WO2023108474A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2023108474A1
WO2023108474A1 PCT/CN2021/138308 CN2021138308W WO2023108474A1 WO 2023108474 A1 WO2023108474 A1 WO 2023108474A1 CN 2021138308 W CN2021138308 W CN 2021138308W WO 2023108474 A1 WO2023108474 A1 WO 2023108474A1
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WIPO (PCT)
Prior art keywords
sdt
parameter
terminal device
indication information
random access
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Application number
PCT/CN2021/138308
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English (en)
Chinese (zh)
Inventor
林雪
刘洋
尤心
Original Assignee
Oppo广东移动通信有限公司
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.)
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN202180103249.3A priority Critical patent/CN118104369A/zh
Priority to PCT/CN2021/138308 priority patent/WO2023108474A1/fr
Publication of WO2023108474A1 publication Critical patent/WO2023108474A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present application relates to the communication field, and in particular to a communication method and device.
  • a small data transmission (small data transmission, SDT) scheme is proposed, so that the terminal device can complete the SDT process in the inactive state.
  • Embodiments of the present application provide a communication method and device to realize process recording and reporting when the SDT process is successfully completed.
  • the embodiment of the present application provides a communication method applied to a terminal device, including:
  • the SDT abnormality includes at least one of the following:
  • the duration between the moment when the SDT process is completed and the overtime of the SDT failure detection timer is less than or equal to the first duration
  • a random access problem occurs on the terminal device
  • the terminal device triggers a random access process during the SDT process based on pre-configured resources
  • the terminal device triggers a random access-based SDT process when pre-configured resources are configured.
  • the first duration is a duration configured by the network device.
  • the SDT process parameters include at least one of the following:
  • a first parameter where the first parameter is a configuration parameter that triggers the SDT process
  • a second parameter where the second parameter is a radio link parameter of the SDT process
  • a third parameter where the third parameter is a resource configuration parameter of the SDT process.
  • the first parameter includes at least one of the following:
  • First indication information where the first indication information is used to indicate whether new SDT data arrives during the SDT process
  • the duration of the SDT failure detection timer is the duration of the SDT failure detection timer.
  • the second parameter includes at least one of the following:
  • the second indication information is used to indicate whether the terminal device executes the SDT process multiple times
  • third indication information where the third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources
  • Fourth indication information where the fourth indication information is used to indicate whether a random access problem occurs on the terminal device.
  • the downlink reference signal is a synchronization signal block SSB and/or a positioning reference signal PRS.
  • the second indication information includes resource configuration information of the SDT process based on pre-configured resources; or, the second indication information includes resource configuration information of the SDT process based on random access .
  • the third parameter includes fifth indication information, where:
  • the fifth indication information is used to indicate whether the terminal device triggers an SDT process based on random access when pre-configured resources are configured.
  • the method also includes:
  • the terminal device receives a first radio resource control RRC message from the network device while the SDT failure detection timer is running.
  • the first RRC message includes any of the following:
  • the start time of the SDT failure detection timer is the time when the terminal device initiates the SDT process
  • the end time of the SDT failure detection timer is the time when the terminal device receives the first RRC message.
  • the reporting the SDT process parameters to the network device includes:
  • the terminal information response message includes the SDT process parameters
  • the terminal information response message is a response message to the terminal information request message.
  • the embodiment of the present application provides a communication method applied to a network device, including:
  • An SDT process parameter reported by the terminal device is received, where the SDT process parameter indicates that the SDT process successfully completed by the terminal device includes an SDT exception.
  • the SDT process parameters include at least one of the following:
  • a first parameter where the first parameter is a configuration parameter that triggers the SDT process
  • a second parameter where the second parameter is a radio link parameter of the SDT process
  • a third parameter where the third parameter is a resource configuration parameter of the SDT process.
  • the first parameter includes at least one of the following:
  • First indication information where the first indication information is used to indicate whether new SDT data arrives during the SDT process
  • the duration of the SDT failure detection timer is the duration of the SDT failure detection timer.
  • the second parameter includes at least one of the following:
  • the second indication information is used to indicate whether the terminal device executes the SDT process multiple times
  • third indication information where the third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources
  • Fourth indication information where the fourth indication information is used to indicate whether a random access problem occurs on the terminal device.
  • the downlink reference signal is SSB and/or PRS.
  • the second indication information includes resource configuration information of the SDT process based on pre-configured resources; or, the second indication information includes resource configuration information of the SDT process based on random access .
  • the third parameter includes fifth indication information, where:
  • the fifth indication information is used to indicate whether the terminal device triggers an SDT process based on random access when pre-configured resources are configured.
  • the receiving the SDT process parameters reported by the terminal device includes:
  • the terminal information response message includes the SDT process parameters, and the terminal information response message is a response message to the terminal information request message.
  • the embodiment of the present application provides a communication device, including:
  • a recording module configured to record SDT process parameters when an SDT exception is included in a successfully completed SDT process
  • a reporting module configured to report the SDT process parameters to the network device.
  • the SDT abnormality includes at least one of the following:
  • the duration between the moment when the SDT process is completed and the overtime of the SDT failure detection timer is less than or equal to the first duration
  • a random access problem occurs on the terminal device
  • the terminal device triggers a random access process during the SDT process based on pre-configured resources
  • the terminal device triggers a random access-based SDT process when pre-configured resources are configured.
  • the first duration is a duration configured by the network device.
  • the SDT process parameters include at least one of the following:
  • a first parameter where the first parameter is a configuration parameter that triggers the SDT process
  • a second parameter where the second parameter is a radio link parameter of the SDT process
  • a third parameter where the third parameter is a resource configuration parameter of the SDT process.
  • the first parameter includes at least one of the following:
  • First indication information where the first indication information is used to indicate whether new SDT data arrives during the SDT process
  • the duration of the SDT failure detection timer is the duration of the SDT failure detection timer.
  • the second parameter includes at least one of the following:
  • the second indication information is used to indicate whether the terminal device executes the SDT process multiple times
  • third indication information where the third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources
  • Fourth indication information where the fourth indication information is used to indicate whether a random access problem occurs on the terminal device.
  • the downlink reference signal is SSB and/or PRS.
  • the second indication information includes resource configuration information of the SDT process based on pre-configured resources; or, the second indication information includes resource configuration information of the SDT process based on random access .
  • the third parameter includes fifth indication information, where:
  • the fifth indication information is used to indicate whether the terminal device triggers an SDT process based on random access when pre-configured resources are configured.
  • a receiving module is also included, and the receiving module is used for:
  • a first RRC message is received from the network device while an SDT failure detection timer is running.
  • the first RRC message includes any of the following:
  • the start time of the SDT failure detection timer is the time when the terminal device initiates the SDT process
  • the end time of the SDT failure detection timer is the time when the terminal equipment receives the first RRC message.
  • the reporting module is specifically configured to:
  • the terminal information response message includes the SDT process parameters
  • the terminal information response message is a response message to the terminal information request message.
  • the embodiment of the present application provides a communication device, including:
  • the receiving module is configured to receive an SDT process parameter reported by the terminal device, where the SDT process parameter indicates that the SDT process successfully completed by the terminal device includes an SDT exception.
  • the SDT process parameters include at least one of the following:
  • a first parameter where the first parameter is a configuration parameter that triggers the SDT process
  • a second parameter where the second parameter is a radio link parameter of the SDT process
  • a third parameter where the third parameter is a resource configuration parameter of the SDT process.
  • the first parameter includes at least one of the following:
  • First indication information where the first indication information is used to indicate whether new SDT data arrives during the SDT process
  • the duration of the SDT failure detection timer is the duration of the SDT failure detection timer.
  • the second parameter includes at least one of the following:
  • the second indication information is used to indicate whether the terminal device executes the SDT process multiple times
  • third indication information where the third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources
  • Fourth indication information where the fourth indication information is used to indicate whether a random access problem occurs on the terminal device.
  • the downlink reference signal is SSB and/or PRS.
  • the second indication information includes resource configuration information of the SDT process based on pre-configured resources; or, the second indication information includes resource configuration information of the SDT process based on random access .
  • the third parameter includes fifth indication information, where:
  • the fifth indication information is used to indicate whether the terminal device triggers an SDT process based on random access when pre-configured resources are configured.
  • the receiving module is specifically configured to:
  • the terminal information response message includes the SDT process parameters, and the terminal information response message is a response message to the terminal information request message.
  • the embodiment of the present application provides a terminal device, including: a transceiver, a processor, and a memory;
  • the memory stores computer-executable instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method according to any one of the first aspect.
  • the embodiment of the present application provides a network device, including: a transceiver, a processor, and a memory;
  • the memory stores computer-executable instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method according to any one of the second aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement the first aspect or The communication method according to any one of the second aspect.
  • an embodiment of the present application provides a computer program product, including a computer program.
  • the computer program is executed by a processor, the communication method according to any one of the first aspect or the second aspect is implemented.
  • the terminal device when the successfully completed SDT process includes an SDT abnormality, the terminal device records the SDT process parameters, and then reports the SDT process parameters to the network device.
  • the SDT process includes an SDT exception, it indicates that although the SDT process is successfully completed, there are problems to be optimized in the SDT process. Therefore, the terminal device records the SDT process parameters and reports them to the network device, so that the network device can discover SDT according to the SDT process parameters. problems in the process, thereby helping network devices to optimize SDT resources and parameter configurations.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application
  • Fig. 2 is a kind of signaling flowchart based on SON reporting information
  • FIG. 3 is a schematic flowchart of a communication method provided in an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • Terminal equipment usually has wireless transceiver function, terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle; can also be deployed on water (such as ships, etc.); can also be deployed in the air (such as aircraft, balloons, etc.) and satellites, etc.).
  • the terminal device may be a mobile phone, a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, referred to as VR) terminal device, an augmented reality (augmented reality, referred to as AR) terminal device, an industrial Wireless terminals in industrial control, vehicle terminal equipment, wireless terminals in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, Wireless terminal devices in transportation safety, wireless terminal devices in smart city, wireless terminal devices in smart home, wearable terminal devices, etc.
  • VR virtual reality
  • AR augmented reality terminal device
  • the terminal equipment involved in the embodiments of the present application may also be referred to as terminal, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station , remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc.
  • Terminal equipment can also be fixed or mobile.
  • Network device generally has a wireless transceiver function, and the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network equipment can be a satellite or a balloon station.
  • the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc.
  • LEO low earth orbit
  • MEO medium earth orbit
  • GEO geosynchronous earth orbit
  • HEO high elliptical orbit
  • the orbital altitude of LEO satellites usually ranges from 500 km to 1500 km, and the orbital period (period around the earth) is about 1.5 hours to 2 hours.
  • the signal propagation delay of single-hop communication between users is about 20ms, and the single-hop communication delay between users refers to the transmission delay between terminal equipment and network equipment, or the delay between network equipment and transmission equipment.
  • the maximum visible time of the satellite is about 20 minutes. The maximum visible time refers to the longest time that the beam of the satellite covers a certain area on the ground.
  • the LEO satellite is moving relative to the ground. As the satellite moves, the ground area it covers is also change.
  • the signal propagation distance of LEO satellites is short, the link loss is small, and the requirements for the transmission power of terminal equipment are not high.
  • the orbital altitude of GEO satellites is usually 35786km, and the orbital period is 24 hours.
  • the signal propagation delay for single-hop communication between users is about 250ms.
  • satellites can use multiple beams to cover the ground.
  • a satellite can form dozens or hundreds of beams to cover the ground, and a beam can cover tens to hundreds of kilometers in diameter. the ground area.
  • the network device can also be a base station installed on land, water, etc.
  • the network device can be a next generation base station (next generation NodeB, gNB) or a next generation evolved base station (next generation-evolved NodeB, ng-eNB) .
  • gNB provides UE with new air interface (new radio, NR) user plane function and control plane function
  • ng-eNB provides UE with evolved universal terrestrial radio access (E-UTRA) user plane Functions and control plane functions.
  • E-UTRA evolved universal terrestrial radio access
  • the network equipment can also be a base station (base transceiver station, BTS) in the GSM system or a CDMA system, or a base station (nodeB, NB) in a WCDMA system, or an evolved base station (evolutional node B, NB) in an LTE system.
  • BTS base transceiver station
  • nodeB, NB base station
  • evolutional node B, NB evolved base station
  • the network device can also be a relay station, an access point, a vehicle-mounted device, a wearable device, and a network side device in a network after 5G or a network device in a future evolved PLMN network, and a road site unit (RSU). )wait.
  • RSU road site unit
  • RRC state The terminal device and the network device communicate with each other through the wireless channel and exchange information with each other. Therefore, a control mechanism is needed between the terminal device and the network device to exchange information and reach an agreement.
  • This control mechanism is RRC.
  • RRC states include RRC idle state and RRC connected state.
  • RRC inactive state RRC inactive
  • the terminal device is in a non-connected state with the network device, but the context of the terminal device is still partially reserved. At the same time, in the RRC inactive state, the terminal device can quickly switch to the RRC connection state through paging messages, etc. .
  • Random access refers to the process before the terminal device transmits the random access preamble and establishes a basic signaling connection with the network device. It refers to the process in which the terminal device establishes a wireless link with the network device and obtains or restores uplink synchronization. Random access is a key step in the mobile communication system, making it possible for terminal equipment and network equipment to establish communication connections.
  • the terminal device performs information interaction with the network device through random access, and can also realize uplink synchronization through random access. In the actual application process, the terminal device may initiate random access in various possible scenarios.
  • the various possible scenarios may include at least one of the following scenarios: (1) The state of the terminal device is changed from the radio resource control ( After the radio resource control (RRC) idle state is switched to the RRC connection state, the terminal device initiates random access when establishing a wireless link with the network device. (2) After the wireless link between the terminal device and the network device fails, the terminal device initiates random access when re-establishing the RRC connection with the network device. (3) Initiate random access when the terminal device needs to establish uplink synchronization with the new cell. (4) When the terminal device is in the RRC connection state and the uplink is not synchronized, if there is uplink or downlink data arriving, random access is initiated.
  • RRC radio resource control
  • Random access is initiated when the terminal device is in the RRC connection state, but no dedicated resources for sending scheduling requests have been configured for the terminal device on the physical uplink control channel (PUCCH).
  • PUCCH physical uplink control channel
  • (6) Initiate random access when the scheduling request fails.
  • (7) Initiate random access when RRC requests during synchronous reconfiguration.
  • Random access is initiated when the state of the terminal equipment is switched from the RRC inactive state to the RRC connected state.
  • MIB master information block
  • SIB system information block
  • RA-SDT Small data transmission based on random access.
  • the data transmission method based on random access is a way for terminal equipment to complete uplink data transmission through information interaction in the process of establishing a connection with network equipment through random access.
  • CG-SDT small data transmission based on pre-configured resources
  • data transmission based on pre-configured resources and data transmission based on random access are all data transmission methods of terminal equipment in the inactive state, among which the data transmission based on pre-configured resources
  • the data transmission method is to complete the transmission of uplink data according to the pre-configured resources allocated by the network device to the terminal device in advance
  • RSRP reference signal receiving power, reference signal receiving power.
  • RRC Radio Resource Control, radio resource control.
  • Suspend state the context of a terminal device in the suspend state is stored in the RAN and UE, so that the UE can quickly switch to the connected state.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • a network device 101 and a terminal device 102 are included, and wireless communication and data transmission can be performed between the network device 101 and the terminal device 102 .
  • the network including the network device 101 and the terminal device 102 may also be referred to as a non-terrestrial communication network (Non-Terrestrial Network, NTN), where the NTN refers to the communication between the terminal device and the satellite (also referred to as a network device). network.
  • NTN non-terrestrial communication network
  • the NTN refers to the communication between the terminal device and the satellite (also referred to as a network device).
  • NR New Radio
  • 5G Fifth Generation Mobile Communication
  • WIFI Wireless Fidelity
  • LTE Long Term Evolution
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.
  • the RRC state is divided into three types, which are RRC idle state, RRC inactive state and RRC connected state.
  • the RRC inactive state is a new state introduced by the 5G system from the perspective of energy saving.
  • the radio bearer and all radio resources will be released, but the UE side and the base station side retain the UE access context.
  • the network usually keeps the UE with infrequent data transmission in the RRC inactive state.
  • the UE in the RRC inactive state does not support data transmission.
  • the UE needs to restore the connection, and then release to the inactive state after the data transmission is completed.
  • SDT process in the RRC inactive state includes SDT based on random access and SDT based on pre-configured resources.
  • Rel-16 introduces a two-step random access process. Therefore, small data transmission based on random access can further It is divided into small data transmission based on four-step random access and small data transmission based on two-step random access.
  • the SDT process can be triggered when the following conditions are met:
  • the data to be transmitted comes from a radio bearer that can trigger SDT, such as signaling radio bearer (signalling radio bearer, SRB), data radio bearer (data radio bearer, DRB), etc.;
  • a radio bearer that can trigger SDT, such as signaling radio bearer (signalling radio bearer, SRB), data radio bearer (data radio bearer, DRB), etc.;
  • the amount of data to be transmitted is less than the pre-configured data amount threshold of the network device
  • the SDT process is aimed at data transmission of UEs with small data volume and low transmission frequency, there is a certain limit on the amount of data to be transmitted, and the SDT process can only be initiated when the amount of data to be transmitted is less than the pre-configured data volume threshold.
  • the SDT resource is used for the terminal device to execute the SDT process, and the SDT resource may include RA-SDT resource and/or CG-SDT resource.
  • the RA-SDT resource can be used for the SDT process based on random access, and the CG-SDT resource can be used for the SDT process based on pre-configured resources.
  • the RA-SDT resources are public resources at the cell level, and there is competition for uplink resources, while the CG-SDT resources are resources configured for UEs through dedicated signaling, and there is no competition for uplink resources in the CG-SDT resources.
  • the SDT process is triggered.
  • condition (4) when the UE is only configured with RA-SDT resources, the UE can try the SDT process based on random access; when the UE is only configured with CG-SDT resources, the UE can try the SDT process based on pre-configured resources; When the UE is configured with RA-SDT resources and CG-SDT resources at the same time, the UE first determines whether the CG-SDT resources are valid.
  • the judgment conditions for the UE to judge whether the CG-SDT resources are valid include:
  • the way of judging whether there is a valid TA may include:
  • the SDT-TA timer (SDT-TA Timer, SDT-TAT) is running.
  • SDT-TAT is a timer specially introduced in the CG-SDT process to maintain the validity of TA. It starts when the terminal device receives the CG-SDT resource. When the terminal device has an uplink data transmission requirement, it can judge whether the SDT-TAT is in the running state. If the SDT-TAT is in the running state, it means that the TA is valid.
  • the change amount of RSRP is less than or equal to the pre-configured threshold.
  • the selected carrier may include normal uplink (normal uplink, NUL) or supplementary uplink (supplementary uplink, SUL).
  • the CG-SDT resources When the configured CG-SDT resources meet the above conditions, the CG-SDT resources are valid, and at this time, the UE can perform the SDT process based on the pre-configured resources. When the configured CG-SDT resources do not meet the above conditions, the CG-SDT resources are invalid, and at this time, the UE needs to further determine whether the RA-SDT resources are valid.
  • the manner of judging whether the RA-SDT resource is valid may judge whether the RA-SDT resource exists on the selected carrier. If it exists, the RA-SDT resource is valid; if it does not exist, the RA-SDT resource is invalid.
  • the UE can perform the SDT process based on random access; if the RA-SDT resource is invalid, the UE initiates the RRC recovery process, enters the RRC connected state, and then performs the SDT process in the connected state.
  • the process of triggering the SDT is introduced, and the process of the terminal device reporting information to optimize network parameter configuration will be described below in conjunction with FIG. 2 .
  • the process of reporting information by the terminal device can be realized based on a self-organizing network (Self-Organizing Network, SON).
  • Figure 2 is a signaling flow chart based on SON reporting information, as shown in Figure 2, including:
  • the network device sends a terminal information request message (UE Information Request) to the terminal device.
  • UE Information Request UE Information Request
  • the network device sends a terminal information request message to the terminal device in the RRC connection state, and the terminal information request message includes the type of information that the network device needs to report.
  • the type of information that needs to be reported in the terminal information request message may include ra-ReportReq, rlf-ReportReq, etc.
  • the corresponding parameter field is set to true, it means that the network device needs the terminal device to report the corresponding information.
  • the parameter field corresponding to ra-ReportReq is set to true, it means that the network device needs the terminal device to report information related to the random access process; when the parameter field corresponding to rlf-ReportReq is set to true, it means that the network device needs the terminal device to report the wireless Link-related information.
  • the terminal device sends a terminal information response message (UE Information Response) to the network device.
  • UE Information Response terminal information response message
  • the terminal device may feed back a corresponding type of report to the network device through a terminal information response message according to the instruction of the network device.
  • the terminal device triggers and records reports of the above information types.
  • the terminal device stores information related to the random access process in the VarRA-Report list maintained by the terminal device after each successful completion of the random access process.
  • the terminal device When receiving the report request from the network device, report the recorded information related to the random access process to the network device.
  • the parameters of the data transmission process can be reported according to the scheme illustrated in Figure 2, so as to realize the optimization of the data transmission process.
  • the SDT process in some scenarios, there are still corresponding problems to be optimized in the successfully completed SDT process. Since SDT is a new feature introduced in R17, there is currently no plan to record and report the problems existing in the SDT process . Based on this, the embodiment of the present application provides a solution to realize recording and reporting in the successfully completed SDT process.
  • Fig. 3 is a schematic flow chart of a communication method provided in the embodiment of the present application. As shown in Fig. 3, the method may include:
  • the terminal device records the SDT process parameters.
  • the SDT process is completed when the terminal device is in the RRC inactive state, and the SDT process may be a random access-based SDT process, or a pre-configured resource-based SDT process.
  • the SDT process may be successfully completed, there are SDT exceptions in the SDT process, and these SDT exceptions are potential problems in the SDT process.
  • the terminal device records the SDT process parameters.
  • the terminal device reports the SDT process parameters to the network device.
  • the terminal device After the terminal device records the SDT process parameters, it can report the SDT process parameters to the network device, and the reporting process can be completed based on the SON framework.
  • the network device receives the SDT process parameter.
  • the network device can analyze the potential problems that need to be optimized in the successfully completed SDT process according to the SDT process parameters, so as to perform corresponding optimization processing for these potential problems.
  • the terminal device when the successfully completed SDT process includes an SDT abnormality, the terminal device records the SDT process parameters, and then reports the SDT process parameters to the network device.
  • the SDT process includes an SDT exception, it indicates that although the SDT process is successfully completed, there are problems to be optimized in the SDT process. Therefore, the terminal device records the SDT process parameters and reports them to the network device, so that the network device can discover SDT according to the SDT process parameters. problems in the process, thereby helping network devices to optimize SDT resources and parameter configurations.
  • the terminal device may report the SDT process parameters based on the SON framework illustrated in FIG. 2 , which will be introduced in conjunction with FIG. 4 below.
  • Fig. 4 is a schematic flow diagram of a communication method provided in the embodiment of the present application, as shown in Fig. 4 , including:
  • the network device sends a terminal information request message to the terminal device.
  • the network device may send a terminal information request message to the terminal device, and the terminal information request message includes information types that the network device needs to report from the terminal device.
  • the terminal device executes the SDT process.
  • the terminal device is in the RRC inactive state when executing the SDT process.
  • the SDT process initiated by the terminal device may be a pre-configured resource-based SDT process, or a random access-based SDT process.
  • the terminal device When the terminal device initiates the SDT process, the terminal device will start the SDT failure detection timer synchronously.
  • the duration of the SDT failure detection timer can be configured by the network device, and the terminal device executes the SDT process during the operation of the SDT failure detection timer.
  • the terminal device When the terminal device receives the first RRC message sent from the network device during the operation of the SDT failure detection timer, it means that the SDT process is successfully completed. At this time, the terminal device can stop running the SDT failure detection timer.
  • the start time of the SDT failure detection timer is the time when the terminal device sends the SDT process
  • the end time of the SDT failure detection timer is the time when the terminal device receives the first RRC message, wherein the first RRC message can be RRC recovery message, RRC Any one of the release message and the RRC state suspension configuration message. If the terminal device has not received the first RRC message after the SDT failure detection timer elapses, it is considered that the SDT process has not been successfully completed.
  • the terminal device records the SDT process parameters.
  • the terminal device has successfully completed the SDT process, that is, it has successfully received the first RRC message during the operation of the SDT failure detection timer.
  • the terminal device will record the SDT process parameters to report to the network device.
  • the SDT abnormality includes at least one of the following:
  • Abnormal event 1 the time period between the time when the SDT process is completed and the timeout time of the SDT failure detection timer is less than or equal to the first time period.
  • the first duration is the duration configured by the network device
  • the timeout time of the SDT failure detection timer is the time when the running duration of the SDT failure detection timer reaches the configured duration
  • the time when the SDT process is completed is when the terminal device receives the first RRC message time.
  • the terminal equipment Since the terminal equipment receives the first RRC message during the operation of the SDT failure detection timer, the SDT process is successfully completed. , indicating that the SDT process is successfully completed when the SDT failure detection timer is about to expire.
  • the abnormal event one may indicate that the duration configuration of the SDT failure detection timer is unreasonable, and may indicate that there are some reasons that cause the time for the SDT to complete successfully to be extended, and so on. Therefore, when an abnormal event 1 occurs in a successfully completed SDT process, the terminal device will record the SDT process parameters.
  • Abnormal event 2 A random access problem occurs on the terminal device.
  • the SDT process initiated by the terminal device may be a pre-configured resource-based SDT process, or a random access-based SDT process. During the SDT process, if the terminal initiates random access and a random access problem occurs, it is considered that there is an SDT abnormality in the SDT process.
  • the random access problem may be, for example, that the number of times the terminal device attempts to initiate random access reaches a preconfigured maximum number of times.
  • the pre-configured maximum number of times can be configured by the network device.
  • the terminal device initiates the random access process, if the random access fails, the terminal device will try to initiate the random access again. For example, if the pre-configured maximum number of times is 8, and the terminal device fails to try the random access process for many times during the SDT process, when the number of random access attempts of the terminal device reaches 8 times, it is determined that a random access process has occurred on the terminal device. In case of an entry problem, abnormal event 2 occurs in the successfully completed SDT process at this time, and the terminal device will record the SDT process parameters.
  • Abnormal event 3 The terminal device triggers a random access process during the SDT process based on pre-configured resources.
  • the terminal device when the terminal device is configured with CG-SDT resources and RA-SDT resources at the same time, the terminal device first determines whether the CG-SDT resource is valid, and if it is valid, the terminal device initiates an SDT process based on pre-configured resources, If it is invalid, the terminal device judges whether the RA-SDT resource is valid, and initiates a random access-based SDT process if it is valid.
  • the terminal device When the terminal device initiates the SDT process based on the pre-configured resources, it indicates that the CG-SDT resources are initially determined to be valid, and the SDT process based on the pre-configured resources will be initiated only on the premise that the CG-SDT resources are valid.
  • the terminal device triggers the random access process. It is possible that during the execution of the SDT process, when the CG-SDT resource is determined to be valid again, the CG-SDT resource is determined to be invalid, and the random access process is triggered at this time. For example, when there is no suitable SSB, the terminal device triggers a random access process in the SDT process based on pre-configured resources. At this time, abnormal event three occurs in the successfully completed SDT process, and the terminal device will record the SDT process parameters.
  • Abnormal event 4 The terminal device triggers the SDT process based on random access when pre-configured resources are configured.
  • the terminal device When the terminal device is configured with CG-SDT resources and RA-SDT resources at the same time, the terminal device first judges whether the CG-SDT resource is valid. If it is valid, the terminal device initiates the SDT process based on the pre-configured resources. If it is invalid, the terminal device judges the RA - Whether the SDT resource is valid, and initiate a random access-based SDT process if valid.
  • the terminal device when the terminal device is configured with pre-configured resources, if a random access-based SDT process is triggered, it means that the pre-configured resources are invalid, and the pre-configured resources allocated to the terminal device have not been effectively used. At this time, when abnormal event 4 occurs in the successfully completed SDT process, the terminal device will record the SDT process parameters.
  • the SDT exceptions included in the successfully completed SDT process that is, exception event 1 to exception event 4, are introduced.
  • the terminal device records the SDT process parameters.
  • the SDT process parameters include at least one of the first parameter, the second parameter and the third parameter.
  • the first parameter is a configuration parameter triggering the SDT process, and is used to assist the network device in judging whether the configuration parameter triggering the SDT process is reasonable.
  • the first parameter may include at least one of the following:
  • the amount of data to be transmitted when the terminal device triggers the SDT process will affect the duration of the SDT process.
  • the SDT process takes a relatively longer time.
  • the SDT process It takes relatively less time.
  • First indication information where the first indication information is used to indicate whether new SDT data arrives during the SDT process.
  • the first indication information indicates whether new SDT data arrives during the SDT process.
  • new SDT data arrives during the SDT process the amount of data to be transmitted increases correspondingly, and the time-consuming of the SDT process changes accordingly.
  • the SDT failure detection timer is configured by the network device for each cell.
  • Each cell may include multiple terminal devices. For different terminal devices, the arrival of data to be transmitted is different.
  • the network device can judge according to the first parameter whether the configuration of the amount of data triggering the SDT process is reasonable, whether the configuration of the duration of the SDT failure detection timer is reasonable, and so on. For example, when the time length between the time when the SDT process is completed and the timeout time of the SDT failure detection timer is less than or equal to the first time length, the network device receives the first parameter, and the first parameter includes the waiting time when the terminal device triggers the SDT process. The amount of data transferred. According to the amount of data to be transmitted when the terminal device triggers the SDT process, it is known that the configured data amount to be transmitted is too large, and at this time the network device may reconfigure the data amount of the SDT. For example, the first parameter includes the duration of the SDT failure detection timer. If the network device judges that the duration of the SDT failure detection timer is too short, the network device may reconfigure the duration of the SDT failure detection timer, and so on.
  • the second parameter is a wireless link parameter in the SDT process, and is used to assist the network device in judging whether the terminal device has a wireless link problem during the execution of the SDT process.
  • the second parameter may include at least one of the following:
  • the downlink reference signal measurement result may include a synchronization signal block (Synchronization Signal Block, SSB) and/or a positioning reference signal (Positioning Reference Signal, PRS).
  • SSB Synchronization Signal Block
  • PRS Positioning Reference Signal
  • the second indication information is used to indicate whether the terminal device executes the SDT process multiple times.
  • executing the SDT process multiple times means executing the SDT process twice or more.
  • Executing the SDT process multiple times indicates that the terminal device is executing the SDT process. Due to some reasons, the SDT process is not successful, so the SDT process needs to be executed again. At this time, the terminal device records the corresponding parameters to assist the network device in judging the potential of the SDT process. The problem.
  • the second indication information includes resource configuration information of the SDT process based on pre-configured resources, or, the second indication information includes resource configuration information of the SDT process based on random access.
  • the resource configuration information may include time domain resources, frequency domain resources, etc. corresponding to the execution of the SDT process.
  • the second indication information may include the resource configuration information of the SDT process based on pre-configured resources, and the resource configuration information of the SDT process based on pre-configured resources It may include time domain resources, frequency domain resources, etc. used by the terminal device to perform the SDT process based on pre-configured resources; It includes resource configuration information of the SDT process based on random access, and the resource configuration information of the SDT process based on random access may include time domain resources, frequency domain resources, etc. used by the terminal device to perform the SDT process based on random access.
  • the network device may determine that the terminal device has executed the SDT process multiple times.
  • the third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources.
  • the terminal device When the terminal device is configured with CG-SDT resources and RA-SDT resources at the same time, the terminal device first determines whether the CG-SDT resource is valid, and if valid, the terminal device initiates an SDT process based on pre-configured resources. Therefore, when the pre-configured resources are valid, if the terminal device triggers the random access process, it means that the initially valid CG-SDT resources are invalid. For example, when there is no suitable SSB, the terminal device triggers a random access process in the SDT process based on pre-configured resources.
  • the fourth indication information is used to indicate whether a random access problem has occurred in the terminal device.
  • the random access problem may be, for example, that the number of times the terminal device attempts to initiate random access reaches a preconfigured maximum number of times.
  • the pre-configured maximum number of times can be configured by the network device.
  • the terminal device initiates the random access process, if the random access fails, the terminal device will try to initiate the random access again. For example, if the pre-configured maximum number of times is 8, and the terminal device fails to try the random access process for many times during the SDT process, when the number of random access attempts of the terminal device reaches 8 times, it is determined that a random access process has occurred on the terminal device. into the problem.
  • the terminal device may record fourth indication information, which is used to indicate to the network device whether a random access problem occurs on the terminal device.
  • the second parameter includes at least one of the downlink reference signal measurement result, the second indication information, the third indication information, and the fourth indication information.
  • the network device can judge according to the second parameter whether the terminal device has a wireless link during the execution of the SDT.
  • road quality problems including uplink and/or downlink. If the network device determines that the terminal device has a wireless link quality problem during the execution of SDT according to the second parameter, the network device can optimize the RA-SDT resource configuration, CG-SDT resource configuration, RSRP threshold configuration, etc., to reduce the possible wireless link quality. Link quality problem.
  • the third parameter is a resource configuration parameter of the SDT process, which is used to assist the network device to determine whether the SDT resource configured for the terminal device is effectively used.
  • the third parameter includes:
  • the third parameter includes fifth indication information.
  • the fifth indication information is used to indicate whether the terminal device triggers a random access-based SDT process when pre-configured resources are configured.
  • the terminal device When the terminal device is configured with pre-configured resources, if the pre-configured resources are valid, the terminal device will initiate an SDT process based on the pre-configured resources.
  • the fifth indication information indicates that the terminal device has not triggered the SDT process based on random access when the pre-configured resources are configured, it means that the pre-configured resources configured for the terminal device have been effectively used; if the fifth indication information indicates that the terminal device is in If the random access-based SDT process is triggered when pre-configured resources are configured, it means that the pre-configured resources configured by the terminal device have not been effectively used.
  • the network device can judge whether the pre-configured resources are effectively used according to the above-mentioned fifth indication information, and if not, the network device can optimize the configuration of the pre-configured resources, for example, it can be set to use the pre-configured resources for the transmission of other data For example, combining other reported SDT process parameters to determine the reason why the pre-configured resources are invalid, so that the subsequent terminal device can execute the SDT process based on the pre-configured resources when performing the SDT process, etc., so as to reduce the waste of resources.
  • the terminal device sends a terminal information response message to the network device.
  • the terminal device can report the SDT process parameters to the network device.
  • the terminal device may report the SDT process parameters to the network device through a terminal information response message.
  • the terminal device sends a terminal information response message to the network device, and the terminal information response message includes SDT process parameters.
  • the network device After receiving the SDT process parameters reported by the terminal device, the network device can optimize the SDT resource or parameter configuration according to the SDT process parameters. Specific resource or parameter configuration optimization can refer to the above-mentioned embodiments, and will not be repeated here.
  • the terminal device when the successfully completed SDT process includes an SDT abnormality, the terminal device records the SDT process parameters, and then reports the SDT process parameters to the network device.
  • the SDT process includes an SDT exception, it indicates that although the SDT process is successfully completed, there are problems to be optimized in the SDT process. Therefore, the terminal device records the SDT process parameters and reports them to the network device, so that the network device can discover SDT according to the SDT process parameters. problems in the process, thereby helping network devices to optimize SDT resources and parameter configurations.
  • FIG. 5 is a schematic structural diagram of a communication device provided in an embodiment of the present application. As shown in FIG. 5, the communication device 50 includes:
  • a recording module 51 configured to record the SDT process parameters when including an SDT exception in the successfully completed SDT process
  • a reporting module 52 configured to report the SDT process parameters to network equipment.
  • the SDT abnormality includes at least one of the following:
  • the duration between the moment when the SDT process is completed and the overtime of the SDT failure detection timer is less than or equal to the first duration
  • a random access problem occurs on the terminal device
  • the terminal device triggers a random access process during the SDT process based on pre-configured resources
  • the terminal device triggers a random access-based SDT process when pre-configured resources are configured.
  • the first duration is a duration configured by the network device.
  • the SDT process parameters include at least one of the following:
  • a first parameter where the first parameter is a configuration parameter that triggers the SDT process
  • a second parameter where the second parameter is a radio link parameter of the SDT process
  • a third parameter where the third parameter is a resource configuration parameter of the SDT process.
  • the first parameter includes at least one of the following:
  • First indication information where the first indication information is used to indicate whether new SDT data arrives during the SDT process
  • the duration of the SDT failure detection timer is the duration of the SDT failure detection timer.
  • the second parameter includes at least one of the following:
  • the second indication information is used to indicate whether the terminal device executes the SDT process multiple times
  • third indication information where the third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources
  • Fourth indication information where the fourth indication information is used to indicate whether a random access problem occurs on the terminal device.
  • the downlink reference signal is SSB and/or PRS.
  • the second indication information includes resource configuration information of the SDT process based on pre-configured resources; or, the second indication information includes resource configuration information of the SDT process based on random access .
  • the third parameter includes fifth indication information, where:
  • the fifth indication information is used to indicate whether the terminal device triggers an SDT process based on random access when pre-configured resources are configured.
  • a receiving module is also included, and the receiving module is used for:
  • a first RRC message is received from the network device while an SDT failure detection timer is running.
  • the first RRC message includes any of the following:
  • the start time of the SDT failure detection timer is the time when the terminal device initiates the SDT process
  • the end time of the SDT failure detection timer is the time when the terminal device receives the first RRC message.
  • the reporting module 52 is specifically configured to:
  • the terminal information response message includes the SDT process parameters
  • the terminal information response message is a response message to the terminal information request message.
  • the communication device provided in the embodiment of the present application can execute the technical solutions shown in the above method embodiments, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application. As shown in FIG. 6, the communication device 60 includes:
  • the receiving module 61 is configured to receive an SDT process parameter reported by the terminal device, where the SDT process parameter indicates that the SDT process successfully completed by the terminal device includes an SDT exception.
  • the SDT process parameters include at least one of the following:
  • a first parameter where the first parameter is a configuration parameter that triggers the SDT process
  • a second parameter where the second parameter is a radio link parameter of the SDT process
  • a third parameter where the third parameter is a resource configuration parameter of the SDT process.
  • the first parameter includes at least one of the following:
  • First indication information where the first indication information is used to indicate whether new SDT data arrives during the SDT process
  • the duration of the SDT failure detection timer is the duration of the SDT failure detection timer.
  • the second parameter includes at least one of the following:
  • the second indication information is used to indicate whether the terminal device executes the SDT process multiple times
  • third indication information where the third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources
  • Fourth indication information where the fourth indication information is used to indicate whether a random access problem occurs on the terminal device.
  • the downlink reference signal is SSB and/or PRS.
  • the second indication information includes resource configuration information of the SDT process based on pre-configured resources; or, the second indication information includes resource configuration information of the SDT process based on random access .
  • the third parameter includes fifth indication information, where:
  • the fifth indication information is used to indicate whether the terminal device triggers an SDT process based on random access when pre-configured resources are configured.
  • the receiving module 61 is specifically configured to:
  • the terminal information response message includes the SDT process parameters, and the terminal information response message is a response message to the terminal information request message.
  • the communication device provided in the embodiment of the present application can execute the technical solutions shown in the above method embodiments, and its implementation principles and beneficial effects are similar, and will not be repeated here.
  • FIG. 7 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • a terminal device 70 may include: a transceiver 71 , a memory 72 , and a processor 73 .
  • the transceiver 71 may include: a transmitter and/or a receiver.
  • the transmitter may also be called a transmitter, a transmitter, a sending port, or a sending interface, and similar descriptions
  • the receiver may also be called a receiver, a receiver, a receiving port, or a receiving interface, or similar descriptions.
  • the transceiver 71 , the memory 72 , and the processor 73 are connected to each other through a bus 74 .
  • the memory 72 is used to store program instructions
  • the processor 73 is configured to execute the program instructions stored in the memory, so as to enable the terminal device 70 to execute any communication method shown above.
  • the receiver of the transceiver 71 can be used to perform the receiving function of the terminal device in the above communication method.
  • FIG. 8 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • a network device 80 may include: a transceiver 81 , a memory 82 , and a processor 83 .
  • the transceiver 81 may include: a transmitter and/or a receiver.
  • the transmitter may also be called a transmitter, a transmitter, a sending port, or a sending interface, and similar descriptions
  • the receiver may also be called a receiver, a receiver, a receiving port, or a receiving interface, or similar descriptions.
  • the transceiver 81 , the memory 82 , and the processor 83 are connected to each other through a bus 84 .
  • Memory 82 is used to store program instructions
  • the processor 83 is configured to execute the program instructions stored in the memory, so as to enable the network device 80 to execute any communication method shown above.
  • the receiver of the transceiver 81 can be used to perform the receiving function of the network device in the above communication method.
  • An embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, the foregoing communication method is implemented.
  • An embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, the foregoing communication method is implemented.
  • the embodiment of the present application may further provide a computer program product, the computer program product may be executed by a processor, and when the computer program product is executed, any communication method performed by the terminal device or network device shown above may be implemented.
  • the communication device, computer-readable storage medium, and computer program product of the embodiments of the present application can execute the communication method performed by the above-mentioned terminal device and network device.
  • the specific implementation process and beneficial effects refer to the above, and will not be repeated here.
  • the disclosed system, device and method can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the aforementioned computer program can be stored in a computer-readable storage medium.
  • the computer program When the computer program is executed by the processor, it implements the steps of the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

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

Abstract

Des modes de réalisation de la présente demande concernent un procédé et un appareil de communication. Le procédé est appliqué à un dispositif terminal, et comprend les étapes suivantes : lorsque le processus de transmission de données de petite taille (SDT) achevé avec succès comprend une exception SDT, enregistrer des paramètres de processus SDT ; et rapporter les paramètres de processus SDT à un dispositif de réseau. Les paramètres de processus SDT sont enregistrés et rapportés lorsque le processus SDT est achevé avec succès.
PCT/CN2021/138308 2021-12-15 2021-12-15 Procédé et appareil de communication WO2023108474A1 (fr)

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