WO2019219017A1 - Procédé et dispositif pour renvoyer des informations et déterminer une réception d'informations au moyen d'une rétroaction - Google Patents

Procédé et dispositif pour renvoyer des informations et déterminer une réception d'informations au moyen d'une rétroaction Download PDF

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Publication number
WO2019219017A1
WO2019219017A1 PCT/CN2019/086916 CN2019086916W WO2019219017A1 WO 2019219017 A1 WO2019219017 A1 WO 2019219017A1 CN 2019086916 W CN2019086916 W CN 2019086916W WO 2019219017 A1 WO2019219017 A1 WO 2019219017A1
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Prior art keywords
feedback
resource
information
received
interface
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PCT/CN2019/086916
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English (en)
Chinese (zh)
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冯媛
彭莹
赵锐
郑石磊
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电信科学技术研究院有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a method and device for feeding back information and determining information reception through feedback.
  • LTE Long Term Evolution
  • V2X Vehicle to Everything
  • UE User Equipment
  • PC5 interface also referred to herein as a straight-through link, described as Sidelink on the protocol
  • SPS sensing-based semi-persistent scheduling
  • the existing LTE V2X technology is mainly for broadcast security services without any adaptive mechanism.
  • some adaptations can be considered, such as adaptive transmission and modulation coding (Modulation and Coding Scheme, MCS).
  • MCS Modulation and Coding Scheme
  • Adaptive, etc. to improve system capacity and improve system reliability, we need to consider the corresponding feedback mechanism.
  • the existing SPS mechanism Even for broadcast, the existing SPS mechanism still has the risk of continuous collision, and the feedback mechanism can also reduce the probability of continuous collision. .
  • the present application provides a method and a device for feeding back information and receiving information through feedback to solve the problem that the information sent on the PC 5 port has no feedback.
  • a method for feeding back information including:
  • Feedback is based on the information received.
  • an optional implementation manner is: performing the feedback according to the information receiving situation, including:
  • the feedback resources corresponding to the resources of the information received by the PC5 interface are not one-to-one corresponding dedicated resources, and are fed back by broadcast and/or multicast by using pulse energy;
  • the feedback resources corresponding to the resources of the information received on the PC5 interface are one-to-one corresponding dedicated resources, and are fed back by unicast and/or multicast in a signal manner.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is not a one-to-one dedicated resource:
  • feedback is performed in a frame reserved with a feedback resource corresponding to the frame in which the received message is located.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is not a one-to-one dedicated resource:
  • Feedback is performed after each feedback or each TB defines a feedback resource, wherein when feedback is made for each transmission, a feedback channel is selected for each transmission, and feedback is performed; when feedback is performed for each TB, the TB corresponding is selected.
  • the feedback channel provides corresponding feedback for all transmissions of the TB.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is not a one-to-one dedicated resource:
  • positive feedback is sent or negative feedback is sent; in the broadcast mode, negative feedback is sent; where positive feedback is feedback after receiving the information correctly, and negative feedback is performed after the information is not correctly received or not received. feedback of.
  • an optional implementation manner further includes:
  • the energy control is performed when negative or positive feedback is sent, so that the feedback information sent by the feedback senders of different distances by the feedback arrives at the received power of the respondent is consistent.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is not a one-to-one dedicated resource:
  • feedback is provided on the information of the resource that exceeds the RSRP resource exclusion threshold.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is a dedicated resource corresponding to one-to-one:
  • Feedback is provided according to the resources pre-configured by the system.
  • unicast the connected users are fed back through the connected resources.
  • multicast feedback is provided for the different feedback terminals through corresponding resources.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is a dedicated resource corresponding to one-to-one:
  • Feedback is performed using a channel frame structure of a self-contained structure; wherein predetermined symbols in the frame structure are left for feedback, or a half-symbol or a specific number of REs in the time domain are left to feedback; and/or,
  • Feedback is performed using a channel frame structure that is not self-contained; wherein, feedback is made for each TB in a preset time domain and/or frequency domain.
  • an optional implementation manner is: performing feedback on each TB in a preset time domain and/or frequency domain, including:
  • the preset time domain is a time domain resource with a fixed time interval
  • the preset frequency domain is one or more PRBs fixed in a frequency domain location.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is a dedicated resource corresponding to one-to-one:
  • Feedback is performed after each feedback or each TB defines a feedback resource, wherein when feedback is made for each transmission, a feedback channel is selected for each transmission, and feedback is performed; when feedback is performed for each TB, the TB corresponding is selected.
  • the feedback channel provides corresponding feedback for all transmissions of the TB.
  • a method for determining information reception by feedback including:
  • the information reception status is determined based on the feedback.
  • an optional implementation manner is that the feedback resource corresponding to the resource that is sent by the information on the PC5 interface is not a one-to-one dedicated resource, and the feedback is performed by using a pulse energy method by using broadcast and/or multicast;
  • the feedback resources corresponding to the resources on which the information sent by the PC5 interface is located are not one-to-one corresponding dedicated resources, and the feedback is fed back by unicast and/or multicast in a signal manner.
  • an optional implementation manner is: when the feedback resource corresponding to the resource where the information sent by the PC5 interface is located is not a one-to-one dedicated resource:
  • feedback is performed in a frame reserved with a feedback resource corresponding to the frame in which the message is sent.
  • an optional implementation manner is: when the feedback is performed by using the broadcast, the feedback is performed by the information receiving end according to the sum of the MAC ID of the terminal that performs feedback and the number of REs of the PSSCH corresponding to the received TB.
  • the modulo operation determines the RE of the feedback, or randomly selects an RE for feedback.
  • an optional implementation manner is: when the feedback resource corresponding to the resource where the information sent by the PC5 interface is located is not a one-to-one dedicated resource:
  • the negative feedback In the multicast mode, according to the received positive feedback/negative feedback, it is determined that the negative feedback accounts for all the proportions to be fed back; for the broadcast mode, the negative feedback is received; wherein the positive feedback is the feedback after the correct reception of the information, and the negative feedback Is feedback that is not received correctly or that has not been received;
  • the final feedback result is determined according to the proportion of negative feedback in the multicast mode to all the feedbacks to be fed back or the number of negative feedbacks in the broadcast mode.
  • an optional implementation manner further includes:
  • the number of users who determine positive feedback or negative feedback by the amount of energy is the number of users who determine positive feedback or negative feedback by the amount of energy.
  • the method further includes:
  • the feedback is for one transmission and is not SPS, if the delay is not exceeded, and the maximum number of transmissions is not exceeded, and no ACK is received, the service is retransmitted; otherwise, the cache is released; and/or,
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the information on the PC5 interface is a one-to-one corresponding dedicated resource, the method further includes:
  • the feedback is for one transmission and is not SPS, if the delay is not exceeded, the maximum number of transmissions is not exceeded, and no ACK is received, the feedback is continuously sent; otherwise, the cache is released; and/or,
  • a communications device including:
  • a processor for reading a program in the memory performing the following process:
  • a transceiver for receiving and transmitting data under the control of a processor, performing the following processes:
  • Feedback is based on the information received.
  • an optional implementation manner is: when the feedback is performed according to the information receiving situation, the transceiver is specifically configured to:
  • the feedback resources corresponding to the resources of the information received by the PC5 interface are not one-to-one corresponding dedicated resources, and are fed back by broadcast and/or multicast by using pulse energy;
  • the feedback resources corresponding to the resources of the information received on the PC5 interface are one-to-one corresponding dedicated resources, and are fed back by unicast and/or multicast in a signal manner.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is not a one-to-one dedicated resource:
  • feedback is performed in a frame reserved with a feedback resource corresponding to the frame in which the received message is located.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is not a one-to-one dedicated resource:
  • Feedback is performed after each feedback or each TB defines a feedback resource, wherein when feedback is made for each transmission, a feedback channel is selected for each transmission, and feedback is performed; when feedback is performed for each TB, the TB corresponding is selected.
  • the feedback channel provides corresponding feedback for all transmissions of the TB.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is not a one-to-one dedicated resource:
  • positive feedback is sent or negative feedback is sent; in the broadcast mode, negative feedback is sent; where positive feedback is feedback after receiving the information correctly, and negative feedback is performed after the information is not correctly received or not received. feedback of.
  • an optional implementation manner further includes:
  • the energy control is performed when negative or positive feedback is sent, so that the feedback information sent by the feedback senders of different distances by the feedback arrives at the received power of the respondent is consistent.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is not a dedicated resource:
  • feedback is provided on the information of the resource that exceeds the RSRP resource exclusion threshold.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is a dedicated resource corresponding to one-to-one:
  • Feedback is provided according to the resources pre-configured by the system.
  • unicast the connected users are fed back through the connected resources.
  • multicast feedback is provided for the different feedback terminals through corresponding resources.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is a dedicated resource corresponding to one-to-one:
  • Feedback is performed using a channel frame structure of a self-contained structure; wherein predetermined symbols in the frame structure are left for feedback, or a half-symbol or a specific number of REs in the time domain are left to feedback; and/or,
  • Feedback is performed using a channel frame structure that is not self-contained; wherein, feedback is made for each TB in a preset time domain and/or frequency domain.
  • an optional implementation manner is: performing feedback on each TB in a preset time domain and/or frequency domain, including:
  • the preset time domain is a time domain resource with a fixed time interval
  • the preset frequency domain is one or more PRBs fixed in a frequency domain location.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is a dedicated resource corresponding to one-to-one:
  • Feedback is performed after each feedback or each TB defines a feedback resource, wherein when feedback is made for each transmission, a feedback channel is selected for each transmission, and feedback is performed; when feedback is performed for each TB, the TB corresponding is selected.
  • the feedback channel provides corresponding feedback for all transmissions of the TB.
  • a communications device including:
  • a processor for reading a program in the memory performing the following process:
  • a transceiver for receiving and transmitting data under the control of a processor, performing the following processes:
  • the information reception status is determined based on the feedback.
  • an optional implementation manner is that the feedback resource corresponding to the resource that is sent by the information on the PC5 interface is not a one-to-one dedicated resource, and the feedback is performed by using a pulse energy method by using broadcast and/or multicast;
  • the feedback resources corresponding to the resources on which the information sent by the PC5 interface is located are not one-to-one corresponding dedicated resources, and the feedback is fed back by unicast and/or multicast in a signal manner.
  • an optional implementation manner is: when the feedback resource corresponding to the resource where the information sent by the PC5 interface is located is not a one-to-one dedicated resource:
  • feedback is performed in a frame reserved with a feedback resource corresponding to the frame in which the message is sent.
  • an optional implementation manner is: when the feedback is performed by using the broadcast, the feedback is performed by the information receiving end according to the sum of the MAC ID of the terminal that performs feedback and the number of REs of the PSSCH corresponding to the received TB.
  • the modulo operation determines the RE of the feedback, or randomly selects an RE for feedback.
  • an optional implementation manner is: when the feedback resource corresponding to the resource where the information sent by the PC5 interface is located is not a one-to-one dedicated resource:
  • the negative feedback In the multicast mode, according to the received positive feedback/negative feedback, it is determined that the negative feedback accounts for all the proportions to be fed back; for the broadcast mode, the negative feedback is received; wherein the positive feedback is the feedback after the correct reception of the information, and the negative feedback Is feedback that is not received correctly or that has not been received;
  • the final feedback result is determined according to the proportion of negative feedback in the multicast mode to all the feedbacks to be fed back or the number of negative feedbacks in the broadcast mode.
  • an optional implementation manner further includes:
  • the number of users who determine positive feedback or negative feedback by the amount of energy is the number of users who determine positive feedback or negative feedback by the amount of energy.
  • an optional implementation manner is: when the feedback resource corresponding to the resource where the information sent by the PC5 interface is located is not a dedicated resource, the method further includes:
  • the feedback is for one transmission and is not SPS, if the delay is not exceeded, and the maximum number of transmissions is not exceeded, and no ACK is received, the service is retransmitted; otherwise, the cache is released; and/or,
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the information on the PC5 interface is a one-to-one corresponding dedicated resource, the method further includes:
  • the feedback is for one transmission and is not SPS, if the delay is not exceeded, the maximum number of transmissions is not exceeded, and no ACK is received, the feedback is continuously sent; otherwise, the cache is released; and/or,
  • an apparatus for feeding back information including:
  • a receiving module configured to receive information on the PC5 interface
  • a feedback module for feedback based on information reception.
  • an apparatus for determining information reception by feedback including:
  • a sending module configured to send information on the PC5 interface
  • a determining module for determining information reception based on the feedback.
  • the embodiment of the present application provides a computer readable non-volatile storage medium, where the computer program is stored, and when the computer program is executed by a processor, the method of any one of the foregoing first aspects is implemented.
  • FIG. 1 is a schematic flowchart of a method for implementing feedback on receiving information on a feedback end according to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a method for implementing a method for receiving information by feedback on a feedback end according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a self-contained structure in TDD in the embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a communication device as an information sending end according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a communication device as an information receiving end in the embodiment of the present application.
  • the information sending end refers to the end that receives the feedback after transmitting the information, and the corresponding one in the implementation is called the feedback end/transmitting end, and the information receiving end is It refers to the end that sends the feedback after receiving the information, and the corresponding one is called the feedback end/receiver end in the implementation, and then the examples of the two are implemented together to better understand the implementation of the solution given in the embodiment of the present application.
  • Such a description does not mean that the two must cooperate with the implementation, or must be implemented separately.
  • the information transmitting end and the information receiving end are implemented separately, they also solve the problems of the information transmitting end and the information receiving end, respectively. When combined, you get better technical results.
  • the scheme provided at the information receiving end is as follows:
  • FIG. 1 is a schematic flowchart of a method for performing feedback on receiving information on a feedback end, as shown in the figure, including:
  • Step 101 Receive information on a PC5 interface.
  • Step 102 Perform feedback according to the information receiving situation.
  • FIG. 2 is a schematic flowchart of a method for implementing information reception by feedback on a feedback end, as shown in the figure, including:
  • Step 201 Send information on the PC5 interface.
  • Step 202 Determine information receiving status according to the feedback.
  • the feedback terminal is also allocated a dedicated resource; that is, each resource can know the feedback vehicle, and the feedback can be sent by different signals.
  • the manner of sending feedback can be as follows:
  • the feedback end allocates dedicated resources, that is, the feedback end and the feedback resource have certain mapping resources, and the feedback can adopt different signal transmission methods. For unicast, it is necessary to know clearly whether each feedback feedback is positive feedback or negative feedback, so this method can be used.
  • the dedicated resource is allocated to the feedback end, that is, the feedback end and the feedback resource have a certain mapping resource, and the feedback may adopt a different signal transmission manner.
  • Broadcast There is no dedicated resource on the feedback side, and the feedback uses pulse energy. For broadcasts, there are too many feedback ends, and it is too expensive to allocate dedicated resources for each one. Therefore, this method can be adopted.
  • the self-contained structure is proposed in the NR.
  • the self-contained structure is in a sub-frame, the data is returned from the source to the end, and then from the end, that is, bidirectional transmission; at least in the NR Four symbols: DL control (downlink control), DATA (data), GAP (gap), and UL control (uplink control).
  • DL control downlink control
  • DATA data
  • GAP GAP
  • UL control uplink control
  • Manner 1 The feedback resources corresponding to the resources that are received by the information on the PC5 interface are not one-to-one dedicated resources, and are fed back by broadcast and/or multicast using pulse energy.
  • Manner 2 The feedback resources corresponding to the resources received by the information on the PC5 interface are one-to-one corresponding dedicated resources, and are fed back by unicast and/or multicast in a signal manner.
  • the dedicated resources are not allocated to the feedback end.
  • the implementation method applicable to the feedback end may be: for the energy mode, the pulse is sent, and the sender is not required to be indicated. .
  • the feedback resource corresponding to the resource that is received by the information on the PC5 interface is not a one-to-one corresponding dedicated resource:
  • the last symbol before the GP in the frame structure in the frame in which the message is received is left for feedback, or the last half symbol in the time domain or a specific number of REs in the frame structure is left for feedback.
  • a non-self-contained structure may be adopted, and in this manner, the system has a mapping manner.
  • the feedback is performed in the frame with the feedback resource corresponding to the frame where the received message is located according to the preset mapping manner.
  • the feedback is performed in the frame with the latest reserved feedback resource according to the preset mapping manner.
  • the end that accepts feedback can be implemented as follows:
  • mapping method when the non-self-contained structure is adopted.
  • the feedback is performed in the frame with the feedback resource corresponding to the frame where the message is sent according to the preset mapping mode.
  • the feedback is performed in the frame with the latest reserved feedback resource according to the preset mapping manner.
  • the corresponding RE/RE group that performs feedback is determined according to the relative number of each RE in the RE set for feedback and the ID number in the group, or randomly selected.
  • the RE for feedback is determined according to the relative number of each of the REs in the RE set for feedback, or one RE is randomly selected for feedback.
  • the end that accepts feedback can be implemented as follows:
  • the feedback is that the information receiving end determines the corresponding RE of the terminal that performs the feedback according to the relative number of the received RE and the in-group ID number of the terminal that performs the feedback, or randomly selects one.
  • RE for feedback
  • the feedback is performed by the broadcast, the feedback is performed by the information receiving end according to the sum of the media access control (MAC) ID of the terminal that performs feedback and the number of REs occupied by the PSSCH corresponding to the received TB.
  • MAC media access control
  • a similar self-contained structure can be employed; feedback for each transmission.
  • PSSCH physical side shared channel
  • Guard PeriodGP The last symbol before the guard time slot (Guard PeriodGP,) is reserved for feedback. Further, it may be considered that the last half symbol in the time domain or a specific resource element (RE) is left for feedback.
  • the RE corresponding to the RE For a multicast UE, it is possible to determine the RE corresponding to the RE based on the RE relative number and its own intra-group ID number for feedback. It is also possible to randomly select an RE for feedback.
  • one RE may be randomly selected, or the feedback RE may be determined according to the sum of the number of REs occupied by the own MAC ID and the PSSCH corresponding to the TB.
  • the feedback resource corresponding to the resource that is received by the information on the PC5 interface is not a one-to-one corresponding dedicated resource:
  • Feedback is performed after each feedback or each TB defines a feedback resource, wherein when feedback is made for each transmission, a feedback channel is selected for each transmission, and feedback is performed; when feedback is performed for each TB, the TB corresponding is selected.
  • the feedback channel provides corresponding feedback for all transmissions of the TB.
  • the end that accepts feedback can be implemented as follows:
  • the feedback is that the information receiving end feeds back feedback resources for each transmission or each TB, wherein, for each transmission, feedback is selected for each transmission, and the feedback is performed by the information receiving end.
  • each TB performs feedback, the feedback channel corresponding to the last transmission is selected, and the corresponding feedback is made for the last transmission.
  • the feedback resource corresponding to the resource that is received by the information on the PC5 interface is not a one-to-one corresponding dedicated resource:
  • positive feedback is sent or negative feedback is sent; in the broadcast mode, negative feedback is sent; where positive feedback is feedback after receiving the information correctly, and negative feedback is performed after the information is not correctly received or not received. feedback of.
  • the positive feedback is sent or the negative feedback is sent because the feedback person knows how many members are in the group, and after knowing the number of users that should be fed back, only one of them needs to be fed back, and the respondent can know the situation being feedback; for example; 10 members in the group should feedback 9 and agree that only positive feedback will be used for feedback. When 7 are received, the remaining 2 are negative feedback.
  • the end that accepts feedback can be implemented as follows:
  • the negative feedback In the multicast mode, according to the received positive feedback/negative feedback, it is determined that the negative feedback accounts for all the proportions to be fed back; for the broadcast mode, the negative feedback is received; wherein the positive feedback is the feedback after the correct reception of the information, and the negative feedback Is feedback that is not received correctly or that has not been received;
  • the final feedback result is determined according to the proportion of negative feedback in the multicast mode to all the feedbacks to be fed back or the number of negative feedbacks in the broadcast mode.
  • determining a threshold of 80% more than 80% of the positive feedback can be regarded as positive feedback.
  • the method further includes:
  • the energy control is performed when negative or positive feedback is sent, so that the feedback information sent by the feedback senders of different distances by the feedback arrives at the received power of the respondent is consistent.
  • the feedback resource corresponding to the resource that is received by the information on the PC5 interface is not a one-to-one corresponding dedicated resource:
  • feedback is provided on the information of the resource that exceeds the RSRP resource exclusion threshold.
  • the method further includes:
  • the feedback is for one transmission and is not SPS, if the delay is not exceeded, and the maximum number of transmissions is not exceeded, and no ACK is received, the service is retransmitted; otherwise, the cache is released; and/or,
  • a non-self-contained structure may be adopted.
  • the system has a mapping mode.
  • Feedback resources are defined for each transmission or for each TB. There are two ways to do this: 1) define only one resource; 2) define positive and negative feedback resources.
  • a resource that is, define a positive feedback resource, for example, if it is positive feedback, send feedback on the resource, if it is negative feedback, it will not send it;
  • positive and negative feedback resources are orthogonal. If it is positive feedback, send feedback on the positive feedback resource; if it is negative feedback, send feedback on the negative feedback resource;
  • Self-contained means that the sending resource and the feedback resource are in the same subframe. In the implementation, there is no such requirement, and the feedback end is not required to do feedback.
  • the difference from the self-contained mode only needs to consider a certain timing difference when the RE and the PSSCH are fed back, for example, 4 ms.
  • only one feedback resource is defined, it can be selected in the same way as the feedback resource of the self-contained structure; if the positive and negative feedback resources are defined, the system needs to be set in advance, and different feedback groups, such as the first half of the frequency domain, are used for positive feedback. The latter half of the domain is used for negative feedback.
  • which RE is specifically selected may be selected in the same manner as the self-contained structure.
  • the feedback channel For the feedback for each transmission, the feedback channel needs to be considered for each transmission. For each TB feedback, only the feedback channel corresponding to the last transmission can be considered, and only the corresponding feedback is needed for the last transmission. .
  • feedback is needed for each transmission, feedback is sent for each transmission received; if feedback is made for each TB, only feedback is received on the last transmission received; specifically, SA decoding is successful, data is not necessarily If it succeeds, for the SA decoding success, feedback is made at the position of the corresponding feedback resource, or according to the SPS characteristic, the corresponding location of the transmission is determined, and then the position of the corresponding feedback resource is determined.
  • the vehicle user can perform power control: so that the number of negative feedback users (proportion) can be determined according to the magnitude of the energy, that is, the feedback power of the different users is required to be the same. If the TB has been successfully received and the feedback is for each transmission, then positive feedback or no feedback is made. If the TB is not received normally and the feedback is for each transmission, negative feedback is always required.
  • positive feedback means that no resource reselection or TB retransmission is needed, and negative feedback is needed.
  • RSRP Reference Signal Received Power
  • Receiver Determines whether it is positive feedback or negative feedback based on the energy calculation ratio, and then determines the specific behavior; for example:
  • the feedback is for one transmission and is not SPS, if the delay is not exceeded and the maximum number of transmissions is not exceeded, and no ACK feedback is received, the feedback is continuously sent; otherwise, the buffer is released. and / or,
  • the effect of half-duplex frequency division resources can be considered. It is related to the specific location of the feedback channel. Specifically, the resource selection refers to the service channel, and the service packet is sent, and the feedback is also required to be sent. If the transmission capability is limited, it is assumed that only single carrier transmission is supported. In this case, a transmission time interval (TTI) is either Send feedback or send a traffic channel.
  • TTI transmission time interval
  • Mode 2 can be as follows:
  • feedback can be performed by means of unicast or multicast.
  • the feedback end implementation manner may be an implicit representation on the determined resource and sent to the UE, and the object of the feedback is represented by the system resource allocation.
  • the object of the feedback is represented by the system resource allocation.
  • For unicast only the user who establishes the connection can make feedback, and the feedback end can be directly learned.
  • the resource is used for multiple users, and different feedback terminals can be distinguished by different resource allocations and scrambling code design on the same resource. Equivalent to the system to allocate feedback dedicated resources in advance.
  • the difference from the mode one is that it is necessary for the UE to determine a unique RE, that is, it needs to be fed back according to a specific rule.
  • a unicast user there is only one feedback user, and one RE can be randomly selected.
  • the corresponding RE can be determined according to the RE relative number and its own ID number. For example, the ID of the group ID and the total number of REs are modulo to obtain the corresponding ID.
  • Feedback is provided according to the resources pre-configured by the system.
  • unicast the connected users are fed back through the connected resources.
  • multicast feedback is provided for the different feedback terminals through corresponding resources.
  • Feedback is performed using a channel frame structure of a self-contained structure; wherein predetermined symbols in the frame structure are left for feedback, or a half-symbol or a specific number of REs in the time domain are left to feedback; and/or,
  • Feedback is performed using a channel frame structure that is not self-contained; wherein, feedback is made for each TB in a preset time domain and/or frequency domain.
  • the end that accepts feedback can be implemented as follows:
  • the feedback is fed back using a channel frame structure of the self-contained structure; wherein the predetermined symbols in the frame structure are left for feedback, or the upper half of the time domain or a certain number of REs in the frame structure are left for feedback; and / or,
  • the feedback is fed back using a channel frame structure that is not self-contained; wherein, feedback is made for each TB in a preset time domain and/or frequency domain.
  • Feedback is performed after each feedback or each TB defines a feedback resource, wherein when feedback is made for each transmission, a feedback channel is selected for each transmission, and feedback is performed; when feedback is performed for each TB, the TB corresponding is selected.
  • the feedback channel provides corresponding feedback for all transmissions of the TB.
  • the end that accepts feedback can be implemented as follows:
  • the feedback is that the information receiving end feeds back feedback resources for each transmission or each TB, wherein, for each transmission, feedback is selected for each transmission, and the feedback is performed by the information receiving end.
  • the feedback channel corresponding to the last transmission is selected, and corresponding feedback is sent to the last transmission.
  • the method further includes:
  • the feedback is for one transmission and is not SPS, if the delay is not exceeded, the maximum number of transmissions is not exceeded, and no ACK is received, the feedback is continuously sent; otherwise, the cache is released; and/or,
  • Adopt non-self-contained but system-existing mapping mode for example, it can be specially designed in time domain and frequency domain, for example, a physical resource block (physical resource block) fixed in the frequency domain at a fixed interval of 4ms in the time domain. PRB) or 2 PRBs, etc.
  • Feedback may be made for the TB (as long as the transmission is successful) or for each transmission of the TB, which may depend on the design of the feedback channel. For each transmission of TB, it is possible to ensure that every TB is correctly received without continuous collision. For a TB (initial retransmission overall), the probability of continuous collision can be reduced as much as possible, and there is no guarantee that every TB will receive correctly.
  • both positive and negative feedback can be sent.
  • positive and negative feedback different signals are defined. Whether it is positive feedback or negative feedback, it needs to be sent out, or only positive feedback. If the feedback is for each transmission and the TB has been successfully received, then each reception after positive feedback is either positive feedback or no feedback. If the feedback is for each transmission and the TB is not receiving normally, and the feedback is for each transmission, negative feedback is always required. If the feedback is for the TB, the time at which the feedback channel is located must be the corresponding feedback based on the reception after the last transmission.
  • the impact of half-duplex frequency division resources may need to be considered. This is related to the specific location of the feedback channel.
  • feedback (signal) is performed for the TB in a unicast manner.
  • the feedback channel can be in the form of presence mapping. That is, the feedback channel may be implicitly indicated. For example, corresponding to the Xth RE on the TTI corresponding to the 4ms of the last retransmission resource, X may be implemented by pre-configuration.
  • the vehicle can determine whether a collision may occur (no ACK feedback) based on the result of the feedback, thereby triggering reselection of the resource.
  • feedback (signal) is performed for the TB in a multicast manner.
  • Embodiment 1 The difference from Embodiment 1 is:
  • the feedback channel needs to be distinguished by different users, and can be implemented by scrambling code design and feedback resource differentiation;
  • the vehicle needs to determine whether it is necessary to perform resource reselection processing based on the result of the feedback.
  • Embodiment 1 The difference from Embodiment 1 is:
  • the vehicle needs to determine whether it is necessary to perform resource reselection processing based on the result of the feedback.
  • feedback is made for each transmission of the TB.
  • the feedback channel can be implemented in two ways:
  • the embodiment of the present application further provides a communication device, a device for feeding back information, and a device for determining information through feedback, because the device solves the problem and a pair of received information
  • the means for performing feedback, and the method for determining the information reception by feedback are similar, and therefore the implementation of these devices can be referred to the implementation of the method, and the repeated description is not repeated.
  • FIG. 4 is a schematic structural diagram of a communication device as an information sending end. As shown in the figure, the device includes:
  • the processor 400 is configured to read a program in the memory 420 and perform the following process:
  • the transceiver 410 is configured to receive and transmit data under the control of the processor 400, and performs the following processes:
  • Feedback is based on the information received.
  • an optional implementation manner is: when the feedback is performed according to the information receiving situation, the transceiver 410 is specifically configured to:
  • the feedback resources corresponding to the resources of the information received by the PC5 interface are not one-to-one corresponding dedicated resources, and are fed back by broadcast and/or multicast by using pulse energy;
  • the feedback resources corresponding to the resources of the information received on the PC5 interface are one-to-one corresponding dedicated resources, and are fed back by unicast and/or multicast in a signal manner.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is not a one-to-one dedicated resource:
  • feedback is performed in a frame reserved with a feedback resource corresponding to the frame in which the received message is located.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is not a one-to-one dedicated resource:
  • Feedback is performed after each feedback or each TB defines a feedback resource, wherein when feedback is made for each transmission, a feedback channel is selected for each transmission, and feedback is performed; when feedback is performed for each TB, the TB corresponding is selected.
  • the feedback channel provides corresponding feedback for all transmissions of the TB.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is not a one-to-one dedicated resource:
  • positive feedback is sent or negative feedback is sent; in the broadcast mode, negative feedback is sent; where positive feedback is feedback after receiving the information correctly, and negative feedback is performed after the information is not correctly received or not received. feedback of.
  • transceiver 410 is further configured to:
  • the energy control is performed when negative or positive feedback is sent, so that the feedback information sent by the feedback senders of different distances by the feedback arrives at the received power of the respondent is consistent.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is not a one-to-one dedicated resource:
  • feedback is provided on the information of the resource that exceeds the RSRP resource exclusion threshold.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is a dedicated resource corresponding to one-to-one:
  • Feedback is provided according to the resources pre-configured by the system.
  • unicast the connected users are fed back through the connected resources.
  • multicast feedback is provided for the different feedback terminals through corresponding resources.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is a dedicated resource corresponding to one-to-one:
  • Feedback is performed using a channel frame structure of a self-contained structure; wherein predetermined symbols in the frame structure are left for feedback, or a half-symbol or a specific number of REs in the time domain are left to feedback; and/or,
  • Feedback is performed using a channel frame structure that is not self-contained; wherein, feedback is made for each TB in a preset time domain and/or frequency domain.
  • an optional implementation manner is: performing feedback on each TB in a preset time domain and/or frequency domain, including:
  • the preset time domain is a time domain resource with a fixed time interval
  • the preset frequency domain is one or more PRBs fixed in a frequency domain location.
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the PC5 interface is a dedicated resource corresponding to one-to-one:
  • Feedback is performed after each feedback or each TB defines a feedback resource, wherein when feedback is made for each transmission, a feedback channel is selected for each transmission, and feedback is performed; when feedback is performed for each TB, the TB corresponding is selected.
  • the feedback channel provides corresponding feedback for all transmissions of the TB.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 400 and various circuits of memory represented by memory 420.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 410 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 430 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 can store data used by the processor 400 when performing operations.
  • FIG. 5 is a schematic structural diagram of a communication device as an information receiving end. As shown in the figure, the device includes:
  • the processor 500 is configured to read a program in the memory 520 and perform the following process:
  • the transceiver 510 is configured to receive and transmit data under the control of the processor 500, and performs the following processes:
  • the information reception status is determined based on the feedback.
  • an optional implementation manner is that the feedback resource corresponding to the resource that is sent by the information on the PC5 interface is not a one-to-one dedicated resource, and the feedback is performed by using a pulse energy method by using broadcast and/or multicast;
  • the feedback resources corresponding to the resources on which the information sent by the PC5 interface is located are not one-to-one corresponding dedicated resources, and the feedback is fed back by unicast and/or multicast in a signal manner.
  • an optional implementation manner is: when the feedback resource corresponding to the resource where the information sent by the PC5 interface is located is not a one-to-one dedicated resource:
  • feedback is performed in a frame reserved with a feedback resource corresponding to the frame in which the message is sent.
  • an optional implementation manner is: when the feedback is performed by using the broadcast, the feedback is performed by the information receiving end according to the sum of the MAC ID of the terminal that performs feedback and the number of REs of the PSSCH corresponding to the received TB.
  • the modulo operation determines the RE of the feedback, or randomly selects an RE for feedback.
  • an optional implementation manner is: when the feedback resource corresponding to the resource where the information sent by the PC5 interface is located is not a one-to-one dedicated resource:
  • the negative feedback In the multicast mode, according to the received positive feedback/negative feedback, it is determined that the negative feedback accounts for all the proportions to be fed back; for the broadcast mode, the negative feedback is received; wherein the positive feedback is the feedback after the correct reception of the information, and the negative feedback Is feedback that is not received correctly or that has not been received;
  • the final feedback result is determined according to the proportion of negative feedback in the multicast mode to all the feedbacks to be fed back or the number of negative feedbacks in the broadcast mode.
  • an optional implementation manner further includes:
  • the number of users who determine positive feedback or negative feedback by the amount of energy is the number of users who determine positive feedback or negative feedback by the amount of energy.
  • an optional implementation manner is: when the feedback resource corresponding to the resource where the information sent by the PC5 interface is located is not a dedicated resource, the method further includes:
  • the feedback is for one transmission and is not SPS, if the delay is not exceeded, and the maximum number of transmissions is not exceeded, and no ACK is received, the service is retransmitted; otherwise, the cache is released; and/or,
  • an optional implementation manner is: when the feedback resource corresponding to the resource that is received by the information on the PC5 interface is a one-to-one corresponding dedicated resource, the method further includes:
  • the feedback is for one transmission and is not SPS, if the delay is not exceeded, the maximum number of transmissions is not exceeded, and no ACK is received, the feedback is continuously sent; otherwise, the cache is released; and/or,
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 500 and various circuits of memory represented by memory 520.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 510 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 530 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.
  • the apparatus of the present application further provides an apparatus for feeding back information, including:
  • a receiving module configured to receive information on the PC5 interface
  • a feedback module for feedback based on information reception.
  • An apparatus for determining information reception by feedback including:
  • a sending module configured to send information on the PC5 interface
  • a determining module for determining information reception based on the feedback.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

L'invention concerne un procédé et un dispositif pour renvoyer des informations et déterminer la réception d'informations au moyen d'une rétroaction. Le procédé comprend : la réception d'informations au niveau d'une interface PC5 ; la fourniture d'une rétroaction selon un état de réception d'informations ; l'envoi des informations au niveau de l'interface PC5 ; et la détermination de l'état de réception d'informations en fonction de la rétroaction. Du fait que la rétroaction est fournie selon l'état de réception d'informations après la réception des informations au niveau de l'interface PC5 et qu'une extrémité d'envoi détermine l'état de réception d'informations en fonction de la rétroaction après l'envoi des informations au niveau de l'interface PC5, la présente invention résout le problème de l'absence de rétroaction pour des informations envoyées au niveau de l'interface PC5.
PCT/CN2019/086916 2018-05-15 2019-05-14 Procédé et dispositif pour renvoyer des informations et déterminer une réception d'informations au moyen d'une rétroaction WO2019219017A1 (fr)

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