WO2021134677A1 - 一种数据传输方法、装置和系统 - Google Patents

一种数据传输方法、装置和系统 Download PDF

Info

Publication number
WO2021134677A1
WO2021134677A1 PCT/CN2019/130914 CN2019130914W WO2021134677A1 WO 2021134677 A1 WO2021134677 A1 WO 2021134677A1 CN 2019130914 W CN2019130914 W CN 2019130914W WO 2021134677 A1 WO2021134677 A1 WO 2021134677A1
Authority
WO
WIPO (PCT)
Prior art keywords
value
indicate
relay
channel quality
parameter
Prior art date
Application number
PCT/CN2019/130914
Other languages
English (en)
French (fr)
Inventor
科莱恩保罗·瓦朗特
张磊
赵国栋
伊姆兰·穆罕默德
苏宏家
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
Priority to CN201980103335.7A priority Critical patent/CN114902736A/zh
Priority to PCT/CN2019/130914 priority patent/WO2021134677A1/zh
Publication of WO2021134677A1 publication Critical patent/WO2021134677A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update

Definitions

  • This application relates to the field of communication technology, and in particular to a data transmission method, device, and system.
  • V2X communication refers to the communication between a vehicle and anything outside, including vehicle-to-vehicle communication (V2V), vehicle-to-pedestrian communication (Vehicle to Pedestrian, Referred to as V2P), vehicle to infrastructure communication (Vehicle to Infrastructure, referred to as V2I), vehicle to network communication (Vehicle to Network, referred to as V2N).
  • V2V vehicle-to-vehicle communication
  • V2I vehicle to Infrastructure
  • V2N vehicle to Network
  • the link between the vehicle user and the vehicle user, the pedestrian user and the roadside unit is called a side link (Sidelink, SL for short), and its air interface (Air Interface) is also called a PC-5 air interface.
  • the link between the vehicle user and the network device becomes a downlink (DL) or an uplink (UL), and its air interface (Air Interface) is also called a Uu air interface.
  • DL downlink
  • UL uplink
  • Air Interface Air Interface
  • LTE V2X communication can support communication scenarios with and without network coverage, and its resource allocation method can adopt the network access equipment scheduling mode, such as E-UTRAN NodeB (eNB) scheduling Mode, it can also adopt the mode in which users independently select resources.
  • eNB E-UTRAN NodeB
  • UE-to-UE and UE-to-network relay (relay) related technologies are defined.
  • the source source
  • the UE forwards the data to the relay UE (relay UE) through the side link, and the relay UE relays the data to the destination UE or the target network device. Since the relay UE is uniquely determined, when the quality of the link between the relay UE and the target UE or the target network device is not good, it may lead to re-selection of the relay UE and re-establish the data link, thereby improving the reliability of the relay transmission And time delay brings problems.
  • the embodiment of the present invention provides a data transmission method to improve the reliability of relay transmission of user equipment.
  • a data transmission method which can be executed by a first terminal device or a chip of the first terminal device, including: the first terminal device receives the first data from the second terminal device; When the relay transmission of the three devices meets the relay condition, the first terminal device sends the first data to the third device.
  • the first terminal device as a relay after the first terminal device as a relay establishes the second wireless data link with the third device, it needs to confirm that the relay transmission to the third device meets the relay conditions before sending the relay to the third device.
  • the device sends data to be relayed, it can be relayed according to the actual status of the established data link, thereby improving the reliability of relay transmission and improving the utilization of system resources.
  • the confirming that the relay transmission to the third device satisfies the relay condition includes:
  • the first terminal device receives target channel quality indication information, where the target channel quality indication information indicates the target channel quality
  • the first terminal device When the first parameter meets the target channel quality, the first terminal device confirms that the relay transmission to the third device meets the relay condition, and the first parameter is used to indicate the communication between the first terminal device and the third device The channel quality of the second wireless data link.
  • the first terminal device confirms whether the relay conditions are met according to the configuration parameters of the third device or network device, which can improve the efficiency of relay transmission, and reduce unnecessary delays when reliability and delay are met.
  • the number of relay transmissions thereby reducing the use of unnecessary relay resources, improving resource utilization, and reducing interference to other users at the same time.
  • the target channel quality includes a first value, and the first value is used to indicate target retransmission resource information; the first parameter includes a second value, and the second value is used to indicate all The retransmission resource information of the second wireless data link;
  • the first parameter meeting the target channel quality includes:
  • the second value is less than or equal to the first value.
  • the target channel quality includes a first value and a third value, the first value is used to indicate target retransmission resource information, and the third value is used to indicate target transmission window resource information;
  • the first parameter includes a second value and a fourth value, the second value is used to indicate the retransmission resource information of the second wireless data link, and the fourth value is used to indicate the second wireless data link Transmission window resource information of the road;
  • the first parameter meeting the target channel quality includes:
  • the second value is less than or equal to the first value
  • the fourth value is greater than or equal to the third value
  • the confirming that the relay transmission to the third device satisfies the relay condition includes:
  • the first terminal device When the first terminal device receives the first instruction information sent by the third device or the network device, it confirms that the relay transmission to the third device satisfies the relay condition; wherein, the first instruction information is used to indicate to the third device The device performs relay transmission to meet the relay conditions.
  • the third device or network device confirms whether the relay conditions are met, and instructs the first terminal device to perform relay transmission.
  • the third device or network device can dynamically or semi-statically adjust to meet the requirements of the relay terminal device.
  • the condition of relay transmission improves the efficiency of relay transmission, and reduces the number of unnecessary relay transmissions while meeting reliability and delay, thereby reducing the use of unnecessary relay resources and improving resource utilization. At the same time, the interference to other users is reduced.
  • the method also includes:
  • the first terminal device When the relay transmission to the third device does not meet the relay condition, the first terminal device does not send the first data to the third device.
  • the first terminal device when the first parameter does not meet the target channel quality, the first terminal device confirms that the relay transmission to the third device does not meet the relay condition, and the first parameter is used to indicate the first terminal The channel quality of the second wireless data link between the device and the third device.
  • the target channel quality includes a first value, and the first value is used to indicate target retransmission resource information; the first parameter includes a second value, and the second value is used to indicate all The retransmission resource information of the second wireless data link;
  • the first value that does not meet the target channel quality includes:
  • the second value is greater than the first value.
  • the target channel quality includes a first value and a third value, the first value is used to indicate target retransmission resource information, and the third value is used to indicate target transmission window resource information;
  • the first parameter includes a second value and a fourth value, the second value is used to indicate the retransmission resource information of the second wireless data link, and the fourth value is used to indicate the second wireless data link Transmission window resource information of the road;
  • the first value that does not meet the target channel quality includes:
  • the second value is greater than the first value
  • the fourth value is greater than the third value
  • the first terminal device when the first terminal device receives the second indication information sent by the third device or the network device, it is confirmed that the relay transmission to the third device does not meet the relay condition; wherein, the second The indication information is used to indicate that the relay transmission to the third device does not meet the relay conditions; or
  • the first terminal device does not receive the first instruction information sent by the third device or the network device, it confirms that the relay transmission to the third device does not meet the relay condition; wherein, the first instruction information is used to indicate all The second wireless data link satisfies the forwarding condition.
  • the first terminal device sending the first data to the third device through the second wireless data link includes:
  • the first terminal device obtains time window parameters and retransmission resource information
  • a data transmission method which can be executed by a third device or network device or a chip of the third device or network device, and includes: obtaining a first parameter, where the first parameter is used to indicate the first parameter.
  • the third device or network device confirms whether the relay conditions are met, and instructs the first terminal device to perform relay transmission.
  • the third device or network device can dynamically or semi-statically adjust to meet the requirements of the relay terminal device.
  • the condition of relay transmission improves the efficiency of relay transmission, and reduces the number of unnecessary relay transmissions while meeting reliability and delay, thereby reducing the use of unnecessary relay resources and improving resource utilization. At the same time, the interference to other users is reduced.
  • the target channel quality includes a first value, and the first value is used to indicate target retransmission resource information; the first parameter includes a second value, and the second value is used to indicate all The retransmission resource information of the second wireless data link;
  • the first parameter meeting the target channel quality includes:
  • the second value is less than or equal to the first value.
  • the target channel quality includes a first value and a third value, the first value is used to indicate target retransmission resource information, and the third value is used to indicate target transmission window resource information;
  • the first parameter includes a second value and a fourth value, the second value is used to indicate the retransmission resource information of the second wireless data link, and the fourth value is used to indicate the second wireless data link Transmission window resource information of the road;
  • the first parameter meeting the target channel quality includes:
  • the second value is less than or equal to the first value
  • the fourth value is greater than or equal to the third value
  • the method also includes:
  • the target channel quality includes a first value, and the first value is used to indicate target retransmission resource information; the first parameter includes a second value, and the second value is used to indicate all The retransmission resource information of the second wireless data link;
  • the first parameter that does not meet the target channel quality includes:
  • the second value is greater than the first value.
  • the target channel quality includes a first value and a third value, the first value is used to indicate target retransmission resource information, and the third value is used to indicate target transmission window resource information;
  • the first parameter includes a second value and a fourth value, the second value is used to indicate the retransmission resource information of the second wireless data link, and the fourth value is used to indicate the second wireless data link Transmission window resource information of the road;
  • the first parameter that does not meet the target channel quality includes:
  • the second value is greater than the first value, or the fourth value is less than the third value.
  • a data transmission device configured to execute the method in any possible implementation manner of the first aspect.
  • the data transmission apparatus may include a module for executing the method in any possible implementation of the first aspect, for example, including: a receiving unit for receiving first data from a second terminal device; and a sending unit , For sending the first data to the third device when the relay transmission to the third device satisfies the relay condition.
  • the device further includes: a processing unit configured to confirm whether the relay transmission to the third device satisfies the relay condition.
  • the above-mentioned data transmission device may be a terminal device that functions as a relay.
  • the data transmission device of the third aspect may refer to the implementation described in the method of the first aspect above, and use the same or similar technical means to achieve the same or similar technical effects, and details are not repeated here.
  • a data transmission device configured to execute the method in any possible implementation manner of the second aspect.
  • the data transmission device may include a module for executing the method in any possible implementation manner of the second aspect, for example, a processing unit configured to obtain a first parameter, and the first parameter is used to indicate The channel quality of the second wireless data link between the first terminal device and the third device; a sending unit, configured to send first indication information to the first terminal device when the first parameter meets the target channel quality; wherein The first indication information is used to indicate that the first terminal device performs relay transmission to the third device to satisfy a relay condition.
  • the sending unit is further configured to: when the first parameter does not meet the target channel quality, send second indication information to the first terminal device; wherein, the second indication information is used to indicate the The relay transmission by a terminal device to the third device does not satisfy the relay condition.
  • the above-mentioned data transmission device may be a terminal device or a network device.
  • the data transmission device of the fourth aspect may refer to the implementation manner set forth in the method of the second aspect above, and use the same or similar technical means to achieve the same or similar technical effects, which will not be repeated here.
  • a communication device including: at least one processor coupled with at least one memory: the at least one processor is configured to execute a computer program or a computer program stored in the at least one memory Instructions to cause the device to execute the method described in the first aspect or any one of the possible designs of the first aspect or the second aspect or any of the second aspects.
  • the embodiments of the present application also provide a computer-readable storage medium with a computer program stored on the computer storage medium.
  • the computer program When the computer program is modified to run on the computer, the computer can execute the first aspect or the first aspect. Any one of the possible designs or the second aspect or the method described in any one of the second aspects.
  • the embodiments of the present application also provide a computer program product.
  • the computer program product includes a computer program.
  • the computer program runs on a computer, the computer executes any one of the first aspect or the first aspect.
  • an embodiment of the present application provides a chip that includes a processor and a communication interface.
  • the processor is used to call and execute instructions from the communication interface.
  • the chip executes The method described in the first aspect or any possible design of the first aspect or the second aspect or any possible design of the second aspect.
  • an embodiment of the present application provides a system that includes at least one device as described in the third aspect or any one of the possible designs of the third aspect, and any one of the fourth aspect or the fourth aspect It is possible to design the device described in the eighth aspect or the chip described in the eighth aspect.
  • Figure 1 is a schematic diagram of a V2X scenario provided by an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of the architecture of a possible communication system provided by an embodiment of this application.
  • FIG. 3 is a flowchart of a data transmission method provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of a time window provided by an embodiment of this application.
  • FIG. 5 is a schematic diagram of a side-line transmission resource provided by an embodiment of this application.
  • FIG. 6 is a flowchart of a method for confirming whether a relay condition is met according to an embodiment of the application
  • FIG. 7 is a flowchart of another method for confirming whether a relay condition is met according to an embodiment of the application.
  • FIG. 8 is a flowchart of another data transmission method provided by an embodiment of this application.
  • FIG. 9 is a schematic diagram of data transmission according to an embodiment of the application.
  • FIG. 10 is a schematic diagram of another data transmission provided by an embodiment of this application.
  • FIG. 11 is a schematic diagram of data transmission according to an embodiment of the application.
  • FIG. 12 is a schematic diagram of data transmission according to an embodiment of the application.
  • FIG. 13 is a schematic diagram of data transmission provided by an embodiment of this application.
  • FIG. 14 is a schematic structural diagram of a transmission device provided by an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of another transmission device provided by an embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of an apparatus 900 provided by an embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of an apparatus 1000 provided by an embodiment of the present application.
  • Terminal devices including devices that provide users with voice and/or data connectivity, specifically, include devices that provide users with voice, or include devices that provide users with data connectivity, or include devices that provide users with voice and data connectivity Sexual equipment.
  • it may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem.
  • the terminal device can communicate with the core network via a radio access network (RAN), exchange voice or data with the RAN, or exchange voice and data with the RAN.
  • the terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, D2D terminal equipment, V2X terminal equipment, machine-to-machine/machine-type communications (machine-to-machine/machine-type communications, M2M).
  • IoT internet of things
  • IoT internet of things
  • subscriber unit subscriber station, mobile station, remote station, access point ( access point (AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device), etc.
  • AP access point
  • remote terminal remote terminal
  • access terminal access terminal
  • user terminal user terminal
  • user agent user agent
  • user equipment user device
  • PCS personal communication service
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • restricted devices such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.
  • RFID radio frequency identification
  • GPS global positioning system
  • laser scanners and other information sensing equipment.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait.
  • 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 kind of 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.
  • Use such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
  • the various terminal devices described above if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be regarded as vehicle-mounted terminal equipment, for example, the vehicle-mounted terminal equipment is also called on-board unit (OBU). ).
  • OBU on-board unit
  • the terminal device may also include a relay terminal device (relay UE).
  • relay UE relay terminal device
  • everything that can communicate with the base station can be regarded as a terminal device.
  • the device for realizing the function of the terminal device may be a terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system, and the device may be installed in the terminal device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the device for realizing the functions of the terminal is a terminal device as an example to describe the technical solutions provided by the embodiments of the present application.
  • Network equipment including, for example, access network (AN) equipment, such as a base station (e.g., access point), which may refer to equipment that communicates with wireless terminal equipment through one or more cells on the air interface in the access network
  • AN access network
  • the network device in the V2X technology is a roadside unit (RSU).
  • the base station can be used to convert the received air frame and IP packet to each other, as a router between the terminal device and the rest of the access network, where the rest of the access network can include the IP network.
  • the RSU can be a fixed infrastructure entity that supports V2X applications, and can exchange messages with other entities that support V2X applications.
  • the network equipment can also coordinate the attribute management of the air interface.
  • the network equipment may include a long term evolution (LTE) system or an evolved base station (NodeB or eNB or e-NodeB, evolutional NodeB) in a long term evolution-advanced (LTE-A) system, Or it can also include the next generation node B (gNB) in the new radio (NR) system (also referred to as the NR system) in the 5th generation (5G) mobile communication technology (the 5th generation, 5G), or it can also Including a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (cloud radio access network, Cloud RAN) system, which is not limited in the embodiment of the present application.
  • LTE long term evolution
  • NodeB or eNB or e-NodeB, evolutional NodeB evolutional NodeB
  • LTE-A long term evolution-advanced
  • gNB next generation node B
  • NR new radio
  • 5G 5th generation
  • 5G 5th generation
  • CU centralized
  • the network equipment may also include core network equipment.
  • the core network equipment includes, for example, access and mobility management functions (AMF). Since the embodiments of the present application do not involve the core network, unless otherwise specified in the following text, the network devices mentioned all refer to the access network devices.
  • AMF access and mobility management functions
  • the device used to implement the function of the network device may be a network device, or a device capable of supporting the network device to implement the function, such as a chip system, and the device may be installed in the network device.
  • the device used to implement the functions of the network equipment is a network device as an example to describe the technical solutions provided in the embodiments of the present application.
  • V2X communication refers to the communication between the vehicle and external equipment.
  • V2X communication can support communication scenarios with and without network coverage, and its resource allocation method can adopt the network access equipment scheduling mode, such as E-UTRAN NodeB (eNB) scheduling mode , You can also use the mode that users choose resources independently.
  • vehicle users Vehicle UE, referred to as V-UE
  • V-UE vehicle users
  • V-UE Vehicle UE
  • V-UE Vehicle UE
  • V-UE Vehicle UE
  • V-UE Vehicle UE
  • V-UE Vehicle UE
  • V-UE Vehicle UE
  • Information is sent to surrounding V-UEs, and similarly, V-UEs will also receive information from surrounding users in real time. Complete direct communication between vehicle users.
  • vehicle communication belongs to terminal device-to-terminal device communication
  • terminal device-to-terminal device communication refers to direct communication between terminal devices without data transfer through network devices.
  • the technology of vehicle communication can be used for communication between the terminal and the terminal device.
  • the communication between the terminal and the terminal device can be used for the vehicle communication.
  • vehicle communication and terminal equipment and terminal equipment communication can be replaced with each other.
  • V2X specifically includes vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P) direct communication, and There are several application requirements such as vehicle-to-network (V2N) communication and interaction.
  • V2V refers to the communication between vehicles
  • V2P refers to the communication between vehicles and people (including pedestrians, cyclists, drivers, or passengers)
  • V2I refers to the communication between vehicles and network equipment, such as RSU
  • V2N refers to the communication between the vehicle and the base station/network.
  • V2P can be used as a safety warning for pedestrians or non-motorized vehicles on the road.
  • vehicles can communicate with roads and even other infrastructure, such as traffic lights, roadblocks, etc., to obtain road management information such as traffic light signal timing.
  • V2V can be used for information interaction and reminding between vehicles, and the most typical application is for the anti-collision safety system between vehicles.
  • V2N is currently the most widely used form of Internet of Vehicles. Its main function is to connect vehicles to a cloud server through a mobile network, and use the navigation, entertainment, or anti-theft application functions provided by the cloud server.
  • V2X it is mainly the communication between terminal equipment and terminal equipment.
  • the current standard protocol supports broadcast, multicast, and unicast.
  • the broadcast mode means that the terminal device as the sender uses broadcast mode to send data, and multiple terminal device ends can receive sidelink control information (SCI) and/or sidelink from the sender Road shared channel (sidelink shared channel, SSCH). It should be understood that in broadcast transmission, the terminal device at the sending end cannot know which terminal devices will receive the broadcast data sent.
  • SCI sidelink control information
  • SSCH sidelink shared channel
  • the way to ensure that all terminal devices parse the control information from the sender is that the sender does not scramble the CRC of the control information, or the sender uses a sequence or identification pair known to all terminal devices. CRC scrambling of control information.
  • the multicast mode is similar to broadcast transmission.
  • the terminal equipment as the transmitting end uses the broadcast mode for data transmission, and a group of terminal equipment can parse SCI and/or SSCH.
  • the sender and receiver of the multicast are known to each other, and the corresponding group ID can be obtained.
  • the multicast sender cannot know which terminal devices will receive the sent multicast data, but some terminal devices can be restricted to receive the sent multicast data based on some information, for example, at a certain distance from the sender The terminal devices within the range can receive the multicast data sent.
  • the unicast mode is that one terminal device sends data to another terminal device, and other terminal devices do not need or cannot parse the data.
  • Sidelink refers to the link between the terminal device and the terminal device.
  • the uplink refers to the link through which the terminal device transmits information to the network device
  • the downlink refers to the link through which the terminal device receives information from the network device.
  • the link between vehicle equipment (vehicle equipment also belongs to user equipment) is called side-travel link, and vehicle communication can also be referred to as side-travel communication.
  • the time-frequency resource where the side-line communication is located is called a resource pool, that is, the frequency domain includes several sub-channels, and each sub-channel includes several physical resource blocks.
  • the time domain includes at least one time unit of several time slots (slots), subframes (subframes), and mini-slots (mini-slots).
  • the sending end UE and the receiving end UE perform side-line communication in the resource pool.
  • the configuration information of the sending resource pool of the sending end UE and the receiving resource pool of the receiving end UE are the same, and the configuration information includes, but is not limited to, physical resource configuration information Including the number of sub-channels, the size of sub-channels, time-domain slot configuration information, retransmission resource information (including demodulation reference signal configuration information, modulation and coding scheme configuration information), physical side control information configuration information (for example, physical side Time domain length information of line control information, frequency domain length information of physical side line control information), physical side line feedback channel resource configuration information (such as the existence period of the physical side line feedback channel, physical side line shared channel-physical side line feedback Channel feedback duration), power control related information and other basic configuration information used for communication.
  • physical resource configuration information Including the number of sub-channels, the size of sub-channels, time-domain slot configuration information, retransmission resource information (including demodulation reference signal configuration information, modulation and coding scheme configuration information), physical side control information configuration information (for example, physical side Time domain length information of line control information, frequency
  • At least one means one or more, and “plurality” means 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 before and after 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 a plurality of items (a).
  • at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • the ordinal numbers such as “first” and “second” mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the size, content, order, and timing of multiple objects. , Priority or importance, etc.
  • the first network device and the second network device are only used to distinguish different network devices, but do not indicate the difference in priority or importance of the two pieces of information.
  • the embodiments of the present application can be applied to various communication systems, such as: V2X, D2D (device), Internet of Vehicles, Internet-connected vehicles, Intelligent Internet-connected vehicles, intelligent driving, driving assistance, and device-to-device communication and other direct communication fields.
  • V2X V2X
  • D2D device
  • Internet of Vehicles Internet-connected vehicles
  • Intelligent Internet-connected vehicles Intelligent driving, driving assistance, and device-to-device communication and other direct communication fields.
  • a wireless network system includes: a first terminal device 11, at least two second terminal devices 12 and a third device 13.
  • the first terminal device 11 has established wireless data links with at least two second terminal devices 12 respectively, and the at least two second terminal devices 12 have established wireless data links with the third device 13 respectively.
  • the first terminal device is the source terminal device
  • the second terminal device is the relay terminal device
  • the third device is the target device.
  • At least one second terminal device is used to relay data from the first network device to the third device.
  • the resource allocation mode of the wireless network system may adopt a network access device (for example, gNB) scheduling mode, or a mode in which users independently select resources.
  • the third device can be a terminal device or a network device.
  • the first terminal device when the first terminal device needs to relay data to the third device through the relay terminal device, there is a first wireless data link between the first terminal device and at least two second terminal devices, and each second terminal device There is a second wireless data link with the third device respectively.
  • the first terminal device sends the data to be relayed to at least two second terminal devices.
  • the second terminal device receives the data to be relayed, it sends the data to be relayed to the third device when confirming the predetermined condition.
  • the second terminal device when receiving the instruction information for relaying data to the third device, sends the data to be relayed to the third device.
  • the second terminal device receives the indication information of the target channel quality, and sends the data to be relayed to the third device when the channel quality of the second wireless data link meets the target channel quality.
  • a first terminal device will determine at least two second terminal devices that provide a relay function, and establish data links respectively.
  • the second terminal device determines whether to send the data to be relayed according to the channel quality of the data link with the third device, and can flexibly dynamically or semi-statically select at least one data link with good channel quality as data relay. Thereby improving the reliability of data transmission. Reduce reliability and delay problems caused by re-establishment and selection of relay terminal equipment, and improve resource utilization.
  • the first terminal device, the second terminal device, and the target terminal device may be a vehicle terminal, for example, a vehicle-mounted communication module or other embedded communication modules.
  • the side-travel communication is realized between the vehicle terminals through the side-travel link.
  • relaying refers to the first device sending data from the third device to the second device, which has the same meaning as forwarding and sending.
  • an embodiment of a data transmission method provided by the present invention includes:
  • the first terminal device receives first data from the second terminal device
  • the first data is data that needs to be relayed by the first terminal device
  • the second terminal device is the source terminal device
  • the first terminal device is the relay device of the second terminal device.
  • the first terminal device may receive the first data through the first wireless data link established with the second terminal device.
  • the first terminal device Before relaying the first data, the first terminal device has established a wireless data link with the second terminal device and the third device respectively. A second wireless data link is established between the first terminal device and the third device. The first terminal device sends the first data to the third device through the second wireless data link.
  • the first terminal device receives target channel quality indicator information, where the target channel quality indicator information indicates the target channel quality; when the first parameter meets the target channel quality, the first terminal device confirms to relay to the third device The transmission satisfies a relay condition, and the first parameter is used to indicate the channel quality of the second wireless data link between the first terminal device and the third device.
  • the first terminal device receives the first indication information sent by the third device or the network device, and confirms that the second wireless data link between the first terminal device and the third device meets the relay condition. The first indication information is used to indicate that the relay transmission to the third device satisfies the relay condition. It is understandable that these two implementation manners can replace step 202.
  • S203 The third device receives the first data through the second wireless data link.
  • the third device may be a network device or a third terminal device. That is, the first terminal device may serve as a relay of the second terminal device to send the first data to be relayed to the network device or the third terminal device.
  • the first terminal device as a relay after the first terminal device as a relay establishes the second wireless data link with the third device, it needs to confirm that the relay transmission to the third device meets the relay conditions before sending the relay to the third device.
  • the device sends data to be relayed, it can be relayed according to the actual status of the established data link, thereby improving the reliability of relay transmission and improving the utilization of system resources.
  • the first terminal device sending the first data to the third device through the second wireless data link includes: the first terminal device Obtain time window parameters and retransmission resource information; according to the time window parameters and retransmission resource information, send the first data to the third device through the second wireless data link.
  • the time window parameter indicates a time unit for the first terminal device to send data on the second wireless data link.
  • the retransmission resource information indicates the number of retransmitted data in the data sent in the time unit, and the retransmitted data refers to the same data in the data transmitted in the time unit as the data transmitted in the previous time unit.
  • the time unit may be a time slot, mini-slot or subframe or other time unit.
  • the transmission window resource information may be a time window parameter W, and the retransmission resource information may be a retransmission parameter P and/or a transmission parameter K.
  • the time window parameter W is used to indicate the resource size when the first terminal device performs sideline information transmission.
  • the resource for the first terminal device to transmit sideline information is in the time domain and may include one or more time units.
  • the time unit may be a symbol, several symbols, a time slot, a subframe, etc.
  • One or more time units can be continuous in physical time or discrete; in the frequency domain, it includes one or more frequency domain units, which can be a subchannel and an RB. Or several RBs.
  • the one sub-channel is composed of one or more resource blocks (RB).
  • the resource for the first terminal device to transmit sideline information may be W time slots after time slot n, and the W time slots are used to transmit W transport blocks (TB). ), that is, 1 TB is transmitted on a slot.
  • the resource for the first terminal device to transmit side line information may be to transmit W code blocks (CB) in 1 time slot after time slot n.
  • One TB can consist of one or more CBs.
  • the following uses W time slots to transmit W TBs as an example to describe this solution. In practical applications, other transmission solutions may also be included, which are not limited here.
  • Taking frequency domain units as sub-channels as an example the positions (starting sub-channels and/or the number of sub-channels) of the sub-channels corresponding to each TB that are transmitted in W time slots may be the same or different.
  • the present solution is described by assuming that each of the W time slots is used to transmit the TB and the corresponding sub-channel position is the same. In practical applications, other transmission schemes may also be included, which are not limited here.
  • the time window parameter W may be a time window identified as m determined on the nth time unit, where m and n are integers greater than or equal to 1. The description of frequency domain resources will not be repeated here.
  • the time window parameter W is also used to indicate that the time window W includes W time units for transmitting W TB sideline information.
  • the details are shown in Figure 4.
  • the time window parameter W can indicate that the time window contains 5 time units, and each time unit can transmit one TB, that is to say, the time window parameter W can be 5
  • the resources for the first terminal device to transmit sideline information include a first time window with a time window parameter of W1 and a second time window with a time window parameter of W2.
  • the first time window is the previous time window of the second time window, where the transmission parameter K indicates that the second time window is compared with the previous time window, and the side row information of K TBs in the second time window is initially transmitted.
  • the retransmission parameter P indicates that the side row information of P TBs in the second time window and the previous time window are the same, that is, the first data in the second time window is the same as the first data in the first time window, It can also be understood that the P TBs in the second time window are retransmitted.
  • the retransmitted TB can use different redundancy versions (RV, Redundancy Version), and the receiving end can merge the side line information of P TBs received in the two time windows to improve the decoding success rate, thereby improving the side Reliability of data transmission.
  • the retransmission resource information may be indicated by the retransmission parameter P and/or the transmission parameter K, where the retransmission resource information is implicitly indicated by the transmission parameter K.
  • the parameter in the retransmission resource information may be a parameter P or a parameter K, and P and K may be calculated from M-K and M-P, respectively.
  • the transmission parameter K is the number of TBs initially transmitted in the side row information of W TBs transmitted in the time window.
  • W is a fixed value
  • the transmission parameter can also be called the Freshness Factor.
  • W and K are integers, W ⁇ 1, 0 ⁇ K ⁇ M.
  • the time window parameters and retransmission resource information are determined based on the actual state of the channel, so the time window parameters and retransmission resource information determined at different times can be different, so the unnecessary blind retransmissions caused by the fixed number of blind retransmissions are reduced.
  • the retransmission of data does not rely on the physical response information, which avoids the consumption of time-frequency resources required to carry the response information and reduces the delay of service transmission. .
  • this embodiment further includes:
  • the first terminal device receives target channel quality indication information, where the target channel quality indication information indicates the target channel quality; when the first parameter does not meet the target channel quality, the first terminal device confirms that it is in progress to the third device If the subsequent transmission does not meet the relay condition, the first parameter is used to indicate the channel quality of the second wireless data link between the first terminal device and the third device.
  • the first terminal device receives the second indication information sent by the third device or the network device, and confirms that the second wireless data link between the first terminal device and the third device does not meet the relay condition. The second indication information is used to indicate that the relay transmission to the third device does not meet the relay condition. It is understandable that these two implementation manners can replace step 204.
  • the target user or network equipment can dynamically or semi-statically adjust to meet the relay transmission conditions of the relay terminal equipment to improve the relay transmission.
  • the efficiency while meeting reliability and time delay, reduces the number of unnecessary relay transmissions, thereby reducing the use of unnecessary relay resources, improving resource utilization, and reducing interference to other users.
  • this embodiment may further include:
  • the first terminal device sends the initial transmission of the data to be relayed to the third device, that is, the data to be relayed performs a relay transmission.
  • a relay transmission is performed first, which can prevent multiple first terminal devices from not having a first terminal device because they do not know how many terminal devices are used as relays. Possibility to perform relay transmission.
  • Implementation manner 1 The first terminal device confirms according to the target channel quality indication information that the relay transmission to the third device does not meet the relay condition.
  • the method may include the following steps:
  • the third device sends a first parameter to the first terminal device, where the first parameter is used to indicate the channel quality of the second wireless data link between the first terminal device and the third device;
  • the first parameter may be carried by at least one of side control information, RRC signaling, and MAC CE.
  • the first terminal device receives the first parameter, and obtains the channel quality of the second wireless data link;
  • the first terminal device receives target channel quality indication information sent by the network device or the third device, where the target channel quality indication information indicates the target channel quality;
  • the first terminal device obtains the target channel quality according to the target channel quality indication information.
  • the target channel quality indication information may be carried by at least one of downlink control information, side control information, RRC signaling, and MAC CE.
  • S604 The first terminal device confirms whether the first parameter meets the target channel quality.
  • the first terminal device When the first parameter meets the target channel quality, the first terminal device confirms that the relay transmission to the third device meets the relay condition; when the first parameter does not meet the target channel quality, the first terminal device confirms that the transmission to the third device is in progress The subsequent transmission meets the relay conditions.
  • the target channel quality includes a first value, and the first value is used to indicate target retransmission resource information; the first parameter includes a second value, and the second value is used to indicate the first value.
  • Retransmission resource information of the wireless data link; the first parameter meeting the target channel quality includes: the second value is less than or equal to the first value.
  • the first terminal device only obtains the target retransmission resource information, and judges the relay condition according to the target retransmission resource information.
  • the first terminal device obtains the target retransmission resource information and other information (for example, transmission window resource information), but still only judges the relay condition based on the target retransmission resource information.
  • the target channel quality includes a first value and a third value, the first value is used to indicate target retransmission resource information, and the third value is used to indicate target transmission window resource information;
  • the first parameter includes a second value and a fourth value, the second value is used to indicate the retransmission resource information of the second wireless data link, and the fourth value is used to indicate the second wireless data link.
  • the first parameter meets the target channel quality including: the second value is less than or equal to the first value, and the fourth value is greater than or equal to the third value.
  • the relay condition is judged based on the target retransmission resource information and the target transmission window resource information.
  • the first terminal device confirms whether the relay conditions are met according to the configuration parameters of the third device or network device, which can improve the efficiency of relay transmission, and reduce unnecessary delays when reliability and delay are met.
  • the number of relay transmissions thereby reducing the use of unnecessary relay resources, improving resource utilization, and reducing interference to other users at the same time.
  • Implementation manner 2 The third device or the network device confirms whether the relay transmission to the third device meets the relay condition according to the target channel quality, and sends the indication information of whether the relay condition is satisfied to the first terminal device.
  • the method may include the following steps:
  • a third device or a network device obtains a first parameter, where the first parameter is used to indicate the channel quality of the second wireless data link between the first terminal device and the third device;
  • the third device or the network device obtains the channel quality of the second wireless data link
  • the third device obtains the first parameter. If this step is performed by a network device, the network device receives the first parameter sent by the third device.
  • S702 The third device or network device obtains the target channel quality
  • S703 The third device or network device confirms whether the first parameter meets the target channel quality.
  • the third device or network device When the first parameter meets the target channel quality, the third device or network device confirms that the relay transmission to the third device meets the relay condition, and sends the first indication information to the first terminal device; in the first parameter When the target channel quality is not met, the third device or the network device confirms that the relay transmission to the third device does not meet the relay condition, and sends the second indication information to the first terminal device.
  • the first indication information is used to indicate that the relay transmission to the third device meets the relay condition; the second indication information is used to indicate that the relay transmission to the third device does not meet the relay condition.
  • the first terminal device When the first terminal device receives the first indication information, it confirms that the relay transmission to the third device satisfies the relay condition; or the first terminal device does not receive the first indication information or receives the second indication information, then confirms Relay transmission to the third device satisfies the relay condition.
  • the first indication information is activation relay transmission notification information
  • the second indication information is deactivation relay transmission notification information
  • the third device or network device confirms whether the relay conditions are met, and instructs the first terminal device to perform relay transmission.
  • the third device or network device can dynamically or semi-statically adjust to meet the requirements of the relay terminal device.
  • the condition of relay transmission improves the efficiency of relay transmission, and reduces the number of unnecessary relay transmissions while meeting reliability and delay, thereby reducing the use of unnecessary relay resources and improving resource utilization. At the same time, the interference to other users is reduced.
  • the first vehicle terminal is the source terminal device and is used to send the first data to the third device;
  • a plurality of second vehicle terminals are relay terminal devices for receiving the first data of the first vehicle terminal;
  • the third device is configured to receive the first data sent by at least one vehicle terminal that meets the condition.
  • the first vehicle terminal and each of the plurality of second vehicle terminals have a first data link; each of the plurality of second vehicle terminals has a second data link with the third device link.
  • the third device may be a third vehicle terminal or a network device.
  • the source terminal device needs to send data to the third device through the relay terminal device, and Relay UE1, Relay UE2, and Relay UE3 are determined as candidate relay terminal devices for relay transmission.
  • network equipment uses system information block (System Information Block, SIB), cell-specific radio resource control (Radio Resource Control, RRC) signaling, or terminal user-level (UE-specific) signaling.
  • SIB System Information Block
  • RRC Radio Resource Control
  • UE-specific terminal user-level
  • RRC signaling configures sidelink (Sidelink, SL for short) resource pool information of the UE in the cell.
  • the user terminal (UE) uses the resource pool (Resource Pool) information pre-configured in the factory of the device. Resource Pool information is used to indicate resource pools.
  • Resource Pool is used to indicate resource pools.
  • the user terminal (UE) performs side-line communication with other UEs in the resource pool, including unicast, multicast, and broadcast communication.
  • TFPR Time Frequency Resource Pattern
  • the time unit can be a symbol, several symbols, a time slot, or a subframe Etc.
  • the one or more time units may be continuous in physical time or discrete; in the frequency domain, it includes one or more frequency domain units, which may be a subchannel ) (The one sub-channel is composed of one or more resource blocks (RB for short)), one RB or several RBs.
  • an embodiment of a data transmission method includes:
  • S801 The source terminal device sends sideline data to be relayed to multiple candidate relay terminal devices.
  • the source terminal device may send the side row data to be relayed to all candidate relay terminal devices, namely Relay UE1, Relay UE2, and Relay UE3 in the form of broadcast, multicast or unicast.
  • the source terminal device determines a time window parameter W and/or the value of the transmission parameter K; if the source terminal device is sent in unicast form to each candidate relay terminal device separately , Then each unicast transmission has a separate time window parameter W and/or transmission parameter K value. Referring to FIG. 9, the source terminal device obtains the time window parameter W from the configuration information of the resource pool, and sends the sideline data to be relayed to the candidate relay device in the form of broadcast or multicast.
  • S802 A plurality of candidate relay terminal devices respectively send initial transmissions of sideline data to be relayed to a third device.
  • the initial transmission in this step means that the relay terminal device sends the sideline data to be relayed to the third device once, and the candidate relay terminal device performs the steps of confirming whether the relay condition is satisfied and subsequent relay transmission.
  • the candidate relay terminal device can perform relay transmission in any of unicast, multicast, and broadcast. If it is sent in the form of broadcast or multicast, the relay terminal device determines a unique time window parameter W and/or the value of the transmission parameter K; if it is sent separately to the third device in the form of unicast, each unicast The transmission has a separate time window parameter W and/or transmission parameter K value. Referring to FIG. 10, the relay terminal device obtains the time window parameter W from the configuration information of the resource pool, and sends the sideline data to be relayed to the candidate relay device in the form of broadcast or multicast.
  • Step S802 is an optional step.
  • Relay UE1, Relay UE2, and Relay UE3 do not transmit to the third device the sideline data to be relayed received from the source terminal device, but only through channel estimation (including channel sensing and channel sensing).
  • the reference signal measurement method is used to determine the time window parameter W and/or the value of the transmission parameter K transmitted to the target wireless device. It is not used here to limit the manner in which the time window parameter W and the transmission parameter K are determined during the initial transmission.
  • S803 A plurality of candidate relay terminal devices respectively determine whether the relay transmission to the third device satisfies the relay condition.
  • the candidate relay terminal device When the relay transmission to the third device satisfies the relay condition, the candidate relay terminal device sends the sideline data to be relayed received from the source terminal device to the third device; when the relay condition is not met, the candidate relay terminal device The terminal device does not transmit the sideline data to be relayed received from the source terminal device to the third device.
  • the candidate relay terminal device confirms whether the relay condition is satisfied according to the target retransmission resource information, and this step includes:
  • the third device separately sends target retransmission resource information to multiple candidate relay terminal devices.
  • the third device determines the number of retransmissions that need to be limited according to QoS service requirements, such as delay requirements, or from the perspective of resource utilization; or determines the number of guaranteed retransmissions from the reliability requirements.
  • the third device may feed back the target time window parameter W and/or the target transmission parameter K value to Relay UE1, Relay UE2, and Relay UE3 through the higher layer (PC5-RRC).
  • the third device may also feed back the target time window parameter W and/or the value of the target transmission parameter K in the physical layer signaling, such as SCI or SFCI. Referring to FIG. 11, the third device sends the time window parameter W and/or the value of the target transmission parameter K to the candidate relay device in the form of broadcast or multicast.
  • the third device sends the target retransmission resource information to the network device, and the network device sends the target retransmission resource information to multiple candidate relay terminal devices respectively.
  • network equipment such as base stations, eNBs, gNBs, or Road Side Units (RSU, Road Side Unit) perform scheduling or assist resource management.
  • the third device sends the target time window parameter W and/or the target transmission parameter K value to the network device via the uplink.
  • the value of the target time window parameter W and/or the target transmission parameter K is carried in RRC signaling, MACCE, or UCI.
  • the network device then informs the candidate relay terminal device of the target time window parameter W and/or the target transmission parameter K value through the downlink.
  • the target time window parameter W and/or the target transmission parameter K value is carried in the RRC signaling, MACCE Or DCI medium.
  • the candidate relay terminal device determines, according to the target retransmission resource information, whether to transmit the sideline data to be relayed received from the source terminal device to the third device.
  • the target time window parameter W and/or the transmission parameter K value is used to activate the candidate relay terminal equipment.
  • At least one UE can use the corresponding time window parameter W and/or the transmission parameter K value for relay transmission, and the deactivation candidate The UE that does not meet the requirements in the subsequent terminal equipment does not perform relay transmission.
  • the candidate relay terminal device confirms whether to activate the relay transmission. For example, relay UE1 does not perform relay transmission, and relay UE2 and relay UE3 perform relay transmission.
  • the target transmission parameter K value used for feedback is 2.
  • There are two operation modes: 1) For the relay UE, if the transmission parameter K of the retransmission resource information between it and the third device is less than or equal to 2, the third device will be used by the third device. Activation is used for relay transmission, and relay according to the actual transmission parameter K value; 2) For the relay UE, if the retransmission resource information transmission parameter K ⁇ 2 between it and the third device, it will be the third The device activation is used for relay transmission, and the relay is performed according to the transmission parameter K value fed back by the third device, that is, the transmission parameter K 2;
  • the candidate relay terminal device confirms whether the relay condition is satisfied according to the target retransmission resource information, and sends the indication information to the candidate relay device.
  • This step includes:
  • the third device or network device makes the judgment based on the target retransmission resource information, and this step includes:
  • the third device reports the target time window parameter W and/or the value of the transmission parameter K to the network device via the uplink;
  • a plurality of candidate relay terminal devices respectively aggregate the time window parameter W and/or the value of the transmission parameter K transmitted with the third device via the uplink to the network device;
  • S8035 The network device compares the target time window parameter W and/or the value of the transmission parameter K with the time window parameter W and/or the value of the transmission parameter K transmitted by the third device to confirm whether the relay condition is met.
  • the network device For candidate terminal devices that meet the relay conditions, the network device activates them for relay transmission through downlink notifications; for candidate terminal devices that do not meet the relay conditions, the network equipment deactivates them for relay transmission through downlink notifications.
  • the network device sends a notification to activate or deactivate the relay transmission to the candidate relay terminal device, for example, to relay UE1 to activate the relay transmission notification, and to relay UE2 and relay UE3 to activate the relay transmission notification. .
  • the activation notification or the deactivation notification may be carried in RRC signaling, MAC CE, or DCI.
  • the third device makes a judgment based on the target retransmission resource information, and this step includes:
  • the third device determines the target time window parameter W and/or the value of the transmission parameter K;
  • the third device compares the target time window parameter W and/or the value of the transmission parameter K with the time window parameter W and/or the value of the transmission parameter K transmitted by the third device to confirm whether the relay condition is met.
  • the third device For a candidate terminal device that meets the relay condition, the third device sends a notification to activate it for relay transmission; for a candidate terminal device that does not meet the relay condition, the third device sends a notification to deactivate it for relay transmission.
  • the present invention also provides an embodiment of a data transmission device, which can execute the process of the foregoing method embodiment.
  • an embodiment of a data transmission device 1400 includes:
  • the receiving unit 1401 is configured to receive the first data from the second terminal device
  • the sending unit 1402 is configured to send the first data to the third device when the relay transmission to the third device meets the relay condition.
  • the device also includes:
  • the processing unit 1403 is configured to confirm whether the relay transmission to the third device meets the relay condition.
  • the receiving unit is further configured to receive target channel quality indicator information, where the target channel quality indicator information indicates the target channel quality; when the first parameter meets the target channel quality, the processing unit confirms to the third The device performs relay transmission to meet a relay condition, and the first parameter is used to indicate the channel quality of the second wireless data link between the data transmission apparatus and the third device.
  • the target channel quality includes a first value, and the first value is used to indicate target retransmission resource information; the first parameter includes a second value, and the second value is used to indicate the first value.
  • Retransmission resource information of the wireless data link; the first parameter meeting the target channel quality includes: the second value is less than or equal to the first value.
  • the target channel quality includes a first value and a third value, the first value is used to indicate target retransmission resource information, and the third value is used to indicate target transmission window resource information;
  • a parameter includes a second value and a fourth value, the second value is used to indicate the retransmission resource information of the second wireless data link, and the fourth value is used to indicate the second value of the wireless data link.
  • Transmission window resource information; the first parameter meeting the target channel quality includes: the second value is less than or equal to the first value, and the fourth value is greater than or equal to the third value.
  • the processing unit when receiving the first instruction information sent by the third device or the network device, the processing unit confirms that the relay transmission to the third device satisfies the relay condition; wherein, the first instruction information is used to indicate The relay transmission performed by the third device satisfies the relay condition.
  • the sending unit when the relay transmission to the third device does not meet the relay condition, the sending unit does not send the first data to the third device.
  • the processing unit when the first parameter does not meet the target channel quality, the processing unit confirms that the relay transmission to the third device does not meet the relay condition, and the first parameter is used to instruct the first terminal device to communicate with each other.
  • the target channel quality includes a first value, and the first value is used to indicate target retransmission resource information; the first parameter includes a second value, and the second value is used to indicate all The retransmission resource information of the second wireless data link; the failure of the first value to meet the target channel quality includes: the second value is greater than the first value.
  • the target channel quality includes a first value and a third value, the first value is used to indicate target retransmission resource information, and the third value is used to indicate target transmission window resource information;
  • the first parameter includes a second value and a fourth value, the second value is used to indicate the retransmission resource information of the second wireless data link, and the fourth value is used to indicate the second wireless data link Transmission window resource information of a path;
  • the first value that does not meet the target channel quality includes: the second value is greater than the first value, and the fourth value is greater than the third value.
  • the processing unit when the receiving unit receives the second indication information sent by the third device or the network device, the processing unit confirms that the relay transmission to the third device does not meet the relay condition; wherein, the first 2.
  • the indication information is used to indicate that the relay transmission to the third device does not meet the relay conditions; or
  • the processing unit confirms that the relay transmission to the third device does not meet the relay condition; wherein, the first instruction information is used to indicate The second wireless data link satisfies the forwarding condition.
  • the sending unit is configured to obtain time window parameters and retransmission resource information; and according to the time window parameters and retransmission resource information, send the first data to the third device.
  • a data transmission device in the foregoing embodiment may be a terminal device that functions as a relay, for example, a vehicle terminal.
  • another embodiment of a data transmission device 1500 includes:
  • the processing unit 1501 is configured to obtain a first parameter, where the first parameter is used to indicate the channel quality of the second wireless data link between the first terminal device and the third device;
  • the sending unit 1502 is configured to send first indication information to the first terminal device when the first parameter meets the target channel quality; wherein, the first indication information is used to instruct the first terminal device to send the first indication information to the first terminal device.
  • the relay transmission of the three devices meets the relay conditions.
  • the target channel quality includes a first value, and the first value is used to indicate target retransmission resource information; the first parameter includes a second value, and the second value is used to indicate all The retransmission resource information of the second wireless data link; the first parameter meeting the target channel quality includes: the second value is less than or equal to the first value.
  • the target channel quality includes a first value and a third value, the first value is used to indicate target retransmission resource information, and the third value is used to indicate target transmission window resource information;
  • the first parameter includes a second value and a fourth value, the second value is used to indicate the retransmission resource information of the second wireless data link, and the fourth value is used to indicate the second wireless data link Transmission window resource information of the path;
  • the first parameter meeting the target channel quality includes: the second value is less than or equal to the first value, and the fourth value is greater than or equal to the third value.
  • the sending unit is further configured to: when the first parameter does not meet the target channel quality, send second indication information to the first terminal device; wherein, the second indication information is used to indicate the The relay transmission by a terminal device to the third device does not satisfy the relay condition.
  • the target channel quality includes a first value, and the first value is used to indicate target retransmission resource information; the first parameter includes a second value, and the second value is used to indicate all The retransmission resource information of the second wireless data link; the failure of the first parameter to meet the target channel quality includes: the second value is greater than the first value.
  • the target channel quality includes a first value and a third value, the first value is used to indicate target retransmission resource information, and the third value is used to indicate target transmission window resource information;
  • the first parameter includes a second value and a fourth value, the second value is used to indicate the retransmission resource information of the second wireless data link, and the fourth value is used to indicate the second wireless data link Transmission window resource information of the channel;
  • the first parameter not meeting the target channel quality includes: the second value is greater than the first value, or the fourth value is less than the third value.
  • the above-mentioned data transmission device may be a terminal device or a network device, such as a vehicle terminal or a network device.
  • the receiving unit may be a receiver
  • the sending unit may be a transmitter
  • the processing unit may be a processor
  • the receiving unit and the sending unit may be transceivers.
  • FIG. 16 is a schematic structural diagram of a data transmission device provided by the present application.
  • the device 900 can be applied to the system shown in FIG. 2.
  • FIG. 16 shows only the main components.
  • the device 900 includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is used to control the antenna and the input and output devices to send and receive signals
  • the memory is used to store computer programs
  • the processor is used to call and run the computer programs from the memory.
  • the radio frequency circuit is mainly used to convert baseband signals and radio frequency signals and process radio frequency signals.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal out in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 16 only shows a memory and a processor. In the actual first terminal device, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of an apparatus 1000 provided by an embodiment of this application.
  • the device 1000 shown in FIG. 17 may be a data transmission device, or may be a chip or circuit capable of completing the function of the data transmission device, for example, the chip or circuit may be provided in the data transmission device.
  • the apparatus 1000 shown in FIG. 17 may include at least one processor 1001 and an interface circuit 1002.
  • the processor 1001 implements the steps involved in the method provided in the embodiment shown in FIG. 3.
  • the device 1000 may further include a memory 1003, and the memory 1003 may be used to store instructions.
  • the processor 1001 executes the instructions stored in the memory 1003 to enable the device 1000 to implement the steps in the method provided in the embodiment shown in FIG. 3 or FIG. 9.
  • the processor 1001, the interface circuit 1002, and the memory 1003 can communicate with each other through an internal connection path to transfer control and/or data signals.
  • the memory 1003 is used to store computer programs.
  • the processor 1001 can call and run the computer programs from the memory 1003 to control the interface circuit 1002 to receive or send signals, or the processor 1001 can call and run from the memory 1003 through the interface circuit 1002 A computer program to complete the steps executed by the first terminal device in the method provided in the embodiment shown in FIG. 3 or FIG. 9.
  • the memory 1003 may be integrated in the processor 1001, or may be provided separately from the processor 1001.
  • the interface circuit 1002 may include a receiver and a transmitter.
  • the receiver and the transmitter may be the same component or different components.
  • the component can be called a transceiver.
  • the interface circuit 1002 may include an input interface and an output interface, and the input interface and the output interface may be the same interface, or may be different interfaces respectively.
  • the device 10 may not include the memory 1003, and the processor 1001 may read instructions (programs or codes) in the memory external to the chip or circuit to implement the instructions shown in FIG. 3 or FIG. 9 The steps performed by the first terminal device in the method provided in the illustrated embodiment.
  • the device 1000 may include a resistor, a capacitor, or other corresponding functional components, and the processor 1001 or the interface circuit 1002 may be implemented by corresponding functional components.
  • the function of the interface circuit 1002 may be implemented by a transceiver circuit or a dedicated chip for transceiver.
  • the processor 1001 may be implemented by a dedicated processing chip, a processing circuit, a processor, or a general-purpose chip.
  • a general-purpose computer may be considered to implement the first terminal device or the second terminal device provided in the embodiment of the present application. That is, the program codes for realizing the functions of the processor 1001 and the interface circuit 1002 are stored in the memory 1003, and the processor 1001 implements the functions of the processor 1001 and the interface circuit 1002 by executing the program codes stored in the memory 1003.
  • each module or unit in the device 1000 listed above are only exemplary descriptions, and each functional unit in the device 1000 can be used to execute each function executed by the first terminal device in the embodiment shown in FIG. 3 or FIG. 9. Action or process. In order to avoid repetitive descriptions, detailed descriptions are omitted here.
  • the embodiment of the present application also provides a communication system. It includes the data transmission device mentioned in the above embodiment of the present application.
  • the embodiments of the present application also provide a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a computer, the computer can implement FIG. 3 or FIG. 9 provided by the foregoing method embodiment.
  • the process related to the first terminal device in the illustrated embodiment is not limited to a computer-readable storage medium.
  • the embodiments of the present application also provide a computer program product, the computer program product is used to store a computer program, when the computer program is executed by a computer, the computer can implement the method shown in FIG. 3 or FIG. 9 provided by the above method embodiment.
  • the process related to the first terminal device in the embodiment is not limited to the embodiment.
  • processors mentioned in the embodiments of this application may be a CPU, other general-purpose processors, digital signal processors (digital signal processors, DSP), application specific integrated circuits (ASICs), ready-made 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 memory mentioned in the embodiments 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 electrically available 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 RAM
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM, DR RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component
  • the memory storage module
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely 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 may be combined 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 function 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 the 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 are used 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 (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

Landscapes

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

Abstract

本申请涉及一种数据传输的方法和装置，应用于V2X、D2D等用户端和用户端直接通信的技术领域。本申请的数据传输方法包括：第一终端设备接收来自第二终端设备的第一数据；确认向第三设备进行中继传输满足中继条件时，所述第一终端设备向所述第三设备发送所述第一数据。本实施例提供的方法可以应用于车联网，例如V2X、LTE-V、V2V等，能够提升了电动汽车的自动驾驶或ADAS能力。

Description

一种数据传输方法、装置和系统 技术领域
本申请的涉及通信技术领域，尤其涉及一种数据传输方法、装置和系统。
背景技术
车联网(Vehicle-To-Everything，简称V2X)通信是指车辆与外界的任何事物的通信，包括车与车的通信(Vehicle to Vehicle，简称为V2V)、车与行人的通信(Vehicle to Pedestrian，简称为V2P)、车与基础设施的通信(Vehicle to Infrastructure，简称为V2I)、车与网络的通信(Vehicle to Network，简称为V2N)。其中，车辆用户和车辆用户、行人用户和路边单元之间的链路称为侧行链路(Sidelink，简称SL)，其空口(Air Interface)也称为PC-5空口。车辆用户和网络设备的链路成为下行链路(Downlink，DL)者上行链路(Uplink，UL)，其空口(Air Interface)也称为Uu空口。
针对以车辆为代表的高速设备，是未来对通信时延要求非常高的场景下应用的基础技术和关键技术，如智能汽车、自动驾驶、智能交通运输系统等场景。LTE V2X通信可以支持有网络覆盖和无网络覆盖的通信场景，其资源分配方式可以采取网络接入设备调度模式，如演进通用陆地无线接入网节点B(E-UTRAN NodeB，简称为eNB)调度模式，也可以采用用户自主选择资源的模式。基于V2X技术，车辆用户(Vehicle UE，简称为V-UE)能将自身的一些信息，例如位置、速度、意图(转弯、并线、倒车)等信息周期性以及一些非周期性的事件触发的信息向周围的V-UE发送，同样地V-UE也会实时接收周围用户的信息。完成车辆用户之间的直接通信。
在3GPP标准中Rel-13/14中定义了UE-to-UE和UE-to-network中继(relay)相关技术，UE(user equipment，用户设备)被确定需要中继传输时，源(source)UE通过侧行链路将数据转发给中继UE(relay UE)，relay UE再将该数据中继给目标(destination)UE或目标网络设备。由于relay UE是唯一确定的，当relay UE与目标UE或者目标网络设备之间的链路质量不佳时，可能导致重新选择中继UE并重新建立数据链路，从而对中继传输的可靠性和时延带来问题。
发明内容
本发明实施例提供一种数据传输方法，以提高用户设备中继传输的可靠性。
第一方面，提供了一种数据传输的方法，该方法可以由第一终端设备或者第一终端设备的芯片执行，包括：第一终端设备接收来自第二终端设备的第一数据；确认向第三设备进行中继传输满足中继条件时，所述第一终端设备向所述第三设备发送所述第一数据。
上述实施例中，作为中继的第一终端设备在与第三设备建立第二无线数据链路后，需要确认向所述第三设备进行中继传输满足中继条件时，才会向第三设备发送待中继的数据，则可以根据建立的数据链路的实际状态进行中继，从而提高中继传输的可靠性，以及提升系统资源利用率。
一种可能的设计中，所述确认向第三设备进行中继传输满足中继条件包括：
第一终端设备接收目标信道质量指示信息，所述目标信道质量指示信息指示目标信道质量；
在第一参数满足目标信道质量时，第一终端设备确认向第三设备进行中继传输满足中继条件，所述第一参数用于指示所述第一终端设备与所述第三设备之间的第二无线数据链路的信道质量。
该实施例中，由第一终端设备根据第三设备或网络设备的配置参数对是否满足中继条件做确认，可以提高中继传输的效率，在满足可靠性和时延的情况，降低不必要的中继传输次数，进而减少了不必要的中继资源的使用，提升了资源利用率，同时也降低了对其他用户的干扰。
一种可能的设计中，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；
所述第一参数满足目标信道质量包括：
所述第二数值小于或等于所述第一数值。
一种可能的设计中，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；
所述第一参数满足目标信道质量包括：
所述第二数值小于或等于所述第一数值，且所述第四数值大于或等于所述第三数值。
一种可能的设计中，所述确认向第三设备进行中继传输满足中继条件包括：
在第一终端设备接收第三设备或者网络设备发送的第一指示信息时，确认向第三设备进行中继传输满足中继条件；其中，所述第一指示信息用于指示向所述第三设备进行中继传输满足中继条件。
该实施例中，第三设备或网络设备对是否满足中继条件做确认，并指示第一终端设备是否进行中继传输，第三设备或网络设备可以动态或半静态的调整满足中继终端设备中继传输的条件，提高中继传输的效率，在满足可靠性和时延的情况，降低不必要的中继传输次数，进而减少了不必要的中继资源的使用，提升了资源利用率，同时也降低了对其他用户的干扰。
一种可能的设计中，该方法还包括：
当向第三设备进行中继传输不满足中继条件时，所述第一终端设备不向所述第三设备发送所述第一数据。
一种可能的设计中，在第一参数不满足目标信道质量时，第一终端设备确认向第三设备进行中继传输不满足中继条件，所述第一参数用于指示所述第一终端设备与所述第三设备之间的第二无线数据链路的信道质量。
一种可能的设计中，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；
所述第一数值不满足目标信道质量包括：
所述第二数值大于所述第一数值。
一种可能的设计中，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；
所述第一数值不满足目标信道质量包括：
所述第二数值大于所述第一数值，且所述第四数值大于所述第三数值。
一种可能的设计中，在第一终端设备接收第三设备或者网络设备发送的第二指示信息，则确认向所述第三设备进行中继传输不满足中继条件；其中，所述第二指示信息用于指示向所述第三设备进行中继传输不满足中继条件；或者
第一终端设备未收到第三设备或者网络设备发送的第一指示信息，则确认向所述第三设备进行中继传输不满足中继条件；其中，所述第一指示信息用于指示所述第二无线数据链路满足转发条件。
一种可能的设计中，所述第一终端设备通过所述第二无线数据链路向所述第三设备发送所述第一数据，包括：
所述第一终端设备获得时间窗参数和重传资源信息；
根据所述时间窗参数和重传资源信息，向所述第三设备发送所述第一数据。
第二方面，提供了一种数据传输的方法，该方法可以由第三设备或网络设备或者第三设备或网络设备的芯片执行，包括：获得第一参数，所述第一参数用于指示第一终端设备与第三设备之间的第二无线数据链路的信道质量；
在所述第一参数满足目标信道质量时，向第一终端设备发送第一指示信息；其中，所述第一指示信息用于指示所述第一终端设备向所述第三设备进行中继传输满足中继条件。
该实施例中，第三设备或网络设备对是否满足中继条件做确认，并指示第一终端设备是否进行中继传输，第三设备或网络设备可以动态或半静态的调整满足中继终端设备中继传输的条件，提高中继传输的效率，在满足可靠性和时延的情况，降低不必要的中继传输次数，进而减少了不必要的中继资源的使用，提升了资源利用率，同时也降低了对其他用户的干扰。
一种可能的设计中，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；
所述第一参数满足目标信道质量包括：
所述第二数值小于或等于所述第一数值。
一种可能的设计中，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；
所述第一参数满足目标信道质量包括：
所述第二数值小于或等于所述第一数值，且所述第四数值大于或等于所述第三数值。
一种可能的设计中，该方法还包括：
在所述第一参数不满足目标信道质量时，向第一终端设备发送第二指示信息；其中，所述第二指示信息用于指示第一终端设备向所述第三设备进行中继传输不满足中继条件。
一种可能的设计中，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；
所述第一参数不满足目标信道质量包括：
所述第二数值大于所述第一数值。
一种可能的设计中，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；
所述第一参数不满足目标信道质量包括：
所述第二数值大于所述第一数值，或所述第四数值小于所述第三数值。
第三方面，提供了一种数据传输装置，所述数据传输装置用于执行上述第一方面任一可能的实现方式中的方法。具体地，所述数据传输装置可以包括用于执行第一方面的任一可能的实现方式中的方法的模块，例如包括：接收单元，用于接收来自第二终端设备的第一数据；发送单元，用于在向第三设备进行中继传输满足中继条件时，向所述第三设备发送所述第一数据。
一种可能的设计中，该装置还包括：处理单元，用于确认向第三设备进行中继传输是否满足中继条件。
上述数据传输装置可以是起中继作用的终端设备。
所述第三方面的数据传输装置，可以参照上述第一方面的方法中阐述的实现方式，使用相同或者相似的技术手段，达到相同或者相似的技术效果，不再赘述。
第四方面，提供了一种数据传输装置，所述数据传输装置用于执行上述第二方面任一可能的实现方式中的方法。具体地，所述数据传输装置可以包括用于执行第二方面的任一可能的实现方式中的方法的模块，例如包括：处理单元，用于获得第一参数，所述第一参数用于指示第一终端设备与第三设备之间的第二无线数据链路的信道质量；发送单元，用于在所述第一参数满足目标信道质量时，向第一终端设备发送第一指示信息；其中，所述第一指示信息用于指示所述第一终端设备向所述第三设备进行中继传输满足中继条件。
一种可能的设计中，该发送单元还用于：在所述第一参数不满足目标信道质量时，向第一终端设备发送第二指示信息；其中，所述第二指示信息用于指示第一终端设备向所述第三设备进行中继传输不满足中继条件。
上述数据传输装置可以是终端设备或者网路设备。
所述第四方面的数据传输装置，可以参照上述第二方面的方法中阐述的实现方式，使用相同或者相似的技术手段，达到相同或者相似的技术效果，不再赘述。
第五方面，提供一种通信装置，包括：至少一个处理器，所述至少一个处理器与至少一个存储器耦合：所述至少一个处理器，用于执行所述至少一个存储器中存储的计算机程序或指令，以使得所述装置执行如第一方面或第一方面的任一种可能的设计或第二方面或第二方面的任一种可能的设计所述的方法。
第六方面，本申请实施例还提供一种计算机可读存储介质，该计算机存储介质上存储有计算机程序，当改计算机程序在计算机上运行时，使得该计算机执行如第一方面或第一方面的任一种可能的设计或第二方面或第二方面的任一种可能的设计所述的方法。
第七方面，本申请实施例还提供一种计算机程序产品，该计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得该计算机执行如第一方面或第一方面的任一种可能的设计或第二方面或第二方面的任一种可能的设计所述的方法。
第八方面，本申请实施例提供一种芯片，该芯片包括处理器和通信接口，所述处理器用于从该通信接口调用并运行指令，当该处理器执行所述指令时，使得该芯片执行如第一方面或第一方面的任一种可能的设计或第二方面或第二方面的任一种可能的设计所述的方法。
第九方面，本申请实施例提供一种系统，所述系统包括至少一个如第三方面或第三方面的任一种可能的设计所述的装置、第四方面或第四方面的任一种可能的设计所述的装置或第八方面所述的芯片。
附图说明
图1为本发明实施例提供的V2X场景示意图；
图2为本申请实施例提供的一种可能的通信系统的架构示意图；
图3为本申请实施例提供的一种数据传输的方法流程图；
图4为本申请实施例提供的一种时间窗的示意图；
图5为本申请实施例提供的一种侧行传输资源的示意图；
图6为本申请实施例提供的一种确认是否满足中继条件的方法流程图；
图7为本申请实施例提供的另一种确认是否满足中继条件的方法流程图；
图8为本申请实施例提供的另一种数据传输的方法流程图；
图9为本申请实施例提供的一种传输数据的示意图；
图10为本申请实施例提供的另一种传输数据的示意图；
图11为本申请实施例提供的一种传输数据的示意图；
图12为本申请实施例提供的一种传输数据的示意图；
图13为本申请实施例提供的一种传输数据的示意图；
图14是本申请实施例提供的一种传输设备的结构示意图；
图15是本申请实施例提供的另一种传输设备的结构示意图
图16是本申请实施例提供的一种装置900的结构示意图；
图17是本申请实施例提供的一种装置1000的结构示意图。
具体实施方式
为了使本申请实施例的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施例作进一步地详细描述。
以下，对本申请实施例中的部分用语进行解释说明，以便于本领域技术人员理解。
1)终端设备，包括向用户提供语音和/或数据连通性的设备，具体的，包括向用户提供语音的设备，或包括向用户提供数据连通性的设备，或包括向用户提供语音和数据连通性的设备。例如可以包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该终端设备可以经无线接入网(radio access network，RAN)与核心网进行通信，与RAN交换语音或数据，或与RAN交互语音和数据。该终端设备可以包括用户设备(user equipment，UE)、无线终端设备、移动终端设备、D2D终端设备、V2X终端设备、机器到机器/机器类通信(machine-to-machine/machine-type communications，M2M/MTC)终端设备、物联网(internet of things，IoT)终端设备、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、远程站(remote station)、接入点(access point，AP)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、或用户装备(user device)等。例如，可以包括移动电话(或称为“蜂窝”电话)，具有移动终端设备的计算机，便携式、袖珍式、手持式、计算机内置的移动装置等。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、等设备。还包括受限设备，例如功耗较低的设备，或存储能力有限的设备，或计算能力有限的设备等。例如包括条码、射频识别(radio frequency identification，RFID)、传感器、全球定位系统(global positioning system，GPS)、激光扫描器等信息传感设备。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备或智能穿戴式设备等，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能头盔、智能首饰等。
而如上介绍的各种终端设备，如果位于车辆上(例如放置在车辆内或安装在车辆内)，都可以认为是车载终端设备，车载终端设备例如也称为车载单元(on-board unit，OBU)。
本申请实施例中，终端设备还可以包括中继终端设备(relay UE)。或者理解为，能够与基站进行数据通信的都可以看作终端设备。
本申请实施例中，用于实现终端设备的功能的装置可以是终端设备，也可以是能够支持终端设备实现该功能的装置，例如芯片系统，该装置可以被安装在终端设备中。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。本申请实施例提 供的技术方案中，以用于实现终端的功能的装置是终端设备为例，描述本申请实施例提供的技术方案。
2)网络设备，例如包括接入网(access network，AN)设备，例如基站(例如，接入点)，可以是指接入网中在空口通过一个或多个小区与无线终端设备通信的设备，或者例如，V2X技术中的网络设备为路侧单元(road side unit，RSU)。基站可用于将收到的空中帧与IP分组进行相互转换，作为终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括IP网络。RSU可以是支持V2X应用的固定基础设施实体，可以与支持V2X应用的其他实体交换消息。网络设备还可协调对空口的属性管理。例如，网络设备可以包括长期演进(long term evolution，LTE)系统或高级长期演进(long term evolution-advanced，LTE-A)中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，或者也可以包括第五代移动通信技术(the 5th generation，5G)新空口(new radio，NR)系统(也简称为NR系统)中的下一代节点B(next generation node B，gNB)或者也可以包括云接入网(cloud radio access network，Cloud RAN)系统中的集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)，本申请实施例并不限定。
网络设备还可以包括核心网设备，核心网设备例如包括访问和移动管理功能(access and mobility management function，AMF)等。本申请实施例由于不涉及核心网，因此在后文中如无特殊说明，则所述的网络设备均是指接入网设备。
本申请实施例中，用于实现网络设备的功能的装置可以是网络设备，也可以是能够支持网络设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备中。在本申请实施例提供的技术方案中，以用于实现网络设备的功能的装置是网络设备为例，描述本申请实施例提供的技术方案。
3)车辆通信(V2X通信)，指车辆与外界设备的通信。V2X通信可以支持有网络覆盖和无网络覆盖的通信场景，其资源分配方式可以采取网络接入设备调度模式，如演进通用陆地无线接入网节点B(E-UTRAN NodeB，简称为eNB)调度模式，也可以采用用户自主选择资源的模式。基于V2X技术，车辆用户(Vehicle UE，简称为V-UE)能将自身的一些信息，例如位置、速度、意图(转弯、并线、倒车)等信息周期性以及一些非周期性的事件触发的信息向周围的V-UE发送，同样地V-UE也会实时接收周围用户的信息。完成车辆用户之间的直接通信。可以理解的，车辆通信属于终端设备与终端设备通信，终端设备与终端设备通信是指终端设备之间进行直接通信，而不需要通过网络设备进行数据的中转(transfer)。车辆通信的技术可以用于终端与终端设备通信，反之，终端与终端设备通信可以用于车辆通信。在本文不特殊强调的情况下，车辆通信和终端设备与终端设备通信可以相互替换。
V2X具体又包括车与车(vehicle-to-vehicle，V2V)、车与路侧基础设施(vehicle-to-infrastructure，V2I)、车与行人(vehicle-to-pedestrian，V2P)的直接通信，以及车与网络(vehicle-to-network，V2N)的通信交互等几种应用需求。如图1所示。V2V指的是车辆间的通信；V2P指的是车辆与人(包括行人、骑自行车的人、司机、或乘客)的通信；V2I指的是车辆与网络设备的通信，网络设备例如RSU，另外还有一种V2N可以 包括在V2I中，V2N指的是车辆与基站/网络的通信。
其中，V2P可以用做给道路上行人或非机动车安全警告。通过V2I，车辆可以与道路甚至其他基础设施，例如交通灯、路障等，进行通信，获取交通灯信号时序等道路管理信息。V2V可以用做车辆间信息交互和提醒，最典型的应用是用于车辆间防碰撞安全系统。V2N是目前应用最为广泛的车联网形式，其主要功能是使车辆通过移动网络，连接到云服务器，使用云服务器提供的导航、娱乐、或防盗等应用功能。
在V2X中，主要是终端设备和终端设备之间的通信。对于终端设备和终端设备之间的传输模式，当前标准协议支持的有广播方式，组播方式，和单播方式。
广播方式：广播方式是指作为发送端的终端设备采用广播的模式进行数据发送，多个终端设备端均能接收来自发送端的侧行链路控制信息(sidelink control information，SCI)和/或侧行链路共享信道(sidelink shared channel，SSCH)。应理解，广播传输中，发送端的终端设备无法获知哪些终端设备会接收所发送的广播数据。
在侧行链路中，保证所有的终端设备都解析来自发送端的控制信息的方式是，发送端不对控制信息的CRC进行加扰，或者发送端使用所有的终端设备都已知的序列或标识对控制信息的CRC加扰。
组播方式：组播方式和广播发送相似，作为发送端的终端设备采用广播的模式进行数据发送，一组终端设备均能解析SCI和/或SSCH。一种情况下，组播的发送端和接收端是相互已知的，并且可以获得相应的组标识。另一情况，组播的发送端无法获知哪些终端设备会接收所发送的组播数据，但可以根据一些信息来限定一些终端设备来接收所发送的组播数据，例如，在距离发送端一定距离范围内的终端设备可以接收所发送的组播数据。
单播方式：单播方式是一个终端设备向另外一个终端设备发送数据，其它终端设备不需要或者不能够解析该数据。
4)侧行链路(sidelink)，是指终端装置和终端装置之间的链路。上行链路是指终端装置向网络装置发送信息的链路，下行链路是指终端装置接收来自网络装置信息的链路。
5)资源池，车辆设备(车辆设备也属于用户设备)之间的链路称之为侧行链路，车辆通信也可以称为侧行通信。侧行通信的所在的时频资源被称为资源池，即频域包括若干个子信道，每个子信道包括若干个物理资源块。时域上包括若干个时隙(slot)、子帧(subframe)、微时隙(mini-slot)中的至少一种时间单元。发送端UE和接收端UE在资源池内进行侧行通信，故此发送端UE的发送资源池和接收端UE的接收资源池的配置信息相同，所述配置信息包括但不限于，物理资源的配置信息包括子信道的个数，子信道的大小，时域slot配置信息，重传资源信息(包括解调参考信号配置信息、调制和编码方案配置信息)，物理侧行控制信息配置信息(例如物理侧行控制信息的时域长度信息、物理侧行控制信息的频域长度信息)，物理侧行反馈信道资源配置信息(例如物理侧行反馈信道存在的周期，物理侧行共享信道-物理侧行反馈信道的反馈时长)、功率控制相关信息等用于通信的基本配置信息。
6)本申请实施例中的术语“系统”和“网络”可被互换使用。“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B 的情况，其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。
以及，除非有相反的说明，本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分，不用于限定多个对象的大小、内容、顺序、时序、优先级或者重要程度等。例如，第一网络设备和第二网络设备，只是为了区分不同的网络设备，而并不是表示这两个信息的优先级或者重要程度等的不同。
本申请实施例可以应用于各种通信系统，例如：V2X，D2D(device)，车联网，网联车，智能网联车，智能驾驶，辅助驾驶以及设备到设备通信等直连通信领域。
本发明的实施例可以应用在V2X、D2D等用户端和用户端直接通信的系统中，适用于有网络覆盖和无网络覆盖的通信场景。参考图2，一个无线网络系统包括：第一终端设备11，至少两个第二终端设备12和第三设备13。其中，第一终端设备11分别与至少两个第二终端设备12建立有无线数据链路，所述至少两个第二终端设备12分别与第三设备13建立有无线数据链路。第一终端设备为源终端设备，第二终端设备为中继终端设备，第三设备为目标设备。至少一个第二终端设备用于向第三设备中继来自第一网络设备的数据。该无线网络系统的资源分配方式可以采取网络接入设备(例如gNB)调度模式，也可以采用用户自主选择资源的模式。第三设备可以是终端设备，也可以是网络设备。
该场景下，当第一终端设备需要通过中继终端设备向第三设备中继数据时，第一终端设备与至少两个第二终端设备存在第一无线数据链路，每个第二终端设备分别与第三设备存在第二无线数据链路。第一终端设备将待中继数据发送给至少两个第二终端设备。第二终端设备收到待中继数据时，确认预定条件时将待中继数据发送给第三设备。一种实现方式中，第二终端设备收到向第三设备中继数据的指示信息时，向第三设备发送待中继数据。另一种实现方式中，第二终端设备接收目标信道质量的指示信息，在所述第二无线数据链路的信道质量符合目标信道质量时，向第三设备发送待中继数据。
现有技术中，终端设备选择一个relay终端设备后，relay终端设备收到待中继数据就会向第三设备发送待中继数据。相比现有方案，本发明实施例中，一个第一终端设备会确定至少两个提供relay功能的第二终端设备，并分别建立数据链路。第二终端设备根据与第三设备之间的数据链路的信道质量确定是否发送待中继数据，则可以灵活地动态或半静态地选择信道质量好的至少一条数据链路做数据中继，从而提高数据传输的可靠性。减少重新建立和选择relay终端设备带来的可靠性和时延问题，提高资源利用率。
一个场景中，该第一终端设备、第二终端设备、目标终端设备可以是车辆终端，例如，车载通信模块或其它嵌入式通信模块。车辆终端之间通过侧行链路实现侧行通信。
本实施例中，中继指第一设备向第二设备发送来自第三设备的数据，其与转发，发送含义相同。
参考图3，本发明提供的一种数据传输方法的一个实施例，包括：
S201：第一终端设备接收来自第二终端设备的第一数据；
其中，第一数据为需要第一终端设备中继的数据，第二终端设备为源终端设备，第一终端设备为第二终端设备的中继设备。第一终端设备可以通过与第二终端设备之间建立的第一无线数据链路接收该第一数据。
S202：确认向第三设备进行中继传输满足中继条件时，所述第一终端设备向所述第三设备发送所述第一数据。
在中继第一数据之前，第一终端设备已经分别与所述第二终端设备和第三设备建立有无线数据链路。所述第一终端设备与所述第三设备之间建立有第二无线数据链路接。所述第一终端设备通过所述第二无线数据链路向所述第三设备发送所述第一数据。
确认满足中继条件有多种实现方式。一个实施例中，第一终端设备接收目标信道质量指示信息，所述目标信道质量指示信息指示目标信道质量；在第一参数满足目标信道质量时，第一终端设备确认向第三设备进行中继传输满足中继条件，所述第一参数用于指示所述第一终端设备与所述第三设备之间的第二无线数据链路的信道质量。另一个实施例中，第一终端设备接收第三设备或者网络设备发送的第一指示信息，则确认第一终端设备与第三设备之间的第二无线数据链路满足中继条件。其中第一指示信息用于指示向所述第三设备进行中继传输满足中继条件。可以理解的是，这两种实现方式可以替换步骤202。
S203：所述第三设备通过所述第二无线数据链路接收所述第一数据。
其中，所述第三设备可以是网络设备或者是第三终端设备。即，第一终端设备可以作为第二终端设备的中继向网络设备或者是第三终端设备发送待中继的第一数据。
上述实施例中，作为中继的第一终端设备在与第三设备建立第二无线数据链路后，需要确认向所述第三设备进行中继传输满足中继条件时，才会向第三设备发送待中继的数据，则可以根据建立的数据链路的实际状态进行中继，从而提高中继传输的可靠性，以及提升系统资源利用率。
应用于车联网领域，步骤S203的一个实施例中，所述第一终端设备通过所述第二无线数据链路向所述第三设备发送所述第一数据，包括：所述第一终端设备获得时间窗参数和重传资源信息；根据所述时间窗参数和重传资源信息，通过所述第二无线数据链路向所述第三设备发送所述第一数据。
其中，所述时间窗参数指示第一终端设备在所述第二无线数据链路上发送数据的时间单元。所述重传资源信息指示所述时间单元内发送的数据中重传数据的数量，所述重传数据指所述时间单元传输的数据中与前一个时间单元传输的数据相同的数据。时间单元可以是时隙、微时隙或者子帧或其他时间单元。
传输窗资源信息可以为时间窗参数W，重传资源信息可以为重传参数P和/或传输参数K。时间窗参数W用于指示第一终端设备进行侧行信息传输时的资源大小。
第一终端设备进行传输侧行信息的资源在时域上，可以包括一个或多个时间单元，时间单元可以为一个符号(symbol)、若干个符号、一个时隙、一个子帧等，所述一个或多个时间单元可以是在物理时间上连续的，也可以是离散的；在频域上，包括一个或多个频域单元，频域单元可以是一个子信道(sub channel)，一个RB或若干个RB。所述一个子信 道由一个或多个资源块(resource block，RB)组成。以时间单元为时隙为例，第一终端设备进行传输侧行信息的资源可以为在时隙n之后的W个时隙，该W个时隙用于传输W个传输块(Transport Block，TB)，即一个slot上面传输1个TB。或者第一终端设备进行传输侧行信息的资源可以为在时隙n之后的1个时隙上传输W个编码块(code block，CB)。其中1个TB可以由一个或多个CB组成。下面以W个时隙来传输W个TB为例来描述本方案，实际应用中还可以包括其他传输方案，这里不做限定。以频域单元为子信道为例，在W个时隙上进行传输的每个TB对应的子信道的位置(起始子信道和/或子信道个数)可以相同或不同。下面以W个时隙中的每个时隙用于传输TB对应的子信道位置相同来描述本方案，实际应用中还可以包括其他传输方案，这里不做限定。
具体的，所述时间窗参数W可以为在第n个时间单元上确定的标识为m的时间窗，所述m和n为大于等于1的整数。这里关于频域资源的描述不再赘述。
所述时间窗参数W还用于指示所述时间窗W内包含W个时间单元用于传输W个TB的侧行信息。具体如图4所示。该时间窗参数W可以指示该时间窗内包含5个时间单元，每个时间单元可以传输一个TB，也就是说该时间窗参数W可以为5
例如图5所示，第一终端设备进行传输侧行信息的资源包括时间窗参数为W1的第一时间窗和时间窗参数为W2的第二时间窗。在第二时间窗内，K和P的关系为K+P＝W。第一时间窗为第二时间窗的前一个时间窗，其中传输参数K表示第二时间窗与前一个时间窗相比，第二时间窗内的K个TB的侧行信息是初传的。重传参数P表示第二时间窗与前一个时间窗内的P个TB的侧行信息是相同的，即，第二时间窗中的第一数据与第一时间窗中的第一数据相同，也可以理解为第二时间窗中的P个TB是重传的。重传的TB可以使用不同的冗余版本(RV，Redundancy Version)，接收端可以对两个时间窗内收到的P个TB的侧行信息进行合并处理，提高译码成功率，从而提升侧行数据传输的可靠性。由于W及P/K的确定依据信道的实际状态，不同时刻确定的W及K/P可能不同，因此降低了固定次数盲重传(blind retransmission)所带来的不必要的重传所导致的资源利用率低下以及系统干扰的问题，同时数据的重传不依赖物理应答信息，避免了对承载应答信息所需要的时频资源的消耗，也降低了业务传输的时延。重传资源信息可以用重传参数P和/或传输参数K来指示，其中，重传资源信息利用传输参数K进行隐性指示。可选地，重传资源信息中的参数可能是参数P或者参数K，P和K可以分别由M-K和M-P计算得来。
下面以传输参数K为例进行说明。传输参数K为在时间窗中传输的W个TB的侧行信息中，初传的TB个数，当时间窗参数W为固定值的情况下，信道条件越好，需要的重传TB个数的就越少，相应的新传TB的数量可以增加，即传输参数K可以取较大的数值；当信道条件较差时，需要重传的TB的数量较多，相应初传的TB个数减少，即传输参数K需要取较小的数值，因此也可以把传输参数叫做新鲜因子(Freshness Factor)，W和K是整数，W≥1，0≤K≤M。K取值越小，表明P取值越大，重传的数据也越多，所以业务可靠性越高，但是在传输数据量一定的情况下，占用的资源量也就越大，资源利用率较低。相反的，K取值越大，表明P取值越小，重传的数据也越少，所以业务可靠性相对较低，但是在传输数据量一定的情况下，占用的资源量也就越小，资源利用率较高。
由于时间窗参数和重传资源信息的确定依据信道的实际状态，不同时刻确定的时间 窗参数和重传资源信息可不同，因此降低了固定次数盲重传(blind retransmission)所带来的不必要的重传所导致的资源利用率低下以及系统干扰的问题，同时数据的重传不依赖物理应答信息，避免了对承载应答信息所需要的时频资源的消耗，也降低了业务传输的时延。
一种可能的设计中，该实施例还包括：
S204：确认向第三设备进行中继传输不满足中继条件时，所述第一终端设备不向所述第三设备发送所述第一数据。
与步骤S202类似，确认不满足中继条件有多种实现方式。一个实施例中，第一终端设备接收目标信道质量指示信息，所述目标信道质量指示信息指示目标信道质量；在第一参数不满足目标信道质量时，第一终端设备确认向第三设备进行中继传输不满足中继条件，所述第一参数用于指示所述第一终端设备与所述第三设备之间的第二无线数据链路的信道质量。另一个实施例中，第一终端设备接收第三设备或者网络设备发送的第二指示信息，则确认第一终端设备与第三设备之间的第二无线数据链路不满足中继条件。其中第二指示信息用于指示向所述第三设备进行中继传输不满足中继条件。可以理解的是，这两种实现方式可以替换步骤204。
本实施例中，对于不满足中继条件的中继终端设备，不进行数据中继，目标用户或网络设备可以动态或半静态的调整满足中继终端设备中继传输的条件，提高中继传输的效率，在满足可靠性和时延的情况，降低不必要的中继传输次数，进而减少了不必要的中继资源的使用，提升了资源利用率，同时也降低了对其他用户的干扰。
一种可能的设计中，在步骤S202之前，该实施例还可以包括：
第一终端设备向所述第三设备发送待中继数据的初始传输，即待中继数据进行一次中继传输。通过这种方式，在对中继条件判断之前，先进行一次中继传输，可以避免多个第一终端设备之间因为不了解存在几个作为中继的终端设备而导致的没有第一终端设备执行中继传输的可能。
以下对确认向第三设备进行中继传输是否满足中继条件(即步骤S202和S204)的实现方式做进一步的描述。
实现方式一：第一终端设备根据目标信道质量指示信息确认向第三设备进行中继传输不满足中继条件。参考图6，该方法可以包括以下步骤：
S601：第三设备向第一终端设备发送第一参数，所述第一参数用于指示所述第一终端设备与所述第三设备之间的第二无线数据链路的信道质量；
一种可能的设计中，第一参数可以通过侧行控制信息、RRC信令和MAC CE中的至少一种消息携带。
S602：第一终端设备接收第一参数，获得所述第二无线数据链路的信道质量；
S603：第一终端设备接收网络设备或第三设备发送的目标信道质量指示信息，所述目标信道质量指示信息指示目标信道质量；
第一终端设备根据所述目标信道质量指示信息，获得目标信道质量。
一种可能的设计中，目标信道质量指示信息可以通过下行控制信息、侧行控制信息、RRC信令和MAC CE中的至少一种消息携带。
S604：第一终端设备确认所述第一参数是否满足目标信道质量。
在第一参数满足目标信道质量时，第一终端设备确认向第三设备进行中继传输满足中继条件；在第一参数不满足目标信道质量时，第一终端设备确认向第三设备进行中继传输满足中继条件。
一个实施例中，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；所述第一参数满足目标信道质量包括：所述第二数值小于或等于所述第一数值。一种情况下，第一终端设备仅获得目标重传资源信息，根据目标重传资源信息做中继条件的判断。另一种情况下，第一终端设备获得目标重传资源信息和其他信息(例如传输窗资源信息)，但仍然仅根据目标重传资源信息做中继条件的判断。
另一个实施例中，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；所述第一参数满足目标信道质量包括：所述第二数值小于或等于所述第一数值，且所述第四数值大于或等于所述第三数值。该实施例中，根据目标重传资源信息和目标传输窗资源信息做中继条件的判断。
该实施例中，由第一终端设备根据第三设备或网络设备的配置参数对是否满足中继条件做确认，可以提高中继传输的效率，在满足可靠性和时延的情况，降低不必要的中继传输次数，进而减少了不必要的中继资源的使用，提升了资源利用率，同时也降低了对其他用户的干扰。
实现方式二：第三设备或者网络设备根据目标信道质量确认向第三设备进行中继传输是否满足中继条件，并向第一终端设备发送是否满足中继条件的指示信息。参考图7，该方法可以包括以下步骤：
S701:第三设备或者网络设备获得第一参数，所述第一参数用于指示所述第一终端设备与所述第三设备之间的第二无线数据链路的信道质量；
根据第一参数，第三设备或者网络设备获得所述第二无线数据链路的信道质量；
如果该步骤由第三设备执行，则第三设备获得该第一参数。如果该步骤由网络设备执行，则所述网络设备接收第三设备发送的第一参数。
S702：第三设备或者网络设备获得目标信道质量；
S703：第三设备或者网络设备确认所述第一参数是否满足目标信道质量。
在所述第一参数满足目标信道质量时，第三设备或者网络设备确认向第三设备进行中继传输满足中继条件，并向第一终端设备发送第一指示信息；在所述第一参数不满足目标信道质量时，第三设备或者网络设备确认向第三设备进行中继传输不满足中继条件，并向第一终端设备发送第二指示信息。第一指示信息用于指示向第三设备进行中继传输满足中继条件；第二指示信息用于指示向第三设备进行中继传输不满足中继条件。
S704：第一终端设备接收到第一指示信息，则确认向第三设备进行中继传输满足中继条件；或者第一终端设备未接收到第一指示信息或者接收到第二指示信息，则确认向第三设备进行中继传输满足中继条件。
一种实现方式中，第一指示信息为激活中继传输通知信息，第二指示信息为去激活中继传输通知信息。
该实施例中，第三设备或网络设备对是否满足中继条件做确认，并指示第一终端设备是否进行中继传输，第三设备或网络设备可以动态或半静态的调整满足中继终端设备中继传输的条件，提高中继传输的效率，在满足可靠性和时延的情况，降低不必要的中继传输次数，进而减少了不必要的中继资源的使用，提升了资源利用率，同时也降低了对其他用户的干扰。
以下以车联网运行环境为例，描述本发明的实施例。
数据传输系统的一个实施例，包括：
第一车辆终端，为源终端设备，用于向第三设备发送第一数据；
多个第二车辆终端，为中继终端设备，用于接收第一车辆终端的第一数据；
第三设备，用于接收满足条件的至少一个车辆终端发送的第一数据。
其中，所述第一车辆终端与多个第二车辆终端中的每一个车辆终端存在第一数据链路；所述多个第二车辆终端中的每一个车辆终端与第三设备存在第二数据链路。第三设备可以是第三车辆终端或者网络设备。
例如，源终端设备需要通过中继终端设备向第三设备发送数据，确定了Relay UE1、Relay UE2和Relay UE3作为中继传输的候选中继终端设备。
在网络覆盖范围下，网络设备通过系统消息块(System Information Block，简称SIB)、小区级(cell-specific)的无线资源控制(Radio Resource Control，简称RRC)信令或者终端用户级(UE-specific)RRC信令配置本小区内UE的侧行链路(Sidelink，简称SL)资源池(Resource Pool)信息。在非网络覆盖范围下，用户端(UE)使用设备出厂预配置的资源池(Resource Pool)信息。资源池(Resource Pool)信息用于指示资源池。用户端(UE)在资源池内和其他UE进行侧行通信，包括单播、组播和广播通信。定义一个时频资源样式(Time Frequency Resource Pattern，简称TFPR)，在时域上，包括一个或多个时间单元，时间单元可以为一个符号(symbol)、若干个符号、一个时隙、一个子帧等，所述一个或多个时间单元可以是在物理时间上连续的，也可以是离散的；在频域上，包括一个或多个频域单元，频域单元可以是一个子信道(sub channel)(所述一个子信道由一个或多个资源块(resource block，简称RB)组成)、一个RB或若干个RB。
参考图8，对应于上述网络系统，一个数据传输方法的实施例，包括：
S801：源终端设备向多个候选中继终端设备发送待中继的侧行数据。
源终端设备可以广播、组播或者单播的形式向所有候选中继终端设备，即Relay UE1、Relay UE2和Relay UE3发送待中继的侧行数据。
源终端设备如果是以广播或组播形式发送的，源终端设备确定一个时间窗参数W和/或传输参数K值；源终端设备如果是以单播形式向每个候选中继终端设备单独发送的，则每个单播传输都有单独的时间窗参数W和/或传输参数K值。参考图9，源终端设备从资源池的配置信息中获得时间窗参数W，以广播或组播形式发送待中继的侧行数据给候选中继设备。
本实施例中的时间窗参数和传输参数的定义可以参考上文描述，在此不赘述。
S802：多个候选中继终端设备分别向第三设备发送待中继的侧行数据的初始传输。
该步骤中的初始传输指，中继终端设备分别向第三设备发送一次待中继的侧行数据，候选中继终端设备再执行确认是否满足中继条件和后续的中继传输的步骤。
候选中继终端设备可以通过单播、组播、广播的任一种方式进行中继传输。如果是以广播或组播形式发送的，中继终端设备确定一个唯一的时间窗参数W和/或传输参数K值；如果是以单播形式向第三设备单独发送的，则每个单播传输都有单独的时间窗参数W和/或传输参数K值。参考图10，中继终端设备从资源池的配置信息中获得时间窗参数W，以广播或组播形式发送待中继的侧行数据给候选中继设备。
步骤S802为可选步骤。另外一种情况，在初始传输时Relay UE1、Relay UE2和Relay UE3便不向第三设备传输从源终端设备接收的待中继的侧行数据，只是通过信道估计(包括信道侦听Channel sensing和参考信号测量Reference signal measurement)的方式，确定和目标无线设备传的时间窗参数W和/或传输参数K值。此处不用于限定初始传输时确定时间窗参数W和传输参数K的方式。
S803：多个候选中继终端设备分别确定向第三设备进行中继传输是否满足中继条件。
在向第三设备进行中继传输满足中继条件时，候选中继终端设备向第三设备发送从源终端设备接收的待中继的侧行数据；在不满足中继条件时，候选中继终端设备不向第三设备传输从源终端设备接收的待中继的侧行数据。
确认是否满足中继条件可以有多种方式。
一种实现方式中，由候选中继终端设备根据目标重传资源信息确认是否满足中继条件，该步骤包括：
S8031：多个候选中继终端设备获得目标重传资源信息；
一种实现方式中，第三设备分别向多个候选中继终端设备发送目标重传资源信息。
第三设备，根据QoS业务需求，例如时延需求，或者从资源利用率的角度，确定需要限制重传的个数；或者从可靠性需求，确定保证重传的个数。第三设备可以通过高层(PC5-RRC)向Relay UE1、Relay UE2和Relay UE3分别反馈目标时间窗参数W和/或目标传输参数K值。第三设备也可以在物理层信令里，例如SCI或SFCI中反馈目标时间窗参数W和/或目标传输参数K值。参考图11，第三设备以广播或组播形式发送时间窗参数W和/或目标传输参数K值给候选中继设备。
另一种实现方式中，第三设备向网络设备发送目标重传资源信息，网络设备再分别向多个候选中继终端设备发送目标重传资源信息。
在网络覆盖范围内，由网络设备，例如基站，eNB，gNB或者路边单元(RSU，Road Side Unit)进行调度或辅助资源管理。例如，第三设备向网络设备通过上行链路发送目标时间窗参数W和/或目标传输参数K值。例如，目标时间窗参数W和/或目标传输参数K值携带在RRC信令、MACCE或UCI中。再由网络设备通过下行链路通知候选中继终端设备目标时间窗参数W和/或目标传输参数K值，例如，目标时间窗参数W和/或目标传输参数K值携带在RRC信令、MACCE或DCI中等。
S8032：候选中继终端设备根据目标重传资源信息确定是否向第三设备传输从源终端设 备接收的待中继的侧行数据。
所述目标时间窗参数W和/或传输参数K值用于激活候选中继终端设备的至少一个UE可以使用相应的时间窗参数W和/或传输参数K值进行中继传输，去激活候选中继终端设备中不满足需求的UE不进行中继传输。参考图12，候选中继终端设备确认是否激活中继传输。例如，relay UE1不进行中继传输，relay UE2和relay UE3进行中继传输。
例如目标用于反馈的传输参数K值为2，有两种操作方式：1)对于relay UE而言，如果其与第三设备的重传资源信息传输参数K≤2的，则被第三设备激活用于进行中继传输，并按照实际的传输参数K值进行中继；2)对于relay UE而言，如果其与第三设备的重传资源信息传输参数K≤2的，则被第三设备激活用于进行中继传输，按照第三设备反馈的传输参数K值进行中继，即传输参数K＝2；
一种实现方式中，由候选中继终端设备根据目标重传资源信息确认是否满足中继条件，并向候选中继设备发送指示信息。该步骤包括：
另一实现方式中，由第三设备或者网络设备根据目标重传资源信息做判断，该步骤包括：
S8033：第三设备向网络设备通过上行链路汇报目标时间窗参数W和/或传输参数K值；
S8034：多个候选中继终端设备分别向网络设备通过上行链路汇各自与第三设备传输的时间窗参数W和/或传输参数K值；
S8035：网络设备通过比较目标时间窗参数W和/或传输参数K值和第三设备传输的时间窗参数W和/或传输参数K值，确认是否满足中继条件。
对于满足中继条件的候选终端设备，网络设备通过下行链路通知激活其进行中继传输；对于不满足中继条件的候选终端设备，网络设备通过下行链路通知去激活其进行中继传输。参考图13，网络设备向候选中继终端设备发送激活或者去激活中继传输的通知，例如，向relay UE1发送去激活中继传输的通知，向relay UE2和relay UE3发送激活中继传输的通知。
例如，激活通知或者去激活通知可以携带在RRC信令、MAC CE或DCI中。
另一实现方式中，由第三设备根据目标重传资源信息做判断，该步骤包括：
S8036：第三设备确定目标时间窗参数W和/或传输参数K值；
S8037：第三设备通过比较目标时间窗参数W和/或传输参数K值和第三设备传输的时间窗参数W和/或传输参数K值，确认是否满足中继条件。
对于满足中继条件的候选终端设备，第三设备发送激活其进行中继传输的通知；对于不满足中继条件的候选终端设备，第三设备发送去激活其进行中继传输的通知。
对应于上述方法实施例，本发明还提供的数据传输装置的实施例，其可以执行上述方法实施例的流程。
参考图14，一种数据传输装置1400的一个实施例，包括：
接收单元1401，用于接收来自第二终端设备的第一数据；
发送单元1402，用于在向第三设备进行中继传输满足中继条件时，向所述第三设备发送所述第一数据。
一种可能的设计中，该装置还包括：
处理单元1403，用于确认向第三设备进行中继传输是否满足中继条件。
一种实现方式中，所述接收单元还用于接收目标信道质量指示信息，所述目标信道质量指示信息指示目标信道质量；在第一参数满足目标信道质量时，所述处理单元确认向第三设备进行中继传输满足中继条件，所述第一参数用于指示所述数据传输装置与所述第三设备之间的第二无线数据链路的信道质量。
第一种方式，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；所述第一参数满足目标信道质量包括：所述第二数值小于或等于所述第一数值。
另一种方式，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；所述第一参数满足目标信道质量包括：所述第二数值小于或等于所述第一数值，且所述第四数值大于或等于所述第三数值。
一种实现方式中，在接收第三设备或者网络设备发送的第一指示信息时，处理单元确认向第三设备进行中继传输满足中继条件；其中，所述第一指示信息用于指示向所述第三设备进行中继传输满足中继条件。
一种可能的设计中，当向第三设备进行中继传输不满足中继条件时，所述发送单元不向所述第三设备发送所述第一数据。
一种实现方式中，在第一参数不满足目标信道质量时，处理单元确认向第三设备进行中继传输不满足中继条件，所述第一参数用于指示所述第一终端设备与所述第三设备之间的第二无线数据链路的信道质量。
一种可能的设计中，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；所述第一数值不满足目标信道质量包括：所述第二数值大于所述第一数值。
一种可能的设计中，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；所述第一数值不满足目标信道质量包括：所述第二数值大于所述第一数值，且所述第四数值大于所述第三数值。
另一种实现方式中，在接收单元接收第三设备或者网络设备发送的第二指示信息时，则处理单元确认向所述第三设备进行中继传输不满足中继条件；其中，所述第二指示信息用于指示向所述第三设备进行中继传输不满足中继条件；或者
在接收单元未收到第三设备或者网络设备发送的第一指示信息，则处理单元确认向所述第三设备进行中继传输不满足中继条件；其中，所述第一指示信息用于指示所述第二无 线数据链路满足转发条件。
一种可能的设计中，所述发送单元用于获得时间窗参数和重传资源信息；根据所述时间窗参数和重传资源信息，向所述第三设备发送所述第一数据。
上述实施例中的一种数据传输装置可以是起中继作用的终端设备，例如可以是车辆终端。
参考图15，一种数据传输装置1500的另一个实施例，包括：
处理单元1501，用于获得第一参数，所述第一参数用于指示第一终端设备与第三设备之间的第二无线数据链路的信道质量；
发送单元1502，用于在所述第一参数满足目标信道质量时，向第一终端设备发送第一指示信息；其中，所述第一指示信息用于指示所述第一终端设备向所述第三设备进行中继传输满足中继条件。
一种可能的设计中，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；所述第一参数满足目标信道质量包括：所述第二数值小于或等于所述第一数值。
一种可能的设计中，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；所述第一参数满足目标信道质量包括：所述第二数值小于或等于所述第一数值，且所述第四数值大于或等于所述第三数值。
一种可能的设计中，该发送单元还用于：在所述第一参数不满足目标信道质量时，向第一终端设备发送第二指示信息；其中，所述第二指示信息用于指示第一终端设备向所述第三设备进行中继传输不满足中继条件。
一种可能的设计中，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；所述第一参数不满足目标信道质量包括：所述第二数值大于所述第一数值。
一种可能的设计中，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；所述第一参数不满足目标信道质量包括：所述第二数值大于所述第一数值，或所述第四数值小于所述第三数值。
上述数据传输装置可以是终端设备或者网路设备，例如：车辆终端或者网络设备。
上述装置实施例中，接收单元在可以是接收器，发送单元可以是发送器，处理单元可以是处理器；或者接收单元和发送单元可以是收发器。
参见图16，图16是本申请提供的一种数据传输装置的结构示意图。该装置900可应用于图2所示出的系统中。为了便于说明，图16仅示出了主要部件。如图16所示，装置900包括处理器、存储器、射频电路、天线以及输入输出装置。处理器用于控制天线以及输入输出装置收发信号，存储器用于存储计算机程序，处理器用于从存储器中调用并运行该计算机程序，射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解，为了便于说明，图16仅示出了一个存储器和处理器。在实际的第一终端设备中，可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本申请实施例对此不做限制。
图17为本申请实施例提供的一种装置1000的结构示意图。图17所示的装置1000可以是数据传输装置，或者可以是能够完成数据传输装置的功能的芯片或电路，例如该芯片或电路可以设置在数据传输装置中。图17所示的装置1000可以包括至少一个处理器1001和接口电路1002。该处理器1001实现图3所示的实施例所提供的方法中所涉及的步骤。一种可能的设计中，装置1000还可以包括存储器1003，存储器1003可用于存储指令。处理器1001通过执行存储器1003所存储的指令，使得装置1000实现图3或图9所示的实施例所提供的方法中的步骤。
进一步的，处理器1001、接口电路1002和存储器1003之间可以通过内部连接通路互相通信，传递控制和/或数据信号。存储器1003用于存储计算机程序，处理器1001可以从存储器1003中调用并运行计算机程序，以控制接口电路1002接收信号或发送信号，或者所述处理器1001通过接口电路1002从存储器1003中调用并运行计算机程序，以完成图3或图9所示的实施例所提供的方法中第一终端设备执行的步骤。存储器1003可以集成在处理器1001中，也可以与处理器1001分开设置。
可选地，若装置1000为设备，接口电路1002可以包括接收器和发送器。其中，接收器和发送器可以为相同的部件，或者为不同的部件。接收器和发送器为相同的部件时，可以将该部件称为收发器。
可选地，若装置1000为芯片或电路，则接口电路1002可以包括输入接口和输出接口，输入接口和输出接口可以是相同的接口，或者可以分别是不同的接口。
可选地，若装置1000为芯片或电路，装置10也可以不包括存储器1003，处理器1001可以读取该芯片或电路外部的存储器中的指令(程序或代码)以实现图3或图9所示的实施例所提供的方法中第一终端设备执行的步骤。
可选地，若装置1000为芯片或电路，则装置1000可以包括电阻、电容或其他相应的功能部件，处理器1001或接口电路1002可以通过相应的功能部件实现。
作为一种实现方式，接口电路1002的功能可以考虑通过收发电路或收发的专用芯片实现。处理器1001可以考虑通过专用处理芯片、处理电路、处理器或通用芯片实现。
作为另一种实现方式，可以考虑使用通用计算机的方式来实现本申请实施例提供的第一终端设备或第二终端设备。即，将实现处理器1001、接口电路1002的功能的程序代码存储在存储器1003中，处理器1001通过执行存储器1003存储的程序代码来实现处理器1001、接口电路1002的功能。
其中，以上列举的装置1000中各模块或单元的功能和动作仅为示例性说明，装置1000中各功能单元可用于执行图3或图9所示的实施例中第一终端设备所执行的各动作或处理过程。这里为了避免赘述，省略其详细说明。
本申请实施例还提供一种通信系统。其包含本申请上述实施例提到的数据传输装置。
本申请实施例还提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，该计算机程序被计算机执行时，所述计算机可以实现上述方法实施例提供的图3或图9所示的实施例中与第一终端设备相关的流程。
本申请实施例还提供一种计算机程序产品，所述计算机程序产品用于存储计算机程序，该计算机程序被计算机执行时，所述计算机可以实现上述方法实施例提供的图3或图9所示的实施例中与第一终端设备相关的流程。
应理解，本申请实施例中提及的处理器可以是CPU，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)集成在处理器中。
应注意，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程 构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请实施例的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请实施例揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请实施例的保护范围之内。因此，本申请实施例的保护范围应所述以权利要求的保护范围为准。

Claims (38)

  1. 一种数据传输方法，其特征在于，包括：
    第一终端设备接收来自第二终端设备的第一数据；
    确认向第三设备进行中继传输满足中继条件时，所述第一终端设备向所述第三设备发送所述第一数据。
  2. 根据权利要求1所述的方法，其特征在于，所述确认向第三设备进行中继传输满足中继条件包括：
    第一终端设备接收目标信道质量指示信息，所述目标信道质量指示信息指示目标信道质量；
    在第一参数满足目标信道质量时，第一终端设备确认向第三设备进行中继传输满足中继条件，所述第一参数用于指示所述第一终端设备与所述第三设备之间的第二无线数据链路的信道质量。
  3. 根据权利要求2所述的方法，其特征在于，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；
    所述第一参数满足目标信道质量包括：
    所述第二数值小于或等于所述第一数值。
  4. 根据权利要求2所述的方法，其特征在于，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；
    所述第一参数满足目标信道质量包括：
    所述第二数值小于或等于所述第一数值，且所述第四数值大于或等于所述第三数值。
  5. 根据权利要求1所述的方法，其特征在于，所述确认向第三设备进行中继传输满足中继条件包括：
    在第一终端设备接收第三设备或者网络设备发送的第一指示信息时，确认向第三设备进行中继传输满足中继条件；其中，所述第一指示信息用于指示向所述第三设备进行中继传输满足中继条件。
  6. 根据权利要求1-5所述的方法，其特征在于，还包括：
    当向第三设备进行中继传输不满足中继条件时，所述第一终端设备不向所述第三设备发送所述第一数据。
  7. 根据权利要求6所述的方法，其特征在于，
    在第一参数不满足目标信道质量时，第一终端设备确认向第三设备进行中继传输不满足中继条件，所述第一参数用于指示所述第一终端设备与所述第三设备之间的第二无线数 据链路的信道质量。
  8. 根据权利要求7所述的方法，其特征在于，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；
    所述第一数值不满足目标信道质量包括：
    所述第二数值大于所述第一数值。
  9. 根据权利要求7所述的方法，其特征在于，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；
    所述第一数值不满足目标信道质量包括：
    所述第二数值大于所述第一数值，且所述第四数值大于所述第三数值。
  10. 根据权利要求6所述的方法，其特征在于，
    在第一终端设备接收第三设备或者网络设备发送的第二指示信息，则确认向所述第三设备进行中继传输不满足中继条件；其中，所述第二指示信息用于指示向所述第三设备进行中继传输不满足中继条件；或者
    第一终端设备未收到第三设备或者网络设备发送的第一指示信息，则确认向所述第三设备进行中继传输不满足中继条件；其中，所述第一指示信息用于指示所述第二无线数据链路满足转发条件。
  11. 根据权利要求1-10任一所述的方法，其特征在于，所述第一终端设备通过所述第二无线数据链路向所述第三设备发送所述第一数据，包括：
    所述第一终端设备获得时间窗参数和重传资源信息；
    根据所述时间窗参数和重传资源信息，向所述第三设备发送所述第一数据。
  12. 一种数据传输方法，其特征在于，包括：
    获得第一参数，所述第一参数用于指示第一终端设备与第三设备之间的第二无线数据链路的信道质量；
    在所述第一参数满足目标信道质量时，向第一终端设备发送第一指示信息；其中，所述第一指示信息用于指示所述第一终端设备向所述第三设备进行中继传输满足中继条件。
  13. 根据权利要求12所述的方法，其特征在于，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；
    所述第一参数满足目标信道质量包括：
    所述第二数值小于或等于所述第一数值。
  14. 根据权利要求12所述的方法，其特征在于，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数 据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；
    所述第一参数满足目标信道质量包括：
    所述第二数值小于或等于所述第一数值，且所述第四数值大于或等于所述第三数值。
  15. 根据权利要求12-14任一所述的方法，其特征在于，还包括：
    在所述第一参数不满足目标信道质量时，向第一终端设备发送第二指示信息；其中，所述第二指示信息用于指示第一终端设备向所述第三设备进行中继传输不满足中继条件。
  16. 根据权利要求15所述的方法，其特征在于，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；
    所述第一参数不满足目标信道质量包括：
    所述第二数值大于所述第一数值。
  17. 根据权利要求15所述的方法，其特征在于，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；
    所述第一参数不满足目标信道质量包括：
    所述第二数值大于所述第一数值，或所述第四数值小于所述第三数值。
  18. 一种数据传输装置，其特征在于，包括：
    接收单元，用于接收来自第二终端设备的第一数据；
    发送单元，用于在向第三设备进行中继传输满足中继条件时，向所述第三设备发送所述第一数据。
  19. 根据权利要求18所述的装置，其特征在于，还包括：
    处理单元，用于确认向第三设备进行中继传输满足中继条件；
    所述接收单元还用于接收目标信道质量指示信息，所述目标信道质量指示信息指示目标信道质量；
    在第一参数满足目标信道质量时，所述处理单元确认向第三设备进行中继传输满足中继条件，所述第一参数用于指示所述数据传输装置与所述第三设备之间的第二无线数据链路的信道质量。
  20. 根据权利要求19所述的方法，其特征在于，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；
    所述第一参数满足目标信道质量包括：
    所述第二数值小于或等于所述第一数值。
  21. 根据权利要求19所述的方法，其特征在于，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数 据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；
    所述第一参数满足目标信道质量包括：
    所述第二数值小于或等于所述第一数值，且所述第四数值大于或等于所述第三数值。
  22. 根据权利要求18所述的装置，其特征在于，还包括：
    处理单元，用于确认向第三设备进行中继传输满足中继条件；
    在接收第三设备或者网络设备发送的第一指示信息时，确认向第三设备进行中继传输满足中继条件；其中，所述第一指示信息用于指示向所述第三设备进行中继传输满足中继条件。
  23. 根据权利要求18-22任一所述的装置，其特征在于，
    当向第三设备进行中继传输不满足中继条件时，所述发送单元不向所述第三设备发送所述第一数据。
  24. 根据权利要求23所述的装置，其特征在于，在第一参数不满足目标信道质量时，确认向第三设备进行中继传输不满足中继条件，所述第一参数用于指示所述第一终端设备与所述第三设备之间的第二无线数据链路的信道质量。
  25. 根据权利要求24所述的装置，其特征在于，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；
    所述第一数值不满足目标信道质量包括：
    所述第二数值大于所述第一数值。
  26. 根据权利要求24所述的装置，其特征在于，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；
    所述第一数值不满足目标信道质量包括：
    所述第二数值大于所述第一数值，且所述第四数值大于所述第三数值。
  27. 根据权利要求23所述的装置，其特征在于，在接收单元接收第三设备或者网络设备发送的第二指示信息时，则确认向所述第三设备进行中继传输不满足中继条件；其中，所述第二指示信息用于指示向所述第三设备进行中继传输不满足中继条件；或者
    在接收单元未收到第三设备或者网络设备发送的第一指示信息，则确认向所述第三设备进行中继传输不满足中继条件；其中，所述第一指示信息用于指示所述第二无线数据链路满足转发条件。
  28. 根据权利要求18-27任一所述的装置，其特征在于，所述发送单元用于获得时间窗参数和重传资源信息；根据所述时间窗参数和重传资源信息，向所述第三设备发送所述第一数据。
  29. 一种数据传输装置，其特征在于，包括：
    处理单元，用于获得第一参数，所述第一参数用于指示第一终端设备与第三设备之间的第二无线数据链路的信道质量；
    发送单元，用于在所述第一参数满足目标信道质量时，向第一终端设备发送第一指示信息；其中，所述第一指示信息用于指示所述第一终端设备向所述第三设备进行中继传输满足中继条件。
  30. 根据权利要求29所述的装置，其特征在于，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；
    所述第一参数满足目标信道质量包括：
    所述第二数值小于或等于所述第一数值。
  31. 根据权利要求29所述的装置，其特征在于，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；
    所述第一参数满足目标信道质量包括：
    所述第二数值小于或等于所述第一数值，且所述第四数值大于或等于所述第三数值。
  32. 根据权利要求29-31任一所述的装置，其特征在于，还包括：
    在所述第一参数不满足目标信道质量时，向第一终端设备发送第二指示信息；其中，所述第二指示信息用于指示第一终端设备向所述第三设备进行中继传输不满足中继条件。
  33. 根据权利要求32所述的装置，其特征在于，所述目标信道质量包括第一数值，所述第一数值用于指示目标重传资源信息；所述第一参数包括第二数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息；
    所述第一参数不满足目标信道质量包括：
    所述第二数值大于所述第一数值。
  34. 根据权利要求32所述的方法，其特征在于，所述目标信道质量包括第一数值和第三数值，所述第一数值用于指示目标重传资源信息，所述第三数值用于指示目标传输窗资源信息；所述第一参数包括第二数值和第四数值，所述第二数值用于指示所述第二无线数据链路的重传资源信息，所述第四数值用于指示所述第二无线数据链路的传输窗资源信息；
    所述第一参数不满足目标信道质量包括：
    所述第二数值大于所述第一数值，或所述第四数值小于所述第三数值。
  35. 一种计算机存储介质，其特征在于，所述计算机存储介质上存储有计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1-16任一项所述的方法。
  36. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1-16任一项所述的方法。
  37. 一种芯片，其特征在于，所述芯片包括：
    处理器和通信接口，所述处理器用于从所述通信接口调用并运行指令，当所述处理器执行所述指令时，实现如权利要求1-17任一项所述的方法。
  38. 一种通信装置，其特征在于，所述装置包括至少一个处理器，所述至少一个处理器与至少一个存储器耦合：
    所述至少一个处理器，用于执行所述至少一个存储器中存储的计算机程序或指令，以使得所述装置执行如权利要求1-17任一项所述的方法。
PCT/CN2019/130914 2019-12-31 2019-12-31 一种数据传输方法、装置和系统 WO2021134677A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980103335.7A CN114902736A (zh) 2019-12-31 2019-12-31 一种数据传输方法、装置和系统
PCT/CN2019/130914 WO2021134677A1 (zh) 2019-12-31 2019-12-31 一种数据传输方法、装置和系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/130914 WO2021134677A1 (zh) 2019-12-31 2019-12-31 一种数据传输方法、装置和系统

Publications (1)

Publication Number Publication Date
WO2021134677A1 true WO2021134677A1 (zh) 2021-07-08

Family

ID=76686128

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/130914 WO2021134677A1 (zh) 2019-12-31 2019-12-31 一种数据传输方法、装置和系统

Country Status (2)

Country Link
CN (1) CN114902736A (zh)
WO (1) WO2021134677A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018202798A1 (en) * 2017-05-04 2018-11-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. UE GROUPS, UE GROUP MANAGER UEs AND UE GROUP MEMBER UEs
CN108809897A (zh) * 2017-04-28 2018-11-13 中兴通讯股份有限公司 一种中继发现及中继转发方法、设备和存储介质
CN109890014A (zh) * 2019-04-03 2019-06-14 成都中科微信息技术研究院有限公司 一种基于终端直接通信的电力无线专网的中继传输方法
WO2019127115A1 (zh) * 2017-12-27 2019-07-04 Oppo广东移动通信有限公司 传输数据的方法、终端设备和网络设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108809897A (zh) * 2017-04-28 2018-11-13 中兴通讯股份有限公司 一种中继发现及中继转发方法、设备和存储介质
WO2018202798A1 (en) * 2017-05-04 2018-11-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. UE GROUPS, UE GROUP MANAGER UEs AND UE GROUP MEMBER UEs
WO2019127115A1 (zh) * 2017-12-27 2019-07-04 Oppo广东移动通信有限公司 传输数据的方法、终端设备和网络设备
CN109890014A (zh) * 2019-04-03 2019-06-14 成都中科微信息技术研究院有限公司 一种基于终端直接通信的电力无线专网的中继传输方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
NOKIA, ALCATEL-LUCENT SHANGHAI BELL: "Sidelink resource allocation with relay UE", 3GPP DRAFT; R1-1708564 SIDELINK RESOURCE ALLOCATION WITH RELAY UE_V2, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Hangzhou, China; 20170515 - 20170519, 14 May 2017 (2017-05-14), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051273756 *
QUALCOMM INCORPORATED: "UE-to-NW Relay discovery", 3GPP DRAFT; S2-1911922, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. Reno, NV, USA; 20191118 - 20191122, 8 November 2019 (2019-11-08), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051821972 *

Also Published As

Publication number Publication date
CN114902736A (zh) 2022-08-12

Similar Documents

Publication Publication Date Title
US11503450B2 (en) Device discovery using sidelink discovery messages
WO2020143732A1 (zh) 发送和接收反馈信道的方法以及装置
WO2020248258A1 (zh) 无线通信方法、收端设备和发端设备
WO2020034223A1 (zh) Harq信息的传输方法、网络设备和终端设备
CN112311515B (zh) 一种反馈信息传输方法及装置
WO2021134659A1 (zh) 一种中继传输的方法和设备
WO2022021007A1 (zh) 无线通信方法、终端设备和网络设备
WO2021134677A1 (zh) 一种数据传输方法、装置和系统
WO2021212510A1 (zh) 一种通信方法及装置
WO2021212505A1 (zh) 一种通信方法、装置及系统
WO2020156214A1 (zh) 功率控制方法及终端设备
WO2021017804A1 (zh) 一种链路测量方法及装置
WO2021056584A1 (zh) 一种通信方法及装置
WO2021088063A1 (zh) 一种通信方法及装置
WO2021134448A1 (zh) 一种侧行数据传输的方法、装置和系统
WO2021062855A1 (zh) 一种通信方法及装置
WO2021088081A1 (zh) 一种控制信息发送方法、接收方法和通信装置
WO2021087963A1 (zh) 一种资源选择方法及装置
WO2023056822A1 (zh) 通信方法、装置、设备以及存储介质
WO2023060559A1 (zh) 无线通信的方法和终端设备
WO2021073483A1 (zh) 一种侧行信息的传输方法、装置及系统
RU2802679C1 (ru) Способ выбора ресурсов и устройство
WO2022027669A1 (zh) 传输反馈信息的方法、终端设备和网络设备
CN114503696B (zh) 一种通信方法及装置
WO2022141443A1 (zh) 一种指示信息传输的方法、装置及系统

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: 19958105

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: 19958105

Country of ref document: EP

Kind code of ref document: A1