WO2024087919A1 - 信息传输的方法和装置 - Google Patents

信息传输的方法和装置 Download PDF

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Publication number
WO2024087919A1
WO2024087919A1 PCT/CN2023/118303 CN2023118303W WO2024087919A1 WO 2024087919 A1 WO2024087919 A1 WO 2024087919A1 CN 2023118303 W CN2023118303 W CN 2023118303W WO 2024087919 A1 WO2024087919 A1 WO 2024087919A1
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WIPO (PCT)
Prior art keywords
terminal
carrier group
information
threshold value
carrier
Prior art date
Application number
PCT/CN2023/118303
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English (en)
French (fr)
Inventor
吴昊
彭文杰
Original Assignee
华为技术有限公司
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Publication of WO2024087919A1 publication Critical patent/WO2024087919A1/zh

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Classifications

    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/23—Manipulation of direct-mode connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Definitions

  • the present application relates to the field of communications, and more specifically, to a method and device for information transmission.
  • data communication can be performed between terminals through network equipment, or directly between terminals without the help of network equipment.
  • the interface between terminals is called the PC5 interface, which is similar to the Uu interface between terminals and base stations.
  • the link between terminals is called the sidelink (SL). Terminals can directly transmit data through the sidelink without going through network equipment, which can effectively reduce communication delay.
  • the sidelink supports unicast, multicast, and broadcast communications.
  • unicast communication only two terminals that have established a unicast connection can communicate with each other.
  • Both unicast and multicast communications on the sidelink support hybrid automatic repeat request (HARQ) feedback.
  • HARQ hybrid automatic repeat request
  • the terminal is configured with a maximum continuous discontinuous transmission (DTX) configuration parameter (sl-maxNumConsecutiveDTX) to determine the SL RLF based on HARQ feedback.
  • DTX maximum continuous discontinuous transmission
  • the terminal maintains a counter for each unicast connection to record the number of consecutive DTXs.
  • the SL RLF of the unicast connection will be triggered.
  • SL carriers can be divided into low-frequency carriers and high-frequency carriers.
  • the terminal records a continuous DTX count for each unicast connection and cannot distinguish the communication link status of the low-frequency carrier and the high-frequency carrier.
  • SL carriers can also be divided into authorized carriers and unauthorized carriers.
  • the terminal records a continuous DTX count for each unicast connection and cannot distinguish the communication link status of the authorized carrier and the unauthorized carrier.
  • SL carriers can also be divided into primary carriers and secondary carriers. The terminal records a continuous DTX count for each unicast connection and cannot distinguish the communication link status of the primary carrier and the secondary carrier.
  • the present application provides a method and device for information transmission, which can improve the reliability of information transmission in a side link.
  • a method for information transmission is provided, which can be executed by a chip or chip system on the terminal side.
  • the method is used for a first terminal to perform unicast communication with a second terminal through a sidelink, and the method includes: the first terminal receives configuration information from a network device, the configuration information includes a first continuous discontinuous transmission DTX threshold value and a second continuous DTX threshold value, the first continuous DTX threshold value is associated with a first carrier group, and the second continuous DTX threshold value is associated with a second carrier group; the first terminal uses the carrier in the first carrier group to send the first information to the second terminal; the first terminal uses the carrier in the second carrier group to send the second information to the second terminal; if the first terminal fails to detect the first hybrid automatic repeat request HARQ feedback message corresponding to the first information for a number greater than or equal to the first continuous DTX threshold value, then stop using the first carrier group to transmit information; and/or, if the first terminal fails to detect the second HARQ feedback message corresponding to
  • the first terminal records the number of times the first HARQ feedback message is continuously not detected in the process of sending the first information to the second terminal using the carrier in the first carrier group, and records the number of times the second HARQ feedback message is continuously not detected in the process of sending the second information to the second terminal using the carrier in the second carrier group. If the number of times the first terminal has not continuously detected the first HARQ feedback message corresponding to the first information is greater than or equal to the first continuous DTX threshold value, and the number of times the first terminal has not continuously detected the second HARQ feedback message corresponding to the second information is less than the second continuous DTX threshold value, then the first carrier group is stopped from transmitting information, and the second carrier group can continue to be used to transmit information.
  • the second carrier group is stopped from transmitting information, and the first carrier group can continue to be used to transmit information.
  • the technical solution of the embodiment of the present application can improve the reliability of information transmission on the side link.
  • the method also includes: if the first terminal has not continuously detected the first HARQ feedback message corresponding to the first information for a number of times greater than or equal to the first continuous DTX threshold value, and the first terminal has not continuously detected the second HARQ feedback message corresponding to the second information for a number of times greater than or equal to the second continuous DTX threshold value, the first terminal releases the unicast connection between the first terminal and the second terminal.
  • the first carrier group includes a low-frequency carrier, and the second carrier group includes a high-frequency carrier; or, the first carrier group includes an authorized spectrum carrier, and the second carrier group includes an unlicensed spectrum carrier.
  • the second continuous DTX threshold value is greater than the first continuous DTX threshold value.
  • the communication distance of the high-frequency carrier is shorter and the probability of failure in transmitting information using the high-frequency carrier is greater. Therefore, the second continuous DTX threshold value is greater than the first continuous DTX threshold value, which can improve the reliability of information transmission using the high-frequency carrier.
  • the second continuous DTX threshold value is greater than the first continuous DTX threshold value, which can improve the reliability of information transmission using unlicensed spectrum carriers.
  • the first carrier group includes a primary carrier
  • the second carrier group includes a secondary carrier
  • the first terminal if the first terminal fails to detect the first HARQ feedback message corresponding to the first information continuously for a number of times greater than or equal to the first continuous DTX threshold value, the first terminal stops using the first carrier group to transmit information, including: if the first terminal fails to detect the first HARQ feedback message corresponding to the first information continuously for a number of times greater than or equal to the first continuous DTX threshold value, the first terminal stops using the first carrier group and the second carrier group to transmit information.
  • the PSSCH resources for sending data using the auxiliary carrier need to be scheduled by the main carrier. If the main carrier group is stopped from being used to transmit information, the auxiliary carrier cannot be used to transmit information.
  • the method also includes: if the first terminal has not continuously detected the first HARQ feedback message corresponding to the first information for a number of times greater than or equal to the first continuous DTX threshold value, the first terminal releases the unicast connection between the first terminal and the second terminal.
  • the method further includes: if the number of times that the first terminal has not continuously detected the first HARQ feedback message corresponding to the first information is greater than or equal to the first continuous DTX threshold value, sending first indication information to the network device, the first indication information being used to indicate that the first carrier group is invalid.
  • sending second indication information to the second terminal if the number of times that the first terminal has not continuously detected the first HARQ feedback message corresponding to the first information is greater than or equal to the first continuous DTX threshold value, sending second indication information to the second terminal, the second indication information being used to indicate that the first carrier group is invalid.
  • the method further includes: if the number of times that the first terminal has not continuously detected the second HARQ feedback message corresponding to the second information is greater than or equal to the second continuous DTX threshold value, sending first indication information to the network device, the first indication information being used to indicate that the second carrier group is invalid.
  • sending second indication information to the second terminal if the number of times that the first terminal has not continuously detected the second HARQ feedback message corresponding to the second information is greater than or equal to the second continuous DTX threshold value, sending second indication information to the second terminal, the second indication information being used to indicate that the second carrier group is invalid.
  • the method further includes: if the number of times that the first terminal has not continuously detected the first HARQ feedback message corresponding to the first information is greater than or equal to the first continuous DTX threshold value, and the number of times that the first terminal has not continuously detected the second HARQ feedback message corresponding to the second information is greater than or equal to the second continuous DTX threshold value, then sending first indication information to the network device, and the first indication information is used to indicate that the first carrier group and the second carrier group are invalid.
  • the number of times that the first terminal has not continuously detected the first HARQ feedback message corresponding to the first information is greater than or equal to the first continuous DTX threshold value, and the number of times that the first terminal has not continuously detected the second HARQ feedback message corresponding to the second information is greater than or equal to the second continuous DTX threshold value, then sending second indication information to the second terminal, and the second indication information is used to indicate that the first carrier group and the second carrier group are invalid.
  • the configuration information further includes a third continuous DTX threshold value and a fourth Continuous DTX threshold value, the third continuous DTX threshold value is associated with the third carrier group, and the fourth continuous DTX threshold value is associated with the fourth carrier group; the method also includes: the first terminal uses the carrier in the third carrier group to send third information to the second terminal; the first terminal uses the carrier in the fourth carrier group to send fourth information to the second terminal; if the first terminal fails to detect the third HARQ feedback message corresponding to the third information continuously for a number greater than or equal to the third continuous DTX threshold value, the first terminal stops using the third carrier group to transmit information; and/or, if the first terminal fails to detect the fourth HARQ feedback message corresponding to the fourth information continuously for a number greater than or equal to the fourth continuous DTX threshold value, the first terminal stops using the fourth carrier group to transmit information.
  • the first terminal records the number of first HARQ feedback messages that are continuously not detected in the process of sending the first information to the second terminal using the carrier in the first carrier group, records the number of second HARQ feedback messages that are continuously not detected in the process of sending the second information to the second terminal using the carrier in the second carrier group, records the number of third HARQ feedback messages that are continuously not detected in the process of sending the third information to the second terminal using the carrier in the third carrier group, and records the number of fourth HARQ feedback messages that are continuously not detected in the process of sending the fourth information to the second terminal using the carrier in the fourth carrier group.
  • the first carrier group is stopped from transmitting information. If the number of times that the first terminal fails to detect the second HARQ feedback message corresponding to the second information is greater than or equal to the second continuous DTX threshold value, the second carrier group is stopped from transmitting information. If the number of times that the first terminal fails to detect the third HARQ feedback message corresponding to the third information is greater than or equal to the third continuous DTX threshold value, the third carrier group is stopped from transmitting information.
  • the fourth carrier group is stopped from transmitting information.
  • the technical solution of the embodiment of the present application can improve the reliability of information transmission on the side link.
  • the method also includes: if the first terminal fails to detect the first HARQ feedback message corresponding to the first information continuously for a number of times greater than or equal to the first continuous DTX threshold value, the first terminal fails to detect the second HARQ feedback message corresponding to the second information continuously for a number of times greater than or equal to the second continuous DTX threshold value, the first terminal fails to detect the third HARQ feedback message corresponding to the third information continuously for a number of times greater than or equal to the third continuous DTX threshold value, and the first terminal fails to detect the fourth HARQ feedback message corresponding to the fourth information continuously for a number of times greater than or equal to the fourth continuous DTX threshold value, then the first terminal releases the unicast connection between the first terminal and the second terminal.
  • the first carrier group and the second carrier group include licensed spectrum carriers
  • the third carrier group and the fourth carrier group include unlicensed spectrum carriers
  • the first carrier group and the third carrier group include low-frequency carriers
  • the second carrier group and the fourth carrier group include high-frequency carriers.
  • a communication device which can be applied to the first terminal described in the first aspect, and the device performs unicast communication with the second terminal through a side link
  • the device includes: a transceiver unit, used to receive configuration information from a network device, the configuration information including a first continuous discontinuous transmission DTX threshold value and a second continuous DTX threshold value, the first continuous DTX threshold value is associated with a first carrier group, and the second continuous DTX threshold value is associated with a second carrier group; the transceiver unit is also used to use the carrier in the first carrier group to send first information to the second terminal; the transceiver unit is also used to use the carrier in the second carrier group to send second information to the second terminal; a processing unit is used to stop using the first carrier group to transmit information if the device fails to detect the number of first hybrid automatic repeat request HARQ feedback messages corresponding to the first information is greater than or equal to the first continuous DTX threshold value; and/or, if the device fails to detect the
  • the processing unit is also used to release the unicast connection between the device and the second terminal if the number of times the device has not continuously detected the first HARQ feedback message corresponding to the first information is greater than or equal to the first continuous DTX threshold value, and the number of times the device has not continuously detected the second HARQ feedback message corresponding to the second information is greater than or equal to the second continuous DTX threshold value.
  • the first carrier group includes a low-frequency carrier, and the second carrier group includes a high-frequency carrier; or, the first carrier group includes an authorized spectrum carrier, and the second carrier group includes an unlicensed spectrum carrier.
  • the second continuous DTX threshold value is greater than the first continuous DTX threshold value.
  • the first carrier group includes a primary carrier
  • the second carrier group includes a secondary carrier
  • the processing unit is specifically used to stop using the first carrier group and the second carrier group to transmit information if the device has not continuously detected the first HARQ feedback message corresponding to the first information for a number of times greater than or equal to the first continuous DTX threshold value.
  • the processing unit is also used to release the unicast connection between the device and the second terminal if the number of times the device has not continuously detected the first HARQ feedback message corresponding to the first information is greater than or equal to the first continuous DTX threshold value.
  • the configuration information also includes a third continuous DTX threshold value and a fourth continuous DTX threshold value, the third continuous DTX threshold value is associated with the third carrier group, and the fourth continuous DTX threshold value is associated with the fourth carrier group;
  • the transceiver unit is also used to use the carrier in the third carrier group to send third information to the second terminal;
  • the transceiver unit is also used to use the carrier in the fourth carrier group to send fourth information to the second terminal;
  • the processing unit is also used to stop using the third carrier group to transmit information if the number of times the third HARQ feedback message corresponding to the third information is not detected continuously is greater than or equal to the third continuous DTX threshold value; and/or, if the number of times the fourth HARQ feedback message corresponding to the fourth information is not detected continuously is greater than or equal to the fourth continuous DTX threshold value, stop using the fourth carrier group to transmit information.
  • the processing unit is also used to release the unicast connection between the device and the second terminal if the number of times the device has not continuously detected the first HARQ feedback message corresponding to the first information is greater than or equal to the first continuous DTX threshold value, the number of times the device has not continuously detected the second HARQ feedback message corresponding to the second information is greater than or equal to the second continuous DTX threshold value, the number of times the device has not continuously detected the third HARQ feedback message corresponding to the third information is greater than or equal to the third continuous DTX threshold value, and the number of times the device has not continuously detected the fourth HARQ feedback message corresponding to the fourth information is greater than or equal to the fourth continuous DTX threshold value.
  • the first carrier group and the second carrier group include licensed spectrum carriers
  • the third carrier group and the fourth carrier group include unlicensed spectrum carriers
  • the first carrier group and the third carrier group include low-frequency carriers
  • the second carrier group and the fourth carrier group include high-frequency carriers.
  • a communication device comprising: a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the communication device performs the method in the first aspect or any possible implementation of the first aspect.
  • a communication system comprising: the first terminal, the second terminal and the network device in the method described in the first aspect.
  • a computer-readable storage medium stores a computer program; when the computer program is run on a computer, the computer executes the method in any possible implementation of the first aspect.
  • a computer program product comprising a computer program, wherein when the computer program is executed by a computer, a communication device implements a method in any possible implementation manner in the above-mentioned first aspect.
  • FIG. 1 is a schematic diagram of direct communication between terminals via a PC5 interface.
  • FIG. 2 is a schematic flow diagram of uplink transmission based on unlicensed spectrum.
  • FIG3 is a diagram showing the relationship between PSSCH and PSFCH in the time domain.
  • FIG4 is a schematic flow diagram of PSFCH transmission using SL unlicensed spectrum communication.
  • Figure 5 is the flow chart for triggering SL RLF.
  • FIG6 is a schematic diagram of a system architecture applicable to an embodiment of the present application.
  • FIG. 7 is a schematic flow chart of an information transmission method proposed in an embodiment of the present application.
  • FIG8 is a schematic flow chart of an example of an information transmission method according to an embodiment of the present application.
  • FIG. 9 is a schematic flow chart of an example of an information transmission method according to an embodiment of the present application.
  • FIG. 10 is a schematic flow chart of an example of an information transmission method according to an embodiment of the present application.
  • FIG. 11 is a schematic flow chart of an example of an information transmission method according to an embodiment of the present application.
  • FIG. 12 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG13 is a schematic block diagram of another communication device according to an embodiment of the present application.
  • the embodiments of the present application can be applied to various communication systems, such as sidelink communication, vehicle to everything (V2X) system, wireless local area network system (WLAN), narrowband Internet of things (NB-IoT), global system for mobile communications (GSM), enhanced data rate for GSM evolution (EDGE), wideband code division multiple access (WCDMA), etc.
  • the present invention relates to fifth-generation (5G) and sixth-generation (6G) systems, such as wireless (WCDMA), code division multiple access (CDMA2000), time division-synchronization code division multiple access (TD-SCDMA), long term evolution (LTE), satellite communications, fifth-generation (5G) systems, sixth-generation (6G) systems, communications on licensed spectrum, communications on unlicensed spectrum or new communications systems that will appear in the future.
  • the terminal device involved in the embodiments of the present application may be a device or chip or module that includes a wireless transceiver function and can provide communication services to users.
  • the terminal device may be a device in a vehicle to everything (V2X) system, a device to device (D2D) system, a device in a machine type communication (MTC) system, a device in a sidelink communication, etc. It may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem.
  • the terminal can be a mobile station (MS), a subscriber unit (subscriber unit), a user equipment (UE), a cellular phone (cellular phone), a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a smart phone, a wireless data card, a personal digital assistant (PDA) computer, a tablet computer, a wireless modem (modem), a handheld device (handset), a laptop computer, a machine type communication (MTC) terminal, a terminal device in a 5G network or a network after 5G or a terminal device in a future evolved public land mobile network (PLMN), a chip or device or module with extended reality (XR) and virtual reality (VR) functions, etc., which is not limited in this application.
  • MS mobile station
  • UE subscriber unit
  • UE user equipment
  • UE cellular phone
  • SIP session initiation protocol
  • WLL wireless local loop
  • smart phone a wireless data card
  • PDA personal digital assistant
  • the network devices involved in the embodiments of the present application mainly refer to base stations, also known as wireless access points, transceiver stations, relay stations, cells, transceiver points, evolved base stations, new generation base stations, road side site units (road site unit, RSU), etc., and the embodiments of the present application do not limit this.
  • base stations also known as wireless access points, transceiver stations, relay stations, cells, transceiver points, evolved base stations, new generation base stations, road side site units (road site unit, RSU), etc.
  • terminals can communicate data through network devices, or they can communicate directly without the help of network devices.
  • the interface between terminals is called the PC5 interface, which is similar to the Uu interface between terminals and base stations.
  • the link between terminals is called the sidelink, and a typical application scenario of SL communication is V2X.
  • V2X each vehicle is a terminal, and terminals can directly transmit data through the sidelink without going through network devices, which can effectively reduce communication latency.
  • Figure 1 is a schematic diagram of direct communication between terminals through the PC5 interface.
  • the sidelink supports unicast communication, multicast communication and broadcast communication.
  • the embodiment of the present application relates to unicast communication.
  • a unicast connection needs to be established between the two terminals first.
  • the two terminals can communicate data based on the negotiated identifier, and the data can be encrypted or unencrypted.
  • unicast communication can only be performed between two terminals that have established a unicast connection.
  • the sending terminal when sending data, the sending terminal sends a source identifier and a destination identifier to the receiving terminal, wherein the source identifier is assigned by the sending terminal itself, and the destination identifier is an identifier assigned by the receiving terminal for the unicast connection.
  • Both unicast and multicast communications on the sidelink support HARQ feedback, which is provided by the receiving terminal on the physical sidelink feedback channel (PSFCH).
  • the HARQ feedback method for unicast communication is that the sending terminal sends data to the receiving terminal. If the receiving terminal successfully decodes the data, it feeds back a positive acknowledgment (ACK) message to the sending terminal; if the receiving terminal does not successfully decode the data, it feeds back a negative acknowledgment (NACK) message to the sending terminal.
  • ACK positive acknowledgment
  • NACK negative acknowledgment
  • SCI includes first stage SCI and second stage SCI, where: The first-level SCI is carried on the physical sidelink control channel (PSCCH), and the second-level SCI is carried on the physical sidelink shared channel (PSSCH).
  • the first-level SCI will indicate the time-frequency domain resources of the PSSCH, and the second-level SCI will indicate whether the HARQ feedback support is "enabled” or "disabled”.
  • HARQ feedback support "enabled” can be understood as that the receiving terminal needs to send a feedback message to the sending terminal;
  • HARQ feedback support "disabled” can be understood as that the receiving terminal does not need to send a feedback message.
  • the second-level SCI indicates that HARQ feedback support is "enabled”.
  • the spectrum resources used by terminals are divided into licensed spectrum and unlicensed spectrum.
  • Licensed spectrum can only be used by certain organizations or operators; unlicensed spectrum is a shared spectrum that can be used by different operators/institutions.
  • terminals and network devices need to perform the LBT process before sending data.
  • the LBT process can be understood as the channel access process.
  • LBT is performed at the granularity of a channel, such as a channel with a bandwidth of 20 MHz.
  • a communication device Before a communication device sends a signal (data signal) on a first channel, it may first detect whether the first channel is idle, for example, whether it detects that a nearby communication device is occupying the first channel to send a signal. This detection process may be referred to as a clear channel assessment (CCA) process or a channel access process.
  • the channel access process includes a first type of channel access process and a second type of channel access process.
  • the communication device in the embodiment of the present application may be a terminal or a network device.
  • the first type of channel access process can be called a channel access process based on a fixed duration. For a certain bandwidth, the communication device performs energy detection of the received signal within a fixed duration. If the energy of the received signal is less than or equal to the first preset threshold, the channel is considered idle and the communication device can use the idle channel to transmit data; otherwise, the communication device considers the channel busy and does not use the busy channel to transmit data.
  • the second type of channel access process can be called a fallback-based channel access process.
  • a window is defined, which defines the range of the number of time slots for energy detection of the received signal.
  • the communication device randomly selects a value A from the range. After the communication device determines through energy detection that at least A time slots are idle, the channel is considered to be idle, so that the communication device can use the idle channel to transmit data; otherwise, the communication device considers that the channel is busy, and the communication device does not use the busy channel to transmit data. Specifically, if the energy of the signal received by the communication device within a fixed time length in each time slot of at least A time slots is less than or equal to the second preset threshold, the channel is considered to be idle.
  • the first preset threshold and the second preset threshold can be predefined, there is no restrictive relationship between the first preset threshold and the second preset threshold, and the first preset threshold and the second preset threshold can be the same or different.
  • the embodiment of the present application does not limit this.
  • the channel access process When executing the channel access process, two results can be obtained: the channel access process is completed and the channel access process is not completed.
  • the completion of the channel access process can be called LBT success, and the incomplete channel access process can be called LBT failure.
  • LBT success there are multiple time domain starting positions in the time-frequency resources used for data transmission. If the channel is determined to be idle before any time domain starting position, the channel access process can be considered to be completed; if the channel is determined to be busy before all time domain starting positions, the channel access process can be considered to be incomplete.
  • the terminal can directly use the uplink resources for uplink transmission; in the scenario based on unlicensed spectrum, after the base station schedules uplink resources for the terminal, the terminal needs to perform LBT on the uplink resources, and only after the LBT is successful can the uplink resources be used for uplink transmission.
  • Figure 2 is a schematic flow interaction diagram for uplink transmission based on unlicensed spectrum. It should be understood that if the terminal performs LBT on the uplink resource and LBT fails, the uplink resource cannot be used.
  • CA Carrier aggregation
  • LTE-A LTE-advanced
  • carrier aggregation means that the terminal can use multiple cells (carriers) for uplink and downlink communication at the same time, thereby supporting high-speed data transmission.
  • carrier aggregation means that the terminal can use multiple cells (carriers) for uplink and downlink communication at the same time, thereby supporting high-speed data transmission.
  • carrier aggregation means that the terminal can use multiple cells (carriers) for uplink and downlink communication at the same time, thereby supporting high-speed data transmission.
  • one cell is the primary cell (PCell) and the others are secondary cells (SCell).
  • PCell primary cell
  • SCell secondary cells
  • the spectrum resources used can also be divided into low-frequency (FR1) spectrum and high-frequency (FR2) spectrum.
  • FR1 low-frequency
  • FR2 high-frequency
  • the base station can use the narrow beam method to aggregate the transmission energy in one direction, thereby increasing the transmission distance, and use the time-division scanning method to expand the transmission direction.
  • High-frequency carriers can be further divided into two types of carriers, FR2-1 and FR2-2; specifically, FR2-2 carriers are in a higher frequency band than FR2-1 carriers.
  • the primary carrier and the secondary carrier can be distinguished according to the functions carried by different carriers.
  • the primary carrier is used to send control signaling and data, such as PC5-RRC messages, SCI signaling, etc.
  • the secondary carrier is mainly used to send data.
  • spectrum can be divided into licensed spectrum and unlicensed spectrum.
  • the terminal can obtain SL resources from the base station. Specifically, the base station can schedule SL resources for the terminal through downlink control information (DCI), or configure SL configuration authorization (configured grant) for the terminal through RRC messages.
  • DCI downlink control information
  • the terminal can receive the configuration information of the SL resource pool from the base station, or obtain the configuration information of the SL resource pool from the pre-configuration, and then select SL resources in the SL resource pool for transmission. Specifically, the terminal can select SL resources in the SL resource pool randomly, or select them based on the results of sensing or partial sensing.
  • SL resource authorization can be scheduled by the base station or selected by the terminal from the configured resource pool.
  • SL grant is used to determine a set of PSCCH time domain (duration) resources and a set of PSSCH duration resources.
  • PSFCH resources do not require the terminal to obtain SL grant in advance.
  • the specific PSFCH resources are mapped by the transmitting terminal according to the resource location of the PSSCH. Specifically, the transmitting terminal starts transmitting PSFCH in the first slot including PSFCH resources after the end interval sl-MinTimeGapPSFCH of the last time slot (slot) of PSSCH.
  • Figure 3 is a diagram of the relationship between PSSCH and PSFCH in the time domain. Among them, sl-MinTimeGapPSFCH is configured in the resource pool, which can be 2 slots or 3 slots.
  • Figure 4 is a schematic flow diagram of PSFCH transmission using SL unlicensed spectrum communication.
  • the transmitting terminal sends PSCCH and PSSCH to the receiving terminal
  • the receiving terminal determines the PSFCH resource according to the location of the PSSCH resource and the sl-MinTimeGapPSFCH configured in the resource pool, and further needs to perform LBT on the PSFCH resource.
  • LBT is successful
  • a HARQ feedback message is sent to the transmitting terminal on the PSFCH resource.
  • the transmitting terminal also receives the HARQ feedback message on the corresponding PSFCH resource.
  • the SL RLF of the unicast connection will be triggered. It can be understood that when the transmitting terminal fails to receive the corresponding HARQ feedback message on the PSFCH receiving opportunity for multiple consecutive times, the SL RLF of the unicast connection will be triggered.
  • Figure 5 is a flowchart for triggering SL RLF.
  • the terminal is configured with a sl-maxNumConsecutiveDTX to control the SL RLF detection based on HARQ feedback.
  • the terminal maintains a counter for each unicast connection/PC5RRC connection to record the number of consecutive DTX times (numConsecutiveDTX).
  • the SL HARQ entity initializes the numConsecutiveDTX variable of each unicast connection to 0.
  • numConsecutiveDTX For each PSFCH reception opportunity, if the SL HARQ entity does not receive a HARQ feedback message on the PSFCH reception opportunity, it considers that the PSFCH reception is missing and increases numConsecutiveDTX by 1; if numConsecutiveDTX reaches sl-maxNumConsecutiveDTX, it indicates RLF to the RRC layer. If HARQ feedback is received on the PSFCH reception opportunity, numConsecutiveDTX is reinitialized to 0.
  • a SL DTX is recorded; if multiple consecutive SL DTXs trigger SL RLF, the transmitting terminal believes that the link quality is poor, for example, the distance between the transmitting terminal and the receiving terminal exceeds the communication distance.
  • the transmitting terminal uses a HARQ entity to maintain the numConsecutiveDTX/DTX counter.
  • the numConsecutiveDTX/DTX counter When a SL DTX occurs on a PSFCH receiving opportunity, the numConsecutiveDTX/DTX counter will increase by 1; when numConsecutiveDTX is greater than or equal to the maximum continuous DTX threshold, the RLF on the PC5-RRC connection will be triggered. Among them, triggering the RLF on the PC5-RRC connection can be understood as releasing the PC5-RRC connection between the transmitting terminal and the receiving terminal.
  • the transmitting terminal maintains a continuous DTX count for the unicast connection and determines the RLF in combination with a configured continuous DTX threshold sl-maxNumConsecutiveDTX, which has the following disadvantages.
  • (1)SL carriers can be divided into FR1 carriers and FR2 carriers.
  • the effective communication distances corresponding to FR1 carriers and FR2 carriers are different.
  • the terminal maintains a continuous DTX count for each unicast connection and cannot distinguish the communication link status of FR1 carriers and FR2 carriers. For example, if multiple consecutive DTX counts occur on the frequency band of the FR2 carrier, RLF on the unicast connection between the two terminals is triggered; in fact, the communication link status of the FR1 carrier is relatively good, but because the communication link status of the FR2 carrier is poor, the sending terminal can no longer send data on the FR1 carrier.
  • (2)SL carriers can be divided into licensed carriers and unlicensed carriers. Unlike licensed carriers, unlicensed carriers will cause more DTX due to LBT failure.
  • the terminal maintains a continuous DTX count for each unicast connection and cannot distinguish the communication link status of the licensed carrier and the unlicensed carrier. For example, if multiple consecutive DTX counts occur on the frequency band of the unlicensed carrier, RLF on the unicast connection between the two terminals is triggered; in fact, the communication link status of the licensed carrier is relatively good, but because the communication link status of the unlicensed carrier is poor As a result, the transmitting terminal can no longer send data on the authorized carrier.
  • SL carriers can be divided into main carriers and auxiliary carriers. Unlike auxiliary carriers, main carriers generally carry control signaling for SL communications. When the communication link status of the main carrier is poor, resulting in multiple consecutive DTXs, the transmission of control signaling is affected, and the data transmission and reception on the auxiliary carrier will also be affected or even stopped; conversely, the communication link status of the auxiliary carrier will not affect the transmission and reception of control signaling on the main carrier.
  • the terminal maintains a continuous DTX count for each unicast connection and cannot distinguish the communication link status of the main carrier and the auxiliary carrier.
  • RLF on the unicast connection between the two terminals is triggered; in fact, the communication link status of the main carrier is relatively good, but because the communication link status of the auxiliary carrier is poor, the sending terminal can no longer send data on the main carrier.
  • FIG6 is a schematic diagram of a system architecture applicable to an embodiment of the present application.
  • the embodiment of the present application is applicable to a sidelink communication scenario.
  • the first terminal and the second terminal can communicate using a licensed carrier and an unlicensed carrier, or using a low-frequency carrier and a high-frequency carrier, or using a main carrier and an auxiliary carrier.
  • the data sending terminal (first terminal) performing sidelink communication can operate in mode 1 or mode 2.
  • the communication method between the sending terminal and the receiving terminal (second terminal) is unicast communication.
  • the embodiment of the present application proposes a method for information transmission, which can improve the reliability of information transmission in a side link.
  • FIG7 a schematic flow diagram of an information transmission method 700 proposed in an embodiment of the present application is shown.
  • the embodiment of the present application is applicable to a first terminal and a second terminal performing unicast communication via a side link.
  • the network device in this embodiment may be a base station, the first terminal may be referred to as a sending terminal, and the second terminal may be referred to as a receiving terminal.
  • the network device sends configuration information to the first terminal, and correspondingly, the first terminal receives the configuration information from the network device.
  • the configuration information includes a first continuous DTX threshold value and a second continuous DTX threshold value, the first continuous DTX threshold value is associated with the first carrier group, and the second continuous DTX threshold value is associated with the second carrier group.
  • the configuration information includes system information block (SIB) information.
  • the first terminal records the value of the first numConsecutiveDTX corresponding to the first carrier group and the value of the second numConsecutiveDTX corresponding to the second carrier group; it can be understood that the first terminal maintains two continuous DTX counters. Among them, the initial value of the first numConsecutiveDTX corresponding to the first carrier group and the second numConsecutiveDTX corresponding to the second carrier group is 0. If the value of the first numConsecutiveDTX recorded by the first terminal is greater than or equal to the first continuous DTX threshold value, the first terminal stops using the first carrier group to transmit information. If the value of the second numConsecutiveDTX recorded by the first terminal is greater than or equal to the second continuous DTX threshold value, the first terminal stops using the second carrier group to transmit information.
  • the first continuous DTX threshold value is the same as the second continuous DTX threshold value.
  • the first continuous DTX threshold value is different from the second continuous DTX threshold value. This embodiment of the present application does not limit this.
  • the first terminal sends first information to the second terminal using a carrier in the first carrier group.
  • the second terminal receives the first information from the first terminal; if the second terminal receives the first information from the first terminal, the first HARQ feedback message corresponding to the first information is sent to the first terminal, and if the second terminal does not receive the first information from the first terminal, the first HARQ feedback message is not sent.
  • the first terminal detects the first HARQ feedback message corresponding to the first information.
  • the first information includes first data.
  • the first terminal sends the first information to the second terminal using a carrier in the first carrier group. It can be understood that the first terminal sends multiple first information to the second terminal using multiple carriers in the first carrier group.
  • the first terminal uses a carrier in the first carrier group to send the first information to the second terminal on the PSSCH.
  • the second terminal receives the first information from the first terminal on the PSSCH; if the second terminal receives the first information, it determines the PSFCH according to the PSSCH, and sends the first HARQ feedback message to the first device on the PSFCH; if the second terminal does not receive the first information, it does not send the first HARQ feedback message.
  • the first terminal detects the first HARQ feedback message corresponding to the first information on the PSFCH.
  • the first terminal after the first terminal sends the first first information to the second terminal using the carrier in the first carrier group, if the first HARQ feedback message corresponding to the first first information is not detected, the first terminal increases the first numConsecutiveDTX by 1.
  • the first terminal After the first terminal sends the second first information to the second terminal using the carrier in the first carrier group, if the first HARQ feedback message corresponding to the second first information is detected, the first terminal increases the first numConsecutiveDTX by 1 again; if the first HARQ feedback message corresponding to the second first information is not detected, the first terminal reinitializes the first numConsecutiveDTX to 0.
  • the first terminal sends the second information to the second terminal using the carrier in the second carrier group.
  • the second terminal receives the second information from the first terminal; if the second terminal receives the second information from the first terminal, it sends the second information to the first terminal. If the second terminal does not receive the second information from the first terminal, the second HARQ feedback message is not sent.
  • the first terminal detects the second HARQ feedback message corresponding to the second information.
  • the second information includes the second data.
  • the first terminal sends the second information to the second terminal using a carrier in the second carrier group. It can be understood that the first terminal sends multiple second information to the second terminal using multiple carriers in the second carrier group.
  • the first terminal uses a carrier in the second carrier group to send the second information to the second terminal on the PSSCH.
  • the second terminal receives the second information from the first terminal on the PSSCH; if the second terminal receives the second information, the PSFCH is determined according to the PSSCH, and the second HARQ feedback message is sent to the first device on the PSFCH; if the second terminal does not receive the second information, the second HARQ feedback message is not sent.
  • the first terminal detects the second HARQ feedback message corresponding to the second information on the PSFCH.
  • the first terminal after the first terminal sends the first second information to the second terminal using the carrier in the second carrier group, if the second HARQ feedback message corresponding to the first second information is not detected, the first terminal increases the second numConsecutiveDTX by 1.
  • the first terminal After the first terminal sends the second second information to the second terminal using the carrier in the second carrier group, if the second HARQ feedback message corresponding to the second second information is detected, the first terminal increases the second numConsecutiveDTX by 1 again; if the second HARQ feedback message corresponding to the second second information is not detected, the first terminal reinitializes the second numConsecutiveDTX to 0.
  • step 720 and step 730 may be performed simultaneously, and step 730 may also be performed before step 720, which is not limited in the embodiment of the present application.
  • the number of times the first terminal fails to detect the first HARQ feedback message corresponding to the first information continuously is greater than or equal to the first continuous DTX threshold value, stop using the first carrier group to transmit information; and/or, if the number of times the first terminal fails to detect the second HARQ feedback message corresponding to the second information continuously is greater than or equal to the second continuous DTX threshold value, stop using the second carrier group to transmit information.
  • the number of times the first terminal fails to detect the first HARQ feedback message corresponding to the first information continuously can be understood as the value of the first numConsecutiveDTX recorded by the first terminal.
  • the number of times the first terminal fails to detect the second HARQ feedback message corresponding to the second information continuously can be understood as the value of the second numConsecutiveDTX recorded by the first terminal.
  • the first terminal fails to detect the first HARQ feedback message corresponding to the first information continuously for a number greater than or equal to the first continuous DTX threshold value
  • the first carrier group is stopped from transmitting information.
  • the first terminal fails to detect the first HARQ feedback message corresponding to the first information continuously for a number greater than or equal to the first continuous DTX threshold value
  • the first terminal sends first indication information to the network device, and the first indication information is used to indicate that the first carrier group is invalid.
  • the first terminal if the first terminal fails to detect the first HARQ feedback message corresponding to the first information continuously for a number greater than or equal to the first continuous DTX threshold value, the first terminal sends second indication information to the second terminal, and the second indication information is used to indicate that the first carrier group is invalid.
  • the second carrier group is stopped from transmitting information.
  • the first terminal fails to detect the second HARQ feedback message corresponding to the second information continuously for a number greater than or equal to the second continuous DTX threshold value
  • the first terminal sends first indication information to the network device, and the first indication information is used to indicate that the second carrier group is invalid.
  • the first terminal if the first terminal fails to detect the second HARQ feedback message corresponding to the second information continuously for a number greater than or equal to the second continuous DTX threshold value, the first terminal sends second indication information to the second terminal, and the second indication information is used to indicate that the second carrier group is invalid.
  • the number of times that the first terminal fails to detect the first HARQ feedback message corresponding to the first information continuously is greater than or equal to the first continuous DTX threshold value
  • the number of times that the first terminal fails to detect the second HARQ feedback message corresponding to the second information continuously is greater than or equal to the second continuous DTX threshold value
  • the first terminal sends first indication information to the network device, and the first indication information is used to indicate that the first carrier group and the second carrier group are invalid.
  • the first terminal sends second indication information to the second terminal, and the second indication information is used to indicate that the first carrier group and the second carrier group are invalid.
  • the first terminal releases the unicast connection/PC5-RRC connection between the first terminal and the second terminal.
  • the first terminal records and sends the first The number of times the first HARQ feedback message is continuously not detected during the process of transmitting the second information to the second terminal using the carrier in the second carrier group is recorded, and the number of times the second HARQ feedback message is continuously not detected during the process of sending the second information to the second terminal using the carrier in the second carrier group is recorded.
  • the first carrier group is stopped from transmitting the information, and the second carrier group can be continued to be used to transmit the information.
  • the technical solution of the embodiment of the present application can improve the reliability of information transmission of the side link.
  • the first carrier group includes low-frequency carriers, and the second carrier group includes high-frequency carriers.
  • the first carrier group may be referred to as an FR1 carrier group, and the second carrier group may be referred to as an FR2 carrier group.
  • the second continuous DTX threshold value corresponding to the FR2 carrier group is greater than the first continuous DTX threshold value corresponding to the FR1 carrier group.
  • the communication distance of the high-frequency carrier is shorter, and the probability of failure in transmitting information using the high-frequency carrier is greater. Therefore, the second continuous DTX threshold value is greater than the first continuous DTX threshold value, which can improve the reliability of transmitting information using the high-frequency carrier.
  • the FR2 carrier group can be further divided into two high-frequency carrier groups, FR2-1 and FR2-2.
  • the first terminal maintains three continuous DTX counters.
  • the first terminal records the value of the first numConsecutiveDTX corresponding to the FR1 carrier group, the value of the second numConsecutiveDTX corresponding to the FR2-1 carrier group, and the value of the third numConsecutiveDTX corresponding to the FR2-2 carrier group. If the value of the first numConsecutiveDTX recorded by the first terminal is greater than or equal to the first continuous DTX threshold value, the first terminal stops using the FR1 carrier group to transmit information.
  • the first terminal stops using the FR2-1 carrier group to transmit information. If the value of the third numConsecutiveDTX recorded by the first terminal is greater than or equal to the second continuous DTX threshold value, the first terminal stops using the FR2-2 carrier group to transmit information.
  • the first carrier group includes licensed spectrum carriers
  • the second carrier group includes unlicensed spectrum carriers.
  • the first carrier group may be referred to as a licensed spectrum carrier group
  • the second carrier group may be referred to as an unlicensed spectrum carrier group.
  • the second continuous DTX threshold value corresponding to the unlicensed spectrum carrier group is greater than the first continuous DTX threshold value corresponding to the licensed spectrum carrier group.
  • the probability of sending resource collision is greater and the number of information transmission failures is greater. Therefore, the second continuous DTX threshold value is greater than the first continuous DTX threshold value, which can improve the reliability of information transmission using unlicensed spectrum carriers.
  • the first carrier group includes a primary carrier
  • the second carrier group includes a secondary carrier.
  • the first carrier group may be referred to as a primary carrier group
  • the second carrier group may be referred to as a secondary carrier group.
  • the primary carrier group includes one carrier
  • the secondary carrier group includes one or more carriers.
  • the first terminal uses the carrier in the first carrier group to send the first information to the second terminal, if the first terminal fails to detect the first HARQ feedback message corresponding to the first information for a number greater than or equal to the first continuous DTX threshold value, the first terminal stops using the first carrier group and the second carrier group to transmit information. It can be understood that after the first terminal uses the main carrier to send the first information to the second terminal, if the first terminal fails to detect the first HARQ feedback message corresponding to the first information for a number greater than or equal to the first continuous DTX threshold value, the first terminal stops using the main carrier group and the auxiliary carrier group to transmit information.
  • the PSSCH resources for sending data using the auxiliary carrier need to be scheduled by the main carrier. If the main carrier group is stopped from being used to transmit information, the auxiliary carrier cannot be used to transmit information.
  • the first terminal after the first terminal sends the first information to the second terminal using the carrier in the first carrier group, if the first terminal has not continuously detected the first HARQ feedback message corresponding to the first information for a number greater than or equal to the first continuous DTX threshold value, the first terminal releases the unicast connection between the first terminal and the second terminal.
  • the configuration information sent by the network device to the first terminal also includes a third continuous DTX threshold value and a fourth continuous DTX threshold value, the third continuous DTX threshold value is associated with the third carrier group, and the fourth continuous DTX threshold value is associated with the fourth carrier group.
  • the first terminal not only records the first numConsecutiveDTX corresponding to the first carrier group and the second numConsecutiveDTX corresponding to the second carrier group, but also records the third numConsecutiveDTX corresponding to the third carrier group and the fourth numConsecutiveDTX corresponding to the fourth carrier group. It can be understood that the first terminal maintains four continuous DTX counters. Among them, the initial values of the third numConsecutiveDTX and the fourth numConsecutiveDTX are also 0. If the value of the first numConsecutiveDTX recorded by the first terminal is greater than or equal to the first continuous DTX threshold value, the first terminal stops using the first carrier group to transmit information. Information.
  • the first terminal stops using the second carrier group to transmit information. If the value of the third numConsecutiveDTX recorded by the first terminal is greater than or equal to the third continuous DTX threshold value, the first terminal stops using the third carrier group to transmit information. If the value of the fourth numConsecutiveDTX recorded by the first terminal is greater than or equal to the fourth continuous DTX threshold value, the first terminal stops using the fourth carrier group to transmit information. Compared with the solution of recording a numConsecutiveDTX for all carriers and configuring a continuous DTX threshold value, the technical solution of the embodiment of the present application can improve the reliability of information transmission in the side link.
  • the first continuous DTX threshold, the second continuous DTX threshold, the third continuous DTX threshold, and the fourth continuous DTX threshold may be the same or different, which is not limited in the embodiment of the present application.
  • the first terminal uses a carrier in the third carrier group to send the third information to the second terminal.
  • the second terminal receives the third information from the first terminal; if the second terminal receives the third information from the first terminal, the third HARQ feedback message corresponding to the third information is sent to the first terminal, and if the second terminal does not receive the third information from the first terminal, the third HARQ feedback message is not sent.
  • the first terminal detects the third HARQ feedback message corresponding to the third information.
  • the third information includes third data.
  • the first terminal uses a carrier in the fourth carrier group to send fourth information to the second terminal.
  • the second terminal receives the fourth information from the first terminal; if the second terminal receives the fourth information from the first terminal, the fourth HARQ feedback message corresponding to the fourth information is sent to the first terminal, and if the second terminal does not receive the fourth information from the first terminal, the fourth HARQ feedback message is not sent.
  • the first terminal detects the fourth HARQ feedback message corresponding to the fourth information.
  • the fourth information includes fourth data.
  • the first carrier group is stopped from transmitting information; and/or, if the number of times that the first terminal fails to detect the second HARQ feedback message corresponding to the second information is greater than or equal to the second continuous DTX threshold, the second carrier group is stopped from transmitting information; and/or, if the number of times that the first terminal fails to detect the third HARQ feedback message corresponding to the third information is greater than or equal to the third continuous DTX threshold, the first terminal stops using the third carrier group to transmit information; and/or, if the number of times that the first terminal fails to detect the fourth HARQ feedback message corresponding to the fourth information is greater than or equal to the fourth continuous DTX threshold, the first terminal stops using the fourth carrier group to transmit information.
  • the number of times that the first terminal fails to detect the third HARQ feedback message corresponding to the third information can be understood as the value of the third numConsecutiveDTX recorded by the first terminal.
  • the number of times that the first terminal fails to detect the fourth HARQ feedback message corresponding to the fourth information can be understood as the value of the fourth numConsecutiveDTX recorded by the first terminal.
  • the first terminal fails to detect the first HARQ feedback message corresponding to the first information continuously for a number greater than or equal to the first continuous DTX threshold value, the first terminal fails to detect the second HARQ feedback message corresponding to the second information continuously for a number greater than or equal to the second continuous DTX threshold value, the first terminal fails to detect the third HARQ feedback message corresponding to the third information continuously for a number greater than or equal to the third continuous DTX threshold value, and the first terminal fails to detect the fourth HARQ feedback message corresponding to the fourth information continuously for a number greater than or equal to the fourth continuous DTX threshold value, the first terminal releases the unicast connection between the first terminal and the second terminal.
  • the first carrier group and the second carrier group include authorized spectrum carriers
  • the third carrier group and the fourth carrier group include unlicensed spectrum carriers
  • the first carrier group and the third carrier group include low-frequency carriers
  • the second carrier group and the fourth carrier group include high-frequency carriers. It can be understood that the carriers in the first carrier group are low-frequency carriers in the authorized spectrum carriers, the carriers in the second carrier group are high-frequency carriers in the authorized spectrum carriers, the carriers in the third carrier group are low-frequency carriers in the unlicensed spectrum carriers, and the carriers in the fourth carrier group are high-frequency carriers in the unlicensed spectrum carriers.
  • the first carrier group can be called the FR1 carrier group in the authorized spectrum
  • the second carrier group can be called the FR2 carrier group in the authorized spectrum
  • the third carrier group can be called the FR1 carrier group in the unlicensed spectrum
  • the second carrier group can be called the FR2 carrier group in the unlicensed spectrum.
  • the sending terminal is the above-mentioned first terminal
  • the receiving terminal is the above-mentioned second terminal.
  • FIG8 is a schematic flow diagram of an example of the information transmission method of an embodiment of the present application.
  • the transmitting terminal maintains a continuous DTX counter corresponding to the FR1 carrier group and a continuous DTX counter corresponding to the FR2 carrier group. It can be understood that the transmitting terminal records the value of the first numConsecutiveDTX corresponding to the FR1 carrier group and the value of the second numConsecutiveDTX corresponding to the FR2 carrier group.
  • the specific steps are as follows.
  • the network device sends configuration information or SIB information to the transmitting terminal.
  • the transmitting terminal receives the configuration information or SIB information from the network device.
  • the configuration information or SIB information includes a first continuous DTX threshold value and a second continuous DTX threshold value.
  • the DTX threshold value is associated with the FR1 carrier group and the second consecutive DTX threshold value is associated with the FR2 carrier group.
  • the configuration information or SIB information sent by the network device to the first terminal includes a sl-maxNumConsecutiveDTX_FR1 field and a sl-maxNumConsecutiveDTX_FR2 field
  • the sl-maxNumConsecutiveDTX_FR1 field indicates a first continuous DTX threshold value
  • the sl-maxNumConsecutiveDTX_FR2 field indicates a second continuous DTX threshold value.
  • the first continuous DTX threshold value and the second continuous DTX threshold value may be the same or different.
  • the configuration information or SIB information sent by the network device to the first terminal includes the sl-maxNumConsecutiveDTX field, and the first continuous DTX threshold value and the second continuous DTX threshold value are equal to the continuous DTX threshold value indicated by the sl-maxNumConsecutiveDTX field.
  • the first continuous DTX threshold value and the second continuous DTX threshold value are the same.
  • the transmitting terminal sends first data to the receiving terminal using a carrier in the FR1 carrier group.
  • the transmitting terminal sends second data to the receiving terminal using a carrier in the FR2 carrier group.
  • the receiving terminal receives the first data from the transmitting terminal; if the receiving terminal receives the first data from the transmitting terminal, it uses the carrier in the FR1 carrier group to send a first HARQ feedback message corresponding to the first data to the transmitting terminal; if the receiving terminal does not receive the first data from the transmitting terminal, it does not send the first HARQ feedback message.
  • the receiving terminal receives the second data from the sending terminal; if the receiving terminal receives the second data from the sending terminal, it uses the carrier in the FR2 carrier group to send a second HARQ feedback message corresponding to the second data to the sending terminal; if the receiving terminal does not receive the second data from the sending terminal, it does not send the second HARQ feedback message.
  • the transmitting terminal After sending the first data to the receiving terminal, the transmitting terminal detects a first HARQ feedback message corresponding to the first data; if the transmitting terminal does not detect the first HARQ feedback message corresponding to the first data, the first numConsecutiveDTX is increased by 1.
  • the transmitting terminal After sending the second data to the receiving terminal, the transmitting terminal detects the second HARQ feedback message corresponding to the second data; if the transmitting terminal does not detect the second HARQ feedback message corresponding to the second data, the second numConsecutiveDTX is increased by 1.
  • the transmitting terminal uses multiple carriers in the FR1 carrier group to send multiple first data to the receiving terminal; the transmitting terminal uses multiple carriers in the FR2 carrier group to send multiple second data to the receiving terminal.
  • the transmitting terminal records the value of the first numConsecutiveDTX corresponding to the FR1 carrier group and the value of the second numConsecutiveDTX corresponding to the FR2 carrier group.
  • the transmitting terminal stops using the FR1 carrier group to transmit information/data and control signaling. If the value of the second numConsecutiveDTX recorded by the transmitting terminal is greater than or equal to the second continuous DTX threshold value, the transmitting terminal stops using the FR2 carrier group to transmit information/data and control signaling.
  • the value of the first numConsecutiveDTX recorded by the transmitting terminal can be understood as the number of times the transmitting terminal has failed to detect the first HARQ feedback message corresponding to the first data continuously.
  • the value of the second numConsecutiveDTX recorded by the transmitting terminal can be understood as the number of times the transmitting terminal has failed to detect the second HARQ feedback message corresponding to the second data continuously.
  • the sending terminal releases the unicast connection between the sending terminal and the receiving terminal.
  • Figure 9 is a schematic flow diagram of an example of the information transmission method of an embodiment of the present application.
  • the sending terminal maintains a continuous DTX counter corresponding to the authorized spectrum carrier group and a continuous DTX counter corresponding to the unlicensed spectrum carrier group. It can be understood that the sending terminal records the value of the first numConsecutiveDTX corresponding to the authorized spectrum carrier group and the value of the second numConsecutiveDTX corresponding to the unlicensed spectrum carrier group.
  • the specific steps are as follows.
  • the network device sends configuration information or SIB information to the transmitting terminal.
  • the transmitting terminal receives the configuration information or SIB information from the network device.
  • the configuration information or SIB information includes a first continuous DTX threshold value and a second continuous DTX threshold value.
  • the first continuous DTX threshold value is associated with the licensed spectrum carrier group
  • the second continuous DTX threshold value is associated with the unlicensed spectrum carrier group.
  • the configuration information or SIB information sent by the network device to the first terminal includes an sl-maxNumConsecutiveDTX_lic field and an sl-maxNumConsecutiveDTX_unlic field, the sl-maxNumConsecutiveDTX_lic field indicates a first continuous DTX threshold value, and the sl-maxNumConsecutiveDTX_unlic field indicates a second continuous DTX threshold value.
  • the first continuous DTX threshold value and the second continuous DTX threshold value may be the same or different.
  • the configuration information or SIB information sent by the network device to the first terminal includes the sl-maxNumConsecutiveDTX field, and the first continuous DTX threshold value and the second continuous DTX threshold value are equal to the continuous DTX threshold value indicated by the sl-maxNumConsecutiveDTX field.
  • the first continuous DTX threshold value and the second continuous DTX threshold value are the same.
  • the transmitting terminal sends first data to the receiving terminal using a carrier in the licensed spectrum carrier group.
  • the transmitting terminal sends second data to the receiving terminal using a carrier in the unlicensed spectrum carrier group.
  • the receiving terminal receives the first data from the transmitting terminal; if the receiving terminal receives the first data from the transmitting terminal, it uses the carrier in the authorized spectrum carrier group to send the first HARQ feedback message corresponding to the first data to the transmitting terminal; if the receiving terminal does not receive the first data from the transmitting terminal, it does not send the first HARQ feedback message.
  • the receiving terminal receives the second data from the sending terminal; if the receiving terminal receives the second data from the sending terminal, it uses the carrier in the unlicensed spectrum carrier group to send a second HARQ feedback message corresponding to the second data to the sending terminal; if the receiving terminal does not receive the second data from the sending terminal, it does not send the second HARQ feedback message.
  • the transmitting terminal After sending the first data to the receiving terminal, the transmitting terminal detects a first HARQ feedback message corresponding to the first data; if the transmitting terminal does not detect the first HARQ feedback message corresponding to the first data, the first numConsecutiveDTX is increased by 1.
  • the transmitting terminal After sending the second data to the receiving terminal, the transmitting terminal detects the second HARQ feedback message corresponding to the second data; if the transmitting terminal does not detect the second HARQ feedback message corresponding to the second data, the second numConsecutiveDTX is increased by 1.
  • the transmitting terminal uses multiple carriers in the authorized spectrum carrier group to send multiple first data to the receiving terminal; the transmitting terminal uses multiple carriers in the unlicensed spectrum carrier group to send multiple second data to the receiving terminal.
  • the transmitting terminal records the value of the first numConsecutiveDTX corresponding to the authorized spectrum carrier group and the value of the second numConsecutiveDTX corresponding to the unlicensed spectrum carrier group.
  • the transmitting terminal stops using the authorized spectrum carrier group to transmit information/data and control signaling. If the value of the second numConsecutiveDTX recorded by the transmitting terminal is greater than or equal to the second continuous DTX threshold value, the transmitting terminal stops using the unlicensed spectrum carrier group to transmit information/data and control signaling.
  • the value of the first numConsecutiveDTX recorded by the transmitting terminal can be understood as the number of times the transmitting terminal has failed to detect the first HARQ feedback message corresponding to the first data continuously.
  • the value of the second numConsecutiveDTX recorded by the transmitting terminal can be understood as the number of times the transmitting terminal has failed to detect the second HARQ feedback message corresponding to the second data continuously.
  • the sending terminal releases the unicast connection between the sending terminal and the receiving terminal.
  • FIG10 is a schematic flow diagram of an example of the information transmission method of an embodiment of the present application.
  • the transmitting terminal maintains a continuous DTX counter corresponding to the main carrier group and a continuous DTX counter corresponding to the auxiliary carrier group. It can be understood that the transmitting terminal records the value of the first numConsecutiveDTX corresponding to the main carrier group and the value of the second numConsecutiveDTX corresponding to the auxiliary carrier group.
  • the specific steps are as follows.
  • the network device sends configuration information or SIB information to the transmitting terminal.
  • the transmitting terminal receives the configuration information or SIB information from the network device.
  • the configuration information or SIB information includes a first continuous DTX threshold value and a second continuous DTX threshold value.
  • the first continuous DTX threshold value is associated with the primary carrier group
  • the second continuous DTX threshold value is associated with the secondary carrier group.
  • the configuration information or SIB information sent by the network device to the first terminal includes an sl-maxNumConsecutiveDTX_pcc field and an sl-maxNumConsecutiveDTX_scc field, the sl-maxNumConsecutiveDTX_pcc field indicates a first continuous DTX threshold value, and the sl-maxNumConsecutiveDTX_scc field indicates a second continuous DTX threshold value.
  • the first continuous DTX threshold value and the second continuous DTX threshold value may be the same or different.
  • the configuration information or SIB information sent by the network device to the first terminal includes the sl-maxNumConsecutiveDTX field, and the first continuous DTX threshold value and the second continuous DTX threshold value are equal to the continuous DTX threshold value indicated by the sl-maxNumConsecutiveDTX field.
  • the first continuous DTX threshold value and the second continuous DTX threshold value are the same.
  • the transmitting terminal sends first data to the receiving terminal using a carrier in the primary carrier group.
  • the transmitting terminal sends second data to the receiving terminal using a carrier in the secondary carrier group.
  • the receiving terminal receives the first data from the transmitting terminal; if the receiving terminal receives the first data from the transmitting terminal, the first HARQ feedback message corresponding to the first data is sent to the transmitting terminal by using the carrier in the main carrier group, and if the receiving terminal does not receive the first data from the transmitting terminal, the first HARQ feedback message is not sent.
  • the receiving terminal receives the second data from the sending terminal; if the receiving terminal receives the second data from the sending terminal, it uses the carrier in the auxiliary carrier group to send a second HARQ feedback message corresponding to the second data to the sending terminal, and if the receiving terminal does not receive the second data from the sending terminal, it does not send the second HARQ feedback message.
  • the transmitting terminal After sending the first data to the receiving terminal, the transmitting terminal detects a first HARQ feedback message corresponding to the first data; if the transmitting terminal does not detect the first HARQ feedback message corresponding to the first data, the first numConsecutiveDTX is increased by 1.
  • the transmitting terminal After sending the second data to the receiving terminal, the transmitting terminal detects the second HARQ feedback message corresponding to the second data; if the transmitting terminal does not detect the second HARQ feedback message corresponding to the second data, the second numConsecutiveDTX is increased by 1.
  • the transmitting terminal uses multiple carriers in the main carrier group to send multiple first data to the receiving terminal; the transmitting terminal uses multiple carriers in the auxiliary carrier group to send multiple second data to the receiving terminal.
  • the transmitting terminal records the value of the first numConsecutiveDTX corresponding to the main carrier group and the value of the second numConsecutiveDTX corresponding to the auxiliary carrier group.
  • the transmitting terminal stops using the main carrier group and the auxiliary carrier group to transmit information/data and control signaling. If the value of the second numConsecutiveDTX recorded by the transmitting terminal is greater than or equal to the second continuous DTX threshold value, the transmitting terminal stops using the auxiliary carrier group to transmit information/data and control signaling.
  • the value of the first numConsecutiveDTX recorded by the transmitting terminal can be understood as the number of times the transmitting terminal has failed to detect the first HARQ feedback message corresponding to the first data continuously.
  • the value of the second numConsecutiveDTX recorded by the transmitting terminal can be understood as the number of times the transmitting terminal has failed to detect the second HARQ feedback message corresponding to the second data continuously.
  • the sending terminal stops using the auxiliary carrier group to transmit information/data and control signaling, but can continue to use the main carrier group to transmit information/data and control signaling.
  • the sending terminal releases the unicast connection between the sending terminal and the receiving terminal.
  • the sending terminal releases the unicast connection between the sending terminal and the receiving terminal.
  • Figure 11 is a schematic flow diagram of an example of the information transmission method of an embodiment of the present application.
  • the sending terminal maintains a continuous DTX counter corresponding to the low-frequency carrier group of the authorized spectrum carrier, a continuous DTX counter corresponding to the high-frequency carrier group of the authorized spectrum carrier, a continuous DTX counter corresponding to the low-frequency carrier group of the unlicensed spectrum carrier, and a continuous DTX counter corresponding to the high-frequency carrier group of the unlicensed spectrum carrier.
  • the sending terminal records the value of the first numConsecutiveDTX corresponding to the low-frequency carrier group of the authorized spectrum carrier, the value of the second numConsecutiveDTX corresponding to the high-frequency carrier group of the authorized spectrum carrier, the value of the third numConsecutiveDTX corresponding to the low-frequency carrier group of the unlicensed spectrum carrier, and the value of the fourth numConsecutiveDTX corresponding to the high-frequency carrier group of the unlicensed spectrum carrier.
  • the specific steps are as follows.
  • the network device sends configuration information or SIB information to the transmitting terminal, and correspondingly, the transmitting terminal receives the configuration information or SIB information from the network device.
  • the configuration information or SIB information includes a first continuous DTX threshold value, a second continuous DTX threshold value, a third continuous DTX threshold value, and a fourth continuous DTX threshold value.
  • the first continuous DTX threshold value is associated with a low-frequency carrier group of a licensed spectrum carrier
  • the second continuous DTX threshold value is associated with a high-frequency carrier group of a licensed spectrum carrier
  • the third continuous DTX threshold value is associated with a low-frequency carrier group of an unlicensed spectrum carrier
  • the fourth continuous DTX threshold value is associated with a high-frequency carrier group of an unlicensed spectrum carrier.
  • the configuration information or SIB information sent by the network device to the first terminal includes a sl-maxNumConsecutiveDTX_lic_FR1 field, a sl-maxNumConsecutiveDTX_lic_FR2 field, a sl-maxNumConsecutiveDTX_unlic_FR1 field, and a sl-maxNumConsecutiveDTX_unlic_FR2 field.
  • the sl-maxNumConsecutiveDTX_lic_FR1 field indicates a first continuous DTX threshold value
  • the sl-maxNumConsecutiveDTX_lic_FR2 field indicates a second continuous DTX threshold value
  • the sl-maxNumConsecutiveDTX_unlic_FR1 field indicates a third continuous DTX threshold value
  • the sl-maxNumConsecutiveDTX_unlic_FR2 indicates a fourth continuous DTX threshold value.
  • the first continuous DTX threshold value, the second continuous DTX threshold value, the third continuous DTX threshold value, and the fourth continuous DTX threshold value may be the same or different.
  • the configuration information or SIB information sent by the network device to the first terminal includes the sl-maxNumConsecutiveDTX field, and the first continuous DTX threshold value, the second continuous DTX threshold value, the third continuous DTX threshold value, and the fourth continuous DTX threshold value are equal to the continuous DTX threshold value indicated by the sl-maxNumConsecutiveDTX field.
  • the first continuous DTX threshold value, the second continuous DTX threshold value, the third continuous DTX threshold value, and the fourth continuous DTX threshold value are the same.
  • the transmitting terminal sends first data to the receiving terminal using a carrier in the low frequency carrier group of the authorized spectrum carrier.
  • the transmitting terminal sends second data to the receiving terminal using a carrier in the high frequency carrier group of the authorized spectrum carrier.
  • the transmitting terminal sends third data to the receiving terminal using a carrier in the low frequency carrier group of the unlicensed spectrum carrier.
  • the transmitting terminal sends fourth data to the receiving terminal using a carrier in the high frequency carrier group of the unlicensed spectrum carrier.
  • the receiving terminal receives the first data from the sending terminal; if the receiving terminal receives the first data from the sending terminal, then A first HARQ feedback message corresponding to the first data is sent to the sending terminal using a carrier in the low-frequency carrier group of the authorized spectrum carrier; if the receiving terminal does not receive the first data from the sending terminal, the first HARQ feedback message is not sent.
  • the receiving terminal receives the second data from the sending terminal; if the receiving terminal receives the second data from the sending terminal, it uses the carrier in the high-frequency carrier group of the authorized spectrum carrier to send a second HARQ feedback message corresponding to the second data to the sending terminal; if the receiving terminal does not receive the second data from the sending terminal, it does not send the second HARQ feedback message.
  • the receiving terminal receives the third data from the sending terminal; if the receiving terminal receives the third data from the sending terminal, it uses the carrier in the low-frequency carrier group of the unlicensed spectrum carrier to send a third HARQ feedback message corresponding to the third data to the sending terminal; if the receiving terminal does not receive the third data from the sending terminal, it does not send the third HARQ feedback message.
  • the receiving terminal receives the fourth data from the sending terminal; if the receiving terminal receives the fourth data from the sending terminal, it uses the carrier in the high-frequency carrier group of the unlicensed spectrum carrier to send the fourth HARQ feedback message corresponding to the fourth data to the sending terminal; if the receiving terminal does not receive the fourth data from the sending terminal, it does not send the fourth HARQ feedback message.
  • the transmitting terminal After sending the first data to the receiving terminal, the transmitting terminal detects a first HARQ feedback message corresponding to the first data; if the transmitting terminal does not detect the first HARQ feedback message corresponding to the first data, the first numConsecutiveDTX is increased by 1.
  • the transmitting terminal After sending the second data to the receiving terminal, the transmitting terminal detects the second HARQ feedback message corresponding to the second data; if the transmitting terminal does not detect the second HARQ feedback message corresponding to the second data, the second numConsecutiveDTX is increased by 1.
  • the sending terminal After sending the third data to the receiving terminal, the sending terminal detects a third HARQ feedback message corresponding to the third data; if the sending terminal does not detect the third HARQ feedback message corresponding to the third data, the third numConsecutiveDTX is increased by 1.
  • the sending terminal After sending the fourth data to the receiving terminal, the sending terminal detects a fourth HARQ feedback message corresponding to the fourth data; if the sending terminal does not detect the fourth HARQ feedback message corresponding to the fourth data, the fourth numConsecutiveDTX is increased by 1.
  • the transmitting terminal uses multiple carriers in the low-frequency carrier group of the authorized spectrum carrier to send multiple first data to the receiving terminal; the transmitting terminal uses multiple carriers in the high-frequency carrier group of the authorized spectrum carrier to send multiple second data to the receiving terminal; the transmitting terminal uses multiple carriers in the low-frequency carrier group of the unlicensed spectrum carrier to send multiple third data to the receiving terminal; the transmitting terminal uses multiple carriers in the high-frequency carrier group of the unlicensed spectrum carrier to send multiple fourth data to the receiving terminal.
  • the transmitting terminal records the value of the first numConsecutiveDTX corresponding to the low-frequency carrier group of the authorized spectrum carrier, the value of the second numConsecutiveDTX corresponding to the high-frequency carrier group of the authorized spectrum carrier, the value of the third numConsecutiveDTX corresponding to the low-frequency carrier group of the unlicensed spectrum carrier, and the value of the fourth numConsecutiveDTX corresponding to the high-frequency carrier group of the unlicensed spectrum carrier.
  • the transmitting terminal stops using the low-frequency carrier group of the authorized spectrum carrier to transmit information/data and control signaling. If the value of the second numConsecutiveDTX recorded by the transmitting terminal is greater than or equal to the second continuous DTX threshold value, the transmitting terminal stops using the high-frequency carrier group of the authorized spectrum carrier to transmit information/data and control signaling.
  • the transmitting terminal stops using the low-frequency carrier group of the unlicensed spectrum carrier to transmit information/data and control signaling. If the value of the fourth numConsecutiveDTX recorded by the transmitting terminal is greater than or equal to the fourth continuous DTX threshold value, the transmitting terminal stops using the high-frequency carrier group of the unlicensed spectrum carrier to transmit information/data and control signaling.
  • the value of the first numConsecutiveDTX recorded by the transmitting terminal can be understood as the number of times the transmitting terminal has failed to detect the first HARQ feedback message corresponding to the first data in a row.
  • the value of the second numConsecutiveDTX recorded by the transmitting terminal can be understood as the number of times the transmitting terminal has failed to detect the second HARQ feedback message corresponding to the second data in a row.
  • the value of the third numConsecutiveDTX recorded by the transmitting terminal can be understood as the number of times the transmitting terminal has failed to detect the third HARQ feedback message corresponding to the third data in a row.
  • the value of the fourth numConsecutiveDTX recorded by the transmitting terminal can be understood as the number of times the transmitting terminal has failed to detect the fourth HARQ feedback message corresponding to the fourth data in a row.
  • the sending terminal releases the unicast connection between the sending terminal and the receiving terminal.
  • FIG12 is a schematic block diagram of a communication device 1200 according to an embodiment of the present application.
  • the device can be applied to or deployed in the present application.
  • the device performs unicast communication with the second terminal via a side link, and the communication device 1200 includes:
  • the transceiver unit 1210 is configured to receive configuration information from a network device, where the configuration information includes a first continuous discontinuous transmission DTX threshold value and a second continuous DTX threshold value, where the first continuous DTX threshold value is associated with a first carrier group, and the second continuous DTX threshold value is associated with a second carrier group;
  • the transceiver unit 1210 is further configured to send first information to the second terminal using a carrier in the first carrier group;
  • the transceiver unit 1210 is further configured to send second information to the second terminal using a carrier in the second carrier group;
  • Processing unit 1220 is used to stop using the first carrier group to transmit information if the device has not continuously detected the first hybrid automatic repeat request HARQ feedback message corresponding to the first information for a number of times greater than or equal to the first continuous DTX threshold value; and/or stop using the second carrier group to transmit information if the device has not continuously detected the second HARQ feedback message corresponding to the second information for a number of times greater than or equal to the second continuous DTX threshold value.
  • the processing unit 1220 is also used to release the unicast connection between the device and the second terminal if the number of times the device has not continuously detected the first HARQ feedback message corresponding to the first information is greater than or equal to the first continuous DTX threshold value, and the number of times the device has not continuously detected the second HARQ feedback message corresponding to the second information is greater than or equal to the second continuous DTX threshold value.
  • the first carrier group includes low-frequency carriers, and the second carrier group includes high-frequency carriers; or, the first carrier group includes licensed spectrum carriers, and the second carrier group includes unlicensed spectrum carriers.
  • the second continuous DTX threshold value is greater than the first continuous DTX threshold value.
  • the first carrier group includes a primary carrier
  • the second carrier group includes a secondary carrier
  • the processing unit 1220 is specifically used to stop using the first carrier group and the second carrier group to transmit information if the device fails to detect the first HARQ feedback message corresponding to the first information continuously for a number of times greater than or equal to the first continuous DTX threshold value.
  • the processing unit 1220 is further used to release the unicast connection between the device and the second terminal if the number of times that the device fails to detect the first HARQ feedback message corresponding to the first information continuously is greater than or equal to the first continuous DTX threshold value.
  • the configuration information further includes a third continuous DTX threshold value and a fourth continuous DTX threshold value, the third continuous DTX threshold value is associated with a third carrier group, and the fourth continuous DTX threshold value is associated with a fourth carrier group;
  • the transceiver unit 1210 is further configured to send third information to the second terminal using a carrier in the third carrier group;
  • the transceiver unit 1210 is further configured to send fourth information to the second terminal using a carrier in the fourth carrier group;
  • the processing unit 1220 is also used to stop using the third carrier group to transmit information if the number of times the third HARQ feedback message corresponding to the third information is not detected continuously is greater than or equal to the third continuous DTX threshold value; and/or stop using the fourth carrier group to transmit information if the number of times the fourth HARQ feedback message corresponding to the fourth information is not detected continuously is greater than or equal to the fourth continuous DTX threshold value.
  • the processing unit 1220 is also used to release the unicast connection between the device and the second terminal if the number of times the device has not continuously detected the first HARQ feedback message corresponding to the first information is greater than or equal to the first continuous DTX threshold value, the number of times the device has not continuously detected the second HARQ feedback message corresponding to the second information is greater than or equal to the second continuous DTX threshold value, the number of times the device has not continuously detected the third HARQ feedback message corresponding to the third information is greater than or equal to the third continuous DTX threshold value, and the number of times the device has not continuously detected the fourth HARQ feedback message corresponding to the fourth information is greater than or equal to the fourth continuous DTX threshold value.
  • the first carrier group and the second carrier group include licensed spectrum carriers
  • the third carrier group and the fourth carrier group include unlicensed spectrum carriers
  • the first carrier group and the third carrier group include low-frequency carriers
  • the second carrier group and the fourth carrier group include high-frequency carriers.
  • FIG13 is a schematic block diagram of another communication device 1300 according to an embodiment of the present application.
  • the communication device 1300 includes: a processor 1310, a memory 1320, and a communication interface 1330;
  • the memory 1320 is used to store computer programs
  • the processor 1310 is coupled to the memory 1320 via the communication interface 1330, and the processor 1310 is used to call and run the computer program in the memory 1320 to implement the method in the embodiment of the present application.
  • the communication device can be applied to the first terminal in the embodiment of the present application.
  • the processor 1310 and the memory 1320 are integrated together.
  • the processor 1310 may be an integrated circuit chip with signal processing capability. Each step of the embodiment can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.
  • the steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor can be combined to perform.
  • the software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • an embodiment of the present application also provides a communication device, which includes an input and output interface and a logic circuit, wherein the input and output interface is used to obtain input information and/or output information; the logic circuit is used to execute the method in any of the above method embodiments, and process and/or generate output information based on the input information.
  • An embodiment of the present application provides a communication system, including a first terminal, a second terminal and a network device in the information transmission method of the embodiment of the present application.
  • the present application also provides a computer-readable storage medium on which a computer program for implementing the method in the above method embodiment is stored.
  • the computer program When the computer program is run on a computer, the computer can implement the method in the above method embodiment.
  • An embodiment of the present application further provides a computer program product, which includes a computer program code.
  • a computer program product which includes a computer program code.
  • An embodiment of the present application also provides a chip, including a processor, wherein the processor is connected to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the chip executes the method in the above method embodiment.
  • a and/or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this article generally indicates that the objects associated before and after are in an "or” relationship; the term “at least one” in this application can mean “one” and "two or more”.
  • A, B and C can represent seven situations: A exists alone, B exists alone, C exists alone, A and B exist at the same time, A and C exist at the same time, C and B exist at the same time, and A, B and C exist at the same time.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to execute the present application. All or part of the steps of the method described in each embodiment.
  • the aforementioned storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

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Abstract

本申请提供了一种信息传输的方法和装置，能够提高侧行链路的信息传输的可靠性。该方法包括：第一终端接收来自网络设备的配置信息，配置信息包括第一连续DTX门限值和第二连续DTX门限值；第一终端利用第一载波组中的载波，向第二终端发送第一信息；第一终端利用第二载波组中的载波，向第二终端发送第二信息；若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，则停止利用第一载波组传输信息；和/或，若第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则停止利用第二载波组传输信息。

Description

信息传输的方法和装置
本申请要求于2022年10月27日提交中华人民共和国知识产权局、申请号为202211323013.3、发明名称为“信息传输的方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，并且更具体地，涉及一种信息传输的方法和装置。
背景技术
在无线通信系统中，终端与终端之间可以通过网络设备进行数据通信，也可以不借助网络设备，直接进行终端与终端之间的通信。终端与终端之间的接口称为PC5接口，类似于终端与基站之间的Uu接口。终端与终端之间的链路称为侧行链路(sidelink，SL)。终端与终端之间可以通过侧行链路直接进行数据传输，而不需要经过网络设备，这样可以有效地降低通信时延。
侧行链路上支持单播通信、组播通信和广播通信。在单播通信中，只能是建立了单播连接的两个终端之间才能进行单播通信。侧行链路上单播通信和组播通信都支持混合自动重传请求(hybrid automatic repeat request，HARQ)反馈。
目前，在基于HARQ反馈的SL无线链路失败(radio link failure，RLF)检测(HARQ-based SL RLF detection)机制中，终端被配置一个最大连续非连续发射(discontinuous transmission，DTX)配置参数(sl-maxNumConsecutiveDTX)来基于HARQ反馈确定SL RLF，终端会为每个单播连接维护一个用于记录连续DTX次数的计数器；当终端针对一个单播连接检测到的连续DTX次数达到sl-maxNumConsecutiveDTX，会触发该单播连接的SL RLF。
SL载波可以分为低频载波和高频载波，终端为每个单播连接记录一个连续DTX计数，不能区分出低频载波和高频载波的通信链路状态。SL载波也可以分为授权载波和非授权载波，终端为每个单播连接记录一个连续DTX计数不能区分出授权载波和非授权载波的通信链路状态。SL载波还可以分为主载波和辅载波，终端为每个单播连接记录一个连续DTX计数不能区分出主载波和辅载波的通信链路状态。
发明内容
本申请提供了一种信息传输的方法和装置，能够提高侧行链路的信息传输的可靠性。
第一方面，提供一种信息传输的方法，该方法可以由终端侧的芯片或芯片系统执行。该方法用于第一终端与第二终端通过侧行链路进行单播通信，该方法包括：所述第一终端接收来自网络设备的配置信息，所述配置信息包括第一连续非连续发射DTX门限值和第二连续DTX门限值，所述第一连续DTX门限值与第一载波组相关联，所述第二连续DTX门限值与第二载波组相关联；所述第一终端利用所述第一载波组中的载波，向所述第二终端发送第一信息；所述第一终端利用所述第二载波组中的载波，向所述第二终端发送第二信息；若所述第一终端连续未检测到所述第一信息对应的第一混合自动重传请求HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则停止利用所述第一载波组传输信息；和/或，若所述第一终端连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则停止利用所述第二载波组传输信息。
基于上述技术方案，第一终端记录利用第一载波组中的载波向第二终端发送第一信息的过程中连续未检测到的第一HARQ反馈消息的次数，并记录利用第二载波组中的载波向第二终端发送第二信息的过程中连续未检测到的第二HARQ反馈消息的次数。若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数小于第二连续DTX门限值，则停止利用第一载波组传输信息，可以继续利用第二载波组传输信息。若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数小于第一连续DTX门限值，第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则停止利用第二载波组传输信息，可以继续利用第一载波组传输信息。相比于针对 所有的载波记录一个numConsecutiveDTX且配置一个连续DTX门限值的方案，本申请实施例的技术方案能够提高侧行链路的信息传输的可靠性。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，且所述第一终端连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则所述第一终端释放所述第一终端与所述第二终端之间的单播连接。
结合第一方面，在第一方面的某些实现方式中，所述第一载波组包括低频载波，所述第二载波组包括高频载波；或者，所述第一载波组包括授权频谱载波，所述第二载波组包括非授权频谱载波。
结合第一方面，在第一方面的某些实现方式中，所述第二连续DTX门限值大于所述第一连续DTX门限值。
在第一载波组包括低频载波，第二载波组包括高频载波的情况下，高频载波的通信距离较短，利用高频载波传输信息失败的概率更大，因此，第二连续DTX门限值大于第一连续DTX门限值，可以提高利用高频载波传输信息的可靠性。
在第一载波组包括授权频谱载波，第二载波组包括非授权频谱载波的情况下，利用非授权频谱载波传输信息，发送资源碰撞的概率更大，传输信息失败的次数更多，因此，第二连续DTX门限值大于第一连续DTX门限值，可以提高利用非授权频谱载波传输信息的可靠性。
结合第一方面，在第一方面的某些实现方式中，所述第一载波组包括主载波，所述第二载波组包括辅载波。
结合第一方面，在第一方面的某些实现方式中，所述若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则所述第一终端停止利用所述第一载波组传输信息，包括：若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则所述第一终端停止利用所述第一载波组和所述第二载波组传输信息。
在第一载波组包括主载波，第二载波组包括辅载波的情况下，由于主载波用于发送控制信令和数据，辅载波用于发送数据，利用辅载波发送数据的PSSCH资源需要通过主载波调度，若停止利用主载波组传输信息，则也无法使用辅载波传输信息。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则所述第一终端释放所述第一终端与所述第二终端之间的单播连接。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则向所述网络设备发送第一指示信息，所述第一指示信息用于指示所述第一载波组失效。可选的，若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则向所述第二终端发送第二指示信息，所述第二指示信息用于指示所述第一载波组失效。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：若所述第一终端连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则向所述网络设备发送第一指示信息，所述第一指示信息用于指示所述第二载波组失效。可选的，若所述第一终端连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则向所述第二终端发送第二指示信息，所述第二指示信息用于指示所述第二载波组失效。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，且所述第一终端连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则向所述网络设备发送第一指示信息，所述第一指示信息用于指示所述第一载波组和所述第二载波组失效。可选的，若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，且所述第一终端连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则向所述第二终端发送第二指示信息，所述第二指示信息用于指示所述第一载波组和所述第二载波组失效。
结合第一方面，在第一方面的某些实现方式中，所述配置信息还包括第三连续DTX门限值和第四 连续DTX门限值，所述第三连续DTX门限值与第三载波组相关联，所述第四连续DTX门限值与第四载波组相关联；所述方法还包括：所述第一终端利用所述第三载波组中的载波，向所述第二终端发送第三信息；所述第一终端利用所述第四载波组中的载波，向所述第二终端发送第四信息；若所述第一终端连续未检测到所述第三信息对应的第三HARQ反馈消息的次数大于或等于所述第三连续DTX门限值，则所述第一终端停止利用所述第三载波组传输信息；和/或，若所述第一终端连续未检测到所述第四信息对应的第四HARQ反馈消息的次数大于或等于所述第四连续DTX门限值，则所述第一终端停止利用所述第四载波组传输信息。
基于上述技术方案，第一终端记录利用第一载波组中的载波向第二终端发送第一信息的过程中连续未检测到的第一HARQ反馈消息的次数，记录利用第二载波组中的载波向第二终端发送第二信息的过程中连续未检测到的第二HARQ反馈消息的次数，记录利用第三载波组中的载波向第二终端发送第三信息的过程中连续未检测到的第三HARQ反馈消息的次数，且记录利用第四载波组中的载波向第二终端发送第四信息的过程中连续未检测到的第四HARQ反馈消息的次数。若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，则停止利用第一载波组传输信息。若第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则停止利用第二载波组传输信息。若第一终端连续未检测到第三信息对应的第三HARQ反馈消息的次数大于或等于第三连续DTX门限值，则停止利用第三载波组传输信息。若第一终端连续未检测到第四信息对应的第四HARQ反馈消息的次数大于或等于第四连续DTX门限值，则停止利用第四载波组传输信息。相比于针对所有的载波记录一个numConsecutiveDTX且配置一个连续DTX门限值的方案，本申请实施例的技术方案能够提高侧行链路的信息传输的可靠性。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，所述第一终端连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，所述第一终端连续未检测到所述第三信息对应的第三HARQ反馈消息的次数大于或等于所述第三连续DTX门限值，且所述第一终端连续未检测到所述第四信息对应的第四HARQ反馈消息的次数大于或等于所述第四连续DTX门限值，则所述第一终端释放所述第一终端与所述第二终端之间的单播连接。
结合第一方面，在第一方面的某些实现方式中，所述第一载波组和所述第二载波组包括授权频谱载波，所述第三载波组和所述第四载波组包括非授权频谱载波，所述第一载波组和所述第三载波组包括低频载波，所述第二载波组和所述第四载波组包括高频载波。
第二方面，提供了一种通信装置，该装置可以应用于第一方面所述的第一终端中，该装置与第二终端通过侧行链路进行单播通信，该装置包括：收发单元，用于接收来自网络设备的配置信息，所述配置信息包括第一连续非连续发射DTX门限值和第二连续DTX门限值，所述第一连续DTX门限值与第一载波组相关联，所述第二连续DTX门限值与第二载波组相关联；所述收发单元还用于，利用所述第一载波组中的载波，向所述第二终端发送第一信息；所述收发单元还用于，利用所述第二载波组中的载波，向所述第二终端发送第二信息；处理单元，用于若所述装置连续未检测到所述第一信息对应的第一混合自动重传请求HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则停止利用所述第一载波组传输信息；和/或，若所述装置连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则停止利用所述第二载波组传输信息。
结合第二方面，在第二方面的某些实现方式中，所述处理单元还用于，若所述装置连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，且所述装置连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则释放所述装置与所述第二终端之间的单播连接。
结合第二方面，在第二方面的某些实现方式中，所述第一载波组包括低频载波，所述第二载波组包括高频载波；或者，所述第一载波组包括授权频谱载波，所述第二载波组包括非授权频谱载波。
结合第二方面，在第二方面的某些实现方式中，所述第二连续DTX门限值大于所述第一连续DTX门限值。
结合第二方面，在第二方面的某些实现方式中，所述第一载波组包括主载波，所述第二载波组包括辅载波。
结合第二方面，在第二方面的某些实现方式中，所述处理单元具体用于，若所述装置连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则停止利用所述第一载波组和所述第二载波组传输信息。
结合第二方面，在第二方面的某些实现方式中，所述处理单元还用于，若所述装置连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则释放所述装置与所述第二终端之间的单播连接。
结合第二方面，在第二方面的某些实现方式中，所述配置信息还包括第三连续DTX门限值和第四连续DTX门限值，所述第三连续DTX门限值与第三载波组相关联，所述第四连续DTX门限值与第四载波组相关联；所述收发单元还用于，利用所述第三载波组中的载波，向所述第二终端发送第三信息；所述收发单元还用于，利用所述第四载波组中的载波，向所述第二终端发送第四信息；所述处理单元还用于，若连续未检测到所述第三信息对应的第三HARQ反馈消息的次数大于或等于所述第三连续DTX门限值，则停止利用所述第三载波组传输信息；和/或，若连续未检测到所述第四信息对应的第四HARQ反馈消息的次数大于或等于所述第四连续DTX门限值，则停止利用所述第四载波组传输信息。
结合第二方面，在第二方面的某些实现方式中，所述处理单元还用于，若所述装置连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，所述装置连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，所述装置连续未检测到所述第三信息对应的第三HARQ反馈消息的次数大于或等于所述第三连续DTX门限值，且所述装置连续未检测到所述第四信息对应的第四HARQ反馈消息的次数大于或等于所述第四连续DTX门限值，则释放所述装置与所述第二终端之间的单播连接。
结合第二方面，在第二方面的某些实现方式中，所述第一载波组和所述第二载波组包括授权频谱载波，所述第三载波组和所述第四载波组包括非授权频谱载波，所述第一载波组和所述第三载波组包括低频载波，所述第二载波组和所述第四载波组包括高频载波。
第三方面，提供一种通信装置，包括：处理器和存储器，所述存储器用于存储计算机程序，所述处理器用于执行所述存储器中存储的计算机程序，以使得所述通信装置执行如第一方面或第一方面任意可能的实现方式中的方法。
第四方面，提供了一种通信系统，包括：第一方面所述方法中的第一终端、第二终端和网络设备。
第五方面，提供了一种计算机可读存储介质，所述计算机可读介质存储有计算机程序；所述计算机程序在计算机上运行时，使得所述计算机执行上述第一方面中任一种可能实现方式中的方法。
第六方面，提供一种计算机程序产品，包括计算机程序，所述计算机程序被计算机执行时，使得通信装置实现上述第一方面中任一种可能实现方式中的方法。
上述第二方面至第六方面提供的方案，用于实现或配合实现上述第一方面提供的方法，因此能够与第一方面达到相同或相应的有益效果，此处不再进行赘述。
附图说明
图1是终端与终端之间通过PC5接口直接通信的示意图。
图2是基于非授权频谱进行上行传输的示意性流程交互图。
图3是PSSCH和PSFCH在时域上的关系图。
图4是利用SL非授权频谱通信的PSFCH传输的示意性流程交互图。
图5是触发SL RLF流程图。
图6是本申请实施例适用的系统架构示意图。
图7是本申请实施例提出的一种信息传输的方法的示意性流程交互图。
图8是本申请实施例的信息传输的方法的一种示例的示意性流程交互图。
图9是本申请实施例的信息传输的方法的一种示例的示意性流程交互图。
图10是本申请实施例的信息传输的方法的一种示例的示意性流程交互图。
图11是本申请实施例的信息传输的方法的一种示例的示意性流程交互图。
图12是本申请实施例的一种通信装置的示意性框图。
图13是本申请实施例的另一种通信装置的示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例可以应用于各种通信系统，例如侧行通信系统(sidelink communication)、车联通信(vehicle to everything，V2X)系统、无线局域网系统(wireless local area network，WLAN)、窄带物联网系统(narrow band-internet of things，NB-IoT)、全球移动通信系统(global system for mobile communications，GSM)、增强型数据速率GSM演进系统(enhanced data rate for gsm evolution，EDGE)、宽带码分多址系统(wideband code division multiple access，WCDMA)、码分多址2000系统(code division multiple access，CDMA2000)、时分同步码分多址系统(time division-synchronization code division multiple access，TD-SCDMA)，长期演进系统(long term evolution，LTE)、卫星通信、第五代(5th generation，5G)系统、第六代(6th generation，6G)系统、授权频谱上的通信、非授权频谱上的通信或者将来出现的新的通信系统等。
本申请实施例中所涉及到的终端设备可以为包括无线收发功能、且可以为用户提供通讯服务的设备或者芯片或者模块。具体地，终端设备可以为车联通信(vehicle to everything，V2X)系统中的设备、设备对设备(device to device，D2D)系统中的设备、机器类型通信(machine type communication，MTC)系统中的设备、侧行链路通信中的设备等。可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备。终端可以是移动台(mobile station，MS)、用户单元(subscriber unit)、用户设备(user equipment,UE)、蜂窝电话(cellular phone)、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handset)、膝上型电脑(laptop computer)、机器类型通信(machine type communication，MTC)终端，5G网络或5G之后的网络中的终端设备或未来演进的公共陆地移动网络(public land mobile network，PLMN)中的终端设备，具备扩展现实(extended reality，XR),虚拟现实(virtual reality，VR)功能的芯片或者设备或者模块等，对此本申请不做限定。
本申请实施例中所涉及到的网络设备主要指基站，也称为无线接入点，收发站，中继站，小区，收发点，演进型基站，新一代基站，路边站点单元(road site unit，RSU)等，本申请实施例对此不做限定。
在无线通信系统中，终端与终端之间可以通过网络设备进行数据通信，也可以不借助网络设备，直接进行终端与终端之间的通信。终端与终端之间的接口称为PC5接口，类似于终端与基站之间的Uu接口。终端与终端之间的链路称为侧行链路，SL通信的一个典型应用场景为V2X。在V2X中，每个车为一个终端，终端与终端之间可以通过侧行链路直接进行数据传输，而不需要经过网络设备，这样可以有效地降低通信时延。图1为终端与终端之间通过PC5接口直接通信的示意图。
侧行链路上支持单播通信、组播通信和广播通信。本申请实施例涉及单播通信。
为了方便对本申请实施例的理解，对与本申请实施例相关的技术方案进行简单介绍。
(1)单播通信
类似于终端与基站之间建立无线资源控制(radio resource control，RRC)连接之后进行的数据通信，需要两个终端之间先建立单播连接。在两个终端建立单播连接之后，两个终端可以基于协商的标识进行数据通信，该数据可以是加密的，也可以是不加密的。在单播通信中，只能是建立了单播连接的两个终端之间才能进行单播通信。
在单播通信中，发送终端在发送数据时会将源标识和目的标识一起发送给接收终端，其中，源标识是发送终端自己分配的，目的标识是接收终端为该单播连接分配的标识。
侧行链路上单播通信和组播通信都支持HARQ反馈，HARQ反馈是接收终端在物理侧行反馈信道(physical sidelink feedback channel，PSFCH)上进行反馈的。单播通信时的HARQ反馈方式为，发送终端向接收终端发送数据，若接收终端成功解码该数据，则反馈肯定确认(acknowledgement，ACK)消息给发送终端；若接收终端没有成功解码该数据，则反馈否定确认(negative acknowledgement，NACK)消息给发送终端。
(2)侧行链路控制信息(sidelink control information，SCI)格式
NR侧行通信中，SCI包括第一级SCI(first stage SCI)和第二级SCI(second stage SCI)，其中， 第一级SCI承载于物理侧行控制信道(physical sidelink control channel，PSCCH)，第二级SCI承载于物理侧行共享信道(physical sidelink shared channel，PSSCH)。第一级SCI会指示PSSCH的时频域资源，第二级SCI会指示HARQ反馈支持“enabled”还是“disabled”。HARQ反馈支持“enabled”，可以理解为，接收终端需要向发送终端发送反馈消息；HARQ反馈支持“disabled”，可以理解为，接收终端不需要发送反馈消息。本申请实施例中第二级SCI指示HARQ反馈支持“enabled”。
(3)非授权频谱和先听后说(listen-before-talk，LBT)技术
终端使用的频谱资源分为授权频谱和非授权频谱。授权频谱只能让某一些机构或运营商使用；非授权频谱为共享频谱，不同的运营商/机构都可以使用。为了使用非授权频谱的公平性，终端和网络设备在发送数据之前，需要进行LBT过程，LBT过程可以理解为信道接入过程。
一般地，LBT是以信道的粒度进行的，例如带宽为20MHz的信道。通信设备在第一信道上发送信号(数据信号)之前，可以先检测该第一信道是否空闲，例如，是否检测到附近的通信设备正在占用该第一信道发送信号，这一检测过程可以称为空闲信道评估(clear channel assessment，CCA)过程或者信道接入过程。具体的，信道接入过程包括第一类型的信道接入过程和第二类型的信道接入过程。本申请实施例中的通信设备可以是终端，也可以是网络设备。
第一类型的信道接入过程可以称为基于固定时长的信道接入过程。针对一定的带宽，通信设备在固定时长内进行接收信号的能量检测，若接收信号的能量小于或等于第一预设门限，则认为信道空闲，通信设备可以使用该空闲的信道传输数据；否则，通信设备认为信道忙碌，通信设备不使用该忙碌的信道传输数据。
第二类型的信道接入过程可以称为基于回退的信道接入过程。针对一定带宽，定义一个窗口，该窗口定义了对接收信号进行能量检测的时隙数量的取值范围，通信设备从该取值范围内随机选择一个数值A，通信设备通过能量检测确定至少A个时隙空闲之后，则认为信道空闲，从而通信设备可以使用该空闲的信道传输数据；否则，通信设备认为信道忙碌，通信设备不使用该忙碌的信道传输数据。具体地，若通信设备在至少A个时隙中每个时隙内的固定时长内接收到的信号的能量小于或等于第二预设门限，则认为信道空闲。其中，第一预设门限和第二预设门限可以是预定义的，第一预设门限和第二预设门限之间没有限制关系，第一预设门限和第二预设门限可以相同、也可以不相同。本申请实施例对此不做限定。
在执行信道接入过程时可以得到两种结果：信道接入过程完成和信道接入过程未完成。信道接入过程完成可以称为LBT成功，信道接入过程未完成可以称为LBT失败。其中，在用于数据传输的时频资源中有多个时域起始位置，若在任意时域起始位置之前确定信道空闲，则可以认为信道接入过程完成；若在所有时域起始位置之前都确定信道忙碌，则可以认为信道接入过程未完成。
总之，在基于授权频谱工作的场景中，基站为终端调度上行资源后，终端可以直接使用该上行资源进行上行传输；而在基于非授权频谱工作的场景中，基站为终端调度上行资源之后，终端需要对该上行资源进行LBT，只有在LBT成功之后，才可以使用该上行资源进行上行传输。图2为基于非授权频谱进行上行传输的示意性流程交互图。应理解，如果终端对该上行资源进行LBT，发生LBT失败，则无法使用该上行资源。
(4)载波聚合(carrier aggregation，CA)
为进一步的提高通信系统的频谱效率和用户吞吐量，LTE后续演进(LTE-advanced，LTE-A)的标准被制定，其中载波聚合作为一种新技术被引入到LTE-A中。载波聚合的意思是终端可以同时使用多个小区(载波)进行上下行通信，从而支持高速数据传输。在这多个小区中，其中一个小区是主小区(primary cell，PCell)，其他是小区是辅小区(secondary cell，SCell)。
在终端与基站通信的场景中，使用的频谱资源还可以分为低频(FR1)频谱和高频(FR2)频谱。不同于低频信号，高频信号的频率高、衰减快，覆盖范围有限。基站可以利用窄波束的方法将发射能量聚合到一个方向，从而增大传输距离，同时利用时分扫描的方法扩大发送方向。高频载波可以进一步被区分为FR2-1和FR2-2两种类型的载波；具体来说，FR2-2的载波会比FR2-1的载波处在更高的频带上。
在载波聚合上，可以根据不同载波承载的功能区分为主载波和辅载波。例如，主载波用于发送控制信令和数据，例如PC5-RRC消息、SCI信令等；辅载波主要用于发送数据。
从频谱管控上考虑，频谱可以分为授权频谱和非授权频谱。
(5)SL资源的获取
终端获取SL资源的方式有两种，分别称为模式1(mode 1)和模式2(mode 2)。工作在mode 1时，终端从基站获取SL资源，具体地，基站可以通过下行控制信息(downlink control information，DCI)给终端调度SL资源，或者通过RRC消息给终端配置SL配置授权(configured grant)。工作在Mode2时，终端可以从基站接收SL资源池的配置信息，或者从预配置中获取SL资源池的配置信息，然后在SL资源池中选择SL资源进行发送。具体地，终端在SL资源池中选择SL资源可以是随机选择的，或者基于监听(sensing)或者部分监听(partial sensing)的结果进行选择的。
(6)SL传输和HARQ反馈
SL资源授权(SL grant)可以是基站调度或终端从配置的资源池中选择获取的。SL grant是用来确定一组PSCCH时域(duration)资源和一组PSSCH duration资源。PSFCH资源不需要终端事先获取SL grant，具体的PSFCH资源是发送终端根据PSSCH所在资源位置映射出来的。具体的，发送终端在PSSCH的最后一个时隙(slot)结束间隔sl-MinTimeGapPSFCH之后的第一个包括PSFCH资源的slot上开始传输PSFCH，图3为PSSCH和PSFCH在时域上的关系图。其中，sl-MinTimeGapPSFCH是在资源池中配置的，具体可以是2个slots或者3个slots。
图4为利用SL非授权频谱通信的PSFCH传输的示意性流程交互图。发送终端向接收终端发送PSCCH和PSSCH之后，接收终端根据PSSCH资源的位置和资源池中配置的sl-MinTimeGapPSFCH确定PSFCH资源，进一步的需要对该PSFCH资源进行LBT，当LBT成功后在该PSFCH资源上发送HARQ反馈消息给发送终端。对应地，发送终端也在相应的PSFCH资源上接收HARQ反馈消息。
目前，在HARQ-based SL RLF detection机制中，当发送终端针对一个单播连接检测到连续多次的DTX，会触发该单播连接的SL RLF。可以理解为，当发送终端连续多次在PSFCH接收机会上没有接收到对应的HARQ反馈消息时，会触发该单播连接的SL RLF。
图5为触发SL RLF流程图。首先，终端被配置一个sl-maxNumConsecutiveDTX来控制基于HARQ反馈的SL RLF检测，终端会为每个单播连接/PC5RRC连接维护一个用于记录连续DTX次数(numConsecutiveDTX)变量的计数器。当单播连接建立的时候或sl-maxNumConsecutiveDTX被配置/重配置的时候，SL HARQ实体会将每个单播连接的numConsecutiveDTX变量初始化为0。
SL HARQ实体针对每个PSFCH接收机会，如果在PSFCH接收机会上没有接收到HARQ反馈消息，则认为PSFCH接收缺失，将numConsecutiveDTX加1；如果numConsecutiveDTX达到sl-maxNumConsecutiveDTX，则向RRC层指示RLF。如果在PSFCH接收机会上接收到HARQ反馈，则重新初始化numConsecutiveDTX为0。
具体地，当发送终端在一个PSFCH接收机会上没有收到相应的HARQ反馈消息，记录一次SL DTX；若连续多次的SL DTX触发SL RLF，则发送终端认为链路质量较差，例如发送端与接收终端之间的距离超出了通信距离。根据R16TS38.321协议规定，针对一个PC5-RRC连接，发送终端使用一个HARQ实体维护numConsecutiveDTX/DTX计数器，当PSFCH接收机会上发生一次SL DTX，numConsecutiveDTX/DTX计数器就会加1；当numConsecutiveDTX大于或等于最大的连续DTX门限时，会触发PC5-RRC连接上的RLF。其中，触发PC5-RRC连接上的RLF，可以理解为，释放发送终端与接收终端之间的PC5-RRC连接。
发送终端针对单播连接维护一个连续DTX计数，并结合所配置的一个连续DTX门限值sl-maxNumConsecutiveDTX确定RLF，存在如下缺点。
(1)SL载波可以分为FR1载波和FR2载波。FR1载波和FR2载波对应的有效通信距离不同，终端为每个单播连接维护一个连续DTX计数并不能区分出FR1载波和FR2载波的通信链路状态。例如，若FR2载波的频带上发生多次连续DTX计数，触发了两个终端间单播连接上的RLF；而实际上FR1载波的通信链路状态是比较好的，但因为FR2载波的通信链路状态差的缘故导致发送终端不能再在FR1载波上发送数据。
(2)SL载波可以分为授权载波和非授权载波。不同于授权载波，非授权载波由于LBT失败会导致更多的DTX出现，终端为每个单播连接维护一个连续DTX计数并不能区分出授权载波和非授权载波的通信链路状态。例如，若非授权载波的频带上发生多次连续DTX计数，触发了两个终端间单播连接上的RLF；而实际上授权载波的通信链路状态是比较好的，但因为非授权载波的通信链路状态差的 缘故导致发送终端不能再在授权载波上发送数据。
(3)SL载波可以分为主载波和辅载波。不同于辅载波，主载波一般会承载SL通信的控制信令等。当主载波的通信链路状态差导致出现多次连续DTX时，控制信令的发送受到影响，辅载波上的数据收发也会受到影响甚至会停止；反之，辅载波的通信链路状态不会影响主载波上的控制信令的收发。终端为每个单播连接维护一个连续DTX计数并不能区分出主载波和辅载波的通信链路状态。例如，若辅载波的频带上发生多次连续DTX计数，触发了两个终端间单播连接上的RLF；而实际上主载波的通信链路状态是比较好的，但因为辅载波的通信链路状态差的缘故导致发送终端不能再在主载波上发送数据。
图6为本申请实施例适用的系统架构示意图。本申请实施例适用于sidelink通信场景。第一终端和第二终端可以利用授权载波和非授权载波通信，也可以利用低频载波和高频载波通信，还可以利用主载波和辅载波通信。进行sidelink通信的数据发送终端(第一终端)可以工作在mode 1，也可以工作在mode 2。发送终端和接收终端(第二终端)之间的通信方式是单播通信。
本申请实施例提出了一种信息传输的方法，能够提高侧行链路的信息传输的可靠性。如图7所示，出示了本申请实施例提出的一种信息传输的方法700的示意性流程交互图。本申请实施例适用于第一终端与第二终端通过侧行链路进行单播通信。本实施例中的网络设备可以为基站，第一终端可以称为发送终端，第二终端可以称为接收终端。
710，网络设备向第一终端发送配置信息，对应地，第一终端接收来自网络设备的配置信息。该配置信息包括第一连续DTX门限值和第二连续DTX门限值，第一连续DTX门限值与第一载波组相关联，第二连续DTX门限值与第二载波组相关联。可选的，配置信息包括系统信息块(system information block，SIB)信息。
第一终端记录第一载波组对应的第一numConsecutiveDTX的数值以及第二载波组对应的第二numConsecutiveDTX的数值；可以理解为，第一终端维护两个连续DTX计数器。其中，第一载波组对应的第一numConsecutiveDTX和第二载波组对应的第二numConsecutiveDTX的初始值为0。若第一终端记录的第一numConsecutiveDTX的数值大于或等于第一连续DTX门限值，则第一终端停止利用第一载波组传输信息。若第一终端记录的第二numConsecutiveDTX的数值大于或等于第二连续DTX门限值，则第一终端停止利用第二载波组传输信息。
可选的，第一连续DTX门限值与第二连续DTX门限值是相同的。可选的，第一连续DTX门限值与第二连续DTX门限值是不同的。本申请实施例对此不做限定。
720，第一终端利用第一载波组中的载波，向第二终端发送第一信息。对应地，第二终端接收来自第一终端的第一信息；若第二终端接收到来自第一终端的第一信息，则向第一终端发送第一信息对应的第一HARQ反馈消息，若第二终端没有接收到来自第一终端的第一信息，则不发送第一HARQ反馈消息。在第一终端向第二终端发送第一信息之后，第一终端检测第一信息对应的第一HARQ反馈消息。示例性地，第一信息包括第一数据。
第一终端利用第一载波组中的载波，向第二终端发送第一信息，可以理解为，第一终端利用第一载波组中的多个载波，向第二终端发送多个第一信息。
具体地，第一终端利用第一载波组中的载波在PSSCH上向第二终端发送第一信息。对应地，第二终端在PSSCH上接收来自第一终端的第一信息；若第二终端接收到第一信息，则根据PSSCH确定PSFCH，并在PSFCH上向第一设备发送第一HARQ反馈消息；若第二终端没有接收到第一信息，则不发送第一HARQ反馈消息。在第一终端向第二终端发送第一信息之后，第一终端在PSFCH上检测第一信息对应的第一HARQ反馈消息。
示例性地，第一终端利用第一载波组中的载波向第二终端发送第一个第一信息后，若没有检测到第一个第一信息对应的第一HARQ反馈消息，则第一终端将第一numConsecutiveDTX加1。第一终端利用第一载波组中的载波向第二终端发送第二个第一信息后，若检测到第二个第一信息对应的第一HARQ反馈消息，则第一终端将第一numConsecutiveDTX再加1；若没有检测到第二个第一信息对应的第一HARQ反馈消息，则第一终端将第一numConsecutiveDTX重新初始化为0。
730，第一终端利用第二载波组中的载波，向第二终端发送第二信息。对应地，第二终端接收来自第一终端的第二信息；若第二终端接收到来自第一终端的第二信息，则向第一终端发送第二信息对应 的第二HARQ反馈消息，若第二终端没有接收到来自第一终端的第二信息，则不发送第二HARQ反馈消息。在第一终端向第二终端发送第二信息之后，第一终端检测第二信息对应的第二HARQ反馈消息。示例性地，第二信息包括第二数据。
第一终端利用第二载波组中的载波，向第二终端发送第二信息，可以理解为，第一终端利用第二载波组中的多个载波，向第二终端发送多个第二信息。
具体地，第一终端利用第二载波组中的载波在PSSCH上向第二终端发送第二信息。对应地，第二终端在PSSCH上接收来自第一终端的第二信息；若第二终端接收到第二信息，则根据PSSCH确定PSFCH，并在PSFCH上向第一设备发送第二HARQ反馈消息；若第二终端没有接收到第二信息，则不发送第二HARQ反馈消息。在第一终端向第二终端发送第二信息之后，第一终端在PSFCH上检测第二信息对应的第二HARQ反馈消息。
示例性地，第一终端利用第二载波组中的载波向第二终端发送第一个第二信息后，若没有检测到第一个第二信息对应的第二HARQ反馈消息，则第一终端将第二numConsecutiveDTX加1。第一终端利用第二载波组中的载波向第二终端发送第二个第二信息后，若检测到第二个第二信息对应的第二HARQ反馈消息，则第一终端将第二numConsecutiveDTX再加1；若没有检测到第二个第二信息对应的第二HARQ反馈消息，则第一终端将第二numConsecutiveDTX重新初始化为0。
应理解，步骤720和步骤730是可以同步进行的，步骤730也可以在步骤720之前进行，本申请实施例不做限定。
740，若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，则停止利用第一载波组传输信息；和/或，若第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则停止利用第二载波组传输信息。其中，第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数，可以理解为，第一终端记录的第一numConsecutiveDTX的数值。第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数，可以理解为，第一终端记录的第二numConsecutiveDTX的数值。
示例性地，若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，则停止利用第一载波组传输信息。可选的，若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，则第一终端向网络设备发送第一指示信息，该第一指示信息用于指示第一载波组失效。可选的，若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，则第一终端向第二终端发送第二指示信息，第二指示信息用于指示第一载波组失效。
示例性地，若第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则停止利用第二载波组传输信息。可选的，若第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则第一终端向网络设备发送第一指示信息，该第一指示信息用于指示第二载波组失效。可选的，若第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则第一终端向第二终端发送第二指示信息，第二指示信息用于指示第二载波组失效。
示例性地，若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，且第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则停止利用第一载波组和第二载波组传输信息。可选的，若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，且第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则第一终端向网络设备发送第一指示信息，该第一指示信息用于指示第一载波组和第二载波组失效。可选的，若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，且第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则第一终端向第二终端发送第二指示信息，第二指示信息用于指示第一载波组和第二载波组失效。
可选的，若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，且第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则第一终端释放第一终端与第二终端之间的单播连接/PC5-RRC连接。
在本申请实施例提供的技术方案中，第一终端记录利用第一载波组中的载波向第二终端发送第一 信息的过程中连续未检测到的第一HARQ反馈消息的次数，并记录利用第二载波组中的载波向第二终端发送第二信息的过程中连续未检测到的第二HARQ反馈消息的次数。若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数小于第二连续DTX门限值，则停止利用第一载波组传输信息，可以继续利用第二载波组传输信息。若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数小于第一连续DTX门限值，第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则停止利用第二载波组传输信息，可以继续利用第一载波组传输信息。相比于针对所有的载波记录一个numConsecutiveDTX且配置一个连续DTX门限值的方案，本申请实施例的技术方案能够提高侧行链路的信息传输的可靠性。
在具体的实现方式一中，第一载波组包括低频载波，所述第二载波组包括高频载波。第一载波组可以称为FR1载波组，第二载波组可以称为FR2载波组。
可选的，FR2载波组对应的第二连续DTX门限值大于FR1载波组对应的第一连续DTX门限值。高频载波的通信距离较短，利用高频载波传输信息失败的概率更大，因此，第二连续DTX门限值大于第一连续DTX门限值，可以提高利用高频载波传输信息的可靠性。
可选的，FR2载波组还可以进一步分为FR2-1和FR2-2两个高频载波组。该情况下，第一终端维护三个连续DTX计数器。第一终端记录FR1载波组对应的第一numConsecutiveDTX的数值、FR2-1载波组对应的第二numConsecutiveDTX的数值以及FR2-2载波组对应的第三numConsecutiveDTX的数值。若第一终端记录的第一numConsecutiveDTX的数值大于或等于第一连续DTX门限值，则第一终端停止利用FR1载波组传输信息。若第一终端记录的第二numConsecutiveDTX的数值大于或等于第二连续DTX门限值，则第一终端停止利用FR2-1载波组传输信息。若第一终端记录的第三numConsecutiveDTX的数值大于或等于第二连续DTX门限值，则第一终端停止利用FR2-2载波组传输信息。
在具体的实现方式二中，第一载波组包括授权频谱载波，第二载波组包括非授权频谱载波。第一载波组可以称为授权频谱载波组，第二载波组可以称为非授权频谱载波组。
可选的，非授权频谱载波组对应的第二连续DTX门限值大于授权频谱载波组对应的第一连续DTX门限值。利用非授权频谱载波传输信息，发送资源碰撞的概率更大，传输信息失败的次数更多，因此，第二连续DTX门限值大于第一连续DTX门限值，可以提高利用非授权频谱载波传输信息的可靠性。
在具体的实现方式三中，第一载波组包括主载波，第二载波组包括辅载波。第一载波组可以称为主载波组，第二载波组可以称为辅载波组。主载波组包括一个载波，辅载波组包括一个或多个载波。
可选的，第一终端利用第一载波组中载波向第二终端发送第一信息之后，若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，则第一终端停止利用第一载波组和第二载波组传输信息。可以理解为，第一终端利用主载波向第二终端发送第一信息之后，若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，则第一终端停止利用主载波组和辅载波组传输信息。由于主载波用于发送控制信令和数据，辅载波用于发送数据，利用辅载波发送数据的PSSCH资源需要通过主载波调度，若停止利用主载波组传输信息，则也无法使用辅载波传输信息。
可选的，第一终端利用第一载波组中载波向第二终端发送第一信息之后，若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，则第一终端释放第一终端与第二终端之间的单播连接。
可选的，网络设备向第一终端发送的配置信息中还包括第三连续DTX门限值和第四连续DTX门限值，第三连续DTX门限值与第三载波组相关联，第四连续DTX门限值与第四载波组相关联。
第一终端不仅记录第一载波组对应的第一numConsecutiveDTX和第二载波组对应的第二numConsecutiveDTX，第一终端还记录第三载波组对应的第三numConsecutiveDTX和第四载波组对应的第四numConsecutiveDTX。可以理解为，第一终端维护四个连续DTX计数器。其中，第三numConsecutiveDTX和第四numConsecutiveDTX的初始值也为0。若第一终端记录的第一numConsecutiveDTX的数值大于或等于第一连续DTX门限值，则第一终端停止利用第一载波组传输信 息。若第一终端记录的第二numConsecutiveDTX的数值大于或等于第二连续DTX门限值，则第一终端停止利用第二载波组传输信息。若第一终端记录的第三numConsecutiveDTX的数值大于或等于第三连续DTX门限值，则第一终端停止利用第三载波组传输信息。若第一终端记录的第四numConsecutiveDTX的数值大于或等于第四连续DTX门限值，则第一终端停止利用第四载波组传输信息。相比于针对所有的载波记录一个numConsecutiveDTX且配置一个连续DTX门限值的方案，本申请实施例的技术方案能够提高侧行链路的信息传输的可靠性。
可选的，第一连续DTX门限值、第二连续DTX门限值、第三连续DTX门限值和第四连续DTX门限值可以是相同的、也可以是不同的。本申请实施例对此不做限定。
可选的，第一终端利用第三载波组中的载波，向第二终端发送第三信息。对应地，第二终端接收来自第一终端的第三信息；若第二终端接收到来自第一终端的第三信息，则向第一终端发送第三信息对应的第三HARQ反馈消息，若第二终端没有接收到来自第一终端的第三信息，则不发送第三HARQ反馈消息。在第一终端向第二终端发送第三信息之后，第一终端检测第三信息对应的第三HARQ反馈消息。示例性地，第三信息包括第三数据。
可选的，第一终端利用第四载波组中的载波，向第二终端发送第四信息。对应地，第二终端接收来自第一终端的第四信息；若第二终端接收到来自第一终端的第四信息，则向第一终端发送第四信息对应的第四HARQ反馈消息，若第二终端没有接收到来自第一终端的第四信息，则不发送第四HARQ反馈消息。在第一终端向第二终端发送第四信息之后，第一终端检测第四信息对应的第四HARQ反馈消息。示例性地，第四信息包括第四数据。
若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，则停止利用第一载波组传输信息；和/或，若第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，则停止利用第二载波组传输信息；和/或，若第一终端连续未检测到第三信息对应的第三HARQ反馈消息的次数大于或等于第三连续DTX门限值，则第一终端停止利用第三载波组传输信息；和/或，若第一终端连续未检测到第四信息对应的第四HARQ反馈消息的次数大于或等于第四连续DTX门限值，则第一终端停止利用第四载波组传输信息。其中，第一终端连续未检测到第三信息对应的第三HARQ反馈消息的次数，可以理解为，第一终端记录的第三numConsecutiveDTX的数值。第一终端连续未检测到第四信息对应的第四HARQ反馈消息的次数，可以理解为，第一终端记录的第四numConsecutiveDTX的数值。
可选的，若第一终端连续未检测到第一信息对应的第一HARQ反馈消息的次数大于或等于第一连续DTX门限值，第一终端连续未检测到第二信息对应的第二HARQ反馈消息的次数大于或等于第二连续DTX门限值，第一终端连续未检测到第三信息对应的第三HARQ反馈消息的次数大于或等于第三连续DTX门限值，且第一终端连续未检测到第四信息对应的第四HARQ反馈消息的次数大于或等于第四连续DTX门限值，则第一终端释放第一终端与第二终端之间的单播连接。
在具体的实现方式中，第一载波组和第二载波组包括授权频谱载波，第三载波组和第四载波组包括非授权频谱载波，第一载波组和第三载波组包括低频载波，第二载波组和第四载波组包括高频载波。可以理解为，第一载波组中的载波为授权频谱载波中的低频载波，第二载波组中的载波为授权频谱载波中的高频载波，第三载波组中的载波为非授权频谱载波中的低频载波，第四载波组中的载波为非授权频谱载波中的高频载波。第一载波组可以称为授权频谱中的FR1载波组，第二载波组可以称为授权频谱中的FR2载波组，第三载波组可以称为非授权频谱中的FR1载波组，第二载波组可以称为非授权频谱中的FR2载波组。
下面将结合具体的示例，对本申请实施例的信息传输的方法的进行描述。下面的具体示例中，发送终端为上述第一终端，接收终端为上述第二终端。
图8为本申请实施例的信息传输的方法的一种示例的示意性流程交互图。该示例中发送终端维护FR1载波组对应的连续DTX计数器以及FR2载波组对应的连续DTX计数器。可以理解为，发送终端记录FR1载波组对应的第一numConsecutiveDTX的数值以及FR2载波组对应的第二numConsecutiveDTX的数值。具体的步骤如下。
810，网络设备向发送终端发送配置信息或SIB信息，对应地，发送终端接收来自网络设备的配置信息或SIB信息。配置信息或SIB信息包括第一连续DTX门限值和第二连续DTX门限值。第一连续 DTX门限值与FR1载波组相关联，第二连续DTX门限值与FR2载波组相关联。
示例性地，网络设备向第一终端发送的配置信息或SIB信息包括sl-maxNumConsecutiveDTX_FR1字段和sl-maxNumConsecutiveDTX_FR2字段，sl-maxNumConsecutiveDTX_FR1字段指示第一连续DTX门限值，sl-maxNumConsecutiveDTX_FR2字段指示第二连续DTX门限值。该示例中，第一连续DTX门限值和第二连续DTX门限值可以是相同的、也可以是不同的。
示例性地，网络设备向第一终端发送的配置信息或SIB信息包括sl-maxNumConsecutiveDTX字段，第一连续DTX门限值和第二连续DTX门限值等于sl-maxNumConsecutiveDTX字段指示的连续DTX门限值。该示例中，第一连续DTX门限值和第二连续DTX门限值是相同的。
820，发送终端利用FR1载波组中的载波，向接收终端发送第一数据。发送终端利用FR2载波组中的载波，向接收终端发送第二数据。
830，接收终端接收来自发送终端的第一数据；若接收终端接收到来自发送终端的第一数据，则利用FR1载波组中的载波，向发送终端发送第一数据对应的第一HARQ反馈消息，若接收终端没有接收到来自发送终端的第一数据，则不发送第一HARQ反馈消息。
接收终端接收来自发送终端的第二数据；若接收终端接收到来自发送终端的第二数据，则利用FR2载波组中的载波，向发送终端发送第二数据对应的第二HARQ反馈消息，若接收终端没有接收到来自发送终端的第二数据，则不发送第二HARQ反馈消息。
840，发送终端向接收终端发送第一数据之后，检测第一数据对应的第一HARQ反馈消息；若发送终端未检测到第一数据对应的第一HARQ反馈消息，则将第一numConsecutiveDTX加1。
发送终端向接收终端发送第二数据之后，检测第二数据对应的第二HARQ反馈消息；若发送终端未检测到第二数据对应的第二HARQ反馈消息，则将第二numConsecutiveDTX加1。
应理解，发送终端利用FR1载波组中的多个载波，向接收终端发送多个第一数据；发送终端利用FR2载波组中的多个载波，向接收终端发送多个第二数据。发送终端记录FR1载波组对应的第一numConsecutiveDTX的数值以及FR2载波组对应的第二numConsecutiveDTX的数值。
850，若发送终端记录的第一numConsecutiveDTX的数值大于或等于第一连续DTX门限值，则发送终端停止利用FR1载波组传输信息/数据和控制信令。若发送终端记录的第二numConsecutiveDTX的数值大于或等于第二连续DTX门限值，则发送终端停止利用FR2载波组传输信息/数据和控制信令。其中，发送终端记录的第一numConsecutiveDTX的数值，可以理解为，发送终端连续未检测到第一数据对应的第一HARQ反馈消息的次数。发送终端记录的第二numConsecutiveDTX的数值，可以理解为，发送终端连续未检测到第二数据对应的第二HARQ反馈消息的次数。
可选的，若发送终端记录的第一numConsecutiveDTX的数值大于或等于第一连续DTX门限值，且发送终端记录的第二numConsecutiveDTX的数值大于或等于第二连续DTX门限值，则发送终端释放发送终端与接收终端之间的单播连接。
图9为本申请实施例的信息传输的方法的一种示例的示意性流程交互图。该示例中发送终端维护授权频谱载波组对应的连续DTX计数器以及非授权频谱载波组对应的连续DTX计数器。可以理解为，发送终端记录授权频谱载波组对应的第一numConsecutiveDTX的数值以及非授权频谱载波组对应的第二numConsecutiveDTX的数值。具体的步骤如下。
910，网络设备向发送终端发送配置信息或SIB信息，对应地，发送终端接收来自网络设备的配置信息或SIB信息。配置信息或SIB信息包括第一连续DTX门限值和第二连续DTX门限值。第一连续DTX门限值与授权频谱载波组相关联，第二连续DTX门限值与非授权频谱载波组相关联。
示例性地，网络设备向第一终端发送的配置信息或SIB信息包括sl-maxNumConsecutiveDTX_lic字段和sl-maxNumConsecutiveDTX_unlic字段，sl-maxNumConsecutiveDTX_lic字段指示第一连续DTX门限值，sl-maxNumConsecutiveDTX_unlic字段指示第二连续DTX门限值。该示例中，第一连续DTX门限值和第二连续DTX门限值可以是相同的、也可以是不同的。
示例性地，网络设备向第一终端发送的配置信息或SIB信息包括sl-maxNumConsecutiveDTX字段，第一连续DTX门限值和第二连续DTX门限值等于sl-maxNumConsecutiveDTX字段指示的连续DTX门限值。该示例中，第一连续DTX门限值和第二连续DTX门限值是相同的。
920，发送终端利用授权频谱载波组中的载波，向接收终端发送第一数据。发送终端利用非授权频谱载波组中的载波，向接收终端发送第二数据。
930，接收终端接收来自发送终端的第一数据；若接收终端接收到来自发送终端的第一数据，则利用授权频谱载波组中的载波，向发送终端发送第一数据对应的第一HARQ反馈消息；若接收终端没有接收到来自发送终端的第一数据，则不发送第一HARQ反馈消息。
接收终端接收来自发送终端的第二数据；若接收终端接收到来自发送终端的第二数据，则利用非授权频谱载波组中的载波，向发送终端发送第二数据对应的第二HARQ反馈消息；若接收终端没有接收到来自发送终端的第二数据，则不发送第二HARQ反馈消息。
940，发送终端向接收终端发送第一数据之后，检测第一数据对应的第一HARQ反馈消息；若发送终端未检测到第一数据对应的第一HARQ反馈消息，则将第一numConsecutiveDTX加1。
发送终端向接收终端发送第二数据之后，检测第二数据对应的第二HARQ反馈消息；若发送终端未检测到第二数据对应的第二HARQ反馈消息，则将第二numConsecutiveDTX加1。
应理解，发送终端利用授权频谱载波组中的多个载波，向接收终端发送多个第一数据；发送终端利用非授权频谱载波组中的多个载波，向接收终端发送多个第二数据。发送终端记录授权频谱载波组对应的第一numConsecutiveDTX的数值以及非授权频谱载波组对应的第二numConsecutiveDTX的数值。
950，若发送终端记录的第一numConsecutiveDTX的数值大于或等于第一连续DTX门限值，则发送终端停止利用授权频谱载波组传输信息/数据和控制信令。若发送终端记录的第二numConsecutiveDTX的数值大于或等于第二连续DTX门限值，则发送终端停止利用非授权频谱载波组传输信息/数据和控制信令。其中，发送终端记录的第一numConsecutiveDTX的数值，可以理解为，发送终端连续未检测到第一数据对应的第一HARQ反馈消息的次数。发送终端记录的第二numConsecutiveDTX的数值，可以理解为，发送终端连续未检测到第二数据对应的第二HARQ反馈消息的次数。
可选的，若发送终端记录的第一numConsecutiveDTX的数值大于或等于第一连续DTX门限值，且发送终端记录的第二numConsecutiveDTX的数值大于或等于第二连续DTX门限值，则发送终端释放发送终端与接收终端之间的单播连接。
图10为本申请实施例的信息传输的方法的一种示例的示意性流程交互图。该示例中发送终端维护主载波组对应的连续DTX计数器以及辅载波组对应的连续DTX计数器。可以理解为，发送终端记录主载波组对应的第一numConsecutiveDTX的数值以及辅载波组对应的第二numConsecutiveDTX的数值。具体的步骤如下。
1010，网络设备向发送终端发送配置信息或SIB信息，对应地，发送终端接收来自网络设备的配置信息或SIB信息。配置信息或SIB信息包括第一连续DTX门限值和第二连续DTX门限值。第一连续DTX门限值与主载波组相关联，第二连续DTX门限值与辅载波组相关联。
示例性地，网络设备向第一终端发送的配置信息或SIB信息包括sl-maxNumConsecutiveDTX_pcc字段和sl-maxNumConsecutiveDTX_scc字段，sl-maxNumConsecutiveDTX_pcc字段指示第一连续DTX门限值，sl-maxNumConsecutiveDTX_scc字段指示第二连续DTX门限值。该示例中，第一连续DTX门限值和第二连续DTX门限值可以是相同的、也可以是不同的。
示例性地，网络设备向第一终端发送的配置信息或SIB信息包括sl-maxNumConsecutiveDTX字段，第一连续DTX门限值和第二连续DTX门限值等于sl-maxNumConsecutiveDTX字段指示的连续DTX门限值。该示例中，第一连续DTX门限值和第二连续DTX门限值是相同的。
1020，发送终端利用主载波组中的载波，向接收终端发送第一数据。发送终端利用辅载波组中的载波，向接收终端发送第二数据。
1030，接收终端接收来自发送终端的第一数据；若接收终端接收到来自发送终端的第一数据，则利用主载波组中的载波，向发送终端发送第一数据对应的第一HARQ反馈消息，若接收终端没有接收到来自发送终端的第一数据，则不发送第一HARQ反馈消息。
接收终端接收来自发送终端的第二数据；若接收终端接收到来自发送终端的第二数据，则利用辅载波组中的载波，向发送终端发送第二数据对应的第二HARQ反馈消息，若接收终端没有接收到来自发送终端的第二数据，则不发送第二HARQ反馈消息。
1040，发送终端向接收终端发送第一数据之后，检测第一数据对应的第一HARQ反馈消息；若发送终端未检测到第一数据对应的第一HARQ反馈消息，则将第一numConsecutiveDTX加1。
发送终端向接收终端发送第二数据之后，检测第二数据对应的第二HARQ反馈消息；若发送终端未检测到第二数据对应的第二HARQ反馈消息，则将第二numConsecutiveDTX加1。
应理解，发送终端利用主载波组中的多个载波，向接收终端发送多个第一数据；发送终端利用辅载波组中的多个载波，向接收终端发送多个第二数据。发送终端记录主载波组对应的第一numConsecutiveDTX的数值以及辅载波组对应的第二numConsecutiveDTX的数值。
1050，若发送终端记录的第一numConsecutiveDTX的数值大于或等于第一连续DTX门限值，则发送终端停止利用主载波组和辅载波组传输信息/数据和控制信令。若发送终端记录的第二numConsecutiveDTX的数值大于或等于第二连续DTX门限值，则发送终端停止利用辅载波组传输信息/数据和控制信令。其中，发送终端记录的第一numConsecutiveDTX的数值，可以理解为，发送终端连续未检测到第一数据对应的第一HARQ反馈消息的次数。发送终端记录的第二numConsecutiveDTX的数值，可以理解为，发送终端连续未检测到第二数据对应的第二HARQ反馈消息的次数。
应理解，若发送终端记录的第二numConsecutiveDTX的数值大于或等于第二连续DTX门限值，但发送终端记录的第一numConsecutiveDTX的数值小于第一连续DTX门限值，则发送终端停止利用辅载波组传输信息/数据和控制信令，但可以继续利用主载波组传输信息/数据和控制信令。
可选的，若发送终端记录的第一numConsecutiveDTX的数值大于或等于第一连续DTX门限值，则发送终端释放发送终端与接收终端之间的单播连接。
可选的，若发送终端记录的第一numConsecutiveDTX的数值大于或等于第一连续DTX门限值，且发送终端记录的第二numConsecutiveDTX的数值大于或等于第二连续DTX门限值，则发送终端释放发送终端与接收终端之间的单播连接。
图11为本申请实施例的信息传输的方法的一种示例的示意性流程交互图。该示例中发送终端维护授权频谱载波的低频载波组对应的连续DTX计数器、授权频谱载波的高频载波组对应的连续DTX计数器、非授权频谱载波的低频载波组对应的连续DTX计数器、以及非授权频谱载波的高频载波组对应的连续DTX计数器。可以理解为，发送终端记录授权频谱载波的低频载波组对应的第一numConsecutiveDTX的数值、授权频谱载波的高频载波组对应的第二numConsecutiveDTX的数值、非授权频谱载波的低频载波组对应的第三numConsecutiveDTX的数值、以及非授权频谱载波的高频载波组对应的第四numConsecutiveDTX的数值。具体的步骤如下。
1110，网络设备向发送终端发送配置信息或SIB信息，对应地，发送终端接收来自网络设备的配置信息或SIB信息。配置信息或SIB信息包括第一连续DTX门限值、第二连续DTX门限值、第三连续DTX门限值和第四连续DTX门限值。第一连续DTX门限值与授权频谱载波的低频载波组相关联，第二连续DTX门限值与授权频谱载波的高频载波组相关联，第三连续DTX门限值与非授权频谱载波的低频载波组相关联，第四连续DTX门限值与非授权频谱载波的高频载波组相关联。
示例性地，网络设备向第一终端发送的配置信息或SIB信息包括sl-maxNumConsecutiveDTX_lic_FR1字段、sl-maxNumConsecutiveDTX_lic_FR2字段、sl-maxNumConsecutiveDTX_unlic_FR1字段和sl-maxNumConsecutiveDTX_unlic_FR2字段。sl-maxNumConsecutiveDTX_lic_FR1字段指示第一连续DTX门限值，sl-maxNumConsecutiveDTX_lic_FR2字段指示第二连续DTX门限值，sl-maxNumConsecutiveDTX_unlic_FR1字段指示第三连续DTX门限值，sl-maxNumConsecutiveDTX_unlic_FR2指示第四连续DTX门限值。该示例中，第一连续DTX门限值、第二连续DTX门限值、第三连续DTX门限值和第四连续DTX门限值可以是相同的、也可以是不同的。
示例性地，网络设备向第一终端发送的配置信息或SIB信息包括sl-maxNumConsecutiveDTX字段，第一连续DTX门限值、第二连续DTX门限值、第三连续DTX门限值和第四连续DTX门限值等于sl-maxNumConsecutiveDTX字段指示的连续DTX门限值。该示例中，第一连续DTX门限值、第二连续DTX门限值、第三连续DTX门限值和第四连续DTX门限值是相同的。
1120，发送终端利用授权频谱载波的低频载波组中的载波，向接收终端发送第一数据。发送终端利用授权频谱载波的高频载波组中的载波，向接收终端发送第二数据。发送终端利用非授权频谱载波的低频载波组中的载波，向接收终端发送第三数据。发送终端利用非授权频谱载波的高频载波组中的载波，向接收终端发送第四数据。
1130，接收终端接收来自发送终端的第一数据；若接收终端接收到来自发送终端的第一数据，则 利用授权频谱载波的低频载波组中的载波，向发送终端发送第一数据对应的第一HARQ反馈消息；若接收终端没有接收到来自发送终端的第一数据，则不发送第一HARQ反馈消息。
接收终端接收来自发送终端的第二数据；若接收终端接收到来自发送终端的第二数据，则利用授权频谱载波的高频载波组中的载波，向发送终端发送第二数据对应的第二HARQ反馈消息；若接收终端没有接收到来自发送终端的第二数据，则不发送第二HARQ反馈消息。
接收终端接收来自发送终端的第三数据；若接收终端接收到来自发送终端的第三数据，则利用非授权频谱载波的低频载波组中的载波，向发送终端发送第三数据对应的第三HARQ反馈消息；若接收终端没有接收到来自发送终端的第三数据，则不发送第三HARQ反馈消息。
接收终端接收来自发送终端的第四数据；若接收终端接收到来自发送终端的第四数据，则利用非授权频谱载波的高频载波组中的载波，向发送终端发送第四数据对应的第四HARQ反馈消息；若接收终端没有接收到来自发送终端的第四数据，则不发送第四HARQ反馈消息。
1140，发送终端向接收终端发送第一数据之后，检测第一数据对应的第一HARQ反馈消息；若发送终端未检测到第一数据对应的第一HARQ反馈消息，则将第一numConsecutiveDTX加1。
发送终端向接收终端发送第二数据之后，检测第二数据对应的第二HARQ反馈消息；若发送终端未检测到第二数据对应的第二HARQ反馈消息，则将第二numConsecutiveDTX加1。
发送终端向接收终端发送第三数据之后，检测第三数据对应的第三HARQ反馈消息；若发送终端未检测到第三数据对应的第三HARQ反馈消息，则将第三numConsecutiveDTX加1。
发送终端向接收终端发送第四数据之后，检测第四数据对应的第四HARQ反馈消息；若发送终端未检测到第四数据对应的第四HARQ反馈消息，则将第四numConsecutiveDTX加1。
应理解，发送终端利用授权频谱载波的低频载波组中的多个载波，向接收终端发送多个第一数据；发送终端利用授权频谱载波的高频载波组中的多个载波，向接收终端发送多个第二数据；发送终端利用非授权频谱载波的低频载波组中的多个载波，向接收终端发送多个第三数据；发送终端利用非授权频谱载波的高频载波组中的多个载波，向接收终端发送多个第四数据。发送终端记录授权频谱载波的低频载波组对应的第一numConsecutiveDTX的数值、授权频谱载波的高频载波组对应的第二numConsecutiveDTX的数值、非授权频谱载波的低频载波组对应的第三numConsecutiveDTX的数值、非授权频谱载波的高频载波组对应的第四numConsecutiveDTX的数值。
1150，若发送终端记录的第一numConsecutiveDTX的数值大于或等于第一连续DTX门限值，则发送终端停止利用授权频谱载波的低频载波组传输信息/数据和控制信令。若发送终端记录的第二numConsecutiveDTX的数值大于或等于第二连续DTX门限值，则发送终端停止利用授权频谱载波的高频载波组传输信息/数据和控制信令。若发送终端记录的第三numConsecutiveDTX的数值大于或等于第三连续DTX门限值，则发送终端停止利用非授权频谱载波的低频载波组传输信息/数据和控制信令。若发送终端记录的第四numConsecutiveDTX的数值大于或等于第四连续DTX门限值，则发送终端停止利用非授权频谱载波的高频载波组传输信息/数据和控制信令。
其中，发送终端记录的第一numConsecutiveDTX的数值，可以理解为，发送终端连续未检测到第一数据对应的第一HARQ反馈消息的次数。发送终端记录的第二numConsecutiveDTX的数值，可以理解为，发送终端连续未检测到第二数据对应的第二HARQ反馈消息的次数。发送终端记录的第三numConsecutiveDTX的数值，可以理解为，发送终端连续未检测到第三数据对应的第三HARQ反馈消息的次数。发送终端记录的第四numConsecutiveDTX的数值，可以理解为，发送终端连续未检测到第四数据对应的第四HARQ反馈消息的次数。
可选的，若发送终端记录的第一numConsecutiveDTX的数值大于或等于第一连续DTX门限值，发送终端记录的第二numConsecutiveDTX的数值大于或等于第二连续DTX门限值，若发送终端记录的第三numConsecutiveDTX的数值大于或等于第三连续DTX门限值，且发送终端记录的第四numConsecutiveDTX的数值大于或等于第四连续DTX门限值，则发送终端释放发送终端与接收终端之间的单播连接。
以上介绍了本申请实施例提供的信息传输的方法，以下将介绍用于执行上述信息传输的方法的执行主体。
图12为本申请实施例的一种通信装置1200的示意性框图。该装置可以应用于或部署于本申请方 法实施例中的第一终端中。该装置与第二终端通过侧行链路进行单播通信，该通信装置1200包括：
收发单元1210，用于接收来自网络设备的配置信息，所述配置信息包括第一连续非连续发射DTX门限值和第二连续DTX门限值，所述第一连续DTX门限值与第一载波组相关联，所述第二连续DTX门限值与第二载波组相关联；
所述收发单元1210还用于，利用所述第一载波组中的载波，向所述第二终端发送第一信息；
所述收发单元1210还用于，利用所述第二载波组中的载波，向所述第二终端发送第二信息；
处理单元1220，用于若所述装置连续未检测到所述第一信息对应的第一混合自动重传请求HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则停止利用所述第一载波组传输信息；和/或，若所述装置连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则停止利用所述第二载波组传输信息。
可选的，所述处理单元1220还用于，若所述装置连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，且所述装置连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则释放所述装置与所述第二终端之间的单播连接。
可选的，所述第一载波组包括低频载波，所述第二载波组包括高频载波；或者，所述第一载波组包括授权频谱载波，所述第二载波组包括非授权频谱载波。
可选的，所述第二连续DTX门限值大于所述第一连续DTX门限值。
可选的，所述第一载波组包括主载波，所述第二载波组包括辅载波。
可选的，所述处理单元1220具体用于，若所述装置连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则停止利用所述第一载波组和所述第二载波组传输信息。
可选的，所述处理单元1220还用于，若所述装置连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则释放所述装置与所述第二终端之间的单播连接。
可选的，所述配置信息还包括第三连续DTX门限值和第四连续DTX门限值，所述第三连续DTX门限值与第三载波组相关联，所述第四连续DTX门限值与第四载波组相关联；
所述收发单元1210还用于，利用所述第三载波组中的载波，向所述第二终端发送第三信息；
所述收发单元1210还用于，利用所述第四载波组中的载波，向所述第二终端发送第四信息；
所述处理单元1220还用于，若连续未检测到所述第三信息对应的第三HARQ反馈消息的次数大于或等于所述第三连续DTX门限值，则停止利用所述第三载波组传输信息；和/或，若连续未检测到所述第四信息对应的第四HARQ反馈消息的次数大于或等于所述第四连续DTX门限值，则停止利用所述第四载波组传输信息。
可选的，所述处理单元1220还用于，若所述装置连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，所述装置连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，所述装置连续未检测到所述第三信息对应的第三HARQ反馈消息的次数大于或等于所述第三连续DTX门限值，且所述装置连续未检测到所述第四信息对应的第四HARQ反馈消息的次数大于或等于所述第四连续DTX门限值，则释放所述装置与所述第二终端之间的单播连接。
可选的，所述第一载波组和所述第二载波组包括授权频谱载波，所述第三载波组和所述第四载波组包括非授权频谱载波，所述第一载波组和所述第三载波组包括低频载波，所述第二载波组和所述第四载波组包括高频载波。
如图13为本申请实施例的另一种通信装置1300的示意性框图。该通信装置1300包括：处理器1310、存储器1320和通信接口1330；
存储器1320用于存储计算机程序；
处理器1310通过通信接口1330与存储器1320耦合，处理器1310用于调用并运行所述存储器1320中的所述计算机程序，以实现本申请实施例中的方法。该通信装置可以应用于本申请实施例的第一终端中。可选的，处理器1310和存储器1320集成在一起。
上述的处理器1310可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实 施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可选的，本申请实施例还提供了一种通信设备，该通信设备包括输入输出接口和逻辑电路，该输入输出接口用于获取输入信息和/或输出信息；该逻辑电路，用于执行上述任一方法实施例中的方法，根据输入信息进行处理和/或生成输出信息。
本申请实施例提供了一种通信系统，包括本申请实施例的信息传输的方法中的第一终端、第二终端和网络设备。
本申请实施例还提供了一种计算机可读存储介质，其上存储有用于实现上述方法实施例中的方法的计算机程序。当该计算机程序在计算机上运行时，使得该计算机可以实现上述方法实施例中的方法。
本申请实施例还提供了一种计算机程序产品，所述计算机程序产品包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得上述方法实施例中的方法被执行。
本申请实施例还提供了一种芯片，包括处理器，所述处理器与存储器相连，所述存储器用于存储计算机程序，所述处理器用于执行所述存储器中存储的计算机程序，以使得所述芯片执行上述方法实施例中的方法。
应理解，在本申请实施例中，编号“第一”、“第二”…仅仅为了区分不同的对象，比如为了区分不同的终端、载波组等，并不对本申请实施例的范围构成限制，本申请实施例并不限于此。
另外，本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系；本申请中术语“至少一个”，可以表示“一个”和“两个或两个以上”，例如，A、B和C中，可以表示：单独存在A，单独存在B，单独存在C、同时存在A和B，同时存在A和C，同时存在C和B，同时存在A和B和C，这七种情况。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请 各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (23)

  1. 一种信息传输的方法，其特征在于，第一终端与第二终端通过侧行链路进行单播通信，所述方法包括：
    所述第一终端接收来自网络设备的配置信息，所述配置信息包括第一连续非连续发射DTX门限值和第二连续DTX门限值，所述第一连续DTX门限值与第一载波组相关联，所述第二连续DTX门限值与第二载波组相关联；
    所述第一终端利用所述第一载波组中的载波，向所述第二终端发送第一信息；
    所述第一终端利用所述第二载波组中的载波，向所述第二终端发送第二信息；
    若所述第一终端连续未检测到所述第一信息对应的第一混合自动重传请求HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则停止利用所述第一载波组传输信息；和/或，
    若所述第一终端连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则停止利用所述第二载波组传输信息。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，且所述第一终端连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则所述第一终端释放所述第一终端与所述第二终端之间的单播连接。
  3. 根据权利要求1或2所述的方法，其特征在于，
    所述第一载波组包括低频载波，所述第二载波组包括高频载波；或者，
    所述第一载波组包括授权频谱载波，所述第二载波组包括非授权频谱载波。
  4. 根据权利要求3所述的方法，其特征在于，
    所述第二连续DTX门限值大于所述第一连续DTX门限值。
  5. 根据权利要求1或2所述的方法，其特征在于，
    所述第一载波组包括主载波，所述第二载波组包括辅载波。
  6. 根据权利要求5所述的方法，其特征在于，所述若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则所述第一终端停止利用所述第一载波组传输信息，包括：
    若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则所述第一终端停止利用所述第一载波组和所述第二载波组传输信息。
  7. 根据权利要求5或6所述的方法，其特征在于，所述方法还包括：
    若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则所述第一终端释放所述第一终端与所述第二终端之间的单播连接。
  8. 根据权利要求1所述的方法，其特征在于，所述配置信息还包括第三连续DTX门限值和第四连续DTX门限值，所述第三连续DTX门限值与第三载波组相关联，所述第四连续DTX门限值与第四载波组相关联；
    所述方法还包括：
    所述第一终端利用所述第三载波组中的载波，向所述第二终端发送第三信息；
    所述第一终端利用所述第四载波组中的载波，向所述第二终端发送第四信息；
    若所述第一终端连续未检测到所述第三信息对应的第三HARQ反馈消息的次数大于或等于所述第三连续DTX门限值，则所述第一终端停止利用所述第三载波组传输信息；和/或，
    若所述第一终端连续未检测到所述第四信息对应的第四HARQ反馈消息的次数大于或等于所述第四连续DTX门限值，则所述第一终端停止利用所述第四载波组传输信息。
  9. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    若所述第一终端连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，所述第一终端连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，所述第一终端连续未检测到所述第三信息对应的第三HARQ反馈消息的次数大于或等于所述第三连续DTX门限值，且所述第一终端连续未检测到所述第四信息对应 的第四HARQ反馈消息的次数大于或等于所述第四连续DTX门限值，则所述第一终端释放所述第一终端与所述第二终端之间的单播连接。
  10. 根据权利要求8或9所述的方法，其特征在于，
    所述第一载波组和所述第二载波组包括授权频谱载波，所述第三载波组和所述第四载波组包括非授权频谱载波，所述第一载波组和所述第三载波组包括低频载波，所述第二载波组和所述第四载波组包括高频载波。
  11. 一种通信装置，其特征在于，所述装置与第二终端通过侧行链路进行单播通信，所述装置包括：
    收发单元，用于接收来自网络设备的配置信息，所述配置信息包括第一连续非连续发射DTX门限值和第二连续DTX门限值，所述第一连续DTX门限值与第一载波组相关联，所述第二连续DTX门限值与第二载波组相关联；
    所述收发单元还用于，利用所述第一载波组中的载波，向所述第二终端发送第一信息；
    所述收发单元还用于，利用所述第二载波组中的载波，向所述第二终端发送第二信息；
    处理单元，用于若所述装置连续未检测到所述第一信息对应的第一混合自动重传请求HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则停止利用所述第一载波组传输信息；和/或，若所述装置连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则停止利用所述第二载波组传输信息。
  12. 根据权利要求11所述的装置，其特征在于，
    所述处理单元还用于，若所述装置连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，且所述装置连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，则释放所述装置与所述第二终端之间的单播连接。
  13. 根据权利要求11或12所述的装置，其特征在于，
    所述第一载波组包括低频载波，所述第二载波组包括高频载波；或者，
    所述第一载波组包括授权频谱载波，所述第二载波组包括非授权频谱载波。
  14. 根据权利要求13所述的装置，其特征在于，
    所述第二连续DTX门限值大于所述第一连续DTX门限值。
  15. 根据权利要求11或12所述的装置，其特征在于，
    所述第一载波组包括主载波，所述第二载波组包括辅载波。
  16. 根据权利要求15所述的装置，其特征在于，
    所述处理单元具体用于，若所述装置连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则停止利用所述第一载波组和所述第二载波组传输信息。
  17. 根据权利要求15或16所述的装置，其特征在于，
    所述处理单元还用于，若所述装置连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，则释放所述装置与所述第二终端之间的单播连接。
  18. 根据权利要求11所述的装置，其特征在于，所述配置信息还包括第三连续DTX门限值和第四连续DTX门限值，所述第三连续DTX门限值与第三载波组相关联，所述第四连续DTX门限值与第四载波组相关联；
    所述收发单元还用于，利用所述第三载波组中的载波，向所述第二终端发送第三信息；
    所述收发单元还用于，利用所述第四载波组中的载波，向所述第二终端发送第四信息；
    所述处理单元还用于，若连续未检测到所述第三信息对应的第三HARQ反馈消息的次数大于或等于所述第三连续DTX门限值，则停止利用所述第三载波组传输信息；和/或，若连续未检测到所述第四信息对应的第四HARQ反馈消息的次数大于或等于所述第四连续DTX门限值，则停止利用所述第四载波组传输信息。
  19. 根据权利要求18所述的装置，其特征在于，
    所述处理单元还用于，若所述装置连续未检测到所述第一信息对应的第一HARQ反馈消息的次数大于或等于所述第一连续DTX门限值，所述装置连续未检测到所述第二信息对应的第二HARQ反馈消息的次数大于或等于所述第二连续DTX门限值，所述装置连续未检测到所述第三信息对应的第三 HARQ反馈消息的次数大于或等于所述第三连续DTX门限值，且所述装置连续未检测到所述第四信息对应的第四HARQ反馈消息的次数大于或等于所述第四连续DTX门限值，则释放所述装置与所述第二终端之间的单播连接。
  20. 根据权利要求18或19所述的装置，其特征在于，
    所述第一载波组和所述第二载波组包括授权频谱载波，所述第三载波组和所述第四载波组包括非授权频谱载波，所述第一载波组和所述第三载波组包括低频载波，所述第二载波组和所述第四载波组包括高频载波。
  21. 一种通信装置，其特征在于，包括：处理器和存储器，所述存储器用于存储计算机程序，所述处理器用于执行所述存储器中存储的计算机程序，以使得所述通信装置执行如权利要求1至10中任一项所述的方法。
  22. 一种计算机可读存储介质，其特征在于，包括：
    所述计算机可读介质存储有计算机程序；
    所述计算机程序在计算机上运行时，使得所述计算机执行权利要求1至10中任一项所述的方法。
  23. 一种计算机程序产品，其特征在于，包括计算机程序，当所述计算机程序被执行时，使得如权利要求1至10任一项所述的方法被实现。
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