WO2023005848A1 - 无线通信方法及通信装置 - Google Patents

无线通信方法及通信装置 Download PDF

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Publication number
WO2023005848A1
WO2023005848A1 PCT/CN2022/107438 CN2022107438W WO2023005848A1 WO 2023005848 A1 WO2023005848 A1 WO 2023005848A1 CN 2022107438 W CN2022107438 W CN 2022107438W WO 2023005848 A1 WO2023005848 A1 WO 2023005848A1
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Prior art keywords
cell
duration
terminal
radio link
switching command
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PCT/CN2022/107438
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English (en)
French (fr)
Inventor
曾宇
耿婷婷
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华为技术有限公司
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Publication of WO2023005848A1 publication Critical patent/WO2023005848A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present application relates to the technical field of wireless communication, and in particular, to a wireless communication method and a communication device.
  • the terminal can reside in the cell, and the cell can provide services for the terminal.
  • a radio link failure may also occur in the cell accessed by the terminal.
  • the terminal After detecting that a radio link failure occurs, the terminal needs to record connection failure information, and the connection failure information includes identification information of a cell where the radio link failure occurs.
  • connection failure information cannot truly reflect the cause of the wireless link failure.
  • the present application provides a wireless communication method and a communication device, which are used to accurately record connection failure information, so that radio access network equipment can implement accurate mobility optimization according to the connection failure information.
  • the embodiment of the present application provides a wireless communication method, and the method may be executed by a terminal or a module (such as a chip) applied to the terminal.
  • the method includes: after receiving a first handover command from a first cell, detecting a radio link failure, the first cell is a cell to which the terminal is handed over according to a second handover command from a second cell;
  • the terminal when the terminal detects that the radio link fails in the first cell after handover, if the first condition is satisfied, the terminal can record the identification information of the second cell in the connection failure information, and the connection failure information can accurately reflect the cause of the failure.
  • the reason for the radio link failure this time is that the radio link failure is related to the second cell, so after the connection failure information is reported to the base station, the base station can implement accurate mobility optimization according to the connection failure information.
  • the first handover command includes a conditional handover trigger condition
  • the first condition includes: the radio link failure occurs before the conditional handover trigger condition is satisfied.
  • the radio link failure occurs before the conditional handover trigger condition is satisfied, it indicates that the radio link failure has nothing to do with the first handover command, but may have something to do with the second cell accessed before the handover, so the terminal
  • the identification information of the second cell is recorded in the connection failure information, and the connection failure information can accurately reflect the cause of the radio link failure.
  • the first condition includes: the first duration is less than or equal to a threshold;
  • the first duration is the duration between the terminal receiving the second handover command and the terminal having radio link failure in the first cell;
  • the first duration is the duration between the terminal receiving the second switching command and the terminal receiving the first switching command.
  • the first duration is the duration between when the terminal executes the second handover command and when the terminal fails the radio link in the first cell; or,
  • the first duration is the duration between the terminal executing the second switching command and the terminal receiving the first switching command; or,
  • the first duration is the duration between when the terminal successfully switches to the first cell and when the terminal fails the radio link in the first cell; or,
  • the first duration is the duration between when the terminal successfully switches to the first cell and when the terminal receives the first switching command; or,
  • the first duration is the duration between when the terminal completes the random access channel (random access channel, RACH) access to the first cell and when the terminal fails the radio link in the first cell; or,
  • the first duration is the duration between the terminal completing the RACH access of the first cell and the terminal receiving the first handover command.
  • the terminal when the first time length is less than or equal to the threshold value, it indicates that the terminal has a radio link failure within a short period of time after switching to the first cell, so this radio link failure may be different from the first cell before the handover.
  • the two cells are related, so the terminal records the identification information of the second cell in the connection failure information, and the connection failure information can accurately reflect the cause of the radio link failure.
  • configuration information is received, and the configuration information includes the threshold value.
  • the connection failure information also includes the first duration.
  • the terminal records the first duration in the connection failure information, which helps the base station to implement accurate mobility optimization according to the first duration.
  • the first switching command is a conditional switching command
  • the second switching command is a normal switching command, a dual-activation protocol stack switching command or a conditional switching command.
  • the connection failure information includes a second duration and the identification information of the first cell; wherein, the second duration is when the terminal receives the The time length between the first handover command and the occurrence of radio link failure in the first cell of the terminal.
  • the connection failure information includes the second duration and the first cell.
  • the identification information of a cell helps the base station to implement accurate mobility optimization according to the second duration.
  • the embodiment of the present application provides a wireless communication method, and the method may be executed by a radio access network device or a module (such as a chip) applied to the radio access network device.
  • the radio access network device manages the first cell, and the method includes: receiving connection failure information from the terminal, where the connection failure information includes identification information of a second cell, and the second cell is where the terminal switches to the first cell A previously accessed cell; sending the connection failure information to the second cell.
  • the radio access network device sends the connection failure information to the second cell related to the connection failure information, so that the second cell can perform mobility optimization according to the connection failure information.
  • connection failure information further includes a first duration; if it is determined that the first duration is less than or equal to a threshold value, the connection failure information is sent to the second cell;
  • the first duration is the duration between when the terminal receives the second handover command from the second cell and when the terminal fails the radio link in the first cell;
  • the first duration is the duration between the terminal receiving the second handover command from the second cell and the terminal receiving the first handover command from the first cell; or,
  • the first duration is the duration between when the terminal executes the second handover command from the second cell and when the terminal fails the radio link in the first cell; or,
  • the first duration is the duration between the terminal receiving the second handover command from the second cell and the terminal receiving the first handover command from the first cell; or,
  • the first duration is the duration between when the terminal successfully switches to the first cell and when the terminal fails the radio link in the first cell; or,
  • the first duration is the duration between the terminal successfully switching to the first cell and the terminal receiving the first switching command from the first cell; or,
  • the first duration is the duration between the completion of the terminal and the random access channel RACH access of the first cell until the terminal fails the radio link in the first cell; or,
  • the first duration is the duration between the terminal completing the RACH access of the first cell and the terminal receiving the first handover command from the first cell.
  • connection failure information also includes the threshold value.
  • the threshold value from the second cell is received.
  • the first switching command is a conditional switching command
  • the second switching command is a normal switching command, a dual-activation protocol stack switching command or a conditional switching command.
  • the embodiment of the present application provides a communication device, and the device may be a terminal, and may also be a chip for the terminal.
  • the device has the function of realizing any realization method of the first aspect above. This function may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the embodiment of the present application provides a communication device, and the device may be a radio access network device, or may be a chip or a module for the radio access network device.
  • the device has the function of implementing any implementation method of the second aspect above. This function may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the embodiment of the present application provides a communication device, including a processor and a memory; the memory is used to store computer instructions, and when the device is running, the processor executes the computer instructions stored in the memory so that the device executes Any implementation method in the first aspect to the second aspect above.
  • the embodiment of the present application provides a communication device, including a unit or means (means) for performing each step of any implementation method in the first aspect to the second aspect.
  • the embodiment of the present application provides a communication device, including a processor and an interface circuit, the processor is configured to communicate with other devices through the interface circuit, and execute any implementation method in the first aspect to the second aspect above.
  • the processor includes one or more.
  • an embodiment of the present application provides a communication device, including a processor coupled to a memory, and the processor is used to call a program stored in the memory to execute any implementation method in the first aspect to the second aspect above .
  • the memory may be located within the device or external to the device. And there may be one or more processors.
  • the embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores instructions, and when it is run on a communication device, the above-mentioned first to second aspects Any implementation method is executed.
  • the embodiment of the present application also provides a computer program product, the computer program product includes a computer program or instruction, when the computer program or instruction is run by the communication device, any of the above first to second aspects can be realized method is executed.
  • the embodiment of the present application further provides a chip system, including: a processor, configured to execute any implementation method in the first aspect to the second aspect above.
  • the embodiment of the present application further provides a communication system, including: a terminal configured to implement any implementation method of the first aspect above, and a wireless access network device configured to implement any implementation method of the second aspect above.
  • FIG. 1 is a schematic structural diagram of a communication system applied in an embodiment of the present application
  • FIG. 2 is a schematic diagram of a handover scenario in which common handover and conditional handover are mixed;
  • FIG. 3 is a schematic diagram of a wireless communication method provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a terminal switching a cell
  • FIG. 5 is a schematic diagram of a communication device provided in an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a communication device provided by an embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of a communication system applied in an embodiment of the present application.
  • a communication system 1000 includes a radio access network 100 and a core network 200 , and optionally, the communication system 1000 may also include an Internet 300 .
  • the radio access network 100 may include at least one radio access network device (such as 110a and 110b in FIG. 1 ), and may also include at least one terminal (such as 120a-120j in FIG. 1 ).
  • the terminal is connected to the wireless access network device in a wireless manner, and the wireless access network device is connected to the core network in a wireless or wired manner.
  • the core network equipment and the wireless access network equipment can be independent and different physical equipment, or the functions of the core network equipment and the logical functions of the wireless access network equipment can be integrated on the same physical equipment, or it can be a physical equipment It integrates some functions of core network equipment and some functions of wireless access network equipment. Terminals and wireless access network devices may be connected to each other in a wired or wireless manner.
  • FIG. 1 is only a schematic diagram.
  • the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1 .
  • the radio access network equipment can be a base station (base station), an evolved base station (evolved NodeB, eNodeB), a transmission reception point (transmission reception point, TRP), and the next generation in the fifth generation (5th generation, 5G) mobile communication system
  • Base station (next generation NodeB, gNB), the next generation base station in the sixth generation (6th generation, 6G) mobile communication system, the base station in the future mobile communication system or the access node in the wireless fidelity (wireless fidelity, WiFi) system etc.; it can also be a module or unit that completes some functions of the base station, for example, it can be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU).
  • the radio access network device may be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), or a relay node or a donor node.
  • the embodiment of the present application does not limit the specific technology and specific equipment form adopted by the wireless access network equipment.
  • a base station is used as an example of a radio access network device for description.
  • a terminal may also be called terminal equipment, user equipment (user equipment, UE), mobile station, mobile terminal, and so on.
  • Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things ( internet of things, IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, etc.
  • Terminals can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc.
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal.
  • Base stations and terminals can be fixed or mobile. Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the base station and the terminal.
  • the helicopter or UAV 120i in FIG. base station for base station 110a, 120i is a terminal, that is, communication between 110a and 120i is performed through a wireless air interface protocol.
  • communication between 110a and 120i may also be performed through an interface protocol between base stations.
  • 120i compared to 110a, 120i is also a base station. Therefore, both the base station and the terminal can be collectively referred to as a communication device, 110a and 110b in FIG. 1 can be referred to as a communication device with a base station function, and 120a-120j in FIG. 1 can be referred to as a communication device with a terminal function.
  • the communication between the base station and the terminal, between the base station and the base station, and between the terminal and the terminal can be carried out through the licensed spectrum, the communication can also be carried out through the unlicensed spectrum, and the communication can also be carried out through the licensed spectrum and the unlicensed spectrum at the same time; Communication may be performed on a frequency spectrum below megahertz (gigahertz, GHz), communication may also be performed through a frequency spectrum above 6 GHz, and communication may also be performed using a frequency spectrum below 6 GHz and a frequency spectrum above 6 GHz at the same time.
  • the embodiments of the present application do not limit the frequency spectrum resources used for wireless communication.
  • the functions of the base station may also be performed by a module (such as a chip) in the base station, or may be performed by a control subsystem including the functions of the base station.
  • the control subsystem including base station functions here may be the control center in the above application scenarios such as smart grid, industrial control, intelligent transportation, and smart city.
  • the functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or may be performed by a device including the terminal function.
  • the base station sends downlink signals or downlink information to the terminal, and the downlink signals or downlink information are carried on the downlink channel; the terminal sends uplink signals or uplink information to the base station, and the uplink signals or uplink information are carried on the uplink channel.
  • the terminal In order to communicate with the base station, the terminal needs to establish a wireless connection with the cell controlled by the base station. A cell with which a terminal has established a wireless connection is called a serving cell of the terminal. When the terminal communicates with the serving cell, it will also be interfered by signals from neighboring cells.
  • Handover scenarios include, but are not limited to, conditional handover (CHO), common handover (legacy/ordinary handover, legacy/ordinary HO), and dual active protocol stack (DAPS) handover.
  • conditional handover CHO
  • common handover legacy/ordinary handover
  • DAPS dual active protocol stack
  • conditional handover refers to that the source base station sends conditional handover configuration information to the terminal when the quality of the source link is good.
  • the source base station may send a radio resource control (radio resource control, RRC) message to the terminal.
  • RRC radio resource control
  • the RRC message includes conditional handover configuration information.
  • the RRC message may be an existing RRC message or a newly defined RRC message.
  • the newly defined RRC message may be, for example, a conditional RRC reconfiguration message (CondRRCReconfiguration) or other RRC messages.
  • the conditional handover configuration information may include conditional handover trigger conditions and information of one or more candidate cells (such as the cell global identification (cell global identification, CGI) and frequency information of the candidate cell, or the physical cell identification (physical cell identification) of the candidate cell cell identification, PCI) and frequency information).
  • the terminal judges whether the candidate cell satisfies the conditional handover triggering condition according to the conditional handover configuration information, and if so, takes the candidate cell as the target cell. Then, the terminal performs a random access process with the target cell. When the random access is successful, the terminal sends an RRC message (such as an RRC reconfiguration complete message) to the base station to which the target cell belongs (ie, the target base station) to notify the target base station that the conditional handover is complete .
  • RRC message such as an RRC reconfiguration complete message
  • Normal handover is a handover process in which the terminal disconnects from the source cell after receiving a handover command from the source cell, and then connects to the target cell.
  • Dual-activation protocol stack switching means that the terminal accesses the target cell after receiving the switching command from the source cell, but can still perform uplink and downlink data transmission with the source cell until the target cell instructs the terminal to stop communicating with the source cell. communication.
  • the terminal may record a radio link failure report; or in the case of a handover failure, the terminal may also record the radio link failure report. After recording the radio link failure report, the terminal may report the radio link failure report to the base station to which the target cell belongs.
  • RLF radio link failure
  • the radio link failure report may include one or more of the following contents:
  • the radio link failure report recorded by the terminal contains the identification information of the target cell, where the target cell can be the primary cell or other districts.
  • the radio link failure report recorded by the terminal contains the identification information of the source cell, where the source cell can be the primary cell before the handover district or other districts.
  • identification information of the target cell or the identification information of the source cell recorded in the above radio link failure report may be referred to as identification information of the failed cell.
  • connection failure type may be wireless link failure or handover failure.
  • the cell that sent the handover command to the terminal last time is the source cell, and the source cell may be handed over to the previous primary cell or other cells.
  • the identification information of the cell that attempts to initiate the re-establishment process after the terminal connection fails.
  • the time after the wireless link failure occurs in the terminal may refer to the time between when the wireless link failure occurs and when the wireless link failure report is reported.
  • the reasons for wireless link failure include but not limited to the following three:
  • the terminal When the terminal stays in the source cell for a short period of time, and the wireless link fails soon after it is successfully handed over from the source cell to the target cell, or a handover failure occurs during the handover process, the terminal tries to re-establish a wireless connection with the source cell .
  • the terminal When the terminal successfully switches from the source cell to the target cell, the wireless link failure occurs soon, or the handover failure occurs during the handover process.
  • This process can be understood as the handover to an inappropriate cell (ie, the target cell), so The terminal may attempt to re-establish radio connections with other cells than the source cell and the target cell.
  • a terminal when a terminal completes a normal handover (or dual-activation protocol stack handover, conditional handover), it receives A switching command is received, and the switching command includes conditional switching configuration information. If a radio link failure occurs within a short period of time after the terminal receives the conditional handover configuration information, the terminal records a radio link failure report.
  • the radio link failure report includes the identification and connection failure time of the cell that sent the handover command to the terminal last time.
  • the connection failure time is the time between when the terminal receives the conditional handover configuration information and when the wireless link fails.
  • the information contained in the radio link failure report recorded by the terminal is related to the target cell after the handover is completed.
  • the reason for the wireless link failure is generally caused by the previous handover, but the wireless link failure report recorded by the terminal does not contain information related to the previous handover, so the information recorded in the wireless link failure report The information is not accurate enough, so that the base station cannot implement accurate mobility optimization after receiving the radio link failure report reported by the terminal.
  • FIG. 2 is a schematic diagram of a handover scenario in which ordinary handover and conditional handover are mixed.
  • the first handover occurs when the terminal is camped in cell 0, that is, a normal handover, in which the terminal is handed over from cell 0 to cell 1.
  • the terminal receives a handover command in cell 1.
  • the handover command includes conditional handover configuration information, and the conditional handover configuration information includes conditional handover trigger conditions and cell 2 information, that is, the The conditional handover configuration information indicates that the terminal is handed over to cell 2 after the conditional handover trigger condition is satisfied. If the terminal fails in the radio link within a short period of time after cell 1 receives the conditional handover configuration information, it can be considered that the radio link failure is caused by the handover of the terminal from cell 0 to an inappropriate cell 1 .
  • the terminal can record a radio link failure report, which includes the identity of the primary cell that sent the handover command to the terminal last time, that is, the identity information of cell 1, and the connection Failure time, the connection failure time is the time from when the cell 1 receives the handover command to when the radio link failure occurs in the cell 1. It can be seen that the identification information of cell 1 is recorded in the radio link failure report, and the identification information of cell 0 is not recorded. After the terminal reports the radio link failure report to the base station, since the radio link failure report does not include the identification information of cell 0, the base station cannot perform accurate mobility optimization based on the radio link failure report.
  • An embodiment of the present application provides a wireless communication method.
  • the wireless communication method provided in the embodiment of the present application may be executed by a terminal or a module for the terminal, and a base station or a module for the base station.
  • the wireless communication method performed by the terminal and the base station is taken as an example for illustration.
  • FIG. 3 is a schematic diagram of a wireless communication method provided by an embodiment of the present application. The method includes the following steps:
  • Step 301 the terminal receives a first handover command from the first cell in the first cell, and the first cell is a cell to which the terminal is handed over according to the second handover command from the second cell.
  • the base station to which the second cell belongs when the terminal accesses or camps on the second cell, the base station to which the second cell belongs sends a second handover command to the terminal, and the terminal switches to the first cell according to the second handover command. After switching to the first cell, the terminal receives a first switching command in the first cell, and the first switching command is sent to the terminal by the base station to which the first cell belongs.
  • the base station to which the first cell belongs may be the same as or different from the base station to which the second cell belongs.
  • FIG. 4 is a schematic diagram of cell handover by a terminal.
  • the terminal accesses the second cell, and at time T2, the terminal receives a second handover command in the second cell.
  • the terminal successfully switches to the first cell at time T3, and receives the first switching command at time T4.
  • the second handover command is an RRC reconfiguration message.
  • Step 302 after receiving the first handover command from the first cell, the terminal detects that the radio link fails.
  • the terminal detects that the radio link fails at time T5 after receiving the first handover command.
  • Step 303 the terminal records connection failure information corresponding to the radio link failure, where, if the first condition is met, the connection failure information includes the identification information of the second cell.
  • the terminal may record connection failure information corresponding to the wireless link failure.
  • connection failure information includes the identification information of the second cell.
  • connection failure information may further include identification information of the first cell.
  • the terminal when the terminal detects that the radio link fails in the first cell after handover, if the first condition is satisfied, the terminal can record the identification information of the second cell in the connection failure information, and the connection failure information can accurately reflect the cause of the failure.
  • the reason for the radio link failure this time is that the radio link failure is related to the second cell, so after the connection failure information is reported to the base station, the base station can implement accurate mobility optimization according to the connection failure information.
  • the above-mentioned second switching command is a common switching command, a dual-activation protocol stack switching command or a conditional switching command
  • the above-mentioned first switching command is a conditional switching command
  • the first handover command when the first handover command is a conditional handover command, the first handover command includes a conditional handover trigger condition, and the first condition includes: a radio link failure occurs before the conditional handover trigger condition is satisfied. That is, after the terminal accesses the first cell, the first cell receives the first handover command including conditional handover configuration conditions, and the radio link failure occurs before the conditional handover trigger condition is met, indicating that the radio link failure is related to The first handover command has nothing to do with it, but may have something to do with the second cell accessed before the handover, so the terminal records the identification information of the second cell in the connection failure information.
  • the threshold value may be pre-configured to the terminal by the base station belonging to the second cell through configuration information, that is, the base station belonging to the second cell sends configuration information including the threshold value to the terminal, for example, in the above-mentioned second handover command or the threshold value is predefined by the protocol; or the threshold value is configured by the network management device to the terminal, and the method for obtaining the threshold value is not limited in this embodiment of the present application.
  • the methods for defining the first duration here include but are not limited to methods 1 to 8 below.
  • the first duration is the duration between when the terminal receives the second handover command and when the terminal fails the radio link in the first cell.
  • method 1 When the second switching command is a common switching command or a dual-activation protocol stack switching command, and the first switching command is a conditional switching command, method 1 can be adopted.
  • the first duration is the duration between T2 and T5.
  • a timer may be used to record the first duration.
  • the first timer is started at T2, and the first timer is stopped at T5, so that the duration recorded by the first timer is the first duration.
  • start the first timer at T2 stop the first timer at T4 and start the second timer, and stop the first timer at T5, so that the duration recorded by the first timer is the same as that recorded by the second timer.
  • the sum of durations is the first duration.
  • the first duration is the duration between when the terminal receives the second switching command and when the terminal receives the first switching command.
  • method 2 When the second switching command is a common switching command or a dual-activation protocol stack switching command, and the first switching command is a conditional switching command, method 2 may be used.
  • the first duration is the duration between T2 and T4.
  • a timer may be used to record the first duration.
  • the first timer is started at T2, and the first timer is stopped at T4, so that the duration recorded by the first timer is the first duration.
  • start the first timer at T2 start the second timer at T4, stop the first timer and the second timer at T5, so that the duration recorded by the first timer is the same as that recorded by the second timer.
  • the difference in duration is the first duration.
  • the first duration is the duration between when the terminal executes the second handover command and when the terminal fails the radio link in the first cell.
  • method 3 can be used.
  • the first duration is the duration between T7 and T5.
  • a timer may be used to record the first duration. For example, start the first timer at time T7 and stop the first timer at time T5, so the duration recorded by the first timer is the first duration.
  • the sum of durations is the first duration.
  • the first duration is the duration between when the terminal executes the second switching command and when the terminal receives the first switching command.
  • method 4 When the second switching command is a conditional switching command and the first switching command is a conditional switching command, method 4 can be adopted.
  • the first duration is the duration between T7 and T4.
  • a timer may be used to record the first duration.
  • the first timer is started at time T7, and the first timer is stopped at time T4, so that the duration recorded by the first timer is the first duration.
  • the difference in duration is the first duration.
  • the first duration is the duration between when the terminal successfully switches to the first cell and when the terminal fails the radio link in the first cell.
  • method 5 When the second switching command is a normal switching command, a dual-activation protocol stack switching command or a conditional switching command, and the first switching command is a conditional switching command, method 5 can be used.
  • the first duration is the duration between T3 and T5.
  • a timer may be used to record the first duration.
  • the first timer is started at T3, and the first timer is stopped at T5, so that the duration recorded by the first timer is the first duration.
  • the sum of durations is the first duration.
  • the first duration is the duration between when the terminal successfully switches to the first cell and when the terminal receives the first switching command.
  • the second switching command is a normal switching command, a dual-activation protocol stack switching command or a conditional switching command, and the first switching command is a conditional switching command, method 6 can be adopted.
  • the first duration is the duration between T3 and T4.
  • a timer may be used to record the first duration.
  • the first timer is started at T3, and the first timer is stopped at T4, so that the duration recorded by the first timer is the first duration.
  • the first timer is started at T3, the second timer is started at T4, and the first timer and the second timer are stopped at T5, so that the duration recorded by the first timer is the same as that recorded by the second timer.
  • the difference in duration is the first duration.
  • the first duration is the duration between the completion of the terminal's RACH access in the first cell and the failure of the radio link of the terminal in the first cell.
  • method 5 When the second switching command is a normal switching command, a dual-activation protocol stack switching command or a conditional switching command, and the first switching command is a conditional switching command, method 5 can be used.
  • the first duration is the duration between T8 and T5.
  • a timer may be used to record the first duration. For example, start the first timer at time T8 and stop the first timer at time T5, so the duration recorded by the first timer is the first duration.
  • start the first timer at T8 stop the first timer at T4 and start the second timer, and stop the second timer at T5, so that the duration recorded by the first timer is the same as that recorded by the second timer.
  • the sum of durations is the first duration.
  • the first duration is the duration between when the terminal completes the RACH access of the first cell and when the terminal receives the first handover command.
  • method 5 When the second switching command is a normal switching command, a dual-activation protocol stack switching command or a conditional switching command, and the first switching command is a conditional switching command, method 5 can be used.
  • the first duration is the duration between T8 and T4.
  • a timer may be used to record the first duration.
  • the first timer is started at T8, and the first timer is stopped at T4, so that the duration recorded by the first timer is the first duration.
  • the first timer is started at T8, the second timer is started at T4, and the first timer and the second timer are stopped at T5, so that the duration recorded by the first timer is the same as that recorded by the second timer.
  • the difference in duration is the first duration.
  • the terminal when the first duration is less than or equal to the threshold value, it indicates that the terminal has a radio link failure within a short period of time after handing over to the first cell, so this time The radio link failure is probably related to the second cell before the handover, so the terminal records the identification information of the second cell in the connection failure information.
  • the terminal may also record the first duration in the connection failure information, thereby helping the base station to realize accurate Mobility optimization.
  • the terminal can record the first cell in the connection failure information.
  • the second duration is the duration between when the terminal receives the first handover command and when the terminal fails the radio link in the first cell, that is, the duration between T4 and T5 in FIG. 4 .
  • previouscellID and timeConnFailure may be carried in the radio link failure report.
  • previouscellID represents the identification information of the cell that sent the handover command to the terminal last time
  • previouscellID is the identification information of the first cell.
  • timeConnFailure indicates the time between the last time the terminal receives the switching command and the radio link failure occurs. Referring to FIG. 4 , timeConnFailure is the duration between T4 and T5, also called the second duration.
  • Implementation method 1 adding a radio link failure report, the radio link failure report includes connection failure information, the connection failure information includes the identification information of the second cell, and optionally, the connection failure information also includes the first duration.
  • the terminal can report two radio link failure reports, wherein one radio link failure report is the same as the radio link failure report in the prior art, that is, it contains the identification information of the first cell and the second duration, and the other radio link failure report
  • the link failure report is a newly added radio link failure report, and the radio link failure report includes the identification information of the second cell, and optionally, also includes the first duration.
  • Implementation method 2 adding a new field in the existing radio link failure report, using the new field to carry the identification information of the second cell, and optionally, using the new field to carry the first duration.
  • the radio link failure report reported by the terminal includes not only the identification information of the first cell and the second duration, but also the identification information of the second cell, and optionally, the first duration.
  • the identification information of the first cell and the second duration are recorded using the previouscellID field and the timeConnFailure field respectively, while the identification information of the second cell and the first duration are recorded using a newly added field.
  • the previouscellID field in the radio link failure report reported by the terminal is no longer used to record the identification information of the first cell, but is used to record the identification information of the second cell.
  • the timeConnFailure field is no longer used to record the second duration, but is used to record the first duration.
  • Step 304 the terminal reports connection failure information.
  • the connection failure information recorded by the terminal may be reported to the base station to which the first cell belongs.
  • the terminal may send the above connection failure information to the base station to which the first cell belongs through an air interface between the terminal and the base station to which the first cell belongs.
  • the terminal may send the connection failure information to the other base station through the air interface between the terminal and the other base station, and then the other base station sends the connection failure information to the base station to which the first cell belongs.
  • the connection failure information may be carried in a radio link failure report (RLF report) and reported to the base station to which the first cell belongs.
  • RLF report radio link failure report
  • Step 305 the base station to which the first cell belongs sends connection failure information to the base station to which the second cell belongs.
  • the base station to which the first cell belongs After receiving the connection failure information reported by the terminal, the base station to which the first cell belongs obtains the identification information of the second cell in the connection failure information.
  • the base station to which the first cell belongs determines that the second cell does not belong to the base station, that is, the If the second cell and the first cell do not belong to the same base station, the base station to which the first cell belongs sends the connection failure information to the base station to which the second cell belongs.
  • the base station belonging to the first cell sends the connection failure information to the base station belonging to the second cell related to the connection failure information, so that the base station belonging to the second cell can perform mobility according to the connection failure information optimization.
  • the connection failure information when the connection failure information includes the above-mentioned first duration, before the base station belonging to the first cell sends the connection failure information to the base station belonging to the second cell, it also judges whether the first duration is less than or equal to the threshold value, the threshold value is the same as the aforementioned threshold value used by the terminal. If the first duration is less than or equal to the threshold value, it indicates that the radio link failure is related to the second cell, and the base station belonging to the first cell sends the connection failure information to the base station belonging to the second cell. If the first duration is greater than the threshold, the base station to which the first cell belongs may not send the connection failure information to the base station to which the second cell belongs.
  • the method for the base station belonging to the first cell to obtain the threshold value includes but not limited to: the protocol pre-defines the threshold value, the base station belonging to the first cell pre-generates the threshold value, and the network management device pre-configures the threshold value for the base station belonging to the first cell.
  • the threshold value, the threshold value sent by the base station to which the second cell belongs to the base station to which the first cell belongs, or the threshold value is carried in the connection failure information reported by the terminal.
  • the base station to which the second cell belongs may perform corresponding mobility optimization.
  • the mobility optimization method may be to modify the handover threshold from the second cell to the first cell.
  • the base station and the terminal include hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software with reference to the units and method steps of the examples described in the embodiments disclosed in the present application. Whether a certain function is executed by hardware or computer software drives the hardware depends on the specific application scenario and design constraints of the technical solution.
  • FIG. 5 and FIG. 6 are schematic structural diagrams of possible communication devices provided by the embodiments of the present application. These communication devices can be used to implement the functions of the terminal or the base station in the above method embodiments, and therefore can also realize the beneficial effects of the above method embodiments.
  • the communication device may be one of the terminals 120a-120j shown in FIG. 1, or the base station 110a or 110b shown in FIG. 1, or a terminal or a base station Modules (such as chips).
  • a communication device 500 includes a processing unit 510 and a transceiver unit 520 .
  • the communication device 500 is configured to implement functions of a terminal or a base station in the method embodiment shown in FIG. 3 above.
  • the transceiver unit 520 is used to receive the first handover command from the first cell; the processing unit 510, After the transceiver unit 520 receives the first handover command from the first cell, it detects that the radio link fails, and the first cell is the cell to which the terminal switches to according to the second handover command from the second cell;
  • the processing unit 510 is further configured to record connection failure information corresponding to the wireless link failure, where, in a case where the first condition is satisfied, the connection failure information includes the identification information of the second cell.
  • the first handover command includes a conditional handover trigger condition
  • the first condition includes: the radio link failure occurs before the conditional handover trigger condition is met.
  • the first condition includes: the first duration is less than or equal to a threshold;
  • the first duration is the duration between when the terminal receives the second handover command and when the terminal fails the radio link in the first cell;
  • the first duration is the duration between the terminal receiving the second switching command and the terminal receiving the first switching command.
  • the first duration is the duration between the terminal executing the second handover command and the terminal having a radio link failure in the first cell; or,
  • the first duration is the duration between the terminal executing the second switching command and the terminal receiving the first switching command; or,
  • the first duration is the duration between when the terminal successfully switches to the first cell and when the terminal fails the radio link in the first cell; or,
  • the first duration is the duration between when the terminal successfully switches to the first cell and when the terminal receives the first switching command; or,
  • the first duration is the duration between the completion of the terminal and the random access channel RACH access of the first cell until the terminal fails the radio link in the first cell; or,
  • the first duration is the duration between the terminal completing the RACH access of the first cell and the terminal receiving the first handover command.
  • the transceiving unit 520 is further configured to receive configuration information, where the configuration information includes the threshold value.
  • the connection failure information also includes the first duration.
  • the first switching command is a conditional switching command
  • the second switching command is a normal switching command, a dual-activation protocol stack switching command or a conditional switching command.
  • the connection failure information includes a second duration and the identification information of the first cell; wherein, the second duration is when the terminal receives the The time length between the first handover command and the occurrence of radio link failure in the first cell of the terminal.
  • the transceiver unit 520 is used to receive connection failure information from the terminal, the connection failure information includes identification information of a second cell, where the second cell is a cell accessed by the terminal before switching to the first cell; and sending the connection failure information to the second cell.
  • the processing unit 510 is configured to determine that the second cell does not belong to the radio access network device before the transceiver unit 520 sends the connection failure information to the second cell.
  • connection failure information also includes a first duration; the transceiver unit 520 is specifically configured to, when the processing unit 510 determines that the first duration is less than or equal to a threshold value, send The cell sends the connection failure information;
  • the first duration is the duration between when the terminal receives the second handover command from the second cell and when the terminal fails the radio link in the first cell;
  • the first duration is the duration between the terminal receiving the second handover command from the second cell and the terminal receiving the first handover command from the first cell; or,
  • the first duration is the duration between when the terminal executes the second handover command from the second cell and when the terminal fails the radio link in the first cell; or,
  • the first duration is the duration between the terminal receiving the second handover command from the second cell and the terminal receiving the first handover command from the first cell; or,
  • the first duration is the duration between when the terminal successfully switches to the first cell and when the terminal fails the radio link in the first cell; or,
  • the first duration is the duration between the terminal successfully switching to the first cell and the terminal receiving the first switching command from the first cell; or,
  • the first duration is the duration between the completion of the terminal and the random access channel RACH access of the first cell until the terminal fails the radio link in the first cell; or,
  • the first duration is the duration between the terminal completing the RACH access of the first cell and the terminal receiving the first handover command from the first cell.
  • connection failure information also includes the threshold value.
  • the transceiving unit 520 is further configured to receive the threshold value from the second cell.
  • the first switching command is a conditional switching command
  • the second switching command is a normal switching command, a dual-activation protocol stack switching command or a conditional switching command.
  • processing unit 510 and the transceiver unit 520 can be directly obtained by referring to the relevant descriptions in the method embodiment shown in FIG. 3 , and will not be repeated here.
  • the communication device 600 includes a processor 610 and an interface circuit 620 .
  • the processor 610 and the interface circuit 620 are coupled to each other.
  • the interface circuit 620 may be a transceiver or an input-output interface.
  • the communication device 600 may further include a memory 630 for storing instructions executed by the processor 610 or storing input data required by the processor 610 to execute the instructions or storing data generated after the processor 610 executes the instructions.
  • the processor 610 is used to implement the functions of the processing unit 510
  • the interface circuit 620 is used to implement the functions of the transceiver unit 520 .
  • the terminal chip implements the functions of the terminal in the above method embodiment.
  • the terminal chip receives information from other modules in the terminal (such as radio frequency modules or antennas), and the information is sent to the terminal by the base station; or, the terminal chip sends information to other modules in the terminal (such as radio frequency modules or antennas), and the The information is sent by the terminal to the base station.
  • the base station module implements the functions of the base station in the above method embodiment.
  • the base station module receives information from other modules in the base station (such as radio frequency modules or antennas), and the information is sent to the base station by the terminal; or, the base station module sends information to other modules in the base station (such as radio frequency modules or antennas), the The information is sent by the base station to the terminal.
  • the base station module here may be a baseband chip of the base station, or a DU or other modules, and the DU here may be a DU under an open radio access network (O-RAN) architecture.
  • OF-RAN open radio access network
  • the processor in the embodiments of the present application can be a central processing unit (Central Processing Unit, CPU), and can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • a general-purpose processor can be a microprocessor, or any conventional processor.
  • the method steps in the embodiments of the present application may be implemented by means of hardware, or may be implemented by means of a processor executing software instructions.
  • Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disk, removable hard disk, compact disc read-only memory (CD-ROM) or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium.
  • the storage medium may also be a component of the processor.
  • the processor and storage medium can be located in the ASIC.
  • the ASIC can be located in the base station or the terminal.
  • the processor and the storage medium may also exist in the base station or the terminal as discrete components.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product comprises one or more computer programs or instructions. When the computer program or instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are executed in whole or in part.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, a base station, user equipment or other programmable devices.
  • the computer program or instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instructions may be downloaded from a website, computer, A server or data center transmits to another website site, computer, server or data center by wired or wireless means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrating one or more available media.
  • the available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a digital video disk; and it may also be a semiconductor medium, such as a solid state disk.
  • the computer readable storage medium may be a volatile or a nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.
  • “at least one” means one or more, and “multiple” means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the contextual objects are an “or” relationship; in the formulas of this application, the character “/” indicates that the contextual objects are a "division” Relationship.

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Abstract

本申请提供一种无线通信方法及通信装置。该方法包括：在收到来自第一小区的第一切换命令后，检测到无线链路失败，该第一小区是该终端根据来自第二小区的第二切换命令切换到的小区；记录与该无线链路失败对应的连接失败信息，其中，在满足第一条件的情况下，该连接失败信息中包含该第二小区的标识信息。该方案，终端在切换后的第一小区检测到无线链路失败时，如果满足第一条件，则终端可以在连接失败信息中记录第二小区的标识信息，该连接失败信息可以准确反映导致此次无线链路失败的原因，即此次无线链路失败与第二小区有关，从而在该连接失败信息上报至基站后，基站可以根据该连接失败信息实现准确的移动性优化。

Description

无线通信方法及通信装置
相关申请的交叉引用
本申请要求在2021年07月27日提交中国专利局、申请号为202110847814.9、申请名称为“无线通信方法及通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信技术领域，尤其涉及一种无线通信方法及通信装置。
背景技术
终端接入到小区后，终端可以驻留在该小区，该小区可以为终端提供服务。然而，在某些情况下，终端在接入的小区也可能发生无线链路失败(radio link failure，RLF)。
终端在检测到发生无线链路失败后，需要记录连接失败信息，该连接失败信息中包含发生无线链路失败的小区的标识信息。
然而，在一些场景中，该连接失败信息并不能真实反映导致此次无线链路失败的原因。
发明内容
本申请提供一种无线通信方法及通信装置，用以实现准确记录连接失败信息，使得无线接入网设备可以根据该连接失败信息实现准确的移动性优化。
第一方面，本申请实施例提供一种无线通信方法，该方法可以由终端或应用于终端中的模块(如芯片)来执行。该方法包括：在收到来自第一小区的第一切换命令后，检测到无线链路失败，该第一小区是该终端根据来自第二小区的第二切换命令切换到的小区；记录与该无线链路失败对应的连接失败信息，其中，在满足第一条件的情况下，该连接失败信息中包含该第二小区的标识信息。
根据上述方案，终端在切换后的第一小区检测到无线链路失败时，如果满足第一条件，则终端可以在连接失败信息中记录第二小区的标识信息，该连接失败信息可以准确反映导致此次无线链路失败的原因，即此次无线链路失败与第二小区有关，从而在该连接失败信息上报至基站后，基站可以根据该连接失败信息实现准确的移动性优化。
在一种可能的实现方法中，该第一切换命令中包含条件切换触发条件，该第一条件包括：在满足该条件切换触发条件之前发生该无线链路失败。
根据该方案，在满足条件切换触发条件之前发生无线链路失败，表明此次无线链路失败与第一切换命令没有关系，而是可能与切换前所接入的第二小区有关系，因此终端在连接失败信息中记录第二小区的标识信息，该连接失败信息可以准确反映导致此次无线链路失败的原因。
在一种可能的实现方法中，该第一条件包括：第一时长小于或等于门限值；
其中，该第一时长是该终端收到该第二切换命令到该终端在该第一小区发生无线链路 失败之间的时长；或者，
该第一时长是该终端收到该第二切换命令到该终端收到该第一切换命令之间的时长；或者，
该第一时长是该终端执行该第二切换命令到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端执行该第二切换命令到该终端收到该第一切换命令之间的时长；或者，
该第一时长是该终端成功切换到该第一小区到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端成功切换到该第一小区到该终端收到该第一切换命令之间的时长；或者，
该第一时长是该终端完成与该第一小区的随机接入信道(random access channel，RACH)接入到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端完成与该第一小区的RACH接入到该终端收到该第一切换命令之间的时长。
根据上述方案，当第一时长小于或等于门限值，表明终端是在切换至第一小区后的一个较短时间内发生无线链路失败，因此此次无线链路失败可能与切换前的第二小区有关系，因此终端在连接失败信息中记录第二小区的标识信息，该连接失败信息可以准确反映导致此次无线链路失败的原因。
在一种可能的实现方法中，接收配置信息，该配置信息中包含该门限值。
在一种可能的实现方法中，该连接失败信息中还包含该第一时长。
根据上述方案，终端在该连接失败信息中记录该第一时长，有助于基站可以根据第一时长实现准确的移动性优化。
在一种可能的实现方法中，该第一切换命令是条件切换命令，该第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令。
在一种可能的实现方法中，在不满足该第一条件的情况下，该连接失败信息中包含第二时长和该第一小区的标识信息；其中，该第二时长是该终端收到该第一切换命令到该终端在该第一小区发生无线链路失败之间的时长。
根据上述方案，在不满足上述第一条件的情况下，表明此次无线链路失败可能与第二小区无关，而是与第一小区有关，则该连接失败信息中包含第二时长和该第一小区的标识信息，有助于基站可以根据第二时长实现准确的移动性优化。
第二方面，本申请实施例提供一种无线通信方法，该方法可以由无线接入网设备或应用于无线接入网设备中的模块(如芯片)来执行。该无线接入网设备中管理第一小区，该方法包括：接收来自终端的连接失败信息，该连接失败信息中包含第二小区的标识信息，该第二小区是该终端切换至该第一小区之前接入的小区；向该第二小区发送该连接失败信息。
根据上述方案，无线接入网设备将连接失败信息发送给与该连接失败信息有关的第二小区，从而第二小区可以根据该连接失败信息执行移动性优化。
在一种可能的实现方法中，该向该第二小区发送该连接失败信息之前，确定该第二小区不归属于该无线接入网设备。
在一种可能的实现方法中，该连接失败信息中还包含第一时长；确定该第一时长小于或等于门限值，则向该第二小区发送该连接失败信息；
其中，该第一时长是该终端收到来自该第二小区的第二切换命令到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端收到来自该第二小区的第二切换命令到该终端收到来自该第一小区的第一切换命令之间的时长；或者，
该第一时长是该终端执行来自该第二小区的第二切换命令到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端来自该第二小区的第二切换命令到该终端收到来自该第一小区的第一切换命令之间的时长；或者，
该第一时长是该终端成功切换到该第一小区到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端成功切换到该第一小区到该终端收到来自该第一小区的第一切换命令之间的时长；或者，
该第一时长是该终端完成与该第一小区的随机接入信道RACH接入到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端完成与该第一小区的RACH接入到该终端收到来自该第一小区的第一切换命令之间的时长。
在一种可能的实现方法中，该连接失败信息中还包含该门限值。
在一种可能的实现方法中，接收来自该第二小区的该门限值。
在一种可能的实现方法中，该第一切换命令是条件切换命令，该第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令。
第三方面，本申请实施例提供一种通信装置，该装置可以是终端，还可以是用于终端的芯片。该装置具有实现上述第一方面的任意实现方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第四方面，本申请实施例提供一种通信装置，该装置可以是无线接入网设备，还可以是用于无线接入网设备的芯片或模块。该装置具有实现上述第二方面的任意实现方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第五方面，本申请实施例提供一种通信装置，包括处理器和存储器；该存储器用于存储计算机指令，当该装置运行时，该处理器执行该存储器存储的计算机指令，以使该装置执行上述第一方面至第二方面中的任意实现方法。
第六方面，本申请实施例提供一种通信装置，包括用于执行上述第一方面至第二方面中的任意实现方法的各个步骤的单元或手段(means)。
第七方面，本申请实施例提供一种通信装置，包括处理器和接口电路，所述处理器用于通过接口电路与其它装置通信，并执行上述第一方面至第二方面中的任意实现方法。该处理器包括一个或多个。
第八方面，本申请实施例提供一种通信装置，包括与存储器耦合的处理器，该处理器用于调用所述存储器中存储的程序，以执行上述第一方面至第二方面中的任意实现方法。 该存储器可以位于该装置之内，也可以位于该装置之外。且该处理器可以是一个或多个。
第九方面，本申请实施例还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在通信装置上运行时，使得上述第一方面至第二方面中的任意实现方法被执行。
第十方面，本申请实施例还提供一种计算机程序产品，该计算机程序产品包括计算机程序或指令，当计算机程序或指令被通信装置运行时，使得上述第一方面至第二方面中的任意实现方法被执行。
第十一方面，本申请实施例还提供一种芯片系统，包括：处理器，用于执行上述第一方面至第二方面中的任意实现方法。
第十二方面，本申请实施例还提供一种通信系统，包括：用于实现上述第一方面任意实现方法的终端，和用于实现上述第二方面任意实现方法的无线接入网设备。
附图说明
图1为本申请实施例应用的通信系统的架构示意图；
图2为普通切换和条件切换相混合的切换场景示意图；
图3为本申请实施例提供的一种无线通信方法示意图；
图4为终端切换小区示意图；
图5为本申请实施例提供的一种通信装置示意图；
图6为本申请实施例提供的一种通信装置示意图。
具体实施方式
图1为本申请实施例应用的通信系统的架构示意图。如图1所示，通信系统1000包括无线接入网100和核心网200，可选的，通信系统1000还可以包括互联网300。其中，无线接入网100可以包括至少一个无线接入网设备(如图1中的110a和110b)，还可以包括至少一个终端(如图1中的120a-120j)。终端通过无线的方式与无线接入网设备相连，无线接入网设备通过无线或有线方式与核心网连接。核心网设备与无线接入网设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。终端和终端之间以及无线接入网设备和无线接入网设备之间可以通过有线或无线的方式相互连接。图1只是示意图，该通信系统中还可以包括其它网络设备，如还可以包括无线中继设备和无线回传设备，在图1中未画出。
无线接入网设备可以是基站(base station)、演进型基站(evolved NodeB，eNodeB)、发送接收点(transmission reception point，TRP)、第五代(5th generation，5G)移动通信系统中的下一代基站(next generation NodeB，gNB)、第六代(6th generation，6G)移动通信系统中的下一代基站、未来移动通信系统中的基站或无线保真(wireless fidelity，WiFi)系统中的接入节点等；也可以是完成基站部分功能的模块或单元，例如，可以是集中式单元(central unit，CU)，也可以是分布式单元(distributed unit，DU)。无线接入网设备可以是宏基站(如图1中的110a)，也可以是微基站或室内站(如图1中的110b)，还可以是中继节点或施主节点等。本申请的实施例对无线接入网设备所采用的具体技术和具体设备形 态不做限定。在本申请的实施例中，以基站作为无线接入网设备的一个举例进行描述。
终端也可以称为终端设备、用户设备(user equipment，UE)、移动台、移动终端等。终端可以广泛应用于各种场景，例如，设备到设备(device-to-device，D2D)、车物(vehicle to everything，V2X)通信、机器类通信(machine-type communication，MTC)、物联网(internet of things，IOT)、虚拟现实、增强现实、工业控制、自动驾驶、远程医疗、智能电网、智能家具、智能办公、智能穿戴、智能交通、智慧城市等。终端可以是手机、平板电脑、带无线收发功能的电脑、可穿戴设备、车辆、无人机、直升机、飞机、轮船、机器人、机械臂、智能家居设备等。本申请的实施例对终端所采用的具体技术和具体设备形态不做限定。
基站和终端可以是固定位置的，也可以是可移动的。基站和终端可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对基站和终端的应用场景不做限定。
基站和终端的角色可以是相对的，例如，图1中的直升机或无人机120i可以被配置成移动基站，对于那些通过120i接入到无线接入网100的终端120j来说，终端120i是基站；但对于基站110a来说，120i是终端，即110a与120i之间是通过无线空口协议进行通信的。当然，110a与120i之间也可以是通过基站与基站之间的接口协议进行通信的，此时，相对于110a来说，120i也是基站。因此，基站和终端都可以统一称为通信装置，图1中的110a和110b可以称为具有基站功能的通信装置，图1中的120a-120j可以称为具有终端功能的通信装置。
基站和终端之间、基站和基站之间、终端和终端之间可以通过授权频谱进行通信，也可以通过免授权频谱进行通信，也可以同时通过授权频谱和免授权频谱进行通信；可以通过6千兆赫兹(gigahertz，GHz)以下的频谱进行通信，也可以通过6GHz以上的频谱进行通信，还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对无线通信所使用的频谱资源不做限定。
在本申请实施例中，基站的功能也可以由基站中的模块(如芯片)来执行，也可以由包含有基站功能的控制子系统来执行。这里的包含有基站功能的控制子系统可以是智能电网、工业控制、智能交通、智慧城市等上述应用场景中的控制中心。终端的功能也可以由终端中的模块(如芯片或调制解调器)来执行，也可以由包含有终端功能的装置来执行。
在本申请实施例中，基站向终端发送下行信号或下行信息，下行信号或下行信息承载在下行信道上；终端向基站发送上行信号或上行信息，上行信号或上行信息承载在上行信道上。终端为了与基站进行通信，需要与基站控制的小区建立无线连接。与终端建立了无线连接的小区称为该终端的服务小区。当终端与该服务小区进行通信的时候，还会受到来自邻区的信号的干扰。
终端在移动过程中可以切换接入或者驻留的小区。切换场景包括但不限于条件切换(conditional handover，CHO)、普通切换(legacy/ordinary handover，legacy/ordinary HO)、双激活协议栈(dual active protocol stack，DAPS)切换。
其中，条件切换是指源基站在源链路质量较好时向终端发送条件切换配置信息。具体的，源基站可以向终端发送无线资源控制(radio resource control，RRC)消息，该RRC消息中包含条件切换配置信息，该RRC消息可以是现有的RRC消息或者是新定义的RRC消息，该新定义的RRC消息比如可以是条件RRC重配置消息(CondRRCReconfiguration) 或其它RRC消息。该条件切换配置信息中可以包含条件切换触发条件以及一个或多个候选小区的信息(如候选小区的小区全局标识(cell global identification，CGI)及频率信息，或者是候选小区的物理小区标识(physical cell identification，PCI)及频率信息)。终端在接收到该条件切换配置信息后，根据该条件切换配置信息判断候选小区是否满足条件切换触发条件，如果满足，则将该候选小区作为目标小区。然后，终端与目标小区进行随机接入过程，当随机接入成功，终端向目标小区所属的基站(即目标基站)发送RRC消息(如RRC重配置完成消息)，以通知该目标基站条件切换完成。
普通切换是终端在源小区收到切换命令后，断开与源小区的连接，再接入到目标小区的切换流程。
双激活协议栈切换是指终端在源小区收到切换命令后，接入到目标小区，但依然可以和源小区之间进行上下行数据传输，直到目标小区指示终端不再和源小区之间进行通信。
终端在完成切换之后，如果终端在目标小区发生无线链路失败(RLF)，则终端可以记录无线链路失败报告；或者在发生切换失败的情况下，终端也可以记录无线链路失败报告。终端记录无线链路失败报告后，可以向目标小区归属的基站上报无线链路失败报告。
其中，无线链路失败报告中可以包含以下内容中的一项或多项：
1)失败小区的标识信息。
如果终端在从源小区切换至目标小区之后，在目标小区发生无线链路失败，则终端记录的无线链路失败报告中包含目标小区的标识信息，这里的目标小区可以是切换之后的主小区或其它小区。
如果终端在从源小区向目标小区切换的过程中发生切换失败(handover failure，HOF)，则终端记录的无线链路失败报告中包含源小区的标识信息，这里的源小区可以是切换之前的主小区或其它小区。
其中，上述无线链路失败报告中记录的目标小区的标识信息或源小区的标识信息均可以称为失败小区的标识信息。
2)连接失败类型(connectionFailureType)。
作为示例，连接失败类型可以为无线链路失败或者切换失败。
3)最近一次向该终端发送切换命令的小区的标识信息(previouscellID)。
最近一次向终端发送切换命令的小区是源小区，该源小区可以切换之前的主小区或其它小区。
4)重建立小区的标识信息(reestablishmentCellId)。
即终端连接失败后尝试发起重建立流程的小区的标识信息。
5)连接失败时间(timeConnFailure)。
即终端最近一次收到切换命令到发生无线链路失败之间的时间。
6)失败后的时间(timeSinceFailure)。
即终端发生无线链路失败开始后的时间，可以是指从发生无线链路失败到上报无线链路失败报告之间的时间。
其中，发生无线链路失败的原因包括但不限于以下三种：
1)太迟切换(too late handover)。
当终端在某个小区的驻留时间较长之后发生无线链路失败，终端尝试和其它小区建立无线连接。这是因为长时间驻留的小区的质量可能已经下降，终端没有及时切换到其它小区，从而导致在当前接入小区发生无线链路失败。
2)太早切换(too early handover)。
当终端在源小区驻留时间较短的情况下，又从源小区成功切换到目标小区之后很快发生无线链路失败，或者在切换过程中发生切换失败，终端尝试和源小区重新建立无线连接。
3)尝试切换的小区是不合适的小区。
当终端从源小区成功切换到目标小区后很快发生无线链路失败，或者在切换过程中发生切换失败，该过程可以理解为是因为切换到了一个不合适的小区(即该目标小区)，因此终端可以尝试与除源小区及目标小区之外的其它小区重新建立无线连接。
目前，在普通切换(或者是双激活协议栈切换、条件切换)和条件切换相混合的切换场景中，当终端在完成一次普通切换(或者是双激活协议栈切换、条件切换)之后，又收到了一个切换命令，该切换命令中包含条件切换配置信息。如果在终端收到该条件切换配置信息之后的一个较短时间内发生无线链路失败，则终端记录无线链路失败报告。
根据前面描述的无线链路失败报告中包含的第3)项和第5)项内容可知，该无线链路失败报告中包含最近一次向该终端发送切换命令的小区的标识和连接失败时间，该连接失败时间即为终端收到该条件切换配置信息到发生无线链路失败之间的时间。
可以看出，终端记录的无线链路失败报告中包含的信息是与切换完成之后的目标小区相关，然而，由于终端是在收到条件切换配置信息之后的一个较短时间内发生无线链路失败，则发生无线链路失败的原因，一般是由前一次切换所导致的，但是终端记录的无线链路失败报告中并没有包含与前一次切换相关的信息，因此无线链路失败报告中记录的信息不够准确，从而导致基站在收到终端上报的无线链路失败报告之后，无法实现准确的移动性优化。
下面结合一个具体示例，对上述存在的问题进行详细说明。
图2为普通切换和条件切换相混合的切换场景示意图。终端驻留在小区0时发生第一次切换，即普通切换，其中终端从小区0切换至小区1。当终端从小区0切换到小区1之后，终端在小区1收到切换命令，该切换命令中包含条件切换配置信息，该条件切换配置信息中包含条件切换触发条件以及小区2的信息，也即该条件切换配置信息指示终端在满足条件切换触发条件后切换至小区2。假如终端在小区1收到条件切换配置信息后的较短时间内发生了无线链路失败，可以认为是终端从小区0切换至不合适的小区1造成此次无线链路失败。
在发生无线链路失败之后，终端可以记录无线链路失败报告，该无线链路失败报告中包含最近一次向该终端发送切换命令的主小区的标识，即小区1的标识信息，以及还包含连接失败时间，该连接失败时间是从在小区1收到切换命令开始到在小区1发生无线链路失败之间的时间。可以看出，该无线链路失败报告中记录的是小区1的标识信息，并没有记录小区0的标识信息。当终端向基站上报无线链路失败报告之后，由于该无线链路失败报告中不包含小区0的标识信息，导致基站无法基于该无线链路失败报告进行准确地移动性优化。
本申请实施例提供一种无线通信方法。本申请实施例提供的无线通信方法可以由终端或用于终端的模块，以及基站或用于基站的模块执行。为便于说明，以下描述中，以终端和基站执行该无线通信方法为例进行说明。
图3为本申请实施例提供的一种无线通信方法示意图。该方法包括以下步骤：
步骤301，终端在第一小区接收第一小区的第一切换命令，该第一小区是终端根据来自第二小区的第二切换命令切换到的小区。
其中，当终端接入或驻留到第二小区，第二小区归属的基站向该终端发送第二切换命令，终端根据该第二切换命令切换至第一小区。终端在切换至第一小区之后，又在第一小区接收到第一切换命令，该第一切换命令是第一小区归属的基站发送给终端的。其中，第一小区归属的基站与第二小区归属的基站可以相同，也可以不同。
图4为终端切换小区示意图。在T1时刻，终端接入到第二小区，在T2时刻，终端在第二小区收到第二切换命令。根据该第二切换命令，终端在T3时刻成功切换至第一小区，并且在T4时刻收到第一切换命令。可选的，该第二切换命令是RRC重配置消息。
步骤302，终端在收到来自第一小区的第一切换命令后，检测到无线链路失败。
参考图4，终端在收到第一切换命令之后的T5时刻，检测到无线链路失败。
步骤303，终端记录与无线链路失败对应的连接失败信息，其中，在满足第一条件的情况下，连接失败信息中包含第二小区的标识信息。
在检测到无线链路失败后，终端可以记录与无线链路失败对应的连接失败信息。
其中，在满足第一条件的情况下，该连接失败信息中包含第二小区的标识信息。可选的，在满足第一条件的情况下，该连接失败信息中还可以包含第一小区的标识信息。
根据上述方案，终端在切换后的第一小区检测到无线链路失败时，如果满足第一条件，则终端可以在连接失败信息中记录第二小区的标识信息，该连接失败信息可以准确反映导致此次无线链路失败的原因，即此次无线链路失败与第二小区有关，从而在该连接失败信息上报至基站后，基站可以根据该连接失败信息实现准确的移动性优化。
作为一种实现方法，上述第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令，上述第一切换命令是条件切换命令。
作为一种实现方法，当第一切换命令是条件切换命令，该第一切换命令中包含条件切换触发条件，上述第一条件包括：在满足条件切换触发条件之前发生无线链路失败。也即，终端接入到第一小区后，在第一小区接收到包含条件切换配置条件的第一切换命令，在满足条件切换触发条件之前发生无线链路失败，表明此次无线链路失败与第一切换命令没有关系，而是可能与切换前所接入的第二小区有关系，因此终端在连接失败信息中记录第二小区的标识信息。
作为另一种实现方法，当上述第一条件包括：第一时长小于或等于门限值。其中，该门限值可以是第二小区归属的基站通过配置信息预配置给终端的，也即第二小区归属的基站向终端发送包含该门限值的配置信息，比如在上述第二切换命令中携带该配置信息；或者该门限值是协议预定义的；或者该门限值是网管设备配置给终端的，本申请实施例对于门限值的获取方法不做限定。其中，这里的第一时长的定义方法包括但不限于以下方法1至方法8。
方法1，第一时长是终端收到第二切换命令到终端在第一小区发生无线链路失败之间的时长。
当第二切换命令是普通切换命令或双激活协议栈切换命令，第一切换命令是条件切换命令，则可以采用该方法1。
参考图4，该第一时长为T2与T5之间的时长。具体的，可以使用计时器来记录第一时长。比如，在T2时刻启动第一计时器，在T5时刻停止第一计时器，从而第一计时器记录的时长即为第一时长。再比如，在T2时刻启动第一计时器，在T4时刻停止第一计时器并启动第二计时器，在T5时刻停止第一计时器，从而第一计时器记录的时长和第二计时器记录的时长之和，即为第一时长。
方法2，第一时长是终端收到第二切换命令到终端收到第一切换命令之间的时长。
当第二切换命令是普通切换命令或双激活协议栈切换命令，第一切换命令是条件切换命令，则可以采用该方法2。
参考图4，该第一时长为T2与T4之间的时长。具体的，可以使用计时器来记录第一时长。比如，在T2时刻启动第一计时器，在T4时刻停止第一计时器，从而第一计时器记录的时长即为第一时长。再比如，在T2时刻启动第一计时器，在T4时刻启动第二计时器，在T5时刻停止第一计时器和第二计时器，从而第一计时器记录的时长与第二计时器记录的时长的差值，即为第一时长。
方法3，第一时长是终端执行第二切换命令到终端在第一小区发生无线链路失败之间的时长。
当第二切换命令是条件切换命令，第一切换命令是条件切换命令，则可以采用该方法3。
参考图4，该第一时长为T7与T5之间的时长。具体的，可以使用计时器来记录第一时长。比如，在T7时刻启动第一计时器，在T5时刻停止第一计时器，从而第一计时器记录的时长即为第一时长。再比如，在T7时刻启动第一计时器，在T4时刻停止第一计时器并启动第二计时器，在T5时刻停止第二计时器，从而第一计时器记录的时长与第二计时器记录的时长之和，即为第一时长。
方法4，第一时长是终端执行第二切换命令到终端收到第一切换命令之间的时长。
当第二切换命令是条件切换命令，第一切换命令是条件切换命令，则可以采用该方法4。
参考图4，该第一时长为T7与T4之间的时长。具体的，可以使用计时器来记录第一时长。比如，在T7时刻启动第一计时器，在T4时刻停止第一计时器，从而第一计时器记录的时长即为第一时长。再比如，在T7时刻启动第一计时器，在T4时刻启动第二计时器，在T5时刻停止第一计时器和第二计时器，从而第一计时器记录的时长与第二计时器记录的时长的差值，即为第一时长。
方法5，第一时长是终端成功切换到第一小区到终端在第一小区发生无线链路失败之间的时长。
当第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令，第一切换命令是条件切换命令，则可以采用该方法5。
参考图4，该第一时长为T3与T5之间的时长。具体的，可以使用计时器来记录第一时长。比如，在T3时刻启动第一计时器，在T5时刻停止第一计时器，从而第一计时器记录的时长即为第一时长。再比如，在T3时刻启动第一计时器，在T4时刻停止第一计时器并启动第二计时器，在T5时刻停止第二计时器，从而第一计时器记录的时长与第二计时 器记录的时长之和，即为第一时长。
方法6，第一时长是终端成功切换到第一小区到终端收到第一切换命令之间的时长。
当第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令，第一切换命令是条件切换命令，则可以采用该方法6。
参考图4，该第一时长为T3与T4之间的时长。具体的，可以使用计时器来记录第一时长。比如，在T3时刻启动第一计时器，在T4时刻停止第一计时器，从而第一计时器记录的时长即为第一时长。再比如，在T3时刻启动第一计时器，在T4时刻启动第二计时器，在T5时刻停止第一计时器和第二计时器，从而第一计时器记录的时长与第二计时器记录的时长的差值，即为第一时长。
方法7，第一时长是终端完成与第一小区的RACH接入到终端在第一小区发生无线链路失败之间的时长。
当第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令，第一切换命令是条件切换命令，则可以采用该方法5。
参考图4，该第一时长为T8与T5之间的时长。具体的，可以使用计时器来记录第一时长。比如，在T8时刻启动第一计时器，在T5时刻停止第一计时器，从而第一计时器记录的时长即为第一时长。再比如，在T8时刻启动第一计时器，在T4时刻停止第一计时器并启动第二计时器，在T5时刻停止第二计时器，从而第一计时器记录的时长与第二计时器记录的时长之和，即为第一时长。
方法8，第一时长是终端完成与第一小区的RACH接入到终端收到第一切换命令之间的时长。
当第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令，第一切换命令是条件切换命令，则可以采用该方法5。
参考图4，该第一时长为T8与T4之间的时长。具体的，可以使用计时器来记录第一时长。比如，在T8时刻启动第一计时器，在T4时刻停止第一计时器，从而第一计时器记录的时长即为第一时长。再比如，在T8时刻启动第一计时器，在T4时刻启动第二计时器，在T5时刻停止第一计时器和第二计时器，从而第一计时器记录的时长与第二计时器记录的时长的差值，即为第一时长。
根据上述方法1至方法8中的任一实现方法，当第一时长小于或等于门限值，表明终端是在切换至第一小区后的一个较短时间内发生无线链路失败，因此此次无线链路失败很可能是与切换前的第二小区有关系，因此终端在连接失败信息中记录第二小区的标识信息。
作为一种实现方法，在连接失败信息中记录第二小区的标识信息的情况下，终端还可以在该连接失败信息中记录该第一时长，从而有助于基站可以根据第一时长实现准确的移动性优化。
作为一种实现方法，在不满足上述第一条件的情况下，表明此次无线链路失败可能与第二小区无关，而是与第一小区有关，则终端可以在连接失败信息中记录第一小区的标识信息和第二时长，该第二时长是终端收到第一切换命令到终端在第一小区发生无线链路失败之间的时长，也即图4中的T4与T5之间的时长。
根据前面的描述可知，在无线链路失败报告中可以携带previouscellID和timeConnFailure。其中，previouscellID表示最近一次向该终端发送切换命令的小区的标识 信息，在该实施例中，previouscellID即为第一小区的标识信息。timeConnFailure表示终端最近一次收到切换命令到发生无线链路失败之间的时间，参考图4，timeConnFailure即为T4与T5之间的时长，也称为第二时长。
结合上述无线链路失败报告的上报方式，下面介绍本申请实施例中上报连接失败信息的三种不同实现方法。
实现方法1，新增一个无线链路失败报告，该无线链路失败报告中包含连接失败信息，该连接失败信息包括第二小区的标识信息，可选的，连接失败信息还包括第一时长。
根据该方法，终端可以上报两个无线链路失败报告，其中一个无线链路失败报告与现有技术的无线链路失败报告相同，即包含第一小区的标识信息和第二时长，另一个无线链路失败报告是新增的无线链路失败报告，该无线链路失败报告中包含第二小区的标识信息，可选的，还包含第一时长。
实现方法2，在现有的无线链路失败报告中新增字段，使用新增字段携带第二小区的标识信息，可选的，还使用新增字段携带第一时长。
根据该方法，终端上报的无线链路失败报告中既包含第一小区的标识信息和第二时长，还包含第二小区的标识信息，可选的，还包含第一时长。其中，第一小区的标识信息和第二时长是分别使用previouscellID字段和timeConnFailure字段进行记录，而第二小区的标识信息和第一时长是使用新增字段进行记录。
实现方法3，使用现有的无线链路失败报告中的字段记录第二小区的标识信息，可选的，还记录第一时长。
根据该方法，终端上报的无线链路失败报告中previouscellID字段不再用于记录第一小区的标识信息，而是用于记录第二小区的标识信息。相应地，timeConnFailure字段不再用于记录第二时长，而是用于记录第一时长。
可选的，在上述步骤303之后，还包括以下步骤304至步骤305。
步骤304，终端上报连接失败信息。
由于终端是在第一小区检测到无线链路失败，因此终端记录的连接失败信息可以上报给第一小区归属的基站。
作为一种实现方法，终端可以通过终端与第一小区归属的基站之间的空口，向第一小区归属的基站发送上述连接失败信息。
作为另一种实现方法，终端可以通过终端与其它基站之间的空口，向该其它基站发送上述连接失败信息，然后由该其它基站将连接失败信息发送给第一小区归属的基站。
作为一种实现方法，终端上报连接失败信息时，可以将连接失败信息携带于无线链路失败报告(RLF报告)中上报至第一小区归属的基站。
步骤305，第一小区归属的基站向第二小区归属的基站发送连接失败信息。
第一小区归属的基站在收到终端上报的连接失败信息后，获取连接失败信息中的第二小区的标识信息，当第一小区归属的基站确定该第二小区不归属该基站，也即该第二小区与第一小区不归属同一基站，则第一小区归属的基站向第二小区归属的基站发送该连接失败信息。
根据上述步骤304至步骤305，第一小区归属的基站将连接失败信息发送给与该连接失败信息有关的第二小区归属的基站，从而第二小区归属的基站可以根据该连接失败信息 执行移动性优化。
作为一种实现方法，当连接失败信息中包含上述第一时长，则第一小区归属的基站向第二小区归属的基站发送该连接失败信息之前，还判断该第一时长是否小于或等于门限值，该门限值与前述由终端使用的门限值相同。如果第一时长小于或等于该门限值，表明此次无线链路失败与第二小区有关，则第一小区归属的基站向第二小区归属的基站发送该连接失败信息。如果第一时长大于该门限值，则第一小区归属的基站可以不向第二小区归属的基站发送该连接失败信息。
其中，第一小区归属的基站获取门限值的方法包括但不限于：协议预定义门限值、第一小区归属的基站预先生成门限值、网管设备为第一小区归属的基站预先配置门限值、第二小区归属的基站向第一小区归属的基站发送门限值或者是终端上报的连接失败信息中携带门限值。
第二小区归属的基站收到连接失败信息之后，可以做相应的移动性优化。示例性地，移动性优化的方法可以是修改从第二小区切换到第一小区的切换门限。
可以理解的是，为了实现上述实施例中功能，基站和终端包括了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本申请中所公开的实施例描述的各示例的单元及方法步骤，本申请能够以硬件或硬件和计算机软件相结合的形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用场景和设计约束条件。
图5和图6为本申请的实施例提供的可能的通信装置的结构示意图。这些通信装置可以用于实现上述方法实施例中终端或基站的功能，因此也能实现上述方法实施例所具备的有益效果。在本申请的实施例中，该通信装置可以是如图1所示的终端120a-120j中的一个，也可以是如图1所示的基站110a或110b，还可以是应用于终端或基站的模块(如芯片)。
如图5所示，通信装置500包括处理单元510和收发单元520。通信装置500用于实现上述图3中所示的方法实施例中终端或基站的功能。
在第一个实施例中，当通信装置500用于实现图3所示的方法实施例中终端的功能时：收发单元520，用于接收来自第一小区的第一切换命令；处理单元510，用于在该收发单元520收到来自该第一小区的该第一切换命令后，检测到无线链路失败，该第一小区是终端根据来自第二小区的第二切换命令切换到的小区；该处理单元510，还用于记录与该无线链路失败对应的连接失败信息，其中，在满足第一条件的情况下，该连接失败信息中包含该第二小区的标识信息。
在一种可能的实现方法中，该第一切换命令中包含条件切换触发条件，该第一条件包括：在满足该条件切换触发条件之前发生该无线链路失败。
在一种可能的实现方法中，该第一条件包括：第一时长小于或等于门限值；
其中，该第一时长是该终端收到该第二切换命令到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端收到该第二切换命令到该终端收到该第一切换命令之间的时长；或者，
该第一时长是该终端执行该第二切换命令到该终端在该第一小区发生无线链路失败 之间的时长；或者，
该第一时长是该终端执行该第二切换命令到该终端收到该第一切换命令之间的时长；或者，
该第一时长是该终端成功切换到该第一小区到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端成功切换到该第一小区到该终端收到该第一切换命令之间的时长；或者，
该第一时长是该终端完成与该第一小区的随机接入信道RACH接入到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端完成与该第一小区的RACH接入到该终端收到该第一切换命令之间的时长。
在一种可能的实现方法中，该收发单元520，还用于接收配置信息，该配置信息中包含该门限值。
在一种可能的实现方法中，该连接失败信息中还包含该第一时长。
在一种可能的实现方法中，该第一切换命令是条件切换命令，该第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令。
在一种可能的实现方法中，在不满足该第一条件的情况下，该连接失败信息中包含第二时长和该第一小区的标识信息；其中，该第二时长是该终端收到该第一切换命令到该终端在该第一小区发生无线链路失败之间的时长。
在第二个实施例中，当通信装置500用于实现图3所示的方法实施例中基站的功能时：收发单元520，用于接收来自终端的连接失败信息，该连接失败信息中包含第二小区的标识信息，该第二小区是该终端切换至该第一小区之前接入的小区；以及，向该第二小区发送该连接失败信息。
在一种可能的实现方法中，处理单元510，用于在该收发单元520向该第二小区发送该连接失败信息之前，确定该第二小区不归属于该无线接入网设备。
在一种可能的实现方法中，该连接失败信息中还包含第一时长；该收发单元520，具体用于当该处理单元510确定该第一时长小于或等于门限值，则向该第二小区发送该连接失败信息；
其中，该第一时长是该终端收到来自该第二小区的第二切换命令到该终端在该第一小区发生无线链路失败之间的时长；
或者，该第一时长是该终端收到来自该第二小区的第二切换命令到该终端收到来自该第一小区的第一切换命令之间的时长；或者，
该第一时长是该终端执行来自该第二小区的第二切换命令到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端来自该第二小区的第二切换命令到该终端收到来自该第一小区的第一切换命令之间的时长；或者，
该第一时长是该终端成功切换到该第一小区到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端成功切换到该第一小区到该终端收到来自该第一小区的第一切换命令之间的时长；或者，
该第一时长是该终端完成与该第一小区的随机接入信道RACH接入到该终端在该第一小区发生无线链路失败之间的时长；或者，
该第一时长是该终端完成与该第一小区的RACH接入到该终端收到来自该第一小区的第一切换命令之间的时长。
在一种可能的实现方法中，该连接失败信息中还包含该门限值。
在一种可能的实现方法中，该收发单元520，还用于接收来自该第二小区的该门限值。
在一种可能的实现方法中，该第一切换命令是条件切换命令，该第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令。
有关上述处理单元510和收发单元520更详细的描述，可以直接参考图3所示的方法实施例中相关描述直接得到，这里不加赘述。
如图6所示，通信装置600包括处理器610和接口电路620。处理器610和接口电路620之间相互耦合。可以理解的是，接口电路620可以为收发器或输入输出接口。可选的，通信装置600还可以包括存储器630，用于存储处理器610执行的指令或存储处理器610运行指令所需要的输入数据或存储处理器610运行指令后产生的数据。
当通信装置600用于实现图3所示的方法时，处理器610用于实现上述处理单元510的功能，接口电路620用于实现上述收发单元520的功能。
当上述通信装置为应用于终端的芯片时，该终端芯片实现上述方法实施例中终端的功能。该终端芯片从终端中的其它模块(如射频模块或天线)接收信息，该信息是基站发送给终端的；或者，该终端芯片向终端中的其它模块(如射频模块或天线)发送信息，该信息是终端发送给基站的。
当上述通信装置为应用于基站的模块时，该基站模块实现上述方法实施例中基站的功能。该基站模块从基站中的其它模块(如射频模块或天线)接收信息，该信息是终端发送给基站的；或者，该基站模块向基站中的其它模块(如射频模块或天线)发送信息，该信息是基站发送给终端的。这里的基站模块可以是基站的基带芯片，也可以是DU或其他模块，这里的DU可以是开放式无线接入网(open radio access network，O-RAN)架构下的DU。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元(Central Processing Unit，CPU)，还可以是其它通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其它可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请的实施例中的方法步骤可以通过硬件的方式来实现，也可以由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器、闪存、只读存储器、可编程只读存储器、可擦除可编程只读存储器、电可擦除可编程只读存储器、寄存器、硬盘、移动硬盘、致密光盘只读存储器(compact disc read-only memory，CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于基站或终端中。当然，处理器和存储介质也可以作为分立组件存在于基 站或终端中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时，全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、基站、用户设备或者其它可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机程序或指令可以从一个网站站点、计算机、服务器或数据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，数字视频光盘；还可以是半导体介质，例如，固态硬盘。该计算机可读存储介质可以是易失性或非易失性存储介质，或可包括易失性和非易失性两种类型的存储介质。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。在本申请的文字描述中，字符“/”，一般表示前后关联对象是一种“或”的关系；在本申请的公式中，字符“/”，表示前后关联对象是一种“相除”的关系。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定。

Claims (30)

  1. 一种无线通信方法，应用于终端，其特征在于，包括：
    在收到来自第一小区的第一切换命令后，检测到无线链路失败，所述第一小区是所述终端根据来自第二小区的第二切换命令切换到的小区；
    记录与所述无线链路失败对应的连接失败信息，其中，在满足第一条件的情况下，所述连接失败信息中包含所述第二小区的标识信息。
  2. 如权利要求1所述的方法，其特征在于，
    所述第一切换命令中包含条件切换触发条件，所述第一条件包括：在满足所述条件切换触发条件之前发生所述无线链路失败。
  3. 如权利要求1或2所述的方法，其特征在于，
    所述第一条件包括：第一时长小于或等于门限值；
    其中，所述第一时长是所述终端收到所述第二切换命令到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端收到所述第二切换命令到所述终端收到所述第一切换命令之间的时长；或者，
    所述第一时长是所述终端执行所述第二切换命令到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端执行所述第二切换命令到所述终端收到所述第一切换命令之间的时长；或者，
    所述第一时长是所述终端成功切换到所述第一小区到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端成功切换到所述第一小区到所述终端收到所述第一切换命令之间的时长；或者，
    所述第一时长是所述终端完成与所述第一小区的随机接入信道RACH接入到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端完成与所述第一小区的RACH接入到所述终端收到所述第一切换命令之间的时长。
  4. 如权利要求3所述的方法，其特征在于，所述方法还包括：
    接收配置信息，所述配置信息中包含所述门限值。
  5. 如权利要求3或4所述的方法，其特征在于，所述连接失败信息中还包含所述第一时长。
  6. 如权利要求1所述的方法，其特征在于，所述第一切换命令是条件切换命令，所述第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令。
  7. 如权利要求1至6中任一项所述的方法，其特征在于，
    在不满足所述第一条件的情况下，所述连接失败信息中包含第二时长和所述第一小区的标识信息；
    其中，所述第二时长是所述终端收到所述第一切换命令到所述终端在所述第一小区发生无线链路失败之间的时长。
  8. 一种无线通信方法，应用于无线接入网设备，所述无线接入网设备管理第一小区，其特征在于，包括：
    接收来自终端的连接失败信息，所述连接失败信息中包含第二小区的标识信息，所述第二小区是所述终端切换至所述第一小区之前接入的小区；
    向所述第二小区发送所述连接失败信息。
  9. 如权利要求8所述的方法，其特征在于，所述向所述第二小区发送所述连接失败信息之前，还包括：
    确定所述第二小区不归属于所述无线接入网设备。
  10. 如权利要求8或9所述的方法，其特征在于，所述连接失败信息中还包含第一时长；
    所述向所述第二小区发送所述连接失败信息，包括：
    确定所述第一时长小于或等于门限值，则向所述第二小区发送所述连接失败信息；
    其中，所述第一时长是所述终端收到来自所述第二小区的第二切换命令到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端收到来自所述第二小区的第二切换命令到所述终端收到来自所述第一小区的第一切换命令之间的时长；或者，
    所述第一时长是所述终端执行来自所述第二小区的第二切换命令到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端来自所述第二小区的第二切换命令到所述终端收到来自所述第一小区的第一切换命令之间的时长；或者，
    所述第一时长是所述终端成功切换到所述第一小区到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端成功切换到所述第一小区到所述终端收到来自所述第一小区的第一切换命令之间的时长；或者，
    所述第一时长是所述终端完成与所述第一小区的随机接入信道RACH接入到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端完成与所述第一小区的RACH接入到所述终端收到来自所述第一小区的第一切换命令之间的时长。
  11. 如权利要求10所述的方法，其特征在于，所述连接失败信息中还包含所述门限值。
  12. 如权利要求10所述的方法，其特征在于，所述方法还包括：
    接收来自所述第二小区的所述门限值。
  13. 如权利要求10至12中任一项所述的方法，其特征在于，所述第一切换命令是条件切换命令，所述第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令。
  14. 一种通信装置，其特征在于，包括收发单元和处理单元；
    收发单元，用于接收来自第一小区的第一切换命令；
    处理单元，用于在所述收发单元收到来自所述第一小区的所述第一切换命令后，检测到无线链路失败，所述第一小区是终端根据来自第二小区的第二切换命令切换到的小区；
    所述处理单元，还用于记录与所述无线链路失败对应的连接失败信息，其中，在满足第一条件的情况下，所述连接失败信息中包含所述第二小区的标识信息。
  15. 如权利要求14所述的装置，其特征在于，
    所述第一切换命令中包含条件切换触发条件，所述第一条件包括：在满足所述条件切 换触发条件之前发生所述无线链路失败。
  16. 如权利要求14或15所述的装置，其特征在于，
    所述第一条件包括：第一时长小于或等于门限值；
    其中，所述第一时长是所述终端收到所述第二切换命令到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端收到所述第二切换命令到所述终端收到所述第一切换命令之间的时长；或者，
    所述第一时长是所述终端执行所述第二切换命令到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端执行所述第二切换命令到所述终端收到所述第一切换命令之间的时长；或者，
    所述第一时长是所述终端成功切换到所述第一小区到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端成功切换到所述第一小区到所述终端收到所述第一切换命令之间的时长；或者，
    所述第一时长是所述终端完成与所述第一小区的随机接入信道RACH接入到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端完成与所述第一小区的RACH接入到所述终端收到所述第一切换命令之间的时长。
  17. 如权利要求16所述的装置，其特征在于，所述收发单元，还用于接收配置信息，所述配置信息中包含所述门限值。
  18. 如权利要求16或17所述的装置，其特征在于，所述连接失败信息中还包含所述第一时长。
  19. 如权利要求14所述的装置，其特征在于，所述第一切换命令是条件切换命令，所述第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令。
  20. 如权利要求14至19中任一项所述的装置，其特征在于，
    在不满足所述第一条件的情况下，所述连接失败信息中包含第二时长和所述第一小区的标识信息；
    其中，所述第二时长是所述终端收到所述第一切换命令到所述终端在所述第一小区发生无线链路失败之间的时长。
  21. 一种通信装置，应用于无线接入网设备，所述无线接入网设备管理第一小区，其特征在于，包括：
    收发单元，用于接收来自终端的连接失败信息，所述连接失败信息中包含第二小区的标识信息，所述第二小区是所述终端切换至所述第一小区之前接入的小区；以及，向所述第二小区发送所述连接失败信息。
  22. 如权利要求21所述的装置，其特征在于，所述装置包括处理单元，用于在所述收发单元向所述第二小区发送所述连接失败信息之前，确定所述第二小区不归属于所述无线接入网设备。
  23. 如权利要求21或22所述的装置，其特征在于，所述连接失败信息中还包含第一时长；所述装置包括处理单元；
    所述收发单元，具体用于当所述处理单元确定所述第一时长小于或等于门限值，则向所述第二小区发送所述连接失败信息；
    其中，所述第一时长是所述终端收到来自所述第二小区的第二切换命令到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端收到来自所述第二小区的第二切换命令到所述终端收到来自所述第一小区的第一切换命令之间的时长；或者，
    所述第一时长是所述终端执行来自所述第二小区的第二切换命令到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端来自所述第二小区的第二切换命令到所述终端收到来自所述第一小区的第一切换命令之间的时长；或者，
    所述第一时长是所述终端成功切换到所述第一小区到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端成功切换到所述第一小区到所述终端收到来自所述第一小区的第一切换命令之间的时长；或者，
    所述第一时长是所述终端完成与所述第一小区的随机接入信道RACH接入到所述终端在所述第一小区发生无线链路失败之间的时长；或者，
    所述第一时长是所述终端完成与所述第一小区的RACH接入到所述终端收到来自所述第一小区的第一切换命令之间的时长。
  24. 如权利要求23所述的装置，其特征在于，所述连接失败信息中还包含所述门限值。
  25. 如权利要求23所述的装置，其特征在于，所述收发单元，还用于接收来自所述第二小区的所述门限值。
  26. 如权利要求23至25中任一项所述的装置，其特征在于，所述第一切换命令是条件切换命令，所述第二切换命令是普通切换命令、双激活协议栈切换命令或条件切换命令。
  27. 一种无线接入网设备，其特征在于，包括如权利要求21至26中任一项所述的通信装置。
  28. 一种通信装置，其特征在于，包括处理器和接口电路，所述接口电路用于接收来自所述通信装置之外的其它通信装置的信号并传输至所述处理器或将来自所述处理器的信号发送给所述通信装置之外的其它通信装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求1至7中任一项所述的方法，或用于实现如权利要求8至13中任一项所述的方法。
  29. 一种计算机程序产品，其特征在于，包括计算机程序，当所述计算机程序被通信装置执行时，实现如权利要求1至13中任一项所述的方法。
  30. 一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序或指令，当所述计算机程序或指令被通信装置执行时，实现如权利要求1至13中任一项所述的方法。
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WO2013134955A1 (zh) * 2012-03-16 2013-09-19 富士通株式会社 判定切换失败类型的方法及其装置
CN110831081A (zh) * 2018-08-10 2020-02-21 展讯通信（上海）有限公司 切换信息上报、切换鲁棒性优化方法及装置、存储介质、用户设备、基站
WO2021029649A1 (en) * 2019-08-12 2021-02-18 Samsung Electronics Co., Ltd. Method and apparatus for handling conditional handover (cho) in a wireless communication network

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CN102316501A (zh) * 2010-07-09 2012-01-11 中兴通讯股份有限公司 无线链路失败原因的确定、切换参数阈值调整方法及装置
WO2013134955A1 (zh) * 2012-03-16 2013-09-19 富士通株式会社 判定切换失败类型的方法及其装置
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