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WO2021027934A1 - Procédé et dispositif de détermination de ressource de rétroaction - Google Patents

Procédé et dispositif de détermination de ressource de rétroaction Download PDF

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Publication number
WO2021027934A1
WO2021027934A1 PCT/CN2020/109247 CN2020109247W WO2021027934A1 WO 2021027934 A1 WO2021027934 A1 WO 2021027934A1 CN 2020109247 W CN2020109247 W CN 2020109247W WO 2021027934 A1 WO2021027934 A1 WO 2021027934A1
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WIPO (PCT)
Prior art keywords
indication message
psfch
direct link
psfch period
period
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/109247
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English (en)
Chinese (zh)
Inventor
邓云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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Filing date
Publication date
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Publication of WO2021027934A1 publication Critical patent/WO2021027934A1/fr
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Ceased legal-status Critical Current

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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]
    • 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
    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the embodiments of the present invention relate to the field of communication technology, and in particular to a method and device for determining feedback resources.
  • LTE Long Term Evolution
  • ProSe Proximity-based Services
  • UE User Equipment
  • V2X vehicle-to-everything
  • Tx UE transmitting end UE
  • Rx UE receives the data to the transmitting end UE.
  • Tx UE Feed back an acknowledgement (acknowledge, ACK) or a non-acknowledge (NACK).
  • the Rx UE needs to determine an appropriate feedback resource, which is hereinafter referred to as a physical sidelink feedback channel (PSFCH) resource, or may also be referred to as a physical direct link feedback channel resource.
  • PSFCH physical sidelink feedback channel
  • the network-side equipment may configure a physical sidelink shared channel (PSSCH) of 1 time slot corresponding to the PSFCH in 1 time slot, that is, the Tx UE passes through the physical unit in one time slot.
  • PSSCH Physical Sidelink Control Channel
  • the Rx UE sends feedback to the Tx UE through the PSFCH in a later time slot.
  • the PSCCH can also be called a physical direct link control channel
  • the PSSCH can also be called a physical direct link shared channel.
  • the network-side device may also configure multiple PSSCHs in time slots to correspond to the PSFCH in one time slot.
  • the mapping relationship between the number of PSSCH time slots and the number of PSFCH time slots is called the PSFCH cycle.
  • the PSFCH period is 1 slot; when the PSSCH of n slots corresponds to the PSFCH in 1 slot, the PSFCH period is n Time slots, n ⁇ 1 and an integer. Therefore, in the process of determining the PSFCH resource, the RxUE needs to determine the PSFCH period first, and then determine the PSFCH resource according to the PSFCH period. Because for TxUE, PSCCH and PSSCH are simultaneously transmitted in one time slot, the PSFCH cycle can also be defined as the mapping relationship between the number of PSCCH time slots and the number of PSFCH time slots.
  • the Rx UE when the Rx UE is within the coverage of the network side device, it can learn the PSFCH cycle through system messages or dedicated signaling sent by the network side device. However, when the Rx UE is outside the coverage of the network side device, it cannot receive system messages or dedicated signaling, so that the Rx UE cannot learn the correct PSFCH period and thus cannot determine the PSFCH resource.
  • the embodiments of the present invention provide a method and device for determining feedback resources.
  • Tx UE and Rx UE interact through a direct link of a PC interface to achieve the purpose of Rx UE outside the coverage of the network side device to learn the PSFCH period being applied, thereby enabling Determine the correct PSFCH resource for feedback.
  • an embodiment of the present invention provides a method for determining feedback resources, including:
  • the first UE receives the first indication message from the second UE through the direct link, where the first indication message is used to indicate the PSFCH period of the first physical unilateral link feedback channel, and the direct link is the first UE
  • the first PSFCH period is used to indicate the physical unilateral link shared channel PSSCH that can be fed back by the physical unilateral link feedback channel PSFCH in a time slot Number of slots
  • the first UE determines a feedback resource according to the first PSFCH period, and the feedback resource is used to carry hybrid automatic repeat HARQ feedback information.
  • the first UE receiving the first indication message from the second UE through the direct link includes:
  • the first UE receives radio resource control RRC signaling from the second UE through the direct link, where the RRC signaling carries the first indication message.
  • the method before the first UE receives the first indication message from the second UE through the direct link, the method further includes:
  • the first UE determines that it is outside the coverage area of the network side device
  • the first UE sends a second indication message to the second UE through the direct link to indicate to the second UE that the first UE is outside the coverage area of the network-side device.
  • the method before the first UE receives the first indication message from the second UE through the direct link, the method further includes:
  • the first UE determines that it is outside the coverage area of the network side device
  • the first UE determines a second PSFCH period, where the second PSFCH period is used to indicate a PSFCH period pre-configured by a network-side device or protocol for a UE outside the coverage of the network-side device;
  • the first UE sends the second PSFCH period to the second UE.
  • the method before the first UE receives the first indication message from the second UE through the direct link, the method further includes:
  • the first UE is receiving or is about to receive data sent by the second UE through the direct link using at least two different frequencies, where the at least two different frequencies correspond to respective first indication messages;
  • the first UE receiving the first indication message from the second UE through the direct link includes:
  • the first UE receives the at least two first indication messages sent by the second UE through the direct link.
  • an embodiment of the present invention provides a method for determining feedback resources, including:
  • the second UE determines a first indication message, where the first indication message is used to indicate the PSFCH period of the first physical unilateral link feedback channel;
  • the second UE sends the first indication message to the first UE through a direct link, where the first indication message is used to indicate the PSFCH period of the first physical unilateral link feedback channel, and the direct link is The direct link of the PC5 interface between the first UE and the second UE.
  • the second UE sending the first indication message to the first UE through a direct link includes:
  • the second UE sends radio resource control RRC signaling to the first UE through the direct link, where the RRC signaling carries the first indication message.
  • the second UE determining the first indication message includes:
  • the second UE Determining, by the second UE, a second PSFCH period, where the second PSFCH period is a PSFCH period pre-configured by a network-side device or protocol for a UE outside the coverage of the network-side device;
  • the second UE determines that the PSFCH period configured by the serving cell is different from the second PSFCH period, and uses the PSFCH period configured by the serving cell as the first PSFCH period to generate the first indication message.
  • the second UE determining the first indication message includes:
  • the second UE uses the PSFCH period configured by the serving cell as the first PSFCH period to generate the first indication message.
  • the second UE determining the first indication message includes:
  • the second UE Receiving, by the second UE, a second PSFCH period sent by the first UE, where the second PSFCH period is a PSFCH period pre-configured by a network-side device or protocol for a UE outside the coverage of the network-side device;
  • the second UE determines that the PSFCH period configured by the serving cell is different from the second PSFCH period, and uses the PSFCH period configured by the serving cell as the first PSFCH period to generate the first indication message.
  • the method before the second UE determines the first indication message, the method further includes:
  • the second UE is using or will use at least two different frequencies to send data to the first UE through the direct link, and the at least two different frequencies respectively correspond to respective first indication messages;
  • the sending, by the second UE, the first indication message to the first UE through a direct link includes:
  • the second UE sends a first indication message corresponding to different frequencies of the at least two frequencies to the first UE through the direct link.
  • an apparatus for determining feedback resources including:
  • the receiving unit is configured to receive a first indication message from a second UE via a direct link, where the first indication message is used to indicate a PSFCH period of a first physical unilateral link feedback channel, and the direct link is the first A direct link of the PC5 interface between the UE and the second UE, the first PSFCH period is used to indicate the physical unilateral link feedback channel PSFCH in a time slot can feedback the physical unilateral link shared channel PSSCH time slot number;
  • the processing unit is configured to determine a feedback resource according to the first PSFCH period, and the feedback resource is used to carry the hybrid automatic repeat HARQ feedback information.
  • the receiving unit is configured to receive unilateral link control information SCI from the second UE through the direct link, and the SCI carries the first indication message;
  • the receiving unit is configured to receive radio resource control RRC signaling from the second UE through the direct link, where the RRC signaling carries the first indication message.
  • the above-mentioned apparatus further includes: a sending unit, and the processing unit is further configured to determine that it is on the network side before the receiving unit receives the first indication message from the second UE through the direct link Outside the coverage area of the equipment;
  • the sending unit is configured to send a second indication message to the second UE through the direct link, so as to indicate to the second UE that the first UE is outside the coverage area of the network side device.
  • the above-mentioned apparatus further includes: a sending unit, and the processing unit is further configured to determine that it is on the network side before the receiving unit receives the first indication message from the second UE through the direct link Outside the coverage of the device, determine a second PSFCH period, where the second PSFCH period is used to indicate a PSFCH period configured by the network-side device or protocol in advance for UEs outside the coverage of the network-side device;
  • the sending unit is configured to send the second PSFCH period to the second UE.
  • the above-mentioned apparatus further includes: a sending unit, and the receiving unit is further configured to receive the first indication message from the second UE through the direct link, Data to be sent through the direct link using at least two different frequencies, the at least two different frequencies respectively corresponding to respective first indication messages;
  • the sending unit is configured to receive the at least two first indication messages sent by the second UE through the direct link.
  • an apparatus for determining feedback resources including:
  • a processing unit configured to determine a first indication message, where the first indication message is used to indicate a PSFCH period of the first physical unilateral link feedback channel;
  • the sending unit is configured to send the first indication message to the first UE via a direct link, where the first indication message is used to indicate a PSFCH period of the first physical unilateral link feedback channel, and the direct link is The direct link of the PC5 interface between the first UE and the second UE.
  • the sending unit is configured to send unilateral link control information SCI to the first UE through the direct link, and the SCI carries the first indication message;
  • the sending unit is configured to send radio resource control RRC signaling to the first UE through the direct link, where the RRC signaling carries the first indication message.
  • the processing unit is used to determine the PSFCH period configured by the current serving cell, and determine the second PSFCH period.
  • the second PSFCH period is a network-side device or protocol preset to be in the network
  • the PSFCH period configured by the UE outside the coverage area of the side device determines that the PSFCH period configured by the serving cell is different from the second PSFCH period, and then the PSFCH period configured by the serving cell is taken as the first PSFCH period. Generating the first indication message.
  • the above-mentioned device further includes:
  • a receiving unit configured to receive a second indication message sent by the first UE through the direct link, where the second indication message is used to indicate that the first UE is outside the coverage of a network-side device;
  • the processing unit is configured to determine the PSFCH period configured by the serving cell currently in, and use the PSFCH period configured by the serving cell as the first PSFCH period to generate the first indication message.
  • the above-mentioned device further includes:
  • a receiving unit configured to receive a second PSFCH period sent by the first UE, where the second PSFCH period is a PSFCH period pre-configured by a network-side device or protocol for a UE outside the coverage of the network-side device;
  • the processing unit is configured to determine the PSFCH period configured by the serving cell currently located, and determine that the PSFCH period configured by the serving cell is different from the second PSFCH period, and then use the PSFCH period configured by the serving cell as the The first PSFCH period to generate the first indication message.
  • the sending unit is configured to use at least two different frequencies to send data to the first UE through the direct link, and the at least two different frequencies respectively correspond to respective first indication messages And send a first indication message corresponding to different frequencies of the at least two frequencies to the first UE through the direct link.
  • an embodiment of the present invention provides a user equipment, including a processor, a memory, and a computer program stored on the memory and capable of being run on the processor. Aspects or methods in the various possible implementations of the first aspect.
  • an embodiment of the present invention provides a user equipment, including a processor, a memory, and a computer program stored on the memory and capable of running on the processor.
  • the processor executes the program, the second Aspect or the methods in the various possible implementations of the second aspect.
  • embodiments of the present application provide a computer program product containing instructions, which when run on a user equipment, enable the user equipment computer to execute the above-mentioned first aspect or various possible implementation methods of the first aspect .
  • the embodiments of the present application provide a computer program product containing instructions that, when run on a user equipment, enable the user equipment to execute the foregoing second aspect or methods in various possible implementation manners of the second aspect.
  • an embodiment of the present application provides a storage medium with instructions stored in the storage medium, which when run on a user equipment, enable the user equipment to perform various possible functions as in the first aspect or the first aspect.
  • the method in the implementation mode is not limited to.
  • an embodiment of the present application provides a storage medium that stores instructions in the storage medium, which when run on a user equipment, causes the user equipment to perform various possible functions as in the second aspect or the second aspect.
  • the method in the implementation mode is not limited to.
  • the second UE sends a first indication message to the first UE to indicate the first PSFCH period, and the first UE determines the correct feedback resource according to the first PSFCH period and sends the feedback information, In turn, the second UE can receive correct feedback information, thereby achieving the purpose of improving data transmission efficiency.
  • FIG. 1A is a schematic diagram of a network architecture to which the method for determining feedback resources provided by an embodiment of the present invention is applicable;
  • FIG. 1B is a schematic diagram of another network architecture to which the method for determining feedback resources provided by an embodiment of the present invention is applicable;
  • FIG. 2 is a flowchart of a method for determining feedback resources provided by an embodiment of the present invention
  • FIG. 3 is a schematic diagram of the mapping of PSSCH subchannels and PSFCH feedback resources in the method for determining feedback resources provided by an embodiment of the present invention
  • FIG. 4 is a schematic diagram of the first PSFCH period in the method for determining feedback resources provided by an embodiment of the present invention
  • FIG. 5 is a flowchart of another method for determining feedback resources provided by an embodiment of the present invention.
  • FIG. 6 is a flowchart of yet another method for determining feedback resources according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of yet another method for determining feedback resources according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of yet another method for determining feedback resources according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of an apparatus for determining feedback resources according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of another feedback resource determining apparatus provided by an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a user equipment provided by an embodiment of the present invention.
  • two UEs perform direct communication (direct communication, or sidelink communication) through the direct link of the PC5 interface.
  • the UE that sends data is called the Transmitter (Tx) UE, and receives the data.
  • the UE is called a receiver (Receiver, Rx) UE.
  • the first method is scheduled resource allocation.
  • the Tx UE is in a radio resource control (Radio Resource Control, RRC) connection state.
  • RRC Radio Resource Control
  • the base station configures the transmission resources for direct communication through dedicated signaling; the other method is the automatic resource allocation method, in which the base station can use system messages or radio resource control (Radio Resource Control, RRC) signaling is the UE pre-configured or real-time configuration of the transmission resource pool used for direct communication.
  • RRC Radio Resource Control
  • Tx UE can be in any state, such as RRC connected state, RRC idle state or RRC inactive state. TxUE selects from the resource pool for direct communication. Communication resources.
  • the Tx UE uses the first or second method mentioned above to obtain resources; when the Tx UE is outside the network coverage, the Tx UE uses the second method mentioned above.
  • the Tx UE uses an automatic selection method to select resources for direct communication from a pre-configured resource pool.
  • the Tx UE is outside the network coverage, it means that the Tx UE cannot detect the cell on the frequency where the direct communication service is carried out, or the detected cell signal strength is lower than the preset threshold.
  • the direct communication service is, for example, V2X etc.
  • the UE accesses the network before it is outside the network coverage area, and the network side device configures the transmission resource pool used outside the network coverage area for it; or, it can be The operator directly writes the configuration information such as the transmission resource pool used outside the network coverage into the UE.
  • the fifth-generation mobile communication (fifth-generation, 5G) system can provide greater bandwidth, lower latency, etc.
  • Tx UE can use unicast, groupcast, or broadcast to transmit data .
  • a feedback mechanism is introduced. Based on the feedback mechanism, when the Tx UE determines that the Rx UE needs feedback, the Rx UE needs to determine an appropriate feedback resource (hereinafter also referred to as PSFCH resource) to perform feedback.
  • PSFCH resource an appropriate feedback resource
  • the network side equipment may configure the PSSCH of 1 time slot to correspond to the PSFCH in 1 time slot, that is, after the Tx UE sends control signaling and data to the Rx UE through the PSCCH and PSSCH in a time slot, Rx UE Send feedback information to the Tx UE through the PSFCH resource in a certain time slot later.
  • the mapping relationship between the number of PSSCH time slots and the number of PSFCH time slots is called the PSFCH cycle.
  • the PSFCH cycle is used to indicate the number of PSSCH time slots that can be fed back by the PSFCH on a time slot. It is assumed that the PSSCH and PSFCH are located at the same frequency or the same carrier frequency (Carrier).
  • the PSFCH period can be 1 time slot, 2 time slots, 4 time slots, etc., and can be specifically configured by the network side device, which is not limited in the embodiment of the present invention.
  • the Tx UE may send different data to two or more Rx UEs at the same time (in the same time slot or in different time slots).
  • HARQ Hybrid Automatic Repeat reQuest
  • Each Rx UE needs to feed back ACK or NACK to the Tx UE through PSFCH resources.
  • the Rx UE is within the coverage of the network side device, it can learn the PSFCH cycle through system messages or dedicated signaling sent by the network side device.
  • the Rx UE is outside the coverage of the network side device, it cannot receive system messages or dedicated signaling, so that the Rx UE cannot learn the correct PSFCH period and thus cannot determine the correct PSFCH resource.
  • the embodiments of the present invention provide a method and device for determining feedback resources.
  • the Rx UE obtains feedback resource information through a direct link, so that the Rx UE determines the correct feedback resource according to the obtained feedback resource information, so that the Tx UE can receive To the correct feedback information, to achieve the purpose of improving the efficiency of data transmission.
  • the first UE which can also be referred to as a receiver (Rx) UE, is used to receive unicast or multicast data transmitted by the second UE through the direct link between the first UE and the second UE, and determine whether Receive the data correctly, determine the feedback resource, and then use the feedback resource to send feedback information to the second UE to indicate to the second UE whether the data is received correctly.
  • Rx receiver
  • the second UE which may also be referred to as a Transmitter (Tx) UE, is used to send data to the first UE through the direct link between the first UE and the second UE, and to receive the first UE through the direct link. Feedback information sent by the UE.
  • Tx Transmitter
  • Feedback resources are resources used by Rx UE to send feedback information.
  • the first UE and the second UE are relative, not absolute.
  • the first UE is UE2 and the second UE is UE1;
  • UE1 is the receiving end UE and UE2 is the transmitting end UE, the first UE is UE1 and the second UE For UE2.
  • FIG. 1A is a schematic diagram of a network architecture to which the method for determining feedback resources provided by an embodiment of the present invention is applicable.
  • the network architecture is a device-to-device (D2D) communication network architecture.
  • D2D device-to-device
  • UE3 is outside the coverage of the cell of the base station, UE1 is the Tx UE, UE2 and UE3 are the Rx UE, a direct link is established between UE1 and UE2, and a direct link is established between UE1 and UE3, UE1 sends data to UE2 and UE3 at the same time (in the same time slot or in different time slots).
  • UE2 when UE2 and UE1 are in the same serving cell, UE2 can obtain the PSFCH cycle through the system message or dedicated information of the serving cell, and then determine the feedback resource according to the PSFCH cycle; when UE1 is in the serving cell and UE2 is in the serving cell In the neighboring cell, UE2 can obtain the PSFCH period through the system message of the neighboring cell.
  • the PSFCH period in the pre-configured parameters is 2 timeslots, and the base station is where UE1 is located.
  • the PSFCH period configured by the serving cell is 1 time slot.
  • UE3 Since UE3 cannot obtain the system message or dedicated information of the serving cell, UE3 cannot obtain the PSFCH period of the serving cell.
  • UE1 sends a first indication message to UE3 through the direct link between UE1 and UE3 to indicate the first PSFCH cycle to UE3, so that UE3 determines the feedback resource according to the first PSFCH cycle.
  • the first UE may be UE3, and the second UE may be UE1.
  • the embodiment of the present invention is not limited. As long as two UEs that can communicate directly, the Tx UE can send a first indication message to the Rx UE to indicate the first PSFCH cycle to the Rx UE.
  • the first UE is UE2, and the second UE is UE1.
  • FIG. 1B is a schematic diagram of another network architecture to which the method for determining feedback resources provided by an embodiment of the present invention is applicable.
  • the network architecture is a V2X communication network architecture.
  • V2X is the communication between the vehicle and the vehicle (V2V), the communication between the vehicle and the roadside infrastructure (V2I), the communication between the vehicle and the pedestrian (V2P), The general term for communications between vehicles and networks (V2N).
  • UEc is, for example, a roadside unit, and UE d is for pedestrians.
  • Mobile phones, etc. UE e is a server in V2X.
  • UEa, UEb, and UEc are within the coverage of the cell under the jurisdiction of the base station, and UEd and UEe are outside the coverage of the cell under the jurisdiction of the base station.
  • UEa serves as Tx UE, other UEs serve as Rx UEs, and direct links are established between UEa and each Rx UE.
  • UEb and UEc when UEa, UEb and UEc are in the same serving cell, UEb and UEc can obtain the PSFCH cycle through the system message or dedicated information of the serving cell, and then determine the feedback resource according to the PSFCH cycle; when UEa is in the serving cell When UEb and UEc are in neighboring cells of the serving cell, UEb and UEc can obtain the PSFCH period through the system message of the neighboring cell.
  • UEa sends a first indication message to UEd and UEe to indicate the first PSFCH cycle to UEd and UEe, so that UEd and UEe determine the feedback resource according to the first PSFCH cycle.
  • the first UE may be UEd or UEe, and the second UE may be UEa.
  • the embodiment of the present invention is not limited.
  • the Tx UE can send a first indication message to the Rx UE to indicate the first PSFCH cycle to the Rx UE.
  • the first UE is UEb or UEc, and the second UE is UEa.
  • the method of the present invention is not limited to unicast, and multicast is also applicable.
  • both Tx UE and Rx UE may be located outside the network coverage; or, it may also be that the Tx UE is outside the network coverage and the Rx UE is within the network coverage.
  • FIG. 2 is a flowchart of a method for determining feedback resources according to an embodiment of the present invention. This embodiment is described from the perspective of interaction between the first UE and the second UE. This embodiment includes:
  • the second UE determines the first indication message.
  • the first indication message is used to indicate the PSFCH period of the first physical unilateral link feedback channel.
  • the first PSFCH period, the second PSFCH period, and the PSFCH period configured by the serving cell appear in the embodiment of the present invention.
  • the first PSFCH period is the PSFCH period indicated by the second UE to the first UE and the first UE determines the actual use of the feedback resource.
  • the second PSFCH period is the network-side device or protocol for devices that are not in network coverage.
  • the Rx UE in the range is a pre-configured PSFCH period
  • the PSFCH period configured by the serving cell refers to the PSFCH period configured by the network side device for a serving cell and used in the process of developing V2X services.
  • the first PSFCH period and the second PSFCH period may be the same or different, and the first PSFCH period and the PSFCH period configured by the serving cell may be different or the same.
  • the second UE sends the first indication message to the first UE through a direct link.
  • the first UE receives the first indication message sent by the second UE through the direct link.
  • the first indication message is used to indicate the PSFCH period of the first physical unilateral link feedback channel, and the direct link is the direct link of the PC5 interface between the first UE and the second UE,
  • the first PSFCH period is used to indicate the number of physical unilateral link shared channel PSSCH time slots that can be fed back by the physical unilateral link feedback channel PSFCH in one time slot.
  • the first UE determines a feedback resource according to the first PSFCH period.
  • the feedback resource is used to carry the HARQ feedback information of hybrid automatic repeat transmission.
  • the feedback resource determined by the first UE is only used by the first UE. If the second UE uses multicast to send data to the members of the multicast group, and the first UE belongs to the multicast group (Group), the feedback resource determined by the first UE is not only used by the first UE, but also It is used by other members in the multicast group. At this time, each member in the multicast group uses the same feedback resource for feedback; or, other members in the multicast group can use the feedback resource and other offsets to determine their Independent feedback resources. At this time, each member in the multicast group uses independent feedback resources for feedback.
  • the second UE sends a first indication message to the first UE to indicate the first PSFCH period, and the first UE determines the correct feedback resource according to the first PSFCH period and sends the feedback information, In turn, the second UE can receive correct feedback information, thereby achieving the purpose of improving data transmission efficiency.
  • the system message or dedicated signaling of the network side device is configured with parameters for direct communication, including sharing transmission resources for multicast and unicast Pool and the feedback resource pool corresponding to the shared transmission resource pool.
  • the transmission resource pool can be configured according to the period. For example, in a period of 5 milliseconds (ms), the transmission resource pool is located in the second time slot, and the feedback resource pool is located in the last two symbols or the last symbol of the third time slot.
  • the mapping relationship between PSSCH time slots and PSFCH time slots is a 1:1 relationship, that is, the first PSFCH cycle is 1 time slot (or simply referred to as 1), that is, the first UE receives one After the PSSCH on the time slot, the PSFCH on one time slot needs to be used for feedback.
  • the frequency domain position and quantity of the transmission resource pool are configured by system messages or dedicated signaling, and the frequency domain position and quantity of the feedback resource pool are also configured by system messages or dedicated signaling.
  • the transmission resources in the transmission resource pool may be PSSCH sub-channels, etc., one PSSCH sub-channel may be multiple physical resource blocks, and the specific number may be set by system messages or dedicated signaling.
  • the second UE transmits unilateral link control information (SCI) on the PSCCH.
  • the SCI indicates the position of the PSSCH (that is, the time-frequency position of the PSSCH used by the V2X data), modulation and coding format and other parameters.
  • the second UE Data is transmitted on the PSSCH subchannel; after the first UE receives the SCI, it receives data from the PSSCH subchannel. Assume that the number of PSSCH subchannels is M, that is, the number of transmission resources is M.
  • the M PSSCH subchannels can be used by at most M second UEs that perform unicast respectively, or some of the M PSSCH subchannels can be used by the second UEs that perform unicast respectively, Or, the M PSSCH subchannels may be used by less than M second UEs performing unicast respectively, and some second UEs may use one or more PSSCH subchannels.
  • the M first UEs can determine their respective feedback resources in the following manner:
  • the PSSCH subchannel used by the second UE to send data is mapped to the feedback resource used by the first UE to send feedback information. That is to say, after the first UE receives the PSSCH, after the feedback resource is fed back for the specific PSSCH, the first UE can determine the feedback resource by the following formula (1):
  • the first reference parameter may be a parameter broadcast by the base station, or a parameter configured by the base station through dedicated signaling, or the first UE may determine it through a preset mapping relationship according to the PSSCH subchannel index, or may be determined from Obtained from the pre-configured parameters, the first reference parameter may be 0.
  • the PSSCH subchannel index in formula (1) may be the PSSCH subchannel index with the smallest index value among these PSSCH subchannels.
  • each first UE can determine the feedback resource according to the PSSCH subchannel received by itself, etc.
  • FIG. 3 is a schematic diagram of the mapping of PSSCH subchannels and PSFCH feedback resources in the method for determining feedback resources provided by an embodiment of the present invention.
  • M second UEs use different PSSCH sub-channels, and each PSSCH sub-channel corresponds to a PSFCH resource.
  • the first UE receives the PSSCH sub-channel, it determines the feedback resource based on the PSSCH sub-channel, and feedbacks the specific PSSCH in the feedback resource, that is, to the second UE that uses the PSSCH to transmit V2X data. .
  • the second UE sends data to multiple first UEs in the multicast group through a PSSCH subchannel.
  • a first UE in the multicast group determines the feedback resource
  • other members can share this Feedback resources; or, other members can determine independent feedback resources through the feedback resources and other offsets.
  • each feedback resource may occupy one or several independent physical resource blocks (Physical Resource Block, PRB), and the specific granularity is preset by network configuration or protocol.
  • PRB Physical Resource Block
  • each feedback resource can be reused.
  • one PRB may allow 4 first UEs to be multiplexed, and the 4 first UEs determine their respective independent feedback resources according to the above-mentioned manner, and then obtain the actual physical resources according to the multiplexing manner.
  • the multiplexing mode is that four first UEs multiplex the same physical resource
  • the four first UEs remap the determined PSFCH resource, such as a modulo 4 operation, so as to obtain the actual physical resource.
  • Each of the first UEs uses its own orthogonal code to achieve multiplexing. Taking the feedback resource indexes determined by the four first UEs as 4, 5, 6, and 7, as an example, according to the operation of modulo 4, these four first UEs are multiplexed on the same physical resource.
  • the first UE uses the first orthogonal code to perform direct link feedback on the physical resource; for the first UE whose index is 5 uses the second orthogonal code to perform direct link feedback on the physical resource; for the index of 6
  • the first UE uses the third orthogonal code to perform direct link feedback on the physical resource; for the first UE whose index is 7 uses the fourth orthogonal code to perform direct link feedback on the physical resource.
  • each first UE still needs to determine its own independent feedback resource according to the above method, and then determine the actual physical resource according to the multiplexing method.
  • the embodiment of the present invention does not limit whether the multiplexing mode is adopted.
  • the first PSFCH period may be greater than 1, that is, a scenario where the time slot where the PSSCH is located and the time slot where the PSFCH is located are many-to-one. Take 2 to 1 as an example, that is, the PSFCH on one time slot can feed back the PSSCH on 2 time slots.
  • FIG. 4 is a schematic diagram of the first PSFCH period in the method for determining feedback resources provided by an embodiment of the present invention.
  • the first PSFCH cycle is 1 time slot, and 1 PSSCH subchannel on time slot n corresponds to a PSFCH on time slot (n+k).
  • the first UE is in After receiving the PSSCH sub-channel on time slot n, determine the feedback resource (ie PSFCH resource) on the time slot (n+k), and feedback the PSSCH sub-channel on the feedback resource, that is, feedback on the sub-channel received
  • the status of the data such as ACK/NACK.
  • the first PSFCH cycle is 2 time slots, the PSSCH subchannel on time slot n and the PSSCH subchannel on time slot (n+1) both correspond to time slots (n+k) PSFCH on.
  • the first UE determines the feedback resource (ie PSFCH resource) on time slot (n+k), and responds to the feedback resource
  • the PSSCH subchannel on time slot n or time slot (n+1) performs feedback.
  • k is greater than 1, and the value of k depends on the minimum processing delay of the first UE, etc.
  • the feedback resource corresponding to the PSSCH subchannel of time slot n can be obtained by the above formula (1), and the PSSCH subchannel of time slot (n+1) corresponds to
  • the feedback resources of can be obtained by the following formula (2):
  • Index of feedback resource first reference parameter+PSSCH subchannel index+number of PSSCH subchannels (2)
  • the number of PSSCH sub-channels in a time slot is, for example, M. That is to say, the feedback resource corresponding to the PSSCH sub-channel in the feedback time slot n requires M feedback resources.
  • the feedback resource corresponding to the PSSCH subchannel in the feedback slot (n+1) occupies the next M feedback resources. In this way, the continuity of PSFCH resource allocation can be ensured, which is convenient for saving PSFCH resource overhead.
  • the PSSCH subchannel index in formula (2) may be the subchannel index with the smallest index value among the multiple PSSCH subchannels.
  • the first indication message when the second UE sends the first indication message to the first UE through the direct link, the first indication message may be carried in the sidelink control information (SCI) or RRC signaling .
  • SCI sidelink control information
  • RRC radio resource control
  • the second UE sends unilateral link control information SCI to the first UE through the direct link, and the SCI carries the first indication message; accordingly, the first UE receives the information from the first UE through the direct link.
  • the unilateral link control information SCI of the second UE is the unilateral link control information SCI of the second UE.
  • the PSFCH period supported by the system is limited, for example, only 1 time slot, 2 time slots, or 4 time slots are supported. Therefore, a 2-bit cell can be set in the SCI to indicate the first PSFCH cycle.
  • the value of a 2-bit cell may be 00, 01, and 10. When the value of this cell is 00, it means that the first PSFCH cycle is 1 time slot; when the value of this cell is 01, it means that the first PSFCH cycle is 2 time slots; when the value of this cell is 10 When, it means that the first PSFCH cycle is 4 time slots.
  • the second UE analyzes the SCI to determine the first PSFCH period.
  • the second UE carries the first indication message for indicating the first PSFCH period in the SCI and sends it to the first UE.
  • the first UE determines the correct feedback resource according to the first PSFCH period and sends the feedback information. , Thereby enabling the second UE to receive correct feedback information, thereby achieving the purpose of improving data transmission efficiency.
  • the second UE may send radio resource control RRC signaling to the first UE through the direct link, where the RRC signaling carries the first indication message.
  • the first UE receives radio resource control RRC signaling from the second UE through the direct link.
  • the second UE and the first UE carry out a unicast service
  • a PC5RRC connection can be established. Therefore, the second UE can indicate the first PSFCH period when sending PC5RRC signaling to the first UE.
  • the first UE may determine the first PSFCH period and determine the feedback resource.
  • the second UE carries the first indication message for indicating the first PSFCH period in RRC signaling and sends it to the first UE.
  • the first UE determines the correct feedback resource according to the first PSFCH period and sends it.
  • the feedback information enables the second UE to receive correct feedback information, thereby achieving the purpose of improving data transmission efficiency.
  • FIG. 5 is a flowchart of another method for determining feedback resources provided by an embodiment of the present invention.
  • the second UE determines whether the PSFCH period configured by the network side device for the serving cell is the same as the second PSFCH period.
  • This embodiment includes:
  • the second UE determines a PSFCH period configured by a serving cell where it is currently located.
  • the second UE can be UE2 or UEa, etc.
  • the second UE is within the coverage of the serving cell, and it can receive the system message or dedicated signaling of the serving cell sent by the base station.
  • the message or dedicated signaling determines the PSFCH period configured by the base station for the serving cell.
  • the second UE determines a second PSFCH period.
  • the second PSFCH period is a PSFCH period pre-configured by the network side device or protocol for the UE outside the coverage of the network side device.
  • the network-side device or protocol pre-configures a second PSFCH period, and stores the second PSFCH period in the pre-configuration parameter.
  • the second UE can obtain the second PSFCH period by reading the pre-configured parameter.
  • the second UE judges whether the PSFCH period configured by the serving cell is different from the second PSFCH period, and if the PSFCH period configured by the serving cell is different from the second PSFCH period, step 204 is performed; the PSFCH configured by the serving cell The period is the same as the second PSFCH period, and step 207 is executed.
  • the second UE performs step 204 to indicate the correct first PSFCH period to the first UE.
  • the second UE uses the PSFCH period configured by the serving cell as the first PSFCH period to generate the first indication message.
  • the second UE sends the first indication message to the first UE through a direct link.
  • the first UE receives the first indication message through the direct link.
  • the second UE may carry the first indication message in SCI or RRC signaling and send it to the first UE.
  • the first UE determines a feedback resource according to the first PSFCH period.
  • the first UE After determining the feedback resource, the first UE sends an ACK or NACK to the second UE on the feedback resource.
  • the second UE when the second UE determines that the PSFCH cycle configured by the base station for the serving cell is different from the second PSFCH cycle, it generates a first indication message for indicating the first PSFCH cycle and sends it to the first UE. According to the first PSFCH period, the correct feedback resource is determined and the feedback information is sent, so that the second UE receives the correct feedback information, thereby achieving the purpose of improving data transmission efficiency.
  • Fig. 6 is a flowchart of yet another method for determining feedback resources according to an embodiment of the present invention.
  • the first UE sends a second indication message to the second UE to indicate that it is outside the network coverage, and triggers the second UE to send a first indication message for indicating the first PSFCH period to the first UE.
  • This embodiment includes:
  • the first UE determines that it is outside the coverage area of a network side device.
  • the first UE can be UE3, UEd, UEe, etc.
  • the first UE can determine whether it is in the network coverage by detecting whether it can receive system messages or cell synchronization signals, etc. Outside.
  • outside the coverage of the network side device means that the first UE cannot detect any serving cell on the frequency point where the V2X service is carried out, or the synchronization signal of the detected cell on the frequency point The quality is below the preset threshold.
  • the first UE sends a second indication message to the second UE through the direct link to indicate to the second UE that the first UE is outside the coverage area of the network-side device.
  • the second UE receives the second indication message through the direct link.
  • the first UE when the first UE establishes a PC5RRC connection with the second UE, it indicates to the second UE that it is outside the coverage area of the network device.
  • the second UE determines the PSFCH period configured by the current serving cell.
  • the second UE is within the coverage of the serving cell, and it may receive the system message or dedicated signaling of the serving cell sent by the base station, and determine the PSFCH period configured by the base station for the serving cell according to the system message or dedicated signaling.
  • the second UE uses the PSFCH period configured by the serving cell as the first PSFCH period to generate the first indication message.
  • the second UE sends the first indication message to the first UE through a direct link.
  • the first UE receives the first indication message through the direct link.
  • the second UE may carry the first indication message in RRC signaling and send it to the first UE.
  • the first UE determines a feedback resource according to the first PSFCH period.
  • the first UE After determining the feedback resource, the first UE sends an ACK or NACK to the second UE on the determined feedback resource.
  • the time slot in which the feedback resource determined by the first UE is located has a definite timing relationship with the time slot in which the PSSCH subchannel for receiving V2X data by the first UE is located. For example, the first UE receives V2X data on the PSSCH subchannel in time slot n, In time slot n+k, ACK/NACK is sent to the Tx UE in the determined feedback resource.
  • the first UE when it determines that it is outside the coverage area of the network-side device, it sends a second indication message to the second UE indicating that it is outside the network coverage area, and receives the second indication message sent by the second UE.
  • the first indication message that includes the first PSFCH period, the first UE determines the correct feedback resource according to the first PSFCH period and sends the feedback information, so that the second UE receives the correct feedback information, which improves the efficiency of data transmission. purpose.
  • FIG. 7 is a flowchart of another method for determining feedback resources according to an embodiment of the present invention.
  • the first UE determines that it is outside the coverage of the network side device, it sends the second PSFCH period to the second UE, and the second UE determines the PSFCH period configured by the base station for the serving cell and the second PSFCH
  • This embodiment includes:
  • the first UE determines that it is outside the coverage area of the network side device.
  • the first UE can be UE3, UEd, UEe, etc.
  • the first UE can determine whether it is in the network coverage by detecting whether it can receive system messages or cell synchronization signals, etc. Outside.
  • the first UE determines a second PSFCH period.
  • the second PSFCH period is a PSFCH period pre-configured by the network side device or protocol for the UE outside the coverage of the network side device.
  • the first UE may determine the second PSFCH period through pre-configuration information and the like.
  • the first UE sends the second PSFCH period to the second UE.
  • the second UE receives the second PSFCH period.
  • the first UE sends the second PSFCH period to the second UE through a direct link.
  • the second UE determines the PSFCH period configured by the current serving cell.
  • the second UE is within the coverage of the serving cell, and it may receive the system message or dedicated signaling of the serving cell sent by the base station, and determine the PSFCH period configured by the base station for the serving cell according to the system message or dedicated signaling.
  • the second UE determines that the PSFCH period configured by the serving cell is different from the second PSFCH period, and if the PSFCH period configured by the serving cell is different from the second PSFCH period, step 406 is performed; the PSFCH period configured by the serving cell It is the same as the second PSFCH period, and step 409 is executed.
  • the second UE uses the PSFCH period configured by the serving cell as the first PSFCH period to generate the first indication message.
  • the second UE sends the first indication message to the first UE through a direct link.
  • the first UE receives the first indication message through the direct link.
  • the second UE may carry the first indication message in SCI or RRC signaling and send it to the first UE.
  • the first UE determines a feedback resource according to the first PSFCH period.
  • the first UE After determining the feedback resource, the first UE sends an ACK or NACK to the second UE on the feedback resource. Before the second UE does not update the first PSFCH period, the first UE uses the first PSFCH period to determine PSFCH resources.
  • the first UE when it determines that it is outside the coverage of the network-side device, it sends the second PSFCH period to the second UE, and the second UE determines the PSFCH period configured by the base station for the serving cell and the second
  • the first indication message for indicating the first PSFCH cycle is sent to the first UE.
  • the first UE determines the correct feedback resource according to the first PSFCH cycle and sends the feedback information, so that the second UE receives Correct feedback information can achieve the purpose of improving data transmission efficiency.
  • one Tx UE may use different frequencies to send data to the Rx UE.
  • the Rx UE needs to feed back to the Tx UE to feed back whether the Rx UE receives the data correctly. Therefore, each frequency corresponds to a different first indication message, that is, each frequency has a corresponding first PSFCH period, and the first PSFCH period on different frequencies may be the same or different.
  • FIG. 8 is a flowchart of another method for determining feedback resources provided by an embodiment of the present invention. This embodiment includes:
  • the second UE is using or will use at least two different frequencies to send data to the first UE through the direct link.
  • the first UE receives the data that the second UE is using or will use at least two different frequencies to send through the direct link.
  • the at least two different frequencies respectively correspond to respective first indication messages, that is, the PSFCH periods applied on different frequencies may be different or may be the same.
  • the second UE sends a first indication message corresponding to different frequencies of the at least two frequencies to the first UE through the direct link.
  • the first UE receives the at least two first indication messages sent by the second UE through the direct link.
  • the first UE determines the first PSFCH resource separately for each frequency. After the first UE receives the V2X data that needs to be fed back at a frequency, it determines that the second UE sends the first indication information corresponding to the frequency, that is, determines the PSFCH period applied on the frequency, and determines the first PSFCH resource according to the PSFCH period. Give feedback.
  • the second UE and the first UE carry out V2X data transmission on multiple frequencies.
  • HARQ feedback may be required only on some frequencies, or V2X data transmission on all frequencies may require feedback. Therefore, the second UE
  • the PSFCH period on all frequencies may be transmitted to the first UE, or the second UE may only transmit the PSFCH period on part of the frequencies to the first UE.
  • FIG. 9 is a schematic structural diagram of an apparatus for determining feedback resources according to an embodiment of the present invention.
  • the feedback resource determining apparatus 100 may be implemented in software and/or hardware. As shown in FIG. 9, the feedback resource determining device 100 includes:
  • the receiving unit 11 is configured to receive a first indication message from a second UE through a direct link, where the first indication message is used to indicate a PSFCH period of the first physical unilateral link feedback channel, and the direct link is the The direct link of the PC5 interface between the first UE and the second UE, the first PSFCH period is used to indicate the physical unilateral link feedback channel PSFCH in a time slot can be shared Channel PSSCH time slot number;
  • the processing unit 12 is configured to determine a feedback resource according to the first PSFCH period, where the feedback resource is used to carry hybrid automatic repeat HARQ feedback information.
  • the receiving unit 11 is configured to receive unilateral link control information SCI from the second UE through the direct link, and the SCI carries the first indication message;
  • the receiving unit 11 is configured to receive radio resource control RRC signaling from the second UE through the direct link, where the RRC signaling carries the first indication message.
  • the foregoing feedback resource determination apparatus 100 further includes: a sending unit 13, the processing unit 12, where the receiving unit 11 receives the second UE from the second UE through a direct link Before an indication message, it is also used to determine that it is outside the coverage of the network side device;
  • the sending unit 13 is configured to send a second indication message to the second UE through the direct link to indicate to the second UE that the first UE is outside the coverage area of the network side device .
  • the processing unit 12 before the receiving unit 11 receives the first indication message from the second UE through the direct link, the processing unit 12 is also used to determine that it is outside the coverage of the network side device, Determining a second PSFCH period, where the second PSFCH period is used to indicate a PSFCH period pre-configured by a network-side device or protocol for a UE outside the coverage of the network-side device;
  • the sending unit 13 is configured to send the second PSFCH period to the second UE.
  • the receiving unit 11 before receiving the first indication message from the second UE through the direct link, is also used for receiving or about to be received by the second UE using at least two different frequencies.
  • the at least two different frequencies respectively correspond to respective first indication messages;
  • the sending unit 13 is configured to receive the at least two first indication messages sent by the second UE through the direct link.
  • the feedback resource determining apparatus provided in the embodiment of the present invention can perform the actions of the first UE in the foregoing embodiment, and its implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 10 is a schematic structural diagram of another feedback resource determining apparatus provided by an embodiment of the present invention.
  • the feedback resource determining apparatus 200 may be implemented in software and/or hardware. As shown in FIG. 10, the feedback resource determination 200 includes:
  • the processing unit 21 is configured to determine a first indication message, where the first indication message is used to indicate the PSFCH period of the first physical unilateral link feedback channel;
  • the sending unit 22 is configured to send the first indication message to the first UE through a direct link, where the first indication message is used to indicate the PSFCH period of the first physical unilateral link feedback channel, and the direct link It is a direct link of the PC5 interface between the first UE and the second UE.
  • the sending unit 22 is configured to send unilateral link control information SCI to the first UE through the direct link, and the SCI carries the first indication message;
  • the sending unit 22 is configured to send radio resource control RRC signaling to the first UE through the direct link, where the RRC signaling carries the first indication message.
  • the processing unit 21 is configured to determine the PSFCH period configured by the current serving cell, and determine the second PSFCH period.
  • the foregoing feedback resource determining apparatus 200 further includes: a receiving unit 23, configured to receive a second indication message sent by the first UE through the direct link, and The second indication message is used to indicate that the first UE is outside the coverage area of the network side device;
  • the processing unit 21 is configured to determine the PSFCH period configured by the serving cell currently in, and use the PSFCH period configured by the serving cell as the first PSFCH period to generate the first indication message.
  • the receiving unit 23 is configured to receive a second PSFCH period sent by the first UE, and the second PSFCH period is a network-side device or protocol that is previously outside the coverage of the network-side device PSFCH period configured by the UE;
  • the processing unit 21 is configured to determine the PSFCH period configured by the current serving cell, determine that the PSFCH period configured by the serving cell is different from the second PSFCH period, and use the PSFCH period configured by the serving cell as the The first PSFCH period to generate the first indication message.
  • the sending unit 22 is configured to send data to the first UE through the direct link at least two different frequencies that are being used or will be used, and the at least two different frequencies respectively correspond to different
  • the first indication message is sent to the first UE through the direct link, and first indication messages corresponding to different frequencies of the at least two frequencies respectively.
  • the feedback resource determining apparatus provided in the embodiment of the present invention can perform the actions of the second UE in the foregoing embodiment, and its implementation principles and technical effects are similar, and details are not described herein again.
  • the above receiving unit may be a receiver in actual implementation, and the sending unit may be a transmitter in actual implementation, and the processing unit may be implemented in the form of software calling through processing elements; or in the form of hardware.
  • the processing unit may be a separate processing element, or it may be integrated in a chip of the above-mentioned device for implementation.
  • it may also be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device Call and execute the functions of the above processing unit.
  • all or part of these units can be integrated together or implemented independently.
  • the processing element described here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above method or each of the above units can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.
  • the above units may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (ASIC), or one or more microprocessors (Digital Signal Processor, DSP), or, one or more Field Programmable Gate Array (Field Programmable Gate Array, FPGA), etc.
  • ASIC application specific integrated circuits
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call program codes.
  • CPU central processing unit
  • these units can be integrated together and implemented in the form of a System-On-a-Chip (SOC).
  • SOC System-On-a-Chip
  • FIG. 11 is a schematic structural diagram of a user equipment provided by an embodiment of the present invention. As shown in FIG. 11, the user equipment 300 includes:
  • the memory 32 stores computer execution instructions
  • the processor 31 executes the computer-executable instructions stored in the memory 32, so that the processor 31 executes the feedback resource determination method performed by the first UE or the feedback resource determination method performed by the second UE.
  • the user equipment 300 further includes a communication component 33.
  • the processor 31, the memory 32, and the communication component 33 may be connected through a bus 34.
  • the embodiment of the present invention also provides a storage medium, the storage medium stores a computer-executable instruction, when the computer-executed instruction is executed by a processor, it is used to implement the feedback resource determination method executed by the first UE or the relay UE executed How to determine feedback resources.
  • the embodiment of the present invention also provides a computer program product, which is used to implement a feedback resource determination method executed by the first UE when the computer program product runs on the first UE; or, when the computer program is on the Relay UE During operation, it is used to implement the feedback resource determination method performed by the Relay UE.
  • the described devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the modules is only a logical function division, and there may be other divisions in actual implementation, for example, multiple modules can be combined or integrated. To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or modules, and may be in electrical, mechanical or other forms.
  • modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional modules in the various embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules may be integrated into one unit.
  • the units formed by the above-mentioned modules can be realized in the form of hardware, or in the form of hardware plus software functional units.
  • the above-mentioned integrated modules implemented in the form of software function modules may be stored in a computer readable storage medium.
  • the above-mentioned software function module is stored in a storage medium, and includes several instructions to make an electronic device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) execute the various embodiments of the present invention Part of the method.
  • processor may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), and Application Specific Integrated Circuit (ASIC). Wait.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in combination with the invention can be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the memory may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk storage, and may also be a U disk, a mobile hard disk, a read-only memory, a magnetic disk, or an optical disk.
  • NVM non-volatile storage
  • the bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into address bus, data bus, control bus, etc.
  • the bus in the drawings of the present invention is not limited to only one bus or one type of bus.
  • the above-mentioned storage medium can be realized by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Except for programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disks or optical disks.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable except for programmable read only memory
  • PROM programmable read only memory
  • ROM read only memory
  • magnetic memory flash memory
  • flash memory magnetic disks or optical disks.
  • optical disks any available medium that can be accessed by a general-purpose or special-purpose computer.
  • An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and can write information to the storage medium.
  • the storage medium may also be an integral part of the processor.
  • the processor and the storage medium may be located in Application Specific Integrated Circuits (ASIC).
  • ASIC Application Specific Integrated Circuits
  • the processor and the storage medium may also exist as discrete components in the terminal or server.
  • a person of ordinary skill in the art can understand that all or part of the steps in the foregoing method embodiments can be implemented by a program instructing relevant hardware.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the steps including the foregoing method embodiments are executed; and the foregoing storage medium includes: ROM, RAM, magnetic disk, or optical disk and other media that can store program codes.

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

Abstract

Les modes de réalisation de la présente invention concernent un procédé de détermination de ressource de rétroaction. Un second UE envoie un premier message d'indication au premier UE afin d'indiquer une première période de PSFCH, et le premier UE détermine une ressource de rétroaction correcte en fonction de la première période PSFCH et envoie des informations de rétroaction, de telle sorte que le second UE reçoit des informations de rétroaction correctes, ce qui permet d'atteindre l'objectif d'une amélioration de l'efficacité d'une transmission de données.
PCT/CN2020/109247 2019-08-14 2020-08-14 Procédé et dispositif de détermination de ressource de rétroaction Ceased WO2021027934A1 (fr)

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