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WO2021037014A1 - Procédé et appareil de transmission de données - Google Patents

Procédé et appareil de transmission de données Download PDF

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Publication number
WO2021037014A1
WO2021037014A1 PCT/CN2020/111001 CN2020111001W WO2021037014A1 WO 2021037014 A1 WO2021037014 A1 WO 2021037014A1 CN 2020111001 W CN2020111001 W CN 2020111001W WO 2021037014 A1 WO2021037014 A1 WO 2021037014A1
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WIPO (PCT)
Prior art keywords
sue
cue
uplink
timing information
uplink timing
Prior art date
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Ceased
Application number
PCT/CN2020/111001
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English (en)
Chinese (zh)
Inventor
李添泽
张鹏
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2021037014A1 publication Critical patent/WO2021037014A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay

Definitions

  • This application relates to the field of communications, and in particular to a data transmission method and device.
  • 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 2G wireless communication systems 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 in Long Term Evolution (LTE) 4G wireless communication system.
  • GSM Global System for Mobile Communication
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • 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.
  • 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., all of which have made improvements to the next generation of wireless communication systems. High demands.
  • UC User Equipment Cooperation
  • SUE Source User Equipment
  • CUE cooperative user equipment
  • CUE1 and CUE2 forward the correctly received signal to the base station (there can be different forwarding methods, such as amplifying forwarding, decoding forwarding, compression forwarding, etc.).
  • the SUE realizes reliable data transmission with the help of CUE1 and CUE2, thereby improving uplink coverage and system transmission efficiency.
  • an uplink timing advance (TA) mechanism is proposed.
  • the timing advance is essentially a time offset between the start time of receiving the downlink subframe and the time of transmitting the uplink subframe.
  • the base station can control the time at which uplink signals from different UEs arrive at the base station by appropriately controlling the offset of each UE. For UEs that are far away from the base station, due to greater transmission delay, it is necessary to send uplink data earlier than UEs that are closer to the base station.
  • the embodiments of the present application provide a data transmission method and device, which are used to ensure time synchronization on the uplink receiving side during data transmission between the CUE, SUE and the base station in the UC scenario.
  • the embodiments of the present application provide a data transmission method, which specifically includes: in the UC scenario, the CUE and the SUE serve as a cooperative user group; in the process of data transmission, the CUE obtains its own uplink timing information Or obtain the uplink timing information of the SUE; then, according to the uplink timing information, the CUE listens to the uplink data sent by the SUE to the radio access network device; finally, after the CUE obtains the uplink data, the uplink data is based on its own The uplink timing information or the uplink timing information of the SUE is forwarded to the radio access network device.
  • the uplink data of the SUE is intercepted and forwarded to the radio access network device. This can effectively ensure that the uplink data sent by the CUE and the SUE can be transmitted for a certain period of time. Synchronization prevents confusion when the radio access network device receives the uplink data of the SUE.
  • the CUE may specifically use the following possible methods to listen to the uplink data of the SUE according to the uplink timing information:
  • the CUE listens to the uplink data of the SUE in each transmission time slot according to the uplink timing information.
  • the CUE halves the duration indicated by its own uplink timing information to obtain the target uplink timing information, and then the CUE listens to the SUE's uplink data in every transmission time slot according to the target uplink timing information.
  • the CUE receives the downlink control information sent by the radio access network device, and the downlink control information is used to indicate the first designated time slot when the CUE listens to the uplink data of the SUE; then the CUE Listen to the uplink data of the SUE in the first designated time slot according to its own uplink timing information.
  • the CUE halves the duration indicated by its own uplink timing information to obtain the target uplink timing information; then the CUE receives the downlink control information sent by the radio access network device, and the downlink control information is used to indicate The target designated time slot when the CUE listens to the uplink data of the SUE; then the CUE listens to the uplink data of the SUE in the target designated time slot according to the target uplink timing information.
  • the CUE receives the side-line control information sent by the SUE, and the side-line control information is used to indicate the second designated time slot when the CUE listens to uplink data; then, the CUE follows the uplink timing The information listens to the uplink data of the SUE in the second designated time slot.
  • the CUE halves the duration indicated by its own uplink timing information to obtain the target uplink timing information; then the CUE receives the side control information sent by the SUE, and the side control information is used to indicate the CUE The target designated time slot when listening to uplink data; then, the CUE listens to the SUE's uplink data in the target designated time slot according to the target uplink timing information.
  • the CUE may also obtain the uplink timing information of the SUE.
  • the specific method may be as follows:
  • the CUE receives downlink control information sent by the radio access network device, and the downlink control information carries uplink timing information of the SUE.
  • the CUE receives the side-line control information sent by the SUE, and the side-line control information carries the uplink timing information of the SUE.
  • the CUE receives radio resource control information sent by the SUE, and the radio resource control information carries uplink timing information of the SUE.
  • the SUE when the SUE sends side control information or radio resource control information to the CUE, the SUE may adopt the following methods:
  • the SUE periodically sends the side control information or radio resource control information to the CUE.
  • the period of time is stipulated by the agreement between SUE and CUE.
  • the SUE will send the side control information or radio resource control information to the CUE after sending the uplink scheduling request. Specifically, the SUE may send the side control information or radio resource control information to the CUE in the next transmission time slot after sending the uplink scheduling request.
  • the radio access network device may allocate an independent resource pool for the CUE and the SUE for data transmission, where the independent resource pool is used for the CUE and the SUE Perform collaborative data transmission.
  • the radio access network device can configure the CUE and the SUE according to the system-level resource pool, thereby reducing the overhead of configuration signaling.
  • the CUE may also obtain the uplink resource of the SUE, and then listen to the uplink data of the SUE according to the uplink resource and the uplink timing information.
  • the CUE can obtain the uplink resources of the SUE, the uplink timing information of the SUE, and its own uplink timing information at the same time.
  • the CUE listens to the uplink data of the SUE, it can choose the best solution by itself. Interception, the specific situation is not limited here.
  • the CUE obtains the uplink resources of the SUE, it may specifically include the following methods:
  • the CUE receives scheduling information sent by the radio access network device, and the scheduling information is used to indicate the uplink resources of the SUE; the CUE obtains the SUE information according to the scheduling information. Uplink resources.
  • the radio access network device schedules the SUE to send uplink data through the scheduling information
  • the scheduling information is simultaneously sent to the CUE, so that the CUE can determine the uplink resources of the SUE and ensure the CUE's listening effect.
  • the CUE receives indication information sent by the radio access network device, where the indication information is used to indicate the resources of the SUE in a time frequency resource pattern (TFRP) Block location.
  • TFRP time frequency resource pattern
  • an embodiment of the present application provides a terminal device, and the device has a function of realizing the behavior of the terminal device in the foregoing first aspect.
  • 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-mentioned functions.
  • the device includes a unit or module for executing each step of the first aspect above.
  • the device includes: an acquisition module for acquiring uplink timing information, where the uplink timing information is the uplink timing information of the CUE itself or the uplink timing information is the uplink timing information of the source user equipment SUE; a listening module, It is used to listen to the uplink data of the SUE according to the uplink timing information; the sending module is used to send the uplink data to the radio access network device.
  • it also includes a storage module for storing necessary program instructions and data for the terminal device.
  • the device includes a processor and a transceiver, and the processor is configured to support the terminal device to perform the corresponding function in the method provided in the above-mentioned first aspect.
  • the transceiver is used to instruct the communication between the terminal device and the terminal device, and between the terminal device and the wireless access network device, and send the corresponding information or instructions involved in the above method to the terminal device or the wireless access network device.
  • the device may further include a memory, which is used for coupling with the processor and stores necessary program instructions and data for the terminal device.
  • the chip when the device is a chip in a terminal device, the chip includes: a processing module and a transceiver module.
  • the processing module may be a processor, for example, and the processor is configured to respond to the uplink timing information. Listen to the uplink data of the SUE; the transceiver module may be, for example, an input/output interface, pin or circuit on the chip, and transmit the uplink data to other chips or modules coupled with the chip.
  • the processing module can execute the computer-executable instructions stored in the storage unit to support the terminal device to execute the method provided in the first aspect.
  • the storage unit may be a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip, such as a read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc.
  • ROM read-only memory
  • RAM random access memory
  • the device includes: a processor, a baseband circuit, a radio frequency circuit, and an antenna.
  • the processor is used to control the functions of each circuit part, and the baseband circuit is used to generate data packets, which are processed by analog conversion, filtering, amplification and up-conversion through the radio frequency circuit, and then sent to the wireless access network equipment through the antenna.
  • the device further includes a memory, which stores necessary program instructions and data for the terminal device.
  • the processor mentioned in any of the above can be a general-purpose central processing unit (Central Processing Unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more An integrated circuit used to control the program execution of the above-mentioned data transmission methods.
  • CPU Central Processing Unit
  • ASIC application-specific integrated circuit
  • an embodiment of the present application provides a computer-readable storage medium, where the computer storage medium stores computer instructions, and the computer instructions are used to execute the method described in any possible implementation manner in the first aspect.
  • embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the method described in any possible implementation manner in the first aspect.
  • an embodiment of the present application provides a communication system, which includes the radio access network device and terminal described in the foregoing aspect.
  • the embodiments of the present application have the following advantages: after the CUE obtains the uplink timing information, the uplink data of the SUE is intercepted and forwarded to the radio access network device, which can effectively guarantee the The uplink data sent by the CUE and the SUE can be synchronized at a certain time to prevent confusion when the radio access network device receives the uplink data of the SUE.
  • FIG. 1 is an exemplary system architecture diagram of terminal device cooperation in an embodiment of this application
  • FIG. 2 is a schematic diagram of an embodiment of a data transmission method in an embodiment of the application
  • Figure 3 is a schematic diagram of an embodiment of resource configuration in an embodiment of the application.
  • FIG. 4 is a schematic diagram of an embodiment of a terminal device in an embodiment of the application.
  • FIG. 5 is a schematic diagram of another embodiment of a terminal device in an embodiment of this application.
  • Fig. 6 is a schematic diagram of an embodiment of a data transmission system in an embodiment of the application.
  • the embodiments of the present application provide a data transmission method and device, which are used to ensure time synchronization on the uplink receiving side during data transmission between the CUE, SUE and the base station in the UC scenario.
  • UC is one of the main features supported by the next generation communication system (5G). It can significantly increase the capacity of the system and the coverage of the network, while reducing the load on the base station side.
  • 5G next generation communication system
  • uplink transmission based on user cooperation mainly consists of two stages: the first stage SUE sends data to CUE, that is, SUE1 in Figure 1 sends data to CUE1 and CUE2; the second stage CUE1 and CUE2 forward the correctly received signal To the base station (there can be different forwarding methods, such as amplifying forwarding, decoding forwarding, compression forwarding, etc.).
  • the SUE realizes reliable data transmission with the help of CUE1 and CUE2, thereby improving uplink coverage and system transmission efficiency.
  • TA uplink timing advance
  • the timing advance is essentially a time offset between the start time of receiving the downlink subframe and the time of transmitting the uplink subframe.
  • the base station can control the time at which uplink signals from different UEs arrive at the base station by appropriately controlling the offset of each UE. For UEs that are far away from the base station, due to greater transmission delay, it is necessary to send uplink data earlier than UEs that are closer to the base station. However, there is no solution for the synchronization problem between the CUE, SUE and the uplink receiving side in the current UC scene.
  • the CUE and the SUE act as a cooperative user group; in the process of data transmission, the CUE obtains its own uplink timing information or Obtain the uplink timing information of the SUE; then, according to the uplink timing information, the CUE listens to the uplink data sent by the SUE to the radio access network device; finally, the CUE obtains the uplink data according to its own uplink data.
  • the timing information or the uplink timing information of the SUE is forwarded to the radio access network device.
  • the wireless access network device may be any device with a wireless transceiver function. Including but not limited to: evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional NodeB), base station in NR (gNodeB or gNB) or transmission receiving point/transmission reception point (TRP), 3GPP Subsequent evolution of base stations, access nodes in the WiFi system, wireless relay nodes, wireless backhaul nodes, etc.
  • the base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. Multiple base stations can support networks of the same technology mentioned above, or networks of different technologies mentioned above.
  • the base station can contain one or more co-site or non-co-site TRPs.
  • the radio access network device may also be a radio controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • the wireless access network device can also be a server, a wearable device, or a vehicle-mounted device, etc.
  • the following takes the wireless access network device as a base station as an example for description.
  • the multiple radio access network devices may be base stations of the same type, or base stations of different types.
  • the base station can communicate with the terminal equipment, and can also communicate with the terminal equipment through the relay station.
  • the terminal device can communicate with multiple base stations of different technologies.
  • the terminal device can communicate with a base station that supports an LTE network, can also communicate with a base station that supports a 5G network, and can also support communication with a base station of an LTE network and a base station of a 5G network. Double connection.
  • a terminal device is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on the water (such as ships, etc.); it can also be deployed in the air (such as airplanes, airplanes, etc.). Balloons and satellites are classy).
  • the terminal equipment may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial control ( Wireless terminals in industrial control, in-vehicle terminal equipment, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety (transportation) Wireless terminals in safety), wireless terminals in smart cities, wireless terminals in smart homes, wearable terminal devices, and so on.
  • a mobile phone mobile phone
  • a tablet computer Pad
  • a computer with wireless transceiver function virtual reality (VR) terminal equipment
  • AR augmented reality terminal equipment
  • industrial control Wireless terminals in industrial control, in-vehicle terminal equipment, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety (transportation) Wireless terminals in safety), wireless terminals in smart cities, wireless terminals in smart homes, wearable terminal devices, and so on.
  • Terminal equipment can sometimes be called user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, terminal equipment, wireless communication equipment, UE agent or UE device, etc.
  • the terminal can also be fixed or mobile.
  • the relay can be the aforementioned network device or the aforementioned terminal.
  • An embodiment of the data transmission method in the embodiment of the present application includes:
  • the CUE obtains uplink timing information, where the uplink timing information is the uplink timing information of the CUE itself or the uplink timing information of the SUE.
  • the CUE in order to achieve uplink data synchronization between the CUE and the SUE, the CUE obtains uplink timing information during data transmission, where the uplink timing information may be allocated by the radio access network device to the
  • the uplink timing information of the CUE may also be the uplink timing information of the SUE in the same user group as the CUE.
  • the CUE receives downlink control information sent by the radio access network device, and the downlink control information carries uplink timing information of the SUE.
  • the CUE receives the side-line control information sent by the SUE, and the side-line control information carries the uplink timing information of the SUE.
  • the CUE receives radio resource control information sent by the SUE, and the radio resource control information carries uplink timing information of the SUE.
  • the SUE when the SUE sends the uplink timing information of the SUE to the CUE, the SUE can adopt the following methods:
  • the SUE periodically sends the side control information or radio resource control information to the CUE.
  • the period of time is stipulated by the agreement between SUE and CUE.
  • the SUE will send the side control information or radio resource control information to the CUE after sending the uplink scheduling request. Specifically, the SUE may send the side control information or radio resource control information to the CUE in the next transmission time slot after sending the uplink scheduling request.
  • the SUE sends uplink data to the radio access network device.
  • the SUE uses uplink resources to send uplink data to the radio access network device.
  • the uplink resource of the SUE may be real-time configuration of the radio access network device, or may be a corresponding resource block pre-configured in the TFRP.
  • the resource block configuration in the TFRP is shown in Figure 3.
  • the black grids are the resource blocks that the SUE can occupy, that is, the SUE can transmit data on these resource blocks.
  • the CUE listens to the uplink data according to the uplink timing information.
  • the CUE After the CUE obtains the uplink timing information, it can use the following methods to listen to the uplink data of the SUE. Details are as follows:
  • the CUE listens to the uplink data of the SUE in each transmission time slot according to the uplink timing information.
  • the CUE halves the duration indicated by its own uplink timing information to obtain the target uplink timing information, and then the CUE listens to the SUE's uplink data in every transmission time slot according to the target uplink timing information.
  • the CUE receives the downlink control information sent by the radio access network device, and the downlink control information is used to indicate the first designated time slot when the CUE listens to the uplink data of the SUE; then the CUE Listen to the uplink data of the SUE in the first designated time slot according to its own uplink timing information.
  • the CUE halves the duration indicated by its own uplink timing information to obtain the target uplink timing information; then the CUE receives the downlink control information sent by the radio access network device, and the downlink control information is used to indicate The target designated time slot when the CUE listens to the uplink data of the SUE; then the CUE listens to the uplink data of the SUE in the target designated time slot according to the target uplink timing information.
  • the CUE receives the side-line control information sent by the SUE, and the side-line control information is used to indicate the second designated time slot when the CUE listens to uplink data; then, the CUE follows the uplink timing The information listens to the uplink data of the SUE in the second designated time slot.
  • the CUE halves the duration indicated by its own uplink timing information to obtain the target uplink timing information; then the CUE receives the side control information sent by the SUE, and the side control information is used to indicate the CUE The target designated time slot when listening to uplink data; then, the CUE listens to the SUE's uplink data in the target designated time slot according to the target uplink timing information.
  • the SUE when the SUE sends side control information or radio resource control information to the CUE, the SUE may adopt the following methods:
  • the SUE periodically sends the side control information or radio resource control information to the CUE.
  • the period of time is stipulated by the agreement between SUE and CUE.
  • the SUE will send the side control information or radio resource control information to the CUE after sending the uplink scheduling request. Specifically, the SUE may send the side control information or radio resource control information to the CUE in the next transmission time slot after sending the uplink scheduling request.
  • the radio access network device may allocate an independent resource pool for the CUE and the SUE for data transmission, where the independent resource pool is used for the CUE and the SUE Perform collaborative data transmission.
  • the radio access network device can configure the CUE and the SUE according to the system-level resource pool, thereby reducing the overhead of configuration signaling.
  • the CUE may also obtain the uplink resource of the SUE, and then listen to the uplink data of the SUE according to the uplink resource and the uplink timing information.
  • the CUE can obtain the uplink resources of the SUE, the uplink timing information of the SUE, and its own uplink timing information at the same time.
  • the CUE listens to the uplink data of the SUE, it can choose the best solution by itself. Interception, the specific situation is not limited here.
  • the CUE obtains the uplink resources of the SUE, it may specifically include the following methods:
  • the CUE receives scheduling information sent by the radio access network device, and the scheduling information is used to indicate the uplink resources of the SUE; the CUE obtains the SUE information according to the scheduling information. Uplink resources.
  • the radio access network device schedules the SUE to send uplink data through the scheduling information
  • the scheduling information is simultaneously sent to the CUE, so that the CUE can determine the uplink resources of the SUE and ensure the CUE's listening effect.
  • the CUE receives indication information sent by the radio access network device, where the indication information is used to indicate the resource block location of the SUE in the TFRP.
  • the radio access network device when the uplink resources of the SUE are configured in accordance with TFRP, when the radio access network device notifies the CUE of the resource block location of the SUE in the TFRP, it can precisely control the listening window of the CUE so that the CUE is in It achieves energy saving effect when receiving uplink data of SUE.
  • the CUE forwards the uplink data to the radio access network device.
  • the CUE After the CUE receives the uplink data of the SUE, it forwards the uplink data of the SUE to the radio access network device to achieve synchronization with the uplink data sent by the SUE.
  • the uplink data of the SUE is intercepted and forwarded to the radio access network device. This can effectively ensure that the uplink data sent by the CUE and the SUE can be transmitted for a certain period of time. Synchronization prevents confusion when the radio access network device receives the uplink data of the SUE.
  • the terminal device 400 includes: an acquisition module 401, a listening module 401, and a sending module 403.
  • the terminal device 400 may be the CUE in the foregoing method embodiment, or may be one or more chips in the CUE.
  • the terminal device 400 may be used to perform part or all of the functions of the CUE in the foregoing method embodiment.
  • the acquiring module 401 may be used to perform step 201 in the above method embodiment; the listening module 402 may be used to perform step 203 in the above method embodiment; the sending module 203 may be used to perform step 203 in the above method embodiment ⁇ 204.
  • the obtaining module 401 is configured to obtain uplink timing information, where the uplink timing information is the uplink timing information of the CUE itself or the uplink timing information is the uplink timing information of the source user equipment SUE; the listening module 402 is configured to Listen to the uplink data of the SUE according to the uplink timing information; the sending module 403 is configured to send the uplink data to the radio access network device.
  • the listening module 402 is configured to listen to the uplink data of the SUE in each transmission time slot according to the uplink timing information; or, receive the downlink control sent by the radio access network device Information, the downlink control information is used to indicate the first designated time slot when the CUE listens to uplink data; to listen to the uplink data of the SUE in the first designated time slot according to the uplink timing information; or, Receive side-line control information sent by the SUE, where the side-line control information is used to indicate the second designated time slot when the CUE listens to uplink data; according to the uplink timing information, the second designated time slot Listening to the uplink data of the SUE; or listening to the uplink data of the SUE according to target uplink timing information, where the duration indicated by the target uplink timing information is half of the duration indicated by the uplink timing information.
  • the terminal device 400 further includes a storage module, which is coupled to the interception module, so that the interception module can execute the computer-executable instructions stored in the storage module to implement the function of the CUE in the foregoing method embodiment.
  • the storage module optionally included in the terminal device 400 may be a storage unit in the chip, such as a register, a cache, etc., and the storage module may also be a storage unit located outside the chip, such as a read-only memory (read-only memory). -only memory, ROM for short) or other types of static storage devices that can store static information and instructions, random access memory (RAM for short), etc.
  • FIG. 5 shows a schematic diagram of a possible structure of a terminal device 500 in the foregoing embodiment.
  • the terminal device 500 may be configured as the aforementioned CUE.
  • the terminal device 500 may include: a processor 502, a computer-readable storage medium/memory 503, a transceiver 504, an input device 505 and an output device 506, and a bus 501.
  • the processor, transceiver, computer-readable storage medium, etc. are connected by a bus.
  • the embodiments of the present application do not limit the specific connection medium between the foregoing components.
  • the transceiver 504 is configured to obtain uplink timing information, where the uplink timing information is the uplink timing information of the CUE itself or the uplink timing information is the uplink timing information of the source user equipment SUE;
  • the processor 502 is configured to listen to the uplink data of the SUE according to the uplink timing information
  • the transceiver 504 is configured to send the uplink data to the wireless access network device.
  • the processor 502 may include a baseband circuit.
  • the data may be encapsulated and encoded according to a protocol to generate a data packet.
  • the transceiver 504 may include a radio frequency circuit to perform processing such as modulation and amplification on the data packet before sending it to the wireless access network device.
  • the processor 502 may run an operating system to control functions between various devices and devices.
  • the transceiver 504 may include a baseband circuit and a radio frequency circuit.
  • the data packet may be processed by the baseband circuit and the radio frequency circuit and sent to the wireless access network device.
  • the transceiver 504 and the processor 502 can implement the corresponding steps in any of the above-mentioned embodiments in FIG. 2, and details are not described here.
  • Figure 5 only shows the simplified design of the CUE.
  • the CUE can include any number of transceivers, processors, memories, etc., and all the CUEs that can implement this application are in this application. Within the scope of protection.
  • the processor 502 involved in the aforementioned terminal device 500 may be a general-purpose processor, such as a general-purpose central processing unit (CPU), a network processor (NP), a microprocessor, etc., or may be an application-specific integrated circuit (application-specific integrated circuit). specific integrated circBIt, ASIC), or one or more integrated circuits used to control the execution of the program of this application. It may also be a digital signal processor (DSP), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, or discrete hardware components.
  • DSP digital signal processor
  • FPGA field-programmable gate array
  • the controller/processor may also be a combination for realizing computing functions, for example, including a combination of one or more microprocessors, a combination of DSP and microprocessor, and so on.
  • the processor usually executes logic and arithmetic operations based on program instructions stored in the memory.
  • the aforementioned bus 501 may be a peripheral component interconnect standard (peripheral component interconnect, PCI for short) bus or an extended industry standard architecture (EISA) bus, etc.
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used to represent in FIG. 5, but it does not mean that there is only one bus or one type of bus.
  • the aforementioned computer-readable storage medium/memory 503 may also store an operating system and other application programs.
  • the program may include program code, and the program code includes computer operation instructions.
  • the above-mentioned memory may be read-only memory (ROM), other types of static storage devices that can store static information and instructions, random access memory (RAM), information that can be stored, and other types of static storage devices. Instructions for other types of dynamic storage devices, disk storage, etc.
  • the memory 503 may be a combination of the storage types described above.
  • the above-mentioned computer-readable storage medium/memory may be in the processor, may also be external to the processor, or distributed on multiple entities including the processor or processing circuit.
  • the aforementioned computer-readable storage medium/memory may be embodied in a computer program product.
  • the computer program product may include a computer-readable medium in packaging materials.
  • the embodiments of the present application also provide a general-purpose processing system, for example, commonly referred to as a chip.
  • the general-purpose processing system includes: one or more microprocessors that provide processor functions; and an external memory that provides at least a part of a storage medium , All of these are connected with other supporting circuits through the external bus architecture.
  • the processor is caused to execute part or all of the steps in the data transmission method of the CUE in the embodiment of FIG. 2 and/or other processes used in the technology described in this application.
  • the steps of the method or algorithm described in combination with the disclosure of this application can be implemented in a hardware manner, or can be implemented in a manner in which a processor executes software instructions.
  • Software instructions can be composed of corresponding software modules, which can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, mobile hard disk, CD-ROM or any other form of storage known in the art Medium.
  • An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and can write information to the storage medium.
  • the storage medium may also be an integral part of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the ASIC may be located in the terminal device.
  • the processor and the storage medium may also exist as discrete components in the terminal device.
  • An embodiment of the communication system in the embodiment of the present application includes:
  • the first terminal device 601, the second terminal device 602, and the wireless access network device 603 implement data transmission through a network system
  • the first terminal device 601 has all the functions of the CUE in FIG. 2
  • the second terminal device 602 has all the functions of the SUE in FIG. 2
  • the radio access network device 603 has all the functions of the radio access network device in FIG. 2.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, 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 may 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 be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, 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.
  • 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 technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes. .

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

Abstract

Les modes de réalisation de la présente invention concernent un procédé et un appareil de transmission de données, qui sont utilisés pour assurer la synchronisation temporelle d'un côté réception en liaison montante lorsque des données sont transmises entre un CUE, un SUE et une station de base dans un scénario UC. Le procédé selon les modes de réalisation de la présente invention comprend les étapes suivantes : au cours d'un processus de transmission de données, un CUE acquiert ses propres informations de synchronisation en liaison montante ou acquiert des informations de synchronisation en liaison montante d'un SUE ; puis le CUE contrôle, en fonction des informations de synchronisation en liaison montante, des données sortantes envoyées par le SUE à un dispositif de réseau d'accès sans fil ; enfin, après obtention des données sortantes, le CUE transmet les données sortantes au dispositif de réseau d'accès sans fil en fonction de ses propres informations de synchronisation en liaison montante ou des informations de synchronisation en liaison montante du SUE.
PCT/CN2020/111001 2019-08-30 2020-08-25 Procédé et appareil de transmission de données Ceased WO2021037014A1 (fr)

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