WO2019233261A1 - 一种应答信息的发送和接收方法、通信设备及网络设备 - Google Patents

一种应答信息的发送和接收方法、通信设备及网络设备 Download PDF

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Publication number
WO2019233261A1
WO2019233261A1 PCT/CN2019/087408 CN2019087408W WO2019233261A1 WO 2019233261 A1 WO2019233261 A1 WO 2019233261A1 CN 2019087408 W CN2019087408 W CN 2019087408W WO 2019233261 A1 WO2019233261 A1 WO 2019233261A1
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Prior art keywords
communication device
resource
group
control information
data
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PCT/CN2019/087408
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English (en)
French (fr)
Inventor
苏宏家
向铮铮
张锦芳
卢磊
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华为技术有限公司
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Priority to EP19815167.2A priority Critical patent/EP3780672B1/en
Publication of WO2019233261A1 publication Critical patent/WO2019233261A1/zh
Priority to US17/113,855 priority patent/US11496994B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • 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
    • 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
    • H04W72/0466—Wireless resource allocation based on the type of the allocated resource the resource being a scrambling code
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0093—Point-to-multipoint
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users

Definitions

  • Embodiments of the present application relate to a communication system, and in particular, to a method for transmitting and receiving response information, a communication device, and a network device.
  • V2I / N Vehicle toto infrastructure
  • V2X Vehicle toto infrastructure
  • the first terminal device periodically sends some of its own information, such as location, speed, and intent information, to multiple other terminal devices in a multicast or broadcast manner to improve the safety of the vehicle. Sex.
  • the first terminal device cannot know whether multiple other terminal devices have correctly received the above information sent by the first terminal device, and cannot meet the reliability requirements of V2X communication.
  • Embodiments of the present application provide a method, a communication device, a network device, and a system for sending and receiving response information, which can improve the reliability of V2X communication.
  • a method for receiving response information including: a first communication device acquiring a first resource and a second resource; the first communication device sending a first communication device to at least one communication device in the group on the first resource; Control information and first data, the first communication device and the at least one communication device in the group belong to a first communication device group, and the first communication device and the at least one communication device in the group each have the first communication device A group identifier of a communication device group, and the first control information is used to indicate, among the first resource, a resource that sends the first data, the second resource, and a group identifier of the first communication device group; The first communication device receives response information from the second communication device on the second resource, and the response information is used to feedback whether the second communication device correctly receives the first data, and the second communication device belongs to The at least one communication device in the group.
  • the first communication device acquires the first resource and the second resource, and sends the first control information and the first data to the second communication device on the first resource, and from the second communication device on the second resource. Receiving response information, therefore, improves the reliability of V2X communication.
  • the first communication device receives first downlink control information from a network device, the first downlink control information is used to indicate the first resource and the second resource, and the first The downlink control information is scrambled by the group identifier of the first communication device group; the first communication device acquiring the first resource and the second resource includes: the first communication device descrambling the first downlink control The information acquires the first resource and the second resource.
  • the method before the first communication device receives the first downlink control information from a network device, the method further includes: the first communication device sends a schedule to the network device on a third resource. Requesting that the third resource has a corresponding relationship with the first communication device group, wherein the scheduling request is used to request the network device to schedule the first resource and the second resource; and The group identifier of the first communication device group that disturbs the first downlink control information is obtained by the network device according to the corresponding relationship.
  • the first communication device sends a buffer status report and a scheduling request to the network device, and the buffer status report includes a group identifier of a first communication device group to which the first communication device belongs.
  • the buffer status report is used to request the network device to schedule the second resource, and the scheduling request is used to request the network device to schedule the first resource.
  • acquiring the first resource and the second resource by the first communication device includes: the first communication device selecting the first resource and the second resource from a resource pool.
  • the method further includes: sending, by the first communication device on the first resource, the first control information and the first data to at least one out-of-group communication device, the At least one communication device outside the group does not belong to the first communication device group, and the at least one communication device outside the group does not have a group identifier of the first communication device group. Therefore, the communication devices outside the group can also receive the first data from the first communication device according to the first control information, and the reliability of communication devices other than the first communication device group can be improved.
  • the first control information is further used to indicate an interval k timeslots between the first resource and the second resource, and the first resource belongs to timeslot n, then The second resource belongs to a time slot n + k or a time slot n + k-1, where n is an integer, and k is a positive integer.
  • a first communication device including: a processing unit configured to obtain a first resource and a second resource; and a sending unit configured to send the first resource to at least one communication device in the group on the first resource.
  • Control information and first data, the first communication device and the at least one communication device in the group belong to a first communication device group, and the first communication device and the at least one communication device in the group both have the first A group identifier of a communication device group, and the first control information is used to indicate, among the first resource, a resource that sends the first data, the second resource, and a group identifier of the first communication device group;
  • a receiving unit For receiving response information from a second communication device on the second resource, and the response information is used to feedback whether the second communication device correctly receives the first data, and the second communication device belongs to the At least one communication device in the group.
  • the first communication device acquires the first resource and the second resource, and sends the first control information and the first data to the second communication device on the first resource, and from the second communication device on the second resource. Receiving response information, therefore, improves the reliability of V2X communication.
  • the receiving unit is further configured to receive first downlink control information from a network device, where the first downlink control information is used to indicate the first resource and the second resource, and The first downlink control information is scrambled by the group identifier of the first communication device group; the processing unit for obtaining the first resource and the second resource includes: the processing unit descrambles the first downlink The control information acquires the first resource and the second resource.
  • the method before the receiving unit receives the first downlink control information from a network device, the method further includes: the sending unit, configured to send a scheduling request to the network device on a third resource.
  • the third resource has a corresponding relationship with the first communication device group, wherein the scheduling request is used to request the network device to schedule the first resource and the second resource; and is used for scrambling
  • the group identifier of the first communication device group of the first downlink control information is obtained by the network device according to the corresponding relationship.
  • the sending unit is configured to send a buffer status report and a scheduling request to the network device, and the buffer status report includes a group of a first communication device group to which the first communication device belongs. Identification, the buffer status report is used to request the network device to schedule the second resource, and the scheduling request is used to request the network device to schedule the first resource.
  • the processing unit for acquiring the first resource and the second resource includes: the processing unit selecting the first resource and the second resource from a resource pool.
  • the sending unit is further configured to send, on the first resource, the first control information and the first data to at least one communication device outside the group, and the at least one outside group A communication device does not belong to the first communication device group, and the at least one communication device outside the group does not have a group identifier of the first communication device group. Therefore, the communication devices outside the group can also receive the first data from the first communication device according to the first control information, and the reliability of communication devices other than the first communication device group can be improved.
  • the first control information is further used to indicate an interval k timeslots between the first resource and the second resource, and the first resource belongs to timeslot n, then The second resource belongs to a time slot n + k or a time slot n + k-1, where n is an integer, and k is a positive integer.
  • a method for sending response information including: the second communication device receives first control information and first data from the first communication device on the first resource, and the second communication device belongs to at least one group A communication device, the first communication device and the at least one communication device in the group belong to a first communication device group, and the first communication device and the second communication device each have a group identifier of the first communication device group
  • the first control information is used to indicate, among the first resource, a resource that sends the first data, a second resource, and a group identifier of the first communication device group; the second communication device is in the first
  • the second resource sends response information to the first communication device, and the response information is used to feedback whether the second communication device correctly receives the first data.
  • the first communication device acquires the first resource and the second resource, and sends the first control information and the first data to the second communication device on the first resource, and from the second communication device on the second resource. Receiving response information, therefore, improves the reliability of V2X communication.
  • the method further includes: the second communication device receives first downlink control information from a network device, and the first downlink control information is used to indicate the first resource and the second Resource, the first downlink control information is scrambled by the group identifier of the first communication device group; the second communication device obtains the first resource and the second by descrambling the first downlink control information Resources.
  • a second communication device including: a receiving unit configured to receive first control information and first data from a first communication device on a first resource, the second communication device belonging to at least one group A communication device, the first communication device and the at least one communication device in the group belong to a first communication device group, and the first communication device and the second communication device each have a group identifier of the first communication device group
  • the first control information is used to indicate, among the first resources, a resource that sends the first data, a second resource, and a group identifier of the first communication device group; and a sending unit is configured to The resource sends response information to the first communication device, and the response information is used to feedback whether the second communication device correctly receives the first data.
  • the first communication device acquires the first resource and the second resource, and sends the first control information and the first data to the second communication device on the first resource, and from the second communication device on the second resource. Receiving response information, therefore, improves the reliability of V2X communication.
  • the receiving unit is further configured to receive first downlink control information from a network device, where the first downlink control information is used to indicate the first resource and the second resource, and The first downlink control information is scrambled by a group identifier of the first communication device group;
  • the second communication device further includes a processing unit, and the processing unit is configured to obtain the first downlink control information by descrambling the first downlink control information. The first resource and the second resource.
  • a method for sending downlink control information including: a network device receives a scheduling request from a first communication device on a third resource, wherein the third resource has a correspondence relationship with the first communication device group
  • the scheduling request is used to request the network device to schedule a first resource that transmits first control information and first data and a second resource that transmits response information
  • the first resource is used by the first communication device to send at least
  • the communication devices in a group send the first control information and the first data
  • the second resource is used by the second communication device to send response information to the first communication device, and the response information is used to feedback the second communication device.
  • the second communication device belongs to the at least one communication device in the group, the first communication device and the at least one communication device in the group belong to the first communication device group, and the first A communication device and the at least one communication device in the group each have a group identifier of the first communication device group;
  • the network device is based on the third resource and the The correspondence relationship obtains a group identifier of a first communication device group to which the first communication device belongs;
  • the network device sends downlink control information to the first communication device and the at least one communication device in the group, and the first down
  • the row control information is used to indicate the first resource and the second resource, and the first downlink control information is scrambled by a group identifier of the first communication device group.
  • the first communication device acquires the first resource and the second resource, and sends the first control information and the first data to the second communication device on the first resource, and from the second communication device on the second resource. Receiving response information, therefore, improves the reliability of V2X communication.
  • the first control information is further used to indicate an interval k timeslots between the first resource and the second resource, and the first resource belongs to timeslot n, then The second resource belongs to a time slot n + k or a time slot n + k-1, where n is an integer, and k is a positive integer.
  • a network device including: a receiving unit configured to receive a scheduling request from a first communication device on a third resource, wherein the third resource has a correspondence relationship with the first communication device group,
  • the scheduling request is used to request the network device to schedule a first resource that transmits first control information and first data, and a second resource that transmits response information, and the first resource is used by the first communication device to at least one
  • the communication devices in the group send the first control information and the first data
  • the second resource is used by the second communication device to send response information to the first communication device, and the response information is used to feedback whether the second communication device is Receiving the first data correctly, the second communication device belongs to the at least one communication device in the group, the first communication device and the at least one communication device in the group belong to the first communication device group, and the first Both the communication device and the at least one communication device in the group have a group identifier of the first communication device group
  • a processing unit is configured to, according to the third resource and the corresponding A group
  • the first communication device acquires the first resource and the second resource, and sends the first control information and the first data to the second communication device on the first resource, and from the second communication device on the second resource. Receiving response information, therefore, improves the reliability of V2X communication.
  • the first control information is further used to indicate an interval k timeslots between the first resource and the second resource, and the first resource belongs to timeslot n, then The second resource belongs to a time slot n + k or a time slot n + k-1, where n is an integer, and k is a positive integer.
  • a method for sending downlink control information including: a network device receives a buffer status report and a scheduling request from a first communication device, and the buffer status report includes a first communication device to which the first communication device belongs A group identifier of a group, the buffer status report is used to request the network device to schedule a second resource for transmitting response information, and the scheduling request is used to request the network device to schedule a first transmission of first control information and first data A resource, the first resource is used by the first communication device to send the first control information and first data to at least one communication device in the group, and the second resource is used by the second communication device to the first The communication device sends response information, and the response information is used to feedback whether the second communication device correctly receives the first data, the second communication device belongs to the at least one communication device in the group, and the first communication device communicates with all The at least one communication device in the group belongs to a first communication device group, and the first communication device and the at least one communication device in the group both have A group
  • the first communication device acquires the first resource and the second resource, and sends the first control information and the first data to the second communication device on the first resource, and from the second communication device on the second resource. Receiving response information, therefore, improves the reliability of V2X communication.
  • the first control information is further used to indicate an interval k timeslots between the first resource and the second resource, and the first resource belongs to timeslot n, then The second resource belongs to a time slot n + k or a time slot n + k-1, where n is an integer, and k is a positive integer.
  • a network device including: a receiving unit configured to receive a buffer status report and a scheduling request from a first communication device, where the buffer status report includes a first communication device group to which the first communication device belongs The group identifier, the buffer status report is used to request the network device to schedule a second resource for transmitting response information, and the scheduling request is used to request the network device to schedule a first resource for transmitting first control information and first data
  • the first resource is used by the first communication device to send the first control information and the first data to at least one communication device in the group
  • the second resource is used by the second communication device to the first communication
  • the device sends response information, and the response information is used to feedback whether a second communication device correctly receives the first data, the second communication device belongs to the at least one communication device in the group, and the first communication device communicates with the At least one communication device in the group belongs to a first communication device group, and both the first communication device and the at least one communication device in the group have the first communication device.
  • a group identifier of a device group configured to send downlink control information to the first communication device and the at least one communication device in the group, where the first downlink control information is used to indicate the first resource and the Two resources, the first downlink control information is scrambled by a group identifier of the first communication device group.
  • the first communication device acquires the first resource and the second resource, and sends the first control information and the first data to the second communication device on the first resource, and from the second communication device on the second resource. Receiving response information, therefore, improves the reliability of V2X communication.
  • the first control information is further used to indicate an interval k timeslots between the first resource and the second resource, and the first resource belongs to timeslot n, then The second resource belongs to a time slot n + k or a time slot n + k-1, where n is an integer, and k is a positive integer.
  • an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores instructions, and when the computer-readable storage medium is run on a computer, causes the computer to execute the methods described in the foregoing aspects.
  • an embodiment of the present application provides a computer program product.
  • the program product stores computer software instructions used by the first communication device or the second communication device, and the computer software instructions include a program for executing the solution described in the foregoing aspect. program of.
  • an embodiment of the present application provides a chip for performing the method involved in the foregoing aspect.
  • the chip may include a part having functions of a memory, a processor, a transmitter, a receiver, and / or a transceiver.
  • the memory stores instructions, code, and / or data to perform the methods involved in the foregoing aspects.
  • an embodiment of the present application provides a system, where the system includes the first communication device and the second communication device in the foregoing aspect.
  • FIG. 1 is a schematic architecture diagram of a system according to an embodiment of the present application.
  • FIG. 2 is a first communication device according to an embodiment of the present application.
  • FIG. 3 is a second communication device according to an embodiment of the present application.
  • FIG. 4 is a third communication device according to an embodiment of the present application.
  • FIG. 5 is a fourth communication device according to an embodiment of the present application.
  • FIG. 6 is a fifth communication device according to an embodiment of the present application.
  • FIG. 7 is a network device according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a response information transmission method according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a method for acquiring a first resource and a second resource according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a method for selecting a first resource and a second resource according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a response information transmission resource according to an embodiment of the present application.
  • the first communication device sends data to one or more other communication devices.
  • This data may be information such as the position, speed, and intent of the first communication device, where the intent information It can be information such as steering, parallel, U-turn, acceleration, braking, etc., or information such as audio and video.
  • multiple other communication devices can form a communication device group with the first communication device, for example, driving in a vehicle group (Platooning)
  • the first communication device may be a lead vehicle, and multiple other communication devices may include second to fourth communication devices, for example.
  • the fourth to fourth communication devices belong to the same communication device group as the first communication device. Therefore, the second to fourth communication devices may be referred to as communication devices in the group, and the first to fourth communication devices form a fleet.
  • the second to fourth communication devices After the second to fourth communication devices receive the data, if the second, third, or fourth communication device receives the data correctly, send acknowledgement (ACK) response information to the first communication device, At this time, the first communication device will no longer send the data to the second, third or fourth communication device, and if the second, third or fourth communication device does not receive the data correctly, it will send the data to the first
  • the communication device sends a negative acknowledgement (NACK) response message.
  • NACK negative acknowledgement
  • the first communication device sends the data to the second, third, or fourth communication device again, and the second, third, or fourth The communication device can receive the data again, which improves the reliability of multicast or broadcast data transmission.
  • multiple other communication devices may also include more communication devices. These communication devices do not belong to the communication device group composed of the first to fourth communication devices, that is, these communication devices are out-of-group communication devices, for example, the fifth communication device.
  • the device is an out-of-group communication device, and the first communication device may also broadcast data to the fifth communication device.
  • the resources for the V2X communication between the first communication device and the second to fourth communication devices can be allocated by the network device in the mode 3V2X communication, and can be autonomously selected by the first communication device in the mode 4V2X communication.
  • the network device involved in this application is a device that is deployed in a wireless access network to provide wireless communication functions for the first to fifth communication devices.
  • the network device may be a base station (Base, Station, BS), for example, a macro base station, a micro base station, a relay station, or an access point, and so on. It may also be another form of device, such as a street lamp, a roadside unit (RSU).
  • BS Base, Station
  • RSU roadside unit
  • the names of devices with network device functions may be different. For example, they are network devices or base stations in the fifth generation 5G network.
  • eNB Long Term Evolution, In the LTE
  • NodeB Long Term Evolution, In the LTE
  • NodeB and so on or the roadside unit in V2X communication ( Road Side Unit (RSU), or the above-mentioned network equipment or chip or system-on-chip (SOC) inside the base station.
  • RSU Road Side Unit
  • SOC system-on-chip
  • the first to fifth communication devices involved in this application may include various devices with wireless communication functions or units, components, devices, chips, or SOCs in the devices.
  • the devices with wireless communication functions may be, for example, Vehicle-mounted equipment, wearable equipment, computing equipment, or other equipment connected to a wireless modem, a mobile station (MS), a terminal, or a user equipment (UE).
  • MS mobile station
  • UE user equipment
  • FIG. 8 is a method for transmitting response information, a first to a fifth communication device, a network device, and a system according to an embodiment of the present application.
  • the first communication device includes a sending unit 21, a processing unit 22, and a receiving unit 23, where the sending unit 21 and the receiving unit 23 may be replaced by a sending and receiving unit.
  • the second communication device includes a sending unit 31, a processing unit 32, and a receiving unit 33, where the sending unit 31 and the receiving unit 33 may be replaced by a transmitting and receiving unit.
  • the third communication device includes a sending unit 41, a processing unit 42, and a receiving unit 43, where the sending unit 41 and the receiving unit 43 may be replaced by a sending and receiving unit.
  • the fourth communication device includes a sending unit 51, a processing unit 52, and a receiving unit 53, where the sending unit 51 and the receiving unit 53 may be replaced by a transmitting and receiving unit.
  • the fifth communication device includes a sending unit 61, a processing unit 62, and a receiving unit 63, wherein the sending unit 61 and the receiving unit 63 may be replaced by a transmitting and receiving unit.
  • the network device includes a sending unit 71, a processing unit 72, and a receiving unit 73. The sending unit 71 and the receiving unit 73 may be replaced by a sending and receiving unit.
  • the processing unit 22 to processing unit 72 may be processors, the sending unit 21 to sending unit 71, and the receiving unit 23 to receiving unit 73. It can be a transceiver, the transmitting unit 21 to the transmitting unit 71 can be a transmitter, and the receiving unit 23 to the receiving unit 73 can be a receiver. This transceiver, transmitter or receiver can be a radio frequency circuit.
  • the storage unit is used to store computer instructions
  • the processor is communicatively connected to the memory, and the processor executes the computer instructions stored in the memory, so that the first to fifth communication devices or network devices execute the implementation of FIG. Example involves the method.
  • the processor may be a general-purpose central processing unit (CPU), a microprocessor, and an application-specific integrated circuit (ASIC).
  • the processing unit 22 to processing unit 72 may be, for example, processors, and the sending unit 21 to sending unit 71 may be output interfaces, pins, or circuits.
  • the receiving unit 23 to the receiving unit 73 may be an input interface, a pin, or a circuit, and the transceiving unit may be, for example, an input / output interface, a pin, or a circuit.
  • the processing unit may execute computer execution instructions stored in the storage unit to cause the chips in the first to fifth communication devices or the network devices to execute the method according to FIG. 8-10.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc.
  • the storage unit may also be a storage unit in the terminal that is located outside the chip, such as a read-only memory (Read Only Memory (ROM) or other types of static storage devices that can store static information and instructions, Random Access Memory (Random Access Memory, RAM), etc.
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the steps of the method for sending and receiving response information according to the embodiment of FIG. 8 include:
  • Step 81 The first communication device acquires a first resource and a second resource.
  • the first communication device and at least one communication device in the group together constitute a first communication device group.
  • the second to fourth communication devices belong to the at least one communication device in the group, and the first to fourth communication devices constitute a first communication device.
  • a communication equipment group whose vehicles form a fleet.
  • the vehicle to which the first communication equipment belongs is the leader of the fleet.
  • the fifth communication equipment in FIG. 8 does not belong to the first communication equipment group, and the vehicle to which the fifth communication equipment belongs is not present. In the above-mentioned fleet, it is referred to as an out-of-group communication device in the embodiment of the present application.
  • the first resource will be used by the first communication device to send first control information and first data to the second to fifth communication devices.
  • the first control information is lateral direct link control information
  • the first data is lateral. Direct link data.
  • the second resource will be used for the second to fourth communication devices to transmit the response information to the first communication device.
  • the second resource may also be used for the second to fourth communication devices to transmit channel state information (Channel State Information, CSI) to the first communication device, and the second resource may also be used for the second to fourth communication devices to send the first to the first communication device.
  • CSI Channel State Information
  • the first communication device group may be independently established by the first communication device.
  • the first communication device establishes the first to fourth communication devices as the first communication device group, and selects one as the first within a preset group identification range.
  • the group ID of the communication device group and sends this group ID to the network device for confirmation.
  • the first communication device group may also be established by a network device.
  • the network device may establish the first to fourth communication devices as a first communication device group and assign a group identifier to the first communication device group. This group identifier may be sent by the network device to the second to fourth communication devices, or may be sent by the first communication device to the second to fourth communication devices.
  • the group identifier may be, for example, a group vehicle network wireless network temporary identifier (Group V2X Radio Network Temporary Identifier, G-V2X-RNTI).
  • G-V2X-RNTI Group V2X Radio Network Temporary Identifier
  • V2X network device scheduling mode communication for example, in mode 3, the specific steps for the first communication device to obtain the first resource and the second resource are shown in FIG. 9.
  • the network device scheduling mode 3 communication is based on V2X communication scheduled by the base station.
  • the resources of the first communication device to send control information and data to other communication devices are allocated by the base station.
  • the sending unit 21 of the first communication device sends a scheduling request (Scheduling Request, SR) to the network device on the third resource, and the network device allocates and sends a scheduling request to different communication device groups in the system.
  • SR scheduling request
  • each communication device group will have a resource corresponding to the scheduling request.
  • the first communication device group has a corresponding relationship with the third resource.
  • the network device may determine, according to the third resource and the correspondence between the third resource and the first communication device group, that the communication device of the first communication device group is requesting transmission of control information, A resource of data and / or response information, and a group identifier of a first communication device group used to scramble the first downlink control information may be obtained by the network device according to the corresponding relationship, and the third resource may belong to physical uplink control Channel (Physical Uplink Control Channel, PUCCH).
  • the scheduling request is used to request the network device to schedule a first resource transmitting the first control information and first data and / or a second resource transmitting the response information.
  • the first communication device may notify the network device whether to allocate a second resource for transmitting response information by sending scheduling requests of different sequences. For example, when the first communication device sends the scheduling request sequence A to the network device, it indicates that the A communication device needs a network device to allocate a second resource for transmitting response information. At this time, the network device schedules a first resource for transmitting the first control information and first data and a second resource for transmitting the response information. First communication When the device sends a scheduling request sequence B to the network device, it indicates that the first communication device does not need the network device to allocate a second resource for transmitting response information, and at this time, the network device will only schedule the first transmission of the first control information and the first data. Resources.
  • the second resource may be included in a Hybrid Automatic Repeat Request Grant (HARQ-Grant) sent by the base station, or may be included in a Channel State Information Grant (CSI-Grant).
  • HARQ-Grant Hybrid Automatic Repeat Request Grant
  • CSI-Grant Channel State Information Grant
  • the sending unit 21 of the first communication device may also send a scheduling request and a buffer status report (Buffer Status Report (BSR)) to the network device, where the buffer status report includes the first communication.
  • BSR Buffer Status Report
  • the first communication device may send the scheduling request and the buffer status report to a network device on a Physical Uplink Shared Channel (PUSCH).
  • PUSCH Physical Uplink Shared Channel
  • the buffer status report may also include 1-bit indication information to indicate whether the network device needs to allocate a second resource for transmitting response information. For example, when the 1-bit indication When the information is 1, the network device will allocate a second resource for transmitting the response information. When the 1-bit instruction information is 0, the network device will not allocate a second resource for transmitting the response information.
  • the buffer status report may be used to request the network device to schedule a second resource for transmitting channel status information, or the buffer status report may be used to request the network device to schedule a transmission of response information and channel status information.
  • Second resource That is, the second resource scheduled by the base station can be used for transmitting response information and channel state information, and can also be used for transmitting response information and channel state information.
  • step 92 the processing unit 72 of the network device allocates the first resource for transmitting the first control information and the first data and the transmission response information in response to the scheduling request or a combination of the scheduling request and the buffer status report sent by the first communication device.
  • Second resource may be used to transmit channel state information, or the second resource may be used to transmit response information and channel state information.
  • Step 93 The sending unit 71 of the network device sends first downlink control information (DCI) to the first communication device to the fourth communication device, and the first downlink control information is used to indicate the first resource. And a second resource, the first downlink control information is scrambled by a group identifier of the first communication device group.
  • the first downlink control information may include side-link resource configuration information, modulation and coding scheme (MCS) used for side-line transmission, side-line feedback resource configuration information, and information for initiating multicast or broadcast data transmission.
  • MCS modulation and coding scheme
  • User-ID user equipment identifier
  • the line feedback resource configuration information is used to indicate a second resource for transmitting response information on the side link
  • the user equipment identifier of the user equipment that initiates multicast or broadcast data transmission is used by the first to fourth communication devices to learn that the side link A communication device that initiates multicast or broadcast data transmission on the road. For example, if the first downlink control information includes the user equipment identifier of the first communication device, the first to fourth communication devices can know that the first communication device is about to perform side information after receiving the first downlink control information.
  • the transmitting communication device, and the second to fourth communication devices are communication devices that are to receive side information.
  • Which communication device in the first communication device group is the communication device that initiates multicast or broadcast data transmission can be set by the network device when the first communication device group is created, or by the communication device that created the first communication device group when creating the first communication device group. Set for a communication device group.
  • Step 94 The first communication device to the fourth communication device acquire the first resource and the second resource.
  • the first downlink control information sent by the network device is scrambled by the group identifier of the first communication device group. Therefore, only the communication devices belonging to the members of the first communication device group can control the scrambled first downlink.
  • the information is descrambled and the first resource and the second resource are obtained, that is, the first to fourth communication devices obtain the first resource and the second resource by descrambling the first downlink control information.
  • the receiving unit 23 of the first communication device receives the first downlink control information scrambled by the group identifier from the network device, and the first communication device will scramble the first downlink control information scrambled by the group identifier according to the group identifier.
  • a downlink control information is descrambled, thereby obtaining the first downlink control information, and acquiring a first resource for transmitting the first control information and the first data, and acquiring a second resource for transmitting the response information.
  • V2X user-selected mode communication for example, in mode 4, the specific steps for the first communication device to obtain the first resource and the second resource are shown in FIG. 4.
  • User-selected mode communication is V2X communication based on the communication device autonomously selecting resources for transmission of control information and data.
  • the first communication device selects the first resource and the second resource in the resource pool, and uses the side link control information to convert the first resource to the first.
  • the first resource and the second resource selected by the communication device inform other communication devices.
  • the processing unit 22 of the first communication device selects the first resource and the second resource in the resource pool.
  • the first communication device selects the side-line control information and the side-line data resource pool
  • the second resource is selected in the response information resource pool.
  • the first communication device may also select the first resource and the second resource in a common resource pool.
  • Step 102 The sending unit 21 of the first communication device sends the resource for sending the first data, the second resource, and the group identifier of the first communication device group to other communication devices on the first resource. Specifically, Step 102 is the same as step 82.
  • Step 82 The sending unit 21 of the first communication device sends the first control information and the first data to at least one communication device in the group on the first resource, and the receiving unit of the at least one communication device in the group sends the first control information and the first data from the first resource.
  • the first communication device receives the first control information and first data.
  • the at least one communication device in the group refers to a plurality of other communication devices belonging to the first communication device group except the first communication device. In FIG. 8, the at least one communication device in the group specifically includes second to Fourth communication equipment.
  • the first communication device and the at least one communication device in the group belong to a first communication device group, and the first communication device and the at least one communication device in the group each have a group identifier of the first communication device group,
  • the first control information is used to indicate, among the first resources, a resource that sends the first data, the second resource, and a group identifier of the first communication device group.
  • the first control information may be Sidelink Control Information (SCI).
  • the sending unit 21 of the first communication device may further send the first control information and the first data on the first resource to at least one out-group communication device, the at least one out-group communication A receiving unit of the device receives the first control information and the first data from the first communication device on the first resource, and the at least one out-of-group communication device does not belong to the first communication device group, None of the at least one third communication device has a group identity of the first communication device group.
  • the at least one out-group communication device refers to a plurality of other communication devices that do not belong to the first communication device group. In FIG. 8, the at least one out-group communication device is a fifth communication device as an example.
  • the first communication device broadcasts the first control information and the first data to other communication devices in its periphery on the first resource, and other communication devices in its periphery include both the first communication and the first communication belonging to the first communication device group.
  • Other communication devices other than the device also include communication devices that do not belong to the first communication device group. Therefore, the communication devices outside the group can also receive the first data from the first communication device according to the first control information, and the reliability of communication devices other than the first communication device group can be improved.
  • the fifth communication device can determine that it is an out-of-group communication device according to the first communication device group identifier, the fifth communication device does not need to feed back response information to the first communication device.
  • the interval between the first resource and the second resource in the time domain may be a predefined time length, for example, the first resource and the second resource are separated by z time slots, micro time slots, subframes, or other time units.
  • the first control information may also be used to indicate that there are k time slots spaced between the first resource and the second resource. If the first resource belongs to time slot n, the second resource belongs to time slot n + k or time. Gap n + k-1, where n is an integer, and k is a positive integer.
  • the k time slots may be indicated by using a reservation field or reservation information in the first control information, and this first control information may further include a 1-bit HARQ reservation indication information for indicating the first Whether the reservation field or the reservation information in the control information is used to indicate a second resource for transmitting HARQ information.
  • Step 83 The sending units from the second communication device to the fourth communication device send response information to the first communication device on the second resource, and the receiving unit 23 of the first communication device sends the response information from the second resource to the first resource.
  • the second communication device to the fourth communication device receive the response information, and the response information is used to feedback whether the second communication device to the fourth communication device correctly receive the first data.
  • the sending units from the second communication device to the fourth communication device may send channel state information to the first communication device on the second resource, or the sending units from the second communication device to the fourth communication device may also The response information and channel state information may be sent to the first communication device on the second resource.
  • the second communication device belongs to at least one communication device in the group, the second communication device is also a communication device belonging to the first communication device group, and the second communication device has a group identifier of the first communication device group.
  • the two communication devices receive the first control information and the first data sent by the first communication device, the second communication device determines the second communication device and the first communication device according to the group identifier of the first communication device group carried in the first control information. If a communication device belongs to the same communication device group, that is, it belongs to the first communication device group, the second communication device feeds back the response information to the first communication device on the second resource.
  • the second communication device when the second communication device is correctly or successfully After receiving the first data, the second communication device sends an ACK response message to the first communication device. When the second communication device does not receive the first data correctly or successfully, the second communication device sends the first communication device to the first communication device. Send a NACK response message.
  • the third communication device and the fourth communication device are also communication devices belonging to the first communication device group. Therefore, the specific steps for the third communication device and the fourth communication device to send the response information are the same as those of the second communication device, and will not be described again.
  • the first communication device may also send a reference signal when sending the first data to the second to fourth communication devices on the first resource, and the determination unit of the second to fourth communication devices may measure the reference signal and generate a channel. status information.
  • the second to fourth communication devices may send channel state information to the first communication device on the second resource, and thus, the first communication device may obtain the channel state of the side link through the received channel state information.
  • the second to fourth communication devices may send channel state information and response information to the first communication device on the second resource, and details are not described herein again.
  • the fifth communication device belongs to at least one communication device outside the group, the fifth communication device is not a communication device belonging to the first communication device group, and the fifth communication device does not have a group identifier of the first communication device group, Therefore, after the fifth communication device receives the first control information and the first data sent by the first communication device, the fifth communication device determines the fifth communication device according to the group identifier of the first communication device group carried in the first control information. It does not belong to the same communication device group as the first communication device, that is, it does not belong to the first communication device group. Therefore, the fifth communication device does not need to feedback to the first communication device after receiving the first data sent by the first communication device. Reply message.
  • the first to fourth communication devices constitute a first communication device group, and the second to fourth communication devices feedback response information after receiving the first data sent by the first communication device.
  • the feedback There are many ways to respond to the feedback:
  • the second resource is divided into several resource units in the frequency domain.
  • each resource unit is a resource block (RB)
  • each RB corresponds to a communication device.
  • the first communication device may The RB position of the received response information determines which communication device sent the response information.
  • the second communication device corresponds to RB0
  • the third communication device corresponds to RB1
  • the fourth communication device corresponds to RB2.
  • the response message received by RB0 is sent by the second communication device, and so on.
  • the first communication device may decide whether to perform multicast retransmission according to the ratio of the number of received ACKs or NACKs to the total number of response information, that is, retransmit the first data to the second to fourth communication devices.
  • the first communication device may also determine to unicast retransmit the first data to the communication device that did not receive the first data correctly or successfully according to the RB position that received the NACK response information.
  • Manner 2 The communication device that receives the first data correctly or successfully sends an ACK response message to the first communication device, and the communication device that does not receive the first data correctly or successfully does not send any response information to the first communication device.
  • the first communication device It does not distinguish which communication device the received ACK response information is sent from, and the first communication device accounts for the ratio of the number of received ACK response information to the number of communication devices in the first communication device group except the first communication device and the preset value.
  • the threshold determines whether to perform multicast retransmission, that is, to retransmit the first data to the second to fourth communication devices.
  • the second and third communication devices receive the first data sent by the first communication device correctly or successfully, the second and third communication devices both send ACK response information to the first communication device on the second resource. If the four communication devices do not correctly or successfully receive the first data sent by the first communication device, the fourth communication device does not feedback any response information to the first communication device. Therefore, the first communication device receives a total of 2 ACK response information. There are three communication devices in the first communication device group except the first communication device. Therefore, the number of ACK response information received by the first communication device accounts for the number of communication devices except the first communication device in the first communication device group. The ratio is 66.7%, and the preset threshold is assumed to be 80%.
  • the first communication device judges that the communication device in the group that correctly received the first data is only 66.7%, which is less than the preset threshold of 80%.
  • the device will retransmit the first data to the second to fourth communication devices.
  • the first communication device may also determine whether to multicast retransmit the first to fourth communication devices according to whether a received signal strength indication (Received Signal Strength Indication (RSSI)) of the received ACK response information is greater than a preset threshold.
  • RSSI Receiveived Signal Strength Indication
  • the RSSI of the ACK response information received by the first communication device is greater than a preset threshold, it indicates that the number of communication devices in the group that received the first data correctly or successfully is larger, and the first communication device judges the second The first to fourth communication devices have received the first data correctly or successfully. Therefore, no multicast retransmission is performed to the second to fourth communication devices. If the RSSI of the ACK response information received by the first communication device is less than a preset The first communication device performs multicast retransmission of the first data to the second to fourth communication devices.
  • Method 3 The communication device that does not receive the first data correctly or successfully sends a NACK response message to the first communication device, and the communication device that correctly or successfully receives the first data does not send any response information to the first communication device.
  • the first communication device It does not distinguish which communication device the received NACK response information is sent from, and the first communication device accounts for the ratio of the number of received NACK response information to the number of communication devices in the first communication device group except the first communication device and the preset value.
  • the threshold determines whether to perform multicast retransmission, that is, to retransmit the first data to the second to fourth communication devices.
  • the second and third communication devices do not correctly or successfully receive the first data sent by the first communication device, then the second and third communication devices both send NACK response information to the first communication device on the second resource,
  • the fourth communication device receives the first data sent by the first communication device correctly or successfully, and the fourth communication device does not feedback any response information to the first communication device. Therefore, the first communication device receives a total of 2 NACK response information.
  • the ratio is 66.7%, and the preset threshold is assumed to be 30%.
  • the first communication device determines that the communication devices in the group that did not receive the first data correctly or successfully receive up to 66.7%, which is greater than the preset threshold of 30%.
  • a communication device will multicast retransmit the first data to the second to fourth communication devices.
  • the first communication device may also determine whether to retransmit the first data to the second to fourth communication devices according to whether the RSSI of the received NACK response information is greater than a preset threshold.
  • the first communication device receives If the RSSI of the NACK response information is greater than a preset threshold, it means that the number of communication devices in the group that did not correctly or successfully receive the first data is large, and the first communication device judges that the second to fourth communication devices are not correctly or successfully The first data is received, so the first communication device will multicast the first data to the second to fourth communication devices, and if the RSSI of the NACK response information received by the first communication device is less than the preset Threshold value of the first communication device, the first communication device will not perform multicast retransmission of the first data to the second to fourth communication devices.
  • a preset threshold it means that the number of communication devices in the group that did not correctly or successfully receive the first data is large, and the first communication device judges that the second to fourth communication devices are not correctly or successfully The first data is received, so the first communication device will multicast the first data to the second to fourth communication devices, and if the RSSI of the NACK response information received by the first communication device is less than the preset Threshold
  • the first communication device acquires the first resource and the second resource, and sends the first control information and the first data to the second communication device on the first resource, and from the second communication device on the second resource. Receiving response information, therefore, improves the reliability of V2X communication.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the above integrated unit may be implemented in the form of hardware or in the form of software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially a part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium , Including a number of instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application.
  • the foregoing storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes .

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Abstract

一种应答信息的发送和接收方法、通信设备及系统，其中发送方法包括：第一通信设备获取第一资源和第二资源；所述第一通信设备在所述第一资源上向至少一个组内通信设备发送第一控制信息和第一数据，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识；所述第一通信设备在所述第二资源上从第二通信设备接收应答信息，所述第二通信设备属于所述至少一个组内通信设备。由此，提高了V2X通信的可靠性。

Description

一种应答信息的发送和接收方法、通信设备及网络设备
本申请要求于2018年06月08日提交中国国家知识产权局、申请号为201810588498.6、申请名称为“一种应答信息的发送和接收方法、通信设备及网络设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请的实施例涉及通信系统，尤其是涉及一种应答信息的发送和接收方法、通信设备及网络设备。
背景技术
设备到设备(Device to Device，D2D)通信、车与车(Vehicle to Vehicle，V2V)通信、车与行人V2P(Vehicle to Pedestrian，V2P)通信或车与基建/网络V2I/N(Vehicle to Infrastructure/Network，V2I/N)通信是终端设备(terminal device)之间直接进行通信的技术，V2V、V2P以及V2I/N统称为V2X，即车与任何事物相通信。
以V2X通信为例，第一终端设备会将自身的一些信息，例如位置、速度、意图等信息周期性地向以组播或广播的方式向多个其它终端设备发送，以提高车辆行驶的安全性。在现有技术中，第一终端设备是无法获知多个其它终端设备是否正确地接收到第一终端设备发送的上述信息，无法满足V2X通信对可靠性的要求。
发明内容
本申请的实施例提供一种应答信息的发送和接收方法、通信设备、网络设备及系统，能够提高V2X通信的可靠性。
第一方面，提供一种应答信息的接收方法，包括：第一通信设备获取第一资源和第二资源；所述第一通信设备在所述第一资源上向至少一个组内通信设备发送第一控制信息和第一数据，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识，所述第一控制信息用于指示所述第一资源中发送所述第一数据的资源、所述第二资源和所述第一通信设备组的组标识；所述第一通信设备在所述第二资源上从第二通信设备接收应答信息，所述应答信息用于反馈所述第二通信设备是否正确接收所述第一数据，所述第二通信设备属于所述至少一个组内通信设备。
通过本申请实施例，第一通信设备获取第一资源和第二资源，并在第一资源上向第二通信设备发送第一控制信息和第一数据，在第二资源上从第二通信设备接收应答信息，因此，提高了V2X通信的可靠性。
在一种可能的设计中，所述第一通信设备从网络设备接收第一下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰；所述第一通信设备获取第一资源和第二资源包括：所述第 一通信设备通过解扰所述第一下行控制信息获取所述第一资源和第二资源。通过对下行控制信息用组标识加扰，只有属于第一通信设备组的通信设备才能够对下行控制信息进行解扰并获得此下行控制信息。
在一种可能的设计中，在所述第一通信设备从网络设备接收所述第一下行控制信息之前，还包括：所述第一通信设备在第三资源上向所述网络设备发送调度请求，所述第三资源与所述第一通信设备组具有对应关系，其中，所述调度请求用于请求所述网络设备调度所述第一资源和所述第二资源；且，用于加扰所述第一下行控制信息的所述第一通信设备组的组标识为所述网络设备根据所述对应关系获得的。
在一种可能的设计中，所述第一通信设备向所述网络设备发送缓冲状态报告和调度请求，所述缓冲状态报告中包含所述第一通信设备所属的第一通信设备组的组标识，所述缓冲状态报告用于请求所述网络设备调度所述第二资源，所述调度请求用于请求所述网络设备调度所述第一资源。
在一种可能的设计中，所述第一通信设备获取第一资源和第二资源包括：所述第一通信设备从资源池中选择所述第一资源和第二资源。
在一种可能的设计中，所述方法还包括：所述第一通信设备在所述第一资源上向至少一个组外通信设备发送所述第一控制信息和所述第一数据，所述至少一个组外通信设备不属于所述第一通信设备组，所述至少一个组外通信设备不具有所述第一通信设备组的组标识。由此，组外通信设备也可以根据第一控制信息从第一通信设备接收第一数据，可以提高除第一通信设备组之外的通信设备的可靠性。
在一种可能的设计中，所述第一控制信息还用于指示所述第一资源与所述第二资源之间间隔k个时隙，所述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。
第二方面，提供一种第一通信设备，包括：处理单元，用于获取第一资源和第二资源；发送单元，用于在所述第一资源上向至少一个组内通信设备发送第一控制信息和第一数据，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识，所述第一控制信息用于指示所述第一资源中发送所述第一数据的资源、所述第二资源和所述第一通信设备组的组标识；接收单元，用于在所述第二资源上从第二通信设备接收应答信息，所述应答信息用于反馈所述第二通信设备是否正确接收所述第一数据，所述第二通信设备属于所述至少一个组内通信设备。
通过本申请实施例，第一通信设备获取第一资源和第二资源，并在第一资源上向第二通信设备发送第一控制信息和第一数据，在第二资源上从第二通信设备接收应答信息，因此，提高了V2X通信的可靠性。
在一种可能的设计中，所述接收单元，还用于从网络设备接收第一下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰；所述处理单元，用于获取第一资源和第二资源包括：所述处理单元通过解扰所述第一下行控制信息获取所述第一资源和第二资源。通过对下行控制信息用组标识加扰，只有属于第一通信设备组的通信设备才能够对下行控制信息进行解扰并获得此下行控制信息。
在一种可能的设计中，在所述接收单元从网络设备接收所述第一下行控制信息之前， 还包括：所述发送单元，用于在第三资源上向所述网络设备发送调度请求，所述第三资源与所述第一通信设备组具有对应关系，其中，所述调度请求用于请求所述网络设备调度所述第一资源和所述第二资源；且，用于加扰所述第一下行控制信息的所述第一通信设备组的组标识为所述网络设备根据所述对应关系获得的。
在一种可能的设计中，所述发送单元，用于向所述网络设备发送缓冲状态报告和调度请求，所述缓冲状态报告中包含所述第一通信设备所属的第一通信设备组的组标识，所述缓冲状态报告用于请求所述网络设备调度所述第二资源，所述调度请求用于请求所述网络设备调度所述第一资源。
在一种可能的设计中，所述处理单元，用于获取第一资源和第二资源包括：所述处理单元从资源池中选择所述第一资源和第二资源。
在一种可能的设计中，所述发送单元，还用于在所述第一资源上向至少一个组外通信设备发送所述第一控制信息和所述第一数据，所述至少一个组外通信设备不属于所述第一通信设备组，所述至少一个组外通信设备不具有所述第一通信设备组的组标识。由此，组外通信设备也可以根据第一控制信息从第一通信设备接收第一数据，可以提高除第一通信设备组之外的通信设备的可靠性。
在一种可能的设计中，所述第一控制信息还用于指示所述第一资源与所述第二资源之间间隔k个时隙，所述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。
第三方面，提供一种应答信息的发送方法，包括：第二通信设备在第一资源上从第一通信设备接收第一控制信息和第一数据，所述第二通信设备属于至少一个组内通信设备，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述第二通信设备均具有所述第一通信设备组的组标识，所述第一控制信息用于指示所述第一资源中发送所述第一数据的资源、第二资源和所述第一通信设备组的组标识；所述第二通信设备在所述第二资源上向所述第一通信设备发送应答信息，所述应答信息用于反馈所述第二通信设备是否正确接收所述第一数据。
通过本申请实施例，第一通信设备获取第一资源和第二资源，并在第一资源上向第二通信设备发送第一控制信息和第一数据，在第二资源上从第二通信设备接收应答信息，因此，提高了V2X通信的可靠性。
在一种可能的设计中，所述方法还包括：所述第二通信设备从网络设备接收第一下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰；所述第二通信设备通过解扰所述第一下行控制信息获取所述第一资源和第二资源。
第四方面，提供一种第二通信设备，包括：接收单元，用于在第一资源上从第一通信设备接收第一控制信息和第一数据，所述第二通信设备属于至少一个组内通信设备，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述第二通信设备均具有所述第一通信设备组的组标识，所述第一控制信息用于指示所述第一资源中发送所述第一数据的资源、第二资源和所述第一通信设备组的组标识；发送单元，用于在所述第二资源上向所述第一通信设备发送应答信息，所述应答信息用于反馈所述第二通信设备是否正确接收所述第一数据。
通过本申请实施例，第一通信设备获取第一资源和第二资源，并在第一资源上向第 二通信设备发送第一控制信息和第一数据，在第二资源上从第二通信设备接收应答信息，因此，提高了V2X通信的可靠性。
在一种可能的设计中，所述接收单元，还用于从网络设备接收第一下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰；所述第二通信设备还包括处理单元，所述处理单元，用于通过解扰所述第一下行控制信息获取所述第一资源和第二资源。
第五方面，提供一种下行控制信息的发送方法，包括：网络设备在第三资源上从第一通信设备接收调度请求，其中，所述第三资源与所述第一通信设备组具有对应关系，所述调度请求用于请求所述网络设备调度传输第一控制信息和第一数据的第一资源和传输应答信息的第二资源，所述第一资源用于所述第一通信设备向至少一个组内通信设备发送所述第一控制信息和第一数据，所述第二资源用于第二通信设备向所述第一通信设备发送应答信息，所述应答信息用于反馈第二通信设备是否正确接收所述第一数据，所述第二通信设备属于所述至少一个组内通信设备，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识；所述网络设备根据所述第三资源和所述对应关系获得所述第一通信设备所属的第一通信设备组的组标识；所述网络设备向所述第一通信设备和所述至少一个组内通信设备发送下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰。
通过本申请实施例，第一通信设备获取第一资源和第二资源，并在第一资源上向第二通信设备发送第一控制信息和第一数据，在第二资源上从第二通信设备接收应答信息，因此，提高了V2X通信的可靠性。
在一种可能的设计中，所述第一控制信息还用于指示所述第一资源与所述第二资源之间间隔k个时隙，所述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。
第六方面，提供一种网络设备，包括：接收单元，用于在第三资源上从第一通信设备接收调度请求，其中，所述第三资源与所述第一通信设备组具有对应关系，所述调度请求用于请求所述网络设备调度传输第一控制信息和第一数据的第一资源和传输应答信息的第二资源，所述第一资源用于所述第一通信设备向至少一个组内通信设备发送所述第一控制信息和第一数据，所述第二资源用于第二通信设备向所述第一通信设备发送应答信息，所述应答信息用于反馈第二通信设备是否正确接收所述第一数据，所述第二通信设备属于所述至少一个组内通信设备，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识；处理单元，用于根据所述第三资源和所述对应关系获得所述第一通信设备所属的第一通信设备组的组标识；发送单元，用于向所述第一通信设备和所述至少一个组内通信设备发送下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰。
通过本申请实施例，第一通信设备获取第一资源和第二资源，并在第一资源上向第二通信设备发送第一控制信息和第一数据，在第二资源上从第二通信设备接收应答信息，因此，提高了V2X通信的可靠性。
在一种可能的设计中，所述第一控制信息还用于指示所述第一资源与所述第二资源 之间间隔k个时隙，所述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。
第七方面，提供一种下行控制信息的发送方法，包括：网络设备从第一通信设备接收缓冲状态报告和调度请求，所述缓冲状态报告中包含所述第一通信设备所属的第一通信设备组的组标识，所述缓冲状态报告用于请求所述网络设备调度传输应答信息的第二资源，所述调度请求用于请求所述网络设备调度传输第一控制信息和第一数据的第一资源，所述第一资源用于所述第一通信设备向至少一个组内通信设备发送所述第一控制信息和第一数据，所述第二资源用于第二通信设备向所述第一通信设备发送应答信息，所述应答信息用于反馈第二通信设备是否正确接收所述第一数据，所述第二通信设备属于所述至少一个组内通信设备，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识；所述网络设备向所述第一通信设备和所述至少一个组内通信设备发送下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰。
通过本申请实施例，第一通信设备获取第一资源和第二资源，并在第一资源上向第二通信设备发送第一控制信息和第一数据，在第二资源上从第二通信设备接收应答信息，因此，提高了V2X通信的可靠性。
在一种可能的设计中，所述第一控制信息还用于指示所述第一资源与所述第二资源之间间隔k个时隙，所述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。
第八方面，提供一种网络设备，包括：接收单元，用于从第一通信设备接收缓冲状态报告和调度请求，所述缓冲状态报告中包含所述第一通信设备所属的第一通信设备组的组标识，所述缓冲状态报告用于请求所述网络设备调度传输应答信息的第二资源，所述调度请求用于请求所述网络设备调度传输第一控制信息和第一数据的第一资源，所述第一资源用于所述第一通信设备向至少一个组内通信设备发送所述第一控制信息和第一数据，所述第二资源用于第二通信设备向所述第一通信设备发送应答信息，所述应答信息用于反馈第二通信设备是否正确接收所述第一数据，所述第二通信设备属于所述至少一个组内通信设备，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识；发送单元，用于向所述第一通信设备和所述至少一个组内通信设备发送下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰。
通过本申请实施例，第一通信设备获取第一资源和第二资源，并在第一资源上向第二通信设备发送第一控制信息和第一数据，在第二资源上从第二通信设备接收应答信息，因此，提高了V2X通信的可靠性。
在一种可能的设计中，所述第一控制信息还用于指示所述第一资源与所述第二资源之间间隔k个时隙，所述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。
第九方面，本申请实施例提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。
第十方面，本申请实施例提供了一种计算机程序产品，该程序产品储存有上述第一通信设备或第二通信设备所用的计算机软件指令，该计算机软件指令包含用于执行上述方面所述方案的程序。
第十一方面，本申请实施例提供了一种芯片，用以执行上述方面所涉及的方法，该芯片可以包含具有存储器、处理器、发送器、接收器和/或收发器功能的部分，此存储器中存储有指令、代码和/或数据，用以执行上述方面所涉及的方法。
第十二方面，本申请实施例提供了一种系统，所述系统包括上述方面的第一通信设备和第二通信设备。
附图说明
图1是根据本申请实施例的系统的示意性架构图。
图2是根据本申请实施例的一种第一通信设备。
图3是根据本申请实施例的一种第二通信设备。
图4是根据本申请实施例的一种第三通信设备。
图5是根据本申请实施例的一种第四通信设备。
图6是根据本申请实施例的一种第五通信设备。
图7是根据本申请实施例的一种网络设备。
图8是根据本申请实施例的一种应答信息传输方法示意图。
图9是根据本申请实施例的一种获取第一资源和第二资源方法示意图。
图10是根据本申请实施例的一种选择第一资源和第二资源方法示意图。
图11是根据本申请实施例的一种应答信息传输资源示意图。
具体实施方式
以组播或广播V2X通信为例，在图1中，第一通信设备向一个或多个其它通信设备发送数据，此数据可以为第一通信设备的位置、速度、意图等信息，其中意图信息可以为转向、并线、掉头、加速、刹车等信息或为音频、视频等信息，其中，多个其它通信设备可以与第一通信设备构成一个通信设备组，例如，在车辆编组行驶(Platooning)的情况下，若干辆车构成一个车队，以车队为单位编组行驶，在图1中，第一通信设备可以为头车，多个其它通信设备例如可以包括第二至第四通信设备，第二至第四通信设备与该第一通信设备同属于一个通信设备组，因此可以称第二至第四通信设备为组内通信设备，第一至第四通信设备组成车队行驶。第二至第四通信设备在接收到所述数据后，如果第二、第三或第四通信设备正确地接收了所述数据，则向第一通信设备发送确认(acknowledgement，ACK)应答信息，此时，第一通信设备将不会再向第二、第三或第四通信设备发送所述数据，如果第二、第三或第四通信设备没有正确地接收所述数据，则向第一通信设备发送否定性确认(negative acknowledgement，NACK)应答信息，此时，第一通信设备会再次将所述数据向第二、第三或第四通信设备发送，则第二、第三或第四通信设备可以再次接收所述数据，提高了组播或广播数据传输的可靠性。当然，多个其它通信设备还可以包括更多的通信设备，这些通信设备并不属于第一至第四通信设备 构成的通信设备组，即这些通信设备为组外通信设备，例如，第五通信设备为组外通信设备，第一通信设备也可以向第五通信设备广播数据。第一通信设备与第二至第四通信设备进行V2X通信的资源在模式3V2X通信中可以由网络设备分配，而在模式4V2X通信中可以由第一通信设备自主选择。
本申请所涉及到的网络设备是一种部署在无线接入网中用以为第一至第五通信设备提供无线通信功能的装置。网络设备可以为基站(Base Station，BS)，例如，宏基站，微基站，中继站或接入点等等，还可以是其它形式的设备，例如路灯、路边单元(Road Side Unit，RSU)。在采用不同的无线接入技术的系统中，具备网络设备功能的设备的名称可能会有所不同，例如，其为第五代5G网络中的网络设备或基站，在长期演进(Long Term Evolution，LTE)网络中，称为演进的节点B(evolved NodeB，简称：eNB或者eNodeB),在第三代3G网络中，称为节点B(Node B)等等，或者V2X通信中的路边单元(Road Side Unit，RSU)，或者为上述网络设备或者基站内部的芯片或者片上系统(System on Chip，SOC)。为方便描述，本申请中，上述为第一至第五通信设备提供无线通信功能的装置统称为网络设备。
本申请所涉及到的第一至第五通信设备可以包括各种具有无线通信功能的设备或者此设备中的单元、部件、装置、芯片或者SOC，所述具有无线通信功能的设备例如可以是，车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它设备，移动台(Mobile station，MS)，终端(terminal)或用户设备(User Equipment，UE)等。
下面结合具体例子，以第一至第五通信设备和网络设备为例，更加详细地描述本申请的实施例。
图8为本申请实施例提供的一种应答信息的传输方法、第一至第五通信设备、网络设备及系统。如图2所示，第一通信设备包括发送单元21、处理单元22以及接收单元23，其中，发送单元21与接收单元23可以由收发单元代替。如图3所示，第二通信设备包括发送单元31、处理单元32以及接收单元33，其中，发送单元31与接收单元33可以由收发单元代替。如图4所示，第三通信设备包括发送单元41、处理单元42以及接收单元43，其中，发送单元41与接收单元43可以由收发单元代替。如图11所示，第四通信设备包括发送单元51、处理单元52以及接收单元53，其中，发送单元51与接收单元53可以由收发单元代替。如图6所示，第五通信设备包括发送单元61、处理单元62以及接收单元63，其中，发送单元61与接收单元63可以由收发单元代替。如图7所示，网络设备包括发送单元71、处理单元72以及接收单元73，发送单元71和接收单元73可以由收发单元代替。
当第一至第五通信设备为终端设备或者用户设备时，当网络设备为基站时，处理单元22至处理单元72可以为处理器，发送单元21至发送单元71、接收单元23至接收单元73可以为收发器，发送单元21至发送单元71可以为发射器，接收单元23至接收单元73可以为接收器，此收发器、发射器或接收器可以为射频电路，当第一至第五通信设备或网络设备包含存储单元时，该存储单元用于存储计算机指令，该处理器与存储器通信连接，处理器执行存储器存储的计算机指令，使第一至第五通信设备或网络设备执行图2实施例涉及的方法。其中，处理器可以是一个通用中央处理器(CPU)，微处理器，特定应用集成电路(Application Specific Intergrated Circuit，ASIC)。
当第一至第五通信设备或网络设备为芯片时，所述处理单元22至处理单元72例如 可以是处理器，发送单元21至发送单元71可以是输出接口、管脚或电路等，接收单元23至接收单元73可以是输入接口、管脚或电路等，所述收发单元例如可以是输入/输出接口、管脚或电路等。该处理单元可执行存储单元存储的计算机执行指令，以使该第一至第五通信设备内或网络设备内的芯片执行图8-10所涉及的方法。可选地，所述存储单元为所述芯片内的存储单元，如寄存器、缓存等，所述存储单元还可以是所述终端内的位于所述芯片外部的存储单元，如只读存储器(Read Only Memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(Random Access Memory，RAM)等。
图8实施例所涉及的应答信息的发送和接收方法的步骤包括：
步骤81，第一通信设备获取第一资源和第二资源。第一通信设备与至少一个组内通信设备共同构成第一通信设备组，例如在图8中，第二至第四通信设备属于上述至少一个组内通信设备，第一至第四通信设备构成第一通信设备组，其所属的车辆组成一个车队，其中第一通信设备所属车辆是车队的头车，图8中的第五通信设备不属于第一通信设备组，第五通信设备所属车辆并不在上述车队内，在本申请实施例中称其为组外通信设备。第一资源将会用于第一通信设备向第二至第五通信设备发送第一控制信息和第一数据，此第一控制信息为侧行直连链路控制信息，此第一数据为侧行直连链路数据。第二资源将会用于第二至第四通信设备向第一通信设备传输应答信息。当然，第二资源还可以用于第二至第四通信设备向第一通信设备传输信道状态信息(Channel State Information，CSI)，第二资源也可以用于第二至第四通信设备向第一通信设备传输应答信息和CSI。
第一通信设备组可以由第一通信设备自主建立，例如，第一通信设备将第一至第四通信设备建立为第一通信设备组，并在预设的组标识范围内选择一个作为第一通信设备组的组标识，并将此组标识发送给网络设备确认。第一通信设备组还可以由网络设备建立，例如网络设备可以将第一至第四通信设备建立为第一通信设备组，并给第一通信设备组分配组标识。此组标识可以由网络设备发送给第二至第四通信设备，也可以由第一通信设备发送给第二至第四通信设备。组标识例如可以为组车联网无线网络临时标识(Group V2X Radio Network Temporary Identifier，G-V2X-RNTI)。当通信设备组建立后，组内的所有通信设备均具备此通信设备组的组标识。
在V2X的网络设备调度模式通信中，例如模式3中，第一通信设备获取第一资源和第二资源的具体步骤如图9所示。网络设备调度模式3通信是基于基站调度的V2X通信，第一通信设备向其它通信设备发送控制信息和数据的资源都是由基站分配的。
在图9的步骤91中，第一通信设备的发送单元21会在第三资源上向网络设备发送调度请求(Scheduling Request，SR)，网络设备会对系统中不同的通信设备组分配发送调度请求的资源，每个通信设备组会有一个发送调度请求的资源与其对应，例如，第一通信设备组与第三资源具有对应关系，当网络设备的接收单元73在第三资源上从属于第一通信设备组的第一通信设备接收到调度请求时，网络设备可以根据第三资源和第三资源与第一通信设备组的对应关系确定是第一通信设备组的通信设备在请求传输控制信息、数据和/或应答信息的资源，用于加扰第一下行控制信息的第一通信设备组的组标识可以由所述网络设备根据所述对应关系获得，此第三资源可以属于物理上行控制信道(Physical Uplink Control Channel，PUCCH)。所述调度请求用于请求所述网络设备调度 传输所述第一控制信息和第一数据的第一资源和/或传输所述应答信息的第二资源。可选的，第一通信设备可以通过发送不同序列的调度请求来通知网络设备是否需要分配传输应答信息的第二资源，例如，第一通信设备向网路设备发送调度请求序列A时，表明第一通信设备需要网络设备分配传输应答信息的第二资源，则此时，网络设备会调度传输第一控制信息和第一数据的第一资源和传输所述应答信息的第二资源；第一通信设备向网络设备发送调度请求序列B时，表明第一通信设备不需要网络设备分配传输应答信息的第二资源，则此时，网络设备只会调度传输第一控制信息和第一数据的第一资源。第二资源可以包含在基站发送的混合自动重传请求授权(Hybrid Automatic Repeat request Grant，HARQ-Grant)中，也可以包含在信道状态信息授权(Channel State Information Grant，CSI-Grant)中。
在图9的步骤91中，第一通信设备的发送单元21也可以向网络设备发送调度请求和缓冲状态报告(Buffer Status Report，BSR)，其中，所述缓冲状态报告中包含所述第一通信设备所属的第一通信设备组的组标识，所述缓冲状态报告用于请求所述网络设备调度传输所述应答信息的第二资源，所述调度请求用于请求所述网络设备调度传输所述第一控制信息和第一数据的第一资源。第一通信设备可以在物理上行共享信道(Physical Uplink Shared Channel，PUSCH)上向网络设备发送所述调度请求和缓冲状态报告。此缓冲状态报告除包含所述第一通信设备组的组标识外，还可以包含1比特的指示信息用于指示网络设备是否需要分配传输应答信息的第二资源，例如，当此1比特的指示信息为1时，网络设备会分配传输应答信息的第二资源，当此1比特的指示信息为0时，网络设备不会分配传输应答信息的第二资源。可选的，所述缓冲状态报告可以用于请求所述网络设备调度传输信道状态信息的第二资源，或所述缓冲状态报告可以用于请求所述网络设备调度传输应答信息和信道状态信息的第二资源。即基站调度的第二资源既可以用于传输应答信息，又可以用于传输信道状态信息，还可以用于传输应答信息和信道状态信息。
步骤92，网络设备的处理单元72响应于第一通信设备发送的调度请求或调度请求与缓冲状态报告的组合而分配用于传输第一控制信息和第一数据的第一资源以及传输应答信息的第二资源。可选的，此第二资源可以用于传输信道状态信息，或此第二资源可以用于传输应答信息和信道状态信息。
步骤93，网络设备的发送单元71向第一通信设备至第四通信设备发送第一下行控制信息(Downlink Control Information，DCI)，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰。第一下行控制信息可以包含侧行链路资源配置信息、侧行传输所采用的调制与编码方式(Modulation and Coding Scheme，MCS)、侧行反馈资源配置信息以及发起组播或广播数据发送的用户设备的用户设备标识(User Equipment Identifier，UE-ID)中的至少一种信息，其中，侧行链路资源配置信息用于指示侧行控制信息和侧行数据传输所用的第一资源，侧行反馈资源配置信息用以指示侧行链路上传输应答信息的第二资源，发起组播或广播数据发送的用户设备的用户设备标识用于第一至第四通信设备获知将要在侧行链路上发起组播或广播数据发送的通信设备。例如，第一下行控制信息中包含第一通信设备的用户设备标识，则第一至第四通信设备在收到第一下行控制信息后便可获知第一通信设备是将要进行侧行信息发送的通信设备，而第二至第四通信设备则为将要进行侧行 信息接收的通信设备。对于第一通信设备组内哪一个通信设备是发起组播或广播数据发送的通信设备可以由网络设备在创建第一通信设备组时设置，或者由创建第一通信设备组的通信设备在创建第一通信设备组时设置。
步骤94，第一通信设备至第四通信设备获取第一资源和第二资源。网络设备发送的第一下行控制信息是由第一通信设备组的组标识加扰的，因此，只有属于第一通信设备组的成员的通信设备才能够对加扰后的第一下行控制信息进行解扰并获取第一资源和第二资源，即第一至第四通信设备通过解扰所述第一下行控制信息获取第一资源和第二资源。例如，第一通信设备的接收单元23从网络设备接收由所述组标识加扰的第一下行控制信息，第一通信设备会根据所述组标识对由所述组标识加扰后的第一下行控制信息进行解扰，由此获取到第一下行控制信息，并获取传输第一控制信息和第一数据的第一资源，以及获取传输应答信息的第二资源。
在V2X的用户自选模式通信中，例如模式4中，第一通信设备获取第一资源和第二资源的具体步骤如图4所示。用户自选模式通信是基于通信设备自主选取传输控制信息和数据的资源的V2X通信，第一通信设备会在资源池中选取第一资源和第二资源，并通过侧行链路控制信息将第一通信设备选取的第一资源和第二资源告知其它的通信设备。
在图10的步骤101中，第一通信设备的处理单元22在资源池中选择第一资源和第二资源，可选的，第一通信设备在侧行控制信息和侧行数据资源池中选择所述第一资源，在应答信息资源池中选择所述第二资源，当然，第一通信设备也可以在一个通用的资源池中选择第一资源和第二资源。
步骤102，第一通信设备的发送单元21在第一资源上将发送所述第一数据的资源、所述第二资源和所述第一通信设备组的组标识发送给其它通信设备，具体的，步骤102与步骤82相同。
步骤82，第一通信设备的发送单元21在第一资源上向至少一个组内通信设备发送第一控制信息和第一数据，所述至少一个组内通信设备的接收单元在第一资源上从所述第一通信设备接收所述第一控制信息和第一数据。所述至少一个组内通信设备是指属于第一通信设备组内的除第一通信设备之外的多个其它通信设备，在图8中，所述至少一个组内通信设备具体包括第二至第四通信设备。所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识，所述第一控制信息用于指示所述第一资源中发送所述第一数据的资源、所述第二资源和所述第一通信设备组的组标识。第一控制信息可以为侧行控制信息(Sidelink Control Information，SCI)。
在步骤82中，第一通信设备的发送单元21还可以在所述第一资源上向至少一个组外通信设备发送所述第一控制信息和所述第一数据，所述至少一个组外通信设备的接收单元在所述第一资源上从所述第一通信设备接收所述第一控制信息和所述第一数据，所述至少一个组外通信设备不属于所述第一通信设备组，所述至少一个第三通信设备均不具有所述第一通信设备组的组标识。所述至少一个组外通信设备是指不属于第一通信设备组的多个其它通信设备，在图8中，以所述至少一个组外通信设备为第五通信设备为例。即，第一通信设备是在第一资源上向其周边的其它通信设备广播所述第一控制信息和第一数据，其周边的其它通信设备既包括属于第一通信设备组的除第一通信设备外的其它通信设备，也包括不属于第一通信设备组的通信设备。由此，组外通信设备也可以 根据第一控制信息从第一通信设备接收第一数据，可以提高除第一通信设备组之外的通信设备的可靠性。但是，由于第五通信设备可以根据第一通信设备组标识确定是组外通信设备，因此，第五通信设备不需要向第一通信设备反馈应答信息。
第一资源与第二资源之间在时域上的间隔可以为预定义的时间长度，例如，第一资源与第二资源间隔z个时隙、微时隙、子帧或其它时间单元。第一控制信息还可以用于指示第一资源与所述第二资源之间间隔k个时隙，所述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。优选的，可以利用第一控制信息中的预约字段或预约信息来指示所述k个时隙，此第一控制信息中还可以包含1个比特的HARQ预约指示信息，用于指示所述第一控制信息中的预约字段或预约信息是否用来指示传输HARQ信息的第二资源。
步骤83，第二通信设备至第四通信设备的发送单元在所述第二资源上向所述第一通信设备发送应答信息，第一通信设备的接收单元23在所述第二资源上从所述第二通信设备至第四通信设备接收所述应答信息，所述应答信息用于反馈所述第二通信设备至第四通信设备是否正确接收所述第一数据。可选的，第二通信设备至第四通信设备的发送单元可以在所述第二资源上向所述第一通信设备发送信道状态信息，或第二通信设备至第四通信设备的发送单元也可以在所述第二资源上向所述第一通信设备发送应答信息和信道状态信息。
以第二通信设备为例，第二通信设备属于至少一个组内通信设备，第二通信设备也是属于第一通信设备组的通信设备，第二通信设备具有第一通信设备组的组标识，第二通信设备接收到第一通信设备发送的第一控制信息和第一数据后，第二通信设备会根据第一控制信息中携带的第一通信设备组的组标识来确定第二通信设备与第一通信设备是属于同一个通信设备组，即属于第一通信设备组，则第二通信设备会在第二资源上向第一通信设备反馈应答信息，例如，当第二通信设备正确或成功地接收了所述第一数据，则第二通信设备向第一通信设备发送ACK应答信息，当第二通信设备没有正确或成功地接收所述第一数据，则第二通信设备向第一通信设备发送NACK应答信息。第三通信设备和第四通信设备也是属于第一通信设备组的通信设备，因此，第三通信设备和第四通信设备发送应答信息的具体步骤与第二通信设备相同，不再赘述。
第一通信设备还可以在第一资源上向第二至第四通信设备发送第一数据时同时发送参考信号，而第二至第四通信设备的确定单元可以对此参考信号进行测量并生成信道状态信息。此时，第二至第四通信设备可以在第二资源上向第一通信设备发送信道状态信息，由此，第一通信设备可以通过接收到的信道状态信息获取侧行链路的信道状态。第二至第四通信设备可以在第二资源上向第一通信设备发送信道状态信息和应答信息，此处不再赘述。
以第五通信设备为例，第五通信设备属于至少一个组外通信设备，第五通信设备不是属于第一通信设备组的通信设备，第五通信设备不具有第一通信设备组的组标识，因此，第五通信设备接收到第一通信设备发送的第一控制信息和第一数据后，第五通信设备根据第一控制信息中携带的第一通信设备组的组标识来确定第五通信设备与第一通信设备不属于同一个通信设备组，即不属于第一通信设备组，因此，第五通信设备在接收到第一通信设备发送的第一数据后，不需要向第一通信设备反馈应答信息。
以图8实施例的组播反馈为例，第一至第四通信设备构成第一通信设备组，第二至 第四通信设备在接收第一通信设备发送的第一数据后会反馈应答信息，应答信息的反馈可以有多种方式：
方式一，第二资源在频域上分为若干个资源单元，例如每个资源单元为1个资源块(Resource Block，RB)，则每个RB都对应一个通信设备，第一通信设备可以根据接收的应答信息的RB位置确定是哪个通信设备发送的应答信息，例如图11所示，第二通信设备对应RB0，第三通信设备对应RB1，第四通信设备对应RB2，则第一通信设备在RB0接收到的应答信息是由第二通信设备发送的，以此类推。此时，第一通信设备可以根据收到的ACK或NACK的数量占应答信息的总数量的比例来决定是否进行组播重传，即向第二至第四通信设备重新发送第一数据。第一通信设备也可以根据接收到NACK应答信息的RB位置来确定向没有正确或成功接收第一数据的通信设备进行单播重传所述第一数据。
方式二，正确或成功接收第一数据的通信设备向第一通信设备发送ACK应答信息，而没有正确或成功接收第一数据的通信设备不向第一通信设备发送任何应答信息，第一通信设备不区分接收到的ACK应答信息是哪个通信设备发送的，第一通信设备根据接收到的ACK应答信息的数量占第一通信设备组内除第一通信设备外的通信设备数量的比值与预设的阈值确定是否进行组播重传，即向第二至第四通信设备组播重传所述第一数据。例如，第二和第三通信设备正确或成功地接收了第一通信设备发送的第一数据，则第二和第三通信设备均在第二资源上向第一通信设备发送ACK应答信息，第四通信设备没有正确或成功地接收第一通信设备发送的第一数据，则第四通信设备不会向第一通信设备反馈任何应答信息，因此，第一通信设备共接收到2个ACK应答信息，第一通信设备组中除第一通信设备外共有3个通信设备，因此，第一通信设备接收到的ACK应答信息的数量占第一通信设备组内除第一通信设备外的通信设备数量的比值为66.7％，预设的阈值假设为80％，因此，第一通信设备判断正确接收到第一数据的组内通信设备仅为66.7％，小于预设的阈值80％，则第一通信设备会向第二至第四通信设备组播重传所述第一数据。第一通信设备也可以根据接收到的ACK应答信息的接收信号强度指示(Received Signal Strength Indication，RSSI)是否大于预设的阈值来决定是否向第二至第四通信设备组播重传所述第一数据，例如，第一通信设备接收到的ACK应答信息的RSSI大于预设的阈值，则说明正确或成功接收到第一数据的组内通信设备数量比较多，则第一通信设备判断第二至第四通信设备正确或成功地接收到了所述第一数据，因此，不向第二至第四通信设备进行组播重传，如果第一通信设备接收到的ACK应答信息的RSSI小于预设的阈值，则第一通信设备会向第二至第四通信设备进行组播重传所述第一数据。
方式三，没有正确或成功接收第一数据的通信设备向第一通信设备发送NACK应答信息，而正确或成功接收第一数据的通信设备不向第一通信设备发送任何应答信息，第一通信设备不区分接收到的NACK应答信息是哪个通信设备发送的，第一通信设备根据接收到的NACK应答信息的数量占第一通信设备组内除第一通信设备外的通信设备数量的比值与预设的阈值确定是否进行组播重传，即向第二至第四通信设备组播重传所述第一数据。例如，第二和第三通信设备没有正确或成功地接收了第一通信设备发送的第一数据，则第二和第三通信设备均在第二资源上向第一通信设备发送NACK应答信息，第四通信设备正确或成功地接收第一通信设备发送的第一数据，则第四通信设备不会向第一通信设备反馈任何应答信息，因此，第一通信设备共接收到2个NACK应答信息，第 一通信设备组中除第一通信设备外共有3个通信设备，因此，第一通信设备接收到的NACK应答信息的数量占第一通信设备组内除第一通信设备外的通信设备数量的比值为66.7％，预设的阈值假设为30％，因此，第一通信设备判断没有正确或成功接收到第一数据的组内通信设备高达66.7％，大于预设的阈值30％，则第一通信设备会向第二至第四通信设备组播重传所述第一数据。第一通信设备也可以根据接收到的NACK应答信息的RSSI是否大于预设的阈值来决定是否向第二至第四通信设备组播重传所述第一数据，例如，第一通信设备接收到的NACK应答信息的RSSI大于预设的阈值，则说明没有正确或成功接收到第一数据的组内通信设备数量比较多，则第一通信设备判断第二至第四通信设备没有正确或成功地接收到了所述第一数据，因此，第一通信设备会向第二至第四通信设备进行组播重传所述第一数据，如果第一通信设备接收到的NACK应答信息的RSSI小于预设的阈值，则第一通信设备不会向第二至第四通信设备进行组播重传所述第一数据。
通过本申请实施例，第一通信设备获取第一资源和第二资源，并在第一资源上向第二通信设备发送第一控制信息和第一数据，在第二资源上从第二通信设备接收应答信息，因此，提高了V2X通信的可靠性。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (27)

  1. 一种应答信息的接收方法，其特征在于，包括：
    第一通信设备获取第一资源和第二资源；
    所述第一通信设备在所述第一资源上向至少一个组内通信设备发送第一控制信息和第一数据，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识，所述第一控制信息用于指示所述第一资源中发送所述第一数据的资源、所述第二资源和所述第一通信设备组的组标识；
    所述第一通信设备在所述第二资源上从第二通信设备接收应答信息，所述应答信息用于反馈所述第二通信设备是否正确接收所述第一数据，所述第二通信设备属于所述至少一个组内通信设备。
  2. 根据权利要求1所述的方法，其特征在于，还包括：
    所述第一通信设备从网络设备接收第一下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰；
    所述第一通信设备获取第一资源和第二资源包括：
    所述第一通信设备通过解扰所述第一下行控制信息获取所述第一资源和第二资源。
  3. 根据权利要求2所述的方法，其特征在于，在所述第一通信设备从网络设备接收所述第一下行控制信息之前，还包括：
    所述第一通信设备在第三资源上向所述网络设备发送调度请求，所述第三资源与所述第一通信设备组具有对应关系，其中，所述调度请求用于请求所述网络设备调度所述第一资源和所述第二资源；
    且，用于加扰所述第一下行控制信息的所述第一通信设备组的组标识为所述网络设备根据所述对应关系获得的。
  4. 根据权利要求2所述的方法，其特征在于，
    所述第一通信设备向所述网络设备发送缓冲状态报告和调度请求，所述缓冲状态报告中包含所述第一通信设备所属的第一通信设备组的组标识，所述缓冲状态报告用于请求所述网络设备调度所述第二资源，所述调度请求用于请求所述网络设备调度所述第一资源。
  5. 根据权利要求1所述的方法，其特征在于，
    所述第一通信设备获取第一资源和第二资源包括：
    所述第一通信设备从资源池中选择所述第一资源和第二资源。
  6. 根据权利要求1-5任意一项所述的方法，其特征在于，所述方法还包括：
    所述第一通信设备在所述第一资源上向至少一个组外通信设备发送所述第一控制信息和所述第一数据，所述至少一个组外通信设备不属于所述第一通信设备组，所述至少一个组外通信设备不具有所述第一通信设备组的组标识。
  7. 根据权利要求1-6任意一项所述的方法，其特征在于，
    所述第一控制信息还用于指示所述第一资源与所述第二资源之间间隔k个时隙，所 述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。
  8. 一种第一通信设备，其特征在于，包括：
    处理单元，用于获取第一资源和第二资源；
    发送单元，用于在所述第一资源上向至少一个组内通信设备发送第一控制信息和第一数据，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识，所述第一控制信息用于指示所述第一资源中发送所述第一数据的资源、所述第二资源和所述第一通信设备组的组标识；
    接收单元，用于在所述第二资源上从第二通信设备接收应答信息，所述应答信息用于反馈所述第二通信设备是否正确接收所述第一数据，所述第二通信设备属于所述至少一个组内通信设备。
  9. 根据权利要求8所述的第一通信设备，其特征在于，
    所述接收单元，还用于从网络设备接收第一下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰；
    所述处理单元，用于获取第一资源和第二资源包括：
    所述处理单元通过解扰所述第一下行控制信息获取所述第一资源和第二资源。
  10. 根据权利要求9所述的第一通信设备，其特征在于，在所述接收单元从网络设备接收所述第一下行控制信息之前，还包括：
    所述发送单元，用于在第三资源上向所述网络设备发送调度请求，所述第三资源与所述第一通信设备组具有对应关系，其中，所述调度请求用于请求所述网络设备调度所述第一资源和所述第二资源；且，用于加扰所述第一下行控制信息的所述第一通信设备组的组标识为所述网络设备根据所述对应关系获得的。
  11. 根据权利要求9所述的第一通信设备，其特征在于，
    所述发送单元，用于向所述网络设备发送缓冲状态报告和调度请求，所述缓冲状态报告中包含所述第一通信设备所属的第一通信设备组的组标识，所述缓冲状态报告用于请求所述网络设备调度所述第二资源，所述调度请求用于请求所述网络设备调度所述第一资源。
  12. 根据权利要求8所述的第一通信设备，其特征在于，
    所述处理单元，用于获取第一资源和第二资源包括：
    所述处理单元从资源池中选择所述第一资源和第二资源。
  13. 根据权利要求8-12任意一项所述的第一通信设备，其特征在于，
    所述发送单元，还用于在所述第一资源上向至少一个组外通信设备发送所述第一控制信息和所述第一数据，所述至少一个组外通信设备不属于所述第一通信设备组，所述至少一个组外通信设备不具有所述第一通信设备组的组标识。
  14. 根据权利要求8-13任意一项所述的第一通信设备，其特征在于，
    所述第一控制信息还用于指示所述第一资源与所述第二资源之间间隔k个时隙，所述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。
  15. 一种应答信息的发送方法，其特征在于，包括：
    第二通信设备在第一资源上从第一通信设备接收第一控制信息和第一数据，所述第二通信设备属于至少一个组内通信设备，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述第二通信设备均具有所述第一通信设备组的组标识，所述第一控制信息用于指示所述第一资源中发送所述第一数据的资源、第二资源和所述第一通信设备组的组标识；
    所述第二通信设备在所述第二资源上向所述第一通信设备发送应答信息，所述应答信息用于反馈所述第二通信设备是否正确接收所述第一数据。
  16. 根据权利要求15所述的方法，其特征在于，所述方法还包括：
    所述第二通信设备从网络设备接收第一下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰；
    所述第二通信设备通过解扰所述第一下行控制信息获取所述第一资源和第二资源。
  17. 一种第二通信设备，其特征在于，包括：
    接收单元，用于在第一资源上从第一通信设备接收第一控制信息和第一数据，所述第二通信设备属于至少一个组内通信设备，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述第二通信设备均具有所述第一通信设备组的组标识，所述第一控制信息用于指示所述第一资源中发送所述第一数据的资源、第二资源和所述第一通信设备组的组标识；
    发送单元，用于在所述第二资源上向所述第一通信设备发送应答信息，所述应答信息用于反馈所述第二通信设备是否正确接收所述第一数据。
  18. 根据权利要求17所述的第二通信设备，其特征在于，
    所述接收单元，还用于从网络设备接收第一下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰；
    所述第二通信设备还包括处理单元，
    所述处理单元，用于通过解扰所述第一下行控制信息获取所述第一资源和第二资源。
  19. 一种下行控制信息的发送方法，其特征在于，包括：
    网络设备在第三资源上从第一通信设备接收调度请求，其中，所述第三资源与所述第一通信设备组具有对应关系，所述调度请求用于请求所述网络设备调度传输第一控制信息和第一数据的第一资源和传输应答信息的第二资源，所述第一资源用于所述第一通信设备向至少一个组内通信设备发送所述第一控制信息和第一数据，所述第二资源用于第二通信设备向所述第一通信设备发送应答信息，所述应答信息用于反馈第二通信设备是否正确接收所述第一数据，所述第二通信设备属于所述至少一个组内通信设备，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识；
    所述网络设备根据所述第三资源和所述对应关系获得所述第一通信设备所属的第一通信设备组的组标识；
    所述网络设备向所述第一通信设备和所述至少一个组内通信设备发送下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息 由所述第一通信设备组的组标识加扰。
  20. 根据权利要求19所述的方法，其特征在于，
    所述第一控制信息还用于指示所述第一资源与所述第二资源之间间隔k个时隙，所述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。
  21. 一种网络设备，其特征在于，包括：
    接收单元，用于在第三资源上从第一通信设备接收调度请求，其中，所述第三资源与所述第一通信设备组具有对应关系，所述调度请求用于请求所述网络设备调度传输第一控制信息和第一数据的第一资源和传输应答信息的第二资源，所述第一资源用于所述第一通信设备向至少一个组内通信设备发送所述第一控制信息和第一数据，所述第二资源用于第二通信设备向所述第一通信设备发送应答信息，所述应答信息用于反馈第二通信设备是否正确接收所述第一数据，所述第二通信设备属于所述至少一个组内通信设备，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识；
    处理单元，用于根据所述第三资源和所述对应关系获得所述第一通信设备所属的第一通信设备组的组标识；
    发送单元，用于向所述第一通信设备和所述至少一个组内通信设备发送下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰。
  22. 根据权利要求21所述的网络设备，其特征在于，
    所述第一控制信息还用于指示所述第一资源与所述第二资源之间间隔k个时隙，所述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。
  23. 一种下行控制信息的发送方法，其特征在于，包括：
    网络设备从第一通信设备接收缓冲状态报告和调度请求，所述缓冲状态报告中包含所述第一通信设备所属的第一通信设备组的组标识，所述缓冲状态报告用于请求所述网络设备调度传输应答信息的第二资源，所述调度请求用于请求所述网络设备调度传输第一控制信息和第一数据的第一资源，所述第一资源用于所述第一通信设备向至少一个组内通信设备发送所述第一控制信息和第一数据，所述第二资源用于第二通信设备向所述第一通信设备发送应答信息，所述应答信息用于反馈第二通信设备是否正确接收所述第一数据，所述第二通信设备属于所述至少一个组内通信设备，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识；
    所述网络设备向所述第一通信设备和所述至少一个组内通信设备发送下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰。
  24. 根据权利要求23所述的方法，其特征在于，
    所述第一控制信息还用于指示所述第一资源与所述第二资源之间间隔k个时隙，所述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。
  25. 一种网络设备，其特征在于，包括：
    接收单元，用于从第一通信设备接收缓冲状态报告和调度请求，所述缓冲状态报告中包含所述第一通信设备所属的第一通信设备组的组标识，所述缓冲状态报告用于请求所述网络设备调度传输应答信息的第二资源，所述调度请求用于请求所述网络设备调度传输第一控制信息和第一数据的第一资源，所述第一资源用于所述第一通信设备向至少一个组内通信设备发送所述第一控制信息和第一数据，所述第二资源用于第二通信设备向所述第一通信设备发送应答信息，所述应答信息用于反馈第二通信设备是否正确接收所述第一数据，所述第二通信设备属于所述至少一个组内通信设备，所述第一通信设备与所述至少一个组内通信设备属于第一通信设备组，所述第一通信设备与所述至少一个组内通信设备均具有所述第一通信设备组的组标识；
    发送单元，用于向所述第一通信设备和所述至少一个组内通信设备发送下行控制信息，所述第一下行控制信息用于指示所述第一资源和第二资源，所述第一下行控制信息由所述第一通信设备组的组标识加扰。
  26. 根据权利要求25所述的网络设备，其特征在于，
    所述第一控制信息还用于指示所述第一资源与所述第二资源之间间隔k个时隙，所述第一资源属于时隙n，则所述第二资源属于时隙n+k或时隙n+k-1，所述n为整数，所述k为正整数。
  27. 一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如权利要求1-7、15-16、19-20或23-24任意一项所述的方法。
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