WO2020133503A1 - 通信反馈方法、装置、设备及存储介质 - Google Patents

通信反馈方法、装置、设备及存储介质 Download PDF

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Publication number
WO2020133503A1
WO2020133503A1 PCT/CN2018/125824 CN2018125824W WO2020133503A1 WO 2020133503 A1 WO2020133503 A1 WO 2020133503A1 CN 2018125824 W CN2018125824 W CN 2018125824W WO 2020133503 A1 WO2020133503 A1 WO 2020133503A1
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Prior art keywords
multicast
feedback
channel quality
target
resource
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PCT/CN2018/125824
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English (en)
French (fr)
Inventor
赵群
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to US17/419,624 priority Critical patent/US11818075B2/en
Priority to PCT/CN2018/125824 priority patent/WO2020133503A1/zh
Priority to CN201880002709.1A priority patent/CN109792371B/zh
Publication of WO2020133503A1 publication Critical patent/WO2020133503A1/zh
Anticipated expiration legal-status Critical
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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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1864ARQ related signaling
    • 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 signalling, i.e. of overhead other than pilot signals
    • H04L5/0055Physical resource allocation for ACK/NACK
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094Indication of how sub-channels of the path are allocated
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/30Resource management for broadcast services
    • 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
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/40Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]

Definitions

  • the present disclosure relates to the field of communication technology, and in particular, to a communication feedback method, device, device, and storage medium.
  • the current wireless communication system can support direct connection communication between devices.
  • the direct communication method has the characteristics of short delay and small signaling overhead, and is very suitable for communication between the device and other devices in the vicinity.
  • the direct communication method also supports multicast communication and HARQ (Hybrid Automatic Repeat Request) mechanism, that is, the HARQ mechanism can be realized when the sender performs multicast communication with multiple receivers.
  • HARQ Hybrid Automatic Repeat Request
  • the multicast sender sends communication data to multiple multicast receivers through a certain resource, and also sends SCI (Sidelink Control Information) associated with the communication data to multiple multicast receivers.
  • the resource is carried in the SCI .
  • the multicast receiving end receives the SCI, the resource is determined, and the communication data is received based on the resource.
  • the multicast receiving end does not receive the communication data correctly, it feeds back a NACK (Nacknowledgement, negative confirmation character) to the multicast sending end.
  • NACK Negacknowledgement, negative confirmation character
  • the communication data is retransmitted, and when the multicast sender does not receive the NACK, the communication data transmission is considered successful, Then, the communication data is not retransmitted.
  • the multicast receiving end does not receive the SCI correctly, it will not feed back any information to the multicast sending end.
  • the multicast sender does not receive the NACK, it will mistakenly believe that the communication data is successfully transmitted, and will not retransmit the communication data. Therefore, the above scheme may cause the loss of communication data and reduce the transmission reliability.
  • the present disclosure provides a communication feedback method, device, equipment, and storage medium, which can solve the problems of the related technology.
  • the technical solution is as follows:
  • a communication feedback method which is applied to a sending end, and the method includes:
  • a target sub-collection is determined in a set of multicast receiving devices, the set of multicast receiving devices includes a plurality of multicast receiving ends receiving multicast communications, and the target sub-set includes at least one target of the plurality of multicast receiving ends Multicast receiver;
  • Sending first control signaling where the first control signaling is used to instruct the target multicast receiving end in the target subset to use the first feedback mode for feedback, and the first feedback mode is when the When the communication data sent by the multicast sending end is fed back, ACK is fed back, and when the communication data sent by the multicast sending end is not received correctly, NACK is fed back;
  • the first control signaling is also used to instruct other multicast receivers other than the target subset to use the second feedback mode for feedback, where the second feedback mode is when the multicast sender correctly receives When the communication data sent by the multicast sending end is not correctly received, NACK is fed back.
  • the sending the first control signaling includes:
  • the first control signaling carries resource indication information
  • the resource indication information is used to indicate a first resource for the at least one target multicast receiving end to send feedback information.
  • the resource indication information includes a first resource for the at least one target multicast receiver to send feedback information
  • the resource indication information includes an offset between the first resource and a designated resource, and the designated resource is a second resource for the multicast sender to send communication data, or includes the other multicast receiving
  • the third end sends feedback information to the third resource.
  • the first resources that are used by different target multicast receivers to send feedback information are orthogonal.
  • the first resource for the target multicast receiver to send feedback information is orthogonal to the third resource for the other multicast receiver to send feedback information.
  • the third resource for multiple other multicast receivers to send feedback information is the same.
  • the determining the target subset in the set of multicast receiving devices includes:
  • the channel quality between the selected and the multicast sending end is lower than other multicast receiving ends or a preset channel quality and at least one target multicast receiving end that does not exceed a preset number , Added to the target subset, including:
  • the method further includes:
  • any one of the multiple multicast receiving ends is used when the channel quality with the multicast sending end is lower than the second preset channel quality, Sending channel quality report signaling to the multicast sender, where the channel quality report signaling carries the channel quality;
  • At least one target multicast receiving end whose channel quality between the selected and the multicast sending end is lower than other multicast receiving ends or the preset channel quality and does not exceed a preset number is added to the target subset include:
  • a communication feedback method which is applied to a multicast receiving end, and the method includes:
  • the first feedback mode or the second feedback mode is used for feedback
  • the first control signaling is used to instruct the target multicast receiving end in the target subset to use the first feedback mode for feedback.
  • the first feedback mode is when the communication data sent by the multicast sending end is correctly received Feedback ACK, feedback NACK when the communication data sent by the multicast sending end is not received correctly;
  • the first control signaling is also used to instruct other multicast receivers other than the target subset to use the second feedback mode for feedback, where the second feedback mode is when the multicast sender correctly receives When the communication data sent by the multicast sending end is not correctly received, NACK is fed back.
  • the feedback based on the first control signaling using the first feedback mode or the second feedback mode includes:
  • the first feedback mode is used for feedback.
  • the feedback based on the first control signaling using the first feedback mode or the second feedback mode includes:
  • the first feedback mode is used for feedback ;
  • the second feedback mode is used. Feedback.
  • the first control signaling carries resource indication information, and the resource indication information is used to indicate a first resource for the target multicast receiver to send feedback information; the first feedback mode is used Give feedback, including:
  • the NACK is sent through the first resource.
  • the resource indication information includes an offset between a first resource for sending feedback information by the target multicast receiving end and a designated resource, where the designated resource is for the multicast
  • the second resource for sending communication data by the sending end, or a third resource for sending feedback information by other multicast receiving ends; the method further includes:
  • the first resource is determined according to the designated resource and the offset.
  • the first resources that are used by different target multicast receivers to send feedback information are orthogonal.
  • the first resource for the target multicast receiver to send feedback information is orthogonal to the third resource for the other multicast receiver to send feedback information.
  • the third resource for multiple other multicast receivers to send feedback information is the same.
  • the method further includes:
  • channel quality report signaling is sent to the multicast sender, and the channel quality report signaling carries the channel quality.
  • the method further includes:
  • a communication feedback device which is applied to a multicast sending end, and the device includes:
  • a target determining module configured to determine a target sub-collection in the set of multicast receiving devices, the set of multicast receiving devices includes multiple multicast receivers receiving multicast communications, and the target sub-set includes the multiple multicasts At least one target multicast receiver in the receiver;
  • the sending module is used to send first control signaling, and the first control signaling is used to instruct the target multicast receiving end in the target subset to use the first feedback mode for feedback.
  • the first feedback mode is ACK is fed back when the communication data sent by the multicast sender is correctly received, and NACK is fed back when the communication data sent by the multicast sender is not received correctly;
  • the first control signaling is also used to instruct other multicast receivers other than the target subset to use the second feedback mode for feedback, where the second feedback mode is when the multicast sender correctly receives When the communication data sent by the multicast sending end is not correctly received, NACK is fed back.
  • the sending module includes:
  • a first sending unit configured to separately send the first control signaling to each target multicast receiving end in the target subset, where the first control signaling is used to indicate that the first feedback mode is adopted;
  • a second sending unit configured to send the first control signaling multicast to the multiple multicast receiving ends, and the first control signaling carries a device of the target multicast receiving end in the target subset Logo.
  • the first control signaling carries resource indication information
  • the resource indication information is used to indicate a first resource for the at least one target multicast receiving end to send feedback information.
  • the resource indication information includes a first resource for the at least one target multicast receiver to send feedback information
  • the resource indication information includes an offset between the first resource and a designated resource, and the designated resource is a second resource for the multicast sender to send communication data, or includes the other multicast receiving
  • the third end sends feedback information to the third resource.
  • the first resources that are used by different target multicast receivers to send feedback information are orthogonal.
  • the first resource for the target multicast receiver to send feedback information is orthogonal to the third resource for the other multicast receiver to send feedback information.
  • the third resource for multiple other multicast receivers to send feedback information is the same.
  • the target determination module is configured to select from the set of multicast receiving devices that the channel quality with the multicast sending end is lower than other multicast receiving ends or presets At least one target multicast receiving end whose channel quality does not exceed a preset number is added to the target subset.
  • the target determination module includes:
  • An obtaining unit configured to receive channel quality report signaling sent by at least one multicast receiver of the plurality of multicast receivers, the channel quality report signaling carrying the corresponding multicast receiver and the multicast sender The channel quality between the two; or, measuring the channel quality between the multiple multicast receiving ends and the multicast sending ends, respectively;
  • the target determining unit is configured to select at least one of the channel quality with the multicast sending end that is lower than other multicast receiving ends or the first preset channel quality and does not exceed the preset number according to the acquired channel quality
  • the target multicast receiver is added to the target subset.
  • the device further includes:
  • An obtaining module configured to obtain the preset number predefined in the preset protocol or the first preset channel quality
  • the acquisition module is further configured to receive second control signaling sent by the base station, where the second control signaling carries the preset number, or the second control signaling carries the first preset channel quality.
  • any one of the multiple multicast receiving ends is used when the channel quality with the multicast sending end is lower than the second preset channel quality, Sending channel quality report signaling to the multicast sender, where the channel quality report signaling carries the channel quality;
  • the target determination module also includes:
  • a receiving unit configured to receive channel quality report signaling sent by at least one multicast receiving end among the multiple multicast receiving ends;
  • the target determining unit is configured to add the multicast receiving end that does not exceed the preset number among the at least one multicast receiving end to the target subset.
  • a communication feedback device which is applied to a multicast receiving end, and the device includes:
  • the receiving module is used to receive the first control signaling sent by the multicast sending end when the second feedback mode is used for feedback by default;
  • a feedback module configured to perform feedback in the first feedback mode or the second feedback mode based on the first control signaling
  • the first control signaling is used to instruct the target multicast receiving end in the target subset to use the first feedback mode for feedback.
  • the first feedback mode is when the communication data sent by the multicast sending end is correctly received Feedback ACK, feedback NACK when the communication data sent by the multicast sending end is not received correctly;
  • the first control signaling is also used to instruct other multicast receivers other than the target subset to use the second feedback mode for feedback, where the second feedback mode is when the multicast sender correctly receives When the communication data sent by the multicast sending end is not correctly received, NACK is fed back.
  • the feedback module is further configured to use the first feedback method for feedback when the first control signaling is unicast signaling sent by the multicast sending end.
  • the feedback module includes:
  • the first feedback unit is used when the first control signaling is the multicast signaling sent by the multicast sending end and the first control signaling carries the device identification of the multicast receiving end. Feedback in the first feedback mode;
  • the second feedback unit is used when the first control signaling is the multicast signaling sent by the multicast sending end, and the first control signaling does not carry the device identification of the multicast receiving end
  • the second feedback mode performs feedback.
  • the first control signaling carries resource indication information
  • the resource indication information is used to indicate a first resource for the target multicast receiver to send feedback information
  • the feedback module further includes:
  • a first sending unit configured to send the ACK through the first resource when it is determined that the communication data sent by the multicast sending end is correctly received
  • the second sending unit is configured to send the NACK through the first resource when it is determined that the communication data sent by the multicast sending end is not received correctly.
  • the resource indication information includes an offset between a first resource for sending feedback information by the target multicast receiving end and a designated resource, where the designated resource is for the multicast
  • the designated resource is for the multicast
  • the device further includes:
  • the determining module is configured to determine the first resource according to the specified resource and the offset.
  • the first resources that are used by different target multicast receivers to send feedback information are orthogonal.
  • the first resource for the target multicast receiver to send feedback information is orthogonal to the third resource for the other multicast receiver to send feedback information.
  • the third resource for multiple other multicast receivers to send feedback information is the same.
  • the device further includes:
  • a measurement module used to measure the channel quality between the multicast receiving end and the multicast sending end
  • a third sending module configured to send channel quality report signaling to the multicast sender, where the channel quality report signaling carries the channel quality;
  • the fourth sending module is configured to send channel quality report signaling to the multicast sender when the channel quality is lower than the second preset channel quality, and the channel quality report signaling carries the channel quality.
  • the device further includes:
  • a receiving module configured to receive third control signaling sent by a base station, where the third control signaling carries the second preset channel quality
  • the receiving module is further configured to receive fourth control signaling sent by the multicast sending end, where the fourth control signaling carries the second preset channel quality.
  • a multicast sender is provided, and the multicast sender includes:
  • Memory for storing processor executable signaling
  • the processor is configured to:
  • a target sub-collection is determined in a set of multicast receiving devices, the set of multicast receiving devices includes a plurality of multicast receiving ends receiving multicast communications, and the target sub-set includes at least one target of the plurality of multicast receiving ends Multicast receiver;
  • Sending first control signaling where the first control signaling is used to instruct the target multicast receiving end in the target subset to use the first feedback mode for feedback, and the first feedback mode is when the When the communication data sent by the multicast sending end is fed back, ACK is fed back, and when the communication data sent by the multicast sending end is not received correctly, NACK is fed back;
  • the first control signaling is also used to instruct other multicast receivers other than the target subset to use the second feedback mode for feedback, where the second feedback mode is when the multicast sender correctly receives When the communication data sent by the multicast sending end is not correctly received, NACK is fed back.
  • a multicast receiving end is provided, and the multicast receiving end includes:
  • Memory for storing processor executable signaling
  • the processor is configured to:
  • the first feedback mode or the second feedback mode is used for feedback
  • the first control signaling is used to instruct the target multicast receiving end in the target subset to use the first feedback mode for feedback.
  • the first feedback mode is when the communication data sent by the multicast sending end is correctly received Feedback ACK, feedback NACK when the communication data sent by the multicast sending end is not received correctly;
  • the first control signaling is also used to instruct other multicast receivers other than the target subset to use the second feedback mode for feedback.
  • the second feedback mode is when the multicast sender correctly receives When the communication data sent by the multicast sending end is not correctly received, NACK is fed back.
  • a computer-readable storage medium wherein the computer-readable storage medium stores at least one piece of signaling, and the signaling is loaded and executed by a processor to implement the first The operation performed in the communication feedback method described in the aspect.
  • a computer-readable storage medium where at least one signaling is stored in the computer-readable storage medium, and the signaling is loaded and executed by a processor to implement a second The operation performed in the communication feedback method described in the aspect.
  • a target subset is determined in the multicast receiving equipment set, and the target subset includes at least one target multicast receiving end among multiple multicast receiving ends, and the first control is sent Signaling, so as to instruct the target multicast receivers in the target subset to use the first feedback mode for feedback, while other multicast receivers use the second feedback mode for feedback.
  • the first feedback method adopted by all multicast receivers the problem of communication data loss due to incorrect reception of SCI is effectively avoided, and transmission reliability is improved.
  • the second feedback mode adopted by all multicast receivers it can reduce signaling overhead and save feedback resources.
  • the channel quality measured by the multicast receiver is lower than the second preset channel quality
  • the channel quality is reported to the multicast sender, which not only enables the multicast sender to obtain the channel quality of the receiver with lower channel quality, but also Can reduce signaling overhead.
  • the channel quality between each multicast receiving end and the multicast sending end can be obtained by measuring the channel quality of the multicast sending end.
  • Channel quality and there is no need for the receiver to report channel quality, which reduces signaling overhead.
  • the sending end determines whether to retransmit based on the information fed back by the target multicast receiving end and the information fed back by other multicast receiving ends.
  • the communication process can be determined In various situations occurring in different situations, it is possible to determine whether to retransmit in a targeted manner for different situations, which can not only improve transmission reliability, but also reduce signaling overhead as much as possible and save communication resources.
  • the first resource for different target multicast receivers to send feedback information is orthogonal, and/or the first resource for the target multicast receiver to send feedback information, and the third resource for other multicast receivers to send feedback information Orthogonal resources can avoid mutual interference between feedback information and improve accuracy.
  • resources for sending feedback information to multiple other multicast receivers are the same, and sharing resources by multiple other multicast receivers not only enables accurate feedback, but also saves feedback resources.
  • Fig. 1 is a schematic structural diagram of a communication system according to an exemplary embodiment
  • Fig. 2 is a flowchart of a communication feedback method according to an exemplary embodiment
  • Fig. 3 is a flowchart of a communication feedback method according to an exemplary embodiment
  • Fig. 4 is a flowchart of a communication feedback method according to an exemplary embodiment
  • Fig. 5 is a flowchart of a communication feedback method according to an exemplary embodiment
  • Fig. 6 is a block diagram of a communication feedback device according to an exemplary embodiment
  • Fig. 7 is a block diagram of a communication feedback device according to an exemplary embodiment
  • Fig. 8 is a block diagram of a communication device according to an exemplary embodiment.
  • Embodiments of the present disclosure provide a communication feedback method, device, device, and storage medium. The disclosure will be described in detail below with reference to the drawings.
  • Fig. 1 is a schematic structural diagram of a communication system according to an exemplary embodiment.
  • the communication system includes a multicast sending terminal 101 and multiple multicast receiving terminals 102.
  • the multicast sending end 101 and the multicast receiving end 102 may be any type of device.
  • the multicast sending end 101 is an in-vehicle device, a handheld device, or a roadside device
  • the multicast receiving end 102 may be an in-vehicle device, a handheld device, or Roadside equipment.
  • the multicast sending end 101 and the multicast receiving end 102 can communicate via a direct link.
  • the communication mode of the direct link has the characteristics of short delay and small signaling overhead, and also supports the multicast transmission mode and the HARQ mechanism of the multicast transmission mode.
  • the multiple multicast receiving ends 102 may perform feedback based on the HARQ mechanism.
  • the first feedback method is: when the communication data sent by the multicast sending terminal 101 is correctly received, ACK is fed back, and when the communication data sent by the multicast sending terminal 101 is not correctly received, NACK is fed back.
  • the second feedback method is: when the communication data sent by the multicast sender is correctly received, no feedback is given, and when the communication data sent by the multicast sender 101 is not correctly received, NACK is fed back.
  • the multicast sending end 101 determines a target sub-collection in the set of multicast receiving devices.
  • the target sub-collection includes at least one target multicast receiving end, so that the target multicast receiving end
  • the first feedback method is used for feedback
  • the other multicast receivers 102 other than the target multicast receiver use the second feedback method for feedback, which can reduce signaling overhead, save feedback resources, and effectively avoid due to incorrect
  • the problem of communication data loss caused by receiving SCI improves the transmission reliability.
  • Fig. 2 is a flowchart of a communication feedback method according to an exemplary embodiment, which is applied to the sending end. As shown in Fig. 2, it includes the following steps:
  • a target sub-set is determined in the set of multicast receiving devices.
  • the multicast receiving device set includes multiple multicast receiving terminals that receive multicast communication, and the target sub-set includes at least one target multicast receiving terminal among the multiple multicast receiving terminals.
  • step 202 first control signaling is sent.
  • the first control signaling is used to instruct the target multicast receiver in the target subset to use the first feedback method for feedback.
  • the first feedback method is to feed back ACK (acknowledgement, confirmation when the communication data sent by the multicast transmitter is correctly received Character), feedback NACK when the communication data sent by the multicast sender is not received correctly;
  • the first control signaling is also used to instruct other multicast receivers outside the target subset to use the second feedback mode for feedback.
  • the second feedback mode is that when the communication data sent by the multicast sender is correctly received, no feedback is provided. NACK is fed back when the communication data sent by the multicast sender is not received correctly.
  • the method provided by the embodiment of the present disclosure determines the target sub-collection in the set of multicast receiving devices.
  • the target sub-collection includes at least one target multicast receiving end among the multiple multicast receiving ends, and sends the first control signaling to indicate the target child
  • the target multicast receivers in the set use the first feedback method for feedback, while other multicast receivers use the second feedback method for feedback.
  • the problem of communication data loss due to incorrect reception of SCI is effectively avoided, and the transmission reliability is improved, while the second receiver is adopted by all multicast receivers.
  • it can reduce signaling overhead and save feedback resources.
  • sending the first control signaling includes:
  • the first control signaling is used to indicate the adoption of the first feedback mode
  • the first control signaling carries resource indication information
  • the resource indication information is used to indicate a first resource for at least one target multicast receiving end to send feedback information.
  • the resource indication information includes a first resource for at least one target multicast receiver to send feedback information
  • the resource indication information includes an offset between the first resource and a designated resource, and the designated resource is a second resource for the multicast sender to send communication data, or a third resource for the other multicast receiver to send feedback information.
  • the first resources that are used by different target multicast receivers to send feedback information are orthogonal.
  • the first resource for the target multicast receiver to send feedback information is orthogonal to the third resource for the other multicast receiver to send feedback information.
  • the third resource for multiple other multicast receivers to send feedback information is the same.
  • determining the target subset in the set of multicast receiving devices includes:
  • At least one target multicast receiving end with a channel quality lower than that of other multicast receiving ends or a preset channel quality and not exceeding a preset number is selected and added to the target Sub-collections, including:
  • the acquired channel quality select at least one target multicast receiving end whose channel quality with the multicast sending end is lower than other multicast receiving ends or the first preset channel quality and does not exceed a preset number, and add to the target sub set.
  • the method further includes:
  • any one of the multiple multicast receiving ends is used to send to the multicast when the channel quality with the multicast sending end is lower than the second preset channel quality
  • the terminal sends channel quality report signaling, and the channel quality report signaling carries the channel quality
  • Target multicast receiver whose channel quality with the multicast sender is lower than other multicast receivers or the preset channel quality and not exceed the preset number, and add to the target subset, including:
  • Fig. 3 is a flowchart of a communication feedback method according to an exemplary embodiment, which is applied to a receiving end. As shown in Fig. 3, the method includes the following steps:
  • step 301 in the case of feedback in the second feedback mode by default, the first control signaling sent by the multicast sending end is received.
  • step 302 based on the first control signaling, the first feedback mode or the second feedback mode is used for feedback.
  • the first control signaling is used to instruct the target multicast receiver in the target subset to use the first feedback method for feedback.
  • the first feedback method is to feed back ACK when the communication data sent by the multicast sender is correctly received.
  • NACK is fed back when the communication data sent by the multicast sender is received;
  • the first control signaling is also used to instruct other multicast receivers outside the target subset to use the second feedback mode for feedback.
  • the second feedback mode is that when the communication data sent by the multicast sender is correctly received, no feedback is provided. NACK is fed back when the communication data sent by the multicast sender is not received correctly.
  • the method provided by the embodiment of the present disclosure receives the first control signaling sent by the multicast sending end, and uses the first feedback mode or the second feedback mode for feedback based on the first control signaling, thereby indicating the target group in the target subset
  • the broadcast receiving end uses the first feedback method for feedback, while the other multicast receiving ends use the second feedback method for feedback.
  • the problem of communication data loss due to incorrect reception of SCI is effectively avoided, and the transmission reliability is improved, while the second receiver is adopted by all multicast receivers.
  • it can reduce signaling overhead and save feedback resources.
  • the first feedback mode or the second feedback mode is used for feedback, including:
  • the first feedback mode is used for feedback.
  • the first feedback mode or the second feedback mode is used for feedback, including:
  • the first feedback mode is used for feedback
  • the second feedback mode is used for feedback.
  • the first control signaling carries resource indication information
  • the resource indication information is used to indicate the first resource for the target multicast receiving end to send feedback information
  • using the first feedback mode for feedback includes:
  • NACK is sent through the first resource.
  • the resource indication information includes an offset between the first resource for the target multicast receiver to send feedback information and a designated resource, and the designated resource is the second resource for the multicast sender to send communication data.
  • Resources, or a third resource for other multicast receivers to send feedback information; the method further includes:
  • the first resource is determined according to the specified resource and the offset.
  • the first resources for different target multicast receivers to send feedback information are orthogonal.
  • the first resource for the target multicast receiver to send feedback information is orthogonal to the third resource for the other multicast receiver to send feedback information.
  • the third resource for multiple other multicast receivers to send feedback information is the same.
  • the method further includes:
  • the channel quality report signaling carries the channel quality
  • the channel quality report signaling is sent to the multicast sender, and the channel quality report signaling carries the channel quality.
  • the method further includes:
  • Fig. 4 is a flowchart of a communication feedback method according to an exemplary embodiment, which is applied to a multicast sending end and a multicast receiving end. As shown in Fig. 4, it includes the following steps:
  • step 401 the multicast sending end acquires the channel quality between the multiple multicast receiving ends and the multicast sending end according to the set of multicast receiving devices.
  • the set of multicast receiving devices includes multiple multicast receiving ends that perform multicast communication with the multicast sending end.
  • the first feedback method is: when the communication data sent by the multicast sending end is correctly received, ACK is fed back, and when the communication data sent by the multicast sending end is not correctly received, NACK is fed back.
  • the second feedback method is: when the communication data sent by the multicast sending end is correctly received, no feedback is given, and when the communication data sent by the multicast sending end is not correctly received, NACK is fed back.
  • each multicast receiver When the multicast sender performs multicast communication with multiple multicast receivers, if multiple multicast receivers use the first feedback method for feedback, each multicast receiver must report to the group when the communication data is correctly received. The broadcast sender feeds back ACK, and feeds back NACK when communication data is not received correctly, which will cause a large signaling overhead. It is also necessary to allocate different resources to each multicast receiver for each multicast receiver to send feedback information , Which consumes too much feedback resources.
  • the channel quality between the multicast sending end and the different multicast receiving ends is also different.
  • the communication quality depends on the channel quality between one or more multicast receivers and multicast senders with lower channel quality.
  • multiple multicast receivers are configured with different feedback modes.
  • the multicast receivers with lower channel quality use the first feedback mode, and the multicast receivers with higher channel quality use the second feedback mode. Not only can reduce signaling overhead and save feedback resources, but also can effectively avoid the problem of communication data loss due to incorrect reception of SCI and improve transmission reliability.
  • step 401 includes any one of the following steps 4011-4013:
  • Each multicast receiving end measures the channel quality between the multicast receiving end and the multicast sending end, and sends channel quality reporting signaling to the multicast sending end.
  • the channel quality reporting signaling carries the measured channel quality.
  • the multicast sending end receives the channel quality report signaling sent by multiple multicast receiving ends, so as to obtain the channel quality of each multicast receiving end.
  • the channel quality can be determined by the measurement results of the multicast receiving end measuring the signal sent by the multicast sending end.
  • the channel quality can be determined by RSRP (Reference Signal Receiving Power), RSRQ (Reference Signal Receiving Quality), reference signal reception Quality), RSSI (ReceivedSignalStrengthIndication, received signal strength indication), SINR (Signal to InterferenceplusNoiseRatio, signal to interference plus noise ratio), packet reception error rate and other measurement results are expressed in at least one.
  • the multicast receiving end when the multicast sending end sends control signaling, communication data, or other data to the multicast receiving end, the multicast receiving end can perform measurements to obtain the data from the multicast sending end to the multicast receiving end.
  • the channel quality reports the measured channel quality to the multicast sender by signaling the channel quality to the multicast sender.
  • the channel quality report signaling can also carry the device identification of the multicast receiving end, so that the multicast sending end determines the device identification of the multicast receiving end, distinguishes different multicast receiving ends according to the device identification, and can also use the device identification to The multicast receiver sends control signaling to configure the feedback method for each multicast receiver.
  • the device identification is used to determine the only corresponding device in the multicast communication, which may be the source address, physical layer address or MAC (Media Access Control) layer address of the device.
  • the operation of the multicast receiving end to send the channel quality report signaling can be automatically triggered by the multicast receiving end according to the protocol with the multicast sending end, or triggered by the control signaling sent by the multicast sending end or the base station That is, the multicast sending end or the base station sends reporting signaling to the multicast receiving end.
  • the multicast receiving end receives the reporting signaling, it measures the channel quality and reports it.
  • Each multicast receiving end measures the channel quality between the multicast receiving end and the multicast sending end. When the channel quality is lower than the second preset channel quality, it sends channel quality report signaling to the multicast sending end.
  • the quality report signaling carries the measured channel quality, and when the channel quality is not lower than the second preset channel quality, the channel quality report signaling is no longer sent to the multicast sender.
  • the multicast sending end receives the channel quality report signaling sent by at least one multicast receiving end among the multiple multicast receiving ends, so as to obtain the channel quality of the at least one multicast receiving end.
  • the multicast receiving end can judge the channel quality after measuring the channel quality Whether it is lower than the second preset channel quality, only when the channel quality is lower than the second preset channel quality, the channel quality is reported to the multicast sending end by reporting signaling to the multicast sending end channel quality. When the channel quality is not lower than the second preset channel quality, the channel quality is no longer reported to the multicast sender.
  • the channel quality report signaling can also carry the device identification of the multicast receiving end, so that the multicast sending end determines the device identification of the multicast receiving end, distinguishes different multicast receiving ends according to the device identification, and can also use the device identification to The multicast receiver sends control signaling to configure the feedback method for each multicast receiver.
  • the second preset channel quality may be a preset RSRP threshold, RSRQ threshold, RSSI threshold, SINR threshold, data packet reception error rate threshold, and so on.
  • the second preset channel quality may be pre-defined according to the protocol between the multicast sending end and the multicast receiving end, or configured by the multicast receiving end, or configured by the multicast sending end or the base station.
  • the operation of the multicast receiving end to send the channel quality report signaling can be automatically triggered by the multicast receiving end according to the protocol with the multicast sending end, or triggered by the control signaling sent by the multicast sending end or the base station , That is, the multicast sending end or the base station sends reporting signaling to the multicast receiving end.
  • the multicast receiving end receives the reporting signaling, it measures the channel quality and reports it, then the second preset channel quality can be carried in the reporting signaling Sent to the multicast receiver.
  • the multicast receiving end receives the third control signaling sent by the base station, and the third control signaling carries the second preset channel quality; or, the multicast receiving end receives the fourth control signaling sent by the multicast sending end, the fourth The control signaling carries the second preset channel quality.
  • corresponding second preset channel qualities may be set respectively, and when the multicast receiving end measures multiple channel qualities, it is determined whether at least one of the channel qualities is below Corresponding second preset channel quality, when at least one channel quality is lower than the corresponding second preset channel quality, the measured multiple channel quality is reported to the multicast by reporting signaling to the multicast sender channel quality The sender. When at least one channel quality is not lower than the second preset channel quality, the measured multiple channel quality is no longer reported to the multicast sender.
  • which of the multiple channel qualities is used as the at least one channel quality can be pre-defined according to the protocol between the multicast sending end and the multicast receiving end, or configured by the multicast receiving end, or by the group Broadcast sender or base station to configure.
  • the multicast sending end separately measures the channel quality between multiple multicast receiving ends and the multicast sending end.
  • the channel quality can also be determined by the measurement results of the channel between the multicast sending end and the multicast receiving end.
  • the multicast receiving end sends signaling, communication data, or other data to the multicast sending end through the channel
  • the multicast sending end can measure to obtain the channel quality of the channel from the multicast receiving end to the multicast sending end, and use the channel to communicate with each other.
  • the ease of determining the channel quality from the multicast sender to the multicast receiver By measuring the channel quality at the multicast sender, there is no need for the multicast receiver to report the channel quality, which reduces signaling overhead.
  • Channel reciprocity refers to transmission on the same frequency resource and different time resources.
  • the time resource interval is short, it can be considered that the transmitted signals experience the same channel fading, that is, the channel quality is the same.
  • the multicast sender selects from the set of multicast receiving devices that the channel quality with the multicast sender is lower than that of other multicast receivers or the preset channel quality and does not exceed the preset Let the number of at least one target multicast receiver be added to the target subset.
  • the multicast sending end selects at least one multicast receiving end with a lower channel quality and no more than a preset number as the target multicast receiving end according to the channel quality of each multicast receiving end, and adds it to the target sub Set, so that the channel quality of the target multicast receiver in the target subset is lower than the channel quality of other multicast receivers outside the target subset.
  • at least one multicast receiver with a channel quality lower than the preset channel quality and no more than a preset number is selected as the target multicast receiver and added to the target sub-collection, so that the target multicast receiver in the target sub-collection The channel quality is lower than the preset channel quality.
  • step 402 may include any one of the following steps 4021-4023:
  • the preset number may be pre-defined according to the protocol of the multicast sending end, or may be configured by the multicast sending end or the base station. For example, the multicast sending end obtains a preset number predefined in a preset protocol, or the multicast sending end receives second control signaling sent by the base station, and the second control signaling carries the preset number.
  • the order can be sorted according to a predetermined method, such as sorting according to the channel quality from high to low, and sorting from the channel quality from low to Sort in a high order or sort in other ways.
  • the target multicast receiver can be selected in the determined order, so that the channel quality between the selected target multicast receiver and the multicast sender is lower than that of other unselected multicast receivers and multicast senders. Channel quality between terminals.
  • the channel quality between the multiple multicast receivers and the multicast sender select a target multicast receiver whose channel quality is lower than the first preset channel quality and add it to the target subset.
  • the first preset channel quality may be a preset RSRP threshold, RSRQ threshold, RSSI threshold, SINR threshold, data packet reception error rate threshold, and so on.
  • the first preset channel quality may be predefined according to the protocol of the multicast sending end, or may be configured by the multicast sending end or the base station.
  • the multicast sending end obtains the first preset channel quality predefined in the preset protocol; or, the multicast sending end receives the second control signaling sent by the base station and carries the first preset channel quality.
  • step 402 may include any one of the following steps 4024-4027:
  • the multicast sending end receives the channel quality report signaling sent by at least one multicast receiving end among the multiple multicast receiving ends, and adds at least one multicast receiving end to the target subset.
  • the multicast sending end no longer needs to judge the channel quality measured by the at least one multicast receiving end.
  • the multicast sending end receives the channel quality report signaling sent by at least one multicast receiving end among multiple multicast receiving ends, selects from at least one multicast receiving end no more than a predetermined number of target multicast receiving ends, and The selected target multicast receiver is added to the target subset.
  • the multicast sending end regards the preset number as the maximum number of target multicast receiving ends.
  • the number of at least one multicast receiving end does not exceed the preset number
  • at least one multicast receiving end is taken as the target multicast receiving end and added to the target Child collection.
  • a target multicast receiving end that does not exceed the preset number is selected from the at least one multicast receiving end, and the selected target multicast receiving end is added to the target subset.
  • the multicast sending end receives the channel quality report signaling sent by at least one multicast receiving end among the multiple multicast receiving ends, and selects a target group from at least one multicast receiving end whose channel quality is lower than the first preset channel quality.
  • the broadcast receiver adds the selected target multicast receiver to the target subset.
  • the first preset channel quality is lower than the second preset channel quality
  • the channel quality reported by at least one multicast receiver is lower than the second preset channel quality
  • the multicast sender obtains the channel quality of at least one multicast receiver
  • the target multicast receiver is added to the target subset.
  • the multicast sending end receives the channel quality report signaling sent by at least one multicast receiving end among the multiple multicast receiving ends, and selects from at least one multicast receiving end that the channel quality is lower than the first preset channel quality, and does not If more than the preset number of target multicast receivers are added, the selected target multicast receivers are added to the target subset.
  • step 403 the multicast sending end sends the first control signaling.
  • step 404 the multicast receiving end receives the first control signaling, and uses the first feedback mode or the second feedback mode for feedback based on the first control signaling.
  • the first control signaling is used to instruct the target multicast receiver in the target subset to use the first feedback mode for feedback, and also instructs other multicast receivers outside the target subset to use the second feedback mode for feedback.
  • Each multicast receiver uses the second feedback mode by default.
  • the multicast sender sends the first control signaling to notify the target multicast receiver to use the first feedback method for feedback, while the other multicast receivers still use the second feedback. Feedback.
  • steps 403 and 404 may include the following steps 4031-4032:
  • the multicast sending end separately sends first control signaling to each target multicast receiving end in the target subset.
  • the first control signaling is used to indicate that the first feedback mode is adopted.
  • the first control signaling is unicast signaling sent by the multicast sending end, and the target multicast receiving end that receives the first control signaling uses the first feedback mode for feedback.
  • the multicast sending end no longer sends the first control signaling to other multicast receiving ends, and the other multicast receiving ends still use the default second feedback mode for feedback.
  • the multicast sending end multicasts the first control signaling to multiple multicast receiving ends.
  • the first control signaling carries the device identification of the target multicast receiving end in the target subset. That is, the first control signaling is the multicast signaling sent by the multicast sending end, and each multicast receiving end will receive the first control signaling.
  • the multicast receiving end receives the first control signaling, determines that the first control signaling is the multicast signaling sent by the multicast sending end, and acquires the first control signaling to carry Device identifier of, determines whether the first control signaling carries the device identifier of the multicast receiver.
  • the first control signaling carries the device identification of the multicast receiving end, it indicates that the multicast receiving end is the target multicast receiving end, and the first feedback mode is used for feedback.
  • the first control signaling does not carry the device identification of the multicast receiving end, it indicates that the multicast receiving end is not the target multicast receiving end, and the second feedback mode is used for feedback.
  • control signaling sent by the multicast sending end to the multicast receiving end may be direct link control signaling.
  • control signaling may be direct link control signaling.
  • step 405 the multicast sending end multicasts the communication data and the SCI associated with the communication data to multiple multicast receiving ends.
  • each multicast receiver performs feedback based on the communication data and SCI reception status and the determined feedback mode.
  • the multicast sender multicasts the communication data to the multiple multicast receivers, and also multicasts the SCI associated with the communication data .
  • the SCI carries a second resource for sending communication data.
  • each multicast receiving end can receive the SCI, determine the second resource for sending communication data, and receive the communication data through the second resource.
  • the multicast sending end sends the communication data first, and then sends the SCI, or the multicast sending end sends the SCI first, and then sends the communication data, or the multicast sending end sends the communication data and the SCI in parallel.
  • each multicast receiver can use a certain feedback method to feed back based on the communication data and SCI reception.
  • the communication feedback includes:
  • the multicast receiver When the multicast receiver correctly receives the SCI, it determines the second resource for sending communication data, receives the communication data through the second resource, and performs feedback.
  • the target multicast receiver When the target multicast receiver correctly receives the communication data, it feeds back an ACK to the multicast sender. When the target multicast receiver does not receive the communication data correctly, it feeds back a NACK to the multicast sender.
  • the multicast sending end can determine whether to retransmit according to the information fed back by the multicast receiving end.
  • the retransmission includes any one of 4063-4065:
  • the multicast sender receives the NACK sent by any multicast receiver, it retransmits the communication data.
  • the multicast sender when the multicast sender receives the NACK sent by any one or more target multicast receivers, and receives ACKs sent by other target multicast receivers, it sends the NACK to the target multicast
  • the receiving end sends communication data without sending communication data to other multicast receiving ends or target multicast receiving ends that send ACKs to increase transmission efficiency.
  • the multicast sending end receives the NACK sent by any other multicast receiving end except the target multicast receiving end, it sends communication data to multiple multicast receiving ends, such as sending the communication data by multicast.
  • the target multicast receiver does not feed back any information, indicating that the target multicast receiver is likely to have received no SCI As a result, the communication data cannot be received, and the communication data is retransmitted at this time.
  • the multicast sending end when it performs retransmission, it can multicast the communication data to multiple multicast receiving ends, or only send the communication data to the target multicast receiving end that does not feed back any information. Then send the communication data to other multicast receivers other than the target multicast receiver or the target multicast receiver to send ACK to increase the transmission efficiency.
  • the communication data is no longer retransmitted.
  • the multicast sender can identify missed detections or data reception errors based on information fed back by the target multicast receiver and other multicast receivers.
  • the feedback information of the multicast receiver and other multicast receivers can be distinguished, which can determine various situations that occur during the communication process, and determine whether to retransmit in a targeted manner for different situations, which can not only improve transmission reliability, but also try to Reduce signaling overhead and save communication resources.
  • the method provided by the embodiment of the present disclosure determines the target sub-collection in the set of multicast receiving devices.
  • the target sub-collection includes at least one target multicast receiving end among the multiple multicast receiving ends, and sends the first control signaling to indicate the target child
  • the target multicast receivers in the set use the first feedback method for feedback, while other multicast receivers use the second feedback method for feedback.
  • the problem of communication data loss due to incorrect reception of SCI is effectively avoided, and the transmission reliability is improved, while the second receiver is adopted by all multicast receivers.
  • it can reduce signaling overhead and save feedback resources.
  • the channel quality measured by the multicast receiving end is lower than the second preset channel quality
  • the channel quality is reported to the multicast sending end, which enables the multicast sending end to obtain the channel quality of the multicast receiving end with a lower channel quality , Can also reduce signaling overhead.
  • the channel quality between each multicast receiving end and the multicast sending end can be obtained by measuring the channel quality of the multicast sending end.
  • Channel quality and there is no need for the multicast receiver to report channel quality, reducing signaling overhead.
  • the multicast sending end determines whether to retransmit based on the information fed back by the target multicast receiving end and the information fed back by other multicast receiving ends.
  • the feedback information of the target multicast receiving end and other multicast receiving ends it can be determined In various situations occurring during the communication process, it is possible to determine whether to retransmit in a targeted manner according to different situations, which can not only improve transmission reliability, but also reduce signaling overhead as much as possible and save communication resources.
  • Fig. 5 is a flowchart of a communication feedback method according to an exemplary embodiment, which is applied to a multicast sending end and a multicast receiving end. As shown in Fig. 5, it includes the following steps:
  • step 501 the multicast sending end acquires the channel quality between multiple multicast receiving ends and the multicast sending end according to the set of multicast receiving devices.
  • the multicast sending terminal selects from the set of multicast receiving devices at least one target multicast receiving terminal whose channel quality with the multicast sending terminal is lower than other multicast receiving terminals and does not exceed a preset number, Add to target sub-collection.
  • Steps 501-502 are similar to the above steps 401-402 and will not be repeated here.
  • step 503 the multicast sending end sends first control signaling, and the first control signaling carries resource indication information.
  • the resource indication information is used to indicate a first resource for at least one target multicast receiver to send feedback information.
  • the resource indication information includes but is not limited to the following two cases of 5031 and 5031:
  • the resource indication information includes a first resource for at least one target multicast receiver to send feedback information. Based on the resource indication information, the target multicast receiver can directly determine the first resource used when sending the feedback information.
  • the multicast sending end may separately send the first control signaling to each target multicast receiving end, and each first control signaling carries the first resource of each target multicast receiving end.
  • the multicast sending end may multicast the same first control signaling to at least one target multicast receiving end, where the first control signaling carries the first resource of each target multicast receiving end .
  • the first control signaling carries the correspondence between the device identification of each target multicast receiving end and the first resource, and when each target multicast receiving end receives the first control signaling, the local end device is determined according to the correspondence Identify the corresponding first resource.
  • the multicast sending end may additionally send control signaling to other multicast receiving ends, and the control signaling carries a third resource for the other multicast receiving end to send feedback information.
  • the multicast sending end may multicast the same first control signaling to each multicast receiving end, where the first control signaling carries the first resource of each target multicast receiving end, In addition, it can also carry third resources of other multicast receivers.
  • the resource indication information includes an offset between the first resource and a designated resource, and the designated resource is a second resource for the multicast sender to send communication data, or a third resource for the other multicast receiver to send feedback information .
  • the resource indication information includes an offset between the first resource and the second resource, and then when the target multicast receiving end receives the first control signaling, it acquires the information carried by the first control signaling The offset, when the SCI is received, obtains the second resource carried by the SCI, and the first resource can be obtained according to the offset and the second resource.
  • the target multicast receiving end can receive the communication data sent by the multicast sending end through the second resource, and send the feedback information to the multicast sending end through the first resource.
  • the offset may include at least one of time resource offset and frequency resource offset. For example, if the time resource offset is a and the frequency resource offset is 0, after the target multicast receiver receives the communication data through the second resource, on the subsequent a-th time resource and the same frequency resource as the communication data Send feedback information to the multicast sender.
  • the resource indication information includes an offset between the first resource and the third resource, and when the target multicast receiving end receives the first control signaling, the first control signaling is carried , The first resource can be obtained according to the offset and the third resource.
  • the third resource may be carried by the multicast sending end in control signaling that is multicast sent to multiple multicast receiving ends, and the control signaling may be the above-mentioned first control signaling, or may be other than the first control signaling. In addition to another control signaling sent separately.
  • first resource, the second resource, and the third resource may be arbitrarily configured by the multicast sender, or arbitrarily configured by the base station.
  • Each resource is determined by time-domain resources, frequency-domain resources, and/or code-domain resources in the communication system, and time-domain resources, frequency-domain resources, and/or code-domain resources can be configured or changed according to requirements.
  • time domain resources may be time slots, frames, subframes, symbols, etc.
  • frequency domain resources may be subcarriers, bandwidth parts, and so on.
  • the arrangement order of the multiple multicast receivers can be determined, and the resources can be shifted in sequence according to the arrangement order to obtain the resources of each multicast receiver.
  • the arrangement order of the multiple multicast receivers may be in the order of the channel quality of the multiple multicast receivers from high to low or from low to high, or may be in the order of the device identification of the multiple multicast receivers, Or you can follow other orders.
  • the multicast sending end sends the control signaling is similar to the above step 5031, and will not be repeated here. Then, when the multicast sending end sends the same first control signaling to at least one target multicast receiving end, the first control signaling may carry multiple offsets, and the multiple offsets follow multiple target groups
  • the arrangement order of the broadcast receivers is equivalent to providing the correspondence between each target multicast receiver and the offset.
  • the target multicast receiving end determines the corresponding offset according to the arrangement order of the local end, and then determines the first resource according to the offset and the designated resource.
  • the first resources for different target multicast receivers to send feedback information are orthogonal to avoid mutual interference of information fed back by different target multicast receivers.
  • the first resource for the target multicast receiver to send feedback information is orthogonal to the third resource for the other multicast receiver to send feedback information, to avoid the target multicast receiver and other groups The information fed back from the broadcast receiver interferes with each other.
  • the resources for multiple other multicast receivers to send feedback information are the same, which can ensure that multiple other multicast receivers share resources, as long as one other multicast receiver sends a NACK through this resource After that, the multicast sender can be notified that the communication data cannot be received correctly, and the other multicast receivers no longer need to send NACK through this resource.
  • step 504 the multicast receiving end receives the first control signaling, and uses the first feedback mode or the second feedback mode for feedback based on the first control signaling.
  • step 505 the multicast sending end multicasts the communication data to multiple multicast receiving ends through the second resource.
  • step 506 the multicast sender multicasts the SCI associated with the communication data to multiple multicast receivers.
  • the SCI may be sent through any resource configured by the multicast sending end or the base station, and the SCI carries the second resource.
  • Each multicast receiving end may receive the SCI, determine the second resource for sending communication data, and receive the communication data through the second resource.
  • each multicast receiving end performs feedback according to the communication data and SCI reception status and the determined feedback mode.
  • the communication feedback includes:
  • the multicast receiver When the multicast receiver correctly receives the SCI, it receives the communication data through the second resource and feeds back.
  • the target multicast receiver correctly receives the communication data, it feeds back an ACK to the multicast transmitter through the first resource.
  • the target multicast receiving end does not receive the communication data correctly, it feeds back a NACK to the multicast sending end through the first resource.
  • a NACK is fed back to the multicast sender through the third resource .
  • the multicast sending end will detect the first resource and receive the information fed back by the target multicast receiving end through the first resource, and will also detect the third resource and receive the information fed back by the other multicast receiving end through the third resource. Determine whether to retransmit according to the information fed back by the multicast receiver.
  • the retransmission process is similar to the retransmission process in step 406 above, and will not be repeated here.
  • the method provided by the embodiment of the present disclosure determines the target sub-collection in the set of multicast receiving devices.
  • the target sub-collection includes at least one target multicast receiving end among the multiple multicast receiving ends, and sends the first control signaling to indicate the target child
  • the target multicast receivers in the set use the first feedback method for feedback, while other multicast receivers use the second feedback method for feedback.
  • the problem of communication data loss due to incorrect reception of SCI is effectively avoided, and the transmission reliability is improved, while the second receiver is adopted by all multicast receivers.
  • it can reduce signaling overhead and save feedback resources.
  • the first resource for different target multicast receivers to send feedback information is orthogonal, and/or the first resource for the target multicast receiver to send feedback information, and the third resource for other multicast receivers to send feedback information Orthogonal resources can avoid mutual interference between feedback information and improve accuracy.
  • resources for sending feedback information to multiple other multicast receivers are the same, and sharing resources by multiple other multicast receivers not only enables accurate feedback, but also saves feedback resources.
  • Fig. 6 is a block diagram of a communication feedback device according to an exemplary embodiment, which is applied to a transmitting end.
  • the device includes: a target determination module 601 and a transmission module 602.
  • the target determination module 601 is configured to determine a target sub-collection according to the set of multicast receiving devices.
  • the set of multicast receiving devices includes multiple multicast receivers receiving multicast communications, and the target sub-set includes at least one target among the multiple multicast receivers.
  • the sending module 602 is used to send first control signaling, and the first control signaling is used to instruct the target multicast receiving end in the target subset to use the first feedback mode for feedback, the first feedback mode is when the multicast is received correctly
  • the communication data sent by the sender is fed back ACK, and the NACK is fed back when the communication data sent by the multicast sender is not received correctly;
  • the first control signaling is also used to instruct other multicast receivers outside the target subset to use the second feedback mode for feedback.
  • the second feedback mode is that when the communication data sent by the multicast sender is correctly received, no feedback is provided. NACK is fed back when the communication data sent by the multicast sender is not received correctly.
  • An apparatus provided in an embodiment of the present disclosure determines a target sub-collection in a set of multicast receiving devices.
  • the target sub-collection includes at least one target multicast receiving end among a plurality of multicast receiving ends, and sends first control signaling to indicate the target
  • the target multicast receivers in the set use the first feedback method for feedback, while other multicast receivers use the second feedback method for feedback.
  • the problem of communication data loss due to incorrect reception of SCI is effectively avoided, and transmission reliability is improved.
  • the second feedback mode adopted by all multicast receivers it can reduce signaling overhead and save feedback resources.
  • the sending module 602 includes:
  • the first sending unit is configured to send first control signaling to each target multicast receiving end in the target subset, and the first control signaling is used to indicate that the first feedback mode is adopted;
  • the second sending unit is configured to multicast the first control signaling to multiple multicast receivers, and the first control signaling carries the device identification of the target multicast receiver in the target subset.
  • the first control signaling carries resource indication information
  • the resource indication information is used to indicate a first resource for at least one target multicast receiving end to send feedback information.
  • the resource indication information includes a first resource for at least one target multicast receiver to send feedback information
  • the resource indication information includes an offset between the first resource and a designated resource, and the designated resource is a second resource for the multicast sender to send communication data, or a third resource for the other multicast receiver to send feedback information.
  • the first resources that are used by different target multicast receivers to send feedback information are orthogonal.
  • the first resource for the target multicast receiver to send feedback information is orthogonal to the third resource for the other multicast receiver to send feedback information.
  • the third resource for multiple other multicast receivers to send feedback information is the same.
  • the target determination module 601 is used to select from the set of multicast receiving devices that the channel quality with the multicast sending end is lower than other multicast receiving ends or the preset channel quality and does not exceed A preset number of at least one target multicast receiver is added to the target subset.
  • the target determination module 601 includes:
  • An obtaining unit configured to receive channel quality reporting signaling sent by at least one multicast receiving end among multiple multicast receiving ends, and the channel quality reporting signaling carries the channel quality between the corresponding multicast receiving end and the multicast sending end; or , Measure the channel quality between multiple multicast receivers and multicast senders respectively;
  • the target determining unit is used to select at least one target multicast reception whose channel quality with the multicast sending end is lower than other multicast receiving ends or the first preset channel quality and does not exceed a preset number according to the acquired channel quality End, add to the target sub-collection.
  • the channel quality acquisition unit is further configured to receive channel quality report signaling sent by at least one multicast receiver of multiple multicast receivers, and the channel quality report signaling carries the corresponding multicast receiver Channel quality with the multicast sender; or, separately measure the channel quality between multiple multicast receivers and the multicast sender.
  • the device further includes:
  • An obtaining module configured to obtain the preset number or the first preset channel quality predefined in the preset protocol
  • the acquisition module is also used to receive second control signaling sent by the base station, where the second control signaling carries a preset number, or the second control signaling carries a first preset channel quality.
  • any one of the multiple multicast receiving ends is used to send to the multicast when the channel quality with the multicast sending end is lower than the second preset channel quality
  • the terminal sends channel quality report signaling, and the channel quality report signaling carries the channel quality
  • the target determination module 601 also includes:
  • a receiving unit configured to receive channel quality report signaling sent by at least one multicast receiving end among multiple multicast receiving ends;
  • the target determining unit is configured to add at least one multicast receiving end that does not exceed a preset number of multicast receiving ends to the target subset.
  • the communication feedback device provided in the above embodiments only uses the division of the above functional modules as examples for feedback. In practical applications, the above functions can be allocated by different functional modules according to needs.
  • the internal structure of the multicast sending end is divided into different functional modules to complete all or part of the functions described above.
  • the communication feedback device and the communication feedback method embodiment provided in the above embodiments belong to the same concept. For the specific implementation process, refer to the method embodiments, and details are not described here.
  • Fig. 7 is a block diagram of a communication feedback device according to an exemplary embodiment, which is applied to a transmitting end.
  • the device includes: a receiving module 701 and a feedback module 702.
  • the receiving module 701 is configured to receive the first control signaling sent by the multicast sending end when the second feedback mode is used for feedback by default;
  • the feedback module 702 is configured to use the first feedback mode or the second feedback mode for feedback based on the first control signaling;
  • the first control signaling is used to instruct the target multicast receiver in the target subset to use the first feedback method for feedback.
  • the first feedback method is to feed back ACK when the communication data sent by the multicast sender is correctly received.
  • NACK is fed back when the communication data sent by the multicast sender is received;
  • the first control signaling is also used to instruct other multicast receivers outside the target subset to use the second feedback mode for feedback.
  • the second feedback mode is that when the communication data sent by the multicast sender is correctly received, no feedback is provided. NACK is fed back when the communication data sent by the multicast sender is not received correctly.
  • An apparatus provided in an embodiment of the present disclosure determines a target sub-collection in a set of multicast receiving devices.
  • the target sub-collection includes at least one target multicast receiving end among a plurality of multicast receiving ends, and sends first control signaling to indicate the target
  • the target multicast receivers in the set use the first feedback method for feedback, while other multicast receivers use the second feedback method for feedback.
  • the problem of communication data loss due to incorrect reception of SCI is effectively avoided, and transmission reliability is improved.
  • the second feedback mode adopted by all multicast receivers it can reduce signaling overhead and save feedback resources.
  • the feedback module 702 is further configured to use the first feedback mode for feedback when the first control signaling is unicast signaling sent by the multicast sender.
  • the feedback module 702 includes:
  • the first feedback unit is configured to use the first feedback mode for feedback when the first control signaling is the multicast signaling sent by the multicast sending end, and the first control signaling carries the device identification of the multicast receiving end;
  • the second feedback unit is configured to use the second feedback mode for feedback when the first control signaling is the multicast signaling sent by the multicast sending end, and the first control signaling does not carry the device identification of the multicast receiving end.
  • the first control signaling carries resource indication information
  • the resource indication information is used to indicate the first resource for the target multicast receiver to send feedback information
  • the feedback module 702 further includes:
  • the first sending unit is configured to send ACK through the first resource when it is determined that the communication data sent by the multicast sending end is correctly received;
  • the second sending unit is configured to send NACK through the first resource when it is determined that the communication data sent by the multicast sending end is not received correctly.
  • the resource indication information includes an offset between the first resource for the target multicast receiver to send feedback information and a designated resource, and the designated resource is the second resource for the multicast sender to send communication data.
  • Resources, or a third resource for other multicast receivers to send feedback information; the device also includes:
  • the determining module is used to determine the first resource according to the specified resource and the offset.
  • the first resources that are used by different target multicast receivers to send feedback information are orthogonal.
  • the first resource for the target multicast receiver to send feedback information is orthogonal to the third resource for the other multicast receiver to send feedback information.
  • the third resource for multiple other multicast receivers to send feedback information is the same.
  • the device further includes:
  • the measurement module is used to measure the channel quality between the multicast receiving end and the multicast sending end;
  • the third sending module is used to send channel quality report signaling to the multicast sender, and the channel quality report signaling carries the channel quality; or,
  • the fourth sending module is configured to send channel quality report signaling to the multicast sender when the channel quality is lower than the second preset channel quality, and the channel quality report signaling carries the channel quality.
  • the device further includes:
  • a receiving module configured to receive third control signaling sent by the base station, where the third control signaling carries the second preset channel quality
  • the receiving module is further configured to receive fourth control signaling sent by the multicast sending end, where the fourth control signaling carries the second preset channel quality.
  • the communication feedback device provided in the above embodiments only uses the division of the above functional modules as examples for feedback. In practical applications, the above functions can be allocated by different functional modules according to needs.
  • the internal structure of the multicast receiver is divided into different functional modules to complete all or part of the functions described above.
  • the communication feedback device and the communication feedback method embodiment provided in the above embodiments belong to the same concept. For the specific implementation process, refer to the method embodiments, and details are not described here.
  • the communication device 800 may be used to execute the communication feedback method provided in the above embodiments.
  • the communication device 800 may include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, and a sensor component 814 , ⁇ 816.
  • the processing component 802 generally controls the overall operations of the communication device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 802 may include one or more processors 820 to perform signaling to complete all or part of the steps in the above method.
  • the processing component 802 may include one or more modules to facilitate interaction between the processing component 802 and other components.
  • the processing component 802 may include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
  • the memory 804 is configured to store various types of data to support operation at the communication device 800. Examples of these data include signaling for any application or method operating on the communication device 800, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 804 may be implemented by any type of volatile or nonvolatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable and removable Programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM erasable and removable Programmable read only memory
  • PROM programmable read only memory
  • ROM read only memory
  • magnetic memory flash memory
  • flash memory magnetic disk or optical disk.
  • the power supply component 806 provides power to various components of the communication device 800.
  • the power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the communication device 800.
  • the multimedia component 808 includes a screen between the communication device 800 and the user that provides an output interface.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touch, swipe, and gestures on the touch panel. The touch sensor may not only sense the boundary of the touch or sliding action, but also detect the duration and pressure related to the touch or sliding operation.
  • the multimedia component 808 includes a front camera and/or a rear camera. When the communication device 800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 810 is configured to output and/or input audio signals.
  • the audio component 810 includes a microphone (MIC), and when the communication device 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal.
  • the received audio signal may be further stored in the memory 804 or transmitted via the communication component 816.
  • the audio component 810 further includes a speaker for outputting audio signals.
  • the I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module.
  • the peripheral interface module may be a keyboard, a click wheel, or a button. These buttons may include, but are not limited to: home button, volume button, start button, and lock button.
  • the sensor component 814 includes one or more sensors for providing the communication device 800 with status assessment in various aspects.
  • the sensor component 814 can detect the on/off state of the communication device 800, and the relative positioning of the components, such as the display and keypad of the communication device 800, and the sensor component 814 can also detect the communication device 800 or a component of the communication device 800 The position changes, the presence or absence of user contact with the communication device 800, the orientation or acceleration/deceleration of the communication device 800, and the temperature change of the communication device 800.
  • the sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact.
  • the sensor component 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 814 may further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • the communication component 816 is configured to facilitate wired or wireless communication between the communication device 800 and other devices.
  • the communication device 800 may access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof.
  • the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication.
  • NFC near field communication
  • the communication device 800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), The programming gate array (FPGA), controller, microcontroller, microprocessor or other electronic components are implemented to implement the above-mentioned communication feedback method.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA programming gate array
  • controller, microcontroller, microprocessor or other electronic components are implemented to implement the above-mentioned communication feedback method.
  • a non-transitory computer-readable storage medium including signaling is also provided, such as a memory 804 including signaling, which can be executed by the processor 820 of the communication device 800 to complete the above method.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, or the like.
  • the program may be stored in an acquisition machine-readable storage medium,
  • the storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk.

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Abstract

本公开是关于一种通信反馈方法、装置、设备及存储介质,属于通信技术领域。方法包括:在组播接收设备集合中确定目标子集合;发送第一控制信令,所述第一控制信令用于指示所述目标子集合中的目标组播接收端采用第一反馈方式进行反馈;还用于指示所述目标子集合之外的其他组播接收端采用第二反馈方式进行反馈。既能够降低信令开销,节省反馈资源,还有效地避免了由于未正确接收到SCI而导致通信数据丢失的问题,提高了传输可靠性。

Description

通信反馈方法、装置、设备及存储介质 技术领域
本公开是关于通信技术领域,具体来说是关于一种通信反馈方法、装置、设备及存储介质。
背景技术
随着无线通信技术和车联网通信技术的不断发展,目前的无线通信系统能够支持设备之间的直连通信。直连通信的方式具有时延短和信令开销小等特点,非常适合设备与周边的其他设备之间的通信。直连通信方式还支持组播通信和HARQ(Hybrid Automatic Repeat Request,混合自动重传请求)机制,即能够在发送端与多个接收端进行组播通信时实现HARQ机制。
组播发送端通过某一资源向多个组播接收端发送通信数据,还会向多个组播接收端发送通信数据关联的SCI(Sidelink Control Information,直连控制信息),SCI中携带该资源。对于多个组播接收端中的每个组播接收端来说,当组播接收端接收到SCI时,确定该资源,基于该资源接收该通信数据。当组播接收端未正确接收到该通信数据时,向组播发送端反馈NACK(Nacknowledgement,否定确认字符)。而当组播接收端正确接收到该通信数据时,为了降低信令开销,将不再向组播发送端反馈任何信息。对于组播发送端来说,当组播发送端接收到NACK时,确定通信数据传输失败,则对通信数据进行重传,而当组播发送端未接收到NACK时,认为通信数据传输成功,则不再对通信数据进行重传。
但是,当组播接收端未正确接收到SCI时,也不会向组播发送端反馈任何信息。此时,组播发送端未接收到NACK,会误认为通信数据传输成功,也就不再对通信数据进行重传。因此上述方案可能导致通信数据丢失,降低了传输可靠性。
发明内容
本公开提供了一种通信反馈方法、装置、设备及存储介质,可以解决相关 技术的问题。所述技术方案如下:
根据本公开实施例的第一方面,提供了一种通信反馈方法,应用于发送端,所述方法包括:
在组播接收设备集合中确定目标子集合,所述组播接收设备集合包括接收组播通信的多个组播接收端,所述目标子集合包括所述多个组播接收端中至少一个目标组播接收端;
发送第一控制信令,所述第一控制信令用于指示所述目标子集合中的目标组播接收端采用第一反馈方式进行反馈,所述第一反馈方式为当正确接收到所述组播发送端发送的通信数据时反馈ACK,当未正确接收到所述组播发送端发送的通信数据时反馈NACK;
所述第一控制信令还用于指示所述目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,所述第二反馈方式为当正确接收到所述组播发送端发送的通信数据时不反馈,当未正确接收到所述组播发送端发送的通信数据时反馈NACK。
在一种可能实现方式中,所述发送第一控制信令,包括:
分别向所述目标子集合中的每个目标组播接收端发送所述第一控制信令,所述第一控制信令用于指示采用第一反馈方式;或者,
将所述第一控制信令组播发送给所述多个组播接收端,所述第一控制信令中携带所述目标子集合中的目标组播接收端的设备标识。
在另一种可能实现方式中,所述第一控制信令携带资源指示信息,所述资源指示信息用于指示供所述至少一个目标组播接收端发送反馈信息的第一资源。
在另一种可能实现方式中,所述资源指示信息包括供所述至少一个目标组播接收端发送反馈信息的第一资源;或者,
所述资源指示信息包括所述第一资源与指定资源之间的偏移量,所述指定资源为供所述组播发送端发送通信数据的第二资源,或者包括供所述其他组播接收端发送反馈信息的第三资源。
在另一种可能实现方式中,供不同目标组播接收端发送反馈信息的第一资源正交。
在另一种可能实现方式中,供所述目标组播接收端发送反馈信息的第一资源,与供所述其他组播接收端发送反馈信息的第三资源正交。
在另一种可能实现方式中,供多个其他组播接收端发送反馈信息的第三资源相同。
在另一种可能实现方式中,所述在组播接收设备集合中确定目标子集合,包括:
从所述组播接收设备集合中,选取与所述组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至所述目标子集合。
在另一种可能实现方式中,所述选取与所述组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至所述目标子集合,包括:
接收所述多个组播接收端中至少一个组播接收端发送的信道质量上报信令,所述信道质量上报信令携带对应组播接收端与所述组播发送端之间的信道质量;或者,
分别测量所述多个组播接收端与所述组播发送端之间的信道质量;
根据获取的信道质量,选取与所述组播发送端之间的信道质量低于其他组播接收端或第一预设信道质量且不超过所述预设数目的至少一个目标组播接收端,添加至所述目标子集合。
在另一种可能实现方式中,所述方法还包括:
获取预设协议中预定义的所述预设数目或所述第一预设信道质量;或者,
接收基站发送的第二控制信令,所述第二控制信令携带所述预设数目,或所述第二控制信令携带所述第一预设信道质量。
在另一种可能实现方式中,所述多个组播接收端中的任一组播接收端用于当与所述组播发送端之间的信道质量低于第二预设信道质量时,向所述组播发送端发送信道质量上报信令,所述信道质量上报信令携带所述信道质量;
所述选取与所述组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至所述目标子集合,包括:
接收所述多个组播接收端中至少一个组播接收端发送的信道质量上报信令;
将所述至少一个组播接收端中不超过所述预设数目的组播接收端添加至所述目标子集合。
根据本公开实施例的第二方面,提供了一种通信反馈方法,应用于组播接收端,所述方法包括:
默认采用第二反馈方式进行反馈的情况下,接收组播发送端发送的第一控制信令;
基于所述第一控制信令,采用第一反馈方式或第二反馈方式进行反馈;
所述第一控制信令用于指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,所述第一反馈方式为当正确接收到所述组播发送端发送的通信数据时反馈ACK,当未正确接收到所述组播发送端发送的通信数据时反馈NACK;
所述第一控制信令还用于指示所述目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,所述第二反馈方式为当正确接收到所述组播发送端发送的通信数据时不反馈,当未正确接收到所述组播发送端发送的通信数据时反馈NACK。
在一种可能实现方式中,所述基于所述第一控制信令,采用第一反馈方式或第二反馈方式进行反馈,包括:
当所述第一控制信令为所述组播发送端发送的单播信令时,采用所述第一反馈方式进行反馈。
在另一种可能实现方式中,所述基于所述第一控制信令,采用第一反馈方式或第二反馈方式进行反馈,包括:
当所述第一控制信令为所述组播发送端发送的组播信令,且所述第一控制信令携带所述组播接收端的设备标识时,采用所述第一反馈方式进行反馈;
当所述第一控制信令为所述组播发送端发送的组播信令,且所述第一控制信令未携带所述组播接收端的设备标识时,采用所述第二反馈方式进行反馈。
在另一种可能实现方式中,所述第一控制信令携带资源指示信息,所述资源指示信息用于指示供目标组播接收端发送反馈信息的第一资源;所述采用第一反馈方式进行反馈,包括:
当确定正确接收到所述组播发送端发送的通信数据时,通过所述第一资源发送所述ACK;
当确定未正确接收到所述组播发送端发送的通信数据时,通过所述第一资源发送所述NACK。
在另一种可能实现方式中,所述资源指示信息包括供所述目标组播接收端发送反馈信息的第一资源与指定资源之间的偏移量,所述指定资源为供所述组播发送端发送通信数据的第二资源,或者包括供其他组播接收端发送反馈信息的第三资源;所述方法还包括:
根据所述指定资源及所述偏移量,确定所述第一资源。
在另一种可能实现方式中,供不同目标组播接收端发送反馈信息的第一资源正交。
在另一种可能实现方式中,供所述目标组播接收端发送反馈信息的第一资源,与供所述其他组播接收端发送反馈信息的第三资源正交。
在另一种可能实现方式中,供多个其他组播接收端发送反馈信息的第三资源相同。
在另一种可能实现方式中,所述方法还包括:
测量所述组播接收端与所述组播发送端之间的信道质量;
向所述组播发送端发送信道质量上报信令,所述信道质量上报信令携带所述信道质量;或者,
当所述信道质量低于第二预设信道质量时,向所述组播发送端发送信道质量上报信令,所述信道质量上报信令携带所述信道质量。
在另一种可能实现方式中,所述方法还包括:
接收基站发送的第三控制信令,所述第三控制信令携带所述第二预设信道质量;或者,
接收所述组播发送端发送的第四控制信令,所述第四控制信令携带所述第二预设信道质量。
根据本公开实施例的第三方面,提供了一种通信反馈装置,应用于组播发送端,所述装置包括:
目标确定模块,用于在组播接收设备集合中确定目标子集合,所述组播接收设备集合包括接收组播通信的多个组播接收端,所述目标子集合包括所述多个组播接收端中至少一个目标组播接收端;
发送模块,用于发送第一控制信令,所述第一控制信令用于指示所述目标子集合中的目标组播接收端采用第一反馈方式进行反馈,所述第一反馈方式为当正确接收到所述组播发送端发送的通信数据时反馈ACK,当未正确接收到 所述组播发送端发送的通信数据时反馈NACK;
所述第一控制信令还用于指示所述目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,所述第二反馈方式为当正确接收到所述组播发送端发送的通信数据时不反馈,当未正确接收到所述组播发送端发送的通信数据时反馈NACK。
在一种可能实现方式中,所述发送模块,包括:
第一发送单元,用于分别向所述目标子集合中的每个目标组播接收端发送所述第一控制信令,所述第一控制信令用于指示采用第一反馈方式;
第二发送单元,用于将所述第一控制信令组播发送给所述多个组播接收端,所述第一控制信令中携带所述目标子集合中的目标组播接收端的设备标识。
在另一种可能实现方式中,所述第一控制信令携带资源指示信息,所述资源指示信息用于指示供所述至少一个目标组播接收端发送反馈信息的第一资源。
在另一种可能实现方式中,所述资源指示信息包括供所述至少一个目标组播接收端发送反馈信息的第一资源;或者,
所述资源指示信息包括所述第一资源与指定资源之间的偏移量,所述指定资源为供所述组播发送端发送通信数据的第二资源,或者包括供所述其他组播接收端发送反馈信息的第三资源。
在另一种可能实现方式中,供不同目标组播接收端发送反馈信息的第一资源正交。
在另一种可能实现方式中,供所述目标组播接收端发送反馈信息的第一资源,与供所述其他组播接收端发送反馈信息的第三资源正交。
在另一种可能实现方式中,供多个其他组播接收端发送反馈信息的第三资源相同。
在另一种可能实现方式中,所述目标确定模块,用于从所述组播接收设备集合中,选取与所述组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至所述目标子集合。
在另一种可能实现方式中,所述目标确定模块,包括:
获取单元,用于接收所述多个组播接收端中至少一个组播接收端发送的信 道质量上报信令,所述信道质量上报信令携带对应组播接收端与所述组播发送端之间的信道质量;或者,分别测量所述多个组播接收端与所述组播发送端之间的信道质量;
目标确定单元,用于根据获取的信道质量,选取与所述组播发送端之间的信道质量低于其他组播接收端或第一预设信道质量且不超过所述预设数目的至少一个目标组播接收端,添加至所述目标子集合。
在另一种可能实现方式中,所述装置还包括:
获取模块,用于获取预设协议中预定义的所述预设数目或所述第一预设信道质量;
所述获取模块,还用于接收基站发送的第二控制信令,所述第二控制信令携带所述预设数目,或所述第二控制信令携带所述第一预设信道质量。
在另一种可能实现方式中,所述多个组播接收端中的任一组播接收端用于当与所述组播发送端之间的信道质量低于第二预设信道质量时,向所述组播发送端发送信道质量上报信令,所述信道质量上报信令携带所述信道质量;
所述目标确定模块,还包括:
接收单元,用于接收所述多个组播接收端中至少一个组播接收端发送的信道质量上报信令;
目标确定单元,用于将所述至少一个组播接收端中不超过所述预设数目的组播接收端添加至所述目标子集合。
根据本公开实施例的第四方面,提供了一种通信反馈装置,应用于组播接收端,所述装置包括:
接收模块,用于默认采用第二反馈方式进行反馈的情况下,接收组播发送端发送的第一控制信令;
反馈模块,用于基于所述第一控制信令,采用第一反馈方式或第二反馈方式进行反馈;
所述第一控制信令用于指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,所述第一反馈方式为当正确接收到所述组播发送端发送的通信数据时反馈ACK,当未正确接收到所述组播发送端发送的通信数据时反馈NACK;
所述第一控制信令还用于指示所述目标子集合之外的其他组播接收端采 用第二反馈方式进行反馈,所述第二反馈方式为当正确接收到所述组播发送端发送的通信数据时不反馈,当未正确接收到所述组播发送端发送的通信数据时反馈NACK。
在一种可能实现方式中,所述反馈模块,还用于当所述第一控制信令为所述组播发送端发送的单播信令时,采用所述第一反馈方式进行反馈。
在另一种可能实现方式中,所述反馈模块,包括:
第一反馈单元,用于当所述第一控制信令为所述组播发送端发送的组播信令,且所述第一控制信令携带所述组播接收端的设备标识时,采用所述第一反馈方式进行反馈;
第二反馈单元,用于当所述第一控制信令为所述组播发送端发送的组播信令,且所述第一控制信令未携带所述组播接收端的设备标识时,采用所述第二反馈方式进行反馈。
在另一种可能实现方式中,所述第一控制信令携带资源指示信息,所述资源指示信息用于指示供目标组播接收端发送反馈信息的第一资源;所述反馈模块还包括:
第一发送单元,用于当确定正确接收到所述组播发送端发送的通信数据时,通过所述第一资源发送所述ACK;
第二发送单元,用于当确定未正确接收到所述组播发送端发送的通信数据时,通过所述第一资源发送所述NACK。
在另一种可能实现方式中,所述资源指示信息包括供所述目标组播接收端发送反馈信息的第一资源与指定资源之间的偏移量,所述指定资源为供所述组播发送端发送通信数据的第二资源,或者包括供其他组播接收端发送反馈信息的第三资源;所述装置还包括:
确定模块,用于根据所述指定资源及所述偏移量,确定所述第一资源。
在另一种可能实现方式中,供不同目标组播接收端发送反馈信息的第一资源正交。
在另一种可能实现方式中,供所述目标组播接收端发送反馈信息的第一资源,与供所述其他组播接收端发送反馈信息的第三资源正交。
在另一种可能实现方式中,供多个其他组播接收端发送反馈信息的第三资源相同。
在另一种可能实现方式中,所述装置还包括:
测量模块,用于测量所述组播接收端与所述组播发送端之间的信道质量;
第三发送模块,用于向所述组播发送端发送信道质量上报信令,所述信道质量上报信令携带所述信道质量;或者,
第四发送模块,用于当所述信道质量低于第二预设信道质量时,向所述组播发送端发送信道质量上报信令,所述信道质量上报信令携带所述信道质量。
在另一种可能实现方式中,所述装置还包括:
接收模块,用于接收基站发送的第三控制信令,所述第三控制信令携带所述第二预设信道质量;
所述接收模块,还用于接收所述组播发送端发送的第四控制信令,所述第四控制信令携带所述第二预设信道质量。
根据本公开实施例的第五方面,提供了一种组播发送端,所述组播发送端包括:
处理器;
用于存储处理器可执行信令的存储器;
其中,所述处理器被配置为:
在组播接收设备集合中确定目标子集合,所述组播接收设备集合包括接收组播通信的多个组播接收端,所述目标子集合包括所述多个组播接收端中至少一个目标组播接收端;
发送第一控制信令,所述第一控制信令用于指示所述目标子集合中的目标组播接收端采用第一反馈方式进行反馈,所述第一反馈方式为当正确接收到所述组播发送端发送的通信数据时反馈ACK,当未正确接收到所述组播发送端发送的通信数据时反馈NACK;
所述第一控制信令还用于指示所述目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,所述第二反馈方式为当正确接收到所述组播发送端发送的通信数据时不反馈,当未正确接收到所述组播发送端发送的通信数据时反馈NACK。
根据本公开实施例的第六方面,提供了一种组播接收端,所述组播接收端包括:
处理器;
用于存储处理器可执行信令的存储器;
其中,所述处理器被配置为:
默认采用第二反馈方式进行反馈的情况下,接收组播发送端发送的第一控制信令;
基于所述第一控制信令,采用第一反馈方式或第二反馈方式进行反馈;
所述第一控制信令用于指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,所述第一反馈方式为当正确接收到所述组播发送端发送的通信数据时反馈ACK,当未正确接收到所述组播发送端发送的通信数据时反馈NACK;
所述第一控制信令还用于指示所述目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,所述第二反馈方式为当正确接收到所述组播发送端发送的通信数据时不反馈,当未正确接收到所述组播发送端发送的通信数据时反馈NACK。
根据本公开实施例的第七方面,提供了一种计算机可读存储介质,所述计算机可读存储介质中存储有至少一条信令,所述信令由处理器加载并执行以实现如第一方面所述的通信反馈方法中所执行的操作。
根据本公开实施例的第八方面,提供了一种计算机可读存储介质,所述计算机可读存储介质中存储有至少一条信令,所述信令由处理器加载并执行以实现如第二方面所述的通信反馈方法中所执行的操作。
本公开实施例提供的方法、装置、设备及存储介质,在组播接收设备集合中确定目标子集合,目标子集合包括多个组播接收端中至少一个目标组播接收端,发送第一控制信令,从而指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,而其他组播接收端采用第二反馈方式进行反馈。与所有组播接收端均采用第一反馈方式相比,有效地避免了由于未正确接收到SCI而导致通信数据丢失的问题,提高了传输可靠性。而与所有组播接收端均采用第二反馈方式相比,能够降低信令开销,节省反馈资源。
并且,组播接收端测量的信道质量低于第二预设信道质量时,再将信道质量上报给组播发送端,既能够使组播发送端获取信道质量较低的接收端的信道 质量,还能够降低信令开销。
并且,考虑到上行信道的信道质量可以代表下行信道的信道质量,通过组播发送端测量信道质量的方式获取每个组播接收端与组播发送端之间的信道质量,既可以获取到准确的信道质量,而且无需接收端上报信道质量,降低了信令开销。
并且,发送端根据目标组播接收端反馈的信息和其他组播接收端反馈的信息确定是否进行重传,通过对目标组播接收端和其他组播接收端的反馈信息进行区分,能够确定通信过程中发生的多种情况,针对不同的情况针对性地确定是否进行重传,既能够提高传输可靠性,还能够尽可能地降低信令开销,节省通信资源。
并且,供不同目标组播接收端发送反馈信息的第一资源正交,和/或,供目标组播接收端发送反馈信息的第一资源,与供其他组播接收端发送反馈信息的第三资源正交,能够避免反馈信息之间的相互干扰,提高准确性。
并且,供多个其他组播接收端发送反馈信息的资源相同,由多个其他组播接收端共享资源,既能够实现准确地反馈,而且节省了反馈资源。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本公开的实施例,并与说明书一起用于解释本公开的原理。
图1是根据一示例性实施例示出的一种通信系统的结构示意图;
图2是根据一示例性实施例示出的一种通信反馈方法的流程图;
图3是根据一示例性实施例示出的一种通信反馈方法的流程图;
图4是根据一示例性实施例示出的一种通信反馈方法的流程图;
图5是根据一示例性实施例示出的一种通信反馈方法的流程图;
图6是根据一示例性实施例示出的一种通信反馈装置的框图;
图7是根据一示例性实施例示出的一种通信反馈装置的框图;
图8是根据一示例性实施例示出的一种通信设备的框图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚明白,下面结合实施方式和附图,对本公开做进一步详细说明。在此,本公开的示意性实施方式及其说明 用于解释本公开,但并不作为对本公开的限定。
本公开实施例提供一种通信反馈方法、装置、设备及存储介质,以下结合附图对本公开进行详细说明。
图1是根据一示例性实施例示出的一种通信系统的结构示意图,参见图1,该通信系统包括组播发送端101和多个组播接收端102。
组播发送端101和组播接收端102可以为任一类型的设备,例如,组播发送端101为车载设备、手持设备或者路边设备,组播接收端102可以为车载设备、手持设备或者路边设备。组播发送端101和组播接收端102之间可以通过直连链路进行通信。直连链路的通信方式具有时延短和信令开销小等特点,还支持组播传输方式和组播传输方式的HARQ机制。在组播发送端101与多个组播接收端102进行组播通信的过程中,多个组播接收端102可以基于HARQ机制进行反馈。
在本公开实施例中,设置两种反馈方式:
第一反馈方式为:当正确接收到组播发送端101发送的通信数据时反馈ACK,当未正确接收到组播发送端101发送的通信数据时反馈NACK。
第二反馈方式为:当正确接收到组播发送端发送的通信数据时不反馈,当未正确接收到组播发送端101发送的通信数据时反馈NACK。
为了在降低信令开销的情况下,提高传输可靠性,组播发送端101在组播接收设备集合中确定目标子集合,目标子集合包括至少一个目标组播接收端,使目标组播接收端采用第一反馈方式进行反馈,除目标组播接收端以外的其他组播接收端102采用第二反馈方式进行反馈,既能够降低信令开销,节省反馈资源,还能够有效地避免了由于未正确接收到SCI而导致通信数据丢失的问题,提高了传输可靠性。
图2是根据一示例性实施例示出的一种通信反馈方法的流程图,应用于发送端,如图2所示,包括以下步骤:
在步骤201中,在组播接收设备集合中确定目标子集合。
组播接收设备集合包括接收组播通信的多个组播接收端,目标子集合包括多个组播接收端中至少一个目标组播接收端。
在步骤202中,发送第一控制信令。
第一控制信令用于指示目标子集合中的目标组播接收端采用第一反馈方 式进行反馈,第一反馈方式为当正确接收到组播发送端发送的通信数据时反馈ACK(acknowledgement,确认字符),当未正确接收到组播发送端发送的通信数据时反馈NACK;
第一控制信令还用于指示目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,第二反馈方式为当正确接收到组播发送端发送的通信数据时不反馈,当未正确接收到组播发送端发送的通信数据时反馈NACK。
本公开实施例提供的方法,在组播接收设备集合中确定目标子集合,目标子集合包括多个组播接收端中至少一个目标组播接收端,发送第一控制信令,从而指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,而其他组播接收端采用第二反馈方式进行反馈。与所有组播接收端均采用第一反馈方式相比,有效地避免了由于未正确接收到SCI而导致通信数据丢失的问题,提高了传输可靠性,而与所有组播接收端均采用第二反馈方式相比,能够降低信令开销,节省反馈资源。
在一种可能实现方式中,发送第一控制信令,包括:
分别向目标子集合中的每个目标组播接收端发送第一控制信令,第一控制信令用于指示采用第一反馈方式;或者,
将第一控制信令组播发送给多个组播接收端,第一控制信令中携带目标子集合中的目标组播接收端的设备标识。
在另一种可能实现方式中,第一控制信令携带资源指示信息,资源指示信息用于指示供至少一个目标组播接收端发送反馈信息的第一资源。
在另一种可能实现方式中,资源指示信息包括供至少一个目标组播接收端发送反馈信息的第一资源;或者,
资源指示信息包括第一资源与指定资源之间的偏移量,指定资源为供组播发送端发送通信数据的第二资源,或者包括供其他组播接收端发送反馈信息的第三资源。
在另一种可能实现方式中,供不同目标组播接收端发送反馈信息的第一资源正交。
在另一种可能实现方式中,供目标组播接收端发送反馈信息的第一资源,与供其他组播接收端发送反馈信息的第三资源正交。
在另一种可能实现方式中,供多个其他组播接收端发送反馈信息的第三资源相同。
在另一种可能实现方式中,在组播接收设备集合中确定目标子集合,包括:
从组播接收设备集合中,选取与组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至目标子集合。
在另一种可能实现方式中,选取与组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至目标子集合,包括:
接收多个组播接收端中至少一个组播接收端发送的信道质量上报信令,信道质量上报信令携带对应组播接收端与组播发送端之间的信道质量;或者,
分别测量多个组播接收端与组播发送端之间的信道质量;
根据获取的信道质量,选取与组播发送端之间的信道质量低于其他组播接收端或第一预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至目标子集合。
在另一种可能实现方式中,方法还包括:
获取预设协议中预定义的预设数目或第一预设信道质量;或者,
接收基站发送的第二控制信令,第二控制信令携带预设数目,或第二控制信令携带第一预设信道质量。
在另一种可能实现方式中,多个组播接收端中的任一组播接收端用于当与组播发送端之间的信道质量低于第二预设信道质量时,向组播发送端发送信道质量上报信令,信道质量上报信令携带信道质量;
选取与组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至目标子集合,包括:
接收多个组播接收端中至少一个组播接收端发送的信道质量上报信令;
将至少一个组播接收端中不超过预设数目的组播接收端添加至目标子集合。
图3是根据一示例性实施例示出的一种通信反馈方法的流程图,应用于接收端,如图3所示,包括以下步骤:
在步骤301中,默认采用第二反馈方式进行反馈的情况下,接收组播发送端发送的第一控制信令。
在步骤302中,基于第一控制信令,采用第一反馈方式或第二反馈方式进 行反馈。
第一控制信令用于指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,第一反馈方式为当正确接收到组播发送端发送的通信数据时反馈ACK,当未正确接收到组播发送端发送的通信数据时反馈NACK;
第一控制信令还用于指示目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,第二反馈方式为当正确接收到组播发送端发送的通信数据时不反馈,当未正确接收到组播发送端发送的通信数据时反馈NACK。
本公开实施例提供的方法,接收组播发送端发送的第一控制信令,基于第一控制信令,采用第一反馈方式或第二反馈方式进行反馈,从而指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,而其他组播接收端采用第二反馈方式进行反馈。与所有组播接收端均采用第一反馈方式相比,有效地避免了由于未正确接收到SCI而导致通信数据丢失的问题,提高了传输可靠性,而与所有组播接收端均采用第二反馈方式相比,能够降低信令开销,节省反馈资源。
在一种可能实现方式中,基于第一控制信令,采用第一反馈方式或第二反馈方式进行反馈,包括:
当第一控制信令为组播发送端发送的单播信令时,采用第一反馈方式进行反馈。
在另一种可能实现方式中,基于第一控制信令,采用第一反馈方式或第二反馈方式进行反馈,包括:
当第一控制信令为组播发送端发送的组播信令,且第一控制信令携带组播接收端的设备标识时,采用第一反馈方式进行反馈;
当第一控制信令为组播发送端发送的组播信令,且第一控制信令未携带组播接收端的设备标识时,采用第二反馈方式进行反馈。
在另一种可能实现方式中,第一控制信令携带资源指示信息,资源指示信息用于指示供目标组播接收端发送反馈信息的第一资源;采用第一反馈方式进行反馈,包括:
当确定正确接收到组播发送端发送的通信数据时,通过第一资源发送ACK;
当确定未正确接收到组播发送端发送的通信数据时,通过第一资源发送NACK。
在另一种可能实现方式中,资源指示信息包括供目标组播接收端发送反馈信息的第一资源与指定资源之间的偏移量,指定资源为供组播发送端发送通信数据的第二资源,或者包括供其他组播接收端发送反馈信息的第三资源;方法还包括:
在另一种可能实现方式中,根据指定资源及偏移量,确定第一资源。
供不同目标组播接收端发送反馈信息的第一资源正交。
在另一种可能实现方式中,供目标组播接收端发送反馈信息的第一资源,与供其他组播接收端发送反馈信息的第三资源正交。
在另一种可能实现方式中,供多个其他组播接收端发送反馈信息的第三资源相同。
在另一种可能实现方式中,方法还包括:
测量组播接收端与组播发送端之间的信道质量;
向组播发送端发送信道质量上报信令,信道质量上报信令携带信道质量;或者,
当信道质量低于第二预设信道质量时,向组播发送端发送信道质量上报信令,信道质量上报信令携带信道质量。
在另一种可能实现方式中,方法还包括:
接收基站发送的第三控制信令,第三控制信令携带第二预设信道质量;或者,
接收组播发送端发送的第四控制信令,第四控制信令携带第二预设信道质量。
图4是根据一示例性实施例示出的一种通信反馈方法的流程图,应用于组播发送端和组播接收端,如图4所示,包括以下步骤:
在步骤401中,组播发送端根据组播接收设备集合,获取多个组播接收端与组播发送端之间的信道质量。
其中,组播接收设备集合中包括与组播发送端进行组播通信的多个组播接收端。
本公开实施例中,设置有两种反馈方式:
第一反馈方式为:当正确接收到组播发送端发送的通信数据时反馈ACK,当未正确接收到组播发送端发送的通信数据时反馈NACK。
第二反馈方式为:当正确接收到组播发送端发送的通信数据时不反馈,当未正确接收到组播发送端发送的通信数据时反馈NACK。
组播发送端与多个组播接收端进行组播通信时,若多个组播接收端均采用第一反馈方式进行反馈,每个组播接收端均要在正确接收到通信数据时向组播发送端反馈ACK,在未正确接收到通信数据时反馈NACK,会造成较大的信令开销,还需要为每个组播接收端分配不同的资源,供每个组播接收端发送反馈信息,耗费了过多的反馈资源。
若多个组播接收端均采用第二反馈方式进行反馈,当任一组播接收端未正确接收到SCI时,不会向组播发送端反馈任何信息,组播发送端会误认为通信数据传输成功,而不再对通信数据进行重传,导致通信数据丢失,因此传输可靠性较低。
而且考虑到由于组播接收端与组播发送端之间的距离、相对速度、外界环境等因素的不同,组播发送端与不同组播接收端之间的信道质量也不同。组播通信的多个组播接收端对同一个通信数据进行接收时,通信质量取决于信道质量较低的一个或多个组播接收端与组播发送端之间的信道质量。
因此,本公开实施例为多个组播接收端区分配置反馈方式,信道质量较低的组播接收端采用第一反馈方式,信道质量较高的组播接收端采用第二反馈方式。既能够降低信令开销,节省反馈资源,还能够有效避免由于未正确接收到SCI而导致通信数据丢失的问题,提高了传输可靠性。
组播发送端先根据组播接收设备集合,获取多个组播接收端与组播发送端之间的信道质量。在一种可能实现方式中,步骤401包括以下步骤4011-4013中的任一项:
4011、每个组播接收端测量组播接收端与组播发送端之间的信道质量,向组播发送端发送信道质量上报信令,信道质量上报信令携带测量的信道质量。组播发送端接收多个组播接收端发送的信道质量上报信令,从而获取到每个组播接收端的信道质量。
信道质量可以由组播接收端对组播发送端发送的信号进行测量的测量结果确定,信道质量可以由RSRP(Reference Signal Receiving Power,参考信号接收功率)、RSRQ(Reference Signal Receiving Quality,参考信号接收质量)、RSSI(Received Signal Strength Indication,接收信号强度指示)、SINR(Signal to Interference plus Noise Ratio,信号与干扰加噪声比)、数据包接收错误率等测 量结果中的至少一项表示。
对于每个组播接收端来说,在组播发送端向组播接收端发送控制信令、通信数据或其他数据时,组播接收端可以进行测量,得到组播发送端到组播接收端的信道质量,通过向组播发送端信道质量上报信令,将测量的信道质量上报给组播发送端。
另外,信道质量上报信令中还可以携带组播接收端的设备标识,以便组播发送端确定组播接收端的设备标识,根据设备标识对不同的组播接收端加以区分,还可以根据设备标识向组播接收端发送控制信令,为每个组播接收端配置反馈方式。
其中,该设备标识用于确定组播通信中唯一对应的设备,可以为设备的源地址、物理层地址或MAC(Media Access Control,媒体访问控制)层地址。
需要说明的是,组播接收端发送信道质量上报信令的操作可以由组播接收端根据与组播发送端之间的协议自动触发,或者由组播发送端或者基站发送的控制信令触发,即组播发送端或者基站向组播接收端发送上报信令,组播接收端接收到上报信令时,测量信道质量并进行上报。
4012、每个组播接收端测量组播接收端与组播发送端之间的信道质量,当信道质量低于第二预设信道质量时,向组播发送端发送信道质量上报信令,信道质量上报信令携带测量的信道质量,而当信道质量不低于第二预设信道质量时,不再向组播发送端发送信道质量上报信令。组播发送端接收多个组播接收端中至少一个组播接收端发送的信道质量上报信令,从而获取到至少一个组播接收端的信道质量。
由于组播发送端仅需要确定信道质量较低的组播接收端,无需确定所有组播接收端的信道质量,因此为了降低信令开销,组播接收端测量信道质量后,可以先判断该信道质量是否低于第二预设信道质量,只有当信道质量低于第二预设信道质量时,通过向组播发送端信道质量上报信令,将信道质量上报给组播发送端。而当信道质量不低于第二预设信道质量时,不再将信道质量上报给组播发送端。
另外,信道质量上报信令中还可以携带组播接收端的设备标识,以便组播发送端确定组播接收端的设备标识,根据设备标识对不同的组播接收端加以区分,还可以根据设备标识向组播接收端发送控制信令,为每个组播接收端配置反馈方式。
其中,第二预设信道质量可以为预设的RSRP阈值、RSRQ阈值、RSSI阈值、SINR阈值、数据包接收错误率的阈值等。第二预设信道质量可以根据组播发送端与组播接收端之间的协议预定义,或者由组播接收端进行配置,或者由组播发送端或基站进行配置。
需要说明的是,组播接收端发送信道质量上报信令的操作可以由组播接收端根据与组播发送端之间的协议自动触发,或者由组播发送端或者基站发送的控制信令触发,即组播发送端或者基站向组播接收端发送上报信令,组播接收端接收到上报信令时,测量信道质量并进行上报,则第二预设信道质量可以携带在该上报信令中发送给组播接收端。
例如,组播接收端接收基站发送的第三控制信令,第三控制信令携带第二预设信道质量;或者,组播接收端接收组播发送端发送的第四控制信令,第四控制信令携带第二预设信道质量。
在一种可能实现方式中,针对上述多项信道质量,可以分别设置相应的第二预设信道质量,组播接收端测量得到多项信道质量时,判断其中的至少一项信道质量是否低于相应的第二预设信道质量,当至少一项信道质量低于相应的第二预设信道质量时,通过向组播发送端信道质量上报信令,将测量的多项信道质量上报给组播发送端。而当至少一项信道质量不低于第二预设信道质量时,不再将测量的多项信道质量上报给组播发送端。
其中,采用的至少一项信道质量为多项信道质量中的哪几项,可以根据组播发送端与组播接收端之间的协议预定义,或者由组播接收端进行配置,或者由组播发送端或基站进行配置。
4013、组播发送端分别测量多个组播接收端与组播发送端之间的信道质量。
信道质量还可以由组播发送端与组播接收端之间的信道的测量结果确定。在组播接收端通过信道向组播发送端发送信令、通信数据或其他数据时,组播发送端可以进行测量,得到组播接收端到组播发送端的信道的信道质量,并利用信道互易性确定组播发送端到组播接收端的信道质量。通过组播发送端测量信道质量的方式,无需组播接收端上报信道质量,降低了信令开销。
其中,信道互易性是指在相同的频率资源、不同的时间资源上进行传输,时间资源间隔较短的情况下,可以认为传输的信号所经历的信道衰落相同,即信道质量相同。
在步骤402中,组播发送端根据获取的信道质量,从组播接收设备集合中,选取与组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至目标子集合。
本公开实施例中,组播发送端根据每个组播接收端的信道质量,选取信道质量较低且不超过预设数目的至少一个组播接收端,作为目标组播接收端,添加至目标子集合,以使目标子集合内的目标组播接收端的信道质量低于目标子集合之外的其他组播接收端的信道质量。或者,选取信道质量低于预设信道质量且不超过预设数目的至少一个组播接收端,作为目标组播接收端,添加至目标子集合,以使目标子集合内的目标组播接收端的信道质量低于预设信道质量。
在一种可能实现方式中,当组播发送端采用上述步骤4011或4013获取信道质量时,步骤402可以包括以下步骤4021-4023的任一项:
4021、按照多个组播接收端与组播发送端之间的信道质量的顺序,选取预设数目的目标组播接收端,使该预设数目的目标组播接收端与组播发送端之间的信道质量低于其他组播接收端,将该预设数目的目标组播接收端添加至目标子集合。
其中,该预设数目可以由根据组播发送端的协议预定义,或者由组播发送端或基站进行配置。例如,组播发送端获取预设协议中预定义的预设数目,或者组播发送端接收基站发送的第二控制信令,第二控制信令携带预设数目。
另外,在对多个组播接收端与组播发送端之间的信道质量进行排序时,可以按照预定方式进行排序,如按照信道质量从高到低的顺序进行排序、按照信道质量从低到高的顺序进行排序或者按照其他的方式进行排序等。
排序之后,即可按照确定的顺序选取目标组播接收端,使选取的目标组播接收端与组播发送端之间的信道质量,低于未被选取的其他组播接收端与组播发送端之间的信道质量。
4022、根据多个组播接收端与组播发送端之间的信道质量,选取信道质量低于第一预设信道质量的目标组播接收端,添加至目标子集合。
其中,第一预设信道质量可以为预设的RSRP阈值、RSRQ阈值、RSSI阈值、SINR阈值、数据包接收错误率的阈值等。第一预设信道质量可以根据组播发送端的协议预定义,或者由组播发送端或基站进行配置。
例如,组播发送端获取预设协议中预定义的第一预设信道质量;或者,组 播发送端接收基站发送的第二控制信令携带第一预设信道质量。
4023、按照多个组播接收端与组播发送端之间的信道质量的顺序,选取预设数目的组播接收端,从预设数目的组播接收端中选取信道质量低于第一预设信道质量的目标组播接收端,添加至目标子集合。
在另一种可能实现方式中,当组播发送端采用上述步骤4012获取信道质量时,步骤402可以包括以下步骤4024-4027中的任一项:
4024、组播发送端接收多个组播接收端中至少一个组播接收端发送的信道质量上报信令,将至少一个组播接收端添加至目标子集合。
由于至少一个组播接收端所上报的信道质量均低于第二预设信道质量,因此组播发送端不再需要对该至少一个组播接收端测量的信道质量进行判断。
4025、组播发送端接收多个组播接收端中至少一个组播接收端发送的信道质量上报信令,从至少一个组播接收端中选取不超过预设数目的目标组播接收端,将选取的目标组播接收端添加至目标子集合。
组播发送端将预设数目作为目标组播接收端的最大数目,当至少一个组播接收端的数目不超过预设数目时,将至少一个组播接收端均作为目标组播接收端,添加至目标子集合。而当至少一个组播接收端的数目超过预设数目时,从至少一个组播接收端中选取不超过预设数目的目标组播接收端,将选取的目标组播接收端添加至目标子集合。
4026、组播发送端接收多个组播接收端中至少一个组播接收端发送的信道质量上报信令,从至少一个组播接收端中选取信道质量低于第一预设信道质量的目标组播接收端,将选取的目标组播接收端添加至目标子集合。
第一预设信道质量低于第二预设信道质量,至少一个组播接收端所上报的信道质量均低于第二预设信道质量,组播发送端获取到至少一个组播接收端的信道质量时,还可以继续判断该至少一个组播接收端的信道质量是否低于第一预设信道质量,从而将信道质量低于第一预设信道质量的组播接收端作为目标组播接收端,将目标组播接收端添加至目标子集合。
4027、组播发送端接收多个组播接收端中至少一个组播接收端发送的信道质量上报信令,从至少一个组播接收端中选取信道质量低于第一预设信道质量、且不超过预设数目的目标组播接收端,将选取的目标组播接收端添加至目标子集合。
在步骤403中,组播发送端发送第一控制信令。
在步骤404中,组播接收端接收该第一控制信令,基于第一控制信令,采用第一反馈方式或第二反馈方式进行反馈。
第一控制信令用于指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,、还用于指示目标子集合之外的其他组播接收端采用第二反馈方式进行反馈。
每个组播接收端默认采用第二反馈方式,组播发送端发送第一控制信令,可以通知目标组播接收端采用第一反馈方式进行反馈,而其他组播接收端仍采用第二反馈方式进行反馈。
在一种可能实现方式中,步骤403和404可以包括以下步骤4031-4032:
4031、组播发送端分别向目标子集合中的每个目标组播接收端发送第一控制信令,第一控制信令用于指示采用第一反馈方式。此时第一控制信令为组播发送端发送的单播信令,则接收到第一控制信令的目标组播接收端采用第一反馈方式进行反馈。
组播发送端不再向其他组播接收端发送第一控制信令,则其他组播接收端仍然采用默认的第二反馈方式进行反馈。
4032、组播发送端将第一控制信令组播发送给多个组播接收端,第一控制信令中携带目标子集合中的目标组播接收端的设备标识。即第一控制信令为组播发送端发送的组播信令,每个组播接收端均会接收到第一控制信令。
对于每个组播接收端来说,组播接收端接收该第一控制信令,确定该第一控制信令为组播发送端发送的组播信令,则获取第一控制信令中携带的设备标识,判断该第一控制信令是否携带该组播接收端的设备标识。当第一控制信令携带组播接收端的设备标识时,表示该组播接收端为目标组播接收端,采用第一反馈方式进行反馈。当第一控制信令未携带组播接收端的设备标识时,表示该组播接收端不是目标组播接收端,采用第二反馈方式进行反馈。
需要说明的是,本公开实施例中,组播发送端向组播接收端发送的控制信令,包括第一控制信令、第二控制信令等,均可以为直连链路控制信令,如物理层信令、MAC CE(Media Access Control Control Element,媒体访问控制层控制元素)信令或者RRC(Radio Resource Control,无线资源控制)信令等。
在步骤405中,组播发送端向多个组播接收端组播发送通信数据和通信数据关联的SCI。
在步骤406中,每个组播接收端根据通信数据和SCI的接收情况以及确定 的反馈方式进行反馈。
通过上述步骤401-405确定多个组播接收端的反馈方式后,后续的通信过程中,组播发送端向多个组播接收端组播发送通信数据,还会组播发送通信数据关联的SCI,SCI中携带发送通信数据的第二资源。而每个组播接收端可以接收SCI,确定发送通信数据的第二资源,通过该第二资源接收通信数据。
在一种可能实现方式中,组播发送端先发送通信数据,之后再发送SCI,或者组播发送端先发送SCI,再发送通信数据,或者组播发送端并行发送通信数据和SCI。
之后每个组播接收端即可根据通信数据和SCI的接收情况,采用确定的反馈方式进行反馈。该通信反馈包括:
4061、当组播接收端未正确接收到SCI时,不会向组播发送端反馈任何信息。
4062、当组播接收端正确接收到SCI,确定发送通信数据的第二资源,通过该第二资源接收通信数据,并进行反馈。
2-1、目标组播接收端正确接收到该通信数据时,向组播发送端反馈ACK。目标组播接收端未正确接收到该通信数据时,向组播发送端反馈NACK。
2-2、其他组播接收端正确接收到该通信数据时,不反馈任何信息。其他组播接收端未正确接收到该通信数据时,向组播发送端反馈NACK。
组播发送端即可根据组播接收端反馈的信息确定是否进行重传。该重传包括4063-4065中的任一项:
4063、当组播发送端接收到任一组播接收端发送的NACK时,对通信数据进行重传。
在一种可能实现方式中,当组播发送端接收到任一个或多个目标组播接收端发送的NACK,且接收到其他目标组播接收端发送的ACK时,向发送NACK的目标组播接收端发送通信数据,而不再向其他组播接收端或者发送ACK的目标组播接收端发送通信数据,以增加传输效率。而当组播发送端接收到除目标组播接收端以外的任一其他组播接收端发送的NACK时,向多个组播接收端均发送通信数据,如组播发送该通信数据。
4064、当组播发送端未接收到某一目标组播接收端发送的ACK和NACK时,即该目标组播接收端未反馈任何信息,表示该目标组播接收端很可能由于未接收到SCI而导致无法接收到通信数据,此时对通信数据进行重传。
在一种可能实现方式中,组播发送端进行重传时,可以向多个组播接收端组播发送通信数据,或者仅向未反馈任何信息的目标组播接收端发送通信数据,而不再向除该目标组播接收端以外的其他组播接收端或者发送ACK的目标组播接收端发送通信数据,以增加传输效率。
4065、当组播发送端接收到目标子集合中的每个目标组播接收端发送的ACK且未接收到任一组播接收端发送的NACK时,不再对通信数据进行重传。
由于目标组播接收端采用第一反馈方式进行反馈,组播发送端能够根据目标组播接收端及其他组播接收端反馈的信息,识别信令漏检或者数据接收错误等情况,通过对目标组播接收端和其他组播接收端的反馈信息进行区分,能够确定通信过程中发生的多种情况,针对不同的情况针对性地确定是否进行重传,既能够提高传输可靠性,还能够尽可能地降低信令开销,节省通信资源。
本公开实施例提供的方法,在组播接收设备集合中确定目标子集合,目标子集合包括多个组播接收端中至少一个目标组播接收端,发送第一控制信令,从而指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,而其他组播接收端采用第二反馈方式进行反馈。与所有组播接收端均采用第一反馈方式相比,有效地避免了由于未正确接收到SCI而导致通信数据丢失的问题,提高了传输可靠性,而与所有组播接收端均采用第二反馈方式相比,能够降低信令开销,节省反馈资源。
并且,组播接收端测量的信道质量低于第二预设信道质量时,再将信道质量上报给组播发送端,既能够使组播发送端获取信道质量较低的组播接收端的信道质量,还能够降低信令开销。
并且,考虑到上行信道的信道质量可以代表下行信道的信道质量,通过组播发送端测量信道质量的方式获取每个组播接收端与组播发送端之间的信道质量,既可以获取到准确的信道质量,而且无需组播接收端上报信道质量,降低了信令开销。
并且,组播发送端根据目标组播接收端反馈的信息和其他组播接收端反馈的信息确定是否进行重传,通过对目标组播接收端和其他组播接收端的反馈信息进行区分,能够确定通信过程中发生的多种情况,针对不同的情况针对性地确定是否进行重传,既能够提高传输可靠性,还能够尽可能地降低信令开销,节省通信资源。
图5是根据一示例性实施例示出的一种通信反馈方法的流程图,应用于组播发送端和组播接收端,如图5所示,包括以下步骤:
在步骤501中,组播发送端根据组播接收设备集合,获取多个组播接收端与组播发送端之间的信道质量。
在步骤502中,组播发送端从组播接收设备集合中,选取与组播发送端之间的信道质量低于其他组播接收端且不超过预设数目的至少一个目标组播接收端,添加至目标子集合。
步骤501-502与上述步骤401-402类似,在此不再赘述。
在步骤503中,组播发送端发送第一控制信令,第一控制信令携带资源指示信息。
其中,资源指示信息用于指示供至少一个目标组播接收端发送反馈信息的第一资源。该资源指示信息包括但不限于以下5031和5031两种情况:
5031、资源指示信息包括供至少一个目标组播接收端发送反馈信息的第一资源,目标组播接收端根据资源指示信息,可以直接确定发送反馈信息时采用的第一资源。
在一种可能实现方式中,组播发送端可以向每个目标组播接收端单独发送第一控制信令,每个第一控制信令中携带每个目标组播接收端的第一资源。
在另一种可能实现方式中,组播发送端可以向至少一个目标组播接收端组播发送相同的第一控制信令,第一控制信令中携带每个目标组播接收端的第一资源。
例如,第一控制信令中携带每个目标组播接收端的设备标识与第一资源的对应关系,每个目标组播接收端接收到第一控制信令时,根据该对应关系确定本端的设备标识对应的第一资源。
在上述两种可能实现方式中,组播发送端还可以另外向其他组播接收端发送控制信令,控制信令中携带供该其他组播接收端发送反馈信息的第三资源。
在另一种可能实现方式中,组播发送端可以向每个组播接收端组播发送相同的第一控制信令,第一控制信令中携带每个目标组播接收端的第一资源,另外还可以携带其他组播接收端的第三资源。
5032、资源指示信息包括第一资源与指定资源之间的偏移量,指定资源为供组播发送端发送通信数据的第二资源,或者包括供其他组播接收端发送反馈信息的第三资源。
在一种可能实现方式中,资源指示信息包括第一资源与第二资源之间的偏移量,则目标组播接收端接收到第一控制信令时,获取该第一控制信令携带的偏移量,当接收到SCI时,获取SCI携带的第二资源,根据该偏移量和该第二资源即可获取该第一资源。
之后,目标组播接收端即可通过第二资源接收组播发送端发送的通信数据,通过第一资源向组播发送端发送反馈信息。
其中,该偏移量可以包括时间资源偏移量和频率资源偏移量中的至少一项。例如,时间资源偏移量为a,频率资源偏移量为0,则目标组播接收端通过第二资源接收通信数据后,在之后的第a个时间资源、与通信数据相同的频率资源上向组播发送端发送反馈信息。
在另一种可能实现方式中,资源指示信息包括第一资源与第三资源之间的偏移量,则目标组播接收端接收到第一控制信令时,获取该第一控制信令携带的偏移量,根据该偏移量和该第三资源即可获取该第一资源。
其中,第三资源可以由组播发送端在组播发送给多个组播接收端的控制信令中携带,该控制信令可以为上述第一控制信令,也可以为除第一控制信令以外单独发送的另一控制信令。
需要说明的是,上述第一资源、第二资源和第三资源可以由组播发送端任意配置,或者由基站任意配置。每个资源由通信系统中的时域资源、频域资源和/或码域资源确定,时域资源、频域资源和/或码域资源可以根据需求进行配置或更改。例如时域资源可以为时隙、帧、子帧、符号等,频域资源可以为子载波、带宽部分等。
为了便于区分管理多个组播接收端发送反馈信息的资源,可以确定多个组播接收端的排列顺序,按照该排列顺序依次进行资源的偏移,得到每个组播接收端的资源。其中,多个组播接收端的排列顺序可以按照多个组播接收端的信道质量从高到低的顺序或者从低到高的顺序,或者还可以按照多个组播接收端的设备标识的先后顺序,或者还可以按照其他顺序。
组播发送端发送控制信令的方式与上述步骤5031类似,在此不再赘述。则在组播发送端向至少一个目标组播接收端发送相同的第一控制信令时,第一控制信令中可以携带多个偏移量,且该多个偏移量按照多个目标组播接收端的排列顺序排列,相当于提供了每个目标组播接收端与偏移量的对应关系。目标组播接收端接收到第一控制信令时,根据本端的排列顺序确定对应的偏移量, 进而根据偏移量和指定资源确定第一资源。
而为了避免资源之间的相互干扰,在一种可能实现方式中,供不同目标组播接收端发送反馈信息的第一资源正交,以避免不同目标组播接收端反馈的信息相互干扰。
在另一种可能实现方式中,供目标组播接收端发送反馈信息的第一资源,与供其他组播接收端发送反馈信息的第三资源正交,以避免目标组播接收端与其他组播接收端反馈的信息相互干扰。
在另一种可能实现方式中,供多个其他组播接收端发送反馈信息的资源相同,这样可以保证多个其他组播接收端共享资源,只要有一个其他组播接收端通过该资源发送NACK后,即可通知组播发送端无法正确接收到通信数据,其他的组播接收端无需再通过该资源发送NACK。
在步骤504中,组播接收端接收该第一控制信令,基于第一控制信令,采用第一反馈方式或第二反馈方式进行反馈。
在步骤505中,组播发送端通过第二资源,向多个组播接收端组播发送通信数据。
在步骤506中,组播发送端向多个组播接收端组播发送通信数据关联的SCI。
其中,该SCI可以通过组播发送端或者基站配置的任一资源发送,且该SCI携带第二资源。每个组播接收端可以接收SCI,确定发送通信数据的第二资源,通过该第二资源接收通信数据。
在步骤507中,每个组播接收端根据通信数据和SCI的接收情况以及确定的反馈方式进行反馈。
该通信反馈包括:
5071、当组播接收端未正确接收到SCI时,不会向组播发送端反馈任何信息。
5072、当组播接收端正确接收到SCI,通过该第二资源接收通信数据,并进行反馈。
2-1、目标组播接收端正确接收到该通信数据时,通过第一资源向组播发送端反馈ACK。目标组播接收端未正确接收到该通信数据时,通过第一资源向组播发送端反馈NACK。
2-2、其他组播接收端正确接收到该通信数据时,不反馈任何信息。其他 组播接收端未正确接收到该通信数据时,通过第三资源向组播发送端反馈NACK。
在一种可能实现方式中,当多个其他组播接收端共享一个第三资源时,其中一个其他组播接收端未正确接收到该通信数据时,通过第三资源向组播发送端反馈NACK。
组播发送端会检测第一资源,通过第一资源接收目标组播接收端反馈的信息,还会检测第三资源,通过第三资源接收其他组播接收端反馈的信息。根据组播接收端反馈的信息确定是否进行重传。重传过程与上述步骤406中的重传过程类似,在此不再赘述。
本公开实施例提供的方法,在组播接收设备集合中确定目标子集合,目标子集合包括多个组播接收端中至少一个目标组播接收端,发送第一控制信令,从而指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,而其他组播接收端采用第二反馈方式进行反馈。与所有组播接收端均采用第一反馈方式相比,有效地避免了由于未正确接收到SCI而导致通信数据丢失的问题,提高了传输可靠性,而与所有组播接收端均采用第二反馈方式相比,能够降低信令开销,节省反馈资源。
并且,供不同目标组播接收端发送反馈信息的第一资源正交,和/或,供目标组播接收端发送反馈信息的第一资源,与供其他组播接收端发送反馈信息的第三资源正交,能够避免反馈信息之间的相互干扰,提高准确性。
并且,供多个其他组播接收端发送反馈信息的资源相同,由多个其他组播接收端共享资源,既能够实现准确地反馈,而且节省了反馈资源。
图6是根据一示例性实施例示出的一种通信反馈装置的框图,应用于发送端。参见图6,该装置包括:目标确定模块601和发送模块602。
目标确定模块601,用于根据组播接收设备集合确定目标子集合,组播接收设备集合包括接收组播通信的多个组播接收端,目标子集合包括多个组播接收端中至少一个目标组播接收端;
发送模块602,用于发送第一控制信令,第一控制信令用于指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,第一反馈方式为当正确接收到组播发送端发送的通信数据时反馈ACK,当未正确接收到组播发送端发送的通信数据时反馈NACK;
第一控制信令还用于指示目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,第二反馈方式为当正确接收到组播发送端发送的通信数据时不反馈,当未正确接收到组播发送端发送的通信数据时反馈NACK。
本公开实施例提供的装置,在组播接收设备集合中确定目标子集合,目标子集合包括多个组播接收端中至少一个目标组播接收端,发送第一控制信令,从而指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,而其他组播接收端采用第二反馈方式进行反馈。与所有组播接收端均采用第一反馈方式相比,有效地避免了由于未正确接收到SCI而导致通信数据丢失的问题,提高了传输可靠性。而与所有组播接收端均采用第二反馈方式相比,能够降低信令开销,节省反馈资源。
在一种可能实现方式中,发送模块602,包括:
第一发送单元,用于分别向目标子集合中的每个目标组播接收端发送第一控制信令,第一控制信令用于指示采用第一反馈方式;
第二发送单元,用于将第一控制信令组播发送给多个组播接收端,第一控制信令中携带目标子集合中的目标组播接收端的设备标识。
在另一种可能实现方式中,第一控制信令携带资源指示信息,资源指示信息用于指示供至少一个目标组播接收端发送反馈信息的第一资源。
在另一种可能实现方式中,资源指示信息包括供至少一个目标组播接收端发送反馈信息的第一资源;或者,
资源指示信息包括第一资源与指定资源之间的偏移量,指定资源为供组播发送端发送通信数据的第二资源,或者包括供其他组播接收端发送反馈信息的第三资源。
在另一种可能实现方式中,供不同目标组播接收端发送反馈信息的第一资源正交。
在另一种可能实现方式中,供目标组播接收端发送反馈信息的第一资源,与供其他组播接收端发送反馈信息的第三资源正交。
在另一种可能实现方式中,供多个其他组播接收端发送反馈信息的第三资源相同。
在另一种可能实现方式中,目标确定模块601,用于从组播接收设备集合中,选取与组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至目标子集合。
在另一种可能实现方式中,目标确定模块601,包括:
获取单元,用于接收多个组播接收端中至少一个组播接收端发送的信道质量上报信令,信道质量上报信令携带对应组播接收端与组播发送端之间的信道质量;或者,分别测量多个组播接收端与组播发送端之间的信道质量;
目标确定单元,用于根据获取的信道质量,选取与组播发送端之间的信道质量低于其他组播接收端或第一预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至目标子集合。
在另一种可能实现方式中,信道质量获取单元,还用于接收多个组播接收端中至少一个组播接收端发送的信道质量上报信令,信道质量上报信令携带对应组播接收端与组播发送端之间的信道质量;或者,分别测量多个组播接收端与组播发送端之间的信道质量。
在另一种可能实现方式中,装置还包括:
获取模块,用于获取预设协议中预定义的预设数目或第一预设信道质量;
获取模块,还用于接收基站发送的第二控制信令,第二控制信令携带预设数目,或第二控制信令携带第一预设信道质量。
在另一种可能实现方式中,多个组播接收端中的任一组播接收端用于当与组播发送端之间的信道质量低于第二预设信道质量时,向组播发送端发送信道质量上报信令,信道质量上报信令携带信道质量;
目标确定模块601,还包括:
接收单元,用于接收多个组播接收端中至少一个组播接收端发送的信道质量上报信令;
目标确定单元,用于将至少一个组播接收端中不超过预设数目的组播接收端添加至目标子集合。
需要说明的是:上述实施例提供的通信反馈装置在进行反馈时,仅以上述各功能模块的划分进行举例说明,实际应用中,可以根据需要而将上述功能分配由不同的功能模块完成,即将组播发送端的内部结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。另外,上述实施例提供的通信反馈装置与通信反馈方法实施例属于同一构思,其具体实现过程详见方法实施例,这里不再赘述。
图7是根据一示例性实施例示出的一种通信反馈装置的框图,应用于发送 端。参见图7,该装置包括:接收模块701和反馈模块702。
接收模块701,用于默认采用第二反馈方式进行反馈的情况下,接收组播发送端发送的第一控制信令;
反馈模块702,用于基于第一控制信令,采用第一反馈方式或第二反馈方式进行反馈;
第一控制信令用于指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,第一反馈方式为当正确接收到组播发送端发送的通信数据时反馈ACK,当未正确接收到组播发送端发送的通信数据时反馈NACK;
第一控制信令还用于指示目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,第二反馈方式为当正确接收到组播发送端发送的通信数据时不反馈,当未正确接收到组播发送端发送的通信数据时反馈NACK。
本公开实施例提供的装置,在组播接收设备集合中确定目标子集合,目标子集合包括多个组播接收端中至少一个目标组播接收端,发送第一控制信令,从而指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,而其他组播接收端采用第二反馈方式进行反馈。与所有组播接收端均采用第一反馈方式相比,有效地避免了由于未正确接收到SCI而导致通信数据丢失的问题,提高了传输可靠性。而与所有组播接收端均采用第二反馈方式相比,能够降低信令开销,节省反馈资源。
在一种可能实现方式中,反馈模块702,还用于当第一控制信令为组播发送端发送的单播信令时,采用第一反馈方式进行反馈。
在另一种可能实现方式中,反馈模块702,包括:
第一反馈单元,用于当第一控制信令为组播发送端发送的组播信令,且第一控制信令携带组播接收端的设备标识时,采用第一反馈方式进行反馈;
第二反馈单元,用于当第一控制信令为组播发送端发送的组播信令,且第一控制信令未携带组播接收端的设备标识时,采用第二反馈方式进行反馈。
在另一种可能实现方式中,第一控制信令携带资源指示信息,资源指示信息用于指示供目标组播接收端发送反馈信息的第一资源;反馈模块702还包括:
第一发送单元,用于当确定正确接收到组播发送端发送的通信数据时,通过第一资源发送ACK;
第二发送单元,用于当确定未正确接收到组播发送端发送的通信数据时,通过第一资源发送NACK。
在另一种可能实现方式中,资源指示信息包括供目标组播接收端发送反馈信息的第一资源与指定资源之间的偏移量,指定资源为供组播发送端发送通信数据的第二资源,或者包括供其他组播接收端发送反馈信息的第三资源;装置还包括:
确定模块,用于根据指定资源及偏移量,确定第一资源。
在另一种可能实现方式中,供不同目标组播接收端发送反馈信息的第一资源正交。
在另一种可能实现方式中,供目标组播接收端发送反馈信息的第一资源,与供其他组播接收端发送反馈信息的第三资源正交。
在另一种可能实现方式中,供多个其他组播接收端发送反馈信息的第三资源相同。
在另一种可能实现方式中,装置还包括:
测量模块,用于测量组播接收端与组播发送端之间的信道质量;
第三发送模块,用于向组播发送端发送信道质量上报信令,信道质量上报信令携带信道质量;或者,
第四发送模块,用于当信道质量低于第二预设信道质量时,向组播发送端发送信道质量上报信令,信道质量上报信令携带信道质量。
在另一种可能实现方式中,装置还包括:
接收模块,用于接收基站发送的第三控制信令,第三控制信令携带第二预设信道质量;
接收模块,还用于接收组播发送端发送的第四控制信令,第四控制信令携带第二预设信道质量。
需要说明的是:上述实施例提供的通信反馈装置在进行反馈时,仅以上述各功能模块的划分进行举例说明,实际应用中,可以根据需要而将上述功能分配由不同的功能模块完成,即将组播接收端的内部结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。另外,上述实施例提供的通信反馈装置与通信反馈方法实施例属于同一构思,其具体实现过程详见方法实施例,这里不再赘述。
图8是本发明实施例提供的一种通信设备800的结构框图。例如,该通信设备800可以用于执行上述各个实施例中提供的通信反馈方法。参见图8,通 信设备800可以包括以下一个或多个组件:处理组件802,存储器804,电源组件806,多媒体组件808,音频组件810,输入/输出(I/O)的接口812,传感器组件814,以及通信组件816。
处理组件802通常控制通信设备800的整体操作,诸如与显示,电话呼叫,数据通信,相机操作和记录操作相关联的操作。处理组件802可以包括一个或多个处理器820来执行信令,以完成上述的方法的全部或部分步骤。此外,处理组件802可以包括一个或多个模块,便于处理组件802和其他组件之间的交互。例如,处理组件802可以包括多媒体模块,以方便多媒体组件808和处理组件802之间的交互。
存储器804被配置为存储各种类型的数据以支持在通信设备800的操作。这些数据的示例包括用于在通信设备800上操作的任何应用程序或方法的信令,联系人数据,电话簿数据,消息,图片,视频等。存储器804可以由任何类型的易失性或非易失性存储设备或者它们的组合实现,如静态随机存取存储器(SRAM),电可擦除可编程只读存储器(EEPROM),可擦除可编程只读存储器(EPROM),可编程只读存储器(PROM),只读存储器(ROM),磁存储器,快闪存储器,磁盘或光盘。
电源组件806为通信设备800的各种组件提供电力。电源组件806可以包括电源管理系统,一个或多个电源,及其他与为通信设备800生成、管理和分配电力相关联的组件。
多媒体组件808包括在通信设备800和用户之间的提供一个输出接口的屏幕。在一些实施例中,屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板,屏幕可以被实现为触摸屏,以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。触摸传感器可以不仅感测触摸或滑动动作的边界,而且还检测与触摸或滑动操作相关的持续时间和压力。在一些实施例中,多媒体组件808包括一个前置摄像头和/或后置摄像头。当通信设备800处于操作模式,如拍摄模式或视频模式时,前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件810被配置为输出和/或输入音频信号。例如,音频组件810包括一个麦克风(MIC),当通信设备800处于操作模式,如呼叫模式、记录模式 和语音识别模式时,麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器804或经由通信组件816发送。在一些实施例中,音频组件810还包括一个扬声器,用于输出音频信号。
I/O接口812为处理组件802和外围接口模块之间提供接口,上述外围接口模块可以是键盘,点击轮,按钮等。这些按钮可包括但不限于:主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件814包括一个或多个传感器,用于为通信设备800提供各个方面的状态评估。例如,传感器组件814可以检测到通信设备800的打开/关闭状态,组件的相对定位,例如组件为通信设备800的显示器和小键盘,传感器组件814还可以检测通信设备800或通信设备800一个组件的位置改变,用户与通信设备800接触的存在或不存在,通信设备800方位或加速/减速和通信设备800的温度变化。传感器组件814可以包括接近传感器,被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件814还可以包括光传感器,如CMOS或CCD图像传感器,用于在成像应用中使用。在一些实施例中,该传感器组件814还可以包括加速度传感器,陀螺仪传感器,磁传感器,压力传感器或温度传感器。
通信组件816被配置为便于通信设备800和其他设备之间有线或无线方式的通信。通信设备800可以接入基于通信标准的无线网络,如WiFi,2G或3G,或它们的组合。在一个示例性实施例中,通信组件816经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中,通信组件816还包括近场通信(NFC)模块,以促进短程通信。
在示例性实施例中,通信设备800可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现,用于执行上述通信反馈方法。
在示例性实施例中,还提供了一种包括信令的非临时性计算机可读存储介质,例如包括信令的存储器804,上述信令可由通信设备800的处理器820执行以完成上述方法。例如,非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通 过硬件来完成,也可以通过程序来信令相关的硬件完成,所述的程序可以存储于一种获取机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。
以上仅为本公开实施例的一些可选实施例,并不用以限制本公开,凡在本公开实施例的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本公开实施例的保护范围之内。

Claims (38)

  1. 一种通信反馈方法,其特征在于,应用于组播发送端,所述方法包括:
    在组播接收设备集合中确定目标子集合,所述组播接收设备集合包括接收组播通信的多个组播接收端,所述目标子集合包括所述多个组播接收端中至少一个目标组播接收端;
    发送第一控制信令,所述第一控制信令用于指示所述目标子集合中的目标组播接收端采用第一反馈方式进行反馈,所述第一反馈方式为当正确接收到所述组播发送端发送的通信数据时反馈ACK,当未正确接收到所述组播发送端发送的通信数据时反馈NACK;
    所述第一控制信令还用于指示所述目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,所述第二反馈方式为当正确接收到所述组播发送端发送的通信数据时不反馈,当未正确接收到所述组播发送端发送的通信数据时反馈NACK。
  2. 根据权利要求1所述的方法,其特征在于,所述发送第一控制信令,包括:
    分别向所述目标子集合中的每个目标组播接收端发送所述第一控制信令,所述第一控制信令用于指示采用第一反馈方式;或者,
    将所述第一控制信令组播发送给所述多个组播接收端,所述第一控制信令中携带所述目标子集合中的目标组播接收端的设备标识。
  3. 根据权利要求1所述的方法,其特征在于,所述第一控制信令携带资源指示信息,所述资源指示信息用于指示供所述至少一个目标组播接收端发送反馈信息的第一资源。
  4. 根据权利要求3所述的方法,其特征在于,所述资源指示信息包括供所述至少一个目标组播接收端发送反馈信息的第一资源;或者,
    所述资源指示信息包括所述第一资源与指定资源之间的偏移量,所述指定资源为供所述组播发送端发送通信数据的第二资源,或者包括供所述其他组播接收端发送反馈信息的第三资源。
  5. 根据权利要求3或4所述的方法,其特征在于,供不同目标组播接收端发送反馈信息的第一资源正交;和/或,
    供所述目标组播接收端发送反馈信息的第一资源,与供所述其他组播接收端发送反馈信息的第三资源正交;和/或,
    供多个其他组播接收端发送反馈信息的第三资源相同。
  6. 根据权利要求1所述的方法,其特征在于,所述在组播接收设备集合中确定目标子集合,包括:
    从所述组播接收设备集合中,选取与所述组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至所述目标子集合。
  7. 根据权利要求6所述的方法,其特征在于,所述选取与所述组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至所述目标子集合,包括:
    接收所述多个组播接收端中至少一个组播接收端发送的信道质量上报信令,所述信道质量上报信令携带对应组播接收端与所述组播发送端之间的信道质量;或者,
    分别测量所述多个组播接收端与所述组播发送端之间的信道质量;
    根据获取的信道质量,选取与所述组播发送端之间的信道质量低于其他组播接收端或第一预设信道质量且不超过所述预设数目的至少一个目标组播接收端,添加至所述目标子集合。
  8. 根据权利要求7所述的方法,其特征在于,所述方法还包括:
    获取预设协议中预定义的所述预设数目或所述第一预设信道质量;或者,
    接收基站发送的第二控制信令,所述第二控制信令携带所述预设数目,或所述第二控制信令携带所述第一预设信道质量。
  9. 根据权利要求6所述的方法,其特征在于,所述多个组播接收端中的任一组播接收端用于当与所述组播发送端之间的信道质量低于第二预设信道质量时,向所述组播发送端发送信道质量上报信令,所述信道质量上报信令携带所 述信道质量;
    所述选取与所述组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至所述目标子集合,包括:
    接收所述多个组播接收端中至少一个组播接收端发送的信道质量上报信令;
    将所述至少一个组播接收端中不超过所述预设数目的组播接收端添加至所述目标子集合。
  10. 一种通信反馈方法,其特征在于,应用于组播接收端,所述方法包括:
    默认采用第二反馈方式进行反馈的情况下,接收组播发送端发送的第一控制信令;
    基于所述第一控制信令,采用第一反馈方式或第二反馈方式进行反馈;
    所述第一控制信令用于指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,所述第一反馈方式为当正确接收到所述组播发送端发送的通信数据时反馈ACK,当未正确接收到所述组播发送端发送的通信数据时反馈NACK;
    所述第一控制信令还用于指示所述目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,所述第二反馈方式为当正确接收到所述组播发送端发送的通信数据时不反馈,当未正确接收到所述组播发送端发送的通信数据时反馈NACK。
  11. 根据权利要求10所述的方法,其特征在于,所述基于所述第一控制信令,采用第一反馈方式或第二反馈方式进行反馈,包括:
    当所述第一控制信令为所述组播发送端发送的单播信令时,采用所述第一反馈方式进行反馈。
  12. 根据权利要求10所述的方法,其特征在于,所述基于所述第一控制信令,采用第一反馈方式或第二反馈方式进行反馈,包括:
    当所述第一控制信令为所述组播发送端发送的组播信令,且所述第一控制信令携带所述组播接收端的设备标识时,采用所述第一反馈方式进行反馈;
    当所述第一控制信令为所述组播发送端发送的组播信令,且所述第一控制信令未携带所述组播接收端的设备标识时,采用所述第二反馈方式进行反馈。
  13. 根据权利要求10所述的方法,其特征在于,所述第一控制信令携带资源指示信息,所述资源指示信息用于指示供目标组播接收端发送反馈信息的第一资源;所述采用第一反馈方式进行反馈,包括:
    当确定正确接收到所述组播发送端发送的通信数据时,通过所述第一资源发送所述ACK;
    当确定未正确接收到所述组播发送端发送的通信数据时,通过所述第一资源发送所述NACK。
  14. 根据权利要求13所述的方法,其特征在于,所述资源指示信息包括供所述目标组播接收端发送反馈信息的第一资源与指定资源之间的偏移量,所述指定资源为供所述组播发送端发送通信数据的第二资源,或者包括供其他组播接收端发送反馈信息的第三资源;所述方法还包括:
    根据所述指定资源及所述偏移量,确定所述第一资源。
  15. 根据权利要求10-14任一项所述的方法,其特征在于,供不同目标组播接收端发送反馈信息的第一资源正交;和/或,
    供所述目标组播接收端发送反馈信息的第一资源,与供所述其他组播接收端发送反馈信息的第三资源正交;和/或,
    供多个其他组播接收端发送反馈信息的第三资源相同。
  16. 根据权利要求10所述的方法,其特征在于,所述方法还包括:
    测量所述组播接收端与所述组播发送端之间的信道质量;
    向所述组播发送端发送信道质量上报信令,所述信道质量上报信令携带所述信道质量;或者,
    当所述信道质量低于第二预设信道质量时,向所述组播发送端发送信道质量上报信令,所述信道质量上报信令携带所述信道质量。
  17. 根据权利要求16所述的方法,其特征在于,所述方法还包括:
    接收基站发送的第三控制信令,所述第三控制信令携带所述第二预设信道质量;或者,
    接收所述组播发送端发送的第四控制信令,所述第四控制信令携带所述第二预设信道质量。
  18. 一种通信反馈装置,其特征在于,应用于组播发送端,所述装置包括:
    目标确定模块,用于在组播接收设备集合中确定目标子集合,所述组播接收设备集合包括接收组播通信的多个组播接收端,所述目标子集合包括所述多个组播接收端中至少一个目标组播接收端;
    发送模块,用于发送第一控制信令,所述第一控制信令用于指示所述目标子集合中的目标组播接收端采用第一反馈方式进行反馈,所述第一反馈方式为当正确接收到所述组播发送端发送的通信数据时反馈ACK,当未正确接收到所述组播发送端发送的通信数据时反馈NACK;
    所述第一控制信令还用于指示所述目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,所述第二反馈方式为当正确接收到所述组播发送端发送的通信数据时不反馈,当未正确接收到所述组播发送端发送的通信数据时反馈NACK。
  19. 根据权利要求18所述的装置,其特征在于,所述发送模块,包括:
    第一发送单元,用于分别向所述目标子集合中的每个目标组播接收端发送所述第一控制信令,所述第一控制信令用于指示采用第一反馈方式;
    第二发送单元,用于将所述第一控制信令组播发送给所述多个组播接收端,所述第一控制信令中携带所述目标子集合中的目标组播接收端的设备标识。
  20. 根据权利要求18所述的装置,其特征在于,所述第一控制信令携带资源指示信息,所述资源指示信息用于指示供所述至少一个目标组播接收端发送反馈信息的第一资源。
  21. 根据权利要求20所述的装置,其特征在于,所述资源指示信息包括供所述至少一个目标组播接收端发送反馈信息的第一资源;或者,
    所述资源指示信息包括所述第一资源与指定资源之间的偏移量,所述指定 资源为供所述组播发送端发送通信数据的第二资源,或者包括供所述其他组播接收端发送反馈信息的第三资源。
  22. 根据权利要求20或21所述的装置,其特征在于,供不同目标组播接收端发送反馈信息的第一资源正交;和/或,
    供所述目标组播接收端发送反馈信息的第一资源,与供所述其他组播接收端发送反馈信息的第三资源正交;和/或,
    供多个其他组播接收端发送反馈信息的第三资源相同。
  23. 根据权利要求18所述的装置,其特征在于,所述目标确定模块,用于从所述组播接收设备集合中,选取与所述组播发送端之间的信道质量低于其他组播接收端或预设信道质量且不超过预设数目的至少一个目标组播接收端,添加至所述目标子集合。
  24. 根据权利要求23所述的装置,其特征在于,所述目标确定模块,包括:
    获取单元,用于接收所述多个组播接收端中至少一个组播接收端发送的信道质量上报信令,所述信道质量上报信令携带对应组播接收端与所述组播发送端之间的信道质量;或者,分别测量所述多个组播接收端与所述组播发送端之间的信道质量;
    目标确定单元,用于根据获取的信道质量,选取与所述组播发送端之间的信道质量低于其他组播接收端或第一预设信道质量且不超过所述预设数目的至少一个目标组播接收端,添加至所述目标子集合。
  25. 根据权利要求24所述的装置,其特征在于,所述装置还包括:
    获取模块,用于获取预设协议中预定义的所述预设数目或所述第一预设信道质量;
    所述获取模块,还用于接收基站发送的第二控制信令,所述第二控制信令携带所述预设数目,或所述第二控制信令携带所述第一预设信道质量。
  26. 根据权利要求23所述的装置,其特征在于,所述多个组播接收端中的任一组播接收端用于当与所述组播发送端之间的信道质量低于第二预设信道质 量时,向所述组播发送端发送信道质量上报信令,所述信道质量上报信令携带所述信道质量;
    所述目标确定模块,还包括:
    接收单元,用于接收所述多个组播接收端中至少一个组播接收端发送的信道质量上报信令;
    目标确定单元,用于将所述至少一个组播接收端中不超过所述预设数目的组播接收端添加至所述目标子集合。
  27. 一种通信反馈装置,其特征在于,应用于组播接收端,所述装置包括:
    接收模块,用于默认采用第二反馈方式进行反馈的情况下,接收组播发送端发送的第一控制信令;
    反馈模块,用于基于所述第一控制信令,采用第一反馈方式或第二反馈方式进行反馈;
    所述第一控制信令用于指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,所述第一反馈方式为当正确接收到所述组播发送端发送的通信数据时反馈ACK,当未正确接收到所述组播发送端发送的通信数据时反馈NACK;
    所述第一控制信令还用于指示所述目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,所述第二反馈方式为当正确接收到所述组播发送端发送的通信数据时不反馈,当未正确接收到所述组播发送端发送的通信数据时反馈NACK。
  28. 根据权利要求27所述的装置,其特征在于,所述反馈模块,还用于当所述第一控制信令为所述组播发送端发送的单播信令时,采用所述第一反馈方式进行反馈。
  29. 根据权利要求27所述的装置,其特征在于,所述反馈模块,包括:
    第一反馈单元,用于当所述第一控制信令为所述组播发送端发送的组播信令,且所述第一控制信令携带所述组播接收端的设备标识时,采用所述第一反馈方式进行反馈;
    第二反馈单元,用于当所述第一控制信令为所述组播发送端发送的组播信 令,且所述第一控制信令未携带所述组播接收端的设备标识时,采用所述第二反馈方式进行反馈。
  30. 根据权利要求27所述的装置,其特征在于,所述第一控制信令携带资源指示信息,所述资源指示信息用于指示供目标组播接收端发送反馈信息的第一资源;所述反馈模块还包括:
    第一发送单元,用于当确定正确接收到所述组播发送端发送的通信数据时,通过所述第一资源发送所述ACK;
    第二发送单元,用于当确定未正确接收到所述组播发送端发送的通信数据时,通过所述第一资源发送所述NACK。
  31. 根据权利要求30所述的装置,其特征在于,所述资源指示信息包括供所述目标组播接收端发送反馈信息的第一资源与指定资源之间的偏移量,所述指定资源为供所述组播发送端发送通信数据的第二资源,或者包括供其他组播接收端发送反馈信息的第三资源;所述装置还包括:
    确定模块,用于根据所述指定资源及所述偏移量,确定所述第一资源。
  32. 根据权利要求27-31任一项所述的装置,其特征在于,供不同目标组播接收端发送反馈信息的第一资源正交;和/或,
    供所述目标组播接收端发送反馈信息的第一资源,与供所述其他组播接收端发送反馈信息的第三资源正交;和/或,
    供多个其他组播接收端发送反馈信息的第三资源相同。
  33. 根据权利要求27所述的装置,其特征在于,所述装置还包括:
    测量模块,用于测量所述组播接收端与所述组播发送端之间的信道质量;
    第三发送模块,用于向所述组播发送端发送信道质量上报信令,所述信道质量上报信令携带所述信道质量;或者,
    第四发送模块,用于当所述信道质量低于第二预设信道质量时,向所述组播发送端发送信道质量上报信令,所述信道质量上报信令携带所述信道质量。
  34. 根据权利要求33所述的装置,其特征在于,所述装置还包括:
    接收模块,用于接收基站发送的第三控制信令,所述第三控制信令携带所述第二预设信道质量;
    所述接收模块,还用于接收所述组播发送端发送的第四控制信令,所述第四控制信令携带所述第二预设信道质量。
  35. 一种组播发送端,其特征在于,所述组播发送端包括:
    处理器;
    用于存储处理器可执行信令的存储器;
    其中,所述处理器被配置为:
    在组播接收设备集合中确定目标子集合,所述组播接收设备集合包括接收组播通信的多个组播接收端,所述目标子集合包括所述多个组播接收端中至少一个目标组播接收端;
    发送第一控制信令,所述第一控制信令用于指示所述目标子集合中的目标组播接收端采用第一反馈方式进行反馈,所述第一反馈方式为当正确接收到所述组播发送端发送的通信数据时反馈ACK,当未正确接收到所述组播发送端发送的通信数据时反馈NACK;
    所述第一控制信令还用于指示所述目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,所述第二反馈方式为当正确接收到所述组播发送端发送的通信数据时不反馈,当未正确接收到所述组播发送端发送的通信数据时反馈NACK。
  36. 一种组播接收端,其特征在于,所述组播接收端包括:
    处理器;
    用于存储处理器可执行信令的存储器;
    其中,所述处理器被配置为:
    默认采用第二反馈方式进行反馈的情况下,接收组播发送端发送的第一控制信令;
    基于所述第一控制信令,采用第一反馈方式或第二反馈方式进行反馈;
    所述第一控制信令用于指示目标子集合中的目标组播接收端采用第一反馈方式进行反馈,所述第一反馈方式为当正确接收到所述组播发送端发送的通信数据时反馈ACK,当未正确接收到所述组播发送端发送的通信数据时反馈 NACK;
    所述第一控制信令还用于指示所述目标子集合之外的其他组播接收端采用第二反馈方式进行反馈,所述第二反馈方式为当正确接收到所述组播发送端发送的通信数据时不反馈,当未正确接收到所述组播发送端发送的通信数据时反馈NACK。
  37. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有至少一条信令,所述信令由处理器加载并执行以实现如权利要求1至9任一权利要求所述的通信反馈方法中所执行的操作。
  38. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有至少一条信令,所述信令由处理器加载并执行以实现如权利要求10至17任一权利要求所述的通信反馈方法中所执行的操作。
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