WO2021087774A1 - Procédé de communication et dispositif associé - Google Patents

Procédé de communication et dispositif associé Download PDF

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Publication number
WO2021087774A1
WO2021087774A1 PCT/CN2019/115811 CN2019115811W WO2021087774A1 WO 2021087774 A1 WO2021087774 A1 WO 2021087774A1 CN 2019115811 W CN2019115811 W CN 2019115811W WO 2021087774 A1 WO2021087774 A1 WO 2021087774A1
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Prior art keywords
sequences
division multiplexing
code division
sequence
time slot
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PCT/CN2019/115811
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English (en)
Chinese (zh)
Inventor
郭文婷
向铮铮
苏宏家
卢磊
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201980101295.2A priority Critical patent/CN114556828B/zh
Priority to PCT/CN2019/115811 priority patent/WO2021087774A1/fr
Publication of WO2021087774A1 publication Critical patent/WO2021087774A1/fr

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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

Definitions

  • the present invention relates to the field of communication technology, and in particular to a communication method and related devices.
  • D2D device-to-device
  • V2X communication refers to the communication between the vehicle and the outside world, including vehicle-to-vehicle communication (V2V), vehicle-to-pedestrian communication (V2P), and vehicle-to-infrastructure communication ( vehicle to infrastructure, V2I), vehicle to network communication (V2N).
  • V2X communication is aimed at high-speed equipment communication technology represented by vehicles. It is the basic technology and key technology applied in scenarios with very high communication delay requirements in the future, such as smart cars, autonomous driving, intelligent transportation systems and other scenarios.
  • LTE V2X solves some of the basic requirements in V2X scenarios, but for future application scenarios such as fully intelligent driving and autonomous driving, LTE V2X at this stage cannot effectively support it.
  • 5G new radio (NR) technology in the 3GPP standard organization, 5G NR V2X will also be further developed, for example, it can support lower transmission delay, more reliable communication transmission, and higher throughput. Better user experience to meet the needs of a wider range of application scenarios.
  • NR new radio
  • LTE V2X defines broadcast transmission on the side link, and NR V2X introduces unicast and multicast transmission on the side link.
  • HARQ physical layer hybrid automatic repeat request
  • the 3GPP standard defines the physical layer sidelink feedback channel (PSFCH) on the side link, which is used to send sidelink feedback control information (SFCI), which can at least be used to receive user equipment (user equipment). equipment, UE) to send a feedback confirmation message to the sending UE whether the reception is successful, and may also include channel status information (channel status information, CSI), etc.
  • the time domain resources of the PSFCH may be configured or pre-configured by the network for the resource pool, and the frequency domain resources and/or code domain resources of the PSFCH are also configured. However, there is no standard for how to configure these resources in the prior art.
  • the prior art supports UE feedback on downlink data transmission, and the base station fully controls the allocation of time-frequency resources. Therefore, a UE sends a decoding result of one or more downlink data on the time-frequency resource configured by the base station.
  • a central controller such as base station control scheduling
  • when multiple users in multiple time slots need to feed back HARQ information on the same time-frequency resource how to allocate time-frequency resources to users is People in the field need to study and solve problems.
  • the present invention provides a communication method and related devices.
  • unicast, multicast, and broadcast coexist in the same resource pool, no additional signaling overhead is required, and each time slot is assigned a corresponding response sequence and response sequence in advance.
  • Time-frequency resources are used to respond to the received data, thereby reducing network overhead.
  • an embodiment of the present invention provides a communication method.
  • the method includes: a first terminal device receives first data from a second terminal device in a first time slot; and the first time slot has N time slots. For one time slot in the slot, the N is an integer greater than or equal to 1;
  • the first terminal device sends a first response sequence to the second terminal device on a first time-frequency resource according to the first data, and the first response sequence is allocated to all of the M code division multiplexing sequences.
  • One of the sequences of the first time slot, the M code division multiplexing sequences are used to respond to the data sent on the N time slots on the first time-frequency resource, and the M is the N Integer multiples of.
  • This scheme uses code division multiplexing sequence, so that each time slot can be allocated to the corresponding response sequence.
  • unicast, multicast, and broadcast coexist in the same resource pool, no additional signaling overhead is needed.
  • Each time slot is allocated in advance with a corresponding response sequence and time-frequency resource for responding to the received data, so that it can Reduce network overhead.
  • the signal bandwidth of each of the M code division multiplexing sequences is the same as the bandwidth of the first time-frequency resource, and the bandwidth of the first time-frequency resource is the same as the bandwidth of the first time-frequency resource.
  • the bandwidth of the sub-channel where the time-frequency resource is located is the same.
  • the signal bandwidth of the code division multiplexing sequence is designed to be the same as the bandwidth for transmitting the sequence, so that the time-frequency resource can be fully utilized.
  • M code division multiplexing sequences that can be multiplexed in a time-frequency resource are evenly allocated to N time slots configured by the system, and then two sequences are assigned to each device to respond to the received The situation of correct and wrong decoding after data.
  • the M code division multiplexing sequences are obtained by a base sequence ⁇ by cyclic shifting in the time domain, or the M code division multiplexing sequences are obtained by a base sequence ⁇ through Obtained by phase rotation in the frequency domain; the M code division multiplexing sequences are expressed as:
  • the N represents the index number of the M code division multiplexing sequences
  • the M/N code division multiplexing sequences allocated to each of the N time slots are M/N sequences with consecutive index labels.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • This embodiment provides an expression formula representing the sequence allocated by each of the above N time slots. Analysis from the formula also shows that the index labels of the multiple code division multiplexing sequences of each time slot are continuous.
  • the P ACK sequences allocated by the i-th time slot among the N time slots are P consecutive sequences with index labels, and the i-th time slot among the N time slots
  • the allocated P NACK sequences are P sequences with consecutive index labels.
  • the index labels of the P ACK sequences and P NACK sequences in each time slot are designed to be continuous, so as to reduce the mutual interference between the ACK and NACK sequences in the same time slot.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the multiplexing sequence is P ACK sequences with consecutive index labels
  • the expression formulas for the consecutive sequences of ACK and NACK in each time slot are given, and the pairing mode of ACK and NACK sequence pairs is designed.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the interference during the feedback sequence between the multicast time slot and the unicast time slot is reduced.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the embodiment of the present application further changes the relative order of the ACK sequence and the NACK sequence in the same time slot to reduce the interference caused by the feedback sequence between the multicast time slot and the unicast time slot. At the same time, the mutual interference between the ACK sequence and the NACK sequence in the same time slot is reduced.
  • the first data is received by the first terminal device on a plurality of subchannels, and the first terminal device sends the data to the first time-frequency resource according to the first data.
  • the second terminal device sends the first response sequence, including:
  • the first terminal device selects one sub-channel from the plurality of sub-channels according to the first data. Sending the first response sequence to the second terminal device on the first time-frequency resource;
  • the first terminal device occupies the plurality of sub-channels in the first data according to the first data. Sending the first response sequence to the second terminal device on a time-frequency resource.
  • the first data is received by the first terminal device on a plurality of sub-channels, and when the first data is multicast data, the receiving device to which the multicast belongs The sequence in which each device responds to the first data occupies the multiple sub-channels for transmission;
  • each of all receiving devices of the multicast occupies one of the multiple subchannels to send in response to the sequence of the first data.
  • the response sequence mapping methods are designed for unicast and multicast respectively.
  • a multicast time slot only one subchannel is occupied to send the response sequence to achieve multicast expansion.
  • an embodiment of the present invention provides a communication method.
  • the method includes: a second terminal device sends first data to a first terminal device in a first time slot; the first time slot is N time slots In one of the time slots, the N is an integer greater than or equal to 1;
  • the second terminal device receives a first response sequence sent by the first terminal device based on the first data on a first time-frequency resource, where the first response sequence is allocated among M code division multiplexing sequences For one of the sequences of the first time slot, the M code division multiplexing sequences are used to respond to the data sent on the N time slots on the first time-frequency resource, and the M is all The integer multiple of N.
  • the signal bandwidth of each of the M code division multiplexing sequences is the same as the bandwidth of the first time-frequency resource, and the bandwidth of the first time-frequency resource is the same as the bandwidth of the first time-frequency resource.
  • the bandwidth of the sub-channel where the time-frequency resource is located is the same.
  • the M code division multiplexing sequences are obtained by a base sequence ⁇ by cyclic shifting in the time domain, or the M code division multiplexing sequences are obtained by a base sequence ⁇ through Obtained by phase rotation in the frequency domain; the M code division multiplexing sequences are expressed as:
  • the N represents the index number of the M code division multiplexing sequences
  • the M/N code division multiplexing sequences allocated to each of the N time slots are M/N sequences with consecutive index labels.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the P ACK sequences allocated by the i-th time slot among the N time slots are P consecutive sequences with index labels, and the i-th time slot among the N time slots
  • the allocated P NACK sequences are P sequences with consecutive index labels.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the multiplexing sequence is P ACK sequences with consecutive index labels
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the second terminal device sending the first data to the first terminal device in the first time slot includes: the second terminal device occupies a plurality of sub-channels in the first time slot to transmit the first data to the first terminal device.
  • the first terminal device transmits the first data.
  • an embodiment of the present invention provides a terminal device.
  • the terminal device may also be a communication device.
  • the terminal device includes: a receiving unit configured to receive first data from a second terminal device in a first time slot ;
  • the first time slot is one of N time slots, and the N is an integer greater than or equal to 1;
  • the sending unit is configured to send a first response sequence to the second terminal device on a first time-frequency resource according to the first data, where the first response sequence is allocated to the M code division multiplexing sequence One of the sequences of the first time slot, the M code division multiplexing sequences are used to respond to the data sent on the N time slots on the first time-frequency resource, and the M is the time of the N Integer multiples.
  • the signal bandwidth of each of the M code division multiplexing sequences is the same as the bandwidth of the first time-frequency resource, and the bandwidth of the first time-frequency resource is the same as the bandwidth of the first time-frequency resource.
  • the bandwidth of the sub-channel where the time-frequency resource is located is the same.
  • the M code division multiplexing sequences are obtained by a base sequence ⁇ by cyclic shifting in the time domain, or the M code division multiplexing sequences are obtained by a base sequence ⁇ through Obtained by phase rotation in the frequency domain; the M code division multiplexing sequences are expressed as:
  • the N represents the index number of the M code division multiplexing sequences
  • the M/N code division multiplexing sequences allocated to each of the N time slots are M/N sequences with consecutive index labels.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the P ACK sequences allocated by the i-th time slot among the N time slots are P consecutive sequences with index labels, and the i-th time slot among the N time slots
  • the allocated P NACK sequences are P sequences with consecutive index labels.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the multiplexing sequence is P ACK sequences with consecutive index labels
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the first data is received by the terminal device on multiple sub-channels, and the sending unit is specifically configured to:
  • the communication between the second terminal device and the terminal device is unicast communication, select one sub-channel from the plurality of sub-channels based on the first data to be on the first time-frequency resource Sending the first response sequence to the second terminal device;
  • the communication between the second terminal device and the terminal device is unicast communication, occupying the multiple subchannels according to the first data to the first time-frequency resource
  • the second terminal device transmits the first response sequence.
  • the first data is received by the terminal device on a plurality of sub-channels.
  • the multicast data in the receiving device to which the multicast belongs The sequence in which each device responds to the first data occupies the multiple sub-channels for transmission;
  • each of all receiving devices of the multicast occupies one of the multiple subchannels to send in response to the sequence of the first data.
  • an embodiment of the present application provides a terminal device.
  • the terminal device may also be a communication device.
  • the terminal device includes: a sending unit configured to send first data to the first terminal device in a first time slot;
  • the first time slot is one time slot of N time slots, and the N is an integer greater than or equal to 1;
  • the receiving unit is configured to receive a first response sequence sent by the first terminal device according to the first data on the first time-frequency resource, where the first response sequence is allocated to M code division multiplexing sequences One of the sequences of the first time slot, the M code division multiplexing sequences are used to respond to the data sent on the N time slots on the first time-frequency resource, and the M is the An integer multiple of N.
  • the signal bandwidth of each of the M code division multiplexing sequences is the same as the bandwidth of the first time-frequency resource, and the bandwidth of the first time-frequency resource is the same as the bandwidth of the first time-frequency resource.
  • the bandwidth of the sub-channel where the time-frequency resource is located is the same.
  • the M code division multiplexing sequences are obtained by a base sequence ⁇ by cyclic shifting in the time domain, or the M code division multiplexing sequences are obtained by a base sequence ⁇ through Obtained by phase rotation in the frequency domain; the M code division multiplexing sequences are expressed as:
  • the N represents the index number of the M code division multiplexing sequences
  • the M/N code division multiplexing sequences allocated to each of the N time slots are M/N sequences with consecutive index labels.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the P ACK sequences allocated by the i-th time slot among the N time slots are P consecutive sequences with index labels, and the i-th time slot among the N time slots
  • the allocated P NACK sequences are P sequences with consecutive index labels.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the multiplexing sequence is P ACK sequences with consecutive index labels
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the sending unit is specifically configured to: occupy multiple subchannels in the first time slot to send the first data to the first terminal device.
  • an embodiment of the present invention provides a terminal device.
  • the terminal device may also be a communication device.
  • the terminal device includes a processor, a transmitter, a receiver, and a memory.
  • the memory is used to store computer programs and / Or data, the processor is configured to execute a computer program stored in the memory, so that the terminal device performs the following operations:
  • the first time slot is one time slot of N time slots, and the N is an integer greater than or equal to 1;
  • a first response sequence is sent to the second terminal device through the transmitter on a first time-frequency resource, where the first response sequence is allocated to the second terminal device among M code division multiplexing sequences.
  • the M code division multiplexing sequences are used to respond to the data sent on the N time slots on the first time-frequency resource, and the M is the time of the N Integer multiples.
  • the signal bandwidth of each of the M code division multiplexing sequences is the same as the bandwidth of the first time-frequency resource, and the bandwidth of the first time-frequency resource is the same as the bandwidth of the first time-frequency resource.
  • the bandwidth of the sub-channel where the time-frequency resource is located is the same.
  • the M code division multiplexing sequences are obtained by a base sequence ⁇ by cyclic shifting in the time domain, or the M code division multiplexing sequences are obtained by a base sequence ⁇ through Obtained by phase rotation in the frequency domain; the M code division multiplexing sequences are expressed as:
  • the N represents the index number of the M code division multiplexing sequences
  • the M/N code division multiplexing sequences allocated to each of the N time slots are M/N sequences with consecutive index labels.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the P ACK sequences allocated by the i-th time slot among the N time slots are P consecutive sequences with index labels, and the i-th time slot among the N time slots
  • the allocated P NACK sequences are P sequences with consecutive index labels.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the multiplexing sequence is P ACK sequences with consecutive index labels
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the sending a first response sequence to the second terminal device through the transmitter on the first time-frequency resource according to the first data includes
  • the communication between the second terminal device and the terminal device is unicast communication
  • the transmitter transmits the first response sequence to the second terminal device.
  • the first data is received by the terminal device on a plurality of sub-channels.
  • the multicast data in the receiving device to which the multicast belongs The sequence in which each device responds to the first data occupies the multiple sub-channels for transmission;
  • each of all receiving devices of the multicast occupies one of the multiple subchannels to send in response to the sequence of the first data.
  • an embodiment of the present invention provides a terminal device.
  • the terminal device may also be a communication device.
  • the terminal device includes a processor, a transmitter, a receiver, and a memory.
  • the memory is used to store computer programs and / Or data, the processor is configured to execute a computer program stored in the memory, so that the terminal device performs the following operations:
  • the first time slot is one time slot in N time slots, and the N is an integer greater than or equal to 1;
  • the first response sequence sent by the first terminal device on the first time-frequency resource according to the first data is received by the receiver, where the first response sequence is allocated to M code division multiplexing sequences One of the sequences of the first time slot, the M code division multiplexing sequences are used to respond to the data sent on the N time slots on the first time-frequency resource, and the M is the An integer multiple of N.
  • the signal bandwidth of each of the M code division multiplexing sequences is the same as the bandwidth of the first time-frequency resource, and the bandwidth of the first time-frequency resource is the same as the bandwidth of the first time-frequency resource.
  • the bandwidth of the sub-channel where the time-frequency resource is located is the same.
  • the M code division multiplexing sequences are obtained by a base sequence ⁇ by cyclic shifting in the time domain, or the M code division multiplexing sequences are obtained by a base sequence ⁇ through Obtained by phase rotation in the frequency domain; the M code division multiplexing sequences are expressed as:
  • the N represents the index number of the M code division multiplexing sequences
  • the M/N code division multiplexing sequences allocated to each of the N time slots are M/N sequences with consecutive index labels.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the P ACK sequences allocated by the i-th time slot among the N time slots are P consecutive sequences with index labels, and the i-th time slot among the N time slots
  • the allocated P NACK sequences are P sequences with consecutive index labels.
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the multiplexing sequence is P ACK sequences with consecutive index labels
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the M/N code division multiplexing sequences obtained by the allocation of the i-th time slot among the N time slots are expressed as:
  • the sending the first data to the first terminal device in the first time slot by the transmitter includes: occupying a plurality of sub-channels in the first time slot by the transmitter to send the first data to the first terminal device.
  • the first terminal device transmits the first data.
  • an embodiment of the present invention provides a communication system, which includes a first terminal device and a second terminal device, wherein the first terminal device is the terminal device according to any one of the above third aspects, The second terminal device is the terminal device according to any one of the foregoing fourth aspects.
  • an embodiment of the present invention provides a communication system including a first terminal device and a second terminal device, wherein the first terminal device is the terminal device according to any one of the fifth aspects, The second terminal device is the terminal device according to any one of the above-mentioned sixth aspects.
  • an embodiment of the present invention provides a computer-readable storage medium or a non-volatile storage medium, the computer-readable storage medium or the non-volatile storage medium stores a computer program, and the computer program is Execute to realize the communication method according to any one of the above-mentioned first aspect.
  • an embodiment of the present invention provides a computer-readable storage medium or a non-volatile storage medium, the computer-readable storage medium or the non-volatile storage medium stores a computer program, and the computer program is Execute to realize the communication method according to any one of the above-mentioned second aspect.
  • an embodiment of the present invention provides a computer program product.
  • the computer program product is read and executed by a computer, the communication method according to any one of the foregoing first aspect or any one of the foregoing second aspect Will be executed.
  • an embodiment of the present invention provides a computer program that, when the computer program is executed on a computer, will enable the computer to implement any one of the above-mentioned first aspect or any one of the above-mentioned second aspect Communication method.
  • an embodiment of the present invention provides a communication chip including a processor and a communication interface, and the communication chip is configured to execute any one of the foregoing first aspect or any one of the foregoing second aspect. method.
  • a method in which N time slots share a time-frequency resource to send a response sequence to received data is designed.
  • This solution achieves the purpose of code division multiplexing by using phase rotation in the frequency domain or cyclic shift in the time domain. So that each time slot can be allocated to the corresponding response sequence.
  • unicast, multicast, and broadcast coexist in the same resource pool, no additional signaling overhead is needed, and corresponding time-frequency resources are allocated for each time slot in advance.
  • the NACK and ACK sequences in the response sequence corresponding to a feedback time slot are designed to be continuous respectively to reduce the interference between the NACK and ACK sequences.
  • FIG. 1 is a schematic diagram of the system architecture used by the communication method provided by the embodiment of the solution;
  • FIG. 2 is a schematic diagram of the interaction flow of the communication method provided by the embodiment of the solution.
  • FIG. 3 is a schematic diagram of the system frame structure in the communication method provided by the embodiment of the solution.
  • FIG. 5 is a schematic diagram of the phase distribution of the sequence in the communication method provided by the embodiment of the solution.
  • FIG. 6 is a schematic diagram of the phase distribution of another sequence in the communication method provided by the embodiment of the solution.
  • FIG. 7 is a schematic diagram of the phase distribution of another sequence in the communication method provided by the embodiment of the solution.
  • FIG. 8 is a schematic diagram of a logical structure of a terminal device provided by an embodiment of the application.
  • FIG. 9 is a schematic diagram of the hardware structure of a terminal device provided by an embodiment of the application.
  • FIG. 10 is a schematic diagram of the logical structure of another terminal device provided by an embodiment of the application.
  • FIG. 11 is a schematic diagram of the hardware structure of another terminal device provided by an embodiment of the application.
  • FIG. 12 is a schematic structural diagram of a communication chip provided by an embodiment of this application.
  • the system architecture shown in FIG. 1 includes multiple vehicle devices, and the multiple vehicle devices can communicate with each other in a unicast, multicast, or broadcast manner.
  • device 1 sends data to device 2, device 3, and device 4 respectively.
  • device 2, device 3, and device 4 After receiving the data, device 2, device 3, and device 4 will decode the data, and if the decoding is correct, send the decode to device 1.
  • the correct response information is an acknowledge character (acknowledge character, ACK), and if it is decoded incorrectly, the response message of the decoded error, that is, a negative acknowledge character (NACK), is sent to the device 1.
  • acknowledge character acknowledge character
  • NACK negative acknowledge character
  • the embodiments of the present invention can not only be applied to V2V scenarios of vehicle-to-vehicle communication, but also applicable to scenarios such as vehicle-to-pedestrian communications V2P, vehicle-to-infrastructure communications V2I, and other vehicle networking scenarios.
  • the embodiments of the present invention can also be applied to scenarios of the Internet of Things such as the communication V2N between the car and the network and the interconnection of home appliances.
  • the communication device in the embodiment of the present invention may include a vehicle-mounted communication module or other embedded communication modules, or a handheld communication device, including mobile phones, tablet computers, etc., and may also include roadside units (RSU), household appliances, etc. Devices in the network.
  • RSU roadside units
  • FIG. 2 for a schematic diagram of the interaction flow of the communication method provided by the embodiment of the present application.
  • the method described in Figure 2 may include the following steps:
  • Step 201 The second terminal device sends the first data to the first terminal device.
  • the second terminal device may send the above-mentioned first data to the first terminal device in a first time slot, where the first time slot is a time slot among N time slots, and the N time slots are transmission time slots.
  • the N is an integer greater than or equal to 1.
  • the first terminal device and the second terminal device in the foregoing steps may be the vehicle equipment shown in FIG. 1, or may be the devices in the Internet of Vehicles or the Internet of Things described above.
  • Step 202 The first terminal device receives the above-mentioned first data sent by the second terminal device.
  • Step 203 The first terminal device sends a first response sequence to the second terminal device on the first time-frequency resource according to the first data, where the first response sequence is allocated to the second terminal device among the M code division multiplexing sequences.
  • One of the sequences of a time slot, the M code division multiplexing sequences are used to respond to the data sent in the N time slots on the first time-frequency resource, and the M is an integer multiple of the N.
  • the first terminal device decodes the first data to obtain a decoding result, and then sends a first response sequence to the second terminal device on the first time-frequency resource according to the decoding result.
  • Step 204 The second terminal device receives the first response sequence.
  • the aforementioned N time slots may be N consecutive sending units in the time domain, or logically consecutive N sending units.
  • the sending unit may be 1 subframe, or a time slot, or other time-frequency resources configured by the system for one transmission.
  • the above-mentioned specific value of N can be configured by a system such as a sidelink (SL) system according to actual conditions, and this solution does not limit this.
  • SL sidelink
  • the foregoing M code division multiplexing sequences may be allocated to N time slots by the base station according to an allocation rule when the network is deployed. Or it can be configured to the N time slots according to a specific protocol when the network is deployed. Or it can be allocated through the base station in the later stage after the network deployment is completed. It can also be configured according to a specific protocol later after the network deployment is completed.
  • the specific allocation time and who will allocate the allocation can be determined according to the specific situation, and this plan is not limited.
  • the device that receives the data can use the above-mentioned pre-allocated sequence to reply whether the data is correctly decoded.
  • the network device does not need to issue resource scheduling control signaling, thereby saving network overhead.
  • the device that receives data in the above N time slots may be the first terminal device described in FIG. 2 above, and the device that sends data in the N time slots may be the above The second terminal device described in FIG. 2.
  • the timeslots labeled a are the above N timeslots.
  • the sidelink physical layer shared channel (physical sidelink share channel, PSSCH) can be used to transmit the side link shared information, and the side link shared information can also be transmitted through the side link physical layer shared channel (PSSCH).
  • the uplink physical layer control channel (physical sidelink coNtrol channel, PSCCH) transmits side link control information.
  • the time slot labeled c is the time slot allocated by the system for sending the result response of whether the received data is correctly decoded through the physical sidelink feedback channel (PSFCH) of the test link physical layer feedback channel in the time slot.
  • Labeled b is the gap between time slot a and time slot c.
  • the system has allocated a PSFCH for the above N time slots, which is used for the data sent in the above N time slots (for ease of description below, the data sent in the above N time slots are called target data).
  • the response information sent by one or more devices in response to receiving the target data is sent in the same time-frequency resource (the time-frequency resource may be the first time-frequency resource described in FIG. 2 above).
  • N timeslots are defined as logically continuous timeslots, and the mapping relationship between N timeslots and their corresponding feedback resources is configured or pre-configured by the system.
  • the corresponding feedback resource includes the time-frequency resource for transmitting the response information of the target data.
  • the embodiment of the present application adopts a code division multiplexing manner to send the response information on the time-frequency resource.
  • the data transmission mode in the above N time slots may be one or more of unicast, multicast, and broadcast.
  • each of the N time slots can use unicast, multicast, or broadcast to transmit data, or some time slots can use unicast, and some time slots can use multicast to transmit data.
  • the N time slots are Other time slots carrying unicast or multicast services can use all the time-frequency resource bandwidth, especially if only one of the N time slots needs to feedback the response sequence, it is equivalent to that the receiving device on this time slot can Exclusive use of the first time-frequency resource, thereby maximizing the use of the time-frequency resource.
  • a code division multiplexing sequence is used as the above response sequence, and different sequences are used to respond to different information. Similar to the sequence of format 0 in the five formats of the NR physical uplink control channel (PUCCH), this embodiment also uses a low peak-to-average ratio zadoff-chu sequence as the base sequence. And by performing a cyclic shift in the time domain based on a base sequence, different sequences are obtained as response sequences, or it can be said that phase rotation is performed in the frequency domain based on a base sequence to obtain sequences with different phases as response sequences. This is because according to the nature of the signal in the time and frequency domain, the phase rotation of a signal in the frequency domain is equivalent to the cyclic shift of the signal in the time domain.
  • phase rotation it is necessary to consider whether multiple sequences will interfere with or alias each other when they are transmitted on the same time-frequency resource.
  • 360° of the phase domain can be divided into infinite parts as long as they can be distinguished in phase.
  • a transmission signal is caused to extend in the time domain at the receiving end, which will cause the signal to be shifted in phase.
  • the phase rotation It will cause aliasing of multiple users, that is, seriously affect its detection probability. Therefore, when a sequence is multiplexed by phase rotation, the maximum number of multiplexable sequences needs to consider the maximum transmission delay caused by its channel characteristics and communication range.
  • phase quadrature sequence the sequence obtained by performing phase rotation on a base sequence in the frequency domain can be called a phase quadrature sequence. If these phase-orthogonal sequences are multiplexed onto the same time-frequency resource for transmission, then these phase-orthogonal sequences can be called code division multiplexing sequences.
  • the phase orthogonality of the two sequences does not necessarily require that the phase difference between the two sequences is 90 degrees. As long as the two sequences can be distinguished and correctly detected at the receiving end, then the two sequences are The phase can be said to be orthogonal.
  • phase rotation exemplarily shown in FIG.
  • the phase of the base sequence is 0, perform phase rotation of 1 times ⁇ /6, 2 times ⁇ /6, 3 times ⁇ /6, ..., 11 times ⁇ /6 to obtain other code division multiplexed sequences.
  • the following uses a subchannel as an example to illustrate how to allocate response sequences in the above N time slots.
  • the total number of sequences that can be multiplexed theoretically is M', but because each device that receives the data Two sequences need to be allocated.
  • One sequence is used to reply to the correct decoded confirmation message (ACK) when the data is decoded correctly, and the other is used to reply the decoded error message (NACK) when the data is decoded incorrectly .
  • ACK decoded confirmation message
  • NACK decoded error message
  • the M sequences multiplexed in the above-mentioned sub-channel can be expressed as:
  • the M sequences multiplexed in the above sub-channels can also be expressed as:
  • the M sequences multiplexed on the subchannels are equally allocated to the N time slots for use by the equipment that receives the data sent on the N time slots, then each The number of sequences obtained by the allocation of time slots is M/N.
  • Each of the P sequence pairs includes an ACK sequence and a NACK sequence. That is, among the M/N sequences allocated in each time slot, P sequences are ACK sequences and P NACK sequences.
  • the M/N sequences obtained by the allocation of the i-th time slot among the above N time slots can be expressed as:
  • the above-mentioned m 0 represents the initial phase of the above-mentioned base sequence ⁇ , and the value of m 0 may be configured by the system or the network side.
  • the value of m 0 can also be configured as 0 by default.
  • the M/N sequences allocated by the i-th time slot among the above N time slots are expressed as:
  • the M/N sequences allocated by the i-th time slot of the above N time slots are the consecutive index numbers of the M sequences multiplexed in the above subchannels sequence.
  • the M/N sequences allocated by the i+1th time slot among the above N time slots are the M/N sequences allocated by the i-th time slot among the above N time slots.
  • 4 of the 8 sequences allocated for each time slot are ACK sequences, and the other 4 are NACK sequences. This is only an exemplary description, and the specific values of M and N are determined according to actual conditions, and this solution does not impose restrictions on this.
  • the M/N sequences allocated in the i-th time slot of the above N time slots are the basis of the above sequence multiplexed in the M sequences of the above subchannels with consecutive index numbers.
  • M/(2*N) that is, P ACK sequences are also sequences with consecutive index labels in the above M sequences.
  • P NACK sequences are also the above A sequence with consecutive index labels among M sequences.
  • P ACK sequences and P NACK sequences can form P sequence pairs.
  • index numbers 0 and 4 can form a sequence pair
  • index numbers 1 and 5 can form a sequence pair
  • index numbers 2 and 6 can form a sequence pair
  • index numbers 3 and 7 can form a sequence pair.
  • the M/N time slots allocated from the i-th time slot among the above N time slots can be expressed as:
  • ⁇ 0,1,2,...,P-1.
  • M/N sequences allocated by the i-th time slot among the above N time slots can be expressed as:
  • the calculated sequence is another P consecutive sequences with index labels.
  • the specific sorting distribution here is determined according to the actual situation, and this solution does not impose restrictions on this.
  • the above formula (5) can be decomposed into two formulas, which respectively represent the formulas of the ACK sequence and the NACK sequence.
  • the formula obtained by decomposing formula (5) is as follows:
  • P sequences with consecutive index labels in the above M sequences are obtained respectively.
  • the P sequences obtained by formula (7) are ACK sequences
  • the sequences obtained by formula (8) are NACK sequences. It may also be that the P sequences obtained by formula (7) are NACK sequences, and the sequences obtained by formula (8) are ACK sequences.
  • the specific sorting distribution is determined according to the actual situation, and this solution does not impose restrictions on this.
  • FIG. 5 exemplarily shows a schematic diagram of the phase distribution of the sequence calculated by the above formula (5) or formula (6) or by formula (7) and formula (8) when the above m 0 is configured as 0.
  • the ACK sequence and the NACK sequence in each slot are continuous.
  • the index numbers of P NACK sequences in time slot 0 are 0,1,2,...,P-1
  • the index numbers of P ACK sequences are P,P+1,P+2,...,2P -1
  • the index numbers of P NACK sequences in time slot 1 are 2P, 2P+1, 2P+2,..., 3P-1
  • the index numbers of P ACK sequences are 3P, 3P+1, 3P+2,..., 4P-1.
  • the M/N sequences obtained by the i-th time slot allocation among the above N time slots are P sequence pairs, and each sequence pair can be determined by the above formula (7) and formula ( 8)
  • Two methods are introduced below. Possible optimized embodiments. These two embodiments are based on the above-mentioned sequence allocation embodiment, which can reduce the interference between sequences sent on the same time-frequency resource to a certain extent.
  • the i-th time slot among the above N time slots is a multicast transmission mode
  • the i+1-th time slot is a unicast transmission mode
  • the phase of the sequence fed back by the device that receives the data in the i+1th time slot is closer to the phase of the last sequence of the response sequence of the i-th time slot, that is, the phase The difference is small and it is easy to interfere with each other.
  • the value range of m 0 can be an integer greater than or equal to 1, but less than 2*P and not equal to P. The specific value can be determined according to the actual situation, and this solution does not limit this.
  • the sequence assigned to the device by formula (9), the index labels of the P ACK sequences in time slot 0 are no longer continuous, because when the sequence is allocated, it is no longer from the index.
  • the sequence labeled 0 is allocated starting from the sequence labeled Q (Q can be m 0 ), but in order to reduce the interference between NACK and ACK, try to make the NACK sequence and the ACK sequence have their respective index labels consecutive the sequence of. Since this scheme first allocates from the NACK sequence, the index numbers of the NACK sequence are still continuous. Assign P sequences starting from the index number Q as NACK sequences, and the index number of the last sequence of the P sequences is Q+P-1. Then start to allocate the ACK sequence, starting from Q+P, when the sequence with the largest index label in the time slot is allocated, return to the sequence with the index label of 0 and continue to allocate until P ACK sequences.
  • time slot 1 The allocation process in other time slots such as time slot 1 is similar to the allocation process to equipment in time slot 0 described above, and will not be repeated here. With this design, the sequence in each time slot is still a sequence with consecutive index labels, but the NACK sequence and ACK sequence in the time slot will have a set of sequences that are not consecutive sequences with index labels.
  • the ACK sequence with the index number Q+3P can be assigned as the response sequence.
  • the phase interval also greatly increases ⁇ *Q, thereby reducing interference and increasing the probability of correct sequence detection.
  • the second possible embodiment In the first possible embodiment mentioned above, although the interference between the sequences between the time slots is reduced in the example of FIG. 6, the index numbers of the ACK sequences are no longer continuous, so they are NACKed.
  • the sequence separation increases the interference between the ACK sequence and the NACK sequence in the same time slot.
  • the arrangement of the ACK sequence and the NACK sequence in each time slot can be adjusted while ensuring that the interference of the sequence between the time slots is reduced, so that the index numbers of the ACK sequence and the NACK sequence are respectively continuous.
  • the value range of m 0 can be greater than or equal to 1, but less than 2*P And is not equal to an integer of P. The specific value can be determined according to the actual situation, and this solution does not limit this.
  • the above formula (10) can be decomposed into two formulas, which respectively represent the formulas of the ACK sequence and the NACK sequence.
  • the formula obtained by decomposing formula (10) is as follows:
  • P sequences with consecutive index labels in the above M sequences are obtained respectively.
  • the P sequences obtained by formula (11) are ACK sequences
  • the sequences obtained by formula (12) are NACK sequences. It may also be that the P sequences obtained by formula (11) are NACK sequences, and the sequences obtained by formula (12) are ACK sequences.
  • the specific sorting distribution is determined according to the actual situation, and this solution does not impose restrictions on this.
  • the “ACK sequence with consecutive index labels” is an example of the process of allocating sequences.
  • time slot 0 in Figure 5 when the sequence is allocated to the device for use, it is allocated from the sequence pair with index labels 0 and P in the order of the index labels from small to large, for example, first label the indexes with 0 and P The sequence pair of is allocated to device 1, and then the sequence pair with index number 1 and P+1 is allocated to device 2, and then the sequence pair with index number 2 and P+2 is allocated to device 3 and so on.
  • time slot 0 of Fig. 7 when the sequence is allocated to the device for use, it is allocated from the sequence pair with the index number G and P+G in the descending order of the index label.
  • the sequence When the sequence is allocated to the index label When it is a sequence pair of P-1 and 2P-1, it is possible to return to the sequence pair with index labels 0 and P to allocate in ascending order of index labels, until the sequence pairs in the time slot are allocated.
  • sequence pairs +2 and P+G+2 are allocated to device 3 for use, etc., after the sequence pairs with index numbers P-1 and 2P-1 are allocated to device w for use, return to the index number 0 and P The sequence pair is allocated to the device w+1 for use and so on.
  • time slot 1 The allocation process in other time slots such as time slot 1 is similar to the allocation process to equipment in time slot 0 described above, and will not be repeated here.
  • the value of the index label G in FIG. 7 can be calculated by (m 0 mod P) mod M.
  • the embodiment of the present application can reduce the interference between the ACK sequence and the NACK sequence in the time slot while ensuring that the interference of the sequence between the time slots is reduced through the above sequence allocation method.
  • the signal bandwidth of each of the M code division multiplexing sequences is the same as the bandwidth of the first time-frequency resource, and the bandwidth of the first time-frequency resource is the same as the bandwidth of the first time-frequency resource.
  • the bandwidth of the sub-channel where the resource is located is the same. . This design can make full use of resources, and can increase the probability of correct signal detection.
  • the device occupies multiple subchannels for transmission when sending data in the i-th time slot of the above N time slots, for example, it occupies K subchannels for transmission, where K is greater than or equal to 2. Integer. If the device occupies the K sub-channels to separately send the data to another device, that is, the communication between the device and the other device is unicast communication. In this case, after the other device receives the data, It is possible to choose to send a sequence in response to whether the data is decoded correctly to the above-mentioned device that sends the data on the K subchannels.
  • the other device may also select one or more of the K sub-channels to send a sequence that responds to whether the data is decoded correctly to the device that sends the data.
  • the response sequence sent by the other device to the device that sends the data is a sequence allocated to the other device based on the allocation method described above. For specific allocation, refer to the description of the foregoing method embodiment, which is not repeated here.
  • the device occupies multiple subchannels for transmission when sending data in the i-th time slot of the above N time slots, for example, occupies K subchannels for transmission. If the device occupies the K sub-channels to send the data to multiple devices, that is, the communication between the device and the multiple devices is multicast communication, that is, the data is multicast data.
  • the Multiple devices may respectively occupy the K sub-channels to send a sequence that responds to whether the data is decoded correctly to the device that sends the data. This indicates that on the K subchannels, only P response sequences can be sent at most, because at most P pairs of sequence pairs are allocated on the i-th time slot, and each feedback sequence occupies K subchannels to send.
  • the above-mentioned multiple devices may also select one of the above-mentioned K sub-channels to send a sequence that responds to whether the data is decoded correctly to the above-mentioned device that sends the data. This indicates that at most K*P response sequences can be sent on the K subchannels.
  • This implementation method increases the capacity of the device response sequence in the multicast transmission mode by means of frequency division multiplexing, and achieves the purpose of multicast expansion.
  • the above-mentioned multiple devices may also select more than one sub-channel on the above-mentioned K sub-channels to send a sequence that responds to whether the data is decoded correctly to the above-mentioned device that sends the data.
  • the specific selection of occupying several sub-channels to transmit the sequence is determined according to the actual situation, and this solution does not limit it many times.
  • the response sequence sent by the multiple devices to the device that sends the data is a sequence allocated to the multiple devices based on the foregoing allocation method.
  • a method is designed in which N time slots share a time-frequency resource to send a response sequence of whether the received data is decoded correctly.
  • This solution achieves the purpose of code division multiplexing by using phase rotation in the frequency domain or cyclic shift in the time domain. So that each time slot can be allocated to the corresponding response sequence.
  • unicast, multicast, and broadcast coexist in the same resource pool, no additional signaling overhead is needed, and corresponding time-frequency resources are allocated for each time slot in advance.
  • the NACK and ACK sequences in the response sequence corresponding to a feedback time slot are designed to be continuous to reduce the interference between NACK and ACK sequences.
  • each terminal device includes a hardware structure and/or software module corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiment of the present application may divide the terminal device into functional modules according to the foregoing method examples.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software function modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 8 shows a schematic diagram of a possible logical structure of the first terminal device involved in the foregoing embodiment.
  • the first terminal device 800 includes: a receiving unit 801 and a transmitting unit 801; Unit 802.
  • the receiving unit 801 is configured to support the first terminal device to perform the steps of receiving information in the method embodiment shown above.
  • the sending unit 802 is configured to support the first terminal device to perform the steps of sending information in the foregoing method embodiment.
  • the first terminal device 800 may further include a processing unit and a storage unit.
  • the storage unit is used to store computer programs and data.
  • the processing unit may call the computer program and/or data of the storage unit, so that the first terminal device 800 receives the first data from the second terminal device in the first time slot; the first time slot is one of the N time slots For a time slot, the N is an integer greater than or equal to 1; then, according to the first data, a first response sequence is sent to the second terminal device on the first time-frequency resource, where the first response sequence is One of the M code division multiplexing sequences allocated to the first time slot, and the M code division multiplexing sequences are used to respond to the N time slots on the first time-frequency resource For sent data, the M is an integer multiple of the N.
  • the foregoing processing unit may be a processor or a processing circuit.
  • the receiving unit 801 may be a transceiving unit, a transceiver, a receiver, or a receiving circuit or an interface circuit.
  • the sending unit 802 may be a transceiving unit, a transceiver, a transmitter, or a sending circuit or an interface circuit.
  • the aforementioned storage unit may be a memory.
  • the foregoing processing unit, receiving unit, sending unit, and storage unit may be integrated or coupled together, or may be separated.
  • FIG. 9 shows a schematic diagram of a possible hardware structure of the first terminal device involved in the above-mentioned embodiments provided by the embodiments of this application.
  • the first terminal device 900 may include: one or more processors 901, one or more memories 902, a network interface 903, one or more receivers 905, one or more transmitters 906, and one Or multiple antennas 907. These components can be connected through a bus 904 or in other ways.
  • FIG. 9 uses a bus connection as an example. among them:
  • the network interface 903 can be used for the first terminal device 900 to communicate with other communication devices, such as network devices.
  • the network interface 903 may be a wired interface.
  • the receiver 905 may also be used to perform reception processing on the mobile communication signal received by the antenna 907, such as signal demodulation.
  • the transmitter 906 may be used to transmit the signal output by the processor 901, such as signal modulation.
  • the receiver 905 may be regarded as a wireless demodulator, and the transmitter 906 may be regarded as a wireless modulator.
  • the number of receivers 905 may be one or more, and the number of transmitters 906 may also be one or more.
  • the antenna 907 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in a free space, or convert electromagnetic waves in a free space into electromagnetic energy in a transmission line.
  • the number of antennas 907 may be one or more.
  • the memory 902 may be coupled with the processor 901 through a bus 904 or an input/output port, and the memory 902 may also be integrated with the processor 901.
  • the memory 902 is used to store various software programs and/or multiple sets of instructions or data.
  • the memory 902 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices.
  • the memory 902 may store an operating system (hereinafter referred to as the system), such as embedded operating systems such as uCOS, VxWorks, and RTLinux.
  • the memory 902 may also store a network communication program, and the network communication program may be used to communicate with one or more additional devices, one or more user devices, and one or more network devices.
  • the processor 901 may be a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination for realizing certain functions, for example, including a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on.
  • the processor 901 may be used to read and execute computer-readable instructions.
  • the processor 901 may be configured to call a program stored in the memory 902, such as a program for implementing the communication method provided by one or more embodiments of the present application on the first terminal device side, and execute instructions contained in the program.
  • the first terminal device 900 shown in FIG. 9 is only an implementation of the embodiment of the present application. In practical applications, the first terminal device 900 may also include more or fewer components, which is not limited here. . For the specific implementation of the first terminal device 900, reference may be made to the related description in the foregoing method embodiment, which will not be repeated here.
  • FIG. 10 shows a schematic diagram of a possible logical structure of the second terminal device involved in the above embodiment.
  • the second terminal device 1000 includes: a receiving unit 1001 and a transmitting unit 1001. Unit 1002.
  • the receiving unit 1001 is configured to support the second terminal device to perform the steps of receiving information in the method embodiment shown above.
  • the sending unit 1002 is configured to support the second terminal device to perform the steps of sending information in the foregoing method embodiment.
  • the second terminal device 1000 may further include a processing unit and a storage unit.
  • the storage unit is used to store computer programs and data.
  • the processing unit may call the computer program and/or data of the storage unit, so that the second terminal device 1000 sends the first data to the first terminal device in the first time slot; the first time slot is one of the N time slots For the time slot, the N is an integer greater than or equal to 1; then, the first response sequence sent by the first terminal device on the first time-frequency resource according to the first data is received, the first response sequence Is one of the M code division multiplexing sequences allocated to the first time slot, and the M code division multiplexing sequences are used to respond to the N time slots on the first time-frequency resource For data sent on the above, the M is an integer multiple of the N.
  • the foregoing processing unit may be a processor or a processing circuit.
  • the receiving unit 1001 may be a transceiving unit, a transceiver, a receiver, or a receiving circuit or an interface circuit, or the like.
  • the sending unit 1002 may be a transceiving unit, a transceiver, a transmitter, or a sending circuit or an interface circuit.
  • the aforementioned storage unit may be a memory.
  • the foregoing processing unit, receiving unit, sending unit, and storage unit may be integrated or coupled together, or may be separated.
  • FIG. 11 shows a schematic diagram of a possible hardware structure of the second terminal device involved in the above-mentioned embodiments provided by the embodiments of this application.
  • the second terminal device 1100 may include: one or more processors 1101, one or more memories 1102, a network interface 1103, one or more receivers 1105, one or more transmitters 1106, and one Or multiple antennas 1107. These components can be connected through a bus 1104 or other ways.
  • FIG. 11 uses a bus connection as an example. among them:
  • the network interface 1103 can be used for the second terminal device 1100 to communicate with other communication devices, such as network devices.
  • the network interface 1103 may be a wired interface.
  • the receiver 1105 may also be used to perform receiving processing on the mobile communication signal received by the antenna 1107, such as signal demodulation.
  • the transmitter 1106 may be used to transmit the signal output by the processor 1101, such as signal modulation.
  • the receiver 1105 may be regarded as a wireless demodulator, and the transmitter 1106 may be regarded as a wireless modulator.
  • the number of receivers 1105 may be one or more, and the number of transmitters 1106 may also be one or more.
  • the antenna 1107 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in a free space, or convert electromagnetic waves in a free space into electromagnetic energy in a transmission line.
  • the number of antennas 1107 may be one or more.
  • the memory 1102 may be coupled with the processor 1101 through a bus 1104 or an input/output port, and the memory 1102 may also be integrated with the processor 1101.
  • the memory 1102 is used to store various software programs and/or multiple sets of instructions or data.
  • the memory 1102 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices.
  • the memory 1102 may store an operating system (hereinafter referred to as the system), such as embedded operating systems such as uCOS, VxWorks, and RTLinux.
  • the memory 1102 may also store a network communication program, and the network communication program may be used to communicate with one or more additional devices, one or more user devices, and one or more network devices.
  • the processor 1101 may be a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination for realizing certain functions, for example, including a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on.
  • the processor 1101 may be used to read and execute computer-readable instructions.
  • the processor 1101 communication chip 1200 may be used to call a program stored in the memory 1102, such as the implementation program of the communication method provided by one or more embodiments of the present application on the second terminal device side, and execute the program included in the program. instruction.
  • the second terminal device 1100 shown in FIG. 11 is only an implementation of the embodiment of the present application. In practical applications, the second terminal device 1100 may also include more or fewer components, which is not limited here. . For the specific implementation of the second terminal device 1100, reference may be made to the relevant description in the foregoing method embodiment, which will not be repeated here.
  • the communication system includes one or more first terminal devices and one or more second terminal devices.
  • the first terminal device may be the first terminal device shown in FIG. 8.
  • the terminal device 800, the second terminal device may be the second terminal device 1000 described in FIG. 10.
  • the first terminal device may be the first terminal device 900 described in FIG. 9, and the second terminal device may be the second terminal device 1100 described in FIG. 11.
  • the communication chip 1200 may include: a processor 1201, and one or more interfaces 1202 coupled to the processor 1201. among them:
  • the processor 1201 can be used to read and execute computer readable instructions.
  • the processor 1201 may mainly include a controller, an arithmetic unit, and a register.
  • the controller is mainly responsible for the instruction decoding, and sends out control signals for the operation corresponding to the instruction.
  • the arithmetic unit is mainly responsible for performing fixed-point or floating-point arithmetic operations, shift operations and logic operations, etc., and can also perform address operations and conversions.
  • the register is mainly responsible for storing the register operands and intermediate operation results temporarily stored during the execution of the instruction.
  • the hardware architecture of the processor 1201 may be an application specific integrated circuit (ASIC) architecture, a microprocessor without interlocked pipeline stage architecture (MIPS) architecture, and advanced streamlining. Instruction set machine (advanced RISC machines, ARM) architecture or NP architecture, etc.
  • the processor 1201 may be single-core or multi-core.
  • the interface 1202 can be used to input data to be processed to the processor 1201, and can output the processing result of the processor 1201 to the outside.
  • the interface 1202 may be a general purpose input output (GPIO) interface, and may be connected to multiple peripheral devices (such as a display (LCD), radio frequency (RF) module, etc.).
  • the interface 1202 may be connected to the processor 1201 through the bus 1203.
  • the processor 1201 may be configured to call the implementation program of the communication method provided by one or more embodiments of the present application on the side of the first terminal device or the second terminal device from the memory, and execute the instructions contained in the program.
  • the memory may be integrated with the processor 1201. In this case, the memory is used as a part of the communication chip 1200. Alternatively, the memory is used as an external component of the communication chip 1200, and the processor 1201 calls the instructions or data stored in the memory through the interface 1202.
  • the interface 1202 can be used to output the execution result of the processor 1201.
  • the interface 1202 can be used to output the execution result of the processor 1201.
  • the aforementioned communication chip 1200 may be a system chip (System on a Chip, SoC).
  • processor 1201 and the interface 1202 may be implemented through hardware design, may also be implemented through software design, or may be implemented through a combination of software and hardware, which is not limited here.
  • the embodiment of the present invention also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement any one of the foregoing on the first terminal device side. Communication method.
  • the embodiment of the present invention also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement any one of the foregoing on the second terminal device side. Communication method.
  • the embodiment of the present invention also provides a computer program product.
  • the computer program product is read and executed by a computer, any one of the aforementioned items on the first terminal device or any one of the aforementioned items on the second terminal device is executed.
  • the communication method described will be executed.
  • the embodiment of the present invention also provides a computer program.
  • the computer program When the computer program is executed on a computer, it will enable the computer to implement any of the foregoing on the first terminal device or any of the foregoing on the second terminal device.
  • the first terminal device or the second terminal device in the embodiment of the present invention may be replaced by a communication device.
  • a method is designed in which N time slots share a time-frequency resource to send a response sequence to whether the received data is decoded correctly.
  • This solution achieves the purpose of code division multiplexing by using phase rotation in the frequency domain or cyclic shift in the time domain. So that each time slot can be allocated to the corresponding response sequence.
  • unicast, multicast, and broadcast coexist in the same resource pool, no additional signaling overhead is needed, and corresponding time-frequency resources are allocated for each time slot in advance.
  • the NACK and ACK sequences in the response sequence corresponding to a feedback time slot are designed to be continuous respectively to reduce the interference between the NACK and ACK sequences.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present invention are generated in whole or in part.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • Computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • computer instructions may be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to transmit to another website site, computer, server or data center.
  • the 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 data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de communication et un dispositif associé. Le procédé de communication comprend les étapes suivantes : un premier dispositif terminal reçoit des premières données d'un second dispositif terminal dans un premier intervalle de temps, le premier intervalle de temps étant l'un des N intervalles de temps, N étant un nombre entier supérieur ou égal à 1 ; le premier dispositif terminal envoie une première séquence de réponse au second dispositif terminal sur une première ressource temps-fréquence en fonction des premières données, la première séquence de réponse étant l'une des séquences attribuées au premier intervalle de temps parmi M séquences de multiplexage par répartition de code, les M séquences de multiplexage par répartition de code étant utilisées pour répondre sur la première ressource temps-fréquence aux données envoyées dans les N intervalles de temps, et M étant un multiple entier de N. Selon les modes de réalisation de l'invention, la surcharge de réseau peut être réduite.
PCT/CN2019/115811 2019-11-05 2019-11-05 Procédé de communication et dispositif associé WO2021087774A1 (fr)

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CN102957520A (zh) * 2007-05-18 2013-03-06 高通股份有限公司 无线通信系统中ack和cqi的导频结构
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