WO2020237496A1 - 传输时间调整配置方法及装置 - Google Patents

传输时间调整配置方法及装置 Download PDF

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Publication number
WO2020237496A1
WO2020237496A1 PCT/CN2019/088758 CN2019088758W WO2020237496A1 WO 2020237496 A1 WO2020237496 A1 WO 2020237496A1 CN 2019088758 W CN2019088758 W CN 2019088758W WO 2020237496 A1 WO2020237496 A1 WO 2020237496A1
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WIPO (PCT)
Prior art keywords
physical layer
feedback channel
synchronization reference
reference timing
layer direct
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PCT/CN2019/088758
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English (en)
French (fr)
Inventor
赵群
Original Assignee
北京小米移动软件有限公司
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Filing date
Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2019/088758 priority Critical patent/WO2020237496A1/zh
Priority to EP19931136.6A priority patent/EP3979726A4/en
Priority to CN201980000950.5A priority patent/CN110366864B/zh
Priority to US17/614,449 priority patent/US20220240209A1/en
Publication of WO2020237496A1 publication Critical patent/WO2020237496A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/006—Synchronisation arrangements determining timing error of reception due to propagation delay using known positions of transmitter and receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

Definitions

  • the present disclosure relates to the field of communications, and in particular to a method and device for adjusting and configuring transmission time.
  • V2x Vehicle to Everything, Internet of Vehicles
  • V2V Vehicle to Vehicle
  • V2I Vehicle to Infrastucture, between vehicle equipment and roadside equipment
  • V2P Vehicle to Phone, vehicle equipment and Between handheld devices
  • all receivers in the multicast packet send the HARQ result through the same resource only when the HARQ result indicates that the multicast data has not been successfully received, that is, when the HARQ result is NACK (Negative-Acknowledgment) To the sending end.
  • NACK Negative-Acknowledgment
  • All receivers in the multicast packet synchronize to send the HARQ result through the same resource based on the reference synchronization timing, as shown in FIG. 1A for example.
  • the devices at the receiving end in a multicast packet may be distributed in a relatively wide area, for example, within a preset distance value range centered on the sending end (wherein the size of the preset distance value depends on the communication of V2x communication Distance), the distance between different receiving end and transmitting end may be very different.
  • the sending end receives HARQ results sent by multiple receiving ends in the same resource, and the delays corresponding to different HARQ results may cancel each other due to phase rotation, so that the sending end cannot correctly identify whether there is a NACK feedback signal.
  • all receivers in the multicast packet feed back the HARQ result through different resources regardless of the HARQ result, that is, regardless of whether the HARQ result is ACK (Acknowledgment, acknowledgement response) or NACK.
  • embodiments of the present disclosure provide a transmission time adjustment method and device.
  • a transmission time adjustment method the method being used at any receiving end in a direct link multicast communication, and the method includes:
  • the first time offset value is determined in the following manner:
  • the first time offset value is determined in the following manner:
  • the first time deviation value is determined according to the distance value.
  • the method further includes:
  • Receiving direct connection control information sent by the sending end that includes at least the first geographic location information where the sending end is located;
  • the determining the distance value between the receiving end and the sending end includes:
  • the method before the target timing of the synchronization reference timing and the first time offset value from the synchronization reference timing interval, before starting to send the physical layer direct communication feedback channel, the method further includes:
  • the method before the target timing of the synchronization reference timing and the first time offset value from the synchronization reference timing interval, before starting to send the physical layer direct communication feedback channel, the method further includes:
  • the physical layer direct feedback channel If it is determined according to the indication of the downlink information to send the physical layer direct feedback channel in advance, then execute the target timing before the synchronization reference timing and the first time offset value from the synchronization reference timing interval, and start sending The physical layer is directly connected to the communication feedback channel.
  • the method before the target timing of the synchronization reference timing and the first time offset value from the synchronization reference timing interval, before starting to send the physical layer direct communication feedback channel, the method further includes:
  • the execution of the target timing that is before the synchronization reference timing and the first time offset value from the synchronization reference timing is started The step of sending the physical layer direct communication feedback channel.
  • the method before the target timing of the synchronization reference timing and the first time offset value from the synchronization reference timing interval, before starting to send the physical layer direct communication feedback channel, the method further includes:
  • the type of feedback information carried by the physical layer direct communication feedback channel the feedback mode of the feedback information carried by the physical layer direct communication feedback channel, and the format of the physical layer direct communication feedback channel Determining whether to send the physical layer direct connection feedback channel in advance;
  • a transmission time adjustment device the method is used for any receiving end in a direct link multicast communication, and the device includes:
  • the sending module is configured to start sending the physical layer direct communication feedback channel at the target timing of the first time offset value from the synchronization reference timing before the synchronization reference timing.
  • the sending module includes:
  • the first determining submodule is configured to determine the second time offset value between the first timing at which the direct signal sent by the transmitting end is received and the synchronization reference timing; the second determining submodule is configured to The first time offset value is determined according to the second time offset value.
  • the sending module includes:
  • the third determining submodule is configured to determine the geographic distance value between the receiving end and the sending end;
  • the fourth determining submodule is configured to determine the first time deviation value according to the distance value.
  • the device further includes:
  • the first receiving module is configured to receive direct connection control information sent by the sending end that includes at least the first geographic location information where the sending end is located;
  • the third determining submodule includes:
  • the determining unit is configured to determine the second geographic location information where it is located;
  • the calculation unit is configured to calculate the distance value according to the first geographic location information and the second geographic location information.
  • the device further includes:
  • the first determining module is configured to determine whether to send the physical layer direct feedback channel in advance according to the pre-configuration information
  • the first control module is configured to, if it is determined according to the pre-configuration information to send the physical layer direct feedback channel in advance, control the sending module to be before the synchronization reference timing and to be separated from the synchronization reference timing for the first time At the target timing of the offset value, start sending the physical layer direct communication feedback channel.
  • the device further includes:
  • the second receiving module is configured to receive downlink information sent by the base station
  • a second determining module configured to determine whether to send the physical layer direct feedback channel in advance according to an indication of the downlink information
  • the second control module is configured to, if it is determined to send the physical layer direct feedback channel in advance according to the indication of the downlink information, control the sending module to be before the synchronization reference timing and to be at the first interval from the synchronization reference timing. At the target timing of the time offset value, start sending the physical layer direct communication feedback channel.
  • the device further includes:
  • the third receiving module is configured to receive the direct connection control information sent by the sending end;
  • a third determining module configured to determine whether to send the physical layer direct feedback channel in advance according to an indication of the direct connection control information
  • the third control module is configured to, if it is determined to send the physical layer direct feedback channel in advance according to the instructions of the direct connection control information, control the sending module to be before the synchronization reference timing and to be separated from the synchronization reference timing The target timing of the first time offset value starts sending the physical layer direct communication feedback channel.
  • the device further includes:
  • the fourth determining module is configured to be based on the type of feedback information carried by the physical layer direct communication feedback channel, the feedback mode of the feedback information carried by the physical layer direct communication feedback channel, and the physical layer direct communication feedback At least one of the channel formats determines whether to send the physical layer direct feedback channel in advance;
  • the fourth control module is configured to, if it is determined that it is necessary to send the physical layer direct feedback channel in advance, control the sending module before the synchronization reference timing and the target of the first time offset value from the synchronization reference timing interval Timing, start sending the physical layer direct communication feedback channel.
  • a computer-readable storage medium stores a computer program, and the computer program is configured to execute the transmission time adjustment method described in the first aspect.
  • a transmission time adjustment device which is used at any receiving end in a direct link multicast communication, and includes:
  • a memory for storing processor executable instructions
  • the processor is configured to:
  • any receiving end in the direct link multicast communication can start sending the physical layer direct communication feedback channel at the target timing.
  • the target timing is located before the synchronization reference timing and is separated from the synchronization reference timing by a first time offset value.
  • the receiving end may no longer start sending the physical layer direct communication feedback channel from the synchronization reference timing, but start sending the physical layer direct communication feedback channel from the target timing in advance.
  • different receivers can correspond to different target timings, so that the sender can receive the physical layer direct communication feedback channels sent by different receivers in the same multicast packet at the same time, which greatly reduces the amount of time in the same multicast packet.
  • the time difference between the physical layer direct communication feedback channels sent by different receiving ends to the transmitting end improves the reliability of direct link multicast communication.
  • the receiving end may determine the first time offset value according to the second time offset value between the first timing of the direct connection signal sent by the transmitting end and the synchronization reference timing. . Easy to implement and high availability.
  • the receiving end may also determine the first time offset value according to the distance value of the geographic location between itself and the sending end, which is easy to implement and has high availability.
  • the sending end may send the first geographic location information of the sending end to the receiving end through the direct connection control information, and the receiving end calculates the relationship between itself and sending The distance value between the ends, high availability.
  • the receiving end may first determine whether to send the physical layer direct feedback channel in advance according to its own pre-configuration information.
  • the physical layer is directly connected to the feedback channel.
  • the receiving end can determine whether to send the physical layer direct feedback channel in advance according to its own pre-configuration information, making the communication process of direct link multicast more flexible.
  • the receiving end may also determine whether to send the physical layer direct feedback channel in advance according to the indication of the downlink information sent by the base station, which also makes the direct link multicast communication process more flexible.
  • the receiving end can also determine whether to send the physical layer direct feedback channel in advance according to the instructions of the direct connection control information sent by the sending end, which also makes the direct link multicast communication process more flexible and more usable .
  • the receiving end may also be based on the type of feedback information carried by the physical layer direct communication feedback channel, the feedback mode of the feedback information carried by the physical layer direct communication feedback channel, and the physical layer direct connection At least one of the formats of the communication feedback channel is used to determine whether to send the physical layer direct feedback channel in advance, which also makes the communication process of the direct link multicast more flexible and more usable.
  • 1A to 1B are schematic diagrams of scenarios where the receiving end feeds back the HARQ result in the related art.
  • Fig. 2 is a schematic diagram showing a transmission time adjustment scenario according to an exemplary embodiment.
  • Fig. 3 is a schematic diagram showing a method for adjusting transmission time according to an exemplary embodiment.
  • Fig. 4 is a schematic diagram showing another transmission time adjustment method according to an exemplary embodiment.
  • Fig. 5 is a schematic diagram showing another transmission time adjustment method according to an exemplary embodiment.
  • Fig. 6 is a schematic diagram showing another transmission time adjustment method according to an exemplary embodiment.
  • Fig. 7 is a schematic diagram showing another transmission time adjustment method according to an exemplary embodiment.
  • Fig. 8 is a schematic diagram showing another transmission time adjustment method according to an exemplary embodiment.
  • Fig. 9 is a schematic diagram showing another transmission time adjustment method according to an exemplary embodiment.
  • Fig. 10 is a block diagram showing a device for adjusting transmission time according to an exemplary embodiment.
  • Fig. 11 is a block diagram showing another device for adjusting transmission time according to an exemplary embodiment.
  • Fig. 12 is a block diagram showing another device for adjusting transmission time according to an exemplary embodiment.
  • FIGS. 13A to 13B are block diagrams showing another device for adjusting transmission time according to an exemplary embodiment.
  • Fig. 14 is a block diagram showing another device for adjusting transmission time according to an exemplary embodiment.
  • Fig. 15 is a block diagram showing another device for adjusting transmission time according to an exemplary embodiment.
  • Fig. 16 is a block diagram showing another device for adjusting transmission time according to an exemplary embodiment.
  • Fig. 17 is a block diagram showing another device for adjusting transmission time according to an exemplary embodiment.
  • Fig. 18 is a schematic structural diagram of a transmission time adjustment device according to an exemplary embodiment of the present disclosure.
  • first, second, third, etc. may be used in this disclosure to describe various information, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as second information, and similarly, the second information may also be referred to as first information.
  • word “if” as used herein can be interpreted as "when” or “when” or "in response to determination”.
  • the transmission time adjustment method provided by the embodiments of the present disclosure can allow the physical layer direct communication feedback channels sent by different receiving ends in the same multicast packet to reach the sending end at the same time after different transmission delays, which improves the direct link group The reliability of broadcast communication.
  • the embodiment of the present disclosure provides a transmission time adjustment method, which can be used at any receiving end in direct link multicast communication, and the method may include the following steps:
  • step 101 before the synchronization reference timing and at the target timing of the first time offset value from the synchronization reference timing interval, start sending the physical layer direct communication feedback channel.
  • synchronization reference timing is a reference timing used by the receiving end to send a direct signal.
  • the synchronization reference timing may be a timing from a GNSS (Global Navigation Satellite System, global navigation satellite system), for example, a GPS (Global Positioning System, global positioning system) signal.
  • the reference synchronization timing may be the timing of the downlink synchronization signal sent by the base station, and the downlink synchronization signal may be PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal, secondary synchronization signal), and so on.
  • the reference synchronization timing may also be other user equipment, such as the synchronization timing of SLSS (Sidelink Synchronization Signal, direct link synchronization signal) provided by the transmitting end or other receiving end.
  • the reference synchronization timing can also come from the crystal oscillator timing of the user equipment itself.
  • the receiving end may select one of the foregoing as its own synchronization reference timing according to the protocol.
  • the first time offset value may be a positive integer multiple of T C.
  • T C is the smallest unit of time for signal processing in NR, as shown in Equation 1:
  • ⁇ f max 480 ⁇ 10 3 Hz
  • N f 4096.
  • the receiving end uses the physical layer direct communication feedback channel to feedback whether the HARQ result of the direct data sent by the transmitting end is successfully received.
  • the receiving end no longer sends the physical layer direct communication feedback channel to the sending end according to the synchronization reference timing, but advances the synchronization reference timing according to the respective first time offset value, that is, according to the respective target timing Send the physical layer direct communication feedback channel to the sender.
  • the receiving end only feeds back when the HARQ result is NACK, and starts sending the physical layer direct communication feedback channel to the sending end from the target timing corresponding to itself; no feedback is performed when the HARQ result is ACK.
  • NACK feedback from different receivers uses the same feedback resource, and the data transmitter receives mixed feedback signals from all receivers.
  • the sending end will simultaneously receive the physical layer direct communication feedback channel sent by at least one receiving end in the multicast packet.
  • different receivers can advance different timings according to their respective signal propagation delays, that is, use different target timings, so that the feedback signals sent by different receivers can reach the sender at the same time, avoiding different signals.
  • Propagation delay causes the problem that different signals in the mixed signal cancel each other due to phase rotation, which greatly reduces the time difference between the physical layer direct communication feedback channels sent by different receivers in the same multicast packet and the sender.
  • the multicast packet improves The reliability of direct link multicast communication.
  • the receiving end feeds back ACK when the HARQ result is ACK, and NACK when the HARQ result is NACK, and different receiving ends use different feedback resources for feedback.
  • the data sending end receives the feedback sent by different receiving ends respectively.
  • different receiving ends can also perform different timing advances according to their respective signal propagation delays, that is, using different target timings, so that feedback signals sent by different receiving ends can reach the sending end at the same time.
  • different receivers use frequency-domain orthogonal multiplexing or code-domain orthogonal multiplexing feedback resources for transmission, the orthogonality drop caused by different signal propagation delays is avoided, and the direct link can also be improved. Reliability of multicast communication.
  • the receiving end may determine the first time offset value according to the second time offset value between the first timing and the synchronization reference timing obtained from the received direct signal sent by the transmitting end .
  • FIG. 3 is a flowchart of another transmission time adjustment method according to an embodiment.
  • Step 101 may include:
  • step 101-11 a second time offset value between the first timing at which the direct signal sent by the sending end is received and the synchronization reference timing is determined.
  • the timing here can be any timing such as symbol timing, slot timing, subframe timing, or frame timing.
  • the second time offset value may be less than the OFDM symbol length, for example, an integer multiple of the Tc value.
  • the receiving end can determine that the receiving end has received the sending end by detecting the time domain resource where the CP (Cyclic Prefix) of the OFDM symbol of the direct connection signal sent by the sending end is located.
  • the first timing of the transmitted direct signal may be multicast data.
  • the receiving end may determine a second time offset value between the synchronization reference timing and the first timing.
  • step 101-12 the first time offset value is determined according to the second time offset value.
  • the receiving end can add a fixed time offset value on the basis of the second time offset value to obtain the first time offset value, or the receiving end can also determine that it is proportional to the second time offset value Or the first time offset value of other functional relationships. This disclosure is not limited to this.
  • the receiving end may determine the first time offset value according to the second time offset value between the first timing of the direct signal sent by the transmitting end and the synchronization reference timing. Easy to implement and high availability.
  • the receiving end may determine the first time offset value according to the distance value of the geographic location between the receiving end and the sending end.
  • FIG. 4 is a flowchart of another transmission time adjustment method according to an embodiment.
  • Step 101 may include:
  • the distance value of the geographic location between the receiving end and the sending end is determined.
  • the receiving end may calculate the distance value according to the first geographic location information of the transmitting end and the second geographic location information where it is located.
  • the first time offset value is determined according to the distance value.
  • the receiving end may determine the first time offset value as shown in formula 2:
  • the first time offset value d (c 1 ⁇ s/v)+c 2 Formula 2
  • c 1 and c 2 are constants, s is the distance between the receiving end and the sending end, and v is the speed of light.
  • the receiving end can also determine the first time offset value according to the distance value between itself and the sending end. The larger the distance value, the larger the first time offset value, which can ensure the timing of the sending end.
  • the physical layer direct communication feedback channels sent by the receiving end with different distance values from the sending end are received almost simultaneously, which improves the reliability of the direct link multicast communication.
  • FIG. 5 is a flowchart of another transmission time adjustment method according to the embodiment shown in FIG. 4.
  • the above method may further include:
  • step 100-1 receiving direct connection control information sent by the sending end that includes at least the first geographic location information where the sending end is located.
  • the sender can send the first geographic location information where the sender is located to all receivers in the multicast packet through direct connection control information.
  • steps 101-21 may include:
  • steps 101-211 determine the second geographic location information where oneself is located
  • the receiving end can determine its own second geographic location information according to the pre-installed GPS.
  • the distance value is calculated according to the first geographic location information and the second geographic location information.
  • the receiving end has received the first geographic location information sent by the transmitting end in advance, and the receiving end can directly calculate the distance between the transmitting end and the receiving end according to the first geographic location information and the second geographic location information.
  • the sending end may send the first geographic location information of the sending end to the receiving end through the direct connection control information, and the receiving end calculates the relationship between itself and the sending end based on the second geographic location information where it is located and the first geographic location information.
  • the distance between the values high availability.
  • FIG. 6 is a flowchart of another transmission time adjustment method according to an embodiment. Before step 101 is performed, the above method may further include:
  • step 100-2 it is determined whether to send the physical layer direct feedback channel in advance according to the pre-configuration information.
  • the pre-configuration information that has been pre-configured in the device hardware when the receiving end leaves the factory indicates that the physical layer direct connection feedback channel needs to be sent in advance.
  • the physical layer is directly connected to the feedback channel.
  • the receiving end can determine whether to send the physical layer direct feedback channel in advance according to its own pre-configuration information, so that the direct link multicast communication process is more flexible.
  • FIG. 7 is a flowchart of another transmission time adjustment method according to an embodiment. Before step 101 is performed, the above method may further include:
  • step 100-3 the downlink information sent by the base station is received.
  • the downlink information includes, but is not limited to, system messages broadcast by the base station, or RRC (Radio Resource Control) signaling, MAC (Media Resource Control) signaling, and MAC (Media Resource Control) signaling sent by the base station to a designated receiver, such as all receivers in a multicast packet.
  • RRC Radio Resource Control
  • MAC Media Resource Control
  • MAC Media Resource Control
  • step 100-4 it is determined whether to send the physical layer direct feedback channel in advance according to the indication of the downlink information.
  • the receiving end determines whether to reflect the physical layer direct connection feedback channel in advance according to the indication of the downlink information sent by the base station.
  • the receiving end can start sending the physical layer direct feedback channel at the target timing through step 101.
  • the receiving end may also determine whether to send the physical layer direct feedback channel in advance according to the indication of the downlink information sent by the base station, which also makes the communication process of the direct link multicast more flexible.
  • FIG. 8 is a flowchart of another transmission time adjustment method according to an embodiment. Before step 101 is performed, the above method may further include:
  • step 100-5 the direct connection control information sent by the sending end is received.
  • the sending end may also indicate in the direct connection control information whether the receiving end sends the physical layer direct feedback channel in advance.
  • step 100-1 and step 100-5 can be combined into the same step, that is, the sending end can not only include its own first geographic location information in the direct connection control information sent, but also instruct the receiving end whether to send the physical layer in advance. Directly connect the feedback channel.
  • step 100-6 it is determined whether to send the physical layer direct feedback channel in advance according to the indication of the direct connection control information.
  • the receiving end After receiving the direct connection control information sent by the sending end, the receiving end determines whether to send the physical layer direct connection feedback channel in advance according to the instruction of the direct connection control information.
  • the sending end instructs the receiving end to send the physical layer direct feedback channel in advance through the direct connection control information
  • the receiving end can start sending the physical layer direct feedback channel at the target timing through step 101.
  • the receiving end may also determine whether to send the physical layer direct feedback channel in advance according to the direct connection control information sent by the sending end, which also makes the direct link multicast communication process more flexible and more usable.
  • FIG. 9 is a flowchart of another transmission time adjustment method according to an embodiment. Before step 101 is performed, the above method may further include:
  • step 100-7 according to the type of feedback information carried by the physical layer direct communication feedback channel, the feedback mode of the feedback information carried by the physical layer direct communication feedback channel, and the physical layer direct communication feedback channel At least one of the formats determines whether to send the physical layer direct feedback channel in advance.
  • the type of feedback information carried by the physical layer direct communication feedback channel may be HARQ result or channel quality information.
  • the feedback mode of the feedback information carried by the physical layer direct communication feedback channel can be the above-mentioned first feedback mode, for example, only feedback when the HARQ result is NACK, or it can be the above-mentioned second feedback mode, for example, whether the HARQ result is NACK or ACKs are fed back.
  • the format of the physical layer direct communication feedback channel is the PSFCH (Physical Sidelink Feedback Channel) format.
  • PSFCH Physical Sidelink Feedback Channel
  • it can be a format based on sequence feedback or a format based on transmission modulation symbols.
  • the type of the feedback information may be a preset type, for example, a preset type.
  • the type HARQ result and the HARQ result is NACK, it is determined that the physical layer direct communication feedback channel needs to be sent in advance.
  • the feedback mode may be a preset feedback mode, for example, the preset feedback mode is In the above-mentioned first feedback mode, it is determined that the physical layer direct communication feedback channel needs to be sent in advance.
  • the receiving end determines whether to send the physical layer direct communication feedback channel in advance according to the format of the physical layer direct communication feedback channel, it may determine the need when the PSFCH is in a preset format, for example, when the preset format is a format based on sequence feedback Send the physical layer direct communication feedback channel in advance.
  • step 101 may be executed to start sending the physical layer direct feedback channel from the target timing.
  • the receiving end may also be based on the type of feedback information carried by the physical layer direct communication feedback channel, the feedback mode of the feedback information carried by the physical layer direct communication feedback channel, and the physical layer direct communication At least one of the feedback channel formats is used to determine whether to send the physical layer direct feedback channel in advance, which also makes the direct link multicast communication process more flexible and more usable.
  • the present disclosure also provides embodiments of application function realization apparatuses.
  • FIG. 10 is a block diagram showing a transmission time adjustment device according to an exemplary embodiment.
  • the device is used for any receiving end in a direct link multicast communication, and the device includes:
  • the sending module 210 is configured to start sending the physical layer direct communication feedback channel at the target timing of the first time offset value from the synchronization reference timing before the synchronization reference timing.
  • FIG. 11 is a block diagram showing another transmission time adjustment device based on the embodiment shown in FIG. 10.
  • the sending module 210 includes:
  • the first determining submodule 211 is configured to determine the second time offset value between the first timing at which the direct signal sent by the transmitting end is received and the synchronization reference timing; the second determining submodule 212 is configured to It is configured to determine the first time offset value according to the second time offset value.
  • FIG. 12 is a block diagram showing another transmission time adjustment device based on the embodiment shown in FIG. 10.
  • the sending module 210 includes:
  • the third determining submodule 213 is configured to determine the distance value of the geographic location between the receiving end and the sending end;
  • the fourth determining sub-module 214 is configured to determine the first time deviation value according to the distance value.
  • FIG. 13A is a block diagram showing another device for adjusting transmission time based on the embodiment shown in FIG. 12, and the device further includes:
  • the first receiving module 220 is configured to receive direct connection control information sent by the sending end that includes at least the first geographic location information where the sending end is located;
  • FIG. 13B is a block diagram of another transmission time adjustment device shown on the basis of the embodiment shown in FIG. 13A, and the third determining submodule 213 includes:
  • the determining unit 2131 is configured to determine the second geographic location information where it is located;
  • the calculation unit 2132 is configured to calculate the distance value according to the first geographic location information and the second geographic location information.
  • FIG. 14 is a block diagram showing another transmission time adjustment apparatus based on the embodiment shown in FIG. 10.
  • the apparatus further includes:
  • the first determining module 230 is configured to determine whether to send the physical layer direct feedback channel in advance according to the pre-configuration information
  • the first control module 240 is configured to, if it is determined according to the pre-configuration information to send the physical layer direct feedback channel in advance, control the sending module 210 to be before the synchronization reference timing and at the first interval from the synchronization reference timing. At the target timing of a time offset value, start sending the physical layer direct communication feedback channel.
  • FIG. 15 is a block diagram showing another transmission time adjustment device based on the embodiment shown in FIG. 10.
  • the device further includes:
  • the second receiving module 250 is configured to receive downlink information sent by the base station
  • the second determining module 260 is configured to determine whether to send the physical layer direct feedback channel in advance according to an indication of the downlink information
  • the second control module 270 is configured to, if it is determined to send the physical layer direct feedback channel in advance according to the indication of the downlink information, control the sending module 210 to be before the synchronization reference timing and to be separated from the synchronization reference timing. At the target timing of the first time offset value, start sending the physical layer direct communication feedback channel.
  • FIG. 16 is a block diagram of another transmission time adjustment device shown on the basis of the embodiment shown in FIG. 10.
  • the device further includes:
  • the third receiving module 280 is configured to receive the direct connection control information sent by the sending end;
  • the third determining module 290 is configured to determine whether to send the physical layer direct feedback channel in advance according to an indication of the direct connection control information
  • the third control module 310 is configured to, if it is determined to send the physical layer direct feedback channel in advance according to the instructions of the direct connection control information, then control the sending module 210 to be before the synchronization reference timing and to communicate with the synchronization reference The target timing of the first time offset value of the timing interval starts to send the physical layer direct communication feedback channel.
  • FIG. 17 is a block diagram showing another transmission time adjustment device based on the embodiment shown in FIG. 10.
  • the device further includes:
  • the fourth determining module 320 is configured according to the type of feedback information carried by the physical layer direct communication feedback channel, the feedback mode of the feedback information carried by the physical layer direct communication feedback channel, and the physical layer direct communication At least one of the feedback channel formats determines whether to send the physical layer direct feedback channel in advance;
  • the fourth control module 330 is configured to, if it is determined that the physical layer direct connection feedback channel needs to be sent in advance, control the sending module to be before the synchronization reference timing and have a first time offset from the synchronization reference timing. At the target timing, start sending the physical layer direct communication feedback channel.
  • the relevant part can refer to the part of the description of the method embodiment.
  • the device embodiments described above are merely illustrative, and the units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one unit. Locally, or it can be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the present disclosure. Those of ordinary skill in the art can understand and implement it without creative work.
  • the present disclosure also provides a computer-readable storage medium, the storage medium stores a computer program, and the computer program is used to execute any of the transmission time adjustment methods described above for the receiving end.
  • the present disclosure also provides a transmission time adjustment device, which is used at any receiving end in direct link multicast communication, and includes:
  • a memory for storing processor executable instructions
  • the processor is configured to:
  • the synchronization reference timing is a reference timing for the receiving end to send a direct connection signal.
  • FIG. 18 is a schematic structural diagram of a transmission time adjusting device 1800 according to an exemplary embodiment.
  • the apparatus 1800 may be provided as a receiving end, such as a vehicle-mounted device, a handheld device, and the like.
  • the apparatus 1800 includes a processing component 1822, which further includes one or more processors, and a memory resource represented by a memory 1832 for storing instructions executable by the processing component 1822, such as application programs.
  • the application program stored in the memory 1832 may include one or more modules each corresponding to a set of instructions.
  • the processing component 1822 is configured to execute instructions to execute the transmission time adjustment method described above.
  • the device 1800 may also include a power component 1826 configured to perform power management of the device 1800, a wired or wireless network interface 1850 configured to connect the device 1800 to a network, and an input output (I/O) interface 1858.
  • the device 1800 can operate based on an operating system stored in the memory 1832, such as Android, IOS, Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.
  • the apparatus 1800 when the instruction in the memory 1832 is executed by the processing component 1822, the apparatus 1800 is enabled to execute the foregoing transmission time adjustment method.

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Abstract

本公开提供一种传输时间调整方法及装置，其中，所述方法包括：在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。本公开中不同接收端可以对应不同的目标定时，从而可以让发送端同时接收到同一组播分组内的不同接收端发送的物理层直连通信反馈信道，提高了直连链路组播通信的可靠性。

Description

传输时间调整配置方法及装置 技术领域
本公开涉及通信领域，尤其涉及传输时间调整配置方法及装置。
背景技术
目前，V2x(Vehicle to everything，车联网)通信包括V2V(Vehicle to Vehicle，车载设备间)通信，V2I(Vehicle to Infrastucture，车载设备和路边设备间)通信和V2P(Vehicle to Phone，车载设备和手持设备间)通信。车联网可以有效提升交通安全，改善交通效率以及丰富人们的出行体验。
在NR(New Radio，新空口)V2x所支持的组播通信中，接收端针对接收到的组播数据进行HARQ(Hybrid Automatic Repeat reQuest,混合自动重传请求)结果反馈时，可以采用以下任一种反馈方式。
第一种反馈方式，组播分组内的所有接收端只在HARQ结果指示未成功接收所述组播数据时，即HARQ结果为NACK(Negative-Acknowledgment，否定应答)时，通过相同资源发送HARQ结果到发送端。
组播分组内的所有接收端基于参考同步定时来同步通过相同资源发送HARQ结果，例如图1A所示。
考虑到组播分组内的接收端的设备可能分布在一个比较广阔的区域内，例如分布在以发送端为中心的预设距离值范围内(其中，预设距离值的大小取决于V2x通信的通信距离)，不同的接收端距离发送端的距离可能相差很大。
由于接收端与发送端之间的距离值的不同，造成了不同的通信时延，不同接收端发送的HARQ结果到达接收端的时间也不同，例如图1B所示。
发送端在相同资源内接收到多个接收端发送的HARQ结果，不同的 HARQ结果对应的时延可能由于相位旋转而互相抵消，使得发送端无法正确识别出其中是否存在NACK反馈信号。
第二种反馈方式，组播分组内的所有接收端无论HARQ结果如何，即无论HARQ结果为ACK(Acknowledgment，确认应答)还是NACK，均通过不同资源反馈HARQ结果。
如果不同接收端采用频分复用的方式反馈各自的HARQ结果，则不同HARQ结果到达发送端的时间也会造成发送端接收反馈信号的准确性下降。
发明内容
为克服相关技术中存在的问题，本公开实施例提供一种传输时间调整方法及装置。
根据本公开实施例的第一方面，提供一种传输时间调整方法，所述方法用于直连链路组播通信中的任一接收端，所述方法包括：
在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
可选地，采用以下方式确定所述第一时间偏移值：
确定接收到所述发送端发送的直连信号的第一定时与所述同步参考定时之间的第二时间偏移值；根据所述第二时间偏移值确定所述第一时间偏移值。
可选地，采用以下方式确定所述第一时间偏移值：
确定所述接收端与所述发送端之间的地理位置距离值；
根据所述距离值确定所述第一时间偏离值。
可选地，所述方法还包括：
接收所述发送端发送的至少包括所述发送端所在的第一地理位置信息的直连控制信息；
所述确定所述接收端与所述发送端之间的距离值，包括：
确定自身所在的第二地理位置信息；
根据所述第一地理位置信息和所述第二地理位置信息，计算所述距离值。
可选地，所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道之前，所述方法还包括：
根据预配置信息确定是否提前发送所述物理层直连反馈信道；
如果根据所述预配置信息确定提前发送所述物理层直连反馈信道，则执行所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道的步骤。
可选地，所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道之前，所述方法还包括：
接收基站发送的下行信息；
根据所述下行信息的指示确定是否提前发送所述物理层直连反馈信道；
如果根据所述下行信息的指示确定提前发送所述物理层直连反馈信道，则执行所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道的步骤。
可选地，所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道之前，所述方法还包括：
接收所述发送端发送的直连控制信息；
根据所述直连控制信息的指示确定是否提前发送所述物理层直连反馈信道；
如果根据所述直连控制信息的指示确定提前发送所述物理层直连反馈信道，则执行所述在同步参考定时之前、且与所述同步参考定时间隔第 一时间偏移值的目标定时开始发送物理层直连通信反馈信道的步骤。
可选地，所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道之前，所述方法还包括：
根据所述物理层直连通信反馈信道承载的反馈信息的类型、所述物理层直连通信反馈信道承载的反馈信息的反馈方式、所述物理层直连通信反馈信道的格式中的至少一项确定是否提前发送所述物理层直连反馈信道；
如果确定需要提前发送所述物理层直连反馈信道，则执行所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道的步骤。
根据本公开实施例的第二方面，提供一种传输时间调整装置，所述方法用于直连链路组播通信中的任一接收端，所述装置包括：
发送模块，被配置为在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
可选地，所述发送模块包括：
第一确定子模块，被配置为确定接收到所述发送端发送的直连信号的第一定时与所述同步参考定时之间的第二时间偏移值；第二确定子模块，被配置为根据所述第二时间偏移值确定所述第一时间偏移值。
可选地，所述发送模块包括：
第三确定子模块，被配置为确定所述接收端与所述发送端之间的地理位置距离值；
第四确定子模块，被配置为根据所述距离值确定所述第一时间偏离值。
可选地，所述装置还包括：
第一接收模块，被配置为接收所述发送端发送的至少包括所述发送端所在的第一地理位置信息的直连控制信息；
所述第三确定子模块包括：
确定单元，被配置为确定自身所在的第二地理位置信息；
计算单元，被配置为根据所述第一地理位置信息和所述第二地理位置信息，计算所述距离值。
可选地，所述装置还包括：
第一确定模块，被配置为根据预配置信息确定是否提前发送所述物理层直连反馈信道；
第一控制模块，被配置为如果根据所述预配置信息确定提前发送所述物理层直连反馈信道，则控制所述发送模块在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
可选地，所述装置还包括：
第二接收模块，被配置为接收基站发送的下行信息；
第二确定模块，被配置为根据所述下行信息的指示确定是否提前发送所述物理层直连反馈信道；
第二控制模块，被配置为如果根据所述下行信息的指示确定提前发送所述物理层直连反馈信道，则控制所述发送模块在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
可选地，所述装置还包括：
第三接收模块，被配置为接收所述发送端发送的直连控制信息；
第三确定模块，被配置为根据所述直连控制信息的指示确定是否提前发送所述物理层直连反馈信道；
第三控制模块，被配置为如果根据所述直连控制信息的指示确定提前发送所述物理层直连反馈信道，则控制所述发送模块在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时开始发送物理层直连通信反馈信道。
可选地，所述装置还包括：
第四确定模块，被配置为根据所述物理层直连通信反馈信道承载的反馈信息的类型、所述物理层直连通信反馈信道承载的反馈信息的反馈方式、所述物理层直连通信反馈信道的格式中的至少一项确定是否提前发送所述物理层直连反馈信道；
第四控制模块，被配置为如果确定需要提前发送所述物理层直连反馈信道，则控制所述发送模块在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
根据本公开实施例的第三方面，提供一种计算机可读存储介质，所述存储介质存储有计算机程序，所述计算机程序用于执行上述第一方面所述的传输时间调整方法。
根据本公开实施例的第四方面，提供一种传输时间调整装置，所述装置用于直连链路组播通信中的任一接收端，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
本公开的实施例提供的技术方案可以包括以下有益效果：
本公开实施例中，直连链路组播通信中的任一接收端可以在目标定时，开始发送物理层直连通信反馈信道。其中，目标定时位于同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值。本公开实施例中，接收端可以不再从同步参考定时开始发送物理层直连通信反馈信道，而是提前从目标定时就开始发送物理层直连通信反馈信道。上述过程中，不同接收端可以对应不同的目标定时，从而可以让发送端同时接收到同一组播分组内的不同接收端发送的物理层直连通信反馈信道，大大减少了同一组播分组内的不同接收端发送的物理层直连通信反馈信道到达发送端的时间差，提高了直连链路组播通信的可靠性。
本公开实施例中，可选地，接收端可以根据接收到发送端发送的直连信号的第一定时与所述同步参考定时之间的第二时间偏移值，确定第一时间偏移值。实现简便，可用性高。
本公开实施例中，可选地，接收端还可以根据自身与发送端之间地理位置的距离值，来确定第一时间偏移值，实现简便，可用性高。
本公开实施例中，发送端可以通过直连控制信息将发送端的第一地理位置信息发送给接收端，接收端根据自身所在的第二地理位置信息和第一地理位置信息，计算得到自身与发送端之间的距离值，可用性高。
本公开实施例中，接收端可以先根据自身的预配置信息来确定是否提前发送物理层直连反馈信道，在确定需要提前发送所述物理层直连反馈信道之后，在从目标定时开始发送所述物理层直连反馈信道。通过上述过程，可以让接收端根据自身的预配置信息来确定是否提前发送物理层直连反馈信道，使得直连链路组播的通信过程更加灵活。
本公开实施例中，接收端还可以根据基站发送的下行信息的指示来确定是否提前发送物理层直连反馈信道，同样使得直连链路组播的通信过程更加灵活。
本公开实施例中，接收端还可以根据发送端发送的直连控制信息的指示来确定是否提前发送物理层直连反馈信道，同样使得直连链路组播的通信过程更加灵活，可用性更高。
本公开实施例中，接收端还可以根据所述物理层直连通信反馈信道承载的反馈信息的类型、所述物理层直连通信反馈信道承载的反馈信息的反馈方式、所述物理层直连通信反馈信道的格式中的至少一项，来确定是否提前发送物理层直连反馈信道，同样使得直连链路组播的通信过程更加灵活，可用性更高。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
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，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。
图1A至1B是相关技术中接收端反馈HARQ结果的场景示意图。
图2是根据一示例性实施例示出的一种传输时间调整场景示意图。
图3是根据一示例性实施例示出的一种传输时间调整方法示意图。
图4是根据一示例性实施例示出的另一种传输时间调整方法示意图。
图5是根据一示例性实施例示出的另一种传输时间调整方法示意图。
图6是根据一示例性实施例示出的另一种传输时间调整方法示意图。
图7是根据一示例性实施例示出的另一种传输时间调整方法示意图。
图8是根据一示例性实施例示出的另一种传输时间调整方法示意图。
图9是根据一示例性实施例示出的另一种传输时间调整方法示意图。
图10是根据一示例性实施例示出的一种传输时间调整装置框图。
图11是根据一示例性实施例示出的另一种传输时间调整装置框图。
图12是根据一示例性实施例示出的另一种传输时间调整装置框图。
图13A至13B是根据一示例性实施例示出的另一种传输时间调整装置框图。
图14是根据一示例性实施例示出的另一种传输时间调整装置框图。
图15是根据一示例性实施例示出的另一种传输时间调整装置框图。
图16是根据一示例性实施例示出的另一种传输时间调整装置框图。
图17是根据一示例性实施例示出的另一种传输时间调整装置框图。
图18是本公开根据一示例性实施例示出的一种传输时间调整装置的一结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下 面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。
在本公开使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开。在本公开和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
本公开实施例提供的传输时间调整方法可以让同一组播分组内不同的接收端发送的物理层直连通信反馈信道经过不同的传输延时后仍然同时到达发送端，提高了直连链路组播通信的可靠性。
本公开实施例提供了一种传输时间调整方法，可以用于直连链路组播通信中的任一接收端，该方法可以包括以下步骤：
在步骤101中，在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
本公开实施例中，同步参考定时(synchronization reference timing)是接收端用于发送直连信号的参考定时。
可选地，同步参考定时可以是来自GNSS(Global Navigation Satellite System,全球导航卫星系统)，例如GPS(Global Positioning System，全球定位系统)信号的定时。或者参考同步定时可以是基站发送的下行同步信 号的定时，下行同步信号可以是PSS(Primary Synchronization Signal，主同步信号)，SSS(Secondary Synchronization Signal，辅同步信号)等。或者参考同步定时还可以是其他用户设备，例如发送端或其他接收端提供的SLSS(Sidelink Synchronization Signal，直连链路同步信号)的同步定时等。参考同步定时也可以来自于用户设备自身的晶振定时。本公开实施例中，接收端可以按照协议规定选择上述其中一个作为自身的同步参考定时。
可选地，第一时间偏移值可以是T C的正整数倍。
其中，T C是NR里信号处理的最小时间单位，如公式1所示：
T C＝1/(Δf max×N f) 公式1
其中，Δf max＝480×10 3Hz，N f＝4096。
可选地，接收端使用物理层直连通信反馈信道反馈是否成功接收到发送端发送的直连数据的HARQ结果。
本步骤中，接收端不再按照同步参考定时来发送物理层直连通信反馈信道到发送端，而是按照各自的第一时间偏移值对同步参考定时进行定时提前，即按照各自的目标定时发送物理层直连通信反馈信道到发送端。
可选地，接收端只在HARQ结果为NACK时进行反馈，从自身对应的目标定时就开始发送物理层直连通信反馈信道到发送端；当HARQ结果为ACK时不进行反馈。不同接收端的NACK反馈使用相同的反馈资源，数据发送端接收所有接收端的混合反馈信号。
例如图2所示，如果存在至少一个接收端没有成功的接收到组播通信，发送端会在同时接收到组播分组内的至少一个接收端发送的物理层直连通信反馈信道。
上述实施例中，不同接收端可以按照各自的信号传播延时进行不同的定时提前，即使用不同的目标定时，从而可以让不同接收端发送的反馈信号同时到达发送端，避免了由于不同的信号传播延时造成混合信号中不同信号由于相位旋转而互相抵消的问题，大大减少了同一组播分组内的不 同接收端发送的物理层直连通信反馈信道到达发送端的时间差，组播分组，提高了直连链路组播通信的可靠性。
在一实施例中，接收端在HARQ结果为ACK时反馈ACK，在HARQ结果为NACK时反馈NACK，不同的接收端使用不同的反馈资源进行反馈。数据发送端分别接收不同接收端发送的反馈。
上述实施例中，不同接收端同样可以按照各自的信号传播延时进行不同的定时提前，即使用不同的目标定时，从而可以让不同接收端发送的反馈信号同时到达发送端。这样当不同接收端使用频域正交复用或者码域正交复用的反馈资源进行传输时，避免了由于不同的信号传播延时造成的正交性的下降，同样可以提高直连链路组播通信的可靠性。
在一实施例中，接收端可以根据接收到的发送端发送的直连信号得到的第一定时与所述同步参考定时之间的第二时间偏移值，确定所述第一时间偏移值。
参照3所示，图3是根据一实施例示出的另一种传输时间调整方法流程图，步骤101可以包括：
在步骤101-11中，确定接收到所述发送端发送的直连信号的第一定时与所述同步参考定时之间的第二时间偏移值。
这里的定时可以是符号定时，slot(时隙)定时，子帧定时或者帧定时等任意一种定时。第二时间偏移值可以小于OFDM符号长度，例如为整数倍的Tc值。
本步骤中，可选地，接收端可以通过检测发送端发送的直连信号的OFDM符号的CP(Cyclic Prefix，循环前缀)所在的时域资源，确定出所述接收端接收到所述发送端发送的所述直连信号的第一定时。可选地，发送端发送的直连信号可以是组播数据。
进一步地，接收端可以确定所述同步参考定时与所述第一定时之间的第二时间偏移值。
在步骤101-12中，根据所述第二时间偏移值确定所述第一时间偏移 值。
可选地，接收端可以在第二时间偏移值的基础上，增加一个固定的时间偏移值，得到第一时间偏移值，或者接收端还可以确定与第二时间偏移值成正比或其他函数关系的第一时间偏移值。本公开对此不限限定。
上述实施例中，接收端可以根据接收到发送端发送的直连信号的第一定时与同步参考定时之间的第二时间偏移值，确定第一时间偏移值。实现简便，可用性高。
在一实施例中，接收端可以根据接收端与发送端之间的地理位置的距离值确定第一时间偏移值。
参照4所示，图4是根据一实施例示出的另一种传输时间调整方法流程图，步骤101可以包括：
在步骤101-21中，确定所述接收端与所述发送端之间地理位置的距离值。
可选地，接收端可以根据发送端的第一地理位置信息和自身所在的第二地理位置信息，计算出所述距离值。
在步骤101-22中，根据所述距离值确定所述第一时间偏移值。
本公开实施例中，接收端确定第一时间偏移值可以如公式2所示：
第一时间偏移值d＝(c 1×s/v)+c 2  公式2
其中，c 1和c 2是常数，s是接收端与发送端之间的距离值，v是光速。
上述实施例中，接收端还可以根据自身与发送端之间的距离值，来确定第一时间偏移值，距离值越大，则第一时间偏移值越大，从而可以确保发送端定时近乎同时的接收到距离该发送端不同距离值的接收端发送的物理层直连通信反馈信道，提高了直连链路组播通信的可靠性。
在一实施例中，参照5所示，图5是根据图4所示的实施例示出的另一种传输时间调整方法流程图，上述方法还可以包括：
在步骤100-1中，接收所述发送端发送的至少包括所述发送端所在的第一地理位置信息的直连控制信息。
本步骤中，发送端可以通过直连控制信息将发送端所在的第一地理位置信息发送给组播分组中的所有接收端。
相应地，上述步骤101-21可以包括：
在步骤101-211中，确定自身所在的第二地理位置信息；
本步骤中，接收端可以根据预先安装的GPS，确定自身的第二地理位置信息。
在步骤101-212中，根据所述第一地理位置信息和所述第二地理位置信息，计算所述距离值。
本步骤中，接收端预先接收到了发送端发送的第一地理位置信息，则接收端可以根据第一地理位置信息和第二地理位置信息，直接计算发送端和接收端之间的距离值。
上述实施例中，发送端可以通过直连控制信息将发送端的第一地理位置信息发送给接收端，接收端根据自身所在的第二地理位置信息和第一地理位置信息，计算得到自身与发送端之间的距离值，可用性高。
在一实施例中，参照6所示，图6是根据一实施例示出的另一种传输时间调整方法流程图，在执行步骤101之前，上述方法还可以包括：
在步骤100-2中，根据预配置信息确定是否提前发送所述物理层直连反馈信道。
例如，该接收端出厂时已经预先配置在设备硬件中的预配置信息指示需要提前提前发送所述物理层直连反馈信道，则发接收端可以继续执行上述步骤101，从目标定时就开始发送所述物理层直连反馈信道。
上述实施例中，可以让接收端根据自身的预配置信息来确定是否提前发送物理层直连反馈信道，使得直连链路组播的通信过程更加灵活。
在一实施例中，参照7所示，图7是根据一实施例示出的另一种传输时间调整方法流程图，在执行步骤101之前，上述方法还可以包括：
在步骤100-3中，接收基站发送的下行信息。
可选地，下行信息包括但不限于基站广播的系统消息，或者基站针 对指定接收端，例如组播分组内的所有接收端发送的RRC(Radio Resource Control，无线资源控制)信令、MAC(Media Access Control Address，媒体访问控制)信令、物理层控制信令等。
在步骤100-4中，根据所述下行信息的指示确定是否提前发送所述物理层直连反馈信道。
本步骤中，接收端根据基站发送的下行信息的指示确定是否提前反射物理层直连反馈信道。
如果基站通过下行信息指示接收端提前发送物理层直连反馈信道，则接收端可以通过步骤101从目标定时开始发送物理层直连反馈信道。
上述实施例中，接收端还可以根据基站发送的下行信息的指示来确定是否提前发送物理层直连反馈信道，同样使得直连链路组播的通信过程更加灵活。
在一实施例中，参照8所示，图8是根据一实施例示出的另一种传输时间调整方法流程图，在执行步骤101之前，上述方法还可以包括：
在步骤100-5中，接收所述发送端发送的直连控制信息。
本公开实施例中，可选地，还可以由发送端在直连控制信息中指示接收端是否提前发送物理层直连反馈信道。
上述步骤100-1与步骤100-5可以合并为同一步骤，即发送端可以在发送的直连控制信息中除了包括自身的第一地理位置信息之外，还可以指示接收端是否提前发送物理层直连反馈信道。
在步骤100-6中，根据所述直连控制信息的指示确定是否提前发送所述物理层直连反馈信道。
接收端接收到发送端发送的直连控制信息之后，根据直连控制信息的指示来确定是否提前发送所述物理层直连反馈信道。
如果发送端通过直连控制信息指示接收端提前发送物理层直连反馈信道，则接收端可以通过步骤101从目标定时开始发送物理层直连反馈信道。
上述实施例中，接收端还可以根据发送端发送的直连控制信息的指示来确定是否提前发送物理层直连反馈信道，同样使得直连链路组播的通信过程更加灵活，可用性更高。
在一实施例中，参照9所示，图9是根据一实施例示出的另一种传输时间调整方法流程图，在执行步骤101之前，上述方法还可以包括：
在步骤100-7中，根据所述物理层直连通信反馈信道承载的反馈信息的类型、所述物理层直连通信反馈信道承载的反馈信息的反馈方式、所述物理层直连通信反馈信道的格式中的至少一项确定是否提前发送所述物理层直连反馈信道。
其中，物理层直连通信反馈信道承载的反馈信息的类型可以是HARQ结果，或者信道质量信息。
物理层直连通信反馈信道承载的反馈信息的反馈方式可以上述第一种反馈方式，例如只在HARQ结果为NACK时进行反馈，或者可以是上述第二种反馈方式，例如无论HARQ结果为NACK还是ACK都进行反馈。
物理层直连通信反馈信道的格式就是PSFCH(Physical Sidelink Feedback Channel，物理直连反馈信道)的格式，可选地，可以是基于序列反馈的格式，也可能是基于传输调制符号的格式。
本步骤中，接收端在根据所述物理层直连通信反馈信道承载的反馈信息的类型确定是否提前发送物理层直连通信反馈信道时，可以在反馈信息的类型为预设类型，例如预设类型HARQ结果且HARQ结果为NACK时，确定需要提前发送物理层直连通信反馈信道。
接收端在根据所述物理层直连通信反馈信道承载的反馈信息的反馈方式确定是否提前发送物理层直连通信反馈信道时，可以在反馈方式为预设反馈方式时，例如预设反馈方式为上述第一种反馈方式时，确定需要提前发送物理层直连通信反馈信道。
接收端在根据所述物理层直连通信反馈信道的格式确定是否提前发送物理层直连通信反馈信道时，可以在PSFCH为预设格式，例如预设格 式为基于序列反馈的格式时，确定需要提前发送物理层直连通信反馈信道。
接收端采用上述至少一种方式确定需要提前发送物理层直连通信反馈信道之后，可以执行步骤101从目标定时开始发送物理层直连反馈信道。
上述实施例中，接收端还可以根据所述物理层直连通信反馈信道承载的反馈信息的类型、所述物理层直连通信反馈信道承载的反馈信息的反馈方式、所述物理层直连通信反馈信道的格式中的至少一项，来确定是否提前发送物理层直连反馈信道，同样使得直连链路组播的通信过程更加灵活，可用性更高。
对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本公开并不受所描述的动作顺序的限制，因为依据本公开，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于可选实施例，所涉及的动作和模块并不一定是本公开所必须的。
与前述应用功能实现方法实施例相对应，本公开还提供了应用功能实现装置的实施例。
参照图10，图10是根据一示例性实施例示出的一种传输时间调整装置框图，所述装置用于直连链路组播通信中的任一接收端，所述装置包括：
发送模块210，被配置为在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
参照图11，图11是根据图10所示的实施例的基础上示出的另一种传输时间调整装置框图，所述发送模块210包括：
第一确定子模块211，被配置为确定接收到所述发送端发送的直连信号的第一定时与所述同步参考定时之间的第二时间偏移值；第二确定子模块212，被配置为根据所述第二时间偏移值确定所述第一时间偏移值。
参照图12，图12是根据图10所示的实施例的基础上示出的另一种传输时间调整装置框图，所述发送模块210包括：
第三确定子模块213，被配置为确定所述接收端与所述发送端之间的地理位置的距离值；
第四确定子模块214，被配置为根据所述距离值确定所述第一时间偏离值。
参照图13A，图13A是根据图12所示的实施例的基础上示出的另一种传输时间调整装置框图，所述装置还包括：
第一接收模块220，被配置为接收所述发送端发送的至少包括所述发送端所在的第一地理位置信息的直连控制信息；
参照图13B，图13B是根据图13A所示的实施例的基础上示出的另一种传输时间调整装置框图，所述第三确定子模块213包括：
确定单元2131，被配置为确定自身所在的第二地理位置信息；
计算单元2132，被配置为根据所述第一地理位置信息和所述第二地理位置信息，计算所述距离值。
参照图14，图14是根据图10所示的实施例的基础上示出的另一种传输时间调整装置框图，所述装置还包括：
第一确定模块230，被配置为根据预配置信息确定是否提前发送所述物理层直连反馈信道；
第一控制模块240，被配置为如果根据所述预配置信息确定提前发送所述物理层直连反馈信道，则控制所述发送模块210在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
参照图15，图15是根据图10所示的实施例的基础上示出的另一种传输时间调整装置框图，所述装置还包括：
第二接收模块250，被配置为接收基站发送的下行信息；
第二确定模块260，被配置为根据所述下行信息的指示确定是否提前发送所述物理层直连反馈信道；
第二控制模块270，被配置为如果根据所述下行信息的指示确定提 前发送所述物理层直连反馈信道，则控制所述发送模块210在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
参照图16，图16是根据图10所示的实施例的基础上示出的另一种传输时间调整装置框图，所述装置还包括：
第三接收模块280，被配置为接收所述发送端发送的直连控制信息；
第三确定模块290，被配置为根据所述直连控制信息的指示确定是否提前发送所述物理层直连反馈信道；
第三控制模块310，被配置为如果根据所述直连控制信息的指示确定提前发送所述物理层直连反馈信道，则控制所述发送模块210在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时开始发送物理层直连通信反馈信道。
参照图17，图17是根据图10所示的实施例的基础上示出的另一种传输时间调整装置框图，所述装置还包括：
第四确定模块320，被配置为根据所述物理层直连通信反馈信道承载的反馈信息的类型、所述物理层直连通信反馈信道承载的反馈信息的反馈方式、所述物理层直连通信反馈信道的格式中的至少一项确定是否提前发送所述物理层直连反馈信道；
第四控制模块330，被配置为如果确定需要提前发送所述物理层直连反馈信道，则控制所述发送模块在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
对于装置实施例而言，由于其基本对应于方法实施例，所以相关之处参见方法实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中上述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择 其中的部分或者全部模块来实现本公开方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
相应地，本公开还提供了一种计算机可读存储介质，所述存储介质存储有计算机程序，所述计算机程序用于执行上述用于接收端侧的任一所述的传输时间调整方法。
相应地，本公开还提供了一种传输时间调整装置，所述装置用于直连链路组播通信中的任一接收端，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道；
其中，所述同步参考定时是所述接收端发送直连信号的参考定时。
如图18所示，图18是根据一示例性实施例示出的一种传输时间调整装置1800的一结构示意图。例如，装置1800可以被提供为接收端，例如车载设备、手持设备等。参照图18，装置1800包括处理组件1822，其进一步包括一个或多个处理器，以及由存储器1832所代表的存储器资源，用于存储可由处理组件1822的执行的指令，例如应用程序。存储器1832中存储的应用程序可以包括一个或一个以上的每一个对应于一组指令的模块。此外，处理组件1822被配置为执行指令，以执行上述传输时间调整方法。
装置1800还可以包括一个电源组件1826被配置为执行装置1800的电源管理，一个有线或无线网络接口1850被配置为将装置1800连接到网络，和一个输入输出(I/O)接口1858。装置1800可以操作基于存储在存储器1832的操作系统，例如Android、IOS、Windows ServerTM，Mac OS XTM，UnixTM，LinuxTM，FreeBSDTM或类似。
其中，当所述存储器1832中的指令由所述处理组件1822执行时， 使得装置1800能够执行上述传输时间调整方法。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本公开旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或者惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (18)

  1. 一种传输时间调整方法，其特征在于，所述方法用于直连链路组播通信中的任一接收端，所述方法包括：
    在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
  2. 根据权利要求1所述的方法，其特征在于，采用以下方式确定所述第一时间偏移值：
    确定接收到所述发送端发送的直连信号的第一定时与所述同步参考定时之间的第二时间偏移值；
    根据所述第二时间偏移值确定所述第一时间偏移值。
  3. 根据权利要求1所述的方法，其特征在于，采用以下方式确定所述第一时间偏移值：
    确定所述接收端与所述发送端之间地理位置的距离值；
    根据所述地理位置距离值确定所述第一时间偏离值。
  4. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    接收所述发送端发送的至少包括所述发送端所在的第一地理位置信息的直连控制信息；
    所述确定所述接收端与所述发送端之间的距离值，包括：
    确定自身所在的第二地理位置信息；
    根据所述第一地理位置信息和所述第二地理位置信息，计算所述距离值。
  5. 根据权利要求1所述的方法，其特征在于，所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道之前，所述方法还包括：
    根据预配置信息确定是否提前发送所述物理层直连反馈信道；
    如果根据所述预配置信息确定提前发送所述物理层直连反馈信道，则 执行所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道的步骤。
  6. 根据权利要求1所述的方法，其特征在于，所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道之前，所述方法还包括：
    接收基站发送的下行信息；
    根据所述下行信息的指示确定是否提前发送所述物理层直连反馈信道；
    如果根据所述下行信息的指示确定提前发送所述物理层直连反馈信道，则执行所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道的步骤。
  7. 根据权利要求1所述的方法，其特征在于，所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道之前，所述方法还包括：
    接收所述发送端发送的直连控制信息；
    根据所述直连控制信息的指示确定是否提前发送所述物理层直连反馈信道；
    如果根据所述直连控制信息的指示确定提前发送所述物理层直连反馈信道，则执行所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时开始发送物理层直连通信反馈信道的步骤。
  8. 根据权利要求1所述的方法，其特征在于，所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道之前，所述方法还包括：
    根据所述物理层直连通信反馈信道承载的反馈信息的类型、所述物理层直连通信反馈信道承载的反馈信息的反馈方式、所述物理层直连通信反馈信道的格式中的至少一项确定是否提前发送所述物理层直连反馈信道；
    如果确定需要提前发送所述物理层直连反馈信道，则执行所述在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时， 开始发送物理层直连通信反馈信道的步骤。
  9. 一种传输时间调整装置，其特征在于，所述方法用于直连链路组播通信中的任一接收端，所述装置包括：
    发送模块，被配置为在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
  10. 根据权利要求9所述的装置，其特征在于，所述发送模块包括：
    第一确定子模块，被配置为确定接收到所述发送端发送的直连信号的第一定时与所述同步参考定时之间的第二时间偏移值；第二确定子模块，被配置为根据所述第二时间偏移值确定所述第一时间偏移值。
  11. 根据权利要求9所述的装置，其特征在于，所述发送模块包括：
    第三确定子模块，被配置为确定所述接收端与所述发送端之间的地理位置距离值；
    第四确定子模块，被配置为根据所述距离值确定所述第一时间偏离值。
  12. 根据权利要求11所述的装置，其特征在于，所述装置还包括：
    第一接收模块，被配置为接收所述发送端发送的至少包括所述发送端所在的第一地理位置信息的直连控制信息；
    所述第三确定子模块包括：
    确定单元，被配置为确定自身所在的第二地理位置信息；
    计算单元，被配置为根据所述第一地理位置信息和所述第二地理位置信息，计算所述距离值。
  13. 根据权利要求9所述的装置，其特征在于，所述装置还包括：
    第一确定模块，被配置为根据预配置信息确定是否提前发送所述物理层直连反馈信道；
    第一控制模块，被配置为如果根据所述预配置信息确定提前发送所述物理层直连反馈信道，则控制所述发送模块在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
  14. 根据权利要求9所述的装置，其特征在于，所述装置还包括：
    第二接收模块，被配置为接收基站发送的下行信息；
    第二确定模块，被配置为根据所述下行信息的指示确定是否提前发送所述物理层直连反馈信道；
    第二控制模块，被配置为如果根据所述下行信息的指示确定提前发送所述物理层直连反馈信道，则控制所述发送模块在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
  15. 根据权利要求9所述的装置，其特征在于，所述装置还包括：
    第三接收模块，被配置为接收所述发送端发送的直连控制信息；
    第三确定模块，被配置为根据所述直连控制信息的指示确定是否提前发送所述物理层直连反馈信道；
    第三控制模块，被配置为如果根据所述直连控制信息的指示确定提前发送所述物理层直连反馈信道，则控制所述发送模块在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时开始发送物理层直连通信反馈信道。
  16. 根据权利要求9所述的装置，其特征在于，所述装置还包括：
    第四确定模块，被配置为根据所述物理层直连通信反馈信道承载的反馈信息的类型、所述物理层直连通信反馈信道承载的反馈信息的反馈方式、所述物理层直连通信反馈信道的格式中的至少一项确定是否提前发送所述物理层直连反馈信道；
    第四控制模块，被配置为如果确定需要提前发送所述物理层直连反馈信道，则控制所述发送模块在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
  17. 一种计算机可读存储介质，其特征在于，所述存储介质存储有计算机程序，所述计算机程序用于执行上述权利要求1-8任一项所述的传输时间调整方法。
  18. 一种传输时间调整装置，其特征在于，所述装置用于直连链路组播通信中的任一接收端，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    在同步参考定时之前、且与所述同步参考定时间隔第一时间偏移值的目标定时，开始发送物理层直连通信反馈信道。
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