WO2021013141A1 - 协作传输方法、装置及设备 - Google Patents

协作传输方法、装置及设备 Download PDF

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Publication number
WO2021013141A1
WO2021013141A1 PCT/CN2020/103173 CN2020103173W WO2021013141A1 WO 2021013141 A1 WO2021013141 A1 WO 2021013141A1 CN 2020103173 W CN2020103173 W CN 2020103173W WO 2021013141 A1 WO2021013141 A1 WO 2021013141A1
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Prior art keywords
terminal
control information
target
identifier
target terminal
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PCT/CN2020/103173
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English (en)
French (fr)
Inventor
向铮铮
张鹏
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华为技术有限公司
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Publication of WO2021013141A1 publication Critical patent/WO2021013141A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • 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
    • 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
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a method, device, and device for cooperative transmission.
  • User collaboration scenarios include: network equipment, collaboration terminals and target terminals. Among them, the cooperative terminal is used to provide cooperative transmission for the target terminal.
  • the data transmission of the user collaboration scene mainly includes two stages.
  • the network device sends data to the cooperative terminal and the target terminal.
  • the cooperative terminal forwards the received data to the target terminal.
  • the target terminal can combine the data received from the network device in the first stage and the data received from the cooperating terminal in the second stage for decoding, thereby improving reception performance.
  • the collaborative terminal In transmission based on user cooperation, when the collaborative terminal receives data sent by the network device, the collaborative terminal cannot recognize whether the data is data that needs to be forwarded based on user collaboration.
  • the embodiments of the present application provide a cooperative transmission method, device, and equipment, so that when a cooperative terminal receives data sent by a network device, it can identify whether it is data that needs to be forwarded based on user cooperation.
  • an embodiment of the present application provides a cooperative transmission method, including:
  • the network device generates the identification of the cooperation group corresponding to the target data and the identification of the target terminal, where the target data is data to be transmitted by the network device to the target terminal; the network device sends first control information to at least one terminal, The first control information is used to indicate the identity of the cooperation group corresponding to the target data and the identity of the target terminal, the at least one terminal includes at least one cooperation terminal and/or at least one target terminal; the network device according to the The first control information sends the target data to the at least one terminal.
  • the network device generates the identification of the cooperation group corresponding to the target data and the identification of the target terminal, and indicates the identification of the cooperation group corresponding to the target data and the identification of the target terminal in the first control information, so that the cooperative terminal receives the first
  • it can be determined according to the first control information whether the target data is data based on cooperative transmission, and whether the data needs to be forwarded to which terminal; after receiving the first control information, the target terminal can control according to the first control information.
  • the information determines whether the target data is based on cooperative transmission, and knows that it may receive data forwarded by the cooperative terminal later.
  • the first control information includes first scheduling control information corresponding to the target data, and first cyclic redundancy check CRC bits corresponding to the first scheduling control information;
  • the identification of the cooperation group and the identification of the target terminal are carried in the first CRC bit and/or the first scheduling control information.
  • the identification of the target terminal of the identification of the cooperation group in the first CRC bits and/or the first scheduling control information, it is possible to indicate without increasing the number of DCI bits or only a small number of bits.
  • the identification of the target terminal and the identification of the cooperation group ensure the effectiveness of cooperative transmission and improve the utilization of resources.
  • the first part of the first CRC bit is scrambled with the identity of the cooperation group, and the second part of the first CRC bit is the identity of the target terminal Perform scrambling.
  • At least part of the bits of the first CRC bit is scrambled with the identification of the cooperation group, and the identification of the target terminal is carried in the first scheduling control information.
  • At least part of the bits of the first CRC bits are scrambled with the identifier of the target terminal, and the identifier of the cooperation group is carried in the first scheduling control information.
  • the identifier of the target terminal is any one of the following identifiers: the relative identifier of the target terminal in the cooperative group, and the bitmap corresponding to the target terminal , The cell radio network temporary identifier C-RNTI corresponding to the target terminal, and the high-level identifier corresponding to the target terminal; wherein the bit map includes at least 1 bit, and each bit in the bit map corresponds to For a terminal in the cooperation group, each bit of the bit map is used to indicate the target terminal.
  • an embodiment of the present application provides a cooperative transmission method, including:
  • the cooperative terminal receives the first control information sent by the network device; the cooperative terminal determines the identification of the cooperative group corresponding to the target data and the identification of the target terminal according to the first control information; the cooperative terminal according to the first control information , Receiving the target data sent by the network device.
  • the first control information includes first scheduling control information corresponding to the target data, and first cyclic redundancy check CRC bits corresponding to the first scheduling control information;
  • the collaborative terminal determines the identity of the collaborative group corresponding to the target data and the identity of the target terminal, including:
  • the coordinated terminal determines the identifier of the coordinated group corresponding to the target data and the identifier of the target terminal according to the first scheduling control information and/or the first CRC bit.
  • the coordinated terminal determining the identifier of the coordinated group corresponding to the target data and the identifier of the target terminal according to the first scheduling control information and/or the first CRC bit includes:
  • the cooperative terminal uses the identity of at least one cooperation group in which it is located, and the identity of at least one target terminal in the respective cooperation group to descramble at least part of the first CRC bit, and the one used when the descrambling is successful
  • the identifier of the cooperation group is used as the identifier of the cooperation group corresponding to the target data
  • the identifier of the target terminal used when the descrambling is successful is used as the identifier of the target terminal corresponding to the target data.
  • the coordinated terminal determining the identifier of the coordinated group corresponding to the target data and the identifier of the target terminal according to the first scheduling control information and/or the first CRC bit includes:
  • the cooperative terminal descrambles at least part of the first CRC bits by using the identifier of the at least one cooperative group in which it is located, and uses the identifier of the cooperative group that successfully descrambles as the identifier of the cooperative group corresponding to the target data
  • the cooperative terminal obtains the identifier of the target terminal corresponding to the target data according to the first scheduling control information.
  • the coordinated terminal determining the identifier of the coordinated group corresponding to the target data and the identifier of the target terminal according to the first scheduling control information and/or the first CRC bit includes:
  • the cooperative terminal descrambles at least part of the first CRC bits by using the identifier of at least one target terminal in the at least one cooperative group in which it is located, and uses the identifier of the target terminal successfully descrambling as the target data
  • the identifier of the corresponding target terminal; the cooperative terminal obtains the identifier of the cooperative group corresponding to the target data according to the first scheduling control information.
  • the method further includes:
  • the cooperation terminal sends second control information to the target terminal, where the second control information is used to indicate the identity of the cooperation group corresponding to the target data and the identity of the target terminal; the cooperation terminal according to the first 2. Control information, sending the target data to the target terminal.
  • the second control information includes: second scheduling control information corresponding to the target data, and second CRC bits corresponding to the second scheduling control information; and the identification of the cooperation group And the identifier of the target terminal is carried in the second CRC bit and/or the second scheduling control information.
  • the first part of the second CRC bit is scrambled with the identity of the cooperation group, and the second part of the second CRC bit is the identity of the target terminal. Perform scrambling.
  • At least some bits of the second CRC bits are scrambled with the identification of the cooperation group, and the identification of the target terminal is carried in the second scheduling control information.
  • At least some bits of the second CRC bits are scrambled with the identifier of the target terminal, and the identifier of the cooperation group is carried in the second scheduling control information.
  • the identifier of the target terminal is any one of the following identifiers: the relative identifier of the target terminal in the cooperative group, and the bitmap corresponding to the target terminal , The cell radio network temporary identifier C-RNTI corresponding to the target terminal, and the high-level identifier corresponding to the target terminal;
  • the bit map includes at least one bit, each bit in the bit map corresponds to one terminal in the cooperation group, and each bit in the bit map is used to indicate the target terminal.
  • an embodiment of the present application provides a cooperative transmission device, including:
  • a processing module configured to generate an identifier of a collaboration group corresponding to target data and an identifier of a target terminal, where the target data is data to be transmitted by the network device to the target terminal;
  • the sending module is configured to send first control information to at least one terminal, where the first control information is used to indicate the identity of the cooperation group corresponding to the target data and the identity of the target terminal, and the at least one terminal includes at least one cooperative terminal And/or at least one target terminal;
  • the sending module is further configured to send the target data to the at least one terminal according to the first control information.
  • the first control information includes first scheduling control information corresponding to the target data, and first cyclic redundancy check CRC bits corresponding to the first scheduling control information;
  • the identification of the cooperation group and the identification of the target terminal are carried in the first CRC bit and/or the first scheduling control information.
  • the first part of the first CRC bit is scrambled with the identity of the cooperation group, and the second part of the first CRC bit is the identity of the target terminal Perform scrambling.
  • At least part of the bits of the first CRC bit is scrambled with the identification of the cooperation group, and the identification of the target terminal is carried in the first scheduling control information.
  • At least part of the bits of the first CRC bits are scrambled with the identifier of the target terminal, and the identifier of the cooperation group is carried in the first scheduling control information.
  • the identifier of the target terminal is any one of the following identifiers: the relative identifier of the target terminal in the cooperative group, and the bitmap corresponding to the target terminal , The cell radio network temporary identifier C-RNTI corresponding to the target terminal, and the high-level identifier corresponding to the target terminal; wherein the bit map includes at least 1 bit, and each bit in the bit map corresponds to For a terminal in the cooperation group, each bit of the bit map is used to indicate the target terminal.
  • an embodiment of the present application provides a cooperative transmission device, including:
  • a processing module configured to determine the identity of the collaboration group corresponding to the target data and the identity of the target terminal according to the first control information
  • the receiving module is further configured to receive the target data sent by the network device according to the first control information.
  • the first control information includes first scheduling control information corresponding to the target data, and first cyclic redundancy check CRC bits corresponding to the first scheduling control information;
  • the processing module is specifically configured to: according to the first scheduling control information and/or the first CRC bit, determine the identity of the cooperation group corresponding to the target data and the identity of the target terminal.
  • the processing module is specifically configured to: use the identity of at least one cooperation group in which it is located, and the identity of at least one target terminal in the respective cooperation group to at least part of the first CRC bit. Bits are used for descrambling, the identification of the cooperation group used when the descrambling is successful is used as the identification of the cooperation group corresponding to the target data, and the identification of the target terminal used when the descrambling is successful is used as the target terminal corresponding to the target data Logo.
  • the processing module is specifically configured to: descramble at least part of the first CRC bit by using the identifier of the at least one cooperation group in which the processing module is located, and perform descrambling on the successfully descrambling cooperation group
  • the identifier of is used as the identifier of the cooperation group corresponding to the target data; and the identifier of the target terminal corresponding to the target data is obtained according to the first scheduling control information.
  • the processing module is specifically configured to: use the identifier of at least one target terminal in at least one cooperation group in which it is located to descramble at least part of the first CRC bit, and The identifier of the target terminal that successfully descrambles is used as the identifier of the target terminal corresponding to the target data; and the identifier of the cooperation group corresponding to the target data is obtained according to the first scheduling control information.
  • the device further includes a sending module; the sending module is used to send second control information to the target terminal, and the second control information is used to indicate the cooperation corresponding to the target data The identity of the group and the identity of the target terminal; the sending module is further configured to send the target data to the target terminal according to the second control information.
  • the second control information includes: second scheduling control information corresponding to the target data, and second CRC bits corresponding to the second scheduling control information; and the identification of the cooperation group And the identifier of the target terminal is carried in the second CRC bit and/or the second scheduling control information.
  • the first part of the second CRC bit is scrambled with the identity of the cooperation group, and the second part of the second CRC bit is the identity of the target terminal. Perform scrambling.
  • At least some bits of the second CRC bits are scrambled with the identification of the cooperation group, and the identification of the target terminal is carried in the second scheduling control information.
  • At least some bits of the second CRC bits are scrambled with the identifier of the target terminal, and the identifier of the cooperation group is carried in the second scheduling control information.
  • the identifier of the target terminal is any one of the following identifiers: the relative identifier of the target terminal in the cooperative group, and the bitmap corresponding to the target terminal , The cell radio network temporary identifier C-RNTI corresponding to the target terminal, and the high-level identifier corresponding to the target terminal; wherein the bit map includes at least 1 bit, and each bit in the bit map corresponds to For a terminal in the cooperation group, each bit in the bit map is used to indicate the target terminal.
  • an embodiment of the present application provides a network device, including a memory and a processor, the memory is configured to store a computer program, and the processor is configured to call and run the computer program from the memory, so that all The processor runs the computer program to execute the cooperative transmission method according to any one of the first aspect.
  • an embodiment of the present application provides a terminal, including a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the The processor runs the computer program to execute the cooperative transmission method according to any one of the second aspect.
  • an embodiment of the present application provides a chip including a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the The processor runs the computer program to execute the coordinated transmission method according to any one of the first aspect or the coordinated transmission method according to any one of the second aspect.
  • an embodiment of the present application provides a storage medium, where the storage medium includes a computer program that, when executed by a processor, implements the method according to any one of the first aspect, or, as the second aspect Any one of the methods.
  • embodiments of the present application provide a computer program product, which can be executed by a processor, and when the computer program product is executed by the processor, the method according to any one of the first aspects is implemented , Or, the method according to any one of the second aspect.
  • the cooperative transmission method, apparatus, and equipment provided by the embodiments of the present application include: a network device generates an identification of a collaboration group corresponding to target data and an identification of a target terminal, the target data being the network device to be transmitted to the target Terminal data; the network device sends first control information to at least one terminal, the first control information is used to indicate the identity of the cooperation group corresponding to the target data and the identity of the target terminal, the at least one terminal includes at least One cooperative terminal and/or at least one target terminal; the network device sends the target data to the at least one terminal according to the first control information.
  • the collaborative terminal can determine whether the target data is based on cooperative transmission after receiving the first control information. And determine whether the data needs to be forwarded to which terminal; after receiving the first control information, the target terminal can determine whether the target data is based on cooperative transmission according to the first control information, and knows that it may receive the data later Data forwarded to the cooperative terminal.
  • FIG. 1A is an architecture diagram of a communication system involved in an embodiment of this application
  • FIG. 1B is a schematic diagram of a cooperative transmission scenario provided by an embodiment of the application.
  • FIG. 1C is a schematic diagram of another cooperative transmission scenario provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of a process of using the C-RNTI of the receiving terminal to scramble the CRC bits of the DCI in an embodiment of the application;
  • FIG. 3 is a schematic flowchart of a cooperative transmission method provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of an indication mode of cooperative transmission in the first stage provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of an indication mode of cooperative transmission in the first stage provided by an embodiment of this application.
  • Fig. 6 is a schematic diagram of an indication mode of cooperative transmission in the first stage provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of an indication mode of cooperative transmission in the first stage provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of an indication mode of cooperative transmission in the first stage provided by an embodiment of this application.
  • FIG. 9 is a schematic flowchart of a cooperative transmission method provided by an embodiment of the application.
  • FIG. 10 is a schematic diagram of an indication mode of cooperative transmission in the second stage provided by an embodiment of this application.
  • FIG. 11 is a schematic diagram of an indication mode of cooperative transmission in the second stage provided by an embodiment of this application.
  • FIG. 12 is a schematic diagram of an indication mode of the second stage cooperative transmission provided by an embodiment of this application.
  • FIG. 13 is a schematic structural diagram of a cooperative transmission device provided by an embodiment of this application.
  • FIG. 14 is a schematic structural diagram of a cooperative transmission device provided by an embodiment of the application.
  • 15 is a schematic diagram of the hardware structure of a network device provided by an embodiment of the application.
  • FIG. 16 is a schematic diagram of the hardware structure of a terminal provided by an embodiment of the application.
  • FIG. 1A the network architecture and service scenarios to which the embodiments of the present application are applicable in conjunction with FIG. 1A, FIG. 1B, and FIG. 1C.
  • the network architecture and business scenarios described in the embodiments of the present application are intended to illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application.
  • the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.
  • FIG. 1A is an architecture diagram of a communication system involved in an embodiment of this application.
  • the communication system includes: network equipment and terminals.
  • the communication system may be a 5G communication system or a communication system evolved in the subsequent 5G, or may be other wireless communication networks, such as a wifi communication system, etc. Of course, it may also be other communication systems in the future, which is not limited here.
  • Network device It can be a device that connects the terminal to the wireless network.
  • the device may be a base station, or various wireless access points, or may refer to a device that communicates with a terminal through one or more sectors on an air interface in an access network.
  • the base station can be used to convert received air frames and IP packets into each other, and act as a router between the terminal and the rest of the access network, where the rest of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate the attribute management of the air interface.
  • the base station can be a base station (BTS) in global system of mobile communication (GSM) or code division multiple access (CDMA), or it can be a broadband code division multiple access (BTS).
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • BTS broadband code division multiple access
  • the base station (nodeB, NB) in wideband code division multiple access (WCDMA) can also be an evolved base station (evolutional nodeB, eNB or eNodeB) in long term evolution (LTE), or a relay station or access point.
  • the base station gNB in the future 5G network is not limited here.
  • a wireless terminal can be a wireless terminal or a wired terminal.
  • a wireless terminal can be a device that provides voice and/or other service data connectivity to users, a handheld device with wireless connection function, or other processing devices connected to a wireless modem.
  • a wireless terminal can communicate with one or more core networks via a wireless access network.
  • the wireless terminal can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal, for example, a portable, Pocket, handheld, computer-built or vehicle-mounted mobile devices that exchange language and/or data with wireless access networks.
  • Wireless terminal can also be called system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), remote terminal (remote terminal), connection Access terminal (access terminal), user terminal (user terminal), user agent (user agent), user equipment (user device or user equipment), sensors with network access functions are not limited here.
  • the network equipment can be a base station (base station), a transceiver node (tx/rx point), and a roadside unit (roadside unit) Wait.
  • the terminal may be a mobile phone, a vehicle-mounted terminal, a vehicle with V2V communication capability, and so on.
  • FIG. 1B is a schematic diagram of a cooperative transmission scenario provided by an embodiment of the application.
  • This scenario includes: network equipment and multiple terminals. Among them, multiple terminals are divided into at least one cooperation group.
  • Each cooperation group includes a target terminal (target user equipment, TUE) and a cooperation terminal (cooperation user equipment, CUE).
  • TUE target user equipment
  • CUE cooperation terminal
  • CUE is used to provide cooperative transmission for TUE.
  • Fig. 1B an example is a case where a cooperation group includes 1 TUE and 2 CUEs.
  • the base station and the terminal are access links
  • the terminal and the terminal are cooperative links.
  • the cooperation link can also be called a side link, a side link, an end-to-end (device-to-device, D2D) link, a proximity service (proximity service, prose) link, and a device Direct communication link between.
  • the data transmission of the user collaboration scenario mainly includes two stages.
  • the network device sends the target data to the target terminal TUE through the access link, and the corresponding cooperative terminals CUE1 and CUE2 of the TUE.
  • the base station transmits data in a multicast manner when sending data.
  • CUE1 and CUE2 forward the received data to the TUE through the cooperative link.
  • different forwarding methods can be used, such as amplifying forwarding, decoding forwarding, and compressing forwarding.
  • the TUE can combine the data received from the network equipment in the first stage and the data received from CUE1 and CUE2 in the second stage for decoding, thereby improving the reception performance.
  • FIG. 1C is a schematic diagram of another cooperative transmission scenario provided by an embodiment of the application. As shown in Fig. 1C, this scenario is different from the scenario shown in Fig. 1B in that the TUE does not receive data sent by the network device in the first stage. For example, the TUE is outside the coverage of the cell, or the channel quality of the TUE is too poor and other reasons make the TUE unable to receive the data sent by the network device. In this way, TUE completely relies on receiving the data forwarded by CUE1 and CUE2 in the second stage for decoding.
  • the TUE is at the edge of the network coverage, or the surrounding environment has a relatively large interference to the network service, resulting in low network service quality of the TUE and poor user experience.
  • CUE1 and CUE2 are in the central area of the network coverage, or the surrounding network environment is better, so they can help TUE to carry out cooperative transmission.
  • the capacity of the system that is, the coverage of the network, can be increased, and the quality of service of the network can be improved.
  • multiple terminals may form a cooperative group.
  • a terminal that provides coordinated transmission for other terminals is called a coordinated terminal
  • a terminal that receives coordinated transmission provided by other coordinated terminals is called a target terminal.
  • the number of cooperative terminals included in each cooperative group may be the same or different.
  • Each cooperation group may include one or more target terminals and one or more cooperative terminals. For a certain terminal, it can be a target terminal in a collaboration group centered on itself, and at the same time, it can also be a collaboration terminal in one or more other collaboration groups.
  • the cooperative terminal and the target terminal may perform in-band coordinated transmission, that is, CUE1 (or CUE2) and TUE perform coordinated transmission in the frequency band currently served by the network device.
  • the cooperative terminal and the target terminal can also perform out-of-band coordinated transmission, that is, CUE1 (or CUE2) and TUE do not perform coordinated transmission in the frequency band currently served by the network device, for example, cooperate in an unlicensed frequency. transmission.
  • the embodiment of the application does not specifically limit this.
  • FIG. 1B and FIG. 1C are merely examples for illustration and not limitation.
  • the actual application scenarios may also include more network devices and terminals.
  • the process of downlink data transmission between the network equipment and the terminal is as follows: the network equipment allocates downlink transmission resources for the terminal, and carries the resource allocation information in the downlink control information (DCI), through the physical downlink control channel (physical downlink). control channel, PDCCH) sent to the terminal.
  • the network device fills the above allocated transmission resources with data, and sends the data to the terminal through a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • the terminal determines which transmission resources of the PDSCH channel need to receive data.
  • the terminal receives the PDCCH by blind detection.
  • the terminal can monitor all PDCCHs, demodulate all PDCCHs that may belong to itself, and search for DCIs that belong to itself according to the size of the DCI that may be used.
  • the terminal can try to decode the PDCCH in the set of PDCCH candidates (PDCCH candidates) according to the format of the DCI that needs to be monitored, and this set can be called the search space of the terminal.
  • the search space can be divided into a common search space (common search space) and a user equipment (user equipment, UE) specific search space (UE-specific search space).
  • the public search space is used to transmit cell-level public control information related to paging, broadcast control channel (broadcast control channel, BCCH), etc.
  • the user equipment-specific search space is used to transmit UEs related to downlink data, uplink data, etc. Level of control information.
  • the PDCCH when the network device sends the PDCCH, the PDCCH carries the identifier of the receiving terminal.
  • the terminal can use its own identifier to perform blind detection on the PDCCH to determine which PDCCH needs to be received by itself.
  • the following uses the PDCCH of the NR system as an example to describe how to carry the identifier of the receiving terminal in the PDCCH.
  • the network equipment carries DCI in the PDCCH.
  • the DCI contains information about the scheduled downlink transmission.
  • the network device adds cyclic redundancy check (CRC) bits after the DCI bits.
  • CRC cyclic redundancy check
  • the terminal When receiving the PDCCH, the terminal can judge whether the corresponding DCI is decoded correctly according to the CRC bits obtained by decoding. Specifically, suppose the number of bits contained in DCI is A, denoted as a 0 ,a 1 ,...,a A-1 , and the network device generates CRC bits of length L according to the bits contained in DCI, denoted as p 0 ,p 1 ,...,P L-1 .
  • the network device may use the identifier of the receiving terminal, for example, the cell radio network temporary identifier (C-RNTI) of the receiving terminal to scramble the aforementioned CRC bits.
  • C-RNTI cell radio network temporary identifier
  • Fig. 2 is a schematic diagram of a process of using the C-RNTI of the receiving terminal to scramble the CRC bits of the DCI in an embodiment of the application.
  • the length of C-RNTI is 16 bits, denoted as x 0 , x 1 ,..., x 15 .
  • the network device implicitly carries the C-RNTI of the receiving terminal in the PDCCH.
  • the terminal After receiving the PDCCH and decoding to obtain the DCI and corresponding CRC bits, the terminal uses its own C-RNTI to descramble the CRC bits, and can know whether the target receiving terminal of the PDCCH is itself. If it is oneself, it further receives data from the PDSCH according to the indication information of the DCI; if it is not oneself, it will not receive data from the PDSCH.
  • the sending terminal sends sidelink control information (SCI) through the physical sidelink control channel (PSCCH), and through the physical sidelink shared channel ( phsyical sidelink shared channel, PSSCH) to send data.
  • SCI sidelink control information
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the SCI indicates related information such as transmission resources used by the data transmitted on the PSSCH.
  • the network equipment uses the C-RNTI of the receiving terminal to scramble the CRC bits of the DCI in the PDCCH to indicate to which terminal the data transmitted by the PDSCH is sent.
  • the transmitting terminal uses the receiving terminal's identity (such as the UE's C-RNTI) to scramble the CRC bits of the SCI in the PSCCH to indicate which terminal the data transmitted by the PSSCH is sent to .
  • an embodiment of the present application provides a cooperative transmission method.
  • the control information carries the identification of the cooperative group and the identification of the target terminal, so that the cooperative terminal and the target terminal can Efficiently identify whether the data is based on cooperative transmission.
  • FIG. 3 is a schematic flowchart of a cooperative transmission method provided by an embodiment of the application. As shown in FIG. 3, the method of this embodiment includes:
  • the network device generates the identification of the cooperation group corresponding to the target data and the identification of the target terminal.
  • the applicable scenario of the embodiment of the present application is a scenario based on cooperative transmission.
  • the target terminal and its corresponding one or more cooperative terminals form a cooperative group.
  • target data refers to data that the network device needs to transmit to the target terminal.
  • the network device can send the data directly to the target terminal, or send the data to at least one cooperative terminal in the cooperative group where the target terminal is located, and the cooperative terminal forwards the data to the target terminal after receiving the data.
  • a network device needs to transmit data to a target terminal, it first determines the identity of the cooperation group where the target terminal is located and the identity of the target terminal.
  • the identifier of the cooperation group may be used to indicate that the target data is data based on cooperative transmission, and indicate to which cooperation group the transmission needs to be performed.
  • the identifier of the target terminal is used to indicate to which target terminal in the cooperation group the target data needs to be sent.
  • the network equipment will allocate a cooperation group id (CGID) for each cooperation group in advance, and the network equipment will also notify all terminals in the cooperation group of the cooperation group id.
  • the identity of the cooperation group is unique at least for one cell.
  • the length of the identification of the cooperative group is 16 bits, for example, the group identification of the cooperative group may be 1111111100000000.
  • the length of the identifier of the cooperation group can also be other lengths, which is not limited in this embodiment.
  • the network device also assigns an identifier to each terminal in the cooperation group in advance to distinguish each terminal in the cooperation group.
  • the identification of each terminal is unique to at least one cooperation group.
  • the identifier of the target terminal can be any one of the following identifiers: the relative identifier of the target terminal in the cooperative group, the bitmap corresponding to the target terminal, the C-RNTI corresponding to the target terminal, and the target terminal The physical layer identifier corresponding to the terminal except the C-RNTI, and the high-level identifier corresponding to the target terminal.
  • the network device can use any of the following methods to generate the target terminal identifier.
  • the network device assigns a relative identifier within the group to each terminal in the cooperation group.
  • the relative identifier length in the group is 8 bits.
  • the collaboration group includes 7 CUEs and 1 TUE, and the relative identities of the 7 CUEs in the group are 00000001,00000010,00000011,00000100,00000101,00000110,00000111 in order.
  • the relative identifier of the TUE group is 00001000.
  • the length of the relative identifier in the terminal group may also be other lengths, which is not limited in this embodiment.
  • the relative identifier 00001000 in the group of the target terminal is used to indicate the target terminal corresponding to the target data.
  • the bit map includes at least one bit, each bit in the bit map corresponds to one terminal in the cooperation group, and each bit in the bit map is used to indicate the target terminal.
  • each bit of the bit map corresponds to a certain CUE or TUE of the cooperation group.
  • the cooperation group includes 5 CUEs and 3 TUEs, which are respectively denoted as CUE1, CUE2, CUE3, CUE4, CUE5, TUE1, TUE2, and TUE3.
  • the 8 bits of the bit map are in one-to-one correspondence with the aforementioned 8 UEs from left to right. If the bit at the corresponding position is 1, it indicates the UE corresponding to the position; if the bit at the corresponding position is 0, it does not indicate the UE corresponding to the position.
  • the bitmap 00000101 may be used to indicate the target terminal corresponding to the target data.
  • the bitmap 00000110 can be used to indicate the target terminal corresponding to the target data.
  • the length of the bitmap is 8, the case where the cooperative group includes 8 UEs at most is supported.
  • a bitmap with more bits can be used.
  • the embodiment of the present application does not limit the length of the bitmap. The above examples are only illustrative.
  • each bit in the bit map corresponds to each target terminal in the cooperation group. Assuming that the length of the bitmap is 8, there are 5 CUEs and 5 TUEs in the cooperation group, denoted as CUE1, CUE2, CUE3, CUE4, CUE5, TUE1, TUE2, TUE3, TUE4, TUE5.
  • the 8 bits of the bit map are in one-to-one correspondence with the aforementioned 5 TUEs from left to right. If the number of TUEs is less than 8, the remaining bits are set to 0.
  • the bitmap 10001000 may be used to indicate the target terminals corresponding to the target data.
  • the bit map 0100000 can be used to indicate the target terminal corresponding to the target data.
  • the C-RNTI is a dynamic identification assigned to the terminal by the network equipment, which uniquely identifies the terminal in a cell, and the C-RNTI is valid only for the terminal in the connected state.
  • the base station may also allocate a physical layer identifier different from the aforementioned C-RNTI to the UE, and the physical layer identifier is also unique in a cell.
  • the identification of the target terminal at the MAC layer or the RRC layer is used as the identification of the target terminal.
  • the network device sends first control information to at least one terminal, where the first control information is used to indicate the identity of the cooperation group corresponding to the target data and the identity of the target terminal, and the at least one terminal includes at least one cooperative terminal and / Or at least one target terminal.
  • the cooperative terminal receives the first control information sent by the network device, and according to the first control information, determines the identity of the cooperation group corresponding to the target data and the identity of the target terminal.
  • S304 The network device sends the target data to the at least one terminal according to the first control information.
  • S305 The cooperative terminal receives the target data sent by the network device according to the first control information.
  • the first control information is scheduling related information used to indicate the target data transmitted by the network device on the PDSCH channel, such as: time-frequency resources occupied by data transmission, modulation and coding scheme (MCS), etc.
  • the network device may send the first control information to at least one terminal through the PDCCH channel.
  • the network device sends the first control information to one or more cooperative terminals and one or more target terminals in the cooperation group, corresponding to the cooperative transmission scenario shown in FIG. 1B.
  • the network device sends the first control information to one or more cooperative terminals in the cooperation group, which corresponds to the cooperative transmission scenario shown in FIG. 1C.
  • the first control information sent by the network device to the terminal is also used to indicate the identity of the collaboration group corresponding to the target data and the identity of the target terminal.
  • the network device may explicitly carry the identification of the cooperation group corresponding to the target data and the identification of the target terminal in the first control information.
  • the network device may also implicitly carry the identification of the cooperation group corresponding to the target data and the identification of the target terminal in the first control information.
  • the network device may also carry the identification of the cooperation group corresponding to the target data and the identification of the target terminal in the first control information in a combination of explicit and implicit methods.
  • the indication mode for the network device to indicate the identification of the cooperation group and the identification of the target terminal in the first control information may be agreed with the terminal in advance, or may be notified to the terminal after the network device determines it.
  • the network device After the network device sends the first control information through the PDCCH channel, the network device also sends the target data to the target terminal and the cooperative terminal in the cooperation group on the PDSCH channel according to the first control information.
  • the cooperative terminal and/or the target terminal receives the first control information sent by the network device through the PDCCH channel, and according to the first control information, determines the identity of the cooperation group corresponding to the target data and the identity of the target terminal. Therefore, the cooperative terminal can determine whether the target data is based on cooperatively transmitted data and whether it needs to be forwarded to other terminals. The target terminal can determine whether the target data is based on cooperatively transmitted data, and know that it may receive it later. Data forwarded by the cooperative terminal. Subsequently, the cooperative terminal and/or the target terminal receives the target data through the PDSCH channel according to the first control information.
  • the network device generates the identification of the collaboration group corresponding to the target data and the identification of the target terminal, and indicates the identification of the collaboration group corresponding to the target data and the identification of the target terminal in the first control information, so that the collaboration
  • the terminal can determine whether the target data is based on cooperative transmission according to the first control information, and determine whether the data needs to be forwarded to which terminal; after the target terminal receives the first control information, it can According to the first control information, it is determined whether the target data is data based on cooperative transmission, and it is known that it may receive data forwarded by the cooperative terminal subsequently.
  • the first control information includes DCI corresponding to the target data and CRC bits corresponding to the DCI.
  • the network device carries the identification of the cooperation group corresponding to the target data and the identification of the target terminal in the DCI and/or CRC bits.
  • the cooperative terminal determines the identification of the cooperative group corresponding to the target data and the identification of the target terminal according to the DCI and/or CRC bits.
  • the network device may indicate the identification of the cooperation group corresponding to the target data and the identification of the target terminal in the first control information through the following possible implementation manners.
  • the first part of the CRC bit is scrambled with the identity of the cooperation group, and the second part of the CRC bit is scrambled with the identity of the target terminal.
  • the length of the CRC bit is 24 bits
  • the length of the identifier of the cooperation group is 16 bits
  • the length of the identifier of the target terminal is 8 bits.
  • the first 16 bits of the CRC bit can be scrambled using the identifier of the cooperative group
  • the last 8 bits of the CRC bit can be scrambled using the identifier of the target terminal.
  • use the identifier of the target terminal to scramble the first 8 bits of the CRC bit
  • use the identifier of the cooperation group to scramble the last 16 bits of the CRC bit.
  • the length of the CRC bit is 24 bits
  • the length of the identifier of the cooperation group is 8 bits
  • the length of the identifier of the target terminal is 8 bits.
  • the first 8 bits of the CRC bit can be scrambled using the identifier of the cooperation group
  • the last 8 bits of the CRC bit can be scrambled using the identifier of the target terminal
  • the middle 8 bits of the CRC bit are not scrambled.
  • the first 8 bits of the CRC bit are scrambled using the identifier of the cooperative group
  • the middle 8 bits of the CRC bit are scrambled using the identifier of the target terminal, and the last 8 bits of the CRC bit are not scrambled.
  • the scrambling method adopted by the network device may be an existing scrambling method, for example, modulo-2 addition is performed on the value of the corresponding bit. Of course, other scrambling methods can also be used.
  • the scrambling method and the scrambling bit used by the network device may be agreed with the terminal in advance, or may be determined by the network device and notified to the terminal.
  • the identification of the collaboration group may be CGID.
  • the identification of the target terminal can be any one of the following: the relative identification of the target terminal in the cooperative group, the bit map corresponding to the target terminal, the C-RNTI corresponding to the target terminal, and the other than the C-RNTI corresponding to the target terminal.
  • External physical layer identification and high-level identification corresponding to the target terminal An example will be given below with reference to Figs. 4 and 5.
  • Fig. 4 is a schematic diagram of an indication mode of cooperative transmission in the first stage provided by an embodiment of the application.
  • the group identification of the cooperative group is 1111111100000000.
  • the identifier of the target terminal adopts the relative identifier within the group, and the length of the relative identifier within the group is 8 bits.
  • the collaboration group contains 7 CUEs and 1 TUE, the relative identities of the 7 CUEs in the group are 00000001, 00000010,00000011,00000100,00000101,00000110,00000111.
  • the relative identifier of the TUE group is 00001000.
  • the network device After the network device determines the DCI bit, it generates the CRC bit according to the DCI bit. Assume that the length of the CRC bits is 24 bits. Referring to FIG. 4, the network device uses the identity of the cooperative group (1111111100000000) to scramble the last 16 bits of the CRC bit, and uses the relative identity within the TUE group (00001000) to scramble the first 8 bits of the CRC bit.
  • Fig. 5 is a schematic diagram of an indication mode of cooperative transmission in the first stage provided by an embodiment of the application.
  • the length of the identifier of the cooperative group is 16 bits
  • the group identifier of the cooperative group is 1111111100000000.
  • the identification of the target terminal adopts a bit map.
  • the length of the bit map is 8 bits, and each bit of the bit map corresponds to a certain CUE or TUE of the cooperation group.
  • the cooperative group includes 5 CUEs and 3 TUEs, which are respectively denoted as CUE1, CUE2, CUE3, CUE4, CUE5, TUE1, TUE2, and TUE3.
  • the target terminals corresponding to the target data to be sent by the network device are TUE1 and TUE3, and the bitmap 00000101 can be used to indicate the target terminal corresponding to the target data.
  • the network device After the network device determines the DCI bit, it generates the CRC bit according to the DCI bit. Assume that the length of the CRC bits is 24 bits. Referring to FIG. 5, the network device uses the identification of the cooperative group (1111111100000000) to scramble the last 16 bits of the CRC bit, and uses a bit map (00001000) to scramble the first 8 bits of the CRC bit.
  • the cooperative terminal adopts a blind detection method for receiving the PDCCH.
  • the cooperative terminal decodes the first control information to obtain DCI bits and CRC bits.
  • the cooperative terminal uses the identity of at least one cooperation group in which it is located and the identity of at least one target terminal in the respective cooperation group to descramble at least part of the CRC bits.
  • the cooperative terminal uses the identifier of the cooperative group to descramble the last 16 bits of the CRC bit, and uses the relative identifier of the target terminal to descramble the first 8 bits of the CRC bit; or, Corresponding to FIG.
  • the terminal uses the identifier of the cooperation group to descramble the last 16 bits of the CRC bit, and uses the bit map corresponding to the target terminal to descramble the first 8 bits of the CRC bit.
  • the cooperative terminal uses the identifier of the cooperation group used when the descrambling succeeds as the identifier of the cooperation group corresponding to the target data, and uses the identifier of the target terminal used when the descrambling succeeds as the identifier of the target terminal corresponding to the target data.
  • terminal A is located in assistance group 1, collaboration group 2, and collaboration group 3 at the same time, and terminal A is a target terminal in collaboration group 1, and terminal A is a collaboration terminal in collaboration group 2 and collaboration group 3.
  • terminal A uses the identity of cooperation group 1 and its own identity to descramble the CRC bits for the first time. If the first descrambling is successful, terminal A determines that the target data is the data sent to itself, and No need to forward.
  • the terminal A uses the identity of the cooperation group 2 and the identity of the target terminal in the cooperation group 2 to descramble the CRC bits for the second time. If the second descrambling is successful, the terminal A determines that the target data is data based on cooperative transmission and needs to be forwarded to the target terminal in the cooperative group 2. If the second descrambling fails, the terminal uses the identity of the cooperation group 3 and the identity of the target terminal in the cooperation group 3 to descramble the CRC bits for the third time. If the third descrambling is successful, the terminal A determines that the target data is data based on cooperative transmission and needs to be forwarded to the target terminal in the cooperative group 3.
  • the cooperative terminal after receiving the first control information sent by the network device, the cooperative terminal will obtain the identifier of the cooperative group implicitly indicated by it and the identifier of the target terminal.
  • the cooperative terminal knows that the target data scheduled by the PDCCH is data based on cooperative transmission; through the identification of the target terminal, the cooperative terminal knows to which target data received from the network device needs to be forwarded in the second stage of cooperative transmission Target terminal.
  • the target terminal after the target terminal receives the first control information sent by the network device, it will obtain the identity of the cooperation group implicitly indicated and the identity of the target terminal.
  • the target terminal Through the identification of the cooperative group, the target terminal knows that the target data scheduled by the PDCCH is data based on cooperative transmission; through the identification of the target terminal, the target terminal knows that the data transmission scheduled by the PDCCH is for itself, and may receive the cooperative terminal later. The forwarded data.
  • the identification of the target terminal and the identification of the cooperative group can be implicitly indicated without increasing the number of bits of the DCI, which ensures the effectiveness of cooperative transmission and improves the utilization of resources.
  • At least part of the CRC bits are scrambled with the identification of the cooperation group, and the identification of the target terminal is carried in the first scheduling control information.
  • the network device uses the identifier of the cooperation group to scramble part or all of the CRC bits. Which bits are scrambled depends on the length of the identifier of the cooperation group and the length of the CRC bits. Exemplarily, assuming that the length of the CRC bit is 24 and the length of the identifier of the cooperative group is 24, then all the bits of the CRC bit are scrambled using the identifier of the cooperative group. Assuming that the length of the CRC bit is 24 and the length of the identification of the cooperation group is 32, the first 24 bits or the last 24 bits of the identification of the cooperation group are used to scramble all the CRC bits or the middle 24 bits are used for the CRC. All bits of the bit are scrambled. Assuming that the length of the CRC bit is 24 and the length of the identification of the cooperation group is 16, the first 16 bits or the last 16 bits or the middle 16 bits of the CRC bits are scrambled using the identification of the cooperation group.
  • the network device explicitly carries the identification of the target terminal in the DCI.
  • an information field may be added to the DCI to indicate the identity of the target terminal, or an existing information field in the DCI may be reused to indicate the identity of the target terminal, which is not limited in this embodiment.
  • the target terminal's identity can also be any of the following: the target terminal's relative identity in the cooperative group, the bitmap corresponding to the target terminal, the C-RNTI corresponding to the target terminal, and the target terminal The physical layer identifier corresponding to the terminal other than the C-RNTI, and the high-level identifier corresponding to the target terminal.
  • Fig. 6 is a schematic diagram of an indication mode of cooperative transmission in the first stage provided by an embodiment of the application.
  • Fig. 6 shows a situation in which the last 16 bits of the CRC bits are scrambled with the identifier of the cooperation group, and the identifier of the target terminal is explicitly carried in a certain information field of the DCI.
  • the cooperative terminal adopts a blind detection method for receiving the PDCCH.
  • the cooperative terminal decodes the first control information to obtain DCI bits and CRC bits.
  • the cooperative terminal uses the identity of at least one cooperation group in which it is located to descramble at least part of the CRC bits. For example, corresponding to Fig. 6, the identity of the at least one cooperation group in which it is located is used to perform the last 16 bits of the CRC bit. Perform descrambling, and use the identifier of the collaboration group that successfully descrambles as the identifier of the collaboration group corresponding to the target data. Further, the cooperative terminal can obtain the identifier of the target terminal corresponding to the target data according to the DCI bit.
  • Terminal A is located in assist group 1, collaboration group 2, and collaboration group 3 at the same time.
  • the terminal A first descrambles the CRC bits using the identifier of the cooperation group 1. If the first descrambling is successful, the terminal A determines that the target terminal corresponding to the target data is a terminal in the cooperation group 1. If the first descrambling fails, the terminal A uses the identifier of the cooperation group 2 to descramble the CRC bits for the second time. If the second descrambling is successful, terminal A determines that the target terminal corresponding to the target data is a terminal in cooperation group 2.
  • the terminal uses the identifier of the cooperation group 3 to descramble the CRC bits for the third time. If the third descrambling is successful, terminal A determines that the target terminal corresponding to the target data is a terminal in cooperation group 3. Further, after terminal A determines the cooperation group corresponding to the target data, it also needs to determine the identity of the target terminal according to the DCI bit. Suppose terminal A determines that the cooperation group corresponding to the target data is cooperation group 2 by descrambling the CRC bits, and determines that the identification of the target terminal is 00000100 through the DCI bits, then terminal A finally determines that the target terminal corresponding to the target data is the cooperation group The terminal identified as 00000100 in 2.
  • the cooperative terminal after receiving the first control information sent by the network device, the cooperative terminal will obtain the identifier of the cooperative group indicated by it and the identifier of the target terminal.
  • the cooperative terminal knows that the target data scheduled by the PDCCH is data based on cooperative transmission; through the identification of the target terminal, the cooperative terminal knows to which target data received from the network device needs to be forwarded in the second stage of cooperative transmission Target terminal.
  • the target terminal after the target terminal receives the first control information sent by the network device, it will obtain the identifier of the cooperation group indicated by it and the identifier of the target terminal.
  • the target terminal Through the identification of the cooperative group, the target terminal knows that the target data scheduled by the PDCCH is data based on cooperative transmission; through the identification of the target terminal, the target terminal knows that the data transmission scheduled by the PDCCH is for itself, and may receive the cooperative terminal later. The forwarded data.
  • the identification of the cooperative group and the identification of the target terminal can be indicated without increasing the number of bits contained in the DCI or only a small number of bits, ensuring the effectiveness of cooperative transmission and improving resource utilization.
  • At least part of the CRC bits are scrambled with the identifier of the target terminal, and the identifier of the cooperation group is carried in the first scheduling control information.
  • the network device uses the identifier of the target terminal to scramble part or all of the CRC bits. Which bits are scrambled depends on the length of the identifier of the target terminal and the length of the CRC bits. Exemplarily, assuming that the length of the CRC bit is 24 and the length of the identifier of the target terminal is 24, then all the bits of the CRC bit are scrambled using the identifier of the target terminal. Assuming that the length of the CRC bits is 24 and the length of the identifier of the target terminal is 32, the first 24 bits or the last 24 bits or the middle 24 bits of the identifier of the target terminal are used to scramble all the CRC bits.
  • the identification of the target terminal can also be any one of the following: the relative identification of the target terminal in the cooperative group, the bit map corresponding to the target terminal, the C-RNTI corresponding to the target terminal, and the C-RNTI corresponding to the target terminal. -Physical layer identification outside RNTI, high-level identification corresponding to the target terminal.
  • the network device explicitly carries the identification of the cooperation group in the DCI.
  • an information field may be added to the DCI to indicate the identity of the cooperation group, or an existing information field in the DCI may be reused to indicate the identity of the cooperation group, which is not limited in this embodiment.
  • FIG. 7 is a schematic diagram of an indication manner of cooperative transmission in the first stage provided by an embodiment of the application.
  • FIG. 7 shows a situation in which the first 8 bits of the CRC bits are scrambled with the identifier of the target terminal, and the identifier of the cooperation group is explicitly carried in a certain information field of the DCI.
  • the cooperative terminal adopts a blind detection method for receiving the PDCCH.
  • the cooperative terminal decodes the first control information to obtain DCI bits and CRC bits.
  • the cooperative terminal uses the identification of at least one target terminal in at least one cooperation group in which it is located to descramble at least part of the CRC bits. For example, corresponding to FIG. 7, each target terminal in each cooperation group in which it is located is used. Descramble the last 16 bits of the CRC bits, and use the identifier of the target terminal that successfully descrambles as the identifier of the target terminal corresponding to the target data. Further, the cooperative terminal can obtain the identifier of the cooperative group corresponding to the target data according to the DCI bit.
  • a cooperative terminal it may be located in multiple cooperative groups at the same time, and for each cooperative group, it may contain multiple target terminals.
  • terminal A is located in cooperation group 1 and cooperation group 2, where the target terminals in cooperation group 1 are TUE1 and TUE2, and the target terminal in cooperation group 2 is TUE1.
  • the cooperative terminal first uses the identifier of TUE1 in the cooperative group 1 to descramble the CRC bits for the first time. If the first descrambling is successful, the terminal A determines that the target terminal corresponding to the target data is TUE1 in the cooperative group 1. If the first descrambling fails, terminal A uses the identifier of TUE2 in the cooperation group 1 to descramble the CRC bits for the second time.
  • terminal A determines that the target terminal corresponding to the target data is TUE2 in cooperation group 1. If the second descrambling fails, the terminal A uses the identifier of TUE1 in the cooperation group 2 to descramble the CRC bits for the third time. If the third descrambling is successful, the terminal A determines that the target terminal corresponding to the target data is TUE1 in the cooperation group 2.
  • the identities of the target terminals in the above two cooperation groups may be the same.
  • the identity of TUE1 in cooperation group 2 is the same as that of TUE1 in cooperation group 1, or the identity of TUE1 in assist group 2
  • the identifier is the same as the identifier of TUE2 in the collaboration group 1. Therefore, after terminal A determines the identity of the target terminal corresponding to the target data, it also needs to determine the identity of the cooperation group corresponding to the target data according to the DCI bits.
  • terminal A determines the target data corresponding to the target data by descrambling the CRC bits
  • the identifier of the target terminal is 00000100
  • the DCI bit determines that the cooperation group corresponding to the target data is cooperation group 1
  • the terminal finally determines the target corresponding to the target data
  • the terminal is the terminal identified as 00000100 in the collaboration group 1.
  • the cooperative terminal after receiving the first control information sent by the network device, the cooperative terminal will obtain the identifier of the cooperative group indicated by it and the identifier of the target terminal.
  • the cooperative terminal knows that the target data scheduled by the PDCCH is data based on cooperative transmission; through the identification of the target terminal, the cooperative terminal knows to which target data received from the network device needs to be forwarded in the second stage of cooperative transmission Target terminal.
  • the target terminal after the target terminal receives the first control information sent by the network device, it will obtain the identifier of the cooperation group indicated by it and the identifier of the target terminal.
  • the target terminal Through the identification of the cooperative group, the target terminal knows that the target data scheduled by the PDCCH is data based on cooperative transmission; through the identification of the target terminal, the target terminal knows that the data transmission scheduled by the PDCCH is for itself, and may receive the cooperative terminal later. The forwarded data.
  • the identification of the cooperative group and the identification of the target terminal can be indicated without increasing the number of bits contained in the DCI or only a small number of bits, ensuring the effectiveness of cooperative transmission and improving resource utilization.
  • the identification of the target terminal is implicitly carried in the CRC bits.
  • the network device does not need to allocate the identity of the cooperation group to the cooperation group, but directly uses the identity of the target terminal to identify a cooperation group. Therefore, the network device may not explicitly or implicitly carry the identification of the cooperation group in the first control information, but directly implicitly carry the identification of the target terminal in the CRC bits. Exemplarily, the network device uses the identifier of the target terminal to scramble at least part of the CRC bits.
  • the identification of the target terminal may also be any one of the following: the relative identification of the target terminal in the cooperative group, the bit map corresponding to the target terminal, the C-RNTI corresponding to the target terminal, and the target terminal corresponding The physical layer identifier other than C-RNTI, and the high-level identifier corresponding to the target terminal.
  • FIG. 8 is a schematic diagram of an indication manner of cooperative transmission in the first stage provided by an embodiment of the application. Assuming that the length of the identifier of the target terminal is 8, FIG. 8 shows a situation in which the first 8 bits of the CRC bits are scrambled using the identifier of the target terminal. Of course, the identifier of the target terminal can also be used to scramble the last 8 bits or the middle 8 bits of the CRC bits.
  • the cooperative terminal adopts a blind detection method for receiving the PDCCH.
  • the cooperative terminal decodes the first control information to obtain DCI bits and CRC bits.
  • the cooperative terminal uses the identification of the target terminal in at least one cooperation group in which it is located to descramble at least part of the CRC bits. For example, corresponding to FIG. 8, the identification pair of the target terminal in the at least one cooperation group in which it is located is used.
  • the first 8 bits of the CRC bits are descrambled, and the identifier of the target terminal that successfully descrambles is used as the identifier of the target terminal corresponding to the target data.
  • Terminal A is located in assist group 1, collaboration group 2, and collaboration group 3 at the same time.
  • terminal A uses the identification of the target terminal in cooperation group 1 to descramble the CRC bits for the first time. If the first descrambling is successful, terminal A determines that the target terminal corresponding to the target data is in cooperation group 1. The target terminal. If the first descrambling fails, the terminal A uses the identifier of the target terminal in the cooperation group 2 to descramble the CRC bits for the second time. If the second descrambling is successful, the terminal A determines that the target terminal corresponding to the target data is the target terminal in the cooperation group 2.
  • the terminal uses the identifier of the target terminal in the cooperation group 3 to descramble the CRC bits for the third time. If the third descrambling is successful, terminal A determines that the target terminal corresponding to the target data is the target terminal in cooperation group 3.
  • the cooperative terminal after receiving the first control information sent by the network device, the cooperative terminal will obtain the identity of the target terminal implicitly indicated. Through the identification of the target terminal, the cooperative terminal knows to which target terminal the target data received from the network device needs to be forwarded in the second stage of cooperative transmission. Similarly, after the target terminal receives the first control information sent by the network device, it will obtain the identity of the target terminal implicitly indicated. Through the identification of the target terminal, the target terminal knows that the data transmission scheduled by the PDCCH is for itself, and it may subsequently receive data forwarded by the cooperative terminal.
  • the identification of the target terminal can be indicated without increasing the number of bits contained in the DCI, which ensures the effectiveness of cooperative transmission and improves the utilization of resources.
  • the cooperative terminal needs to know in advance the identification of the cooperative group in which it is located and the identification of one or more target terminals in the cooperative group.
  • the network equipment may notify the cooperative terminal through radio resource control (RRC) signaling, or the network equipment may notify the cooperative terminal through the group information of the cooperative group, or it may also be established in the cooperative group During the process, the network device or the target terminal informs the cooperative terminal through related control signaling.
  • RRC radio resource control
  • the cooperative terminal when the cooperative terminal receives the first control information, even if the CRC bit corresponding to the DCI is not scrambled with its own identity, since it is scrambled with the identity of the target terminal in the cooperative group, the cooperative terminal The terminal will also receive the first control information, and receive corresponding target data according to the first control information.
  • S303 and S305 are described on the side of the cooperative terminal. It is understandable that the processing procedure after the target terminal receives the first control information sent by the network device is similar to that of the cooperative terminal, and will not be repeated here.
  • FIG. 9 is a schematic flowchart of a cooperative transmission method provided by an embodiment of the application. As shown in FIG. 9, the method of this embodiment includes:
  • the network device generates the identification of the cooperation group corresponding to the target data and the identification of the target terminal.
  • the network device sends first control information to at least one terminal, where the first control information is used to indicate the identity of the cooperation group corresponding to the target data and the identity of the target terminal, and the at least one terminal includes at least one cooperative terminal and / Or at least one target terminal.
  • the cooperation terminal and the target terminal receive the first control information sent by the network device, and according to the first control information, determine the identity of the cooperation group and the target terminal corresponding to the target data.
  • S904 The network device sends the target data to the at least one terminal according to the first control information.
  • S905 The cooperative terminal and the target terminal receive the target data sent by the network device according to the first control information.
  • S901 to S905 describe the transmission process of the first stage in cooperative transmission, and the specific implementation is similar to S301 to S305 in the embodiment shown in FIG. 3, and will not be repeated here.
  • the transmission process of the second stage in cooperative transmission will be described below in conjunction with S906 to S909.
  • the cooperation terminal sends second control information to the target terminal, where the second control information is used to indicate the identity of the cooperation group corresponding to the target data and the identity of the target terminal.
  • the target terminal receives the second control information sent by the coordinated terminal, and according to the second control information, determines the identifier of the collaboration group corresponding to the target data and the identifier of the target terminal.
  • S908 The cooperative terminal sends the target data to the target terminal according to the second control information.
  • the target terminal receives the target data sent by the cooperative terminal according to the second control information, and jointly decodes the target data received from the network device and the target data received from the cooperative terminal.
  • the cooperative terminal in the second stage of transmission, carries the second control information through the PSCCH channel, and the identification of the cooperative group corresponding to the target data and the target terminal are indicated in the second control information.
  • the second control information is also used to indicate scheduling related information of the target data transmitted by the coordinated terminal on the PSSCH channel, for example: time-frequency resources occupied by data transmission, MCS, etc.
  • the time-frequency resources occupied by the second-phase transmission may be determined by the network device and notified to the cooperative terminal, or may be determined autonomously by the cooperative terminal from its own resource pool.
  • the second control information sent by the cooperation terminal to the target terminal is also used to indicate the identity of the cooperation group corresponding to the target data and the identity of the target terminal.
  • the collaboration terminal may explicitly carry the identification of the collaboration group corresponding to the target data and the identification of the target terminal in the second control information.
  • the cooperation terminal may also implicitly carry the identification of the cooperation group corresponding to the target data and the identification of the target terminal in the second control information.
  • the cooperation terminal may also carry the identification of the cooperation group corresponding to the target data and the identification of the target terminal in the second control information in a combination of explicit and implicit methods.
  • the indication method for the cooperative terminal to indicate the identification of the cooperative group and the identification of the target terminal in the second control information may be pre-arranged with the target terminal, or may be determined by the network device and notified to the cooperative terminal And the target terminal.
  • the cooperative terminal After the cooperative terminal sends the second control information through the PSCCH channel, it will also send target data to the target terminal through the PSSCH channel according to the second control information.
  • the target terminal receives the second control information through the PSCCH channel, and according to the second control information, determines the identity of the cooperation group corresponding to the target data and the identity of the target terminal.
  • the target terminal can determine that the target data subsequently received through the PSSCH channel is data based on cooperative transmission. Therefore, the target terminal receives the target data through the PSSCH channel according to the second control information, and jointly decodes the target data received from the network device and the target data received from the cooperative terminal, thereby improving reception performance.
  • the second control information includes the SCI corresponding to the target data and the CRC bit corresponding to the SCI.
  • the cooperation terminal carries the identification of the cooperation group corresponding to the target data and the identification of the target terminal in the SCI and/or CRC bits.
  • the target terminal determines the identity of the cooperation group corresponding to the target data and the identity of the target terminal according to the SCI and/or CRC bits.
  • FIG. 10 is a schematic diagram of an indication manner of cooperative transmission in the second stage provided by an embodiment of the application. As shown in FIG. 10, it is assumed that the length of the identifier of the cooperation group is 16 bits, the length of the identifier of the target terminal is 8 bits, and the length of the CRC bit is 24 bits.
  • the cooperative terminal uses the identifier of the cooperative group to scramble the last 16 bits of the CRC bit, and uses the identifier of the target terminal to scramble the first 8 bits of the CRC bit.
  • FIG. 11 is a schematic diagram of an indication manner of cooperative transmission in the second stage provided by an embodiment of the application. Assume that the length of the CRC bit is 24, and the length of the identification of the cooperation group is 16. Figure 11 shows a situation where the target terminal's identity is explicitly carried in a certain information field of the SCI, and the last 16 bits of the CRC bits are scrambled using the cooperation group's identity.
  • FIG. 12 is a schematic diagram of an indication manner of the second stage cooperative transmission provided by an embodiment of the application. Assume that the length of the CRC bit is 24, and the length of the target terminal's identity is 8. Figure 12 shows a situation where the identification of the cooperation group is explicitly carried in a certain information field of the SCI, and the first 8 bits of the CRC bits are scrambled using the identification of the target terminal.
  • the target terminal identifier may also be any one of the following: the relative identifier of the target terminal in the cooperative group, the bit map corresponding to the target terminal, the C-RNTI corresponding to the target terminal, and the target terminal Corresponding high-level identification.
  • the manner in which the cooperative terminal indicates the identification of the cooperative group and the identification of the target terminal in the second control information in the second phase of transmission is the same as the manner in which the network device indicates the identification of the cooperative group in the first control information in the first phase of transmission.
  • the method of identifying the target terminal is similar.
  • the manner in which the target terminal in the second stage determines the identity of the cooperation group and the identity of the target terminal according to the second control information is the same as the manner in which the cooperation terminal in the first stage determines the identity of the cooperation group and the target terminal according to the first control information The way is similar. I won't repeat them here.
  • FIG. 13 is a schematic structural diagram of a cooperative transmission device provided by an embodiment of the application.
  • the assisted transmission device 1300 includes a processing module 1301 and a sending module 1302.
  • the processing module 1301 is configured to generate the identification of the collaboration group corresponding to the target data and the identification of the target terminal, where the target data is data to be transmitted by the network device to the target terminal;
  • the sending module 1302 is configured to send first control information to at least one terminal, where the first control information is used to indicate the identification of the collaboration group corresponding to the target data and the identification of the target terminal, and the at least one terminal includes at least one collaboration Terminal and/or at least one target terminal;
  • the sending module 1302 is further configured to send the target data to the at least one terminal according to the first control information.
  • the first control information includes first scheduling control information corresponding to the target data, and first cyclic redundancy check CRC bits corresponding to the first scheduling control information;
  • the identification of the cooperation group and the identification of the target terminal are carried in the first CRC bit and/or the first scheduling control information.
  • the first part of the first CRC bit is scrambled with the identity of the cooperation group, and the second part of the first CRC bit is the identity of the target terminal Perform scrambling.
  • At least part of the bits of the first CRC bit is scrambled with the identification of the cooperation group, and the identification of the target terminal is carried in the first scheduling control information.
  • At least part of the bits of the first CRC bits are scrambled with the identifier of the target terminal, and the identifier of the cooperation group is carried in the first scheduling control information.
  • the identifier of the target terminal is any one of the following identifiers: the relative identifier of the target terminal in the cooperative group, and the bitmap corresponding to the target terminal , The cell radio network temporary identifier C-RNTI corresponding to the target terminal, and the high-level identifier corresponding to the target terminal; wherein the bit map includes at least 1 bit, and each bit in the bit map corresponds to For a terminal in the cooperation group, each bit of the bit map is used to indicate the target terminal.
  • the cooperative transmission device provided by the embodiment of the present application can be used to implement the technical solution on the network device side in any of the foregoing method embodiments, and its implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 14 is a schematic structural diagram of a cooperative transmission device provided by an embodiment of the application.
  • the cooperative transmission device 1400 provided in this embodiment includes: a receiving module 1401, a processing module 1402, and a sending module 1403.
  • the receiving module 1401 is configured to receive the first control information sent by the network device
  • the processing module 1402 is configured to determine the identity of the collaboration group corresponding to the target data and the identity of the target terminal according to the first control information;
  • the receiving module 1401 is further configured to receive the target data sent by the network device according to the first control information.
  • the first control information includes first scheduling control information corresponding to the target data, and first cyclic redundancy check CRC bits corresponding to the first scheduling control information;
  • the processing module 1402 is specifically configured to determine, according to the first scheduling control information and/or the first CRC bit, the identification of the cooperation group corresponding to the target data and the identification of the target terminal.
  • the processing module 1402 is specifically configured to: use the identity of at least one cooperation group in which it is located, and the identity of at least one target terminal in the respective cooperation group to at least the first CRC bit. Some bits are descrambled, the identification of the cooperation group used when descrambling is successful is used as the identification of the cooperation group corresponding to the target data, and the identification of the target terminal used when the descrambling is successful is used as the target corresponding to the target data The identity of the terminal.
  • the processing module 1402 is specifically configured to: descramble at least part of the first CRC bit by using the identifier of the at least one cooperation group in which it is located, so as to descramble the successful cooperation
  • the group identifier is used as the identifier of the cooperation group corresponding to the target data; and the identifier of the target terminal corresponding to the target data is obtained according to the first scheduling control information.
  • the processing module 1402 is specifically configured to: descramble at least part of the first CRC bit by using the identifier of at least one target terminal in the at least one cooperation group in which it is located, The identifier of the target terminal that successfully descrambles is used as the identifier of the target terminal corresponding to the target data; and the identifier of the cooperation group corresponding to the target data is obtained according to the first scheduling control information.
  • the sending module 1403 is configured to send second control information to the target terminal, and the second control information is used to indicate the identity of the cooperation group corresponding to the target data and the target The identification of the terminal; the sending module 1403 is further configured to send the target data to the target terminal according to the second control information.
  • the second control information includes: second scheduling control information corresponding to the target data, and second CRC bits corresponding to the second scheduling control information; and the identification of the cooperation group And the identifier of the target terminal is carried in the second CRC bit and/or the second scheduling control information.
  • the first part of the second CRC bit is scrambled with the identity of the cooperation group, and the second part of the second CRC bit is the identity of the target terminal. Perform scrambling.
  • At least some bits of the second CRC bits are scrambled with the identification of the cooperation group, and the identification of the target terminal is carried in the second scheduling control information.
  • At least some bits of the second CRC bits are scrambled with the identifier of the target terminal, and the identifier of the cooperation group is carried in the second scheduling control information.
  • the identifier of the target terminal is any one of the following identifiers: the relative identifier of the target terminal in the cooperative group, and the bitmap corresponding to the target terminal , The cell radio network temporary identifier C-RNTI corresponding to the target terminal, and the high-level identifier corresponding to the target terminal; wherein the bit map includes at least 1 bit, and each bit in the bit map corresponds to For a terminal in the cooperation group, each bit in the bit map is used to indicate the target terminal.
  • the cooperative transmission device provided in this embodiment can be used to implement the technical solution on the terminal side in any of the foregoing method embodiments, and its implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 15 is a schematic diagram of the hardware structure of a network device provided by an embodiment of the application.
  • the network device 1500 provided in this embodiment includes: a processor 1501 and a memory 1502;
  • the memory 1502 is used to store computer programs
  • the processor 1501 is configured to execute a computer program stored in a memory to implement the cooperative transmission method executed by the network device in the foregoing embodiment. For details, refer to the related description in the foregoing method embodiment.
  • the memory 1502 may be independent or integrated with the processor 1501.
  • the network device 1500 may further include:
  • the bus 1503 is used to connect the memory 1502 and the processor 1501.
  • the network device 1500 shown in FIG. 15 may further include a transmitter 1504, which is configured to send data or signals to the terminal.
  • the processing module described in FIG. 13 may be integrated in the processor 1501 for implementation, and the sending module may be integrated in the transmitter 1504 for implementation.
  • the network device provided in the embodiment of the present application can be used to execute the method executed by the network device in the foregoing method embodiment, and its implementation principles and technical effects are similar, and details are not described herein again in this embodiment.
  • FIG. 16 is a schematic diagram of the hardware structure of a terminal provided by an embodiment of the application.
  • the terminal 1600 provided in this embodiment includes a processor 1601 and a memory 1602;
  • the memory 1602 is used to store computer programs
  • the processor 1601 is configured to execute a computer program stored in the memory to implement the cooperative transmission method executed by the terminal in the foregoing embodiment. For details, refer to the related description in the foregoing method embodiment.
  • the memory 1602 may be independent or integrated with the processor 1601.
  • the terminal 1600 may further include:
  • the bus 1603 is used to connect the memory 1602 and the processor 1601.
  • the terminal 1600 shown in FIG. 16 may further include a receiver 1604 and a transmitter 1605.
  • the receiver 1604 is used to receive data or signals from a network device
  • the transmitter 1605 is used to send data or signals to other terminals.
  • the processing module described in FIG. 14 may be integrated into the processor 1601 for implementation, the receiving module may be integrated into the receiver 1604 for implementation, and the sending module may be integrated into the transmitter 1605 for implementation.
  • the terminal provided in the embodiment of the present application may be used to execute the method executed by the terminal in the foregoing method embodiment, and its implementation principles and technical effects are similar, and details are not described herein again in this embodiment.
  • An embodiment of the present application also provides a chip, including: a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the chip is installed
  • a chip including: a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the chip is installed
  • An embodiment of the present application also provides a chip, including: a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the chip is installed
  • the terminal performs the cooperative transmission method implemented by the above terminal.
  • the embodiment of the present application also provides a storage medium, the storage medium includes a computer program, and the computer program is used to implement the coordinated transmission method performed by the above network device or the coordinated transmission method performed by the above terminal.
  • the embodiment of the present application also provides a computer program product, the computer program product includes computer program code, when the computer program code runs on a computer, the computer executes the cooperative transmission method implemented by the terminal in the above embodiment, Or implement the cooperative transmission method performed by the above network device.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the modules is only a logical function division, and there may be other divisions in actual implementation, for example, multiple modules can be combined or integrated. To 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 modules, and may be in electrical, mechanical or other forms.
  • modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional modules in the various embodiments of the present application may be integrated into one processing unit, or each module may exist alone physically, or two or more modules may be integrated into one unit.
  • the units formed by the above-mentioned modules can be implemented in the form of hardware or hardware plus software functional units.
  • the above-mentioned integrated modules implemented in the form of software function modules may be stored in a computer readable storage medium.
  • the above-mentioned software function module is stored in a storage medium and includes several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to execute the various embodiments of the present application Part of the method.
  • processor may be a central processing unit (English: central processing unit, abbreviated as: CPU), or other general-purpose processors, digital signal processors (English: digital signal processor, abbreviated as: DSP), and application-specific integrated circuits. (English: application specific integrated circuit, abbreviated as ASIC) etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in this application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the memory may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk storage, and may also be a U disk, a mobile hard disk, a read-only memory, a magnetic disk, or an optical disk.
  • NVM non-volatile storage
  • the bus may be an industry standard architecture (ISA) bus, a peripheral component (PCI) bus, or an extended industry standard architecture (EISA) bus.
  • ISA industry standard architecture
  • PCI peripheral component
  • EISA extended industry standard architecture
  • the bus can be divided into address bus, data bus, control bus, etc.
  • the buses in the drawings of this application are not limited to only one bus or one type of bus.
  • the above-mentioned storage medium can be realized by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Except for programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disks or optical disks.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable except for programmable read only memory
  • PROM programmable read only memory
  • ROM read only memory
  • magnetic memory flash memory
  • flash memory magnetic disks or optical disks.
  • optical disks any available medium that can be accessed by a general-purpose or special-purpose computer.
  • An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and can write information to the storage medium.
  • the storage medium may also be an integral part of the processor.
  • the processor and the storage medium may be located in application specific integrated circuits (ASIC for short).
  • ASIC application specific integrated circuits
  • the processor and the storage medium may also exist as discrete components in the electronic device or the main control device.

Abstract

本申请实施例提供一种协作传输方法、装置及设备,适用于V2X，智能驾驶，车联网等，该方法包括：网络设备生成目标数据对应的协作组的标识和目标终端的标识；所述网络设备向至少一个终端发送第一控制信息，所述第一控制信息用于指示所述目标数据对应的协作组的标识和目标终端的标识，所述至少一个终端包括至少一个协作终端和/或至少一个目标终端；所述网络设备根据所述第一控制信息向所述至少一个终端发送所述目标数据。由于网络设备在第一控制信息中指示目标数据对应的协作组的标识和目标终端的标识，使得协作终端接收到第一控制信息后，能够根据第一控制信息确定出目标数据是否是基于协作传输的数据，并确定出是否需要将数据转发给哪个终端。

Description

协作传输方法、装置及设备
本申请要求于2019年07月23日提交中国专利局、申请号为201910665243X、申请名称为“协作传输方法、装置及设备”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
本申请实施例涉及通信技术领域，尤其涉及一种协作传输方法、装置及设备。
背景技术
在无线通信网络中，当终端处于网络覆盖范围的边缘时，或者，当周围环境对网络服务干扰较大时，终端的网络服务质量较低，使得用户体验较差。为了提升整体网络的服务质量，引入了用户协作机制。用户协作场景包括：网络设备、协作终端和目标终端。其中，协作终端用于为目标终端提供协作传输。
用户协作场景的数据传输主要包括两个阶段。在第一阶段中，网络设备将数据发送给协作终端和目标终端。在第二阶段中，协作终端将接收到的数据转发给目标终端。这样，目标终端可以将第一阶段从网络设备接收到的数据和第二阶段从协作终端接收到的数据联合起来进行解码，从而提高接收性能。
在基于用户协作的传输中，协作终端接收到网络设备发送的数据时，协作终端无法识别出该数据是否是基于用户协作的需要转发的数据。
发明内容
本申请实施例提供一种协作传输方法、装置及设备，以使协作终端接收到网络设备发送的数据时，能够识别出是否是基于用户协作的需要转发的数据。
第一方面，本申请实施例提供一种协作传输方法，包括：
网络设备生成目标数据对应的协作组的标识和目标终端的标识，所述目标数据为所述网络设备待传输给所述目标终端的数据；所述网络设备向至少一个终端发送第一控制信息，所述第一控制信息用于指示所述目标数据对应的协作组的标识和目标终端的标识，所述至少一个终端包括至少一个协作终端和/或至少一个目标终端；所述网络设备根据所述第一控制信息向所述至少一个终端发送所述目标数据。
本实施例中，网络设备生成目标数据对应的协作组的标识和目标终端的标识，并在第一控制信息中指示目标数据对应的协作组的标识和目标终端的标识，使得协作终端接收到第一控制信息后，能够根据第一控制信息确定出目标数据是否是基于协作传输的数据，并确定出是否需要将数据转发给哪个终端；目标终端接收到第一控制信息后，能够根据第一控制信息确定出目标数据是否是基于协作传输的数据，并知道自己随后可能会收到协作终端转发的数据。
在一种可能的实现方式中，所述第一控制信息包括所述目标数据对应的第一调度控制信息，以及所述第一调度控制信息对应的第一循环冗余校验CRC比特；所述协作组的标识和所述目标终端的标识携带在所述第一CRC比特和/或所述第一调度控制信息中。
该实现方式中，通过将协作组的标识的目标终端的标识携带在第一CRC比特和/或第一调度控制信息中，可以在不增加DCI的比特数或者仅增加少量比特的前提下，指示目标终端的标识以及协作组的标识，保证了协作传输的有效性，并提高了资源的利用率。
在一种可能的实现方式中，所述第一CRC比特的第一部分比特位采用所述协作组的标识进行加扰，所述第一CRC比特的第二部分比特位采用所述目标终端的标识进行加扰。
该实现方式中，通过将协作组的标识和目标终端的标识加扰在第一CRC比特中，实现了在不增加DCI的比特数的前提下，隐式地指示目标终端的标识以及协作组的标识，保证了协作传输的有效性，并提高了资源的利用率。
在一种可能的实现方式中，所述第一CRC比特的至少部分比特位采用所述协作组的标识进行加扰，所述目标终端的标识携带在所述第一调度控制信息中。
该实现方式中，通过将协作组的标识加扰在第一CRC比特中，将目标终端的标识携带在第一调度控制信息中，实现了在不增加DCI所含比特数或者仅增加少量比特的前提下，指示协作组的标识和目标终端的标识，保证了协作传输的有效性，并提高了资源的利用率。
在一种可能的实现方式中，所述第一CRC比特的至少部分比特位采用所述目标终端的标识进行加扰，所述协作组的标识携带在所述第一调度控制信息中。
该实现方式中，通过将目标终端的标识加扰在第一CRC比特中，将协作组的标识携带在第一控制信息中，实现了在不增加DCI所含比特数或者仅增加少量比特的前提下，指示协作组的标识和目标终端的标识，保证了协作传输的有效性，并提高了资源的利用率。
在一种可能的实现方式中，所述目标终端的标识为下述标识中的任意一种标识：所述目标终端在所述协作组中的组内相对标识、所述目标终端对应的比特地图、所述目标终端对应的小区无线网络临时标识C-RNTI、所述目标终端对应的高层标识；其中，所述比特地图包括至少1个比特位，所述比特地图中的每个比特位分别对应所述协作组中的一个终端，所述比特地图的各比特用于指示所述目标终端。
第二方面，本申请实施例提供一种协作传输方法，包括：
协作终端接收网络设备发送的第一控制信息；所述协作终端根据所述第一控制信息，确定目标数据对应的协作组的标识和目标终端的标识；所述协作终端根据所述第一控制信息，接收所述网络设备发送的所述目标数据。
在一种可能的实现方式中，所述第一控制信息包括所述目标数据对应的第一调度控制信息，以及所述第一调度控制信息对应的第一循环冗余校验CRC比特；所述协作终端根据所述第一控制信息，确定目标数据对应的协作组的标识和目标终端的标识，包括：
所述协作终端根据所述第一调度控制信息和/或所述第一CRC比特，确定目标数据对应的协作组的标识和目标终端的标识。
在一种可能的实现方式中，所述协作终端根据所述第一调度控制信息和/或所述第一CRC比特，确定目标数据对应的协作组的标识和目标终端的标识，包括：
所述协作终端采用自身所在的至少一个协作组的标识，以及各自协作组中的至少一个目标终端的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功时采用的协 作组的标识作为所述目标数据对应的协作组的标识，并将解扰成功时采用的目标终端的标识作为所述目标数据对应的目标终端的标识。
在一种可能的实现方式中，所述协作终端根据所述第一调度控制信息和/或所述第一CRC比特，确定目标数据对应的协作组的标识和目标终端的标识，包括：
所述协作终端采用自身所在的至少一个协作组的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功的协作组的标识作为所述目标数据对应的协作组的标识；所述协作终端根据所述第一调度控制信息，获取所述目标数据对应的目标终端的标识。
在一种可能的实现方式中，所述协作终端根据所述第一调度控制信息和/或所述第一CRC比特，确定目标数据对应的协作组的标识和目标终端的标识，包括：
所述协作终端采用自身所在的至少一个协作组中的至少一个目标终端的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功的目标终端的标识作为所述目标数据对应的目标终端的标识；所述协作终端根据所述第一调度控制信息，获取所述目标数据对应的协作组的标识。
在一种可能的实现方式中，所述协作终端根据所述第一控制信息，接收所述网络设备发送的所述目标数据之后，所述方法还包括：
所述协作终端向所述目标终端发送第二控制信息，所述第二控制信息用于指示所述目标数据对应的协作组的标识和所述目标终端的标识；所述协作终端根据所述第二控制信息，向所述目标终端发送所述目标数据。
在一种可能的实现方式中，所述第二控制信息包括：所述目标数据对应的第二调度控制信息，以及所述第二调度控制信息对应的第二CRC比特；所述协作组的标识和所述目标终端的标识携带在所述第二CRC比特和/或所述第二调度控制信息中。
在一种可能的实现方式中，所述第二CRC比特的第一部分比特位采用所述协作组的标识进行加扰，所述第二CRC比特的第二部分比特位采用所述目标终端的标识进行加扰。
在一种可能的实现方式中，所述第二CRC比特的至少部分比特位采用所述协作组的标识进行加扰，所述目标终端的标识携带在所述第二调度控制信息中。
在一种可能的实现方式中，所述第二CRC比特的至少部分比特位采用所述目标终端的标识进行加扰，所述协作组的标识携带在所述第二调度控制信息中。
在一种可能的实现方式中，所述目标终端的标识为下述标识中的任意一种标识：所述目标终端在所述协作组中的组内相对标识、所述目标终端对应的比特地图、所述目标终端对应的小区无线网络临时标识C-RNTI、所述目标终端对应的高层标识；
其中，所述比特地图包括至少1个比特位，所述比特地图中的每个比特位分别对应所述协作组中的一个终端，所述比特地图中的各比特用于指示所述目标终端。
第三方面，本申请实施例提供一种协作传输装置，包括：
处理模块，用于生成目标数据对应的协作组的标识和目标终端的标识，所述目标数据为所述网络设备待传输给所述目标终端的数据；
发送模块，用于向至少一个终端发送第一控制信息，所述第一控制信息用于指示所述目标数据对应的协作组的标识和目标终端的标识，所述至少一个终端包括至少一个协作终端和/或至少一个目标终端；
所述发送模块，还用于根据所述第一控制信息向所述至少一个终端发送所述目标数据。
在一种可能的实现方式中，所述第一控制信息包括所述目标数据对应的第一调度控制信息，以及所述第一调度控制信息对应的第一循环冗余校验CRC比特；所述协作组的标识和所述目标终端的标识携带在所述第一CRC比特和/或所述第一调度控制信息中。
在一种可能的实现方式中，所述第一CRC比特的第一部分比特位采用所述协作组的标识进行加扰，所述第一CRC比特的第二部分比特位采用所述目标终端的标识进行加扰。
在一种可能的实现方式中，所述第一CRC比特的至少部分比特位采用所述协作组的标识进行加扰，所述目标终端的标识携带在所述第一调度控制信息中。
在一种可能的实现方式中，所述第一CRC比特的至少部分比特位采用所述目标终端的标识进行加扰，所述协作组的标识携带在所述第一调度控制信息中。
在一种可能的实现方式中，所述目标终端的标识为下述标识中的任意一种标识：所述目标终端在所述协作组中的组内相对标识、所述目标终端对应的比特地图、所述目标终端对应的小区无线网络临时标识C-RNTI、所述目标终端对应的高层标识；其中，所述比特地图包括至少1个比特位，所述比特地图中的每个比特位分别对应所述协作组中的一个终端，所述比特地图的各比特用于指示所述目标终端。
第四方面，本申请实施例提供一种协作传输装置，包括：
接收模块，用于接收网络设备发送的第一控制信息；
处理模块，用于根据所述第一控制信息，确定目标数据对应的协作组的标识和目标终端的标识；
所述接收模块，还用于根据所述第一控制信息，接收所述网络设备发送的所述目标数据。
在一种可能的实现方式中，所述第一控制信息包括所述目标数据对应的第一调度控制信息，以及所述第一调度控制信息对应的第一循环冗余校验CRC比特；所述处理模块具体用于：根据所述第一调度控制信息和/或所述第一CRC比特，确定目标数据对应的协作组的标识和目标终端的标识。
在一种可能的实现方式中，所述处理模块具体用于：采用自身所在的至少一个协作组的标识，以及各自协作组中的至少一个目标终端的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功时采用的协作组的标识作为所述目标数据对应的协作组的标识，并将解扰成功时采用的目标终端的标识作为所述目标数据对应的目标终端的标识。
在一种可能的实现方式中，所述处理模块具体用于：采用自身所在的至少一个协作组的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功的协作组的标识作为所述目标数据对应的协作组的标识；根据所述第一调度控制信息，获取所述目标数据对应的目标终端的标识。
在一种可能的实现方式中，所述处理模块具体用于：采用自身所在的至少一个协作组中的至少一个目标终端的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功的目标终端的标识作为所述目标数据对应的目标终端的标识；根据所述第一调度控制信息，获取所述目标数据对应的协作组的标识。
在一种可能的实现方式中，所述装置还包括发送模块；所述发送模块用于向所述目标终端发送第二控制信息，所述第二控制信息用于指示所述目标数据对应的协作组的标识和所述目标终端的标识；所述发送模块还用于根据所述第二控制信息，向所述目标终端发送 所述目标数据。
在一种可能的实现方式中，所述第二控制信息包括：所述目标数据对应的第二调度控制信息，以及所述第二调度控制信息对应的第二CRC比特；所述协作组的标识和所述目标终端的标识携带在所述第二CRC比特和/或所述第二调度控制信息中。
在一种可能的实现方式中，所述第二CRC比特的第一部分比特位采用所述协作组的标识进行加扰，所述第二CRC比特的第二部分比特位采用所述目标终端的标识进行加扰。
在一种可能的实现方式中，所述第二CRC比特的至少部分比特位采用所述协作组的标识进行加扰，所述目标终端的标识携带在所述第二调度控制信息中。
在一种可能的实现方式中，所述第二CRC比特的至少部分比特位采用所述目标终端的标识进行加扰，所述协作组的标识携带在所述第二调度控制信息中。
在一种可能的实现方式中，所述目标终端的标识为下述标识中的任意一种标识：所述目标终端在所述协作组中的组内相对标识、所述目标终端对应的比特地图、所述目标终端对应的小区无线网络临时标识C-RNTI、所述目标终端对应的高层标识；其中，所述比特地图包括至少1个比特位，所述比特地图中的每个比特位分别对应所述协作组中的一个终端，所述比特地图中的各比特用于指示所述目标终端。
第五方面，本申请实施例提供一种网络设备，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得所述处理器运行所述计算机程序执行如第一方面任一项所述的协作传输方法。
第六方面，本申请实施例提供一种终端，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得所述处理器运行所述计算机程序执行如第二方面任一项所述的协作传输方法。
第七方面，本申请实施例提供一种芯片，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得所述处理器运行所述计算机程序执行如第一方面任一项所述的协作传输方法，或者，如第二方面任一项所述的协作传输方法。
第八方面，本申请实施例提供一种存储介质，所述存储介质包括计算机程序，所述计算机程序被处理器执行时实现如第一方面任一项所述的方法，或者，如第二方面任一项所述的方法。
第九方面，本申请实施例提供一种计算机程序产品，所述计算机程序产品可以由处理器执行，在所述计算机程序产品被处理器执行时，实现如第一方面任一项所述的方法，或者，如第二方面任一项所述的方法。
本申请实施例提供的协作传输方法、装置及设备，该方法包括：网络设备生成目标数据对应的协作组的标识和目标终端的标识，所述目标数据为所述网络设备待传输给所述目标终端的数据；所述网络设备向至少一个终端发送第一控制信息，所述第一控制信息用于指示所述目标数据对应的协作组的标识和目标终端的标识，所述至少一个终端包括至少一个协作终端和/或至少一个目标终端；所述网络设备根据所述第一控制信息向所述至少一个终端发送所述目标数据。由于网络设备在第一控制信息中指示目标数据对应的协作组的标识和目标终端的标识，使得协作终端接收到第一控制信息后，能够根据第一控制信息确定出目标数据是否是基于协作传输的数据，并确定出是否需要将数据转发给哪个终端；目 标终端接收到第一控制信息后，能够根据第一控制信息确定出目标数据是否是基于协作传输的数据，并知道自己随后可能会收到协作终端转发的数据。
附图说明
图1A为本申请实施例所涉及的一种通信系统的架构图；
图1B为本申请实施例提供的一种协作传输场景的示意图；
图1C为本申请实施例提供的另一种协作传输场景的示意图；
图2为本申请实施例中使用接收终端的C-RNTI对DCI的CRC比特进行加扰的过程示意图；
图3为本申请实施例提供的协作传输方法的流程示意图；
图4为本申请实施例提供的第一阶段中协作传输的指示方式的示意图；
图5为本申请实施例提供的第一阶段中协作传输的指示方式的示意图；
图6为本申请实施例提供的第一阶段中协作传输的指示方式的示意图；
图7为本申请实施例提供的第一阶段中协作传输的指示方式的示意图；
图8为本申请实施例提供的第一阶段中协作传输的指示方式的示意图；
图9为本申请实施例提供的协作传输方法的流程示意图；
图10为本申请实施例提供的第二阶段中协作传输的指示方式的示意图；
图11为本申请实施例提供的第二阶段中协作传输的指示方式的示意图；
图12为本申请实施例提供的第二阶段协作传输的指示方式的示意图；
图13为本申请实施例提供的协作传输装置的结构示意图；
图14为本申请实施例提供的协作传输装置的结构示意图；
图15为本申请实施例提供的网络设备的硬件结构示意图；
图16为本申请实施例提供的终端的硬件结构示意图。
具体实施方式
为了便于理解，下面结合图1A、图1B和图1C对本申请实施例适用于的网络架构以及业务场景进行描述。本申请实施例描述的网络架构以及业务场景是为了说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定。随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
图1A为本申请实施例所涉及的一种通信系统的架构图。如图1A所示，该通信系统包括：网络设备和终端。该通信系统可以是5G通信系统或5G后续演进的通信系统，还可以是其他无线通信网络，例如wifi通信系统等，当然，还可以是未来其他通信系统，在此不做限定。
网络设备：可以是一种将终端接入到无线网络的设备。该设备可以是基站，或者各种无线接入点，或者可以是指接入网中在空中接口上通过一个或多个扇区与终端进行通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换，作为终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)网络。基站还可协调对空中接口的属性管理。例如，基站可以是全球移动通讯(global system of mobile communication，GSM)或码分多址(code division multiple access，CDMA)中的基站 (base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)中的基站(nodeB，NB)，还可以是长期演进(long term evolution，LTE)中的演进型基站(evolutional nodeB，eNB或eNodeB)，或者中继站或接入点，或者未来5G网络中的基站gNB等，在此并不限定。
终端：可以是无线终端也可以是有线终端，无线终端可以是指向用户提供语音和/或其他业务数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)等设备。无线终端也可以称为系统、订户单元(subscriber Unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、用户设备(user device or user equipment)，具有网络接入功能的传感器，在此不作限定。
针对图1A所示的通信系统架构，在5G新空口(new radio，NR)系统中，网络设备可以为基站(base station)、收发节点(tx/rx point)、路边单元(road side unit)等。终端可以为手机、车载终端、具有V2V通信能力的车辆等。
用户协作是NR系统主要支持的特性之一，其可以显著提高系统的容量以及网络的覆盖范围，同时可以降低基站端的负载。下面结合图1B和图1C对协作传输场景的数据传输过程进行描述。
图1B为本申请实施例提供的一种协作传输场景的示意图。该场景包括：网络设备和多个终端。其中，多个终端被划分为至少一个协作组。每个协作组中包括目标终端(target user equipment，TUE)和协作终端(cooperation user equipment，CUE)。其中，CUE用于为TUE提供协作传输。如图1B所示，示例了协作组中包括1个TUE和2个CUE的情况。其中，基站与终端之间为接入链路，终端与终端之间为协作链路。
在本申请实施例中，协作链路还可以称为侧行链路、旁链路、端到端(device-to-device，D2D)链路、邻近服务(proximity service，prose)链路、设备间直接通信链路等。
如图1B所示，用户协作场景的数据传输主要包括两个阶段。在第一阶段中，网络设备将目标数据通过接入链路发送给目标终端TUE，以及该TUE对应的协作终端CUE1和CUE2。基站在发送数据时以多播的方式进行发送。在第二阶段中，CUE1和CUE2将接收到的数据通过协作链路转发给TUE。其中，在转发过程中，可以采用不同的转发方式，例如：放大转发、解码转发、压缩转发等。这样，TUE可以将第一阶段从网络设备接收到的数据和第二阶段从CUE1和CUE2接收到的数据联合起来进行解码，从而提高接收性能。
图1C为本申请实施例提供的另一种协作传输场景的示意图。如图1C所示，该场景与 图1B所示场景不同的是，TUE在第一阶段中不接收网络设备发送的数据。例如：TUE在小区覆盖范围之外，或者，TUE的信道质量太差等原因使得TUE无法接收网络设备发送的数据。这样，TUE完全依靠在第二阶段接收CUE1和CUE2转发的数据进行解码。
结合图1B和图1C，在一些应用场景中，TUE处在网络覆盖范围的边缘，或者周围环境对网络服务干扰比较大，导致TUE的网络服务质量比较低，用户体验比较差。而CUE1和CUE2处于网络覆盖范围中心区域，或者其周围网络环境比较好，因此可以帮助TUE进行协作传输。通过引入用户协作传输机制，可以提高系统的容量即网络的覆盖范围，提升网络的服务质量。
本申请实施例中，在用户协作传输中，多个终端可以形成一个协作组。其中，为其他终端提供协作传输的终端称为协作终端，接收其他协作终端提供的协作传输的终端称为目标终端。在一个小区中，可以存着多个不同的协作组。每个协作组中包括的协作终端的数量可以相同或者不同。每个协作组中可以包括一个或者多个目标终端，以及一个或者多个协作终端。对于某个终端而言，其可以是以自身为中心的协作组中的目标终端，同时，还可以是其他一个或者多个协作组中的协作终端。
本申请实施例中，协作终端和目标终端之间可以在带内(in-band)进行协作传输，即CUE1(或CUE2)和TUE在网络设备当前所服务的频带内进行协作传输。协作终端和目标终端也可以在带外(out-of-band)进行协作传输，即CUE1(或CUE2)和TUE不在网络设备当前所服务的频带内进行协作传输，例如在非授权频度进行协作传输。本申请实施例对此不作具体限定。
需要说明的是，图1B和图1C所示的应用场景只是举例说明，并非限定，实际应用场景中还可以包括更多的网络设备和终端。
网络设备与终端之间进行下行数据传输的过程如下：网络设备为终端分配下行传输资源，并将资源分配信息携带在下行控制信息(downlink control information，DCI)中，通过物理下行控制信道(physical downlink control channel，PDCCH)发送给终端。并且，网络设备在上述分配的传输资源上填充数据，将数据通过物理下行共享信道(Physical Downlink Shared Channel，PDSCH)发送给终端。终端根据接收到的DCI，确定需要在PDSCH信道的哪些传输资源上接收数据。
终端对PDCCH的接收采用盲检测的方式。终端可以监听所有的PDCCH，根据可能所使用的DCI的大小，解调所有可能属于自身的PDCCH，搜索属于自身的DCI。也就是说，终端可以根据所需要监听的DCI的格式，来尝试解码PDCCH候选位置(PDCCH candidates)集合中的PDCCH，该集合可以被称为所述终端的搜索空间(search space)。搜索空间可以分为公共搜索空间(common search space)和用户设备(user equipment,UE)特定的搜索空间(UE-specific search space)。公共搜索空间用于传输与寻呼paging、广播控制信道(broadcast control channel,BCCH)等相关的小区级别的公共控制信息，用户设备特定的搜索空间用于传输与下行数据、上行数据等相关的UE级别的控制信息。
进一步的，网络设备发送PDCCH时，在PDCCH中携带接收终端的标识，终端在盲检测过程中，可以使用自身的标识对PDCCH进行盲检测，以确定出哪些PDCCH是需要自己接收的。下面以NR系统的PDCCH为例，描述PDCCH中如何携带接收终端的标识。
NR系统中，网络设备在PDCCH中承载DCI。DCI里包含了被调度的下行传输的相关信息。同时，网络设备会在DCI的比特后面添加循环冗余校验(cyclic redundancy check，CRC)比特。
终端在接收PDCCH时，可以根据解码所得的CRC比特来判断对应的DCI是否正确解码。具体地，假设DCI包含的比特数为A，记为a 0,a 1,…,a A-1，网络设备根据DCI包含的比特来生成长度为L的CRC比特，记为p 0,p 1,…,p L-1。DCI和CRC级联之后得到b 0,b 1,…,b K-1，其中b k＝a k,k＝0,1,…,A-1，并且b k＝p k-A,k＝A,A+1,…,A+L-1，并且K＝A+L。
在NR系统中，CRC比特的长度为24，即L＝24。进一步地，网络设备可以使用接收终端的标识，例如：接收终端的小区无线临时标识(cell radio network temporary identifier，C-RNTI)对前述CRC比特进行加扰。
图2为本申请实施例中使用接收终端的C-RNTI对DCI的CRC比特进行加扰的过程示意图。如图3所示，C-RNTI长度为16比特，记为x 0,x 1,…,x 15。加扰后的比特记为c 0,c 1,…,c K-1，则c k和b k的关系为：c k＝b k,k＝0,1,…,A+7，并且c k＝(b k+x k-A-8),k＝A+8,A+9,…,A+23。根据图2可以看出，所述加扰操作就是将C-RNTI的16比特和CRC比特中的后16比特的对应比特位上的数值进行模2加法。通过使用接收终端的C-RNTI对DCI的CRC比特进行加扰，网络设备在PDCCH中隐式地携带了接收终端的C-RNTI。
终端在接收到PDCCH并且解码获得DCI以及对应地CRC比特后，使用自身的C-RNTI对CRC比特进行解扰，可以知道所述PDCCH的目标接收终端是否是自己。如果是自己，则进一步根据所述DCI的指示信息从PDSCH接收数据；如果不是自己，则不会从PDSCH接收数据。
对于侧行链路传输，和下行传输类似，发送终端会通过物理侧行控制信道(physical sidelink control channel,PSCCH)发送侧行控制信息(sidelink control information，SCI)，并通过物理侧行共享信道(phsyical sidelink shared channel，PSSCH)发送数据。其中，所述SCI指示了PSSCH上传输的数据所使用的传输资源等相关信息。
根据上述的下行数据传输过程可知，网络设备使用接收终端的C-RNTI来对PDCCH中的DCI的CRC比特进行加扰，以指示PDSCH传输的数据是发送给哪个终端的。类似的，侧行链路传输中，发送终端使用接收终端的标识(例如UE的C-RNTI)来对PSCCH中的SCI的CRC比特进行加扰，以指示PSSCH传输的数据是发送给哪个终端的。
将上述的数据传输方式应用于如图1B和图1C所示的用户协作传输中时，网络设备向协作终端发送数据时，在PDCCH中携带协作终端的C-RNTI，则协作终端无法区分该数据是发送给自己的数据，还是需要转发给目标终端的数据，并且也不知道该转发给哪个终端。类似的，网络设备向目标终端发送数据时，在PDCCH中携带目标终端的C-RNTI，则目标终端无法知道该数据是否是基于协作传输的数据。协作终端向目标终端发送数据时，在PSCCH中携带目标终端的C-RNTI，则目标终端也无法知道该数据是否是基于协作传输的数据。
为了解决上述问题中的至少一个，本申请实施例提供一种协作传输方法，网络设备在发送控制信息时，在控制信息中携带协作组的标识以及目标终端的标识，从而协作终端和目标终端可以高效的识别出数据是否是基于协作传输的数据。
下面通过具体实施例对本申请的技术方案进行详细说明。需要说明的是，下面这几个 具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例中不再赘述。
图3为本申请实施例提供的协作传输方法的流程示意图。如图3所示，本实施例的方法包括：
S301：网络设备生成目标数据对应的协作组的标识和目标终端的标识。
本申请实施例的适用场景为基于协作传输的场景。协作传输中，目标终端和其对应的一个或者多个协作终端形成一个协作组。
本申请实施例中，目标数据是指网络设备需要传输给目标终端的数据。在协作传输中，网络设备可以将该数据直接发送给目标终端，还可以将该数据发送给目标终端所在协作组中的至少一个协作终端，由协作终端接收数据后转发给目标终端。网络设备需要向某个目标终端传输数据时，首先确定出该目标终端所在协作组的标识以及目标终端的标识。
其中，协作组的标识可以用于指示目标数据为基于协作传输的数据，并指示需要传输给哪个协作组。目标终端的标识用于指示目标数据需要发送给该协作组中的哪个目标终端。
示例性的，网络设备会事先为每个协作组分配协作组的标识(cooperation group id，CGID)，网络设备还会将协作组的标识通知给协作组内的所有终端。其中，协作组的标识至少对于一个小区(cell)而言是唯一的。假设协作组的标识的长度为16比特，示例性的，协作组的组标识可以为1111111100000000。当然，协作组的标识的长度还可以为其他长度，本实施例对此不作限定。
网络设备还会事先为协作组中的每个终端分配一个标识，用于区分协作组内的各个终端。各终端的标识至少对于一个协作组而言是唯一的。本申请实施例中，目标终端的标识可以为下述标识中的任意一种标识：目标终端在协作组中的组内相对标识、目标终端对应的比特地图、目标终端对应的C-RNTI、目标终端对应的除C-RNTI外的物理层标识、目标终端对应的高层标识。也就是说，网络设备可以采用下述方式中的任一种来生成目标终端的标识。
(1)采用目标终端的组内相对标识。
网络设备为协作组里的各个终端分配一个组内相对标识。假设组内相对标识长度为8比特。示例性的，协作组中包含7个CUE以及1个TUE，7个CUE的组内相对标识依次为00000001,00000010,00000011,00000100,00000101,00000110,00000111。TUE的组内相对标识为00001000。当然，终端的组内相对标识的长度还可以为其他长度，本实施例对此不作限定。
因此，当网络设备需要向该协作组中的目标终端发送数据时，采用目标终端的组内相对标识00001000才指示目标数据对应的目标终端。
(2)采用目标终端对应的比特地图。
其中，所述比特地图包括至少1个比特位，所述比特地图中的每个比特位分别对应所述协作组中的一个终端，所述比特地图中的各比特用于指示所述目标终端。
一种可能的方式中，比特地图的每一位比特对应协作组的某一个CUE或者TUE。假设比特地图的长度为8，协作组中包括5个CUE以及3个TUE，分别记为CUE1，CUE2，CUE3，CUE4，CUE5，TUE1，TUE2，TUE3。将比特地图的8个比特从左至右依次和前述8个UE一一对应。对应位置上的比特为1，则指示该位置对应的UE；对应位置上的比特为0，则不 指示该位置对应的UE。
示例性的，假设网络设备待发送的目标数据对应的目标终端为TUE1和TUE3，则可以采用比特地图00000101来指示目标数据对应的目标终端。假设网络设备目标数据对应的目标终端为TUE2和TUE3，则可以采用比特地图00000110来指示目标数据对应的目标终端。
需要说明的是，该方式中，当比特地图的长度为8时，最多支持协作组中包含8个UE的情况。当协作组中包括的UE数量更多时，可以采用具有更多比特位的比特地图。本申请实施例对于比特地图的长度不作限定。上述举例仅为示例性说明。
另一种可能的方式中，比特地图中的每个比特对应协作组中的每个目标终端。假设比特地图的长度为8，协作组中有5个CUE以及5个TUE，分别记为CUE1，CUE2，CUE3，CUE4，CUE5，TUE1，TUE2，TUE3，TUE4，TUE5。将比特地图的8个比特从左至右依次和前述5个TUE一一对应。如果TUE个数小于8，则剩余的比特设置为0。
示例性的，假设网络设备目标数据对应的目标终端为TUE1和TUE5，则可以采用比特地图10001000来指示目标数据对应的目标终端。假设网络设备目标数据对应的目标终端为TUE2和TUE3，则可以采用比特地图01100000来指示目标数据对应的目标终端。
需要说明的是，该方式中，当比特地图的长度为8时，最多支持协作组中包含8个TUE的情况。当协作组中包括的TUE数量更多时，可以采用具有更多比特位的比特地图。本申请实施例对于比特地图的长度不作限定。上述举例仅为示例性说明。
(3)采用目标终端的C-RNTI。
其中，C-RNTI是由网络设备分配给终端的一个动态标识，唯一标识了一个小区下的终端，只有处于连接态的终端，C-RNTI才有效。
(4)采用目标终端的除C-RNTI之外的物理层标识
基站除了给UE分配C-RNTI外，还可能为该UE分配和前述C-RNTI不同的物理层标识，并且该物理层标识在一个小区中也是唯一的。
(4)采用目标终端的高层标识。
示例性的，采用目标终端在MAC层或者RRC层的标识，作为目标终端的标识。
S302：网络设备向至少一个终端发送第一控制信息，所述第一控制信息用于指示所述目标数据对应的协作组的标识和目标终端的标识，所述至少一个终端包括至少一个协作终端和/或至少一个目标终端。
S303：协作终端接收网络设备发送的第一控制信息，并根据所述第一控制信息，确定目标数据对应的协作组的标识和目标终端的标识。
S304：网络设备根据所述第一控制信息向所述至少一个终端发送所述目标数据。
S305：协作终端根据所述第一控制信息，接收所述网络设备发送的所述目标数据。
其中，第一控制信息为用于指示网络设备在PDSCH信道传输的目标数据的调度相关信息，例如：数据传输所占用的时频资源、调制编码方式(modulation and coding scheme，MCS)等。网络设备可以通过PDCCH信道向至少一个终端发送第一控制信息。
一种可能的场景中，网络设备向协作组中的一个或者多个协作终端以及一个或者多个目标终端发送第一控制信息，对应图1B所示的协作传输场景。另一种可能的场景中，网络设备向协作组中的一个或者多个协作终端发送第一控制信息，对应图1C所示的协作传输场景。
本申请实施例中，网络设备向终端发送的第一控制信息还用于指示目标数据对应的协作组的标识和目标终端的标识。示例性的，网络设备可以在第一控制信息中显式携带目标数据对应的协作组的标识和目标终端的标识。网络设备还可以在第一控制信息中隐式携带目标数据对应的协作组的标识和目标终端的标识。网络设备还可以在第一控制信息中采用显式和隐式相结合的方式携带目标数据对应的协作组的标识和目标终端的标识。
需要说明的是，网络设备在第一控制信息中指示协作组的标识和目标终端的标识的指示方式，可以是事先与终端约定好的，也可以是由网络设备确定好后通知给终端的。
网络设备通过PDCCH信道发送第一控制信息之后，网络设备还会根据第一控制信息，在PDSCH信道向协作组中的目标终端和协作终端发送目标数据。
相应的，协作终端和/或目标终端通过PDCCH信道接收网络设备发送的第一控制信息，并根据第一控制信息，确定目标数据对应的协作组的标识和目标终端的标识。从而，协作终端可以确定出目标数据是否是基于协作传输的数据，并确定出是否需要转发给其他终端，目标终端可以确定出目标数据是否是基于协作传输的数据，并知道自己随后可能会收到协作终端转发的数据。随后，协作终端和/或目标终端根据第一控制信息，通过PDSCH信道接收该目标数据。
本实施例提供的协作传输方法，网络设备生成目标数据对应的协作组的标识和目标终端的标识，并在第一控制信息中指示目标数据对应的协作组的标识和目标终端的标识，使得协作终端接收到第一控制信息后，能够根据第一控制信息确定出目标数据是否是基于协作传输的数据，并确定出是否需要将数据转发给哪个终端；目标终端接收到第一控制信息后，能够根据第一控制信息确定出目标数据是否是基于协作传输的数据，并知道自己随后可能会收到协作终端转发的数据。
可选的，第一控制信息包括目标数据对应的DCI以及DCI对应的CRC比特。网络设备将目标数据对应的协作组的标识和目标终端的标识携带在DCI和/或CRC比特中。相应的，协作终端根据DCI和/或CRC比特，确定目标数据对应的协作组的标识和目标终端的标识。示例性的，网络设备可以通过以下几种可能的实施方式，在第一控制信息中指示目标数据对应的协作组的标识和目标终端的标识。
第一种可能的实施方式中，所述CRC比特的第一部分比特位采用所述协作组的标识进行加扰，所述CRC比特的第二部分比特位采用所述目标终端的标识进行加扰。
示例性的，假设CRC比特的长度为24比特，协作组的标识的长度为16比特，目标终端的标识的长度为8比特。则可以使用协作组的标识对CRC比特的前16位比特进行加扰，并使用目标终端的标识对CRC比特的后8位比特进行加扰。或者，使用目标终端的标识对CRC比特的前8位比特进行加扰，并使用协作组的标识对CRC比特的后16位比特进行加扰。
示例性的，假设CRC比特的长度为24比特，协作组的标识的长度为8比特，目标终端的标识的长度为8比特。则可以使用协作组的标识对CRC比特的前8位比特进行加扰，并使用目标终端的标识对CRC比特的后8位比特进行加扰，对CRC比特的中间8位比特不进行加扰。或者，使用协作组的标识对CRC比特的前8位比特进行加扰，并使用目标终端的标识对CRC比特的中间8位比特进行加扰，对CRC比特的后8位比特不进行加扰。或者， 使用协作组的标识对CRC比特的中间8位比特进行加扰，并使用目标终端的标识对CRC比特的后8位比特进行加扰，对CRC比特的前8位比特不进行加扰。
其中，网络设备采用的加扰方式可以为现有的加扰方式，例如：对应比特位上的数值进行模2加法。当然，还可以采用其他的加扰方式。网络设备采用的加扰方式以及加扰比特位可以是与终端事先约定好的，也可以是由网络设备确定并通知给终端的。
该实施方式中，协作组的标识可以为CGID。目标终端的标识可以为下述中的任意一种：目标终端在协作组中的组内相对标识、目标终端对应的比特地图、目标终端对应的C-RNTI、目标终端对应的除C-RNTI之外的物理层标识、目标终端对应的高层标识。下面结合图4和图5进行举例说明。
图4为本申请实施例提供的第一阶段中协作传输的指示方式的示意图。如图4所示，假设协作组的标识的长度为16比特，协作组的组标识为1111111100000000。目标终端的标识采用组内相对标识，组内相对标识的长度为8比特。假设协作组中包含7个CUE以及1个TUE，7个CUE的组内相对标识依次为00000001,00000010,00000011,00000100,00000101,00000110,00000111。TUE的组内相对标识为00001000。
网络设备确定DCI比特后，根据DCI比特生成CRC比特。假设CRC比特的长度为24比特。参见图4，网络设备采用协作组的标识(1111111100000000)对CRC比特的后16位比特进行加扰，并采用TUE的组内相对标识(00001000)对CRC比特的前8位比特进行加扰。
图5为本申请实施例提供的第一阶段中协作传输的指示方式的示意图。如图5所示，假设协作组的标识的长度为16比特，协作组的组标识为1111111100000000。目标终端的标识采用比特地图。比特地图的长度为8比特，比特地图的每一位比特对应协作组的某一个CUE或者TUE。例如，协作组中包括5个CUE以及3个TUE，分别记为CUE1，CUE2，CUE3，CUE4，CUE5，TUE1，TUE2，TUE3。网络设备待发送的目标数据对应的目标终端为TUE1和TUE3，则可以采用比特地图00000101来指示目标数据对应的目标终端。
网络设备确定DCI比特后，根据DCI比特生成CRC比特。假设CRC比特的长度为24比特。参见图5，网络设备采用协作组的标识(1111111100000000)对CRC比特的后16位比特进行加扰，并采用比特地图(00001000)对CRC比特的前8位比特进行加扰。
该实施方式中，协作终端对PDCCH的接收采用盲检测的方式。示例性的，协作终端接收到第一控制信息后，对第一控制信息进行解码，得到DCI比特和CRC比特。协作终端采用自身所在的至少一个协作组的标识，以及各自协作组中的至少一个目标终端的标识对CRC比特的至少部分比特位进行解扰。例如：与图4对应的，协作终端使用协作组的标识对CRC比特的后16位比特进行解扰，并使用目标终端的组内相对标识对CRC比特的前8位比特进行解扰；或者，与图5对应的，终端使用协作组的标识对CRC比特的后16位比特进行解扰，并使用目标终端对应的比特地图对CRC比特的前8位比特进行解扰。协作终端将解扰成功时采用的协作组的标识作为目标数据对应的协作组的标识，并将解扰成功时采用的目标终端的标识作为目标数据对应的目标终端的标识。
可以理解的，对于某个终端而言，其可能同时位于不同的协作组中。因此，终端接收到第一控制信息后，可能需要对第一控制信息进行多次解扰。例如：终端A同时位于协助组1、协作组2和协作组3中，并且，终端A在协作组1中为目标终端，终端A在协作组 2和协作组3中为协作终端。示例性的，终端A先使用协作组1的标识和其自身的标识对CRC比特进行第一次解扰，若第一次解扰成功，则终端A确定目标数据为发送给自身的数据，并且不需要转发。若第一次解扰失败，则终端A使用协作组2的标识和协作组2中的目标终端的标识对CRC比特进行第二次解扰。若第二次解扰成功，则终端A确定目标数据是基于协作传输的数据，且需要转发给协作组2中的目标终端。若第二次解扰失败，则终端使用协作组3的标识和协作组3中的目标终端的标识对CRC比特进行第三次解扰。若第三次解扰成功，则终端A确定目标数据是基于协作传输的数据，且需要转发给协作组3中的目标终端。
该实施方式中，协作终端接收到网络设备发送的第一控制信息后，会获得其隐式指示的协作组的标识以及目标终端的标识。通过协作组的标识，协作终端知道PDCCH调度的目标数据是基于协作传输的数据；通过目标终端的标识，协作终端知道在协作传输的第二阶段需要将从网络设备接收到的目标数据转发给哪个目标终端。类似地，目标终端接收到网络设备发送的第一控制信息后，会获得其隐式指示的协作组的标识以及目标终端的标识。通过协作组的标识，目标终端知道PDCCH调度的目标数据是基于协作传输的数据；通过目标终端的标识，目标终端知道该PDCCH调度的数据传输是给自己的，并且自己随后可能会收到协作终端转发的数据。
该实施方式中，可以在不增加DCI的比特数的前提下，隐式地指示目标终端的标识以及协作组的标识，保证了协作传输的有效性，并提高了资源的利用率。
第二种可能的实施方式中，所述CRC比特的至少部分比特位采用所述协作组的标识进行加扰，所述目标终端的标识携带在所述第一调度控制信息中。
该实施方式中，网络设备使用协作组的标识对CRC比特的部分或者全部比特进行加扰。具体对哪些比特进行加扰取决于协作组的标识的长度和CRC比特的长度。示例性的，假设CRC比特的长度为24，协作组的标识的长度为24，则使用协作组的标识对CRC比特的所有比特位进行加扰。假设CRC比特的长度为24，协作组的标识的长度为32，则使用协作组的标识的前24位比特或者后24位比特对CRC比特的所有比特位进行加扰或者中间24位比特对CRC比特的所有比特位进行加扰。假设CRC比特的长度为24，协作组的标识的长度为16，则使用协作组的标识对CRC比特的前16位比特或者后16位比特或者中间16位比特进行加扰。
另外，网络设备将目标终端的标识显式携带在DCI中。示例性的，可以在DCI中新增一个信息域来指示目标终端的标识，也可以复用DCI中已有的信息域来指示目标终端的标识，本实施例对此不作限定。其中，该实施方式中，目标终端的标识也可以为下述中的任意一种：目标终端在协作组中的组内相对标识、目标终端对应的比特地图、目标终端对应的C-RNTI、目标终端对应的除C-RNTI之外的物理层标识、目标终端对应的高层标识。
图6为本申请实施例提供的第一阶段中协作传输的指示方式的示意图。图6中示出了采用协作组的标识对CRC比特的后16位比特位进行加扰，将目标终端的标识显式携带在DCI的某个信息域中的情况。
该实施方式中，协作终端对PDCCH的接收采用盲检测的方式。示例性的，协作终端接收到第一控制信息后，对第一控制信息进行解码，得到DCI比特和CRC比特。协作终端采 用自身所在的至少一个协作组的标识对CRC比特的至少部分比特位进行解扰，例如：与图6对应的，采用自身所在的至少一个协作组的标识对CRC比特的后16位比特进行解扰，将解扰成功的协作组的标识作为目标数据对应的协作组的标识。进一步的，协作终端根据DCI比特，可以获取目标数据对应的目标终端的标识。
可以理解的，对于某个协作终端而言，其可能同时位于不同的协作组中。例如：终端A同时位于协助组1、协作组2和协作组3中。终端A先使用协作组1的标识对CRC比特进行第一次解扰，若第一次解扰成功，则终端A确定目标数据对应的目标终端为协作组1中的终端。若第一次解扰失败，则终端A使用协作组2的标识对CRC比特进行第二次解扰。若第二次解扰成功，则终端A确定目标数据对应的目标终端为协作组2中的终端。若第二次解扰失败，则终端使用协作组3的标识对CRC比特进行第三次解扰。若第三次解扰成功，则终端A确定目标数据对应的目标终端为协作组3中的终端。进一步的，终端A确定出目标数据对应的协作组之后，还需要根据DCI比特确定出目标终端的标识。假设终端A通过对CRC比特进行解扰，确定出目标数据对应的协作组为协作组2，通过DCI比特确定目标终端的标识为00000100，则终端A最终确定出目标数据对应的目标终端为协作组2中标识为00000100的终端。
该实施方式中，协作终端接收到网络设备发送的第一控制信息后，会获得其指示的协作组的标识以及目标终端的标识。通过协作组的标识，协作终端知道PDCCH调度的目标数据是基于协作传输的数据；通过目标终端的标识，协作终端知道在协作传输的第二阶段需要将从网络设备接收到的目标数据转发给哪个目标终端。类似地，目标终端接收到网络设备发送的第一控制信息后，会获得其指示的协作组的标识以及目标终端的标识。通过协作组的标识，目标终端知道PDCCH调度的目标数据是基于协作传输的数据；通过目标终端的标识，目标终端知道该PDCCH调度的数据传输是给自己的，并且自己随后可能会收到协作终端转发的数据。
该实施方式，可以在不增加DCI所含比特数或者仅增加少量比特的前提下，指示协作组的标识和目标终端的标识，保证了协作传输的有效性，并提高了资源的利用率。
第三种可能的实施方式中，所述CRC比特的至少部分比特位采用所述目标终端的标识进行加扰，所述协作组的标识携带在所述第一调度控制信息中。
该实施方式中，网络设备使用目标终端的标识对CRC比特的部分或者全部比特进行加扰。具体对哪些比特进行加扰取决于目标终端的标识的长度和CRC比特的长度。示例性的，假设CRC比特的长度为24，目标终端的标识的长度为24，则使用目标终端的标识对CRC比特的所有比特位进行加扰。假设CRC比特的长度为24，目标终端的标识的长度为32，则使用目标终端的标识的前24位比特或者后24位比特或者中间24位比特对CRC比特的所有比特位进行加扰。假设CRC比特的长度为24，目标终端的标识的长度为16，则使用目标终端的标识对CRC比特的前16位比特或者后16位比特或者中间16位比特进行加扰。其中，目标终端的标识也可以为下述中的任意一种：目标终端在协作组中的组内相对标识、目标终端对应的比特地图、目标终端对应的C-RNTI、目标终端对应的除C-RNTI之外的物理层标识、目标终端对应的高层标识。
另外，网络设备将协作组的标识显式携带在DCI中。示例性的，可以在DCI中新增一 个信息域来指示协作组的标识，也可以复用DCI中已有的信息域来指示协作组的标识，本实施例对此不作限定。
图7为本申请实施例提供的第一阶段中协作传输的指示方式的示意图。图7中示出了采用目标终端的标识对CRC比特的前8位比特位进行加扰，将协作组的标识显式携带在DCI的某个信息域中的情况。
该实施方式中，协作终端对PDCCH的接收采用盲检测的方式。示例性的，协作终端接收到第一控制信息后，对第一控制信息进行解码，得到DCI比特和CRC比特。协作终端采用自身所在的至少一个协作组中的至少一个目标终端的标识对CRC比特的至少部分比特位进行解扰，例如：与图7对应的，采用自身所在每个协作组中的各目标终端的标识对CRC比特的后16位比特进行解扰，将解扰成功的目标终端的标识作为目标数据对应的目标终端的标识。进一步的，协作终端根据DCI比特，可以获取目标数据对应的协作组的标识。
可以理解的，对于协作终端而言，其可能同时位于多个协作组中，对于每个协作组而言，其中可能包含多个目标终端。例如：终端A位于协作组1和协作组2，其中，协作组1中的目标终端为TUE1和TUE2，协作组2中的目标终端为TUE1。协作终端先使用协作组1中的TUE1的标识对CRC比特进行第一次解扰，若第一次解扰成功，则终端A确定目标数据对应的目标终端为协作组1中的TUE1。若第一次解扰失败，则终端A使用协作组1中的TUE2的标识对CRC比特进行第二次解扰。若第二次解扰成功，则终端A确定目标数据对应的目标终端为协作组1中的TUE2。若第二次解扰失败，则终端A使用协作组2中的TUE1的标识对CRC比特进行第三次解扰。若第三次解扰成功，则终端A确定目标数据对应的目标终端为协作组2中的TUE1。
可以理解的，上述两个协作组中的目标终端的标识有可能是相同的，例如：协作组2中的TUE1标识与协作组1中的TUE1的标识相同，或者，协助组2中的TUE1的标识与协作组1中的TUE2的标识相同。因此，终端A在确定出目标数据对应的目标终端的标识之后，还需要根据DCI比特确定出目标数据对应的协作组的标识。假设终端A通过对CRC比特进行解扰确定出的目标数据对应的目标终端的标识为00000100，通过DCI比特确定出目标数据对应的协作组为协作组1,则终端最终确定出目标数据对应的目标终端为协作组1中标识为00000100的终端。
该实施方式中，协作终端接收到网络设备发送的第一控制信息后，会获得其指示的协作组的标识以及目标终端的标识。通过协作组的标识，协作终端知道PDCCH调度的目标数据是基于协作传输的数据；通过目标终端的标识，协作终端知道在协作传输的第二阶段需要将从网络设备接收到的目标数据转发给哪个目标终端。类似地，目标终端接收到网络设备发送的第一控制信息后，会获得其指示的协作组的标识以及目标终端的标识。通过协作组的标识，目标终端知道PDCCH调度的目标数据是基于协作传输的数据；通过目标终端的标识，目标终端知道该PDCCH调度的数据传输是给自己的，并且自己随后可能会收到协作终端转发的数据。
该实施方式，可以在不增加DCI所含比特数或者仅增加少量比特的前提下，指示协作组的标识和目标终端的标识，保证了协作传输的有效性，并提高了资源的利用率。
第四种可能的实施方式中，目标终端的标识隐式携带在CRC比特中。
某些场景中，协作组中仅包括一个目标终端。该情况下，网络设备可以不用为协作组分配协作组的标识，而直接采用目标终端的标识来标识一个协作组。因此，网络设备可以不在第一控制信息中显式或者隐式的携带协作组的标识，而直接将目标终端的标识隐式携带在CRC比特中。示例性的，网络设备使用目标终端的标识对CRC比特的至少部分比特位进行加扰。该实施方式中，目标终端的标识也可以为下述中的任意一种：目标终端在协作组中的组内相对标识、目标终端对应的比特地图、目标终端对应的C-RNTI、目标终端对应的除C-RNTI之外的物理层标识、目标终端对应的高层标识。
图8为本申请实施例提供的第一阶段中协作传输的指示方式的示意图。假设目标终端的标识的长度为8，图8中示出了采用目标终端的标识对CRC比特的前8位比特位进行加扰的情况。当然，还可以采用目标终端的标识对CRC比特的后8位比特位或者中间8位比特位进行加扰。
该实施方式中，协作终端对PDCCH的接收采用盲检测的方式。示例性的，协作终端接收到第一控制信息后，对第一控制信息进行解码，得到DCI比特和CRC比特。协作终端采用自身所在的至少一个协作组中的目标终端的标识对CRC比特的至少部分比特位进行解扰，例如：与图8对应的，采用自身所在至少一个协作组中的目标终端的标识对CRC比特的前8位比特进行解扰，将解扰成功的目标终端的标识作为目标数据对应的目标终端的标识。
可以理解的，对于某个协作终端而言，其可能同时位于不同的协作组中。例如：终端A同时位于协助组1、协作组2和协作组3中。示例性的，终端A先使用协作组1中的目标终端的标识对CRC比特进行第一次解扰，若第一次解扰成功，则终端A确定目标数据对应的目标终端为协作组1中的目标终端。若第一次解扰失败，则终端A使用协作组2中的目标终端的标识对CRC比特进行第二次解扰。若第二次解扰成功，则终端A确定目标数据对应的目标终端为协作组2中目标终端。若第二次解扰失败，则终端使用协作组3中的目标终端的标识对CRC比特进行第三次解扰。若第三次解扰成功，则终端A确定目标数据对应的目标终端为协作组3中的目标终端。
该实施方式中，协作终端接收到网络设备发送的第一控制信息后，会获得其隐式指示的目标终端的标识。通过目标终端的标识，协作终端知道在协作传输的第二阶段需要将从网络设备接收到的目标数据转发给哪个目标终端。类似地，目标终端接收到网络设备发送的第一控制信息后，会获得其隐式指示的目标终端的标识。通过目标终端的标识，目标终端知道该PDCCH调度的数据传输是给自己的，并且自己随后可能会收到协作终端转发的数据。
该实施方式，可以在不增加DCI所含比特数的前提下，指示目标终端的标识，保证了协作传输的有效性，并提高了资源的利用率。
上述各种可能的实施方式中，协作终端均需要事先知道其所处的协作组的标识以及该协作组中的一个或者多个目标终端的标识。示例性的，网络设备可以通过无线资源控制(radio resource control，RRC)信令来通知协作终端，或者，网络设备可以通过协作组的组信息来通知协作终端，或者，还可以是在协作组建立的过程中，由网络设备或者目标终端通过相关控制信令通知协作终端。这样，协作终端在接收到第一控制信息时，即使其中的DCI对应的CRC比特并不是使用自身的标识加扰的，但是由于其是使用协作组中的 目标终端的标识进行加扰的，协作终端也会接收该第一控制信息，并根据第一控制信息接收对应的目标数据。
需要说明的是，图3至图8所示的实施例中，S303和S305是站在协作终端侧进行描述的。可以理解的，目标终端接收到网络设备发送的第一控制信息后的处理过程与协作终端类似，此处不再赘述。
图9为本申请实施例提供的协作传输方法的流程示意图。如图9所示，本实施例的方法，包括：
S901：网络设备生成目标数据对应的协作组的标识和目标终端的标识。
S902：网络设备向至少一个终端发送第一控制信息，所述第一控制信息用于指示所述目标数据对应的协作组的标识和目标终端的标识，所述至少一个终端包括至少一个协作终端和/或至少一个目标终端。
S903：协作终端和目标终端接收网络设备发送的第一控制信息，并根据所述第一控制信息，确定目标数据对应的协作组的标识和目标终端的标识。
S904：网络设备根据所述第一控制信息向所述至少一个终端发送所述目标数据。
S905：协作终端和目标终端根据所述第一控制信息，接收网络设备发送的所述目标数据。
本实施例中，S901至S905描述的是协作传输中第一阶段的传输过程，其具体实施方式与图3所示实施例中的S301至S305类似，此处不再赘述。下面结合S906至S909对协作传输中的第二阶段的传输过程进行描述。
S906：协作终端向目标终端发送第二控制信息，所述第二控制信息用于指示所述目标数据对应的协作组的标识和所述目标终端的标识。
S907：目标终端接收协作终端发送的第二控制信息，并根据所述第二控制信息，确定目标数据对应的协作组的标识和目标终端的标识。
S908：协作终端根据所述第二控制信息，向目标终端发送所述目标数据。
S909：目标终端根据所述第二控制信息，接收协作终端发送的所述目标数据，并对从网络设备接收的目标数据和从协作终端接收的目标数据进行联合解码。
本实施例中，在第二阶段的传输中，协作终端通过PSCCH信道承载第二控制信息，并在第二控制信息中指示目标数据对应的协作组的标识和目标终端的标识。其中，第二控制信息还用于指示协作终端在PSSCH信道传输的目标数据的调度相关信息，例如：数据传输所占用的时频资源、MCS等。其中，第二阶段传输所占用的时频资源可以是由网络设备确定并通知给协作终端的，还可以是协作终端从自身资源池中自主确定的。
本申请实施例中，协作终端向目标终端发送的第二控制信息还用于指示目标数据对应的协作组的标识和目标终端的标识。示例性的，协作终端可以在第二控制信息中显式携带目标数据对应的协作组的标识和目标终端的标识。协作终端还可以在第二控制信息中隐式携带目标数据对应的协作组的标识和目标终端的标识。协作终端还可以在第二控制信息中采用显式和隐式相结合的方式携带目标数据对应的协作组的标识和目标终端的标识。
需要说明的是，协作终端在第二控制信息中指示协作组的标识和目标终端的标识的指示方式，可以是事先与目标终端约定好的，也可以是由网络设备确定好后通知给协作终端 和目标终端的。
协作终端通过PSCCH信道发送第二控制信息后，还会根据第二控制信息，通过PSSCH信道向目标终端发送目标数据。
相应的，目标终端通过PSCCH信道接收第二控制信息，并根据第二控制信息，确定出目标数据对应的协作组的标识和目标终端的标识。从而，目标终端可以确定出随后通过PSSCH信道接收到的目标数据是基于协作传输的数据。因此，目标终端根据第二控制信息，通过PSSCH信道接收该目标数据，并对从网络设备接收到的目标数据以及从协作终端接收到的目标数据进行联合解码，从而提高接收性能。
可选的，第二控制信息包括目标数据对应的SCI以及所述SCI对应的CRC比特。协作终端将目标数据对应的协作组的标识和目标终端的标识携带在SCI和/或CRC比特中。相应的，目标终端根据SCI和/或CRC比特，确定目标数据对应的协作组的标识和目标终端的标识。下面结合图10至图12对几种可能的实施方式进行描述。
一种可能的实施方式中，CRC比特的第一部分比特位采用所述协作组的标识进行加扰，所述CRC比特的第二部分比特位采用所述目标终端的标识进行加扰。图10为本申请实施例提供的第二阶段中协作传输的指示方式的示意图。如图10所示，假设协作组的标识的长度为16比特，目标终端的标识的长度为8比特，CRC比特的长度为24比特。协作终端采用协作组的标识对CRC比特的后16位比特进行加扰，并采用目标终端的标识对CRC比特的前8位比特进行加扰。
一种可能的实施方式中，CRC比特的至少部分比特位采用所述协作组的标识进行加扰，所述目标终端的标识携带在SCI中。图11为本申请实施例提供的第二阶段中协作传输的指示方式的示意图。假设CRC比特的长度为24，协作组的标识的长度为16。图11示出了将目标终端的标识显式携带在SCI的某个信息域中，并使用协作组的标识对CRC比特的后16位比特进行加扰的情况。
一种可能的实施方式中，CRC比特的至少部分比特位采用所述目标终端的标识进行加扰，所述协作组的标识携带在SCI中。图12为本申请实施例提供的第二阶段协作传输的指示方式的示意图。假设CRC比特的长度为24，目标终端的标识的长度为8。图12示出了将协作组的标识显式携带在SCI的某个信息域中，并使用目标终端的标识对CRC比特的前8位比特位进行加扰的情况。
上述各实施方式中，目标终端的标识也可以为下述中的任意一种：目标终端在协作组中的组内相对标识、目标终端对应的比特地图、目标终端对应的C-RNTI、目标终端对应的高层标识。
需要说明的是，第二阶段传输中协作终端在第二控制信息中指示协作组的标识以及目标终端的标识的方式，与第一阶段传输中网络设备在第一控制信息中指示协作组的标识以及目标终端的标识的方式类似。相应的，第二阶段中目标终端根据第二控制信息确定协作组的标识以及目标终端的标识的方式，与第一阶段中协作终端根据第一控制信息确定协作组的标识以及目标终端的标识的方式类似。此处不再赘述。
图13为本申请实施例提供的协作传输装置的结构示意图。如图13所述，该协助传输 装置1300，包括：处理模块1301和发送模块1302。
其中，处理模块1301，用于生成目标数据对应的协作组的标识和目标终端的标识，所述目标数据为所述网络设备待传输给所述目标终端的数据；
发送模块1302，用于向至少一个终端发送第一控制信息，所述第一控制信息用于指示所述目标数据对应的协作组的标识和目标终端的标识，所述至少一个终端包括至少一个协作终端和/或至少一个目标终端；
所述发送模块1302，还用于根据所述第一控制信息向所述至少一个终端发送所述目标数据。
在一种可能的实现方式中，所述第一控制信息包括所述目标数据对应的第一调度控制信息，以及所述第一调度控制信息对应的第一循环冗余校验CRC比特；所述协作组的标识和所述目标终端的标识携带在所述第一CRC比特和/或所述第一调度控制信息中。
在一种可能的实现方式中，所述第一CRC比特的第一部分比特位采用所述协作组的标识进行加扰，所述第一CRC比特的第二部分比特位采用所述目标终端的标识进行加扰。
在一种可能的实现方式中，所述第一CRC比特的至少部分比特位采用所述协作组的标识进行加扰，所述目标终端的标识携带在所述第一调度控制信息中。
在一种可能的实现方式中，所述第一CRC比特的至少部分比特位采用所述目标终端的标识进行加扰，所述协作组的标识携带在所述第一调度控制信息中。
在一种可能的实现方式中，所述目标终端的标识为下述标识中的任意一种标识：所述目标终端在所述协作组中的组内相对标识、所述目标终端对应的比特地图、所述目标终端对应的小区无线网络临时标识C-RNTI、所述目标终端对应的高层标识；其中，所述比特地图包括至少1个比特位，所述比特地图中的每个比特位分别对应所述协作组中的一个终端，所述比特地图的各比特用于指示所述目标终端。
本申请实施例提供的协作传输装置，可用于执行上述任一方法实施例中的网络设备侧的技术方案，其实现原理和技术效果类似，此处不再赘述。
图14为本申请实施例提供的协作传输装置的结构示意图。如图14所示，本实施例提供的协作传输装置1400，包括：接收模块1401、处理模块1402和发送模块1403。
其中，接收模块1401，用于接收网络设备发送的第一控制信息；
处理模块1402，用于根据所述第一控制信息，确定目标数据对应的协作组的标识和目标终端的标识；
所述接收模块1401，还用于根据所述第一控制信息，接收所述网络设备发送的所述目标数据。
在一种可能的实现方式中，所述第一控制信息包括所述目标数据对应的第一调度控制信息，以及所述第一调度控制信息对应的第一循环冗余校验CRC比特；所述处理模块1402具体用于：根据所述第一调度控制信息和/或所述第一CRC比特，确定目标数据对应的协作组的标识和目标终端的标识。
在一种可能的实现方式中，所述处理模块1402具体用于：采用自身所在的至少一个协作组的标识，以及各自协作组中的至少一个目标终端的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功时采用的协作组的标识作为所述目标数据对应的协作组的标识，并将解扰成功时采用的目标终端的标识作为所述目标数据对应的目标终端的标识。
在一种可能的实现方式中，所述处理模块1402具体用于：采用自身所在的至少一个协作组的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功的协作组的标识作为所述目标数据对应的协作组的标识；根据所述第一调度控制信息，获取所述目标数据对应的目标终端的标识。
在一种可能的实现方式中，所述处理模块1402具体用于：采用自身所在的至少一个协作组中的至少一个目标终端的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功的目标终端的标识作为所述目标数据对应的目标终端的标识；根据所述第一调度控制信息，获取所述目标数据对应的协作组的标识。
在一种可能的实现方式中，所述发送模块1403用于向所述目标终端发送第二控制信息，所述第二控制信息用于指示所述目标数据对应的协作组的标识和所述目标终端的标识；所述发送模块1403还用于根据所述第二控制信息，向所述目标终端发送所述目标数据。
在一种可能的实现方式中，所述第二控制信息包括：所述目标数据对应的第二调度控制信息，以及所述第二调度控制信息对应的第二CRC比特；所述协作组的标识和所述目标终端的标识携带在所述第二CRC比特和/或所述第二调度控制信息中。
在一种可能的实现方式中，所述第二CRC比特的第一部分比特位采用所述协作组的标识进行加扰，所述第二CRC比特的第二部分比特位采用所述目标终端的标识进行加扰。
在一种可能的实现方式中，所述第二CRC比特的至少部分比特位采用所述协作组的标识进行加扰，所述目标终端的标识携带在所述第二调度控制信息中。
在一种可能的实现方式中，所述第二CRC比特的至少部分比特位采用所述目标终端的标识进行加扰，所述协作组的标识携带在所述第二调度控制信息中。
在一种可能的实现方式中，所述目标终端的标识为下述标识中的任意一种标识：所述目标终端在所述协作组中的组内相对标识、所述目标终端对应的比特地图、所述目标终端对应的小区无线网络临时标识C-RNTI、所述目标终端对应的高层标识；其中，所述比特地图包括至少1个比特位，所述比特地图中的每个比特位分别对应所述协作组中的一个终端，所述比特地图中的各比特用于指示所述目标终端。
本实施例提供的协作传输装置，可用于执行上述任一方法实施例中终端侧的技术方案，其实现原理和技术效果类似，此处不再赘述。
图15为本申请实施例提供的网络设备的硬件结构示意图。如图15所示，本实施例提供的网络设备1500，包括：处理器1501以及存储器1502；其中
存储器1502，用于存储计算机程序；
处理器1501，用于执行存储器存储的计算机程序，以实现上述实施例中的网络设备所执行的协作传输方法。具体可以参见前述方法实施例中的相关描述。
可选地，存储器1502既可以是独立的，也可以跟处理器1501集成在一起。
当所述存储器1502是独立于处理器1501之外的器件时，所述网络设备1500还可以包括：
总线1503，用于连接所述存储器1502和处理器1501。
图15所示的网络设备1500还可以进一步包括发送器1504，所述发送器1504用于向终端发送数据或信号。
在一种可能的实现方式中，图13所述的处理模块可以被集成在处理器1501中实现， 发送模块可以被集成在发送器1504中实现。
本申请实施例提供的网络设备，可用于执行上述方法实施例中的网络设备所执行的方法，其实现原理和技术效果类似，本实施例此处不再赘述。
图16为本申请实施例提供的终端的硬件结构示意图。如图16所示，本实施例提供的终端1600，包括：处理器1601以及存储器1602；其中
存储器1602，用于存储计算机程序；
处理器1601，用于执行存储器存储的计算机程序，以实现上述实施例中的终端所执行的协作传输方法。具体可以参见前述方法实施例中的相关描述。
可选地，存储器1602既可以是独立的，也可以跟处理器1601集成在一起。
当所述存储器1602是独立于处理器1601之外的器件时，所述终端1600还可以包括：
总线1603，用于连接所述存储器1602和处理器1601。
图16所示的终端1600还可以进一步包括接收器1604和发送器1605，所述接收器1604用于从网络设备接收数据或者信号，所述发送器1605用于向其他终端发送数据或信号。
在一种可能的实现方式中，图14所述的处理模块可以被集成在处理器1601中实现，接收模块可以被集成在接收器1604中实现，发送模块可以被集成在发送器1605中实现。
本申请实施例提供的终端，可用于执行上述方法实施例中的终端所执行的方法，其实现原理和技术效果类似，本实施例此处不再赘述。
本申请实施例还提供一种芯片，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得安装有所述芯片的网络设备执行如上网络设备实现的协作传输方法。
本申请实施例还提供一种芯片，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得安装有所述芯片的终端执行如上终端实现的协作传输方法。
本申请实施例还提供一种存储介质，所述存储介质包括计算机程序，所述计算机程序用于实现如上网络设备所执行的协作传输方法，或者实现如上终端所执行的协作传输方法。
本申请实施例还提供一种计算机程序产品，所述计算机程序产品包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行如上实施例中的终端所实现的协作传输方法，或者实现如上网络设备所执行的协作传输方法。
在本申请所提供的几个实施例中，应该理解到，所揭露的设备和方法，可以通过其它的方式实现。例如，以上所描述的设备实施例仅仅是示意性的，例如，所述模块的划分，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，例如多个模块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，装置或模块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模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能模块可以集成在一个处理单元中，也可以是各个模块单独物理存在，也可以两个或两个以上模块集成在一个单元中。上述模块成的单元 既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能模块的形式实现的集成的模块，可以存储在一个计算机可读取存储介质中。上述软件功能模块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)或处理器(英文：processor)执行本申请各个实施例所述方法的部分步骤。
应理解，上述处理器可以是中央处理单元(英文：central processing unit，简称：CPU)，还可以是其他通用处理器、数字信号处理器(英文：digital signal processor，简称：DSP)、专用集成电路(英文：application specific integrated circuit，简称：ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
存储器可能包含高速RAM存储器，也可能还包括非易失性存储NVM，例如至少一个磁盘存储器，还可以为U盘、移动硬盘、只读存储器、磁盘或光盘等。
总线可以是工业标准体系结构(industry standard architecture，ISA)总线、外部设备互连(peripheral component，PCI)总线或扩展工业标准体系结构(extended industry standard architecture，EISA)总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，本申请附图中的总线并不限定仅有一根总线或一种类型的总线。
上述存储介质可以是由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。存储介质可以是通用或专用计算机能够存取的任何可用介质。
一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于专用集成电路(application specific integrated circuits，简称：ASIC)中。当然，处理器和存储介质也可以作为分立组件存在于电子设备或主控设备中。

Claims (32)

  1. 一种协作传输方法，其特征在于，包括：
    网络设备生成目标数据对应的协作组的标识和目标终端的标识，所述目标数据为所述网络设备待传输给所述目标终端的数据；
    所述网络设备向至少一个终端发送第一控制信息，所述第一控制信息用于指示所述目标数据对应的协作组的标识和目标终端的标识，所述至少一个终端包括至少一个协作终端和/或至少一个目标终端；
    所述网络设备根据所述第一控制信息向所述至少一个终端发送所述目标数据。
  2. 根据权利要求1所述的方法，其特征在于，所述第一控制信息包括所述目标数据对应的第一调度控制信息，以及所述第一调度控制信息对应的第一循环冗余校验CRC比特；
    所述协作组的标识和所述目标终端的标识携带在所述第一CRC比特和/或所述第一调度控制信息中。
  3. 根据权利要求2所述的方法，其特征在于，所述第一CRC比特的第一部分比特位采用所述协作组的标识进行加扰，所述第一CRC比特的第二部分比特位采用所述目标终端的标识进行加扰。
  4. 根据权利要求2所述的方法，其特征在于，所述第一CRC比特的至少部分比特位采用所述协作组的标识进行加扰，所述目标终端的标识携带在所述第一调度控制信息中。
  5. 根据权利要求2所述的方法，其特征在于，所述第一CRC比特的至少部分比特位采用所述目标终端的标识进行加扰，所述协作组的标识携带在所述第一调度控制信息中。
  6. 根据权利要求1至5任一项所述的方法，其特征在于，所述目标终端的标识为下述标识中的任意一种标识：所述目标终端在所述协作组中的组内相对标识、所述目标终端对应的比特地图、所述目标终端对应的小区无线网络临时标识C-RNTI、所述目标终端对应的高层标识；
    其中，所述比特地图包括至少1个比特位，所述比特地图中的每个比特位分别对应所述协作组中的一个终端，所述比特地图的各比特用于指示所述目标终端。
  7. 一种协作传输方法，其特征在于，包括：
    协作终端接收网络设备发送的第一控制信息；
    所述协作终端根据所述第一控制信息，确定目标数据对应的协作组的标识和目标终端的标识；
    所述协作终端根据所述第一控制信息，接收所述网络设备发送的所述目标数据。
  8. 根据权利要求7所述的方法，其特征在于，所述第一控制信息包括所述目标数据对应的第一调度控制信息，以及所述第一调度控制信息对应的第一循环冗余校验CRC比特；所述协作终端根据所述第一控制信息，确定目标数据对应的协作组的标识和目标终端的标识，包括：
    所述协作终端根据所述第一调度控制信息和/或所述第一CRC比特，确定目标数据对应的协作组的标识和目标终端的标识。
  9. 根据权利要求8所述的方法，其特征在于，所述协作终端根据所述第一调度控制信息和/或所述第一CRC比特，确定目标数据对应的协作组的标识和目标终端的标识，包括：
    所述协作终端采用自身所在的至少一个协作组的标识，以及各自协作组中的至少一个目标终端的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功时采用的协作组的标识作为所述目标数据对应的协作组的标识，并将解扰成功时采用的目标终端的标识作为所述目标数据对应的目标终端的标识。
  10. 根据权利要求8所述的方法，其特征在于，所述协作终端根据所述第一调度控制信息和/或所述第一CRC比特，确定目标数据对应的协作组的标识和目标终端的标识，包括：
    所述协作终端采用自身所在的至少一个协作组的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功的协作组的标识作为所述目标数据对应的协作组的标识；
    所述协作终端根据所述第一调度控制信息，获取所述目标数据对应的目标终端的标识。
  11. 根据权利要求8所述的方法，其特征在于，所述协作终端根据所述第一调度控制信息和/或所述第一CRC比特，确定目标数据对应的协作组的标识和目标终端的标识，包括：
    所述协作终端采用自身所在的至少一个协作组中的至少一个目标终端的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功的目标终端的标识作为所述目标数据对应的目标终端的标识；
    所述协作终端根据所述第一调度控制信息，获取所述目标数据对应的协作组的标识。
  12. 根据权利要求7至11任一项所述的方法，其特征在于，所述协作终端根据所述第一控制信息，接收所述网络设备发送的所述目标数据之后，所述方法还包括：
    所述协作终端向所述目标终端发送第二控制信息，所述第二控制信息用于指示所述目标数据对应的协作组的标识和所述目标终端的标识；
    所述协作终端根据所述第二控制信息，向所述目标终端发送所述目标数据。
  13. 根据权利要求12所述的方法，其特征在于，所述第二控制信息包括：所述目标数据对应的第二调度控制信息，以及所述第二调度控制信息对应的第二CRC比特；
    所述协作组的标识和所述目标终端的标识携带在所述第二CRC比特和/或所述第二调度控制信息中。
  14. 根据权利要求13所述的方法，其特征在于，所述第二CRC比特的第一部分比特位采用所述协作组的标识进行加扰，所述第二CRC比特的第二部分比特位采用所述目标终端的标识进行加扰。
  15. 根据权利要求13所述的方法，其特征在于，所述第二CRC比特的至少部分比特位采用所述协作组的标识进行加扰，所述目标终端的标识携带在所述第二调度控制信息中。
  16. 根据权利要求13所述的方法，其特征在于，所述第二CRC比特的至少部分比特位采用所述目标终端的标识进行加扰，所述协作组的标识携带在所述第二调度控制信息中。
  17. 根据权利要求7至16任一项所述的方法，其特征在于，所述目标终端的标识为下述标识中的任意一种标识：所述目标终端在所述协作组中的组内相对标识、所述目标终端对应的比特地图、所述目标终端对应的小区无线网络临时标识C-RNTI、所述目标终端对应的高层标识；
    其中，所述比特地图包括至少1个比特位，所述比特地图中的每个比特位分别对应所述协作组中的一个终端，所述比特地图中的各比特用于指示所述目标终端。
  18. 一种协作传输装置，其特征在于，包括：
    处理模块，用于生成目标数据对应的协作组的标识和目标终端的标识，所述目标数据为网络设备待传输给所述目标终端的数据；
    发送模块，用于向至少一个终端发送第一控制信息，所述第一控制信息用于指示所述目标数据对应的协作组的标识和目标终端的标识，所述至少一个终端包括至少一个协作终端和/或至少一个目标终端；
    所述发送模块，还用于根据所述第一控制信息向所述至少一个终端发送所述目标数据。
  19. 根据权利要求18所述的装置，其特征在于，所述第一控制信息包括所述目标数据对应的第一调度控制信息，以及所述第一调度控制信息对应的第一循环冗余校验CRC比特；
    所述协作组的标识和所述目标终端的标识携带在所述第一CRC比特和/或所述第一调度控制信息中。
  20. 根据权利要求19所述的装置，其特征在于，所述第一CRC比特的第一部分比特位采用所述协作组的标识进行加扰，所述第一CRC比特的第二部分比特位采用所述目标终端的标识进行加扰。
  21. 根据权利要求19所述的装置，其特征在于，所述第一CRC比特的至少部分比特位采用所述协作组的标识进行加扰，所述目标终端的标识携带在所述第一调度控制信息中。
  22. 根据权利要求19所述的装置，其特征在于，所述第一CRC比特的至少部分比特位采用所述目标终端的标识进行加扰，所述协作组的标识携带在所述第一调度控制信息中。
  23. 一种协作传输装置，其特征在于，包括：
    接收模块，用于接收网络设备发送的第一控制信息；
    处理模块，用于根据所述第一控制信息，确定目标数据对应的协作组的标识和目标终端的标识；
    所述接收模块，还用于根据所述第一控制信息，接收所述网络设备发送的所述目标数据。
  24. 根据权利要求23所述的装置，其特征在于，所述第一控制信息包括所述目标数据对应的第一调度控制信息，以及所述第一调度控制信息对应的第一循环冗余校验CRC比特；
    所述处理模块具体用于：根据所述第一调度控制信息和/或所述第一CRC比特，确定目标数据对应的协作组的标识和目标终端的标识。
  25. 根据权利要求24所述的装置，其特征在于，所述处理模块具体用于：
    采用自身所在的至少一个协作组的标识，以及各自协作组中的至少一个目标终端的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功时采用的协作组的标识作为所述目标数据对应的协作组的标识，并将解扰成功时采用的目标终端的标识作为所述目标数据对应的目标终端的标识。
  26. 根据权利要求24所述的装置，其特征在于，所述处理模块具体用于：
    采用自身所在的至少一个协作组的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功的协作组的标识作为所述目标数据对应的协作组的标识；
    根据所述第一调度控制信息，获取所述目标数据对应的目标终端的标识。
  27. 根据权利要求24所述的装置，其特征在于，所述处理模块具体用于：
    采用自身所在的至少一个协作组中的至少一个目标终端的标识对所述第一CRC比特的至少部分比特位进行解扰，将解扰成功的目标终端的标识作为所述目标数据对应的目标终端的标识；
    根据所述第一调度控制信息，获取所述目标数据对应的协作组的标识。
  28. 一种网络设备，其特征在于，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得所述处理器运行所述计算机程序执行如权利要求1至6任一项所述的协作传输方法。
  29. 一种终端，其特征在于，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得所述处理器运行所述计算机程序执行如权利要求7至17任一项所述的协作传输方法。
  30. 一种存储介质，其特征在于，所述存储介质包括计算机程序，所述计算机程序被处理器执行时实现如权利要求1至6任一项所述的协作传输方法，或者，如权利要求7至17任一项所述的协作传输方法。
  31. 一种芯片，其特征在于，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，实现如权利要求1至6任一项所述的协作传输方法，或者，如权利要求7至17任一项所述的协作传输方法。
  32. 一种计算机程序产品，其特征在于，所述计算机程序产品被处理器执行时，实现如权利要求1至6任一项所述的协作传输方法，或者，如权利要求7至17任一项所述的协作传输方法。
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