WO2022266986A1 - 一种通信方法及信息处理装置 - Google Patents

一种通信方法及信息处理装置 Download PDF

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Publication number
WO2022266986A1
WO2022266986A1 PCT/CN2021/102299 CN2021102299W WO2022266986A1 WO 2022266986 A1 WO2022266986 A1 WO 2022266986A1 CN 2021102299 W CN2021102299 W CN 2021102299W WO 2022266986 A1 WO2022266986 A1 WO 2022266986A1
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Prior art keywords
communication device
sequence
information
sequences
communication
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PCT/CN2021/102299
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English (en)
French (fr)
Inventor
程型清
高磊
倪观军
王键
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华为技术有限公司
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Priority to PCT/CN2021/102299 priority Critical patent/WO2022266986A1/zh
Priority to CN202180099382.6A priority patent/CN117529892A/zh
Priority to EP21946481.5A priority patent/EP4344110A1/en
Publication of WO2022266986A1 publication Critical patent/WO2022266986A1/zh
Priority to US18/392,440 priority patent/US20240129907A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0022—PN, e.g. Kronecker
    • H04J13/0025—M-sequences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0022—PN, e.g. Kronecker
    • H04J13/0029—Gold
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties

Definitions

  • the present application relates to the field of communication technology, provides a communication method and an information processing device, and in particular relates to short-distance wireless communication technology.
  • a communication domain may include a master node and at least two slave nodes, and the master node schedules the slave nodes, so that the mutual transmission of service data between the master node and the slave nodes can be realized.
  • the multicast service can be divided into reliable multicast and unreliable multicast according to whether the receiving node needs to feed back an acknowledgment (ACK) or negative acknowledgment (NACK).
  • Unreliable multicast means that the receiving node does not need to feedback whether it has correctly received the multicast signal sent by the sending node.
  • Reliable multicast means that each receiving node in the group needs to feed back to the sending node whether it has received the multicast signal correctly.
  • the sending node will resend the message as long as it determines that there is a receiving node in the group that has not received the multicast signal correctly. multicast signal. For reliable multicast, each receiving node needs to feedback whether the multicast signal is received correctly.
  • the feedback resource allocated to each receiving node is The same, but the air interface channels passed through are different, and the channel coefficient can also be considered as a part of the resource. From the perspective of the receiving node, the equivalent resource after reception is different). However, if the number of receiving nodes in the group is too large, more feedback information needs to be sent, resulting in the need to occupy more feedback resources.
  • the present application provides a communication method and an information processing device, which are used to improve feedback efficiency as much as possible with limited resources, so as to improve communication performance.
  • the present application provides a communication method, which may include sending first information to a second communication device group including at least two second communication devices, and detecting information from the second communication device group within the first time-frequency resource.
  • Feedback information of at least one second communication device in the second communication device group, the first time-frequency resource is a feedback resource for any second communication device in the second communication device group, and the feedback information is used to indicate that there is at least one unidentified communication device in the second communication device group The second communication device that correctly receives the first information.
  • the method may be executed by a first communication device, and the first communication device may be, for example, a network device in wireless communication, or a master node in a communication domain, or an access point (access point, AP) in a local area wireless communication system, or A module (such as a chip) in a network device, or a module (such as a chip) in a master node, or a module (such as a chip) in an access point, etc.
  • the first communication device can simultaneously detect the feedback information sent by the second communication devices in the second communication device group within the first time-frequency resource, that is, each second communication device in the second communication device group
  • the device uses the same first time-frequency resource to send feedback information to the first communication device, which helps to reduce the resources occupied by the feedback information, especially when the number of second communication devices in the second communication device group is large, it can use Feedback efficiency should be improved as much as possible with limited resources.
  • the second communication device in the second communication device group that does not correctly receive the first information sends feedback information to the first communication device, and the second communication device that correctly receives the feedback information does not send feedback information. In this way, it is helpful to reduce the interference between the feedback information of different second communication devices.
  • the first communication device may send first configuration information used to indicate the first time-frequency resource.
  • the first time-frequency resource for the second communication device in the second communication device group to send feedback information can be indicated, which helps to improve the flexibility of resource scheduling.
  • the first communication device may receive capability information from at least one second communication device in the second communication device group.
  • a more reasonable first time-frequency resource can be determined based on the received capability information, so as to implement capability-based resource configuration.
  • the method further includes the first communication device sending second information, the second information and the first information The same or the second information is generated according to the original information corresponding to the first information.
  • the second communication device By sending the second information, the second communication device that has incorrectly received the first information can reacquire the original information sent by the first communication device, thereby helping to improve the reliability of the second communication device receiving multicast signals. Specifically, if the second information is different from the first information, but the first information and the second information are generated based on the same original information, for example, the original information is processed with a new modulation and coding method to obtain the second information, which can Improve the receiving accuracy of the second communication device as much as possible, and improve the communication performance.
  • the symbol rate used for feedback information transmission is smaller than the symbol rate used for first information transmission.
  • the signal carrying the feedback information consists of one or more sequences.
  • at least one of the one or more sequences is pre-defined or pre-configured, or obtained according to a pre-defined rule, or obtained according to a pre-defined and/or pre-configured parameter according to a pre-defined rule.
  • one or more sequences include any one or more of the m-sequence, the Gold sequence, the preamble sequence, the sequence of the first identification of the second communication device, or the sequence of the identification of the link.
  • a sequence of combinations of items may be the sequence itself of any one or a combination of any of the above sequences.
  • the signal carrying the feedback information includes a sequence obtained based on the m-sequence, since the m-sequence has good autocorrelation and cross-correlation characteristics, the m-sequence can effectively resist interference and noise, thereby improving the detection efficiency of the first communication device. Reliability of Feedback Information.
  • the preamble sequence can enable the first communication device to quickly obtain the power of the signal carrying the feedback information sent by the second communication device, so as to complete the automatic gain control (automatic gain control) as soon as possible.
  • the one or more sequences include a leader sequence, and the leader sequence is located at the starting position of the one or more sequences.
  • sequences include sequences obtained based on m-sequences
  • the m-sequences corresponding to different second communication devices in the second communication device group are different, or the m-sequences corresponding to different second communication device groups are different
  • the shifts of the m-sequences corresponding to the second communication device are different.
  • Different second communication devices in the second communication device group correspond to different m-sequences or m-sequence shifts, that is, different second communication devices in the second communication device group send different signals carrying feedback information.
  • the reverse cancellation caused by the influence of the channel can be reduced, so that the first communication device cannot detect the signal carrying the feedback information; on the other hand, the first communication device can accurately determine which second communication device is The first message was not received correctly.
  • the signal carrying the feedback information includes at least two consecutive m-sequences with the same shift.
  • the first communication device can use one m-sequence delay correlation to detect the existence of feedback information, and the implementation is simple.
  • one or more sequences of signals carrying feedback information include N subsequences, where N is an integer greater than 1; taking any subsequence in the N subsequences as an example, that is, the ith subsequence
  • the i-th subsequences corresponding to different second communication devices in the second communication device group have the same length and the same starting position in one or more sequences, and the i-th sub-sequence satisfies A i ⁇ b i , b i is the i-th complex number in the complex number sequence of length N obtained according to the second identification of the second communication device
  • a i is the i-th public complex number sequence in the set of public complex number sequences, different in the second communication device group
  • the sets of public complex sequences corresponding to the second communication devices of are the same.
  • the i-th subsequences corresponding to different second communication devices in the second communication device group By using the i-th subsequences corresponding to different second communication devices in the second communication device group to have the same length and the same starting position in one or more sequences, it is possible to realize the bearer feedback information sent by different second communication devices
  • the i-th subsequence in the signal satisfying A i ⁇ b i is aligned.
  • the second identifiers of different second communication devices are different, at least one complex number in the complex sequence of length N corresponding to different second communication devices is different, which helps to avoid reverse cancellation in a specific superposition mode from causing the first A communication device cannot detect feedback information.
  • the first communication device may further send third configuration information, where the third configuration information is used to indicate a value of N.
  • the third configuration information By sending the third configuration information to indicate the value of the length N of the complex sequence, it is helpful to avoid waste of resources caused by a signal carrying feedback information being too long. Moreover, by rationally configuring the value of N by the first communication device, it is possible to realize that different second identifiers correspond to different complex number sequences of length N, so that different second communication devices correspond to different complex number sequences of length N.
  • the public complex number sequence set is predefined or preconfigured.
  • the ith common complex number sequence may consist of a phase-modulated first bit sequence, or may consist of a preamble sequence and a phase-modulated first bit sequence; wherein the first bit sequence includes an m-sequence , a Gold sequence, or at least one of a sequence of identifiers of the second communication device group.
  • the i-th common complex number sequence is composed of a preamble sequence and a phase-modulated first bit sequence
  • the preamble sequence is located before the phase-modulated first bit sequence. It can also be understood that the i-th common complex number sequence is sequentially composed of a predefined preamble sequence and a phase-modulated first bit sequence.
  • the first communication device may further send second configuration information, where the second configuration information includes information about a second identification of at least one second communication device in the second communication device group.
  • the first communication device may configure a second identifier for at least one second communication device in the second communication device group. Further, the first communication device may configure different second identifiers for different second communication devices through the second configuration information. In this way, it is helpful to reduce the reverse cancellation caused by the influence of the channel, so that the first communication device cannot detect the signal carrying the feedback information; moreover, since different second communication devices correspond to different second identifiers, it is possible to make the first communication device It is accurately determined which second communication device has not correctly received the first information.
  • one or more sequences corresponding to different second communication devices in the second communication device group are the same.
  • one or more sequences include sequences obtained based on m-sequences, and the m-sequences corresponding to different second communication devices in the second communication device group are the same; or, different second communication devices in the second communication device group The shift of the m-sequence corresponding to the device is the same.
  • the method further includes the first communication device sending first indication information, where the first indication information is used to indicate at least one sequence in the one or more sequences corresponding to the second communication device.
  • the first indication information is further used to indicate the corresponding sequence obtained by the second communication device based on the m-sequence or a shift of the m-sequence.
  • the present application provides a communication method, which may include detecting the first information, and if the first information is not received correctly, sending feedback information to the first communication device within the first time-frequency resource, the first time-frequency
  • the resource is a feedback resource for any second communication device in the second communication device group including at least two second communication devices, that is, the second communication device can send feedback information in the first time-frequency resource, and the feedback information is used to indicate The second communication device that the second communication device belonging to the second communication device group did not correctly receive the first information.
  • the method may be executed by a second communication device, and the second communication device may be, for example, a terminal device in wireless communication, or a slave node in a communication domain, or a station in a wireless communication system, or a module (such as a chip) in a terminal device, Or a module (such as a chip) in a slave node, or a module (such as a chip) in a station, etc.
  • the second communication device may be, for example, a terminal device in wireless communication, or a slave node in a communication domain, or a station in a wireless communication system, or a module (such as a chip) in a terminal device, Or a module (such as a chip) in a slave node, or a module (such as a chip) in a station, etc.
  • each second communication device in the second communication device group uses the same first time-frequency resource to send feedback information to the first communication device, which helps to reduce the resources occupied by the feedback information, especially when the second communication device
  • limited resources can be utilized to improve feedback efficiency as much as possible.
  • the second communication device in the second communication device group that does not correctly receive the first information sends feedback information to the first communication device, and the second communication device that correctly receives the feedback information does not send feedback information. In this way, it is helpful to reduce the interference between the feedback information of different second communication devices.
  • the method may further include that the second communication device receives first configuration information from the first communication device, where the first configuration information is used to indicate the first time-frequency resource.
  • the second communication device can obtain the first time-frequency resource for sending feedback information, which helps to improve the flexibility of resource scheduling.
  • the method may further include the second communication device sending capability information of the second communication device to the first communication device.
  • the first communication device can determine a more reasonable first time-frequency resource based on the capability information, and implement capability-based resource configuration.
  • the method may further include that the second communication device receives second information from the first communication device, where the second information is the same as the first information, or the second information is the same as that corresponding to the first information. original information.
  • the second communication device By receiving the second information, the second communication device that has incorrectly received the first information can reacquire the original information sent by the first communication device, thereby helping to improve the reliability of the second communication device in receiving multicast signals. Specifically, if the second information is different from the first information, but the first information and the second information are generated based on the same original information, for example, a new modulation and coding method is used to process the original information to obtain the second information, thus The receiving accuracy of the second communication device can be improved as much as possible, and the communication performance can be improved.
  • the symbol rate used for feedback information transmission is smaller than the symbol rate used for first information transmission.
  • the signal carrying the feedback information consists of one or more sequences.
  • at least one of the one or more sequences is pre-defined or pre-configured, or obtained according to a pre-defined rule, or obtained according to a pre-defined and/or pre-configured parameter according to a pre-defined rule.
  • one or more sequences include any one or more of the m-sequence, the Gold sequence, the preamble sequence, the sequence of the first identification of the second communication device, or the sequence of the identification of the link.
  • a sequence of combinations of items may be the sequence itself of any one or a combination of any of the above sequences.
  • the signal carrying the feedback information includes a sequence obtained based on the m-sequence, since the m-sequence has good autocorrelation and cross-correlation characteristics, the m-sequence can effectively resist interference and noise, thereby improving the detection efficiency of the first communication device. Reliability of Feedback Information.
  • the preamble sequence can enable the first communication device to quickly obtain the power of the signal carrying the feedback information sent by the second communication device, so as to complete the adjustment of AGC and others as soon as possible. Functions, such as determining the frequency used by the symbol at the sending end, timing estimation, etc.
  • the one or more sequences include a leader sequence, and the leader sequence is located at the starting position of the one or more sequences.
  • At least one of the one or more sequences corresponding to different second communication devices in the second communication device group is different.
  • m-sequences corresponding to different second communication devices in the second communication device group are different, or, different second communication devices in the second communication device group The shifts of the m-sequences corresponding to the devices are different.
  • Different second communication devices in the second communication device group correspond to different m-sequences or m-sequence shifts, that is, different second communication devices in the second communication device group send different signals carrying feedback information.
  • the reverse cancellation caused by the influence of the channel can be reduced, so that the first communication device cannot detect the signal carrying the feedback information; on the other hand, the first communication device can accurately determine which second communication device is The first message was not received correctly.
  • the signal carrying the feedback information includes at least two consecutive m-sequences with the same shift.
  • the first communication device can use one m-sequence delay correlation to detect the existence of feedback information, and the implementation is simple.
  • one or more sequences include N subsequences, and N is an integer greater than 1; taking any subsequence in the N subsequences as an example, that is, taking the i-th subsequence as an example, the second The i-th subsequences corresponding to different second communication devices in the communication device group have the same length and the same starting position in one or more sequences, the i-th sub-sequence satisfies A i ⁇ b i , and b i is based on the The i-th complex number in the complex number sequence whose length is N obtained by the second identification of the second communication device, A i is the i-th public complex number sequence in the set of public complex number sequences, and the different second communication devices in the second communication device group The corresponding sets of public complex sequences are the same.
  • the i-th subsequences corresponding to different second communication devices in the second communication device group By using the i-th subsequences corresponding to different second communication devices in the second communication device group to have the same length and the same starting position in one or more sequences, it is possible to realize the bearer feedback information sent by different second communication devices
  • the i-th subsequence in the signal satisfying A i ⁇ b i is aligned.
  • the second identifiers of different second communication devices are different, at least one complex number in the complex sequence of length N corresponding to different second communication devices is different, which helps to avoid reverse cancellation in a specific superposition mode from causing the first A communication device cannot detect feedback information.
  • the public complex number sequence set is predefined or configured.
  • the ith common complex number sequence may consist of a phase-modulated first bit sequence, or may consist of a preamble sequence and a phase-modulated first bit sequence; wherein the first bit sequence includes an m-sequence , a Gold sequence, or at least one of a sequence of identifiers of the second communication device group.
  • the i-th common complex number sequence is composed of a preamble sequence and a phase-modulated first bit sequence
  • the preamble sequence is located before the phase-modulated first bit sequence. It can also be understood that the i-th common complex number sequence is sequentially composed of a predefined preamble sequence and a phase-modulated first bit sequence.
  • the method may further include that the second communication device receives second configuration information from the first communication device, where the second configuration information includes information of a second identifier of the second communication device.
  • the second communication device can obtain the second identification.
  • different second communication devices in the second communication device group obtain different second identities, it is helpful to reduce the reverse cancellation caused by the influence of the channel so that the first communication device cannot detect the signal carrying the feedback information; and, because Different second communication devices correspond to different second identifiers, so that the first communication device can accurately determine which second communication device has not received the first information correctly.
  • the second communication device may also randomly generate the second identifier of the second communication device.
  • the method further includes that the second communication device receives third configuration information from the first communication device, where the third configuration information is used to indicate a value of N.
  • the second communication device can obtain the length N indicating the complex sequence, which helps to avoid waste of resources caused by too long signals carrying feedback information. Moreover, by rationally configuring the value of N by the first communication device, it is possible to realize that different second identifiers correspond to different complex number sequences of length N, so that different second communication devices correspond to different complex number sequences of length N.
  • one or more sequences corresponding to different second communication devices in the second communication device group are the same.
  • the m-sequences corresponding to different second communication devices in the second communication device group are the same, or, the different second communication devices in the second communication device group
  • the shift of the m-sequence corresponding to the device is the same.
  • the method further includes the second communication device receiving first indication information from the first communication device, where the first indication information is used to indicate at least one of the one or more sequences corresponding to the second communication device sequence.
  • At least one sequence includes a sequence obtained based on the m-sequence
  • the first indication information is further used to indicate the corresponding sequence obtained by the second communication device based on the m-sequence or a shift of the m-sequence.
  • the present application provides a communication device, which is used to implement the above first aspect or any one of the methods in the first aspect, or to implement the above second aspect or any one of the second aspects
  • the method including corresponding functional modules, are respectively used to realize the steps in the above method.
  • the functions may be implemented by hardware, or may be implemented by executing corresponding software through hardware.
  • Hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device may be a first communication device (such as a network device), or a component applicable to the first communication device, such as a chip or a chip system or a circuit.
  • the communication device may include: a transceiver and a processor.
  • the processor may be configured to support the communication device to perform the corresponding functions of the above-mentioned first communication device, and the transceiver is used to support communication between the communication device and other communication devices (such as the second communication device).
  • the transceiver may be an independent receiver, an independent transmitter, a transceiver integrating transceiver functions, or an interface circuit.
  • the communication device may further include a memory, which may be coupled with the processor, and store necessary program instructions and data of the communication device.
  • the communication device may be an information processing device, or the communication device includes an information processing device.
  • the transceiver is used to send the first information to a second communication device group including at least two second communication devices
  • the processor is used to detect a message from at least one second communication device in the second communication device group within the first time-frequency resource.
  • Feedback information the first time-frequency resource is a feedback resource for any second communication device in the second communication device group, and the feedback information is used to indicate that there is at least one second communication device in the second communication device group that has not received the first information correctly 2.
  • the transceiver is further configured to send first configuration information used to indicate the first time-frequency resource.
  • the transceiver is further configured to receive capability information from at least one second communication device in the second communication device group.
  • the transceiver is further configured to send second information, where the second information is the same as the first information, or The second information is generated according to the original information corresponding to the first information.
  • the symbol rate used for feedback information transmission is smaller than the symbol rate used for first information transmission.
  • the signal carrying the feedback information consists of one or more sequences.
  • at least one of the one or more sequences is pre-defined or pre-configured, or obtained according to a pre-defined rule, or obtained according to a pre-defined and/or pre-configured parameter according to a pre-defined rule.
  • one or more sequences include any one or more of the m-sequence, the Gold sequence, the preamble sequence, the sequence of the first identification of the second communication device, or the sequence of the identification of the link.
  • the one or more sequences include a leader sequence, and the leader sequence is located at the starting position of the one or more sequences.
  • sequences include sequences obtained based on m-sequences
  • the m-sequences corresponding to different second communication devices in the second communication device group are different, or the m-sequences corresponding to different second communication device groups are different
  • the shifts of the m-sequences corresponding to the second communication device are different.
  • the signal carrying the feedback information includes at least two consecutive m-sequences with the same shift.
  • one or more sequences of signals carrying feedback information include N subsequences, where N is an integer greater than 1; taking any subsequence in the N subsequences as an example, that is, the ith subsequence
  • the i-th subsequences corresponding to different second communication devices in the second communication device group have the same length and the same starting position in one or more sequences, and the i-th sub-sequence satisfies A i ⁇ b i , b i is the i-th complex number in the complex number sequence of length N obtained according to the second identification of the second communication device
  • a i is the i-th public complex number sequence in the set of public complex number sequences, different in the second communication device group
  • the sets of public complex sequences corresponding to the second communication devices of are the same.
  • the transceiver is further configured to send third configuration information, where the third configuration information is used to indicate N.
  • the i-th public complex number sequence is a predefined or preconfigured public complex number sequence. It can also be understood that the public complex sequence set is predefined or configured.
  • the ith common complex number sequence may consist of a phase-modulated first bit sequence, or may consist of a preamble sequence and a phase-modulated first bit sequence; wherein the first bit sequence includes an m-sequence , a Gold sequence, or at least one of a sequence of identifiers of the second communication device group.
  • the i-th common complex number sequence is composed of a preamble sequence and a phase-modulated first bit sequence
  • the preamble sequence is located before the phase-modulated first bit sequence. It can also be understood that the i-th common complex number sequence is sequentially composed of a predefined preamble sequence and a phase-modulated first bit sequence.
  • the transceiver is further configured to send second configuration information, where the second configuration information includes information about a second identification of at least one second communication device in the second communication device group.
  • one or more sequences corresponding to different second communication devices in the second communication device group are the same.
  • one or more sequences include sequences obtained based on m-sequences, and the m-sequences corresponding to different second communication devices in the second communication device group are the same; or, different second communication devices in the second communication device group The shift of the m-sequence corresponding to the device is the same.
  • the transceiver is further configured to send first indication information, where the first indication information is used to indicate at least one sequence in the one or more sequences corresponding to the second communication device.
  • the first indication information is further used to indicate the corresponding sequence obtained by the second communication device based on the m-sequence or a shift of the m-sequence.
  • the communication device may be a second communication device (such as a terminal device), or a module that can be used in the second communication device, such as a chip or a chip system or a circuit.
  • the communication device may include: a transceiver and a processor.
  • the processor may be configured to support the communication device to perform the corresponding functions of the above-mentioned second communication device, and the transceiver is used to support communication between the communication device and other communication devices (such as the first communication device).
  • the transceiver may be an independent receiver, an independent transmitter, a transceiver integrating transceiver functions, or an interface circuit.
  • the communication device may further include a memory, which may be coupled with the processor, and store necessary program instructions and data of the communication device.
  • the processor is used to detect the first information; if the first information is not received correctly, the transceiver is used to send feedback information to the first communication device in the first time-frequency resource, the first time-frequency resource is used to include at least two The feedback resource of any second communication device in the second communication device group of the second communication device, the feedback information is used to indicate that the second communication device belonging to the second communication device group has not correctly received the first information.
  • the transceiver is further configured to receive first configuration information from the first communication device, where the first configuration information is used to indicate the first time-frequency resource.
  • the transceiver is further configured to send capability information of the second communication device to the first communication device.
  • the transceiver is further configured to receive second information from the first communication device, where the second information is the same as the first information, or the second information corresponds to the same original information as the first information.
  • the symbol rate used for feedback information transmission is smaller than the symbol rate used for first information transmission.
  • the signal carrying the feedback information consists of one or more sequences.
  • at least one of the one or more sequences is pre-defined or pre-configured, or obtained according to a pre-defined rule, or obtained according to a pre-defined and/or pre-configured parameter according to a pre-defined rule.
  • the one or more sequences include any one or more of the sequences based on the m-sequence, the Gold sequence, the preamble sequence, the sequence of the first identification of the second communication device, or the sequence of the identification of the link.
  • the one or more sequences include a leader sequence, and the leader sequence is located at the starting position of the one or more sequences.
  • At least one of the one or more sequences corresponding to different second communication devices in the second communication device group is different.
  • sequences include sequences obtained based on m-sequences
  • the m-sequences corresponding to different second communication devices in the second communication device group are different, or the m-sequences corresponding to different second communication device groups are different
  • the shifts of the m-sequences corresponding to the second communication device are different.
  • one or more sequences include N subsequences, and N is an integer greater than 1; taking any subsequence in the N subsequences as an example, that is, taking the i-th subsequence as an example, the second The i-th subsequences corresponding to different second communication devices in the communication device group have the same length and the same starting position in one or more sequences, the i-th sub-sequence satisfies A i ⁇ b i , and b i is based on the The i-th complex number in the complex number sequence whose length is N obtained by the second identification of the second communication device, A i is the i-th public complex number sequence in the set of public complex number sequences, and the different second communication devices in the second communication device group The corresponding sets of public complex sequences are the same.
  • the public complex number sequence set is predefined or configured.
  • the ith common complex number sequence may consist of a phase-modulated first bit sequence, or may consist of a preamble sequence and a phase-modulated first bit sequence; wherein the first bit sequence includes an m-sequence , a Gold sequence, or at least one of a sequence of identifiers of the second communication device group.
  • the i-th common complex number sequence is composed of a preamble sequence and a phase-modulated first bit sequence
  • the preamble sequence is located before the phase-modulated first bit sequence. It can also be understood that the i-th common complex number sequence is sequentially composed of a predefined preamble sequence and a phase-modulated first bit sequence.
  • the transceiver is further configured to receive second configuration information from the first communication device, where the second configuration information includes information about a second identifier of the second communication device.
  • the processor is configured to randomly generate the second identifier of the second communication device.
  • the transceiver is further configured to receive third configuration information from the first communication device, where the third configuration information is used to indicate a value of N.
  • one or more sequences corresponding to different second communication devices in the second communication device group are the same.
  • sequences include sequences obtained based on m-sequences
  • the m-sequences corresponding to different second communication devices in the second communication device group are the same, or the m-sequences corresponding to different second communication device groups are different
  • the shifts of the m-sequences corresponding to the second communication device are the same.
  • the transceiver is further configured to receive first indication information from the first communication device, where the first indication information is used to indicate at least one sequence in the one or more sequences corresponding to the second communication device.
  • At least one sequence includes a sequence obtained based on the m-sequence
  • the first indication information is further used to indicate the corresponding sequence obtained by the second communication device based on the m-sequence or a shift of the m-sequence.
  • the present application provides a communication device, which is used to implement the above first aspect or any one of the methods in the first aspect, or to implement the above second aspect or any one of the second aspects
  • the method including corresponding functional modules, are respectively used to realize the steps in the above method.
  • the functions may be implemented by hardware, or may be implemented by executing corresponding software through hardware.
  • Hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device may also be a first communication device (such as a network device), and the communication device may include a transceiver module and a processing module, and these modules may perform corresponding operations of the first communication device in the above method examples. Function.
  • the communication device may be an information processing device, or the communication device includes an information processing device.
  • the transceiver module is used to send the first information to the second communication device group including at least two second communication devices
  • the processing module is used to detect at least one second communication from the second communication device group in the first time-frequency resource.
  • the feedback information of the device, the first time-frequency resource is a feedback resource for any second communication device in the second communication device group, and the feedback information is used to indicate that at least one of the second communication device groups has not received the first information correctly the second communication device.
  • the transceiver module is further configured to send first configuration information used to indicate the first time-frequency resource.
  • the transceiving module is further configured to receive capability information from at least one second communication device in the second communication device group.
  • the transceiver module is further configured to send second information, where the second information is the same as the first information, or The second information is generated according to the original information corresponding to the first information.
  • the symbol rate used for feedback information transmission is smaller than the symbol rate used for first information transmission.
  • the signal carrying the feedback information consists of one or more sequences.
  • at least one of the one or more sequences is pre-defined or pre-configured, or obtained according to a pre-defined rule, or obtained according to a pre-defined and/or pre-configured parameter according to a pre-defined rule.
  • one or more sequences include any one or more of the m-sequence, the Gold sequence, the preamble sequence, the sequence of the first identification of the second communication device, or the sequence of the identification of the link.
  • the one or more sequences include a leader sequence, and the leader sequence is located at the starting position of the one or more sequences.
  • sequences include sequences obtained based on m-sequences
  • the m-sequences corresponding to different second communication devices in the second communication device group are different, or the m-sequences corresponding to different second communication device groups are different
  • the shifts of the m-sequences corresponding to the second communication device are different.
  • the signal carrying the feedback information includes at least two consecutive m-sequences with the same shift.
  • the first communication device can use one m-sequence delay correlation to detect the existence of feedback information, and the implementation is simple.
  • one or more sequences of signals carrying feedback information include N subsequences, where N is an integer greater than 1; taking any subsequence in the N subsequences as an example, that is, the ith subsequence
  • the i-th subsequences corresponding to different second communication devices in the second communication device group have the same length and the same starting position in one or more sequences, and the i-th sub-sequence satisfies A i ⁇ b i , b i is the i-th complex number in the complex number sequence of length N obtained according to the second identification of the second communication device
  • a i is the i-th public complex number sequence in the set of public complex number sequences, different in the second communication device group
  • the sets of public complex sequences corresponding to the second communication devices of are the same.
  • the transceiver module is further configured to send third configuration information, where the third configuration information is used to indicate N.
  • the public complex number sequence set is predefined or configured.
  • the ith common complex number sequence may consist of a phase-modulated first bit sequence, or may consist of a preamble sequence and a phase-modulated first bit sequence; wherein the first bit sequence includes an m-sequence , a Gold sequence, or at least one of a sequence of identifiers of the second communication device group.
  • the i-th common complex number sequence is composed of a preamble sequence and a phase-modulated first bit sequence
  • the preamble sequence is located before the phase-modulated first bit sequence. It can also be understood that the i-th common complex number sequence is sequentially composed of a predefined preamble sequence and a phase-modulated first bit sequence.
  • the transceiver module is further configured to send second configuration information, where the second configuration information includes information of a second identification of at least one second communication device in the second communication device group.
  • one or more sequences corresponding to different second communication devices in the second communication device group are the same.
  • one or more sequences are obtained based on the m-sequence, and the m-sequences corresponding to different second communication devices in the second communication device group are the same; or, different second communication devices in the second communication device group The corresponding m-sequences are shifted the same.
  • the transceiver module is further configured to send first indication information, where the first indication information is used to indicate at least one of the one or more sequences corresponding to the second communication device.
  • the first indication information is used to indicate the corresponding sequence obtained by the second communication device based on the m-sequence or a shift of the m-sequence.
  • the communication device may be a second communication device (such as a terminal device), and the communication device may include a processing module and a transceiver module, and these modules may perform corresponding functions of the second communication device in the above method examples Function.
  • the transceiver module is used to detect the first information; the transceiver module cooperates with the processing module, and is also used to send feedback information in the first time-frequency resource if the first information is not received correctly, and the first time-frequency resource is used for Feedback resources of any second communication device in the second communication device group including at least two second communication devices, the feedback information is used to indicate that there is at least one second communication in the second communication device group that has not correctly received the first information device.
  • the transceiver module is further configured to receive first configuration information from the first communication device, where the first configuration information is used to indicate the first time-frequency resource.
  • the transceiver module is also configured to send capability information.
  • the transceiver module is further configured to receive second information from the first communication device, where the second information is the same as the first information, or the second information corresponds to the same original information as the first information.
  • the symbol rate used for feedback information transmission is smaller than the symbol rate used for first information transmission.
  • the signal carrying the feedback information consists of one or more sequences.
  • at least one of the one or more sequences is pre-defined or pre-configured, or obtained according to a pre-defined rule, or obtained according to a pre-defined and/or pre-configured parameter according to a pre-defined rule.
  • the one or more sequences include any one or more of the sequences based on the m-sequence, the Gold sequence, the preamble sequence, the sequence of the first identification of the second communication device, or the sequence of the identification of the link.
  • the one or more sequences include a leader sequence, and the leader sequence is located at the starting position of the one or more sequences.
  • At least one of the one or more sequences corresponding to different second communication devices in the second communication device group is different.
  • sequences include sequences obtained based on m-sequences
  • the m-sequences corresponding to different second communication devices in the second communication device group are different, or the m-sequences corresponding to different second communication device groups are different
  • the shifts of the m-sequences corresponding to the second communication device are different.
  • one or more sequences include N subsequences, and N is an integer greater than 1; taking any subsequence in the N subsequences as an example, that is, taking the i-th subsequence as an example, the second The i-th subsequences corresponding to different second communication devices in the communication device group have the same length and the same starting position in one or more sequences, the i-th sub-sequence satisfies A i ⁇ b i , and b i is based on the The i-th complex number in the complex number sequence whose length is N obtained by the second identification of the second communication device, A i is the i-th public complex number sequence in the set of public complex number sequences, and the different second communication devices in the second communication device group The corresponding sets of public complex sequences are the same.
  • the public complex number sequence set is predefined or configured.
  • the ith common complex number sequence may consist of a phase-modulated first bit sequence, or may consist of a preamble sequence and a phase-modulated first bit sequence; wherein the first bit sequence includes an m-sequence , a Gold sequence, or at least one of a sequence of identifiers of the second communication device group.
  • the i-th common complex number sequence is composed of a preamble sequence and a phase-modulated first bit sequence
  • the preamble sequence is located before the phase-modulated first bit sequence. It can also be understood that the i-th common complex number sequence is sequentially composed of a predefined preamble sequence and a phase-modulated first bit sequence.
  • the transceiver module is further configured to receive second configuration information from the first communication device, where the second configuration information includes information of a second identification of the second communication device.
  • the processing module is configured to randomly generate the second identifier of the second communication device.
  • the transceiver module is further configured to receive third configuration information from the first communication device, where the third configuration information is used to indicate a value of N.
  • one or more sequences corresponding to different second communication devices in the second communication device group are the same.
  • sequences include sequences obtained based on m-sequences
  • the m-sequences corresponding to different second communication devices in the second communication device group are the same, or the m-sequences corresponding to different second communication device groups are different
  • the shifts of the m-sequences corresponding to the second communication device are the same.
  • the transceiving module is further configured to receive first indication information from the first communication device, where the first indication information is used to indicate at least one sequence in the one or more sequences corresponding to the second communication device.
  • At least one sequence includes a sequence obtained based on the m-sequence
  • the first indication information is further used to indicate the corresponding sequence obtained by the second communication device based on the m-sequence or a shift of the m-sequence.
  • the present application provides a communication system, where the communication system includes a first communication device and a group of second communication devices.
  • the first communication device can be used to implement the first aspect or any method in the first aspect
  • the second communication device in the second communication device group can be used to implement the second aspect or the method in the second aspect.
  • the communication system may include master nodes and slave nodes.
  • the master node may be used to execute the first aspect or any method in the first aspect
  • the slave node may be used to execute the second aspect or any method in the second aspect.
  • the present application provides a chip, the chip includes at least one processor and an interface circuit, and the chip is used to implement the above-mentioned first aspect or any one of the methods in the first aspect, or to implement the above-mentioned second aspect or Any one of the methods in the second aspect.
  • the present application provides a terminal device, which may include the fourth aspect or any one of the communication devices in the fourth aspect, or may also include the fifth aspect or any one of the fifth aspect communication device.
  • the present application provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is executed by a communication device, the communication device executes the above-mentioned first aspect or the first aspect.
  • the method in any possible implementation manner of the first aspect, or causing the communication device to execute the above second aspect or the method in any possible implementation manner of the second aspect.
  • the present application provides a computer program product, the computer program product includes a computer program or an instruction, and when the computer program or instruction is executed by a communication device, the communication device executes any of the above-mentioned first aspect or the first aspect.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by the present application.
  • Figure 2a is a schematic diagram of a possible application scenario provided by the present application.
  • FIG. 2b is a schematic diagram of a wireless communication scenario in a smart terminal provided by the present application.
  • FIG. 2c is a schematic diagram of a local area wireless communication scenario provided by the present application.
  • FIG. 2d is a schematic diagram of a sidelink communication scenario provided by the present application.
  • FIG. 3 is a schematic method flow diagram of a communication method provided by the present application.
  • FIG. 4 is a schematic diagram of the positional relationship between a preamble sequence and an m-sequence corresponding to one or more signals carrying feedback information provided by the present application;
  • FIG. 5 is a schematic flowchart of a method for obtaining N subsequences by a second communication device provided in the present application
  • FIG. 6 is a schematic flowchart of a method for a second communication device to obtain a first time-frequency resource provided by the present application
  • FIG. 7 is a schematic structural diagram of a communication device provided by the present application.
  • FIG. 8 is a schematic structural diagram of a communication device provided by the present application.
  • FIG. 1 is a schematic structural diagram of an applicable communication system of the present application.
  • the communication system may include a master node and at least one slave node.
  • Figure 1 is an example of including two slave nodes.
  • the master node and each slave node can communicate with each other in a wireless or wired manner.
  • the master node and the slave node can be understood as two types of communication devices with communication functions that are logically distinguished.
  • the master node and the slave nodes belong to the same communication domain.
  • the master node can manage resources in the communication domain (such as time domain resources, frequency domain resources, etc.), and has the function of scheduling resources for communication links between the master node and the slave nodes.
  • the slave node obeys the scheduling of the master node, and uses the time-frequency resources allocated by the master node to communicate with the master node.
  • the master node can send the same information to multiple slave nodes, that is, multicast information.
  • the information transmitted between the master node and the slave node may include service data (such as multicast data), signaling and some signals.
  • the signaling may include, for example, physical layer signaling or high layer signaling.
  • the signal may include, for example, a signal with one or more functions such as a synchronization signal, a reference signal, a channel estimation signal, a channel detection signal, a phase tracking signal, and a positioning signal.
  • a wide area wireless communication scenario for example, it may include communication between a network device and multiple terminal devices.
  • a local area wireless communication scenario for example, it can include communication between an access point (access point, AP) and multiple stations (station).
  • AP access point
  • stations stations
  • the wireless communication scene in the car for example, it can include the connection between the car machine (such as the car cockpit domain controller (CDC)) and the speaker, microphone, display screen, mobile phone, etc.
  • the car machine such as the car cockpit domain controller (CDC)
  • CDC car cockpit domain controller
  • Another example is the communication between mobile phones and wearable devices such as earphones; another example is the communication between keyless entry and start systems and mobile phone keys and car keys.
  • FIG. 2a is a schematic diagram of a possible application scenario provided by this application.
  • This application scenario includes one network device and two terminal devices as an example.
  • Terminal devices communicate with network devices wirelessly.
  • a network device can act as a master node, and two terminal devices act as slave nodes.
  • the network device can allocate time-frequency resources to the terminal device, and the terminal device obeys the scheduling of the network device.
  • a network device is an access device for a terminal device to access the communication system in a wireless manner, and can provide a wireless communication function for the terminal device. It can be base station (base station), evolved base station (evolved NodeB, eNodeB), transmission (transmission reception point, TRP), next generation base station (next generation NodeB, gNB) in 5G communication system, future communication
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.
  • a terminal device may also be called a terminal, a user equipment (user equipment, UE), a mobile station, a mobile terminal, and the like.
  • Terminal devices can be mobile phones, tablet computers, computers with wireless transceiver functions, virtual reality terminal devices, augmented reality terminal devices, wireless terminals in industrial control, wireless terminals in unmanned driving, wireless terminals in remote surgery, smart grids Wireless terminals in transportation security, wireless terminals in smart cities, wireless terminals in smart homes, etc. This application does not limit the specific technology and specific equipment form adopted by the terminal equipment.
  • FIG. 2 b is a schematic diagram of a wireless communication scenario in an intelligent terminal provided by the present application, that is, another possible application scenario.
  • a smart terminal may be a vehicle, for example, and the vehicle includes but is not limited to an unmanned vehicle, a smart vehicle (such as an automated guided vehicle (AGV)), an electric vehicle, a digital vehicle, and a smart manufacturing vehicle.
  • AGV automated guided vehicle
  • the mobile phone, headset and wearable device belong to a communication domain, such as the first communication domain, in which the mobile phone is used as the master node, and the headset and wearable device are used as slave nodes;
  • the cockpit domain controller (Cockpit domain controller, CDC ), display screen, microphone, speaker and mobile phone belong to one communication domain, for example, it is called the second communication domain, in which CDC serves as the master node, and display screen, microphone, speaker and mobile phone serve as slave nodes;
  • keyless entry and start (passive entry passive start, PEPS) system, mobile phone key and car key belong to a communication domain, for example called the third communication domain, wherein the PEPS system serves as the master node, and the mobile phone key and car key serve as slave nodes.
  • PEPS passive entry passive start
  • the division may be based on various factors. For example, the division may be made according to the functions performed by the on-vehicle equipment. Furthermore, if several vehicle-mounted devices are used to cooperate to complete a certain function (for example, a power function), these several vehicle-mounted devices may be divided into a communication domain. For another example, it may be divided according to the spatial position in the vehicle where the vehicle-mounted device is located. For another example, it can be divided according to factors such as the spatial position of the vehicle-mounted device in the vehicle and the functions that the vehicle-mounted device cooperates to complete. For another example, the communication domain may also be divided from the perspective of resources.
  • the resources allocated by a node for communication between the node and other nodes can be called a communication domain, then the node is the master node of the communication domain, and other nodes using the communication domain (resources) to communicate with the node are The slave node of this communication domain.
  • the communication domain shown in Fig. 2b is only an example.
  • each communication domain may also include other vehicle-mounted devices, for example, the third communication domain may also include a body control module (body control module, BCM) and the like.
  • BCM body control module
  • a master node in one communication domain may also serve as a slave node in another communication domain, for example, a mobile phone in the first communication domain may serve as a slave node in the second communication domain.
  • FIG. 2c is a schematic diagram of a local area wireless communication scenario of the present application.
  • the application scenario includes one access point (access point, AP) and two stations (station) as an example.
  • the AP acts as the master node
  • the station acts as the slave node.
  • the station can access the AP through wireless fidelity (Wi-Fi).
  • Wi-Fi wireless fidelity
  • the station takes a mobile phone as an example.
  • the system architecture shown in FIG. 1 above can also be applied to a V2X communication scenario.
  • three terminal devices can communicate through sidelinks (SL).
  • the terminal device used to schedule resources may serve as a master node
  • the terminal device used to listen to scheduled resources may serve as a slave node.
  • this process when the master node sends information to the slave node, this process is regarded as a downlink transmission process; when the slave node sends information to the master node, this process is regarded as an uplink transmission process.
  • this process can also be regarded as a downlink transmission process (at this time, the master nodes of other communication domains can be regarded as joining the highest priority communication domain, as the slave node of the communication domain), while the master nodes of other communication domains send information to the master node of the communication domain with the highest priority, this process can also be regarded as an uplink transmission process (at this time, other communication domains
  • the master node can also be regarded as joining the communication domain with the highest priority as the slave node of the communication domain).
  • the uplink generally refers to a direction in which a terminal (terminal, T) node sends data or information to a management (grant, G) node, which may be represented by "T”.
  • Downlink usually refers to the direction in which node G sends information to node T, which can be represented by "G”. It can also be understood that “G” indicates downlink transmission, and “T” indicates uplink transmission, which is just an example. Alternatively, “U” indicates uplink transmission, and “D” indicates downlink transmission.
  • the present application provides a communication method.
  • the second communication device if it does not correctly receive the first information sent by the first communication device, it can send feedback information in the unified first time-frequency resource.
  • each of the second communication device group The second communication device sends the feedback information independently on different time-frequency resources, which can save feedback resources, thereby improving feedback efficiency as much as possible on limited feedback resources.
  • the method may be executed by the first communication device and the second communication device in the second communication device group, the first communication device may be the master node shown in Figure 1, and the second communication device may be the slave node shown in Figure 1 above, Wherein, two slave nodes may form the second communication device group.
  • the first communication device may be the network device shown in FIG. 2a, and the second communication device may be the two terminal devices shown in FIG. 2a above, wherein the two terminal devices may form a second communication device group.
  • the first communication device may be the AP in FIG. 2b above, and the second communication device may be the station in FIG. 2b above, where the two stations may form a second communication device group.
  • the first communication device may be a mobile phone in the first communication domain shown in FIG.
  • the second communication device may be the headset and wearable device in the first communication domain shown in FIG. Type equipment can form a second communication device group; or, the first communication device can be the CDC in the second communication domain shown in Figure 2c, and the second communication device can be the display in the second communication domain shown in Figure 2c Screen, microphone, sound box and mobile phone, wherein, display screen, microphone, sound box and mobile phone can form the second communication device group; Or, the first communication device can be the PEPS system in the 3rd communication domain shown in Fig. 2c, the second The communication device may be the mobile phone key and the car key in the third communication domain shown in FIG. 2c above, wherein the mobile phone key and the car key may form the second communication device group.
  • the first communication device may be the terminal device used to schedule resources in FIG. 2d above
  • the second communication device may be the terminal device used to listen to resource scheduling in FIG. 2d above, wherein the terminal device that listens to resource scheduling may be the first Two communication device sets.
  • the first communication device may send configuration signaling to the second communication devices that need to form the second communication device group in a unicast manner, and the configuration signaling includes but is not limited to the second communication device One or more of the identifier of the group, the identifier of the second communication device, or the resource information of the communication between the first communication device and the second communication device group.
  • the resource for the first communication device to communicate with the second communication device group may be a multicast resource for the first communication device to send multicast information to the second communication device.
  • the second communication device group may include at least two second communication devices.
  • the method may include the steps of:
  • Step 301 a first communication device sends first information to a group of second communication devices.
  • the first communication device may send the first information in a multicast manner, that is, the first communication device may send the first information to a group of second communication devices, where the first information may be multicast information.
  • the first communication device may send a configuration signal to each second communication device in the second communication device group, where the configuration signal includes a multicast message for sending the first information resource.
  • the first communication device sends the first information on the multicast resource.
  • the second communication device may detect the first information on the multicast resource.
  • the first information may be multicast service data, or may also be signaling (such as physical layer signaling or high-layer signaling, etc.), or may also include at least one signal (such as synchronization signal, reference signal, channel estimation signal, channel detection signal, phase tracking signal and/or positioning signal, etc.).
  • signaling such as physical layer signaling or high-layer signaling, etc.
  • at least one signal such as synchronization signal, reference signal, channel estimation signal, channel detection signal, phase tracking signal and/or positioning signal, etc.
  • the first communication device may perform modulation and coding on the original information to obtain the first information.
  • step 302 the second communication device detects first information.
  • At least two second communication devices in the second communication device group detect the first information from the first communication device in a corresponding multicast resource. It can be understood that at least two second communication devices in the second communication device group attempt to receive the first information from the first communication device within the corresponding multicast resource. Based on this, the second communication device may or may not receive the first information.
  • Step 303 if the first information is not received correctly, the second communication device sends feedback information in the first time-frequency resource.
  • the first time-frequency resource is a feedback resource for any second communication device in the second communication device group. It can also be understood that the feedback resources used by the second communication devices in the second communication device group to send the feedback information are all the first time-frequency resources. In other words, each second communication device in the second communication device group occupies the same frequency domain resource and the same time domain resource when sending feedback information to the first communication device.
  • the feedback resources for the two slave nodes in the second communication device group to send feedback information to the master node are both first time-frequency resources.
  • the feedback resources used by the two terminal devices in the second communication device group to send feedback information to the network device are both first time-frequency resources.
  • the feedback resources used by the two stations in the second communication device group to send feedback information to the AP are both the first time-frequency resources.
  • the feedback resource for the earphones and wearable devices in the second communication device group to send feedback information to the mobile phone is the first time-frequency resource; or, in the second communication domain, the second communication device
  • the feedback resources for the display screen, microphone, speaker and mobile phone in the group to send feedback information to the CDC are all first time-frequency resources; or, in the third communication domain, the mobile phone key and car key in the second communication device group send the PEPS system
  • the feedback resources for sending the feedback information are all first time-frequency resources.
  • the second communication device may obtain the first time-frequency resource based on the method shown in FIG. It may be pre-agreed by the first communication device and the second communication device, which is not limited in this application.
  • the feedback information may be used to indicate that there is at least one second communication device in the second communication device group that has not correctly received the first information.
  • the incorrectly receiving the first information includes, but is not limited to, failing to demodulate and decode the first information, or failing to receive the first information sent by the first communication device, and the like.
  • the feedback information may be, for example, a negative acknowledgment character (negative acknowledgment, NACK), or other information that may indicate that the first information has not been received correctly.
  • NACK negative acknowledgment character
  • the specific form of the feedback information may be designated by the first communication device and notified to the second communication device, or may be pre-agreed between the first communication device and the second communication device, or may be predefined by a protocol. Yes, this application does not limit it.
  • the feedback information may be carried by a signal.
  • the signal carrying the feedback information refer to the following related introduction, and details are not repeated here.
  • the second communication device in the second communication device group that has not correctly received the first information may send feedback information to the first communication device on the same time-frequency resource (ie, the first time-frequency resource);
  • the second communication device that correctly receives the first information may not send any signal.
  • the symbol rate (symbol rate) used for the transmission of the feedback information is smaller than the symbol rate used for the transmission of the first information.
  • the symbol rate may also be referred to as a code rate or a symbol transmission rate, and the unit of the symbol rate is symbol per second (symbol per second, sps). It can also be understood that the duration of each symbol of the feedback information sent by the second communication device is longer than the duration of each symbol of the first information sent by the first communication device.
  • the duration for the second communication device to send feedback information can be extended, thereby helping to reduce the interference between symbols caused by channel multipath and/or incomplete synchronization of feedback information sent by different second communication devices, and thus effectively It helps to improve the accuracy of the feedback information detected by the first communication device.
  • the first communication device may detect feedback information from at least one second communication device in the second communication device group within the first time-frequency resource.
  • the first communication device attempts to receive feedback information from the second communication device group within the first time-frequency resource. Based on this, the first communication device may receive the feedback information, or may not receive the feedback information from the second communication device group.
  • the first communication device may receive a signal carrying feedback information on the first time-frequency resource.
  • the signal carrying feedback information is that all or part of the first information has not been received correctly.
  • the signal carrying the feedback information may also be feedback information sent by a certain second communication device in the second communication device group, and other feedback information may be missed or not received due to other reasons.
  • each second communication device in the second communication device group uses the same first time-frequency resource to send feedback information to the first communication device, which helps to reduce the resources occupied by the feedback information, especially When the number of second communication devices in the second communication device group is large. Further, the feedback information is sent only by the second communication devices in the second communication device group that have not correctly received the first information, thereby helping to reduce the interference between the feedback information of different second communication devices.
  • the first communication device receives feedback information from the second communication device group within the first time-frequency resource, it means that there is at least one first communication device in the second communication device group that has not received the first information correctly.
  • the first communication device may send the second information.
  • the second information may be the same as the first information, that is, the first communication device may resend the first information.
  • the second information may also be generated according to the original information corresponding to the first information, for example, the second information may be information obtained after changing a modulation and coding scheme (MCS) for the original information.
  • MCS modulation and coding scheme
  • the second information may be sent to the second communication devices that have not received the first information correctly in a unicast manner ;
  • the second communication device that has not correctly received the first information can detect the second information from the first communication device.
  • the first communication device may also send the second information to the second communication device group in a multicast manner; correspondingly, at least two second communication devices in the second communication device group detect the second information in the corresponding multicast resource .
  • the manner in which the first communication device can obtain which second communication devices in the second communication device group did not receive the first information correctly can refer to the introduction of the following scenario 2, which will not be repeated here.
  • the second communication device group may send the second information in a multicast manner.
  • at least two second communication devices in the second communication device group detect the second information in the corresponding multicast resource.
  • the second information may also be sent to each or at least one second communication device in the second communication device group in a unicast manner, so that each second communication device in the second communication device group can be as correct as possible.
  • a second message is received.
  • the signal carrying the feedback information may consist of one or more sequences.
  • partial sequences or all sequences of one or more sequences of signals carrying feedback information may be predefined (for example, stipulated by protocols, regulations, or industry standards, etc.) or preconfigured (for example, can be The sequence is configured by the signaling transmitted before transmitting the sequence, and the sequence can be configured for the sending node and the receiving node of the sequence using wireless communication technology or other technologies other than wireless communication technology, such as wired communication technology, or by sending The configuration interface reserved by the node and the receiving node, the configuration jumper or the configuration software, etc.), for example, the sequence obtained based on the m-sequence and/or the Gold sequence.
  • partial sequences or all sequences of one or more sequences of signals carrying feedback information may also be obtained according to predefined rules (for example, protocols, regulations or industry standards, etc. stipulate the generation rules of the sequence, and the sending node of the sequence and the receiving node can generate a sequence according to this rule), such as a sequence obtained based on a preamble sequence (or called a preamble).
  • the preamble sequence may also be used to indicate one or more items of frequency used by symbols of the second communication device, timing estimation, automatic gain control configuration, or symbol rate and synchronization.
  • the leading sequence usually adopts a fixed "01" sequence, such as "010101" or "101010" and so on.
  • partial sequences or all sequences of one or more sequences of signals carrying feedback information may also be obtained according to predefined and/or preconfigured parameters according to predefined rules, for example, the first identifier of the second communication device
  • a sequence of identifiers of a sequence or a link for a specific sequence of obtaining the first identifier of the second communication device, refer to the introduction of the following scenario 4, and for a specific sequence of obtaining the identifier of the link, refer to the introduction of the following scenario 5.
  • partial sequences or all sequences of one or more sequences of signals carrying feedback information may also be obtained by combining the sequences obtained in at least one of the foregoing manners according to a predefined combination rule.
  • the combination rules here can be arranged in a predefined order, or the numbers in multiple sequences are operated and rearranged according to predefined rules, etc., for example, the numbers in a predefined sequence are multiplied by the predefined spreading/spreading Time series, and arranged in order to obtain the signal carrying the feedback information.
  • a sequence is composed of numbers with a predetermined length and sequence.
  • the type of the number may be, for example, "0" or “1” bit, or a real number, or a complex number, or an integer.
  • the sequence can be a "01" string composed of "0" and "1" bits, or it can also be a real number string composed of real numbers, or it can also be a complex number string composed of complex numbers, etc., or it can also be an integer composed of integers string.
  • the receiving node and the sending node may obtain a sequence (or sequence set) in advance, that is, obtain in advance the length of the sequence of the signal carrying the feedback information, the arrangement order of the numbers, and the like.
  • a sequence or sequence set
  • the first communication device and the second communication device in the group of the second communication device have obtained one or more determination methods of the signal bearing the feedback information, including but not limited to The determination method given above.
  • one or more sequences of signals carrying feedback information may include a sequence based on an m-sequence, a Gold sequence, a preamble sequence, a sequence of the first identification of the second communication device, and an identification of the link ( m-sequence, Gold sequence, preamble sequence, the sequence of the first identification of the second communication device and the sequence of the identification of the link.
  • sequences can be called the basic sequence or the original sequence) and are obtained by any sequence or combination of any items.
  • a sequence, or it can also be any one of the above-mentioned sequences or the sequence itself obtained by combining any of them.
  • one or more sequences of signals carrying feedback information may be any one of m-sequence, Gold sequence, preamble sequence, sequence of identification of the second communication device, or sequence of identification of the link. Obtained after phase modulation; for example, it may be a signal carrying feedback information obtained by performing phase modulation on the m sequence; for another example, it may be a signal carrying feedback information obtained after performing phase modulation on the Gold sequence, and so on.
  • it may also be obtained by encoding any one of the m-sequence, the Gold sequence, the preamble sequence, the sequence of the identification of the second communication device, and the sequence of the identification of the link before performing phase modulation; for example, it may be m A signal carrying feedback information obtained after sequence encoding and then phase modulation; for another example, it may be a signal carrying feedback information obtained after Gold sequence encoding and phase modulation, and so on.
  • phase modulation may be performed on any of the m-sequence, the Gold sequence, the preamble sequence, the sequence of the identifier of the second communication device, and the sequence of the identifier of the link, and the phase-modulated sequences are combined (for example, it can be obtained by combining the m sequence and the Gold sequence according to the preset combination rule; for example, it can be a signal carrying feedback information obtained by combining the m sequence and the Gold sequence according to the preset combination rule; The sequence and the preamble sequence are phase-modulated respectively, and then combined according to a preset combination rule to obtain a signal carrying feedback information.
  • any item in the m-sequence, the Gold sequence, the preamble sequence, the sequence of the identification of the second communication device, and the sequence of the identification of the link can also be encoded first and then phase-modulated, and after the encoding and phase modulation
  • the sequences are combined according to the preset combination rules; for example, the m sequence can be coded first and then phase modulated, the Gold sequence can be coded first and then phase modulated, and then coded and phase modulated according to the preset combination rules m-sequence, and a signal carrying feedback information obtained by combining the encoded and phase-modulated Gold sequence; this application does not limit this.
  • phase modulation is used as an example for illustration, and the modulation methods of the m-sequence, the Gold sequence, the preamble sequence, the sequence of the identification of the second communication device, and the sequence of the identification of the link in this application are different. To be limited, for example, it may also be amplitude modulation, frequency modulation, or quadrature amplitude modulation.
  • one or more sequences of signals carrying feedback information are obtained based on the m-sequences.
  • one or more sequences of signals carrying feedback information may be obtained by modulating the m-sequence. That is to say, the sequence obtained by modulating the m-sequence is a signal carrying feedback information.
  • one or more sequences of the signal bearing the feedback information may also be obtained by encoding the m-sequence and then modulating it. That is to say, the sequence obtained by encoding the m-sequence and then modulating it is the signal carrying the feedback information.
  • the second communication device Based on the first situation, if the second communication device does not receive the first information correctly, it sends a sequence obtained based on the m-sequence (ie, a signal carrying feedback information) to the first communication device.
  • the second communication device may generate m-sequences in advance, and if it is determined that the first information has not been received correctly, modulate the m-sequences to obtain modulated m-sequences, and send the modulated m-sequences to the first communication device.
  • the second communication device may store or obtain the modulated m-sequence in advance, and may send the modulated m-sequence to the first communication device if the first information is not received correctly. It should be understood that the acquisition by the second communication device of the signal carrying the feedback information obtained based on the m-sequence given here is only an example, which is not limited in the present application.
  • the first communication device may determine that there is at least one second communication device in the second communication device group that has not correctly received the first information.
  • the m-sequence is easy to generate, has strong regularity, and has good autocorrelation and cross-correlation characteristics. Therefore, the m-sequence can effectively resist interference and noise, so that the reliability of the first communication device to detect feedback information can be improved. sex.
  • one or more sequences of signals carrying feedback information are obtained based on the Gold sequence.
  • the Gold sequence is a code sequence based on the m-sequence, which has good autocorrelation and cross-correlation, and produces a large number of sequences.
  • the Gold sequence may be modulated or coded and then modulated to obtain one or more sequences of signals carrying feedback information. It can also be understood that the sequence obtained by modulating the Gold sequence or modulating the Gold sequence after coding is the signal carrying the feedback information.
  • the second communication device Based on the second situation, if the second communication device does not receive the first information correctly, it sends a sequence obtained based on the Gold sequence (ie, a signal carrying feedback information) to the first communication device.
  • the second communication device may generate a Gold sequence in advance, and if it is determined that the first information has not been received correctly, modulate the Gold sequence to obtain a modulated Gold sequence, and send the modulated Gold sequence to the first communication device.
  • the second communication device may store or obtain the modulated Gold sequence in advance, and may send the modulated Gold sequence to the first communication device if the first information is not received correctly. It should be understood that the acquisition by the second communication device of the signal carrying the feedback information obtained based on the Gold sequence is only an example, and this application does not limit it.
  • the first communication device may determine that there is at least one second communication device in the second communication device group that has not correctly received the first information.
  • one or more sequences of signals carrying feedback information are obtained based on the preamble sequence.
  • one or more sequences of the signal bearing the feedback information may be obtained by modulating the preamble sequence, or may also be obtained by modulating the preamble sequence after encoding. That is to say, the sequence obtained by modulating or encoding the preamble sequence is the signal carrying the feedback information.
  • the second communication device Based on the third situation, if the second communication device does not receive the first information correctly, it sends a sequence obtained based on the preamble sequence (ie, a signal carrying feedback information) to the first communication device.
  • the second communication device may generate a preamble in advance, and if it is determined that the first information has not been received correctly, modulate the preamble to obtain a modulated preamble, and send the modulated preamble to the first communication device.
  • the second communication device may store or obtain the modulated preamble in advance, and may send the modulated preamble to the first communication device if the first information is not received correctly. It should be understood that the acquisition by the second communication device of the signal bearing the feedback information obtained based on the preamble sequence given here is only an example, which is not limited in the present application.
  • the first communication device may determine that there is at least one second communication device in the second communication device group that has not correctly received the first information.
  • the sequence of the first identification of the second communication device may be obtained by processing the first identification of the second communication device according to a predefined rule.
  • the first identifier of the second communication device is a predefined and/or pre-configured parameter, for example, it may be a medium access control (medium access control, MAC) address of the second communication device, or may be an assigned second Identifier within the communicator group.
  • Predefined rules can be represented in binary, for example.
  • the binary representation of the first identification of the second communication device can obtain a binary sequence of the first identification of the second communication device. It should be understood that the sequence of the first identifiers of the second communication apparatus is the sequence of identifiers of the devices.
  • one or more sequences of signals carrying feedback information may be obtained by modulating the sequence of the first identification of the second communication device; or may be a sequence of the first identification of the second communication device Modulated after encoding.
  • the second communication device Based on the fourth situation, if the second communication device does not receive the first information correctly, it sends a sequence obtained based on the sequence of the first identification of the second communication device (ie, a signal carrying feedback information) to the first communication device. It should be noted that the sequence of the first identification of the second communication device may be generated and stored in advance, or may be generated after the second communication device determines that the first information has not been received correctly.
  • the first communication device may determine that there is at least one second communication device in the second communication device group that has not correctly received the first information.
  • one or more sequences of signals carrying feedback information are obtained based on the sequence of link identifiers.
  • the sequence of link identifiers may be obtained by processing the link identifiers according to a predefined rule.
  • the identification of the link can be a predefined and/or pre-configured parameter, for example, it can be generated according to a predefined rule (for example, it can be the distribution law of "0" and "1" in a sequence of a certain length, etc.)
  • a predefined rule for example, it can be the distribution law of "0" and "1" in a sequence of a certain length, etc.
  • a sequence with a length of 32 bits (bits) or a sequence of other lengths where a link can be understood as a logical channel for information (or data) interaction between the first communication device and the second communication device, and the link identification It can be understood as an identifier of a logical channel, and an identifier of a link is, for example, an access address (AA).
  • the pre-defined rules may eg be binary representations of the identities of the links.
  • one or more sequences of the signal bearing the feedback information may be obtained by modulating the sequence of the link identification; or may be obtained by modulating the sequence of the link identification after encoding.
  • the second communication device Based on the fifth situation, if the second communication device fails to receive the first information correctly, it sends a sequence obtained based on the sequence of the link identifier (ie, a signal carrying feedback information) to the first communication device. It should be noted that the sequence of link identifiers may be generated and stored in advance, or may also be generated after the second communication device determines that the first information has not been received correctly.
  • the sequence of link identifiers may be generated and stored in advance, or may also be generated after the second communication device determines that the first information has not been received correctly.
  • the first communication device may determine that there is at least one second communication device in the second communication device group that has not correctly received the first information.
  • one or more sequences of signals carrying feedback information are obtained based on the preamble sequence and the m-sequence.
  • the preamble sequence is located at the beginning of one or more sequences of the signal carrying the feedback information, as shown in FIG. 4 .
  • one or more sequences of signals carrying feedback information may be obtained by modulating the preamble sequence and the m-sequence respectively, and then combining them according to a preset combination rule.
  • one or more sequences of the signal carrying the feedback information may also be obtained by encoding the preamble sequence and the m-sequence separately, then modulating them separately, and then combining them according to a preset combination rule. That is to say, the preamble sequence is encoded and modulated to obtain the modulated preamble sequence, the m sequence is encoded and modulated to obtain the modulated m sequence, and then the modulated preamble sequence and the m sequence are combined according to a preset combination rule, Get the signal carrying the feedback information.
  • the second communication device Based on the sixth situation, if the second communication device does not receive the first information correctly, it sends a sequence obtained based on the preamble sequence and the m-sequence (ie, a signal carrying feedback information) to the first communication device.
  • the first communication device detects a signal carrying feedback information from the second communication device group, it may determine that there is at least one second communication device in the second communication device group that has not correctly received the first information.
  • the first identifier of the second communication device in the above scenario 4 may be notified by the second communication device to the first communication device, or may be negotiated when the first communication device establishes a connection with the second communication device.
  • the identifier of the link in the fifth situation above may also be notified by the second communication device to the first communication device, or may be negotiated when the first communication device establishes a connection with the second communication device.
  • one or more sequences of signals carrying feedback information in this application may also be based on m-sequence, Gold sequence, preamble sequence, or the first sequence of the second communication device.
  • Other combinations of the ID sequence and the ID sequence of the link can also be obtained based on the m sequence and the Gold sequence, or based on the preamble sequence and the Gold sequence, or based on the preamble sequence and the sequence of the first identification of the second communication device, or based on the preamble sequence and The obtaining of the sequence of the link identifier and the like will not be listed here one by one.
  • At least one of the one or more sequences carrying feedback information corresponding to different second communication devices in the second communication device group may be different, or all the sequences may be the same. The situation is introduced below.
  • one or more sequences of signals carrying feedback information of different second communication devices in the second communication device group are the same.
  • sequence of signals carrying feedback information is a sequence
  • sequence of signals carrying feedback information of different second communication devices in the second communication device group is the same; if the signal carrying feedback information If there are multiple sequences, the multiple sequences of signals carrying feedback information of different second communication devices in the second communication device group are all the same.
  • the m-sequences corresponding to different second communication devices in the second communication device group are the same; or, the shifts of the m-sequences corresponding to different second communication devices in the second communication device group are the same.
  • the shifting of the m-sequence can be, for example, moving some numbers in the m-sequence to the front, for example, the last 3 in the m-sequence can be shifted to the front of the m-sequence, etc.
  • one or more sequences of signals carrying feedback information obtained based on the same m-sequence are the same.
  • one or more sequences of the signal bearing the feedback information obtained based on the shift of the same m-sequence are the same.
  • the way in which different second communication devices in the second communication device group obtain one or more sequences of signals carrying feedback information based on the m-sequence is not limited to being based on the same m-sequence or shifting of the same m-sequence , the above are examples only.
  • the Gold sequences corresponding to different second communication devices in the second communication device group are the same.
  • one or more sequences of signals carrying feedback information obtained based on the same Gold sequence are the same.
  • the manner in which different second communication devices in the second communication device group obtain one or more sequences of signals carrying feedback information based on the Gold sequence is not limited to being based on the same Gold sequence, and the above is only an example.
  • the preamble sequences corresponding to different second communication devices in the second communication device group are the same.
  • one or more sequences of signals carrying feedback information obtained based on the same preamble sequence are the same.
  • the manner in which different second communication devices in the second communication device group obtain one or more sequences of the signal carrying feedback information based on the preamble sequence is not limited to being based on the same preamble sequence, and the above is only an example.
  • the sequences of the first identifiers of the second communication devices corresponding to different second communication devices in the second communication device group are the same.
  • the sequences of the first identifiers corresponding to different second communication devices in the second communication device group are the same.
  • one or more sequences of signals carrying feedback information obtained based on the same first identified sequence are the same.
  • the sequence of the identifiers of links corresponding to different second communication devices in the second communication device group is the same.
  • identifiers of links corresponding to different second communication devices in the second communication device group are the same.
  • one or more sequences of signals carrying feedback information obtained based on the same sequence of link identifiers are the same.
  • the m-sequences corresponding to the different second communication devices in the second communication device group are the same and the corresponding preamble sequences are also the same; or, the shift of the m-sequences corresponding to the different second communication devices in the second communication device group
  • the bits are the same and the corresponding preamble sequences are also the same.
  • one or more sequences of signals carrying feedback information obtained based on the same m-sequence and the same preamble sequence are the same.
  • one or more sequences of the signal bearing the feedback information obtained based on the shift of the same m-sequence and the same preamble sequence are the same.
  • the method of obtaining one or more sequences of the signal carrying the feedback information based on the preamble sequence and the m sequence is not limited to being based on the same m sequence and the same preamble sequence, or based on the shift and the same m sequence
  • the same preamble, as above are examples only.
  • the first communication device may send the first indication information to the second communication device group in a multicast manner, and the first indication information is used to indicate one or more signals carrying feedback information corresponding to the second communication device. At least one sequence in the sequence; or, the first communication device may also send the first indication information to each second communication device in the second communication device group in a unicast manner.
  • the second communication device in the second communication device group may determine at least one sequence of one or more sequences of signals carrying feedback information according to the received first indication information.
  • the first indication information can be used to indicate the sequence obtained by the m-sequence or the shift of the m-sequence corresponding to the second communication device; based on the above-mentioned situation 2, the first indication information can be used to indicate The sequence obtained based on the Gold sequence corresponding to the second communication device; based on the above situation 4, the first indication information can be used to indicate the sequence obtained based on the sequence of the first identification of the second communication device; based on the above situation 5, the first indication information can be used Based on the sequence obtained by indicating the sequence of the link-based identification; based on the above situation six, the first indication information may indicate at least one of one or more sequences of signals carrying feedback information; for example, the first indication information may be used to Indicates the sequence obtained based on the m-sequence corresponding to the second communication device.
  • the first indication information may include information of a base sequence or an original sequence used to obtain at least one sequence of one or more sequences of signals carrying feedback information; it can also be understood as, The first indication information may indirectly indicate the at least one sequence.
  • the first indication information may include information of at least one sequence among the one or more sequences of the signal carrying feedback information; it may also be understood that the first indication information may directly indicate the at least one sequence.
  • one or more sequences of the signal bearing the feedback information also include an m-sequence, a Gold sequence, a preamble sequence, a sequence of the first identifier of the second communication device, and a sequence of the identifier of the link.
  • one or more sequences of signals carrying feedback information include m-sequences, and the first indication information may be used to indicate the second communication device's corresponding m-sequence or a shift of the m-sequence.
  • one or more sequences of signals carrying feedback information include a Gold sequence, and the first indication information may be used to indicate the Gold sequence corresponding to the second communication device.
  • one or more sequences of signals carrying feedback information include a sequence of the first identification of the second communication device, and the first indication information may be used to indicate the sequence of the first identification of the second communication device.
  • one or more sequences of signals carrying feedback information include a sequence of link identifiers, and the first indication information may be used to indicate the sequence of link identifiers.
  • one or more sequences of the signal bearing the feedback information include an m-sequence and a preamble sequence, and the first indication information may be used to indicate the m-sequence. They are not listed here.
  • the first indication information may include at least one sequence information used to obtain one or more sequences of signals carrying feedback information; it can also be understood that the first indication information may indirectly indicate the at least one sequence.
  • the first indication information may include information of at least one sequence among the one or more sequences of the signal carrying feedback information; it may also be understood that the first indication information may directly indicate the at least one sequence.
  • the second communication device that has not received the first indication information may obtain the signal carrying the feedback information in a manner predefined in the protocol or in a pre-agreed manner.
  • the first indication information may be sent before the first communication device establishes a connection with the second communication device, or may also be sent during the process of establishing a connection between the first communication device and the second communication device, or It may also be sent after the first communication device establishes a connection with the second communication device and before the second communication device sends the feedback information, which is not limited in this application.
  • At least one sequence of one or more sequences of signals carrying feedback information corresponding to different second communication devices in the second communication device group is different.
  • one or more sequences of signals carrying feedback information include one or more of sequences based on m-sequence, Gold sequence, preamble sequence, sequence of the first identification of the second communication device, or sequence of identification of the link obtained sequence.
  • At least one of the one or more sequences of the signals carrying the feedback information corresponding to different second communication devices is different.
  • the m-sequences corresponding to different second communication devices in the second communication device group are different; or, the shifts of the m-sequences corresponding to different second communication devices in the second communication device group are different. It should be understood that for m-sequences of the same length, there may be multiple different m-sequences because numbers (such as "01") are arranged in different order.
  • one or more sequences of signals carrying feedback information obtained based on different m sequences are different.
  • One or more sequences of the signal bearing the feedback information obtained based on shifts of different m-sequences are different.
  • the manner in which different second communication devices in the second communication device group obtain one or more sequences of signals carrying feedback information based on m-sequences is not limited to different m-sequences or shifts based on different m-sequences , the above is only an example, for example, different modulation modes may be adopted based on the same m-sequence, or different modulation modes may be adopted based on the shift of the same m-sequence.
  • the first communication device may send the first indication information to the second communication device in the second communication device group in a unicast manner, and the first indication information may be used to indicate that the second communication device corresponds to The sequence obtained based on the m-sequence or the shift of the m-sequence.
  • the second communication device that has received the first indication information may obtain at least one sequence of one or more sequences of signals carrying feedback information according to the first indication information.
  • the first communication device can accurately identify which second communication device in the group of second communication devices has not correctly received the first information. Moreover, since the m-sequences corresponding to the second communication devices in the second communication device group are different, one or more sequences carrying feedback information obtained based on different m-sequences are also different. When one time-frequency resource sends the feedback information, it helps to reduce inter-symbol interference caused by multipath and/or incomplete synchronization of signals carrying the feedback information sent by different second communication devices.
  • the m-sequence shift based on the signal carrying the feedback information may include at least two consecutive Shift the same m-sequence.
  • a shifted m-sequence is 1100101, and two consecutive m-sequences with the same shift are 11001011100101.
  • the first communication device can use one m-sequence delay correlation to detect the existence of feedback information, and the implementation is simple.
  • the Gold sequences corresponding to different second communication devices in the second communication device group are different.
  • one or more sequences of signals carrying feedback information obtained based on different Gold sequences are different.
  • the manner in which different second communication devices in the second communication device group obtain one or more sequences of signals carrying feedback information based on the Gold sequence is not limited to being based on different Gold sequences.
  • the above is only an example, for example, Different modulation modes and the like may be used for the same Gold sequence.
  • the first communication device may send the first indication information to the second communication device in the second communication device group in a unicast manner, and the first indication information may be used to indicate that the second communication device corresponds to The sequence obtained based on the Gold sequence.
  • the preamble sequences corresponding to different second communication devices in the second communication device group are different.
  • one or more sequences of signals carrying feedback information obtained based on different preamble sequences are different.
  • the manner in which different second communication devices in the second communication device group obtain one or more sequences of signals carrying feedback information based on the preamble sequence is not limited to being based on different preamble sequences, the above is only an example, for example, Different modulation modes and the like may be adopted based on the same preamble sequence.
  • the sequences of the first identifiers of the second communication devices corresponding to different second communication devices in the second communication device group are different.
  • one or more sequences of signals carrying feedback information obtained based on different sequences of the first identification of the second communication device are different.
  • the manner in which different second communication devices in the second communication device group obtain one or more sequences of signals carrying feedback information based on the sequence of the first identification is not limited to the sequence based on different first identifications, as described above It is only an example, for example, different modulation modes may also be adopted based on the same first identified sequence.
  • the first communication device may send the first indication information to the second communication device in the second communication device group in a unicast manner, and the first indication information may be used to indicate that the second communication device corresponds to The sequence obtained based on the first identified sequence.
  • the sequences of the link identifiers corresponding to different second communication devices in the second communication device group are different.
  • one or more sequences of signals carrying feedback information obtained based on different sequences of link identifiers are different.
  • the method of obtaining one or more different sequences of signals carrying feedback information based on the sequence of link identifiers is not limited to the sequence based on different link identifiers, the above is only an example, for example, it may also be based on the same
  • the sequence of the identification of the link adopts different modulation modes and the like.
  • the first communication device may send the first indication information to the second communication device in the second communication device group in a unicast manner, and the first indication information may be used to indicate that the second communication device corresponds to The sequence obtained based on the sequence of link identifiers.
  • At least one of the preamble sequence and the m-sequence corresponding to different second communication devices in the second communication device group is different.
  • different second communication devices in the second communication device group have different sequences obtained based on the preamble sequence and the m-sequence.
  • one or more sequences of signals carrying feedback information obtained based on different m-sequences and/or different preamble sequences are different.
  • one or more sequences of signals carrying feedback information obtained based on different m-sequence shifts and/or different preamble sequences are different.
  • the method of obtaining one or more sequences of the signal carrying the feedback information is not limited to being based on different m-sequences and/or different preamble sequences, or based on shifting of different m-sequences And/or different preamble sequences, the above is only an example, for example, different modulation methods can be adopted based on the same preamble sequence and the same m-sequence, or different modulation methods can be adopted based on the shift of the same preamble sequence and the same m-sequence Modulation.
  • the first communication device may send the first indication information to the second communication device in the second communication device group in a unicast manner, and the first indication information may be used to indicate that the second communication device corresponds to the preamble-based sequence and the sequence obtained by the m-sequence; or, the first indication information may only indicate the sequence obtained by the second communication device based on the m-sequence.
  • the signal carrying the feedback information includes N subsequences, where N is an integer greater than 1.
  • the N subsequences are a set of subsequences contained in all sequences of signals carrying feedback information.
  • one second communication device corresponds to N subsequences, and at least one subsequence among the N subsequences corresponding to different second communication devices in the second communication device group is different.
  • FIG. 5 it is a schematic flowchart of a method for obtaining N subsequences by a second communication device provided in the present application. The method includes the following steps:
  • Step 501 the second communication device acquires a second identifier of the second communication device.
  • the second identifier of the second communication device may include a MAC address of the second communication device, or may also include an assigned group identifier of the second communication device in the second communication device group. It should be noted that the second identifier of the second communication device may be the same as the first identifier of the second communication device, for example, both are the MAC address of the second communication device, or both are in the second communication device group The assigned ID within the group. Or, the second identification of the second communication device is different from the first identification, for example, the second identification of the second communication device is the MAC address of the second communication device, and the first identification of the second communication device is the MAC address of the second communication device.
  • the assigned intra-group ID within the group for another example, the second ID of the second communication device is the assigned intra-group ID within the second communication device group, and the first ID of the second communication device is the second communication device MAC address, which is not limited in this application.
  • the second identifier of the second communication device may be represented by a bit sequence, and the bit sequences representing the second identifiers of different second communication devices in the same second communication device group have the same length.
  • the second identifier of the second communication device may be unique to the second communication device in the second communication device group. For example, when a second communication device belongs to multiple communication device groups, different second identifiers may be used in different communication device groups. In another case, the second communication device may also use the same second identifier in different communication device groups, which is not limited in this application.
  • the second identifiers of different second communication devices in the second communication device group are different .
  • a manner in which the second communication device obtains the second identification of the second communication device is exemplarily shown as follows.
  • the first communication device may send the second configuration information, where the second configuration information may include information about a second identification of at least one second communication device in the second communication device group, and the second The information of the second identifier of the communication device may be pre-agreed between the first communication device and the second communication device, or may be stipulated in a protocol.
  • the first communication device may send the second configuration information to the second communication device in a unicast manner.
  • the second communication device can receive the second configuration information from the first communication device, and can obtain the second identification according to the second configuration information. It should be noted that, for the second communication device not configured with the second identification by the first communication device, the second identification may be randomly generated.
  • the first communication device may send the second configuration information to the second communication device group in a multicast manner.
  • the second communication device group can receive the second configuration information from the first communication device on the corresponding multicast resource, and each second communication device in the second communication device group can obtain their respective second configuration information according to the second configuration information. logo.
  • the second identifiers configured by the first communication device for different second communication devices in the second communication device group are different. In this way, in the following step 502, different second communication devices correspond to different complex number sequences, thereby helping to prevent the first communication device from being unable to detect feedback information due to reverse cancellation in a specific superposition mode.
  • the second communication device may also randomly generate the second identifier of the second communication device.
  • the second identifiers randomly generated by different second communication devices may or may not be the same.
  • the above step 501 may also obtain the second identifier of the second communication device based on this manner.
  • Step 502 the second communication device may obtain the complex number sequence according to the second identifier of the second communication device.
  • the second communication device may use a preset modulation method to modulate the second identifier to obtain a complex number sequence.
  • the preset modulation mode may be predefined by the protocol, or may be pre-configured, or may be a phase-shift keying (phase-shift keying, PSK) type configured by the first communication device for the second communication device group.
  • Modulation method, PSK type modulation method includes but not limited to binary phase shift keying (binary phase shift keying, BPSK), quadrature phase shift keying (quadrature phase shift keying, QPSK), or 8 phase shift keying (8phase-shift keying) keying, PSK) etc.
  • the obtained complex number sequence can be expressed as b 0 , b 1 ,...,b N-1 , and the length of the complex number sequence is N. It should be noted that the lengths of the complex sequence obtained by different second communication devices in the second communication device group are the same.
  • Manner 1 The first communication device sends third configuration information.
  • the third configuration information is used to indicate N.
  • the first communication device may send the third configuration information to at least one second communication device in the second communication device group in a unicast manner.
  • the second communication device may receive third configuration information from the first communication device. Further, the second communication device may determine N according to the received third configuration information.
  • the first communication device may send the second configuration information to the second communication device group in a multicast manner.
  • each second communication device in the second communication device group can receive the third configuration information from the first communication device on the corresponding multicast resource. Further, the second communication device may determine N according to the received third configuration information.
  • the first communication device may send fourth configuration information.
  • the fourth configuration information may be used as information indicating the maximum number of users supported by the second communication device group.
  • the second communications device may determine N according to the received fourth configuration information. Specifically, the size of N determined by the second communication device should satisfy that different second communication devices correspond to different second identifiers when the second communication device group includes the largest number of second communication devices. For example, if the maximum number of users supported by the second communication device is 8, then N may be determined to be 3.
  • the first communication device may send the fourth configuration information to at least one second communication device in the second communication device group in a unicast manner; or, may also send the fourth configuration information to the second communication device in a multicast manner.
  • the device group sends fourth configuration information.
  • Step 503 the second communication device acquires a public complex number sequence set.
  • the set of public complex number sequences includes at least N public complex number sequences (take Q public complex number sequences as an example, Q is an integer greater than or equal to N), and these Q public complex number sequences can be the same Q public complex number sequences ; Or it can be Q public complex number sequences that are different from each other; or it can also be that part of the public complex number sequences in the Q public complex number sequences are the same, and other parts of the public complex number sequences are different.
  • the same common complex number sequence means that the common complex number sequences have the same length, include the same numbers and arrange the numbers in the same order.
  • the public complex sequence set is an ordered set.
  • Q is equal to N as an example
  • the N common complex number sequences of A 0 to A N ⁇ 1 may be the same N common complex number sequences.
  • the public complex number sequence set includes one public complex number sequence; in other words, the N public complex number sequences included in the public complex number sequence set may be the same public complex number sequence.
  • the N common complex number sequences may also be different N common complex number sequences.
  • the i-th common complex number sequence A i may be composed of a phase-modulated first bit sequence, wherein the first bit sequence may include at least one of an m-sequence, a Gold sequence, or an identification sequence of the second communication device group.
  • the i-th common complex number sequence may be sequentially composed of a preamble sequence and a phase-modulated first bit sequence.
  • the preamble sequence is located at the start position, and the first bit sequence subjected to phase modulation is located after the preamble sequence.
  • phase modulation reference may be made to the aforementioned related introductions, which will not be repeated here.
  • i can be an integer in the closed interval [1, N], and the public complex number sequence set can be obtained.
  • the set of public complex sequences may be predefined by the protocol, or may be preconfigured, or may be a known set configured by the first communication device for the second communication device group. It can also be understood that each public complex sequence in the public complex sequence set may be predefined by the protocol, or may be preconfigured, or may be a known sequence configured by the first communication device for the second communication device group .
  • the sets of public complex sequences corresponding to different second communication devices in the second communication device group are the same.
  • the second communication device group corresponds to a common set of complex sequences.
  • the public complex sequence sets of different communication device groups may be the same or different, which is not limited in this application.
  • the second communication device may obtain N subsequences according to the complex sequence and the public complex sequence set.
  • the i-th subsequence satisfies A i ⁇ b i , where A i is the i-th common complex sequence in the set of public complex sequences , b i is the ith complex number in the complex number sequence of length N obtained according to the second identifier of the second communication device.
  • i 0
  • b i is b 0
  • a 0 ⁇ b 0 means a 0 0 ,a 1 0 , ..., a L0-1 0 is multiplied by b 0 in turn to obtain the i-th subsequence.
  • N subsequences can be obtained, which are respectively b 0 ⁇ A 0 , b 1 ⁇ A 1 , ..., b N-1 ⁇ A N-1 .
  • the second communication device may select N of the Q common complex number sequences included in the public complex number sequence set in a predefined manner.
  • lengths of i-th subsequences corresponding to different second communication devices in the second communication device group are the same, and starting positions in one or more sequences are the same.
  • the lengths of the first subsequence b 0 *A 0 corresponding to different second communication devices in the second communication device group are the same, and the first subsequence b 0 *A 0 is located in one or more of the signals carrying feedback information.
  • the sequences start at the same position.
  • different i-th subsequences corresponding to different second communication devices in the second communication device group have the same length and the same starting position in one or more sequences, so that different i-th subsequences can be realized.
  • the i-th subsequence in the signal carrying the feedback information sent by the two communication devices satisfies A i ⁇ b i is aligned.
  • the complex sequences generated based on the second identifications of the second communication devices are different from each other, therefore, the N subsequences of different second communication devices are also different . Therefore, it is helpful to prevent the first communication device from being unable to detect feedback information due to reverse cancellation in a specific superposition manner.
  • some of the second communication devices may have one or more sequences corresponding to the feedback information that are all the same, and another part of the one or more sequences corresponding to the feedback information is different in at least one sequence.
  • one or more sequences of the feedback information corresponding to the display screen in the second communication domain and the microphone are all the same, and at least one of the one or more sequences of the feedback information corresponding to the speaker and the mobile phone is different .
  • the following exemplarily shows a method for the second communication device group to acquire the first time-frequency resource.
  • FIG. 6 is a schematic flowchart of a method for a second communication device to obtain a first time-frequency resource provided in this application.
  • the method includes the following steps:
  • Step 601 the second communication device sends capability information to the first communication device.
  • the first communication device receives capability information from the second communication device.
  • At least one second communication device in the second communication device group may send capability information to the first communication device.
  • the capability information of the second communication device may also be predefined by a protocol. If there is a second communication device in the second communication device group that does not send capability information to the first communication device, the first communication device may determine capability information of the second communication device that does not send capability information based on a protocol.
  • the capability information of the second communication device includes but not limited to the processing rate of the second communication device, the interframe space (interframe space, IFS), the time interval between sending and receiving, etc. After receiving the first information, the second communication device waits for the interval of IFS before sending the feedback information.
  • This step 601 is an optional step.
  • the first communication device may obtain the first time-frequency resource according to the capability information of the second communication device.
  • the first time-frequency resource is a feedback resource for any second communication device in the second communication device group.
  • the first time-frequency resource may be configured for any second communication device in the second communication device group through the first configuration information. It can also be understood that the first configuration information is used to configure the first time-frequency resource for each second communication device in the second communication device group.
  • the first configuration information may directly indicate the first time-frequency resource; or may also indicate related information of the first time-frequency resource, for example, may be used to indicate the time-domain resource in the first time-frequency resource , or used to indicate the offset, or used to indicate the period, etc.
  • the first communication device may determine the first time-frequency resource according to the received capability information of the second communication device with the slowest processing rate, the largest inter-frame interval, and the largest transmission and reception conversion time interval in the group of second communication devices .
  • the time of sending feedback information by each second communication device in the second communication device group can be aligned as much as possible; moreover, it helps to reduce the collision probability of each second communication device in the second communication device group sending feedback information.
  • Step 603 the first communication device sends first configuration information. Accordingly, the second communication device may receive the first configuration information from the first communication device.
  • the first communication device may transmit the first configuration information to the second communication device group. That is, the first communication device may send the first configuration information to the second communication device group in a multicast manner. Alternatively, the first communication device may also send the first configuration information to at least one second communication device in the second communication device group in a unicast manner.
  • the second communication device may determine the first time-frequency resource in combination with the related information indicating the first time-frequency resource and protocol provisions.
  • the first communication device can configure the first time-frequency resource for the second communication device in the second communication device group, so that the second communication device can obtain the first time-frequency resource for sending feedback information.
  • some second communication devices may also use the same first time-frequency resource.
  • the second communication device group includes five second communication devices, three of which use the first time-frequency resource to send feedback information, and the remaining two may use other time-frequency resources to send feedback information. That is, the first time-frequency resource is a feedback resource for some second communication devices in the second communication device group.
  • the first communication device and the second communication device include hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software in combination with the modules and method steps described in the embodiments disclosed in the present application. Whether a certain function is executed by hardware or computer software drives the hardware depends on the specific application scenario and design constraints of the technical solution.
  • FIG. 7 and FIG. 8 are schematic structural diagrams of a possible communication device provided in the present application. These communication devices can be used to implement the functions of the first communication device or the second communication device in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments.
  • the communication device may be a master node as shown in FIG. 1 , or a slave node as shown in FIG. 1 , or a module (such as a chip) applied to a master node or a slave node.
  • the communication device may be the terminal device in FIG. 2a, or the network device in FIG. 2a, or a module (such as a chip) applied to the terminal device or network device.
  • the communication device may be the AP in FIG.
  • the communication device can be the display screen, microphone, speaker or mobile phone in the above-mentioned Figure 2c, or the CDC in the above-mentioned Figure 2c; or, the communication device can be the earphone or the wearable device in the above-mentioned Figure 2c, or it can be The above-mentioned mobile phone in FIG. 2c; alternatively, the communication device may be the mobile phone key and the car key in the above-mentioned FIG. 2c, or the PEPS system in the above-mentioned FIG. 2c.
  • the communication device 700 includes a processing module 701 and a transceiver module 702 .
  • the communication device 700 is configured to realize the functions of the first communication device or the second communication device in the method embodiment shown in FIG. 3 , FIG. 5 or FIG. 6 above.
  • the transceiver module 702 is used to send the first information to the second communication device group, and the second communication device group includes at least two Two communication devices; the processing module 701 is used to detect feedback information from at least one second communication device in the second communication device group in the first time-frequency resource, and the first time-frequency resource is for any one of the second communication device group Feedback resources of the second communication device; wherein, the feedback information is used to indicate that there is at least one second communication device in the second communication device group that has not correctly received the first information.
  • the processing module 701 is used to detect the first information; if the first information is not received correctly, the transceiver module 702 is used to Feedback information is sent in a time-frequency resource, the first time-frequency resource is a feedback resource for any second communication device in the second communication device group, and the second communication device group includes at least two second communication devices; wherein, the feedback The information is used to indicate that there is at least one second communication device that has not correctly received the first information in the second communication device group.
  • processing module 701 and the transceiver module 702 can be directly obtained by referring to the relevant descriptions in the method embodiment shown in FIG. 3 , and will not be repeated here.
  • processing module 701 in this embodiment of the present application may be implemented by a processor or a processor-related circuit component
  • transceiver module 702 may be implemented by a transceiver or a transceiver-related circuit component.
  • the present application further provides a communication device 800 .
  • the communication device 800 may include a processor 801 and a transceiver 802 .
  • the processor 801 and the transceiver 802 are coupled to each other.
  • the transceiver 802 may be a communication interface, an interface circuit, or an input-output interface.
  • the communication device 800 may further include a memory 803 for storing instructions executed by the processor 801 or storing input data required by the processor 801 to execute the instructions or storing data generated after the processor 801 executes the instructions.
  • the processor 801 is used to execute the functions of the above-mentioned processing module 701
  • the transceiver 802 is used to execute the functions of the above-mentioned transceiver module 702 .
  • the chip of the first communication device implements the functions of the first communication device in the above method embodiment.
  • the first communication device chip receives information from other modules (such as radio frequency modules or antennas) in the first communication device, and the information is sent to the first communication device by the second communication device; or, the first communication device chip sends information to the second communication device Other modules (such as a radio frequency module or an antenna) in a communication device send information, and the information is sent by the first communication device to the second communication device.
  • the chip of the second communication device implements the functions of the second communication device in the above method embodiment.
  • the second communication device chip receives information from other modules (such as radio frequency modules or antennas) in the second communication device, and the information is sent to the second communication device by the first communication device; or, the second communication device chip sends information to the second communication device Other modules (such as a radio frequency module or an antenna) in the second communication device send information, and the information is sent by the second communication device to the first communication device.
  • the present application provides a communication system.
  • the communication system may include the foregoing one or more first communication devices, and one or more second communication devices.
  • the first communication device can execute any method on the first communication device side
  • the second communication device can execute any method on the second communication device side.
  • the present application provides a terminal device.
  • the terminal device may be the aforementioned first communication device, or may also be the aforementioned second communication device.
  • the first communication device may execute any method on the first communication device side
  • the second communication device may execute any method on the second communication device side.
  • the terminal device can be, for example, a smart terminal, a smart phone, a smart home device, a smart manufacturing device, a robot, a drone or a smart transportation device (such as an automated guided vehicle (AGV). ) or unmanned transport vehicles, etc.) etc.
  • AGV automated guided vehicle
  • processor in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and may also be other general processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor can be a microprocessor, or any conventional processor.
  • the method steps in the embodiments of the present application may be implemented by means of hardware, or may be implemented by means of a processor executing software instructions.
  • Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory (random access memory, RAM), flash memory, read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM) , PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable read-only memory (electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM or known in the art any other form of storage medium.
  • An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium.
  • the storage medium may also be a component of the processor.
  • the processor and storage medium can be located in the ASIC. Additionally, the ASIC may be located in the first communication device or the second communication device. Of course, the processor and the storage medium may also exist in the first communication device or the second communication device as discrete components.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part as a computer program product.
  • a computer program product consists of one or more computer programs or instructions. When the computer programs or instructions are loaded and executed on the computer, the processes or functions of the embodiments of the present application are executed in whole or in part.
  • the computer can be a general purpose computer, special purpose computer, computer network, network equipment, user equipment, or other programmable apparatus.
  • Computer programs or instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, computer programs or instructions may be Wired or wireless transmission to another website site, computer, server or data center.
  • a computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrating one or more available media.
  • Available media can be magnetic media, such as floppy disks, hard disks, and magnetic tapes; optical media, such as digital video discs (digital video discs, DVDs); and semiconductor media, such as solid state drives (SSDs). ).
  • At least one means one or more, and “multiple” means two or more.
  • At least one of the following items” or similar expressions refer to any combination of these items, including any combination of single or plural items.
  • at least one item (piece) of a, b or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c ", where a, b, c can be single or multiple.
  • “And/or” describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the contextual objects are an “or” relationship; in the formulas of this application, the character “/” indicates that the contextual objects are a “division” Relationship.
  • the word “exemplary” is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as “example” is not to be construed as preferred or advantageous over other embodiments or designs. Or it can be understood that the use of the word example is intended to present a concept in a specific manner, and does not constitute a limitation to the application.

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Abstract

一种通信方法及信息处理装置，应用于短距通信领域，如智能运输、智能家居、智能制造、智能终端领域。第一通信装置(如主节点)向第二通信装置组发送第一信息，第二通信装置组包括至少两个第二通信装置(如从节点)，在第一时频资源内检测来自第二通信装置组中至少一个第二通信装置的反馈信息，反馈信息用于指示第二通信装置组中存在至少一个未正确接收到第一信息的第二通信装置，第一时频资源为第二通信装置组中任一个第二通信装置的发送反馈信息的反馈资源。第二通信装置组中的第二通信装置使用相同的第一时频资源发送反馈信息，可减小反馈信息占用的资源。当第二通信装置组中的第二通信装置较多时，可利用有限的资源尽可能的提高反馈效率。

Description

一种通信方法及信息处理装置 技术领域
本申请涉及通信技术领域，提供了一种通信方法及信息处理装置，尤其涉及短距离无线通信技术。
背景技术
随着通信技术的不断发展，更多的业务需求被提出，例如多媒体业务。例如，在一个通信域中，相同的内容需要传输给多个用户时，采用点到多点的传输相比于点到点传输的效率更高。因此，需要引入组播业务。其中，一个通信域可包括一个主节点和至少两个从节点，主节点调度从节点，从而可实现主节点与从节点之间互相传输业务数据。
组播业务可根据接收节点是否需要反馈确认字符(acknowledgement，ACK)或否定确认字符(negative acknowledgment，NACK)，分为可靠组播和不可靠组播。不可靠组播是指接收节点不需要反馈是否正确接收到发送节点发送的组播信号。可靠组播是指组内的每个接收节点都需要向发送节点反馈是否正确接收了组播信号的反馈信息，发送节点只要确定组内有一个接收节点没有正确接收到组播信号，会重新发送组播信号。对于可靠组播，每个接收节点都需要反馈是否正确接收到组播信号的反馈信息。因此，需要为每个接收节点分配不同的反馈资源，即需要为组内的每个接收节点分配不同的反馈资源的或者分配不同的等效的反馈资源(如每个接收节点分配的反馈资源是相同的，但是经过的空口信道不同，信道系数也可认为是资源的一部分，从接收节点看来，接收后的等效资源是不同的)。但是若组内的接收节点数量过多时，更多的反馈信息需要被发送，从而导致需要占用较多的反馈资源。
综上，如何利用有限的资源提高反馈效率是当前亟需解决的技术问题。
发明内容
本申请提供一种通信方法及信息处理装置，用于利用有限的资源尽可能的提高反馈效率，以提高通信性能。
第一方面，本申请提供一种通信方法，该方法可包括向包括至少两个第二通信装置的第二通信装置组发送第一信息，在第一时频资源内检测来自第二通信装置组中至少一个第二通信装置的反馈信息，第一时频资源为用于第二通信装置组中任一个第二通信装置的反馈资源，反馈信息用于指示第二通信装置组中存在至少一个未正确接收到第一信息的第二通信装置。
该方法可由第一通信装置执行，第一通信装置例如可以是无线通信中的网络设备、或通信域中的主节点、或局域无线通信系统中的接入点(access point，AP)、或网络设备中的模块(如芯片)、或主节点中的模块(如芯片)、或接入点中的模块(如芯片)等。
基于该方案，第一通信装置可以在第一时频资源内同时检测第二通信装置组中的各第二通信装置发送的反馈信息，也就是说，第二通信装置组中的各第二通信装置使用相同的第一时频资源向第一通信装置发送反馈信息，有助于减小反馈信息占用的资源，特别是当第二通信装置组中的第二通信装置的数量较多时，可以利用有限的资源尽可能的提高反馈 效率。
进一步，可选地，第二通信装置组中未正确接收到第一信息的第二通信装置向第一通信装置发送反馈信息，正确接收到反馈信息的第二通信装置不发送反馈信息。如此，有助于降低不同的第二通信装置的反馈信息之间的干扰。
在一种可能的实现方式中，第一通信装置可发送用于指示第一时频资源的第一配置信息。
通过发送第一配置信息，可指示出第二通信装置组中第二通信装置发送反馈信息的第一时频资源，有助于提高资源调度的灵活性。
在一种可能的实现方式中，第一通信装置可接收来自第二通信装置组中的至少一个第二通信装置的能力信息。
通过接收来自第二通信装置的能力信息，可基于接收到的能力信息确定出较合理的第一时频资源，实现基于能力的资源配置。
在一种可能的实现方式中，若在第一时频资源内检测到来自至少一个第二通信装置的反馈信息，该方法还包括第一通信装置发送第二信息，第二信息与第一信息相同、或第二信息是根据第一信息对应的原始信息生成的。
通过发送第二信息，可使得未正确接收到第一信息的第二通信装置重新获取到第一通信装置发送的原始信息，从而有助于提高第二通信装置接收组播信号的可靠性。具体的，若第二信息与第一信息不同，但是第一信息和第二信息是根据同样的原始信息生成，例如，更换新的调制编码方式对原始信息进行处理以得到第二信息，这样可以尽量提高第二通信装置的接收准确性，提高通信性能。
在一种可能的实现方式中，用于反馈信息传输的符号速率小于用于第一信息传输的符号速率。
通过较小的用于传输反馈信息的符号速率，有助于延长第二通信装置发送反馈信息的时间，从而有助于降低由于多径和/或不同的第二通信装置发送承载反馈信息的信号不完全同步等引起的符号之间干扰，进而可提高第一通信装置检测反馈信息的准确性。
在一种可能的实现方式中，承载反馈信息的信号由一个或多个序列组成。其中，所述一个或多个序列中的至少一个序列为预先定义或预先配置的，或按预先定义的规则得到的，或根据预先定义和/或预先配置的参数按预先定义的规则得到的。
在一种可能的实现方式中，一个或多个序列包括基于m序列、Gold序列、前导序列、第二通信装置的第一标识的序列或链路的标识的序列中的任一项或任多项的组合得到的序列。或者，可以为上述序列的任一项或者任多项的组合的序列本身。
当承载反馈信息的信号包括基于m序列得到的序列时，由于m序列具有较好的自相关性和互相关特性，因此，m序列可以有效的对抗干扰和噪声，从而可提高第一通信装置检测反馈信息的可靠性。
当承载反馈信息的信号包括基于前导序列得到的序列时，由于前导序列可以使第一通信装置较快速的获得第二通信装置发送的承载反馈信息的信号的功率，以尽快完成自动增益控制(automatic gain control，AGC)的调整和其它的功能，如确定发送端码元所使用的频率、时序估计等。
在一种可能的实现方式中，一个或多个序列包括前导序列，前导序列位于一个或多个序列的起始位置。
在一种可能的实现方式中，若一个或多个序列包括基于m序列得到的序列，第二通信装置组中不同的第二通信装置对应的m序列不同，或者，第二通信装置组中不同的第二通信装置对应的m序列的移位不同。
通过第二通信装置组中不同的第二通信装置对应不同的m序列或m序列的移位，即第二通信装置组中不同的第二通信装置发送的承载反馈信息的信号不同。如此，一方面可降低因信道影响造成反向相消，从而使得第一通信装置检测不到承载反馈信息的信号；另一方面，可使得第一通信装置准确的确定出是哪个第二通信装置未正确接收到第一信息。
第二通信装置组中不同的第二通信装置对应的m序列的移位不同时，承载反馈信息的信号包括至少两个连续的移位相同的m序列。
通过两个连续的移位相同的m序列，第一通信装置可用一个m序列延迟相关，即可检测到反馈信息的存在，实现简单。
在一种可能的实现方式中，承载反馈信息的信号一个或多个序列包括N个子序列，N为大于1的整数；以N个子序列中的任一个子序列为例，即以第i个子序列为例，第二通信装置组中不同的第二通信装置对应的第i个子序列的长度相同、且在一个或多个序列中的起始位置相同，第i个子序列满足A i×b i，b i为根据第二通信装置的第二标识得到的长度为N的复数序列中的第i个复数，A i为公共复数序列集合中的第i个公共复数序列，第二通信装置组中不同的第二通信装置对应的公共复数序列集合相同。
通过第二通信装置组中不同的第二通信装置对应的第i个子序列的长度相同、且在一个或多个序列中的起始位置相同，可以实现不同的第二通信装置发送的承载反馈信息的信号中的第i个子序列满足的A i×b i是对齐的。当不同的第二通信装置的第二标识不同时，不同的第二通信装置对应的长度为N的复数序列中至少一个复数是不同，从而有助于避免特定叠加方式下反向相消导致第一通信装置无法检测到反馈信息。
在一种可能的实现方式中，第一通信装置还可发送第三配置信息，第三配置信息用于指示N的取值。
通过发送第三配置信息指示复数序列的长度N的取值，有助于避免承载反馈信息的信号太长导致资源浪费。而且，通过第一通信装置合理配置N的取值，可以实现不同的第二标识对应不同的长度为N的复数序列，从而可实现不同的第二通信装置对应的长度为N的复数序列不同。
在一种可能的实现方式中，公共复数序列集合为预定义或预配置的。
在一种可能的实现方式中，第i个公共复数序列可由经过相位调制的第一比特序列组成，或者可由前导序列和经过相位调制的第一比特序列组成；其中，第一比特序列包括m序列、Gold序列、或第二通信装置组的标识的序列中的至少一项。
进一步，可选地，若第i个公共复数序列由前导序列和经过相位调制的第一比特序列组成，前导序列位于经过相位调制的第一比特序列之前。也可以理解为，第i个公共复数序列依次由预先定义的前导序列和经过相位调制的第一比特序列组成。
在一种可能的实现方式中，第一通信装置还可发送第二配置信息，第二配置信息包括第二通信装置组中的至少一个第二通信装置的第二标识的信息。
通过发送第二配置信息，第一通信装置可为第二通信装置组中的至少一个第二通信装置配置第二标识。进一步，第一通信装置可以通过第二配置信息为不同的第二通信装置配置不同的第二标识。如此，有助于降低因信道影响造成反向相消使得第一通信装置检测不 到承载反馈信息的信号；而且，由于不同的第二通信装置对应不同的第二标识，可使得第一通信装置准确的确定出是哪个第二通信装置未正确接收到第一信息。
在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的一个或多个序列相同。
通过第二通信装置组中不同的第二通信装置对应的一个或多个序列相同，实现简单，简化配置过程。
进一步，可选地，一个或多个序列包括基于m序列得到的序列，第二通信装置组中不同的第二通信装置对应的m序列相同；或者，第二通信装置组中不同的第二通信装置对应的m序列的移位相同。
在一种可能的实现方式中，方法还包括第一通信装置发送第一指示信息，第一指示信息用于指示第二通信装置对应的一个或多个序列中的至少一个序列。
进一步，可选地，若至少一个序列包括基于m序列得到的序列，第一指示信息还用于指示第二通信装置对应的基于m序列或者m序列的移位得到的序列。
第二方面，本申请提供一种通信方法，该方法可包括检测第一信息，若未正确接收到第一信息，在第一时频资源内向第一通信装置发送反馈信息，该第一时频资源为用于包括至少两个第二通信装置的第二通信装置组中任一个第二通信装置的反馈资源，即第二通信装置可在第一时频资源发送反馈信息，反馈信息用于指示属于第二通信装置组的第二通信装置未正确接收到第一信息的第二通信装置。
该方法可由第二通信装置执行，第二通信装置例如可以是无线通信中的终端设备、或通信域中的从节点、或无线通信系统中的站点、或终端设备中的模块(如芯片)、或从节点中的模块(如芯片)、或站点中的模块(如芯片)等。
基于该方案，第二通信装置组中的各第二通信装置使用相同的第一时频资源向第一通信装置发送反馈信息，有助于减小反馈信息占用的资源，特别是当第二通信装置组中的第二通信装置的数量较多时，可以利用有限的资源尽可能的提高反馈效率。
进一步，第二通信装置组中未正确接收到第一信息的第二通信装置向第一通信装置发送反馈信息，正确接收到反馈信息的第二通信装置不发送反馈信息。如此，有助于降低不同的第二通信装置的反馈信息之间的干扰。
在一种可能的实现方式中，方法还可包括第二通信装置接收来自第一通信装置的第一配置信息，第一配置信息用于指示第一时频资源。
通过接收到的第一配置信息，第二通信装置可获得发送反馈信息的第一时频资源，有助于提高资源调度的灵活性。
在一种可能的实现方式中，该方法还可包括第二通信装置向所述第一通信装置发送第二通信装置的能力信息。
通过向第一通信装置发送能力信息，可使得第一通信装置可以基于能力信息确定出较合理的第一时频资源，实现基于能力的资源配置。
在一种可能的实现方式中，该方法还可包括第二通信装置接收来自第一通信装置的第二信息，第二信息与第一信息相同、或第二信息与第一信息对应的相同的原始信息。
通过接收第二信息，可使得未正确接收到第一信息的第二通信装置重新获取到第一通信装置发送的原始信息，从而有助于提高第二通信装置接收组播信号的可靠性。具体的，若第二信息与第一信息不同，但是第一信息和第二信息是基于同样的原始信息生成的，例 如，更换新的调制编码方式对原始信息进行处理以得到第二信息，这样可以尽量提高第二通信装置的接收准确性，提高通信性能。
在一种可能的实现方式中，用于反馈信息传输的符号速率小于用于第一信息传输的符号速率。
通过较小的用于传输反馈信息的符号速率，有助于延长第二通信装置发送反馈信息的时间，从而有助于降低由于多径和/或不同的第二通信装置发送承载反馈信息的信号不完全同步等引起的符号之间干扰，进而可提高第一通信装置检测反馈信息的准确性。
在一种可能的实现方式中，承载反馈信息的信号由一个或多个序列组成。其中，所述一个或多个序列中的至少一个序列为预先定义或预先配置的，或按预先定义的规则得到的，或根据预先定义和/或预先配置的参数按预先定义的规则得到的。
在一种可能的实现方式中，一个或多个序列包括基于m序列、Gold序列、前导序列、第二通信装置的第一标识的序列或链路的标识的序列中的任一项或任多项的组合得到的序列。或者，可以为上述序列的任一项或者任多项的组合的序列本身。
当承载反馈信息的信号包括基于m序列得到的序列时，由于m序列具有较好的自相关性和互相关特性，因此，m序列可以有效的对抗干扰和噪声，从而可提高第一通信装置检测反馈信息的可靠性。
当承载反馈信息的信号包括基于前导序列得到的序列时，由于前导序列可以使第一通信装置较快速的获得第二通信装置发送的承载反馈信息的信号的功率，以尽快完成AGC的调整和其它的功能，如确定发送端码元所使用的频率、时序估计等。
在一种可能的实现方式中，一个或多个序列包括前导序列，前导序列位于一个或多个序列的起始位置。
在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的一个或多个序列中至少一个序列不同。
在一种可能的实现方式中，若一个或多个序列包括m序列，第二通信装置组中不同的第二通信装置对应的m序列不同，或者，第二通信装置组中不同的第二通信装置对应的m序列的移位不同。
通过第二通信装置组中不同的第二通信装置对应不同的m序列或m序列的移位，即第二通信装置组中不同的第二通信装置发送的承载反馈信息的信号不同。如此，一方面可降低因信道影响造成反向相消，从而使得第一通信装置检测不到承载反馈信息的信号；另一方面，可使得第一通信装置准确的确定出是哪个第二通信装置未正确接收到第一信息。
进一步，可选地，第二通信装置组中不同的第二通信装置对应的m序列的移位不同时，承载反馈信息的信号包括至少两个连续的移位相同的m序列。
通过两个连续的移位相同的m序列，第一通信装置可用一个m序列延迟相关，即可检测到反馈信息的存在，实现简单。
在一种可能的实现方式中，一个或多个序列包括N个子序列，N为大于1的整数；以N个子序列中的任一个子序列为例，即以第i个子序列为例，第二通信装置组中不同的第二通信装置对应的第i个子序列的长度相同、且在一个或多个序列中的起始位置相同，第i个子序列满足A i×b i，b i为根据第二通信装置的第二标识得到的长度为N的复数序列中的第i个复数，A i为公共复数序列集合中的第i个公共复数序列，第二通信装置组中不同的第二通信装置对应的公共复数序列集合相同。
通过第二通信装置组中不同的第二通信装置对应的第i个子序列的长度相同、且在一个或多个序列中的起始位置相同，可以实现不同的第二通信装置发送的承载反馈信息的信号中的第i个子序列满足的A i×b i是对齐的。当不同的第二通信装置的第二标识不同时，不同的第二通信装置对应的长度为N的复数序列中至少一个复数是不同，从而有助于避免特定叠加方式下反向相消导致第一通信装置无法检测到反馈信息。
在一种可能的实现方式中，公共复数序列集合为预定义或配置的。
在一种可能的实现方式中，第i个公共复数序列可由经过相位调制的第一比特序列组成，或者可由前导序列和经过相位调制的第一比特序列组成；其中，第一比特序列包括m序列、Gold序列、或第二通信装置组的标识的序列中的至少一项。
进一步，可选地，若第i个公共复数序列由前导序列和经过相位调制的第一比特序列组成，前导序列位于经过相位调制的第一比特序列之前。也可以理解为，第i个公共复数序列依次由预先定义的前导序列和经过相位调制的第一比特序列组成。
在一种可能的实现方式中，该方法还可包括第二通信装置接收来自第一通信装置第二配置信息，第二配置信息包括第二通信装置的第二标识的信息。
通过接收第二配置信息，第二通信装置可获得第二标识。当第二通信装置组中不同的第二通信装置获得不同的第二标识时，有助于降低因信道影响造成反向相消使得第一通信装置检测不到承载反馈信息的信号；而且，由于不同的第二通信装置对应不同的第二标识，可使得第一通信装置准确的确定出是哪个第二通信装置未正确接收到第一信息。
在一种可能的实现方式中，第二通信装置也可以随机生成第二通信装置的第二标识。
在一种可能的实现方式中，方法还包括第二通信装置接收来自第一通信装置第三配置信息，第三配置信息用于指示N的取值。
通过第三配置信息，第二通信装置可获得指示复数序列的长度N，有助于避免承载反馈信息的信号太长导致资源浪费。而且，通过第一通信装置合理配置N的取值，可以实现不同的第二标识对应不同的长度为N的复数序列，从而可实现不同的第二通信装置对应的长度为N的复数序列不同。
在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的一个或多个序列相同。
在一种可能的实现方式中，若一个或多个序列包括m序列，第二通信装置组中不同的第二通信装置对应的m序列相同，或者，第二通信装置组中不同的第二通信装置对应的m序列的移位相同。
通过第二通信装置组中不同的第二通信装置对应的一个或多个序列相同，实现简单，简化配置过程。
在一种可能的实现方式中，方法还包括第二通信装置接收来自第一通信装置的第一指示信息，第一指示信息用于指示第二通信装置对应的一个或多个序列中的至少一个序列。
在一种可能的实现方式中，至少一个序列包括基于m序列得到的序列，第一指示信息还用于指示第二通信装置对应的基于m序列或者m序列的移位得到的序列。
第三方面，本申请提供一种通信装置，该通信装置用于实现上述第一方面或第一方面中的任意一种方法，或者用于实现上述第二方面或第二方面中的任意一种方法，包括相应的功能模块，分别用于实现以上方法中的步骤。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能的实现方式中，该通信装置可以是第一通信装置(例如网络设备)，或者是可用于第一通信装置的部件，例如芯片或芯片系统或者电路。有益效果可参见上述第一方面的描述，此处不再赘述。该通信装置可以包括：收发器和处理器。该处理器可被配置为支持该通信装置执行以上所示第一通信装置的相应功能，该收发器用于支持该通信装置与其它通信装置(如第二通信装置)之间的通信。其中，收发器可以为独立的接收器、独立的发射器、集成收发功能的收发器、或者是接口电路。可选地，该通信装置还可以包括存储器，该存储器可以与处理器耦合，其保存该通信装置必要的程序指令和数据。
在一种可能的实现方式中，该通信装置可以是信息处理装置，或者该通信装置包括信息处理装置。
其中，收发器用于向包括至少两个第二通信装置的第二通信装置组发送第一信息，处理器用于在第一时频资源内检测来自第二通信装置组中至少一个第二通信装置的反馈信息，第一时频资源为用于第二通信装置组中任一个第二通信装置的反馈资源，反馈信息用于指示第二通信装置组中存在至少一个未正确接收到第一信息的第二通信装置。
在一种可能的实现方式中，收发器还用于发送用于指示第一时频资源的第一配置信息。
在一种可能的实现方式中，收发器还用于接收来自第二通信装置组中的至少一个第二通信装置的能力信息。
在一种可能的实现方式中，若在第一时频资源内检测到来自至少一个第二通信装置的反馈信息，收发器还用于发送第二信息，第二信息与第一信息相同、或第二信息是根据第一信息对应的原始信息生成的。
在一种可能的实现方式中，用于反馈信息传输的符号速率小于用于第一信息传输的符号速率。
在一种可能的实现方式中，承载反馈信息的信号由一个或多个序列组成。其中，所述一个或多个序列中的至少一个序列为预先定义或预先配置的，或按预先定义的规则得到的，或根据预先定义和/或预先配置的参数按预先定义的规则得到的。
在一种可能的实现方式中，一个或多个序列包括基于m序列、Gold序列、前导序列、第二通信装置的第一标识的序列或链路的标识的序列中的任一项或任多项的组合得到的序列。
在一种可能的实现方式中，一个或多个序列包括前导序列，前导序列位于一个或多个序列的起始位置。
在一种可能的实现方式中，若一个或多个序列包括基于m序列得到的序列，第二通信装置组中不同的第二通信装置对应的m序列不同，或者，第二通信装置组中不同的第二通信装置对应的m序列的移位不同。
进一步，可选地，第二通信装置组中不同的第二通信装置对应的m序列的移位不同时，承载反馈信息的信号包括至少两个连续的移位相同的m序列。
在一种可能的实现方式中，承载反馈信息的信号一个或多个序列包括N个子序列，N为大于1的整数；以N个子序列中的任一个子序列为例，即以第i个子序列为例，第二通信装置组中不同的第二通信装置对应的第i个子序列的长度相同、且在一个或多个序列中的起始位置相同，第i个子序列满足A i×b i，b i为根据第二通信装置的第二标识得到的长度为N的复数序列中的第i个复数，A i为公共复数序列集合中的第i个公共复数序列，第二通信装置组中不同的第二通信装置对应的公共复数序列集合相同。
在一种可能的实现方式中，收发器还用于发送第三配置信息，第三配置信息用于指示N。
在一种可能的实现方式中，第i个公共复数序列为预定义或预配置的公共复数序列。也可以理解为，公共复数序列集合为预定义或配置的。
在一种可能的实现方式中，第i个公共复数序列可由经过相位调制的第一比特序列组成，或者可由前导序列和经过相位调制的第一比特序列组成；其中，第一比特序列包括m序列、Gold序列、或第二通信装置组的标识的序列中的至少一项。
进一步，可选地，若第i个公共复数序列由前导序列和经过相位调制的第一比特序列组成，前导序列位于经过相位调制的第一比特序列之前。也可以理解为，第i个公共复数序列依次由预先定义的前导序列和经过相位调制的第一比特序列组成。
在一种可能的实现方式中，收发器还用于发送第二配置信息，第二配置信息包括第二通信装置组中的至少一个第二通信装置的第二标识的信息。
在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的一个或多个序列相同。
进一步，可选地，一个或多个序列包括基于m序列得到的序列，第二通信装置组中不同的第二通信装置对应的m序列相同；或者，第二通信装置组中不同的第二通信装置对应的m序列的移位相同。
在一种可能的实现方式中，收发器还用于发送第一指示信息，第一指示信息用于指示第二通信装置对应的一个或多个序列中的至少一个序列。
进一步，可选地，若至少一个序列包括基于m序列得到的序列，第一指示信息还用于指示第二通信装置对应的基于m序列或者m序列的移位得到的序列。
在另一种可能的实现方式中，该通信装置可以是第二通信装置(例如终端设备)，或者是可用于第二通信装置中的模块，例如芯片或芯片系统或者电路。有益效果可参见上述第二方面的描述，此处不再赘述。该通信装置可以包括：收发器和处理器。该处理器可被配置为支持该通信装置执行以上所示第二通信装置的相应功能，该收发器用于支持该通信装置与其它通信装置(如第一通信装置)等之间的通信。其中，收发器可以为独立的接收器、独立的发射器、集成收发功能的收发器、或者是接口电路。可选地，该通信装置还可以包括存储器，该存储器可以与处理器耦合，其保存该通信装置必要的程序指令和数据。
其中，处理器用于检测第一信息；若未正确接收到第一信息，收发器用于在第一时频资源内向第一通信装置发送反馈信息，该第一时频资源为用于包括至少两个第二通信装置的第二通信装置组中任一个第二通信装置的反馈资源，反馈信息用于指示属于第二通信装置组的第二通信装置未正确接收到第一信息。
在一种可能的实现方式中，收发器还用于接收来自第一通信装置的第一配置信息，第一配置信息用于指示第一时频资源。
在一种可能的实现方式中，收发器还用于向所述第一通信装置发送第二通信装置的能力信息。
在一种可能的实现方式中，收发器还用于接收来自第一通信装置的第二信息，第二信息与第一信息相同、或第二信息与第一信息对应相同的原始信息。
在一种可能的实现方式中，用于反馈信息传输的符号速率小于用于第一信息传输的符号速率。
在一种可能的实现方式中，承载反馈信息的信号由一个或多个序列组成。其中，所述一个或多个序列中的至少一个序列为预先定义或预先配置的，或按预先定义的规则得到的，或根据预先定义和/或预先配置的参数按预先定义的规则得到的。
在一种可能的实现方式中，一个或多个序列包括基于m序列、Gold序列、前导序列、第二通信装置的第一标识的序列或链路的标识的序列中的任一项或人多项的组合得到的序列。
在一种可能的实现方式中，一个或多个序列包括前导序列，前导序列位于一个或多个序列的起始位置。
在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的一个或多个序列中至少一个序列不同。
在一种可能的实现方式中，若一个或多个序列包括基于m序列得到的序列，第二通信装置组中不同的第二通信装置对应的m序列不同，或者，第二通信装置组中不同的第二通信装置对应的m序列的移位不同。
在一种可能的实现方式中，一个或多个序列包括N个子序列，N为大于1的整数；以N个子序列中的任一个子序列为例，即以第i个子序列为例，第二通信装置组中不同的第二通信装置对应的第i个子序列的长度相同、且在一个或多个序列中的起始位置相同，第i个子序列满足A i×b i，b i为根据第二通信装置的第二标识得到的长度为N的复数序列中的第i个复数，A i为公共复数序列集合中的第i个公共复数序列，第二通信装置组中不同的第二通信装置对应的公共复数序列集合相同。
在一种可能的实现方式中，公共复数序列集合为预定义或配置的。
在一种可能的实现方式中，第i个公共复数序列可由经过相位调制的第一比特序列组成，或者可由前导序列和经过相位调制的第一比特序列组成；其中，第一比特序列包括m序列、Gold序列、或第二通信装置组的标识的序列中的至少一项。
进一步，可选地，若第i个公共复数序列由前导序列和经过相位调制的第一比特序列组成，前导序列位于经过相位调制的第一比特序列之前。也可以理解为，第i个公共复数序列依次由预先定义的前导序列和经过相位调制的第一比特序列组成。
在一种可能的实现方式中，收发器还用于接收来自第一通信装置第二配置信息，第二配置信息包括第二通信装置的第二标识的信息。
在一种可能的实现方式中，处理器用于随机生成第二通信装置的第二标识。
在一种可能的实现方式中，收发器还用于接收来自第一通信装置第三配置信息，第三配置信息用于指示N的取值。
在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的一个或多个序列相同。
在一种可能的实现方式中，若一个或多个序列包括基于m序列得到的序列，第二通信装置组中不同的第二通信装置对应的m序列相同，或者，第二通信装置组中不同的第二通信装置对应的m序列的移位相同。
在一种可能的实现方式中，收发器还用于接收来自第一通信装置的第一指示信息，第一指示信息用于指示第二通信装置对应的一个或多个序列中的至少一个序列。
在一种可能的实现方式中，至少一个序列包括基于m序列得到的序列，第一指示信息还用于指示第二通信装置对应的基于m序列或者m序列的移位得到的序列。
第四方面，本申请提供一种通信装置，该通信装置用于实现上述第一方面或第一方面中的任意一种方法，或者用于实现上述第二方面或第二方面中的任意一种方法，包括相应的功能模块，分别用于实现以上方法中的步骤。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能的实施方式中，该通信装置还可以是第一通信装置(如网络设备)，该通信装置可以包括收发模块和处理模块，这些模块可以执行上述方法示例中第一通信装置的相应功能。
在一种可能的实现方式中，该通信装置可以是信息处理装置，或者该通信装置包括信息处理装置。
其中，收发模块用于向包括至少两个第二通信装置的第二通信装置组发送第一信息，处理模块用于在第一时频资源内检测来自第二通信装置组中至少一个第二通信装置的反馈信息，第一时频资源为用于第二通信装置组中任一个第二通信装置的反馈资源，反馈信息用于指示第二通信装置组中存在至少一个未正确接收到第一信息的第二通信装置。
在一种可能的实现方式中，收发模块还用于发送用于指示第一时频资源的第一配置信息。
在一种可能的实现方式中，收发模块还用于接收来自第二通信装置组中的至少一个第二通信装置的能力信息。
在一种可能的实现方式中，若在第一时频资源内检测到来自至少一个第二通信装置的反馈信息，收发模块还用于发送第二信息，第二信息与第一信息相同、或第二信息是根据第一信息对应的原始信息生成的。
在一种可能的实现方式中，用于反馈信息传输的符号速率小于用于第一信息传输的符号速率。
在一种可能的实现方式中，承载反馈信息的信号由一个或多个序列组成。其中，所述一个或多个序列中的至少一个序列为预先定义或预先配置的，或按预先定义的规则得到的，或根据预先定义和/或预先配置的参数按预先定义的规则得到的。
在一种可能的实现方式中，一个或多个序列包括基于m序列、Gold序列、前导序列、第二通信装置的第一标识的序列或链路的标识的序列中的任一项或任多项的组合得到的序列。
在一种可能的实现方式中，一个或多个序列包括前导序列，前导序列位于一个或多个序列的起始位置。
在一种可能的实现方式中，若一个或多个序列包括基于m序列得到的序列，第二通信装置组中不同的第二通信装置对应的m序列不同，或者，第二通信装置组中不同的第二通信装置对应的m序列的移位不同。
进一步，可选地，第二通信装置组中不同的第二通信装置对应的m序列的移位不同时，承载反馈信息的信号包括至少两个连续的移位相同的m序列。
通过两个连续的移位相同的m序列，第一通信装置可用一个m序列延迟相关，即可检测到反馈信息的存在，实现简单。
在一种可能的实现方式中，承载反馈信息的信号一个或多个序列包括N个子序列，N为大于1的整数；以N个子序列中的任一个子序列为例，即以第i个子序列为例，第二通信装置组中不同的第二通信装置对应的第i个子序列的长度相同、且在一个或多个序列中 的起始位置相同，第i个子序列满足A i×b i，b i为根据第二通信装置的第二标识得到的长度为N的复数序列中的第i个复数，A i为公共复数序列集合中的第i个公共复数序列，第二通信装置组中不同的第二通信装置对应的公共复数序列集合相同。
在一种可能的实现方式中，收发模块还用于发送第三配置信息，第三配置信息用于指示N。
在一种可能的实现方式中，公共复数序列集合为预定义或配置的。
在一种可能的实现方式中，第i个公共复数序列可由经过相位调制的第一比特序列组成，或者可由前导序列和经过相位调制的第一比特序列组成；其中，第一比特序列包括m序列、Gold序列、或第二通信装置组的标识的序列中的至少一项。
进一步，可选地，若第i个公共复数序列由前导序列和经过相位调制的第一比特序列组成，前导序列位于经过相位调制的第一比特序列之前。也可以理解为，第i个公共复数序列依次由预先定义的前导序列和相位调制的第一比特序列组成。
在一种可能的实现方式中，收发模块还用于发送第二配置信息，第二配置信息包括第二通信装置组中的至少一个第二通信装置的第二标识的信息。
在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的一个或多个序列相同。
进一步，可选地，一个或多个序列包括基于m序列得到的，第二通信装置组中不同的第二通信装置对应的m序列相同；或者，第二通信装置组中不同的第二通信装置对应的m序列的移位相同。
在一种可能的实现方式中，收发模块还用于发送第一指示信息，第一指示信息用于指示第二通信装置对应的一个或多个序列中的至少一个序列。
进一步，可选地，若至少一个序列包括基于m序列得到的序列，第一指示信息用于指示第二通信装置对应的基于m序列或者m序列的移位得到的序列。
在另一种可能的实施方式中，该通信装置可为第二通信装置(例如终端设备)，该通信装置可以括处理模块和收发模块，这些模块可以执行上述方法示例中第二通信装置的相应功能。
其中，收发模块用于检测第一信息；收发模块与处理模块协作，还用于若未正确接收到第一信息，在第一时频资源内发送反馈信息，该第一时频资源为用于包括至少两个第二通信装置的第二通信装置组中任一个第二通信装置的反馈资源，反馈信息用于指示第二通信装置组中存在至少一个未正确接收到第一信息的第二通信装置。
在一种可能的实现方式中，收发模块还用于接收来自第一通信装置的第一配置信息，第一配置信息用于指示第一时频资源。
在一种可能的实现方式中，收发模块还用于发送能力信息。
在一种可能的实现方式中，收发模块还用于接收来自第一通信装置的第二信息，第二信息与第一信息相同、或第二信息与第一信息对应相同的原始信息。
在一种可能的实现方式中，用于反馈信息传输的符号速率小于用于第一信息传输的符号速率。
在一种可能的实现方式中，承载反馈信息的信号由一个或多个序列组成。其中，所述一个或多个序列中的至少一个序列为预先定义或预先配置的，或按预先定义的规则得到的，或根据预先定义和/或预先配置的参数按预先定义的规则得到的。
在一种可能的实现方式中，一个或多个序列包括基于m序列、Gold序列、前导序列、第二通信装置的第一标识的序列或链路的标识的序列中的任一项或人多项的组合得到的序列。
在一种可能的实现方式中，一个或多个序列包括前导序列，前导序列位于一个或多个序列的起始位置。
在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的一个或多个序列中至少一个序列不同。
在一种可能的实现方式中，若一个或多个序列包括基于m序列得到的序列，第二通信装置组中不同的第二通信装置对应的m序列不同，或者，第二通信装置组中不同的第二通信装置对应的m序列的移位不同。
在一种可能的实现方式中，一个或多个序列包括N个子序列，N为大于1的整数；以N个子序列中的任一个子序列为例，即以第i个子序列为例，第二通信装置组中不同的第二通信装置对应的第i个子序列的长度相同、且在一个或多个序列中的起始位置相同，第i个子序列满足A i×b i，b i为根据第二通信装置的第二标识得到的长度为N的复数序列中的第i个复数，A i为公共复数序列集合中的第i个公共复数序列，第二通信装置组中不同的第二通信装置对应的公共复数序列集合相同。
在一种可能的实现方式中，公共复数序列集合为预定义或配置的。
在一种可能的实现方式中，第i个公共复数序列可由经过相位调制的第一比特序列组成，或者可由前导序列和经过相位调制的第一比特序列组成；其中，第一比特序列包括m序列、Gold序列、或第二通信装置组的标识的序列中的至少一项。
进一步，可选地，若第i个公共复数序列由前导序列和经过相位调制的第一比特序列组成，前导序列位于经过相位调制的第一比特序列之前。也可以理解为，第i个公共复数序列依次由预先定义的前导序列和经过相位调制的第一比特序列组成。
在一种可能的实现方式中，收发模块还用于接收来自第一通信装置第二配置信息，第二配置信息包括第二通信装置的第二标识的信息。
在一种可能的实现方式中，处理模块，用于随机生成第二通信装置的第二标识。
在一种可能的实现方式中，收发模块还用于接收来自第一通信装置第三配置信息，第三配置信息用于指示N的取值。
在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的一个或多个序列相同。
在一种可能的实现方式中，若一个或多个序列包括基于m序列得到的序列，第二通信装置组中不同的第二通信装置对应的m序列相同，或者，第二通信装置组中不同的第二通信装置对应的m序列的移位相同。
在一种可能的实现方式中，收发模块还用于接收来自第一通信装置的第一指示信息，第一指示信息用于指示第二通信装置对应的一个或多个序列中的至少一个序列。
在一种可能的实现方式中，至少一个序列包括基于m序列得到的序列，第一指示信息还用于指示第二通信装置对应的基于m序列或者m序列的移位得到的序列。
第五方面，本申请提供一种通信系统，该通信系统包括第一通信装置和第二通信装置组。其中，第一通信装置可以用于执行上述第一方面或第一方面中的任意一种方法，第二通信装置组中的第二通信装置可以用于执行上述第二方面或第二方面中的任意一种方法。 或者，该通信系统可包括主节点和从节点。其中，主节点可以用于执行上述第一方面或第一方面中的任意一种方法，从节点可以用于执行上述第二方面或第二方面中的任意一种方法。
第六方面，本申请提供一种芯片，该芯片包括至少一个处理器和接口电路，芯片用于执行上述第一方面或第一方面中的任意一种方法，或者用于执行上述第二方面或第二方面中的任意一种方法。
第七方面，本申请提供一种终端设备，该终端设备可包括上述第四方面或第四方面中的任意一种通信装置，或者也可以包括上述第五方面或第五方面中的任意一种通信装置。
第八方面，本申请提供一种计算机可读存储介质，计算机可读存储介质中存储有计算机程序或指令，当计算机程序或指令被通信装置执行时，使得该通信装置执行上述第一方面或第一方面的任意可能的实现方式中的方法、或者使得该通信装置执行上述第二方面或第二方面的任意可能的实现方式中的方法。
第九方面，本申请提供一种计算机程序产品，该计算机程序产品包括计算机程序或指令，当该计算机程序或指令被通信装置执行时，使得该通信装置执行上述第一方面或第一方面的任意可能的实现方式中的方法、或者使得该通信装置执行上述第二方面或第二方面的任意可能的实现方式中的方法。
附图说明
图1为本申请提供的一种通信系统架构示意图；
图2a为本申请提供的一种可能的应用场景示意图；
图2b为本申请提供的一种智能终端内无线通信场景的示意图；
图2c为本申请提供的一种局域无线通信场景的示意图；
图2d为本申请提供的一种侧行链路通信场景的示意图；
图3为本申请提供的一种通信方法的方法流程示意图；
图4为本申请提供的一种承载反馈信息的一个或多个信号对应的前导序列和m序列的位置关系示意图；
图5为本申请提供的一种第二通信装置获得N个子序列的方法流程示意图；
图6为本申请提供的一种第二通信装置获取第一时频资源的方法流程示意图；
图7为本申请提供的一种通信装置的结构示意图；
图8为本申请提供的一种通信装置的结构示意图。
具体实施方式
下面将结合附图，对本申请实施例进行详细描述。
图1是本申请的可应用的一种通信系统的架构示意图。该通信系统可包括主节点及至少一个从节点。图1以包括两个从节点为例示例的。主节点与每个从节点可通过无线或有线的方式相互通信。主节点和从节点可以理解为是在逻辑功能上区分的两类具有通信功能的通信装置。在一种可能的示例中，主节点和从节点属于同一通信域。主节点可以管理通信域的资源(例如时域资源、频域资源等)，并具有为主节点和从节点之间的通信链路调度资源的功能。从节点听从主节点的调度，使用主节点分配的时频资源与主节点通信。主 节点可以向多个从节点发送相同的信息，即组播信息。
主节点与从节点之间互相传输的信息可包括业务数据(如组播数据)、信令以及一些信号。其中，信令例如可包括物理层信令或高层信令等。信号例如可包括同步信号、参考信号、信道估计信号、信道探测信号、相位跟踪信号、定位信号等一种或多种功能的信号。
基于图1所示的通信系统架构，可应用于广域无线通信场景(可参见下述图2a)，例如可包括网络设备与多个终端设备之间的通信。或者也可以应用于局域无线通信场景(可参见下述图2b)，例如可包括接入点(access point，AP)与多个站点(station)之间的通信等。或者也可以应用于车内无线通信场景(可参见下述图2c)，例如可包括车机(如汽车座舱域控制器(cockpit domain controller，CDC))与音箱、麦克、显示屏、手机等之间的通信；再比如，手机与耳机等穿戴式设备之间的通信；再比如，无钥匙进入及启动系统与手机钥匙、车钥匙之间的通信。
请参阅图2a，为本申请提供的一种可能的应用场景示意图。该应用场景以包括一个网络设备和两个终端设备为例。终端设备通过无线的方式与网络设备相互通信。网络设备可作为主节点，两个终端设备作为从节点。网络设备可为终端设备分配时频资源，终端设备听从网络设备的调度。
网络设备是终端设备通过无线方式接入到该通信系统中的接入设备，可为终端设备提供无线通信功能。可以是基站(base station)、演进型基站(evolved NodeB，eNodeB)、传输(发送接收)点(transmission reception point，TRP)、5G通信系统中的下一代基站(next generation NodeB，gNB)、未来通信系统中的基站或无线保真(wireless-fidelity，WiFi)系统中的接入节点等；也可以是完成基站部分功能的模块或单元，例如，可以是集中式单元(central unit，CU)，也可以是分布式单元(distributed unit，DU)。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。
终端设备也可以称为终端、用户设备(user equipment，UE)、移动台、移动终端等。终端设备可以是手机、平板电脑、带无线收发功能的电脑、虚拟现实终端设备、增强现实终端设备、工业控制中的无线终端、无人驾驶中的无线终端、远程手术中的无线终端、智能电网中的无线终端、运输安全中的无线终端、智慧城市中的无线终端、智慧家庭中的无线终端等等。本申请对终端设备所采用的具体技术和具体设备形态不做限定。
请参阅图2b，为本申请提供的一种智能终端内无线通信场景的示意图，即另一种可能的应用场景。智能终端例如可以是车辆，车辆包括但不限于无人车、智能车(如自动导引运输车(automated guided vehicle，AGV))、电动车、数字汽车、智能制造车等。车内无线通信场景中存在多个通信域，一个通信域可包括一个主节点和至少一个从节点。在图2b中，手机、耳机和穿戴式设备属于一个通信域，例如称为第一通信域，其中手机作为主节点，耳机和穿戴式设备作为从节点；座舱域控制器(cockpit domain controller，CDC)、显示屏、麦克、音箱和手机属于一个通信域，例如称为第二通信域，其中CDC作为主节点，显示屏、麦克、音箱和手机作为从节点；无钥匙进入及启动(passive entry passive start，PEPS)系统、手机钥匙和车钥匙属于一个通信域，例如称为第三通信域，其中PEPS系统作为主节点，手机钥匙和车钥匙作为从节点。应理解，车内划分为多个通信域时，划分依据的因素可能有多种。例如可以根据车载设备所完成的功能来进行划分。进一步地，有几个车载设备用于协同完成某种功能(例如，动力功能)，则可以将这几个车载设备划分为一个通信域。再比如，可以根据车载设备所在车辆内的空间位置划分。再比如，可以根据车载设 备所在车辆内的空间位置和车载设备协同完成的功能等因素划分。再比如，也可以从资源的角度划分通信域。例如，可以将一个节点分配的用于该节点与其它节点通信的资源称为一个通信域，则该节点为该通信域的主节点，使用该通信域(资源)与该节点通信的其它节点为该通信域的从节点。应理解，图2b所示的通信域仅是一种示例。另外，各个通信域中还可以包括其他车载设备，例如，第三通信域中还可以包括车身控制模块(body control module，BCM)等。
需要说明的是，一个通信域的主节点也可以作为另一个通信域的从节点，例如，第一通信域中的手机可以作为第二通信域的从节点。
请参阅图2c，为本申请的一种局域无线通信场景的示意图。该应用场景以包括一个接入点(access point，AP)和两个站点(station)为例。其中，AP作为主节点，站点作为从节点。站点可通过无线保真(wireless fidelity，Wi-Fi)接入AP，在图2c中，站点以手机为例。
需要说明的是，上述系统架构以及应用场景仅为示意性说明，并不构成对本申请所提供的技术方案的限定。例如，上述图1所示的系统架构还可以应用于V2X通信场景，可参考上述图2d，三个终端设备之间可通过侧行链路(sidelink，SL)通信。在该场景下，用于调度资源的终端设备可以作为主节点，用于听从调度资源的终端设备可以作为从节点。
基于上述内容，主节点向从节点发送信息，该过程视为下行传输过程；从节点向主节点发送信息，该过程视为上行传输过程。另外，如果具有最高优先级的通信域的主节点向其他通信域的主节点发送信息，该过程也可以视为下行传输过程(此时，其他通信域的主节点可以视为加入了最高优先级的通信域，作为该通信域的从节点)，而其他通信域的主节点向具有最高优先级的通信域的主节点发送信息，该过程也可以视为上行传输过程(此时，其他通信域的主节点也可以视为加入了最高优先级的通信域，作为该通信域的从节点)。需要说明的是，上行通常是指终端(terminal，T)节点向管理(grant，G)节点发送数据或信息的方向，可用“T”表示。下行通常是指G节点向T节点发送信息的方向，可用“G”表示。也可以理解为，“G”表示下行传输，“T”表示上行传输，这只是一种示例。或者也可以改为，“U”表示上行传输，“D”表示下行传输。
为解决背景技术提到的技术问题，本申请提供一种通信方法。该方法中第二通信装置若未正确接收到第一通信装置发送的第一信息，可在统一的第一时频资源发送反馈信息，相比于现有技术中第二通信装置组中每个第二通信装置在不同的时频资源上单独发送反馈信息，可节省反馈资源，从而可实现在有限的反馈资源上尽可能的提高反馈效率。
基于上述内容，下面结合附图3至附图8，对本申请提出的通信方法进行具体阐述。
该方法可由第一通信装置和第二通信装置组中的第二通信装置执行，第一通信装置可以是图1所示的主节点，第二通信装置可以是上述图1所示的从节点，其中，两个从节点可组成第二通信装置组。或者，第一通信装置可以是图2a所示的网络设备，第二通信装置可以是上述图2a所示的两个终端设备，其中，两个终端设备可组成第二通信装置组。或者，第一通信装置可以是上述图2b中的AP，第二通信装置可以是上述图2b中的站点，其中，两个站点可组成第二通信装置组。或者，第一通信装置可以是图2c所示的第一通信域中的手机，第二通信装置可以是上述图2c所示的第一通信域中的耳机和穿戴式设备，其中，耳机和穿戴式设备可组成第二通信装置组；或者，第一通信装置可以是图2c所示的第二通信 域中的CDC，第二通信装置可以是上述图2c所示的第二通信域中的显示屏、麦克、音箱和手机，其中，显示屏、麦克、音箱和手机可组成第二通信装置组；或者，第一通信装置可以是图2c所示的第三通信域中的PEPS系统，第二通信装置可以是上述图2c所示的第三通信域中的手机钥匙和车钥匙，其中，手机钥匙和车钥匙可组成第二通信装置组。或者，第一通信装置可以是上述图2d用于调度资源的终端设备，第二通信装置可以是上述图2d中的用于听从调度资源的终端设备，其中，听从调度资源的终端设备可以是第二通信装置组。
在一种可能的实现方式中，第一通信装置可以以单播的方式向需要组成第二通信装置组的第二通信装置发送配置信令，该配置信令中包括但不限于第二通信装置组的标识、第二通信装置的标识、或者第一通信装置与第二通信装置组进行通信的资源的信息中的一项或多项。例如，第一通信装置与第二通信装置组进行通信的资源可以为第一通信装置向第二通信装置发送组播信息的组播资源等。
下面参考图3，为本申请提供的一种通信方法的方法流程示意图。该方法中第二通信装置组可包括至少两个第二通信装置。该方法可包括以下步骤：
步骤301，第一通信装置向第二通信装置组发送第一信息。
具体的，第一通信装置可以以组播的方式发送第一信息，即第一通信装置可向第二通信装置组发送第一信息，其中，第一信息可为组播信息。在一种可能的实现方式中，第一通信装置在发送第一信息之前，可向第二通信装置组中的各个第二通信装置发送配置信号，该配置信号中包括发送第一信息的组播资源。进一步，第一通信装置在该组播资源上发送第一信息。相应地，第二通信装置可以在该组播资源上检测第一信息。第一信息例如可以为组播业务数据，或者也可以为信令(如物理层信令或高层信令等)，或者也可以包括至少一个信号(如同步信号、参考信号、信道估计信号、信道探测信号、相位跟踪信号和/或定位信号等)。
在一种可能的实现方式中，第一通信装置可对原始信息进行调制与编码，得到第一信息。
步骤302，第二通信装置检测第一信息。
在一种可能的实现方式中，第二通信装置组中的至少两个第二通信装置在对应的组播资源内检测来自第一通信装置的第一信息。可以理解为，第二通信装置组中至少两个第二通信装置在对应的组播资源内尝试接收来自第一通信装置的第一信息。基于此，第二通信装置可能会接收到第一信息，也可能会接收不到第一信息。
步骤303，若未正确接收到第一信息，第二通信装置在第一时频资源内发送反馈信息。
此处，第一时频资源为用于第二通信装置组中任一个第二通信装置的反馈资源。也可以理解为，第二通信装置组中各个第二通信装置用于发送反馈信息的反馈资源均为第一时频资源。换言之，第二通信装置组中的每个第二通信装置向第一通信装置发送反馈信息时所占用的频域资源相同、且时域资源也相同。
结合上图1，第二通信装置组中的两个从节点向主节点发送反馈信息的反馈资源均为第一时频资源。结合上述图2a，第二通信装置组中的两个终端设备向网络设备发送反馈信息的反馈资源均为第一时频资源。结合上述图2b，第二通信装置组中的两个站点向AP发送反馈信息的反馈资源均为第一时频资源。结合上述图2c，在第一通信域内，第二通信装 置组中的耳机和穿戴式设备向手机发送反馈信息的反馈资源为第一时频资源；或者，在第二通信域内，第二通信装置组中的显示屏、麦克、音箱和手机向CDC发送反馈信息的反馈资源均为第一时频资源；或者，在第三通信域内，第二通信装置组中的手机钥匙和车钥匙向PEPS系统发送反馈信息的反馈资源均为第一时频资源。
在一种可能的实现方式中，第二通信装置可以基于下述图6所示的方法获取第一时频资源，或者第一时频资源也可以是协议预定义，或者第一时频资源也可以是第一通信装置与第二通信装置预先约定的，本申请对此不做限定。
此处，反馈信息可用于指示第二通信装置组中存在至少一个未正确接收到第一信息的第二通信装置。需要说明的是，未正确接收到第一信息包括但不限于对第一信息解调译码失败、或未接收第一通信装置发送的第一信息等。
示例性地，反馈信息例如可以是否定确认字符(negative acknowledgment，NACK)、或者是其它可以表示未正确接收到第一信息的信息。需要说明的是，反馈信息的具体形式可以是第一通信装置指定并通知给第二通信装置的，或者也可以是第一通信装置与第二通信装置预先约定的，或者也可以是协议预定义的，本申请对此不做限定。
在一种可能的实现方式中，第二通信装置向第一通信装置发送反馈信息时，可由信号承载该反馈信息，该承载反馈信息的信号可参见下述相关介绍，此处不再赘述。
在一种可能的实现方式中，第二通信装置组中未正确接收到第一信息的第二通信装置可在同一时频资源(即第一时频资源)向第一通信装置发送反馈信息；正确接收到第一信息的第二通信装置可以不发送任何信号。
在一种可能的实现方式中，用于反馈信息传输的符号速率(symbol rate)小于用于第一信息传输的符号速率。其中，符号速率也可称为传码率或者码元传输速率，符号速率的单位为符号/秒(symbol per second，sps)。也可以理解为，第二通信装置发送反馈信息的每个符号的持续时间大于第一通信装置发送第一信息的每个符号的持续时间。如此，可以延长第二通信装置发送反馈信息的时长，从而有助于降低由于信道多径和/或不同的第二通信装置发送反馈信息的不完全同步等引起的符号之间的干扰，进而有助于提高第一通信装置检测反馈信息的准确性。
步骤304，第一通信装置可在第一时频资源内检测来自第二通信装置组中至少一个第二通信装置的反馈信息。
也可以理解为，第一通信装置在第一时频资源内尝试接收来自第二通信装置组的反馈信息。基于此，第一通信装置可能会接收到反馈信息，也可能接收不到来自第二通信装置组的反馈信息。
在一种可能的实现方式中，第一通信装置可在第一时频资源上接收承载反馈信息的信号，在可能的场景中，承载反馈信息的信号为全部或者部分未正确接收到第一信息的第二通信装置发送的承载反馈信息的信号的叠加。在另外可能的场景中，承载反馈信息的信号也可以第二通信装置组中的某一个第二通信装置发送的反馈信息，其他反馈信息可能会被漏检或者由于其他原因未被接收。
通过上述步骤301至步骤304，第二通信装置组中的各第二通信装置使用相同的第一时频资源向第一通信装置发送反馈信息，有助于减小反馈信息占用的资源，特别是当第二通信装置组中的第二通信装置的数量较多时。进一步，第二通信装置组中未正确接收到第一信息的第二通信装置才发送反馈信息，从而有助于降低不同的第二通信装置的反馈信息 之间的干扰。
在上述步骤304中，若第一通信装置在第一时频资源内接收到来自第二通信装置组的反馈信息，则说明第二通信装置组中存在至少一个未正确接收到第一信息的第二通信装置。
在一种可能的实现方式中，第一通信装置可发送第二信息。其中，第二信息可以与第一信息相同，即第一通信装置可重发第一信息。或者，第二信息也可以是根据第一信息对应的原始信息生成的，例如，第二信息可以是变更对原始信息的调制与编码策略(modulation and coding scheme，MCS)后得到的信息。
进一步，可选地，若第一通信装置可以确定哪些第二通信装置未正确接收到第一信息，则可以以单播的方式向未正确接收到第一信息的第二通信装置发送第二信息；相应地，未正确接收到第一信息的第二通信装置可以检测来自第一通信装置的第二信息。或者第一通信装置也可以以组播的方式向第二通信装置组发送第二信息；相应地，第二通信装置组中至少两个第二通信装置在对应的组播资源内检测第二信息。需要说明的是，第一通信装置可以获得第二通信装置组中哪些第二通信装置未正确接收到第一信息的方式可参见下述情形2的介绍，此处不再赘述。
若第一通信装置不能确定出是哪些第二通信装置未正确接收到第一信息，则可以以组播的方式第二通信装置组发送第二信息。相应地，第二通信装置组中至少两个第二通信装置在对应的组播资源内检测第二信息。或者，也可以以单播的方式向第二通信装置组中的每个或者至少一个第二通信装置发送第二信息，以使得第二通信装置组中的各个第二通信装置能尽可能的正确接收到第二信息。
下面，对承载反馈信息的信号进行详细介绍。
在一种可能的实现方式中，承载反馈信息的信号可由一个或多个序列组成。其中，承载反馈信息的信号的一个或多个序列的部分序列或者全部序列可以是预先定义的(例如，协议规定的、法规规定的、或行业标准规定的等)或预先配置的(例如，可以由传输该序列之前传输的信令配置该序列，可以使用无线通信技术或者无线通信技术之外的其它技术为序列的发送节点和接收节点配置该序列，该其它技术例如有线通信技术，或者通过发送节点和接收节点预留的配置接口、配置跳线或配置软件等)，例如基于m序列和/或Gold序列得到的序列。或者，承载反馈信息的信号的一个或多个序列的部分序列或者全部序列也可以是按预先定义的规则得到的(例如，协议、法规或行业标准等规定该序列的生成规则，序列的发送节点和接收节点可根据该规则生成序列)，例如基于前导序列得到的序列(或称为前导码)。进一步，可选地，前导序列还可用于表示第二通信装置的码元所使用的频率、时序估计、配置自动增益控制、或者符号速率及同步等中的一项或多项。前导序列通常采用固定的“01”序列，例如“010101…”或“101010…”等。或者，承载反馈信息的信号的一个或多个序列的部分序列或者全部序列也可以是根据预先定义和/或预先配置的参数按预先定义的规则得到的，例如第二通信装置的第一标识的序列或链路的标识的序列，具体获得第二通信装置的第一标识的序列可参见下述情形四的介绍，具体获得链路的标识的序列可参见下述情形五的介绍。或者，承载反馈信息的信号的一个或多个序列的部分序列或者全部序列也可以是对上述至少一种方式获得的序列按照预定义的组合规则进行组合得到的。这里的组合规则可以是按照预定义的顺序排列、或者多个序列中的数按照预定义规则运算并重新排列等，例如，一个预定义的序列中的数依次乘以预定义的扩频/扩时序列，并按顺序排列得到承载反馈信息的信号。
需要说明的是，序列是由预先确定长度及排列顺序的数组成的。数的类型例如可以是“0”“1”比特、或实数、或复数或整数等。示例性地，序列可以是“0”“1”比特组成的“01”串，或者也可以是实数组成的实数串，或者也可以是复数组成的复数串等、或者也可以是整数组成的整数串。
应理解，接收节点和发送节点可以预先获得序列(或序列集合)，即可预先获得承载反馈信息的信号的序列的长度及数的排列顺序等。示例性地，在承载反馈信息的信号传输之前，第一通信装置和第二通信装置组中的第二通信装置已获得承载反馈信息的信号的一个或多个序列的确定方式，包括但不限于上述给出的确定方式。
在一种可能的实现方式中，承载反馈信息的信号的一个或多个序列可包括基于m序列、Gold序列、前导序列、第二通信装置的第一标识的序列和链路的标识的序列(m序列、Gold序列、前导序列、第二通信装置的第一标识的序列和链路的标识的序列这些序列可以称为基础序列或者原始序列)中的任一项序列或任多项组合得到的序列，或者，也可以是上述任一项序列或者任多项组合得到的序列本身。进一步，可选地，承载反馈信息的信号的一个或多个序列可以是对m序列、Gold序列、前导序列、第二通信装置的标识的序列或链路的标识的序列中的任一项进行相位调制后得到的；例如，可以是对m序列进行相位调制后得到的承载反馈信息的信号；再比如，可以是对Gold序列进行相位调制后得到承载反馈信息的信号等等。或者，也可以是对m序列、Gold序列、前导序列、第二通信装置的标识的序列和链路的标识的序列中的任一项编码后再进行相位调制得到的；例如，可以是对m序列编码后再进行相位调制后得到的承载反馈信息的信号；再比如，可以是对Gold序列编码后进行相位调制后得到承载反馈信息的信号等等。或者，也可以是对m序列、Gold序列、前导序列、第二通信装置的标识的序列和链路的标识的序列中的任多项分别进行相位调制，并对相位调制后的序列进行组合(如按预设的组合规则组合)得到的；例如，可以是对m序列和Gold序列分别进行相位调制后，再按预设的组合规则组合得到的承载反馈信息的信号；再比如，可以对m序列和前导序列分别进行相位调制后，再按预设的组合规则组合得到承载反馈信息的信号。或者，也可以是对m序列、Gold序列、前导序列、第二通信装置的标识的序列和链路的标识的序列中的任多项分别先编码再进行相位调制，并对编码及相位调制后的序列按预设的组合规则进行组合得到的；例如，可以是对m序列先编码再进行相位调制，对Gold序列先编码再进行相位调制，再按预设的组合规则将编码和相位调制后的m序列、以及编码和相位调制后的Gold序列组合得到的承载反馈信息的信号；本申请对此不做限定。
需要说明的是，上述示例中是以相位调制为例进行说明的，本申请对m序列、Gold序列、前导序列、第二通信装置的标识的序列和链路的标识的序列的调制的方式不做限定，例如，还可以是幅度调制、频率调制、或正交幅度调制等。
也可以理解为，组成承载反馈信息的信号的一个或多个序列可以基于不同的序列得到。下面分情形介绍。
情形一，基于m序列得到承载反馈信息的信号的一个或多个序列。
在一种可能的实现方式中，承载反馈信息的信号的一个或多个序列可以是对m序列进行调制得到的。也就是说，对m序列进行调制得到的序列即为承载反馈信息的信号。
在另一种可能的实现方式中，承载反馈信息的信号的一个或多个序列也可以是对m序列编码后进行调制得到的。也就是说，对m序列编码后再进行调制得到的序列即为承载反 馈信息的信号。
基于该情形一，第二通信装置若未正确接收到第一信息，向第一通信装置发送基于m序列得到的序列(即承载反馈信息的信号)。例如，第二通信装置可以预先生成m序列，若确定未正确接收到第一信息，对m序列进行调制，得到调制后的m序列，向第一通信装置发送调制后的m序列。再比如，第二通信装置可以预先存储或者预先获得调制后的m序列，若未正确接收到第一信息，可向第一通信装置发送调制后的m序列。应理解，此处给出的第二通信装置获得基于m序列得到的承载反馈信息的信号仅是示例，本申请对此不做限定。
相应地，第一通信装置若接收到来自第二通信装置组的承载反馈信息的信号，则可确定第二通信装置组中存在至少一个第二通信装置未正确接收到第一信息。
应理解，m序列具有容易产生、规律性强、有较好的自相关性和互相关特性，因此，m序列可以有效的对抗干扰和噪声，如此，可提高第一通信装置检测反馈信息的可靠性。
情形二，基于Gold序列得到承载反馈信息的信号的一个或多个序列。
此处，Gold序列是一种基于m序列的码序列，具有较好的自相关性和互相关性，产生的序列数多。
在一种可能的实现方式中，可以是对Gold序列进行调制或者对Gold序列编码后进行调制得到承载反馈信息的信号的一个或多个序列。也可以理解为，对Gold序列进行调制或者对Gold序列编码后进行调制得到的序列即为承载反馈信息的信号。
基于该情形二，第二通信装置若未正确接收到第一信息，向第一通信装置发送基于Gold序列得到的序列(即承载反馈信息的信号)。例如，第二通信装置可以预先生成Gold序列，若确定未正确接收到第一信息，对Gold序列进行调制，得到调制后的Gold序列，向第一通信装置发送调制后的Gold序列。再比如，第二通信装置可以预先存储或预先获得调制后的Gold序列，若未正确接收到第一信息，可向第一通信装置发送调制后的Gold序列。应理解，此处给出的第二通信装置获得基于Gold序列得到的承载反馈信息的信号仅是示例，本申请对此不做限定。
相应地，第一通信装置若检测到来自第二通信装置组的承载反馈信息的信号，则可确定第二通信装置组中存在至少一个第二通信装置未正确接收到第一信息。
情形三，基于前导序列得到承载反馈信息的信号的一个或多个序列。
在一种可能的实现方式中，承载反馈信息的信号的一个或多个序列可以是对前导序列进行调制得到的，或者也可以是对前导序列编码后进行调制得到的。也就是说，对前导序列进行调制或编码后进行调制得到的序列即为承载反馈信息的信号。
基于该情形三，第二通信装置若未正确接收到第一信息，向第一通信装置发送基于前导序列得到的序列(即承载反馈信息的信号)。例如，第二通信装置可以预先生成前导序列，若确定未正确接收到第一信息，对前导序列进行调制，得到调制后的前导序列，向第一通信装置发送调制后的前导序列。再比如，第二通信装置可以预先存储或预先获得调制后的前导序列，若未正确接收到第一信息，可向第一通信装置发送调制后的前导序列。应理解，此处给出的第二通信装置获得基于前导序列得到的承载反馈信息的信号仅是示例，本申请对此不做限定。
相应地，第一通信装置若检测到来自第二通信装置组的承载反馈信息的信号，则可确定第二通信装置组中存在至少一个第二通信装置未正确接收到第一信息。
情形四，基于第二通信装置的第一标识的序列得到的承载反馈信息的信号的一个或多个序列。
在一种可能的实现方式中，第二通信装置的第一标识的序列可以是对第二通信装置的第一标识按预先定义的规则处理得到的。其中，第二通信装置的第一标识为预先定义和/或预先配置的参数，例如可以是第二通信装置的媒体访问控制(medium access control，MAC)地址，或者也可以是被分配的第二通信装置组内的标识。预先定义的规则例如可以是用二进制表示。示例性地，对第二通信装置的第一标识用二进制表示可得到二进制的第二通信装置的第一标识的序列。应理解，第二通信装置的第一标识的序列即为设备的标识的序列。
进一步，可选地，承载反馈信息的信号的一个或多个序列可以是对第二通信装置的第一标识的序列进行调制得到的；或者也可以是对第二通信装置的第一标识的序列编码后进行调制得到的。
基于该情形四，第二通信装置若未正确接收到第一信息，向第一通信装置发送基于第二通信装置的第一标识的序列得到的序列(即承载反馈信息的信号)。需要说明的是，第二通信装置的第一标识的序列可以是预先生成并存储的，或者也可以是第二通信装置确定未正确接收都第一信息后生成的。
相应地，第一通信装置若检测到来自第二通信装置组的承载反馈信息的信号，则可确定第二通信装置组中存在至少一个第二通信装置未正确接收到第一信息。
情形五，基于链路的标识的序列得到的承载反馈信息的信号的一个或多个序列。
在一种可能的实现方式中，链路的标识的序列可以是对链路的标识按预先定义的规则处理得到的。此处，链路的标识可为预先定义和/或预先配置的参数，例如可以是按照预先定义的规则(例如可以是一定长度的序列中“0”和“1”的分布规律等)产生的长度为32比特(bits)的序列或者也可以是其它长度的序列，其中，链路可以理解为是第一通信装置与第二通信装置进行信息(或数据)交互的逻辑通道，链路的标识可以理解为是逻辑通道的标识，链路的标识例如接入地址(access address，AA)。预先定义的规则例如可以是链路的标识的二进制表示。示例性地，对链路的标识进行二进制表示可得到二进制的链路的标识的序列。
进一步，可选地，承载反馈信息的信号的一个或多个序列可以是对链路的标识的序列进行调制得到的；或者也可以是对链路的标识的序列编码后进行调制得到的。
基于该情形五，第二通信装置若未正确接收到第一信息，向第一通信装置发送基于链路的标识的序列得到的序列(即承载反馈信息的信号)。需要说明的是，链路的标识的序列可以是预先生成并存储的，或者也可以是第二通信装置确定未正确接收都第一信息后生成的。
相应地，第一通信装置若检测到来自第二通信装置组的承载反馈信息信号，则可确定第二通信装置组中存在至少一个第二通信装置未正确接收到第一信息。
情形六，基于前导序列和m序列得到的承载反馈信息的信号的一个或多个序列。
此处，前导序列位于承载反馈信息的信号的一个或多个序列的起始位置，可参见图4。
在一种可能的实现方式中，承载反馈信息的信号的一个或多个序列可以是对前导序列和m序列分别进行调制后，再按预设的组合规则组合得到的。
在另一种可能的实现方式中，承载反馈信息的信号的一个或多个序列也可以是对前导 序列和m序列分别编码后再分别进行调制后，再按预设的组合规则组合得到的。也就是说，对前导序列编码和调制，得到调制后的前导序列，对m序列编码和调制，得到调制后的m序列，再按预设的组合规则对调制后的前导序列和m序列组合，得到承载反馈信息的信号。
基于该情形六，第二通信装置若未正确接收到第一信息，向第一通信装置发送基于前导序列和m序列得到的序列(即承载反馈信息的信号)。相应地，第一通信装置若检测到来自第二通信装置组的承载反馈信息的信号，则可确定第二通信装置组中存在至少一个第二通信装置未正确接收到第一信息。
关于前导序列更进一步的功能可参见前述情形三的介绍，此处不再赘述。
需要说明的是，上述情形四中第二通信装置的第一标识可以是第二通信装置通知给第一通信装置的，或者也可以是第一通信装置与第二通信装置建立连接时协商的。上述情形五中的链路的标识也可以是第二通信装置通知给第一通信装置的，或者也可以是第一通信装置与第二通信装置建立连接时协商的。
需要说明的是，上述给出的六种情形仅是示例，本申请中承载反馈信息的信号的一个或多个序列还可以是基于m序列、Gold序列、前导序列、第二通信装置的第一标识的序列和链路的标识的序列中其它组合。例如，承载反馈信息的信号还可以基于m序列和Gold序列得到，或者基于前导序列和Gold序列的得到，或者基于前导序列和第二通信装置的第一标识的序列的得到，或者基于前导序列和链路的标识的序列的得到等，此处不再一一列举。
需要说明的是，第二通信装置组中不同的第二通信装置对应的承载反馈信息的一个或多个序列中可能至少一个序列不同，或者也可能全部序列都相同。下面分情形介绍。
情形1，第二通信装置组中不同的第二通信装置的承载反馈信息的信号的一个或多个序列相同。
也可以理解为，若承载反馈信息的信号的序列为一个序列，则第二通信装置组中不同的第二通信装置的承载反馈信息的信号的这一个序列是相同的；若承载反馈信息的信号的序列为多个序列，则第二通信装置组中不同的第二通信装置的承载反馈信息的信号的这多个序列均是相同的。
对于上述情形一，第二通信装置组中不同的第二通信装置对应的m序列相同；或者，第二通信装置组中不同的第二通信装置对应的m序列的移位相同。应理解，m序列的移位例如可以是将m序列的中的部分数移到前面，例如，可将m序列中的后3位移到m序列的最前面等。
进一步，可选地，基于相同的m序列得到的承载反馈信息的信号的一个或多个序列相同。或者，基于相同的m序列的移位得到的承载反馈信息的信号的一个或多个序列相同。
需要说明的是，第二通信装置组中不同的第二通信装置基于m序列得到承载反馈信息的信号的一个或多个序列相同的方式不限于基于相同的m序列或相同的m序列的移位，如上仅是示例。
对于上述情形二，第二通信装置组中不同的第二通信装置对应的Gold序列相同。
进一步，可选地，基于相同的Gold序列得到的承载反馈信息的信号的一个或多个序列相同。
需要说明的是，第二通信装置组中不同的第二通信装置基于Gold序列得到承载反馈信息的信号的一个或多个序列相同的方式不限于基于相同的Gold序列，如上仅是示例。
对于上述情形三，第二通信装置组中不同的第二通信装置对应的前导序列相同。
进一步，可选地，基于相同的前导序列得到的承载反馈信息的信号的一个或多个序列相同。
需要说明的是，第二通信装置组中不同的第二通信装置基于前导序列得到承载反馈信息的信号的一个或多个序列相同的方式不限于基于相同的前导序列，如上仅是示例。
对于上述情形四，第二通信装置组中不同的第二通信装置对应的第二通信装置的第一标识的序列相同。
基于此，在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的第一标识的序列相同。
进一步，可选地，基于相同的第一标识的序列得到的承载反馈信息的信号的一个或多个序列相同。
需要说明的是，第二通信装置组中不同的第二通信装置基于第一标识的序列得到承载反馈信息的信号的一个或多个序列相同的方式不限于基于相同的第一标识的序列，如上仅是示例。
对于上述情形五，第二通信装置组中不同的第二通信装置对应的链路的标识的序列相同。
基于此，在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的链路的标识相同。
进一步，可选地，基于相同的链路的标识的序列得到的承载反馈信息的信号的一个或多个序列相同。
需要说明的是，基于链路的标识的序列得到承载反馈信息的信号的一个或多个序列相同的方式不限于基于相同的链路的标识的序列，如上仅是示例。
对于上述情形六，第二通信装置组中不同的第二通信装置对应的m序列相同且对应的前导序列也相同；或者，第二通信装置组中不同的第二通信装置对应的m序列的移位相同且对应的前导序列也相同。
进一步，可选地，基于相同的m序列和相同的前导序列得到的承载反馈信息的信号的一个或多个序列相同。或者，基于相同的m序列的移位和相同的前导序列得到的承载反馈信息的信号的一个或多个序列相同。
需要说明的是，基于前导序列和m序列得到承载反馈信息的信号的一个或多个序列相同的方式不限于基于相同的m序列和相同的前导序列，或，基于相同的m序列的移位和相同的前导序列，如上仅是示例。
基于该情形1，第一通信装置可以以组播的方式向第二通信装置组发送第一指示信息，第一指示信息用于指示第二通信装置对应的承载反馈信息的信号的一个或多个序列中的至少一个序列；或者，第一通信装置也可以以单播的方式向第二通信装置组中的各个第二通信装置发送第一指示信息。相应地，第二通信装置组中的第二通信装置可根据接收到的第一指示信息确定承载反馈信息的信号的一个或多个序列中的至少一个序列。
结合上述给出的情形，基于上述情形一，第一指示信息可用于指示第二通信装置对应的基于m序列或者m序列的移位得到的序列；基于上述情形二，第一指示信息可用于指示第二通信装置对应的基于Gold序列得到的序列；基于上述情形四，第一指示信息可用于指示基于第二通信装置的第一标识的序列得到的序列；基于上述情形五，第一指示信息 可用于指示基于链路的标识的序列得到的序列；基于上述情形六，第一指示信息可以指示承载反馈信息的信号的一个或多个序列中的至少一个序列；例如，第一指示信息可以用于指示第二通信装置对应的基于m序列得到的序列。基于此，在可能的实现中，所述第一指示信息可以包含用于得到承载反馈信息的信号的一个或多个序列中的至少一个序列的基础序列或者原始序列的信息；也可以理解为，第一指示信息可以间接指示了所述至少一个序列。或者，所述第一指示信息可以包含所述承载反馈信息的信号的一个或多个序列中至少一个序列的信息；也可以理解为，第一指示信息可以直接指示所述至少一个序列。
在一种可能的实现方式中，承载反馈信息的信号的一个或多个序列也包括m序列、Gold序列、前导序列、第二通信装置的第一标识的序列和链路的标识的序列中的任一项序列或任多项组合的序列。例如，承载反馈信息的信号的一个或多个序列包括m序列，第一指示信息可用于指示第二通信装置对应的m序列或者m序列的移位。再比如，承载反馈信息的信号的一个或多个序列包括Gold序列，第一指示信息可用于指示第二通信装置对应的Gold序列。再比如，承载反馈信息的信号的一个或多个序列包括第二通信装置的第一标识的序列，第一指示信息可用于指示第二通信装置的第一标识的序列。再比如，承载反馈信息的信号的一个或多个序列包括链路的标识的序列，第一指示信息可用于指示链路的标识的序列。再比如，承载反馈信息的信号的一个或多个序列包括m序列和前导序列，第一指示信息可用于指示m序列。此处不再一一列举。基于此，在可能的实现中，所述第一指示信息可以包含用于得到承载反馈信息的信号的一个或多个序列中的至少一个序列信息；也可以理解为，第一指示信息可以间接指示了所述至少一个序列。或者，所述第一指示信息可以包含所述承载反馈信息的信号的一个或多个序列中至少一个序列的信息；也可以理解为，第一指示信息可以直接指示所述至少一个序列。
需要说明的是，未收到第一指示信息的第二通信装置可按协议预定义的或者预先约定的方式获得承载反馈信息的信号。
还需要说明的是，该第一指示信息可以是第一通信装置与第二通信装置建立连接之前发送的，或者也可以是第一通信装置与第二通信装置建立连接的过程中发送的，或者也可以是在第一通信装置与第二通信装置建立连接之后、且在第二通信装置发送反馈信息之前发送的，本申请对此不做限定。
情形2，第二通信装置组中不同的第二通信装置对应的承载反馈信息的信号的一个或多个序列中至少一个序列不同。
如下，示例性地的示出了两种可能的实现方式。
实现方式一，承载反馈信息的信号的一个或多个序列包括基于m序列、Gold序列、前导序列、第二通信装置的第一标识的序列、或链路的标识的序列中的一个或多个得到的序列。
结合上述给出的情形，分别介绍不同的第二通信装置对应的承载反馈信息的信号的一个或多个序列中至少一个序列不同。
对于上述情形一，第二通信装置组中不同的第二通信装置对应的m序列不同；或者，第二通信装置组中不同的第二通信装置对应的m序列的移位不同。应理解，相同长度的m序列，因为数(如“01”)的排列顺序不同，可以有多个不同的m序列。
进一步，可选地，基于不同的m序列得到的承载反馈信息的信号的一个或多个序列不同。基于不同的m序列的移位得到的承载反馈信息的信号的一个或多个序列不同。
需要说明的是，第二通信装置组中不同的第二通信装置基于m序列得到承载反馈信息的信号的一个或多个序列不同的方式不限于基于不同的m序列或不同的m序列的移位，如上仅是示例，例如还可以基于相同的m序列采用不同的调制方式，或基于相同的m序列的移位采用不同的调制方式等。
在一种可能的实现方式中，第一通信装置可以以单播的方式向第二通信装置组中的第二通信装置发送第一指示信息，该第一指示信息可用于指示第二通信装置对应的基于m序列或m序列的移位得到的序列。相应地，接收到第一指示信息的第二通信装置可根据该第一指示信息获得承载反馈信息的信号的一个或多个序列中的至少一个序列。
基于此，第一通信装置可以准确的识别出第二通信装置组中哪个第二通信装置未正确接收到第一信息。而且，由于第二通信装置组内的第二通信装置对应的m序列不同，基于不同的m序列得到的承载反馈信息的一个或多个序列也不同，当同时多个第二通信装置均在第一时频资源发送反馈信息时，有助于降低由于多径和/或不同的第二通信装置发送承载反馈信息的信号不完全同步等引起的符号之间干扰。
在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的m序列的移位不同时，承载反馈信息的信号基于的m序列的移位可包括至少两个连续的移位相同的m序列。例如，移位的m序列为1100101，两个连续的移位相同的m序列为11001011100101。
通过两个连续的移位相同的m序列，第一通信装置可用一个m序列延迟相关，即可检测到反馈信息的存在，实现简单。
对于上述情形二，第二通信装置组中不同的第二通信装置对应的Gold序列不同。
进一步，可选地，基于不同的Gold序列得到的承载反馈信息的信号的一个或多个序列不同。
需要说明的是，第二通信装置组中不同的第二通信装置基于Gold序列得到承载反馈信息的信号的一个或多个序列不同的方式不限于基于不同的Gold序列，如上仅是示例，例如还可以对相同的Gold序列采用不同的调制方式等。
在一种可能的实现方式中，第一通信装置可以以单播的方式向第二通信装置组中的第二通信装置发送第一指示信息，该第一指示信息可用于指示第二通信装置对应的基于Gold序列得到的序列。
对于上述情形三，第二通信装置组中不同的第二通信装置对应的前导序列不同。
进一步，可选地，基于不同的前导序列得到的承载反馈信息的信号的一个或多个序列不同。
需要说明的是，第二通信装置组中不同的第二通信装置基于前导序列得到承载反馈信息的信号的一个或多个序列不同的方式不限于基于不同的前导序列，如上仅是示例，例如还可以基于相同的前导序列采用不同的调制方式等。
对于上述情形四，第二通信装置组中不同的第二通信装置对应的第二通信装置的第一标识的序列不同。
进一步，可选地，基于不同的第二通信装置的第一标识的序列得到的承载反馈信息的信号的一个或多个序列不同。
需要说明的是，第二通信装置组中不同的第二通信装置基于第一标识的序列得到承载反馈信息的信号的一个或多个序列不同的方式不限于基于不同的第一标识的序列，如上仅是示例，例如还可以基于相同的第一标识的序列采用不同的调制方式等。
在一种可能的实现方式中，第一通信装置可以以单播的方式向第二通信装置组中的第二通信装置发送第一指示信息，该第一指示信息可用于指示第二通信装置对应的基于第一标识的序列得到的序列。
对于上述情形五，第二通信装置组中不同的第二通信装置对应的链路的标识的序列不同。
进一步，可选地，基于不同的链路的标识的序列得到的承载反馈信息的信号的一个或多个序列不同。
需要说明的是，基于链路的标识的序列得到承载反馈信息的信号的一个或多个序列不同的方式不限于基于不同的链路的标识的序列，如上仅是示例，例如还可以基于相同的链路的标识的序列采用不同的调制方式等。
在一种可能的实现方式中，第一通信装置可以以单播的方式向第二通信装置组中的第二通信装置发送第一指示信息，该第一指示信息可用于指示第二通信装置对应的基于链路的标识的序列得到的序列。
对于上述情形六，第二通信装置组中不同的第二通信装置对应的前导序列和m序列中至少一个序列不同。
在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的基于前导序列和m序列得到的序列不同。
进一步，可选地，基于不同的m序列和/或不同的前导序列得到的承载反馈信息的信号的一个或多个序列不同。或者，基于不同的m序列的移位和/或不同的前导序列得到的承载反馈信息的信号的一个或多个序列不同。
需要说明的是，基于前导序列和m序列得到承载反馈信息的信号的一个或多个序列不同的方式不限于基于不同的m序列和/或不同的前导序列，或基于不同的m序列的移位和/或不同的前导序列，如上仅是示例，例如，可以基于相同的前导序列和相同的m序列采用不同的调制方式等，或者基于相同的前导序列和相同的m序列的移位采用不同的调制方式。
进一步，可选地，第一通信装置可以以单播的方式向第二通信装置组中的第二通信装置发送第一指示信息，该第一指示信息可用于指示第二通信装置对应的基于前导序列和m序列得到的序列；或者，第一指示信息也可以仅指示第二通信装置对应的基于m序列得到的序列。
实现方式二，承载反馈信息的信号包括N个子序列，N为大于1的整数。这里的N个子序列是承载反馈信息的信号的所有序列包含的子序列的集合。
也可以理解为，一个第二通信装置对应N个子序列，第二通信装置组中不同的第二通信装置对应的这N个子序列中至少一个子序列是不同的。
如图5所示，为本申请提供的一种第二通信装置获得N个子序列的方法流程示意图。该方法包括以下步骤：
步骤501，第二通信装置获取第二通信装置的第二标识。
此处，第二通信装置的第二标识可以包括第二通信装置的MAC地址，或者也可以包括第二通信装置在第二通信装置组内的被分配的组内标识。需要说明的是，第二通信装置的第二标识可以与第二通信装置的第一标识相同，例如均为第二通信装置的MAC地址，或者均为第二通信装置在第二通信装置组内被分配的组内标识。或者，第二通信装置的第二标识与第一标识不相同，例如，第二通信装置的第二标识为第二通信装置的MAC地址， 第二通信装置的第一标识为在第二通信装置组内的被分配的组内标识；再比如，第二通信装置的第二标识为在第二通信装置组内的被分配的组内标识，第二通信装置的第一标识为第二通信装置的MAC地址，本申请对此不做限定。
在一种可能的实现方式中，第二通信装置的第二标识可以用比特序列表示，同一第二通信装置组内表示不同的第二通信装置的第二标识的比特序列的长度相同。一种情况下，第二通信装置的第二标识可以是第二通信装置在第二通信装置组特有的。例如，当一个第二通信装置属于多个通信装置组时，在不同的通信装置组可以使用不同的第二标识。另一种情况下，第二通信装置在不同的通信装置组也可以使用相同的第二标识，本申请对此不做限定。
为了实现第二通信装置组中不同的第二通信装置对应的承载反馈信息的信号的一个或多个序列中至少一个序列不同，第二通信装置组内不同的第二通信装置的第二标识不同。
如下示例性地示出了一种第二通信装置获取第二通信装置的第二标识的方式。
在一种可能的实现方式中，第一通信装置可发送第二配置信息，其中，第二配置信息可包括第二通信装置组中的至少一个第二通信装置的第二标识的信息，第二通信装置的第二标识的信息可以是第一通信装置与第二通信装置预先约定的、或者也可以是协议规定。
示例性地，第一通信装置可以单播的方式向第二通信装置发送第二配置信息。相应地，第二通信装置可接收来自第一通信装置的第二配置信息，并根据第二配置信息可获得第二标识。需要说明的是，对于第一通信装置未给配置第二标识的第二通信装置，可随机生成第二标识。
或者，第一通信装置可以组播的方式向第二通信装置组发送第二配置信息。相应地，第二通信装置组可在对应的组播资源上接收来自第一通信装置的第二配置信息，第二通信装置组中的各个第二通信装置可根据第二配置信息获得各自第二标识。
需要说明的是，第一通信装置为第二通信装置组中不同的第二通信装置配置的第二标识是不同的。如此，可以使得在下述步骤502，不同的第二通信装置对应不同的复数序列，从而有助于避免特定叠加方式下反向相消导致第一通信装置无法检测到反馈信息。
还需要说明的是，第二通信装置也可以随机生成第二通信装置的第二标识。不同的第二通信装置随机生成的第二标识可能相同，也可能不相同。当不同的第二通信装置随机生成的第二标识不同时，上述步骤501也可以基于该方式获得第二通信装置的第二标识。
步骤502，第二通信装置可根据第二通信装置的第二标识，获得复数序列。
此处，第二通信装置可采用预设调制方式调制第二标识，获得复数序列。其中，预设调制方式可以是协议预定义的，或者也可以是预配置的，或者也可以是第一通信装置为第二通信装置组配置的相移键控(phase-shift keying，PSK)类调制方式，PSK类调制方式包括但不限于二进制相移键控(binary phase shift keying，BPSK)、正交相移键控(quadrature phase shift keying，QPSK)、或8相移键控(8phase-shift keying，PSK)等。
在一种可能的实现方式中，获得的复数序列可表示为b 0,b 1,…,b N-1，复数序列的长度为N。需要说明的是，第二通信装置组内不同的第二通信装置获得的复数序列的长度是相同的。
如下，示例性地的给出了两种获取复数序列的长度N的方式。
方式一，第一通信装置发送第三配置信息。
此处，第三配置信息用于指示N。
在一种可能的实现方式中，第一通信装置可以单播的方式向第二通信装置组中的至少一个第二通信装置发送第三配置信息。相应地，第二通信装置可接收来自第一通信装置的第三配置信息。进一步，第二通信装置可根据接收到的第三配置信息确定N。
在另一种可能的实现方式中，第一通信装置可以组播的方式向第二通信装置组发送第二配置信息。相应地，第二通信装置组中的各个第二通信装置可在对应的组播资源上接收来自第一通信装置的第三配置信息。进一步，第二通信装置可根据接收到的第三配置信息确定N。
方式二，第一通信装置可发送第四配置信息。
此处，第四配置信息可用于指示第二通信装置组支持的最大用户数的信息。进一步，第二通信装置可根据接收到的第四配置信息确定N。具体地，第二通信装置确定出的N的大小应满足当第二通信装置组中包括最大数量的第二通信装置时，可以实现不同的第二通信装置对应不同的第二标识。例如，第二通信装置支持的最大用户数为8，则N可确定为3。
在一种可能的实现方式中，第一通信装置可以单播的方式向第二通信装置组中的至少一个第二通信装置发送第四配置信息；或者，也可以组播的方式向第二通信装置组发送第四配置信息。
步骤503，第二通信装置获取公共复数序列集合。
此处，公共复数序列集合包括至少N个公共复数序列(以包括Q个公共复数序列为例，Q为大于或等于N的整数)，这Q个公共复数序列可以是相同的Q个公共复数序列；或者也可以是互不相同的Q个公共复数序列；或者也可以是Q个公共复数序列中部分公共复数序列是相同的，另外部分公共复数序列是不同的。需要说明的是，相同的公共复数序列是指公共复数序列的长度相同、包括的数相同且数的排列顺序相同。需要说明的是，公共复数序列集合为一个有序的集合。
示例性地，为了便于方案的说明，Q等于N为例介绍，公共复数序列集合包括的N个公共复数序列分别为A 0(＝a 0 0,a 1 0,…,a L0-1 0)，A 1(＝a 0 1,a 1 1,…,a L1-1 1)，…A N-1(＝a 0 N-1,a 1 N-1,…,A L(N-1) -1 N-1)，也就是说，公共复数序列集合可表示为{A 0(＝a 0 0,a 1 0,…,a L0-1 0),A 1(＝a 0 1,a 1 1,…,a L1-1 1),…,A N-1(＝a 0 N-1,a 1 N-1,…,A L(N-1)-1 N-1)}。其中，A 0至A N-1的这N个公共复数序列可以是相同的N个公共复数序列。也可以理解为，公共复数序列集合包括一个公共复数序列；换言之，公共复数序列集合包括的N个公共复数序列可以是同一个公共复数序列。或者这N个公共复数序列也可以是互不相同的N个公共复数序列。或者这N个公共复数序列中部分公共复数序列是相同的，另外部分的公共复数序列是不相同的；例如，这N个公共复数序列中A 0(＝a 0 0,a 1 0,…,a L0-1 0)与A 1(＝a 0 1,a 1 1,…,a L1-1 1)是相同的，其它公共复数序列是不同的；再比如，这N个公共复数序列中A 2(＝a 0 2,a 1 2,…,a L0-1 2)与A 4(＝a 0 4,a 1 4,…,a L1-1 4)是相同的，其它公共复数序列是不同的。
如下公共复数序列集合中的任一个公共复数序列(即第i个公共复数序列)为例介绍。
第i个公共复数序列A i可由经过相位调制的第一比特序列组成，其中，第一比特序列可包括m序列、Gold序列、或者第二通信装置组的标识的序列中的至少一项。或者，第i个公共复数序列可依次由前导序列和经过相位调制的第一比特序列组成。也可以理解为，第i个公共复数序列中前导序列位于起始位置，经过相位调制的第一比特序列位于前导序列之后。相位调制可参见前述相关介绍，此处不再重复赘述。也可以理解为，i可取遍闭 区间[1，N]中的整数，即可获得公共复数序列集合。
在一种可能的实现方式中，公共复数序列集合可以是协议预定义的、或者也可以是预配置的、或者也可以是第一通信装置为第二通信装置组配置的已知集合。也可以理解为，公共复数序列集合中的每个公共复数序列可以是协议预定义的、或者也可以是预配置的、或者也可以是第一通信装置为第二通信装置组配置的已知序列。
需要说明的是，第二通信装置组中不同的第二通信装置对应的公共复数序列集合相同。换言之，第二通信装置组对应一个公共复数序列集合。另外，不同的通信装置组的公共复数序列集合可以相同也可以不同，本申请对此不做限定。
步骤504，第二通信装置可根据复数序列和公共复数序列集合，获得N个子序列。
此处，以N个子序列中任一个子序列(即第i个子序列)为例，第i个子序列满足A i×b i，其中，A i为公共复数序列集合中的第i个公共复数序列，b i为根据第二通信装置的第二标识得到的长度为N的复数序列中的第i个复数。例如，i＝0，A i为A 0(＝a 0 0,a 1 0,…,a L0-1 0)，b i为b 0，A 0×b 0表示a 0 0,a 1 0,…,a L0-1 0依次与b 0相乘，获得第i个子序列。需要说明的是，i取遍闭区间[1，N]中的整数，可获得N个子序列，分别为b 0×A 0、b 1×A 1、…、b N-1×A N-1。需要说明的是，第二通信装置可从公共复数序列集合包括的Q个公共复数序列中按预先定义的方式选择其中N个。
在一种可能的实现方式中，第二通信装置组中不同的第二通信装置对应的第i个子序列的长度相同、且在一个或多个序列中的起始位置相同。例如，第二通信装置组中不同的第二通信装置对应的第1个子序列b 0*A 0的长度相同、且第1个子序列b 0*A 0位于承载反馈信息的信号的一个或多个序列的起始位置相同。
通过上述步骤501至步骤504，通过第二通信装置组中不同的第二通信装置对应的第i个子序列的长度相同、且在一个或多个序列中的起始位置相同，可以实现不同的第二通信装置发送的承载反馈信息的信号中的第i个子序列满足的A i×b i是对齐的。当第二通信装置组中不同第二通信装置的第二标识不同，基于第二通信装置的第二标识生成的复数序列互不相同，因此，不同的第二通信装置的N个子序列也是不同的。从而有助于避免特定叠加方式下反向相消导致第一通信装置无法检测到反馈信息。
需要说明的是，上述给出的两种实现方式仅为示例。应理解，第二通信装置组可能有部分第二通信装置对应的承载反馈信息的一个或多个序列全部相同，另外部分对应的承载反馈信息的一个或多个序列中至少一个序列不同。结合上述图2c，例如，第二通信域中的显示屏和麦克对应的承载反馈信息的一个或多个序列全部相同，音箱和手机对应的承载反馈信息的一个或多个序列中至少一个序列不同。
下面，示例性地示出了一种第二通信装置组获取第一时频资源的方法。
请参阅图6，为本申请提供的一种第二通信装置获取第一时频资源的方法流程示意图。该方法包括以下步骤：
步骤601，第二通信装置向第一通信装置发送能力信息。相应地，第一通信装置接收来自所述第二通信装置的能力信息。
此处，可以是第二通信装置组中的至少一个第二通信装置向第一通信装置发送能力信息。在一种可能的实现方式中，第二通信装置的能力信息也可以是协议预定义的。若第二通信装置组中存在未向第一通信装置发送能力信息的第二通信装置，则第一通信装置可基于协议，确定未发送能力信息的第二通信装置的能力信息。其中，第二通信装置的能力信 息包括但不限于第二通信装置的处理速率、帧间间隔(interframe space，IFS)、收发转换时间间隔等，其中，IFS是指第二通信装置组内各个第二通信装置接收到第一信息后，等待IFS的间隔再发送反馈信息的时长。
该步骤601为可选步骤。
步骤602，第一通信装置可根据第二通信装置的能力信息，获得第一时频资源。
此处，第一时频资源为用于所述第二通信装置组中任一个第二通信装置的反馈资源。
在一种可能的实现方式中，可通过第一配置信息为第二通信装置组中的任一个第二通信装置配置第一时频资源。也可以理解为，第一配置信息用于为第二通信装置组中的各个第二通信装置配置第一时频资源。
在一种可能的实现方式中，第一配置信息可直接指示第一时频资源；或者也可以指示第一时频资源的相关信息，例如，可用于指示第一时频资源中的时域资源、或者用于指示偏移、或者用于指示周期等。
示例性地，第一通信装置可根据接收到的第二通信装置组中处理速率最慢、帧间间隔最大、以及收发转换时间间隔最大的第二通信装置的能力信息，确定第一时频资源。如此，可以使得第二通信装置组中的各个第二通信装置发送反馈信息的时间尽可能对齐；而且，有助于减小第二通信装置组中各个第二通信装置发送反馈信息的碰撞几率。
步骤603，第一通信装置发送第一配置信息。相应地，第二通信装置可接收来自第一通信装置的第一配置信息。
此处，第一通信装置可向第二通信装置组发送第一配置信息。即第一通信装置可以以组播的方式向第二通信装置组发送第一配置信息。或者，第一通信装置也可以以单播的方式向第二通信装置组中的至少一个第二通信装置发送第一配置信息。
若第一配置信息用于指示第一时频资源的相关信息，第二通信装置可结合指示第一时频资源的相关信息和协议规定，确定第一时频资源。
通过上述步骤601至步骤603，第一通信装置可为第二通信装置组中的第二通信装置配置第一时频资源，从而第二通信装置可获得发送反馈信息的第一时频资源。
需要说明的是，第二通信装置组中也可以是部分第二通信装置使用相同的第一时频资源。例如，第二通信装置组包括五个第二通信装置，其中三个第二通信装置使用第一时频资源发送反馈信息，剩余的两个可以使用其它的时频资源发送反馈信息。即，所述第一时频资源为用于所述第二通信装置组中部分第二通信装置的反馈资源。
可以理解的是，为了实现上述实施例中功能，第一通信装置和第二通信装置包括了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本申请中所公开的实施例描述的各示例的模块及方法步骤，本申请能够以硬件或硬件和计算机软件相结合的方式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用场景和设计约束条件。
基于上述内容和相同构思，图7和图8为本申请的提供的可能的通信装置的结构示意图。这些通信装置可以用于实现上述方法实施例中第一通信装置或第二通信装置的功能，因此也能实现上述方法实施例所具备的有益效果。在本申请中，该通信装置可以是如图1所示的主节点，也可以是如图1所示的从节点，还可以是应用于主节点或从节点的模块(如芯片)。该通信装置可以是上述图2a中的终端设备，也可以是上述图2a中的网络设备，还可以是应用于终端设备或网络设备的模块(如芯片)。该通信装置可以是上述图2b中的AP， 也可以是上述图2b中的站点，还可以是应用于AP或站点的模块(如芯片)。该通信装置可以是上述图2c中的显示屏、麦克、音箱或手机，也可以是上述图2c中的CDC；或者，该通信装置可以是上述图2c中的耳机或穿戴式设备，也可以是上述图2c中的手机；或者，该通信装置可以是上述图2c中的手机钥匙和车钥匙，也可以是上述图2c中的PEPS系统。
如图7所示，该通信装置700包括处理模块701和收发模块702。通信装置700用于实现上述图3、图5或图6中所示的方法实施例中第一通信装置或第二通信装置的功能。
当通信装置700用于实现图3所示的方法实施例的第一通信装置的功能时：收发模块702用于向第二通信装置组发送第一信息，第二通信装置组包括至少两个第二通信装置；处理模块701用于在第一时频资源内检测来自第二通信装置组中至少一个第二通信装置的反馈信息，第一时频资源为用于第二通信装置组中任一个第二通信装置的反馈资源；其中，反馈信息用于指示第二通信装置组中存在至少一个未正确接收到第一信息的第二通信装置。
当通信装置700用于实现图3所示的方法实施例的第二通信装置的功能时：处理模块701用于检测第一信息；若未正确接收到第一信息，收发模块702用于在第一时频资源内发送反馈信息，第一时频资源为用于第二通信装置组中任一个第二通信装置的反馈资源，第二通信装置组包括至少两个第二通信装置；其中，反馈信息用于指示第二通信装置组中存在至少一个未正确接收到第一信息的第二通信装置。
有关上述处理模块701和收发模块702更详细的描述可以参考图3所示的方法实施例中相关描述直接得到，此处不再一一赘述。
应理解，本申请实施例中的处理模块701可以由处理器或处理器相关电路组件实现，收发模块702可以由收发器或收发器相关电路组件实现。
基于上述内容和相同构思，如图8所示，本申请还提供一种通信装置800。该通信装置800可包括处理器801和收发器802。处理器801和收发器802之间相互耦合。可以理解的是，收发器802可以为通信接口、接口电路或输入输出接口。可选地，通信装置800还可包括存储器803，用于存储处理器801执行的指令或存储处理器801运行指令所需要的输入数据或存储处理器801运行指令后产生的数据。
当通信装置800用于实现图3所示的方法时，处理器801用于执行上述处理模块701的功能，收发器802用于执行上述收发模块702的功能。
当上述通信装置为应用于第一通信装置的芯片时，该第一通信装置芯片实现上述方法实施例中第一通信装置的功能。该第一通信装置芯片从第一通信装置中的其它模块(如射频模块或天线)接收信息，该信息是第二通信装置发送给第一通信装置的；或者，该第一通信装置芯片向第一通信装置中的其它模块(如射频模块或天线)发送信息，该信息是第一通信装置发送给第二通信装置的。
当上述通信装置为应用于第二通信装置的芯片时，该第二通信装置芯片实现上述方法实施例中第二通信装置的功能。该第二通信装置芯片从第二通信装置中的其它模块(如射频模块或天线)接收信息，该信息是第一通信装置发送给第二通信装置的；或者，该第二通信装置芯片向第二通信装置中的其它模块(如射频模块或天线)发送信息，该信息是第二通信装置发送给第一通信装置的。
基于上述内容和相同构思，本申请提供一种通信系统。该通信系统可包括前述一个或多个第一通信装置、以及、一个或多个第二通信装置。第一通信装置可执行第一通信装置 侧任意方法，第二通信装置可执行第二通信装置侧任意方法。第二通信装置和第一通信装置可能的实现方式可参见前述相关介绍，此处不再赘述。
基于上述内容和相同构思，本申请提供一种终端设备。该终端设备可以是前述第一通信装置，或者也可以是前述第二通信装置。第一通信装置可执行第一通信装置侧任意方法，第二通信装置可执行第二通信装置侧任意方法。第二通信装置和第一通信装置可能的实现方式可参见前述相关介绍，此处不再赘述。
在一种可能的实现方式中，终端设备例如可以是智能终端、智能手机、智能家居设备、智能制造设备、机器人、无人机或智能运输设备(如自动导引运输车(automated guided vehicle，AGV)或者无人运输车等)等。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其它通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其它可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请的实施例中的方法步骤可以通过硬件的方式来实现，也可以由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(random access memory，RAM)、闪存、只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于第一通信装置或第二通信装置中。当然，处理器和存储介质也可以作为分立组件存在于第一通信装置或第二通信装置中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的方式实现。计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行计算机程序或指令时，全部或部分地执行本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其它可编程装置。计算机程序或指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，计算机程序或指令可以从一个网站站点、计算机、服务器或数据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器、数据中心等数据存储设备。可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，数字视频光盘(digital video disc，DVD)；还可以是半导体介质，例如，固态硬盘(solid state drive，SSD)。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“以下至少一 项(个)”或其类似表达，是指这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b或c中的至少一项(个)，可以表示：a，b，c，“a和b”，“a和c”，“b和c”，或“a和b和c”，其中a，b，c可以是单个，也可以是多个。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。在本申请的文字描述中，字符“/”，一般表示前后关联对象是一种“或”的关系；在本申请的公式中，字符“/”，表示前后关联对象是一种“相除”的关系。另外，在本申请中，“示例的”一词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。或者可理解为，使用示例的一词旨在以具体方式呈现概念，并不对本申请构成限定。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定。术语“第一”、“第二”等类似表述，是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或模块。方法、系统、产品或设备不必限于清楚地列出的那些步骤或模块，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或模块。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的保护范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (45)

  1. 一种通信方法，其特征在于，包括：
    向第二通信装置组发送第一信息，所述第二通信装置组包括至少两个第二通信装置；
    在第一时频资源内检测来自所述第二通信装置组中至少一个第二通信装置的反馈信息，所述第一时频资源为用于所述第二通信装置组中任一个第二通信装置的反馈资源；
    其中，所述反馈信息用于指示所述第二通信装置组中存在至少一个未正确接收到所述第一信息的第二通信装置。
  2. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    发送第一配置信息，所述第一配置信息用于指示所述第一时频资源。
  3. 如权利要求1或2所述的方法，其特征在于，所述方法还包括：
    接收来自所述第二通信装置组中的至少一个第二通信装置的能力信息。
  4. 如权利要求1至3任一项所述的方法，其特征在于，若在所述第一时频资源内检测到来自至少一个第二通信装置的反馈信息，所述方法还包括：
    发送第二信息，所述第二信息与所述第一信息相同、或所述第二信息是根据所述第一信息对应的原始信息生成的。
  5. 如权利要求1至4任一项所述的方法，其特征在于，用于所述反馈信息传输的符号速率小于用于所述第一信息传输的符号速率。
  6. 如权利要求1至5任一项所述的方法，其特征在于，承载所述反馈信息的信号由一个或多个序列组成；
    其中，所述一个或多个序列中的至少一个序列为预先定义或预先配置的，或按预先定义的规则得到的，或根据预先定义和/或预先配置的参数按预先定义的规则得到的。
  7. 如权利要求6所述的方法，其特征在于，所述一个或多个序列包括基于以下任一项或任多项的组合得到的序列：
    m序列、Gold序列、前导序列、第二通信装置的第一标识的序列、或链路的标识的序列。
  8. 如权利要求6或7所述的方法，其特征在于，所述一个或多个序列包括前导序列，所述前导序列位于所述一个或多个序列的起始位置。
  9. 如权利要求6至8任一项所述的方法，其特征在于，所述第二通信装置组中不同的第二通信装置对应的所述一个或多个序列中至少一个序列不同。
  10. 如权利要求6至9任一项所述的方法，其特征在于，所述一个或多个序列包括基于m序列得到的序列；
    所述第二通信装置组中不同的第二通信装置对应的m序列不同；或者，
    所述第二通信装置组中不同的第二通信装置对应的m序列的移位不同。
  11. 如权利要求6至9任一项所述的方法，其特征在于，所述一个或多个序列包括N个子序列，所述N为大于1的整数；
    所述第二通信装置组中不同的第二通信装置对应的第i个子序列的长度相同、且在所述一个或多个序列中的起始位置相同，所述第i个子序列为所述N个子序列中的任一个；
    其中，所述第i个子序列满足A i×b i，所述b i为根据第二通信装置的第二标识得到的长度为N的复数序列中的第i个复数，所述A i为公共复数序列集合中的第i个公共复数序列， 所述第二通信装置组中不同的第二通信装置对应的公共复数序列集合相同。
  12. 如权利要求11所述的方法，其特征在于，所述公共复数序列集合为预定义或预配置的。
  13. 如权利要求11或12所述的方法，其特征在于，所述第i个公共复数序列由经过相位调制的第一比特序列组成，或者由所述前导序列和所述经过相位调制的第一比特序列组成；其中，所述第一比特序列包括m序列、Gold序列或第二通信装置组的标识的序列中的至少一项。
  14. 如权利要求11至13任一项所述的方法，其特征在于，所述方法还包括：
    发送第二配置信息，所述第二配置信息包括所述第二通信装置组中的至少一个第二通信装置的第二标识的信息；
    和/或；
    发送第三配置信息，所述第三配置信息用于指示所述N的取值。
  15. 如权利要求6至8任一项所述的方法，其特征在于，所述第二通信装置组中不同的第二通信装置对应的所述一个或多个序列相同。
  16. 如权利要求15所述的方法，其特征在于，所述一个或多个序列包括基于m序列得到的序列；
    所述第二通信装置组中不同的第二通信装置对应的m序列相同；或者，
    所述第二通信装置组中不同的第二通信装置对应的m序列的移位相同。
  17. 如权利要求6至16任一项所述的方法，其特征在于，所述方法还包括：
    发送第一指示信息，所述第一指示信息用于指示所述第二通信装置对应的所述一个或多个序列中的至少一个序列。
  18. 如权利要求17所述的方法，其特征在于，所述至少一个序列包括基于所述m序列得到的序列；
    所述第一指示信息还用于指示所述第二通信装置对应的基于所述m序列或者基于所述m序列的移位得到的序列。
  19. 一种通信方法，其特征在于，包括：
    检测第一信息；
    若未正确接收到所述第一信息，在第一时频资源内向第一通信装置发送反馈信息，所述第一时频资源为用于第二通信装置组中任一个第二通信装置的反馈资源，所述第二通信装置组包括至少两个第二通信装置；
    其中，所述反馈信息用于指示属于所述第二通信装置组的第二通信装置未正确接收到所述第一信息。
  20. 如权利要求19所述的方法，其特征在于，所述方法包括：
    接收来自所述第一通信装置的第一配置信息，所述第一配置信息用于指示所述第一时频资源。
  21. 如权利要求19或20所述的方法，其特征在于，所述方法还包括：
    向所述第一通信装置发送所述第二通信装置的能力信息。
  22. 如权利要求19至21任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述第一通信装置的第二信息，所述第二信息与所述第一信息相同、或所述第二信息与所述第一信息对应相同的原始信息。
  23. 如权利要求19至22任一项所述的方法，其特征在于，用于所述反馈信息传输的符号速率小于用于所述第一信息传输的符号速率。
  24. 如权利要求19至23任一项所述的方法，其特征在于，承载所述反馈信息的信号由一个或多个序列组成；
    其中，所述一个或多个序列中的至少一个序列为预先定义或预先配置的，或按预先定义的规则得到的，或根据预先定义和/或预先配置的参数按预先定义的规则得到的。
  25. 如权利要求24所述的方法，其特征在于，所述一个或多个序列包括基于以下任一项或任多项的组合得到的序列：
    m序列、Gold序列、前导序列、第二通信装置的第一标识的序列、或链路的标识的序列。
  26. 如权利要求24或25所述的方法，其特征在于，所述一个或多个序列包括前导序列，所述前导序列位于所述一个或多个序列的起始位置。
  27. 如权利要求24至26任一项所述的方法，其特征在于，所述第二通信装置组中不同的第二通信装置对应的所述一个或多个序列中至少一个序列不同。
  28. 如权利要求24至27任一项所述的方法，其特征在于，所述一个或多个序列包括基于m序列得到的序列；
    所述第二通信装置组中不同的第二通信装置对应的m序列不同；或者，
    所述第二通信装置组中不同的第二通信装置对应的m序列的移位不同。
  29. 如权利要求24至27任一项所述的方法，其特征在于，所述一个或多个序列包括N个子序列，所述N为大于1的整数；
    所述第二通信装置组中不同的第二通信装置对应的第i个子序列的长度相同、且在所述一个或多个序列中的起始位置相同，所述第i个子序列为所述N个子序列中的任一个；
    其中，所述第i个子序列满足Si×bi，所述b i为根据第二通信装置的第二标识得到的长度为N的复数序列中的第i个复数，所述Si为公共复数序列集合中的第i个公共复数序列，所述第二通信装置组中不同的第二通信装置对应的公共复数序列集合相同。
  30. 如权利要求29所述的方法，其特征在于，所述公共复数序列集合为预定义或配置的公共复数序列。
  31. 如权利要求29或30所述的方法，其特征在于，所述第i个公共复数序列由经过相位调制的第一比特序列组成，或者由所述前导序列和所述经过相位调制的第一比特序列组成；其中，所述第一比特序列包括m序列、Gold序列或第二通信装置组的标识的序列中的至少一项。
  32. 如权利要求29至31任一项所述的方法，其特征在于，所述方法还包括：
    接收来自第一通信装置第二配置信息，所述第二配置信息包括所述第二通信装置的第二标识的信息；或者，
    随机生成所述第二通信装置的第二标识。
  33. 如权利要求29至32任一项所述的方法，其特征在于，所述方法还包括：
    接收来自第一通信装置第三配置信息，所述第三配置信息用于指示所述N的取值。
  34. 如权利要求24至26任一项所述的方法，其特征在于，所述第二通信装置组中不同的第二通信装置对应的所述一个或多个序列相同。
  35. 如权利要求34所述的方法，其特征在于，所述一个或多个序列包括基于m序列得 到的序列；
    所述第二通信装置组中不同的第二通信装置对应的m序列相同；或者，
    所述第二通信装置组中不同的第二通信装置对应的m序列的移位相同。
  36. 如权利要求24至35任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述第一通信装置的第一指示信息，所述第一指示信息用于指示所述第二通信装置对应的所述一个或多个序列中的至少一个序列。
  37. 如权利要求36所述的方法，其特征在于，所述至少一个序列包括基于所述m序列得到的序列；
    所述第一指示信息还用于指示所述第二通信装置对应的基于所述m序列得到的序列或者基于所述m序列的移位得到的序列。
  38. 一种信息处理装置，其特征在于，包括：
    收发模块，用于向第二通信装置组发送第一信息，所述第二通信装置组包括至少两个第二通信装置；
    处理模块，用于在第一时频资源内检测来自所述第二通信装置组中至少一个第二通信装置的反馈信息，所述第一时频资源为用于所述第二通信装置组中任一个第二通信装置的反馈资源；
    其中，所述反馈信息用于指示所述第二通信装置组中存在至少一个未正确接收到所述第一信息的第二通信装置。
  39. 如权利要求38所述的装置，其特征在于，所述收发模块还用于：
    发送第一配置信息，所述第一配置信息用于指示所述第一时频资源。
  40. 一种信息处理装置，包括处理模块和收发模块，其特征在于：
    所述处理模块，用于检测第一信息；
    若未正确接收到所述第一信息，所述收发模块，用于在第一时频资源内向第一通信装置发送反馈信息，所述第一时频资源为用于第二通信装置组中任一个第二通信装置的反馈资源，所述第二通信装置组包括至少两个第二通信装置；
    其中，所述反馈信息用于指示属于所述第二通信装置组的第二通信装置未正确接收到所述第一信息。
  41. 如权利要求40所述的装置，其特征在于，所述收发模块还用于：
    接收来自所述第一通信装置的第一配置信息，所述第一配置信息用于指示所述第一时频资源。
  42. 一种芯片，其特征在于，包括至少一个处理器和接口电路，所述芯片用于执行如权利要求1至18、或19至37中的任一项所述方法。
  43. 一种终端设备，其特征在于，包括用于执行如权利要求1至18、或19至37中的任一项所述方法的信息处理装置。
  44. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序或指令，当所述计算机程序或指令被通信装置执行时，实现如权利要求1至18、或19至37中任一项所述的方法。
  45. 一种通信系统，其特征在于，包括用于执行权利要求1-18任一项所述的方法的通信装置，以及用于执行权利要求19-37任一项所述的方法的通信装置。
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