/or radio link failure.
  • the link failure operation includes at least one of the following:
  • Radio Resource Control RRC re-establishment.
  • 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.
  • the second cell that meets the first condition is determined as the first cell.
  • the second cell is a cell configured by the network device.
  • the cell configured by the network device includes a cell configured in a condition-based handover (CHO) configuration.
  • CHO condition-based handover
  • 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 handover conditions in the CHO configuration after determining that the link failure will occur.
  • 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:
  • the first threshold is configured by the network device or specified by a protocol.
  • 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.
  • 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.
  • FIG7 is a schematic diagram of the structure of a network device according to an embodiment of the present disclosure.
  • the network device 700 may include at least one of a transceiver module 701 and a processing module 702.
  • the transceiver module 701 is configured to send a second indication to the terminal, wherein the second indication is configured to instruct the terminal to determine the wireless link according to the first information predicted by the terminal.
  • the transceiver module is used to perform at least one of the communication steps such as sending and/or receiving performed by the network device 102 in any of the above methods (such as step S201, but not limited to this), which will not be repeated here.
  • the processing module is used to perform at least one of the other steps (such as step S202, step S203, step S204, step S205, but not limited to this) performed by the network device 102 in any of the above methods, which will not be repeated here.
  • the link failure includes cell handover failure and/or radio link failure.
  • the link failure operation includes at least one of the following:
  • Radio Resource Control RRC re-establishment.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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:
  • 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.
  • the transceiver module may be interchangeable with the transceiver.
  • the processing module can be a single module or can include multiple submodules.
  • the multiple submodules respectively execute all or part of the steps required to be executed by the processing module.
  • the processing module can be interchangeable with the processor.
  • FIG. 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.
  • 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
  • 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.
  • the communication device 8100 is used to perform any of the above methods.
  • one or more processors 8101 are used to call instructions to enable the communication device 8100 to perform any of the above methods.
  • the communication device 8100 further 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).
  • the transceiver may include a receiver and/or a transmitter, and the receiver and transmitter may be separate or integrated.
  • transceiver transceiver unit, transceiver, transceiver circuit, interface circuit, and interface
  • transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable
  • receiver, receiving unit, receiver, and receiving circuit may be interchangeable.
  • 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.
  • 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.
  • 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.
  • FIG. 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.
  • 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.
  • 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.
  • 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).
  • modules and/or devices described in various embodiments can be arbitrarily combined or separated according to circumstances.
  • some or all steps can also be performed collaboratively by multiple modules and/or devices, which is not limited here.
  • 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.
  • the storage medium is an electronic storage medium.
  • 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.
  • the storage medium may be a non-transitory storage medium, but is not limited thereto, and may also be a temporary storage medium.
  • 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.
  • the program product is a computer program product.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne des procédés de communication, des terminaux, des dispositifs de réseau, un système de communication et un support de stockage. Un procédé exécuté par un terminal consiste à : acquérir des premières informations pour prédire une liaison sans fil ; et déterminer, sur la base des premières informations, qu'une défaillance de liaison est sur le point de se produire, et exécuter une opération de défaillance de liaison correspondante. L'utilisation de la solution technique de la présente divulgation peut réduire les durées d'interruption de service, de façon à rétablir rapidement les services de réseau.
PCT/CN2024/078171 2024-02-22 2024-02-22 Procédés de communication, terminaux, dispositifs de réseau, système de communication et support de stockage Pending WO2025175531A1 (fr)

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PCT/CN2024/078171 WO2025175531A1 (fr) 2024-02-22 2024-02-22 Procédés de communication, terminaux, dispositifs de réseau, système de communication et support de stockage
CN202480014218.4A CN120836167A (zh) 2024-02-22 2024-02-22 通信方法、终端、网络设备、通信系统及存储介质

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CN117121549A (zh) * 2023-06-29 2023-11-24 北京小米移动软件有限公司 信息处理方法、终端、通信系统及存储介质
CN117158035A (zh) * 2021-06-15 2023-12-01 Oppo广东移动通信有限公司 小区切换方法、装置、设备及存储介质
CN117295120A (zh) * 2022-06-16 2023-12-26 华为技术有限公司 小区切换的方法和通信装置
WO2024026885A1 (fr) * 2022-08-05 2024-02-08 北京小米移动软件有限公司 Procédé de commutation de chemin et appareil

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US20220322195A1 (en) * 2019-06-19 2022-10-06 Telefonaktiebolaget Lm Ericsson (Publ) Machine learning for handover
CN117158035A (zh) * 2021-06-15 2023-12-01 Oppo广东移动通信有限公司 小区切换方法、装置、设备及存储介质
CN117295120A (zh) * 2022-06-16 2023-12-26 华为技术有限公司 小区切换的方法和通信装置
WO2024026885A1 (fr) * 2022-08-05 2024-02-08 北京小米移动软件有限公司 Procédé de commutation de chemin et appareil
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