WO2021146863A1 - Procédé et appareil de communication, et dispositif - Google Patents

Procédé et appareil de communication, et dispositif Download PDF

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Publication number
WO2021146863A1
WO2021146863A1 PCT/CN2020/073308 CN2020073308W WO2021146863A1 WO 2021146863 A1 WO2021146863 A1 WO 2021146863A1 CN 2020073308 W CN2020073308 W CN 2020073308W WO 2021146863 A1 WO2021146863 A1 WO 2021146863A1
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WIPO (PCT)
Prior art keywords
information
rlc
data
configuration information
status report
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PCT/CN2020/073308
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English (en)
Chinese (zh)
Inventor
付喆
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Oppo广东移动通信有限公司
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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 PCT/CN2020/073308 priority Critical patent/WO2021146863A1/fr
Priority to CN202080077071.5A priority patent/CN114642060B/zh
Publication of WO2021146863A1 publication Critical patent/WO2021146863A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method, device and equipment.
  • Non-Terrestrial Network refers to a communication network between a terminal device and a satellite (also called a network device).
  • the failed data is usually retransmitted.
  • the signal propagation delay between the terminal device and the network device is relatively large, the data retransmission delay between the terminal device and the network device is relatively large, and the communication performance between the terminal device and the network device is poor.
  • the embodiments of the present application provide a communication method, device, and equipment, which reduce the data retransmission delay between terminal equipment and network equipment.
  • an embodiment of the present application provides a communication method, including:
  • the first device obtains configuration information, where the configuration information is used to instruct to repeatedly send the first information
  • the first device repeatedly sends the first information to the second device according to the configuration information.
  • an embodiment of the present application provides a communication method, including:
  • the second device receives multiple pieces of first information repeatedly sent by the first device, and the multiple pieces of first information have the same identities
  • the second device processes the plurality of first information.
  • an embodiment of the present application provides a communication device, which is applied to a first device, and the device includes a processing module and a sending module, where:
  • the processing module is configured to obtain configuration information, where the configuration information is used to instruct to repeatedly send the first information
  • the sending module is configured to repeatedly send the first information to the second device according to the configuration information.
  • an embodiment of the present application provides a communication device, which is applied to a second device, and the device includes a receiving module and a processing module, where:
  • the receiving module is configured to receive multiple pieces of first information repeatedly sent by the first device, and the multiple pieces of first information have the same identifier;
  • the processing module is used to process the multiple pieces of first information.
  • an embodiment of the present application provides a terminal device, including: a transceiver, a processor, and a memory;
  • the memory stores computer execution 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 or the second aspect.
  • an embodiment of the present application provides a network device, including: a transceiver, a processor, and a memory;
  • the memory stores computer execution instructions
  • the processor executes a computer-executable instruction stored in the memory, so that the processor executes the communication method according to any one of the first aspect or the second aspect.
  • an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the foregoing The communication method according to any one of the first aspect.
  • an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer-executable instruction, and when the computer-executable instruction is executed by a processor, it is used to implement the foregoing The communication method according to any one of the second aspect.
  • the first device can obtain configuration information, and the configuration information is used to indicate repeated transmission of the first information. Accordingly, when the first device sends the first information, it can be based on The configuration information repeatedly sends the first information, so that the first device does not need to retransmit to the second device after receiving the failure response message (indicating that the data was not successfully received) from the second device. This reduces the time delay of retransmission of data between the terminal device and the network device, and improves the communication performance between the terminal device and the network device.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of this application.
  • FIG. 2 is a schematic diagram of the architecture of another communication system provided by an embodiment of this application.
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 4 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 5 is a schematic diagram of a communication process provided by an embodiment of this application.
  • FIG. 6 is a schematic flowchart of yet another communication method provided by an embodiment of this application.
  • FIG. 7 is a schematic diagram of another communication process provided by an embodiment of this application.
  • FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 9 is a schematic diagram of another communication process provided by an embodiment of this application.
  • FIG. 10 is a schematic flowchart of yet another communication method provided by an embodiment of this application.
  • FIG. 11 is a schematic diagram of still another communication process provided by an embodiment of this application.
  • FIG. 12 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 13 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 14 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • 15 is a schematic structural diagram of still another communication device provided by an embodiment of this application.
  • FIG. 16 is a schematic structural diagram of a terminal device provided by an embodiment of this application.
  • FIG. 17 is a schematic structural diagram of a network device provided by an embodiment of the application.
  • Terminal equipment usually has a wireless transceiver function, terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water (such as ships, etc.); can also be deployed in the air (such as airplanes, balloons, etc.) And satellite class).
  • the terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial Wireless terminals in industrial control, in-vehicle terminal equipment, wireless terminals in self-driving (self-driving), wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, Wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, wireless terminal equipment in smart home, wearable terminal equipment, etc.
  • VR virtual reality
  • AR augmented reality
  • the terminal equipment involved in the embodiments of the present application may also be referred to as a 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.
  • the terminal device can also be fixed or mobile.
  • Network equipment usually has a wireless transceiver function, the network equipment may have mobile characteristics, for example, the network equipment may be a mobile device.
  • the network equipment can be a satellite or a balloon station.
  • the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, or a high elliptical orbit (High Elliptical Orbit, HEO). ) Satellite etc.
  • LEO low earth orbit
  • MEO medium earth orbit
  • GEO geostationary earth orbit
  • HEO high elliptical orbit
  • the orbital height range of LEO satellites is usually 500km to 1500km, and the orbital period (the period of rotation around the earth) is about 1.5 hours to 2 hours.
  • the signal propagation delay of single-hop communication between users is about 20ms.
  • the single-hop communication delay between users refers to the transmission delay between the terminal device and the network device, or the delay between the network device and the transmission device.
  • 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 of the ground.
  • LEO satellites move relative to the ground. As the satellite moves, the ground area covered by it is also Changing.
  • the signal propagation distance of the LEO satellite is short, the link loss is small, and the requirement for the transmission power of the terminal equipment is not high.
  • the orbital height of GEO satellites is usually 35786km, and the orbital period is 24 hours.
  • the signal propagation delay of 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 one beam can cover dozens to hundreds of kilometers in diameter.
  • Ground area can also be a base station set up in land, water, etc., for example, the network equipment can be a next generation NodeB (gNB) or a next generation-evolved NodeB (ng-eNB) .
  • gNB provides UE with new radio (NR) user plane functions and control plane functions
  • ng-eNB provides UE with evolved universal terrestrial radio access (E-UTRA) user plane Functions and control plane functions.
  • NR new radio
  • E-UTRA evolved universal terrestrial radio access
  • the network equipment can also be a base transceiver station (BTS) in a GSM system or a CDMA system, a base station (nodeB, NB) in a WCDMA system, or an evolutional node B (evolutional node B) in an LTE system. eNB or eNodeB).
  • BTS base transceiver station
  • nodeB, NB base station
  • evolutional node B evolutional node B
  • the network equipment may also be relay stations, access points, in-vehicle equipment, wearable equipment, and network side equipment in the network after 5G or network equipment in the future evolved PLMN network, road site unit (RSU) )Wait.
  • RSU road site unit
  • Radio link control (RLC) entity Each logical channel of a terminal device corresponds to an RLC entity.
  • the RLC entity can be configured in different RLC modes.
  • the RLC mode can be any of the following three modes: transparent mode (TM), unacknowledged mode (UM), and acknowledged mode (acknowledged mode, AM). Below, the three modes are described:
  • Transparent transmission mode The RLC entity configured in the transparent transmission mode can also be referred to as a TM RLC entity.
  • the TM RLC entity In the transparent transmission mode, the TM RLC entity only provides the function of transparent transmission of data.
  • Unacknowledged mode RLC entities configured in unacknowledged mode can also be called UM RLC entities.
  • UM RLC entities can provide everything except retransmission, re-segmentation, duplicate packet detection, and protocol error detection. RLC function, therefore, the reliability of the transmission service provided by the UM RLC entity is poor.
  • the RLC entity configured in the acknowledgement mode can also be called an AM RLC entity.
  • the AM RLC entity can provide all RLC functions. Since the AM RLC entity can provide functions such as error detection and retransmission, the transmission provided by the AM RLC entity The reliability of the service is strong.
  • the RLC service data unit (SDU) segmentation and reorganization function can be supported. Since the size of the resource used for data transmission is usually determined by the medium access control (MAC) scheduler, the size of the resource determined by the MAC scheduler may not be the same as the MAC protocol data unit (PDU). Therefore, the sender needs to segment the RLC SDU to match the resource size indicated by the MAC layer. Correspondingly, after the receiving end receives the segmented RLC SDU, it reorganizes the segmented RLC SDU to recover the original RLC SDU and submit it to the upper layer.
  • the upper layer can be a packet data convergence protocol (packet data convergence protocol). , PDCP) layer.
  • the network device can configure an RLC reassembly timer (t-Reassembly) for the terminal device, and control the time for the terminal device to reassemble the RLC SDU through the RLC reassembly timer. For example, after receiving a PDU segment from the MAC layer, if at least one byte (byte) before the PDU segment has not been received, if the RLC reassembly timer is not currently running, start the RLC reassembly timing Device. If the RLC reassembly timer expires, it means that at least one of the waiting bytes has not been received.
  • the terminal device triggers to discard the corresponding received UMD PDU.
  • the terminal device sends an RLC status report to the network device to inform the network device which RLC SDU was not received correctly, and the network device retransmits the RLC SDU to the terminal device after receiving the RLC status report.
  • ARQ Automatic repeat request
  • the first device After the first device receives the status report sent by the second device, the first device retransmits data to the second device, where the status report may include an indication and/or indication information of unsuccessful data reception, and the unsuccessful reception
  • the indication of the data may be an identifier of unsuccessfully received data, the indication information is used to indicate that there is unsuccessfully received data, and the indication information may be NACK.
  • the unsuccessfully received data may be RLC SDU, RLC SDU segment, and so on.
  • the first device may be a terminal device and the second device may be a network device, or the first device may be a network device and the second device may be a terminal device.
  • the first device may be referred to as an RLC sending entity
  • the second device may be referred to as an RLC receiving entity.
  • the second device sends the above-mentioned status report to the first device:
  • Condition 1 After the second device receives the probe indication information (also referred to as a polling indication) sent by the first device, the second device sends the above-mentioned status report to the first device.
  • the probe indication information also referred to as a polling indication
  • the polling instruction can be sent in the following manner: the value of a preset field (for example, the P field) in the AMD PDU is set to a preset value (for example, 1), and the AMD PDU is sent. That is, by setting the value of P field in the AMD PDU to 1, and sending the AMD PDU, the polling instruction can be sent.
  • a preset field for example, the P field
  • a preset value for example, 1
  • the second device may send a polling instruction to the first device in any of the following situations:
  • Case 1 The number of AMD PDUs sent by the second device that does not include the polling indication is greater than or equal to the threshold of the number of probe PDUs.
  • the number of AMD PDUs that do not include the polling indication can also be referred to as PDU_WITHOUT_POLL, and the number threshold of the probe PDU can be referred to as pollPDU.
  • case 1 can be recorded as: PDU_WITHOUT_POLL ⁇ pollPDU.
  • Case 2 The number of bytes sent by the second device excluding the bytes indicated by polling is greater than or equal to the byte number threshold.
  • the number of bytes not including the polling indication can be referred to as BYTE_WITHOUT_POLL, and the byte number threshold can be referred to as pollByte.
  • case 2 can also be recorded as: BYTE_WITHOUT_POLL ⁇ pollByte.
  • the probe indication information retransmission timer (also called poll retransmission timer or t-PollRetransmit) expires, and after sending the AMD PDU of the upcoming packet, the transmission buffer and retransmission buffer are both Empty, or there is no new RLC SDU to be sent.
  • the start or restart condition of the poll retransmission timer may be: when AMD PDU containing the polling indication is submitted (submit) to the lower layer. After the status report is sent once, the next status report can be sent after the timer expires.
  • Condition 2 When the second device detects that the AMD PDU reception fails, the second device sends the above-mentioned status report to the first device.
  • the second device After the second device detects that the RLC reassembly timer expires, and the second device determines that the AMD PDU reception fails, the second device sends the above-mentioned status report to the first device.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of this application. Please refer to FIG. 1, including a terminal device 101 and a satellite 102, and wireless communication can be performed between the terminal device 101 and the satellite 102.
  • the network formed between the terminal device 101 and the satellite 102 may also be referred to as NTN.
  • the satellite 102 has the function of a base station, and the terminal device 101 and the satellite 102 can directly communicate with each other. Under the system architecture, the satellite 102 can be referred to as a network device.
  • Fig. 2 is a schematic structural diagram of another communication system provided by an embodiment of the application.
  • FIG. 2 which includes a terminal device 201, a satellite 202, and a base station 203.
  • the terminal device 201 and the satellite 202 can communicate wirelessly, and the satellite 202 and the base station 203 can communicate.
  • the network formed between the terminal device 201, the satellite 202 and the base station 203 may also be referred to as NTN.
  • the satellite 202 does not have the function of a base station, and the communication between the terminal device 101 and the base station 203 needs to be relayed by the satellite 202.
  • the base station 103 can be referred to as a network device.
  • the first device during the communication between the terminal device and the network device, the first device (network device or terminal device) can obtain configuration information, and the configuration information is used to indicate that the first information is repeatedly sent, and accordingly, When the first device sends the first information, it can repeatedly send the first information according to the configuration information. In this way, the first device does not need to send the second device's failure response message (indicating unsuccessful reception of data) after receiving the failure response message from the second device.
  • the second device retransmits the data unsuccessfully received by the second device, reducing the time delay of retransmitting data between the terminal device and the network device, and improving the communication performance between the terminal device and the network device.
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of this application. See Figure 3. The method can include:
  • the first device obtains configuration information.
  • the first device may be a terminal device and the second device may be a network device, or the first device may be a network device and the second device may be a terminal device.
  • the first device may be referred to as an RLC sending entity
  • the second device may be referred to as an RLC receiving entity.
  • the first information is any one of the following information: RLC data, exploration indication information, and status report information.
  • the configuration information is used to indicate that the first information is repeatedly sent.
  • the configuration information may further indicate that the first information is sent according to the first probe parameter.
  • the configuration information may be different.
  • the configuration information corresponding to the different first information will be described, which will not be repeated here.
  • the first device when the first device is different, the first device obtains the configuration information in a different manner.
  • the following describes the manner in which the first device obtains the configuration information.
  • the first device When the first device is a terminal device, the first device can obtain configuration information in the following manner:
  • Method 1 Receive the configuration information sent by the network device.
  • the terminal device may receive second information sent by the network device, and the second information includes the configuration information.
  • the second information may be any one of the following messages: RRC configuration information, MAC control element (CE) information, and downlink control information (DCI).
  • the configuration information is determined by the network device.
  • the network device may assume that the transmission delay between the terminal device and the network device is a larger delay (that is, assume that the distance between the terminal device and the satellite is a larger distance), and based on the larger time delay.
  • this method can be used to generate configuration information.
  • the network device can also obtain the position information of the terminal device and the movement trajectory of the satellite, and determine the distance (or transmission delay) between the terminal device and the satellite according to the position information of the terminal device and the movement trajectory of the satellite. And according to the distance between the terminal equipment and the satellite (or transmission delay) to generate configuration information.
  • the network device can generate accurate configuration information.
  • the network device can periodically update the configuration information of the terminal device, or when the network device determines that the distance between the terminal device and the satellite has changed (or the amplitude of the change is greater than the preset amplitude), the network device updates Configuration information. After the network device updates the configuration information, it can send the updated configuration information to the terminal device.
  • the terminal device can send its location information to the network device. For example, if the terminal device has not sent its location information to the network device, the terminal device sends its location information to the network device, or the location information of the terminal device After the change (or the change amplitude is greater than the preset amplitude), the terminal device sends its location information to the network device.
  • the terminal device predefines the configuration information.
  • the pre-defined configuration information may be preset or agreed upon in an agreement.
  • the predefined configuration information can be stored locally in the terminal device.
  • the terminal device can obtain the configuration information locally.
  • the first device may obtain the configuration information in the following manner: the network device may predefine the configuration information.
  • the pre-defined configuration information may be preset or agreed upon in an agreement.
  • Manner 3 One part of the configuration information is determined by the network device, and the other part of the configuration information is determined by the terminal device.
  • the retransmission times and time information in the configuration information may be determined by the terminal device, and the indication information and retransmission conditions may be determined by the network device.
  • a part determined by the network device and a part determined by the terminal device can be set according to actual needs.
  • the embodiments of the present application do not specifically limit this.
  • the configuration information can also be completely determined by the network device, or completely determined by the terminal device.
  • the configuration information may all be determined by the network device, and in the foregoing manner 2, the configuration information may be all determined by the terminal device.
  • S302 The first device repeatedly sends the first information to the second device according to the configuration information.
  • the first device may repeatedly send the first information to the second device in the following manner: the first device sends multiple pieces of first information to the second device at the same time, or the first device sequentially sends the first information to the second device in a preset order Send multiple pieces of first information, or the first device may periodically send multiple pieces of first information to the second device.
  • the manner in which the first device repeatedly sends the first information to the second device according to the configuration information is also different.
  • the process of the first device repeatedly sending the first information to the second device according to the configuration information is described, and details are not described herein again.
  • the second device processes multiple pieces of first information.
  • the second device processes the first information in a different manner. It should be noted that the processing method of the first information is described in the embodiment shown in FIG. 4 to FIG. 11, which is not repeated here.
  • the first device can obtain configuration information, and the configuration information is used to instruct to repeatedly send the first information.
  • the first device can compare the configuration information to the first device.
  • a message is repeatedly sent, so that the first device does not need to retransmit the unsuccessful data received by the second device to the second device after receiving the failure response message from the second device (indicating that the data was not successfully received).
  • the time delay of retransmission of data between the terminal device and the network device is improved, and the communication performance between the terminal device and the network device is improved.
  • FIG. 4 is a schematic flowchart of another communication method provided by an embodiment of this application. Referring to Figure 4, the method may include:
  • S401 The first device obtains configuration information.
  • the configuration information is used to indicate repeated transmission of RLC data.
  • RLC data may include one or more of the following data: RLC SDU data, RLC SDU segment data, RLC PDU data, RLC PDU segment data.
  • the configuration information may be configured for a certain object in the first device (RLC entity, RLC mode, radio bearer, etc.), that is, the configuration information is configuration information corresponding to a certain object in the first device.
  • RLC entity RLC entity, RLC mode, radio bearer, etc.
  • the configuration information is configuration information corresponding to a certain object in the first device.
  • the configuration information is the configuration information corresponding to the preset RLC entity.
  • the preset RLC entity is the RLC sending entity in the first device.
  • the preset RLC entity may be any one or more RLC entities, or a specific RLC entity.
  • the configuration information is configuration information configured on the preset RLC entity of the first device.
  • the configuration information is configuration information corresponding to the first RLC mode.
  • the first RLC mode includes at least one of the following modes: confirmed mode, non-confirmed mode, or transparent transmission mode.
  • the configuration information is configuration information configured for the first RLC mode of the first device.
  • the configuration information is the corresponding configuration information of the preset RLC entity in the first RLC mode.
  • the first RLC mode includes at least one of the following modes: confirmed mode, non-confirmed mode, or transparent transmission mode.
  • the configuration information is configuration information configured for the preset RLC entity in the first RLC mode of the first device.
  • the configuration information is the configuration information corresponding to the preset radio bearer.
  • the preset radio bearer may be a data radio bearer (DRB).
  • DRB data radio bearer
  • the configuration information is the configuration information of the preset radio bearer configuration of the first device.
  • the configuration information may include at least one of the following information:
  • the first indication information indicates that the RLC data is repeatedly sent.
  • the first indication information may be indication information indicating repeated transmission of data, or the first indication information may be indication information indicating repeated transmission of activation data. For example, when the first indication information indicates that repeated data transmission is activated, and after the first device receives the first indication information, the data repeated transmission function of the first device is activated, so that the first device repeatedly transmits RLC data.
  • the number of repeated transmissions of RLC data is an integer greater than or equal to 2.
  • the number of repeated transmissions can be 2, 3, 4, and so on.
  • the first time information includes a time period
  • the time period may be a time period for the first device to repeatedly send data.
  • the time period may include a start time and an end time.
  • the time period included in the first time information may be 10:00 on January 1, 2019 to 10:10 on January 1, 2019.
  • the first time information includes a start time and/or time length
  • the start time is the time when the first device starts to repeat data transmission
  • the time length is the time length for the first device to repeat data transmission.
  • the first time information may include a start time and an end time, where the start time is the time when the first device starts the repeated data transmission, and the end time is the time when the first device ends the repeated data transmission.
  • the first time information may include first repeated transmission time information and first activation time information.
  • the first repeated transmission time information is used to indicate time information for repeated transmission of RLC data.
  • the first activation time information is used to indicate time information when the repeat sending function of the first device is activated.
  • Both the first retransmission time information and the first activation time information may include a time period, or include a start time and/or duration, or include a start time and an end time, which will not be repeated here.
  • the first condition may include at least one of the following: the channel quality of the first device is less than or equal to the first threshold, and the transmission delay between the first device and the second device is greater than or equal to the second threshold.
  • S402 The first device repeatedly sends RLC data to the second device according to the configuration information.
  • the manner in which the first device repeatedly sends RLC data to the second device according to the configuration information is also different.
  • the configuration information includes the first indication information.
  • the configuration information corresponds to the first RLC sending entity, and the configuration information is locally predefined by the first device, when the first device sends RLC data through the first RLC sending entity, the first device repeats the sending according to the first indication information
  • the number of repeated transmissions can be a preset number of times.
  • the configuration information corresponds to the first RLC sending entity, and the configuration information is received by the first device (assumed as a terminal device) from the second device, after the first device receives the configuration information, the first device When the first RLC sending entity sends RLC data, the first device repeatedly sends the RLC data according to the first indication information, and the number of repeated sending may be a preset number.
  • the configuration information corresponds to other (for example, RLC mode or radio bearer)
  • the manner in which the first device sends RLC data is similar, and details are not described herein again.
  • the configuration information includes the number of repeated sending of RLC data.
  • the first device when the first device sends RLC data through the first radio bearer, the first device repeats according to the number of times included in the configuration information Send RLC data. For example, assuming that the number of repeated sending of RLC data included in the configuration information is 3, when the first device sends the RLC data, the first device sends the RLC data 3 times repeatedly.
  • the first device passes the first device.
  • the RLC data is repeatedly sent according to the number of times included in the configuration information. For example, assuming that the number of repeated sending of RLC data included in the configuration information is 3, when the first device sends the RLC data, the first device sends the RLC data 3 times repeatedly.
  • the configuration information corresponds to other (for example, RLC entity or RLC mode)
  • the manner in which the first device sends RLC data is similar, and details are not described herein again.
  • Case 3 The configuration information includes the first time information for repeatedly sending the RLC data.
  • the configuration information corresponds to the first RLC mode, and the configuration information is locally pre-defined by the first device
  • the first device when the first device sends RLC data through the RLC sending entity in the first RLC mode, the first device has information at the first time
  • the RLC data is repeatedly sent within the indicated time (for example, time period).
  • the first device may repeatedly send RLC data according to a preset number of times.
  • the first device If the configuration information corresponds to the first RLC mode, and the configuration information is received by the first device (assumed as a terminal device) from the second device, after the first device receives the configuration information, the first device When the RLC sending entity in the first RLC mode sends RLC data, the first device repeatedly sends the RLC data within the time (for example, time period) indicated by the first time information.
  • the first device may repeatedly send RLC data according to a preset number of times.
  • the configuration information corresponds to other (for example, RLC entity or radio bearer)
  • the manner in which the first device sends RLC data is similar, and details are not described herein again.
  • the configuration information includes the first condition for sending RLC data.
  • the configuration information corresponds to the first RLC sending entity, and the configuration information is locally predefined by the first device, when the first device sends RLC data through the first RLC sending entity, if the first device satisfies the first condition, then The first device repeatedly sends the RLC data, and the number of repeated sending may be a preset number.
  • the configuration information corresponds to the first RLC sending entity, and the configuration information is received by the first device (assumed as a terminal device) from the second device, then after the first device receives the configuration information, the first device When the first RLC sending entity sends RLC data, if the first device satisfies the first condition, the first device repeatedly sends the RLC data, and the number of repeated sending may be a preset number.
  • the configuration information corresponds to other (for example, RLC mode or radio bearer)
  • the manner in which the first device sends RLC data is similar, and details are not described herein again.
  • the configuration information may also include any two or more of the foregoing information.
  • the first device may send RLC data in a combination of the manners corresponding to the foregoing four cases. For example, assuming that the configuration information includes the number of times of repeatedly sending RLC data and the first condition, when the first device satisfies the first condition, the first device sends the RLC data according to the above-mentioned number of times. For example, assuming that the configuration information includes the number of times the RLC data is repeatedly sent and the first time information, the first device sends the RLC data according to the above-mentioned number of times within the time indicated by the first time information. I will not repeat the description of other information combinations one by one here.
  • the first device may repeatedly send RLC data to the second device in the following manner:
  • the first device sends multiple RLC data to the second device at the same time.
  • Manner 2 The first device sends multiple RLC data to the second device in a preset sequence.
  • Manner 3 The first device periodically sends multiple RLC data to the second device.
  • the first device may send RLC data at time intervals.
  • the time interval may be a preset time interval or a time interval calculated by the terminal device according to the configuration information. For example, assuming that the configuration information includes the number and duration of repeatedly sending RLC data, the first device can calculate the time interval according to the number and duration.
  • the time interval for the first device to send RLC data twice may be the same or different.
  • the first device needs to repeatedly send RLC data three times, and the preset time interval is t. After the first device sends RLC data for the first time, the first device waits for a period of time t and sends the RLC data for the second time, and After sending the RLC data for the second time, the first device waits for the duration t and sends the RLC data for the third time.
  • the first device may not continue to send the data to the second device. send.
  • the second device performs repeated data detection processing and/or repeated data discarding processing on multiple RLC data.
  • the second device may perform repeated data detection processing on multiple RLC data in the following manner: the second device determines that the multiple RLC data is repeated data according to the identifiers of the multiple RLC data.
  • the identifier of the RLC data may be a serial number (SN).
  • the second device may perform repeated data discarding processing on multiple RLC data in the following manner: the second device discards the repeated data. For example, assuming that the number of the multiple repeated RLC data is N (N is an integer greater than or equal to 2), the second device may discard N-1 of the N RLC data.
  • the second device includes a PDCP entity and an RLC entity.
  • the PDCP entity in the second device performs repeated data detection processing and/or repeated data discard processing on RLC SDU data and/or RLC SDU segment data in the RLC data.
  • the RLC entity in the second device performs repeated data detection processing and/or repeated data discard processing on RLC PDU data and/or RLC PDU segment data in the RLC data.
  • the first device can repeatedly send RLC data to the second device according to the configuration information, without receiving the failure response message (indicating the unsuccessful reception of RLC data) sent by the second device.
  • Retransmitting the RLC data to the second device reduces the time delay for the first device to retransmit the RLC data to the second device, and improves the communication performance between the first device and the second device.
  • Fig. 5 is a schematic diagram of a communication process provided by an embodiment of the application.
  • the first device is a terminal device and the second device is a network device.
  • P refers to RLC data.
  • the terminal device Before time t1, if the terminal device does not receive the configuration information sent by the network device, the terminal device does not repeatedly send RLC data when sending RLC data to the network device. For example, referring to Fig. 5, when a terminal device sends RLC data P1, P2, and P3 to a network device, they do not send it repeatedly.
  • the terminal device receives the configuration information sent by the network device, and the configuration information includes the number of repeated sending of RLC data (2).
  • the configuration information is used to instruct the terminal device to repeatedly send RLC data twice.
  • the terminal device After t1, when the terminal device sends RLC data, the terminal device repeatedly sends the RLC data twice. For example, referring to FIG. 5, when the terminal device sends RLC data P4, the terminal device sends the RLC data P4 twice. When the terminal device sends the RLC data P5, the terminal device sends the RLC data P5 twice.
  • the network device since the terminal device repeatedly sends the RLC data P4 and P5 twice, the network device has a higher probability of success in receiving P4 and P5, and the terminal device does not need to receive the network
  • the device feedback that the failure response message of P4 and P5 is not received before retransmitting P4 and P5 to the network device, reducing the delay of the terminal device retransmitting P4 and P5 to the network device, and improving the communication performance of the terminal device and the network device .
  • FIG. 6 is a schematic flowchart of yet another communication method provided by an embodiment of this application. Referring to Figure 6, the method may include:
  • the first device obtains configuration information.
  • the configuration information is used to indicate repeated transmission of the probe indication information (also called polling indication).
  • the discovery indication information is used to instruct the second device to send status report information, that is, after the second device receives the discovery indication information sent by the first device, the second device sends the status report information to the first device.
  • the second device may send the discovery indication information to the first device in the following manner: the second device sends an AMD PDU to the first device, and the value of the preset field in the AMD PDU is a preset value, for example, the preset field may be P field (P field), the preset value may be 1, that is, the second device sends an AMD PDU with the value of P field of 1 to the first device, which is equivalent to the second device sending the probe indication information to the first device.
  • P field P field
  • the preset value may be 1, that is, the second device sends an AMD PDU with the value of P field of 1 to the first device, which is equivalent to the second device sending the probe indication information to the first device.
  • the configuration information may be configured for a certain object in the first device (RLC entity, RLC mode, radio bearer, etc.), that is, the configuration information is configuration information corresponding to a certain object in the first device.
  • RLC entity RLC entity, RLC mode, radio bearer, etc.
  • the configuration information is configuration information corresponding to a certain object in the first device.
  • the configuration information is the configuration information corresponding to the confirmation mode.
  • the configuration information is the configuration information of the confirmation mode configuration of the first device.
  • the configuration information is the configuration information corresponding to the preset RLC entity (RLC sending entity).
  • the preset RLC entity may be any one or more RLC entities, or a specific RLC entity.
  • the configuration information is configuration information configured on the preset RLC entity of the first device.
  • the configuration information is the configuration information corresponding to the preset radio bearer.
  • the preset radio bearer may be DRB.
  • the configuration information is the configuration information of the preset radio bearer configuration of the first device.
  • the content included in the configuration information can refer to the embodiment shown in FIG. 4, and the RLC data in the embodiment of FIG. 4 can be replaced with a polling indication.
  • S602 The first device repeatedly sends the discovery instruction information to the second device according to the configuration information.
  • the first device When the content included in the configuration information is different, the first device repeatedly sends the probe indication information to the second device according to the configuration information in a different manner.
  • the manner in which the first device repeatedly sends the discovery indication information to the second device according to the configuration information refer to Case 1-Case 4 in S402, and replace the first RLC data in S402 with the discovery indication information, which will not be repeated here. .
  • the first device may repeatedly send the discovery indication information in the following manner:
  • the first device sends multiple probe indication information to the second device at the same time.
  • Manner 2 The first device sends a plurality of exploration indication information to the second device in a preset sequence.
  • Manner 3 The first device periodically sends multiple probe indication information to the second device.
  • the first device may send the search indication information according to the time interval.
  • the time interval may be a preset time interval or a time interval calculated by the terminal device according to the configuration information. For example, assuming that the configuration information includes the number and duration of repeated sending of the discovery indication information, the first device may calculate the time interval according to the number and duration.
  • the time interval for the first device to send the probe indication information twice may be the same or different.
  • the first device needs to repeatedly send the discovery instruction information three times, and the preset time interval is t. After the first device sends the discovery instruction information for the first time, the first device waits for a period of time t and sends the second discovery instruction Information, and after sending the exploration instruction information for the second time, the first device waits for the duration t and sends the third exploration instruction information.
  • Manner 3 After the first device sends a probe instruction to the second device, if it receives a failure response message from the second device, the first device repeats sending the next probe instruction to the second device.
  • the failure response message is used to indicate that the second device has not successfully received the probe indication information.
  • the failure response message may be an ARQ NACK message, or a hybrid automatic repeat request (HARQ) NACK message, etc.
  • the first device may not continue to send the data to the second device. send.
  • the second device sends M pieces of status report information corresponding to the probe indication information to the first device.
  • M can be 1, or it can be an integer greater than or equal to 2. If M is an integer greater than or equal to 2, the contents included in the M status report messages are the same.
  • the status report information may include at least one of the following information: an indication of unsuccessful data reception, and an indication that indicates that there is data unsuccessful reception.
  • the indication of unreceived data may be an identifier of unsuccessful data, and the unsuccessful data may be RLC data.
  • the number of search indication information may be N, where N is an integer greater than or equal to 2.
  • the search indication information and the status report information can be in one-to-one correspondence, and correspondingly, M and N are the same.
  • the second device may first generate M pieces of status report information corresponding to the discovery indication information, and then send the M pieces of status report information to the first device. If there is a one-to-one correspondence between the exploration indication information and the status report information, each time the second device receives a piece of exploration indication information, it can generate the status report information corresponding to the exploration indication information.
  • the second device may send the status report information to the first device every time the status report information is generated. Alternatively, the second device may simultaneously send the M pieces of status report information to the first device after generating the M pieces of status report information.
  • the status prohibit timer is used to control the sending of status report information. After the status prohibit timer expires, the next status report information is sent. For example, after sending a status report message, if the status prohibit timer is turned on, the next status report message will not be sent until the status prohibit timer expires. In other words, before the status prohibit timer expires, no Send the next status report message.
  • the way to disable the timer in the on-state is described, which may include the following ways:
  • the status of the status prohibit timer is turned off.
  • the second device Since the second device does not start the state prohibition timer after sending the first K status report information to the first device, there is no need to wait for the state prohibition timer to expire when the second device sends the first K+1 status report information, so that the first The second device can quickly send the first K+1 status report information.
  • K can be M minus 1. In this way, in the process of sending the M status report information, there is no need to wait for the state prohibition timer to expire, so that the efficiency of sending the M status report information is higher.
  • Manner 2 After the second device sends the L status report information corresponding to the discovery indication information to the first device, the second device turns on the status prohibit timer, and L is an integer less than or equal to M.
  • the second device sends the first L-1 status report information to the first device, none of the status prohibit timers are included. In this way, the second device does not need to wait for the state prohibition timer to expire when sending the L status report information, so that the efficiency of sending the L status report information is higher.
  • L is equal to M. In this way, in the process of sending the M status report information, there is no need to wait for the state prohibition timer to expire, so that the efficiency of sending the M status report information is higher.
  • P is an integer greater than or equal to 1.
  • the second device generates and sends status report information corresponding to the exploration indication information after receiving the P exploration indication information.
  • the second device is turned on and prohibits the timer.
  • the second device generates and sends the status report information corresponding to the probe instruction information after each probe instruction information is received.
  • the second device starts the state prohibit timer after receiving the P probe indication information, which can also be understood as: the second device starts the state prohibit timer after sending the P status report information.
  • P is equal to M.
  • the number of state prohibition timers that the second device is turned on may be L, where L is an integer, and 1 ⁇ L ⁇ M.
  • the second device after the second device receives the preset duration of the probe indication information, the second device sends the status report information to the first device and starts the status prohibit timer.
  • the second device after the second device receives the preset duration of the Q probe indication information, the second device sends the status report information to the first device and starts the status prohibit timer.
  • the second device may start the state prohibit timer every time it receives a preset duration of the search indication information. In this way, the second device can periodically send status report information.
  • the number of state prohibition timers that the second device is turned on may be L, where L is an integer, and 1 ⁇ L ⁇ M.
  • S604 The first device retransmits data to the second device according to the M pieces of status report information.
  • the second device After the first device receives the first status report information, the second device can retransmit data to the second device according to the first status report information.
  • the first device may retransmit the data sent within the preset historical period to the second device.
  • the preset historical period may be the current moment The duration corresponding to the previous preset duration.
  • the first device after receiving the status report information, the first device repeatedly sends data when sending data to the second device.
  • the first device retransmits the unsuccessful data to the second device.
  • the first device can repeatedly send the probe indication information to the second device according to the configuration information, so that the second device repeatedly sends the status indication information to the first device, so that the first device can send the status indication information to the first device repeatedly.
  • the instruction information repeatedly sends RLC data to the second device, and there is no need to retransmit the RLC data to the second device after receiving the failure response message sent by the second device (indicating that the RLC data is not successfully received), which reduces the first device to the second device.
  • the time delay for the second device to retransmit the RLC data improves the communication performance between the first device and the second device.
  • FIG. 7 is a schematic diagram of another communication process provided by an embodiment of this application.
  • the first device is a terminal device and the second device is a network device.
  • P refers to RLC PDU.
  • P1, P4, and P8 are polling indicators
  • P2, P3, and P5-P7 are non-polling indicators.
  • the polling indication can be an RLC PDU with a P field of 1
  • the non-polling indication can be an RLC PDU with a P field of 0.
  • the terminal device receives configuration information, and the configuration information includes a first condition, and the first condition is used to indicate that retransmission is performed when the propagation delay between the terminal device and the network device is greater than a threshold.
  • the configuration information also includes the number of retransmission polling indications (3).
  • the terminal device does not repeatedly transmit the polling instruction.
  • the terminal device does not repeatedly send P1 (polling indication).
  • the polling PDU number threshold (pollPDU) is 3, after the terminal device sends P1 (polling indication), the terminal device sends non-polling indications (P2 and P3).
  • the terminal device After time t2, if the propagation delay between the terminal device and the network device is greater than the threshold, the terminal device repeatedly transmits the polling instruction. Referring to FIG. 7, after the propagation delay between the terminal device and the network device is greater than the threshold, the terminal device repeatedly transmits P4 (polling indication). Assuming that the polling PDU number threshold (pollPDU) is 3, the terminal device sends a non-polling indication after repeatedly sending P4. After the terminal device sends three RLC PDUs (P5, P6, and P7) with a P field of 0, the terminal device repeatedly sends P8 (polling indication).
  • P4 polling PDU number threshold
  • the terminal device since the terminal device sends the polling instructions corresponding to P4 and P8, the terminal device repeatedly sends three times, so that the network device can repeatedly send status report information to the terminal device after receiving the polling instruction, and then This allows the terminal device to repeatedly send RLC data to the network device, reduces the retransmission delay between the terminal device and the network device, and improves the communication performance between the terminal device and the network device.
  • FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of this application. Referring to Figure 8, the method may include:
  • S801 The first device obtains configuration information.
  • the configuration information is used to instruct the pair to send probe indication information (also referred to as polling indication) according to the first probe parameter.
  • the discovery indication information is used to instruct the second device to send status report information, that is, after the second device receives the discovery indication information sent by the first device, the second device sends the status report information to the first device.
  • the search indication information may also be referred to as a polling indication.
  • the second device may send a polling instruction to the first device in the following manner: the second device sends an AMD PDU to the first device, and the value of the preset field in the AMD PDU is a preset value, for example, the preset field may be P Field (P field), the preset value can be 1, that is, the second device sends an AMD PDU with the value of P field of 1 to the first device, which is equivalent to the second device sending a polling instruction to the first device.
  • P field P Field
  • the configuration information may be configured for a certain object in the first device (RLC entity, RLC mode, radio bearer, etc.), that is, the configuration information is configuration information corresponding to a certain object in the first device.
  • RLC entity RLC entity, RLC mode, radio bearer, etc.
  • the configuration information is configuration information corresponding to a certain object in the first device.
  • the configuration information is the configuration information corresponding to the confirmation mode.
  • the configuration information is the configuration information of the confirmation mode configuration of the first device.
  • the configuration information is the configuration information corresponding to the preset RLC entity (RLC sending entity).
  • the preset RLC entity may be any one or more RLC entities, or a specific RLC entity.
  • the configuration information is configuration information configured on the preset RLC entity of the first device.
  • the configuration information is the configuration information corresponding to the preset radio bearer.
  • the preset radio bearer may be DRB.
  • the configuration information is the configuration information of the preset radio bearer configuration of the first device.
  • the configuration information includes at least one of the following information:
  • the second indication information is used for instructing to repeatedly send the exploration indication information (polling indication) according to the first exploration parameter.
  • the first device usually sends the polling instruction according to the probe parameter.
  • the polling instruction For the situation that the first device sends the polling instruction, refer to the situation that the second device sends the polling instruction recorded in the foregoing embodiment, which will not be repeated here.
  • Repeatedly sending the search indication information according to the first search parameter means that when a certain condition is met, the first search parameter is used to send the search indication information.
  • the first search parameter usually meets certain conditions after each period of time. Therefore, repeating the sending of the search indication information according to the first search parameter can also be understood as: sending the search indication information according to the first search parameter.
  • the first probe parameter includes at least one of the following: a probe indication information retransmission timer (may also be referred to as the duration of the probe indication information retransmission timer), a threshold value of the number of probe PDUs, and a threshold value of the number of bytes.
  • a probe indication information retransmission timer may also be referred to as the duration of the probe indication information retransmission timer
  • a threshold value of the number of probe PDUs may also be referred to as the duration of the probe indication information retransmission timer
  • a threshold value of the number of bytes may be described:
  • the duration of the t-PollRetransmit timer is less than or equal to a preset duration.
  • the preset duration may be 4ms (milliseconds).
  • the duration of the search indication information retransmission timer may be 1ms, 2ms, 3ms, or 4ms.
  • the preset duration can be set according to actual needs, which is not specifically limited in the embodiment of the present application.
  • the probe indication information retransmission timer is used to control the retransmission of the polling indication.
  • the polling indication can be retransmitted after the probe indication information retransmission timer expires.
  • the duration of the probing indication information retransmission timer included in the first probing parameter is a part of the pre-defined duration of the probing indicator information retransmission timer.
  • the duration of the probing indication information retransmission timer included in the first probing parameter is X time lengths with the shortest duration among the durations of the predefined probing indicator information retransmission timer, and X may be an integer greater than or equal to 1. .
  • the duration of the predefined probe indication information retransmission timer may include: ms1, ms2, ms3, ms4, ms5, ms10, ms15, ms20, ms25, ms30, ms35, ms40, ms45, ms50, ms55, ms60, ms65 , Ms70, ms75, ms80, ms85, ms90, ms95, ms100, ms105, ms110, ms115, ms120, ms125, ms130, ms135, ms140, ms145, ms150, ms155, ms160, ms165, ms170, ms175, ms180, ms185, ms190 , Ms195, ms200, ms205, ms210, ms215, ms195
  • the duration of the seeking indication retransmission timer in the first seeking parameter may be 1ms, 2ms, 3ms, or 4ms. That is, the duration of the seeking instruction retransmission timer in the first seeking parameter is the shortest 4 durations among the durations of the predefined seeking instruction information retransmission timer.
  • the threshold of the number of probe PDUs is less than or equal to the fifth threshold.
  • the threshold of the number of probe PDUs can also be recorded as pollPDU.
  • the fifth threshold may be 3.
  • the threshold of the number of probe PDUs may be 1, 2, or 3.
  • the fifth threshold can be set according to actual needs, which is not specifically limited in the embodiment of the present application.
  • the threshold of the number of probe PDUs is used to control the sending of the polling indication. For example, when the number of first PDUs sent is greater than or equal to the threshold of the number of PDUs, the probe indication information is sent, and the first PDU does not include the Explore instructions.
  • the threshold for the number of probe PDUs included in the first probe parameter may be a part of the threshold for the number of probe PDUs predefined.
  • the threshold of the number of probe PDUs included in the first probe parameter is the smallest Y threshold among the predefined thresholds of the number of probe PDUs, and Y may be an integer greater than or equal to 1.
  • the pre-defined thresholds for the number of discovery PDUs may include: p1, p2, p3, p4, p8, p16, p32, p64, p128, p256, p512, p1024, p2048, p4096, p6144, p8192, p12288, p16384, p20480, p24576, p28672, p32768, p40960, p49152, p57344, p65536, infinity, spare8, spare7, spare6, spare5, spare4, spare3, spare2, spare1.
  • p refers to the number.
  • Spare refers to spare parameters, and can also be called reserved parameters.
  • the threshold of the number of probe PDUs in the first probe parameter may be 1 or 2 or 3. That is, the threshold for the number of probe PDUs in the first probe parameter is the smallest three thresholds among the predefined thresholds for the number of probe PDUs.
  • the byte count threshold is less than or equal to the sixth threshold.
  • the byte count threshold can also be recorded as pollByte.
  • the sixth threshold may be 500 bytes (Byte), and the number of bytes threshold may be 1 byte, 100 bytes, 500 bytes, and so on.
  • the sixth threshold can be set according to actual needs, which is not specifically limited in the embodiment of the present application.
  • the byte count threshold is used to control the sending of the polling indication. For example, when the number of the first byte being sent is greater than or equal to the byte count threshold, the probe indication information is sent, and the first byte does not include the probe indication information.
  • the threshold of the number of bytes included in the first search parameter may be a part of the predefined threshold of the number of bytes.
  • the byte number threshold included in the first search parameter may be the smallest Z thresholds among the predefined byte number thresholds, and Z may be an integer greater than or equal to 1.
  • the predefined byte count threshold may include: B1, B100, B500, kB1, kB2, kB5, kB8, kB10, kB15, kB25, kB50, kB75, kB100, kB125, kB250, kB375, kB500, kB750, kB1000 , KB1250, kB1500, kB2000, kB3000, kB4000, kB4500, kB5000, kB5500, kB6000, kB6500, kB7000, kB7500, mB8, mB9, mB10, mB11, mB12, mB13, mB14, mB15, mB16, mB18, mB20, mB18 , MB30, mB40.
  • B is a byte.
  • kB is the unit of bytes and
  • the threshold of the number of bytes included in the first search parameter may be 1 byte, 100 bytes, or 500 bytes. That is, the threshold of the number of bytes included in the first search parameter is the smallest three thresholds among the predefined thresholds of the number of bytes.
  • the second time information of the search indication information is repeatedly sent according to the first search parameter, the second time information includes the time period, or the second time information includes the start time and/or duration, or the second time information Include the start time and/or end time.
  • the second time information is used to indicate the time when the first device sends the exploration instruction information according to the first exploration parameter, and at other times, the first device sends the exploration instruction information according to other exploration parameters.
  • the other search parameters may be other search parameters except the first search parameter among the predefined search parameters.
  • the second time information includes a time period
  • the time period may be a time period during which the first device sends the probe indication information according to the first probe parameter.
  • the time period may include a start time and an end time.
  • the time period included in the first time information may be 10:00 on January 1, 2019 to 10:10 on January 1, 2019.
  • the second time information includes a start time and/or time length
  • the start time is the time when the first device starts to send data repeatedly
  • the time length is the time for the first device to send data repeatedly.
  • the second time information may include a start time and an end time, where the start time is the time when the first device starts repeated data transmission, and the end time is the time when the first device ends repeated data transmission.
  • the second condition includes at least one of the following: the channel quality of the first device is less than or equal to the third threshold, and the transmission delay between the first device and the second device is greater than or equal to the fourth threshold.
  • S802 The first device repeatedly sends the discovery indication information to the second device according to the configuration information and the first discovery parameter.
  • the manner in which the first device repeatedly sends the discovery indication information to the second device according to the configuration information and the first discovery parameter is also different.
  • the following describes the manner in which the first device sends the discovery indication information to the second device according to the first discovery parameter under several different configuration information, which may include the following multiple situations:
  • the configuration information includes the first indication information.
  • the configuration information corresponds to the first RLC sending entity, and the configuration information is locally predefined by the first device, when the first device sends the probe indication information through the first RLC sending entity, the first device sends it according to the first probe parameter Explore instructions.
  • the configuration information corresponds to the first RLC sending entity, and the configuration information is received by the first device (assumed as a terminal device) from the second device, after the first device receives the configuration information, the first device When the first RLC sending entity sends the probe instruction information, the first device sends the probe instruction information according to the first probe parameter.
  • the manner in which the first device sends the probe indication information according to the first probe parameter is similar, and will not be repeated here.
  • the configuration information is the second configuration information.
  • the configuration information includes second time information for repeatedly sending the search indication information according to the first search parameter.
  • the configuration information corresponds to the first RLC mode, and the configuration information is locally predefined by the first device, when the first device sends the probe indication information through the RLC sending entity in the first RLC mode, the first device will Within the time (for example, time period) indicated by the information, the first device sends the exploration indication information according to the first exploration parameter.
  • the configuration information corresponds to the first RLC mode, and the configuration information is received by the first device (assumed as a terminal device) from the second device, after the first device receives the configuration information, the first device When the RLC sending entity in the first RLC mode sends the probe indication information, the first device sends the probe indication information according to the first probe parameter within the time (for example, time period) indicated by the second time information.
  • the manner in which the first device sends the probe indication information according to the first probe parameter is similar, and will not be repeated here.
  • Configuration information The first configuration information.
  • the configuration information includes a second condition for sending the exploration instruction information according to the first exploration parameter.
  • the configuration information corresponds to the first RLC sending entity, and the configuration information is locally predefined by the first device, when the first device sends the probe indication information through the first RLC sending entity, if the first device satisfies the first condition, Then the first device sends the exploration instruction information according to the first exploration parameter.
  • the configuration information corresponds to the first RLC sending entity, and the configuration information is received by the first device (assumed as a terminal device) from the second device, after the first device receives the configuration information, the first device When the first RLC sending entity sends the probe indication information, if the first device satisfies the first condition, the first device sends the probe indication information according to the first probe parameter.
  • the manner in which the first device sends the probe indication information according to the first probe parameter is similar, and will not be repeated here.
  • the configuration information can also include any two or more of the above information.
  • the first device can use the combination of the methods corresponding to the above 3 cases according to the first search
  • the parameter sends the discovery instruction information. For example, assuming that the configuration information includes the second time information and the second condition, when the first device meets the second condition, the first device sends data according to the first probe parameter within the time indicated by the second time information. Explore instructions. I will not repeat the description of other information combinations one by one here.
  • the duration of the probe indication information retransmission timer, the threshold of the number of probe PDUs, and the threshold of the number of bytes in the first probe parameter are all relatively small. Therefore, the first device sends the probe indication information according to the first probe parameter.
  • the frequency of is higher, that is, the time interval between every two adjacent probe instructions sent by the first device according to the first probe parameter is smaller, so that the first device can send the probe instruction information to the second device in time.
  • the second device sends the status report information corresponding to the probe indication information to the first device.
  • the second device After receiving the discovery indication information sent by the first device, the second device generates status report information corresponding to the discovery indication information, and sends the status report information to the first device.
  • the second device Since the first device sends the probe indication information to the second device more frequently, the second device sends the status report information to the first device more frequently, that is, every two devices sent by the second device to the first device The time interval between adjacent status report information is small, so that the second device can send the status report information to the first device in time.
  • S804 The first device retransmits the data to the second device according to the status report information.
  • S804 For the execution process of S804, refer to S604, which will not be repeated this time.
  • S804 and S604 The difference between S804 and S604 is that in S804, the first device receives a piece of status report information, and retransmits data to the second device according to the piece of status report information.
  • the first device since the duration of the retransmission timer, the threshold value of the number of probe PDUs, and the threshold value of the number of bytes in the first probe parameter are all small, the first device uses the first probe parameter
  • the frequency of sending the exploration indication information to the second device is relatively high, that is, the time interval between every two adjacent exploration indication information sent by the first device according to the first exploration parameter is small, so that the first device can send the information to the first device in time.
  • the second device sends the discovery instruction information.
  • FIG. 9 is a schematic diagram of another communication process provided by an embodiment of this application.
  • the first device is a terminal device and the second device is a network device.
  • P refers to RLC PDU.
  • P1, P5, P6, P8, and P10 are polling indicators
  • P2-P4, P7, and P9 are non-polling indicators.
  • the polling indication can be an RLC PDU with a P field of 1
  • the non-polling indication can be an RLC PDU with a P field of 0.
  • the terminal device receives configuration information, and the configuration information includes a second condition.
  • the second condition is used to indicate that the first probe parameter is used to transmit the polling instruction when the propagation delay between the terminal device and the network device is greater than the threshold.
  • the first probe parameter includes a probe PDU number threshold (pollPDU) of 1.
  • the terminal device transmits the polling indication according to the second probe parameter, assuming that the threshold of the number of probe PDUs in the second probe parameter (pollPDU ) Is 3, then the terminal device transmits a polling indication every 3 RLC PDUs with a P domain of 0. For example, referring to FIG. 9, after transmitting P1 (polling indication), the terminal device transmits three RLC PDUs (P2, P3, and P4) with a P domain of 0, and then transmits P5 (polling indication).
  • the terminal device After time t2, if the propagation delay between the terminal device and the network device is greater than the threshold, the terminal device transmits the polling indication according to the first probe parameter. Since the first probe parameter includes a polling PDU number threshold (pollPDU) of 1, the terminal device transmits a polling indication every interval of one RLC PDU with a P field of 0.
  • P6, P8, and P9 transmitted by the terminal device are polling instructions, and P7 and P9 are non-polling instructions.
  • the frequency of sending probe indication information to the network device by the terminal device according to the first probe parameter is higher, that is, the terminal
  • the time interval between every two adjacent exploration indication information sent by the device according to the first exploration parameter is small, so that the terminal device can send the exploration indication information to the network device in time.
  • FIG. 10 is a schematic flowchart of still another communication method provided by an embodiment of this application. Referring to Figure 10, the method can include:
  • the first device obtains configuration information.
  • the configuration information is used to indicate repeated transmission of the status report information.
  • the status report information is used to indicate the RLC data transmission status of the second device, or instruct the second device to retransmit the RLC data.
  • the RLC data transmission status of the second device may be transmission success or transmission failure.
  • the status report information may instruct the second device to retransmit the data, and the data retransmitted by the second device is the first The device did not receive successful data.
  • the configuration information may be configured for a certain object in the first device (RLC entity, RLC mode, radio bearer, etc.), that is, the configuration information is configuration information corresponding to a certain object in the first device.
  • RLC entity RLC entity, RLC mode, radio bearer, etc.
  • the configuration information is configuration information corresponding to a certain object in the first device.
  • the configuration information is the configuration information corresponding to the confirmation mode.
  • the configuration information is the configuration information of the confirmation mode configuration of the first device.
  • the configuration information is the configuration information corresponding to the preset RLC entity (RLC sending entity).
  • the preset RLC entity may be any one or more RLC entities, or a specific RLC entity.
  • the configuration information is configuration information configured on the preset RLC entity of the first device.
  • the configuration information is the configuration information corresponding to the preset radio bearer.
  • the preset radio bearer may be DRB.
  • the configuration information is the configuration information of the preset radio bearer configuration of the first device.
  • the content included in the configuration information can refer to the embodiment shown in FIG. 4, and the RLC data in the embodiment of FIG. 4 can be replaced with status report information.
  • the first device repeatedly sends status report information to the second device according to the configuration information.
  • execution process of S1002 can be referred to the execution process of S402, and the RLC data in the embodiment of FIG. 4 can be replaced with status report information.
  • the second device retransmits data to the first device according to the status report information.
  • S1004 For the execution process of S1004, refer to S604, which will not be repeated this time.
  • S1004 and S604 The difference between S1004 and S604 is that in S1004, the second device receives a piece of status report information, and retransmits data to the first device according to the piece of status report information.
  • the first device can repeat the status report information to the second device according to the configuration information, so that the second device repeatedly sends RLC data to the first device without receiving a failed transmission from the first device.
  • FIG. 11 is a schematic diagram of still another communication process provided by an embodiment of this application.
  • the first device is a terminal device and the second device is a network device.
  • P refers to status report information.
  • the terminal device Before time t1, if the terminal device does not receive the configuration information sent by the network device, the terminal device does not repeatedly send the status report information when sending the status report information to the network device. For example, referring to FIG. 11, when the terminal device sends the status report information P1, P2, and P3 to the network device, it does not repeat the sending.
  • the terminal device receives the configuration information sent by the network device, and the configuration information includes the number of times the status report information is repeatedly sent (2).
  • the configuration information is used to instruct the terminal device to repeatedly send the status report information twice.
  • the terminal device sends the status report information twice. For example, referring to FIG. 5, when the terminal device sends the status report information P4, the terminal device sends the status report information P4 twice. When the terminal device sends the status report information P5, the terminal device sends the status report information P5 twice.
  • the network device can repeatedly send RLC data to the terminal device, reducing the terminal device’s cost to the network device.
  • the retransmission time delay between the terminals improves the communication performance of the terminal equipment and the network equipment.
  • FIG. 12 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • the communication device 10 may be set in a first device, and the first device may be a terminal device or a network device.
  • the communication device 10 includes a processing module 11 and a sending module 12, where:
  • the processing module 11 is configured to obtain configuration information, where the configuration information is used to instruct to repeatedly send the first information;
  • the sending module 12 is configured to repeatedly send the first information to the second device according to the configuration information.
  • the communication device provided in the embodiment of the present application can execute the technical solution described in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and details are not described herein again.
  • the first information is any one of the following information:
  • Probe indication information where the probe indication information is used to instruct the second device to send status report information
  • Status report information where the status report information is used to indicate the RLC data transmission status of the first device, or instruct the second device to retransmit the RLC data.
  • the RLC data includes one or more of the following data: RLC service data unit SDU data, RLC SDU segment data, RLC protocol data unit PDU data, and RLC PDU segment data.
  • the configuration information includes at least one of the following information:
  • First indication information where the first indication information indicates to repeatedly send the first information
  • the first time information of the first information is repeatedly sent, and the first time information includes a time period, or the first time information includes a start time and/or duration, or the first time information includes Including the start time and end time;
  • the first condition for repeatedly sending the first information includes at least one of the following: the channel quality of the first device is less than or equal to a first threshold, and the first device and the second device are The transmission delay between time is greater than or equal to the second threshold.
  • the first information is search indication information;
  • the configuration information includes at least one of the following information:
  • Second indication information where the second indication information is used to instruct to repeatedly send the first information according to the first probe parameter
  • the second time information of the first information is repeatedly sent according to the first search parameter, the second time information includes a time period, or the second time information includes a start time and/or duration, or, The second time information includes a start time and/or an end time;
  • the second condition for repeatedly sending the first information according to the first search parameter where the second condition includes at least one of the following: the channel quality of the first device is less than or equal to a third threshold, and the first device The transmission delay with the second device is greater than or equal to the fourth threshold.
  • the first probe parameter includes at least one of the following: a probe indication information retransmission timer, a threshold value for the number of probe PDUs, and a threshold value for the number of bytes.
  • the duration of the probe indication information retransmission timer is less than or equal to a preset duration
  • the threshold of the number of probe PDUs is less than or equal to the fifth threshold
  • the threshold of the number of bytes is less than Or equal to the sixth threshold.
  • the sending module 12 is specifically configured to:
  • the probe indication information is sent, and the first PDU does not include the probe indication information; and/or,
  • the probe indication information is sent, and the first byte does not include the probe indication information.
  • the first information is RLC data
  • the configuration information is the configuration information corresponding to the preset RLC entity, or the configuration information is the configuration information corresponding to the first RLC mode, or the configuration information is the configuration information corresponding to the preset RLC entity in the first RLC mode Information, or, the configuration information is configuration information corresponding to a preset radio bearer; wherein, the first RLC mode includes at least one of the following modes: confirmed mode, non-confirmed mode, or transparent transmission mode.
  • the first information is search indication information
  • the configuration information is configuration information corresponding to the confirmation mode, or the configuration information is configuration information corresponding to a preset RLC entity, or the configuration information is configuration information corresponding to a preset radio bearer.
  • the first information is status report information
  • the configuration information is configuration information corresponding to the confirmation mode, or the configuration information is configuration information corresponding to a preset RLC entity, or the configuration information is configuration information corresponding to a preset radio bearer.
  • the preset radio bearer is a data radio bearer DRB.
  • the first device is a terminal device
  • the second device is a network device
  • the first device is a network device, and the second device is a terminal device; or,
  • the first device is an RLC sending entity
  • the second device is an RLC receiving entity
  • FIG. 13 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 10 further includes a receiving module 13, wherein,
  • the receiving module 13 is configured to receive the configuration information from the second device.
  • the receiving module 13 is specifically configured to:
  • the second information is any one of the following messages: RRC configuration information, medium access control MAC control unit CE information, and downlink control information DCI.
  • the sending module 12 is further configured to:
  • the sending module 12 is specifically configured to:
  • the sending module does not send the location information to the second device, or when the location information of the first device changes, the first device sends the location information of the first device to the second device. location information.
  • the first device is a network device
  • the second device is a terminal device
  • the receiving module 13 is further configured to receive the location information of the second device sent by the second device;
  • the processing module 11 is further configured to determine the configuration information according to the location information of the second device.
  • processing module 11 is specifically configured to:
  • the configuration information is determined according to the position information of the second device and the movement track of the satellite.
  • the communication device provided in the embodiment of the present application can execute the technical solution described in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and details are not described herein again.
  • FIG. 14 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 20 may be set in a second device, and the second device may be a terminal device or a network device.
  • the first device shown in FIGS. 12-13 is a terminal device
  • the second device is a network device
  • the first device is a network device
  • the second device is a terminal device.
  • the communication device 20 includes a receiving module 21 and a processing module 22, where:
  • the receiving module 21 is configured to receive multiple pieces of first information repeatedly sent by the first device, and the multiple pieces of first information have the same identifier;
  • the processing module 22 is configured to process the multiple pieces of first information.
  • the communication device provided in the embodiment of the present application can execute the technical solution described in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and details are not described herein again.
  • the first information is any one of the following information:
  • Probe indication information where the probe indication information is used to instruct the second device to send status report information
  • Status report information where the status report information is used to indicate the RLC data transmission status of the first device, or instruct the second device to retransmit the RLC data.
  • the RLC data includes one or more of the following data: RLC service data unit SDU data, RLC SDU segment data, RLC protocol data unit PDU data, and RLC PDU segment data.
  • the first information is RLC data; the processing module 22 is specifically configured to:
  • processing module 22 is specifically configured to:
  • the identifiers of the multiple pieces of first information it is determined that the multiple pieces of first information are repeated data.
  • processing module 22 is specifically configured to:
  • the duplicate data is discarded.
  • the RLC data includes at least one of RLC SDU data or RLC SDU segment data; the processing module 22 is specifically configured to:
  • the RLC data includes at least one of RLC PDU data or RLC PDU segment data; the processing module 22 is specifically configured to:
  • FIG. 15 is a schematic structural diagram of still another communication device provided by an embodiment of this application. Based on the embodiment shown in FIG. 14, referring to FIG. 15, the communication device 20 further includes a sending module 23, wherein,
  • the sending module 23 is configured to send M pieces of status report information corresponding to the first information to the first device, where M is an integer greater than or equal to 2.
  • the contents included in the M pieces of status report information are the same.
  • the status of the status prohibit timer is off, where: The status prohibit timer is used to control the sending of status report information. After the status prohibit timer expires, the next status report information is sent, and the K is an integer greater than or equal to 1.
  • the K is the M minus one.
  • processing module 22 is further configured to:
  • the L is an integer less than or equal to the M.
  • the first information is search indication information; the processing module 22 is further configured to:
  • the state prohibit timer is turned on, and the P is an integer greater than or equal to 1.
  • the first information is search indication information; the processing module 22 is further configured to:
  • the state prohibit timer is turned on.
  • the probe indication information is an AM protocol data unit PDU
  • the value of the preset field in the AMD PDU is a preset value
  • the first information is status report information; the sending module 23 is further configured to:
  • the first information includes at least one of the following information: the indication of unsuccessful data reception, and the indication information indicating that there is data unsuccessful reception.
  • the first device is a terminal device
  • the second device is a network device
  • the first device is a network device, and the second device is a terminal device; or,
  • the first device is an RLC sending entity
  • the second device is an RLC receiving entity
  • the communication device provided in the embodiment of the present application can execute the technical solution described in the foregoing method embodiment, and its implementation principles and beneficial effects are similar, and details are not described herein again.
  • FIG. 16 is a schematic structural diagram of a terminal device provided by an embodiment of the application.
  • the terminal device 30 may include: a transceiver 31, a memory 32, and a processor 33.
  • the transceiver 31 may include: a transmitter and/or a receiver.
  • the transmitter can also be referred to as a transmitter, a transmitter, a transmitting port, or a transmitting interface
  • the receiver can also be referred to as a receiver, a receiver, a receiving port, or a receiving interface, and other similar descriptions.
  • the transceiver 31, the memory 32, and the processor 33 are connected to each other through a bus 34.
  • the memory 32 is used to store program instructions
  • the processor 33 is configured to execute program instructions stored in the memory, so as to enable the terminal device 30 to execute any of the communication methods shown above.
  • the receiver of the transceiver 31 can be used to perform the receiving function of the terminal device in the above-mentioned communication method.
  • the transmitter of the transceiver 31 can be used to perform the transmitting function of the terminal device in the above-mentioned communication method.
  • FIG. 17 is a schematic structural diagram of a network device provided by an embodiment of the application.
  • the network device 40 may include: a transceiver 41, a memory 42, and a processor 43.
  • the transceiver 41 may include: a transmitter and/or a receiver.
  • the transmitter can also be referred to as a transmitter, a transmitter, a transmitting port, or a transmitting interface
  • the receiver can also be referred to as a receiver, a receiver, a receiving port, or a receiving interface, and other similar descriptions.
  • the transceiver 41, the memory 42, and the processor 43 are connected to each other through a bus 44.
  • the memory 42 is used to store program instructions
  • the processor 43 is configured to execute the program instructions stored in the memory, so as to enable the terminal device 30 to execute any of the communication methods shown above.
  • the transmitter of the transceiver 41 can be used to perform the sending function of the network device in the above-mentioned communication method.
  • An embodiment of the present application provides a computer-readable storage medium that stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, it is used to implement the above-mentioned communication method.
  • the embodiments of the present application may also provide a computer program product, which can be executed by a processor, and when the computer program product is executed, it can implement the communication method executed by any of the terminal devices shown above.
  • the embodiments of the present application may also provide a computer program product, which can be executed by a processor, and when the computer program product is executed, it can implement the communication method executed by any of the aforementioned network devices.
  • the terminal device, computer-readable storage medium, and computer program product of the embodiments of the present application can execute the communication method executed by the above-mentioned terminal device.
  • the specific implementation process and beneficial effects refer to the above, and will not be repeated here.
  • the network device, computer-readable storage medium, and computer program product of the embodiments of the present application can execute the communication method executed by the above-mentioned network device.
  • the specific implementation process and beneficial effects refer to the above, and will not be repeated here.
  • All or part of the steps in the foregoing method embodiments may be implemented by a program instructing relevant hardware.
  • the aforementioned program can be stored in a readable memory.
  • the program executes the steps including the above-mentioned method embodiments; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, abbreviation: ROM), RAM, flash memory, hard disk, Solid state hard disk, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.
  • These computer program instructions can be provided to the processing unit of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing equipment can be used to generate It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • the term “including” and its variations may refer to non-limiting inclusion; the term “or” and its variations may refer to “and/or”.
  • the terms “first”, “second”, etc. in this application are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence.
  • “plurality” means two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone.
  • the character “/” generally indicates that the associated objects are in an "or” relationship.

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Abstract

Les modes de réalisation de la présente demande concernent un procédé et un appareil de communication, et un dispositif. Ledit procédé comprend les étapes suivantes : un premier dispositif acquiert des informations de configuration, les informations de configuration étant utilisées pour indiquer l'envoi répété de premières informations, et le premier dispositif envoie de manière répétée les premières informations à un second dispositif selon les informations de configuration. La présente demande réduit le retard de retransmission de données entre le dispositif terminal et le dispositif de réseau.
PCT/CN2020/073308 2020-01-20 2020-01-20 Procédé et appareil de communication, et dispositif WO2021146863A1 (fr)

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