WO2022152044A1 - Procédé de transmission de données, équipement terminal, dispositif côté réseau et support d'enregistrement lisible par ordinateur - Google Patents

Procédé de transmission de données, équipement terminal, dispositif côté réseau et support d'enregistrement lisible par ordinateur Download PDF

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Publication number
WO2022152044A1
WO2022152044A1 PCT/CN2022/070582 CN2022070582W WO2022152044A1 WO 2022152044 A1 WO2022152044 A1 WO 2022152044A1 CN 2022070582 W CN2022070582 W CN 2022070582W WO 2022152044 A1 WO2022152044 A1 WO 2022152044A1
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WIPO (PCT)
Prior art keywords
data transmission
terminal
logical channel
data
side device
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PCT/CN2022/070582
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English (en)
Chinese (zh)
Inventor
苗金华
谌丽
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大唐移动通信设备有限公司
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Publication of WO2022152044A1 publication Critical patent/WO2022152044A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/188—Time-out mechanisms

Definitions

  • the present application relates to the field of communication technologies, and in particular, the present application relates to a data transmission method, a terminal device, a network-side device, and a computer-readable storage medium.
  • the service requirement parameters of some communication services also introduce survival time, which is used to characterize the availability of services.
  • the channel After the survival time expires, the channel is considered unreliable.
  • the current solutions are all implemented on the network side equipment, and there is no corresponding solution for the terminal side equipment.
  • the present application provides a data transmission method, a terminal, a network-side device and a computer-readable storage medium, which can at least solve the problem that the terminal cannot meet the service transmission quality of service QoS performance by improving service reliability when it finds that uplink data transmission fails.
  • a data transmission method executed by a terminal, the method includes: when uplink data transmission fails, starting a first device for timing; when the timing of the first device satisfies a condition, executing data transfer operation.
  • the first device includes: a first timer or a first counter.
  • the condition that the timing of the first device satisfies includes: the timing of the first timer exceeds a predetermined time period; or, the count of the first counter reaches a predetermined count value.
  • the predetermined duration or the predetermined count value is determined by a time-to-live corresponding to the first logical channel group, and the time-to-live is corresponding to the first logical channel group by the network-side device
  • the bearer configuration is obtained.
  • the situation that the uplink data transmission fails includes at least one of the following: when the terminal is ready to perform uplink UL data transmission, the data packet is de-prioritized; the terminal is ready to perform the UL data transmission During transmission, a listen-before-talk LBT failure occurs; during the process of the terminal performing the UL data transmission, the transmission of the data packet is interrupted; after the UL data transmission, a retransmission of the data packet sent by the network side device is received Scheduling information; after the UL data is transmitted, a feedback message sent by the network side device indicating that the data packet transmission fails is received; the configuration of the terminal authorizes the retransmission timer CGRT to time out.
  • the performing the data transmission operation includes at least one of the following: retransmitting the first data packet with a preset number of repetitions, where the preset number of repetitions is greater than or equal to 2; using a first modulation and coding manner The first data packet is retransmitted on the configured transmission resources, and the MCS value of the first modulation and coding scheme is lower than the MCS value of the original modulation and coding scheme for transmitting the first data packet; the first data packet is transmitted in the copy mode,
  • the replication mode includes aggregate carrier CA replication mode or dual-connection DC replication mode; the first data packet is transmitted on the second logical channel, wherein the priority of the second logical channel is higher than the priority of the first logical channel level, the first logical channel and the second logical channel are both logical channels in the first logical channel group.
  • the first data packet includes any one of the following data packets: a data packet whose priority is reduced; a data packet whose transmission is interrupted; a data packet that is not transmitted due to LBT failure; the network The side device feeds back the data packet that failed to transmit; after the CGRT times out, the network side device does not receive the data packet that the transmission is successfully transmitted; the newly transmitted data packet.
  • the method further includes: when the first data packet is successfully transmitted At the time of transmission, the subsequent uplink data packets are transmitted on the configured transmission resources in the first modulation and coding manner.
  • the predetermined duration of the first timer is configured by a network-side device, and the first timer is configured by the network-side device for the first logical channel group of the terminal, so
  • the first logical channel group includes two or more logical channels;
  • the first counter counts the data packets that fail to transmit in the first logical channel group, and the predetermined count value of the first counter is determined by the The network side device is configured, and the first counter is configured by the network side device for the first logical channel group of the terminal.
  • the method further includes: when the terminal performs data transmission successfully, triggering the first device to shut down.
  • the situation that the terminal successfully performs data transmission includes at least one of the following: receiving a feedback message sent by the network side device indicating successful data transmission; receiving a message sent by the network side device for the first New transmission scheduling information for a logical channel group; the configuration of the terminal authorizes the CGT timer to expire.
  • the method further includes: reporting indication information to the network side device, where the indication information is used to indicate that the first logical channel is unreliable.
  • the method further includes: starting the second device for timing.
  • the reporting of the indication information to the network side device includes: when the timing of the second device satisfies the condition, reporting the indication information to the network side device.
  • a data transmission method performed by a network side device, the method includes: determining a configuration parameter of a first device; configuring the first device for a first logical channel group of a terminal, so that the terminal When the data transmission fails, the first device for timing is started, wherein the first logical channel group includes two or more logical channels.
  • the determining the configuration parameter of the first device includes: configuring a time-to-live for a bearer corresponding to the first logical channel group; and determining the configuration parameter of the first device according to the time-to-live.
  • the configuring the first device for the first logical channel group of the terminal includes: configuring configuration parameters of the first device to the terminal through an RRC reconfiguration message.
  • the method further includes: receiving indication information reported by the terminal, where the indication information is used to indicate that the first logical channel is unreliable.
  • a terminal device including: a memory for storing a computer program; a transceiver for sending and receiving data under the control of the processor; a processor for reading a computer in the memory
  • the program also executes the following operations: when the uplink data transmission fails, start the first device for timing; when the timing of the first device satisfies the condition, execute the data transmission operation.
  • the first device includes: a first timer or a first counter.
  • the condition that the timing of the first device satisfies includes: the timing of the first timer exceeds a predetermined time period; or, the count of the first counter reaches a predetermined count value.
  • the processor is further configured to trigger the first device to shut down when the terminal performs data transmission successfully.
  • the transceiver is specifically configured to report indication information to the network side device, where the indication information is used to indicate that the first logical channel is unreliable.
  • a network-side device including: a memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading a computer in the memory program and perform the following operations: determine the configuration parameters of the first device; configure the first device for the first logical channel group of the terminal, so that when the terminal fails to perform data transmission, start the first device for timing, Wherein, the first logical channel group includes two or more logical channels.
  • the processor is further configured to configure a time-to-live for a bearer corresponding to the first logical channel group; and determine a configuration parameter of the first device according to the time-to-live.
  • the transceiver is specifically configured to receive indication information reported by the terminal, where the indication information is used to indicate that the first logical channel is unreliable.
  • a terminal device comprising: an execution unit, configured to start a first device for timing when uplink data transmission fails; and execute a data transmission operation when the timing of the first device satisfies a condition .
  • a network-side device comprising: a determining unit configured to determine configuration parameters of a first device; a configuration unit configured to configure the first device for a first logical channel group of a terminal, so that the When the terminal fails to perform data transmission, the first device for timing is started, wherein the first logical channel group includes two or more logical channels.
  • a computer-readable storage medium where a computer program is stored in the computer-readable storage medium, and the computer program is used to cause the processor to execute the first aspect or the second aspect of the claim. method.
  • FIG. 1 is a schematic flowchart of a data transmission method according to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present application.
  • FIG. 3 is an interactive schematic diagram of a data transmission method provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a network side device according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a network side device according to an embodiment of the present application.
  • the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet Wireless service (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband Code Division Multiple Access
  • general packet Wireless service general packet Radio service
  • GPRS general packet Wireless service
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • time division duplex time division duplex
  • TDD Time division duplex
  • the terminal device involved in the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the name of the terminal device may be different.
  • the terminal device may be called user equipment (User Equipment, UE).
  • Wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via a radio access network (Radio Access Network, RAN).
  • RAN Radio Access Network
  • "telephone) and computers with mobile terminal equipment eg portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
  • Wireless terminal equipment may also be referred to as system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in the embodiments of the present application.
  • the network side device involved in the embodiments of the present application may be a base station, and the base station may include a plurality of cells providing services for the terminal.
  • the base station may also be called an access point, or may be a device in the access network that communicates with wireless terminal equipment through one or more sectors on the air interface, or other names.
  • the network-side device can be used to exchange received air frames with Internet Protocol (IP) packets, and act as a router between the wireless terminal device and the rest of the access network, where the rest of the access network can include Internet Protocol (IP) communication network.
  • IP Internet Protocol
  • the network side equipment can also coordinate the attribute management of the air interface.
  • the network-side device involved in the embodiments of the present application may be a network-side device (Base Transceiver Station) in a Global System for Mobile Communications (GSM) or a Code Division Multiple Access (Code Division Multiple Access, CDMA).
  • BTS Global System for Mobile Communications
  • BTS can also be a network side device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolution in a long term evolution (LTE) system type network side equipment (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in 5G network architecture (next generation system), or Home evolved Node B (HeNB), relay node (relay node), home base station (femto), pico base station (pico), etc., are not limited in the embodiments of this application.
  • the network-side device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node, and the centralized unit and
  • One or more antennas can be used for multi-input multi-output (MIMO) transmission between the network-side device and the terminal device.
  • the MIMO transmission can be single-user MIMO (Single User MIMO, SU-MIMO) or multi-user MIMO.
  • MIMO Multiple User MIMO, MU-MIMO
  • MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission.
  • the service requirement parameters of some communication services also introduce survival time, which is used to characterize the availability of services.
  • the survival time is activated, and the subsequent data packets can be transmitted correctly within the survival time, and the service transmission is considered to be available.
  • the data packet is not transmitted correctly within the survival time, and the data packet still cannot be transmitted correctly until the survival time expires, the communication link between the source device and the target device is considered to be unavailable.
  • the talk time is longer than the survival time.
  • the call service is dropped at a certain moment during the conversation between the two parties, if the communication can be resumed within a few seconds (the survival time) and the two parties can continue the content of the call, then the call service is considered reliable; if If the communication has not been restored after 1 minute (the survival time has expired), and the two parties cannot continue the call, the call service is considered to be unreliable.
  • 3GPP has not yet introduced an effective solution for terminal equipment to reduce service reliability due to survival time timeout and cannot meet the reliability requirements of service transmission. That is: when the terminal finds that more than N uplink UL data packets are lost, causing the packet loss time in UL data transmission to be longer than the survival time (survival time timeout), the service reliability is reduced and cannot meet the reliability requirements of service transmission, and cannot be recovered. Reliability of business transmission.
  • the data transmission method, apparatus, electronic device, and computer-readable storage medium provided by the present application aim to at least solve the above technical problems of the prior art.
  • the embodiment of the present application provides a data transmission method: for the situation that the service reliability is reduced due to the survival time timeout, and the reliability requirements of the service transmission cannot be met, an effective solution implemented by a terminal device is provided.
  • the first device used for timing is activated, and when the timing of the first device meets the conditions, the data transmission operation is performed, so as to improve the reliability of service transmission and meet the service quality of service transmission. QoS performance requirements.
  • An embodiment of the present application provides a data transmission method 10. As shown in FIG. 1, the method is executed by a terminal, and the method includes: 110. When uplink data transmission fails, start a first device for timing; 120. When the timing of the first device satisfies the condition, a data transmission operation is performed.
  • the first device includes: a first timer or a first counter.
  • the first timer is started to count, or the first counter is started and the data packets that fail to be transmitted in the first logical channel are counted.
  • the condition that the timing of the first device satisfies includes: the timing of the first timer exceeds a predetermined time period; or, the count of the first counter reaches a predetermined count value.
  • the predetermined duration or the predetermined count value is determined by the survival time corresponding to the first logical channel group.
  • the time-to-live is obtained by the network side device configured for the bearer corresponding to the first logical channel group.
  • the predetermined duration of the first timer is configured by the network side device, the first timer is configured by the network side device for the first logical channel group of the terminal, and the first logical channel group includes two or multiple logical channels; the first counter counts the data packets that fail to transmit in the first logical channel group, the predetermined count value of the first counter is configured by the network side device, the first The counter is configured by the network side device for the first logical channel group of the terminal.
  • a first timer or a first counter may be configured for the logical channel used by the terminal to transmit uplink data through the network side device.
  • the terminal performs the data transmission operation, so as to solve the problem that the terminal cannot satisfy the QoS performance of the service transmission quality of service by improving the reliability when it finds that the current transmission cannot satisfy the reliability of the data transmission.
  • the transmission time of each data packet in the data transmission process can be predicted, when the number of failed data packets in the first logical channel group reaches the maximum count value of the counter, the The packet loss time of uplink data transmission is greater than the survival time, the logical channel does not meet the reliability requirements, and the terminal needs to perform data transmission operations to improve and restore the reliability of service transmission in time.
  • the predetermined duration or the predetermined count value is determined by the time-to-live corresponding to the first logical channel group, and the time-to-live is determined by the network-side device for the time corresponding to the first logical channel group
  • the bearer configuration is obtained.
  • the network side device configures the length of the first timer or the maximum count value of the first counter for the first logical channel group, it needs to be determined based on the time-to-live configured for the bearer corresponding to the first logical channel group,
  • the length of the first timer can be 1/n of the survival time
  • n represents the number of TCP retransmissions
  • the maximum number of retransmissions for the data packet to be retransmitted at the length of the first timer can be the first timer
  • the ratio of the length of the receiver to the HARQ RTT delay is the ratio of the length of the receiver to the HARQ RTT delay.
  • the network side device may configure the first timer or the first counter for a group of logical channels of the terminal in advance, and configure the duration of the first timer based on the lifetime of the bearer corresponding to the group of logical channels Or the maximum count value of the first counter.
  • Send the configuration information to the terminal through the RRC reconfiguration message and after receiving the message, the terminal obtains the first timer or the first counter configured by the network side device for its first logical channel group, and the duration of the first timer or The maximum count value of the first counter.
  • the first timer or the first counter is started.
  • the method 10 may further include: 130.
  • the terminal performs data transmission successfully, triggering the first device to shut down.
  • the situation that the terminal successfully performs data transmission includes at least one of the following: the terminal receives a feedback message sent by the network side device indicating that the data packet transmission is successful; the terminal receives a message sent by the network side device for the first logical channel group The new transmission scheduling information; the configuration authorization CGT timer configured by the terminal expires.
  • the terminal receives a feedback message sent by the network side device indicating that the data packet transmission is successful, or the network side device sends a feedback message for the first
  • the new transmission scheduling information of a logical channel group, or the configuration authorization CGT timer configured by the network side device for the terminal expires, indicating that the data packet is successfully transmitted, the reliability of the channel has been restored, and subsequent data packets can be transmitted. Stop the timing of the first timer/count of the first counter and set it to an initialization state, for example, set the first timer to 0, or reset the timing of the first timer/count of the first counter to zero.
  • the situation that the uplink data transmission fails includes at least one of the following: when the terminal is ready to perform uplink UL data transmission, the data packet is de-prioritized; when the terminal is ready to perform the UL data transmission , a listen-before-talk LBT failure occurs; during the process of the terminal performing the UL data transmission, the data packet transmission is interrupted; after the UL data transmission, it receives the retransmission scheduling information for the data packet sent by the network side device ; After the UL data is transmitted, a feedback message sent by the network side device indicating the failure of data packet transmission is received; the configuration authorization retransmission timer CGRT of the terminal expires.
  • the terminal if the terminal is ready to perform uplink data transmission in the first logical channel group, the priority of the data packet is lowered, or a listen-before-talk LBT failure occurs; or, the terminal performs uplink data transmission.
  • the transmission of the data packet is interrupted; or, after the uplink data transmission, when the terminal finds that the data packet needs to be retransmitted, for example: when the following conditions occur, it is determined that the data packet needs to be retransmitted, and the data packet sent by the network side device is received.
  • the retransmission scheduling information or the feedback message indicating the failure of data packet transmission, or the configuration authorization retransmission timer CGRT configured by the network side device for the terminal expires, when the terminal has one or more of the above conditions, the terminal can start The first timer or the first counter performs a timing operation.
  • LBT Listen Before Talk
  • the function of the timer CGRT is that when the terminal sends data, the CGRT is turned on, and when the CGRT times out, the terminal performs data retransmission.
  • performing a data transmission operation includes at least one of the following: retransmitting the first data packet with a preset number of repetitions, where the preset number of repetitions is greater than or equal to 2; The first data packet is retransmitted on the resource, and the MCS value of the first modulation and coding scheme is lower than the MCS value of the original modulation and coding scheme for transmitting the first data packet; the first data packet is transmitted in a copy mode, wherein the The replication mode includes an aggregate carrier CA replication mode or a dual-connection DC replication mode; the first data packet is transmitted on the second logical channel, wherein the priority of the second logical channel is higher than the priority of the first logical channel, and the priority of the second logical channel is higher than that of the first logical channel. Both the first logical channel and the second logical channel are logical channels in the first logical channel group.
  • the priority of the first logical channel can be increased, that is, the priority of the first logical channel group is selected higher than that of the first logical channel.
  • Level 2 logical channel to ensure successful data transfer. That is to say, the first logical channel is a logical channel used for initial transmission of a data packet that fails to transmit, and a second logical channel with a higher priority than the first logical channel is used when the data packet is retransmitted.
  • the number of repetitions during the retransmission of the data packet can be increased, or the MSC value of the data packet transmission can be reduced, or the transmission in a duplication manner can be used.
  • CA/DC transmission data packets, or by increasing the priority of the first logical channel, to increase the probability of successful data packet transmission, so as to restore the reliability of service transmission as soon as possible.
  • the number of repetitions (eg, the number of repetitions), the MSC value, etc. may be configured by the network side device.
  • the network-side device may transmit the configuration information to the terminal in advance, and when the terminal satisfies the first condition, the first timer or the first counter is started; When the count of a counter reaches a predetermined count value, use the configuration to perform data transmission; or, when the network-side device learns that the count of the first timer of the terminal exceeds a predetermined time period, or the count of the first counter reaches a predetermined count value, it sends a message to the terminal.
  • the configuration is issued so that the terminal can use the configuration to perform data transmission.
  • the first data packet when the first data packet is retransmitted with a preset number of repetitions, the first data packet may be the count of the first timer exceeding a predetermined time period, or the count of the first counter After reaching the predetermined count value, the first data to be sent by the terminal on the first logical channel.
  • the first data packet can be retransmitted on the first logical channel, and the number of times of transmission of the data packet during the retransmission process is at least 2 times, that is, the transmission is repeated at least 2 times at different times, so as to speed up the recovery of the data packet. Reliability of upstream services.
  • the data transmission operation is to retransmit the first data packet with a preset number of repetitions, it includes: for different times of transmission, using different hybrid automatic retransmission request HARQ processes to transmit the first data packet, wherein different HARQ processes are configured There is corresponding redundant version information.
  • the HARQ process used in the first retransmission of the first data packet is different from the HARQ process used in the second retransmission of the first data packet, and the first retransmission of the first
  • the redundancy version information of the data packet is different from the redundancy version information of the second retransmission of the first data packet.
  • the content of each transmission is not necessarily the same, and corresponding redundancy version information is configured for different HARQ processes, which is convenient for network side equipment to perform HARQ combining.
  • the data packet may be transmitted in a replicated manner (eg, CA/DC transmission), that is to say, the data packet is transmitted to at least two nodes at the same time, so as to improve the probability of successful transmission of the data packet.
  • a replicated manner eg, CA/DC transmission
  • the first data packet that performs the data transmission operation includes any one of the following data packets: a de-prioritized data packet; a data packet interrupted in transmission; a data packet not transmitted due to an LBT failure; the network The side device feeds back the data packet that failed to transmit; after the CGRT times out, the network side device does not receive the data packet that the transmission succeeded in feeding back; the newly transmitted data packet.
  • the newly transmitted data packet may be acquired from the multiplexing entity cache, or may be acquired from the MSG3 (message 3) cache.
  • the data packet performing data transmission may be a data packet with a reduced priority, or a data packet whose transmission is interrupted, or a data packet that is not transmitted due to an LBT failure, or a data packet whose transmission fails as reported by the network side device, or , after the CGRT times out, the network side device does not receive the feedback of the successful transmission of the data packet.
  • MCS originally used a higher modulation and coding method, such as 16QAM, and the coding efficiency was high.
  • a lower-order MCS can be used, that is, a lower modulation and coding method, such as QPSK , the first data is retransmitted on the configured resources, thereby restoring the transmission reliability of the uplink service.
  • the original time-frequency domain resources will not be able to carry the size of the above data, so the network side will reconfigure the size of the retransmission resources while configuring the MCS.
  • the method 10 may further include: 140.
  • the first data packet is transmitted When successful, the subsequent uplink data packets are transmitted on the configured transmission resources in the first modulation and coding manner.
  • the subsequent data packets can be continuously transmitted on the corresponding resources by using the reduced MSC.
  • the method 10 further includes: 150, reporting indication information to the network side device, where the indication information is used to indicate that the first logical channel is unreliable.
  • the method 10 further includes: 160, starting the second device for timing.
  • Then 150 may specifically include: when the timing of the second device satisfies the condition, reporting the indication information to the network side device.
  • the terminal may also report indication information to the network side device to indicate that the first logical channel is not The reliability is satisfied, wherein the indication information may carry information that the second timer has expired, or that the second counter has reached the maximum count value.
  • the embodiment of the present application also provides a data transmission method 20.
  • the method is performed by a network side device, and the method may include: 210. Determine the configuration parameters of the first device; 220. Be the first device of the terminal. A logical channel group configures the first device so that when the terminal fails to perform data transmission, the first device for timing is activated, wherein the first logical channel group includes two or more logical channels.
  • the configuration parameters of the first device may be configured to the terminal through an RRC reconfiguration message, for example, configuring a predetermined duration of the first timer or a predetermined count value of the first counter.
  • step 210 may include: 211. Configure a time-to-live for a bearer corresponding to the first logical channel group; 212. Determine a configuration parameter of the first device according to the time-to-live.
  • the network-side device may configure a time-to-live for the bearer corresponding to the first logical channel group of the terminal, and determine the duration of configuring the first timer for the first logical channel group based on the time-to-live, or , and configure the maximum count value of the first counter for the first logical channel group.
  • the method 20 may further include: 240: Receive indication information reported by the terminal, where the indication information is used to indicate that the first logical channel is unreliable.
  • the network-side device may receive the indication information reported by the terminal that carries the information that the second timer has expired or that the second counter has reached the maximum count value, thereby learning the first logical channel group Reliability is not satisfied.
  • the length of the second timer is greater than the length of the first timer, and the maximum count value of the second counter is greater than the maximum count value of the first counter.
  • FIG. 3 it is a data/signaling interaction process diagram of a data transmission method 30 provided in an embodiment of the present application.
  • the data transmission method 30 includes the following steps:
  • the network side device configures the first logical channel group of the terminal UE with the length of the first timer as a predetermined duration, or configures the maximum count value of the first counter to a predetermined count value.
  • the network side device may configure the length of the first timer or the maximum count value of the first counter to the UE through an RRC reconfiguration message.
  • the length of the first timer or the maximum count value of the first counter is determined by the time-to-live configured by the network side device for the bearer corresponding to the first logical channel group.
  • the terminal starts the first timer or the first counter when at least one of the following first conditions is satisfied.
  • the first condition is: when the terminal is ready to perform uplink UL data transmission, the data packet is de-prioritized; when the terminal is ready to perform the UL data transmission, a listen-before-talk LBT failure occurs; the terminal performs the UL data transmission In the process of data transmission, the transmission of the data packet is interrupted; after the UL data transmission, the retransmission scheduling information for the data packet sent by the network side device is received; after the UL data transmission, the data packet sent by the network side device is received.
  • the feedback message indicating the failure of data packet transmission; the configuration of the terminal authorizes the retransmission timer CGRT to time out.
  • the terminal may start the first timer or the first counter to perform a timing operation.
  • the terminal When the first timer times out or the count value of the first counter reaches the maximum count value, the terminal performs one or more of the following operations for data transmission: increasing the number of repetitions, such as the number of repetitions, the number of repetitions being transmitted by: Configure in advance on the network side; reduce MCS, and adjust the time domain/frequency domain extension resources, which and MCS are configured in advance on the network side; automatically activate repeated transmission, such as CA/DC transmission; automatically increase the priority of the logical channel.
  • the terminal when the first timer times out or the count value of the first counter reaches the maximum count value, the terminal retransmits the first data packet with a repetition number greater than or equal to 2, or The reduced MCS value retransmits the first data packet on the configured transmission resources.
  • the terminal may use the CA/DC duplication mode to perform UL data transmission.
  • the CA/DC duplication transmission architecture is configured in advance by the network side.
  • the UE performs duplication transmission on the data to be sent in the PDCP layer, and delivers the repeatedly transmitted packets to two carriers (CA duplication) or two nodes (DC duplication) , for example: two base stations.
  • the terminal when the first timer times out or the count value of the first counter reaches the maximum count value, the terminal can increase the priority of the first logical channel, for example, it can select from the first logical channel group
  • the second logical channel has a higher priority than the first logical channel, and when the next data is generated, the data of the first logical channel is preferentially multiplexed.
  • the terminal when sending data, if the uplink grant conflicts, the second logical channel data with higher priority is sent preferentially.
  • the first data packet that performs data transmission may include any one of the following data packets: a data packet whose priority is reduced; a data packet whose transmission is interrupted; a data packet that is not transmitted due to LBT failure; data packet; after the CGRT times out, the data packet that the network side device feedbacks successfully transmitted has not been received; the newly transmitted data packet.
  • the second condition includes: receiving a feedback message sent by the network-side device indicating successful data transmission; receiving new transmission scheduling information for the first logical channel group sent by the network-side device; configuration authorization of the terminal The CGT timer expired.
  • the terminal reports indication information indicating that the second timer times out or the count value of the second counter reaches the maximum count value to the network side device.
  • the network side device receives the indication information reported by the terminal.
  • the first timer or the first counter related to the survival time is set for the uplink service logical channel of the terminal, and when the uplink data transmission fails, the first timer or the first counter is started, and when the first When the timer expires or the first counter reaches the maximum count value, a data transmission operation is performed to improve and restore the reliability of uplink service transmission, so as to meet the requirements of service transmission quality of service (QoS) performance.
  • QoS quality of service
  • the terminal device includes: a memory 401 , a transceiver 402 and a processor 403 .
  • the memory 401 is used to store computer programs.
  • the transceiver 402 is used to send and receive data under the control of the processor 403 .
  • the processor 403 is configured to read the computer program in the memory 401 and perform the following operations: when the uplink data transmission fails, start the first device for timing; when the timing of the first device meets the conditions, execute the data transfer operation.
  • the first device includes: a first timer or a first counter.
  • the condition that the timing of the first device satisfies includes: the timing of the first timer exceeds a predetermined time period; or, the count of the first counter reaches a predetermined count value.
  • the processor is further configured to trigger the first device to shut down when the terminal successfully performs data transmission.
  • the situation in which the terminal successfully performs data transmission includes at least one of the following: the terminal receives a feedback message sent by the network-side device indicating that the data packet transmission is successful; the terminal receives The new transmission scheduling information for the first logical channel group sent by the network side device; the configuration of the terminal authorizes the CGT timer to expire.
  • the predetermined duration or the predetermined count value is determined by a time-to-live corresponding to the first logical channel group, and the time-to-live is determined by the network-side device for the time corresponding to the first logical channel
  • the bearer configuration is obtained.
  • the situation that the uplink data transmission fails includes at least one of the following: when the terminal is ready to perform uplink UL data transmission, the data packet is de-prioritized; when the terminal is ready to perform the UL data transmission , a listen-before-talk LBT failure occurs; during the process of the terminal performing the UL data transmission, the data packet transmission is interrupted; after the UL data transmission, it receives the retransmission scheduling information for the data packet sent by the network side device ; After the UL data is transmitted, a feedback message sent by the network side device indicating the failure of data packet transmission is received; the configuration authorization retransmission timer CGRT of the terminal expires.
  • performing a data transmission operation includes at least one of the following: retransmitting the first data packet with a preset number of repetitions, where the preset number of repetitions is greater than or equal to 2; The first data packet is retransmitted on the resource, and the MCS value of the first modulation and coding scheme is lower than the MCS value of the original modulation and coding scheme for transmitting the first data packet; the first data packet is transmitted in a copy mode, wherein the The replication mode includes: aggregate carrier CA replication mode or dual-connection DC replication mode; the first data packet is transmitted on the second logical channel, wherein the priority of the second logical channel is higher than the priority of the first logical channel, so Both the first logical channel and the second logical channel are logical channels in the first logical channel group.
  • the first data packet for performing the data transmission operation includes any one of the following data packets: a data packet whose priority is reduced; a data packet whose transmission is interrupted; a data packet that is not transmitted due to LBT failure; The network-side device feeds back the data packets that failed to transmit; after the CGRT times out, the network-side device does not receive the data packets that are successfully transmitted; the newly transmitted data packets.
  • the transceiver 402 is further configured to: when the first data packet is transmitted When successful, the subsequent uplink data packets are transmitted on the configured transmission resources in the first modulation and coding manner.
  • the transceiver 402 is specifically configured to report indication information to the network side device, where the indication information is used to indicate that the first logical channel is unreliable.
  • the processor 403 is further configured to start the second device for timing.
  • the transceiver 402 is specifically configured to report the indication information to the network side device when the timing of the second device satisfies the condition.
  • the bus architecture in FIG. 4 may include any number of interconnected buses and bridges, specifically various circuit links of one or more processors represented by processor 403 and memory represented by memory 401 together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 402 may be a number of elements, including a transmitter and a receiver, that provide means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the user interface 404 may also be an interface capable of externally connecting a required device, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 403 is responsible for managing the bus architecture and general processing, and the memory 402 may store data used by the processor 403 in performing operations.
  • the processor 403 may be a CPU (central processor), an ASIC (Application Specific Integrated Circuit, an application-specific integrated circuit), an FPGA (Field-Programmable Gate Array, a field programmable gate array) or a CPLD (Complex Programmable Logic Device) , complex programmable logic devices), the processor can also use a multi-core architecture.
  • CPU central processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • complex programmable logic devices complex programmable logic devices
  • the processor is configured to execute any one of the methods provided in the embodiments of the present application according to the obtained executable instructions by invoking the computer program stored in the memory.
  • the processor and memory may also be physically separated.
  • an embodiment of the present application further provides a network side device 50 .
  • the network side device 50 includes: a memory 501 , a transceiver 502 and a processor 503 .
  • the memory 501 is used to store computer programs.
  • the transceiver 502 is used for transmitting and receiving data under the control of the processor 503 .
  • the processor 503 is configured to read the computer program in the memory 501 and perform the following operations: determine the configuration parameters of the first device; configure the first device for the first logical channel group of the terminal, so that the terminal performs data transmission On failure, the first device for timing is activated, wherein the first logical channel group includes two or more logical channels.
  • the processor 503 is further configured to configure a time-to-live for a bearer corresponding to the first logical channel group; and determine a configuration parameter of the first device according to the time-to-live.
  • the processor 503 is specifically configured to configure the configuration parameters of the first device to the terminal through an RRC reconfiguration message.
  • the transceiver 502 is configured to receive indication information reported by the terminal, where the indication information is used to indicate that the first logical channel is unreliable.
  • the bus architecture in FIG. 5 may include any number of interconnected buses and bridges, specifically various circuit links of one or more processors represented by processor 503 and memory represented by memory 501 together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 502 may be multiple elements, ie, including transmitters and receivers, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 503 is responsible for managing the bus architecture and general processing, and the memory 501 may store data used by the processor 503 in performing operations.
  • the processor 503 may be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device). , CPLD), the processor can also use a multi-core architecture.
  • CPU central processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • FPGA field programmable gate array
  • CPLD Complex Programmable Logic Device
  • an embodiment of the present application further provides a terminal device.
  • the terminal device 60 may include: an execution unit 610 .
  • the execution unit 610 is configured to start a first device for timing when the uplink data transmission fails; and when the timing of the first device satisfies a condition, execute a data transmission operation.
  • the first device includes: a first timer or a first counter.
  • the condition that the timing of the first device satisfies the condition includes: the timing of the first timer exceeds a predetermined time period; or, the count of the first counter reaches a predetermined count value.
  • the executing unit 610 is further configured to trigger the first device to shut down when the terminal executes data transmission successfully.
  • the situation that the terminal successfully performs data transmission includes at least one of the following: the terminal receives a feedback message sent by the network side device indicating that the data packet transmission is successful; the terminal receives a message sent by the network side device for the first New transmission scheduling information of a logical channel group; the configuration of the terminal authorizes the CGT timer to expire.
  • the predetermined duration or the predetermined count value is determined by a time-to-live corresponding to the first logical channel group, and the time-to-live is determined by the network-side device for the time corresponding to the first logical channel
  • the bearer configuration is obtained.
  • the situation that the uplink data transmission fails includes at least one of the following: when the terminal is ready to perform uplink UL data transmission, the data packet is de-prioritized; when the terminal is ready to perform the UL data transmission , a listen-before-talk LBT failure occurs; during the process of the terminal performing the UL data transmission, the data packet transmission is interrupted; after the UL data transmission, it receives the retransmission scheduling information for the data packet sent by the network side device ; After the UL data is transmitted, a feedback message sent by the network side device indicating the failure of data packet transmission is received; the configuration authorization retransmission timer CGRT of the terminal expires.
  • performing a data transmission operation includes at least one of the following: retransmitting the first data packet with a preset number of repetitions, where the preset number of repetitions is greater than or equal to 2; The first data packet is retransmitted on the resource, and the MCS value of the first modulation and coding scheme is lower than the MCS value of the original modulation and coding scheme for transmitting the first data packet; the first data packet is transmitted in a copy mode, wherein the The replication mode includes: aggregate carrier CA replication mode or dual-connection DC replication mode; the first data packet is transmitted on the second logical channel, wherein the priority of the second logical channel is higher than the priority of the first logical channel, so Both the first logical channel and the second logical channel are logical channels in the first logical channel group.
  • the first data includes any one of the following.
  • the first data packet includes any one of the following data packets: a data packet whose priority is reduced; a data packet whose transmission is interrupted; The transmitted data packet; the network-side device feeds back the failed transmission data packet; after the CGRT times out, the network-side device does not receive the transmitted successful data packet; the newly transmitted data packet.
  • the terminal device 60 further includes: a transmission unit 620 .
  • the transmitting unit 620 is configured to transmit subsequent uplink data packets on the configured transmission resources in the first modulation and coding manner when the first data packet is successfully transmitted.
  • the transmission unit 620 is further configured to report indication information to the network side device, where the indication information is used to indicate that the first logical channel is unreliable.
  • the execution unit 610 is further configured to start the second device for timing.
  • the transmission unit 620 is specifically configured to report the indication information to the network side device when the timing of the second device satisfies the condition.
  • an embodiment of the present application further provides a network side device.
  • the terminal device 70 may include: a determination unit 710 and a configuration unit 720 .
  • the determining unit 710 is configured to determine the configuration parameters of the first device.
  • the configuration unit 720 is configured to configure the first device for the first logical channel group of the terminal, so that when the terminal fails to perform data transmission, start the first device for timing, wherein the first logical channel group Include two or more logical channels.
  • the determining unit 710 is further configured to configure a time-to-live for a bearer corresponding to the first logical channel group; and determine a configuration parameter of the first device according to the time-to-live.
  • the configuration unit 720 is specifically configured to configure the configuration parameters of the first device to the terminal through an RRC reconfiguration message.
  • a receiving unit 730 is further included, configured to receive indication information reported by the terminal, where the indication information is used to indicate that the first logical channel is unreliable.
  • an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when it runs on a computer, the computer can execute the foregoing data transmission method 10, or, data Corresponding content in the embodiment corresponding to the transmission method 20 .
  • the data transmission method provided by the embodiment of the present application provides an effective solution implemented by terminal equipment for the situation that the service reliability is reduced due to the survival time timeout and cannot meet the reliability requirements of service transmission.
  • the terminal finds that the uplink data transmission fails it starts the first device used for timing, and when the timing of the first device meets the conditions, executes the data transmission operation, so as to improve the reliability of service transmission and meet the requirements of service transmission. Quality of Service QoS performance requirements.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium.
  • the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means comprising the instructions product, the instruction means implements the functions specified in the flow or flow of the flowchart and/or the block or blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process that Execution of the instructions provides steps for implementing the functions specified in the flowchart or blocks and/or the block or blocks of the block diagrams.

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

Abstract

Des modes de réalisation de la présente demande se rapportent au domaine technique des communications, et concernent un procédé de transmission de données, un équipement terminal, un dispositif côté réseau et un support d'enregistrement lisible par ordinateur. Le procédé est exécuté par un terminal, et comprend les étapes consistant à : démarrer un premier dispositif pour une synchronisation lorsque la transmission de données de liaison montante échoue (110) ; et exécuter une opération de transmission de données lorsque la synchronisation du premier dispositif satisfait une condition (120).
PCT/CN2022/070582 2021-01-18 2022-01-06 Procédé de transmission de données, équipement terminal, dispositif côté réseau et support d'enregistrement lisible par ordinateur WO2022152044A1 (fr)

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