WO2021017611A1 - Procédé et appareil de transmission de données - Google Patents

Procédé et appareil de transmission de données Download PDF

Info

Publication number
WO2021017611A1
WO2021017611A1 PCT/CN2020/093458 CN2020093458W WO2021017611A1 WO 2021017611 A1 WO2021017611 A1 WO 2021017611A1 CN 2020093458 W CN2020093458 W CN 2020093458W WO 2021017611 A1 WO2021017611 A1 WO 2021017611A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal device
information
data packet
resource pool
resource
Prior art date
Application number
PCT/CN2020/093458
Other languages
English (en)
Chinese (zh)
Other versions
WO2021017611A9 (fr
Inventor
刘荣宽
张鹏
马驰翔
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2021017611A1 publication Critical patent/WO2021017611A1/fr
Publication of WO2021017611A9 publication Critical patent/WO2021017611A9/fr

Links

Images

Classifications

    • 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
    • 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
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • This application relates to the communication field, and in particular to a data transmission method and device in the communication field.
  • Wireless communication technology has experienced rapid development in the past few decades. It has successively experienced the first generation of wireless communication systems based on analog communication systems, and the 2G wireless communication system represented by the global system for mobile communication (GSM) , 3G wireless communication system represented by wideband code division multiple access (WCDMA), and now it has been widely commercialized all over the world and has achieved great success.
  • Long term evolution (LTE) 4G wireless communication system The business supported by the wireless communication system has evolved from the initial voice and short message to now support wireless high-speed data communication. At the same time, the number of wireless connections around the world is experiencing continuous rapid growth, and various new wireless service types are also emerging in large numbers, such as the Internet of Things, autonomous driving, etc. These are all important to the next generation of wireless communication systems, such as the fifth The 5th generation wireless systems (5G) system puts forward higher requirements.
  • 5G 5th generation wireless systems
  • the data transmission between the terminal device and the terminal device can be called "sideline data transmission".
  • the terminal device as the receiving end can send control information to schedule the terminal device as the sending end.
  • the control information indicates that the terminal device as the sending end sends data packets.
  • the terminal device as the receiving end can send data packets on the resources indicated by the control information according to the control information.
  • the terminal device sending data to the network device can be called "uplink data transmission”.
  • the network device can send control information to schedule the terminal device.
  • the control information indicates the resource used by the terminal device to send the data packet.
  • the terminal device can According to the control information, the data packet is sent on the resource indicated by it.
  • User collaboration is one of the main features supported by the next-generation communication system, which can significantly increase the capacity of the system and the coverage of the network, while reducing the load of network equipment.
  • User cooperative transmission refers to assisting the uplink transmission or downlink transmission between the source terminal equipment and the network equipment through the side link between the cooperative user equipment (CUE) and the source user equipment (SUE). At present, there is no method to realize uplink data transmission in the user cooperative mode (referred to as uplink cooperative transmission in this article).
  • This application provides a data transmission method and device, which can distinguish the resources of uplink coordinated transmission, the resources of sideline data transmission, and the resources of uplink data transmission, so that terminal equipment and network equipment can directly use resources corresponding to the transmission mode
  • no scheduling signaling is required, which can save signaling overhead and reduce data transmission delay.
  • a data transmission method including: a first terminal device receives a first data packet from a second terminal device on a resource in a first resource pool, where the first resource pool is used in uplink coordinated transmission
  • the source terminal device sends a data packet to the cooperative terminal device, the first terminal device is the cooperative terminal device, the second terminal device is the source terminal device; the first terminal device is based on the The first data packet is received on the resource in the resource pool, and it is determined that the first data packet needs to be forwarded to the network device; the first terminal device forwards the data packet to the network device on the resource in the second resource pool.
  • the second resource pool is used by the cooperative terminal device to forward the data packet sent by the source terminal device to the network device.
  • the source terminal device, the cooperative terminal device, and the network device all use the resources in the resource pool dedicated to uplink cooperative transmission to perform data transmission, so that the cooperative terminal device can transmit data to the uplink.
  • the resources of cooperative transmission and the resources of side link transmission are distinguished.
  • the network equipment can distinguish the resources forwarded by the cooperative terminal equipment and the resources sent by the terminal equipment to the network equipment, so that the terminal equipment and the network equipment can directly correspond to the transmission mode For uplink coordinated transmission, there is no need for scheduling signaling, which can save signaling overhead and reduce data transmission delay.
  • the data transmission in the first stage of the uplink coordinated transmission uses the resources in the first resource pool, and the second terminal device and The first terminal device needs to obtain the first resource pool in advance.
  • the data transmission in the second stage of the uplink coordinated transmission (that is, the first terminal device forwards the first data packet to the network device) uses resources in the second resource pool, and the first terminal device and the network device need to preselect to obtain the second resource Pool.
  • pre-acquisition may be defined by a protocol, or may be configured by a network device for the first terminal device and/or the second terminal device through signaling, which is not limited in the embodiment of the present application.
  • the method before the first terminal device receives the first data packet from the second terminal device on the resources in the first resource pool, the method further The method includes: the first terminal device receives first information and second information from the network device, the first information is used to configure the first resource pool, and the second information is used to configure the second resource Pool.
  • first information for configuring the first resource pool and the above-mentioned second information for configuring the second resource pool may be sent through two different messages, or through two different fields in the same message.
  • first information and the second information may also be referred to as "first configuration information” and “second configuration information”, or “configuration information”, or other names, which are not limited in the embodiment of the present application.
  • the above-mentioned first resource pool and second resource pool can be configured periodically or non-periodically.
  • the network device can reasonably allocate resources in the resource pool according to actual conditions such as resource utilization, and dynamically adjust the resources in the resource pool, which is flexible
  • the configuration of the above-mentioned first resource pool and the second resource pool helps to improve resource utilization.
  • the first terminal device Since the first terminal device is a cooperative terminal device and must be located within the coverage area of the network device, the first terminal device can receive the first information and the second information sent by the network device. However, the second terminal device may not be within the coverage of the network device, and may not be able to receive the above-mentioned first information sent by the network device. In a possible implementation, the first terminal device may forward the first information received from the network device to the second terminal device, so that the second terminal device determines the first resource pool based on the first information, so that the Uplink data transmission is performed on the resource pool.
  • the network device needs to configure the first resource pool and the second resource pool for it through the first information and the second information.
  • the network device may configure the first resource pool for it only through the first information, or configure the first resource pool and the second resource pool for it through the first information and the second information.
  • the method before the first terminal device receives the first data packet from the second terminal device on the resources in the first resource pool, the method further The method includes: the first terminal device receives third information from the network device or the second terminal device, where the third information is used to instruct the first terminal device to activate the uplink coordinated transmission.
  • the network equipment can be flexibly adjusted.
  • the uplink coordinated transmission is activated through the third information, and when the uplink coordinated transmission is not used, the uplink coordinated transmission is deactivated by the information, so that the uplink coordinated transmission is deactivated.
  • the terminal equipment and network equipment as the receiving end do not need to distinguish between sideline data transmission, uplink data transmission and uplink coordinated transmission data, simplifying the process, reducing the burden on the receiving end terminal equipment and network equipment, thereby improving system performance.
  • the network device after determining to activate uplink coordinated transmission, the network device sends third information through signaling to instruct the first terminal device to activate uplink coordinated transmission.
  • the first terminal device may use the resources in the first resource pool to receive the data packet, and use the resources in the second resource pool to forward the data packet.
  • the foregoing third information may be configured by the network device through signaling, such as RRC signaling or downlink control information (downlink control information, DCI).
  • signaling such as RRC signaling or downlink control information (downlink control information, DCI).
  • the third information is received by the first terminal device from the network device; when the first terminal device receives all information from the network device After the third information, the method further includes: the first terminal device sends fourth information to the second terminal device, where the fourth information is used to instruct the second terminal device to activate the uplink coordinated transmission .
  • the first terminal device may send fourth information to the second terminal device to instruct the second terminal device to activate uplink coordinated transmission.
  • the second terminal device may use the resources in the first resource pool to send the data packet.
  • this method is more suitable for situations where the second terminal device is not within the coverage of the network device. Since the second terminal device is not within the coverage of the network device, it cannot receive the activation information sent by the network device (for example, the third Information, fourth information), in order to ensure that the second terminal device knows that the network device has activated the uplink cooperative transmission, the first terminal device needs to send the fourth information to the second terminal device.
  • the activation information sent by the network device for example, the third Information, fourth information
  • the method before the first terminal device receives the first data packet from the second terminal device on the resources in the first resource pool, the method further The method includes: the first terminal device receives fifth information from the network device, where the fifth information is used to indicate at least one of the following information: the first resource in the first resource pool and the second resource Corresponding to the terminal device; or, the second resource in the second resource pool corresponds to the second terminal device; or, the demodulation reference signal DMRS of the second terminal device; or, the second terminal device’s
  • the wireless network temporarily identifies RNTI.
  • the embodiments of this application are applicable to a situation where one cooperative terminal device provides services for multiple source terminal devices at the same time.
  • the above-mentioned first terminal device is a cooperative terminal device
  • the above-mentioned second terminal device is one of multiple source terminal devices.
  • the network device (optionally, the cooperative terminal device) needs to distinguish the received data from multiple sources. Which one of the source terminal devices. Therefore, in this embodiment of the application, the network device configures the first terminal device and the second terminal device to transmit the first data packet using the resources in the first resource pool, the resources in the second resource pool, and the DMRS of the second terminal device.
  • the second terminal device can use the resource, DMRS or RNTI that uniquely identifies the second terminal device to transmit the first data packet, so that the network device (optionally, the cooperative terminal device) can transmit the first data packet according to the The resource, DMRS or RNTI corresponding to the first data packet determines that the first data packet comes from the second terminal device.
  • cooperative terminal devices distinguish different source terminal devices through resources, which is beneficial to save space resource overhead or orthogonal code resource overhead; or, cooperative terminal devices can use DMRS to distinguish different source terminal devices, and different multiple Each source terminal device can send data packets on the same time-frequency resource, so that the spectrum efficiency is higher; or, the cooperative terminal device can use RNTI to accurately distinguish different source terminal devices.
  • signaling overhead can be saved.
  • the RNTI is used to scramble the cyclic redundancy check (CRC) of the control information sent by the sending end, and the receiving end can blindly check the control channel and use the same RNTI to descramble the control information.
  • the control information is used to schedule the transmission of the data packet of the data channel and indicate the resource used by the data packet.
  • the receiving end uses RNTI to descramble the control information and then receives the data packet according to the control information.
  • the first data packet sent by the first terminal device or the second terminal device corresponding to the control information sent by the RNTI scrambled CRC is called: the first terminal device or the second terminal device uses RNTI to send (or transmit) ) The first data packet.
  • the first terminal device uses the RNTI to send the data packet from the second terminal device (or The first terminal device) receives the first data packet.
  • the fifth information is used to indicate that the first resource corresponds to the second terminal device, and the first terminal device is in a first resource pool
  • Receiving the first data packet from the second terminal device on the resource of the first resource includes: the first terminal device receives the first data packet on the first resource; or, the fifth information is used to indicate the first data packet
  • the DMRS of the second terminal device the first terminal device receives the first data packet from the second terminal device on the resource in the first resource pool, including: the resource of the first terminal device in the first resource pool
  • the device receiving the first data packet from the second terminal device on the resources in the first resource pool includes: the first terminal device uses the RNTI of the second terminal device on the first resource from the first resource The second terminal device receives the first data packet.
  • the fifth information is used to indicate that the second resource corresponds to the second terminal device, and the first terminal device is in the second resource pool
  • the forwarding of the first data packet to the network device on the resource of the network device includes: the first terminal device forwards the first data packet to the network device on the second resource; or, the fifth The information is used to indicate the DMRS of the second terminal device, and the first terminal device forwards the first data packet to the network device on the resources in the second resource pool, including: the first terminal device is On the resources in the second resource pool, the DMRS of the second terminal device is used to send the first data packet to the network device; or, the fifth information is used to indicate the status of the second terminal device RNTI, where the first terminal device forwards the first data packet to the network device on the resources in the second resource pool, including: the first terminal device on the resources in the second resource pool, The RNTI of the second terminal device is used to forward the first data packet to the network device.
  • the first data packet includes sixth information, and the sixth information is used to indicate an identifier of the second terminal device.
  • the embodiments of this application are applicable to a situation where one cooperative terminal device provides services for multiple source terminal devices at the same time.
  • the above-mentioned first terminal device is a cooperative terminal device
  • the above-mentioned second terminal device is one of multiple source terminal devices.
  • the network device (optionally, the cooperative terminal device) needs to distinguish the received data from multiple sources. Which one of the source terminal devices. Therefore, in the embodiment of the present application, the second terminal device carries the identifier of the second terminal device in the first data packet, so that the network device (optionally, the cooperative terminal device) can determine the first terminal device according to the identifier of the second terminal device.
  • the data packet comes from the second terminal device.
  • another data transmission method including: a second terminal device determines a first resource pool, and the first resource pool is used by a source terminal device in uplink coordinated transmission to send a data packet to a coordinated terminal device; The second terminal device sends a first data packet to the first terminal device on the resources in the first resource pool, the first terminal device is the cooperative terminal device, and the second terminal device is the The source terminal equipment.
  • the second terminal device determining the first resource pool includes: the second terminal device receives the first information from the network device or the first terminal device , The first information is used to configure the first resource pool.
  • the The method further includes: the second terminal device receives fourth information from the network device or the first terminal device, where the fourth information is used to instruct the second terminal device to activate the uplink coordinated transmission.
  • the fourth information is received by the second terminal device from the network device, and when the second terminal device receives all information from the network device After the fourth information, the method further includes: the second terminal device sends third information to the first terminal device, where the third information is used to instruct the first terminal device to activate the uplink coordinated transmission .
  • the The method further includes: the second terminal device receives fifth information from the network device or the first terminal device, where the fifth information is used to indicate at least one of the following information: in the first resource pool
  • the first resource of corresponds to the second terminal device; or, the demodulation reference signal DMRS of the second terminal device; or, the radio network temporary identifier RNTI of the second terminal device.
  • the fifth information is used to indicate that the first resource in the first resource pool corresponds to the second terminal device
  • the second The terminal device sending a first data packet to the first terminal device on the resources in the first resource pool includes: the second terminal device sends the first data packet to the first terminal device on the first resource The first data packet; or, the fifth information is used to indicate the DMRS of the second terminal device, and the second terminal device sends to the first terminal device on the resources in the first resource pool
  • the first data packet includes: the second terminal device uses the DMRS of the second terminal device to send the first data packet to the first terminal device on the resources in the first resource pool; or
  • the fifth information is used to indicate the RNTI of the second terminal device, and the second terminal device sending a first data packet to the first terminal device on the resources in the first resource pool includes: The second terminal device sends the first data packet transmitted using the RNTI of the second terminal device to the first terminal device on the resources in the first resource pool.
  • the first data packet includes sixth information, and the sixth information is used to indicate an identifier of the second terminal device.
  • another data transmission method including: a network device receives a first data packet from the first terminal device on resources in a second resource pool, and the second resource pool is used in uplink coordinated transmission
  • the cooperative terminal device forwards the data packet sent by the source terminal device to the network device, and the first terminal device is the cooperative terminal device; the network device obtains data from the first terminal device based on the resources in the second resource pool.
  • a terminal device receives the first data packet, and determines that the first data packet is forwarded by the first terminal device.
  • the method before the network device receives the first data packet from the first terminal device on the resources of the second resource pool, the method further includes: The network device sends first information and second information, the first information is used to configure a first resource pool, the second information is used to configure the second resource pool, and the first resource pool is used for the The source terminal device in the uplink coordinated transmission sends a data packet to the coordinated terminal device.
  • the method before the network device receives the first data packet from the first terminal device on the resources of the second resource pool, the method further includes: The network device sends third information to the first terminal device, where the third information is used to instruct the first terminal device to activate the uplink coordinated transmission.
  • the method further includes: the network device sends fourth information to the second terminal device, where the fourth information is used to instruct the second terminal device Activate the uplink coordinated transmission, and the second terminal device is the source terminal device in the uplink coordinated transmission.
  • the method before the network device receives the first data packet from the first terminal device on the resources of the second resource pool, the method It also includes: the network device sending fifth information to the first terminal device and/or the second terminal device, the second terminal device being the source terminal device in the uplink coordinated transmission, and the fifth The information is used to indicate at least one of the following information: the first resource in the first resource pool corresponds to the second terminal device; or, the second resource of the second resource corresponds to the second terminal device Corresponding; or, the demodulation reference signal DMRS of the second terminal device; or, the radio network temporary identification RNTI of the second terminal device.
  • the fifth information is used to indicate that the second resource in the second resource pool corresponds to the second terminal device, and the network device is in the first Receiving the first data packet from the first terminal device on the resources of the second resource pool includes: the network device receives the first data packet from the second terminal device on the second resource from the first terminal device The first data packet; or, the fifth information is used to indicate the DMRS of the second terminal device, and the network device receives the first data packet from the first terminal device on the resources of the second resource pool, including : The network device uses the DMRS of the second terminal device to receive the first data packet from the second terminal device from the first terminal device on the resources of the second resource pool; or, The fifth information is used to indicate the RNTI of the second terminal device, and the network device receives the first data packet from the first terminal device on the resources of the second resource pool, including: The first data packet transmitted using the RNTI of the second terminal device is received from the first terminal device on the resources of the second resource
  • the first data packet includes sixth information, and the sixth information is used to indicate the identity of the second terminal device.
  • a data transmission device configured to execute the foregoing aspects or the methods in any possible implementation manners of the aspects.
  • the device includes a unit for executing the above-mentioned aspects or methods in any possible implementation manners of the aspects.
  • the device may include modules that perform one-to-one correspondence of the methods/operations/steps/actions described in the above aspects.
  • the modules may be hardware circuits, software, or hardware circuits combined with software. achieve.
  • the device is a communication chip
  • the communication chip may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.
  • the device is a communication device, and the communication device may include a transmitter for sending information or data, and a receiver for receiving information or data.
  • the device is used to execute the above aspects or the methods in any possible implementation of each aspect.
  • the device can be configured in the above terminal equipment or network equipment, or the device itself is the above terminal equipment. Or network equipment.
  • another data transmission device including a processor, a memory, 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 communication device executes any of the above The method in any possible implementation of the aspect.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory and the processor may be provided separately.
  • the communication device further includes a transmitter (transmitter) and a receiver (receiver).
  • the transmitter and the receiver can be arranged separately or integrated together, which is called a transceiver (transceiver).
  • a data transmission system including a device for implementing any possible method of the first aspect or the first aspect, and for implementing any one of the second or second aspects above A device for a possible implementation method, and a device for implementing the third aspect or any one of the possible implementation methods of the third aspect.
  • the communication system may also include other devices that interact with terminal devices and/or network devices in the solution provided in the embodiments of the present application.
  • a computer program product includes: a computer program (also called code, or instruction), which when the computer program is run, causes a computer to execute any of the above aspects.
  • a computer program also called code, or instruction
  • a computer-readable medium stores a computer program (also called code, or instruction) when it runs on a computer, so that the computer executes any of the above aspects.
  • a computer program also called code, or instruction
  • a communication device including a memory and a processor
  • the communication device may be, for example, a chip system
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program from the memory to make the installation
  • the communication device having the communication device executes the method in any one of the possible implementation manners of the foregoing aspects.
  • the chip system may include an input circuit or interface for outputting information or data, and an output circuit or interface for reading information or data.
  • the above-mentioned chip system may be a system on chip (SOC) or a baseband chip.
  • the baseband chip may include a processor, a channel encoder, a digital signal processor, a modem, and an interface module.
  • Fig. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • Fig. 2 is a schematic flowchart of a data transmission method provided by an embodiment of the present application.
  • Figure 3 is a schematic diagram of a resource pool configuration provided by an embodiment of the present application.
  • Fig. 4 is a schematic block diagram of a data transmission device provided by an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of another data transmission device provided by an embodiment of the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • UMTS universal mobile telecommunication system
  • 5G fifth generation
  • NR new radio
  • the terminal equipment in the embodiments of this application may also be called: user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, Mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • access terminal user unit, user station, Mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • the terminal device may be a device that provides voice/data connectivity to users, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and so on.
  • some examples of terminals are: mobile phones (mobile phones), tablets, notebook computers, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, and augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid) Wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocols , SIP) phone, wireless local loop (WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to wireless modem, vehicle Devices, wearable devices, terminal devices in a 5G network, or terminal devices in a public land mobile network (PLMN) that will evolve in
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • the terminal device may also be a terminal device in the Internet of Things (IoT) system.
  • IoT Internet of Things
  • the terminal device of the present application may also be an on-board module, on-board module, on-board component, on-board chip, or on-board unit built into a vehicle as one or more components or units. The vehicle passes through the built-in on-board module, on-board module, An on-board component, on-board chip, or on-board unit can implement the method of the present application.
  • V2X vehicle to everything
  • LTE-V long term evolution-vehicle
  • V2V vehicle-to-vehicle
  • V2V vehicle-to-vehicle
  • the network device in the embodiment of the present application may be a device used to communicate with terminal devices.
  • the network device may also be called an access network device or a wireless access network device, and may be a transmission reception point (TRP). ), it can also be an evolved NodeB (evolved NodeB, eNB or eNodeB) in the LTE system, a home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU) , It can also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and a network device in a 5G network or
  • the network equipment in the future evolved PLMN network may be an access point (AP) in a WLAN, or a gNB in a new radio (NR) system, which is not limited in the embodiment of the present application.
  • AP access point
  • a network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node (CU).
  • CU centralized unit
  • DU distributed unit
  • RAN device including a CU node and a DU node, or a control plane CU node (CU).
  • -CP node user plane CU node
  • CU-UP node user plane CU node
  • RAN equipment of DU node may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node (CU).
  • -CP node user plane CU node (CU-UP node) and RAN equipment of DU node.
  • the network equipment provides services for the cell, and the terminal equipment communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the network equipment.
  • the cell may belong to a macro base station (for example, a macro eNB or a macro gNB, etc.) , It may also belong to the base station corresponding to the small cell, where the small cell may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-speed data transmission services.
  • the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution subject of the methods provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided according to the embodiments of the application.
  • the execution subject of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute the program.
  • various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques.
  • article of manufacture used in this application encompasses a computer program that can be accessed from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • Fig. 1 shows a communication system 100 applied in an embodiment of the present application.
  • the communication system 100 may include at least two terminal devices, such as a terminal device 110 and a terminal device 120.
  • the communication system 100 may also include a network device 130, such as a base station or a base station controller. Among them, the network device 130 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area (cell).
  • the terminal device 120 is located in the coverage area of the network device 130
  • the terminal device 110 may be located in the coverage area of the network device 130 or not in the coverage area of the network device 130. Not limited.
  • the terminal device 120 may assist the terminal device 110 to send uplink data to the network device 130, which is called uplink coordinated transmission (also may be called uplink transmission based on user cooperation).
  • Uplink coordinated transmission can significantly increase the capacity of the system and the coverage of the network, while reducing the load of network equipment.
  • the uplink coordinated transmission mainly includes two stages: the first stage is the source terminal equipment (for example, source user equipment (source user equipment, SUE)) sending data to the cooperative terminal equipment (for example, cooperative user equipment (CUE)); The second stage is that the cooperative terminal device forwards the correctly received data to the network device.
  • the cooperative terminal device can forward data through different forwarding methods, such as amplifying forwarding, decoding forwarding, and compressing forwarding.
  • the source terminal device can achieve reliable data transmission with the assistance of the cooperating terminal device, thereby improving uplink coverage and system transmission efficiency.
  • the terminal device 110 may be referred to as a source terminal device
  • the terminal device 120 may be referred to as a coordinated terminal device.
  • the source terminal device and several coordinated terminal devices serving it may form a user cooperation group.
  • the source terminal device and the cooperative terminal device 1 and the cooperative terminal device 2 form a user cooperation group.
  • a terminal device it may be the source terminal device of the user cooperation group centered on itself, and may also be the cooperation terminal device of one or more other user cooperation groups, which is not limited in this embodiment of the application.
  • the network device or the source terminal device can select one or more collaborative terminal devices from the multiple potential collaborative terminal devices to cooperate with the source terminal device for data transmission.
  • Figure 1 exemplarily shows one network device and three terminal devices (including one source terminal device and two cooperative terminal devices).
  • the number of cooperative terminal devices corresponding to the source terminal device may also be two.
  • the communication system 100 may include multiple network devices, and the coverage of each network device may include other numbers of terminal devices, which is not limited in the embodiment of the present application.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, and the embodiment of the present application is not limited thereto.
  • "used to indicate” may include used for direct indication and used for indirect indication, and may also include explicit indication and implicit indication.
  • the information indicated by a certain piece of information is called information to be indicated.
  • the information to be indicated can be directly indicated, such as the information to be indicated or the information to be indicated. Index of the information to be indicated, etc.
  • the information to be indicated can also be indicated indirectly by indicating other information, where there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, and other parts of the information to be indicated are known or agreed in advance. For example, it is also possible to realize the indication of the to-be-indicated information by pre-arranging (for example, protocol definition) whether there is a certain cell, so as to reduce the indication overhead to a certain extent.
  • pre-acquisition may include being indicated by the network device through signaling or pre-defined, for example, protocol definition.
  • pre-defined can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate related information in the equipment (for example, including terminal equipment and network equipment). This application does not make any specific implementation methods. limited.
  • the "protocols” involved in the embodiments of this application may refer to standard protocols in the communication field, for example, may include long term evolution (LTE) protocols, new radio (NR) protocols, and future communications
  • LTE long term evolution
  • NR new radio
  • future communications The relevant agreements in the system are not limited in this application.
  • Fig. 2 shows a schematic flowchart of a data transmission method according to an embodiment of the present application.
  • the method 200 can be applied to the communication system 100 shown in FIG. 1, but the embodiment of the present application is not limited thereto.
  • the second terminal device determines a first resource pool, where the first resource pool is used by the source terminal device in the uplink coordinated transmission to send a data packet to the coordinated terminal device.
  • the second terminal device sends a first data packet to the first terminal device on the resources in the first resource pool; then, correspondingly, the first terminal device starts from the first data packet on the resources in the first resource pool.
  • the second terminal device receives the above-mentioned first data packet.
  • the first terminal device determines that the first data packet needs to be forwarded to the network device according to receiving the first data packet on the resource in the first resource pool;
  • the first terminal device forwards the above-mentioned first data packet to the network device on the resources in the second resource pool, where the second resource pool is used to cooperate with the terminal device to forward the data packet sent by the source terminal device to the network device;
  • the network device receives the first data packet from the first terminal device on the resources of the second resource pool.
  • the network device receives the first data packet from the first terminal device based on the resources in the second resource pool, and determines that the first data packet is forwarded by the first terminal device.
  • the data transmission in the first stage of the uplink coordinated transmission uses the resources in the first resource pool, and the second terminal device and The first terminal device needs to obtain the first resource pool in advance.
  • the data transmission in the second stage of the uplink coordinated transmission (that is, the first terminal device forwards the first data packet to the network device) uses resources in the second resource pool, and the first terminal device and the network device need to preselect to obtain the second resource Pool.
  • pre-acquisition may be defined by a protocol, or may be configured by a network device for the first terminal device and/or the second terminal device through signaling, which is not limited in the embodiment of the present application.
  • the first resource pool is used for the source terminal device in the uplink coordinated transmission to send data packets to the coordinated terminal device
  • the first resource pool is dedicated to the source terminal device in the uplink coordinated transmission to send data to the coordinated terminal device package.
  • the first resource pool is not used for data transmission of other transmission types (for example, the traditional single-hop data transmission between one terminal device and another terminal device), and is only used for data in the first stage of uplink coordinated transmission. transmission.
  • the first terminal device receives a data packet sent through the resources of the first resource pool, it can be considered that the data packet is a data packet for uplink coordinated transmission, and the data packet needs to be forwarded to the network device.
  • the second resource pool is used for the cooperative terminal device to forward the data packet sent by the source terminal device to the network device
  • the second resource pool is dedicated to the cooperative terminal device in the uplink cooperative transmission to forward the data packet to the network device.
  • the data packet is from the source terminal device.
  • the second resource pool is not used for data transmission of other transmission types (for example, traditional uplink data transmission between terminal equipment and network equipment), and is only used for data transmission in the second stage of uplink coordinated transmission.
  • the network device receives a data packet sent through the resources of the second resource pool, it can be considered that the data packet is a data packet for uplink cooperative transmission, and it can be determined that the data packet is forwarded by the first terminal device and from the second terminal device.
  • the data packet of the terminal device if the network device receives a data packet sent through the resources of the second resource pool, it can be considered that the data packet is a data packet for uplink cooperative transmission, and it can be determined that the data packet is forwarded by the first terminal device and from the second terminal device.
  • the data packet of the terminal device is a data packet for uplink cooperative transmission
  • the resources in the first resource pool and the second resource pool may include time domain resources and/or frequency domain resources, and may also include other resources such as air domain resources, which are not limited in the embodiment of the present application.
  • Figure 3 shows a schematic diagram of a resource pool configuration provided by an embodiment of the present application.
  • Figure 3 includes four types of resource pools.
  • the first resource pool and the second resource pool are dedicated to uplink coordinated transmission as described above;
  • the third resource pool is dedicated to sidelink transmission, that is, the second terminal device and the Single-hop data transmission of a terminal device;
  • the fourth resource pool is dedicated to uplink data transmission between the first terminal device and the network device.
  • the first terminal device receives the data packet from the second terminal device, and can determine the transmission type corresponding to the data packet according to the resource used by the second terminal device to send the data packet.
  • the first terminal device can determine that the data packet needs to be forwarded to the network device. The packet is sent to the first terminal device and does not need to be forwarded. In the same way, the network device receives a data packet from the first terminal device, and can determine the transmission type corresponding to the data packet according to the resource used by the first terminal device to send the data packet. If the data packet is in the second resource pool The network device can determine that the data packet is forwarded by the first terminal device and comes from the second terminal device. If the data packet is transmitted using the resources in the fourth resource pool, the network device can determine The data packet comes from the first terminal device.
  • the source terminal device, the cooperative terminal device, and the network device all use resources in the resource pool dedicated to uplink cooperative transmission for data transmission, so that the cooperative terminal device can
  • the resources for uplink cooperative transmission and the resources for sidelink transmission can be distinguished.
  • the network equipment can distinguish between the resources forwarded by the cooperative terminal equipment and the resources sent by the terminal equipment to the network equipment, so that the terminal equipment and the network equipment can directly use and
  • the resources corresponding to the transmission mode perform uplink coordinated transmission without scheduling signaling, which can save signaling overhead and reduce data transmission delay.
  • the method before the network device receives the first data packet from the first terminal device on the resources of the second resource pool, the method further includes: the network device sending first information and The second information, the first information is used to configure the first resource pool, and the second information is used to configure the second resource pool.
  • the first terminal device receives first information and second information from the network device, the second information is used to configure the second resource pool, and the second terminal device receives information from the network device or the network device.
  • the first terminal device receives the first information.
  • first information for configuring the first resource pool and the above-mentioned second information for configuring the second resource pool may be sent through two different messages, or through two different fields in the same message.
  • first information and the second information may also be referred to as "first configuration information” and “second configuration information”, or “configuration information”, or other names, which are not limited in the embodiment of the present application.
  • the above-mentioned first resource pool and second resource pool can be configured periodically or non-periodically.
  • the network device can reasonably allocate resources in the resource pool according to actual conditions such as resource utilization, and dynamically adjust the resources in the resource pool, which is flexible
  • the configuration of the above-mentioned first resource pool and the second resource pool helps to improve resource utilization.
  • the network device needs to configure the first resource pool and the second resource pool for it through the first information and the second information.
  • the network device can configure the first resource pool for it only through the first information, or configure the first resource pool and the second resource pool for it through the first information and the second information.
  • the first terminal device since the first terminal device is a cooperative terminal device and must be located within the coverage area of the network device, the first terminal device can receive the first information and the second information sent by the network device. However, the second terminal device may not be within the coverage of the network device, and may not be able to receive the above-mentioned first information sent by the network device. In a possible implementation, the first terminal device may forward the first information received from the network device to the second terminal device, so that the second terminal device determines the first resource pool based on the first information, so that the Uplink data transmission is performed on the resource pool.
  • the above-mentioned embodiment is executed when the uplink coordinated transmission can be used by default.
  • the network device can activate or deactivate the uplink coordinated transmission through signaling.
  • the second terminal device Only the first terminal device and the network device can use the resources in the first resource pool and the resources in the second resource pool for data transmission.
  • the method further includes: the network device sends the first data packet to the first terminal device.
  • the terminal device sends third information, where the third information is used to instruct the first terminal device to activate the uplink coordinated transmission.
  • the first terminal device receives third information from the network device, where the third information is used to instruct the first terminal device to activate the uplink coordinated transmission.
  • the network equipment can be flexibly adjusted.
  • the uplink coordinated transmission is activated through the third information, and when the uplink coordinated transmission is not used, the uplink coordinated transmission is deactivated by the information, so that the uplink coordinated transmission is deactivated.
  • the terminal equipment and network equipment as the receiving end do not need to distinguish between sideline data transmission, uplink data transmission and uplink coordinated transmission data, simplifying the process, reducing the burden on the receiving end terminal equipment and network equipment, thereby improving system performance.
  • the network device after determining to activate uplink coordinated transmission, the network device sends third information through signaling to instruct the first terminal device to activate uplink coordinated transmission.
  • the first terminal device may use the resources in the first resource pool to receive the data packet, and use the resources in the second resource pool to forward the data packet.
  • the foregoing third information may be configured by the network device through signaling, such as RRC signaling or downlink control information (downlink control information, DCI).
  • signaling such as RRC signaling or downlink control information (downlink control information, DCI).
  • the third information is received by the first terminal device from the network device; after the first terminal device receives the third information from the network device, the The method further includes: the first terminal device sends fourth information to the second terminal device, where the fourth information is used to instruct the second terminal device to activate the uplink coordinated transmission.
  • the second terminal device receives fourth information from the first terminal device, where the fourth information is used to instruct the second terminal device to activate the uplink coordinated transmission.
  • the first terminal device may send fourth information to the second terminal device to instruct the second terminal device to activate uplink coordinated transmission.
  • the second terminal device may use the resources in the first resource pool to send the data packet.
  • this method is more suitable for situations where the second terminal device is not within the coverage of the network device. Since the second terminal device is not within the coverage of the network device, it cannot receive the activation information sent by the network device (for example, the third Information, fourth information), in order to ensure that the second terminal device knows that the network device has activated the uplink cooperative transmission, the first terminal device needs to send the fourth information to the second terminal device.
  • the activation information sent by the network device for example, the third Information, fourth information
  • the method further includes: the network device sends fourth information to the second terminal device, where the fourth information is used to instruct the second terminal device to activate the uplink coordinated transmission .
  • the second terminal device receives the fourth information from the network device.
  • the network device may directly send the foregoing fourth information to the second terminal device, instructing the second terminal device to activate uplink coordinated transmission.
  • the second terminal device may use the resources in the first resource pool to send the data packet.
  • the foregoing fourth information may be configured by the network device through signaling, such as RRC signaling or DCI.
  • this method is more suitable for a situation where the second terminal device is located within the coverage area of the network device. In this way, there is no need for the first terminal device to send the fourth information to the second terminal device, which can save the signaling overhead of the first terminal device and reduce the burden on the first terminal device.
  • the embodiment of the present application does not exclude the situation that in order to improve the reliability of the second terminal device receiving the fourth information, the first terminal device and the network device both send the fourth information to the second terminal device.
  • the network device may also instruct the uplink coordinated transmission to be deactivated through signaling, that is, stop the uplink coordinated transmission, and stop the use of the first resource pool and the second resource pool.
  • the deactivation instruction method is similar to the activation instruction method, and will not be repeated here.
  • the method further includes: the network device The first terminal device and/or the second terminal device sends fifth information, where the fifth information is used to indicate at least one of the following information: the first resource in the first resource pool and the Corresponding to the second terminal device; or, the second resource of the second resource corresponds to the second terminal device; or, the demodulation reference signal (DMRS) of the second terminal device; or, so The radio network temporary identity (RNTI) of the second terminal device.
  • DMRS demodulation reference signal
  • the first terminal device receives the fifth information from the network device
  • the second terminal device receives the fifth information from the network device or the first terminal device.
  • the embodiments of this application are applicable to a situation where one cooperative terminal device provides services for multiple source terminal devices at the same time.
  • the above-mentioned first terminal device is a cooperative terminal device
  • the above-mentioned second terminal device is one of multiple source terminal devices.
  • the network device (optionally, the cooperative terminal device) needs to distinguish the received data from multiple sources. Which one of the source terminal devices. Therefore, in this embodiment of the application, the network device configures the first terminal device and the second terminal device to transmit the first data packet using the resources in the first resource pool, the resources in the second resource pool, and the DMRS of the second terminal device.
  • the second terminal device can use the resource, DMRS or RNTI that uniquely identifies the second terminal device to transmit the first data packet, so that the network device (optionally, the cooperative terminal device) can transmit the first data packet according to the The resource, DMRS or RNTI corresponding to the first data packet determines that the first data packet comes from the second terminal device.
  • the RNTI is used to scramble the cyclic redundancy check (CRC) of the control information sent by the sending end, and the receiving end can blindly check the control channel and use the same RNTI to descramble the control information.
  • the control information is used to schedule the transmission of the data packet of the data channel and indicate the resource used by the data packet.
  • the receiving end uses RNTI to descramble the control information and then receives the data packet according to the control information.
  • the first data packet sent by the first terminal device or the second terminal device corresponding to the control information sent by the RNTI scrambled CRC is called: the first terminal device or the second terminal device uses RNTI to send (or transmit) ) The first data packet.
  • the first terminal device (or network device) uses the RNTI to send the data packet from the second terminal device (or The first terminal device) receives the first data packet.
  • the foregoing fifth information may be configured by the network device through signaling, such as RRC signaling or DCI.
  • the first terminal device may send the fifth information to the second terminal device to improve the reliability of the second terminal device in obtaining the fifth information. This method is more suitable for scenarios where the second terminal device is not within the coverage of the network device.
  • this embodiment may include the following situations:
  • the fifth information is used to indicate that the first resource in the first resource pool corresponds to the second terminal device.
  • the second terminal device may send the first data packet to the first terminal device on the first resource, and correspondingly, the first terminal device may receive the first data packet on the first resource The first data packet.
  • the second terminal device corresponds to the first resource in the first resource pool.
  • the second terminal device can use the first resource to send the first data packet to the first terminal device. If the first terminal device receives If the first data packet is transmitted through the first resource, it can be determined that the first data packet is from the second terminal device.
  • cooperative terminal devices can distinguish different source terminal devices by using time-frequency resources, which is beneficial to save space resource overhead or orthogonal code resource overhead.
  • the first resource in the first resource pool may be a sub-channel, that is, the first resource pool is divided into multiple sub-channels, where the number of sub-channels is greater than or equal to multiple source terminal devices
  • a sub-channel can be used for data transmission of a source terminal device.
  • the CUE can transmit data with SUE 1, SUE 2, and SUE 3 at the same time.
  • the resources in the first resource pool are divided into subchannel 1, subchannel 2 and subchannel 3. Among them, subchannel 1 corresponds to SUE 1, subchannel 2 corresponds to SUE 2, and subchannel 3 corresponds to SUE 3.
  • SUE 1 can send data packets to CUE through subchannel 1
  • SUE 2 can send data packets to CUE through subchannel 2
  • SUE 3 can send data packets to CUE through subchannel 3.
  • the CUE can determine the source of the data packet according to the sub-channel corresponding to the data packet.
  • the above-mentioned sub-channels may be frequency-divided, that is, different frequency bands may correspond to different sub-channels; or, the above-mentioned sub-channels may be time-divided, that is, different time periods may correspond to different sub-channels; or, the above-mentioned sub-channels It can be a time-frequency resource pattern (pattern), that is, different patterns can correspond to different sub-channels.
  • pattern time-frequency resource pattern
  • the fifth information is used to indicate the DMRS of the second terminal device.
  • the second terminal device may use the DMRS of the second terminal device to send the first data packet to the first terminal device on the resources in the first resource pool, then correspondingly, the first terminal device A terminal device may use the DMRS of the second terminal device to receive the first data packet from the second terminal device on the resources in the first resource pool.
  • the DMRS is mainly used for the receiver to perform channel estimation on the physical channel, so as to correctly demodulate the control channel and the data channel.
  • DMRS is a specific reference signal for terminal equipment, and DMRS between different terminal equipment is different (or distinguishable).
  • the control channel may occupy a part of the time-frequency resource
  • the data channel may occupy a part of the time-frequency resource
  • the reference signal may occupy a part of the time-frequency resource.
  • the above-mentioned DMRS is a kind of reference signal and will occupy a part of the time-frequency resource. Therefore, in the embodiment of the present application, the network device may configure different DMRSs for different second terminal devices for demodulation of the first data packet sent by the second terminal device.
  • the second terminal device may use the DMRS of the second terminal device to send the first data packet to the first terminal device. If the first terminal device receives the first data packet transmitted by the DMRS of the second terminal device , It can be determined that the first data packet comes from the second terminal device.
  • cooperative terminal devices can use DMRS to distinguish different source terminal devices, and multiple different source terminal devices can send data packets on the same time-frequency resource, so that the spectrum efficiency is higher.
  • the fifth information is used to indicate the RNTI of the second terminal device.
  • the second terminal device may send the first data packet transmitted using the RNTI of the second terminal device to the first terminal device on the resources in the first resource pool, and correspondingly, the The first terminal device may use the RNTI of the second terminal device to receive the first data packet from the second terminal device on the first resource.
  • the RNTI is used to scramble the CRC sent by the sending end, and the receiving end can blindly check the control channel and use the same RNTI to descramble the control information.
  • the network device may configure different RNTIs for different second terminal devices.
  • the RNTI is used to scramble the CRC of the sideline control information sent by the second terminal device through the sideline control channel.
  • the information is used to indicate the resources used by the side row data channel to send the data packet, and the second terminal device sends the first data packet on the resource indicated by the side row control information through the side row data channel.
  • the second terminal device may use the RNTI of the second terminal device to scramble the CRC of the side control information sent to the first terminal device to indicate the resources used by the first data packet. If a terminal device receives the sideline control information transmitted by the RNTI of the second terminal device, it can determine that the first data packet corresponding to the resource indicated by the sideline control information is from the second terminal device. In the embodiment of the present application, cooperative terminal devices can use RNTI to accurately distinguish different source terminal devices.
  • this embodiment may include the following situations:
  • the fifth information is used to indicate that the second resource in the second resource pool corresponds to the second terminal device.
  • the first terminal device may forward the first data packet to the network device on the second resource, and correspondingly, the network device may forward the first data packet from the first terminal device on the second resource Receiving the first data packet from the second terminal device.
  • the second terminal device corresponds to the second resource in the second resource pool.
  • the first terminal device can use the second resource to forward the first data packet from the second terminal device to the network device. If the network device After receiving the first data packet transmitted through the second resource, it can be determined that the first data packet is from the second terminal device.
  • the network device can use time-frequency resources to distinguish different source terminal devices, which is beneficial to save space resource overhead or orthogonal code resource overhead.
  • the second resource in the second resource pool may be a sub-channel, that is, the second resource pool is divided into multiple sub-channels, where the number of sub-channels is greater than or equal to multiple source terminal devices
  • a sub-channel can be used for data transmission of a source terminal device.
  • CUE can transmit data with SUE 1, SUE 2, and SUE 3 at the same time.
  • the resources in the second resource pool are divided into subchannel 1, subchannel 2 and subchannel 3. Among them, subchannel 1 corresponds to SUE 1, subchannel 2 corresponds to SUE 2, and subchannel 3 corresponds to SUE 3.
  • CUE can forward data packets from SUE 1 to network equipment through subchannel 1
  • CUE can forward data packets from SUE 2 to network equipment through subchannel 2
  • CUE can forward data from SUE 3 to network equipment through subchannel 3 package.
  • the network device can determine the source of the data packet according to the sub-channel corresponding to the data packet.
  • the above-mentioned sub-channels may be frequency-divided, that is, different frequency bands may correspond to different sub-channels; or, the above-mentioned sub-channels may be time-divided, that is, different time periods may correspond to different sub-channels; or, the above-mentioned sub-channels It can be a time-frequency resource pattern (pattern), that is, different patterns can correspond to different sub-channels.
  • pattern time-frequency resource pattern
  • the fifth information is used to indicate the DMRS of the second terminal device.
  • the first terminal device may use the DMRS of the second terminal device to send the first data packet to the network device on the resources in the second resource pool, and correspondingly, the network device may On the resources of the second resource pool, the DMRS of the second terminal device is used to receive the first data packet from the second terminal device from the first terminal device.
  • the first terminal device may use the DMRS of the second terminal device to forward the first data packet from the second terminal device to the network device. If the network device receives the first data packet transmitted through the DMRS of the second terminal device, Data packet, it can be determined that the first data packet is from the second terminal device. In the embodiment of the present application, the network device can use the DMRS to distinguish different source terminal devices, and multiple source terminal devices of different types can send data packets on the same time-frequency resource, so that the spectrum efficiency is higher.
  • the fifth information is used to indicate the RNTI of the second terminal device.
  • the first terminal device may use the RNTI of the second terminal device to forward the first data packet to the network device on the resources in the second resource pool, and correspondingly, the network device may Receiving the first data packet transmitted by using the RNTI of the second terminal device from the first terminal device on the resources of the second resource pool.
  • the RNTI is used to scramble the CRC of the uplink control information sent by the first terminal device through the uplink control channel, and the uplink control information is used to indicate the resources used by the uplink data channel to send data packets, and the second terminal device The first data packet is sent on the resource indicated by the uplink control information through the uplink data channel.
  • the first terminal device may use the RNTI of the second terminal device to scramble the uplink control information forwarded to the network device and used to indicate the resource used by the first data packet from the second terminal device.
  • CRC If the network device receives the uplink control information transmitted through the RNTI of the second terminal device, it can determine that the first data packet corresponding to the resource indicated by the uplink control information is from the second terminal device. In the embodiment of the present application, the network device can use the RNTI to accurately distinguish different source terminal devices.
  • first stage a combination of multiple situations can also be used. It is assumed that the situation 1 and situation 2 in the first stage are combined. For example, first use situation 1 to configure SUE 1 and SUE 2 to correspond to those in the first resource pool. The first resource, SUE 3 corresponds to some other resources in the first resource pool. In order to further distinguish SUE 1 and SUE 2, DMRS of SUE 1 and DMRS of SUE 2 can be configured. The second stage is the same, so I won't repeat it here.
  • the first data packet includes sixth information, and the sixth information is used to indicate the identity of the second terminal device.
  • the second terminal device may carry the identifier of the second terminal device in the first data packet, so that the receiving end (the first terminal device and/or the network device) can determine the source of the first data packet.
  • the embodiments of this application are applicable to a situation where one cooperative terminal device provides services for multiple source terminal devices at the same time.
  • the above-mentioned first terminal device is a cooperative terminal device
  • the above-mentioned second terminal device is one of multiple source terminal devices.
  • the network device (optionally, the cooperative terminal device) needs to distinguish the received data from multiple sources. Which one of the source terminal devices. Therefore, in the embodiment of the present application, the second terminal device carries the identifier of the second terminal device in the first data packet, so that the network device (optionally, the cooperative terminal device) can determine the first terminal device according to the identifier of the second terminal device.
  • the data packet comes from the second terminal device.
  • this application also proposes a data transmission method 300, which includes the following steps:
  • the second terminal device sends a first data packet to the first terminal device, the first data packet carries seventh information, and the seventh information is used to indicate that the first data packet needs to be forwarded; then, correspondingly, the first terminal device Receiving the above-mentioned first data packet from the second terminal device;
  • the first terminal device determines that the first data packet needs to be forwarded to the network device according to the seventh information
  • the first terminal device forwards the aforementioned first data packet to the network device on the resources in the second resource pool, and the second resource pool is used to cooperate with the terminal device to forward the data packet sent by the source terminal device to the network device; then, correspondingly, The network device receives the first data packet from the first terminal device on the resources of the second resource pool.
  • the network device receives the first data packet from the first terminal device based on the resources in the second resource pool, and determines that the first data packet is forwarded by the first terminal device.
  • the second terminal device instructs the first terminal device to forward the data packet through an explicit indication.
  • the seventh information mentioned above may be an indication field carried in sidelink control information (SCI).
  • SCI sidelink control information
  • the first terminal device forwards the first data packet to the network device through the resources in the second resource pool.
  • the second stage is the same as the above method 200. For related description, please refer to method 200. Repeat it again.
  • the difference between the method 300 and the method 200 is only: the first stage of the method 200 uses an implicit indication to indicate that the first terminal device needs to forward the first data packet, and the method 300 uses an explicit indication to indicate the first terminal device The first data packet needs to be forwarded.
  • the second stage of uplink coordinated transmission can also use an explicit indication method to indicate the source of the first data packet, and the explicit indication methods and implicit indication methods of the first and second phases can be combined arbitrarily, that is, except In addition to the two cases listed above, the first-stage implicit indication and the second-stage explicit indication can also be used, or the first-stage explicit indication and the second-stage explicit indication are not used here. limited.
  • FIG. 4 shows a data transmission device 400 provided by an embodiment of the present application.
  • the device 400 may include: a transceiver unit 410 and a processing unit 420.
  • the apparatus 400 can implement various steps or processes performed by the first terminal device in the above method embodiment.
  • the apparatus 400 can be the first terminal device or can support
  • the device for the first terminal device to implement its functions is, for example, a chip or a chip system that can be used in the first terminal device.
  • the transceiver unit may be a transceiver, which may include an antenna and a radio frequency circuit, etc.
  • the processing module may be a processor, such as a central processing unit (CPU).
  • the transceiver unit may be a radio frequency unit
  • the processing module may be a processor.
  • the transceiver unit may be an input/output interface of the chip system
  • the processing module may be a processor of the chip system.
  • the transceiving unit 410 is configured to: receive a first data packet from a second terminal device on a resource in a first resource pool, and the first resource pool is used to send a source terminal device in an uplink coordinated transmission to a coordinated terminal device Data packet, the device is the cooperative terminal device, and the second terminal device is the source terminal device; the processing unit 420 is configured to: receive the first terminal device according to the resources in the first resource pool.
  • the transceiving unit 410 is further configured to: forward the first data packet to the network device on the resources in the second resource pool, and the first data packet
  • the second resource pool is used by the cooperative terminal device to forward the data packet sent by the source terminal device to the network device.
  • the transceiving unit 410 is further configured to: before receiving the first data packet from the second terminal device on the resources in the first resource pool, receive the first information and the second information from the network device, The first information is used to configure the first resource pool, and the second information is used to configure the second resource pool.
  • the transceiving unit 410 is further configured to: before receiving the first data packet from the second terminal device on the resources in the first resource pool, receive the first data packet from the network device or the second terminal device. Three information, the third information is used to instruct the device to activate the uplink coordinated transmission.
  • the third information is received by the apparatus from the network device, and the transceiving unit 410 is further configured to: after receiving the third information from the network device, send the third information to the second terminal The device sends fourth information, where the fourth information is used to instruct the second terminal device to activate the uplink coordinated transmission.
  • the transceiver unit 410 is further configured to: before receiving the first data packet from the second terminal device on the resources in the first resource pool, receive fifth information from the network device, and the fifth The information is used to indicate at least one of the following information: the first resource in the first resource pool corresponds to the second terminal device; or, the second resource in the second resource pool corresponds to the second terminal device; Corresponding to the terminal device; or, the demodulation reference signal DMRS of the second terminal device; or, the radio network temporary identifier RNTI of the second terminal device.
  • the fifth information is used to indicate that the first resource corresponds to the second terminal device, and the transceiving unit 410 is specifically configured to: receive the first data packet on the first resource; Or, the fifth information is used to indicate the DMRS of the second terminal device, and the transceiving unit 410 is specifically configured to: use the DMRS of the second terminal device on the resources in the first resource pool.
  • the second terminal device receives the first data packet; or, the fifth information is used to indicate the RNTI of the second terminal device, and the transceiving unit 410 is specifically configured to: on the first resource, Receiving the first data packet from the second terminal device using the RNTI of the second terminal device.
  • the fifth information is used to indicate that the second resource corresponds to the second terminal device, and the transceiving unit 410 is specifically configured to: forward the network device to the network device on the second resource.
  • the first data packet; or, the fifth information is used to indicate the DMRS of the second terminal device, and the transceiving unit 410 is specifically configured to: use the second data packet on the resources in the second resource pool
  • the DMRS of the terminal device sends the first data packet to the network device; or, the fifth information is used to indicate the RNTI of the second terminal device, and the transceiving unit 410 is specifically configured to: On the resources in the resource pool, the RNTI of the second terminal device is used to forward the first data packet to the network device.
  • the first data packet includes sixth information, and the sixth information is used to indicate the identity of the second terminal device.
  • the apparatus 400 can implement various steps or processes performed by the second terminal device corresponding to the above method embodiments.
  • the apparatus 400 can be the second terminal device or can support
  • the device for the second terminal device to implement its functions is, for example, a chip or a chip system that can be used in the second terminal device.
  • the transceiver unit may be a transceiver, which may include an antenna and a radio frequency circuit, etc.
  • the processing module may be a processor, such as a central processing unit (CPU).
  • the transceiver unit may be a radio frequency unit
  • the processing module may be a processor.
  • the transceiver unit may be an input/output interface of the chip system
  • the processing module may be a processor of the chip system.
  • the processing unit 420 is configured to determine a first resource pool, and the first resource pool is used for the source terminal device in the uplink coordinated transmission to send data packets to the coordinated terminal device; the transceiving unit 410 is configured to: A first data packet is sent to a first terminal device on a resource in a resource pool, where the first terminal device is the cooperative terminal device, and the device is the source terminal device.
  • the processing unit 420 is specifically configured to receive first information from a network device or the first terminal device, where the first information is used to configure the first resource pool.
  • the transceiving unit 410 is further configured to: before sending a first data packet to the first terminal device on the resources in the first resource pool, from the network device or the first terminal device Receiving fourth information, where the fourth information is used to instruct the apparatus to activate the uplink coordinated transmission.
  • the fourth information is received by the apparatus from the network device, and the transceiving unit 410 is further configured to: after receiving the fourth information from the network device, send a message to the first terminal The device sends third information, where the third information is used to instruct the first terminal device to activate the uplink coordinated transmission.
  • the transceiving unit 410 is further configured to: before sending a first data packet to the first terminal device on the resources in the first resource pool, from the network device or the first terminal device Receiving fifth information, where the fifth information is used to indicate at least one of the following information: the first resource in the first resource pool corresponds to the device; or, the demodulation reference signal DMRS of the device; Or, the wireless network temporary identification RNTI of the device.
  • the fifth information is used to indicate that the first resource in the first resource pool corresponds to the device, and the transceiving unit 410 is specifically configured to:
  • the first terminal device sends the first data packet; or, the fifth information is used to indicate the DMRS of the device, and the transceiving unit 410 is specifically configured to: use the resources in the first resource pool
  • the DMRS of the apparatus sends the first data packet to the first terminal device; or, the fifth information is used to indicate the RNTI of the apparatus, and the transceiving unit 410 is specifically configured to:
  • the first data packet transmitted by using the RNTI of the apparatus is sent to the first terminal device on the resources in the resource pool.
  • the first data packet includes sixth information, and the sixth information is used to indicate the identity of the device.
  • the apparatus 400 can implement various steps or processes corresponding to the network equipment in the above method embodiments.
  • the apparatus 400 can be a network device, or can be capable of supporting a network device to implement it.
  • the functional device is, for example, a chip or chip system that can be used in a network device.
  • the transceiver unit may be a transceiver, which may include an antenna and a radio frequency circuit, etc.
  • the processing module may be a processor, for example, a central processing unit (CPU).
  • the transceiver unit may be a radio frequency unit
  • the processing module may be a processor.
  • the transceiver unit may be an input/output interface of the chip system, and the processing module may be a processor of the chip system.
  • the transceiving unit 410 is configured to: receive the first data packet from the first terminal device on the resources of the second resource pool, and the second resource pool is used for the coordinated terminal device in the uplink coordinated transmission to send the first data packet to the device. Forwarding the data packet sent by the source terminal device, the first terminal device is the cooperative terminal device; the processing unit 420 is configured to: receive the data packet from the first terminal device according to the resources in the second resource pool A first data packet, determining that the first data packet is forwarded by the first terminal device.
  • the transceiving unit 410 is further configured to: before receiving the first data packet from the first terminal device on the resources of the second resource pool, send the first information and the second information, and the first information is used for When configuring a first resource pool, the second information is used to configure the second resource pool, and the first resource pool is used for the source terminal device in the uplink coordinated transmission to send data to the coordinated terminal device package.
  • the transceiving unit 410 is further configured to: before receiving the first data packet from the first terminal device on the resources of the second resource pool, send third information to the first terminal device, and the first terminal device The third information is used to instruct the first terminal device to activate the uplink coordinated transmission.
  • the transceiving unit 410 is further configured to send fourth information to the second terminal device, where the fourth information is used to instruct the second terminal device to activate the uplink coordinated transmission, and the second terminal device Is the source terminal device in the uplink coordinated transmission.
  • the transceiving unit 410 is further configured to: before receiving the first data packet from the first terminal device on the resources of the second resource pool, send a message to the first terminal device and/or the first terminal device.
  • the second terminal device sends fifth information, the second terminal device is the source terminal device in the uplink coordinated transmission, and the fifth information is used to indicate at least one of the following information: the first resource pool The first resource in the corresponding to the second terminal device; or, the second resource of the second resource corresponds to the second terminal device; or, the demodulation reference signal DMRS of the second terminal device; or , The wireless network temporary identifier RNTI of the second terminal device.
  • the fifth information is used to indicate that the second resource in the second resource pool corresponds to the second terminal device, and the transceiving unit 410 is specifically configured to: use all resources on the second resource.
  • the first terminal device receives the first data packet from the second terminal device; or, the fifth information is used to indicate the DMRS of the second terminal device, and the transceiving unit 410 is specifically configured to: On the resources of the second resource pool, the DMRS of the second terminal device is used to receive the first data packet from the second terminal device from the first terminal device; or, the fifth information is used
  • the transceiving unit 410 is specifically configured to: receive, from the first terminal device on the resources of the second resource pool, all data transmitted by the RNTI of the second terminal device. The first data packet.
  • the first data packet includes sixth information, and the sixth information is used to indicate the identity of the second terminal device.
  • the source terminal device, the cooperative terminal device, and the network device all use resources in the resource pool dedicated to uplink cooperative transmission for data transmission, so that the cooperative terminal device can
  • the data transmitted by the uplink coordinated transmission is distinguished from the data transmitted by the side link.
  • the network device can distinguish the data forwarded by the cooperative terminal device and the uplink data sent by the terminal device to the network device, thereby improving the accuracy of data transmission.
  • the device 400 here is embodied in the form of a functional unit.
  • unit here can refer to application specific integrated circuit (application specific integrated circuit, ASIC), electronic circuit, processor for executing one or more software or firmware programs (such as shared processor, proprietary processor or group Processor, etc.) and memory, merge logic circuits and/or other suitable components that support the described functions.
  • ASIC application specific integrated circuit
  • the apparatus 400 may be specifically the first terminal device, the second terminal device, or the network device in the above-mentioned embodiment, and the apparatus 400 may be used to execute the method and the first In order to avoid repetition, the respective processes and/or steps corresponding to a terminal device, a second terminal device or a network device will not be repeated here.
  • the above-mentioned apparatus 400 has the function of realizing the corresponding steps executed by the first terminal device, the second terminal device or the network device in the above-mentioned method; the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the above-mentioned transceiver unit 410 may include a sending unit and a receiving unit.
  • the sending unit may be used to implement various steps and/or processes for performing the sending action corresponding to the above-mentioned transceiver unit, and the receiving unit may be used to implement the corresponding The steps and/or processes used to perform the receiving action.
  • the sending unit may be replaced by a transmitter, and the receiving unit may be replaced by a receiver, respectively performing the transceiver operations and related processing operations in each method embodiment.
  • the transceiving unit 410 may be replaced by a communication interface to perform the transceiving operations in each method embodiment.
  • the communication interface may be a circuit, module, bus, bus interface, transceiver, and other devices that can implement communication functions.
  • the processing unit 420 in the above embodiment may be implemented by a processor or a processor-related circuit
  • the transceiver unit 410 may be implemented by a transceiver or a transceiver-related circuit or interface circuit.
  • the above possible design device may also include a storage unit for storing a computer program, and the processing unit 420 may call and run the computer program from the storage unit, so that the device 400 executes the above method embodiment
  • the method on the terminal device side in the medium, or the method on the network device side in the foregoing method embodiment is executed, which is not limited in the embodiment of the present application.
  • the units in the above-mentioned embodiments may also be referred to as modules or circuits or components.
  • the device in FIG. 4 may also be a chip or a chip system, such as a system on chip (system on chip, SoC).
  • the transceiver unit may be the transceiver circuit of the chip, which is not limited here.
  • FIG. 5 shows another data transmission device 500 provided by an embodiment of the present application.
  • the device 500 includes a processor 510 and a transceiver 520.
  • the device 500 may further include a memory 550.
  • the memory 550 may be included in the processor 510.
  • the processor 510, the transceiver 520, and the memory 550 communicate with each other through an internal connection path.
  • the memory 550 is used to store instructions, and the processor 510 is used to execute instructions stored in the memory 550 to implement the method provided in the embodiments of the present application.
  • the apparatus 500 is configured to execute each process and step corresponding to the first terminal device in the method provided in the embodiment of the present application.
  • the transceiver 520 is configured to: receive a first data packet from a second terminal device on a resource in a first resource pool, and the first resource pool is used to send a source terminal device in an uplink coordinated transmission to a coordinated terminal device Data packet, the device is the cooperative terminal device, the second terminal device is the source terminal device; the processor 520 is configured to: receive the first terminal device based on the resource in the first resource pool Data packet, it is determined that the first data packet needs to be forwarded to the network device; the transceiver 510 is further configured to: forward the first data packet to the network device on the resources in the second resource pool, and the first data packet The second resource pool is used by the cooperative terminal device to forward the data packet sent by the source terminal device to the network device.
  • the apparatus 500 is configured to execute each process and step corresponding to the second terminal device in the method provided in the embodiment of the present application.
  • the processor 510 is configured to determine a first resource pool, and the first resource pool is used for the source terminal device in the uplink coordinated transmission to send data packets to the coordinated terminal device;
  • the transceiver 520 is configured to: A first data packet is sent to a first terminal device on a resource in a resource pool, where the first terminal device is the cooperative terminal device, and the device is the source terminal device.
  • the apparatus 500 is configured to execute each process and step corresponding to the network device in the method provided in the embodiment of the present application.
  • the transceiver 520 is configured to: receive the first data packet from the first terminal device on the resources of the second resource pool, and the second resource pool is used for the coordinated terminal device in the uplink coordinated transmission to send the first data packet to the device. Forwarding the data packet sent by the source terminal device, the first terminal device is the cooperative terminal device; the processor 510 is configured to: receive the first terminal device from the first terminal device according to the resources in the second resource pool A first data packet, determining that the first data packet is forwarded by the first terminal device.
  • the apparatus 500 may be specifically the first terminal device, the second terminal device, or the network device in the foregoing embodiment, and may be used to execute the first terminal device, the second terminal device, or the network device in the foregoing method embodiment.
  • the memory 550 may include a read-only memory and a random access memory, and provide instructions and data to the processor.
  • a part of the memory may also include a non-volatile random access memory.
  • the memory can also store device type information.
  • the processor 510 may be configured to execute instructions stored in the memory, and when the processor 510 executes the instructions stored in the memory, the processor 510 is configured to execute the above-mentioned method corresponding to the first terminal device, the second terminal device, or the network device. Each step and/or process of the embodiment.
  • the processor of the above-mentioned device may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), or application-specific integrated circuits. (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, 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 above method can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software units in the processor.
  • the software unit may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor executes the instructions in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • serial link DRAM SLDRAM
  • direct rambus RAM direct rambus RAM
  • At least one refers to one or more, and “multiple” refers to two or more.
  • And/or describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects are in an “or” relationship.
  • "The following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a).
  • At least one of a, b, or c can represent: a, b, c, a-b, a-c, b-c or a-b-c, wherein a, b, and c can be single or multiple.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present application.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented by software, it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, network equipment, user equipment, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium (for example, SSD).

Landscapes

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

Abstract

La présente invention fournit un procédé et un dispositif de transmission de données, qui permet d'économiser les frais de signalisation de transmission coopérative en liaison montante et de réduire la latence de transmission des données, et peut être appliquée à l'Internet des véhicules, tels que V2X, LTE-V et V2V. Le procédé comprend les étapes suivantes : un second dispositif terminal envoie un premier paquet de données à un premier dispositif terminal sur une ressource dans un premier groupe de ressources; le premier dispositif de terminal reçoit le premier paquet de données, et détermine que le premier paquet de données doit être transmis à un dispositif de réseau; le premier dispositif de terminal transfère le premier paquet de données au dispositif de réseau sur une ressource dans un second groupe de ressources, et le dispositif de réseau reçoit le premier paquet de données, et détermine que le premier paquet de données est transmis par le premier dispositif terminal, le premier groupe de ressources étant utilisé pour un dispositif terminal source dans une transmission coopérative en liaison montante pour envoyer un paquet de données à un dispositif terminal coopératif, et le second groupe de ressources étant utilisé pour le dispositif de terminal coopératif pour transférer le paquet de données envoyé par le dispositif de terminal source au dispositif de réseau.
PCT/CN2020/093458 2019-07-26 2020-05-29 Procédé et appareil de transmission de données WO2021017611A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910682820.6 2019-07-26
CN201910682820.6A CN112311511B (zh) 2019-07-26 2019-07-26 数据传输方法和装置

Publications (2)

Publication Number Publication Date
WO2021017611A1 true WO2021017611A1 (fr) 2021-02-04
WO2021017611A9 WO2021017611A9 (fr) 2021-04-01

Family

ID=74230012

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/093458 WO2021017611A1 (fr) 2019-07-26 2020-05-29 Procédé et appareil de transmission de données

Country Status (2)

Country Link
CN (1) CN112311511B (fr)
WO (1) WO2021017611A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023231965A1 (fr) * 2022-06-02 2023-12-07 华为技术有限公司 Procédé de transmission de données, appareil et système

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114916069A (zh) * 2021-02-10 2022-08-16 华为技术有限公司 一种数据传输方法及通信装置
CN115734256A (zh) * 2021-08-30 2023-03-03 华为技术有限公司 通信的方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106160951A (zh) * 2015-04-09 2016-11-23 上海贝尔股份有限公司 用于中继用户设备和远端用户设备之间的d2d通信的方法
CN106576354A (zh) * 2014-07-07 2017-04-19 Lg电子株式会社 在支持设备对设备通信的无线接入系统中通过中继终端发送和接收d2d信号的方法和装置
CN107534958A (zh) * 2015-05-11 2018-01-02 华为技术有限公司 信号传输方法、基站及用户设备
WO2019136626A1 (fr) * 2018-01-10 2019-07-18 Zte Corporation Procédés, appareils et systèmes de communications de dispositifs à dispositifs

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6527529B2 (ja) * 2014-05-02 2019-06-05 シャープ株式会社 デバイス・ツー・デバイス通信に対するリソースプール構成のメカニズム
CN109479300B (zh) * 2016-09-29 2020-12-04 Oppo广东移动通信有限公司 传输信息的方法、网络设备和终端设备
CN108307438B (zh) * 2017-01-13 2020-12-01 华为技术有限公司 数据发送方法、数据接收方法、终端设备和网络设备
CN109565680B (zh) * 2017-08-04 2020-10-02 Oppo广东移动通信有限公司 资源调度的方法、终端设备和网络设备
WO2019085563A1 (fr) * 2017-10-30 2019-05-09 Oppo广东移动通信有限公司 Procédé d'attribution de ressources, dispositif de réseau et dispositif de terminal
WO2019084926A1 (fr) * 2017-11-03 2019-05-09 Oppo广东移动通信有限公司 Procédé de partage de groupe de ressources dans une communication d2d, dispositif terminal et dispositif de réseau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106576354A (zh) * 2014-07-07 2017-04-19 Lg电子株式会社 在支持设备对设备通信的无线接入系统中通过中继终端发送和接收d2d信号的方法和装置
CN106160951A (zh) * 2015-04-09 2016-11-23 上海贝尔股份有限公司 用于中继用户设备和远端用户设备之间的d2d通信的方法
CN107534958A (zh) * 2015-05-11 2018-01-02 华为技术有限公司 信号传输方法、基站及用户设备
WO2019136626A1 (fr) * 2018-01-10 2019-07-18 Zte Corporation Procédés, appareils et systèmes de communications de dispositifs à dispositifs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023231965A1 (fr) * 2022-06-02 2023-12-07 华为技术有限公司 Procédé de transmission de données, appareil et système

Also Published As

Publication number Publication date
WO2021017611A9 (fr) 2021-04-01
CN112311511B (zh) 2023-06-06
CN112311511A (zh) 2021-02-02

Similar Documents

Publication Publication Date Title
WO2020143828A1 (fr) Procédé et appareil de configuration de ressources
WO2019096235A1 (fr) Procédé de réception d'un signal de référence, et procédé d'émission d'un signal de référence
US11943824B2 (en) Apparatus, system and method of transmitting a multiple basic service set identifier (BSSID) element
WO2020143692A1 (fr) Procédé et appareil de communication
WO2021017611A1 (fr) Procédé et appareil de transmission de données
JP2021503845A (ja) 通信方法および通信デバイス
WO2021043174A1 (fr) Appareil et procédé de communication
WO2019157995A1 (fr) Procédé et dispositif de transmission de données et appareil de communication
WO2020001607A1 (fr) Procédé d'embrouillage de données et dispositif associé
WO2021163938A1 (fr) Procédé de commutation d'antenne, dispositif terminal, et dispositif de communication
WO2019084891A1 (fr) Procédé et dispositif de traitement d'unité de données de protocole de commande d'accès au support
US20220174602A1 (en) Data transmission method and apparatus
WO2021017773A1 (fr) Procédé et appareil de rapport d'informations d'état de canal
WO2020073257A1 (fr) Procédé de communication sans fil, et dispositif terminal
WO2021008416A1 (fr) Procédé et appareil de détermination d'attribution de ressources
WO2019096232A1 (fr) Appareil et procédé de communication
WO2021134616A1 (fr) Procédé et appareil de configuration de ressources
US20220303961A1 (en) Physical channel monitoring method and terminal device
WO2021134577A1 (fr) Dispositif et procédé de transmission de données
WO2020143812A1 (fr) Procédé de transmission de données, et appareil de communication
WO2021134437A1 (fr) Procédé et dispositif de transmission d'informations de configuration d'accès initial
WO2020063596A1 (fr) Procédé et dispositif de communication
WO2021226851A1 (fr) Procédé de renvoi de livre de code de harq-ack, ainsi que dispositif de terminal et dispositif de réseau
WO2021068202A1 (fr) Procédé et appareil de communication
WO2021062869A1 (fr) Procédé de radiocommunication et dispositif terminal

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20847535

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20847535

Country of ref document: EP

Kind code of ref document: A1