WO2021204085A1 - 一种侧行链路通信方法、装置及系统 - Google Patents
一种侧行链路通信方法、装置及系统 Download PDFInfo
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- WO2021204085A1 WO2021204085A1 PCT/CN2021/085315 CN2021085315W WO2021204085A1 WO 2021204085 A1 WO2021204085 A1 WO 2021204085A1 CN 2021085315 W CN2021085315 W CN 2021085315W WO 2021204085 A1 WO2021204085 A1 WO 2021204085A1
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- terminal device
- mac pdu
- harq feedback
- side link
- resource
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1861—Physical mapping arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1854—Scheduling and prioritising arrangements
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- 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
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
Definitions
- This application relates to the field of communication, and in particular to a side link communication method, device and system.
- one resource pool is a segment A collection of time-frequency resources.
- the resources for the UE to communicate on the SL are determined from the resource pool configured on the network side.
- the TX UE When the sending end UE (TX UE) performs initial transmission on the side link grant (sl grant), the TX UE sends the medium access control layer packet data unit (MAC PDU), if the TX UE is configured Physical uplink control channel (PUCCH) resources and the sl grant has associated physical sidelink feedback channel (PSFCH) resources, but the hybrid automatic repeat request (hybrid automatic) of MAC PDU
- MAC PDU medium access control layer packet data unit
- PUCCH Physical uplink control channel
- PSFCH physical sidelink feedback channel
- HARQ hybrid automatic repeat request
- the retransmission request (HARQ) feedback attribute is disable, and the lack of HARQ information feedback on the PUCCH will cause unnecessary retransmissions and waste resources.
- This application provides a side link communication method, device and system to avoid unnecessary retransmissions and save resources.
- this application provides a sidelink communication method, the method includes: if the first terminal device determines that the HARQ feedback attribute of the logical channel (logic channel, LCH) in the MAC PDU is disabled, And the network side device configures the PUCCH resource for the first terminal device and the sl grant for sending MAC PDU is configured with the associated PSFCH resource, then the first terminal device may send a first request message to the second terminal device to request the first terminal device Second, the terminal device performs HARQ feedback on the MAC PDU.
- the method includes: if the first terminal device determines that the HARQ feedback attribute of the logical channel (logic channel, LCH) in the MAC PDU is disabled, And the network side device configures the PUCCH resource for the first terminal device and the sl grant for sending MAC PDU is configured with the associated PSFCH resource, then the first terminal device may send a first request message to the second terminal device to request the first terminal device Second, the terminal device performs HARQ feedback on the MAC PDU.
- the MAC PDU is the initial transmission on the sl grant, that is, the MAC PDU is the new data transmitted by the first terminal device on the sl grant.
- the network side device configures the first terminal device with PUCCH resources and is associated with the above sl grant PSFCH resources, then, the first terminal device can request the second terminal device to perform HARQ feedback on this MAC PDU. In this way, unnecessary retransmissions are avoided and resources are saved. .
- the first request message may include: control information; correspondingly, the above method may further include: the first terminal device configures the HARQ feedback attribute in the control information to be enabled.
- the HARQ feedback attribute may be indicated by one or more bits in the control information. Then, the first terminal device sets the bit used to indicate the HARQ feedback attribute in the control information to enable.
- control information may be sidelink control information (SCI), that is, the first terminal device sends the SCI to the second terminal device to request The second terminal device performs HARQ feedback on the MAC PDU.
- SCI sidelink control information
- the above method may further include: the first terminal device receives the HARQ feedback information sent by the second terminal device, that is, the response message of the second terminal device to the first request information; if HARQ If the feedback information is acknowledgement information (ACK), the first terminal device sends the acknowledgement information to the network side device on the PUCCH resource; or, if the HARQ feedback information is negative acknowledgement information, the first terminal device sends the acknowledgement information to the network on the PUCCH resource.
- the side device sends a negative response message, thus avoiding unnecessary retransmissions and saving resources.
- the present application provides a sidelink communication method.
- the method includes: a second terminal device receives a first request message; the second terminal device responds to the first request message and performs HARQ feedback on the MAC PDU on the PSFCH.
- the second terminal device responds to the first request message and performs HARQ feedback on the MAC PDU on the PSFCH including: the second terminal device responds to the first request message and sends to the first terminal device HARQ feedback information.
- the first request message may include: control information; further, the above control information may be SCI, that is, the second terminal device receives the SCI from the second terminal device, And according to the SCI to the first terminal device to perform HARQ feedback on the MAC PDU.
- control information may be SCI, that is, the second terminal device receives the SCI from the second terminal device, And according to the SCI to the first terminal device to perform HARQ feedback on the MAC PDU.
- this application provides a sidelink communication method, the method includes: if the first terminal device determines that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl used to send the MAC PDU If grant does not configure the associated PSFCH resource, the first terminal device ignores the sl grant.
- the above MAC PDU is the initial transmission on the above sl grant.
- the LCH in the MAC PDU sent by the first terminal device on the sl grant supports HARQ feedback, it means that the MAC PDU is expected to perform HARQ feedback, but the sl grant is not configured with the associated PSFCH resource.
- the first terminal device ignores the sl grant to avoid the HARQ feedback attributes of the MAC PDU from mismatching the resources configured by the UE, thereby avoiding unnecessary retransmissions or lack of retransmissions. Packet loss.
- the first terminal device ignores the sidelink authorization, including: the first terminal device does not send the MAC PDU to the third terminal device through the sl grant.
- this application provides a side link communication method, the method includes: if the first terminal device determines that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl grant used to send the MAC PDU is not configured Associated PSFCH resources, the first terminal device sends a second request message to the network side device, and the second request message is used to request the network side device to allocate PSFCH resources.
- the above MAC PDU is the initial transmission on the sl grant.
- the first terminal device requests the network side device to allocate PSFCH resources, so that the second terminal device can perform HARQ feedback on the MAC PDU on the newly configured PSFCH resources to avoid the HARQ feedback attributes of the MAC PDU and the UE configured resources do not match , Thereby avoiding unnecessary retransmission or packet loss due to lack of retransmission.
- the second request message may include the HARQ feedback attribute of the MAC PDU; the first terminal device sends the second request message to the network side device, including: the first terminal device sends the network side device Send the HARQ feedback attributes of the MAC PDU.
- the second request message may include MAC control element (CE) or radio resource control (radio resource control, RRC) signaling.
- CE MAC control element
- RRC radio resource control
- other signaling may also be included, which is not specifically limited in the embodiment of the present application.
- the second request message directly instructs the network-side device to allocate PSFCH resources in the form of signaling, and can also indicate the HARQ feedback attribute of the MAC PDU in the form of signaling, so that the network-side device can according to the HARQ feedback attribute of the MAC PDU Allocate PSFCH resources.
- the second request message is used to request the network side device to reconfigure the PSFCH resource associated with the sl Grant; or, the second request message is used to request the network side device to re-allocate the resource pool,
- the re-allocated resource pool is configured with PSFCH resources, that is, the first terminal device can request the network side device to allocate PSFCH resources for the current resource pool, so that the PSFCH resources associated with the sl grant configuration used to transmit MAC PDUs, or, The first terminal device can request the network-side device to reselect a new resource pool for the first terminal device.
- the new resource pool is configured with PSFCH resources, and the sl grant used to transmit MAC PDUs can also be configured with associated PSFCH resources, and then The second terminal device may perform HARQ feedback on the MAC PDU on the newly configured PSFCH resource.
- the present application provides a sidelink communication method.
- the method includes: a network-side device receives a second request message from a first terminal device; and the network-side device responds to the second request message to allocate to the first terminal device PSFCH resources.
- the second request message may include the HARQ feedback attribute of the MAC PDU; the network side device receiving the second request message from the first terminal device includes: the network side device receives the HARQ feedback attribute from the first terminal device.
- the HARQ feedback attribute of the MAC PDU of the terminal device may include the HARQ feedback attribute of the MAC PDU;
- the second request message may include MA CE or RRC signaling.
- other signaling may also be included, which is not specifically limited in the embodiment of the present application.
- the second request message directly instructs the network-side device to allocate PSFCH resources in the form of signaling, and can also indicate the HARQ feedback attribute of the MAC PDU in the form of signaling, so that the network-side device can according to the HARQ feedback attribute of the MAC PDU Allocate PSFCH resources.
- the second request message is used to request the network side device to reconfigure the PSFCH resource associated with the sl Grant; or, the second request message is used to request the network side device to re-allocate the resource pool,
- the re-allocated resource pool is configured with PSFCH resources, that is, the first terminal device can request the network side device to allocate PSFCH resources for the current resource pool, so that the PSFCH resources associated with the sl grant configuration used to transmit MAC PDUs, or, The first terminal device can request the network-side device to reselect a new resource pool for the first terminal device.
- the new resource pool is configured with PSFCH resources, and the sl grant used to transmit MAC PDUs can also be configured with associated PSFCH resources, and then The second terminal device may perform HARQ feedback on the MAC PDU on the newly configured PSFCH resource.
- the present application provides a sidelink communication method.
- the method includes: if the HARQ feedback attribute of at least one LCH configured by the network-side device for the first terminal device is enabled, then the network-side device is the first terminal The device is configured with a resource pool, and at least one resource pool in the configured resource pool is configured with PSFCH resources.
- the network side device when the network side device configures resources for the first terminal device, if the configured LCH supports HARQ feedback, it needs to configure PSFCH resources for the first terminal device accordingly, that is, the network side device configures the first terminal device Resource pool, at least one resource pool in the configured resource pool is configured with PSFCH resources. Then, the second terminal device can perform HARQ feedback on the MAC PDU on the configured PSFCH resource to avoid the HARQ feedback attributes of the MAC PDU from mismatching the resources configured by the UE, thereby avoiding unnecessary retransmission or lack of retransmission. Lead to packet loss.
- the resource pool is correspondingly configured with PSFCH resources. If the network side device configures multiple resource pools for the first terminal device, then multiple resource pools are configured for the first terminal device. At least one resource pool in the resource pool is correspondingly configured with PSFCH resources. In this way, it can be realized that the first terminal device configures the LCH that supports HARQ feedback and has corresponding PSFCH resources. Corresponding can also be understood as corresponding, or can be understood as having an association relationship.
- this application provides a side link communication method, the method includes: if the first terminal device determines that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl grant used to send the MAC PDU is not configured Associated PSFCH resources, the first terminal device enters an idle state or a third (inactive) state, and performs resource reselection, and the reselected resource pool is configured with PSFCH resources.
- the above MAC PDU is the initial transmission on the above sl grant.
- the LCH in the MAC PDU sent by the first terminal device on the sl grant supports HARQ feedback, it means that the MAC PDU is expected to perform HARQ feedback, but the sl grant is not configured with the associated PSFCH resource.
- the first terminal device can be in the idle state or the third state to perform resource reselection, so that the reselected resource pool is configured with PSFCH resources.
- the second terminal device can use the reselected PSFCH resource for the MAC PDU Perform HARQ feedback to avoid mismatch between the HARQ feedback attributes of the MAC PDU and the resources configured by the UE, thereby avoiding unnecessary retransmissions or packet loss due to lack of retransmissions.
- the above method further includes: after the first terminal device enters the idle state or the third state, switching to the side link mode 2
- this application provides a side link communication method, the method includes: if the first terminal device determines that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl grant used to send the MAC PDU is not configured For the associated PSFCH resource, the first terminal device selects DST again.
- the above MAC PDU is the initial transmission on the above sl grant.
- the LCH in the MAC PDU sent by the first terminal device on the sl grant supports HARQ feedback, it means that the MAC PDU is expected to perform HARQ feedback, but the sl grant is not configured with the associated PSFCH resource.
- the first terminal device may reselect DST, and the LCH associated with the reselected DST may not support HARQ feedback.
- the HARQ feedback attribute of the MAC PDU and the resource configured by the UE may not match, thereby avoiding unnecessary Retransmission or packet loss due to lack of retransmission.
- DST is the DST determined according to the LCH or MAC CE
- the LCH or MAC CE is the one with the highest priority among multiple LCHs or MAC CEs that meet the preset conditions; the preset conditions are at least Including: the HARQ feedback attribute of multiple LCH or MAC CE is disabled.
- this application provides a sidelink communication method, the method includes: if the first terminal device determines that the HARQ feedback attribute of the LCH in the MAC PDU is enable, and the sl grant used to send the MAC PDU is not Configure the associated PSFCH resource, the first terminal device sends a third request message to the second terminal device, and the third request message is used to request the second terminal device not to perform HARQ feedback on the MAC PDU.
- the above MAC PDU is the initial transmission on the above sl grant.
- the third request message may include: control information; correspondingly, the above method may further include: the first terminal device configures the HARQ feedback attribute in the control information to be disabled.
- the HARQ feedback attribute may be indicated by one or more bits in the control information. Then, the first terminal device sets the bit used to indicate the HARQ feedback attribute in the control information to disable.
- the first terminal device requests the second terminal device not to perform HARQ feedback on the MAC PDU to avoid the HARQ feedback attributes of the MAC PDU from mismatching the resources configured by the UE, thereby avoiding unnecessary retransmissions or loss due to lack of retransmissions. Bag.
- this application provides a sidelink communication method, the method includes: a second terminal device receives a third request message sent by a first terminal device, and the third request message is used to request the second terminal device not to respond to MAC PDUs. Perform HARQ feedback; the second terminal device responds to the third request information and does not perform HARQ feedback on the MAC PDU.
- the third request message may include: control information; the HARQ feedback attribute in the control information is configured to be disabled.
- the present application provides a communication device.
- the communication device may be a chip or a system-on-chip in a first terminal device, and may also be used in the first terminal device to implement the above-mentioned first aspect or any one of its possibilities.
- the communication device may include: a sending module and a processing module; the sending module is used if the processing module determines that the HARQ feedback attribute of the LCH in the MAC PDU is disabled, and the network side device configures the first terminal device with PUCCH resources and If the sl grant that sends the MAC PDU has been configured with the associated PSFCH resource, the first request message is sent to the second terminal device.
- the first request message is used to request the second terminal device to perform HARQ feedback on the MAC PDU.
- the second terminal device performs sidelink communication, and the MAC PDU is the initial transmission on the sl grant.
- the first request message includes: control information; and a processing module, which is further configured to configure the HARQ feedback attribute in the control information to be enabled.
- control information is SCI.
- the communication device further includes: a receiving module for receiving HARQ feedback information sent by the second terminal device; a sending module for receiving the HARQ feedback information if the HARQ feedback information is affirmative response information, Then send the positive response information on the PUCCH resource; or, if the HARQ feedback information is negative response information, send the negative response information on the PUCCH resource.
- the present application provides a communication device.
- the communication device may be a chip or a system on a chip in a first terminal device, and may also be used in the first terminal device to implement the second aspect or any one of its possibilities.
- the communication device may include: a sending module and a processing module; the sending module is used if the processing module determines that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl grant used to send the MAC PDU is not configured with associated PSFCH resources, Ignore sl grant, MAC PDU is the initial transmission on sl grant.
- the sending module is specifically configured to send a MAC PDU to the second terminal device without slgrant.
- the processing module is also used to determine if the HARQ feedback attribute of the LCH to be packaged is enabled before the package is grouped, and is used to send the sl of the MAC PDU Grant does not configure the associated PSFCH resource, then does not generate the corresponding MAC PDU for the sl grant; or, the processing module is also used to determine DST according to the priority of the LCH, if the HARQ attribute of the highest priority LCH is enabled , Stop continuing to filter LCH.
- the present application provides a communication device.
- the communication device may be a chip or a system-on-chip in the first terminal device, and may also be used in the first terminal device to implement the above-mentioned third aspect or any one of its possibilities.
- the functional module of the implementation method may be a chip or a system-on-chip in the first terminal device, and may also be used in the first terminal device to implement the above-mentioned third aspect or any one of its possibilities.
- the communication device may include: a sending module and a processing module; the sending module is used if the processing module determines that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl grant used to send the MAC PDU is not configured with associated PSFCH resources, Then, a second request message is sent to the network side device, the second request message is used to request the allocation of PSFCH resources for the first terminal device, and the MAC PDU is the initial transmission on the sl grant.
- the second request message includes the HARQ feedback attribute of the MAC PDU; the sending module is specifically configured to send the HARQ feedback attribute of the MAC PDU to the network side device.
- the second request message includes MAC control unit CE or radio resource control RRC signaling.
- the second request message is used to request the network side device to allocate PSFCH resources associated with sl Grant; or, the second request message is used to request the network side device to reallocate the resource pool,
- the resource pool is configured with PSFCH resources.
- the present application provides a communication device.
- the communication device may be a chip or a system-on-chip in a network-side device, and may also be a first terminal device for implementing the fourth aspect or any possible implementation thereof.
- the communication device may include: a processing module configured to configure a resource pool for the first terminal device if the HARQ feedback attribute of the at least one LCH configured for the first terminal device is enabled, and at least one resource pool in the resource pool is configured with PSFCH resources.
- the present application provides a communication device.
- the communication device may be a chip or a system-on-chip in the first terminal device, and may also be used in the first terminal device to implement the above-mentioned fifth aspect or any one of its possibilities.
- the communication device may include: a processing unit configured to enter the idle state or the third state if it is determined that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl grant used to transmit the MAC PDU is not configured with the associated PSFCH resource , And perform resource reselection, the reselected resource pool is configured with PSFCH resources, and the MAC PDU is the initial transmission on the grant.
- the processing unit is also used to switch to the side link mode 2 after entering the idle state or the third state.
- the present application provides a communication device.
- the communication device may be a chip or a system-on-chip in the first terminal device, and may also be used in the first terminal device to implement the above-mentioned sixth aspect or any one of its possibilities.
- the communication device may include: a processing unit for reselecting the communication target DST, if it is determined that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl grant used to send the MAC PDU is not configured with the associated PSFCH resource, then reselecting the communication target DST, MAC PDU is the initial transmission on sl grant.
- DST is DST determined according to LCH or MAC CE
- LCH or MAC CE is the one with the highest priority among multiple LCHs or MAC CEs that meet preset conditions; preset conditions At least including: the HARQ feedback attributes of multiple LCHs or MAC CEs are disabled.
- the present application provides a communication device.
- the communication device may be a chip or a system-on-chip in the first terminal device, and may also be used in the first terminal device to implement the seventh aspect or any one of its possibilities.
- the communication device may include: a sending unit and a processing unit; the sending unit is used for sending the MAC PDU without configuring the associated PSFCH resource if the processing unit determines that the HARQ feedback attribute of the LCH in the MAC PDU is enable,
- the second terminal device sends a third request message, and the third request message is used to request the second terminal device not to perform HARQ feedback on the MAC PDU.
- the third request message may include: control information; correspondingly, the processing unit is further configured to configure the HARQ feedback attribute in the control information to be disabled.
- the present application provides a communication device, including: a processor and a memory; the processor is coupled to the memory, and the processor is configured to read and execute instructions in the memory to implement the above-mentioned first to tenth aspects. Aspect or any one of its possible implementation manners of the side link communication method.
- the present application provides a communication device, including: a processor and a memory; the processor is coupled to the memory, and the processor is configured to read and execute instructions in the memory to implement the fourth to sixth aspects as described above. Aspect or any one of its possible implementation manners of the side link communication method information.
- the present application provides a sidelink communication system, including: the first terminal device and the second terminal device as described in the first aspect to the tenth aspect or any one of its possible implementation manners, the first One terminal device performs side-link communication with the second terminal device.
- the present application provides a sidelink communication system, including: the first terminal device and the second terminal device as described in the first aspect to the tenth aspect or any possible implementation manner thereof, And the network side device as described in the foregoing fourth aspect to sixth aspect or any one of its possible implementation manners.
- the present application provides a computer-readable storage medium.
- the computer-readable storage medium stores instructions. When the instructions are run on a computer, they are used to execute the above-mentioned first to tenth aspects or any one of them.
- this application provides a computer program or computer program product, which when the computer program or computer program product is executed on a computer, enables the computer to implement the aforementioned first to tenth aspects or any of the possible The side link communication method described in the implementation mode.
- Fig. 1 is a schematic diagram of an SL communication system in an embodiment of the application
- FIG. 2 is a first schematic flowchart of a side link communication method in an embodiment of this application
- FIG. 3 is a second schematic flowchart of a side link communication method in an embodiment of this application.
- FIG. 4 is a third schematic flowchart of a side link communication method in an embodiment of this application.
- FIG. 5 is a fourth schematic flowchart of a side link communication method in an embodiment of this application.
- FIG. 6 is a fifth schematic flowchart of a side link communication method in an embodiment of this application.
- FIG. 7 is a sixth schematic flowchart of a side link communication method in an embodiment of this application.
- FIG. 8 is a seventh schematic flowchart of a side link communication method in an embodiment of this application.
- FIG. 9 is a first structural diagram of a communication device in an embodiment of this application.
- FIG. 10 is a second structural diagram of a communication device in an embodiment of this application.
- the corresponding device may include one or more units such as functional units to perform the described one or more method steps (for example, one unit performs one or more steps). , Or multiple units, each of which performs one or more of multiple steps), even if such one or more units are not explicitly described or illustrated in the drawings.
- the corresponding method may include one step to perform the functionality of one or more units (for example, one step performs one or more units). The functionality, or multiple steps, each of which performs the functionality of one or more of the multiple units), even if such one or more steps are not explicitly described or illustrated in the drawings.
- FIG. 1 is a schematic diagram of an SL communication system in an embodiment of this application.
- the SL system 100 may include: a network side device 101 and a terminal device 102. While the terminal device communicates with the network side device, it can also communicate with other terminal devices.
- the network side device can perform resource configuration, scheduling, coordination, etc. on the sidelink of the communication between the terminal devices, and assist the direct communication between the terminal devices.
- the terminal device may also perform resource configuration, scheduling, coordination, etc., on the side link of communication between other terminal devices by itself, which is not specifically limited in the embodiment of the present application.
- the above-mentioned network-side device may be a device used on the access network side to support terminal access to the wireless communication system.
- it may be the next-generation base station (gNB, next generation NodeB) and the transmit-receive point (TRP) in the 5G access technology communication system.
- TRP transmit-receive point
- Transmission Reception Point may be the next-generation base station (gNB, next generation NodeB) and the transmit-receive point (TRP) in the 5G access technology communication system.
- Transmission Reception Point Transmission Reception Point
- Relay Node Relay Node
- Access Point AP, Access Point
- RSU Road Site Unit
- the above-mentioned terminal device may be a device that provides voice or data connectivity to users, for example, it may also be called UE, mobile station, subscriber unit, station (STAtion), or terminal (TE, Terminal Equipment). )Wait.
- the terminal device can be a cellular phone (cellular phone), personal digital assistant (PDA, Personal Digital Assistant), wireless modem (modem), handheld device (handheld), laptop computer (laptop computer), cordless phone (cordless phone), Wireless Local Loop (WLL, Wireless Local Loop) station or tablet computer (pad), etc.
- devices that can access the wireless communication system, communicate with the network side of the wireless communication system, or communicate with other devices through the wireless communication system can all be terminal devices in the embodiments of the present application.
- the terminal equipment can be statically fixed or mobile.
- network-side equipment such as a base station, configures a resource pool for UE's SL communication, and a resource pool is a collection of time-frequency resources.
- the resources for the UE to communicate on the SL link are determined from a pre-configured or a resource pool configured on the base station side.
- the Tx UE determines from the resource pool that there are two modes of transmission resources for communication on the SL link, namely mode1 and mode2.
- the foregoing pre-configured resources may be obtained from a network element of the core network, or may be preset in the UE.
- the base station allocates SL transmission resources for Tx UE through scheduling.
- the Tx UE when the Tx UE has SL to transmit data, it reports the SL buffer status report (buffer status report, BSR) MAC CE to the base station through the Uu port to inform the base station of the current Tx UE's data to be transmitted on the PC5 port. quantity.
- the base station can dynamically allocate transmission resources for the Tx UE.
- the UE selects transmission resources from the resource pool pre-configured or configured by the base station as needed, without the base station for scheduling.
- the SL resource determined by the UE is configured by the base station (for example, configured through RRC signaling or system information block (system information block, SIB) configuration), or pre-configured.
- the pre-configuration mentioned here may be obtained from the network element of the core network, or may be preset in the UE.
- the UE When the uplink radio resources are allocated based on the sl grant, the UE needs to determine the total amount of data of each LCH included in the newly transmitted MAC PDU, and if necessary, the UE also allocates resources for the MAC CE. That is to say, the uplink resource allocated to a UE by the network side device through sl grant is determined. The UE decides which LCH data to place and the logic of each LCH based on the configured LCH attributes and the rules stipulated by the existing protocol. How much data the channel puts in the MAC PDU.
- the TX UE when the TX UE transmits new data on the sl grant, if the TX UE establishes a connection with multiple RX UEs at the same time, and the LCH with data belongs to different DST, then the TX UE first needs to determine the sl grant Which DST is used to communicate with. For this sl grant, the TX UE selects the LCH or MAC CE with the highest priority (ie, the first LCH or the first MAC CE) among the LCH or MAC CE that meets the following first conditions. An LCH or the first MAC CE determines the DST of the communication.
- the above-mentioned first condition may include:
- configured grant type1 is used to indicate side link configuration authorization type 1;
- sl-configuredSLGrantType1Allowed is used to indicate whether the data of the LCH can be transmitted on the resources of sidelink configuration authorization type 1.
- the UE uses an algorithm similar to a token bucket to implement MAC PDU encapsulation.
- the UE determines whether to send data of a certain LCH based on whether there are tokens in the token bucket and the number of tokens, and controls the amount of data of the logical channel encapsulated in the MAC PDU.
- the UE maintains a variable SB j for the jth LCH. j is an integer greater than or equal to 1 and less than or equal to the number of tokens in the token bucket. SB j indicates the number of tokens currently available in the token bucket, and each token Corresponds to 1Byte of data. SB j is initialized to 0 when the LCH is established, and each T is increased by sPBR ⁇ T, where T is the elapsed time since SB j was increased last time. The value of SB j cannot exceed the maximum capacity of the token bucket.
- the TX UE needs to filter out the first LCH that meets the following second condition among the first LCH associated with this DST. Then, the TX UE selects all the first LCHs Resource allocation in an LCH.
- the above-mentioned second condition may include:
- the HARQ feedback attribute of the LCH is the same as the HARQ feedback attribute of the first LCH.
- the TX UE encapsulates the data of the LCH that belongs to the same source and destination pair and has the same HARQ attribute in one MAC PDU.
- the network side device when the network side device configures a resource pool for the UE, the network side device configures the physical sidelink shared channel (PSSCH) resource for the UE, and the UE transmits on the PSSCH resource data.
- PSSCH physical sidelink shared channel
- the RX UE After the RX UE receives the data sent by the TX UE through the PSSCH, it can feed back HARQ response messages (such as acknowledgement messages (ACK) or negative acknowledge messages (NACK)) on the PSFCH resource.
- HARQ response messages such as acknowledgement messages (ACK) or negative acknowledge messages (NACK)
- the network side device is configuring the resource pool
- PSFCH resources may be configured for the resource pool, or PSFCH resources may not be configured for the resource pool. If the network side configures PSFCH resources for the resource pool, each sl grant in the resource pool has an associated PSFCH resource. Conversely, if the network side does not configure PSFCH resources for the resource pool, then every sl grant in the resource pool has an associated PSFCH resource. There is no associated PSFCH resource.
- the network side device when the network side device configures the UE with the LCH that can be used for SL communication, it can configure the HARQ attributes of the SL LCH through the sl-HARQ-feedback-enable field, where the HARQ attributes of the SL LCH are per UE . If it is configured as enable, it means that this SL LCH supports HARQ feedback. If it is configured as disable, it means that this SL LCH does not support HARQ feedback.
- the RX UE will not send HARQ feedback to the TX UE, and the TX UE will not be able to perform HARQ on the PUCCH resource to the network side.
- the feedback causes the network side to believe that the TX UE has not received any HARQ feedback, and then believes that the RX UE side has failed to decode, thus frequently scheduling retransmissions for the RX UE, which wastes resources.
- the HARQ feedback attribute of the MAC PDU does not match the resources configured by the UE, which will cause unnecessary retransmissions Or packet loss due to lack of retransmission.
- the embodiment of the present application provides a side-link communication method, which can be applied to the above-mentioned side-link communication system, and the above-mentioned UE may include a first terminal device and a second terminal device.
- the first terminal device may be used as the transmitting end device (ie, TX UE), and the second terminal device may be used as the receiving end device (ie, RX UE).
- the network-side device configures the resource pool for the TX UE can be divided into configured PSFCH resources and unconfigured PSFCH resources, the following describes the above-mentioned side-link communication methods separately based on the above two situations.
- the network side device configures the PSFCH resource for the TX UE configuration resource pool, then the sl grant used to send the MAC PDU has been configured with the associated PSFCH resource.
- FIG. 2 is a schematic flowchart 1 of the side link communication method in an embodiment of this application. As shown in FIG. 2, the method may include:
- the first terminal device may send the first request message to the second terminal device;
- the first request information is used to request the second terminal device to perform HARQ feedback on the MAC PDU. That is, the first terminal device requests the second terminal to perform HARQ feedback on the MAC PDU through the first request information.
- the second terminal device sends HARQ feedback information to the first terminal device in response to the first request message.
- the response of the second terminal device to the first request message can be understood as that the second terminal device performs HARQ feedback on the MAC PDU after receiving the MAC PDU according to the first request message.
- the first terminal device After the first terminal device performs MAC PDU grouping through the above method, it can determine the HARQ feedback attribute of each LCH in the MAC PDU. If the HARQ feedback attribute of these LCHs is disabled, and the network side device configures the first terminal device with The PUCCH resource and the sl grant used to send the MAC PDU have been configured with the associated PSFCH resource. Then, the first terminal device can request the second terminal device to perform HARQ feedback on the MAC PDU through the first request message, and the second terminal device is in After receiving the first request message, in response to the first request message, HARQ feedback information, such as an ACK message or a NACK message, is sent to the first terminal device on the PSFCH resource. The first terminal device receives the HARQ feedback information. Then, the first terminal device sends a response message to the network side device on the PUCCH resource according to the received HARQ feedback information.
- HARQ feedback information such as an ACK message or a NACK message
- the MAC PDU described in the embodiment of this application is the initial transmission on the sl grant, that is, the newly transmitted data on the sl grant, which will not be repeated in the following embodiments.
- the first request message may but is not limited to include: control information.
- the control information may be the SCI corresponding to the above newly transmitted MAC PDU.
- the foregoing method may include: the first terminal device configures the HARQ feedback attribute in the control information to be enabled. That is, the first terminal device may configure one or more bits (bits) used to indicate the HARQ feedback attribute in the control information to be enabled. Then, after receiving the control information, the second terminal device can perform HARQ feedback on the corresponding MAC PDU according to the bits.
- the bit used to indicate the HARQ feedback attribute in the control information can be set to 0 to indicate disable. It is easy to understand that the bit can also be set to 1 to indicate enable.
- the bits used to represent the HARQ feedback attribute in the control information may also have other representation methods, which are not specifically limited in the embodiment of the present application.
- the network side device when the network side device configures resources for the TX UE, it also configures corresponding PUCCH resources, so that the TX UE can perform HARQ feedback to the network side device on the PUCCH resources.
- the above method may further include: the first terminal device receives the HARQ feedback information sent by the second terminal device, that is, the response message of the second terminal device to the first request information; if the HARQ feedback information is ACK, the first terminal device Send an ACK to the network-side device on the PUCCH resource; or, if the HARQ feedback information is NACK, the first terminal device sends a NACK to the network-side device on the PUCCH resource.
- the network side device receives the response message sent by the first terminal device, it will not frequently schedule retransmissions for the RX UE, saving resources.
- the network-side device configures the resource pool for the TX UE and does not configure the PSFCH resource, then the sl grant used to send the MAC PDU is not configured with the associated PSFCH resource.
- the HARQ feedback attribute of the LCH in the MAC PDU is enable, because there is no PSFCH resource, there will be a mismatch between the HARQ feedback attribute of the MAC PDU and the resource configured by the UE, which will cause unnecessary retransmission or lack of retransmission Which leads to packet loss.
- FIG. 3 is a schematic diagram of the second flow of the side link communication method in an embodiment of this application. As shown in FIG. 3, the method may include:
- the first terminal device determines that the HARQ feedback attribute of the LCH in the MAC PDU is enable, and the sl grant used to send the MAC PDU is not configured with associated PSFCH resources;
- S302 The first terminal device ignores the sl grant.
- the first terminal device can determine the HARQ feedback attribute of each LCH in the MAC PDU by performing the MAC PDU grouping by the above method. If the LCH in the MAC PDU sent by the first terminal device on the sl grant supports HARQ feedback, It means that the MAC PDU is expected to perform HARQ feedback, but the sl grant is not configured with the associated PSFCH resource. At this time, the first terminal device ignores the sl grant to avoid the HARQ feedback attribute of the MAC PDU and the resource configured by the UE. , Thereby avoiding unnecessary retransmission or packet loss due to lack of retransmission.
- S301 may include: the first terminal device does not send the MAC PDU to the second terminal device through slgrant.
- the multiplexing and assembly entity (multiplexing and assembly) in the first terminal device encapsulates the data of the LCH belonging to the same source and destination pair and having the same HARQ attributes in one MAC PDU, the data in the first terminal The MAC entity may not send the MAC PDU to the second terminal device through the slgrant.
- the first terminal device may also ignore the sl grant before the MAC PDU packet is grouped. Then, if the first terminal device determines that the HARQ feedback attribute of the LCH to be encapsulated is enable, and the sl grant used for transmission is not configured with the associated PSFCH resource, the first terminal device can ignore the sl grant, that is, multiplexing and assembly The entity does not generate the corresponding MAC PDU for the sl grant; or, when the first terminal device determines DST according to the priority of the LCH, if the HARQ attribute of the highest priority LCH is enable, the multiplexing and assembling entity stops continuing to filter the LCH .
- Fig. 4 is a third schematic flow chart of the side link communication method in an embodiment of this application. As shown in Fig. 4, the method may include:
- the first terminal device determines that the HARQ feedback attribute of the LCH in the MAC PDU is enable, and the sl grant used to send the MAC PDU is not configured with the associated PSFCH resource, the first terminal device sends a second request message to the network side device ;
- the second request message is used to request to allocate PSFCH resources to the terminal device (the first terminal device and/or the second terminal device). That is, the first terminal device requests the network-side device for the PSFCH resource associated with the sl grant used to send the MAC PDU through the second request information.
- S402 The network side device allocates PSFCH resources in response to the second request message.
- the first terminal device can determine the HARQ feedback attribute of each LCH in the MAC PDU through the above method for MAC PDU grouping. If the HARQ feedback attribute of these LCHs is enable, but the sl grant used to send the MAC PDU is not configured with Associated PSFCH resources, the first terminal device sends a second request message to the network side device, and the network side device can allocate PSFCH resources to the terminal device according to the second request message, so that the second terminal device can use the newly configured PSFCH resource
- the HARQ feedback of the MAC PDU prevents the HARQ feedback attribute of the MAC PDU from mismatching the resources configured by the UE, thereby avoiding unnecessary retransmission or packet loss due to lack of retransmission.
- the response of the network-side device to the second request message may be understood as that the network-side device determines to allocate PSFCH resources to the first terminal device according to the second request message.
- the second request message may include the HARQ feedback attribute of the MAC PDU; the first terminal device sending the second request message to the network side device includes: the first terminal device sends the HARQ of the MAC PDU to the network side device Feedback attributes.
- the second request message may include MAC CE or RRC signaling.
- other signaling may also be included, which is not specifically limited in the embodiment of the present application.
- the second request message directly instructs the network side device to allocate PSFCH resources in the form of signaling, and can also indicate the HARQ feedback attribute of the MAC PDU in the form of signaling, so that the network side device can feedback the HARQ according to the MAC PDU
- the attribute allocates PSFCH resources.
- S402 may include: the network-side device reconfigures the PSFCH resource associated with the sl grant; or, the network-side device re-allocates the resource pool, and the re-allocated resource pool is configured with the PSFCH resource.
- Fig. 5 is a fourth schematic flowchart of a side link communication method in an embodiment of this application. As shown in Fig. 5, the method may include:
- S501 The HARQ feedback attribute of at least one LCH configured by the network side device for the terminal device (the first terminal device and/or the second terminal device) is enable;
- the network side device configures a resource pool for the terminal device.
- At least one of the resource pools configured this time is configured with PSFCH resources.
- PSFCH resources when configuring the resource pool, if the attribute of at least one LCH is enable, then at least one resource pool has PSFCH resources; or when configuring the LCH, if the attribute of at least one LCH is enable, then at least one resource pool has PSFCH resources; or, when configuring LCH, if at least one resource pool has PSFCH resources, only one or more LCH attributes can be configured as enable.
- the network side device configures the resource pool for the terminal device, if the terminal device is configured with at least one LCH with the HARQ feedback attribute of enable, then at least one resource pool has PSFCH resources. In other words, if the network side device is configured for the terminal device At least one resource pool has PSFCH resources, and the network side device can configure the LCH with the HARQ feedback attribute of enable for the terminal device. Or when the network side device configures the LCH for the terminal device, if the attribute of at least one LCH is enable, then at least one resource pool has PSFCH resources.
- the second terminal device can perform HARQ feedback on the MAC PDU on the configured PSFCH resource to avoid MAC
- the HARQ feedback attribute of the PDU does not match the resource configured by the UE, thereby avoiding unnecessary retransmission or packet loss due to lack of retransmission.
- the resource pool is correspondingly configured with PSFCH resources. If the network side device configures multiple resource pools for the terminal device, then multiple resource pools At least one of the resource pools must be configured with PSFCH resources. Then, if the terminal device determines that the HARQ attribute of the LCH of the MAC PDU is enable, the second terminal device can send the HARQ feedback information of the MAC PDU to the first terminal device on the PSFCH resource.
- Fig. 6 is a schematic flow chart 5 of the side link communication method in an embodiment of this application. As shown in Fig. 6, the method may include:
- the first terminal device determines that the HARQ feedback attribute of the LCH in the MAC PDU is enable, and the sl grant used to send the MAC PDU is not configured with associated PSFCH resources;
- S602 The first terminal device enters an idle state or a third (inactive) state, and performs resource reselection;
- the reselected resource pool is configured with PSFCH resources.
- the first terminal device can determine the HARQ feedback attribute of each LCH in the MAC PDU through the above method for MAC PDU grouping. If the HARQ feedback attribute of these LCHs is enable, but the sl grant used to send the MAC PDU is not configured with For the associated PSFCH resource, the first terminal device can enter the idle state or the third state by itself. In the idle state or the third state, also known as the inactive state, the first terminal device can perform resource reselection to select the PSFCH configuration The resource pool of the resource.
- the second terminal device can send HARQ feedback on the PSFCH resource corresponding to the reselected resource pool to avoid the HARQ feedback attributes of the MAC PDU from mismatching the resources configured by the UE, thereby avoiding unnecessary Retransmissions or packet loss due to lack of retransmissions.
- the above method further includes: the first terminal device switches to the side link mode 2 after entering the idle state or the third state. Since in the side link mode2, the first terminal device can select resources by itself without the need for network side device scheduling, then the first terminal device can independently perform resource reselection after entering the idle state or the third state.
- FIG. 7 is a schematic diagram 6 of the flow of the side link communication method in an embodiment of this application. As shown in FIG. 7, the method may include:
- the first terminal device determines that the HARQ feedback attribute of the LCH in the MAC PDU is enable, and the sl grant used to send the MAC PDU is not configured with associated PSFCH resources;
- S702 The first terminal device reselects DST.
- the first terminal device can determine the HARQ feedback attribute of each LCH in the MAC PDU through the above method for MAC PDU grouping. If the HARQ feedback attribute of these LCHs is enable, but the sl grant used to send the MAC PDU is not configured with For the associated PSFCH resource, the first terminal device re-selects the DST, and the HARQ feedback attribute of the LCH associated with the re-selected DST can be disabled. In this way, the HARQ feedback attribute of the MAC PDU and the resource configured by the UE do not match, thereby avoiding non-matching. Necessary retransmission or packet loss due to lack of retransmission.
- the process of reselecting DST by the first terminal device is as follows:
- the first terminal device selects the LCH or MAC CE (that is, the second LCH or the second MAC CE) with the highest priority from the LCH or MAC CE that meets the following third condition, and determines the DST for communication based on this LCH.
- the LCH or MAC CE that is, the second LCH or the second MAC CE
- the foregoing third condition may include: the HARQ attribute of the LCH is disable;
- the above-mentioned third condition may also include at least one of the following:
- configured grant type1 is used to indicate side link configuration authorization type 1;
- sl-configuredSLGrantType1Allowed is used to indicate whether the data of the LCH can be transmitted on the resources of sidelink configuration authorization type 1.
- the first terminal device can select LCH or MAC CE from the LCH or MAC CE that meets the condition of "HARQ attribute of LCH is disable" in the third condition above, or it can also select LCH or MAC CE. Select LCH or MAC CE from the condition of "LCH HARQ attribute is disable" and meet some or all of the above three conditions from 1 to 3.
- the first terminal device determines the DST, if there are LCHs that meet the following fourth condition among the LCHs associated with this DST, these LCHs need to be screened out, and then all the selected LCHs should be selected. Resource allocation.
- the above-mentioned fourth condition may include at least one of the following:
- the HARQ feedback attribute of the LCH is the same as the HARQ feedback attribute of the second LCH.
- the first terminal device may screen LCHs from the LCHs associated with the DST according to all or some of the above fourth conditions.
- the first terminal device encapsulates the data of the LCH that belongs to the same source and destination pair and has the same HARQ feedback attribute in one MAC PDU.
- the above-mentioned third condition and fourth condition may also include other conditions, which are not specifically limited in the embodiments of the present application.
- FIG. 8 is a schematic flowchart of the side link communication method according to an embodiment of the application. Referring to FIG. 8, the method may include:
- the first terminal device determines that the HARQ feedback attribute of the LCH in the MAC PDU is enable, and the sl grant used to send the MAC PDU is not configured with the associated PSFCH resource, the first terminal device sends a third request message to the second terminal device ;
- the third request message is used to request the second terminal device not to perform HARQ feedback on the MAC PDU. That is, the first terminal device requests the second terminal not to perform HARQ feedback on the MAC PDU through the third request information.
- the second terminal device responds to the third request message and does not perform HARQ feedback on the MAC PDU after receiving the MAC PDU.
- the first terminal device can determine the HARQ feedback attribute of each LCH in the MAC PDU through the above method for MAC PDU grouping. If the HARQ feedback attribute of these LCHs is enable, but the sl grant used to send the MAC PDU is not configured with For the associated PSFCH resource, the first terminal device can send a third request message to the second terminal device to request the second terminal device not to perform HARQ feedback on the MAC PDU, so as to avoid the HARQ feedback attribute of the MAC PDU from mismatching the resource configured by the UE. In turn, unnecessary retransmissions or packet loss due to lack of retransmissions are avoided.
- the response of the second terminal device to the third request message can be understood as that the second terminal device does not perform HARQ feedback on the MAC PDU after receiving the MAC PDU according to the third request message.
- the third request message may but is not limited to include: control information.
- the control information can be SCI.
- the above method may include: the first terminal device configures the HARQ feedback attribute in the control information to disable. That is, the first terminal device may configure one or more bits (such as 1 bit) used to indicate the HARQ feedback attribute in the control information to be disabled. Then, after receiving the control information, the second terminal device may not perform HARQ feedback on the corresponding MAC PDU according to the bit.
- the embodiments of the present application also provide a communication device.
- the communication device may be a chip or a system on a chip in the first terminal device, or may be used in the first terminal device to implement any of the foregoing possible implementations.
- the chip or system on chip includes a memory, and instructions are stored in the memory, and the above method is executed when the instructions are called by the system on chip or chip.
- Fig. 9 is a schematic structural diagram 1 of the communication device in the embodiment of the application. As shown in Fig.
- the communication device 900 may include: a sending module 901 and a processing module 902;
- the HARQ feedback attribute of the LCH in the LCH is disabled, and the sl grant used to send the MAC PDU is configured with the associated PSFCH resource, then the first request message is sent to the second terminal device, and the first request message is used to request the second
- the terminal device performs HARQ feedback on the MAC PDU, the first terminal device performs sidelink communication with the second terminal device, and the MAC PDU is the initial transmission on the sl grant.
- the first request message includes: control information; and a processing module, which is further configured to configure the HARQ feedback attribute in the control information to be enabled.
- control information is SCI.
- the communication device 900 further includes: a receiving module 903, configured to receive HARQ feedback information sent by the second terminal device; If information, the positive response information is sent on the PUCCH resource; or, if the HARQ feedback information is negative response information, the negative response information is sent on the PUCCH resource.
- a receiving module 903 configured to receive HARQ feedback information sent by the second terminal device; If information, the positive response information is sent on the PUCCH resource; or, if the HARQ feedback information is negative response information, the negative response information is sent on the PUCCH resource.
- the foregoing sending module may be a sending interface, a sending circuit, or a transmitter, etc.
- the foregoing receiving module may be a receiving interface, a receiving circuit, or a receiver, etc.
- the foregoing processing module may be one or more processors.
- the embodiments of the present application also provide a communication device.
- the communication device may be a chip or a system-on-chip in the first terminal device, or may be used in the first terminal device to implement any of the foregoing possible implementations.
- the chip or system on chip includes a memory, and instructions are stored in the memory, and the above method is executed when the instructions are called by the system on chip or chip. Still referring to FIG.
- the communication device 900 may include: a sending module 901 and a processing module 902; a sending module 901, used if the processing module 902 determines that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and is used to send
- the sl grant of the MAC PDU is not configured with the associated PSFCH resource, and the sl grant is ignored.
- the MAC PDU is the initial transmission on the sl grant.
- the sending module is specifically configured to send the MAC PDU to the second terminal device without slgrant.
- the foregoing method may further include: if the processing module determines that the HARQ feedback attribute of the LCH to be grouped is enabled before the packet is grouped, and the sl grant used to send the MAC PDU is not configured for association The processing module can ignore the sl grant. If the processing module does not generate the corresponding MAC PDU for the sl grant, it is not the sl grant group packet; or, when the processing module determines the DST according to the priority of the LCH, If the HARQ attribute of the highest priority LCH is enabled, stop continuing to filter the LCH.
- the foregoing sending module may be a sending interface, a sending circuit, or a transmitter, etc.; the foregoing processing module may be one or more processors.
- the embodiments of the present application also provide a communication device.
- the communication device may be a chip or a system on a chip in the first terminal device, or may be used in the first terminal device to implement any of the foregoing possible implementations.
- the chip or system on chip includes a memory, and instructions are stored in the memory, and the above method is executed when the instructions are called by the system on chip or chip. Still referring to FIG.
- the communication device 900 may include: a sending module 901 and a processing module 902; a sending module 901, used if the processing module 902 determines that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and is used to send If the associated PSFCH resource is not configured in the sl grant of the MAC PDU, a second request message is sent to the network side device. The second request message is used to request the allocation of PSFCH resources for the first terminal device.
- the MAC PDU is the initial transmission on the sl grant.
- the second request message may include the HARQ feedback attribute of the MAC PDU; the first terminal device sending the second request message to the network side device includes: the first terminal device sends the HARQ of the MAC PDU to the network side device Feedback attributes.
- the second request message may include MAC CE or RRC.
- other signaling may also be included, which is not specifically limited in the embodiment of the present application.
- the second request message is used to request the network side device to allocate PSFCH resources associated with sl grant; or, the second request message is used to request the network side device to reallocate the resource pool, and the resource pool is configured with PSFCH resources .
- the foregoing sending module may be a sending interface, a sending circuit, or a transmitter, etc.; the foregoing processing module may be one or more processors.
- the embodiments of the present application also provide a communication device.
- the communication device may be a chip or a system-on-chip in a network-side device.
- the chip or system on chip includes a memory, and instructions are stored in the memory, and the above method is executed when the instructions are called by the system on chip or chip.
- the communication apparatus may include: a processing module 902, configured to configure a resource pool for the first terminal device if the HARQ feedback attribute of at least one LCH configured for the first terminal device is enabled. At least one resource pool in is configured with PSFCH resources.
- processing module may be one or more processors.
- the embodiments of the present application also provide a communication device.
- the communication device may be a chip or a system on a chip in the first terminal device, or may be used in the first terminal device to implement any of the foregoing possible implementations.
- the chip or system on chip includes a memory, and instructions are stored in the memory, and the above method is executed when the instructions are called by the system on chip or chip. Still referring to FIG.
- the communication device 900 may include: a processing unit 902, configured to determine that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl grant used to send the MAC PDU is not configured with the associated PSFCH resource , Enter the idle state or the third state, and perform resource reselection.
- the reselected resource pool is configured with PSFCH resources, and the MAC PDU is the initial transmission on the sl grant.
- the processing unit is also used to switch to the side link mode 2 after entering the idle state or the third state.
- processing module may be one or more processors.
- the embodiments of the present application also provide a communication device.
- the communication device may be a chip or a system on a chip in the first terminal device, or may be used in the first terminal device to implement any of the foregoing possible implementations.
- the chip or system on chip includes a memory, and instructions are stored in the memory, and the above method is executed when the instructions are called by the system on chip or chip. Still referring to FIG.
- the communication device 900 may include: a processing unit 902, configured to determine that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl grant used to send the MAC PDU is not configured with the associated PSFCH resource , Then re-select the communication target DST, MAC PDU is the initial transmission on sl grant.
- DST is DST determined according to LCH or MAC CE, and LCH or MAC CE is the highest priority among multiple LCHs or MAC CEs that meet preset conditions; the preset conditions include at least: multiple LCHs Or the HARQ feedback attribute of the MAC CE is disabled.
- processing module may be one or more processors.
- the embodiments of the present application also provide a communication device.
- the communication device may be a chip or a system on a chip in the first terminal device, or may be used in the first terminal device to implement any of the foregoing possible implementations.
- the chip or system on chip includes a memory, and instructions are stored in the memory, and the above method is executed when the instructions are called by the system on chip or chip. Still referring to FIG.
- the communication device 900 may include: a sending module 901 and a processing module 902; the sending module 901 is used to send the HARQ feedback attribute of the LCH in the MAC PDU to enable if the processing module determines The sl grant of the MAC PDU is not configured with the associated PSFCH resource, and a third request message is sent to the second terminal device. The third request message is used to request the second terminal device not to perform HARQ feedback on the MAC PDU.
- the third request message may include: control information; and a processing module configured to configure the HARQ feedback attribute in the control information to be disabled.
- FIG. 10 is a second structural diagram of a terminal device in an embodiment of the application. As shown in FIG.
- the communication device 1000 includes: a processor 1001 and a memory, the processor 1001 is coupled with the memory 1002, and the processor 1001 is configured to read And execute the instructions in the memory 1002; the processor 1001 is configured to if the processor 1001 determines that the HARQ feedback attribute of the LCH in the MAC PDU is disabled, and the network side device configures the terminal device with PUCCH resources and is used to send MAC If the sl grant of the PDU has been configured with the associated PSFCH resource, the first request message is sent to the second terminal device. The first request message is used to request the second terminal device to perform HARQ feedback on the MAC PDU.
- the MAC PDU is the initial on the sl grant. transmission.
- the first request message includes: control information; the processor is further configured to configure the HARQ feedback attribute in the control information to be enabled.
- control information is SCI.
- the processor is further configured to receive HARQ feedback information sent by the second terminal device; and is also configured to send the acknowledgement information on the PUCCH resource if the HARQ feedback information is acknowledgement information; or, If the HARQ feedback information is negative response information, the negative response information is sent on the PUCCH resource.
- the terminal device 1000 includes: the communication device 1000 includes: a processor 1001 and a memory, the processor 1001 is coupled to the memory 1002, and the processor 1001 is configured to read and execute instructions in the memory 1002; processing The device 1001 is configured to, if the processor 1001 determines that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl grant used to send the MAC PDU is not configured with the associated PSFCH resource, sl grant is ignored, and the MAC PDU is sl grant. Initial transmission.
- the processor 1001 is configured to not send the MAC PDU to the second terminal device through slgrant.
- the processor 1001 is further configured to determine that the HARQ feedback attribute of the LCH to be grouped is enabled before the packet is grouped, and the sl grant used to send the MAC PDU is not configured for association For the PSFCH resource, the corresponding MAC PDU is not generated for the sl grant; or, the processor 1001 is also configured to determine DST according to the priority of the LCH, if the HARQ attribute of the highest priority LCH is enabled, then Stop continuing to filter LCH.
- the terminal device 1000 includes: a processor 1001, a memory 1002, and a communication interface 1003.
- the processor 1001 is coupled to the memory 1002, and the communication interface 1003 is configured to be configured if the processor 1001 determines the LCH in the MAC PDU If the HARQ feedback attribute is enabled, and the associated PSFCH resource is not configured in the sl grant used to send MAC PDUs, a second request message is sent to the network side device, and the second request message is used to request the allocation of PSFCH resources to the first terminal device, MAC PDU is the initial transmission on sl grant.
- the second request message includes the HARQ feedback attribute of the MAC PDU; the communication interface 1003 is configured to send the HARQ feedback attribute of the MAC PDU to the network side device.
- the second request message includes MAC control unit CE or radio resource control RRC signaling.
- the second request message is used to request the network side device to allocate PSFCH resources associated with sl grant; or, the second request message is used to request the network side device to reallocate the resource pool, and the resource pool is configured with PSFCH resources .
- the communication device 1000 includes: a processor 1001 and a memory 1002, the processor 1001 is coupled with the memory 1002, the processor 1001 is configured to read and execute instructions in the memory 1002; the processor 1101 is configured To configure a resource pool for the first terminal device if the HARQ feedback attribute of at least one LCH configured for the first terminal device is enabled, and at least one resource pool in the resource pool is configured with PSFCH resources.
- an embodiment of the present application provides a communication device, which may be a terminal device, and the terminal device may be consistent with the first terminal device described in one or more of the foregoing embodiments.
- the communication device 1000 includes a processor 1001 and a memory 1002, and the processor 1001 is coupled with the memory 1002.
- the processor 1001 is configured to read and execute instructions in the memory 1002; the processor 1001 is configured to determine that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl grant used to send the MAC PDU is not configured for association If the PSFCH resource is in the idle state or the third state, and resource reselection is performed, the reselected resource pool is configured with PSFCH resources, and the MAC PDU is the initial transmission on the sl grant.
- the processor 1001 is further configured to switch to the side link mode 2 after entering the idle state or the third state.
- the communication device 1000 includes a processor 1001 and a memory 1002, and the processor 1001 is coupled with the memory 1002.
- the processor 1001 is configured to read and execute instructions in the memory 1002;
- the processor 1101 is configured to determine that the HARQ feedback attribute of the LCH in the MAC PDU is enabled, and the sl grant used to send the MAC PDU is not configured for association For PSFCH resources, re-select the communication target DST, and MAC PDU is the initial transmission on sl grant.
- DST is DST determined according to LCH or MAC CE, and LCH or MAC CE is the highest priority among multiple LCHs or MAC CEs that meet preset conditions; the preset conditions include at least: multiple LCHs Or the HARQ feedback attribute of the MAC CE is disabled.
- an embodiment of the present application provides a communication device, which may be a terminal device, and the terminal device may be consistent with the first terminal device described in one or more of the foregoing embodiments.
- the communication device 1000 includes: a processor 1001 and a memory 1002.
- the processor 1001 is coupled to the memory 1002; the processor 1001 is configured to read and execute instructions in the memory 1102; and the processor 1101 is It is configured to send the third request message to the second terminal device if the processor 1001 determines that the HARQ feedback attribute of the LCH in the MAC PDU is enable and the sl grant used to send the MAC PDU is not configured with the associated PSFCH resource It is used to request the second terminal device not to perform HARQ feedback on the MAC PDU.
- the third request message may include: control information; correspondingly, the communication interface 1003 is further configured to, for example, configure the HARQ feedback attribute in the control information to be disabled.
- the present application provides a side link communication system, including: the first terminal device and the second terminal device as described in any of the above possible implementation manners, and any of the above possible implementation manners The network side equipment.
- this application provides a computer-readable storage medium, which stores instructions.
- the instructions run on a computer, they are used to execute the side described in any of the above-mentioned possible implementations.
- Uplink communication method When the instructions run on a computer, they are used to execute the side described in any of the above-mentioned possible implementations.
- this application provides a computer program or computer program product.
- the computer program or computer program product is executed on a computer, the computer realizes the side link described in any of the above possible implementations. Communication method.
- the computer-readable medium may include a computer-readable storage medium, which corresponds to a tangible medium, such as a data storage medium, or a communication medium that includes any medium that facilitates the transfer of a computer program from one place to another (for example, according to a communication protocol) .
- a computer-readable medium may generally correspond to (1) a non-transitory tangible computer-readable storage medium, or (2) a communication medium, such as a signal or carrier wave.
- Data storage media may be any available media that can be accessed by one or more computers or one or more processors to retrieve instructions, codes, and/or data structures for implementing the techniques described in this application.
- the computer program product may include a computer-readable medium.
- such computer-readable storage media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage devices, magnetic disk storage devices or other magnetic storage devices, flash memory, or structures that can be used to store instructions or data Any other media that can be accessed by the computer in the form of desired program code. And, any connection is properly termed a computer-readable medium.
- any connection is properly termed a computer-readable medium.
- coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave to transmit instructions from a website, server, or other remote source
- coaxial cable Wire, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of media.
- the computer-readable storage media and data storage media do not include connections, carrier waves, signals, or other temporary media, but are actually directed to non-transitory tangible storage media.
- magnetic disks and optical disks include compact disks (CDs), laser disks, optical disks, digital versatile disks (DVD) and Blu-ray disks, where disks usually reproduce data magnetically, while optical disks use lasers to reproduce data optically data. Combinations of the above should also be included in the scope of computer-readable media.
- DSP digital signal processors
- ASIC application-specific integrated circuits
- FPGA field programmable logic arrays
- DSP digital signal processors
- ASSIC application-specific integrated circuits
- FPGA field programmable logic arrays
- DSP digital signal processors
- ASIC application-specific integrated circuits
- FPGA field programmable logic arrays
- processor may refer to any of the foregoing structure or any other structure suitable for implementing the techniques described herein.
- the functions described by the various illustrative logical blocks, modules, and steps described herein may be provided in dedicated hardware and/or software modules configured for encoding and decoding, or combined Into the combined codec.
- the technology may be fully implemented in one or more circuits or logic elements.
- the technology of this application can be implemented in a variety of devices or devices, including wireless handsets, integrated circuits (ICs), or a set of ICs (for example, chipsets).
- ICs integrated circuits
- a set of ICs for example, chipsets.
- Various components, modules, or units are described in this application to emphasize the functional aspects of the device for implementing the disclosed technology, but they do not necessarily need to be implemented by different hardware units.
- various units can be combined with appropriate software and/or firmware in the codec hardware unit, or by interoperating hardware units (including one or more processors as described above). supply.
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Abstract
Description
Claims (35)
- 一种侧行链路通信方法,其特征在于,包括:如果第一终端设备确定媒介访问控制层分组数据单元MAC PDU中的逻辑信道LCH的混合式自动重传请求HARQ反馈属性为非使能,且网络侧设备为所述第一终端设备配置有物理上行控制信道PUCCH资源以及用于发送所述MAC PDU的侧行链路授权已配置有关联的物理侧行链路反馈信道PSFCH资源,则所述第一终端设备向第二终端设备发送第一请求消息,所述第一请求消息用于请求所述第二终端设备对所述MAC PDU进行HARQ反馈,所述第一终端设备与所述第二终端设备进行侧行链路通信,所述MAC PDU为所述侧行链路授权上的初始传输。
- 根据权利要求1所述的方法,其特征在于,所述第一请求消息包括:控制信息;所述方法还包括:所述第一终端设备将所述控制信息中HARQ反馈属性配置为使能。
- 根据权利要求2所述的方法,其特征在于,所述控制信息为侧行链路控制信息SCI。
- 根据权利要求1至3任一项所述的方法,其特征在于,所述方法还包括:所述第一终端设备接收所述第二终端设备发送的HARQ反馈信息;如果所述HARQ反馈信息为肯定应答信息,则所述第一终端设备在所述PUCCH资源上发送肯定应答信息;或者,如果所述HARQ反馈信息为否定应答信息,则所述第一终端设备在所述PUCCH资源上发送否定应答信息。
- 一种侧行链路通信方法,其特征在于,包括:如果第一终端设备确定媒介访问控制层分组数据单元MAC PDU中的逻辑信道LCH的混合式自动重传请求HARQ反馈属性为使能,且用于发送所述MAC PDU的侧行链路授权未配置关联的物理侧行链路反馈信道PSFCH资源,则所述第一终端设备忽略所述侧行链路授权,所述MAC PDU为所述侧行链路授权上的初始传输。
- 根据权利要求5所述的方法,其特征在于,所述第一终端设备忽略所述侧行链路授权,包括:所述第一终端设备不通过所述侧行链路授权向所述第二终端设备发送所述MAC PDU。
- 一种侧行链路通信方法,其特征在于,包括:如果第一终端设备确定媒介访问控制层分组数据单元MAC PDU中的逻辑信道LCH的混合式自动重传请求HARQ反馈属性为使能,且用于发送所述MAC PDU的侧行链路授权未配置关联的物理侧行链路反馈信道PSFCH资源,则所述第一终端设备向网络侧设备发送第二请求消息,所述第二请求消息用于请求所述网络侧设备分配PSFCH资源,所述MAC PDU为所述侧行链路授权上的初始传输。
- 根据权利要求7所述的方法,其特征在于,所述第二请求消息包括所述MAC PDU的HARQ反馈属性;所述第一终端设备向网络侧设备发送第二请求消息,包括:所述第一终端设备向所述网络侧设备发送所述MAC PDU的HARQ反馈属性。
- 根据权利要求7或8所述的方法,其特征在于,所述第二请求消息包括MAC控制 单元CE或无线资源控制RRC信令。
- 根据权利要求7至9任一项所述的方法,其特征在于,所述第二请求消息,用于请求所述网络侧设备重新配置与所述侧行链路授权关联的PSFCH资源;或,用于请求所述网络侧设备重新分配资源池,所述资源池配置有PSFCH资源。
- 一种侧行链路通信方法,其特征在于,包括:如果网络侧设备为第一终端设备配置的至少一个逻辑信道LCH的混合式自动重传请求HARQ反馈属性为使能,则所述网络侧设备为所述第一终端设备配置资源池,所述资源池中的至少一个资源池配置有PSFCH资源。
- 一种侧行链路通信方法,其特征在于,包括:如果第一终端设备确定媒介访问控制层分组数据单元MAC PDU中的逻辑信道LCH的混合式自动重传请求HARQ反馈属性为使能,且用于发送所述MAC PDU的侧行链路授权未配置关联的物理侧行链路反馈信道PSFCH资源,则所述第一终端设备进入空闲态或第三态,并进行资源重选,重选的资源池配置有PSFCH资源,所述MAC PDU为所述侧行链路授权上的初始传输。
- 根据权利要求12所述的方法,其特征在于,所述方法还包括:所述第一终端设备在进入空闲态或第三态后,切换至侧行链路模式2。
- 一种侧行链路通信方法,其特征在于,包括:如果第一终端设备确定媒介访问控制层分组数据单元MAC PDU中的逻辑信道LCH的混合式自动重传请求HARQ反馈属性为使能,且用于发送所述MAC PDU的侧行链路授权未配置关联的物理侧行链路反馈信道PSFCH资源,则所述第一终端设备重新选择通信目标DST,所述MAC PDU为所述侧行链路授权上的初始传输。
- 根据权利要求14所述的方法,其特征在于,所述DST为根据LCH或MAC CE确定的DST,所述LCH或MAC CE为满足预设条件的多个LCH或MAC CE中优先级最高的;所述预设条件至少包括:所述多个LCH或MAC CE的HARQ反馈属性为非使能。
- 一种通信装置,其特征在于,包括:处理器和存储器;所述处理器与所述存储器耦合,所述处理器被配置为读取并执行存储器中的指令,以实现如权利要求1至10、和/或如权利要求12至15中任一项所述的侧行链路通信方法。
- 一种通信装置,其特征在于,包括:处理器和存储器;所述处理器与所述存储器耦合,所述处理器被配置为读取并执行存储器中的指令,以实现如权利要求11所述的侧行链路通信方法。
- 一种第一通信装置,其特征在于,所述装置包括发送模块和处理模块;所述发送模块用于如果所述处理模块确定媒介访问控制层分组数据单元MAC PDU中的逻辑信道LCH的混合式自动重传请求HARQ反馈属性为非使能,且网络侧设备为所述第一通信装置配置有物理上行控制信道PUCCH资源以及用于发送所述MAC PDU的侧行链路授权已配置有关联的物理侧行链路反馈信道PSFCH资源,则向第二通信装置发送第一请求消息,所述第一请求消息用于请求所述第二通信装置对所述MAC PDU进行HARQ反馈,所述第一通信装置与所述第二通信装置进行侧行链路通信,所述MAC PDU为所述侧行链路授权上的初始传输。
- 根据权利要求18所述的装置,其特征在于,所述第一请求消息包括:控制信 息;所述处理模块还用于:将所述控制信息中HARQ反馈属性配置为使能。
- 根据权利要求19所述的装置,其特征在于,所述控制信息为侧行链路控制信息SCI。
- 根据权利要求18至20任一项所述的装置,其特征在于,所述装置还包括:接收模块,用于接收所述第二通信装置发送的HARQ反馈信息;所述发送模块,还用于如果所述HARQ反馈信息为肯定应答信息,则在所述PUCCH资源上发送肯定应答信息;或者,如果所述HARQ反馈信息为否定应答信息,则在所述PUCCH资源上发送否定应答信息。
- 一种第一通信装置,其特征在于,所述装置包括:发送模块和处理模块;所述发送模块,用于如果所述处理模块确定媒介访问控制层分组数据单元MAC PDU中的逻辑信道LCH的混合式自动重传请求HARQ反馈属性为使能,且用于发送所述MAC PDU的侧行链路授权未配置关联的物理侧行链路反馈信道PSFCH资源,则忽略所述侧行链路授权,所述MAC PDU为所述侧行链路授权上的初始传输。
- 根据权利要求22所述的装置,其特征在于,所述发送模块用于:不通过所述侧行链路授权向第二通信装置发送所述MAC PDU。
- 一种第一通信装置,其特征在于,所述装置包括:发送模块和处理模块;所述发送模块,用于如果所述处理模块确定媒介访问控制层分组数据单元MAC PDU中的逻辑信道LCH的混合式自动重传请求HARQ反馈属性为使能,且用于发送所述MAC PDU的侧行链路授权未配置关联的物理侧行链路反馈信道PSFCH资源,则向网络侧设备发送第二请求消息,所述第二请求消息用于请求所述网络侧设备分配PSFCH资源,所述MAC PDU为所述侧行链路授权上的初始传输。
- 根据权利要求24所述的装置,其特征在于,所述第二请求消息包括所述MAC PDU的HARQ反馈属性;所述发送模块,用于向所述网络侧设备发送所述MAC PDU的HARQ反馈属性。
- 根据权利要求24或25所述的装置,其特征在于,所述第二请求消息包括MAC控制单元CE或无线资源控制RRC信令。
- 根据权利要求24至26任一项所述的装置,其特征在于,所述第二请求消息,用于请求所述网络侧设备重新配置与所述侧行链路授权关联的PSFCH资源;或,用于请求所述网络侧设备重新分配资源池,所述资源池配置有PSFCH资源。
- 一种第一通信装置,其特征在于,所述装置包括:处理模块;所述处理模块用于如果确定媒介访问控制层分组数据单元MAC PDU中的逻辑信道LCH的混合式自动重传请求HARQ反馈属性为使能,且用于发送所述MAC PDU的侧行链路授权未配置关联的物理侧行链路反馈信道PSFCH资源,则进入空闲态或第三态,并进行资源重选,重选的资源池配置有PSFCH资源,所述MAC PDU为所述侧行链路授权上的初始传输。
- 根据权利要求28所述的装置,其特征在于,所述处理模块还用于:进入空闲态或第三态后,切换至侧行链路模式2。
- 一种第一通信装置,其特征在于,所述装置包括:处理模块;所述处理模块用于如果确定媒介访问控制层分组数据单元MAC PDU中的逻辑信 道LCH的混合式自动重传请求HARQ反馈属性为使能,且用于发送所述MAC PDU的侧行链路授权未配置关联的物理侧行链路反馈信道PSFCH资源,则重新选择通信目标DST,所述MAC PDU为所述侧行链路授权上的初始传输。
- 根据权利要求30所述的装置,其特征在于,所述DST为根据LCH或MAC CE确定的DST,所述LCH或MAC CE为满足预设条件的多个LCH或MAC CE中优先级最高的;所述预设条件至少包括:所述多个LCH或MAC CE的HARQ反馈属性为非使能。
- 一种网络设备,其特征在于,所述网络设备包括:处理模块;所述处理模块用于如果为第一通信装置配置的至少一个逻辑信道LCH的混合式自动重传请求HARQ反馈属性为使能,则为所述第一通信装置配置资源池,所述资源池中的至少一个资源池配置有PSFCH资源。
- 一种侧行链路通信系统,其特征在于,包括:如权利要求18至31任一项所述的通信装置和/或如权利要求32所述的网络设备。
- 一种计算机可读存储介质,其上存储有计算机程序或指令,其特征在于,所述计算机程序或指令被执行时使得计算机执行如权利要求1至15中任一项所述的侧行链路通信方法。
- 一种计算机程序或计算机程序产品,在所述计算机程序或所述计算机程序产品在计算机上被执行时,是的计算机实现如权利要求1至15中任一项所述的侧行链路通信方法。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21783949.7A EP4120603A4 (en) | 2020-04-09 | 2021-04-02 | METHOD, APPARATUS, AND SIDE LINK COMMUNICATION SYSTEM |
| BR112022020455A BR112022020455A2 (pt) | 2020-04-09 | 2021-04-02 | Método, aparelho e sistema de comunicação de conexão secundária |
| US17/937,305 US12549315B2 (en) | 2020-04-09 | 2022-09-30 | Sidelink communication method, apparatus, and system |
Applications Claiming Priority (2)
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| CN202010276021.1 | 2020-04-09 |
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| WO2024040484A1 (zh) * | 2022-08-24 | 2024-02-29 | 北京小米移动软件有限公司 | 基于harq属性的载波选择或重选方法、装置及设备 |
| EP4651614A4 (en) | 2023-01-12 | 2026-04-22 | Quectel Wireless Solutions Co Ltd | WIRELESS COMMUNICATION METHOD AND APPARATUS |
| CN121174298A (zh) * | 2023-01-12 | 2025-12-19 | 上海移远通信技术股份有限公司 | 无线通信的方法及装置 |
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| CN107736049A (zh) * | 2015-06-26 | 2018-02-23 | 华为技术有限公司 | 上行数据传输的方法和装置 |
| WO2019162430A1 (en) * | 2018-02-22 | 2019-08-29 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method of transmitting sr on pucch in nr |
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| WO2016021699A1 (ja) * | 2014-08-08 | 2016-02-11 | 京セラ株式会社 | ユーザ端末及びプロセッサ |
| EP3257319B1 (en) * | 2015-02-12 | 2019-05-08 | Nec Corporation | Method and system for device to device communication |
| US20160295624A1 (en) * | 2015-04-02 | 2016-10-06 | Samsung Electronics Co., Ltd | Methods and apparatus for resource pool design for vehicular communications |
| US11013008B2 (en) * | 2018-06-29 | 2021-05-18 | Asustek Computer Inc. | Method and apparatus of handling device-to-device resource release in a wireless communication system |
| US11405144B2 (en) | 2018-09-21 | 2022-08-02 | Kt Corporation | Method and apparatus for transmitting sidelink HARQ feedback information |
| KR20210135336A (ko) * | 2019-03-26 | 2021-11-12 | 삼성전자주식회사 | V2x(vehicle-to-everything) 통신을 위한 rrc(radio resource control) 연결을 개시하는 방법 및 장치 |
| CN110740016B (zh) * | 2019-10-06 | 2022-09-09 | 中国信息通信研究院 | 一种车联网通信反馈定时方法和设备 |
| WO2021077400A1 (en) * | 2019-10-25 | 2021-04-29 | Qualcomm Incorporated | Hybrid automatic repeat request (harq) codebook enhancement and physical uplink control channel (pucch) resource determination with sidelink feedback forwarding |
| BR112022013794A2 (pt) * | 2020-01-13 | 2022-09-13 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Método para transmissão de dados, e dispositivo de terminal |
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| CN107736049A (zh) * | 2015-06-26 | 2018-02-23 | 华为技术有限公司 | 上行数据传输的方法和装置 |
| WO2019162430A1 (en) * | 2018-02-22 | 2019-08-29 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method of transmitting sr on pucch in nr |
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| See also references of EP4120603A4 |
Also Published As
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| EP4120603A1 (en) | 2023-01-18 |
| US20230023034A1 (en) | 2023-01-26 |
| CN113518435A (zh) | 2021-10-19 |
| CN113518435B (zh) | 2024-12-31 |
| EP4120603A4 (en) | 2023-08-02 |
| US12549315B2 (en) | 2026-02-10 |
| BR112022020455A2 (pt) | 2022-11-29 |
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