WO2020088267A1 - 传输反馈方法及用户设备 - Google Patents

传输反馈方法及用户设备 Download PDF

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Publication number
WO2020088267A1
WO2020088267A1 PCT/CN2019/111842 CN2019111842W WO2020088267A1 WO 2020088267 A1 WO2020088267 A1 WO 2020088267A1 CN 2019111842 W CN2019111842 W CN 2019111842W WO 2020088267 A1 WO2020088267 A1 WO 2020088267A1
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Prior art keywords
target
source
information
time
sequence
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PCT/CN2019/111842
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English (en)
French (fr)
Inventor
冯媛
郑方政
赵锐
郑石磊
胡金玲
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电信科学技术研究院有限公司
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Priority to EP19880565.7A priority Critical patent/EP3876449A4/en
Priority to US17/290,359 priority patent/US11924833B2/en
Priority to KR1020217016556A priority patent/KR20210083339A/ko
Publication of WO2020088267A1 publication Critical patent/WO2020088267A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/1607Details of the supervisory signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055Physical resource allocation for ACK/NACK
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1861Physical mapping arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092Error control systems characterised by the topology of the transmission link
    • H04L2001/0093Point-to-multipoint
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource

Definitions

  • the present disclosure relates to the field of communication technology, and in particular, to a transmission feedback method and user equipment.
  • the vehicle-to-outside information exchange uses wireless communication between the vehicle and the vehicle, the vehicle and the road test infrastructure, and the vehicle and the passerby. Has become a research hotspot to solve road safety problems.
  • a PC5 interface (also called a straight-through chain) for transmitting data between user equipment (UE) and UE Road) can already support basic traffic transmission based on road safety.
  • IoV technology With the further development of IoV technology, some new application scenarios have emerged, such as: vehicle formation, advanced driving, sensor information sharing, and remote control applications. Some of these applications require communication between UEs within a group, or unicast communication between two UEs.
  • the feedback signal for the feedback signal, is to define whether to send a specific feedback resource or to send through the PSCCH and / or PSSCH, which is still under discussion. For the feedback resource, whether the source UE or the target UE indicates is still under discussion, and the specific indication has not been determined.
  • Some embodiments of the present disclosure provide a transmission feedback method and user equipment to solve the problems in the related art that no feedback resources are introduced for unicast and multicast transmission, and how feedback resources are sent and indicated.
  • Some embodiments of the present disclosure provide a transmission feedback method, including:
  • the unicast or multicast transmission status is determined.
  • the time-frequency transmission resources include at least:
  • PSCCH carries scheduling control information SCI
  • the SCI is used to indicate the position of the HARQ-ACK feedback channel information.
  • the step of sending the time-frequency transmission resource used to feed back the feedback information of unicast or multicast transmission to at least one target UE that establishes a connection with the source user equipment UE includes:
  • the step of establishing a connection with at least one target UE includes:
  • the source UE establishes a connection with one of the target UEs;
  • the source UE negotiates or interacts with one of the target UEs to determine the source identification and the target identification.
  • the step of establishing a connection with at least one target UE includes:
  • the source UE establishes a connection with at least two of the target UEs;
  • the source UE negotiates with or interacts with at least two of the target UEs to determine a target group identity and the respective identity information of the source UE and the target UE.
  • the step of autonomously selecting or receiving the time-frequency transmission resources allocated by the network-side device and sending the time-frequency transmission resources to the target UE includes:
  • the source UE autonomously selects one of the time-frequency transmission resources in a resource pool, and sends the autonomously selected time-frequency transmission resources to the target UE;
  • the network side device After the network side device allocates one time-frequency transmission resource according to the service delay requirement of the source UE and the processing capability of the target UE, receives the time-frequency transmission resource sent by the network-side device and Send to the target UE.
  • the scheduling control information SCI carried in the time-frequency transmission resource includes a target identification indication and an offset value indication
  • the SCI also includes a source identification indication or a session identification / sequence identification indication; or
  • the SCI may further include a source identification indication or a session identification / sequence identification in addition to the target identification indication Instructions.
  • the step of obtaining feedback information sent by the target UE on the time-frequency transmission resource includes:
  • a sequence correlation is used to detect a peak of sliding correlation on the HARQ-ACK feedback channel of the hybrid automatic repeat request confirmation of the time-frequency transmission resource to obtain the feedback information.
  • the step of obtaining the first sequence according to the SCI includes:
  • the source identifier When the source identifier is included in the SCI, obtain the first sequence generated by the target UE according to the system map and the source identifier; or
  • the target identification indication When the target identification indication is included in the SCI, obtain the first sequence generated by the target UE according to the target identification and the offset value, where the offset value is the offset value indicated in the SCI or the source UE An offset value determined through negotiation or interaction during connection with the target UE; or
  • the first sequence generated by the target UE according to the system map and the session identifier / sequence identifier is obtained.
  • the step of obtaining feedback information sent by the target UE on the time-frequency transmission resource includes:
  • a sequence correlation is used to detect a peak of sliding correlation on the HARQ-ACK feedback channel of the hybrid automatic repeat request confirmation of the time-frequency transmission resource to obtain the feedback information.
  • the step of obtaining feedback information sent by the target UE on the time-frequency transmission resource includes:
  • the correlation correlation is used to perform a sliding correlation detection peak, and when negative NACK information is detected according to a third sequence, stop the detection and determine to obtain Feedback;
  • the identification information of each target UE corresponds to different offsets.
  • the step of determining the transmission status of unicast or multicast according to the feedback information includes:
  • the target UE In the unicast communication mode, the target UE sends the feedback information only when the reception is successful, and in the multicast communication mode, the target UE sends the feedback information only when the reception fails.
  • the method further includes:
  • Some embodiments of the present disclosure also provide a transmission feedback method, including:
  • the target UE sends feedback information on the time-frequency transmission resource.
  • the time-frequency transmission resources include at least:
  • PSCCH carries scheduling control information SCI
  • the SCI is used to indicate the position of the HARQ-ACK feedback channel information.
  • the step of receiving the time-frequency transmission resource for feedback information of unicast or multicast transmission sent by the source user equipment UE includes:
  • the step of the target UE sending feedback information on the time-frequency transmission resource includes:
  • the SCI includes a target identification indication and an offset value indication
  • the SCI may also include a source identification indication or a session identification / sequence identification indication, where the source identification and target identification are between the target UE and the source UE Negotiation or interactive determination when establishing a connection;
  • the SCI may further include the target identifier indication. Including source identification indication or session identification / sequence identification indication.
  • the step of determining feedback information according to the unicast or multicast transmission status includes:
  • the target UE When the unicast transmission between the target UE and the source UE is successful, the target UE generates a first sequence carrying confirmation ACK information according to the SCI.
  • the step of the target UE generating a first sequence carrying confirmation ACK information according to the SCI includes:
  • the target UE When the source identification indication is included in the SCI, the target UE generates a first sequence according to the system mapping and the source identification; or
  • the target UE When the target identifier is included in the SCI, the target UE generates a first sequence according to the target identifier and the offset value; or
  • the target UE When there is a session identifier / sequence identifier indication in the SCI, the target UE generates a first sequence according to the system mapping and the session identifier / sequence identifier.
  • the step of sending the feedback information to the source UE through the HARQ-ACK feedback channel includes:
  • the target UE In the unicast communication mode, the target UE only sends the feedback information when the reception is successful.
  • the step of determining feedback information according to the unicast or multicast transmission status includes:
  • the target UE that fails to receive When the multicast transmission between the target UE and the source UE fails, the target UE that fails to receive generates a second sequence carrying negative NACK information according to the target group identifier, where the target group identifier is in at least two When the target UE establishes a multicast connection with the source UE, it is negotiated or determined interactively.
  • the step of determining feedback information according to the unicast or multicast transmission status includes:
  • the target UE that fails to receive When the multicast transmission between the target UE and the source UE fails, the target UE that fails to receive generates a third sequence carrying negative NACK information according to the target group identifier and corresponding identification information;
  • the target group identifier and the respective identification information of the source UE and the target UE are negotiated or determined interactively when at least two of the target UE and the source UE establish a connection, and the identification information of each target UE corresponds to Different offsets.
  • the step of sending the feedback information to the source UE through the HARQ-ACK feedback channel includes:
  • the target UE sends the feedback information only when reception fails.
  • the step of sending the feedback information to the source UE through the HARQ-ACK feedback channel includes:
  • the target UE sends the generated third sequence carrying the denied NACK information to the source UE through the HARQ-ACK feedback channel;
  • the target UE sends the feedback information only when reception fails.
  • the method further includes:
  • Some embodiments of the present disclosure provide a source user equipment, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor.
  • a transceiver executes the computer program, the following is realized step:
  • the processor is configured to: obtain feedback information sent by the target UE on the time-frequency transmission resource;
  • the unicast or multicast transmission status is determined.
  • the time-frequency transmission resources include at least:
  • PSCCH carries scheduling control information SCI
  • the SCI is used to indicate the position of the HARQ-ACK feedback channel information.
  • the transceiver when the transceiver sends the time-frequency transmission resources used to feed back the feedback information of unicast or multicast transmission to at least one target UE that establishes a connection with the source user equipment UE, it is also used to:
  • the transceiver when establishing a connection with at least one target UE, the transceiver is further used to:
  • connection establishment process negotiate with or interact with one of the target UEs to determine the source identification and the target identification.
  • the transceiver when establishing a connection with at least one target UE, the transceiver is further used to:
  • connection establishment process negotiate with or interact with at least two of the target UEs to determine a target group identification and identification information of the source UE and the target UE.
  • the transceiver autonomously selects or receives the time-frequency transmission resources allocated by the network-side device and sends the time-frequency transmission resources to the target UE, it is also used to:
  • the network side device After the network side device allocates one time-frequency transmission resource according to the service delay requirement of the source UE and the processing capability of the target UE, receives the time-frequency transmission resource sent by the network-side device and Send to the target UE.
  • the scheduling control information SCI carried in the time-frequency transmission resource includes a target identification indication and an offset value indication
  • the SCI also includes a source identification indication or a session identification / sequence identification indication; or
  • the SCI may further include a source identification indication or a session identification / sequence identification in addition to the target identification indication Instructions.
  • the processor when the processor obtains the feedback information sent by the target UE on the time-frequency transmission resource, the processor is also used to:
  • a sequence correlation is used to detect a peak of sliding correlation on the HARQ-ACK feedback channel of the hybrid automatic repeat request confirmation of the time-frequency transmission resource to obtain the feedback information.
  • the processor when the processor obtains the first sequence according to the SCI, the processor is further used to:
  • the source identifier When the source identifier is included in the SCI, obtain the first sequence generated by the target UE according to the system map and the source identifier; or
  • the target identification indication When the target identification indication is included in the SCI, obtain the first sequence generated by the target UE according to the target identification and the offset value, where the offset value is the offset value indicated in the SCI or the source UE An offset value determined through negotiation or interaction during connection with the target UE; or
  • the first sequence generated by the target UE according to the system map and the session identifier / sequence identifier is obtained.
  • the processor when the processor obtains the feedback information sent by the target UE on the time-frequency transmission resource, the processor is also used to:
  • a sequence correlation is used to detect a peak of sliding correlation on the HARQ-ACK feedback channel of the hybrid automatic repeat request confirmation of the time-frequency transmission resource to obtain the feedback information.
  • the processor when the processor obtains the feedback information sent by the target UE on the time-frequency transmission resource, the processor is also used to:
  • the correlation correlation is used to perform a sliding correlation detection peak, and when negative NACK information is detected according to a third sequence, stop the detection and determine to obtain Feedback;
  • the identification information of each target UE corresponds to different offsets.
  • the processor determines the unicast or multicast transmission status according to the feedback information, it is also used to:
  • the target UE In the unicast communication mode, the target UE sends the feedback information only when the reception is successful, and in the multicast communication mode, the target UE sends the feedback information only when the reception fails.
  • the transceiver when unicast or multicast transmission between the source UE and the target UE fails, the transceiver is also used to:
  • Some embodiments of the present disclosure provide a target user equipment, including: a transceiver, a memory, a processor, and a computer program stored on the memory and runable on the processor.
  • a target user equipment including: a transceiver, a memory, a processor, and a computer program stored on the memory and runable on the processor.
  • the time-frequency transmission resources include at least:
  • PSCCH carries scheduling control information SCI
  • the SCI is used to indicate the position of the HARQ-ACK feedback channel information.
  • the transceiver when the transceiver receives the time-frequency transmission resource sent by the source user equipment UE to feed back the feedback information of unicast or multicast transmission, it is also used to:
  • the transceiver when the transceiver sends feedback information on the time-frequency transmission resource, it is also used to:
  • the SCI includes a target identification indication and an offset value indication
  • the SCI may also include a source identification indication or a session identification / sequence identification indication, where the source identification and the target identification are between the target UE and the source UE Negotiate or determine interactively when establishing a connection; or
  • the SCI may further include the target identifier indication. Including source identification indication or session identification / sequence identification indication.
  • the transceiver determines the feedback information according to the unicast or multicast transmission status, it is also used to:
  • a first sequence carrying confirmation ACK information is generated according to the SCI.
  • the transceiver when the transceiver generates a first sequence carrying confirmation ACK information according to the SCI, it is also used to:
  • the first sequence is generated according to the system map and the source identification;
  • a first sequence is generated according to the target identifier and the offset value
  • the first sequence is generated according to the system map and the session ID / sequence ID.
  • the transceiver when the transceiver sends the feedback information to the source UE through the HARQ-ACK feedback channel, it is also used to:
  • the target UE In the unicast communication mode, the target UE only sends the feedback information when the reception is successful.
  • the transceiver determines the feedback information according to the unicast or multicast transmission status, it is also used to:
  • a second sequence carrying negative NACK information is generated according to the target group identifier, where the target group identifier establishes multicast with the source UE in at least two of the target UE Negotiation or interactive determination during connection.
  • the transceiver determines the feedback information according to the unicast or multicast transmission status, it is also used to:
  • the target group identifier and the respective identification information of the source UE and the target UE are negotiated or determined interactively when at least two of the target UE and the source UE establish a connection, and the identification information of each target UE corresponds to Different offsets.
  • the transceiver when the transceiver sends the feedback information to the source UE through the HARQ-ACK feedback channel, it is also used to:
  • the target UE sends the feedback information only when reception fails.
  • the transceiver when sending the feedback information to the source UE through the HARQ-ACK feedback channel, the transceiver is further used to:
  • the target UE sends the feedback information only when reception fails.
  • the transceiver After the transceiver sends feedback information on the time-frequency transmission resource, if unicast or multicast transmission between the source UE and the target UE is unsuccessful, it is also used to:
  • Some embodiments of the present disclosure provide a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the steps in the transmission feedback method described on the source user equipment side or the target user equipment side.
  • Some embodiments of the present disclosure also provide a source user equipment, including:
  • a first sending module configured to send the time-frequency transmission resources used to feed back the feedback information of unicast or multicast transmission to at least one target UE that establishes a connection with the source user equipment UE;
  • An obtaining module configured to obtain feedback information sent by the target UE on the time-frequency transmission resource
  • the determining module is used to determine the unicast or multicast transmission status based on the feedback information.
  • Some embodiments of the present disclosure also provide a target user equipment, including:
  • a receiving module configured to receive the time-frequency transmission resources sent by the source user equipment UE to feed back the feedback information of unicast or multicast transmission;
  • the second sending module is configured to send feedback information on the time-frequency transmission resource.
  • the time-frequency transmission resource used to feed back the feedback information of unicast or multicast transmission to at least one target UE that establishes a connection with the source UE; obtaining the feedback sent by the target UE on the time-frequency transmission resource Information; according to the feedback information obtained, determine the unicast or multicast transmission status between the source UE and the target UE, which can be achieved by introducing feedback resources to enable the source UE to obtain the transmission status information, thereby facilitating the source UE and the target UE
  • the retransmission is determined to ensure the communication between the source UE and the target UE, and solve the problem that no feedback resources are introduced for unicast and multicast transmission in the related art.
  • FIG. 1 shows a schematic diagram of a source user equipment side transmission feedback method according to some embodiments of the present disclosure
  • FIG. 2 shows a schematic diagram of a target user equipment side transmission feedback method according to some embodiments of the present disclosure
  • FIG. 3 shows a schematic structural diagram of a source user equipment provided by some embodiments of the present disclosure
  • FIG. 4 shows another schematic structural diagram of a source user equipment provided by some embodiments of the present disclosure
  • FIG. 5 is a schematic structural diagram of a target user equipment provided by some embodiments of the present disclosure.
  • FIG. 6 is another schematic structural diagram of a target user equipment provided by some embodiments of the present disclosure.
  • Some embodiments of the present disclosure provide a transmission feedback method, as shown in FIG. 1, including:
  • Step 101 Send a time-frequency transmission resource used for feeding back feedback information of unicast or multicast transmission to at least one target UE that establishes a connection with a source user equipment UE.
  • the transmission feedback method provided by some embodiments of the present disclosure is applied to a source UE, where the source UE first obtains time-frequency transmission resources for feeding back feedback information of unicast or multicast transmission, and sends the obtained time-frequency transmission resources to the source At least one target UE where the UE establishes a connection.
  • the source UE sends the acquired time-frequency transmission resources to a target UE.
  • the source UE forms a multicast group with two or more target UEs. When transmitting resources frequently, you need to send the time-frequency transmission resources to all target UEs in the group.
  • a time-frequency transmission resource in the resource pool can be selected by unicast transmission and multicast transmission at the same time, but for a specific transmission process, the time-frequency transmission resource can only be used for unicast transmission or only for multicast transmission.
  • Step 102 Obtain feedback information sent by the target UE on time-frequency transmission resources.
  • the target UE can determine the unicast or multicast transmission status according to the received time-frequency transmission resources, and then send feedback information to the source UE on the time-frequency transmission resources, At this point, the source UE can obtain the feedback information sent by a target UE during unicast transmission, and the feedback information sent by at least one target UE in the group during multicast transmission.
  • Step 103 Determine the unicast or multicast transmission status according to the feedback information.
  • the source UE After the source UE receives the feedback information sent by the target UE, it can obtain the unicast or multicast transmission status carried in the feedback information, that is, the source UE can determine the relationship between the source UE and the target UE according to the received feedback information. Unicast or multicast transmission status. In unicast communication mode, when the transmission between the source UE and the target UE is successful, the target UE can send feedback information. In multicast communication mode, when the transmission between the source UE and the target UE in the group fails, The target UE can send feedback information.
  • the source UE can resend the time-frequency transmission resources to the target UE to achieve retransmission between the source UE and the target UE.
  • the source UE can perform the next time when the next transmission block arrives. The transmission process.
  • the transmission feedback method of some embodiments of the present disclosure may enable the source UE to obtain transmission status information by introducing feedback resources, thereby facilitating retransmission determination between the source UE and the target UE, and ensuring communication between the source UE and the target UE.
  • the time-frequency transmission resources at least include: a physical pass-through shared channel PSSCH, a physical pass-through control channel PSCCH, and a hybrid automatic repeat request confirmation HARQ-ACK feedback channel
  • the PSCCH carries scheduling control information SCI, SCI It is used to indicate the location information of HARQ-ACK feedback channel.
  • the time-frequency transmission resources sent by the source UE to the target UE also include a hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) -acknowledgement (Acknowledgement, ACK) feedback channel, where time-frequency transmission
  • HARQ Hybrid Automatic Repeat Request
  • ACK Acknowledgement
  • the PSCCH in the resource carries scheduling control information (Sidelink Control Information, SCI).
  • SCI Servicelink Control Information
  • the SCI carried in the PSCCH can indicate the location information of the HARQ-ACK feedback channel, which can facilitate the target UE to send through the HARQ-ACK feedback channel in the subsequent process Feedback.
  • the step of sending the time-frequency transmission resources used to feed back the feedback information of unicast or multicast transmission to at least one target UE that establishes a connection with the source user equipment UE includes: establishing and Connection between a target UE; autonomously select or receive time-frequency transmission resources allocated by the network-side device, and send the time-frequency transmission resources to the target UE.
  • the source UE When the source UE sends time-frequency transmission resources to at least one target UE, the source UE first needs to establish a connection with at least one target UE.
  • the source UE In the unicast communication mode, the source UE establishes a connection with one target UE.
  • the source UE In the multicast communication mode, the source UE establishes a connection with at least two target UEs in the group.
  • the source UE can obtain time-frequency transmission resources in two ways. The first method is that the source UE directly selects the time-frequency transmission resources in the resource pool.
  • the second method is that the source UE receives the time-frequency transmission resources allocated by the network side device. The source UE uses either of the above two methods. After acquiring the time-frequency transmission resource, the time-frequency transmission resource may be sent to at least one target UE. Acquiring time-frequency transmission resources through any method can ensure the flexibility of the source UE in acquiring resources.
  • the steps of establishing a connection with at least one target UE include: in a unicast communication mode, the source UE establishes a connection with a target UE; during the establishment of the connection, the source UE negotiates with or interacts with a target UE Source identification and target identification.
  • the source UE For the unicast communication mode, the source UE needs to establish a connection with a target UE. During the establishment of the connection, the source UE and the target UE may determine the source identification and the target identification through negotiation or interaction.
  • the source identifier here corresponds to the source UE, and the target identifier corresponds to the target UE.
  • the step of establishing a connection with at least one target UE includes: in a multicast communication mode, the source UE establishes a connection with at least two target UEs; during the establishment of the connection, the source UE and at least two target UEs Negotiate or interact to determine a target group identification and the identification information of the source UE and the target UE.
  • the source UE For the multicast communication mode, the source UE needs to establish a connection with at least two target UEs in the multicast group. In the process of establishing a connection between the source UE and at least two target UEs, the source UE can communicate with at least two Each target UE determines a target group identifier through negotiation or interaction, and can also determine the identification information corresponding to the source UE and the identification information corresponding to the target UE through negotiation or interaction.
  • the target group identifier here represents an identifier corresponding to a multicast group formed by the source UE and at least two target UEs.
  • the step of autonomously selecting or receiving time-frequency transmission resources allocated by the network-side device and sending the time-frequency transmission resources to the target UE includes:
  • the source UE autonomously selects a time-frequency transmission resource in the resource pool and sends the independently selected time-frequency transmission resource to the target UE; or the network-side device allocates a time-frequency according to the source UE's service delay requirements and the target UE's processing capability After transmitting the resources, the time-frequency transmission resources sent by the network side device are received and sent to the target UE.
  • the source UE needs to autonomously select a time-frequency transmission resource in the resource pool, and then the source UE sends the autonomously selected time-frequency transmission resource to the target UE.
  • the network-side device needs to obtain the following information when allocating time-frequency transmission resources: receiving the short buffer status report (Buffer Status) (BSR) reported by the source UE, where the BSR contains the service ID (service identification) Information, the network-side device can determine whether to apply for unicast resources or multicast resources according to the mapping relationship between service ID and transmission mode, where the source UE can also directly indicate whether it is unicast in the BSR, or directly indicate that the number of members in the group is 2.
  • the network-side device can also receive the UE's assistant info (assistance information) reported by the source UE. A corresponding indication can be added to the UE's assistant info, which can directly indicate that it is unicast, or directly indicate that the number of members in the group is 2. At this point, the network-side device can determine that it is currently in the unicast communication mode.
  • the network side device also needs to obtain the service delay requirement of the source UE and the processing capability of the target UE.
  • the service delay requirements of the source UE can be known in the process of the related technology.
  • the network-side device can pass the packet priority (ProSe Per-Packet Priority, PPPP), logical channel group (Logical Channel Group, LCG) Or the enhanced quality of service (QOS) indicates the service delay requirement of the source UE.
  • PPPP Packe Per-Packet Priority
  • LCG Logical Channel Group
  • QOS enhanced quality of service
  • the network-side device can obtain information such as the processing capacity of the target UE and the geographic location of the target UE, but it does not know the information of the target UE to establish a connection.
  • the source UE can report relevant information to the network side device, so that the network side device can have a certain gain when performing PSSCH resource allocation and feedback resource allocation.
  • the target ID is a 24-bit L2 ID.
  • the network-side device performs certain association processing to obtain relevant information.
  • the network-side device may determine a time-frequency transmission resource and send it to the source UE.
  • the source UE may receive the time-frequency transmission resource sent by the network-side device Send to the target UE.
  • the source UE only needs to make an indication according to the corresponding mode on the direct link (sidelink, SL), and no further conversion is required.
  • this time-frequency transmission resource can be allocated by the network-side device.
  • the network-side device you need to know the following information or part of the information: receive the short buffer status report (Buffer Status Report (BSR) reported by the source UE, where the BSR contains service ID (service identification) information, and the network-side device can The mapping relationship between service ID and transmission mode determines whether to apply for unicast resources or multicast resources, but can not get the number of members in the group. Therefore, in the way of codeword differentiation, the size of feedback resources in time-frequency transmission resources cannot be determined .
  • the source UE can directly indicate the number of members in the group in the BSR.
  • the network-side device can also receive the UE assistant information (assistance information) reported by the source UE, and a corresponding indication can be added to the UE assistant information, which can directly indicate the number of members in the group. At this point, the network-side device can determine that it is currently in the multicast communication mode.
  • the network side device also needs to obtain the service delay requirements of the source UE and the processing capabilities of each target UE in the group.
  • the process of the source UE's service delay requirement in the related art can be known. Specifically, the source UE's service delay requirement can be obtained through PPPP, LCG, or enhanced QOS indication.
  • the processing capability of each target UE may not be required here. If the processing capability of the target UE is not known, the default minimum processing capability of the system may be determined as the processing capability of the target UE.
  • the source UE can receive the time-frequency transmission resource sent by the network-side device and send it to the target UE.
  • the target UE in the multicast group multiplexes a time-frequency transmission resource.
  • the scheduling control information SCI carried in the time-frequency transmission resource includes a target identification indication and an offset value indication, or the SCI includes the target identification indication , Also includes a source identification indication or a session identification / sequence identification indication; or if the source UE and the target UE simultaneously negotiate or interactively determine an offset value during connection, the SCI may include the target identification indication on the basis of including the target identification indication.
  • Source identification indication or session identification / sequence identification indication includes
  • the source UE and the target UE may determine the source ID and the target ID through negotiation or interaction.
  • the SCI carried by the time-frequency transmission resource may include a target identification indication and an offset value indication, or the SCI includes a source identification indication or a session identification / sequence identification indication in addition to the target identification indication.
  • the SCI at this time includes the target identifier indication, It may also include a source identification indication or a session identification / sequence identification indication.
  • the target identification indication is in the related art, and the offset value indication can be added on this basis, and the source identification indication or the session identification / sequence identification indication can also be added. If an offset is determined through negotiation or interaction
  • the shift value may optionally include only the target identification indication, and may also include the source identification indication or the session identification / sequence identification indication.
  • the step of obtaining the feedback information sent by the target UE on the time-frequency transmission resources includes: obtaining the first sequence according to the SCI; the hybrid automatic retransmission request confirmation HARQ-in the time-frequency transmission resources On the ACK feedback channel, sequence correlation is used to detect the peak of sliding correlation to obtain feedback information.
  • the source UE can obtain the first sequence according to the information contained in the SCI. After the SCI obtains the first sequence, the sequence correlation can be used on the HARQ-ACK feedback channel of the time-frequency transmission resource Slide correlation detection peaks to obtain feedback information. For unicast, feedback information can be detected only when the unicast transmission is successful.
  • the steps to obtain the first sequence according to the SCI include:
  • the source identification indication When the source identification indication is included in the SCI, obtain the first sequence generated by the target UE according to the system map and the source identification; or
  • the target identification indication is included in the SCI
  • the first sequence generated by the target UE according to the target identification and the offset value is obtained, and the offset value is the offset value indicated in the SCI or negotiated or interactively determined during the connection process between the source UE and the target UE Offset value; or
  • the first sequence generated by the target UE according to the system map and the session ID / sequence ID is obtained.
  • the first sequence can be obtained in different ways.
  • the source UE can obtain the target UE according to the system map and the source. Identify the first sequence generated.
  • the first sequence here may be an m sequence, but it is not limited to the m sequence.
  • the synchronization signal and demodulation reference signal (DMRS) in NR New RAT, New Radio Access Technology Both are m-sequence.
  • the source UE can obtain the first sequence generated by the target UE according to the system mapping and the session identification / sequence identification.
  • the target identification indication When the source identification indication or the session identification / sequence identification indication is not included in the SCI, the target identification indication must be included. At this time, the source UE can obtain the first sequence generated by the target UE according to the target identification and the offset value. If an offset value is determined through negotiation or interaction between the source UE and the target UE, the offset value used here may be the offset value determined through negotiation or interaction. When the offset value is not determined when the source UE and the target UE are connected, the offset value used here may be the offset value indicated in the SCI.
  • the step of acquiring the feedback information sent by the target UE on the time-frequency transmission resource includes: acquiring a second sequence generated by the target UE according to the target group identifier;
  • the hybrid automatic retransmission request of the frequency transmission resource confirms the peak correlation of the slide correlation detection on the HARQ-ACK feedback channel using sequence correlation to obtain feedback information.
  • the target UE in the multicast group fails to receive, the target UE that failed to receive can generate a second sequence according to the target group identifier determined in advance or through interaction, because each target UE is multiplexed in the same On the time-frequency transmission resource, the second sequence generated by different UEs that failed to receive according to the target group ID is the same.
  • the source UE can obtain a second sequence and use sequence correlation on the HARQ-ACK feedback channel of the time-frequency transmission resource. Perform slide correlation detection peaks to obtain feedback information. When the source UE obtains the feedback information, it can determine that the multicast transmission fails.
  • the step of obtaining the feedback information sent by the target UE on the time-frequency transmission resource further includes: obtaining a third sequence generated by at least one target UE according to the target group identification and corresponding identification information; Hybrid automatic retransmission request for high-frequency transmission resources to confirm the peak of sliding correlation detection using sequence correlation on the HARQ-ACK feedback channel, when negative NACK information is detected according to a third sequence, stop the detection and determine to obtain feedback information; wherein, each The identification information of the target UE corresponds to different offsets.
  • a target group identification and respective identification information of the source UE and the target UE are determined through negotiation or interaction when establishing a connection. For each target UE, different sequences or Offset, where the sequence or offset corresponds to the identification information of the target UE itself.
  • the target UE that fails to receive may generate a third sequence based on the target group identification and its own identification information that are pre-negotiated or interactively determined, because each target UE corresponds to different identification information, and the identification information of each target UE corresponds to a different bias Therefore, according to the target group identification and corresponding identification information, different target UEs with different reception failures generate different third sequences.
  • the target UE that fails to receive may send the generated third sequence to the source UE.
  • the source UE can use the sequence correlation to detect the peak of sliding correlation on the HARQ-ACK feedback channel of the time-frequency transmission resource.
  • the step of determining the unicast or multicast transmission status includes:
  • the target UE When receiving the acknowledgement ACK message sent by the target UE, determine that the unicast transmission between the source UE and the target UE is successful; when receiving the denial NACK message sent by the target UE, determine the multicast transmission between the source UE and the target UE Failure; wherein, in the unicast communication mode, the target UE sends feedback information only when the reception is successful, and in the multicast communication mode, the target UE sends feedback information only when the reception fails.
  • the source UE determines the unicast transmission status, if the received feedback information includes confirmation ACK information, it indicates that the unicast transmission between the source UE and the target UE is successful, and if the received feedback information includes denial of NACK information, It indicates that the multicast transmission between the source UE and the target UE fails.
  • the target UE in the unicast communication mode, can send feedback information only when the transmission is successful, and in the multicast communication mode, the target UE sends feedback information only when the transmission fails.
  • NACK NACK
  • the disadvantage is that there may be underreporting. For example, when the PSCCH reception fails, there is no way to make corresponding feedback. Similarly, if the ACK is received, no feedback is made. That is, for the source UE, there is no way to distinguish between these two cases. Therefore, it is stipulated that NACK is fed back only when multicast reception fails, ACK is fed back when unicast reception is successful, and no feedback is made in other cases.
  • the unicast or multicast transmission between the source UE and the target UE when the unicast or multicast transmission between the source UE and the target UE fails, it further includes: starting a retransmission process and sending the re-acquired time-frequency transmission resources to the target UE.
  • the source UE needs to start the retransmission process, and can reacquire the time-frequency transmission resource and send it to the target UE by autonomously selecting or receiving the allocation from the network test equipment.
  • the transmission feedback method transmits the time-frequency transmission resources used to feed back the feedback information of unicast or multicast transmission to at least one target UE that establishes a connection with the source UE; Feedback information sent on the frequency transmission resource; based on the obtained feedback information, the unicast or multicast transmission status between the source UE and the target UE can be determined.
  • the introduction of feedback resources can enable the source UE to obtain the transmission status information, thereby facilitating The retransmission determination between the source UE and the target UE ensures communication between the source UE and the target UE.
  • Some embodiments of the present disclosure provide a transmission feedback method, as shown in FIG. 2, including:
  • Step 201 Receive a time-frequency transmission resource sent by a source user equipment UE for feeding back feedback information of unicast or multicast transmission.
  • the transmission feedback method provided by some embodiments of the present disclosure is applied to a target UE, where the target UE first establishes a connection with the source UE.
  • a connection between a target UE and the source UE is sufficient.
  • at least two target UEs in the multicast group need to establish a connection with the source UE.
  • a target UE in the unicast state can receive the time-frequency transmission resources sent by the source UE.
  • each target UE in the group needs to receive the source UE. Time-frequency transmission resources.
  • Step 202 The target UE sends feedback information on the time-frequency transmission resources.
  • the unicast or multicast transmission status can be determined according to the received time-frequency transmission resources, and then feedback information is sent to the source UE on the time-frequency transmission resources.
  • the transmission feedback method of some embodiments of the present disclosure can implement transmission status information to the source UE by introducing feedback resources, thereby facilitating retransmission determination between the source UE and the target UE, and ensuring communication between the source UE and the target UE.
  • the time-frequency transmission resources at least include: a physical pass-through shared channel PSSCH, a physical pass-through control channel PSCCH, and a hybrid automatic repeat request confirmation HARQ-ACK feedback channel.
  • PSCCH carries scheduling control information SCI, SCI It is used to indicate the location information of HARQ-ACK feedback channel.
  • the time-frequency transmission resource received by the target UE also includes a HARQ-ACK feedback channel, where the PSCCH in the time-frequency transmission resource carries an SCI, and the SCI carried in the PSCCH can indicate HARQ-ACK
  • the position information of the feedback channel can further facilitate the target UE to send feedback information to the source UE through the HARQ-ACK feedback channel in the subsequent process.
  • the step of receiving the time-frequency transmission resource sent by the source user equipment UE for feeding back the feedback information of unicast or multicast transmission includes: establishing a connection with the source UE; receiving the source UE The transmitted time-frequency transmission resources.
  • the source UE When receiving the time-frequency transmission resources sent by the source UE, you first need to establish a connection with the source UE. In the unicast communication mode, a connection between a target UE and the source UE is sufficient. In the multicast communication mode, the group All target UEs establish a connection with the source UE. After the connection is established, the source UE can obtain time-frequency transmission resources in two ways. The first method is that the source UE directly selects the time-frequency transmission resources in the resource pool. The second method is that the source UE receives the time-frequency transmission resources allocated by the network side device. The source UE uses either of the above two methods. After acquiring the time-frequency transmission resources, the target UE may receive the time-frequency transmission resources allocated by the source UE through autonomous selection or by the network side device.
  • the step of the target UE sending feedback information on the time-frequency transmission resources includes: performing blind detection on the PSCCH to obtain the position information of the PSCCH, PSSCH, and HARQ-ACK feedback channels; and obtaining the position of the PSSCH After the information, the PSSCH is parsed to obtain the unicast or multicast transmission status, and the feedback information is determined according to the unicast or multicast transmission status; the feedback information is sent to the source UE through the HARQ-ACK feedback channel.
  • the target UE When sending feedback information, the target UE needs to process according to the received time-frequency transmission resources, specifically performing blind detection on the PSCCH in the time-frequency transmission resources, and obtaining the PSCCH, PSSCH, and HARQ-ACK feedback channels after the blind detection
  • the PSSCH After obtaining the position information of the PSSCH, the PSSCH can be further analyzed, and the unicast or multicast transmission status can be obtained according to the analysis result, and then the feedback information can be determined according to the acquired unicast or multicast transmission status.
  • the determined feedback information is sent to the source UE through the HARQ-ACK feedback channel.
  • the process of determining the feedback information according to the unicast or multicast transmission status and sending the feedback information to the source UE through the HARQ-ACK feedback channel is briefly described below for unicast and multicast, respectively.
  • the SCI includes the target identification indication and the offset value indication;
  • the SCI may also include a source identification indication or a session identification / sequence identification indication, where the source identification and target identification negotiate or interact when the target UE establishes a connection with the source UE OK; or
  • the SCI may include the source identification indication or the session in addition to the target identification indication Identification / sequence identification indication.
  • the source UE and the target UE may determine the source ID and the target ID through negotiation or interaction.
  • the SCI may include the target identification indication and the offset value indication, or in addition to the target identification indication, the SCI may also include the source identification indication or the session identification / sequence identification indication.
  • the SCI at this time includes the target identifier indication, It may also include a source identification indication or a session identification / sequence identification indication.
  • the target identification indication is in the related art, and the offset value indication can be added on this basis, and the source identification indication or the session identification / sequence identification indication can also be added. If an offset is determined through negotiation or interaction
  • the shift value may optionally include only the target identification indication, and may also include the source identification indication or the session identification / sequence identification indication.
  • the steps to determine the feedback information according to the unicast or multicast transmission status include:
  • the target UE When the unicast transmission between the target UE and the source UE is successful, the target UE generates a first sequence carrying confirmation ACK information according to the SCI.
  • the target UE can generate feedback information according to the SCI, and the feedback information at this time is the first sequence that carries the acknowledgement ACK information, and the unicast can be realized by the generated first sequence Determination of transmission status.
  • the step of the target UE generating the first sequence carrying the confirmation ACK information according to the SCI includes:
  • the target UE When the source identification indication is included in the SCI, the target UE generates the first sequence according to the system mapping and the source identification; or
  • the target UE When the target identification indication is included in the SCI, the target UE generates the first sequence according to the target identification and the offset value; or
  • the target UE When there is a session identifier / sequence identifier indication in the SCI, the target UE generates the first sequence according to the system mapping and the session identifier / sequence identifier.
  • the first sequence can be generated in different ways.
  • the target UE can generate the first sequence according to the system mapping and the source identification.
  • a sequence may be an m sequence, but it is not limited to the m sequence.
  • the synchronization signal and demodulation reference signal (DMRS) in NR New RAT, New Radio Access Technology Both are m-sequence.
  • the target UE may generate the first sequence according to the system mapping and the session identification / sequence identification.
  • the target identification indication When the source identification indication or the session identification / sequence identification indication is not included in the SCI, the target identification indication must be included, and the target UE may generate the first sequence according to the target identification and the offset value. If an offset value is determined through negotiation or interaction between the source UE and the target UE, the offset value used here may be the offset value determined through negotiation or interaction. When the offset value is not determined when the source UE and the target UE are connected, the offset value used here may be the offset value indicated in the SCI.
  • the step of sending the feedback information to the source UE through the HARQ-ACK feedback channel includes: sending the first sequence carrying the confirmation ACK information to the source UE through the HARQ-ACK feedback channel; In the communication mode, the target UE only sends feedback information when the reception is successful.
  • the first sequence may be sent to the source UE through the HARQ-ACK feedback channel, which in turn may enable the source UE to use sequence correlation on the HARQ-ACK feedback channel of the time-frequency transmission resource Perform sliding correlation peak detection to obtain feedback information about the success of unicast transmission.
  • the step of determining the feedback information according to the unicast or multicast transmission status includes: when the multicast transmission between the target UE and the source UE fails, the target UE that fails to receive generates a second sequence carrying a denial of NACK information according to the target group ID , Where the target group identifier is negotiated or determined interactively when at least two target UEs establish a multicast connection with the source UE.
  • the target UE that fails to receive can generate a second sequence according to the target group identifier determined when the connection is established, because each target UE is multiplexed on the same time-frequency transmission resource Therefore, the second sequence generated by the UE that fails to receive according to the target group identifier is the same, and the generated second sequence carries denial NACK information, and the source UE can determine that the multicast transmission fails according to the second sequence.
  • the step of sending the feedback information to the source UE through the HARQ-ACK feedback channel includes: sending the second sequence carrying the denied NACK information to the source UE through the HARQ-ACK feedback channel; wherein in the multicast communication mode, only the receiving When it fails, the target UE sends feedback information.
  • the second sequence carrying the denied NACK information can be sent to the source UE through the HARQ-ACK feedback channel, and the source UE can transmit the On the HARQ-ACK feedback channel, sequence correlation is used to perform sliding correlation peak detection to obtain feedback information about the failure of multicast transmission.
  • the step of determining the feedback information according to the unicast or multicast transmission status further includes: when the multicast transmission between the target UE and the source UE fails, the target UE that fails to receive generates and carries according to the target group identification and the corresponding identification information Denies the third sequence of NACK information; where the target group identification and the respective identification information of the source UE and the target UE are negotiated or determined interactively when at least two target UEs establish a connection with the source UE, and the identification information of each target UE corresponds to a different Offset.
  • the source UE and the target UE negotiate or interact with each other to determine a target group identification and the respective identification information of the source UE and the target UE when establishing a connection. For each target UE, a different sequence or Offset, where the sequence or offset corresponds to the identification information of the target UE itself.
  • the target UE that fails to receive may generate a third sequence based on the target group identification and its own identification information that are pre-negotiated or interactively determined, because each target UE corresponds to different identification information, and the identification information of each target UE corresponds to a different bias Therefore, according to the target group identification and corresponding identification information, different target UEs with different reception failures generate different third sequences.
  • the target UE that fails to receive may send the generated third sequence to the source UE.
  • the source UE can use the sequence correlation to detect the peak of sliding correlation on the HARQ-ACK feedback channel of the time-frequency transmission resource.
  • the step of sending the feedback information to the source UE through the HARQ-ACK feedback channel includes: the target UE sends the generated third sequence carrying the denied NACK information to the source UE through the HARQ-ACK feedback channel; wherein in the multicast communication mode The target UE sends feedback information only when reception fails.
  • the target UE may send the generated third sequence carrying the NACK information to the source UE through the HARQ-ACK feedback channel
  • the target UE here is a target UE that fails to receive, and the number of target UEs that fails to receive is at least one.
  • the source UE can use the sequence correlation to detect the peak of sliding correlation on the HARQ-ACK feedback channel of the time-frequency transmission resource.
  • negative NACK information is detected according to a third sequence, stop the detection and determine to obtain feedback information on the failure of multicast transmission . That is, the detection process can be stopped when NACK information is detected.
  • feedback information carrying negative NACK information is sent when transmission fails, and the source UE can confirm the failure of multicast transmission according to the feedback information.
  • the target UE after the target UE sends feedback information on the time-frequency transmission resource, if unicast or multicast transmission between the source UE and the target UE is unsuccessful, it also includes: determining to start the retransmission process, Receive the re-acquired time-frequency transmission resources sent by the source UE.
  • the source UE When the unicast or multicast transmission fails, the source UE needs to start the retransmission process.
  • the source UE can reacquire and send the time-frequency transmission resources by autonomously selecting or receiving the allocation from the network test equipment, and the target UE can receive the source UE at this time. Reacquired time-frequency transmission resources.
  • the transmission feedback method provided by some embodiments of the present disclosure can be sent to the source by receiving the time-frequency transmission resource sent by the source UE to feed back the feedback information of unicast or multicast transmission, and sending the feedback information on the time-frequency transmission resource.
  • the UE feeds back the unicast or multicast transmission status, and enables the source UE to obtain transmission status information by introducing feedback resources, thereby facilitating the retransmission determination between the source UE and the target UE, and ensuring communication between the source UE and the target UE.
  • the network side device generally refers to a base station.
  • the form of the base station is not limited, and may be a macro base station (Macro Base Station), a micro base station (Pico Base Station), a Node B (3G mobile base station), an enhanced base station (eNB) , Home enhanced base station (Femto eNB or Home eNode B or Home eNB or HeNB), relay station, access point, RRU (Remote Radio Unit), RRH (Remote Radio Head), 5G Network-side nodes in mobile communication systems, such as Central Unit (CU) and Distributed Unit (DU), etc.
  • CU Central Unit
  • DU Distributed Unit
  • some embodiments of the present disclosure also provide an apparatus for implementing the above method.
  • FIG. 3 is a schematic structural diagram of a source user equipment provided by some embodiments of the present disclosure.
  • the source user equipment 300 includes: a processor 301, a transceiver 302, a memory 303, a user interface 304, and a bus interface, where:
  • the source user equipment 300 further includes: a computer program stored on the memory 303 and executable on the processor 301.
  • the transceiver 302 is used to read the program in the memory 303 and perform the following processes:
  • the processor 301 is configured to: obtain feedback information sent by the target UE on time-frequency transmission resources; and determine the unicast or multicast transmission status according to the feedback information.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 301 and various circuits of the memory represented by the memory 303 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be further described in this article.
  • the bus interface provides an interface.
  • the transceiver 302 may be a plurality of elements, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium.
  • the user interface 304 may also be an interface that can be externally connected to the required device.
  • the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, and a joystick.
  • the processor 301 is responsible for managing the bus architecture and general processing, and the memory 303 may store data used by the processor 301 in performing operations.
  • the time-frequency transmission resources include at least:
  • the PSCCH carries scheduling control information SCI, which is used to indicate the location information of the HARQ-ACK feedback channel.
  • the transceiver 302 sends the time-frequency transmission resources used to feed back the feedback information of unicast or multicast transmission to at least one target UE that establishes a connection with the source user equipment UE, and is also used to:
  • the transceiver 302 when establishing a connection with at least one target UE, the transceiver 302 is also used to:
  • connection establishment process negotiate with or interact with a target UE to determine the source identification and target identification.
  • the transceiver 302 when establishing a connection with at least one target UE, the transceiver 302 is also used to:
  • the transceiver 302 autonomously selects or receives the time-frequency transmission resources allocated by the network-side device and sends the time-frequency transmission resources to the target UE, it is also used to:
  • the network-side device After the network-side device allocates a time-frequency transmission resource according to the service delay requirement of the source UE and the processing capability of the target UE, the time-frequency transmission resource sent by the network-side device is received and sent to the target UE.
  • the scheduling control information SCI carried in the time-frequency transmission resource includes a target identification indication and an offset value indication
  • the SCI also includes the source identification indication or the session identification / sequence identification indication; or
  • the SCI may further include a source identification indication or a session identification / sequence identification indication on the basis of including the target identification indication.
  • the processor 301 when acquiring the feedback information sent by the target UE on the time-frequency transmission resource, the processor 301 is also used to:
  • Sequence correlation is used to detect the peak of sliding correlation on the HARQ-ACK feedback channel of the hybrid automatic retransmission request confirmation of time-frequency transmission resources to obtain feedback information.
  • processor 301 when the processor 301 obtains the first sequence according to the SCI, it is also used to:
  • the source identification indication When the source identification indication is included in the SCI, obtain the first sequence generated by the target UE according to the system map and the source identification; or
  • the target identification indication is included in the SCI
  • the first sequence generated by the target UE according to the target identification and the offset value is obtained, and the offset value is the offset value indicated in the SCI or negotiated or interactively determined during the connection process between the source UE and the target UE Offset value; or
  • the first sequence generated by the target UE according to the system map and the session ID / sequence ID is obtained.
  • the processor 301 when acquiring the feedback information sent by the target UE on the time-frequency transmission resource, the processor 301 is also used to:
  • Sequence correlation is used to detect the peak of sliding correlation on the HARQ-ACK feedback channel of the hybrid automatic retransmission request confirmation of time-frequency transmission resources to obtain feedback information.
  • the processor 301 when acquiring the feedback information sent by the target UE on the time-frequency transmission resource, the processor 301 is also used to:
  • the identification information of each target UE corresponds to different offsets.
  • the processor 301 determines the unicast or multicast transmission status according to the feedback information, it is also used to:
  • the target UE In the unicast communication mode, the target UE sends feedback information only when the reception is successful, and in the multicast communication mode, the target UE sends feedback information only when the reception fails.
  • the transceiver 302 is also used to:
  • a computer-readable storage medium on which a computer program is stored, which when executed by the transceiver implements the following steps: feedback that will be used for feedback unicast or multicast transmission
  • the time-frequency transmission resource of the information is sent to at least one target UE that establishes a connection with the source user equipment UE; when executed by the processor, the following steps are implemented: obtaining feedback information sent by the target UE on the time-frequency transmission resource; based on the feedback information, determining Unicast or multicast transmission status.
  • some embodiments of the present disclosure provide another source user equipment 400, including:
  • the first sending module 401 is configured to send the time-frequency transmission resources used to feed back the feedback information of unicast or multicast transmission to at least one target UE that establishes a connection with the source user equipment UE;
  • the obtaining module 402 is used to obtain feedback information sent by the target UE on time-frequency transmission resources;
  • the determining module 403 is used to determine the unicast or multicast transmission status according to the feedback information.
  • the time-frequency transmission resources include at least:
  • the PSCCH carries scheduling control information SCI, which is used to indicate the location information of the HARQ-ACK feedback channel.
  • the first sending module :
  • a first establishment submodule used to establish a connection with at least one target UE
  • the first sending submodule is used to autonomously select or receive the time-frequency transmission resources allocated by the network-side device, and send the time-frequency transmission resources to the target UE.
  • the first establishment sub-module is further used for:
  • connection establishment process negotiate with or interact with a target UE to determine the source identification and target identification.
  • the first establishment sub-module is further used for:
  • the first sending submodule is further used for:
  • the network-side device After the network-side device allocates a time-frequency transmission resource according to the service delay requirement of the source UE and the processing capability of the target UE, the time-frequency transmission resource sent by the network-side device is received and sent to the target UE.
  • the scheduling control information SCI carried in the time-frequency transmission resource includes a target identification indication and an offset value indication;
  • the SCI also includes the source identification indication or the session identification / sequence identification indication; or
  • the SCI may further include a source identification indication or a session identification / sequence identification indication on the basis of including the target identification indication.
  • the acquisition module includes:
  • the first obtaining sub-module is used to obtain the first sequence according to the SCI;
  • the second obtaining submodule is used to perform sequence correlation to detect the peak of sliding correlation on the HARQ-ACK feedback channel of the hybrid automatic repeat request for time-frequency transmission resource to obtain feedback information.
  • the first acquisition submodule is further used for:
  • the source identification indication When the source identification indication is included in the SCI, obtain the first sequence generated by the target UE according to the system map and the source identification; or
  • the target identification indication is included in the SCI
  • the first sequence generated by the target UE according to the target identification and the offset value is obtained, and the offset value is the offset value indicated in the SCI or negotiated or interactively determined during the connection process between the source UE and the target UE Offset value; or
  • the first sequence generated by the target UE according to the system map and the session ID / sequence ID is obtained.
  • the acquisition module also includes:
  • a third obtaining submodule configured to obtain a second sequence generated by the target UE according to the target group identifier
  • the fourth acquisition sub-module is used to confirm the peak value of the sliding correlation detection using the sequence correlation on the HARQ-ACK feedback channel of the hybrid automatic repeat request for time-frequency transmission resources to obtain feedback information.
  • the acquisition module also includes:
  • a fifth obtaining submodule configured to obtain a third sequence generated by at least one target UE according to the target group identifier and corresponding identification information
  • the sixth acquisition sub-module is used to confirm the peak of sliding correlation detection using sequence correlation on the HARQ-ACK feedback channel of the hybrid automatic repeat request for time-frequency transmission resources, and stops when the negative NACK information is detected according to a third sequence Detect and determine to obtain feedback information;
  • the identification information of each target UE corresponds to different offsets.
  • the determination module is further used for:
  • the target UE In the unicast communication mode, the target UE sends feedback information only when the reception is successful, and in the multicast communication mode, the target UE sends feedback information only when the reception fails.
  • the source user equipment when the unicast or multicast transmission between the source UE and the target UE fails, the source user equipment further includes:
  • the first processing module is used to start a retransmission process and send the re-acquired time-frequency transmission resources to the target UE.
  • the source user equipment of some embodiments of the present disclosure sends the time-frequency transmission resources used to feed back the feedback information of unicast or multicast transmission to at least one target UE that establishes a connection with the source UE; Feedback information sent on the transmission resources; based on the obtained feedback information, the unicast or multicast transmission status between the source UE and the target UE can be determined, and the introduction of feedback resources can enable the source UE to obtain the transmission status information, thereby facilitating the source
  • the retransmission determination between the UE and the target UE ensures communication between the source UE and the target UE.
  • some embodiments of the present disclosure provide a schematic structural diagram of the target user equipment 500, including: a processor 501, a transceiver 502, a memory 503, and a bus interface, where:
  • the target user equipment 500 further includes: a computer program stored on the memory 503 and executable on the processor 501.
  • the transceiver 502 is used to read the program in the memory 503 and perform the following processes: receiving time-frequency transmission resources for feedback information for unicast or multicast transmission sent by the source user equipment UE; in time-frequency transmission resources Send feedback on
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 501 and various circuits of the memory represented by the memory 503 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be further described in this article.
  • the bus interface provides an interface.
  • the transceiver 502 may be a plurality of elements, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium.
  • the processor 501 is responsible for managing the bus architecture and general processing, and the memory 503 may store data used by the processor 501 in performing operations.
  • the time-frequency transmission resources include at least: a physical pass-through shared channel PSSCH, a physical pass-through control channel PSCCH, and a hybrid automatic repeat request confirmation HARQ-ACK feedback channel.
  • PSSCH physical pass-through shared channel
  • PSCCH physical pass-through control channel
  • SCI scheduling control information
  • the transceiver 502 when the transceiver 502 receives the time-frequency transmission resource sent by the source user equipment UE to feed back the feedback information of unicast or multicast transmission, it is also used to:
  • the transceiver 502 when the transceiver 502 sends feedback information on the time-frequency transmission resources, it is also used to:
  • the SCI includes a target identification indication and an offset value indication
  • the SCI may also include a source identification indication or a session identification / sequence identification indication, where the source identification and target identification negotiate or interact when the target UE establishes a connection with the source UE OK; or
  • the SCI may include the source identification indication or the session in addition to the target identification indication Identification / sequence identification indication.
  • the transceiver 502 determines the feedback information according to the unicast or multicast transmission status, it is also used to:
  • a first sequence carrying confirmation ACK information is generated according to the SCI.
  • the transceiver 502 when the transceiver 502 generates the first sequence carrying confirmation ACK information according to the SCI, it is also used to:
  • the first sequence is generated according to the system map and the source identification;
  • the first sequence is generated according to the target identification and the offset value
  • the first sequence is generated according to the system map and the session ID / sequence ID.
  • the transceiver 502 when the transceiver 502 sends the feedback information to the source UE through the HARQ-ACK feedback channel, it is also used to:
  • the target UE In the unicast communication mode, the target UE only sends feedback information when the reception is successful.
  • the transceiver 502 determines the feedback information according to the unicast or multicast transmission status, it is also used to:
  • a second sequence carrying negative NACK information is generated according to the target group identifier, where the target group identifier is negotiated or determined interactively when at least two target UEs establish a multicast connection with the source UE .
  • the transceiver 502 determines the feedback information according to the unicast or multicast transmission status, it is also used to:
  • a third sequence carrying denial of NACK information is generated according to the target group identification and corresponding identification information
  • the target group identification and the identification information of the source UE and the target UE are negotiated or determined interactively when at least two target UEs establish a connection with the source UE, and the identification information of each target UE corresponds to a different offset.
  • the transceiver 502 when the transceiver 502 sends the feedback information to the source UE through the HARQ-ACK feedback channel, it is also used to:
  • the target UE In the multicast communication mode, the target UE only sends feedback information when the reception fails.
  • the transceiver 502 when sending the feedback information to the source UE through the HARQ-ACK feedback channel, the transceiver 502 is also used to:
  • the generated third sequence carrying the NACK information is sent to the source UE through the HARQ-ACK feedback channel; in the multicast communication mode, the target UE sends feedback information only when the reception fails.
  • the transceiver 502 sends feedback information on the time-frequency transmission resources, if the unicast or multicast transmission between the source UE and the target UE is unsuccessful, it is also used to:
  • a computer-readable storage medium on which a computer program is stored, which when executed by a transceiver implements the following steps: receiving the source user equipment UE for feedback unicast Or the time-frequency transmission resources of the feedback information transmitted by multicast; send the feedback information on the time-frequency transmission resources.
  • the target user equipment 600 includes:
  • the receiving module 601 is configured to receive time-frequency transmission resources sent by the source user equipment UE to feed back the feedback information of unicast or multicast transmission;
  • the second sending module 602 is used to send feedback information on time-frequency transmission resources.
  • the time-frequency transmission resources include at least:
  • the PSCCH carries scheduling control information SCI, which is used to indicate the location information of the HARQ-ACK feedback channel.
  • the receiving module includes:
  • the second establishment sub-module is used to establish a connection with the source UE
  • the receiving submodule is used to receive the time-frequency transmission resource sent by the source UE.
  • the second sending module includes:
  • the seventh obtaining sub-module is used to perform blind detection on the PSCCH and obtain the position information of the PSCCH, PSSCH, and HARQ-ACK feedback channels;
  • the determination sub-module is used to analyze the PSSCH to obtain the unicast or multicast transmission status after acquiring the position information of the PSSCH, and determine the feedback information according to the unicast or multicast transmission status;
  • the second sending submodule is used to send the feedback information to the source UE through the HARQ-ACK feedback channel.
  • the SCI includes a target identification indication and an offset value indication
  • the SCI may also include a source identification indication or a session identification / sequence identification indication, where the source identification and the target identification negotiate or interact when the target UE establishes a connection with the source UE OK; or
  • the SCI may include the source identification indication or the session in addition to the target identification indication Identification / sequence identification indication.
  • the determination submodule is further used for:
  • a first sequence carrying confirmation ACK information is generated according to the SCI.
  • the determination submodule is also used for:
  • the first sequence is generated according to the system map and the source identification;
  • the first sequence is generated according to the target identification and the offset value
  • the first sequence is generated according to the system map and the session ID / sequence ID.
  • the second sending submodule is further used for:
  • the target UE In the unicast communication mode, the target UE only sends feedback information when the reception is successful.
  • the determination submodule is also used for:
  • a second sequence carrying negative NACK information is generated according to the target group identifier, where the target group identifier is negotiated or determined interactively when at least two target UEs establish a multicast connection with the source UE .
  • the determination submodule is also used for:
  • a third sequence carrying denial of NACK information is generated according to the target group identification and corresponding identification information
  • the target group identification and the identification information of the source UE and the target UE are negotiated or determined interactively when at least two target UEs establish a connection with the source UE, and the identification information of each target UE corresponds to a different offset.
  • the second sending submodule is also used for:
  • the target UE In the multicast communication mode, the target UE only sends feedback information when the reception fails.
  • the second sending submodule is also used for:
  • the target UE In the multicast communication mode, the target UE only sends feedback information when the reception fails.
  • the target user equipment After the second sending module sends feedback information on the time-frequency transmission resource, if unicast or multicast transmission between the source UE and the target UE is unsuccessful, the target user equipment further includes:
  • the second processing module is used to determine to start the retransmission process and receive the re-acquired time-frequency transmission resources sent by the source UE.
  • the target user equipment of some embodiments of the present disclosure by receiving the time-frequency transmission resources for feedback information of unicast or multicast transmission sent by the source UE, and sending the feedback information on the time-frequency transmission resources, can send the source UE
  • the feedback of unicast or multicast transmission status enables the source UE to obtain transmission status information by introducing feedback resources, thereby facilitating the retransmission determination between the source UE and the target UE, and ensuring communication between the source UE and the target UE.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into 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 units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of some embodiments of the present disclosure.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present disclosure essentially or part of the contribution to the related technology or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a storage medium, including several
  • the instructions are used to cause a computer device (which may be a personal computer, a server, or a base station, etc.) to perform all or part of the steps of the methods of the embodiments of the present disclosure.
  • the foregoing storage media include various media that can store program codes, such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本公开提供了一种传输反馈方法及用户设备,其中传输反馈方法包括:将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE;获取目标UE在时频传输资源上发送的反馈信息;根据反馈信息确定单播或组播传输状态。

Description

传输反馈方法及用户设备
相关申请的交叉引用
本申请主张在2018年11月2日在中国提交的中国专利申请号No.201811303670.5的优先权,其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域,尤其涉及一种传输反馈方法及用户设备。
背景技术
车对外界的信息交换(vehicle to everything,V2X)技术借助车与车、车与路测基础设施、车与路人之间的无线通信,可实时感知车辆周边状况和共享道路信息并进行及时预警,已成为当前解决道路安全问题的一个研究热点。
相关技术的长期演进(Long Term Evolution,LTE)V2X技术中(如Rel-14 LTE V2X技术),在用户设备(User Equipment,UE)与UE之间传输数据的PC5接口(也称之为直通链路)已经可以支持基本的基于道路安全的业务传输。
随着车联网技术的进一步发展,一些新应用场景应运而生,例如:车辆编队、高级驾驶、传感器信息共享以及远程控制等应用。这些应用中有些要求的是一个组内的UE之间的通信,或者是两个UE之间的单播通信。
在R14/R15中均没有讨论过针对单播和组播引入反馈,即除了物理直通共享信道(Pysical Sidelink Share Channel,PSSCH)以及物理直通控制信道(Physical Sidelink Control Channel,PSCCH)以外,还需要引入反馈信号,针对反馈信号,是定义专门的反馈资源发送还是通过PSCCH和/或PSSCH发送,目前还在讨论中。对于反馈资源,是由源UE还是目标UE指示也还在讨论中,具体如何指示也还没有确定。
发明内容
本公开的一些实施例提供一种传输反馈方法及用户设备,以解决相关技 术中针对单播和组播传输未引入反馈资源,以及反馈资源如何发送和指示的问题。
本公开的一些实施例提供一种传输反馈方法,包括:
将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE;
获取所述目标UE在所述时频传输资源上发送的反馈信息;
根据所述反馈信息,确定单播或组播传输状态。
可选的,所述时频传输资源至少包括:
物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,所述PSCCH中携带有调度控制信息SCI,所述SCI用于指示所述HARQ-ACK反馈信道的位置信息。
可选的,所述将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE的步骤,包括:
建立与至少一个所述目标UE之间的连接;
自主选择或接收网络侧设备分配的所述时频传输资源,将所述时频传输资源发送至所述目标UE。
可选的,所述建立与至少一个所述目标UE之间的连接的步骤,包括:
在单播通信模式下,所述源UE建立与一个所述目标UE之间的连接;
在建立连接过程中,所述源UE与一个所述目标UE协商或者交互确定源标识以及目标标识。
可选的,所述建立与至少一个所述目标UE之间的连接的步骤,包括:
在组播通信模式下,所述源UE建立与至少两个所述目标UE之间的连接;
在建立连接过程中,所述源UE与至少两个所述目标UE协商或者交互确定一个目标组标识以及所述源UE与所述目标UE各自的标识信息。
可选的,所述自主选择或接收网络侧设备分配的所述时频传输资源,将所述时频传输资源发送至所述目标UE的步骤,包括:
所述源UE在资源池中自主选择一个所述时频传输资源,将自主选择的所述时频传输资源发送至所述目标UE;或者
在所述网络侧设备根据所述源UE的业务时延需求以及所述目标UE的处理能力分配一个所述时频传输资源后,接收所述网络侧设备所发送的所述时频传输资源并发送至所述目标UE。
可选的,所述时频传输资源中携带的调度控制信息SCI包括目标标识指示和偏移值指示;或者
所述SCI中在包括目标标识指示的基础上,还包括源标识指示或会话标识/序列标识指示;或者
若所述源UE与所述目标UE连接过程中同时协商或者交互确定一个偏移值时,则所述SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
可选的,所述获取所述目标UE在所述时频传输资源上发送的反馈信息的步骤,包括:
根据所述SCI获取第一序列;
在所述时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取所述反馈信息。
可选的,所述根据所述SCI获取第一序列的步骤,包括:
在所述SCI中包括源标识指示时,获取所述目标UE根据***映射以及源标识,生成的第一序列;或者
在所述SCI中包括目标标识指示时,获取所述目标UE根据目标标识以及偏移值,生成的第一序列,所述偏移值为所述SCI中指示的偏移值或者所述源UE与所述目标UE连接过程中协商或者交互确定的偏移值;或者
在所述SCI中有会话标识/序列标识时,获取所述目标UE根据***映射以及会话标识/序列标识,生成的第一序列。
可选的,所述获取所述目标UE在所述时频传输资源上发送的反馈信息的步骤,包括:
获取所述目标UE根据目标组标识生成的一个第二序列;
在所述时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取所述反馈信息。
可选的,所述获取所述目标UE在所述时频传输资源上发送的反馈信息 的步骤,包括:
获取至少一个所述目标UE根据目标组标识以及对应的标识信息,所生成的第三序列;
在所述时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,在根据一第三序列检测到否认NACK信息时,停止检测并确定获取所述反馈信息;
其中,各所述目标UE的标识信息对应于不同的偏移。
可选的,所述根据所述反馈信息,确定单播或组播传输状态的步骤,包括:
在接收到所述目标UE发送的确认ACK信息时,确定所述源UE与所述目标UE之间的单播传输成功;
在接收到所述目标UE发送的否认NACK信息时,确定所述源UE与所述目标UE之间的组播传输失败;
其中,在单播通信模式下仅在接收成功时所述目标UE发送所述反馈信息,在组播通信模式下仅在接收失败时所述目标UE发送所述反馈信息。
可选的,在所述源UE与所述目标UE之间的单播或组播传输失败时,还包括:
启动重传过程,向所述目标UE发送重新获取的所述时频传输资源。
本公开的一些实施例还一种传输反馈方法,包括:
接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源;
目标UE在所述时频传输资源上发送反馈信息。
可选的,所述时频传输资源至少包括:
物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,所述PSCCH中携带有调度控制信息SCI,所述SCI用于指示所述HARQ-ACK反馈信道的位置信息。
可选的,所述接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源的步骤,包括:
建立与所述源UE之间的连接;
接收所述源UE所发送的所述时频传输资源。
可选的,所述目标UE在所述时频传输资源上发送反馈信息的步骤,包括:
对所述PSCCH进行盲检,获取所述PSCCH、所述PSSCH以及所述HARQ-ACK反馈信道的位置信息;
在获取所述PSSCH的位置信息后,对所述PSSCH进行解析获取单播或组播传输状态,根据单播或组播传输状态确定反馈信息;
将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE。
可选的,在单播通信模式下,所述SCI包括目标标识指示和偏移值指示;或者
在单播通信模式下,所述SCI中在包括目标标识指示的基础上,还可包括源标识指示或会话标识/序列标识指示,其中源标识以及目标标识在所述目标UE与所述源UE建立连接时协商或者交互确定;
或者
在单播通信模式下,所述目标UE与所述源UE建立连接时协商或者交互确定源标识、目标标识以及偏移值时,则所述SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
可选的,所述根据单播或组播传输状态确定反馈信息的步骤,包括:
在所述目标UE与所述源UE之间的单播传输成功时,所述目标UE根据所述SCI生成携带确认ACK信息的第一序列。
可选的,所述目标UE根据所述SCI生成携带确认ACK信息的第一序列的步骤,包括:
在所述SCI中包括源标识指示时,所述目标UE根据***映射以及源标识生成第一序列;或者
在所述SCI中包括目标标识指示时,所述目标UE根据目标标识以及偏移值生成第一序列;或者
在所述SCI中有会话标识/序列标识指示时,所述目标UE根据***映射以及会话标识/序列标识生成第一序列。
可选的,所述将所述反馈信息通过所述HARQ-ACK反馈信道发送至所 述源UE的步骤,包括:
将携带确认ACK信息的第一序列通过所述HARQ-ACK反馈信道发送至所述源UE;
其中在单播通信模式下仅在接收成功时所述目标UE发送所述反馈信息。
可选的,所述根据单播或组播传输状态确定反馈信息的步骤,包括:
在所述目标UE与所述源UE之间的组播传输失败时,接收失败的所述目标UE根据目标组标识生成携带否认NACK信息的一个第二序列,其中目标组标识在至少两个所述目标UE与所述源UE建立组播连接时协商或者交互确定。
可选的,所述根据单播或组播传输状态确定反馈信息的步骤,包括:
在所述目标UE与所述源UE之间的组播传输失败时,接收失败的所述目标UE根据目标组标识以及对应的标识信息生成携带否认NACK信息的第三序列;
其中目标组标识以及所述源UE和所述目标UE各自的标识信息,在至少两个所述目标UE与所述源UE建立连接时协商或者交互确定,各所述目标UE的标识信息对应于不同的偏移。
可选的,所述将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE的步骤,包括:
将携带否认NACK信息的第二序列通过所述HARQ-ACK反馈信道发送至所述源UE;
其中在组播通信模式下仅在接收失败时所述目标UE发送所述反馈信息。
可选的,所述将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE的步骤,包括:
所述目标UE将生成的携带否认NACK信息的第三序列通过所述HARQ-ACK反馈信道发送至所述源UE;
其中在组播通信模式下仅在接收失败时所述目标UE发送所述反馈信息。
可选的,所述目标UE在所述时频传输资源上发送反馈信息后,若所述源UE与所述目标UE之间的单播或组播传输未成功时,还包括:
确定启动重传过程,接收所述源UE发送的重新获取的所述时频传输资 源。
本公开的一些实施例提供一种源用户设备,包括:收发机、存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,所述收发机执行所述计算机程序时实现以下步骤:
将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE;
所述处理器用于:获取所述目标UE在所述时频传输资源上发送的反馈信息;
根据所述反馈信息,确定单播或组播传输状态。
可选的,所述时频传输资源至少包括:
物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,所述PSCCH中携带有调度控制信息SCI,所述SCI用于指示所述HARQ-ACK反馈信道的位置信息。
可选的,所述收发机将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE时,还用于:
建立与至少一个所述目标UE之间的连接;
自主选择或接收网络侧设备分配的所述时频传输资源,将所述时频传输资源发送至所述目标UE。
可选的,所述收发机在建立与至少一个所述目标UE之间的连接时,还用于:
在单播通信模式下,建立与一个所述目标UE之间的连接;
在建立连接过程中,与一个所述目标UE协商或者交互确定源标识以及目标标识。
可选的,所述收发机在建立与至少一个所述目标UE之间的连接时,还用于:
在组播通信模式下,建立与至少两个所述目标UE之间的连接;
在建立连接过程中,与至少两个所述目标UE协商或者交互确定一个目标组标识以及所述源UE与所述目标UE各自的标识信息。
可选的,所述收发机在自主选择或接收网络侧设备分配的所述时频传输 资源,将所述时频传输资源发送至所述目标UE时,还用于:
在资源池中自主选择一个所述时频传输资源,将自主选择的所述时频传输资源发送至所述目标UE;或者
在所述网络侧设备根据所述源UE的业务时延需求以及所述目标UE的处理能力分配一个所述时频传输资源后,接收所述网络侧设备所发送的所述时频传输资源并发送至所述目标UE。
可选的,所述时频传输资源中携带的调度控制信息SCI包括目标标识指示和偏移值指示;或者
所述SCI中在包括目标标识指示的基础上,还包括源标识指示或会话标识/序列标识指示;或者
若所述源UE与所述目标UE连接过程中同时协商或者交互确定一个偏移值时,则所述SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
可选的,所述处理器在获取所述目标UE在所述时频传输资源上发送的反馈信息时,还用于:
根据所述SCI获取第一序列;
在所述时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取所述反馈信息。
可选的,所述处理器在根据所述SCI获取第一序列时,还用于:
在所述SCI中包括源标识指示时,获取所述目标UE根据***映射以及源标识,生成的第一序列;或者
在所述SCI中包括目标标识指示时,获取所述目标UE根据目标标识以及偏移值,生成的第一序列,所述偏移值为所述SCI中指示的偏移值或者所述源UE与所述目标UE连接过程中协商或者交互确定的偏移值;或者
在所述SCI中有会话标识/序列标识指示时,获取所述目标UE根据***映射以及会话标识/序列标识,生成的第一序列。
可选的,所述处理器在获取所述目标UE在所述时频传输资源上发送的反馈信息时,还用于:
获取所述目标UE根据目标组标识生成的一个第二序列;
在所述时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取所述反馈信息。
可选的,所述处理器在获取所述目标UE在所述时频传输资源上发送的反馈信息时,还用于:
获取至少一个所述目标UE根据目标组标识以及对应的标识信息,所生成的第三序列;
在所述时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,在根据一第三序列检测到否认NACK信息时,停止检测并确定获取所述反馈信息;
其中,各所述目标UE的标识信息对应于不同的偏移。
可选的,所述处理器根据所述反馈信息,确定单播或组播传输状态时,还用于:
在接收到所述目标UE发送的确认ACK信息时,确定所述源UE与所述目标UE之间的单播传输成功;
在接收到所述目标UE发送的否认NACK信息时,确定所述源UE与所述目标UE之间的组播传输失败;
其中,在单播通信模式下仅在接收成功时所述目标UE发送所述反馈信息,在组播通信模式下仅在接收失败时所述目标UE发送所述反馈信息。
可选的,在所述源UE与所述目标UE之间的单播或组播传输失败时,所述收发机还用于:
启动重传过程,向所述目标UE发送重新获取的所述时频传输资源。
本公开的一些实施例提供一种目标用户设备,包括:收发机、存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,所述收发机执行所述计算机程序时实现以下步骤:
接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源;
在所述时频传输资源上发送反馈信息。
可选的,所述时频传输资源至少包括:
物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重 传请求确认HARQ-ACK反馈信道,所述PSCCH中携带有调度控制信息SCI,所述SCI用于指示所述HARQ-ACK反馈信道的位置信息。
可选的,所述收发机接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源时,还用于:
建立与所述源UE之间的连接;
接收所述源UE所发送的所述时频传输资源。
可选的,所述收发机在所述时频传输资源上发送反馈信息时,还用于:
对所述PSCCH进行盲检,获取所述PSCCH、所述PSSCH以及所述HARQ-ACK反馈信道的位置信息;
在获取所述PSSCH的位置信息后,对所述PSSCH进行解析获取单播或组播传输状态,根据单播或组播传输状态确定反馈信息;
将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE。
可选的,在单播通信模式下,所述SCI包括目标标识指示和偏移值指示;或者
在单播通信模式下,所述SCI中在包括目标标识指示的基础上,还可包括源标识指示或会话标识/序列标识指示,其中源标识以及目标标识在所述目标UE与所述源UE建立连接时协商或者交互确定;或者
在单播通信模式下,所述目标UE与所述源UE建立连接时协商或者交互确定源标识、目标标识以及偏移值时,则所述SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
可选的,所述收发机根据单播或组播传输状态确定反馈信息时,还用于:
在所述目标UE与所述源UE之间的单播传输成功时,根据所述SCI生成携带确认ACK信息的第一序列。
可选的,所述收发机根据所述SCI生成携带确认ACK信息的第一序列时,还用于:
在所述SCI中包括源标识指示时,根据***映射以及源标识生成第一序列;或者
在所述SCI中包括目标标识指示时,根据目标标识以及偏移值生成第一序列;或者
在所述SCI中有会话标识/序列标识指示时,根据***映射以及会话标识/序列标识生成第一序列。
可选的,所述收发机将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE时,还用于:
将携带确认ACK信息的第一序列通过所述HARQ-ACK反馈信道发送至所述源UE;
其中在单播通信模式下仅在接收成功时所述目标UE发送所述反馈信息。
可选的,所述收发机根据单播或组播传输状态确定反馈信息时,还用于:
在与所述源UE之间的组播传输失败时,根据目标组标识生成携带否认NACK信息的一个第二序列,其中目标组标识在至少两个所述目标UE与所述源UE建立组播连接时协商或者交互确定。
可选的,所述收发机根据单播或组播传输状态确定反馈信息时,还用于:
与所述源UE之间的组播传输失败时,根据目标组标识以及对应的标识信息生成携带否认NACK信息的第三序列;
其中目标组标识以及所述源UE和所述目标UE各自的标识信息,在至少两个所述目标UE与所述源UE建立连接时协商或者交互确定,各所述目标UE的标识信息对应于不同的偏移。
可选的,所述收发机将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE时,还用于:
将携带否认NACK信息的第二序列通过所述HARQ-ACK反馈信道发送至所述源UE;
其中在组播通信模式下仅在接收失败时所述目标UE发送所述反馈信息。
可选的,将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE时,收发机还用于:
将生成的携带否认NACK信息的第三序列通过所述HARQ-ACK反馈信道发送至所述源UE;
其中在组播通信模式下仅在接收失败时所述目标UE发送所述反馈信息。
可选的,所述收发机在所述时频传输资源上发送反馈信息后,若所述源UE与所述目标UE之间的单播或组播传输未成功时,还用于:
确定启动重传过程,接收所述源UE发送的重新获取的所述时频传输资源。
本公开的一些实施例提供一种计算机可读存储介质,其上存储有计算机程序,该计算机程序被处理器执行时实现源用户设备侧或者目标用户设备侧所述的传输反馈方法中的步骤。
本公开的一些实施例还提供一种源用户设备,包括:
第一发送模块,用于将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE;
获取模块,用于获取所述目标UE在所述时频传输资源上发送的反馈信息;
确定模块,用于根据所述反馈信息,确定单播或组播传输状态。
本公开的一些实施例还提供一种目标用户设备,包括:
接收模块,用于接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源;
第二发送模块,用于在所述时频传输资源上发送反馈信息。
本公开技术方案,通过将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源UE建立连接的至少一个目标UE;获取目标UE在时频传输资源上发送的反馈信息;根据所获取到的反馈信息,确定源UE与目标UE之间的单播或组播传输状态,可以实现通过引入反馈资源使得源UE获取传输状态信息,进而便于源UE与目标UE之间的重传确定,保证源UE与目标UE之间的通信,解决相关技术中针对单播和组播传输未引入反馈资源的问题。
附图说明
下面将结合本公开的一些实施例中的附图,对本公开的一些实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本公开一部分实施例,而不是全部的实施例。基于本公开中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本公开保护的范围。
图1表示本公开的一些实施例源用户设备侧传输反馈方法示意图;
图2表示本公开的一些实施例目标用户设备侧传输反馈方法示意图;
图3表示本公开的一些实施例提供的源用户设备的一种结构示意图;
图4表示本公开的一些实施例提供的源用户设备的另一种结构示意图;
图5为本公开的一些实施例提供的目标用户设备的一种结构示意图;
图6为本公开的一些实施例提供的目标用户设备的另一种结构示意图。
具体实施方式
下面将结合本公开的一些实施例中的附图,对本公开的一些实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本公开一部分实施例,而不是全部的实施例。基于本公开中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本公开保护的范围。
本公开的一些实施例提供一种传输反馈方法,如图1所示,包括:
步骤101、将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE。
本公开的一些实施例提供的传输反馈方法应用于源UE,其中源UE首先获取用于反馈单播或组播传输的反馈信息的时频传输资源,将获取的时频传输资源发送至与源UE建立连接的至少一个目标UE。针对与单播传输而言,源UE将获取的时频传输资源发送至一个目标UE,针对于组播传输而言,源UE与大于或者等于两个的目标UE形成组播组,在发送时频传输资源时,需要向组内的所有目标UE发送时频传输资源。其中针对资源池中的一时频传输资源,可以同时被单播传输和组播传输选中,但是针对于一具体的传输过程而言,该时频传输资源仅可用于单播传输或者仅可用于组播传输。
步骤102、获取目标UE在时频传输资源上发送的反馈信息。
在源UE向至少一个目标UE发送时频传输资源之后,目标UE可以依据所接收到的时频传输资源确定单播或组播传输状态,然后向源UE在时频传输资源上发送反馈信息,至此源UE可以在单播传输时,获取一目标UE所发送的反馈信息,在组播传输时,获取组内至少一个目标UE所发送的反馈信 息。
步骤103、根据反馈信息,确定单播或组播传输状态。
在源UE接收到目标UE所发送的反馈信息之后,可以获取反馈信息中所携带的单播或组播传输状态,即源UE可以根据所接收到的反馈信息确定源UE与目标UE之间的单播或者组播传输状态。其中在单播通信模式下,在源UE与目标UE之间的传输成功时,目标UE可以发送反馈信息,在组播通信模式下,在源UE与组内目标UE之间的传输失败时,目标UE可以发送反馈信息。
其中针对传输失败的情况,源UE可以向目标UE重新发送时频传输资源实现源UE与目标UE之间的重传,在传输成功的情况下,源UE可以在下一个传输块到来时执行下次传输过程。
本公开的一些实施例的传输反馈方法,可以实现通过引入反馈资源使得源UE获取传输状态信息,进而便于源UE与目标UE之间的重传确定,保证源UE与目标UE之间的通信。
在本公开的一些实施例中,时频传输资源至少包括:物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,PSCCH中携带有调度控制信息SCI,SCI用于指示HARQ-ACK反馈信道的位置信息。
源UE向目标UE所发送的时频传输资源中除PSSCH以及PSCCH之外,还包括有混合自动重传请求(Hybrid Automatic Repeat Request,HARQ)-确认(Acknowledgement,ACK)反馈信道,其中时频传输资源中的PSCCH中携带有调度控制信息(Sidelink Control Information,SCI),PSCCH中所携带的SCI可以指示HARQ-ACK反馈信道的位置信息,进而可以便于后续过程中目标UE通过HARQ-ACK反馈信道发送反馈信息。
在本公开的一些实施例中,将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE的步骤,包括:建立与至少一个目标UE之间的连接;自主选择或接收网络侧设备分配的时频传输资源,将时频传输资源发送至目标UE。
在源UE向至少一个目标UE发送时频传输资源时,首先需要源UE建立 与至少一个目标UE之间的连接,在单播通信模式下,源UE建立与一个目标UE之间的连接,在组播通信模式下,源UE建立与组内至少两个目标UE之间的连接。在建立连接之后,源UE可以通过两种方式获取时频传输资源。第一种方式为源UE直接在资源池中自主选择时频传输资源,第二种方式为源UE接收网络侧设备所分配的时频传输资源,在源UE通过上述两种方式中的任一种获取时频传输资源之后,可以将时频传输资源发送至至少一个目标UE。通过任意一种方式获取时频传输资源,可以保证源UE获取资源的灵活性。
下面对单播以及组播通信模式下,源UE与目标UE之间建立连接的过程进行阐述。
建立与至少一个目标UE之间的连接的步骤,包括:在单播通信模式下,源UE建立与一个目标UE之间的连接;在建立连接过程中,源UE与一个目标UE协商或者交互确定源标识以及目标标识。
针对于单播通信模式而言,源UE需要与一个目标UE之间建立连接,在建立连接的过程中,源UE可以与目标UE通过协商或者交互的方式确定源标识以及目标标识。这里的源标识与源UE对应,目标标识与目标UE对应。
建立与至少一个目标UE之间的连接的步骤,包括:在组播通信模式下,源UE建立与至少两个目标UE之间的连接;在建立连接过程中,源UE与至少两个目标UE协商或者交互确定一个目标组标识以及源UE与目标UE各自的标识信息。
针对于组播通信模式而言,源UE需要与组播组内至少两个目标UE之间建立连接,在源UE与至少两个目标UE之间建立连接的过程中,源UE可以与至少两个目标UE通过协商或者交互的方式确定一个目标组标识,同时还可以通过协商或者交互的方式确定源UE所对应的标识信息以及目标UE对应的标识信息。这里的目标组标识表示源UE与至少两个目标UE所形成的组播组所对应的标识。
通过协商或者交互的方式确定单播通信模式下对应的源标识以及目标标识,通过协商或者交互的方式确定组播通信模式下对应的目标组标识以及源UE与目标UE的标识信息,可以提供多样化的确定方式,保证确定过程的灵活性。
下面对单播以及组播通信模式下,源UE获取时频传输资源并发送至目标UE的过程进行详细阐述。
在本公开的一些实施例中,自主选择或接收网络侧设备分配的时频传输资源,将时频传输资源发送至目标UE的步骤,包括:
源UE在资源池中自主选择一个时频传输资源,将自主选择的时频传输资源发送至目标UE;或者在网络侧设备根据源UE的业务时延需求以及目标UE的处理能力分配一个时频传输资源后,接收网络侧设备所发送的时频传输资源并发送至目标UE。
如果是模式2方式的话,需要由源UE在资源池中自主选择一个时频传输资源,然后源UE将自主选择的时频传输资源发送至目标UE。
如果是模式1方式的话,需要网络侧设备来分配这个时频传输资源。针对单播而言,网络侧设备在分配时频传输资源时,需要获取以下信息:接收源UE所上报的短缓存状态报告(Buffer Status Report,BSR),其中BSR中包含service ID(服务标识)信息,网络侧设备可以根据service ID与传输方式的映射关系来确定是申请单播资源还是组播资源,其中源UE也可以在BSR中直接指示是单播,或者直接指示组内成员个数为2。网络侧设备也可以接收源UE所上报的UE assist info(协助信息),UE assist info中可增加对应指示,可以直接指示是单播,或者直接指示组内成员个数为2。至此网络侧设备可以确定当前是单播通信模式。
网络侧设备还需要获取源UE的业务时延需求以及目标UE的处理能力。源UE的业务时延需求在相关技术中的过程中可以知道,具体而言,网络侧设备可以通过数据包优先级(ProSe Per-Packet Priority,PPPP)、逻辑信道组(Logical Channel Group,LCG)或者增强的服务质量(Quality of Service,QOS)指示获取源UE的业务时延需求。对于目标UE的处理能力这里可以不做强制要求,如果无法获知目标UE的处理能力,则可以将***默认的最低处理能力确定为目标UE的处理能力。
对于单播通信模式而言,网络侧设备可以获取目标UE的处理能力以及目标UE的地理位置等信息,只是不知道建立连接的目标UE的信息。此时源UE可以上报相关信息至网络侧设备,使得网络侧设备在做PSSCH资源 分配以及反馈资源分配的时候可以有一定的增益。比如通过BSR或者UE assist info做资源请求的时候,可以包含目标ID,这里的目标ID是24bit的L2 ID。网络侧设备做一定的关联处理,可以得到相关的信息。
网络侧设备在获取源UE的业务时延需求以及目标UE的处理能力之后,可以确定一个时频传输资源,并发送至源UE,至此源UE可以接收网络侧设备所发送的时频传输资源并发送至目标UE。
需要说明的是,网络侧设备分配的时频传输资源,源UE按照直通链路(sidelink,SL)上的对应方式做指示即可,不需要做进一步的转化。
如果是模式1方式的话,需要网络侧设备来分配这个时频传输资源。针对组播而言,可以由网络侧设备来分配这个时频传输资源。对于网络侧设备而言,需要知道以下信息或者部分信息:接收源UE所上报的短缓存状态报告(Buffer Status Report,BSR),其中BSR中包含service ID(服务标识)信息,网络侧设备可以根据service ID与传输方式的映射关系来确定是申请单播资源还是组播资源,但并不能得到组内成员个数,因此在码字区分的方式下,无法确定时频传输资源中反馈资源的大小。此时源UE可以在BSR中直接指示组内成员个数。网络侧设备也可以接收源UE所上报的UE assist info(协助信息),UE assist info中可增加对应指示,可以直接指示组内成员个数。至此网络侧设备可以确定当前是组播通信模式。
网络侧设备还需要获取源UE的业务时延需求以及组内各目标UE的处理能力。源UE的业务时延需求在相关技术中的过程可以知道,具体而言,可以通过PPPP、LCG或者增强的QOS指示获取源UE的业务时延需求。对于各目标UE的处理能力这里可以不做强制要求,如果无法获知目标UE的处理能力,可以将***默认的最低处理能力确定为目标UE的处理能力。
在网络侧设备分配一个时频传输资源后,源UE可以接收网络侧设备发送的时频传输资源并发送至目标UE,此时组播组内的目标UE复用一个时频传输资源。
在本公开的一些实施例中,针对于单播通信模式而言,时频传输资源中携带的调度控制信息SCI包括目标标识指示和偏移值指示,或者SCI中在包括目标标识指示的基础上,还包括源标识指示或会话标识/序列标识指示;或 者若源UE与目标UE连接过程中同时协商或者交互确定一个偏移值时,则SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
在单播模式下源UE与目标UE之间建立连接时,源UE与目标UE之间可以通过协商或者交互的方式确定源标识以及目标标识。时频传输资源所携带的SCI中可以包括目标标识指示和偏移值指示,或者SCI中在包括目标标识指示的基础上,还包括源标识指示或会话标识/序列标识指示。
若是在源UE与目标UE之间建立连接时,在协商或者交互确定源标识以及目标标识的同时,协商或者交互确定一个偏移值,则此时的SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
需要说明的是,目标标识指示是相关技术中的,可以在此基础上增加偏移值指示,还可以增加源标识指示或会话标识/序列标识指示,若通过协商或者交互的方式确定了一个偏移值,可选的仅包括目标标识指示即可,还可以包括源标识指示或者会话标识/序列标识指示。
其中,针对于单播通信模式而言,获取目标UE在时频传输资源上发送的反馈信息的步骤,包括:根据SCI获取第一序列;在时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取反馈信息。
由于SCI中包括标识指示,源UE可以根据SCI中所包含的信息情况来获取第一序列,在SCI获取第一序列之后,可以在时频传输资源的HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取反馈信息。其中针对于单播而言,只有在单播传输成功时可以检测到反馈信息。
其中,根据SCI获取第一序列的步骤包括:
在SCI中包括源标识指示时,获取目标UE根据***映射以及源标识,生成的第一序列;或者
在SCI中包括目标标识指示时,获取目标UE根据目标标识以及偏移值,生成的第一序列,偏移值为SCI中指示的偏移值或者源UE与目标UE连接过程中协商或者交互确定的偏移值;或者
在SCI中有会话标识/序列标识指示时,获取目标UE根据***映射以及 会话标识/序列标识,生成的第一序列。
根据SCI中所包含的信息情况,可以采用不同的方式来获取第一序列,在SCI中在包括目标标识指示的基础上,还包括源标识指示时,源UE可以获取目标UE根据***映射以及源标识所生成的第一序列。需要说明的是,这里的第一序列可以m序列,但不仅仅局限于m序列,其中NR(New RAT,新无线接入技术)中的同步信号以及解调参考信号(Demodulation Reference Signal,DMRS)均为m序列。
在SCI中在包括目标标识指示的基础上,还有会话标识/序列标识指示时,源UE可以获取目标UE根据***映射以及会话标识/序列标识,所生成的第一序列。
在SCI中不包括源标识指示或者会话标识/序列标识指示时,必然包括目标标识指示,此时源UE可以获取目标UE根据目标标识以及偏移值,所生成的第一序列。若源UE与目标UE之间连接时协商或者交互确定了一个偏移值,这里所使用的偏移值可以为协商或者交互确定的偏移值。在源UE与目标UE之间连接时没有确定偏移值时,这里所使用的偏移值可以为SCI中指示的偏移值。
在本公开的一些实施例中,针对组播通信而言,获取目标UE在时频传输资源上发送的反馈信息的步骤,包括:获取目标UE根据目标组标识生成的一个第二序列;在时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取反馈信息。
针对于组播传输而言,若组播组内的目标UE接收失败时,接收失败的目标UE可以根据预先协商或者交互确定的目标组标识生成一个第二序列,由于各目标UE复用在同一时频传输资源上,因此接收失败的不同UE根据目标组标识所生成的第二序列相同,源UE可以获取一个第二序列,并在时频传输资源的HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取反馈信息。在源UE获取到反馈信息时,即可确定组播传输失败。
针对组播通信而言,获取目标UE在时频传输资源上发送的反馈信息的步骤,还包括:获取至少一个目标UE根据目标组标识以及对应的标识信息,所生成的第三序列;在时频传输资源的混合自动重传请求确认HARQ-ACK反 馈信道上利用序列相关性进行滑动相关检测峰值,在根据一第三序列检测到否认NACK信息时,停止检测并确定获取反馈信息;其中,各目标UE的标识信息对应于不同的偏移。
需要说明的是,针对于组播而言,在建立连接时协商或者交互确定了一个目标组标识以及源UE与目标UE各自的标识信息,针对于每个目标UE而言可以采用不同的序列或者偏移,这里的序列或者偏移与目标UE自身的标识信息对应。
接收失败的目标UE可以根据预先协商或者交互确定的目标组标识以及自身的标识信息生成一个第三序列,由于各目标UE所对应的标识信息不同,且各目标UE的标识信息对应于不同的偏移,因此接收失败的不同目标UE根据目标组标识以及对应的标识信息,所生成的第三序列不同。接收失败的目标UE可以将生成的第三序列发送至源UE。其中源UE可以在时频传输资源的HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,在根据一第三序列检测到否认NACK信息时,停止检测并确定获取组播传输失败的反馈信息。即在检测到NACK信息时就可以停止检测过程。
在本公开的一些实施例中,确定单播或组播传输状态的步骤包括:
在接收到目标UE发送的确认ACK信息时,确定源UE与目标UE之间的单播传输成功;在接收到目标UE发送的否认NACK信息时,确定源UE与目标UE之间的组播传输失败;其中,在单播通信模式下仅在接收成功时目标UE发送反馈信息,在组播通信模式下仅在接收失败时目标UE发送反馈信息。
在源UE确定单播的传输状态时,若接收到的反馈信息中包括确认ACK信息,则表明源UE与目标UE之间的单播传输成功,若接收到的反馈信息中包括否认NACK信息,则表明源UE与目标UE之间的组播传输失败。
即在单播通信模式下仅在传输成功时目标UE可以发送反馈信息,在组播通信模式下仅在传输失败时目标UE发送反馈信息。
下面对此进行简要介绍,从可靠性的角度来说,基于ACK的可靠性要求会高一些。对于NACK来说,缺点在于可能存在漏报。比如PSCCH接收失败的情况下,没有办法做相对应的反馈,同样,如果是ACK接收的话,也是 不做反馈。即对于源UE来说,没有办法区分这两种情况。因此规定仅在组播接收失败时反馈NACK,在单播接收成功时反馈ACK,其他情况不做反馈。
在本公开的一些实施例中,在源UE与目标UE之间的单播或组播传输失败时,还包括:启动重传过程,向目标UE发送重新获取的时频传输资源。在单播或者组播传输失败时,需要源UE启动重传流程,可以通过自主选择或者接收网络测设备分配的方式重新获取时频传输资源发送至目标UE。
本公开的一些实施例提供的传输反馈方法,通过将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源UE建立连接的至少一个目标UE;获取目标UE在时频传输资源上发送的反馈信息;根据所获取到的反馈信息,确定源UE与目标UE之间的单播或组播传输状态,可以实现通过引入反馈资源使得源UE获取传输状态信息,进而便于源UE与目标UE之间的重传确定,保证源UE与目标UE之间的通信。
本公开的一些实施例提供一种传输反馈方法,如图2所示,包括:
步骤201、接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源。
本公开的一些实施例提供的传输反馈方法应用于目标UE,其中目标UE首先与源UE之间建立连接,针对于单播传输而言,一个目标UE与源UE之间建立连接即可,针对组播而言,需要组播组内的至少两个目标UE均与源UE之间建立连接。在目标UE与源UE之间建立连接之后,单播状态下的一个目标UE可以接收源UE所发送的时频传输资源,组播状态下组内的各目标UE均需要接收源UE所发送的时频传输资源。
步骤202、目标UE在时频传输资源上发送反馈信息。
在获取源UE所发送的时频传输资源之后,可以依据所接收到的时频传输资源确定单播或组播传输状态,然后向源UE在时频传输资源上发送反馈信息。
本公开的一些实施例的传输反馈方法,可以实现通过引入反馈资源向源UE发送传输状态信息,进而便于源UE与目标UE之间的重传确定,保证源UE与目标UE之间的通信。
在本公开的一些实施例中,时频传输资源至少包括:物理直通共享信道 PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,PSCCH中携带有调度控制信息SCI,SCI用于指示HARQ-ACK反馈信道的位置信息。
目标UE所接收到的时频传输资源除PSSCH以及PSCCH之外,还包括有HARQ-ACK反馈信道,其中时频传输资源中的PSCCH中携带有SCI,PSCCH中所携带的SCI可以指示HARQ-ACK反馈信道的位置信息,进而可以便于后续过程中目标UE通过HARQ-ACK反馈信道向源UE发送反馈信息。
在本公开的一些实施例中,接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源的步骤,包括:建立与源UE之间的连接;接收源UE所发送的时频传输资源。
在接收源UE发送的时频传输资源时,首先需要与源UE建立连接,在单播通信模式下,一个目标UE与源UE之间建立连接即可,在组播通信模式下,需要组内的目标UE均与源UE建立连接。在建立连接之后,源UE可以通过两种方式获取时频传输资源。第一种方式为源UE直接在资源池中自主选择时频传输资源,第二种方式为源UE接收网络侧设备所分配的时频传输资源,在源UE通过上述两种方式中的任一种获取时频传输资源之后,目标UE可以接收源UE通过自主选择或者接收网络侧设备所分配的时频传输资源。
在本公开的一些实施例中,目标UE在时频传输资源上发送反馈信息的步骤,包括:对PSCCH进行盲检,获取PSCCH、PSSCH以及HARQ-ACK反馈信道的位置信息;在获取PSSCH的位置信息后,对PSSCH进行解析获取单播或组播传输状态,根据单播或组播传输状态确定反馈信息;将反馈信息通过HARQ-ACK反馈信道发送至源UE。
目标UE在发送反馈信息时,需要根据所接收到的时频传输资源进行处理,具体为对时频传输资源中的PSCCH进行盲检,在经过盲检之后获得PSCCH、PSSCH以及HARQ-ACK反馈信道的位置信息,在获取PSSCH的位置信息之后,可以进一步对PSSCH进行解析,根据解析结果即可获取单播或组播传输状态,然后根据所获取单播或组播传输状态确定反馈信息,最后 将确定的反馈信息通过HARQ-ACK反馈信道发送至源UE。
下面分别针对于单播和组播,对根据单播或组播传输状态确定反馈信息,将反馈信息通过HARQ-ACK反馈信道发送至源UE的过程进行简要阐述。
针对于单播而言
在单播通信模式下,SCI包括目标标识指示和偏移值指示;或者
在单播通信模式下,SCI中在包括目标标识指示的基础上,还可包括源标识指示或会话标识/序列标识指示,其中源标识以及目标标识在目标UE与源UE建立连接时协商或者交互确定;或者
在单播通信模式下,目标UE与源UE建立连接时协商或者交互确定源标识、目标标识以及偏移值时,则SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
在单播模式下源UE与目标UE之间建立连接时,源UE与目标UE之间可以通过协商或者交互的方式确定源标识以及目标标识。SCI中可以包括目标标识指示和偏移值指示,或者SCI中在包括目标标识指示的基础上,还可以包括源标识指示或会话标识/序列标识指示。
若是在源UE与目标UE之间建立连接时,在协商或者交互确定源标识以及目标标识的同时,协商或者交互确定一个偏移值,则此时的SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
需要说明的是,目标标识指示是相关技术中的,可以在此基础上增加偏移值指示,还可以增加源标识指示或会话标识/序列标识指示,若通过协商或者交互的方式确定了一个偏移值,可选的仅包括目标标识指示即可,还可以包括源标识指示或者会话标识/序列标识指示。
在单播通信模式下,根据单播或组播传输状态确定反馈信息的步骤,包括:
在目标UE与源UE之间的单播传输成功时,目标UE根据SCI生成携带确认ACK信息的第一序列。
在源UE与目标UE之间的单播传输成功时,目标UE可以根据SCI生成反馈信息,此时的反馈信息为携带确认ACK信息的第一序列,通过所生成的第一序列可以实现单播传输状态的确定。
其中目标UE根据SCI生成携带确认ACK信息的第一序列的步骤,包括:
在SCI中包括源标识指示时,目标UE根据***映射以及源标识生成第一序列;或者
在SCI中包括目标标识指示时,目标UE根据目标标识以及偏移值生成第一序列;或者
在SCI中有会话标识/序列标识指示时,目标UE根据***映射以及会话标识/序列标识生成第一序列。
根据SCI中所包含的信息情况,可以采用不同的方式来生成第一序列,在SCI中在包括目标标识指示的基础上,还包括源标识指示时,目标UE可以根据***映射以及源标识生成第一序列。需要说明的是,这里的第一序列可以m序列,但不仅仅局限于m序列,其中NR(New RAT,新无线接入技术)中的同步信号以及解调参考信号(Demodulation Reference Signal,DMRS)均为m序列。
在SCI中在包括目标标识指示的基础上,还有会话标识/序列标识指示时,目标UE可以根据***映射以及会话标识/序列标识所生成第一序列。
在SCI中不包括源标识指示或者会话标识/序列标识指示时,必然包括目标标识指示,目标UE可以根据目标标识以及偏移值生成第一序列。若源UE与目标UE之间连接时协商或者交互确定了一个偏移值,这里所使用的偏移值可以为协商或者交互确定的偏移值。在源UE与目标UE之间连接时没有确定偏移值时,这里所使用的偏移值可以为SCI中指示的偏移值。
其中,针对单播而言,将反馈信息通过HARQ-ACK反馈信道发送至源UE的步骤,包括:将携带确认ACK信息的第一序列通过HARQ-ACK反馈信道发送至源UE;其中在单播通信模式下仅在接收成功时目标UE发送反馈信息。
在目标UE生成携带确认ACK信息的第一序列之后,可以将第一序列通过HARQ-ACK反馈信道发送至源UE,进而可以使得源UE在时频传输资源的HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取单播传输成功的反馈信息。
针对于组播而言
根据单播或组播传输状态确定反馈信息的步骤,包括:在目标UE与源UE之间的组播传输失败时,接收失败的目标UE根据目标组标识生成携带否认NACK信息的一个第二序列,其中目标组标识在至少两个目标UE与源UE建立组播连接时协商或者交互确定。
在组内的目标UE与源UE之间的传输失败时,接收失败的目标UE可以根据连接建立时确定的目标组标识生成一个第二序列,由于各目标UE复用在同一时频传输资源上,因此接收失败的UE根据目标组标识所生成的第二序列相同,且所生成的第二序列携带否认NACK信息,源UE可以根据第二序列确定组播传输失败。
其中,将反馈信息通过HARQ-ACK反馈信道发送至源UE的步骤,包括:将携带否认NACK信息的第二序列通过HARQ-ACK反馈信道发送至源UE;其中在组播通信模式下仅在接收失败时目标UE发送反馈信息。
针对根据目标组标识生成一个第二序列的方式而言,在发送反馈信息时可以将携带否认NACK信息的第二序列通过HARQ-ACK反馈信道发送至源UE,源UE可以在时频传输资源的HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取组播传输失败的反馈信息。
其中,根据单播或组播传输状态确定反馈信息的步骤,还包括:在目标UE与源UE之间的组播传输失败时,接收失败的目标UE根据目标组标识以及对应的标识信息生成携带否认NACK信息的第三序列;其中目标组标识以及源UE和目标UE各自的标识信息,在至少两个目标UE与源UE建立连接时协商或者交互确定,各目标UE的标识信息对应于不同的偏移。
针对于组播而言,在建立连接时源UE与目标UE协商或者交互确定了一个目标组标识以及源UE与目标UE各自的标识信息,针对于每个目标UE而言可以采用不同的序列或者偏移,这里的序列或者偏移与目标UE自身的标识信息对应。
接收失败的目标UE可以根据预先协商或者交互确定的目标组标识以及自身的标识信息生成一个第三序列,由于各目标UE所对应的标识信息不同,且各目标UE的标识信息对应于不同的偏移,因此接收失败的不同目标UE根 据目标组标识以及对应的标识信息,所生成的第三序列不同。接收失败的目标UE可以将生成的第三序列发送至源UE。其中源UE可以在时频传输资源的HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,在根据一第三序列检测到否认NACK信息时,停止检测并确定获取组播传输失败的反馈信息。即在检测到NACK信息时就可以停止检测过程。
其中,将反馈信息通过HARQ-ACK反馈信道发送至源UE的步骤,包括:目标UE将生成的携带否认NACK信息的第三序列通过HARQ-ACK反馈信道发送至源UE;其中在组播通信模式下仅在接收失败时目标UE发送反馈信息。
针对根据目标组标识和对应的标识信息生成第三序列的方式而言,在发送反馈信息时可以是目标UE将生成的携带否认NACK信息的第三序列通过HARQ-ACK反馈信道发送至源UE,这里的目标UE为接收失败的目标UE,接收失败的目标UE的数量至少为一个。源UE可以在时频传输资源的HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,在根据一第三序列检测到否认NACK信息时,停止检测并确定获取组播传输失败的反馈信息。即在检测到NACK信息时就可以停止检测过程。
本公开中针对与组播而言是在传输失败时发送携带否认NACK信息的反馈信息,源UE可以根据反馈信息确认组播传输失败。
在本公开的一些实施例中,目标UE在时频传输资源上发送反馈信息后,若源UE与目标UE之间的单播或组播传输未成功时,还包括:确定启动重传过程,接收源UE发送的重新获取的时频传输资源。
在单播或者组播传输失败时,需要源UE启动重传流程,源UE可以通过自主选择或者接收网络测设备分配的方式重新获取时频传输资源并发送,此时的目标UE可以接收源UE重新获取的时频传输资源。
本公开的一些实施例提供的传输反馈方法,通过接收源UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源,并在时频传输资源上发送反馈信息,可以向源UE反馈单播或组播传输状态,实现通过引入反馈资源使得源UE获取传输状态信息,进而便于源UE与目标UE之间的重传确定,保证源UE与目标UE之间的通信。
应理解,说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本公开的至少一个实施例中。因此,在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外,这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。
在本公开的各种实施例中,应理解,下述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本公开的一些实施例的实施过程构成任何限定。
本公开的一些实施例中,网络侧设备通常是指基站。在本公开的实施例中,所述基站的形式不限,可以是宏基站(Macro Base Station)、微基站(Pico Base Station)、Node B(3G移动基站的称呼)、增强型基站(eNB)、家庭增强型基站(Femto eNB或Home eNode B或Home eNB或HeNB)、中继站、接入点、RRU(Remote Radio Unit,远端射频模块)、RRH(Remote Radio Head,射频拉远头)、5G移动通信***中的网络侧节点,如中央单元(Central Unit,CU)和分布式单元(Distributed Unit,DU)等。所述用户设备可以是移动电话(或手机),或者其他能够发送或接收无线信号的设备,包括用户设备(UE)、个人数字助理(PDA)、无线调制解调器、无线通信装置、手持装置、膝上型计算机、无绳电话、无线本地回路(WLL)站、能够将移动信号转换为WiFi信号的客户终端(Customer Premise Equipment,CPE)或移动智能热点、智能家电、或其他不通过人的操作就能自发与移动通信网络通信的设备等。
基于以上方法,本公开的一些实施例还提供了实施上述方法的设备。
请参照图3,为本公开的一些实施例提供的源用户设备的一种结构示意图,该源用户设备300包括:处理器301、收发机302、存储器303、用户接口304和总线接口,其中:
在本公开的一些实施例中,源用户设备300还包括:存储在存储器303上并可在处理器301上运行的计算机程序。所述收发机302,用于读取存储器303中的程序,执行下列过程:
将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE;
处理器301用于:获取目标UE在时频传输资源上发送的反馈信息;根据反馈信息,确定单播或组播传输状态。
在图3中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器301代表的一个或多个处理器和存储器303代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机302可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口304还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器301负责管理总线架构和通常的处理,存储器303可以存储处理器301在执行操作时所使用的数据。
可选的,时频传输资源至少包括:
物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,PSCCH中携带有调度控制信息SCI,SCI用于指示HARQ-ACK反馈信道的位置信息。
可选的,收发机302将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE时,还用于:
建立与至少一个目标UE之间的连接;
自主选择或接收网络侧设备分配的时频传输资源,将时频传输资源发送至目标UE。
可选的,收发机302在建立与至少一个目标UE之间的连接时,还用于:
在单播通信模式下,建立与一个目标UE之间的连接;
在建立连接过程中,与一个目标UE协商或者交互确定源标识以及目标标识。
可选的,收发机302在建立与至少一个目标UE之间的连接时,还用于:
在组播通信模式下,建立与至少两个目标UE之间的连接;
在建立连接过程中,与至少两个目标UE协商或者交互确定一个目标组标识以及源UE与目标UE各自的标识信息。
可选的,收发机302在自主选择或接收网络侧设备分配的时频传输资源,将时频传输资源发送至目标UE时,还用于:
在资源池中自主选择一个时频传输资源,将自主选择的时频传输资源发送至目标UE;或者
在网络侧设备根据源UE的业务时延需求以及目标UE的处理能力分配一个时频传输资源后,接收网络侧设备所发送的时频传输资源并发送至目标UE。
可选的,时频传输资源中携带的调度控制信息SCI包括目标标识指示和偏移值指示;或者
SCI中在包括目标标识指示的基础上,还包括源标识指示或会话标识/序列标识指示;或者
若源UE与目标UE连接过程中同时协商或者交互确定一个偏移值时,则SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
可选的,处理器301在获取目标UE在时频传输资源上发送的反馈信息时,还用于:
根据SCI获取第一序列;
在时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取反馈信息。
可选的,处理器301在根据SCI获取第一序列时,还用于:
在SCI中包括源标识指示时,获取目标UE根据***映射以及源标识,生成的第一序列;或者
在SCI中包括目标标识指示时,获取目标UE根据目标标识以及偏移值,生成的第一序列,偏移值为SCI中指示的偏移值或者源UE与目标UE连接过程中协商或者交互确定的偏移值;或者
在SCI中有会话标识/序列标识指示时,获取目标UE根据***映射以及会话标识/序列标识,生成的第一序列。
可选的,处理器301在获取目标UE在时频传输资源上发送的反馈信息时,还用于:
获取目标UE根据目标组标识生成的一个第二序列;
在时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取反馈信息。
可选的,处理器301在获取目标UE在时频传输资源上发送的反馈信息时,还用于:
获取至少一个目标UE根据目标组标识以及对应的标识信息,所生成的第三序列;
在时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,在根据一第三序列检测到否认NACK信息时,停止检测并确定获取反馈信息;
其中,各目标UE的标识信息对应于不同的偏移。
可选的,处理器301根据反馈信息,确定单播或组播传输状态时,还用于:
在接收到目标UE发送的确认ACK信息时,确定源UE与目标UE之间的单播传输成功;
在接收到目标UE发送的否认NACK信息时,确定源UE与目标UE之间的组播传输失败;
其中,在单播通信模式下仅在接收成功时目标UE发送反馈信息,在组播通信模式下仅在接收失败时目标UE发送反馈信息。
可选的,在源UE与目标UE之间的单播或组播传输失败时,收发机302还用于:
启动重传过程,向目标UE发送重新获取的时频传输资源。
在本公开的一些实施例中,还提供了一种计算机可读存储介质,其上存储有计算机程序,该程序被收发机执行时实现以下步骤:将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE;被处理器执行时实现以下步骤:获取目标UE在时频传输资源上发送的反馈信息;根据反馈信息,确定单播或组播传输状态。
该程序被收发机以及处理器执行时能实现上述应用于源用户设备侧的传输反馈方法实施例中的所有实现方式,为避免重复,此处不再赘述。
请参照图4,本公开的一些实施例提供了另一种源用户设备400,包括:
第一发送模块401,用于将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE;
获取模块402,用于获取目标UE在时频传输资源上发送的反馈信息;
确定模块403,用于根据反馈信息,确定单播或组播传输状态。
其中,时频传输资源至少包括:
物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,PSCCH中携带有调度控制信息SCI,SCI用于指示HARQ-ACK反馈信道的位置信息。
其中,第一发送模块:
第一建立子模块,用于建立与至少一个目标UE之间的连接;
第一发送子模块,用于自主选择或接收网络侧设备分配的时频传输资源,将时频传输资源发送至目标UE。
其中,第一建立子模块进一步用于:
在单播通信模式下,建立与一个目标UE之间的连接;
在建立连接过程中,与一个目标UE协商或者交互确定源标识以及目标标识。
其中,第一建立子模块进一步用于:
在组播通信模式下,建立与至少两个目标UE之间的连接;
在建立连接过程中,与至少两个目标UE协商或者交互确定一个目标组标识以及源UE与目标UE各自的标识信息。
其中,第一发送子模块进一步用于:
在资源池中自主选择一个时频传输资源,将自主选择的时频传输资源发送至目标UE;或者
在网络侧设备根据源UE的业务时延需求以及目标UE的处理能力分配一个时频传输资源后,接收网络侧设备所发送的时频传输资源并发送至目标UE。
其中,时频传输资源中携带的调度控制信息SCI包括目标标识指示和偏移值指示;或者
SCI中在包括目标标识指示的基础上,还包括源标识指示或会话标识/序列标识指示;或者
若源UE与目标UE连接过程中同时协商或者交互确定一个偏移值时,则SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
其中,获取模块包括:
第一获取子模块,用于根据SCI获取第一序列;
第二获取子模块,用于在时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取反馈信息。
其中,第一获取子模块进一步用于:
在SCI中包括源标识指示时,获取目标UE根据***映射以及源标识,生成的第一序列;或者
在SCI中包括目标标识指示时,获取目标UE根据目标标识以及偏移值,生成的第一序列,偏移值为SCI中指示的偏移值或者源UE与目标UE连接过程中协商或者交互确定的偏移值;或者
在SCI中有会话标识/序列标识指示时,获取目标UE根据***映射以及会话标识/序列标识,生成的第一序列。
其中,获取模块还包括:
第三获取子模块,用于获取目标UE根据目标组标识生成的一个第二序列;
第四获取子模块,用于在时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取反馈信息。
其中,获取模块还包括:
第五获取子模块,用于获取至少一个目标UE根据目标组标识以及对应的标识信息,所生成的第三序列;
第六获取子模块,用于在时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,在根据一第三序列检测到否认NACK信息时,停止检测并确定获取反馈信息;
其中,各目标UE的标识信息对应于不同的偏移。
其中,确定模块进一步用于:
在接收到目标UE发送的确认ACK信息时,确定源UE与目标UE之间的单播传输成功;
在接收到目标UE发送的否认NACK信息时,确定源UE与目标UE之间的组播传输失败;
其中,在单播通信模式下仅在接收成功时目标UE发送反馈信息,在组播通信模式下仅在接收失败时目标UE发送反馈信息。
其中,在源UE与目标UE之间的单播或组播传输失败时,源用户设备还包括:
第一处理模块,用于启动重传过程,向目标UE发送重新获取的时频传输资源。
本公开的一些实施例的源用户设备,通过将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源UE建立连接的至少一个目标UE;获取目标UE在时频传输资源上发送的反馈信息;根据所获取到的反馈信息,确定源UE与目标UE之间的单播或组播传输状态,可以实现通过引入反馈资源使得源UE获取传输状态信息,进而便于源UE与目标UE之间的重传确定,保证源UE与目标UE之间的通信。
请参考图5,本公开的一些实施例提供了目标用户设备500的一结构示意图,包括:处理器501、收发机502、存储器503和总线接口,其中:
在本公开的一些实施例中,目标用户设备500还包括:存储在存储器503上并可在处理器501上运行的计算机程序。所述收发机502,用于读取存储器503中的程序,执行下列过程:接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源;在时频传输资源上发送反馈信息。
在图5中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器501代表的一个或多个处理器和存储器503代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机502可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。
处理器501负责管理总线架构和通常的处理,存储器503可以存储处理器501在执行操作时所使用的数据。
可选的,时频传输资源至少包括:物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,PSCCH中携带有调度控制信息SCI,SCI用于指示HARQ-ACK反馈信道的位置信息。
可选的,收发机502接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源时,还用于:
建立与源UE之间的连接;
接收源UE所发送的时频传输资源。
可选的,收发机502在时频传输资源上发送反馈信息时,还用于:
对PSCCH进行盲检,获取PSCCH、PSSCH以及HARQ-ACK反馈信道的位置信息;
在获取PSSCH的位置信息后,对PSSCH进行解析获取单播或组播传输状态,根据单播或组播传输状态确定反馈信息;
将反馈信息通过HARQ-ACK反馈信道发送至源UE。
可选的,在单播通信模式下,SCI包括目标标识指示和偏移值指示;或者
在单播通信模式下,SCI中在包括目标标识指示的基础上,还可包括源标识指示或会话标识/序列标识指示,其中源标识以及目标标识在目标UE与源UE建立连接时协商或者交互确定;或者
在单播通信模式下,目标UE与源UE建立连接时协商或者交互确定源标识、目标标识以及偏移值时,则SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
可选的,收发机502根据单播或组播传输状态确定反馈信息时,还用于:
在目标UE与源UE之间的单播传输成功时,根据SCI生成携带确认ACK信息的第一序列。
可选的,收发机502根据SCI生成携带确认ACK信息的第一序列时,还用于:
在SCI中包括源标识指示时,根据***映射以及源标识生成第一序列;或者
在SCI中包括目标标识指示时,根据目标标识以及偏移值生成第一序列;或者
在SCI中有会话标识/序列标识指示时,根据***映射以及会话标识/序列标识生成第一序列。
可选的,收发机502将反馈信息通过HARQ-ACK反馈信道发送至源UE时,还用于:
将携带确认ACK信息的第一序列通过HARQ-ACK反馈信道发送至源UE;
其中在单播通信模式下仅在接收成功时目标UE发送反馈信息。
可选的,收发机502根据单播或组播传输状态确定反馈信息时,还用于:
在与源UE之间的组播传输失败时,根据目标组标识生成携带否认NACK信息的一个第二序列,其中目标组标识在至少两个目标UE与源UE建立组播连接时协商或者交互确定。
可选的,收发机502根据单播或组播传输状态确定反馈信息时,还用于:
与源UE之间的组播传输失败时,根据目标组标识以及对应的标识信息生成携带否认NACK信息的第三序列;
其中目标组标识以及源UE和目标UE各自的标识信息,在至少两个目标UE与源UE建立连接时协商或者交互确定,各目标UE的标识信息对应于不同的偏移。
可选的,收发机502将反馈信息通过HARQ-ACK反馈信道发送至源UE时,还用于:
将携带否认NACK信息的第二序列通过HARQ-ACK反馈信道发送至源UE;
其中在组播通信模式下仅在接收失败时目标UE发送反馈信息。
可选的,将反馈信息通过HARQ-ACK反馈信道发送至源UE时,收发机502还用于:
将生成的携带否认NACK信息的第三序列通过HARQ-ACK反馈信道发送至源UE;其中在组播通信模式下仅在接收失败时目标UE发送反馈信息。
可选的,收发机502在时频传输资源上发送反馈信息后,若源UE与目 标UE之间的单播或组播传输未成功时,还用于:
确定启动重传过程,接收源UE发送的重新获取的时频传输资源。
在本公开的一些实施例中,还提供了一种计算机可读存储介质,其上存储有计算机程序,该程序被收发机执行时实现以下步骤:接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源;在时频传输资源上发送反馈信息。
该程序被收发机执行时能实现上述应用于目标用户设备侧的传输反馈方法实施例中的所有实现方式,为避免重复,此处不再赘述。
请参照图6,本公开的一些实施例提供了目标用户设备600的另一种结构,如图6所示,该目标用户设备600包括:
接收模块601,用于接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源;
第二发送模块602,用于在时频传输资源上发送反馈信息。
其中,时频传输资源至少包括:
物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,PSCCH中携带有调度控制信息SCI,SCI用于指示HARQ-ACK反馈信道的位置信息。
其中,接收模块包括:
第二建立子模块,用于建立与源UE之间的连接;
接收子模块,用于接收源UE所发送的时频传输资源。
其中,第二发送模块包括:
第七获取子模块,用于对PSCCH进行盲检,获取PSCCH、PSSCH以及HARQ-ACK反馈信道的位置信息;
确定子模块,用于在获取PSSCH的位置信息后,对PSSCH进行解析获取单播或组播传输状态,根据单播或组播传输状态确定反馈信息;
第二发送子模块,用于将反馈信息通过HARQ-ACK反馈信道发送至源UE。
其中,在单播通信模式下,SCI包括目标标识指示和偏移值指示;或者
在单播通信模式下,SCI中在包括目标标识指示的基础上,还可包括源标 识指示或会话标识/序列标识指示,其中源标识以及目标标识在目标UE与源UE建立连接时协商或者交互确定;或者
在单播通信模式下,目标UE与源UE建立连接时协商或者交互确定源标识、目标标识以及偏移值时,则SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
其中,确定子模块进一步用于:
在目标UE与源UE之间的单播传输成功时,根据SCI生成携带确认ACK信息的第一序列。
其中,确定子模块还用于:
在SCI中包括源标识指示时,根据***映射以及源标识生成第一序列;或者
在SCI中包括目标标识指示时,根据目标标识以及偏移值生成第一序列;或者
在SCI中有会话标识/序列标识指示时,根据***映射以及会话标识/序列标识生成第一序列。
其中,第二发送子模块进一步用于:
将携带确认ACK信息的第一序列通过HARQ-ACK反馈信道发送至源UE;
其中在单播通信模式下仅在接收成功时目标UE发送反馈信息。
其中,确定子模块还用于:
在与源UE之间的组播传输失败时,根据目标组标识生成携带否认NACK信息的一个第二序列,其中目标组标识在至少两个目标UE与源UE建立组播连接时协商或者交互确定。
其中,确定子模块还用于:
与源UE之间的组播传输失败时,根据目标组标识以及对应的标识信息生成携带否认NACK信息的第三序列;
其中目标组标识以及源UE和目标UE各自的标识信息,在至少两个目标UE与源UE建立连接时协商或者交互确定,各目标UE的标识信息对应于不同的偏移。
其中,第二发送子模块还用于:
将携带否认NACK信息的第二序列通过HARQ-ACK反馈信道发送至源UE;
其中在组播通信模式下仅在接收失败时目标UE发送反馈信息。
其中,第二发送子模块还用于:
将生成的携带否认NACK信息的第三序列通过HARQ-ACK反馈信道发送至源UE;
其中在组播通信模式下仅在接收失败时目标UE发送反馈信息。
其中,在第二发送模块在时频传输资源上发送反馈信息后,若源UE与目标UE之间的单播或组播传输未成功时,目标用户设备还包括:
第二处理模块,用于确定启动重传过程,接收源UE发送的重新获取的时频传输资源。
本公开的一些实施例的目标用户设备,通过接收源UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源,并在时频传输资源上发送反馈信息,可以向源UE反馈单播或组播传输状态,实现通过引入反馈资源使得源UE获取传输状态信息,进而便于源UE与目标UE之间的重传确定,保证源UE与目标UE之间的通信。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本公开的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的***、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的实施例中,应该理解到,所揭露的装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个***,或一 些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本公开的一些实施例方案的目的。
另外,在本公开各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者基站等)执行本公开各个实施例方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述的是本公开的可选实施方式,应当指出对于本技术领域的普通人员来说,在不脱离本公开所述的原理前提下还可以作出若干改进和润饰,这些改进和润饰也在本公开的保护范围内。

Claims (55)

  1. 一种传输反馈方法,包括:
    将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE;
    获取所述目标UE在所述时频传输资源上发送的反馈信息;
    根据所述反馈信息,确定单播或组播传输状态。
  2. 根据权利要求1所述的传输反馈方法,其中,所述时频传输资源至少包括:
    物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,所述PSCCH中携带有调度控制信息SCI,所述SCI用于指示所述HARQ-ACK反馈信道的位置信息。
  3. 根据权利要求1所述的传输反馈方法,其中,所述将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE的步骤,包括:
    建立与至少一个所述目标UE之间的连接;
    自主选择或接收网络侧设备分配的所述时频传输资源,将所述时频传输资源发送至所述目标UE。
  4. 根据权利要求3所述的传输反馈方法,其中,所述建立与至少一个所述目标UE之间的连接的步骤,包括:
    在单播通信模式下,所述源UE建立与一个所述目标UE之间的连接;
    在建立连接过程中,所述源UE与一个所述目标UE协商或者交互确定源标识以及目标标识。
  5. 根据权利要求3所述的传输反馈方法,其中,所述建立与至少一个所述目标UE之间的连接的步骤,包括:
    在组播通信模式下,所述源UE建立与至少两个所述目标UE之间的连接;
    在建立连接过程中,所述源UE与至少两个所述目标UE协商或者交互确定一个目标组标识以及所述源UE与所述目标UE各自的标识信息。
  6. 根据权利要求3所述的传输反馈方法,其中,所述自主选择或接收网络侧设备分配的所述时频传输资源,将所述时频传输资源发送至所述目标UE的步骤,包括:
    所述源UE在资源池中自主选择一个所述时频传输资源,将自主选择的所述时频传输资源发送至所述目标UE;或者
    在所述网络侧设备根据所述源UE的业务时延需求以及所述目标UE的处理能力分配一个所述时频传输资源后,接收所述网络侧设备所发送的所述时频传输资源并发送至所述目标UE。
  7. 根据权利要求4所述的传输反馈方法,其中,
    所述时频传输资源中携带的调度控制信息SCI包括目标标识指示和偏移值指示;或者
    所述SCI中在包括目标标识指示的基础上,还包括源标识指示或会话标识/序列标识指示;或者
    若所述源UE与所述目标UE连接过程中同时协商或者交互确定一个偏移值时,则所述SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
  8. 根据权利要求7所述的传输反馈方法,其中,所述获取所述目标UE在所述时频传输资源上发送的反馈信息的步骤,包括:
    根据所述SCI获取第一序列;
    在所述时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取所述反馈信息。
  9. 根据权利要求8所述的传输反馈方法,其中,所述根据所述SCI获取第一序列的步骤,包括:
    在所述SCI中包括源标识指示时,获取所述目标UE根据***映射以及源标识,生成的第一序列;或者
    在所述SCI中包括目标标识指示时,获取所述目标UE根据目标标识以及偏移值,生成的第一序列,所述偏移值为所述SCI中指示的偏移值或者所述源UE与所述目标UE连接过程中协商或者交互确定的偏移值;或者
    在所述SCI中有会话标识/序列标识指示时,获取所述目标UE根据*** 映射以及会话标识/序列标识,生成的第一序列。
  10. 根据权利要求5所述的传输反馈方法,其中,所述获取所述目标UE在所述时频传输资源上发送的反馈信息的步骤,包括:
    获取所述目标UE根据目标组标识生成的一个第二序列;
    在所述时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取所述反馈信息。
  11. 根据权利要求5所述的传输反馈方法,其中,所述获取所述目标UE在所述时频传输资源上发送的反馈信息的步骤,包括:
    获取至少一个所述目标UE根据目标组标识以及对应的标识信息,所生成的第三序列;
    在所述时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,在根据一第三序列检测到否认NACK信息时,停止检测并确定获取所述反馈信息;
    其中,各所述目标UE的标识信息对应于不同的偏移。
  12. 根据权利要求1所述的传输反馈方法,其中,所述根据所述反馈信息,确定单播或组播传输状态的步骤,包括:
    在接收到所述目标UE发送的确认ACK信息时,确定所述源UE与所述目标UE之间的单播传输成功;
    在接收到所述目标UE发送的否认NACK信息时,确定所述源UE与所述目标UE之间的组播传输失败;
    其中,在单播通信模式下仅在接收成功时所述目标UE发送所述反馈信息,在组播通信模式下仅在接收失败时所述目标UE发送所述反馈信息。
  13. 根据权利要求1所述的传输反馈方法,其中,在所述源UE与所述目标UE之间的单播或组播传输失败时,还包括:
    启动重传过程,向所述目标UE发送重新获取的所述时频传输资源。
  14. 一种传输反馈方法,包括:
    接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源;
    目标UE在所述时频传输资源上发送反馈信息。
  15. 根据权利要求14所述的传输反馈方法,其中,所述时频传输资源至少包括:
    物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,所述PSCCH中携带有调度控制信息SCI,所述SCI用于指示所述HARQ-ACK反馈信道的位置信息。
  16. 根据权利要求14所述的传输反馈方法,其中,所述接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源的步骤,包括:
    建立与所述源UE之间的连接;
    接收所述源UE所发送的所述时频传输资源。
  17. 根据权利要求15所述的传输反馈方法,其中,所述目标UE在所述时频传输资源上发送反馈信息的步骤,包括:
    对所述PSCCH进行盲检,获取所述PSCCH、所述PSSCH以及所述HARQ-ACK反馈信道的位置信息;
    在获取所述PSSCH的位置信息后,对所述PSSCH进行解析获取单播或组播传输状态,根据单播或组播传输状态确定反馈信息;
    将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE。
  18. 根据权利要求17所述的传输反馈方法,其中,
    在单播通信模式下,所述SCI包括目标标识指示和偏移值指示;或者
    在单播通信模式下,所述SCI中在包括目标标识指示的基础上,还可包括源标识指示或会话标识/序列标识指示,其中源标识以及目标标识在所述目标UE与所述源UE建立连接时协商或者交互确定;或者
    在单播通信模式下,所述目标UE与所述源UE建立连接时协商或者交互确定源标识、目标标识以及偏移值时,则所述SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
  19. 根据权利要求18所述的传输反馈方法,其中,所述根据单播或组播传输状态确定反馈信息的步骤,包括:
    在所述目标UE与所述源UE之间的单播传输成功时,所述目标UE根据所述SCI生成携带确认ACK信息的第一序列。
  20. 根据权利要求19所述的传输反馈方法,其中,所述目标UE根据所 述SCI生成携带确认ACK信息的第一序列的步骤,包括:
    在所述SCI中包括源标识指示时,所述目标UE根据***映射以及源标识生成第一序列;或者
    在所述SCI中包括目标标识指示时,所述目标UE根据目标标识以及偏移值生成第一序列;或者
    在所述SCI中有会话标识/序列标识指示时,所述目标UE根据***映射以及会话标识/序列标识生成第一序列。
  21. 根据权利要求19所述的传输反馈方法,其中,所述将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE的步骤,包括:
    将携带确认ACK信息的第一序列通过所述HARQ-ACK反馈信道发送至所述源UE;
    其中在单播通信模式下仅在接收成功时所述目标UE发送所述反馈信息。
  22. 根据权利要求17所述的传输反馈方法,其中,所述根据单播或组播传输状态确定反馈信息的步骤,包括:
    在所述目标UE与所述源UE之间的组播传输失败时,接收失败的所述目标UE根据目标组标识生成携带否认NACK信息的一个第二序列,其中目标组标识在至少两个所述目标UE与所述源UE建立组播连接时协商或者交互确定。
  23. 根据权利要求17所述的传输反馈方法,其中,所述根据单播或组播传输状态确定反馈信息的步骤,包括:
    在所述目标UE与所述源UE之间的组播传输失败时,接收失败的所述目标UE根据目标组标识以及对应的标识信息生成携带否认NACK信息的第三序列;
    其中目标组标识以及所述源UE和所述目标UE各自的标识信息,在至少两个所述目标UE与所述源UE建立连接时协商或者交互确定,各所述目标UE的标识信息对应于不同的偏移。
  24. 根据权利要求22所述的传输反馈方法,其中,所述将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE的步骤,包括:
    将携带否认NACK信息的第二序列通过所述HARQ-ACK反馈信道发送 至所述源UE;
    其中在组播通信模式下仅在接收失败时所述目标UE发送所述反馈信息。
  25. 根据权利要求23所述的传输反馈方法,其中,所述将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE的步骤,包括:
    所述目标UE将生成的携带否认NACK信息的第三序列通过所述HARQ-ACK反馈信道发送至所述源UE;
    其中在组播通信模式下仅在接收失败时所述目标UE发送所述反馈信息。
  26. 根据权利要求14所述的传输反馈方法,其中,所述目标UE在所述时频传输资源上发送反馈信息后,若所述源UE与所述目标UE之间的单播或组播传输未成功时,还包括:
    确定启动重传过程,接收所述源UE发送的重新获取的所述时频传输资源。
  27. 一种源用户设备,包括:收发机、存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,所述收发机执行所述计算机程序时实现以下步骤:
    将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE;
    所述处理器用于:获取所述目标UE在所述时频传输资源上发送的反馈信息;
    根据所述反馈信息,确定单播或组播传输状态。
  28. 根据权利要求27所述的源用户设备,其中,所述时频传输资源至少包括:
    物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,所述PSCCH中携带有调度控制信息SCI,所述SCI用于指示所述HARQ-ACK反馈信道的位置信息。
  29. 根据权利要求27所述的源用户设备,其中,所述收发机将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE时,还用于:
    建立与至少一个所述目标UE之间的连接;
    自主选择或接收网络侧设备分配的所述时频传输资源,将所述时频传输资源发送至所述目标UE。
  30. 根据权利要求29所述的源用户设备,其中,所述收发机在建立与至少一个所述目标UE之间的连接时,还用于:
    在单播通信模式下,建立与一个所述目标UE之间的连接;
    在建立连接过程中,与一个所述目标UE协商或者交互确定源标识以及目标标识。
  31. 根据权利要求29所述的源用户设备,其中,所述收发机在建立与至少一个所述目标UE之间的连接时,还用于:
    在组播通信模式下,建立与至少两个所述目标UE之间的连接;
    在建立连接过程中,与至少两个所述目标UE协商或者交互确定一个目标组标识以及所述源UE与所述目标UE各自的标识信息。
  32. 根据权利要求29所述的源用户设备,其中,所述收发机在自主选择或接收网络侧设备分配的所述时频传输资源,将所述时频传输资源发送至所述目标UE时,还用于:
    在资源池中自主选择一个所述时频传输资源,将自主选择的所述时频传输资源发送至所述目标UE;或者
    在所述网络侧设备根据所述源UE的业务时延需求以及所述目标UE的处理能力分配一个所述时频传输资源后,接收所述网络侧设备所发送的所述时频传输资源并发送至所述目标UE。
  33. 根据权利要求30所述的源用户设备,其中,
    所述时频传输资源中携带的调度控制信息SCI包括目标标识指示和偏移值指示;或者
    所述SCI中在包括目标标识指示的基础上,还包括源标识指示或会话标识/序列标识指示;或者
    若所述源UE与所述目标UE连接过程中同时协商或者交互确定一个偏移值时,则所述SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
  34. 根据权利要求33所述的源用户设备,其中,所述处理器在获取所述 目标UE在所述时频传输资源上发送的反馈信息时,还用于:
    根据所述SCI获取第一序列;
    在所述时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取所述反馈信息。
  35. 根据权利要求34所述的源用户设备,其中,所述处理器在根据所述SCI获取第一序列时,还用于:
    在所述SCI中包括源标识指示时,获取所述目标UE根据***映射以及源标识,生成的第一序列;或者
    在所述SCI中包括目标标识指示时,获取所述目标UE根据目标标识以及偏移值,生成的第一序列,所述偏移值为所述SCI中指示的偏移值或者所述源UE与所述目标UE连接过程中协商或者交互确定的偏移值;或者
    在所述SCI中有会话标识/序列标识指示时,获取所述目标UE根据***映射以及会话标识/序列标识,生成的第一序列。
  36. 根据权利要求31所述的源用户设备,其中,所述处理器在获取所述目标UE在所述时频传输资源上发送的反馈信息时,还用于:
    获取所述目标UE根据目标组标识生成的一个第二序列;
    在所述时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,获取所述反馈信息。
  37. 根据权利要求31所述的源用户设备,其中,所述处理器在获取所述目标UE在所述时频传输资源上发送的反馈信息时,还用于:
    获取至少一个所述目标UE根据目标组标识以及对应的标识信息,所生成的第三序列;
    在所述时频传输资源的混合自动重传请求确认HARQ-ACK反馈信道上利用序列相关性进行滑动相关检测峰值,在根据一第三序列检测到否认NACK信息时,停止检测并确定获取所述反馈信息;
    其中,各所述目标UE的标识信息对应于不同的偏移。
  38. 根据权利要求27所述的源用户设备,其中,所述处理器根据所述反馈信息,确定单播或组播传输状态时,还用于:
    在接收到所述目标UE发送的确认ACK信息时,确定所述源UE与所述 目标UE之间的单播传输成功;
    在接收到所述目标UE发送的否认NACK信息时,确定所述源UE与所述目标UE之间的组播传输失败;
    其中,在单播通信模式下仅在接收成功时所述目标UE发送所述反馈信息,在组播通信模式下仅在接收失败时所述目标UE发送所述反馈信息。
  39. 根据权利要求27所述的源用户设备,其中,在所述源UE与所述目标UE之间的单播或组播传输失败时,所述收发机还用于:
    启动重传过程,向所述目标UE发送重新获取的所述时频传输资源。
  40. 一种目标用户设备,包括:收发机、存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,所述收发机执行所述计算机程序时实现以下步骤:
    接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源;
    在所述时频传输资源上发送反馈信息。
  41. 根据权利要求40所述的目标用户设备,其中,所述时频传输资源至少包括:
    物理直通共享信道PSSCH、物理直通控制信道PSCCH以及混合自动重传请求确认HARQ-ACK反馈信道,所述PSCCH中携带有调度控制信息SCI,所述SCI用于指示所述HARQ-ACK反馈信道的位置信息。
  42. 根据权利要求40所述的目标用户设备,其中,所述收发机接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源时,还用于:
    建立与所述源UE之间的连接;
    接收所述源UE所发送的所述时频传输资源。
  43. 根据权利要求41所述的目标用户设备,其中,所述收发机在所述时频传输资源上发送反馈信息时,还用于:
    对所述PSCCH进行盲检,获取所述PSCCH、所述PSSCH以及所述HARQ-ACK反馈信道的位置信息;
    在获取所述PSSCH的位置信息后,对所述PSSCH进行解析获取单播或 组播传输状态,根据单播或组播传输状态确定反馈信息;
    将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE。
  44. 根据权利要求43所述的目标用户设备,其中,
    在单播通信模式下,所述SCI包括目标标识指示和偏移值指示;或者
    在单播通信模式下,所述SCI中在包括目标标识指示的基础上,还可包括源标识指示或会话标识/序列标识指示,其中源标识以及目标标识在所述目标UE与所述源UE建立连接时协商或者交互确定;或者
    在单播通信模式下,所述目标UE与所述源UE建立连接时协商或者交互确定源标识、目标标识以及偏移值时,则所述SCI中在包括目标标识指示的基础上,还可包括源标识指示或者会话标识/序列标识指示。
  45. 根据权利要求44所述的目标用户设备,其中,所述收发机根据单播或组播传输状态确定反馈信息时,还用于:
    在所述目标UE与所述源UE之间的单播传输成功时,根据所述SCI生成携带确认ACK信息的第一序列。
  46. 根据权利要求45所述的目标用户设备,其中,所述收发机根据所述SCI生成携带确认ACK信息的第一序列时,还用于:
    在所述SCI中包括源标识指示时,根据***映射以及源标识生成第一序列;或者
    在所述SCI中包括目标标识指示时,根据目标标识以及偏移值生成第一序列;或者
    在所述SCI中有会话标识/序列标识指示时,根据***映射以及会话标识/序列标识生成第一序列。
  47. 根据权利要求45所述的目标用户设备,其中,所述收发机将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE时,还用于:
    将携带确认ACK信息的第一序列通过所述HARQ-ACK反馈信道发送至所述源UE;
    其中在单播通信模式下仅在接收成功时所述目标UE发送所述反馈信息。
  48. 根据权利要求43所述的目标用户设备,其中,所述收发机根据单播或组播传输状态确定反馈信息时,还用于:
    在与所述源UE之间的组播传输失败时,根据目标组标识生成携带否认NACK信息的一个第二序列,其中目标组标识在至少两个所述目标UE与所述源UE建立组播连接时协商或者交互确定。
  49. 根据权利要求43所述的目标用户设备,其中,所述收发机根据单播或组播传输状态确定反馈信息时,还用于:
    与所述源UE之间的组播传输失败时,根据目标组标识以及对应的标识信息生成携带否认NACK信息的第三序列;
    其中目标组标识以及所述源UE和所述目标UE各自的标识信息,在至少两个所述目标UE与所述源UE建立连接时协商或者交互确定,各所述目标UE的标识信息对应于不同的偏移。
  50. 根据权利要求48所述的目标用户设备,其中,所述收发机将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE时,还用于:
    将携带否认NACK信息的第二序列通过所述HARQ-ACK反馈信道发送至所述源UE;
    其中在组播通信模式下仅在接收失败时所述目标UE发送所述反馈信息。
  51. 根据权利要求49所述的目标用户设备,其中,将所述反馈信息通过所述HARQ-ACK反馈信道发送至所述源UE时,收发机还用于:
    将生成的携带否认NACK信息的第三序列通过所述HARQ-ACK反馈信道发送至所述源UE;
    其中在组播通信模式下仅在接收失败时所述目标UE发送所述反馈信息。
  52. 根据权利要求40所述的目标用户设备,其中,所述收发机在所述时频传输资源上发送反馈信息后,若所述源UE与所述目标UE之间的单播或组播传输未成功时,还用于:
    确定启动重传过程,接收所述源UE发送的重新获取的所述时频传输资源。
  53. 一种计算机可读存储介质,其上存储有计算机程序,该计算机程序被处理器执行时实现如权利要求1至13或者14至26中任一项所述的传输反馈方法中的步骤。
  54. 一种源用户设备,包括:
    第一发送模块,用于将用于反馈单播或组播传输的反馈信息的时频传输资源,发送至与源用户设备UE建立连接的至少一个目标UE;
    获取模块,用于获取所述目标UE在所述时频传输资源上发送的反馈信息;
    确定模块,用于根据所述反馈信息,确定单播或组播传输状态。
  55. 一种目标用户设备,包括:
    接收模块,用于接收源用户设备UE发送的用于反馈单播或组播传输的反馈信息的时频传输资源;
    第二发送模块,用于在所述时频传输资源上发送反馈信息。
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