WO2020087424A1 - 一种数据传输方法、终端设备及存储介质 - Google Patents

一种数据传输方法、终端设备及存储介质 Download PDF

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Publication number
WO2020087424A1
WO2020087424A1 PCT/CN2018/113214 CN2018113214W WO2020087424A1 WO 2020087424 A1 WO2020087424 A1 WO 2020087424A1 CN 2018113214 W CN2018113214 W CN 2018113214W WO 2020087424 A1 WO2020087424 A1 WO 2020087424A1
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Prior art keywords
terminal device
data
channel
time
occupation time
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PCT/CN2018/113214
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English (en)
French (fr)
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石聪
林亚男
徐婧
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Oppo广东移动通信有限公司
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Priority to PCT/CN2018/113214 priority Critical patent/WO2020087424A1/zh
Priority to CN201880091304.XA priority patent/CN111869308B/zh
Publication of WO2020087424A1 publication Critical patent/WO2020087424A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing

Definitions

  • the present invention relates to the field of wireless communication technology, and in particular, to a data transmission method, terminal device, and storage medium.
  • the 5G New Radio (NR) system introduces Ultra High Reliable & Low Latency Communication (URLLC) services; URLLC services require ultra high reliability (such as 99.999) within extreme delays (such as 1ms) %) Transmission. There is currently no effective solution for data transmission to achieve the ultra-high reliability and low latency of URLLC services.
  • embodiments of the present invention provide a data transmission method, terminal device, and storage medium, which can achieve ultra-high reliability and low latency of URLLC services.
  • an embodiment of the present invention provides a data transmission method, including: when a terminal device repeatedly transmits data for the first time, it determines a maximum channel occupation time of a channel;
  • the terminal device seizes the channel based on the first monitoring and avoiding mechanism until the repeated transmission ends.
  • an embodiment of the present invention provides a terminal device.
  • the terminal device includes: a processing unit configured to determine a maximum channel occupation time of a channel when data is repeatedly transmitted for the first time; When the channel occupies time, the channel is preempted based on the first monitoring and avoiding mechanism until the repeated transmission ends.
  • an embodiment of the present invention provides a terminal device, including: a processor and a memory for storing a computer program that can be run on the processor, where the processor is used to execute the above when the processor is used to run the computer program The steps of the method performed by the terminal device.
  • an embodiment of the present invention provides a storage medium that stores an executable program.
  • the executable program is executed by a processor, the data transmission method executed by the terminal device described above is implemented.
  • the terminal device determines the maximum channel occupation time of the channel when data is repeatedly transmitted for the first time; and continues to be based on the first monitoring and avoidance mechanism when the repeated transmission data exceeds the maximum channel occupation time Preempt the channel until the end of the repeated transmission.
  • the terminal device determines the maximum channel occupation time of the channel when data is repeatedly transmitted for the first time; and continues to be based on the first monitoring and avoidance mechanism when the repeated transmission data exceeds the maximum channel occupation time Preempt the channel until the end of the repeated transmission.
  • the terminal device determines the maximum channel occupation time of the channel when data is repeatedly transmitted for the first time; and continues to be based on the first monitoring and avoidance mechanism when the repeated transmission data exceeds the maximum channel occupation time Preempt the channel until the end of the repeated transmission.
  • FIG. 1 is a schematic diagram of a composition structure of a communication system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an optional processing flow applied to a data transmission method according to an embodiment of the present invention
  • 3 is a schematic diagram of the terminal device continuing to perform LBT after repeated data transmission exceeds the maximum channel occupation time according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a terminal device starting a timer after repeated data transmission exceeds the maximum channel occupation time according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of the composition of a terminal device according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a hardware composition of a terminal device according to an embodiment of the present invention.
  • Transport Block For Rel-15, multiple transmissions of a transport block (Transport Block, TB) occupy resources in different time slots (slots); that is, multiple PUSCHs carrying one TB are in multiple different slots; but At this time, it cannot meet the low latency requirements of URLLC services.
  • the UE can configure repeated data transmission by the network device, and configure the number of repeated data transmissions to be 2, 4, or 6.
  • you can also configure repeated transmission repeated transmission takes up to 8 slots.
  • Type1 In NR unlicensed spectrum, terminal equipment or network equipment needs to perform LBT before sending data.
  • LBT two access types are currently defined: Type1 and Type2.
  • Type1 the terminal equipment can choose different access priorities according to the service type; for the access method of type1, there are the following four priorities, as shown in Table 1:
  • the terminal equipment needs to listen for a fixed time of 25us before transmitting PUSCH;
  • the terminal device or the network device may not be able to occupy the channel, resulting in interruption of repeated transmission.
  • the present invention provides a data transmission method.
  • the data transmission method of the embodiment of the present application can be applied to various communication systems, such as: Global Mobile Communication (Global System of Mobile Communication (GSM) system, code division multiple access (GSM Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunications System (Universal Mobile Telecommunication System, UMTS), Global Interoperability for Microwave Access, WiMAX) communication system or 5G system, etc.
  • GSM Global Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • Universal Mobile Telecommunications System Universal Mobile Telecommunications System
  • UMTS Universal
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal).
  • the network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located within the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks or network devices in future public land mobile networks (Public Land Mobile Network, PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNodeB evolved base station in an LTE system
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, an in-veh
  • the communication system 100 also includes at least one terminal device 120 within the coverage of the network device 110.
  • terminal equipment includes, but is not limited to, connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Lines (DSL), digital cables, and direct cable connections ; And / or another data connection / network; and / or via wireless interfaces, such as for cellular networks, wireless local area networks (Wireless Local Area Network, WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and / or another terminal device configured to receive / transmit communication signals; and / or Internet of Things (IoT) equipment.
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Lines
  • WLAN wireless local area networks
  • digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter
  • IoT Internet of Things
  • a terminal device configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", “wireless terminal”, or “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communication Systems (PCS) terminals that can combine cellular radiotelephones with data processing, fax, and data communication capabilities; can include radiotelephones, pagers, Internet / internal PDA with network access, web browser, notepad, calendar, and / or Global Positioning System (GPS) receiver; and conventional laptop and / or palm-type receivers or others including radiotelephone transceivers Electronic device.
  • PCS Personal Communication Systems
  • GPS Global Positioning System
  • Terminal equipment can refer to access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or User device.
  • Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital processing (Personal Digital Assistant (PDA), wireless communication Functional handheld devices, computing devices, or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in a 5G network, or terminal devices in a future-evolving PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • terminal equipment 120 may perform terminal direct connection (Device to Device, D2D) communication.
  • the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.
  • the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.
  • network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.
  • the devices with communication functions in the network / system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 and a terminal device 120 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here
  • the communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in the embodiments of the present application.
  • the optional processing flow of the data transmission method provided by the embodiment of the present invention, as shown in FIG. 2, includes the following steps:
  • Step S201 When the terminal device repeatedly transmits data for the first time, it determines the maximum channel occupation time of the channel.
  • the network device configures the terminal device with data transmission in a repeated transmission mode; that is, the terminal device sends data in a repeated transmission mode, and the number of repeated transmissions is k times.
  • the repeatedly transmitted data is transmitted through k physical uplink shared channels (Physical Uplink Shared CHannel, PUSCH) or physical downlink shared channels (Physical Downlink Shared CHannel, PDSCH).
  • PUSCH Physical Uplink Shared CHannel
  • PDSCH Physical Downlink shared channels
  • the contents carried by the k PUSCHs or k PDSCHs are completely the same, which means that the data carried by the k PUSCHs or k PDSCHs are the same, and the information carried by the encoded data is the same; the information carried by the k PUSCHs or k PDSCHs is the same.
  • the contents are not completely the same, which means that the data carried by the k PUSCHs or k PDSCHs are the same, but the information after the encoded data is encoded is different.
  • the terminal device when the terminal device repeatedly transmits data for the first time, the terminal device preempts the channel based on LBT; after the channel preemption is successful, the terminal device determines the maximum channel occupation time.
  • the terminal device determining the maximum channel occupation time of the channel includes: the terminal device receiving the maximum channel occupation time indicated by the network device. At this time, the terminal device determines how many data retransmissions the terminal device can receive according to the maximum channel occupation time and the length of repeated transmission.
  • the terminal device determines that it can receive 2 data retransmissions.
  • Step S202 When the repeated transmission data exceeds the maximum channel occupation time, the terminal device preempts the channel based on the first LBT until the repeated transmission ends.
  • the first LBT may be an LBT type pre-configured by the network device for the terminal device; the first LBT may also be an LBT type selected by the terminal device itself, such as a type 2 access type LBT, that is, a terminal LBT device Before transmitting data, a fixed listening time of 25 ⁇ s; the first LBT may also be the LBT type adopted by the terminal device when data is repeatedly transmitted for the first time.
  • the terminal device preempting the channel based on the first LBT includes: the terminal device starting a timer and preempting the channel within the timing time of the timer.
  • the terminal device retransmits the data, that is, the same data as the first retransmitted data.
  • the terminal device successfully seizes the channel it transmits new data, that is, data that is different from the data retransmitted for the first time.
  • the terminal device preempting the channel based on the first LBT includes: the terminal device starting a timer, and when the timer expires, the terminal device preempting the channel.
  • the terminal device when the terminal device preempts the channel based on the first LBT, there may be one or more unsuccessful preemption channels; when the terminal device fails to preempt the channel based on the first LBT, the channel is preempted based on the first LBT again Repeated transmission ends.
  • the number of times the terminal device repeatedly transmits data is 5, that is, the time that the terminal device repeatedly transmits data is the time occupied by 5 slots.
  • the terminal device determines that the maximum channel occupation time of the channel performs two repeated data transmissions, that is, 2 slots are occupied. After that, the terminal device preempts the channel based on the first LBT. If the channel preemption is unsuccessful, the terminal device again preempts the channel based on the first LBT. If the terminal preempts the channel unsuccessfully at the end of the fifth slot, the terminal device stops preempting the channel .
  • Figure 3 is a schematic diagram of the terminal device continuing to perform LBT after repeated data transmission exceeds the maximum channel occupation time.
  • the terminal device performs four repeated data transmissions (rep1, rep2, rep3 and rep4) within the determined maximum channel occupation time,
  • the terminal device performs LBT, and the first LBT channel preemption fails, the second LBT channel preemption succeeds, and the maximum channel occupation time of the second LBT channel preemption can be repeated 3 times; It is the same data transmitted by rep1, rep2, rep3, and rep4.
  • Figure 4 is a schematic diagram of the terminal device starting the timer after the repeated data transmission exceeds the maximum channel occupation time; the terminal device performs four repeated data transmissions (rep1, rep2, rep3, and rep4) within the determined maximum channel occupation time, and then The terminal device starts a timer.
  • the terminal device performs LBT within the time of the timer.
  • the first LBT, the second LBT, and the third LBT preemption channel all fail, the fourth LBT preemption channel succeeds, and the The maximum channel occupancy time of the channel preempted by LBT four times can be repeated for one data transmission; at this time, the data repeatedly transmitted is new data different from the data transmitted by rep1, rep2, rep3, and rep4.
  • the LBT when the repeated transmission of data exceeds the maximum channel occupation time, the LBT may not be executed, and the repeated transmission of data ends.
  • the terminal device when the repeated transmission data exceeds the maximum channel occupation time, the terminal device continues to seize the channel based on the first LBT; so that when the repeated transmission data exceeds the maximum channel occupation time, the terminal device does not interrupt the repeated transmission, It guarantees the continuity of repeated data transmission, thereby achieving the ultra-high reliability and low latency of URLLC services.
  • An embodiment of the present invention also provides a terminal device.
  • a schematic structural diagram of the composition of the terminal device 300, as shown in FIG. 5, includes:
  • the processing unit 301 is configured to determine the maximum channel occupation time of the channel when data is repeatedly transmitted for the first time; when the repeated transmission data exceeds the maximum channel occupation time, seize the channel based on the first monitoring and avoiding mechanism until the end of the repeated transmission.
  • the first monitoring and avoiding mechanism is a pre-configured monitoring and avoiding mechanism, or the first monitoring and avoiding mechanism is the monitoring and avoiding mechanism adopted by the terminal device when data is repeatedly transmitted for the first time.
  • the processing unit is configured to start a timer, and preempt the channel within the timing time of the timer.
  • the terminal device further includes a transceiver unit 302 configured to retransmit the data after the processing unit successfully seizes the channel.
  • the processing unit 301 is further configured to preempt the channel when the timer expires.
  • the terminal device further includes a transceiver unit 302 configured to transmit new data after the processing unit successfully seizes the channel.
  • the data includes: uplink data and / or downlink data.
  • the processing unit 301 when the data includes downlink data, the processing unit 301 is configured to receive the maximum channel occupation time indicated by the network device.
  • the processing unit 301 is configured to determine the number of times that the repeated transmission can be received based on the maximum channel occupation time and the length of the repeated transmission.
  • Embodiments of the invention also provide a terminal device, including a processor and a memory for storing a computer program that can run on the processor, where the processor is used to execute the power executed by the terminal device when the computer program is executed The steps of the distribution method.
  • An embodiment of the present invention further provides a network device, including a processor and a memory for storing a computer program that can run on the processor, where the processor is used to execute Steps of the power distribution method.
  • FIG. 6 is a schematic diagram of a hardware composition structure of a terminal device according to an embodiment of the present invention.
  • the terminal device 700 includes: at least one processor 701, a memory 702, and at least one network interface 704.
  • the various components in the terminal device 700 are coupled together via a bus system 705. Understandably, the bus system 705 is used to realize the connection and communication between these components.
  • the bus system 705 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, various buses are marked as the bus system 705 in FIG. 6.
  • the memory 702 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory.
  • the non-volatile memory may be ROM, programmable read-only memory (PROM, Programmable Read-Only Memory), erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory), electrically erasable Programmable Read Only Memory (EEPROM, Electrically Erasable, Programmable Read-Only Memory), Ferromagnetic Random Access Memory (FRAM), Flash Memory (Flash), Magnetic Surface Memory, CD, or CD-ROM (CD -ROM, Compact, Disc, Read-Only, Memory); the magnetic surface memory can be either disk storage or tape storage.
  • the volatile memory may be a random access memory (RAM, Random Access Memory), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • SSRAM synchronous static random access memory
  • DRAM dynamic random access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced Type synchronous dynamic random access memory
  • SLDRAM SyncLink Dynamic Random Access Memory
  • direct memory bus random access memory DRRAM, Direct Rambus Random Access Random Access Memory
  • DRRAM Direct Rambus Random Access Random Access Memory
  • the memory 702 described in this embodiment of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.
  • the memory 702 in the embodiment of the present invention is used to store various types of data to support the operation of the terminal device 700. Examples of these data include: any computer program for operating on the terminal device 700, such as an application program 7022.
  • the program for implementing the method of the embodiment of the present invention may be included in the application program 7022.
  • the method disclosed in the foregoing embodiment of the present invention may be applied to the processor 701, or implemented by the processor 701.
  • the processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 701 or an instruction in the form of software.
  • the foregoing processor 701 may be a general-purpose processor, a digital signal processor (DSP, Digital Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like.
  • the processor 701 may implement or execute the disclosed methods, steps, and logical block diagrams in the embodiments of the present invention.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium.
  • the storage medium is located in the memory 702.
  • the processor 701 reads the information in the memory 702 and completes the steps of the foregoing method in combination with its hardware.
  • the terminal device 700 may be implemented by one or more application specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, programmable logic device (PLD, Programmable Logic Device), complex programmable logic device (CPLD , Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, MPU, or other electronic components to implement the aforementioned method.
  • ASIC Application Specific Integrated Circuit
  • DSP digital signal processor
  • PLD programmable logic device
  • CPLD Complex Programmable logic device
  • FPGA general-purpose processor
  • controller MCU, MPU, or other electronic components to implement the aforementioned method.
  • An embodiment of the present application further provides a storage medium for storing computer programs.
  • the storage medium may be applied to the terminal device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiments of the present application. .
  • These computer program instructions can be provided to the processor of a general-purpose computer, special-purpose computer, embedded processing machine, or other programmable data processing device to produce a machine that enables the generation of instructions executed by the processor of the computer or other programmable data processing device
  • These computer program instructions may also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, the instructions The device implements the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and / or block diagrams.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operating steps are performed on the computer or other programmable device to produce computer-implemented processing, which is executed on the computer or other programmable device
  • the instructions provide steps for implementing the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and / or block diagrams.

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Abstract

一种数据传输方法、终端设备及存储介质，其中方法包括：终端设备在第一次重复传输数据时，确定信道的最大信道占用时间；终端设备在重复传输数据超过最大信道占用时间时，基于第一监听避让机制抢占信道，直至重复传输结束。

Description

一种数据传输方法、终端设备及存储介质 技术领域
本发明涉及无线通信技术领域，尤其涉及一种数据传输方法、终端设备及存储介质。
背景技术
5G新无线(New Radio，NR)系统引入了超高可靠低时延通信(Ultra Reliable&Low Latency Communication，URLLC)业务；URLLC业务要求在极端的时延内(如1ms)实现超高可靠性(如99.999％)的传输。如何进行数据传输，以实现URLLC业务的超高可靠性和低时延目前尚无有效解决方案。
发明内容
为解决上述技术问题，本发明实施例提供一种数据传输方法、终端设备及存储介质，能够实现URLLC业务的超高可靠性和低时延。
第一方面，本发明实施例提供一种数据传输方法，包括：终端设备在第一次重复传输数据时，确定信道的最大信道占用时间；
所述终端设备在重复传输数据超过所述最大信道占用时间时，基于第一监听避让机制抢占信道，直至重复传输结束。
第二方面，本发明实施例提供一种终端设备，所述终端设备包括：处理单元，配置为在第一次重复传输数据时，确定信道的最大信道占用时间；在重复传输数据超过所述最大信道占用时间时，基于第一监听避让机制抢占信道，直至重复传输结束。
第三方面，本发明实施例提供一种终端设备，包括：处理器和用于存储能够在处理器上运行的计算机程序的存储器，其中，所述处理器用于运行所述计算机程序时，执行上述终端设备执行的方法的步骤。
第四方面，本发明实施例提供一种存储介质，存储有可执行程序，所述可执行程序被处理器执行时，实现上述终端设备执行的数据传输方法。
本发明实施例提供的数据传输方法，终端设备在第一次重复传输数据时，确定信道的最大信道占用时间；并在重复传输数据超过所述最大信道占用时间时，继续基于第一 监听避让机制抢占信道，直至重复传输结束。由于在重复传输数据超过所述最大信道占用时间时，继续基于第一监听避让机制抢占信道；使得重复传输数据超过所述最大信道占用时间时，终端设备不中断重复传输，保证了数据重复传输的连续性，进而实现URLLC业务的超高可靠性和低时延。
附图说明
图1为本发明实施例通信系统的组成结构示意图；
图2为本发明实施例应用于数据传输方法的可选处理流程示意图；
图3为本发明实施例终端设备在数据重复传输超出最大信道占用时间后，继续进行LBT的示意图；
图4为本发明实施例终端设备在数据重复传输超出最大信道占用时间后，启动计时器的示意图；
图5为本发明实施例提供的终端设备的组成结构示意图；
图6为本发明实施例提供的终端设备的硬件组成结构示意图。
具体实施方式
为了能够更加详尽地了解本发明实施例的特点和技术内容，下面结合附图对本发明实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本发明实施例。
在对本发明实施例进行详细说明之前，先对grant free即和LBT进行简要说明。
对于Rel-15，对于一个传输块(Transport Block，TB)的多次传输分别占用不同的时隙(slot)内的资源；即承载一个TB的多个PUSCH分别在多个不同的slot内；但是，此时不能满足URLLC业务低时延的要求。对于上行数据传输和下行数据接收，UE均可以由网络设备配置重复数据传输，并且配置重复数据传输的次数为2、4或6。对于上行配置授权(configured grant)传输，也可以配置重复传输，重复传输最多占用8个slots。
在NR非授权频谱中，终端设备或者网络设备在发送数据之前需要先执行LBT。对于LBT，目前定义了两种接入类型：Type1和Type2。
Type1，终端设备可以根据业务类型选择不同的接入优先级；对type1的接入方式，又有如下四种优先级，如下表1所示：
信道接入优先级分类(p) QCI
1 1,3,5,65,66,69,70
2 2,7
3 4,6,8,9
4 -
表1
Type2，终端设备在传输PUSCH之前需要固定侦听25us的时间；
对于不同的信道接入等级，又定义了不同的最大信道占用时间，如下表2所示：
Figure PCTCN2018113214-appb-000001
表2
但是，在配置了重复传输的终端设备中，如果重复传输超出一次信道侦听占用的最大时间，则终端设备或者网络设备有可能不能占用信道，导致重复传输中断。
基于上述问题，本发明提供一种数据传输方法，本申请实施例的数据传输方法可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统或5G系统等。
示例性的，本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括网络设备110，网络设备110可以是与终端设备120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备进行通信。可选地，该网络设备110可以是GSM系统或CDMA系统中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器，或者该网 络设备可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个终端设备120。作为在此使用的“终端设备”包括但不限于经由有线线路连接，如经由公共交换电话网络(Public Switched Telephone Networks，PSTN)、数字用户线路(Digital Subscriber Line，DSL)、数字电缆、直接电缆连接；和/或另一数据连接/网络；和/或经由无线接口，如，针对蜂窝网络、无线局域网(Wireless Local Area Network，WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器；和/或另一终端设备的被设置成接收/发送通信信号的装置；和/或物联网(Internet of Things，IoT)设备。被设置成通过无线接口通信的终端设备可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话；可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System，PCS)终端；可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System，GPS)接收器的PDA；以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端设备可以指接入终端、用户设备(User Equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端设备或者未来演进的PLMN中的终端设备等。
可选地，终端设备120之间可以进行终端直连(Device to Device，D2D)通信。
可选地，5G系统或5G网络还可以称为新无线(New Radio，NR)系统或NR网络。
图1示例性地示出了一个网络设备和两个终端设备，可选地，该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。
可选地，该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例对此不作限定。
应理解，本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统100为例，通信设备可包括具有通信功能的网络设备110和终端设备120，网络设备110和终端设备120可以为上文所述的具体设备，此处不再赘述；通信设备还可包括通信系统100中的其他设备，例如网络控制器、移动管理实体等其他网络实体，本申请实施例中对此不做限定。
本发明实施例提供的数据传输方法的可选处理流程，如图2所示，包括以下步骤：
步骤S201，终端设备在第一次重复传输数据时，确定信道的最大信道占用时间。
本发明实施例中，网络设备为终端设备配置数据传输的方式为重复传输；即终端设备采用重复传输的方式发送数据，重复传输的次数为k次。重复传输的数据通过k个物理上行共享信道(Physical Uplink Shared CHannel，PUSCH)或物理下行共享信道(Physical Downlink Shared CHannel，PDSCH)传输。k个PUSCH或k个PDSCH承载的信息完全相同或不完全相同。其中，k个PUSCH或k个PDSCH承载的内容完全相同，是指k个PUSCH或k个PDSCH承载的数据相同，且承载的数据进行编码后的信息也相同；k个PUSCH或k个PDSCH承载的内容不完全相同，是指k个PUSCH或k个PDSCH承载的数据相同，但是承载的数据进行编码后的信息不相同。终端设备在重复传输数据时，每次重复传输占用N个时域符号，N小于或等于L，L为一个时隙中包含的时域符号数。
在一些实施例中，终端设备对数据进行第一次重复传输时，终端设备基于LBT抢占信道；在抢占信道成功后，终端设备确定最大信道占用时间。
当所述数据包括下行数据时，所述终端设备确定信道的最大信道占用时间包括：所述终端设备接收网络设备指示的最大信道占用时间。此时，终端设备根据最大信道占用时间和重复传输的长度确定终端设备能够接收多少次的数据重传。
举例来说，当终端设备确定的最大信道占用时间为10ms，基于数据重复传输的次数确定重复传输的长度为4ms，则终端设备确定能够接收2次数据重传。
步骤S202，终端设备在重复传输数据超过所述最大信道占用时间时，基于第一LBT抢占信道，直至重复传输结束。
可选地，所述第一LBT可以是网络设备为终端设备预先配置的LBT类型；所述第一LBT也可以是终端设备自己选择的LBT类型，如type2接入类型的LBT，即终端LBT设备在传输数据之前，固定侦听25μs的时间；所述第一LBT还可以是终端设备在第一次重复传输数据时所采用的LBT类型。
在一些实施例中，所述终端设备基于第一LBT抢占信道，包括：所述终端设备启动计时器，在所述计时器的计时时间内抢占信道。可选地，所述终端设备在抢占信道成功后，重新传输所述数据，即与第一次重新传输的数据相同的数据。或者，所述终端设备在抢占信道成功后，传输新的数据，即与第一次重新传输的数据不同的数据。
在另一些实施例中，所述终端设备基于第一LBT抢占信道，包括：所述终端设备启动计时器，在所述计时器超时时，所述终端设备抢占信道。
本发明实施例中，终端设备基于第一LBT抢占信道时，可能会存在一次或多次抢占不成功的情况；终端设备基于第一LBT抢占信道不成功时，再次基于第一LBT抢占信道，直到重复传输结束。
举例来说，终端设备重复传输数据的次数为5次，即终端设备重复传输数据的时间为5个slot所占用的时间。终端设备在步骤S201中确定信道的最大信道占用时间内，执行了2次数据重复传输，即占用了2个slot。之后，终端设备基于第一LBT抢占信道，若抢占信道不成功，则终端设备再次基于第一LBT抢占信道，若在第5个slot结束时刻，终端抢占信道一直不成功，则终端设备停止抢占信道。
下面基于图3和图4对本发明实施例提供的数据传输方法进行进一步说明。图3为终端设备在数据重复传输超出最大信道占用时间后，继续进行LBT的示意图，终端设备在确定的最大信道占用时间内进行了四次数据重复传输(rep1、rep2、rep3和rep4)，之后终端设备进行LBT，并且第一次LBT抢占信道失败，第二次LBT抢占信道成功，且第二次LBT抢占的信道的最大信道占用时间能够进行3次数据重复传输；此时，重复传输的数据为与rep1、rep2、rep3和rep4传输的数据相同的数据。
图4为终端设备在数据重复传输超出最大信道占用时间后，启动计时器的示意图；终端设备在确定的最大信道占用时间内进行了四次数据重复传输(rep1、rep2、rep3和rep4)，之后终端设备启动计时器(timer)，终端设备在计时器的计时时间内进行LBT，第一次LBT、第二次LBT和第三次LBT抢占信道均失败，第四次LBT抢占信道成功，且第四次LBT抢占的信道的最大信道占用时间能够进行1次数据重复传输；此时，重复传输的数据为与rep1、rep2、rep3和rep4传输的数据不同的新数据。
当然，本发明实施例中，终端设备在重复传输数据超过所述最大信道占用时间时，也可以不执行LBT，此时重复传输数据结束。
本发明实施例中，由于在重复传输数据超过所述最大信道占用时间时，终端设备继续基于第一LBT抢占信道；使得重复传输数据超过所述最大信道占用时间时，终端设 备不中断重复传输，保证了数据重复传输的连续性，进而实现URLLC业务的超高可靠性和低时延。
本发明实施例还提供一种终端设备，所述终端设备300的组成结构示意图，如图5所示，包括：
处理单元301，配置为在第一次重复传输数据时，确定信道的最大信道占用时间；在重复传输数据超过所述最大信道占用时间时，基于第一监听避让机制抢占信道，直至重复传输结束。
其中，所述第一监听避让机制为预先配置的监听避让机制，或者所述第一监听避让机制为所述终端设备在第一次重复传输数据时所采用的监听避让机制。
本发明实施例中，所述处理单元，配置为启动计时器，在所述计时器的计时时间内，抢占信道。
本发明实施例中，所述终端设备还包括：收发单元302，配置为在所述处理单元抢占信道成功后，重新传输所述数据。
本发明实施例中，所述处理单元301，还配置为在所述计时器超时时，抢占信道。
本发明实施例中，所述终端设备还包括：收发单元302，配置为在所述处理单元抢占信道成功后，传输新的数据。
本发明实施例中，所述数据包括：上行数据和/或下行数据。
本发明实施例中，所述数据包括下行数据时，所述处理单元301，配置为接收网络设备指示的最大信道占用时间。
所述处理单元301，配置为基于所述最大信道占用时间和重复传输的长度确定能够接收重复传输的次数。
发明实施例还提供一种终端设备，包括处理器和用于存储能够在处理器上运行的计算机程序的存储器，其中，所述处理器用于运行所述计算机程序时，执行上述终端设备执行的功率分配方法的步骤。
本发明实施例还提供一种网络设备，包括处理器和用于存储能够在处理器上运行的计算机程序的存储器，其中，所述处理器用于运行所述计算机程序时，执行上述网络设备执行的功率分配方法的步骤。
图6是本发明实施例的或终端设备的硬件组成结构示意图，终端设备700包括：至少一个处理器701、存储器702和至少一个网络接口704。终端设备700中的各个组件通过总线系统705耦合在一起。可理解，总线系统705用于实现这些组件之间的连接通 信。总线系统705除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图6中将各种总线都标为总线系统705。
可以理解，存储器702可以是易失性存储器或非易失性存储器，也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ROM、可编程只读存储器(PROM，Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM，Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM，Electrically Erasable Programmable Read-Only Memory)、磁性随机存取存储器(FRAM，ferromagnetic random access memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM，Compact Disc Read-Only Memory)；磁表面存储器可以是磁盘存储器或磁带存储器。易失性存储器可以是随机存取存储器(RAM，Random Access Memory)，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(SRAM，Static Random Access Memory)、同步静态随机存取存储器(SSRAM，Synchronous Static Random Access Memory)、动态随机存取存储器(DRAM，Dynamic Random Access Memory)、同步动态随机存取存储器(SDRAM，Synchronous Dynamic Random Access Memory)、双倍数据速率同步动态随机存取存储器(DDRSDRAM，Double Data Rate Synchronous Dynamic Random Access Memory)、增强型同步动态随机存取存储器(ESDRAM，Enhanced Synchronous Dynamic Random Access Memory)、同步连接动态随机存取存储器(SLDRAM，SyncLink Dynamic Random Access Memory)、直接内存总线随机存取存储器(DRRAM，Direct Rambus Random Access Memory)。本发明实施例描述的存储器702旨在包括但不限于这些和任意其它适合类型的存储器。
本发明实施例中的存储器702用于存储各种类型的数据以支持终端设备700的操作。这些数据的示例包括：用于在终端设备700上操作的任何计算机程序，如应用程序7022。实现本发明实施例方法的程序可以包含在应用程序7022中。
上述本发明实施例揭示的方法可以应用于处理器701中，或者由处理器701实现。处理器701可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器701中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器701可以是通用处理器、数字信号处理器(DSP，Digital Signal Processor)，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。处理器701可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是 微处理器或者任何常规的处理器等。结合本发明实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于存储器702，处理器701读取存储器702中的信息，结合其硬件完成前述方法的步骤。
在示例性实施例中，终端设备700可以被一个或多个应用专用集成电路(ASIC，Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、FPGA、通用处理器、控制器、MCU、MPU、或其他电子元件实现，用于执行前述方法。
本申请实施例还提供了一种存储介质，用于存储计算机程序。
可选地，该存储介质可应用于本申请实施例中的终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (22)

  1. 一种数据传输方法，所述方法包括：
    终端设备在第一次重复传输数据时，确定信道的最大信道占用时间；
    所述终端设备在重复传输数据超过所述最大信道占用时间时，基于第一监听避让机制抢占信道，直至重复传输结束。
  2. 根据权利要求1所述的方法，其中，所述第一监听避让机制为预先配置的监听避让机制。
  3. 根据权利要求1所述的方法，其中，所述第一监听避让机制为所述终端设备在第一次重复传输数据时所采用的监听避让机制。
  4. 根据权利要求1至3任一项所述的方法，其中，所述基于第一监听避让机制抢占信道，包括：
    所述终端设备启动计时器，所述终端设备在所述计时器的计时时间内，抢占信道。
  5. 根据权利要求4所述的方法，其中，所述终端设备抢占信道成功后，所述方法还包括：
    所述终端设备重新传输所述数据。
  6. 根据权利要求4所述的方法，其中，在所述计时器超时时，所述方法还包括：
    所述终端设备抢占信道。
  7. 根据权利要求4所述的方法，其中，所述终端设备抢占信道成功后，所述方法还包括：
    所述终端设备传输新的数据。
  8. 根据权利要求1至7任一项所述的方法，其中，所述数据包括：上行数据和/或下行数据。
  9. 根据权利要求8所述的方法，其中，所述数据包括下行数据时，所述确定信道的最大信道占用时间，包括：
    所述终端设备接收网络设备指示的最大信道占用时间。
  10. 根据权利要求9所述的方法，其中，所述终端设备基于所述最大信道占用时间和重复传输的长度确定能够接收重复传输的次数。
  11. 一种终端设备，所述终端设备包括：
    处理单元，配置为在第一次重复传输数据时，确定信道的最大信道占用时间；在重 复传输数据超过所述最大信道占用时间时，基于第一监听避让机制抢占信道，直至重复传输结束。
  12. 根据权利要求11所述的终端设备，其中，所述第一监听避让机制为预先配置的监听避让机制。
  13. 根据权利要求11所述的终端设备，其中，所述第一监听避让机制为所述终端设备在第一次重复传输数据时所采用的监听避让机制。
  14. 根据权利要求11至13任一项所述的终端设备，其中，所述处理单元，配置为启动计时器，在所述计时器的计时时间内，抢占信道。
  15. 根据权利要求14所述的终端设备，其中，所述终端设备还包括：
    收发单元，配置为在所述处理单元抢占信道成功后，重新传输所述数据。
  16. 根据权利要求14所述的终端设备，其中，所述处理单元，还配置为在所述计时器超时时，抢占信道。
  17. 根据权利要求14所述的终端设备，其中，所述终端设备还包括：
    收发单元，配置为在所述处理单元抢占信道成功后，传输新的数据。
  18. 根据权利要求11至17任一项所述的终端设备，其中，所述数据包括：上行数据和/或下行数据。
  19. 根据权利要求18所述的终端设备，其中，所述数据包括下行数据时，所述处理单元，配置为接收网络设备指示的最大信道占用时间。
  20. 根据权利要求19所述的终端设备，其中，所述处理单元，配置为基于所述最大信道占用时间和重复传输的长度确定能够接收重复传输的次数。
  21. 一种终端设备，包括处理器和用于存储能够在处理器上运行的计算机程序的存储器，其中，
    所述处理器用于运行所述计算机程序时，执行权利要求1至10任一项所述的数据传输方法的步骤。
  22. 一种存储介质，存储有可执行程序，所述可执行程序被处理器执行时，实现权利要求1至10任一项所述的数据传输方法。
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