WO2021212475A1 - 数据传输方法及装置 - Google Patents

数据传输方法及装置 Download PDF

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Publication number
WO2021212475A1
WO2021212475A1 PCT/CN2020/086718 CN2020086718W WO2021212475A1 WO 2021212475 A1 WO2021212475 A1 WO 2021212475A1 CN 2020086718 W CN2020086718 W CN 2020086718W WO 2021212475 A1 WO2021212475 A1 WO 2021212475A1
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WIPO (PCT)
Prior art keywords
window
listening
listening window
time
drx
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PCT/CN2020/086718
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English (en)
French (fr)
Inventor
苏宏家
郭文婷
陈二凯
向铮铮
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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.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202080096420.8A priority Critical patent/CN115088341A/zh
Priority to PCT/CN2020/086718 priority patent/WO2021212475A1/zh
Publication of WO2021212475A1 publication Critical patent/WO2021212475A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to the field of communication technology, and in particular to a data transmission method and device.
  • D2D device-to-device
  • the sending terminal can select the time-frequency resource for sending data by itself. For example, if the sending terminal is triggered to perform resource selection at time n, the sending terminal can perform resource selection on the selection window after time n according to the listening result in the sensing window before time n . Specifically, referring to FIG. 1, the sending terminal determines the time-frequency resources used by other terminals on the selection window according to the listening results in the listening window, and sets the time-frequency resources in the selection window other than the time-frequency resources used by other terminals Determine the time-frequency resources that can send data, thereby preventing resource conflicts between different terminals.
  • This kind of listening and resource selection mechanism is designed when the sending terminal is working in a normal state. If the sending terminal works in discontinuous reception (DRX) mode, the sending terminal can receive the side chain during the DRX activation time. The control information and data information of the side link are not received during the DRX inactive time.
  • DRX discontinuous reception
  • the embodiments of the present application provide a data transmission method and device, which can be applied to the Internet of Vehicles, for example, vehicle to everything (V2X) communication, and workshop communication (long term evolution-vehicle, LTE-V) , Vehicle-to-vehicle (V2V) communication, etc., or can be used in intelligent driving, intelligent networked vehicles and other fields to realize autonomous resource selection when the sending terminal works in DRX mode, reducing the sending terminal The collision probability between the used resources and the resources used by other terminals improves the transmission reliability.
  • V2X vehicle to everything
  • workshop communication long term evolution-vehicle, LTE-V
  • V2V Vehicle-to-vehicle
  • a data transmission method including: determining a first listening window, determining a selection window based on the first listening window and a first time period, determining a first resource in the selection window, send data.
  • the first time period includes part or all of the DRX activation time.
  • the method provided in the first aspect takes into account the DRX activation time of the sending terminal when selecting resources, so that the selection window is determined according to the DRX activation time of the sending terminal, so that resource selection is more reasonable, and the resources used by the sending terminal and other terminals are reduced. The collision probability of the used resources improves the transmission reliability.
  • determining the selection window according to the first listening window and the first time period includes: the overlapping part of the first listening window and the first time period is less than or equal to the first threshold, and determining the second detection window.
  • the overlapping portion of the first listening window and the first time period is less than or equal to the first threshold, and the sending terminal cannot obtain sufficient listening information. As a result, the listening result cannot fully reflect the channel usage.
  • Some selection windows randomly select resources or determine incomplete interception results based on insufficient interception information, which increases the collision probability between the selected resources and the resources selected by other terminals, thereby reducing the transmission reliability of the entire system.
  • the sending terminal determines the second listening window and the selection window, and performs resource selection in the selection window, which can reduce the probability of resource conflicts and improve transmission reliability. As the probability of resource conflict decreases, the number of times the sending terminal selects resources decreases, and therefore, resource utilization can also be improved.
  • determining the first resource in the selection window includes: determining the first resource in the selection window according to a listening result in the second listening window. In this possible implementation manner, enough listening results can be heard in the second listening window, so that resource selection can be made rationally.
  • the method further includes: if the state at the beginning of the second listening window is the inactive state of DRX, switching to the active state of DRX and continuing the active state of DRX at least until the first The second listening window ends; or, if the state at the start time of the second listening window is the active state of DRX, the active state of DRX is continued at least until the end of the second listening window.
  • This possible implementation can ensure that the second listening window is in an active state, so that the second listening window can be used for listening.
  • the time interval between the second listening window and the selection window is greater than or equal to the time required for processing the listening result and determining the first resource. This possible implementation can ensure that the resource selection can be completed before the selection window.
  • the first listening window is determined at time n
  • the start time of the second listening window is (n+t A )
  • the end time is (n+t B )
  • t A is greater than Or equal to the time required to determine the first listening window, the second listening window, and the selection window, 0 ⁇ t A ⁇ t B.
  • This possible implementation provides a possible range of the second listening window.
  • the start time of the selection window is (n+t B + t D + t E ), the end time is (n+t F ), and t D is greater than or equal to what is needed to process the listening result T D ⁇ 0, t E is greater than or equal to the time required to determine the first resource, t E ⁇ 0, t B + t D + t E ⁇ t F ⁇ the second threshold.
  • This possible implementation provides a possible range of selection windows.
  • the selection window is determined according to the first listening window and the first time period, and the first resource is determined in the selection window, including: the overlapping part of the first listening window and the first time period is greater than the first time period.
  • a threshold is used to determine the first resource in the selection window according to the listening result in the overlapping portion of the first listening window and the first time period, and the selection window is located after the first listening window. The overlapping portion of the first listening window and the first time period is greater than the first threshold, and the sending terminal can obtain enough listening results. Therefore, the existing method can be used for resource selection.
  • the first time period is all DRX activation times in the first listening window; or, the first time period is the DRX duration in the first listening window.
  • This possible implementation provides two possible situations in the first time period.
  • a communication device in a second aspect, includes a processing unit and a transceiving unit; the processing unit is configured to determine a first listening window, and determine a selection window according to the first listening window and a first time period.
  • the first resource is determined within; where the first time period includes part or all of the DRX activation time; the transceiver unit is configured to send data on the first resource.
  • the overlapping portion of the first listening window and the first time period is less than or equal to the first threshold
  • the processing unit is specifically configured to determine the second listening window and the selection window, where the second listening window The listening window is located behind the first listening window, and the selection window is located behind the second listening window.
  • the processing unit is specifically configured to: determine the first resource in the selection window according to the listening result in the second listening window.
  • the processing unit is further configured to switch to the active state of DRX and continue the active state of DRX at least until the state at the beginning of the second listening window is the inactive state of DRX.
  • the second listening window ends; or, the processing unit is further configured to, when the state at the start time of the second listening window is the active state of DRX, continue the active state of DRX at least until the end of the second listening window.
  • the time interval between the second listening window and the selection window is greater than or equal to the time required for processing the listening result and determining the first resource.
  • the first listening window is determined by the processing unit at time n
  • the start time of the second listening window is (n+t A )
  • the end time is (n+t B )
  • t A is greater than or equal to the time required to determine the first listening window, the second listening window, and the selection window, 0 ⁇ t A ⁇ t B.
  • the start time of the selection window is (n+t B + t D + t E )
  • the end time is (n+t F )
  • t D is greater than or equal to what is needed to process the listening result
  • T D ⁇ 0, t E is greater than or equal to the time required to determine the first resource, t E ⁇ 0, t B + t D + t E ⁇ t F ⁇ the second threshold.
  • the overlapping part of the first listening window and the first time period is greater than the first threshold
  • the processing unit is specifically configured to perform according to the information in the overlapping part of the first listening window and the first time period.
  • the listening result determines the first resource in the selection window, and the selection window is located behind the first listening window.
  • the first time period is all DRX activation times in the first listening window; or, the first time period is the DRX duration in the first listening window.
  • a communication device including: a processor.
  • the processor is connected to the memory.
  • the memory may be integrated or arranged in the communication device, or may be arranged outside the communication device.
  • the memory is used to store computer-executable instructions, and the processor executes the computer-executable instructions stored in the memory to achieve Any one of the methods provided in the first aspect.
  • the memory and the processor may be integrated together, or may be independent devices.
  • the processor includes a logic circuit, and also includes at least one of an input interface and an output interface.
  • the output interface is used to execute the sending action in the corresponding method
  • the input interface is used to execute the receiving action in the corresponding method.
  • the communication device further includes a communication interface and a communication bus, and the processor, the memory, and the communication interface are connected through the communication bus.
  • the communication interface is used to perform the sending and receiving actions in the corresponding method.
  • the communication interface may also be called a transceiver.
  • the communication interface includes at least one of a transmitter and a receiver. In this case, the transmitter is used to perform the sending action in the corresponding method, and the receiver is used to perform the receiving action in the corresponding method.
  • the communication device may be a chip or a system on a chip.
  • a communication device in a fourth aspect, includes a processor and an interface circuit; the interface circuit is used to receive code instructions and transmit them to the processor; and the processor is used to run the code instructions to execute the code instructions provided in the first aspect. Any one of the methods.
  • a terminal is provided, and the terminal can execute any method provided in the first aspect.
  • a communication system including: a sending terminal and a receiving terminal, where the sending terminal is used to execute any one of the methods provided in the first aspect.
  • a communication system including: an access network device, a sending terminal, and at least one receiving terminal, where the sending terminal is used to execute any one of the methods provided in the first aspect.
  • a readable storage medium for storing instructions, and when the instructions are executed, any one of the methods provided in the first aspect is implemented.
  • a computer-readable storage medium for storing a computer program, and the computer program can be executed by a processor to implement any one of the methods provided in the first aspect.
  • a computer program product including instructions, which when run on a computer, cause the computer to execute any of the methods provided in the first aspect.
  • a computer program is provided. When the computer program is executed, any one of the methods provided in the first aspect is executed.
  • FIG. 1 is a schematic diagram of a listening window and a selection window provided by an embodiment of this application;
  • FIG. 2 is a schematic diagram of communication between terminals according to an embodiment of the application.
  • FIG. 3 is a schematic diagram of the location of a terminal and the coverage area of an access network device according to an embodiment of the application;
  • FIG. 4 is a schematic diagram of V2X communication provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of another listening window and selection window provided by an embodiment of this application.
  • FIG. 6 is a schematic diagram of a DRX activation time provided by an embodiment of this application.
  • FIG. 7 is a flowchart of a data transmission method provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of a first listening window provided by an embodiment of this application.
  • FIG. 9 is a schematic diagram of another first listening window provided by an embodiment of this application.
  • FIG. 10 is a schematic diagram of a second listening window and a first selection window provided by an embodiment of this application.
  • FIG. 11 is a flowchart of yet another data transmission method provided by an embodiment of this application.
  • FIG. 12 is a schematic diagram of a communication device provided by an embodiment of this application.
  • FIG. 13 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of this application.
  • FIG. 14 is a schematic diagram of the hardware structure of another communication device provided by an embodiment of the application.
  • FIG. 15 is a schematic diagram of the hardware structure of a sending terminal according to an embodiment of the application.
  • A/B can mean A or B.
  • “And/or” in this article is only an association relationship describing the associated objects, which means that there can be three kinds of relationships.
  • a and/or B can mean: A alone exists, A and B exist at the same time, and B exists alone. These three situations.
  • “at least one” means one or more, and “plurality” means two or more.
  • the words “first” and “second” do not limit the quantity and order of execution, and the words “first” and “second” do not limit the difference.
  • the communication systems to which the method provided in the embodiments of this application are applicable include but are not limited to fifth-generation (5th-generation, 5G) systems, new radio (NR) systems, wireless local area networks (WLAN) systems, and future Evolved system or multiple communication fusion systems.
  • 5G fifth-generation
  • NR new radio
  • WLAN wireless local area networks
  • future Evolved system or multiple communication fusion systems include but are not limited to fifth-generation (5th-generation, 5G) systems, new radio (NR) systems, wireless local area networks (WLAN) systems, and future Evolved system or multiple communication fusion systems.
  • the 5G system can be a non-standalone (NSA) 5G system or a standalone (SA) 5G system.
  • the method provided by the embodiment of the present application mainly relates to the communication between the terminal and the terminal.
  • the two communication terminals in the embodiment of the present application may both be in the coverage area of the access network equipment (see (a) in Figure 3), or one may be in the coverage area of the access network equipment, and the other may not be in the coverage area of the access network equipment.
  • Within the coverage area of the access network equipment see (b) in Figure 3), it is also possible that none of them are within the coverage area of the access network equipment (see (c) in Figure 3).
  • the communication link for direct communication between the terminal and the terminal may be referred to as a side link (sidelink, SL) or a side link.
  • the sending terminal can send sidelink control information (SCI) and sideline data to the receiving terminal within one time unit, and the SCI is used to schedule the sideline data.
  • the receiving terminal can determine the position of the sending terminal to send the side line data by receiving the SCI, and receive the side line data at the corresponding position.
  • the sending terminal can directly send data to the receiving terminal, without first sending the data to the access network device, and then forwarding it through the core network, and then sending it to the receiving terminal, which can greatly reduce the data transmission time. Extension.
  • the time unit in the embodiment of the present application is a resource unit in a time domain resource.
  • the time unit in the embodiment of the present application is a collection of multiple consecutive orthogonal frequency division multiplexing (OFDM) symbols.
  • OFDM orthogonal frequency division multiplexing
  • the time unit may be a minislot (minislot), a time slot (slot), a subframe (subframe), a transmission time interval (TTI), etc.
  • the SL time domain resource used for D2D or V2X communication can be several consecutive symbols in a time slot. For example, 8 symbols in a time slot are used for SL transmission and SL reception, and in one time slot
  • the symbols used for SL transmission and SL reception can be configured by the access network device or pre-configured by the user.
  • the time unit can also be referred to as a time domain unit, time domain granularity, and so on.
  • the time unit is taken as an example to illustrate the method provided in the embodiment of the present application. It is understandable that all the time slots in the following can be replaced with time units and are not limited to time slots.
  • V2X unmanned driving
  • autonomous driving ADS
  • driver assistance ADAS
  • intelligent driving Connected driving, intelligent network driving, car sharing, etc.
  • V2X refers to the communication between the car and anything. Telematics generally refer to information provided by the vehicle sensors in the car load, car terminal, etc., to achieve a vehicle to the vehicle (vehicle to vehicle, V2V), vehicle-to-infrastructure (vehicle to infrastructure, V2I), the vehicle network (vehicle to network, V2N) and a communication network for mutual communication between vehicles to pedestrians (V2P).
  • V2X communication is aimed at high-speed devices represented by vehicles. It is the basic technology and key technology applied in scenarios with very high communication delay requirements in the future, such as smart cars, autonomous driving, intelligent transportation systems and other scenarios.
  • Vehicle users can send some of their own information, such as position, speed, intent (turning, merging, reversing), etc. to the surrounding V- UE sends, similarly, V-UE will also receive information from surrounding users in real time.
  • V-UE Vehicle users
  • FIG. 4 shows an example of V2V communication
  • FIG. 4 shows an example of V2P communication
  • FIG. 4 shows an example of Example of V2I/V2N communication.
  • the access network device involved in the embodiments of the present application is an entity on the network side that is used to send signals, receive signals, or send signals and receive signals.
  • the access network equipment can be a device deployed in a radio access network (RAN) to provide wireless communication functions for the terminal, such as a transmission reception point (TRP), a base station, and various forms of control Nodes (for example, a network controller, a wireless controller (for example, a wireless controller in a cloud radio access network (CRAN) scenario)), etc.
  • RAN radio access network
  • UMTS universal mobile telecommunications system
  • eNB evolved node B
  • Heterogeneous Network HetNet
  • An eNB can be a baseband unit (BBU) and a remote radio unit (RRU) in a distributed base station scenario, or a baseband pool (BBU pool) and RRU in a CRAN scenario.
  • BBU baseband unit
  • RRU remote radio unit
  • BBU pool baseband pool
  • CRAN CRAN scenario
  • the NR system can be a next generation node base station (gNB).
  • the control node may be connected to multiple base stations and configure resources for multiple terminals covered by the multiple base stations.
  • the access network equipment may also be the access network equipment in the public land mobile network (PLMN) that will evolve in the future.
  • PLMN public land mobile network
  • the terminal involved in the embodiments of the present application is an entity on the user side that is used to receive signals, or send signals, or receive signals and send signals.
  • the terminal is used to provide users with one or more of voice services and data connectivity services.
  • the terminal can also be called user equipment (UE), terminal equipment, access terminal, user unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user Device.
  • the terminal can be a V2X device, for example, a smart car (smart car or intelligent car), a digital car (digital car), an unmanned car (unmanned car or driverless car or pilotless car or automobile), and an automatic car (self-driving car or autonomous car).
  • the terminal can also be a D2D device, such as an electric meter, a water meter, and so on.
  • the terminal can also be a mobile station (MS), subscriber unit (subscriber unit), drone, Internet of things (IoT) equipment, station (ST) in WLAN, and cellular phone (cellular phone).
  • the terminal may also be a terminal in a next-generation communication system, for example, a terminal in a 5G system or a terminal in a future evolved PLMN, a terminal in an NR system, and so on.
  • mode-1 the resource allocation mode for the access network equipment
  • mode-2 the self-selected resource mode of the sending terminal
  • Mode-1 is mainly applied to D2D communication or V2X communication when the sending terminal is in the coverage area of the access network device, and the access network device performs resource allocation for the sending terminal.
  • Mode-2 is not limited to network coverage.
  • the sending terminal can also perform D2D communication or V2X communication with the receiving terminal.
  • the resource allocation of the sending terminal does not depend on the access network equipment.
  • the resources mentioned in the embodiments of the present application include time domain resources and/or frequency domain resources.
  • PSCCH Physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • PSCCH and PSSCH are both physical channels between terminals.
  • the PSCCH is mainly used to carry control information of side link data.
  • PSSCH is mainly used to carry side link data, and can also carry control information.
  • the SCI may include two stages, the first-stage SCI (1st-stage SCI), which may be carried in the PSCCH.
  • the second-stage SCI (2nd-stage SCI) bit is more flexible.
  • the first-stage SCI indicates at least one of its format (including different information fields), size, code rate, and resource, which can be carried in the PSSCH.
  • the sending terminal obtains the listening result in the listening window, and according to the listening result in the listening window, excludes unavailable time-frequency resources in the selection window.
  • the time-frequency resources available in the selection window are obtained, and the time-frequency resources are determined from the available time-frequency resources to send data.
  • the range of the listening window is [nt 0 , nt proc, 0 ].
  • t 0 is used to determine the boundary value of the listening window (that is, nt 0 ).
  • t 0 is related to the subcarrier spacing. Exemplarily, in the case of 15 kHz subcarrier spacing, t 0 is 1100 time slots or 100 time slots. In the case of 60 kHz subcarrier spacing, t 0 is 4400 time slots or 400 time slots.
  • t proc, 0 is the time required for the sending terminal to process the listening result, t proc, 0 ⁇ 0, t proc, 0 takes different values according to the different capabilities of the sending terminal.
  • the range of the selection window is [n+t 1 , n+t 2 ].
  • 0 ⁇ t 1 ⁇ t proc, 1 , t proc, 1 is the time required for the sending terminal to process the data to be sent , and the value of 1 is different according to the different capabilities of the sending terminal.
  • PDB is the maximum delay time required for a data packet from the business layer to be successfully sent.
  • the PDB may be a value that measures the delay of data to be sent in units of time slots, subframes, or frames, or it may be a value that measures the delay of data to be sent in units of milliseconds (ms) or seconds (s).
  • the remaining PDB is the remaining delay time when the data packet is generated from the service layer to time slot n.
  • the remaining PDB is 20ms and one time slot is 0.5ms, then in time slot n+1, the remaining PDB is 19.5ms, and in time slot n+2, the remaining PDB is 19ms.
  • the specific resource selection process of the sending terminal includes:
  • the sending terminal receives the SCI from other terminals in the resource pool in the listening window [nt 0 , nt proc, 0 ], and the SCI contains the listening information of other terminals. Further, the SCI is a first-stage SCI (1st-stage SCI), which is sent on a physical sidelink control channel (PSCCH).
  • PSCCH physical sidelink control channel
  • one SCI can schedule at least one transmission, for example, 3 transmissions.
  • the first transmission of the three transmissions is the initial transmission of a piece of data
  • the last two transmissions are the retransmissions of the data
  • the three transmissions are retransmissions of a certain piece of data.
  • the interception information included in the SCI includes time-frequency resource information of the second and third retransmitted scheduling data, periodic time-frequency resource information that reflects the data service cycle, and data priority information (priority of PSSCH), etc. . It is understandable that at a given moment, a terminal sends an SCI to reserve the time-frequency resource after that moment for the retransmission of one data and/or the transmission of another new periodic data.
  • the sending terminal learns from the received SCI listening information from terminal 1 that the time-frequency resource reserved by terminal 1 is within the selection window [n+t 1 , n+t 2 ] of the sending terminal, then send According to the listening information, the terminal measures the data or the demodulation reference signal (DMRS) of the control channel that the terminal 1 needs to send on the time-frequency resource, and obtains the reference signal received power (RSRP). ). If the RSRP is greater than the preset or RSRP threshold Th RSRP configured by the access network device, the sending terminal excludes the time-frequency resource from the selection window.
  • DMRS demodulation reference signal
  • Th RSRP configured by the access network device
  • the sending terminal can determine that the remaining time-frequency resources in the selection window are available time-frequency resources, so as to select the time-frequency resources from the available time-frequency resources to send data .
  • One way to achieve this is to randomly select a time-frequency resource from the available time-frequency resources for sending data.
  • the time-frequency resource used by the sending terminal when sending data is based on the listening result (that is, the determined available resource) of the sending terminal in the listening window [nt 0 , nt proc, 0 ]. Selected.
  • the interception result refers to the result determined through the above three steps of 1), 2), and 3).
  • the packet-based data flow is usually sudden or the transmission period of periodic data is long, that is, there is data transmission for a period of time, but there may be no data transmission for a longer period of time in the following period.
  • the DRX mode means that the terminal only turns on the receiver to receive side link information during the necessary time period, and turns off the receiver during the remaining time period and does not receive side link information to save power consumption of the terminal Working mode.
  • the time period during which the side link information can be received is called the DRX active time (DRX active time) (also called wake-up time), and the state in which the side link information can be received can be called the active state (also called the active state). Wake state).
  • the time period during which side link information is not received is called DRX inactive time (DRX inactive time) (also called sleep time), and the state of not receiving side link information can be called inactive state (also called DRX inactive time). Sleep state).
  • the terminal can receive the control information and data information of the side link, and in the inactive state, the terminal does not receive the control information and/or data information of the side link.
  • the terminal can be configured into the DRX mode of the side link by other terminals or access network equipment.
  • the terminal In the connected DRX mode, the terminal cannot always turn off the receiver, it must turn on the receiver periodically, and continue to receive side link information for a period of time afterwards. This period of time is called DRX On Duration. Controlled by the DRX On Duration Timer (DRX On Duration Timer), the duration of the timer can be set by parameters. Among them, referring to FIG. 6, the interval between two occurrences of DRX duration is the DRX cycle (DRX Cycle) of the DRX mode.
  • DRX Cycle DRX cycle
  • a DRX cycle includes multiple DRX activation time periods.
  • One DRX activation time period is the DRX duration, and the remaining DRX activation time periods can be configured.
  • the multiple DRX activation time periods constitute a DRX activation time, and the multiple DRX activation time periods may be continuous or discontinuous. In FIG. 6, discontinuous is used as an example for drawing.
  • the DRX-related information (for example, DRX activation time, DRX cycle, DRX duration, DRX inactivation time, etc.) in the embodiments of the present application all refers to side link information.
  • the embodiments of the present application provide a data transmission method.
  • the resource allocation mode of the sending terminal is mode-2, that is, the sending terminal independently selects resources and sends the data to the receiving terminal according to the selected resources.
  • the terminal sends sideline data, as shown in Figure 7, the method includes:
  • the execution subject of step 701 may be a communication device, for example, a sending terminal, a chip in the sending terminal, a system on a chip in the sending terminal, and so on.
  • a communication device for example, a sending terminal, a chip in the sending terminal, a system on a chip in the sending terminal, and so on.
  • the method provided by the present application will be exemplified by taking the communication device as the sending terminal as an example, but the present invention is not limited to this.
  • the sending terminal uses the DRX mode to communicate with the receiving terminal.
  • the information related to the DRX mode in the embodiments of the present application refers to the information related to the DRX mode of the sending terminal.
  • the following DRX activation time and DRX duration all refer to the DRX activation time and DRX duration of the sending terminal.
  • the sending terminal may determine the first listening window at time n.
  • the time n may be a time unit n, for example, it may specifically be a time slot n, a subframe n, a symbol n, and so on.
  • step 701 if the physical (PHY) layer of the sending terminal is triggered by medium access control (MAC) at time n to make resource selection based on the listening result, the sending terminal determines at time n Perform resource selection, and then determine the first listening window at time n.
  • the MAC layer can trigger the PHY layer to select resources when there is data to be sent.
  • the first listening window is [nt 0 , nt proc, 0 ] above.
  • the first time period includes part or all of the DRX activation time.
  • the sending terminal determines the selection window according to the first listening window and the first time period, and determines the available resources in the selection window (for the specific process, please refer to the above and will not be repeated), among the available resources
  • the first resource is determined, for example, a time-frequency resource is randomly selected from the available time-frequency resources as the first resource.
  • the first time period has the following three cases (denoted as case 1 to case 3).
  • the first time period is all the DRX activation time in the first listening window.
  • the sending terminal may determine all the DRX activation times in the first listening window according to the DRX configuration, and then determine the first time period.
  • the first listening window is the first listening window 1
  • the first time period includes: T1, T2, and T3
  • the first listening window is The window is the first listening window 2
  • the first time period includes: T3, T4, and T5.
  • the first listening window is the first listening window 1
  • the first time period includes: T1, T2, and T3
  • the first listening window is the first listening window, Listening window 2
  • the first time period includes: T1, T2, T3, T4, and T5.
  • the first time period is the DRX duration in the first listening window.
  • the DRX duration is a part of the total DRX activation time.
  • part of the DRX activation time is the DRX duration.
  • the sending terminal may determine all the DRX durations in the first listening window according to the DRX configuration, and then determine the first time period.
  • the first listening window is the first listening window 1
  • the first time period includes: T1
  • the first listening window is the first Listening window 2
  • the first time period includes: T4.
  • the first time period includes: T1; if the first listening window is the first listening window 2, Then the first time period includes: T1 and T4.
  • the first time period is the partial DRX activation time in the first listening window, and the partial DRX activation time includes at least the DRX duration.
  • which DRX activation time belongs to the first time period may be preset, may also be configured by the access network device for the sending terminal, or may be specified in the protocol, which is not limited in this application.
  • the first time period may include: T1 and T2; if the first listening window is the first listening window Window 2, then the first time period may include: T1, T2, and T4.
  • the first time period may also be other DRX activation time, for example, the DRX activation time that does not include the DRX duration, which is not limited in this application.
  • step 702 is also different, which will be described separately in the following through the case (1) and the case (2). It is understandable that, in the above cases 1 to 3, since the first time period is determined within the first listening window, the first time period is the part where the first listening window and the first time period overlap .
  • Case (1) The overlapping part of the first listening window and the first time period is less than or equal to the first threshold.
  • Case (1) includes: the first listening window does not overlap with the first time period (that is, the sending terminal is always in an inactive state within the first listening window), or, the first listening window and the first The overlapping part of the time period is greater than 0 and less than or equal to the first threshold (that is, within the first listening window, the time during which the transmitting terminal is in the active state is greater than 0 and less than or equal to the first threshold).
  • Case (1) can also be understood as: the total number of time slots in the receiving state of the transmitting terminal in the first listening window is less than or equal to the preset number of time slots.
  • step 702 may include: determining a second listening window and a selection window (denoted as the first selection window), the second listening window is located after the first listening window, and the first selection The window is located behind the second listening window. Specifically, the first listening window is located before time n, and the second listening window is located after time n.
  • step 703 when step 703 is specifically implemented, it may include: determining the first resource in the first selection window according to the listening result in the second listening window.
  • the time interval between the second listening window and the first selection window is greater than or equal to the time required for processing the listening result and determining the first resource.
  • the start time of the second listening window is (n+t A ), and the end time is (n+t B ).
  • the second threshold may be the remaining PDB.
  • the start time of the first selection window is (n+t B + t D + t E ), and the end time is (n+t F ).
  • t F may be the above-mentioned t 2 .
  • the method is also include:
  • the active state of DRX is continued at least until the end of the second listening window.
  • the sending terminal may switch the active state of DRX to the inactive state of DRX again.
  • the sending terminal determines the second listening window and the first selection window, and selects resources in the first selection window, which can reduce the probability of resource conflicts and improve transmission reliability. As the probability of resource conflict decreases, the number of times the sending terminal selects resources decreases. Therefore, the method provided in the embodiments of the present application can also improve resource utilization.
  • Case (2) The overlapping portion of the first listening window and the first time period is greater than the first threshold, that is, within the first listening window, the time during which the sending terminal is in the active state is greater than the first threshold.
  • Case (2) can also be understood as: the total number of time slots in the receiving state of the transmitting terminal in the first listening window is greater than the preset number of time slots.
  • step 702 may include: determining the first in the selection window (denoted as the second selection window) according to the listening result in the overlapping portion of the first listening window and the first time period One resource, the second selection window is located after the first listening window. Specifically, the second selection window, which is [n+t 1 , n+t 2 ] above, is located after time n.
  • the first threshold may be denoted as Th ses_DRX .
  • Th ses_DRX may be predefined or preset or stipulated by the protocol, or configured by the access network device for the sending terminal, or may be determined in other ways, which is not limited in this application.
  • Th ses_DRX may be consistent with the unit used when defining the range of the listening window and the selection window.
  • Th ses_DRX may be an integer value in units of seconds, milliseconds, or time slots.
  • the first selection window is located in the second selection window.
  • the first selection window is a reduced selection window compared to the second selection window. Selecting resources within the scope of the original selection window can guarantee the delay requirement of the data packet.
  • the sending terminal may send data to the receiving terminal on the first resource.
  • the DRX activation time of the sending terminal is taken into consideration when resource selection is performed, so that the selection window is determined according to the DRX activation time of the sending terminal, which makes resource selection more reasonable, and reduces the resources and other resources used by the sending terminal.
  • the collision probability of the resources used by the terminal improves the transmission reliability.
  • the second listening window may be referred to as an extended sensing window.
  • the resources in the second selection window are candidate resources (Candidate Resources)
  • the resources in the first selection window are candidate resources.
  • the sending terminal can use existing methods for resource selection. If the sending terminal is configured with DRX mode, the sending terminal can use the method provided in this application for resource selection.
  • the DRX activation time may also only include the DRX duration.
  • the DRX activation time and the DRX duration are actually the same.
  • the first time period mentioned above may include The total DRX duration in the first listening window.
  • the process includes:
  • the sending terminal is triggered to select a resource at time n.
  • the sending terminal determines the first listening window.
  • the sending terminal determines whether the overlapping portion of the first listening window and the first time period is greater than a first threshold.
  • step 1104 executes step 1104 to step 1107, if yes, execute step 1108 to step 1110.
  • the sending terminal determines the second listening window and the first selection window.
  • the transmitting terminal switches the inactive state to the active state, or maintains the active state so that the transmitting terminal in the second listening window is in the active state.
  • the sending terminal determines available resources in the first selection window according to the listening result in the second listening window.
  • the sending terminal determines the first resource among the available resources in the first selection window.
  • the sending terminal determines the second selection window.
  • the sending terminal determines available resources in the second selection window according to the listening result in the first listening window.
  • the sending terminal determines the first resource among the available resources in the second selection window.
  • the sending terminal sends data to the receiving terminal on the first resource.
  • each listening window and each selection window may be defined in units of time slots, or may be defined in other time units, which is not limited in this application.
  • the method provided in the embodiments of the present application can be applied in a scenario where two terminals are directly connected to communicate, and can also be applied in a terminal relay (relay) scenario (that is, through a certain terminal/some terminal, it can be used for other terminals.
  • a terminal relay (relay) scenario that is, through a certain terminal/some terminal, it can be used for other terminals.
  • this application does not limit it.
  • each network element for example, a communication device, includes at least one of a hardware structure and a software module corresponding to each function.
  • each network element for example, a communication device
  • each network element includes at least one of a hardware structure and a software module corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiment of the present application may divide the communication device into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 12 shows a schematic diagram of a possible structure of the communication device (denoted as the communication device 120) involved in the foregoing embodiment.
  • the communication device 120 includes a processing unit 1201 and a transceiver unit 1202.
  • a storage unit 1203 is further included.
  • the communication device 120 may be used to illustrate the structure of the sending terminal in the foregoing embodiment.
  • the processing unit 1201 is used to control and manage the actions of the sending terminal.
  • the processing unit 1201 is used to execute the steps in FIG. 7, the steps in FIG. 11, and/or other processes described in the embodiments of the present application.
  • the processing unit 1201 may communicate with other network entities through the transceiver unit 1202, for example, communicate with a receiving terminal.
  • the storage unit 1203 is used to store the program code and data of the sending terminal.
  • the communication device 120 may be a terminal, a chip or a chip system.
  • the processing unit 1201 may be a processor; the transceiving unit 1202 may be a communication interface, a transceiver, or an input interface and/or an output interface.
  • the transceiver may be a transceiver circuit.
  • the input interface may be an input circuit, and the output interface may be an output circuit.
  • the transceiver unit 1202 may be a communication interface, an input interface and/or an output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip or the chip system.
  • the processing unit 1201 may be a processor, a processing circuit, a logic circuit, or the like.
  • the communication device in the embodiment of the present application includes a processor and a transceiver to implement corresponding functions of the communication device in the method provided in the foregoing embodiment.
  • the processor is configured to determine the first listening window, determine the selection window according to the first listening window and the first time period, and determine the first resource in the selection window; wherein the first time period includes part or all of the DRX activation time ; Transceiver, used to send data on the first resource.
  • the overlapping portion of the first listening window and the first time period is less than or equal to a first threshold
  • the processor is specifically configured to determine the second listening window and the selection window, where the second listening window is located in the first After the listening window, the selection window is located after the second listening window.
  • the processor is specifically configured to: determine the first resource in the selection window according to the listening result in the second listening window.
  • the processor is further configured to switch to the active state of DRX and continue the active state of DRX at least until the second listening window when the state at the start time of the second listening window is the inactive state of DRX End; or, the processor is further configured to, when the state at the start time of the second listening window is the active state of DRX, continue the active state of DRX at least until the end of the second listening window.
  • the time interval between the second listening window and the selection window is greater than or equal to the time required for processing the listening result and determining the first resource.
  • the first listening window is determined by the processor at time n, the start moment of the second listening window is (n+t A ), the end moment is (n+t B ), and t A is greater than or equal to certain The time required for the first listening window, the second listening window, and the selection window, 0 ⁇ t A ⁇ t B.
  • the start time of the selection window is (n+t B + t D + t E ), the end time is (n+t F ), t D is greater than or equal to the time required to process the listening result, t D ⁇ 0, t E is greater than or equal to the time required to determine the first resource, t E ⁇ 0, t B + t D + t E ⁇ t F ⁇ the second threshold.
  • the overlapping part of the first listening window and the first time period is greater than a first threshold
  • the processor is specifically configured to select the part according to the listening result in the overlapping part of the first listening window and the first time period.
  • the first resource is determined in the window, and the selection window is located behind the first listening window.
  • the first time period is all DRX activation times in the first listening window; or, the first time period is the DRX duration in the first listening window.
  • the integrated unit in FIG. 12 is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the medium includes several instructions to enable a computer device (which may be a personal computer, a server, or an access network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • Storage media for storing computer software products 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, etc., which can store program codes Medium.
  • the embodiment of the present application also provides a schematic diagram of the hardware structure of a communication device.
  • the communication device includes a processor 1301, and optionally, a memory 1302 connected to the processor 1301.
  • the processor 1301 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs used to control the execution of the program of this application. integrated circuit.
  • the processor 1301 may also include multiple CPUs, and the processor 1301 may be a single-CPU processor or a multi-CPU processor.
  • the processor here may refer to one or more devices, circuits, or processing cores for processing data (for example, computer program instructions).
  • the memory 1302 may be ROM or other types of static storage devices that can store static information and instructions, RAM, or other types of dynamic storage devices that can store information and instructions, or it can be an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory).
  • read-only memory EEPROM
  • compact disc read-only memory, CD-ROM
  • optical disc storage including compact discs, laser discs, optical discs, digital universal discs, Blu-ray discs, etc.
  • magnetic disks A storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, and the embodiment of the present application does not impose any limitation on this.
  • the memory 1302 may exist independently (at this time, the processor may be located outside the communication device or in the communication device), or may be integrated with the processor 1301. Wherein, the memory 1302 may contain computer program code.
  • the processor 1301 is configured to execute the computer program code stored in the memory 1302, so as to implement the method provided in the embodiment of the present application.
  • the communication device further includes a transceiver 1303.
  • the processor 1301, the memory 1302, and the transceiver 1303 are connected by a bus.
  • the transceiver 1303 is used to communicate with other devices or a communication network.
  • the transceiver 1303 may include a transmitter and a receiver.
  • the device used for implementing the receiving function in the transceiver 1303 can be regarded as a receiver, and the receiver is used to perform the receiving steps in the embodiment of the present application.
  • the device used in the transceiver 1303 to implement the sending function can be regarded as a transmitter, and the transmitter is used to perform the sending steps in the embodiment of the present application.
  • the schematic structural diagram shown in FIG. 13 may be used to illustrate the structure of the sending terminal involved in the foregoing embodiment.
  • the processor 1301 is configured to control and manage the actions of the sending terminal.
  • the processor 1301 is configured to execute the steps in FIG. 7, the steps in FIG. 11, and/or other processes described in the embodiments of the present application.
  • the processor 1301 may communicate with other network entities through the transceiver 1303, for example, communicate with a receiving terminal.
  • the memory 1302 is used to store the program code and data of the sending terminal.
  • the processor 1301 includes a logic circuit and at least one of an input interface and an output interface.
  • the output interface is used to execute the sending action in the corresponding method
  • the input interface is used to execute the receiving action in the corresponding method.
  • FIG. 14 The schematic structural diagram shown in FIG. 14 may be used to illustrate the structure of the sending terminal involved in the foregoing embodiment.
  • the processor 1301 is configured to control and manage the actions of the sending terminal.
  • the processor 1301 is configured to execute the steps in FIG. 7, the steps in FIG. 11, and/or other processes described in the embodiments of the present application.
  • the processor 1301 may communicate with other network entities through at least one of an input interface and an output interface, for example, communicate with a receiving terminal.
  • the memory 1302 is used to store the program code and data of the sending terminal.
  • each step in the method provided in this embodiment can be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the embodiment of the present application also provides a schematic diagram of the hardware structure of a sending terminal (denoted as the sending terminal 150). For details, refer to FIG. 15 respectively.
  • FIG. 15 is a schematic diagram of the hardware structure of the sending terminal 150. For ease of description, FIG. 15 only shows the main components of the transmitting terminal. As shown in FIG. 15, the transmitting terminal 150 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the entire sending terminal, execute the software program, and process the data of the software program. For example, it is used to control the sending terminal to execute the steps in Figure 7 and the steps in Figure 11. Steps, and some or all of the actions performed by the sending terminal in other processes described in the embodiments of this application.
  • the memory is mainly used to store software programs and data.
  • the control circuit also referred to as a radio frequency circuit
  • the control circuit and the antenna together can also be called a transceiver, which 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.
  • the processor can read the software program in the memory, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the control circuit in the control circuit.
  • the control circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. send.
  • the control 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. 15 only shows a memory and a processor. In an actual terminal, 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.
  • the processor may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data.
  • the central processing unit is mainly used to control the entire sending terminal and execute Software program, processing the data of the software program.
  • the processor in FIG. 15 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors and are interconnected by technologies such as a bus.
  • the transmitting terminal may include multiple baseband processors to adapt to different network standards, the transmitting terminal may include multiple central processors to enhance its processing capabilities, and the various components of the transmitting terminal may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and the communication data can be built in the processor, or can be stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the embodiment of the present application also provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute any of the above-mentioned methods.
  • the embodiments of the present application also provide a computer program product containing instructions, which when run on a computer, cause the computer to execute any of the above-mentioned methods.
  • An embodiment of the present application also provides a communication system, including: a receiving terminal and the sending terminal in the foregoing embodiment.
  • a communication system including: a receiving terminal and the sending terminal in the foregoing embodiment.
  • it also includes access network equipment.
  • An embodiment of the present application also provides a communication device, including: a processor and an interface circuit, the interface circuit is used to receive and transmit code instructions to the processor, and the processor is used to run the code instructions to execute any one of the above-mentioned embodiments.
  • a communication device including: a processor and an interface circuit, the interface circuit is used to receive and transmit code instructions to the processor, and the processor is used to run the code instructions to execute any one of the above-mentioned embodiments.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • a software program it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • Computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • computer instructions may be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL) or wireless (such as infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or may include one or more data storage devices such as a server or a data center that can be integrated with the medium.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state drive (SSD)).

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Abstract

本申请提供了一种数据传输方法及装置，可以应用于车联网、V2X、V2V等系统中。该方法中，确定第一侦听窗，根据第一侦听窗和第一时间段确定选择窗，在选择窗内确定第一资源，在第一资源上发送数据。其中，第一时间段包括部分或全部DRX激活时间，通过在进行资源选择时，考虑到了发送终端的DRX激活时间，从而根据发送终端的DRX激活时间确定选择窗，更加合理的进行资源选择，降低发送终端使用的资源和其他终端使用的资源的碰撞概率，提高传输可靠性。

Description

数据传输方法及装置 技术领域
本申请涉及通信技术领域，尤其涉及一种数据传输方法及装置。
背景技术
随着无线通信技术的发展，人们对用户体验和高数据速率的需求日益增长。同时，人们对了解周边人或事物并与之通信的邻近服务的需求逐渐增加，因此设备到设备(device-to-device，D2D)技术应运而生。D2D技术的应用，可以减轻蜂窝网络的负担、减少终端的功耗、提高数据速率，并能很好地满足邻近服务的需求。D2D技术允许多个支持D2D功能的终端在有网络基础设施或无网络基础设施的情况下进行直接发现和直接通信。
在D2D场景中，发送终端可以自己选择发送数据的时频资源。例如，发送终端被触发在n时刻进行资源选择，发送终端可以根据在n时刻之前的侦听窗(sensing window)内的侦听结果，在n时刻之后的选择窗(selection window)上进行资源选择。具体的，参见图1，发送终端根据侦听窗内的侦听结果确定选择窗上其他终端使用的时频资源，并将选择窗中的除其他终端使用的时频资源之外的时频资源确定为可以发送数据的时频资源，从而防止不同的终端之间发生资源冲突。
这种侦听和资源选择机制是发送终端在正常状态下工作的情况下设计的，如果发送终端在非连续接收(discontinuous reception，DRX)模式下工作，发送终端在DRX激活时间可以接收侧行链路的控制信息和数据信息，在DRX非激活时间不接收侧行链路的控制信息和/或数据信息。现有技术并未考虑到这种情况，导致发送终端选择的资源和其他终端选择的资源的碰撞概率增大，进而导致整个系统的传输可靠性降低。
发明内容
本申请实施例提供了一种数据传输方法及装置，可以应用于车联网，例如，车到一切(vehicle to everything，V2X)通信、车间通信长期演进技术(long term evolution-vehicle，LTE-V)、车辆与车辆(vehicle to vehicle，V2V)通信等，或可以用于智能驾驶，智能网联车等领域，用于实现发送终端在DRX模式下工作的情况下的自主资源选择，降低了发送终端使用的资源和其他终端使用的资源的碰撞概率，提高了传输可靠性。
为达到上述目的，本申请实施例提供如下技术方案：
第一方面，提供了一种数据传输方法，包括：确定第一侦听窗，根据第一侦听窗和第一时间段确定选择窗，在选择窗内确定第一资源，在第一资源上发送数据。其中，第一时间段包括部分或全部DRX激活时间。第一方面提供的方法，在进行资源选择时，考虑到了发送终端的DRX激活时间，从而根据发送终端的DRX激活时间确定选择窗，更加合理的进行资源选择，降低发送终端使用的资源和其他终端使用的资源的碰撞概率，提高传输可靠性。
在一种可能的实现方式中，根据第一侦听窗和第一时间段确定选择窗，包括：第一侦听窗和第一时间段重叠的部分小于或等于第一阈值，确定第二侦听窗和选择窗， 其中，第二侦听窗位于第一侦听窗之后，选择窗位于第二侦听窗之后。第一侦听窗和第一时间段重叠的部分小于或等于第一阈值，发送终端无法获得足够的侦听信息，以导致侦听结果不能完整地反映出信道使用状况，因此，只能在现有的选择窗随机选择资源或依据不足够的侦听信息确定不完整的侦听结果，导致选择的资源和其他终端选择的资源的碰撞概率增大，进而导致整个系统的传输可靠性降低。该种可能的实现方式，发送终端通过确定第二侦听窗和选择窗，并在选择窗中进行资源选择，可以降低资源冲突概率，提升传输可靠性。随着资源冲突概率的降低，发送终端选择资源的次数变少，因此，还可以提高资源利用率。
在一种可能的实现方式中，在选择窗内确定第一资源，包括：根据在第二侦听窗内的侦听结果在选择窗内确定第一资源。该种可能的实现方式，可以在第二侦听窗内侦听到足够多的侦听结果，从而合理的进行资源选择。
在一种可能的实现方式中，该方法还包括：若在第二侦听窗的起始时刻的状态为DRX的非激活状态，切换为DRX的激活状态并将DRX的激活状态至少持续至第二侦听窗结束；或者，若在第二侦听窗的起始时刻的状态为DRX的激活状态，将DRX的激活状态至少持续至第二侦听窗结束。该种可能的实现方式，可以保证在第二侦听窗处于激活状态，以便在第二侦听窗进行侦听。
在一种可能的实现方式中，第二侦听窗和选择窗之间的时间间隔大于或等于处理侦听结果和确定第一资源所需的时间。该种可能的实现方式，可以保证在选择窗之前即可完成资源选择。
在一种可能的实现方式中，第一侦听窗在时刻n被确定，第二侦听窗的起始时刻为(n+t A)，结束时刻为(n+t B)，t A大于或等于确定第一侦听窗、第二侦听窗和选择窗所需的时间，0≤t A＜t B。该种可能的实现方式，提供了第二侦听窗的一种可能的范围。
在一种可能的实现方式中，选择窗的起始时刻为(n+t B+t D+t E)，结束时刻为(n+t F)，t D大于或等于处理侦听结果所需的时间，t D≥0，t E大于或等于确定第一资源所需的时间，t E≥0，t B+t D+t E＜t F≤第二阈值。该种可能的实现方式，提供了选择窗的一种可能的范围。
在一种可能的实现方式中，根据第一侦听窗和第一时间段确定选择窗，在选择窗内确定第一资源，包括：第一侦听窗和第一时间段重叠的部分大于第一阈值，根据在第一侦听窗和第一时间段重叠的部分内的侦听结果在选择窗内确定第一资源，选择窗位于第一侦听窗之后。第一侦听窗和第一时间段重叠的部分大于第一阈值，发送终端可以获得足够多的侦听结果，因此，可以采用现有的方法进行资源选择。
在一种可能的实现方式中，第一时间段为第一侦听窗中的全部的DRX激活时间；或者，第一时间段为第一侦听窗中的DRX持续时间。该种可能的实现方式，提供了第一时间段的两种可能的情况。
第二方面，提供了一种通信装置，该装置包括处理单元和收发单元；处理单元，用于确定第一侦听窗，根据第一侦听窗和第一时间段确定选择窗，在选择窗内确定第一资源；其中，第一时间段包括部分或全部DRX激活时间；收发单元，用于在第一资源上发送数据。
在一种可能的实现方式中，第一侦听窗和第一时间段重叠的部分小于或等于第一 阈值，处理单元，具体用于确定第二侦听窗和选择窗，其中，第二侦听窗位于第一侦听窗之后，选择窗位于第二侦听窗之后。
在一种可能的实现方式中，处理单元，具体用于：根据在第二侦听窗内的侦听结果在选择窗内确定第一资源。
在一种可能的实现方式中，处理单元，还用于在第二侦听窗的起始时刻的状态为DRX的非激活状态时，切换为DRX的激活状态并将DRX的激活状态至少持续至第二侦听窗结束；或者，处理单元，还用于在第二侦听窗的起始时刻的状态为DRX的激活状态时，将DRX的激活状态至少持续至第二侦听窗结束。
在一种可能的实现方式中，第二侦听窗和选择窗之间的时间间隔大于或等于处理侦听结果和确定第一资源所需的时间。
在一种可能的实现方式中，第一侦听窗在时刻n被处理单元确定，第二侦听窗的起始时刻为(n+t A)，结束时刻为(n+t B)，t A大于或等于确定第一侦听窗、第二侦听窗和选择窗所需的时间，0≤t A＜t B。
在一种可能的实现方式中，选择窗的起始时刻为(n+t B+t D+t E)，结束时刻为(n+t F)，t D大于或等于处理侦听结果所需的时间，t D≥0，t E大于或等于确定第一资源所需的时间，t E≥0，t B+t D+t E＜t F≤第二阈值。
在一种可能的实现方式中，第一侦听窗和第一时间段重叠的部分大于第一阈值，处理单元，具体用于根据在第一侦听窗和第一时间段重叠的部分内的侦听结果在选择窗内确定第一资源，选择窗位于第一侦听窗之后。
在一种可能的实现方式中，第一时间段为第一侦听窗中的全部的DRX激活时间；或者，第一时间段为第一侦听窗中的DRX持续时间。
第三方面，提供了一种通信装置，包括：处理器。此处理器与存储器连接，存储器可以集成或者设置于所述通信装置内，也可以设置于所述通信装置之外，存储器用于存储计算机执行指令，处理器执行存储器存储的计算机执行指令，从而实现第一方面提供的任意一种方法。示例性的，存储器和处理器可以集成在一起，也可以为独立的器件。
在一种可能的实现方式中，处理器包括逻辑电路，还包括输入接口和输出接口中的至少一个。示例性的，输出接口用于执行相应方法中的发送的动作，输入接口用于执行相应方法中的接收的动作。
在一种可能的实现方式中，通信装置还包括通信接口和通信总线，处理器、存储器和通信接口通过通信总线连接。通信接口用于执行相应方法中的收发的动作。通信接口也可以称为收发器。可选的，通信接口包括发送器和接收器中的至少一种，该情况下，发送器用于执行相应方法中的发送的动作，接收器用于执行相应方法中的接收的动作。
在一种可能的实现方式中，通信装置可以为芯片或片上系统。
第四方面，提供了一种通信装置，该通信装置包括：处理器和接口电路；接口电路，用于接收代码指令并传输至处理器；处理器，用于运行代码指令以执行第一方面提供的任意一种方法。
第五方面，提供了一种终端，该终端可以执行第一方面提供的任意一种方法。
第六方面，提供了一种通信系统，包括：发送终端和接收终端，发送终端用于执 行上述第一方面提供的任意一种方法。
第七方面，提供了一种通信系统，包括：接入网设备、发送终端和至少一个接收终端，其中，发送终端用于执行上述第一方面提供的任意一种方法。
第八方面，提供了一种可读存储介质，用于存储指令，当所述指令被执行时，使第一方面提供的任意一种方法被实现。
第九方面，提供了一种计算机可读存储介质，用于存储计算机程序，所述计算机程序可被处理器执行以实现第一方面提供的任意一种方法。
第十方面，提供了一种计算机程序产品，包含指令，当该指令在计算机上运行时，使得计算机执行第一方面提供的任意一种方法。
第十一方面，提供了一种计算机程序，当该计算机程序被运行时，使得第一方面提供的任意一种方法被执行。
第二方面至第十一方面中的任一种实现方式所带来的技术效果可参见第一方面中对应实现方式所带来的技术效果，此处不再赘述。
需要说明的是，在方案不矛盾的前提下，上述各个方面中的方案均可以结合。
附图说明
图1为本申请实施例提供的一种侦听窗和选择窗的示意图；
图2为本申请实施例提供的一种终端之间通信的示意图；
图3为本申请实施例提供的一种终端的位置与接入网设备的覆盖范围的示意图；
图4为本申请实施例提供的V2X通信的示意图；
图5为本申请实施例提供的又一种侦听窗和选择窗的示意图；
图6为本申请实施例提供的一种DRX激活时间的示意图；
图7为本申请实施例提供的一种数据传输方法的流程图；
图8为本申请实施例提供的一种第一侦听窗的示意图；
图9为本申请实施例提供的又一种第一侦听窗的示意图；
图10为本申请实施例提供的一种第二侦听窗和第一选择窗的示意图；
图11为本申请实施例提供的又一种数据传输方法的流程图；
图12为本申请实施例提供的一种通信装置的示意图；
图13为本申请实施例提供的一种通信装置的硬件结构示意图；
图14为本申请实施例提供的又一种通信装置的硬件结构示意图；
图15为本申请实施例提供的一种发送终端的硬件结构示意图。
具体实施方式
在本申请的描述中，除非另有说明，“/”表示“或”的意思，例如，A/B可以表示A或B。本文中的“和/或”仅仅是一种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这三种情况。此外，“至少一个”是指一个或多个，“多个”是指两个或两个以上。“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
需要说明的是，本申请中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具 体方式呈现相关概念。
本申请实施例提供的方法适用的通信系统包括但不限于第五代(5th-generation，5G)系统、新空口(new radio，NR)系统，无线局域网(wireless local area networks，WLAN)系统以及未来演进系统或者多种通信融合系统。其中，5G系统可以为非独立组网(non-standalone，NSA)的5G系统或独立组网(standalone，SA)的5G系统。
参见图2，本申请实施例提供的方法主要涉及终端和终端之间的通信。本申请实施例中的通信的两个终端可以均在接入网设备的覆盖区域内(参见图3中的(a))，也可以一个在接入网设备的覆盖区域内，另一个不在接入网设备的覆盖区域内(参见图3中的(b))，还可以均不在接入网设备的覆盖区域内(参见图3中的(c))。
其中，终端与终端之间进行直连通信的通信链路可以称之为侧行链路(sidelink，SL)或者边链路。发送终端可以在一个时间单元内向接收终端发送侧行链路控制信息(sidelink control information，SCI)和侧行数据，SCI用于调度侧行数据。接收终端可以通过接收SCI确定发送终端发送侧行数据的位置，并在相应的位置上接收侧行数据。在侧行链路上，发送终端可以直接发送数据给接收终端，而不需要先把数据发送给接入网设备，再通过核心网的转发，再发给接收终端，可以大大减少数据的传输时延。
本申请实施例中的时间单元为时域资源中的资源单位。本申请实施例中的时间单元为多个连续的正交频分复用(orthogonal frequency division multiplexing，OFDM)符号的集合。例如，时间单元可以为迷你时隙(minislot)、时隙(slot)、子帧(subframe)、传输时间间隔(transmission time interval，TTI)等。
在NR系统中，对于常规(normal)循环前缀(cyclic prefix，CP)，1个时隙包含14个OFDM符号。对于扩展(extended)CP，1个时隙包含12个OFDM符号。其中，用于D2D或V2X通信的SL时域资源，可以是1个时隙内的若干个连续符号，例如，使用一个时隙内的8个符号用于SL发送和SL接收，一个时隙中的用于SL发送和SL接收的符号可以由接入网设备配置或用户预先配置。
时间单元也可以称为时域单元，时域粒度等。为了方便理解，本申请下文的部分描述中以时间单元为时隙为例，对本申请实施例提供的方法作示例性说明。可以理解的是，下文中的时隙均可以替换为时间单元，并不局限于时隙。
本申请实施例提供的方法可适用但不限于如下领域：V2X、无人驾驶(unmanned driving)、自动驾驶(automated driving，ADS)、辅助驾驶(driver assistance，ADAS)、智能驾驶(intelligent driving)、网联驾驶(connected driving)、智能网联驾驶(intelligent network driving)、汽车共享(car sharing)等。
其中，V2X是指车与任何事物之间的通信。车联网一般是指通过装载在车上的传感器、车载终端等提供车辆信息，实现车辆到车辆(vehicle to vehicle，V2V)，车辆到基础设施(vehicle to infrastructure，V2I)，车辆到网络(vehicle to network，V2N)以及车辆到行人(vehicle to pedestrian，V2P)之间的相互通信的通信网络。V2X通信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。车辆用户(Vehicle UE，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。
示例性的，图4中的(a)示出了一种V2V通信的示例，图4中的(b)示出了一种V2P通信的示例，图4中的(c)示出了一种V2I/V2N通信的示例。
本申请实施例中涉及的接入网设备为网络侧的一种用于发送信号，或者，接收信号，或者，发送信号和接收信号的实体。接入网设备可以为部署在无线接入网(radio access network，RAN)中为终端提供无线通信功能的装置，例如可以为传输接收点(transmission reception point，TRP)、基站、各种形式的控制节点(例如，网络控制器、无线控制器(例如，云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器))等。具体的，在传统通用移动通信系统(universal mobile telecommunications system，UMTS)或LTE系统中可以是传统宏基站(evolved node B，eNB)，在异构网络(Heterogeneous Network,HetNet)场景下可以是微基站eNB，在分布式基站场景可以是基带单元(base band unit，BBU)和射频拉远单元(remote radio unit,RRU)，在CRAN场景下可以是基带池(BBU pool)和RRU，在5G系统或NR系统中可以为下一代基站节点(next generation node base station，gNB)。控制节点可以连接多个基站，并为所述多个基站覆盖下的多个终端配置资源。接入网设备还可以是未来演进的公共陆地移动网络(public land mobile network，PLMN)中的接入网设备等。
本申请实施例中涉及的终端是用户侧的一种用于接收信号，或者，发送信号，或者，接收信号和发送信号的实体。终端用于向用户提供语音服务和数据连通性服务中的一种或多种。终端还可以称为用户设备(user equipment，UE)、终端设备、接入终端、用户单元、用户站、移动站、远方站、远程终端、移动设备、用户终端、无线通信设备、用户代理或用户装置。终端可以是V2X设备，例如，智能汽车(smart car或intelligent car)、数字汽车(digital car)、无人汽车(unmanned car或driverless car或pilotless car或automobile)、自动汽车(self-driving car或autonomous car)、纯电动汽车(pure EV或Battery EV)、混合动力汽车(hybrid electric vehicle，HEV)、增程式电动汽车(range extended EV，REEV)、插电式混合动力汽车(plug-in HEV，PHEV)、新能源汽车(new energy vehicle)、路边装置(road site unit，RSU)、车载通信模块或其它嵌入式通信模块。终端也可以是D2D设备，例如，电表、水表等。终端还可以是移动站(mobile station，MS)、用户单元(subscriber unit)、无人机、物联网(internet of things，IoT)设备、WLAN中的站点(station，ST)、蜂窝电话(cellular phone)、智能电话(smart phone)、无绳电话、无线数据卡、平板型电脑、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)设备、膝上型电脑(laptop computer)、机器类型通信(machine type communication，MTC)终端、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(也可以称为穿戴式智能设备)。终端还可以为下一代通信系统中的终端，例如，5G系统中的终端或者未来演进的PLMN中的终端，NR系统中的终端等。
为了使得本申请实施例更加的清楚，以下对与本申请实施例相关的概念和部分内容作简单介绍。
1、现有的发送终端的资源分配模式。
发送终端的资源分配存在两种模式，一种为接入网设备分配资源模式，即模式1(mode-1)，一种为发送终端自选资源模式，即模式2(mode-2)。
mode-1主要应用于发送终端处于接入网设备的覆盖区域的情况下的D2D通信或V2X通信，由接入网设备为发送终端进行资源分配。
mode-2不受限于网络覆盖，在发送终端不处于接入网设备的覆盖区域的情况下，发送终端也可以与接收终端进行D2D通信或V2X通信。发送终端的资源分配不依赖接入网设备。
本申请实施例提到的资源包括时域资源和/或频域资源。
2、物理侧行链路控制信道(physical sidelink control channel，PSCCH)、物理侧行链路共享信道(physical sidelink shared channel，PSSCH)
PSCCH、PSSCH均为终端之间的物理信道。其中，PSCCH主要用于承载侧行链路数据的控制信息。PSSCH主要用于承载侧行链路数据，也可以承载控制信息。例如，SCI可以包括两级，第一级SCI(1st-stage SCI)，可以携带在PSCCH中。第二级SCI(2nd-stage SCI)比特比较灵活，由第一级SCI指示其格式(包括不同的信息字段)、大小、码率、资源的其中至少一种信息，可以携带在PSSCH中。
3、在发送终端的资源分配模式为mode-2的情况下，现有的发送终端的资源选择机制。
参见图5，若发送终端被触发在时隙n进行资源选择，发送终端在侦听窗内获取侦听结果，根据在侦听窗内的侦听结果，在选择窗内排除不可用时频资源，得到该选择窗内可用的时频资源，再从这些可用的时频资源中确定时频资源用于发送数据。
假设侦听窗和选择窗的范围均以时隙为单位进行定义，则侦听窗的范围为[n-t 0，n-t proc，0]。其中，t 0用于确定侦听窗的边界值(即n-t 0)。t 0与子载波间隔有关。示例性的，在15kHz子载波间隔的情况下，t 0为1100个时隙或100个时隙。在60kHz子载波间隔的情况下，t 0为4400个时隙或400个时隙。t proc，0为发送终端处理侦听结果所需的时间，t proc，0≥0，根据发送终端能力的不同t proc，0取值不同。
选择窗的范围为[n+t 1，n+t 2]。其中，0≤t 1≤t proc，1，t proc，1是发送终端处理待发送数据所需的时间，根据发送终端能力的不同t proc，1取值不同。t 2_min＜t 2≤剩余包延迟预算(packet delay budget，PDB)。PDB为一个数据包从业务层产生到成功发送所需的最大的延时时间。PDB可以是以时隙、子帧或帧等为单位的计量待发送数据时延的数值，也可以是以毫秒(ms)或秒(s)等为单位的计量待发送数据时延的数值。可以理解的是，在时隙n，剩余PDB则为数据包从业务层产生到时隙n时所剩余的延时时间。例如，在时隙n，若剩余PDB为20ms，一个时隙为0.5ms，则在时隙n+1，剩余PDB为19.5ms，在时隙n+2，剩余PDB为19ms。
发送终端具体进行资源选择的过程包括：
1)发送终端在侦听窗[n-t 0，n-t proc，0]内的资源池内接收来自其他终端的SCI，SCI包含其他终端的侦听信息。进一步地，所述SCI为第一级SCI(1st-stage SCI)，在物理侧行链路控制信道(physical sidelink control channel，PSCCH)上发送。
其中，一个SCI可以调度至少一次传输，例如3次传输。例如，这3次传输中第一次传输是一个数据的初传，后两次传输是该数据的重传，或者这3次传输都是某一个数据的重传。所述SCI包括的侦听信息包含第二次和第三次的重传的调度数据的时频资源信息、体现数据业务周期的周期性时频资源信息和数据优先级信息(priority of PSSCH)等。可以理解的，在给定的一个时刻，一个终端通过发送一个SCI来预约在 该时刻之后的时频资源用于一个数据的重传和/或另一个新的周期性的数据的传输。
2)如果发送终端从接收到的来自终端1的SCI的侦听信息中得知，终端1预约的时频资源位于发送终端的选择窗[n+t 1，n+t 2]内，则发送终端根据该侦听信息，对终端1需要在该时频资源上发送的数据或控制信道的解调参考信号(demodulation reference signal，DMRS)进行测量，得到参考信号接收功率(reference signal received power，RSRP)。如果该RSRP大于预先设定的或者接入网设备配置的RSRP门限Th RSRP，则发送终端从选择窗中排除该时频资源。
3)发送终端在排除选择窗内的不可用的时频资源后，可以确定选择窗内剩余的时频资源为可用的时频资源，从而在可用的时频资源中选择时频资源以发送数据。一种实现的方式是，在可用的时频资源中随机选择一个时频资源用于发送数据。
在现有机制中，发送终端在发送数据时所使用的时频资源，是基于发送终端在侦听窗[n-t 0，n-t proc，0]内的侦听结果(即确定的可用的资源)来选择的。本申请实施例提供的技术方案中，除特殊说明，侦听结果是指通过上述1)、2)和3)这3个步骤来确定的结果。
4、侧行链路的DRX模式
由于基于包的数据流通常是突然性的或者周期性数据的传输周期较长，即在一段时间内有数据传输，但在接下来的一段较长时间内可能没有数据传输。在没有数据传输的时候，可以通过关闭终端的接收机(或者称为接收电路)来降低功耗，从而提升移动电池的使用时间。因此，DRX模式被提出，用于降低终端的功耗。
在侧行链路上，DRX模式是指终端仅在必要的时间段打开接收机接收侧行链路信息，而在剩余时间段关闭接收机不接收侧行链路信息的一种节省终端功耗的工作模式。其中，可接收侧行链路信息的时间段称为DRX激活时间(DRX active time)(也可以称为唤醒时间)，可接收侧行链路信息的状态可以称为激活状态(也可以称为唤醒状态)。不接收侧行链路信息的时间段称为DRX非激活时间(DRX inactive time)(也可以称为睡眠时间)，不接收侧行链路信息的状态可以称为非激活状态(也可以称为睡眠状态)。在激活状态，终端可以接收侧行链路的控制信息和数据信息，在非激活状态，终端不接收侧行链路的控制信息和/或数据信息。其中，终端可以被其他终端或接入网设备配置成侧行链路的DRX模式。
在连接态DRX模式下，终端不能一直关闭接收机，必须周期性打开接收机，并开始在之后一段时间内持续接收侧行链路信息，这段时间称为DRX持续时间(DRX On Duration)，由DRX持续时间定时器(DRX On Duration Timer)控制，该定时器的时长可通过参数设置。其中，参见图6，两次DRX持续时间出现的间隔时长即DRX模式的DRX周期(DRX Cycle)。
参见图6，终端被配置若干个连续的DRX周期。一个DRX周期包括多个DRX激活时间段，其中一个DRX激活时间段为DRX持续时间，其余DRX激活时间段可以配置。所述多个DRX激活时间段组成DRX激活时间，所述多个DRX激活时间段可以连续也可以不连续，图6中以不连续为例进行绘制。
需要说明的是，本申请实施例中的与DRX有关的信息(例如，DRX激活时间、DRX周期、DRX持续时间、DRX非激活时间等)均指侧行链路的信息。
为了解决背景技术中提出的问题，本申请实施例提供了一种数据传输方法，该方法中，发送终端的资源分配模式为mode-2，即发送终端自主选择资源，并根据选择的 资源向接收终端发送侧行数据，如图7所示，该方法包括：
701、确定第一侦听窗。
其中，步骤701的执行主体可以为通信装置，例如，发送终端，发送终端内的芯片，发送终端内的片上系统等。下文中以通信装置为发送终端为例对本申请提供的方法作示例性说明，但本发明并不局限于此。
发送终端采用DRX模式与接收终端通信。本申请实施例中的与DRX模式相关的信息均指与发送终端的DRX模式相关的信息。例如，下文中的DRX激活时间、DRX持续时间均指发送终端的DRX激活时间、DRX持续时间等。
发送终端可以在时刻n确定第一侦听窗。时刻n可以为时间单元n，示例性的，具体可以为时隙n，子帧n，符号n等。
步骤701在具体实现时，若发送终端的物理(physical，PHY)层在时刻n被媒介接入控制(medium access control，MAC)触发根据侦听结果去做资源选择，则发送终端在时刻n确定进行资源选择，进而在时刻n确定第一侦听窗。其中，MAC层可以在有数据需要发送时触发PHY层进行资源选择。
其中，第一侦听窗即上文中的[n-t 0，n-t proc，0]。
702、根据第一侦听窗和第一时间段确定选择窗，在选择窗内确定第一资源。
其中，第一时间段包括部分或全部DRX激活时间。步骤702在具体实现中，发送终端根据第一侦听窗和第一时间段确定选择窗，在选择窗内确定可用的资源(具体过程可参见上文，不再赘述)，在可用的资源中确定第一资源，例如，在可用的时频资源中随机选择一个时频资源作为第一资源。
可选的，第一时间段有以下三种情况(记为情况1至情况3)。
情况1、第一时间段为第一侦听窗中的全部的DRX激活时间。
在情况1下，发送终端可以根据DRX配置确定第一侦听窗中的全部的DRX激活时间，进而确定第一时间段。
在情况1下，示例性的，参见图8中的(a)，若第一侦听窗为第一侦听窗1，则第一时间段包括：T1、T2和T3；若第一侦听窗为第一侦听窗2，则第一时间段包括：T3、T4和T5。示例性的，参见图8中的(b)，若第一侦听窗为第一侦听窗1，则第一时间段包括：T1、T2和T3；若第一侦听窗为第一侦听窗2，则第一时间段包括：T1、T2、T3、T4和T5。
情况2、第一时间段为第一侦听窗中的DRX持续时间。
根据上文可知，DRX持续时间为全部的DRX激活时间的一部分。也就是说，部分DRX激活时间为DRX持续时间。
在情况2下，发送终端可以根据DRX配置确定第一侦听窗中的全部的DRX持续时间，进而确定第一时间段。
在情况2下，示例性的，参见图8中的(a)，若第一侦听窗为第一侦听窗1，则第一时间段包括：T1；若第一侦听窗为第一侦听窗2，则第一时间段包括：T4。示例性的，参见图8中的(b)，若第一侦听窗为第一侦听窗1，则第一时间段包括：T1；若第一侦听窗为第一侦听窗2，则第一时间段包括：T1和T4。
情况3、第一时间段为第一侦听窗中的部分DRX激活时间，部分DRX激活时间 至少包括DRX持续时间。
在情况3下，哪些DRX激活时间属于第一时间段可以为预设的，也可以为接入网设备为发送终端配置的，还可以是协议规定的，本申请不作限制。
在情况3下，示例性的，参见图9，若第一侦听窗为第一侦听窗1，则第一时间段可以包括：T1和T2；若第一侦听窗为第一侦听窗2，则第一时间段可以包括：T1、T2和T4。
除了上述情况1至情况3之外，第一时间段也可以为其他DRX激活时间，例如，不包括DRX持续时间的DRX激活时间，本申请不作限制。
第一侦听窗和第一时间段重叠的情况不同时，步骤702的具体实现也有所不同，以下通过情况(1)和情况(2)分别进行说明。可以理解的是，在上述情况1至情况3下，由于第一时间段是在第一侦听窗内确定的，因此，第一时间段即第一侦听窗和第一时间段重叠的部分。
情况(1)：第一侦听窗和第一时间段重叠的部分小于或等于第一阈值。
情况(1)包括：第一侦听窗和第一时间段没有重叠(也就是说，在第一侦听窗内，发送终端一直处于非激活状态)，或，第一侦听窗和第一时间段重叠的部分大于0小于或等于第一阈值(也就是说，在第一侦听窗内，发送终端处于激活状态的时间大于0小于或等于第一阈值)。
情况(1)也可以理解为：发送终端在第一侦听窗内处于接收状态的时隙的总个数小于或等于预设的时隙个数。
在情况(1)下，步骤702在具体实现时可以包括：确定第二侦听窗和选择窗(记为第一选择窗)，第二侦听窗位于第一侦听窗之后，第一选择窗位于第二侦听窗之后。具体的，第一侦听窗位于时刻n之前，第二侦听窗位于时刻n之后。
该情况下，步骤703在具体实现时可以包括：根据在第二侦听窗内的侦听结果在第一选择窗内确定第一资源。
可选的，第二侦听窗和第一选择窗之间的时间间隔大于或等于处理侦听结果和确定第一资源所需的时间。
可选的，参见图10，第二侦听窗的起始时刻为(n+t A)，结束时刻为(n+t B)。
其中，0≤t A＜t B，t A大于或等于确定第一侦听窗、第二侦听窗和第一选择窗所需的时间。由于这段时间取决于发送终端的设备能力，可以很短以至于忽略不计，此时，t A＝0。
另外，t B＜第二阈值。其中，第二阈值可以为剩余PDB。可选的，参见图10，第一选择窗的起始时刻为(n+t B+t D+t E)，结束时刻为(n+t F)。
其中，t D≥0，t D大于或等于处理侦听结果所需的时间。由于这段时间取决于发送终端的设备能力，可以很短以至于忽略不计，此时，t D＝0。t E≥0，t E大于或等于确定第一资源所需的时间。由于这段时间取决于发送终端的设备能力，可以很短以至于忽略不计，此时，t E＝0。
另外，t B+t D+t E＜t F≤第二阈值。
示例性的，t F可以为上述t 2。
在情况(1)下，可以理解的是，如果发送终端要在第二侦听窗进行侦听，那么发送终端要在第二侦听窗处于激活状态，因此，可选的，所述方法还包括：
若在第二侦听窗的起始时刻的状态为DRX的非激活状态，切换为DRX的激活状态并将DRX的激活状态至少持续至第二侦听窗结束；或者，
若在第二侦听窗的起始时刻的状态为DRX的激活状态，将DRX的激活状态至少持续至第二侦听窗结束。
可选地，在第二侦听窗结束后，发送终端可以再将DRX的激活状态切换为DRX的非激活状态。
在情况(1)下，第一侦听窗和第一时间段重叠的部分小于或等于第一阈值，发送终端无法获得足够的侦听信息，以导致侦听结果不能完整地反映出信道使用状况，因此，只能在现有的选择窗随机选择资源或依据不足够的侦听信息确定不完整的侦听结果，导致发送终端选择的资源和其他终端选择的资源的碰撞概率增大，进而导致整个系统的传输可靠性降低。本申请实施例提供的方法，发送终端通过确定第二侦听窗和第一选择窗，并在第一选择窗中进行资源选择，可以降低资源冲突概率，提升传输可靠性。随着资源冲突概率的降低，发送终端选择资源的次数变少，因此，本申请实施例提供的方法，还可以提高资源利用率。
情况(2)：第一侦听窗和第一时间段重叠的部分大于第一阈值，也就是说，在第一侦听窗内，发送终端处于激活状态的时间大于第一阈值。
情况(2)也可以理解为：发送终端在第一侦听窗内处于接收状态的时隙的总个数大于预设的时隙个数。
在情况(2)下，步骤702在具体实现时可以包括：根据在第一侦听窗和第一时间段重叠的部分内的侦听结果在选择窗(记为第二选择窗)内确定第一资源，第二选择窗位于第一侦听窗之后。具体的，第二选择窗即上文中的[n+t 1，n+t 2]，位于时刻n之后。
在上述实施例中，第一阈值可以记为Th ses_DRX。Th ses_DRX可以为预定义的或预设的或协议规定的或接入网设备为发送终端配置的，还可以为采用其他方式确定的，本申请不作限制。Th ses_DRX可以与定义侦听窗和选择窗的范围时采用的单位一致，例如，Th ses_DRX可以是以秒、毫秒或者时隙等为单位的整数值。
在上述实施例中，可选的，所述第一选择窗位于所述第二选择窗内。也就是说，第一选择窗是一个相较于第二选择窗而言缩减的选择窗。在不超出原有选择窗的范围内进行选择资源，可以保证数据包的时延要求。
703、在第一资源上发送数据。
其中，步骤703在具体实现时，发送终端可以在第一资源上向接收终端发送数据。
本申请实施例提供的方法，在进行资源选择时，考虑到了发送终端的DRX激活时间，从而根据发送终端的DRX激活时间确定选择窗，更加合理的进行资源选择，降低发送终端使用的资源和其他终端使用的资源的碰撞概率，提高传输可靠性。
在上述实施例中，为了区别于现有的侦听窗(即本申请中的第一侦听窗)，第二侦听窗可以称为延展侦听窗(extended sensing window)。针对第一侦听窗，第二选择窗中的资源为候选资源(Candidate Resources)，针对第二侦听窗，第一选择窗中的资源为候选资源。
在实际实现时，若发送终端未被配置DRX模式，发送终端可以采用现有方法进行资源选择。若发送终端被配置DRX模式，发送终端可以采用本申请提供的方法进行资源选择。
需要说明的是，在侧行链路上，DRX激活时间也可能只包括DRX持续时间，该 情况下，DRX激活时间与DRX持续时间实际上是相同的，此时，上述第一时间段可以包括第一侦听窗中的全部DRX持续时间。
为了使得本申请实施例提供的方法更加的清楚，以下通过图11对上述实施例提供的方法的实现流程作示例性说明，参见图11，该流程包括：
1101、发送终端在时刻n被触发资源选择。
1102、发送终端确定第一侦听窗。
1103、发送终端确定第一侦听窗和第一时间段重叠的部分是否大于第一阈值。
若否，执行步骤1104至步骤1107，若是，执行步骤1108至步骤1110。
1104、发送终端确定第二侦听窗和第一选择窗。
1105、发送终端通过将非激活状态切换为激活状态，或者，维持激活状态使得第二侦听窗内发送终端处于激活状态。
1106、发送终端根据在第二侦听窗内的侦听结果确定第一选择窗中的可用的资源。
1107、发送终端在第一选择窗中的可用的资源内确定第一资源。
1108、发送终端确定第二选择窗。
1109、发送终端根据第一侦听窗内的侦听结果确定第二选择窗中的可用的资源。
1110、发送终端在第二选择窗中的可用的资源内确定第一资源。
1111、发送终端在第一资源上向接收终端发送数据。
本申请实施例中，各个侦听窗和各个选择窗可以以时隙为单位进行定义，也可以以其他时间单元进行定义，本申请不作限制。
本申请实施例提供的方法，除了可以应用在两个终端之间直连通信的场景之外，还可以应用在终端中继(relay)场景(即通过某个/某些终端为其他终端提供中继服务的场景)或终端协作(cooperation)场景中，本申请不作限制。
上述主要从方法的角度对本申请实施例的方案进行了介绍。可以理解的是，各个网元，例如，通信装置为了实现上述功能，其包含了执行各个功能相应的硬件结构和软件模块中的至少一个。本领域技术人员应该很容易意识到，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，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，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。
本申请实施例可以根据上述方法示例对通信装置进行功能单元的划分，例如，可以对应各个功能划分各个功能单元，也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。需要说明的是，本申请实施例中对单元的划分是示意性的，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。
示例性的，图12示出了上述实施例中所涉及的通信装置(记为通信装置120)的一种可能的结构示意图，该通信装置120包括处理单元1201和收发单元1202。可选的，还包括存储单元1203。通信装置120可以用于示意上述实施例中的发送终端的结构。
具体的，处理单元1201用于对发送终端的动作进行控制管理，例如，处理单元1201用于执行图7中的步骤、图11中的步骤，和/或本申请实施例中所描述的其他过程中的 发送终端执行的动作。处理单元1201可以通过收发单元1202与其他网络实体通信，例如，与接收终端通信。存储单元1203用于存储发送终端的程序代码和数据。
示例性的，通信装置120可以为终端也可以为芯片或芯片系统。
当通信装置120为终端时，处理单元1201可以是处理器；收发单元1202可以是通信接口、收发器，或，输入接口和/或输出接口。可选地，收发器可以为收发电路。可选地，输入接口可以为输入电路，输出接口可以为输出电路。
当通信装置120为芯片或芯片系统时，收发单元1202可以是该芯片或芯片系统上的通信接口、输入接口和/或输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。处理单元1201可以是处理器、处理电路或逻辑电路等。
示例性的，本申请实施例中的通信装置包括处理器和收发器，用以实现前述实施例提供的方法中通信装置的相应功能。
具体地，处理器用于确定第一侦听窗，根据第一侦听窗和第一时间段确定选择窗，在选择窗内确定第一资源；其中，第一时间段包括部分或全部DRX激活时间；收发器，用于在第一资源上发送数据。
可选的，第一侦听窗和第一时间段重叠的部分小于或等于第一阈值，处理器，具体用于确定第二侦听窗和选择窗，其中，第二侦听窗位于第一侦听窗之后，选择窗位于第二侦听窗之后。
可选的，处理器，具体用于：根据在第二侦听窗内的侦听结果在选择窗内确定第一资源。
可选的，处理器，还用于在第二侦听窗的起始时刻的状态为DRX的非激活状态时，切换为DRX的激活状态并将DRX的激活状态至少持续至第二侦听窗结束；或者，处理器，还用于在第二侦听窗的起始时刻的状态为DRX的激活状态时，将DRX的激活状态至少持续至第二侦听窗结束。
可选的，第二侦听窗和选择窗之间的时间间隔大于或等于处理侦听结果和确定第一资源所需的时间。
可选的，第一侦听窗在时刻n被处理器确定，第二侦听窗的起始时刻为(n+t A)，结束时刻为(n+t B)，t A大于或等于确定第一侦听窗、第二侦听窗和选择窗所需的时间，0≤t A＜t B。
可选的，选择窗的起始时刻为(n+t B+t D+t E)，结束时刻为(n+t F)，t D大于或等于处理侦听结果所需的时间，t D≥0，t E大于或等于确定第一资源所需的时间，t E≥0，t B+t D+t E＜t F≤第二阈值。
可选的，第一侦听窗和第一时间段重叠的部分大于第一阈值，处理器，具体用于根据在第一侦听窗和第一时间段重叠的部分内的侦听结果在选择窗内确定第一资源，选择窗位于第一侦听窗之后。
可选的，第一时间段为第一侦听窗中的全部的DRX激活时间；或者，第一时间段为第一侦听窗中的DRX持续时间。
图12中的集成的单元如果以软件功能模块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，本申请实施例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全部或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，或者接入网设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。存储计算机软件产品的存储介质包括：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。
本申请实施例还提供了一种通信装置的硬件结构示意图，参见图13或图14，该通信装置包括处理器1301，可选的，还包括与处理器1301连接的存储器1302。
处理器1301可以是一个通用中央处理器(central processing unit，CPU)、微处理器、特定应用集成电路(application-specific integrated circuit，ASIC)，或者一个或多个用于控制本申请方案程序执行的集成电路。处理器1301也可以包括多个CPU，并且处理器1301可以是一个单核(single-CPU)处理器，也可以是多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路或用于处理数据(例如计算机程序指令)的处理核。
存储器1302可以是ROM或可存储静态信息和指令的其他类型的静态存储设备、RAM或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，本申请实施例对此不作任何限制。存储器1302可以是独立存在(此时，处理器可以位于通信装置外，也可以位于通信装置内)，也可以和处理器1301集成在一起。其中，存储器1302中可以包含计算机程序代码。处理器1301用于执行存储器1302中存储的计算机程序代码，从而实现本申请实施例提供的方法。
在第一种可能的实现方式中，参见图13，通信装置还包括收发器1303。处理器1301、存储器1302和收发器1303通过总线相连接。收发器1303用于与其他设备或通信网络通信。可选的，收发器1303可以包括发射机和接收机。收发器1303中用于实现接收功能的器件可以视为接收机，接收机用于执行本申请实施例中的接收的步骤。收发器1303中用于实现发送功能的器件可以视为发射机，发射机用于执行本申请实施例中的发送的步骤。
基于第一种可能的实现方式，图13所示的结构示意图可以用于示意上述实施例中所涉及的发送终端的结构。具体的，处理器1301用于对发送终端的动作进行控制管理，例如，处理器1301用于执行图7中的步骤、图11中的步骤，和/或本申请实施例中所描述的其他过程中的发送终端执行的动作。处理器1301可以通过收发器1303与其他网络实体通信，例如，与接收终端通信。存储器1302用于存储发送终端的程序代码和数据。
在第二种可能的实现方式中，处理器1301包括逻辑电路以及输入接口和输出接口中的至少一个。示例性的，输出接口用于执行相应方法中的发送的动作，输入接口用于执行相应方法中的接收的动作。
基于第二种可能的实现方式，参见图14，图14所示的结构示意图可以用于示意上述实施例中所涉及的发送终端的结构。具体的，处理器1301用于对发送终端的动作进 行控制管理，例如，处理器1301用于执行图7中的步骤、图11中的步骤，和/或本申请实施例中所描述的其他过程中的发送终端执行的动作。处理器1301可以通过输入接口和输出接口中的至少一个与其他网络实体通信，例如，与接收终端通信。存储器1302用于存储发送终端的程序代码和数据。
在实现过程中，本实施例提供的方法中的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
另外，本申请实施例还提供了一种发送终端(记为发送终端150)的硬件结构示意图，具体可分别参见图15。
图15为发送终端150的硬件结构示意图。为了便于说明，图15仅示出了发送终端的主要部件。如图15所示，发送终端150包括处理器、存储器、控制电路、天线以及输入输出装置。
处理器主要用于对通信协议以及通信数据进行处理，以及对整个发送终端进行控制，执行软件程序，处理软件程序的数据，例如，用于控制发送终端执行图7中的步骤、图11中的步骤，以及本申请实施例中所描述的其他过程中的发送终端执行的动作中的部分或全部动作。存储器主要用于存储软件程序和数据。控制电路(也可以称为射频电路)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。控制电路和天线一起也可以叫做收发器，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。
当发送终端开机后，处理器可以读取存储器中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过天线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至控制电路中的控制电路，控制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。当有数据发送到发送终端时，控制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15仅示出了一个存储器和处理器。在实际的终端中，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。
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个发送终端进行控制，执行软件程序，处理软件程序的数据。图15中的处理器集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，发送终端可以包括多个基带处理器以适应不同的网络制式，发送终端可以包括多个中央处理器以增强其处理能力，发送终端的各个部件可以通过各种总线连接。该基带处理器也可以表述为基带处理电路或者基带处理芯片。该中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储器中，由处理器执行软件程序以实现基带处理功能。
本申请实施例还提供了一种计算机可读存储介质，包括指令，当其在计算机上运 行时，使得计算机执行上述任一方法。
本申请实施例还提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述任一方法。
本申请实施例还提供了一种通信系统，包括：接收终端和上述实施例中的发送终端。可选的，还包括接入网设备。
本申请实施例还提供了一种通信装置，包括：处理器和接口电路，接口电路用于接收代码指令并传输至处理器，处理器，用于运行代码指令以执行上述实施例提供的任意一种方法。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可以用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质(例如，软盘、硬盘、磁带)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state drive，SSD))等。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看附图、公开内容、以及所附权利要求书，可理解并实现公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (21)

  1. 一种数据传输方法，其特征在于，包括：
    确定第一侦听窗；
    根据所述第一侦听窗和第一时间段确定选择窗，其中，所述第一时间段包括部分或全部非连续接收DRX激活时间；
    在所述选择窗内确定第一资源；
    在所述第一资源上发送数据。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述第一侦听窗和第一时间段确定选择窗，包括：
    所述第一侦听窗和所述第一时间段重叠的部分小于或等于第一阈值，确定第二侦听窗和所述选择窗，其中，所述第二侦听窗位于所述第一侦听窗之后，所述选择窗位于所述第二侦听窗之后。
  3. 根据权利要求2所述的方法，其特征在于，所述在所述选择窗内确定第一资源，包括：
    根据在所述第二侦听窗内的侦听结果在所述选择窗内确定所述第一资源。
  4. 根据权利要求2或3所述的方法，其特征在于，所述方法还包括：
    若在所述第二侦听窗的起始时刻的状态为DRX的非激活状态，切换为DRX的激活状态并将所述DRX的激活状态至少持续至所述第二侦听窗结束；或者，
    若在所述第二侦听窗的起始时刻的状态为DRX的激活状态，将所述DRX的激活状态至少持续至所述第二侦听窗结束。
  5. 根据权利要求2-4任一项所述的方法，其特征在于，所述第二侦听窗和所述选择窗之间的时间间隔大于或等于处理侦听结果和确定所述第一资源所需的时间。
  6. 根据权利要求2-5任一项所述的方法，其特征在于，所述第一侦听窗在时刻n被确定，所述第二侦听窗的起始时刻为(n+t A)，结束时刻为(n+t B)，t A大于或等于确定所述第一侦听窗、所述第二侦听窗和所述选择窗所需的时间，0≤t A＜t B。
  7. 根据权利要求6所述的方法，其特征在于，所述选择窗的起始时刻为(n+t B+t D+t E)，结束时刻为(n+t F)，所述t D大于或等于处理侦听结果所需的时间，t D≥0，所述t E大于或等于确定所述第一资源所需的时间，t E≥0，t B+t D+t E＜t F≤第二阈值。
  8. 根据权利要求1所述的方法，其特征在于，所述根据所述第一侦听窗和第一时间段确定选择窗，在所述选择窗内确定第一资源，包括：
    所述第一侦听窗和所述第一时间段重叠的部分大于第一阈值，根据在所述第一侦听窗和所述第一时间段重叠的部分内的侦听结果在所述选择窗内确定所述第一资源，所述选择窗位于所述第一侦听窗之后。
  9. 根据权利要求1-8任一项所述的方法，其特征在于，
    所述第一时间段为所述第一侦听窗中的全部的DRX激活时间；或者，
    所述第一时间段为所述第一侦听窗中的DRX持续时间。
  10. 一种通信装置，其特征在于，所述装置包括处理单元和收发单元；
    所述处理单元，用于确定第一侦听窗，根据所述第一侦听窗和第一时间段确定选择窗，在所述选择窗内确定第一资源；其中，所述第一时间段包括部分或全部非连续 接收DRX激活时间；
    所述收发单元，用于在所述第一资源上发送数据。
  11. 根据权利要求10所述的装置，其特征在于，
    所述第一侦听窗和所述第一时间段重叠的部分小于或等于第一阈值，所述处理单元，具体用于确定第二侦听窗和所述选择窗，其中，所述第二侦听窗位于所述第一侦听窗之后，所述选择窗位于所述第二侦听窗之后。
  12. 根据权利要求11所述的装置，其特征在于，所述处理单元，具体用于：
    根据在所述第二侦听窗内的侦听结果在所述选择窗内确定所述第一资源。
  13. 根据权利要求11或12所述的装置，其特征在于，
    所述处理单元，还用于在所述第二侦听窗的起始时刻的状态为DRX的非激活状态时，切换为DRX的激活状态并将所述DRX的激活状态至少持续至所述第二侦听窗结束；或者，
    所述处理单元，还用于在所述第二侦听窗的起始时刻的状态为DRX的激活状态时，将所述DRX的激活状态至少持续至所述第二侦听窗结束。
  14. 根据权利要求11-13任一项所述的装置，其特征在于，所述第二侦听窗和所述选择窗之间的时间间隔大于或等于处理侦听结果和确定所述第一资源所需的时间。
  15. 根据权利要求11-14任一项所述的装置，其特征在于，所述第一侦听窗在时刻n被所述处理单元确定，所述第二侦听窗的起始时刻为(n+t A)，结束时刻为(n+t B)，t A大于或等于确定所述第一侦听窗、所述第二侦听窗和所述选择窗所需的时间，0≤t A＜t B。
  16. 根据权利要求15所述的装置，其特征在于，所述选择窗的起始时刻为(n+t B+t D+t E)，结束时刻为(n+t F)，所述t D大于或等于处理侦听结果所需的时间，t D≥0，所述t E大于或等于确定所述第一资源所需的时间，t E≥0，t B+t D+t E＜t F≤第二阈值。
  17. 根据权利要求10所述的装置，其特征在于，
    所述第一侦听窗和所述第一时间段重叠的部分大于第一阈值，所述处理单元，具体用于根据在所述第一侦听窗和所述第一时间段重叠的部分内的侦听结果在所述选择窗内确定所述第一资源，所述选择窗位于所述第一侦听窗之后。
  18. 根据权利要求10-17任一项所述的装置，其特征在于，
    所述第一时间段为所述第一侦听窗中的全部的DRX激活时间；或者，
    所述第一时间段为所述第一侦听窗中的DRX持续时间。
  19. 一种通信装置，其特征在于，包括：处理器；
    所述处理器与存储器连接，所述存储器用于存储计算机执行指令，所述处理器执行所述存储器存储的所述计算机执行指令，以使所述通信装置实现如权利要求1-9任一项所述的方法。
  20. 一种通信装置，其特征在于，包括：处理器和接口电路；
    所述接口电路，用于接收代码指令并传输至所述处理器；
    所述处理器，用于运行所述代码指令以执行如权利要求1-9中任一项所述的方法。
  21. 一种可读存储介质，其特征在于，用于存储计算机指令，当所述指令被执行时，使如权利要求1-9中任一项所述的方法被实现。
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