WO2023065367A1 - 无线通信的方法、终端设备和网络设备 - Google Patents

无线通信的方法、终端设备和网络设备 Download PDF

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Publication number
WO2023065367A1
WO2023065367A1 PCT/CN2021/125918 CN2021125918W WO2023065367A1 WO 2023065367 A1 WO2023065367 A1 WO 2023065367A1 CN 2021125918 W CN2021125918 W CN 2021125918W WO 2023065367 A1 WO2023065367 A1 WO 2023065367A1
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WIPO (PCT)
Prior art keywords
synchronization
synchronization time
time slots
time slot
terminal device
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PCT/CN2021/125918
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English (en)
French (fr)
Inventor
马腾
赵振山
吴作敏
Original Assignee
Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2021/125918 priority Critical patent/WO2023065367A1/zh
Priority to CN202180101867.4A priority patent/CN117882449A/zh
Publication of WO2023065367A1 publication Critical patent/WO2023065367A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the embodiments of the present application relate to the communication field, and more specifically, relate to a wireless communication method, a terminal device, and a network device.
  • the synchronous transmission resource and the sidelink data transmission resource in the sidelink transmission are time division multiplexing (Time Division Multiplexing, TDM) .
  • TDM Time Division Multiplexing
  • the synchronization resource used for transmitting the synchronization signal is not included in the resource pool used for sidelink data transmission.
  • the terminal needs to send and receive sidelink synchronization signals on different time domain resources.
  • two or three sets of synchronization resources are supported in each synchronization period, and each set of synchronization resources includes multiple transmission opportunities to send or receive synchronization signals, so as to improve the detection performance of terminal equipment.
  • Embodiments of the present application provide a wireless communication method, terminal equipment, and network equipment, which support multiple terminal equipment to send synchronization signals on one synchronization resource, improve the reliability and completeness of the synchronization mechanism of the sidelink, and improve system performance.
  • a wireless communication method includes:
  • the terminal device determines synchronization resources of the sidelink, where the synchronization resources include N synchronization time slots, where N is a positive integer;
  • the terminal device occupies at least part of the synchronization time slots in the N synchronization time slots to send the synchronization signal.
  • a wireless communication method in a second aspect, includes:
  • the network device sends configuration information to the terminal device, where the configuration information is used to configure the terminal device to occupy at least some of the synchronization time slots in the N synchronization time slots of the synchronization resources to send synchronization signals, where N is a positive integer.
  • a terminal device configured to execute the method in the first aspect above.
  • the terminal device includes a functional module for executing the method in the first aspect above.
  • a network device configured to execute the method in the second aspect above.
  • the network device includes a functional module for executing the method in the second aspect above.
  • a terminal device including a processor and a memory; wherein, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, and execute the method in the first aspect above .
  • a sixth aspect provides a network device, including a processor and a memory; wherein, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect above .
  • an apparatus for implementing the method in the first aspect above.
  • the device includes: a processor, configured to invoke and run a computer program from a memory, so that a device installed with the device executes the method in the first aspect above.
  • an apparatus for implementing the method in the second aspect above.
  • the device includes: a processor, configured to invoke and run a computer program from a memory, so that a device installed with the device executes the method in the second aspect above.
  • a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute the method in the first aspect above, or the method in the second aspect.
  • a computer program product including computer program instructions, the computer program instructions cause a computer to execute the method in the first aspect above, or the method in the second aspect.
  • a computer program which, when running on a computer, causes the computer to execute the method in the first aspect above, or the method in the second aspect.
  • the synchronization resources of the terminal equipment include an additional number, that is, redundant synchronization time slot resources, so that the terminal equipment can occupy part or all of the synchronization time slots in the N synchronization time slots to send synchronization signals, thereby facilitating It is used to enable terminal devices to determine whether to use synchronization resources to send synchronization signals according to the results of channel access, which in turn helps to support multiple terminal devices to send synchronization signals on one synchronization resource, and improves the reliability of the synchronization mechanism of the sidelink and completeness to improve system performance.
  • FIG. 1 is a schematic diagram of a communication system architecture applied in an embodiment of the present application.
  • Fig. 2 is a schematic diagram of another communication system architecture applied in the embodiment of the present application.
  • Fig. 3 is a schematic diagram of uplink communication within a network coverage provided by the present application.
  • Fig. 4 is a schematic diagram of partial network coverage side communication provided by the present application.
  • Fig. 5 is a schematic diagram of outbound communication provided by the network coverage provided by the present application.
  • Fig. 6 is a schematic diagram of unicast sidelink communication provided by the present application.
  • Fig. 7 is a schematic diagram of multicast sideline communication provided by the present application.
  • Fig. 8 is a schematic diagram of broadcast sideline communication provided by the present application.
  • Fig. 9 is a schematic diagram of resource selection based on interception provided by the present application.
  • Fig. 10 is a schematic diagram of channel occupancy provided in this application.
  • FIG. 11 is a schematic diagram of an FBE-based channel access manner provided by the present application.
  • Fig. 12 is a schematic diagram of channel access type switching provided in this application.
  • Fig. 13 is a schematic diagram of a synchronization resource provided by the present application.
  • Fig. 14 is a schematic diagram of another synchronization resource provided by the present application.
  • Fig. 15 is a schematic diagram of another synchronization resource provided by the present application.
  • Fig. 16 is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application.
  • Fig. 17 is a specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • Fig. 18 is another specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • Fig. 19 is another specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • FIG. 20 is another specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • Fig. 21 is another specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • Fig. 22 is another specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • FIG. 23 is another specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • Fig. 24 is another specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • Fig. 25 is another specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • Fig. 26 is another specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • Fig. 27 is a schematic flowchart of another wireless communication method provided according to an embodiment of the present application.
  • Fig. 28 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
  • Fig. 29 is a schematic block diagram of a network device provided according to an embodiment of the present application.
  • Fig. 30 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
  • Fig. 31 is a schematic block diagram of a device provided according to an embodiment of the present application.
  • Fig. 32 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
  • the technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.
  • GSM Global System of Mobile
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) deployment Web scene.
  • Carrier Aggregation, CA Carrier Aggregation
  • DC Dual Connectivity
  • SA independent deployment Web scene
  • the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered as non-shared spectrum.
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • user equipment User Equipment, UE
  • access terminal user unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless communication device
  • wireless communication device user agent or user device
  • the terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
  • PLMN Public Land Mobile Network
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • a virtual reality (Virtual Reality, VR) terminal device an augmented reality (Augmented Reality, AR) terminal Equipment
  • wireless terminal equipment in industrial control wireless terminal equipment in self driving
  • wireless terminal equipment in remote medical wireless terminal equipment in smart grid
  • wireless terminal equipment in transportation safety wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the network device may be a device for communicating with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , or a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network A network device or a base station (gNB) in a network device or a network device in a future evolved PLMN network or a network device in an NTN network.
  • AP Access Point
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolved base station
  • LTE Long Term Evolution
  • eNB evolved base station
  • gNB base station
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network equipment may be a satellite or a balloon station.
  • the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc.
  • the network device may also be a base station installed on land, water, and other locations.
  • the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the transmission resources for example, frequency domain resources, or spectrum resources
  • the cell may be a network device (
  • the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell)
  • the small cell here may include: a metro cell (Metro cell), a micro cell (Micro
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • predefinition can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices).
  • the implementation method is not limited.
  • pre-defined may refer to defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which is not limited in the present application.
  • Fig. 1 is a schematic diagram of a communication system to which the embodiment of the present application is applicable.
  • the transmission resources of the vehicle-mounted terminals (vehicle-mounted terminal 121 and vehicle-mounted terminal 122 ) are allocated by the base station 110 , and the vehicle-mounted terminals transmit data on the sidelink according to the resources allocated by the base station 110 .
  • the base station 110 may allocate resources for a single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal.
  • Fig. 2 is a schematic diagram of another communication system to which the embodiment of the present application is applicable.
  • the vehicle-mounted terminals (vehicle-mounted terminal 131 and vehicle-mounted terminal 132 ) autonomously select transmission resources on sidelink resources for data transmission.
  • the vehicle-mounted terminal may select transmission resources randomly, or select transmission resources by listening.
  • side communication according to the network coverage of the communicating terminal, it can be divided into network coverage inner communication, as shown in Figure 3; part of the network coverage side communication, as shown in Figure 4 ; and network coverage outer line communication, as shown in FIG. 5 .
  • Figure 3 In network coverage inner line communication, all terminals performing side line communication are within the coverage of the same base station, thus, the above terminals can all perform side line based on the same side line configuration by receiving configuration signaling from the base station communication.
  • FIG 4 In the case of partial network coverage for sidelink communication, some terminals performing sidelink communication are located within the coverage of the base station. These terminals can receive configuration signaling from the base station and perform sidelink communication according to the configuration of the base station. However, terminals located outside the network coverage cannot receive the configuration signaling from the base station. In this case, the terminals outside the network coverage will use the pre-configuration information and the physical The information carried in the Physical Sidelink Broadcast Channel (PSBCH) determines the sidelink configuration for sidelink communication.
  • PSBCH Physical Sidelink Broadcast Channel
  • Figure 5 For outbound communication under network coverage, all terminals performing side communication are located outside the network coverage, and all terminals determine side communication according to pre-configuration information to perform side communication.
  • device-to-device communication is based on a sidelink (Sidelink, SL) transmission technology based on device to device (D2D), and the communication data in the traditional cellular system is received or sent through the base station.
  • SL sidelink
  • D2D device to device
  • the method is different, so it has higher spectral efficiency and lower transmission delay.
  • the Internet of Vehicles system adopts the method of terminal-to-terminal direct communication, and two transmission modes are defined in 3GPP, which are respectively recorded as: the first mode and the second mode.
  • the first mode the transmission resources of the terminal are allocated by the base station, and the terminal sends data on the sidelink according to the resources allocated by the base station; the base station can allocate resources for a single transmission to the terminal, and can also allocate semi-static transmission to the terminal H. As shown in FIG. 3 , the terminal is located within the coverage of the network, and the network allocates transmission resources for sidelink transmission to the terminal.
  • the second mode the terminal selects a resource from the resource pool for data transmission.
  • the terminal is located outside the coverage of the cell, and the terminal independently selects transmission resources from the pre-configured resource pool for sidelink transmission; or, as shown in Figure 3, the terminal independently selects transmission resources from the resource pool configured by the network Make sideways transfers.
  • unicast transmission there is only one terminal at the receiving end, as shown in Figure 6, unicast transmission is performed between UE1 and UE2; for multicast transmission, the receiving end is all terminals in a communication group, or all terminals in a certain communication group All terminals within the transmission distance, as shown in Figure 7, UE1, UE2, UE3 and UE4 form a communication group, in which UE1 sends data, and other terminal devices in the group are receiving terminals; for broadcast transmission mode, its receiving The terminal is any terminal around the transmitting terminal. As shown in FIG. 8 , UE1 is the transmitting terminal, and other terminals around it, UE2-UE6 are all receiving terminals.
  • a resource pool is introduced in the sideline transmission system.
  • the so-called resource pool is a collection of transmission resources. Whether it is the transmission resource configured by the network or the transmission resource independently selected by the terminal, it is a resource in the resource pool.
  • Resource pools can be configured through pre-configuration or network configuration, and one or more resource pools can be configured.
  • the resource pool is further divided into a sending resource pool and a receiving resource pool.
  • the sending resource pool means that the transmission resources in the resource pool are used to send sidelink data;
  • the receiving resource pool means that the terminal receives sidelink data on the transmission resources in the resource pool.
  • full listening means that the terminal can listen to data sent by other terminals in all time slots (or subframes) except the time slot for sending data; and Partial sensing (partial sensing) is for terminal energy saving.
  • the terminal only needs to sense part of the time slot (or subframe), and selects resources based on the result of partial sensing.
  • the upper layer when the upper layer does not configure partial interception, it defaults to full interception for resource selection.
  • T 1 ⁇ 4; T 2min (prio TX ) ⁇ T 2 ⁇ 100, T 2min (prio TX ) is a parameter configured by the upper layer, and the selection of T 1 should be greater than the processing delay of the terminal, and the selection of T 2 needs to be within the service delay Within the required range, for example, if the service delay requirement is 50ms, then 20 ⁇ T 2 ⁇ 50, and the service delay requirement is 100ms, then 20 ⁇ T 2 ⁇ 100, as shown in FIG. 9 .
  • the process of resource selection by the terminal in the selection window is as follows: (The specific resource selection process can refer to the operation steps described in the above standard, and several main resource selection steps are listed here)
  • the terminal will select all available resources in the window as a set A.
  • the terminal has no listening result for some subframes in the listening window, the resources of these subframes in the corresponding subframes in the selection window are excluded.
  • PSSCH-RSRP Physical Sidelink Control Channel
  • the selection of the PSSCH-RSRP threshold is determined by the detected priority information carried in the PSCCH and the priority of the data to be transmitted by the terminal.
  • the terminal will increase the threshold of PSSCH-RSRP by 3dB, and repeat steps 1-3 until the number of remaining resources in set A is greater than the total number of resources 20%.
  • the terminal performs Sidelink Received Signal Strength Indicator (S-RSSI) detection on the remaining resources in set A, and sorts them according to the energy level, and sorts the 20% with the lowest energy (relative to the resources in set A) Number of resources) Resources are put into collection B.
  • S-RSSI Sidelink Received Signal Strength Indicator
  • the terminal selects a resource from set B with a medium probability for data transmission.
  • the terminal based on partial interception selects Y time slots in the resource selection window, and judges whether the resources on the Y time slots can be used as candidate resources according to the interception results, and puts them in the set if they can In S B , if the number of elements in the set S B is greater than or equal to 20% of the total number of resources on Y time slots, report S B to the upper layer.
  • LBT Listen Before Talk
  • the unlicensed spectrum is the spectrum allocated by the country and region that can be used for radio device communication.
  • This spectrum is usually considered a shared spectrum, that is, communication devices in different communication systems can be used as long as they meet the regulatory requirements set by the country or region on the spectrum. To use this spectrum, there is no need to apply to the government for exclusive spectrum authorization.
  • the communication device follows the "LBT" principle, that is, before the communication device transmits signals on the channel of the unlicensed spectrum, it needs to perform channel detection first, and only when the channel detection result shows that the channel is idle, the communication device can perform signal transmission ; If the result of the channel detection of the communication device on the channel of the unlicensed frequency spectrum is that the channel is busy, the communication device cannot perform signal transmission. In order to ensure fairness, in one transmission, the duration of signal transmission by the communication device using the channel of the unlicensed spectrum cannot exceed the Maximum Channel Occupancy Time (MCOT).
  • MCOT Maximum Channel Occupancy Time
  • MCOT Maximum channel occupancy time
  • Channel Occupancy Time Refers to the length of time that the channel is used for signal transmission after successful channel detection on the shared spectrum channel. It can also be considered as the time for occupying the channel after successful channel detection on the shared spectrum channel length of time. Wherein, the channel occupied by the signal within the time length may be continuous or discontinuous, and the time length includes the total time for signal transmission by the device initiating the channel occupation and the device occupied by the shared channel.
  • Channel occupancy time of network equipment (gNB/eNB-initiated COT): also known as COT initiated by network equipment, refers to the channel occupancy time obtained by the network equipment after successful channel detection on the channel of the shared spectrum.
  • the COT initiated by the network device can not only be used for network device transmission, but also can be used for terminal device transmission under certain conditions.
  • the COT of the network device is used by the terminal device for transmission, and it is also called that the terminal device shares the COT for transmission.
  • UE-initiated COT refers to the channel occupancy time obtained by the terminal equipment after successful channel detection on the channel of the shared spectrum.
  • the COT initiated by the terminal device can not only be used for transmission by the terminal device, but also can be used by the network device for transmission if certain conditions are met.
  • Downlink transmission burst A group of downlink transmissions performed by network equipment (that is, including one or more downlink transmissions), the group of downlink transmissions is continuous transmission (that is, there is no gap between multiple downlink transmissions), or the group There is a gap in the downlink transmission but the gap is less than or equal to 16 ⁇ s. If the gap between two downlink transmissions performed by the network device is greater than 16 ⁇ s, then the two downlink transmissions are considered to belong to two downlink transmission opportunities.
  • Uplink transmission burst A group of uplink transmissions (that is, including one or more uplink transmissions) performed by a terminal device, and the group of uplink transmissions is continuous transmission (that is, there is no gap between multiple uplink transmissions), or the There is a gap in the group upstream transmission but the gap is less than or equal to 16 ⁇ s. If the gap between two uplink transmissions performed by the terminal device is greater than 16 ⁇ s, it is considered that the two uplink transmissions belong to two uplink transmission opportunities.
  • Channel detection successful also known as channel detection idle.
  • the energy detection performed on the channel in the detection time slot is lower than the energy detection threshold.
  • Channel detection failure also known as channel detection busy.
  • the energy detection performed on the channel in the detection time slot is higher than or equal to the energy detection threshold.
  • Channel Access Type (CAT or Cat): Including Type 1 channel access type or Type 2 channel access type.
  • Type 1 channel access type is equivalent to Cat-4 LBT
  • Type 2 channel access type is equivalent to 25 ⁇ s Cat-2 LBT.
  • resources in the COT may be used for uplink transmission by the UE.
  • the UE For an uplink transmission opportunity that occurs within the COT of a network device, if the gap between the start position of the uplink transmission opportunity and the end position of the downlink transmission opportunity is less than 16 ⁇ s, the UE can immediately perform the uplink transmission (or Cat-1 LBT) ; If within the COT of the network device, there is no downlink (downlink, DL) transmission opportunity behind the uplink (uplink, UL) transmission opportunity, the UE can perform Cat-2 LBT before transmission; if within the COT of the network device, If the gap between any two adjacent transmissions is less than or equal to 25 ⁇ s, the UE can perform Cat-2 LBT.
  • Figure 10 gives an example.
  • Cat-1 LBT can mean that the communication equipment transmits without channel detection after the gap ends;
  • Cat-2 LBT can mean that the communication equipment performs single-slot channel detection, specifically, Cat-2 LBT can include 25 microseconds Single slot channel detection and 16 microsecond single slot channel detection.
  • the UE For an uplink transmission opportunity that occurs within the COT of the network device, if the gap between the start position of the uplink transmission opportunity and the end position of the downlink transmission opportunity is 16 ⁇ s, the UE can perform Cat-2 LBT for 16 ⁇ s before the uplink transmission; If the gap between the start position of the uplink transmission opportunity and the end position of the downlink transmission opportunity is 25 ⁇ s, the UE can perform Cat-2 LBT for 25 ⁇ s before the uplink transmission.
  • the network device may ensure the size of the gap between the start position of the uplink transmission opportunity and the end position of the downlink transmission opportunity, and notify the terminal device of the gap size information or the corresponding LBT mode.
  • the manner in which the network equipment obtains the above-mentioned channel occupancy time may be a load based equipment (LBE) channel access method, that is, the communication equipment can perform LBT on the unlicensed spectrum after the service arrives, and perform LBT on the LBT Start the signal transmission after success; it can also be a frame based equipment (FBE) channel access method, that is, the communication device periodically performs LBT on the unlicensed spectrum.
  • LBE load based equipment
  • FBE frame based equipment
  • Cat-4 LBT can refer to the channel detection method of communication equipment as multi-slot channel detection with random back-off based on contention window size adjustment. Specifically, Cat-4 LBT can include different channel access priorities according to the priorities of transmission services.
  • the frame structure appears periodically, and a frame structure includes a fixed frame period (length not exceeding 200 ms), channel occupation time (length not exceeding More than 95% of the fixed frame period), idle time (the length is at least 5% of the channel occupation time, the minimum value is 100us, and is located at the end of the fixed frame period), in addition, the channel idle detection (Clear Channel Assessment, CCA ).
  • the network device performs LBT on the unlicensed spectrum during the slot time (for example, it can be single-slot channel detection).
  • the channel occupation time in the next fixed frame period can be used to transmit signals; if the LBT fails, the next fixed frame period The channel occupation time within the frame period cannot be used for transmitting signals. In other words, the channel resources that the communication device can use for service transmission appear periodically.
  • LTE-LAA Long Term Evolution Licensed-Assisted Access
  • the network device when a terminal device is scheduled for physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) transmission, the network device will pass the downlink control information (DCI) carrying the uplink grant (UL grant) to indicate the channel access type and channel access priority corresponding to the PUSCH.
  • DCI downlink control information
  • Channel Access Type (Channel Access Type, CAT): 1 bit, used to indicate Type 1 channel access type or Type 2 channel access type.
  • the Type 1 channel access type is equivalent to Cat-4 LBT
  • the Type 2 channel access type is equivalent to 25 ⁇ s Cat-2 LBT.
  • the principle for the network device to indicate the channel access type is to indicate Cat-2 LBT if the PUSCH to be transmitted belongs to the COT of the network device, otherwise, indicate Cat-4 LBT.
  • Channel Access Priority Class 2 bits, when the channel access type is Type 1 channel access type, the 2 bits are used to determine the corresponding channel access parameters from Table 1 below.
  • Table 1 shows the channel access parameters corresponding to different channel access priorities under Cat-4 LBT. The smaller the value of p, the higher the channel access priority.
  • mp refers to the number of back-off slots corresponding to the channel access priority p
  • CWp refers to the contention window size corresponding to the channel access priority p
  • CWmin,p refers to the channel
  • the minimum value of the CWp value corresponding to the access priority p, CWmax,p refers to the maximum value of the CWp value corresponding to the channel access priority p
  • Tmcot,p refers to the maximum occupancy of the channel corresponding to the channel access priority p length of time.
  • the terminal device receives the public indication information sent by the network device, it determines the network device's channel access type according to the public indication information.
  • the channel occupancy time is shared with resources for uplink transmission, and it is determined that the PUSCH to be transmitted (that is, the first PUSCH scheduled by the first Physical Downlink Control Channel (PDCCH)) belongs to the channel occupancy time shared by the network equipment, Then the terminal device can switch the Type 1 channel access type corresponding to the PUSCH to the Type 2 channel access type.
  • PDCCH Physical Downlink Control Channel
  • the indication of the channel access type in the NR-U system is described.
  • the network device when the terminal device is scheduled for PUSCH transmission, can also indicate the channel access corresponding to the PUSCH through the downlink control information DCI carrying the uplink grant (UL grant) Type and channel access priority.
  • DCI carrying the uplink grant (UL grant) Type and channel access priority.
  • the channel access types that need to be indicated may include Cat-1 LBT, Cat-2 LBT, and Cat-4 LBT.
  • Cat-2 LBT includes 25 ⁇ s Cat- 2 LBT and 16 ⁇ s Cat-2 LBT.
  • the synchronization transmission resource and the sidelink data transmission resource are time-division multiplexed TDM, That is, it does not support the multiplexing of side sync signal and side data FDM. Further, when determining the resource pool for sidelink data transmission, the subframe or time slot where the synchronization signal is located is excluded from the available time domain resources, that is, the synchronization resources are not included in the resource pool.
  • the terminal needs to send and receive sideline synchronization signals on different time domain resources. Therefore, 2 or 3 subframes are required as synchronization resources in each synchronization cycle in LTE-V2X, among which, the introduction of the third synchronization resource is mainly used to use the Global Navigation Satellite System (Global Navigation Satellite System, GNSS) as the synchronization source
  • GNSS Global Navigation Satellite System
  • the period of the synchronization resource of the LTE-V2X system is 160ms, and each synchronization period includes 2 synchronization subframes.
  • the terminal acquires synchronization information on synchronization resource 1, it sends a synchronization signal on synchronization resource 2; Similarly, when the terminal acquires synchronization information on the synchronization resource 2, it can send a synchronization signal on the synchronization resource 1.
  • the priorities of synchronization signals sent by different terminals may be different.
  • the terminal detects a synchronization signal on the synchronization resource, it will detect synchronization signals of different priorities, and the terminal selects a synchronization source from multiple candidate synchronization sources according to the priority order.
  • the design of synchronization resources in the NR-V2X system combines the design of NR Uu and LTE-V2X systems.
  • the cycle of the synchronization resource is also 160ms, including multiple synchronization signal block (Synchronization Signal Block, SSB) transmission opportunities in one cycle. This is mainly because in FR2, different beams need to be used to transmit SSBs respectively, so as to achieve full coverage of the cell.
  • SSB Synchroms
  • 2 or 3 synchronization subframes are required in each synchronization period to overcome the influence of half-duplex.
  • each set of synchronization resources includes multiple transmission opportunities, which can improve the detection performance of the terminal.
  • Beam-based sidelink transmission is not supported in R16NR-V2X.
  • the existing V2X synchronization resource scheme is shown in Figure 15.
  • 2 sets of synchronization resources are configured within 160 ms of each synchronization cycle, and 4 synchronization time slots are configured in each set of synchronization resources.
  • the sender can Synchronization signals are sent on 4 time slots respectively.
  • the terminal detects a synchronization signal on a synchronization time slot, it can be determined that the synchronization time slot belongs to the first set according to the direct frame number (Direct Frame Number, DFN) and the time slot number carried in the PSBCH transmitted simultaneously with the synchronization signal.
  • the synchronization resource is still the second set of synchronization resources, and the terminal sends synchronization signals respectively on the 4 time slots of the other set of synchronization resources.
  • the NR-V2X system can configure up to 3 sets of synchronization resources in a synchronization period. For each set of synchronization resources, the time slot of each synchronization resource in a period is determined by the following 3 parameters:
  • the number of synchronization time slots supported in each set of synchronization resources at different subcarrier intervals in FR2 are:
  • Synchronization time slot offset (sl-TimeOffsetSSB): the time slot offset of the first synchronization resource in each set of synchronization resources within a synchronization period relative to the synchronization period boundary.
  • Time slot interval (sl-TimeInterval): the time slot interval between two adjacent synchronization resources in each set of synchronization resources within a synchronization cycle.
  • the terminal device may support channel access through listening (for example, LBT) to determine whether to use synchronization resources to send synchronization signals.
  • listening for example, LBT
  • each set of synchronization resources when 2 sets of synchronization resources are configured in a synchronization period, and each set of synchronization resources includes 4 synchronization time slots, the terminal device can detect each synchronization time slot through LBT. If a synchronization time slot is found to be unavailable, the terminal does not Synchronization signals are sent using this synchronization slot. Then, the synchronization resources configured according to the existing mechanism may not be sufficient. For example, 4 synchronization time slots should be occupied to send synchronization signals, but only 1 or 2 of them can be used to send synchronization signals through LBT. This will lead to a decrease in the synchronization performance of the sidelink, thereby affecting the data transmission of the sidelink and degrading the system performance.
  • this application proposes a sidelink transmission scheme.
  • the synchronization resource configured in the sidelink transmission includes N synchronization time slots, and the terminal device can perform channel access based on the synchronization resources.
  • the terminal device can perform channel access based on the synchronization resources.
  • at least part of the synchronization slots are occupied in the N synchronization slots of the synchronization resource to transmit the synchronization signal. That is to say, in the sidelink transmission scheme provided by this application, since the synchronization resources configured for the terminal device include an additional number, that is, redundant synchronization time slot resources, the terminal device can occupy N synchronization time slots.
  • Part or all of the synchronization time slots send synchronization signals, which helps terminal devices determine whether to use synchronization resources to send synchronization signals by listening (such as LBT), and helps support multiple terminal devices to send on one synchronization resource
  • the synchronization signal improves the reliability and completeness of the synchronization mechanism of the sidelink, helps to improve the data transmission performance of the sidelink, and improves the system performance.
  • FIG. 16 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 16, the method 200 may include at least part of the following content:
  • the terminal device determines a sidelink synchronization resource, where the synchronization resource includes N synchronization time slots, where N is a positive integer.
  • the terminal device occupies at least part of the synchronization time slots in the N synchronization time slots to send a synchronization signal.
  • the terminal device can occupy part or all of the synchronization time slots in the N synchronization time slots to send synchronization signals, thereby It is helpful for the terminal device to determine whether to use the synchronization resource to send the synchronization signal according to the channel access result, which in turn helps to support multiple terminal devices to send the synchronization signal on one synchronization resource, and improves the synchronization mechanism of the sidelink Reliability and completeness to improve system performance.
  • channel access may also be referred to as a channel access procedure (channel access procedure), for example, it may be a process of initiating channel access through channel sensing, or channel monitoring, or channel detection.
  • channel access may be a LBT procedure.
  • the terminal device occupies at least part of the synchronization time slots in the N synchronization time slots to send synchronization signals, which can also be expressed as: the terminal device
  • the terminal device As a result of performing LBT on the resources, at least part of the synchronization time slots are occupied in the N synchronization time slots to send synchronization signals.
  • the terminal device determines not to use the synchronization time slot to send the synchronization signal.
  • the channel access process includes one of the following:
  • the first type of channel access process the second type of channel access process, and the third type of channel access process; wherein,
  • the first type channel access procedure includes Type1 channel access
  • the second type channel access procedure includes Type2A channel access and/or Type2B channel access
  • the third type channel access procedure includes Type2C channel access.
  • the first type channel access process includes Type2A channel access
  • the second type channel access process includes Type2B channel access
  • the third type channel access process includes Type2C channel access.
  • the channel access procedure is the second type channel access procedure or the third type channel access procedure in the case that the synchronization resource is located in a shared COT.
  • the channel access procedure is the first type of channel access procedure when the synchronization resources are not located within the shared COT.
  • LBT also called channel detection
  • FBE Frame based equipment
  • the channel access mechanism of LBE includes a variety of different channel access schemes, such as Type1 channel access, Type2A channel access, Type2B channel access, and Type2C channel access.
  • Type1 channel access
  • the channel detection method of the communication device is a multi-slot channel detection based on random backoff of contention window size adjustment.
  • the number of detection time slots that need to perform channel detection is randomly generated according to the contention window, and the size of the contention window is determined according to the channel access priority class (CAPC) corresponding to the transmission service.
  • CAC channel access priority class
  • different channel access priorities may be included according to priorities of transmission services.
  • the above Table 1 is an example of channel access parameters corresponding to different channel access priorities. Wherein, the smaller the value of p is, the higher the channel access priority is.
  • the above Table 1 is used for Type1 channel access for uplink transmission of the terminal equipment.
  • Type2A channel access
  • the channel detection mode of the communication equipment is the channel detection of a single detection time slot with a fixed length of 25 microseconds.
  • the communication device can perform channel detection in the detection time slot of 25 microseconds before the transmission starts, and perform transmission after the channel detection succeeds.
  • Type2B channel access
  • the channel detection mode of the communication device is the channel detection of a single detection time slot with a fixed length of 16 microseconds. Specifically, under Type2B channel access, the communication device can perform channel detection within the detection time slot of 16 microseconds before the transmission starts, and perform transmission after the channel detection succeeds. Wherein, the gap length between the start position of the transmission and the end position of the previous transmission is 16 microseconds.
  • Type2C channel access
  • the communication device transmits without channel detection after the slot ends. Specifically, under Type2C channel access, the communication device can directly transmit, but the length of the gap between the start position of the transmission and the end position of the previous transmission is less than or equal to 16 microseconds. In addition, the length of the transmission does not exceed 584 microseconds.
  • the synchronization resource of the sidelink of the terminal device may be configured periodically. Further, within a synchronization cycle T milliseconds (ms), a set of synchronization resources may be configured, and each set of synchronization resources may include the above-mentioned N synchronization time slots (also referred to as synchronization time slot resources).
  • N synchronization time slots also referred to as synchronization time slot resources.
  • T and a are positive integers. Exemplarily, T may take a value of 20, 40, 80, 160, 320 ms, etc., and a may take a value of 1, 2, 3, 4, 5, etc., without limitation.
  • the N synchronization time slots in the embodiment of the present application increase the redundancy of synchronization time slot resources, that is, the terminal device can select the available synchronization time slot resources to send synchronization signals, which helps the terminal device to send a sufficient amount of synchronization signals when determining whether to use synchronization resources to send synchronization signals, thereby improving the synchronization performance of the sidelink.
  • the network device may configure sidelink synchronization resources for the terminal device, or configure the terminal device to transmit on at least some of the N synchronization time slots of the synchronization resource synchronization signal.
  • the network device may send configuration information to the terminal device for configuring a synchronization resource in a synchronization period of the terminal device, or the terminal device may transmit synchronization information on at least part of the N synchronization time slots of the synchronization resource.
  • the terminal device receives the configuration information, and according to the configuration information, determines the synchronization resource of the sidelink, or determines that the synchronization signal can be transmitted on at least part of the N synchronization time slots of the synchronization resource.
  • the above configuration information may also be used to configure the number of synchronization time slots supported by synchronization resources with different subcarrier intervals.
  • the terminal device determines the number of synchronization time slots supported by synchronization resources with different subcarrier intervals according to the configuration information, for example, it may be the above-mentioned N.
  • the value range of N is ⁇ 1-1024 ⁇ .
  • N may take one or more values within the value range through configuration, without limitation.
  • the number of synchronization time slots supported by synchronization resources with different subcarrier intervals is different.
  • the number of synchronization time slots supported in each set of synchronization resources at different subcarrier intervals in FR1 are:
  • the number of synchronization time slots supported in each set of synchronization resources at different subcarrier intervals in FR2 are:
  • the number of synchronization time slots supported in each set of synchronization resources at different subcarrier intervals in FR1 are:
  • the number of synchronization time slots supported in each set of synchronization resources at different subcarrier intervals in FR2 are:
  • the above configuration information may also be used to configure the number a of the synchronization resources included in the synchronization period of the sidelink of the terminal device.
  • the terminal device determines the number a of synchronization resources included in the synchronization period of the sidelink according to the configuration information.
  • the above configuration information may also be used to configure the duration T of the synchronization cycle of the sidelink of the terminal device.
  • the terminal device determines the duration T of the synchronization period of the sidelink according to the configuration information.
  • the above configuration information may also be used to configure the terminal device to occupy M synchronization time slots among the N synchronization time slots to send synchronization signals, where M is a positive integer less than or equal to N. That is to say, the N synchronization time slots may include (N-M) additional number, ie, redundant synchronization time slot resources.
  • the number of synchronization time slots actually occupied by the terminal device for sending synchronization signals may be less than or equal to M, this application does not limit this.
  • the terminal device determines that the number of available synchronization time slots in one set of synchronization resources is less than M through LBT, the synchronization signal may be sent based on the number of actually available synchronization time slots.
  • the network device can configure an additional number of synchronization resources of the terminal device, that is, redundant synchronization time slot resources, so that the terminal device can occupy M synchronization time slots in the N synchronization time slots to send synchronization Signal.
  • the terminal device when the terminal device is not configured with an M value, then the terminal device may use the N synchronization time slots in the synchronization resource to send synchronization information. In other words, at this time, the terminal device may default that N is the number of synchronization time slots that need to send synchronization signals.
  • the terminal device may be pre-configured by the protocol to configure the sidelink synchronization resources for the terminal device, or to configure at least part of the synchronization time slots that the terminal device can use in the N synchronization time slots of the synchronization resources transmit sync signal. This application does not limit this.
  • the protocol can also configure the number of synchronization time slots supported by the synchronization resources at different subcarrier intervals, the number of synchronization resources included in the synchronization period of the sidelink, the synchronization period At least one of the duration and the number M of synchronization signals that the terminal device occupies in the N synchronization time slots to send synchronization signals, which is not limited in this application.
  • step 220 may specifically be implemented in the following manner:
  • the terminal device determines whether to use the i-th synchronization time slot to send a synchronization signal according to the channel access result of the i-th synchronization time slot among the above-mentioned N synchronization time slots.
  • i is a positive integer less than or equal to N.
  • the synchronization time slot resources in the N synchronization time slots can independently perform channel access, that is, it can be determined whether to use the synchronization time slot resource according to the channel access result of a synchronization time slot resource.
  • Slot resources to send synchronization signals Exemplarily, before a terminal device uses a synchronization time slot resource, LBT is performed on the synchronization time slot resource first, and then it may be determined whether to use the synchronization time slot to send a synchronization signal according to a result of performing LBT on the synchronization time slot.
  • the LBT of the i-th synchronization time slot may be a long-time LBT or a short-time LBT, which is not limited.
  • the LBT process corresponding to each synchronization time slot resource is independent, the duration of the LBT process before each synchronization time slot can be the same or different, which is not limited in this application.
  • the terminal device determines to use the i-th synchronization time slot to send a synchronization signal; otherwise, the terminal device determines not to use the i-th synchronization time slot Synchronization signals are sent in i synchronization time slots.
  • the channel of the synchronization time slot is idle, or the channel energy is lower than the prediction threshold, it can be determined that the synchronization time slot is available.
  • the terminal device when the terminal device is configured to occupy M synchronization time slots in the N synchronization time slots to send synchronization signals, the terminal device can independently perform channel access to the synchronization time slots, for example LBT, determining at most M synchronization time slots in the N synchronization time slots to send synchronization signals.
  • FIG. 17 shows a specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • UE1 performs LBT before each synchronization time slot resource, and learns that the channel detection of the 1st, 3rd, and 5th synchronization time slots is successful, that is, the channels of the 1st, 3rd, and 5th synchronization time slots are available, and the channels of the 1st, 3rd, and 5th synchronization time slots are available.
  • FIG. 18 shows another specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • UE1 performs LBT before each synchronization time slot resource, and learns that the channel detection of the first and second synchronization time slots fails, that is, the channels of the first and second synchronization time slots are busy, and the channels of the third, fourth, and second synchronization time slots are busy.
  • the 5th, 6th synchronization time slot channels are successfully detected, that is, the 3rd, 4th, 5th, and 6th synchronization time slot channels are available, that is, the 3rd, 4th, 5th, and 6th synchronization time slot channels can be occupied to send synchronization signals.
  • the terminal device occupies M synchronization time slots among the above-mentioned N synchronization time slots to send synchronization signal, and after the terminal device sends synchronization signals in the M synchronization time slots, the terminal device may determine not to perform channel access in synchronization time slots other than the at least M synchronization time slots on the synchronization resource, and not use Synchronization slots other than the at least M synchronization slots transmit synchronization signals.
  • the terminal device After the terminal device determines that a sufficient amount of synchronization signals can be sent within the synchronization resource of a synchronization cycle, the terminal device will not perform LBT on other synchronization time slots of the synchronization resource, nor use other synchronization time slots to send synchronization signals. Signal.
  • FIG. 19 shows another specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • UE1 performs LBT before the synchronization time slot resources, and when it knows that the channel detection of the 1st, 2nd, 3rd, and 4th synchronization time slots is successful, that is, the channels of the 1st, 2nd, 3rd, and 4th synchronization time slots Available, that is, the channels of the 1st, 2nd, 3rd, and 4th synchronization time slots can be occupied to send synchronization signals.
  • UE1 does not perform LBT for the remaining two synchronization time slots, that is, the fifth and sixth synchronization time slots, and does not use them to send synchronization signals.
  • the terminal device when the terminal device is not configured to occupy M synchronization time slots in the N synchronization time slots to send synchronization signals, the terminal device can independently perform channel access to the synchronization time slots, such as LBT, In the N synchronization time slots, at most N synchronization time slots are determined to send synchronization signals, that is, the terminal device can occupy all synchronization time slots in the synchronization resource to send synchronization signals by default.
  • the synchronization time slots such as LBT
  • FIG. 20 shows a specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • UE1 performs LBT before each synchronization time slot resource, and knows that the channel detection of the 1st to 8th synchronization time slots is successful, that is, it can occupy the channels of the 1st to 8th synchronization time slots to send synchronization signals. That is to say, UE1 occupies all available synchronization time slots to send synchronization signals.
  • the terminal device can perform LBT based on the number of actually available synchronization time slots. Sending of synchronization signals.
  • the embodiment of the present application can determine whether to use the synchronization time slot to send the synchronization signal by independently performing channel access to the synchronization time slot, such as LBT, which can help the terminal device to flexibly use the synchronization time slot resource to send the synchronization signal, In turn, it helps to improve the reliability and completeness of the sidelink synchronization mechanism and improve system performance.
  • the synchronization time slot such as LBT
  • step 220 may specifically be implemented in the following manner:
  • the terminal device determines whether to use the i-th synchronization time slot and the resources located after the i-th synchronization time slot in the synchronization resources according to the channel access result of the i-th synchronization time slot among the above-mentioned N synchronization time slots.
  • Synchronization signals are sent in L synchronization time slots.
  • i and L are positive integers less than or equal to N, and (i+L) ⁇ N.
  • the channel access between the N synchronization time slots may be interrelated, that is, it may be determined whether to use the synchronization time slot according to the channel access result of a synchronization time slot resource resources, and other synchronization slot resources to send synchronization signals.
  • the terminal device performs LBT on a synchronization time slot resource, then it can determine whether to use the synchronization time slot according to the result of performing LBT on the synchronization time slot, and the L synchronization time slots after the synchronization time slot. Send sync signal.
  • the LBT of the i-th synchronization time slot may be a long-time LBT or a short-time LBT, which is not limited.
  • the long-time LBT and the short-time LBT reference may be made to the description above, and details are not repeated here.
  • L (M-1).
  • M can refer to the description above, and will not be repeated here. That is to say, the value of L may be less than or equal to (M-1), so that the terminal device can send synchronization signals on at most M synchronization time slots of the synchronization resources.
  • L is equal to the number of synchronization time slots in the synchronization resource after the ith synchronization time slot, that is, the terminal device can at most use the All synchronization slots following the slot are occupied to transmit synchronization signals. That is to say, here the terminal device can send synchronization signals in at most N synchronization time slots of the synchronization resources by default.
  • L may be preset, for example, defined by a protocol, or preconfigured by a network device, which is not limited.
  • L can take on values 1, 2, 3, 4, etc.
  • the terminal device determines to use the i-th synchronization time slot and the i-th synchronization time slot in the above-mentioned synchronization resources. Synchronization signals are sent in L synchronization time slots after the time slot. Otherwise, the terminal device determines not to use the i-th synchronization time slot to send the synchronization signal.
  • the interval between adjacent time slots among the above N synchronization time slots is less than d microseconds, where d is a positive integer.
  • d is a positive integer.
  • the value range of d is ⁇ 0, 1-10 5 ⁇ . That is to say, when the interval between adjacent time slots in a synchronization time slot is smaller than the preset value, the L synchronization time slots in the synchronization resources after the i-th synchronization time slot may not be monitored, that is, they may be directly occupied The L synchronization time slots send synchronization signals.
  • the terminal device may use the (i+1)-th synchronization time slot among the N synchronization time slots (ie As a result of the channel access of the synchronization time slot after the i-th synchronization time slot), determine whether to use the (i+1)-th synchronization time slot and the synchronization resources located after the (i+1)-th synchronization time slot Synchronization time slots for sending synchronization signals.
  • this process is the same as "according to the channel access result of the i-th synchronization time slot in the N synchronization time slots, determine whether to use the i-th synchronization time slot and the i-th synchronization time slot in the synchronization resources.
  • the process of sending a synchronization signal in the synchronization time slot after the time slot is similar, and can refer to the description above, and will not be repeated here.
  • the terminal device when the terminal device is configured to occupy M synchronization time slots in the N synchronization time slots to send synchronization signals, the terminal device can access channels between synchronization time slots, such as LBT association , determine at most M synchronization time slots among the N synchronization time slots to send synchronization signals.
  • synchronization time slots such as LBT association
  • FIG. 21 shows a specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • UE1 performs LBT before the resource of the first synchronization time slot, and knows that the channel detection of the first synchronization time slot is successful, that is, it can occupy the channels of the first to fourth synchronization time slots to send synchronization signals.
  • UE1 does not perform LBT for the remaining 5th and 6th synchronization time slots, nor occupy them to send synchronization signals.
  • UE1 may occupy the second to fifth synchronization time slots to send synchronization signals.
  • UE1 may occupy the third to sixth synchronization time slots to send synchronization signals, and so on.
  • the terminal device when the terminal device is not configured to occupy M synchronization time slots in the N synchronization time slots to send synchronization signals, the terminal device can access channels between synchronization time slots, such as LBT Associating, among the N synchronization time slots, at most N synchronization time slots are determined to send synchronization signals, that is, the terminal device can occupy all synchronization time slots in the synchronization resources to send synchronization signals by default.
  • synchronization time slots such as LBT Associating, among the N synchronization time slots, at most N synchronization time slots are determined to send synchronization signals, that is, the terminal device can occupy all synchronization time slots in the synchronization resources to send synchronization signals by default.
  • FIG. 22 shows a specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • UE1 performs LBT before the first and second synchronization time slot resources, and learns that the first and second synchronization time slot channel detection fails, and performs LBT before the third synchronization time slot resource, Knowing that the channel detection of the third synchronization time slot is successful, the synchronization time slots after the third synchronization time slot (that is, the 3rd to 8th synchronization time slots) in the synchronization resource may not perform LBT, and directly use the transmission synchronization Signal.
  • UE1 may occupy the first to eighth synchronization time slots to send synchronization signals.
  • UE1 may occupy the second to eighth synchronization time slots to send synchronization signals, and so on.
  • the terminal device determines whether to use the ith synchronization time slot and the Sending the synchronization signal in the L synchronization time slots after the i-th synchronization time slot in the synchronization resources may specifically include:
  • the channel access result obtained by using the first channel access method indicates that the channel of the i-th synchronization time slot is available, determine to use the i-th synchronization time slot to send the synchronization signal;
  • the first channel access method and the second channel access method can be combined to determine whether to use the i-th synchronization time slot and the subsequent L synchronization time slots.
  • L synchronization time slots are used to send synchronization signals.
  • the second channel access method can be used to perform the i-th synchronization time slot in the synchronization resources Channel access is performed in subsequent synchronization time slots, and it is determined whether to use synchronization time slots after the ith synchronization time slot to send synchronization signals.
  • the interval between adjacent time slots in the above N synchronization time slots is not limited.
  • the interval between adjacent time slots in the above N synchronization time slots may be greater than d microseconds, or smaller than d microseconds.
  • the above-mentioned first channel access method includes the first listen-before-transmit LBT method
  • the second channel access method includes the second LBT method, wherein the duration of the first LBT method greater than the duration of the second LBT.
  • the first LBT may be a long-time LBT
  • the second LBT may be a short-time LBT.
  • the channel access result obtained by using the first channel access method indicates that the channel of the i-th synchronization time slot is busy (that is, the channel access of the i-th synchronization time slot fails) In this case, it is determined not to use the ith synchronization time slot to send the synchronization signal. At this time, it may be determined whether to use the (i+1)th synchronization time slot and the Synchronization signals are sent in synchronization time slots after the (i+1)th synchronization time slot in the synchronization resources.
  • the process here is the same as "according to the result of channel access to the i-th synchronization time slot, determine whether to use the i-th synchronization time slot and the synchronization time slot after the i-th synchronization time slot in the synchronization resources to transmit Synchronization signal" process is similar, you can refer to the above description, no more details.
  • the above "according to the result of channel access to the (i+j)th synchronization time slot in the N synchronization time slots using the second channel access method, determine whether to use the Sending the synchronization signal in the (i+j)th synchronization time slot" may specifically include:
  • the channel access result obtained by using the second channel access method indicates that the channel of the (i+j)th synchronization time slot is available, determine to use the (i+j)th synchronization time slot Send the synchronization signal in the slot; otherwise
  • the terminal device determines not to use the (i+j)th synchronization time slot to send the synchronization signal.
  • the channel access result obtained by using the first channel access method indicates that the channel of the ith synchronization time slot is available, and the ith synchronization time slot in the synchronization resources is checked by using the second channel access method
  • the channel access result indicates that the channel of the synchronization time slot after the i-th synchronization time slot is available, then it can be determined to use the synchronization time slot after the i-th synchronization time slot. Time slots to send synchronization signals.
  • the terminal device does not use the (i+j)th synchronization time slot to send a synchronization signal.
  • the channel access result obtained by using the second channel access method indicates that the channel of the (i+j)th synchronization time slot is busy (that is, the channel access fails)
  • the process here is the same as "according to the result of channel access to the i-th synchronization time slot, determine whether to use the i-th synchronization time slot and the synchronization time slot after the i-th synchronization time slot in the synchronization resources to transmit Synchronization signal" process is similar, you can refer to the above description, no more details.
  • the terminal device when the terminal device is configured to occupy M synchronization time slots in the N synchronization time slots to send synchronization signals, the terminal device can access the channels between the synchronization time slots, for example LBT may further include long-time LBT and short-time LBT association, and at most M synchronization time slots are determined in the N synchronization time slots to send synchronization signals.
  • LBT may further include long-time LBT and short-time LBT association
  • FIG. 23 shows a specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • UE1 succeeds in long-term LBT before the first synchronization time slot resource, and succeeds in short-time LBT in the subsequent 2nd to 4th synchronization time slot resources, then it can occupy the 1st to 4th synchronization time slot resources. 4 synchronization slot channels to send synchronization signals.
  • UE1 does not perform LBT for the remaining 5th and 6th synchronization time slots, nor occupy them to send synchronization signals.
  • UE1 can perform For short-time LBT, if all short-time LBTs are successful, UE1 can use the 2nd to 5th synchronization time slots to send synchronization signals.
  • UE1 can perform short-time LBT on the 4th to 6th synchronization time slots, If the short-term LBT is successful, UE1 can use the 3rd to 6th synchronization time slots to send synchronization signals, and so on.
  • FIG. 24 shows another specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • UE1 if UE1 succeeds in performing long-term LBT before the resource of the first synchronization time slot, UE1 can occupy the channel of the first synchronization time slot to send a synchronization signal, and perform LBT in the second synchronization time slot. Short-term LBT.
  • UE1 can continue to perform long-term LBT in the third synchronization slot, and if the long-term LBT succeeds in the third synchronization slot, then UE1 can occupy the third synchronization time Slot channel to send synchronization signal, and perform short-time LBT in the 4th synchronization time slot.
  • UE1 succeeds in short-time LBT in the 4th and 5th synchronization time slots, then UE1 can use the 4th and 5th synchronization time slots to send synchronization signals.
  • UE1 does not perform LBT for the remaining 6th synchronization time slot, and does not use it to send synchronization signals.
  • UE1 if UE1 fails the long-term LBT on the first synchronization time slot and succeeds on the second synchronization time slot, then UE1 can 24 way to send the synchronization signal. For another example, if UE1 fails long-term LBT on the 1st and 2nd synchronization time slots, and succeeds on long-term LBT on the 3rd synchronization time slot, then UE1 can follow the method in Figure 24 on the 3rd to 6th synchronization time slots Send a synchronization signal.
  • UE1 fails the long-term LBT on the 1st, 2nd, 3rd, and 4th synchronization time slots, and succeeds in the long-term LBT on the 5th synchronization time slot, then UE1 can follow the steps in Figure 24 on the 5th to 6th synchronization time slots.
  • the way to send the synchronization signal and so on.
  • the terminal device when the terminal device is not configured to occupy M synchronization time slots in the N synchronization time slots to send synchronization signals, the terminal device can access channels between synchronization time slots, such as LBT , can further include long-time LBT and short-time LBT association, determine at most N synchronization time slots in the N synchronization time slots to send synchronization signals, that is, the terminal device can occupy all synchronization time slots in the synchronization resources to send synchronization signal.
  • synchronization time slots such as LBT
  • LBT long-time LBT and short-time LBT association
  • FIG. 25 shows a specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • UE1 fails to perform long-term LBT before the first and second synchronization time slot resources, and succeeds in performing long-term LBT before the third synchronization time slot resource, then the UE1 within the synchronization resource
  • the 4th synchronization time slot and subsequent synchronization time slots (that is, the 4th to 8th synchronization time slots) can perform short-time LBT. If the short-time LBT is also successful in the subsequent 4th to 8th synchronization time slots, then the channels of the 3rd to 8th synchronization time slots can be occupied to send synchronization signals.
  • UE1 may perform short-time LBT on the second to eighth synchronization time slots. If the short-time LBT in the subsequent 2nd to 8th synchronization time slots is also successful, then the 1st to 8th synchronization time slots can be occupied to send synchronization signals, that is, the synchronization signal is sent in the manner shown in FIG. 25 . For another example, if the long-term LBT fails on the first synchronization time slot and succeeds on the second synchronization time slot, UE1 can send the synchronization signal in the manner shown in FIG. 25 , and so on.
  • the embodiment of the present application can determine whether to use the synchronization time slot to send the synchronization signal by associating the channel access between the synchronization time slots, such as LBT, or further such as long-time LBT and short-time LBT, which can help
  • the terminal equipment flexibly uses the synchronization time slot resources to send synchronization signals, which helps to improve the reliability and completeness of the sidelink synchronization mechanism and system performance.
  • the above N synchronization time slots may include a first synchronization time slot and a second synchronization time slot.
  • step 220 can specifically be realized in the following ways:
  • the terminal device determines whether to use the first synchronization time slot to send the synchronization signal according to the channel access result of the first synchronization time slot; the terminal device determines that the first synchronization time slot does not meet the requirements for sending the synchronization signal If required, determine to use the second synchronization time slot to send the synchronization signal.
  • the first synchronization time slot does not meet the requirements for sending the synchronization signal, which may include the situation that none of the synchronization time slots in the first synchronization time slot are found to be available through LBT, or includes only the first synchronization time slot being available through LBT.
  • Part of the synchronization time slots in the time slots is used to send synchronization signals, but using this part of the synchronization time slots is not enough to meet the requirements of the terminal equipment for sending synchronization signals.
  • it may be determined whether to use the X synchronization time slots to send synchronization signals according to the channel access results on the X synchronization time slots; When , some or all (for example, one or more) synchronization time slots can be selected in the Y synchronization time slots to send the synchronization signal. That is to say, the second synchronization time slot can be used as a backup synchronization time slot to send synchronization signals.
  • the process of determining whether to use the first synchronization time slot to send a synchronization signal can refer to the description above, and will not be repeated here.
  • the synchronization signal is sent in a time slot.
  • LBT long-time LBT or short-time LBT
  • the above-mentioned second synchronization time slot can be directly used to send a synchronization signal without performing LBT, which is not limited in this application.
  • FIG. 26 shows a specific schematic diagram of sending a synchronization signal according to an embodiment of the present application.
  • UE1 fails to perform LBT before the 1st to 4th synchronization time slot resources, it may not perform LBT on the 5th and 6th synchronization time slots, but directly occupy and send synchronization signals.
  • a spare synchronization time slot can be set in the synchronization resource to directly send the synchronization signal when the synchronization time slots obtained through LBT that can be used to send the synchronization signal are not enough, Therefore, the requirement of the terminal equipment to send a sufficient amount of synchronization signals can be met, which in turn helps to improve the reliability and completeness of the sidelink synchronization mechanism and improve system performance.
  • FIG. 27 is a schematic flowchart of a wireless communication method 300 according to an embodiment of the present application. As shown in FIG. 27, the method 300 may include at least part of the following content:
  • the network device sends configuration information to the terminal device, where the configuration information is used to configure the terminal device to occupy at least some of the synchronization time slots in the N synchronization time slots of the synchronization resource to send synchronization signals, where N is a positive integer.
  • the value range of N is ⁇ 1,...,1024 ⁇ .
  • the N synchronization time slots include a first synchronization time slot and a second synchronization time slot
  • the second synchronization time slot is used for sending the synchronization signal when the first synchronization time slot does not meet the requirement of the terminal device for sending the synchronization signal.
  • the configuration information is also used to configure the number of synchronization time slots supported by the synchronization resources at different subcarrier intervals, the synchronization time slots included in the synchronization cycle of the sidelink At least one of the number of resources, the duration of the synchronization period, and the number M of synchronization signals that the terminal device occupies in the N synchronization time slots to send synchronization signals, where M is less than or equal to N positive integer of .
  • sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application.
  • the implementation of the examples constitutes no limitation.
  • Fig. 28 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 includes:
  • the processing unit 410 is configured to determine synchronization resources of the sidelink, where the synchronization resources include N synchronization time slots, where N is a positive integer.
  • the communication unit 420 is configured to occupy at least part of the synchronization time slots in the N synchronization time slots and send synchronization signals according to the result of channel access on the synchronization resources.
  • the communication unit 420 is specifically configured to:
  • the terminal device determines whether to use the i-th synchronization time slot to send the synchronization signal according to the channel access result of the i-th synchronization time slot in the N synchronization time slots, where i is less than or a positive integer equal to N.
  • the communication unit 420 is specifically configured to:
  • the terminal device determines to use the i-th synchronization time slot to send the synchronization signal; otherwise
  • the terminal device determines not to use the ith synchronization time slot to send the synchronization signal.
  • the communication unit 420 is specifically configured to:
  • the terminal device determines whether to use the i-th synchronization time slot and the synchronization resources located in the i-th synchronization time slot according to the channel access result of the i-th synchronization time slot in the N synchronization time slots.
  • the synchronization signal is sent in L synchronization time slots after the i synchronization time slots, where i and L are positive integers less than or equal to N, and (i+L) ⁇ N.
  • the communication unit 420 is specifically configured to:
  • the terminal device determines to use the i-th synchronization time slot and the L synchronization time slots to send the synchronization signal ;otherwise,
  • the terminal device determines not to use the ith synchronization time slot to send the synchronization signal.
  • the interval between adjacent time slots among the N synchronization time slots is less than dmicroseconds, where d is a positive integer.
  • the value range of d is ⁇ 0, 1-10 5 ⁇ .
  • the communication unit 420 is specifically configured to:
  • the channel access result obtained by using the first channel access method indicates that the channel of the i-th synchronization time slot is available, determine to use the i-th synchronization time slot to send the synchronization signal;
  • the communication unit 420 is specifically configured to:
  • the channel access result obtained by using the second channel access method indicates that the channel of the (i+j)th synchronization time slot is available, determine to use the (i+j)th synchronization time slot Send the synchronization signal in the slot; otherwise
  • the terminal device determines not to use the (i+j)th synchronization time slot to send the synchronization signal.
  • the first channel access method includes the first listen-before-talk LBT method
  • the second channel access method includes the second LBT method, wherein the first LBT method The duration of is longer than the duration of the second LBT.
  • L is equal to the synchronization time after the i-th synchronization time slot in the synchronization resource number of gaps;
  • M represents the number of synchronization time slots configured for the terminal device that can be used to send synchronization signals among the N synchronization time slots, and M is a positive integer less than or equal to N.
  • the communication unit 420 is specifically configured to:
  • the terminal device occupies M synchronization time slots among the N synchronization time slots to send a synchronization signal according to the result of channel access in at least M synchronization time slots on the synchronization resource;
  • the terminal device After the terminal device sends synchronization signals in the M synchronization time slots, the terminal device determines not to perform channel access in synchronization time slots other than the at least M synchronization time slots on the synchronization resource, and sending the synchronization signal without using synchronization slots other than the at least M synchronization slots;
  • M represents the number of synchronization time slots configured for the terminal device that can be used to send synchronization signals among the N synchronization time slots, and M is a positive integer less than or equal to N.
  • the N synchronization time slots include a first synchronization time slot and a second synchronization time slot
  • the communication unit 420 is specifically used for:
  • the terminal device determines whether to use the first synchronization time slot to send the synchronization signal according to the channel access result of the first synchronization time slot;
  • the terminal device determines to use the second synchronization time slot to send the synchronization signal when the first synchronization time slot does not meet the requirement for sending the synchronization signal.
  • the communication unit 420 is specifically configured to:
  • the channel access result obtained by performing channel access on the second synchronization time slot indicates that the channel of the second synchronization time slot is available, determine to use the second synchronization time slot to send the synchronization signal.
  • the value range of N is ⁇ 1,...,1024 ⁇ .
  • the communication unit 420 is specifically configured to:
  • Receive configuration information where the configuration information is used to configure the terminal device to occupy at least part of the synchronization time slots in the N synchronization time slots to send synchronization signals.
  • the configuration information is also used to configure the number of synchronization time slots supported by the synchronization resources at different subcarrier intervals, the synchronization time slots included in the synchronization cycle of the sidelink At least one of the number of resources, the duration of the synchronization cycle, and the number M of the number M of synchronization signals that the terminal equipment occupies in the N synchronization time slots to send synchronization signals, where M is a positive value less than or equal to N integer.
  • the number of synchronization time slots supported by the synchronization resources at different subcarrier intervals, the number of synchronization resources included in the synchronization period of the sidelink, the synchronization At least one of the duration of the cycle and the number M of synchronization signals sent by the terminal equipment in the N synchronization time slots is pre-configured by the protocol, where M is a positive integer less than or equal to N.
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • terminal device 400 may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 400 are respectively in order to realize the wireless
  • the corresponding processes of the terminal device in the communication method 200 are not repeated here.
  • Fig. 29 shows a schematic block diagram of a network device 500 according to an embodiment of the present application.
  • the network device 500 includes:
  • the communication unit 520 is used for the network device to send configuration information to the terminal device, the configuration information is used to configure the terminal device to occupy at least part of the synchronization time slots in the N synchronization time slots of the synchronization resource to send synchronization signals, where N is positive integer.
  • the network device may further include a processing unit 510, configured to determine the above configuration information.
  • the value range of N is ⁇ 1,...,1024 ⁇ .
  • the N synchronization time slots include a first synchronization time slot and a second synchronization time slot
  • the second synchronization time slot is used for sending the synchronization signal when the first synchronization time slot does not meet the requirement of the terminal device for sending the synchronization signal.
  • the configuration information is also used to configure the number of synchronization time slots supported by the synchronization resources at different subcarrier intervals, the synchronization time slots included in the synchronization cycle of the sidelink At least one of the number of resources, the duration of the synchronization period, and the number M of synchronization signals that the terminal device occupies in the N synchronization time slots to send synchronization signals, where M is less than or equal to N positive integer of .
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • the network device 500 may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 500 are respectively in order to realize the wireless
  • the corresponding flow of the network device in the communication method 300 is not repeated here.
  • FIG. 30 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application.
  • the communication device 600 shown in FIG. 30 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the communication device 600 may further include a memory 620 .
  • the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.
  • the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or Receive messages or data from other devices.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of antennas may be one or more.
  • the communication device 600 may specifically be the network device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, the Let me repeat.
  • the communication device 600 may specifically be the terminal device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. Let me repeat.
  • Fig. 31 is a schematic structural diagram of a device according to an embodiment of the present application.
  • the apparatus 700 shown in FIG. 31 includes a processor 710, and the processor 710 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the device 700 may further include a memory 720 .
  • the processor 710 can invoke and run a computer program from the memory 720, so as to implement the method in the embodiment of the present application.
  • the memory 720 may be an independent device independent of the processor 710 , or may be integrated in the processor 710 .
  • the device 700 may further include an input interface 730 .
  • the processor 710 can control the input interface 730 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.
  • the device 700 may further include an output interface 740 .
  • the processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.
  • the device can be applied to the network device in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network device in the methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.
  • the device can be applied to the terminal device in the embodiment of the present application, and the device can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here.
  • the device mentioned in the embodiment of the present application may also be a chip.
  • it may be a system-on-a-chip, a system-on-a-chip, a system-on-a-chip, or a system-on-a-chip.
  • Fig. 32 is a schematic block diagram of a communication system 1000 provided by an embodiment of the present application. As shown in FIG. 32 , the communication system 1000 includes a terminal device 1010 and a network device 1020 .
  • the terminal device 1010 can be used to realize the corresponding functions realized by the terminal device in the above method
  • the network device 1020 can be used to realize the corresponding functions realized by the network device in the above method. repeat.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • the volatile memory can be Random Access Memory (RAM), which acts as external cache memory.
  • RAM Static Random Access Memory
  • SRAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchlink DRAM, SLDRAM Direct Memory Bus Random Access Memory
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, I won't repeat them here.
  • the computer-readable storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, I won't repeat them here.
  • the embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For brevity, This will not be repeated here.
  • the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in the methods of the embodiments of the present application.
  • the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in the methods of the embodiments of the present application.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application, and when the computer program is run on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present application, For the sake of brevity, details are not repeated here.
  • the computer program can be applied to the terminal device in the embodiment of the present application.
  • the computer program executes the corresponding process implemented by the terminal device in each method of the embodiment of the present application, For the sake of brevity, details are not repeated here.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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Abstract

本申请实施例提供了一种无线通信的方法、终端设备和网络设备，该方法包括：终端设备确定侧行链路的同步资源，其中，该同步资源包括N个同步时隙；根据在该同步资源上进行信道接入的结果，在该N个同步时隙中占用至少部分同步时隙发送同步信号。本申请实施例在终端设备的同步资源中包括额外数量，即冗余的同步时隙资源，使得终端设备可以在N个同步时隙中占用部分或全部同步时隙发送同步信号，从而有助于实现终端设备根据信道接入的结果确定是否使用同步资源来发送同步信号，进而有助于支持多个终端设备在一个同步资源上发送同步信号，提升了侧行链路的同步机制的可靠性和完备性，提高系统性能。

Description

无线通信的方法、终端设备和网络设备 技术领域
本申请实施例涉及通信领域，并且更具体地，涉及一种无线通信的方法、终端设备和网络设备。
背景技术
在新空口-车辆到其他设备(New Radio-Vehicle to Everything，NR-V2X)中，侧行链路传输中的同步传输资源与侧行数据传输资源是时分复用(Time Division Multiplexing，TDM)的。并且，用于传输同步信号的同步资源不包括在用于侧行数据传输的资源池中。另外，终端需要在不同的时域资源上发送和接收侧行同步信号。通常，在每个同步周期内支持配置2套或3套同步资源，在每一套同步资源内包括多个传输机会，来发送或接收同步信号，以提高终端设备的检测性能。
在NR-V2X通信系统中，发送同步信号的终端有很多，因此在侧行链路传输中每个同步资源上可能有多个终端发送同步信号。此时，终端如何在同步资源上发送同步信号，是一个需要解决的问题。
发明内容
本申请实施例提供了一种无线通信的方法、终端设备和网络设备，支持多个终端设备在一个同步资源上发送同步信号，提升了侧行链路的同步机制的可靠性和完备性，提高系统性能。
第一方面，提供了一种无线通信的方法，该方法包括：
终端设备确定侧行链路的同步资源，其中，所述同步资源包括N个同步时隙，N为正整数；
所述终端设备根据在所述同步资源上进行信道接入的结果，在所述N个同步时隙中占用至少部分同步时隙发送同步信号。
第二方面，提供了一种无线通信的方法，该方法包括：
网络设备向终端设备发送配置信息，所述配置信息用于配置所述终端设备在同步资源的N个同步时隙中占用至少部分同步时隙发送同步信号，其中，N为正整数。
第三方面，提供了一种终端设备，用于执行上述第一方面中的方法。
具体地，该终端设备包括用于执行上述第一方面中的方法的功能模块。
第四方面，提供了一种网络设备，用于执行上述第二方面中的方法。
具体地，该网络设备包括用于执行上述第二方面中的方法的功能模块。
第五方面，提供了一种终端设备，包括处理器和存储器；其中，该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第一方面中的方法。
第六方面，提供了一种网络设备，包括处理器和存储器；其中，该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第二方面中的方法。
第七方面，提供了一种装置，用于实现上述第一方面中的方法。
具体地，该装置包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该装置的设备执行如上述第一方面中的方法。
第八方面，提供了一种装置，用于实现上述第二方面中的方法。
具体地，该装置包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该装置的设备执行如上述第二方面中的方法。
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，该计算机程序使得计算机执行上述第一方面中的方法，或第二方面的方法。
第十方面，提供了一种计算机程序产品，包括计算机程序指令，所述计算机程序指令使得计算机执行上述第一方面中的方法，或第二方面的方法。
第十一方面，提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面中的方法，或第二方面的方法。
通过上述技术方案，在终端设备的同步资源中包括额外数量，即冗余的同步时隙资源，使得终端设备可以在N个同步时隙中占用部分或全部同步时隙发送同步信号，从而有助于实现终端设备根据信道接入的结果确定是否使用同步资源来发送同步信号，进而有助于支持多个终端设备在一个同步资源上发送同步信号，提升了侧行链路的同步机制的可靠性和完备性，提高系统性能。
附图说明
图1是本申请实施例应用的一种通信系统架构的示意性图。
图2是本申请实施例应用的另一种通信系统架构的示意性图。
图3是本申请提供的一种网络覆盖范围内侧行通信的示意性图。
图4是本申请提供的一种部分网络覆盖侧行通信的示意性图。
图5是本申请提供的一种网络覆盖外侧行通信的示意性图。
图6是本申请提供的一种单播侧行通信的示意性图。
图7是本申请提供的一种组播侧行通信的示意性图。
图8是本申请提供的一种广播侧行通信的示意性图。
图9是本申请提供的一种基于侦听的资源选取的示意性图。
图10是本申请提供的一种信道占用的示意性图。
图11是本申请提供的一种基于FBE的信道接入方式的示意性图。
图12是本申请提供的一种信道接入类型切换的示意性图。
图13是本申请提供的一种同步资源的示意图。
图14是本申请提供的另一种同步资源的示意图。
图15是本申请提供的再一种同步资源的示意图。
图16是根据本申请实施例提供的一种无线通信的方法的示意性流程图。
图17是根据本申请实施例的发送同步信号的一个具体示意图。
图18是根据本申请实施例的发送同步信号的另一个具体示意图。
图19是根据本申请实施例的发送同步信号的另一个具体示意图。
图20是根据本申请实施例的发送同步信号的另一个具体示意图。
图21是根据本申请实施例的发送同步信号的另一个具体示意图。
图22是根据本申请实施例的发送同步信号的另一个具体示意图。
图23是根据本申请实施例的发送同步信号的另一个具体示意图。
图24是根据本申请实施例的发送同步信号的另一个具体示意图。
图25是根据本申请实施例的发送同步信号的另一个具体示意图。
图26是根据本申请实施例的发送同步信号的另一个具体示意图。
图27是根据本申请实施例提供的另一种无线通信的方法的示意性流程图。
图28是根据本申请实施例提供的一种终端设备的示意性框图。
图29是根据本申请实施例提供的一种网络设备的示意性框图。
图30是根据本申请实施例提供的一种通信设备的示意性框图。
图31是根据本申请实施例提供的一种装置的示意性框图。
图32是根据本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。针对本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例的技术方案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、先进的长期演进(Advanced long term evolution，LTE-A)系统、新空口(New Radio，NR)系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum，NR-U)系统、非地面通信网络(Non-Terrestrial Networks，NTN)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)、第五代通信(5th-Generation，5G)系统或其他通信系统等。
通常来说，传统的通信系统支持的连接数有限，也易于实现，然而，随着通信技术的发展，移动通信系统将不仅支持传统的通信，还将支持例如，设备到设备(Device to Device，D2D)通信，机器到机器(Machine to Machine，M2M)通信，机器类型通信(Machine Type Communication，MTC)，车辆间(Vehicle to Vehicle，V2V)通信，或车联网(Vehicle to everything，V2X)通信等，本申请实施例也可以应用于这些通信系统。
可选地，本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation，CA)场景，也可以应用于双连接(Dual Connectivity，DC)场景，还可以应用于独立(Standalone，SA)布网场景。
可选地，本申请实施例中的通信系统可以应用于非授权频谱，其中，非授权频谱也可以认为是共享频谱；或者，本申请实施例中的通信系统也可以应用于授权频谱，其中，授权频谱也可以认为是非 共享频谱。
本申请实施例结合网络设备和终端设备描述了各个实施例，其中，终端设备也可以称为用户设备(User Equipment，UE)、接入终端、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等。
终端设备可以是WLAN中的站点(STATION，ST)，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、个人数字助理(Personal Digital Assistant，PDA)设备、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、下一代通信系统例如NR网络中的终端设备，或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)网络中的终端设备等。
在本申请实施例中，终端设备可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。
在本申请实施例中，终端设备可以是手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备或智慧家庭(smart home)中的无线终端设备等。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
在本申请实施例中，网络设备可以是用于与移动设备通信的设备，网络设备可以是WLAN中的接入点(Access Point，AP)，GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB，NB)，还可以是LTE中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者中继站或接入点，或者车载设备、可穿戴设备以及NR网络中的网络设备或者基站(gNB)或者未来演进的PLMN网络中的网络设备或者NTN网络中的网络设备等。
作为示例而非限定，在本申请实施例中，网络设备可以具有移动特性，例如网络设备可以为移动的设备。可选地，网络设备可以为卫星、气球站。例如，卫星可以为低地球轨道(low earth orbit，LEO)卫星、中地球轨道(medium earth orbit，MEO)卫星、地球同步轨道(geostationary earth orbit，GEO)卫星、高椭圆轨道(High Elliptical Orbit，HEO)卫星等。可选地，网络设备还可以为设置在陆地、水域等位置的基站。
在本申请实施例中，网络设备可以为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信，该小区可以是网络设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(Small cell)对应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“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。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请的实施方式部分使用的术语仅用于对本申请的具体实施例进行解释，而非旨在限定本申请。本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。
应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。
在本申请实施例的描述中，术语“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。
本申请实施例中，“预定义”可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。
本申请实施例中，所述“协议”可以指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。
图1是本申请实施例适用的一种通信系统的示意图。车载终端(车载终端121和车载终端122)的传输资源是由基站110分配的，车载终端根据基站110分配的资源在侧行链路上进行数据的发送。具体地，基站110可以为终端分配单次传输的资源，也可以为终端分配半静态传输的资源。
图2是本申请实施例适用的另一种通信系统的示意图。车载终端(车载终端131和车载终端132)在侧行链路的资源上自主选取传输资源进行数据传输。可选地，车载终端可以随机选取传输资源，或者通过侦听的方式选取传输资源。
需要说明的是，在侧行通信中，根据进行通信的终端所处的网络覆盖情况，可以分为网络覆盖内侧行通信，如图3所示；部分网络覆盖侧行通信，如图4所示；及网络覆盖外侧行通信，如图5所示。
图3：在网络覆盖内侧行通信中，所有进行侧行通信的终端均处于同一基站的覆盖范围内，从而，上述终端均可以通过接收基站的配置信令，基于相同的侧行配置进行侧行通信。
图4：在部分网络覆盖侧行通信情况下，部分进行侧行通信的终端位于基站的覆盖范围内，这部分终端能够接收到基站的配置信令，而且根据基站的配置进行侧行通信。而位于网络覆盖范围外的终端，无法接收基站的配置信令，在这种情况下，网络覆盖范围外的终端将根据预配置(pre-configuration)信息及位于网络覆盖范围内的终端发送的物理侧行广播信道(Physical Sidelink Broadcast Channel，PSBCH)中携带的信息确定侧行配置，进行侧行通信。
图5：对于网络覆盖外侧行通信，所有进行侧行通信的终端均位于网络覆盖范围外，所有终端均根据预配置(pre-configuration)信息确定侧行配置进行侧行通信。
需要说明的是，设备到设备通信是基于终端到终端(Device to Device，D2D)的一种侧行链路(Sidelink，SL)传输技术，与传统的蜂窝系统中通信数据通过基站接收或者发送的方式不同，因此具有更高的频谱效率以及更低的传输时延。车联网系统采用终端到终端直接通信的方式，在3GPP定义了两种传输模式，分别记为：第一模式和第二模式。
第一模式：终端的传输资源是由基站分配的，终端根据基站分配的资源在侧行链路上进行数据的发送；基站可以为终端分配单次传输的资源，也可以为终端分配半静态传输的资源。如图3所示，终端位于网络覆盖范围内，网络为终端分配侧行传输使用的传输资源。
第二模式：终端在资源池中选取一个资源进行数据的传输。如图5所示，终端位于小区覆盖范围外，终端在预配置的资源池中自主选取传输资源进行侧行传输；或者，如图3所示，终端在网络配置的资源池中自主选取传输资源进行侧行传输。
在NR-V2X中，支持自动驾驶，因此对车辆之间数据交互提出了更高的要求，如更高的吞吐量、更低的时延、更高的可靠性、更大的覆盖范围、更灵活的资源分配等。
在LTE-V2X中，支持广播传输方式，在NR-V2X中，引入了单播和组播的传输方式。对于单播传输，其接收端终端只有一个终端，如图6所示，UE1、UE2之间进行单播传输；对于组播传输，其接收端是一个通信组内的所有终端，或者是在一定传输距离内的所有终端，如图7所示，UE1、UE2、UE3和UE4构成一个通信组，其中UE1发送数据，该组内的其他终端设备都是接收端终端；对于广播传输方式，其接收端是发送端终端周围的任意一个终端，如图8所示，UE1是发送端终端，其周围的其他终端，UE2-UE6都是接收端终端。
在侧行传输系统中引入了资源池，所谓资源池即传输资源的集合，无论是网络配置的传输资源还是终端自主选取的传输资源，都是资源池中的资源。可以通过预配置或网络配置的方式配置资源池，可以配置一个或多个资源池。资源池又分为发送资源池和接收资源池。发送资源池即该资源池中的传输资源用于发送侧行数据；接收资源池即终端在该资源池中的传输资源上接收侧行数据。
为便于更好的理解本申请实施例，对本申请相关的基于侦听的资源选取方法进行说明。
在LTE-V2X中，支持完全侦听或部分侦听，其中，完全侦听即终端可以侦听除了发送数据的时隙之外所有的时隙(或子帧)中其他终端发送的数据；而部分侦听(partial sensing)是为了终端节能，终端只需要侦听部分时隙(或子帧)，并且基于部分侦听的结果进行资源选取。
具体的，当高层没有配置部分侦听时，即默认采用完全侦听的方式进行资源选取。
当在时刻n有新的数据包到达，需要进行资源选取，终端会根据过去1秒中的侦听结果，在[n+T 1,n+T 2]ms内进行资源选取，其中T 1<＝4；T 2min(prio TX)≤T 2≤100,T 2min(prio TX)为高层配置的参数，并且T 1的选取应该大于终端的处理时延，T 2的选取需要在业务的时延要求范围内，例如，如果业务 的时延要求是50ms，则20≤T 2≤50，业务的时延要求是100ms，则20≤T 2≤100，如图9所示。
终端在选择窗内进行资源选取的过程如下：(具体的资源选取过程可以参照上面标准中描述的操作步骤，此处列出了几个主要的资源选取步骤)
1，终端将选择窗内所有可用的资源作为一个集合A。
2，如果终端在侦听窗内某些子帧没有侦听结果，则这些子帧在选择窗内对应的子帧上的资源被排除掉。
3，如果终端侦听窗内检测到物理侧行控制信道(Physical Sidelink Control Channel，PSCCH)，测量该PSCCH调度的物理侧行共享信道(Physical Sidelink Shared Channel，PSSCH)的参考信号接收功率(Reference Signal Received Power，RSRP)，如果测量的PSSCH-RSRP高于PSSCH-RSRP门限，并且根据该控制信息中预留信息确定的其预留的传输资源与本用户待发送的数据存在资源冲突，则用户在集合A中排除掉该资源。其中，PSSCH-RSRP门限的选取是由检测到的PSCCH中携带的优先级信息和终端待传输数据的优先级确定的。
4，如果集合A中剩余的资源个数小于总资源个数20％，终端会提升PSSCH-RSRP的门限3dB，并且重复步骤1-3，直到集合A中剩余的资源个数大于总资源数的20％。
5，终端对集合A中剩余的资源进行侧行接收信号强度指示(Sidelink Received Signal Strength Indicator，S-RSSI)检测，并且按照能量高低进行排序，把能量最低的20％(相对于集合A中的资源个数)资源放入集合B。
6，终端从集合B中等概率的选取一个资源进行数据传输。
相对于完全侦听的方式，基于部分侦听的终端在资源选择窗内选取Y个时隙，并且根据侦听结果判断Y个时隙上的资源是否可以作为候选资源，如果可以就放到集合S B中，如果集合S B中的元素个数大于等于Y个时隙上总资源数的20％，将S B上报给高层。
为便于更好的理解本申请实施例，对本申请相关的先侦听后传输(Listen Before Talk，LBT)技术进行说明。
非授权频谱是国家和地区划分的可用于无线电设备通信的频谱，该频谱通常被认为是共享频谱，即不同通信系统中的通信设备只要满足国家或地区在该频谱上设置的法规要求，就可以使用该频谱，不需要向政府申请专有的频谱授权。
为了让使用非授权频谱进行无线通信的各个通信系统在该频谱上能够友好共存，一些国家或地区规定了使用非授权频谱必须满足的法规要求。例如，通信设备遵循“LBT”原则，即通信设备在非授权频谱的信道上进行信号发送前，需要先进行信道侦听，只有当信道侦听结果为信道空闲时，该通信设备才能进行信号发送；如果通信设备在非授权频谱的信道上的信道侦听结果为信道忙，该通信设备不能进行信号发送。为了保证公平性，在一次传输中，通信设备使用非授权频谱的信道进行信号传输的时长不能超过最大信道占用时间(Maximum Channel Occupancy Time，MCOT)。
共享频谱上传输的基本概念：
最大信道占用时间(MCOT)：指在共享频谱的信道上信道检测(channel sensing)成功后允许使用该信道进行信号传输的最大时间长度。
信道占用时间(Channel Occupancy Time，COT)：指在共享频谱的信道上信道检测成功后使用该信道进行信号传输的时间长度，也可以认为是在共享频谱的信道上信道检测成功后占用该信道的时间长度。其中，该时间长度内信号占用信道可以是连续的或不连续的，该时间长度包括发起信道占用的设备和共享信道占用的设备进行信号传输的总时间。
网络设备的信道占用时间(gNB/eNB-initiated COT)：也称为网络设备发起的COT，指网络设备在共享频谱的信道上信道检测成功后获得的一次信道占用时间。网络设备发起的COT内除了可以用于网络设备进行传输，也可以在满足一定条件下用于终端设备进行传输。网络设备的COT用于终端设备进行传输，也称为终端设备共享该COT进行传输。
终端设备的信道占用时间(UE-initiated COT)：也称为终端设备发起的COT，指终端设备在共享频谱的信道上信道检测成功后获得的一次信道占用时间。终端设备发起的COT内除了可以用于终端设备进行传输，也可以在满足一定条件下用于网络设备进行传输。
下行传输机会(Downlink transmission burst)：网络设备进行的一组下行传输(即包括一个或多个下行传输)，该组下行传输为连续传输(即多个下行传输之间没有空隙)，或该组下行传输中有空隙但空隙小于或等于16μs。如果网络设备进行的两个下行传输之间的空隙大于16μs，那么认为该两个下行传输属于两次下行传输机会。
上行传输机会(Uplink transmission burst)：一个终端设备进行的一组上行传输(即包括一个或多个上行传输)，该组上行传输为连续传输(即多个上行传输之间没有空隙)，或该组上行传输中有 空隙但空隙小于或等于16μs。如果该终端设备进行的两个上行传输之间的空隙大于16μs，那么认为该两个上行传输属于两次上行传输机会。
信道检测成功：也称为信道检测空闲。例如对信道进行的检测时隙内的能量检测低于能量检测门限。
信道检测失败：也称为信道检测忙碌。例如对信道进行的检测时隙内的能量检测高于或等于能量检测门限。
信道接入类型(Channel Access Type，CAT或Cat)：包括类型(Type)1信道接入类型或Type 2信道接入类型。其中，Type 1信道接入类型相当于Cat-4 LBT，Type 2信道接入类型相当于25μs的Cat-2 LBT。
在一些实施例中，当网络设备发起COT后，可以将该COT内的资源用于UE进行上行传输。在网络设备的COT内发生的上行传输机会，如果该上行传输机会的起始位置和下行传输机会的结束位置之间的空隙小于16μs，UE可以立即进行该上行传输(或者说Cat-1 LBT)；如果在该网络设备的COT内，该上行(uplink，UL)传输机会后面没有下行(downlink，DL)传输机会，UE在传输前可以进行Cat-2 LBT；如果在该网络设备的COT内，任意两次相邻的传输之间的空隙小于或等于25μs，UE可以进行Cat-2 LBT。图10给出了示例。
其中，Cat-1 LBT可以指通信设备在空隙结束后不做信道检测而进行传输；Cat-2 LBT可以指通信设备做单时隙信道检测，具体地，Cat-2 LBT可以包括25微秒的单时隙信道检测和16微秒的单时隙信道检测。在网络设备的COT内发生的上行传输机会，如果该上行传输机会的起始位置和下行传输机会的结束位置之间的空隙为16μs，UE可以在该上行传输前进行16μs的Cat-2 LBT；如果该上行传输机会的起始位置和下行传输机会的结束位置之间的空隙为25μs，UE可以在该上行传输前进行25μs的Cat-2 LBT。网络设备可以来保证该上行传输机会的起始位置和下行传输机会的结束位置之间的空隙的大小，并将该空隙大小信息或对应的LBT方式通知给终端设备。
应理解，网络设备获得上述信道占用时间的方式可以是基于负载的设备(Load based equipment，LBE)的信道接入方式，即通信设备可以在业务到达后进行非授权频谱上的LBT，并在LBT成功后开始信号的发送；也可以是基于帧结构的设备(Frame based equipment，FBE)的信道接入方式，即通信设备周期性地进行非授权频谱上的LBT。
如果是基于LBE的信道接入方式，网络设备可以通过Cat-4 LBT来获得信道占用时间。Cat-4 LBT可以指通信设备的信道检测方式为基于竞争窗口大小调整的随机回退的多时隙信道检测。具体地，Cat-4 LBT根据传输业务的优先级可以包括不同的信道接入优先级。
如果是基于FBE的信道接入方式，如图11所示，在该方式中，帧结构是周期出现的，在一个帧结构内包括固定帧周期(长度不超过200ms)、信道占用时间(长度不超过固定帧周期的95％)、空闲时间(长度至少为信道占用时间的5％，最小值为100us，且位于固定帧周期的尾部)，此外，还会进行信道空闲检测(Clear Channel Assessment，CCA)。网络设备在空隙时间内对非授权频谱做LBT(例如可以是单时隙信道检测)，如果LBT成功，下一个固定帧周期内的信道占用时间可以用于传输信号；如果LBT失败，下一个固定帧周期内的信道占用时间不能用于传输信号。或者说，通信设备可以用于业务发送的信道资源是周期性出现的。
为便于更好的理解本申请实施例，对长期演进的授权辅助接入(Long Term Evolution Licensed-Assisted Access，LTE-LAA)系统中的信道接入类型的指示进行说明。
在LTE-LAA系统中，当终端设备被调度进行物理上行共享信道(Physical Uplink Shared Channel，PUSCH)传输时，网络设备会通过携带上行授权(UL grant)的下行控制信息(Downlink Control Information，DCI)来指示该PUSCH对应的信道接入类型和信道接入优先级。
信道接入类型(Channel Access Type，CAT)：1比特，用于指示Type 1信道接入类型或Type 2信道接入类型。其中，Type 1信道接入类型相当于Cat-4 LBT，Type 2信道接入类型相当于25μs的Cat-2 LBT。网络设备指示信道接入类型的原则是，如果待传输PUSCH属于网络设备的COT内，指示Cat-2 LBT，否则，指示Cat-4 LBT。
信道接入优先级(Channel Access Priority Class，CAPC)：2比特，当信道接入类型为Type 1信道接入类型时，该2比特用于从下表1中确定对应的信道接入参数。其中表1为Cat-4 LBT下不同信道接入优先级对应的信道接入参数，p取值越小，信道接入优先级越高。
表1
信道接入优先级(p) m p CW min,p CW max,p T mcot,p 允许的CW p取值
1 2 3 7 2ms {3,7}
2 2 7 15 4ms {7,15}
3 3 15 1023 6或10ms {15,31,63,127,255,511,1023}
4 7 15 1023 6或10ms {15,31,63,127,255,511,1023}
需要说明的是，在上述表1中，mp是指信道接入优先级p对应的回退时隙个数，CWp是指信道接入优先级p对应的竞争窗口大小，CWmin,p是指信道接入优先级p对应的CWp取值的最小值，CWmax,p是指信道接入优先级p对应的CWp取值的最大值，Tmcot,p是指信道接入优先级p对应的信道最大占用时间长度。
还需要说明的是，在网络设备的信道占用时间内，只允许有一个上下行转换点。另外，在终端设备待传输的PUSCH对应的信道接入类型被指示为Type 1信道接入类型的情况下，如果该终端设备接收网络设备发送的公共指示信息，根据该公共指示信息确定网络设备的信道占用时间共享给上行传输的资源，并确定该待传输的PUSCH(即第一物理下行控制信道(Physical Downlink Control Channel，PDCCH)调度的第一PUSCH)属于该网络设备共享的信道占用时间内，那么该终端设备可以将该PUSCH对应的Type 1信道接入类型切换为Type 2信道接入类型。如图12所示。
为便于更好的理解本申请实施例，对NR-U系统中的信道接入类型的指示进行说明。
和LTE-LAA系统类似，在NR-U系统中，当终端设备被调度进行PUSCH传输时，网络设备也可以通过携带上行授权(UL grant)的下行控制信息DCI来指示该PUSCH对应的信道接入类型和信道接入优先级。
和LTE-LAA不同的是，在NR-U系统中，需要指示的信道接入类型可能包括Cat-1 LBT，Cat-2 LBT，Cat-4 LBT，其中，Cat-2 LBT包括25μs的Cat-2 LBT和16μs的Cat-2 LBT。另外，NR-U系统中网络设备的信道占用时间内可能出现大于一个的上下行切换点。
为便于更好的理解本申请实施例，对本申请相关的侧行链路的同步机制进行说明。
由于半双工的限制，终端在一个载波上发送信号时不能同时在该载波上接收信号。为了避免终端在发送侧行同步信号时无法接收其他终端发送的侧行数据，导致侧行数据丢失，在侧行链路传输中，同步传输资源与侧行数据传输资源是时分复用TDM的，即不支持侧行同步信号和侧行数据FDM的方式复用。进一步的，在确定侧行数据传输的资源池时，将同步信号所在的子帧或时隙从可用时域资源中排除，即同步资源不包括在资源池中。
另外，也是由于半双工的限制，终端需要在不同的时域资源上发送和接收侧行同步信号。因此，在LTE-V2X中每个同步周期内需要2个或3个子帧作为同步资源，其中，引入第3个同步资源主要用于以全球导航卫星系统(Global Navigation Satellite System，GNSS)作为同步源的终端发送同步信号。
如图13，LTE-V2X系统的同步资源的周期为160ms，在每个同步周期内包括2个同步子帧，当终端在同步资源1上获取同步信息时，在同步资源2上发送同步信号；同理，当终端在同步资源2上获取同步信息时，可以在同步资源1上发送同步信号。
由于在一个同步周期内只有2个或3个子帧用于传输同步信号，而发送同步信号的终端有很多，因此在每个同步资源上都有多个终端发送同步信号。不同的终端发送的同步信号的优先级可能不同。当终端在该同步资源上检测同步信号时，会检测到不同优先等级的同步信号，终端根据优先级的顺序从多个候选同步源中选取同步源。
如图14，NR-V2X系统中同步资源的设计结合了NR Uu和LTE-V2X系统的设计。在NR Uu系统中，同步资源的周期也是160ms，在一个周期内包括多个同步信号块(Synchronization Signal Block，SSB)传输机会。这主要是考虑到在FR2时，需要使用不同的波束分别传输SSB，以实现对小区的全覆盖。在LTE-V2X系统中，每个同步周期内需要2个或3个同步子帧以克服半双工的影响。因此，在NR-V2X系统中，在每个同步周期内支持配置2套或3套同步资源，在每一套同步资源内包括多个传输机会，多个传输机会可以为终端提高检测性能。R16NR-V2X中不支持基于波束的侧行传输。
现有的V2X同步资源方案如图15所示，在NR-V2X系统中，在每个同步周期160ms内配置了2套同步资源，在每套同步资源内配置4个同步时隙，发送端可以在4个时隙上分别发送同步信号。当终端在某个同步时隙上检测到同步信号，根据与该同步信号同时传输的PSBCH中携带的直接帧号 (Direct Frame Number,DFN)和时隙编号可以确定该同步时隙属于第一套同步资源还是第二套同步资源，终端在另一套同步资源的4个时隙上分别发送同步信号。
NR-V2X系统中同步资源的周期也是160ms。由于NR-V2X支持不同的子载波间隔，因此，在一个同步周期内包括的时隙个数为160*2 μ，其中μ＝0，1，2，3分别对应于子载波间隔15kHz，30kHz，60kHz和120kHz，对应的时隙间隔分别为1ms，0.5ms，0.25ms，0.125ms。NR-V2X系统在一个同步周期内最多可以配置3套同步资源，对于每一套同步资源，通过下面的3个参数确定一个周期内每个同步资源所在的时隙：
1)周期内同步时隙个数(sl-NumSSB-WithinPeriod)：一个同步周期内每套同步资源包括的同步时隙的个数。具体的，在FR1中不同子载波间隔时每套同步资源内支持的同步时隙的个数分别为：
15kHz SCS：{1}
30kHz SCS：{1,2}
30kHz SCS：{1,2,4}
在FR2中不同子载波间隔时每套同步资源内支持的同步时隙的个数分别为：
60kHz SCS：{1,2,4,8,16,32}
120kHz SCS：{1,2,4,8,16,32,64}
2)同步时隙偏移(sl-TimeOffsetSSB)：一个同步周期内每套同步资源中的第一个同步资源相对于同步周期边界的时隙偏移量。
3)时隙间隔(sl-TimeInterval)：一个同步周期内每套同步资源中相邻两个同步资源的时隙间隔。
为便于更好的理解本申请实施例，对本申请相关的现有技术及存在的问题进行说明。
在NR-V2X系统的侧行链路传输中，发送同步信号的终端可能有很多，在侧行链路传输中的每个同步资源上可能有多个终端发送同步信号。此时，作为多个终端在同步资源上发送同步信号的一种方式，终端设备可以支持通过侦听(例如LBT)进行信道接入的方式来确定是否使用同步资源来发送同步信号。当终端通过信道接入确定同步资源不可用时，终端设备不使用该同步资源发送同步信号。例如，当一个同步周期内配置了2套同步资源，每套同步资源包括4个同步时隙，终端设备可以通过LBT对每一个同步时隙进行检测，如果发现一个同步时隙不可用，终端不使用该同步时隙发送同步信号。那么，根据现有的机制配置的同步资源可能不够用，例如本应该占用4个同步时隙发送同步信号，但经过LBT只能使用其中1个或2个同步时隙发送同步信号。这将导致侧行链路同步性能下降，进而影响侧行链路的数据传输，降低系统性能。
基于上述问题，本申请提出了一种侧行传输方案，在该方案中配置侧行链路传输中的同步资源包括N个同步时隙，终端设备可以根据在该同步资源上进行信道接入的结果，在同步资源的N个同步时隙中占用至少部分同步时隙发送同步信号。也就是说，在本申请提供的侧行传输方案中，由于为该终端设备配置的同步资源中包括额外数量，即冗余的同步时隙资源，使得终端设备可以在N个同步时隙中占用部分或全部同步时隙发送同步信号，从而有助于实现终端设备通过侦听(例如LBT)的方式确定是否使用同步资源来发送同步信号，有助于支持多个终端设备在一个同步资源上发送同步信号，提升了侧行链路的同步机制的可靠性和完备性，有助于提高侧行链路的数据传输性能，提高系统性能。
以下通过具体实施例详述本申请的技术方案。
图16是根据本申请实施例的无线通信的方法200的示意性流程图，如图16所示，该方法200可以包括如下内容中的至少部分内容：
210，终端设备确定侧行链路的同步资源，其中，该同步资源包括N个同步时隙，N为正整数。
220，终端设备根据在该同步资源上进行信道接入的结果，在该N个同步时隙中占用至少部分同步时隙发送同步信号。
因此，本申请实施例通过在终端设备的同步资源中包括额外数量，即冗余的同步时隙资源，使得终端设备可以在N个同步时隙中占用部分或全部同步时隙发送同步信号，从而有助于实现终端设备根据信道接入的结果确定是否使用同步资源来发送同步信号，进而有助于支持多个终端设备在一个同步资源上发送同步信号，提升了侧行链路的同步机制的可靠性和完备性，提高系统性能。
在一些实施例中，信道接入，也可以称为信道接入过程(channel access procedure)，例如可以是通过信道侦听，或信道监听，或信道检测来发起信道接入的过程。作为一个示例，该信道接入可以是LBT过程。
在一些实施例中，终端设备根据在该同步资源上进行信道接入的结果，在该N个同步时隙中占用至少部分同步时隙发送同步信号，还可以表述为：终端设备根据在该同步资源上进行LBT的结果，在该N个同步时隙中占用至少部分同步时隙发送同步信号。例如，若终端设备在同步资源，比如其中的部分或全部同步时隙上LBT成功，则在该N个同步时隙中占用至少部分同步时隙发送同步信号； 若终端设备在同步资源，比如其中的某个同步时隙LBT失败，则该终端设备确定不使用该同步时隙发送同步信号。
在一些实施例中，该信道接入过程包括以下之一：
第一类型信道接入过程，第二类型信道接入过程，第三类型信道接入过程；其中，
该第一类型信道接入过程包括类型Type1信道接入，该第二类型信道接入过程包括Type2A信道接入和/或Type2B信道接入，该第三类型信道接入过程包括Type2C信道接入。或
该第一类型信道接入过程包括类型Type2A信道接入，该第二类型信道接入过程包括Type2B信道接入，该第三类型信道接入过程包括Type2C信道接入。
在一些实施例中，在同步资源位于共享的COT内的情况下，该信道接入过程为该第二类型信道接入过程或该第三类型信道接入过程。
在一些实施例中，在同步资源不位于共享的COT内的情况下，该信道接入过程为该第一类型信道接入过程。
需要说明的是，在共享频谱，例如同步资源上，通信设备在发送信道或信号前需要先进行LBT(也称为信道检测)，只有LBT成功才能传输，LBT失败不能传输。因此，共享频谱上的通信是机会性传输。从系统的布网角度，信道检测包括两种机制，一种是基于负载的设备(Load based equipment，LBE)的LBT，也称为动态信道检测、动态信道接入或动态信道占用，另一种是基于帧结构的设备(Frame based equipment，FBE)的LBT，也称为半静态信道检测、半静态信道接入或半静态信道占用。
在LBE的信道接入机制，或者说，动态信道接入模式中，包括多种不同的信道接入方案，如Type1信道接入、Type2A信道接入、Type2B信道接入和Type2C信道接入。
Type1信道接入：
通信设备的信道检测方式为基于竞争窗口大小调整的随机回退的多时隙信道检测。其中，需要进行信道检测的检测时隙的个数是根据竞争窗口随机生成的，竞争窗口大小是根据传输业务对应的信道接入优先级(Channel access priority class，CAPC)确定的。具体地，Type1信道接入下，根据传输业务的优先级可以包括不同的信道接入优先级(CAPC)。例如，上述表1为不同信道接入优先级对应的信道接入参数的示例。其中，p取值越小，信道接入优先级越高。可选地，上述表1用于终端设备的上行传输的Type1信道接入。
Type2A信道接入：
通信设备的信道检测方式为固定长度为25微秒的单检测时隙的信道检测。具体地，Type2A信道接入下，通信设备可以在传输开始前的25微秒的检测时隙内进行信道检测，并在信道检测成功后进行传输。
Type2B信道接入：
通信设备的信道检测方式为固定长度为16微秒的单检测时隙的信道检测。具体地，Type2B信道接入下，通信设备可以在传输开始前的16微秒的检测时隙内进行信道检测，并在信道检测成功后进行传输。其中，该传输的起始位置距离上一次传输的结束位置之间的空隙长度为16微秒。
Type2C信道接入：
通信设备在空隙结束后不做信道检测而进行传输。具体地，Type2C信道接入下，通信设备可以直接进行传输，但该传输的起始位置距离上一次传输的结束位置之间的空隙长度为小于或等于16微秒。另外，该传输的长度不超过584微秒。
在本申请一些可选的实施例中，终端设备的侧行链路的同步资源可以是周期配置的。进一步的，在一个同步周期T毫秒(ms)内，可以配置a套同步资源，每1套同步资源可以包括上述N个同步时隙(也可以称为同步时隙资源)。其中，T，a为正整数。示例性的，T可以取值为20，40，80，160，320ms等，a可以取值为1,2,3,4,5等，不做限定。
需要说明的是，本申请实施例的该N个同步时隙在原有同步时隙的配置基础上，增加了同步时隙资源的冗余量，即终端设备可以在其中选择可用的同步时隙资源来发送同步信号，从而有助于终端设备在确定是否使用同步资源来发送同步信号的情况下，发送足够量的同步信号，提升侧行链路的同步性能。
在一些实施例中，在步骤210中，网络设备可以为终端设备配置侧行链路的同步资源，或配置终端设备可以在该同步资源的N个同步时隙中的至少部分同步时隙上传输同步信号。
例如，网络设备可以向终端设备发送配置信息，用于配置终端设备的一个同步周期中的同步资源，或终端设备可以在该同步资源的N个同步时隙中的至少部分同步时隙上传输同步信号。对应的，终端设备接收该配置信息，并根据该配置信息，确定侧行链路的同步资源，或确定可以在该同步资源的N 个同步时隙中的至少部分同步时隙上传输同步信号。
可选的，上述配置信息还可以用于配置不同子载波间隔的同步资源支持的同步时隙的个数。相应的，终端设备根据该配置信息，确定不同子载波间隔的同步资源支持的同步时隙的个数，例如可以为上述N。示例性的，N的取值范围为{1-1024}。可选的，N通过配置可取该取值范围内的一个或多个值，不做限定。
可选的，不同子载波间隔的同步资源支持的同步时隙的个数不同。
作为一个示例，在FR1中不同子载波间隔时每套同步资源内支持的同步时隙的个数分别为：
15kHz SCS：{1,2}
30kHz SCS：{1,2,4}
30kHz SCS：{1,2,4,6,8}
在FR2中不同子载波间隔时每套同步资源内支持的同步时隙的个数分别为：
60kHz SCS：{1,2,4,6,8,10}
120kHz SCS：{1,2,4,6,8,10,16,20,32,40,64,80}
作为另一个示例，在FR1中不同子载波间隔时每套同步资源内支持的同步时隙的个数分别为：
15kHz SCS：{1,2,4,6,8}
30kHz SCS：{1,2,4,6,8,10,16,20}
30kHz SCS：{1,2,4,6,8,10,16,20,32,40}
在FR2中不同子载波间隔时每套同步资源内支持的同步时隙的个数分别为：
60kHz SCS：{1,2,4,6,8,10,16,20,32,40,64,80}
120kHz SCS：{1,2,4,6,8,10,16,20,32,40,64,80,128,140}
在一些可选的实施例中，上述配置信息还可以用于配置终端设备的侧行链路的同步周期中包括的所述同步资源的个数a。对应的，终端设备根据该配置信息，确定侧行链路的同步周期中包括的同步资源的个数a。
在一些可选的实施例中，上述配置信息还可以用于配置终端设备的侧行链路的同步周期的时长T。对应的，终端设备根据该配置信息，确定侧行链路的同步周期的时长T。
在一些可选的实施例中，上述配置信息还可以用于配置终端设备占用所述N个同步时隙中的M个同步时隙发送同步信号，其中，M为小于或等于N的正整数。也就是说，在该N个同步时隙中，可以包括(N-M)个额外数量，即冗余的同步时隙资源。
作为一个具体的例子，当1套同步资源配置了N＝6个同步时隙时，终端设备可以占用M＝4个同步时隙发送同步信号。
可选的，当终端设备实际占用的用于发送同步信号的同步时隙的数量可以小于或等于M，本申请对此不做限定。例如，当终端设备通过LBT，确定1套同步资源中的可占用的同步时隙的数量小于M时，可以以实际可占用的同步时隙的数量为准，发送同步信号。
因此，本申请实施例中，网络设备可以配置终端设备的同步资源中的额外数量，即冗余的同步时隙资源，使得终端设备可以在N个同步时隙中占用M个同步时隙发送同步信号。
在另一些实施例中，当终端设备没有配置M值时，那么该终端设备可以使用上述同步资源中的N个同步时隙发送同步信息。换言之，此时终端设备可以默认N为需要发送同步信号的同步时隙的个数。
在另一些实施例中，在步骤210中，可以由协议预先为终端设备配置侧行链路的同步资源，或配置终端设备可以在该同步资源的N个同步时隙中的至少部分同步时隙上传输同步信号。本申请对此不做限定。
可选的，协议还可以配置不同子载波间隔的所述同步资源支持的同步时隙的个数、所述侧行链路的同步周期中包括的所述同步资源的个数、所述同步周期的时长和终端设备占用所述N个同步时隙中的同步时隙发送同步信号的个数M中的至少一种，本申请对此不做限定。
在一些可选的实施例中，上述步骤220具体可以通过以下方式实现：
终端设备根据对上述N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用该第i个同步时隙发送同步信号。其中，i为小于或等于N的正整数。
也就是说，在该同步资源中，该N个同步时隙中的同步时隙资源可以独立进行信道接入，即可以根据一个同步时隙资源的信道接入的结果，确定是否使用该同步时隙资源发送同步信号。示例性的，在终端设备使用一个同步时隙资源之前，先对该同步时隙资源进行LBT，然后可以根据对该同步时隙进行LBT的结果，确定是否使用该同步时隙发送同步信号。
示例性的，这里对第i个同步时隙的LBT可以是长时间LBT，或短时间LBT，不做限定。另外，由于每个同步时隙资源对应的LBT过程是独立的，因此每个同步时隙之前的LBT过程的时长可以相 同，或不同，本申请对此不做限定。
作为一个具体的例子，LBT过程的时长可以为b微妙(us)，其中b为大于或等于0的整数。需要说明的是，b＝0表示不作LBT。
作为一种可能的实现方式，在信道接入的结果指示第i个同步时隙信道可用的情况下，终端设备确定使用该第i个同步时隙发送同步信号；否则终端设备确定不使用该第i个同步时隙发送同步信号。示例性的，当同步时隙的信道空闲，或信道能量低于预测门限时，可用确定该同步时隙可用。
在一些实施例中，如以下图17至图19，当配置终端设备占用N个同步时隙中的M个同步时隙发送同步信号时，终端设备可以对同步时隙独立进行信道接入，例如LBT，在该N个同步时隙中确定至多M个同步时隙来发送同步信号。
图17示出了根据本申请实施例的发送同步信号的一个具体示意图。示例性的，在160ms的同步周期中的1套同步资源中配置了N＝6个同步时隙，其中UE1可占用M＝4个同步时隙发送同步信号。参见图17，在该实施例中，UE1在每个同步时隙资源前进行LBT，获知第1、3、5同步时隙信道检测成功，即第1、3、5同步时隙信道可用，第2、4、6同步时隙信道检测失败，即第2、4、6同步时隙信道忙碌，即可以占用第1、3、5同步时隙信道来发送同步信号。由于这个同步周期内的该同步资源中已经没有额外的同步资源可以使用，UE1实际占用了3个同步时隙发送同步信号。即，本申请实施例允许终端设备实际占用的同步时隙资源小于M＝4个。
图18示出了根据本申请实施例的发送同步信号的另一个具体示意图。示例性的，在160ms的同步周期中的1套同步资源中配置了N＝6个同步时隙，其中UE1可占用M＝4个同步时隙发送同步信号。参见图18，在该实施例中，UE1在每个同步时隙资源前进行LBT，获知第1、2同步时隙信道检测失败，即第1、2同步时隙信道忙碌，第3、4、5、6同步时隙信道检测成功，即第3、4、5、6同步时隙信道可用，即可以占用第3、4、5、6同步时隙信道来发送同步信号。在这个同步周期内，UE1实际占用的用于发送同步信号的同步时隙与配置的可占用的同步时隙M＝4相同。
在一些可选的实施例中，在步骤220中，终端设备根据在同步资源上至少M个同步时隙进行信道接入的结果，在上述N个同步时隙中占用M个同步时隙发送同步信号，且在该终端设备在该M个同步时隙发送同步信号之后，终端设备可以确定不在该同步资源上除该至少M个同步时隙之外的同步时隙进行信道接入，且不使用除该至少M个同步时隙之外的同步时隙发送同步信号。也就是说，当终端设备确定在一个同步周期的同步资源内能够发送足够量的同步信号之后，终端设备将不在该同步资源的其他同步时隙上进行LBT，也不使用其他同步时隙发送同步信号。
图19示出了根据本申请实施例的发送同步信号的另一个具体示意图。示例性的，在160ms的同步周期中的1套同步资源中配置了N＝6个同步时隙，其中UE1可占用M＝4个同步时隙发送同步信号。参见图19，在该实施例中，UE1在同步时隙资源前进行LBT，当获知第1、2、3、4同步时隙信道检测成功，即第1、2、3、4同步时隙信道可用，即可以占用第1、2、3、4同步时隙信道来发送同步信号。在这个周期内，UE1对于剩余的2个同步时隙，即第5、6同步时隙不进行LBT，也不使用来发送同步信号。
在一些实施例中，如以下图20，当没有配置终端设备占用N个同步时隙中的M个同步时隙发送同步信号时，终端设备可以对同步时隙独立进行信道接入，例如LBT，在该N个同步时隙中确定至多N个同步时隙来发送同步信号，即终端设备可以默认可以占用同步资源中的所有同步时隙来发送同步信号。
图20示出了根据本申请实施例的发送同步信号的一个具体示意图。示例性的，在160ms的同步周期中的1套同步资源中配置了N＝8个同步时隙。参见图20，在该实施例中，UE1在每个同步时隙资源前进行LBT，获知第1～8同步时隙信道检测成功，即可以占用第1～8同步时隙信道来发送同步信号。也就是说，UE1占用所有可用的同步时隙进行同步信号的发送。
在另一些实施例中，如果终端设备对N个同步时隙进行LBT之后，发现其中可用的同步时隙个数小于N个，那么终端设备可以以实际可用的同步时隙的个数为准进行同步信号的发送。
因此，本申请实施例可以通过对同步时隙独立进行信道接入，例如LBT，来确定是否使用同步时隙来发送同步信号，可以有助于终端设备灵活的使用同步时隙资源发送同步信号，进而有助于提升侧行链路同步机制的可靠性和完备性，提高系统性能。
在一些可选的实施例中，上述步骤220具体可以通过以下方式实现：
终端设备根据对上述N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用该第i个同步时隙以及该同步资源中的位于该第i个同步时隙之后的L个同步时隙发送同步信号。其中，i、L为小于或等于N的正整数，(i+L)≤N。
也就是说，在该同步资源中，该N个同步时隙之间的信道接入可以是相互关联的，即可以根据一 个同步时隙资源的信道接入的结果，确定是否使用该同步时隙资源，以及其他同步时隙资源发送同步信号。示例性的，在终端设备对一个同步时隙资源进行LBT，然后可以根据对该同步时隙进行LBT的结果，确定是否使用该同步时隙，以及该同步时隙之后的L个同步时隙该发送同步信号。
示例性的，这里对第i个同步时隙的LBT可以是长时间LBT，或短时间LBT，不做限定。具体的，长时间LBT，以及短时间LBT可以参见上文中的描述，不再赘述。
在一些实施例中，当同步资源中位于该第i个同步时隙之后的同步时隙的数量大于或等于(M-1)时，L＝(M-1)。当同步资源中位于该第i个同步时隙之后的同步时隙的数量小于(M-1)时，L等于该同步资源中位于该第i个同步时隙之后的同步时隙的数量。其中，M可以参见上文中的描述，不再赘述。也就是说，L的取值可以小于或等于(M-1)，从而使得终端设备可以在同步资源的最多M个同步时隙上发送同步信号。
在一些实施例中，当没有配置M时，L等于该同步资源中位于该第i个同步时隙之后的同步时隙的数量，即终端设备最多可以将同步资源中位于该第i个同步时隙之后的所有同步时隙占用来发送同步信号。也就是说，这里终端设备可以默认最多可以在同步资源的N个同步时隙发送同步信号。
在另一些实施例中，L可以为预先设置，例如由协议定义，或者由网络设备预先配置，不做限定。例如，L可以取值为1,2,3,4等。
作为一种可能的实现方式，在信道接入的结果指示第i个同步时隙信道可用的情况下，终端设备确定使用该第i个同步时隙以及上述同步资源中的位于该第i个同步时隙之后的L个同步时隙发送同步信号。否则，终端设备确定不使用该第i个同步时隙发送同步信号。
在一些实施例中，上述N个同步时隙中相邻时隙的间隔小于d微妙，其中d为正整数。示例性的，d的取值范围为{0，1-10 5}。也就是说，在同步时隙中相邻时隙的间隔小于预设值时，可以不对同步资源中的位于该第i个同步时隙之后的L个同步时隙进行侦听，即可以直接占用该L个同步时隙发送同步信号。
在一些可选的实施例中，当终端设备确定不使用该第i个同步时隙发送同步信号之后，可以根据对该N个同步时隙中的第(i+1)个同步时隙(即第i个同步时隙之后的同步时隙)的信道接入的结果，确定是否使用该第(i+1)个同步时隙以及同步资源中位于该第(i+1)个同步时隙之后的同步时隙发送同步信号。具体的，该过程与“根据对该N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用该第i个同步时隙以及同步资源中位于该第i个同步时隙之后的同步时隙发送同步信号”的过程类似，可以参见上文中的描述，不再赘述。
在一些实施例中，如以下图21，当配置终端设备占用N个同步时隙中的M个同步时隙发送同步信号时，终端设备可以将同步时隙之间的信道接入，例如LBT关联，在该N个同步时隙中确定至多M个同步时隙来发送同步信号。
图21示出了根据本申请实施例的发送同步信号的一个具体示意图。示例性的，在160ms的同步周期中的1套同步资源中配置了N＝6个同步时隙，其中UE1可占用M＝4个同步时隙发送同步信号，同步时隙之间的间隔d＝16或32us。参见图21，在该实施例中，UE1在第1个同步时隙资源前进行LBT，获知第1个同步时隙信道检测成功，即可以占用第1～4同步时隙信道来发送同步信号。这里，UE1对于剩余的第5、6个同步时隙不再进行LBT，也不占用来发送同步信号。在这个同步周期内，UE1实际占用的用于发送同步信号的同步时隙与配置的可占用的同步时隙M＝4相同。
可选的，在其他示例中，如果UE1在第1个同步时隙上LBT失败，在第2个同步时隙上LBT成功，那么UE1可以占用第2～5个同步时隙来发送同步信号。又例如，如果UE1在第1、2个同步时隙上LBT失败，在第3个同步时隙上LBT成功，那么UE1可以占用第3～6个同步时隙来发送同步信号，以此类推。
在一些实施例中，如以下图22，当没有配置终端设备占用N个同步时隙中的M个同步时隙发送同步信号时，终端设备可以将同步时隙之间的信道接入，例如LBT关联，在该N个同步时隙中确定至多N个同步时隙来发送同步信号，即终端设备可以默认可以占用同步资源中的所有同步时隙来发送同步信号。
图22示出了根据本申请实施例的发送同步信号的一个具体示意图。示例性的，在160ms的同步周期中的1套同步资源中配置了N＝8个同步时隙，同步时隙之间的间隔d＝16或32us。参见图22，在该实施例中，UE1在第1、2个同步时隙资源前进行LBT，获知第1、2个同步时隙信道检测失败，在第3个同步时隙资源前进行LBT，获知第3个同步时隙信道检测成功，则对该同步资源内的该第3个同步时隙之后的同步时隙(即第3～8个同步时隙)可以不进行LBT，直接使用发送同步信号。
可选的，在其他示例中，如果UE1在第1个同步时隙上LBT成功，那么UE1可以占用第1～8个同步时隙发送同步信号。又例如，如果在第1个同步时隙上LBT失败，在第2个同步时隙上LBT成 功，那么UE1可以占用第2～8个同步时隙来发送同步信号，以此类推。
作为一种可能的实现方式，所述终端设备根据对所述N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用所述第i个同步时隙以及所述同步资源中的位于所述第i个同步时隙之后的L个同步时隙发送所述同步信号，具体可以包括：
在采用第一信道接入方式得到的信道接入的结果指示所述第i个同步时隙的信道可用的情况下，确定使用所述第i个同步时隙发送所述同步信号；
根据采用第二信道接入方式对所述N个同步时隙中的第(i+j)个同步时隙的信道接入的结果，确定是否使用所述第(i+j)个同步时隙发送所述同步信号，其中，j为小于或等于N的正整数，j≤L。
也就是说，在第i个同步时隙以及之后的L个同步时隙上，可以联合第一信道接入方式和第二信道接入方式，确定是否使用该第i个同步时隙以及之后的L个同步时隙来发送同步信号。例如，可以在采用第一信道接入方式得到的信道接入的结果指示第i个同步时隙的信道可用的情况下，采用第二信道接入方式对同步资源中该第i个同步时隙之后的同步时隙进行信道接入，确定是否使用该第i个同步时隙之后的同步时隙发送同步信号。
在一些实施例中，对上述N个同步时隙中相邻时隙的间隔不做限定。示例性的，上述N个同步时隙中的相邻时隙的间隔可以大于d微妙，或者小于d微妙。
在一些可选的实施例中，上述第一信道接入方式包括第一先侦听后传输LBT方式，第二信道接入的方式包括第二LBT方式，其中，所述第一LBT方式的时长大于所述第二LBT的时长。示例性的，第一LBT可以为长时间LBT，第二LBT可以为短时间LBT，具体可以参见上文中的描述，不再赘述。
在另一些可选的实施例中，在采用第一信道接入方式得到的信道接入的结果指示第i个同步时隙的信道忙碌(即对第i个同步时隙信道接入失败)的情况下，确定不使用该第i个同步时隙发送所述同步信号。此时，可以根据对所述N个同步时隙中的第(i+1)个同步时隙的信道接入的结果，确定是否使用所述第(i+1)个同步时隙以及所述同步资源中的位于所述第(i+1)个同步时隙之后的同步时隙发送同步信号。具体的，这里的过程与“根据对第i个同步时隙的信道接入的结果，确定是否使用第i个同步时隙以及同步资源中的位于第i个同步时隙之后的同步时隙发送同步信号”的过程类似，可以参见上文中的描述，不再赘述。
作为一种可能的实现方式，上述“根据采用第二信道接入方式对所述N个同步时隙中的第(i+j)个同步时隙的信道接入的结果，确定是否使用所述第(i+j)个同步时隙发送所述同步信号”具体可以包括：
在采用所述第二信道接入方式得到的信道接入的结果指示所述第(i+j)个同步时隙的信道可用的情况下，确定使用所述第(i+j)个同步时隙发送所述同步信号；否则
所述终端设备确定不使用所述第(i+j)个同步时隙发送所述同步信号。
也就是说，可以在采用第一信道接入方式得到的信道接入的结果指示第i个同步时隙的信道可用，以及采用第二信道接入方式对同步资源中该第i个同步时隙之后的同步时隙进行信道接入的情况下，如果信道接入的结果指示该第i个同步时隙之后的同步时隙的信道可用，那么可以确定使用该第i个同步时隙之后的同步时隙发送同步信号。否则，如果信道接入的结果指示该第(i+j)同步时隙的信道忙碌(即信道接入失败)，那么终端设备不使用该第(i+j)同步时隙发送同步信号。
在一些可选的实施例中，如果采用所述第二信道接入方式得到的信道接入的结果指示该第(i+j)同步时隙的信道忙碌(即信道接入失败)的情况下，可以根据对上述N个同步时隙中的第(i+j+1)个同步时隙的信道接入的结果，确定是否使用所述第(i+j+1)个同步时隙以及所述同步资源中的位于所述第(i+j+1)个同步时隙之后的同步时隙发送同步信号。具体的，这里的过程与“根据对第i个同步时隙的信道接入的结果，确定是否使用第i个同步时隙以及同步资源中的位于第i个同步时隙之后的同步时隙发送同步信号”的过程类似，可以参见上文中的描述，不再赘述。
在一些实施例中，如以下图23和24，当配置终端设备占用N个同步时隙中的M个同步时隙发送同步信号时，终端设备可以将同步时隙之间的信道接入，例如LBT，进一步可以包括长时间LBT和短时间LBT关联，在该N个同步时隙中确定至多M个同步时隙来发送同步信号。
图23示出了根据本申请实施例的发送同步信号的一个具体示意图。示例性的，在160ms的同步周期中的1套同步资源中配置了N＝6个同步时隙，其中UE1可占用M＝4个同步时隙发送同步信号。参见图23，在该实施例中，UE1在第1个同步时隙资源前进行长时间LBT成功，在后续的第2～4同步时隙进行短时间LBT也成功，那么即可以占用第1～4同步时隙信道来发送同步信号。这里，UE1对于剩余的第5、6个同步时隙不再进行LBT，也不占用来发送同步信号。在这个同步周期内，UE1实际占用的用于发送同步信号的同步时隙与配置的可占用的同步时隙M＝4相同。
可选的，在其他示例中，如果UE1在第1个同步时隙上长时间LBT失败，在第2个同步时隙上 长时间LBT成功，那么UE1可以在第3～5个同步时隙进行短时间LBT，如果短时间LBT都成功，则UE1可以使用第2～5个同步时隙来发送同步信号。又例如，如果UE1在第1、2个同步时隙上长时间LBT失败，在第3个同步时隙上长时间LBT成功，那么UE1可以在第4～6个同步时隙进行短时间LBT，如果短时间LBT都成功，则UE1可以使用第3～6个同步时隙来发送同步信号，以此类推。
图24示出了根据本申请实施例的发送同步信号的另一个具体示意图。示例性的，在160ms的同步周期中的1套同步资源中配置了N＝6个同步时隙，其中UE1可占用M＝4个同步时隙发送同步信号。参见图24，在该实施例中，UE1在第1个同步时隙资源前进行长时间LBT成功，那么UE1可以占用第1个同步时隙信道发送同步信号，并在第2个同步时隙进行短时间LBT。如果在第2个同步时隙短时间LBT失败，UE1可以继续在第3个同步时隙进行长时间LBT，如果在第3个同步时隙长时间LBT成功，那么UE1可以占用第3个同步时隙信道发送同步信号，并在第4个同步时隙进行短时间LBT。以此类推，如果UE1在第4、5个同步时隙短时间LBT成功，那么UE1可以使用第4、5个同步时隙发送同步信号。这里，UE1对于剩余的第6个同步时隙不再进行LBT，也不占用来发送同步信号。在这个同步周期内，UE1实际占用的用于发送同步信号的同步时隙与配置的可占用的同步时隙M＝4相同。
可选的，在其他示例中，如果UE1在第1个同步时隙上长时间LBT失败，在第2个同步时隙上长时间LBT成功，那么UE1可以在2～5个同步时隙按照图24的方式进行同步信号的发送。又例如，如果UE1在第1、2个同步时隙上长时间LBT失败，在第3个同步时隙上长时间LBT成功，那么UE1可以在第3～6个同步时隙按照图24的方式进行同步信号的发送。如果UE1在第1、2、3、4个同步时隙上长时间LBT失败，在第5个同步时隙上长时间LBT成功，那么UE1可以在第5～6个同步时隙按照图24的方式进行同步信号的发送，以此类推。可选的，在一些实施例中，UE1实际占用的用于发送同步信号的同步时隙可以小于配置的可占用的同步时隙M＝4。
在一些实施例中，如以下图25，当没有配置终端设备占用N个同步时隙中的M个同步时隙发送同步信号时，终端设备可以将同步时隙之间的信道接入，例如LBT，进一步可以包括长时间LBT和短时间LBT关联，在该N个同步时隙中确定至多N个同步时隙来发送同步信号，即终端设备可以默认可以占用同步资源中的所有同步时隙来发送同步信号。
图25示出了根据本申请实施例的发送同步信号的一个具体示意图。示例性的，在160ms的同步周期中的1套同步资源中配置了N＝8个同步时隙。参见图25，在该实施例中，UE1在第1、2个同步时隙资源前进行长时间LBT失败，在第3个同步时隙资源前进行长时间LBT成功，则对该同步资源内的该第4个同步时隙以及之后的同步时隙(即第4～8个同步时隙)可以进行短时间LBT。如果在后续的第4～8同步时隙进行短时间LBT也成功，那么即可以占用第3～8同步时隙信道来发送同步信号。
可选的，在其他示例中，如果UE1在第1个同步时隙上长时间LBT成功，那么UE1可以在第2～8个同步时隙进行短时间LBT。如果在后续的第2～8同步时隙进行短时间LBT也成功，那么即可以占用第1～8个同步时隙发送同步信号，即按照图25所示的方式进行同步信号的发送。又例如，如果在第1个同步时隙上长时间LBT失败，在第2个同步时隙上长时间LBT成功，那么UE1可以按照图25所示的方式进行同步信号的发送，以此类推。
因此，本申请实施例可以通过将同步时隙之间的信道接入，例如LBT，或进一步例如长时间LBT和短时间LBT相关联，来确定是否使用同步时隙来发送同步信号，可以有助于终端设备灵活的使用同步时隙资源发送同步信号，进而有助于提升侧行链路同步机制的可靠性和完备性，提高系统性能。
在一些可选的实施例中，上述N个同步时隙可以包括第一同步时隙和第二同步时隙。其中，步骤220具体可以通过以下方式实现：
终端设备根据对上述第一同步时隙的信道接入的结果，确定是否使用该第一同步时隙发送所述同步信号；终端设备确定在所述第一同步时隙不满足发送所述同步信号的要求的情况下，确定使用所述第二同步时隙发送同步信号。
这里，所述第一同步时隙不满足发送所述同步信号的要求，可用包括通过LBT发现第一同步时隙中的同步时隙均不可用的情况，或者包括通过LBT仅能使用第一同步时隙中的部分同步时隙发送同步信号，而使用该部分同步时隙不足以满足终端设备发送同步信号的需求的情况。
示例性的，上述N个同步时隙中可以包括X个第一同步时隙和Y个第二同步时隙，X、Y为大于或等于0的整数，即N＝X+Y。也就是说，在1套同步资源内，可以包括N+Y个同步时隙。作为示例，可以根据在该X个同步时隙上的信道接入的结果，确定是否使用该X个同步时隙发送同步信号；当该X个同步时隙不满足终端设备的方式同步信号的需求时，可以在该Y个同步时隙中选择部分或全部(例如1个或多个)同步时隙发送同步信号。也就是说，第二同步时隙可以作为备用同步时隙，来发送同步信号。具体的，根据对第一同步时隙的信道接入的结果，确定是否使用第一同步时隙发送 同步信号的过程，可以参见上文中的描述，不再赘述。
在一些可选的实施例中，在对上述第二同步时隙进行信道接入得到的信道接入的结果指示所述第二同步时隙的信道可用的情况下，确定使用所述第二同步时隙发送所述同步信号。例如，对于上述Y个同步时隙，可用在进行LBT(例如长时间LBT或短时间LBT)成功的同步时隙上发送同步信号。
在另一些可选的实施例中，对于上述第二同步时隙，无需进行LBT可用直接使用发送同步信号，本申请对此不做限定。
图26示出了根据本申请实施例的发送同步信号的一个具体示意图。示例性的，在160ms的同步周期中的1套同步资源中配置了N＝6个同步时隙，其中包括X＝2个第一同步时隙，以及Y＝2个第二同步时隙。参见图26，在该实施例中，UE1在第1～4个同步时隙资源前进行LBT失败时，可以不对第5、6个同步时隙进行LBT，而直接占用发送同步信号。
因此，本申请实施例可以通过在同步资源中设置备用的同步时隙，以用于在通过LBT的方式获取的能够用于发送同步信号的同步时隙不够用的情况下，直接发送同步信号，从而可以满足终端设备发送足够量的同步信号的需求，进而有助于提升侧行链路同步机制的可靠性和完备性，提高系统性能。
图27是根据本申请实施例的无线通信的方法300的示意性流程图，如图27所示，该方法300可以包括如下内容中的至少部分内容：
310，网络设备向终端设备发送配置信息，该配置信息用于配置所述终端设备在同步资源的N个同步时隙中占用至少部分同步时隙发送同步信号，其中，N为正整数。
在一些可选的实施例中，N的取值范围为{1,…,1024}。
在一些可选的实施例中，所述N个同步时隙包括第一同步时隙和第二同步时隙；
其中，所述第二同步时隙用于在所述第一同步时隙不满足所述终端设备发送所述同步信号的要求的情况下发送所述同步信号。
在一些可选的实施例中，所述配置信息还用于配置不同子载波间隔的所述同步资源支持的同步时隙的个数、所述侧行链路的同步周期中包括的所述同步资源的个数、所述同步周期的时长和所述终端设备占用所述N个同步时隙中的同步时隙发送同步信号的个数M中的至少一种，其中，M为小于或等于N的正整数。
应理解，方法300中的步骤可以参考上文中方法200中的相应步骤的描述，为了避免重复，在此不再赘述。
以上结合附图详细描述了本申请的具体实施方式，但是，本申请并不限于上述实施方式中的具体细节，在本申请的技术构思范围内，可以对本申请的技术方案进行多种简单变型，这些简单变型均属于本申请的保护范围。例如，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本申请对各种可能的组合方式不再另行说明。又例如，本申请的各种不同的实施方式之间也可以进行任意组合，只要其不违背本申请的思想，其同样应当视为本申请所公开的内容。
还应理解，在本申请的各种方法实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
上文详细描述了本申请的方法实施例，下文结合图28至图29，详细描述本申请的装置实施例。应理解，装置实施例与方法实施例相互对应，类似的描述可以参照方法实施例。
图28示出了根据本申请实施例的终端设备400的示意性框图。如图28所示，该终端设备400包括：
处理单元410，用于确定侧行链路的同步资源，其中，所述同步资源包括N个同步时隙，N为正整数。
通信单元420，用于根据在所述同步资源上进行信道接入的结果，在所述N个同步时隙中占用至少部分同步时隙发送同步信号。
在一些可选的实施例中，所述通信单元420具体用于：
所述终端设备根据对所述N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用所述第i个同步时隙发送所述同步信号，其中，i为小于或等于N的正整数。
在一些可选的实施例中，所述通信单元420具体用于：
在所述信道接入的结果指示所述第i个同步时隙信道可用的情况下，所述终端设备确定使用所述第i个同步时隙发送所述同步信号；否则
所述终端设备确定不使用所述第i个同步时隙发送所述同步信号。
在一些可选的实施例中，所述通信单元420具体用于：
所述终端设备根据对所述N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用所 述第i个同步时隙以及所述同步资源中的位于所述第i个同步时隙之后的L个同步时隙发送所述同步信号，其中，i、L为小于或等于N的正整数，(i+L)≤N。
在一些可选的实施例中，所述通信单元420具体用于：
在所述信道接入的结果指示所述第i个同步时隙信道可用的情况下，所述终端设备确定使用所述第i个同步时隙以及所述L个同步时隙发送所述同步信号；否则，
所述终端设备确定不使用所述第i个同步时隙发送所述同步信号。
在一些可选的实施例中，所述N个同步时隙中相邻时隙的间隔小于d微妙，其中d为正整数。
在一些可选的实施例中，d的取值范围为{0，1-10 5}。
在一些可选的实施例中，所述通信单元420具体用于：
在采用第一信道接入方式得到的信道接入的结果指示所述第i个同步时隙的信道可用的情况下，确定使用所述第i个同步时隙发送所述同步信号；
根据采用第二信道接入方式对所述N个同步时隙中的第(i+j)个同步时隙的信道接入的结果，确定是否使用所述第(i+j)个同步时隙发送所述同步信号，其中，j为小于或等于N的正整数，j≤L。
在一些可选的实施例中，所述通信单元420具体用于：
在采用所述第二信道接入方式得到的信道接入的结果指示所述第(i+j)个同步时隙的信道可用的情况下，确定使用所述第(i+j)个同步时隙发送所述同步信号；否则
所述终端设备确定不使用所述第(i+j)个同步时隙发送所述同步信号。
在一些可选的实施例中，所述第一信道接入方式包括第一先听后说LBT方式，所述第二信道接入的方式包括第二LBT方式，其中，所述第一LBT方式的时长大于所述第二LBT的时长。
在一些可选的实施例中，当所述同步资源中位于所述第i个同步时隙之后的同步时隙的数量大于或等于(M-1)时，L＝(M-1)；
当所述同步资源中位于所述第i个同步时隙之后的同步时隙的数量小于(M-1)时，L等于所述同步资源中位于所述第i个同步时隙之后的同步时隙的数量；
其中，M表示为所述终端设备配置的在所述N个同步时隙中可用于发送同步信号的同步时隙的数量，M为小于或等于N的正整数。
在一些可选的实施例中，所述通信单元420具体用于：
所述终端设备根据在所述同步资源上至少M个同步时隙进行信道接入的结果，在所述N个同步时隙中占用M个同步时隙发送同步信号；
在所述终端设备在所述M个同步时隙发送同步信号之后，所述终端设备确定不在所述同步资源上除所述至少M个同步时隙之外的同步时隙进行信道接入，且不使用除所述至少M个同步时隙之外的同步时隙发送所述同步信号；
其中，M表示为所述终端设备配置的在所述N个同步时隙中可用于发送同步信号的同步时隙的数量，M为小于或等于N的正整数。
在一些可选的实施例中，所述N个同步时隙包括第一同步时隙和第二同步时隙；
其中，所述通信单元420具体用于：
所述终端设备根据对所述第一同步时隙的信道接入的结果，确定是否使用所述第一同步时隙发送所述同步信号；
所述终端设备确定在所述第一同步时隙不满足发送所述同步信号的要求的情况下，确定使用所述第二同步时隙发送所述同步信号。
在一些可选的实施例中，所述通信单元420具体用于：
在对所述第二同步时隙进行信道接入得到的信道接入的结果指示所述第二同步时隙的信道可用的情况下，确定使用所述第二同步时隙发送所述同步信号。
在一些可选的实施例中，N的取值范围为{1,…,1024}。
在一些可选的实施例中，所述通信单元420具体用于：
接收配置信息，所述配置信息用于配置所述终端设备在所述N个同步时隙中占用至少部分同步时隙发送同步信号。
在一些可选的实施例中，所述配置信息还用于配置不同子载波间隔的所述同步资源支持的同步时隙的个数、所述侧行链路的同步周期中包括的所述同步资源的个数、所述同步周期的时长和终端设备占用所述N个同步时隙中的同步时隙发送同步信号的个数M中的至少一种，其中，M为小于或等于N的正整数。
在一些可选的实施例中，不同子载波间隔的所述同步资源支持的同步时隙的个数、所述侧行链路的同步周期中包括的所述同步资源的个数、所述同步周期的时长和所述终端设备占用所述N个同步时 隙中的同步时隙发送同步信号的个数M中的至少一种由协议预先配置，其中，M为小于或等于N的正整数。
在一些实施例中，上述通信单元可以是通信接口或收发器，或者是通信芯片或者片上系统的输入输出接口。上述处理单元可以是一个或多个处理器。
应理解，根据本申请实施例的终端设备400可对应于本申请方法实施例中的终端设备，并且终端设备400中的各个单元的上述和其它操作和/或功能分别为了实现图16所示无线通信的方法200中终端设备的相应流程，为了简洁，在此不再赘述。
图29示出了根据本申请实施例的网络设备500的示意性框图。如图29所示，该网络设备500包括：
通信单元520，用于网络设备向终端设备发送配置信息，所述配置信息用于配置所述终端设备在同步资源的N个同步时隙中占用至少部分同步时隙发送同步信号，其中，N为正整数。
可选的，该网络设备还可以包括处理单元510，用于确定上述配置信息。
在一些可选的实施例中，N的取值范围为{1,…,1024}。
在一些可选的实施例中，所述N个同步时隙包括第一同步时隙和第二同步时隙；
其中，所述第二同步时隙用于在所述第一同步时隙不满足所述终端设备发送所述同步信号的要求的情况下发送所述同步信号。
在一些可选的实施例中，所述配置信息还用于配置不同子载波间隔的所述同步资源支持的同步时隙的个数、所述侧行链路的同步周期中包括的所述同步资源的个数、所述同步周期的时长和所述终端设备占用所述N个同步时隙中的同步时隙发送同步信号的个数M中的至少一种，其中，M为小于或等于N的正整数。
在一些实施例中，上述通信单元可以是通信接口或收发器，或者是通信芯片或者片上系统的输入输出接口。上述处理单元可以是一个或多个处理器。
应理解，根据本申请实施例的网络设备500可对应于本申请方法实施例中的网络设备，并且网络设备500中的各个单元的上述和其它操作和/或功能分别为了实现图27所示无线通信的方法300中网络设备的相应流程，为了简洁，在此不再赘述。
图30是本申请实施例提供的一种通信设备600示意性结构图。图30所示的通信设备600包括处理器610，处理器610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
在一些实施例中，如图30所示，通信设备600还可以包括存储器620。其中，处理器610可以从存储器620中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器620可以是独立于处理器610的一个单独的器件，也可以集成在处理器610中。
在一些实施例中，如图30所示，通信设备600还可以包括收发器630，处理器610可以控制该收发器630与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器630可以包括发射机和接收机。收发器630还可以进一步包括天线，天线的数量可以为一个或多个。
在一些实施例中，该通信设备600具体可为本申请实施例的网络设备，并且该通信设备600可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
在一些实施例中，该通信设备600具体可为本申请实施例的终端设备，并且该通信设备600可以实现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。
图31是本申请实施例的装置的示意性结构图。图31所示的装置700包括处理器710，处理器710可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
在一些实施例中，如图31所示，装置700还可以包括存储器720。其中，处理器710可以从存储器720中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器720可以是独立于处理器710的一个单独的器件，也可以集成在处理器710中。
在一些实施例中，该装置700还可以包括输入接口730。其中，处理器710可以控制该输入接口730与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
在一些实施例中，该装置700还可以包括输出接口740。其中，处理器710可以控制该输出接口740与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
在一些实施例中，该装置可应用于本申请实施例中的网络设备，并且该装置可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
在一些实施例中，该装置可应用于本申请实施例中的终端设备，并且该装置可以实现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。
在一些实施例中，本申请实施例提到的装置也可以是芯片。例如可以是系统级芯片，系统芯片，芯片系统或片上系统芯片等。
图32是本申请实施例提供的一种通信系统1000的示意性框图。如图32所示，该通信系统1000包括终端设备1010和网络设备1020。
其中，该终端设备1010可以用于实现上述方法中由终端设备实现的相应的功能，以及该网络设备1020可以用于实现上述方法中由网络设备实现的相应的功能，为了简洁，在此不再赘述。
应理解，本申请实施例的处理器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，上述方法实施例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。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请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该处理器也可以是任何常规的处理器等。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。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
在一些实施例中，该计算机可读存储介质可应用于本申请实施例中的网络设备，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网络设备实现的相应流程，为了简洁，在此不再赘述。
在一些实施例中，该计算机可读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。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
在一些实施例中，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
在一些实施例中，该计算机程序产品可应用于本申请实施例中的终端设备，并且该计算机程序指令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。
本申请实施例还提供了一种计算机程序。
在一些实施例中，该计算机程序可应用于本申请实施例中的网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
在一些实施例中，该计算机程序可应用于本申请实施例中的终端设备，当该计算机程序在计算机上运行时，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。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤， 能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。针对这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (50)

  1. 一种无线通信的方法，其特征在于，包括：
    终端设备确定侧行链路的同步资源，其中，所述同步资源包括N个同步时隙，N为正整数；
    所述终端设备根据在所述同步资源上进行信道接入的结果，在所述N个同步时隙中占用至少部分同步时隙发送同步信号。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备根据在所述同步资源上进行信道接入的结果，在所述N个同步时隙中占用至少部分同步时隙发送同步信号，包括：
    所述终端设备根据对所述N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用所述第i个同步时隙发送所述同步信号，其中，i为小于或等于N的正整数。
  3. 如权利要求2所述的方法，其特征在于，所述终端设备根据对所述N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用所述第i个同步时隙发送所述同步信号，包括：
    在所述信道接入的结果指示所述第i个同步时隙信道可用的情况下，所述终端设备确定使用所述第i个同步时隙发送所述同步信号；否则
    所述终端设备确定不使用所述第i个同步时隙发送所述同步信号。
  4. 根据权利要求1所述的方法，其特征在于，所述终端设备根据在所述同步资源上进行信道接入的结果，在所述N个同步时隙中占用至少部分同步时隙发送同步信号，包括：
    所述终端设备根据对所述N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用所述第i个同步时隙以及所述同步资源中的位于所述第i个同步时隙之后的L个同步时隙发送所述同步信号，其中，i、L为小于或等于N的正整数，(i+L)≤N。
  5. 如权利要求4所述的方法，其特征在于，所述终端设备根据对所述N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用所述第i个同步时隙以及所述同步资源中的位于所述第i个同步时隙之后的L个同步时隙发送所述同步信号，包括：
    在所述信道接入的结果指示所述第i个同步时隙信道可用的情况下，所述终端设备确定使用所述第i个同步时隙以及所述L个同步时隙发送所述同步信号；否则，
    所述终端设备确定不使用所述第i个同步时隙发送所述同步信号。
  6. 根据权利要求5所述的方法，其特征在于，所述N个同步时隙中相邻时隙的间隔小于d微妙，其中d为正整数。
  7. 根据权利要求6所述的方法，其特征在于，d的取值范围为{0，1-10 5}。
  8. 根据权利要求4所述的方法，其特征在于，所述终端设备根据对所述N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用所述第i个同步时隙以及所述同步资源中的位于所述第i个同步时隙之后的L个同步时隙发送所述同步信号，包括：
    在采用第一信道接入方式得到的信道接入的结果指示所述第i个同步时隙的信道可用的情况下，确定使用所述第i个同步时隙发送所述同步信号；
    根据采用第二信道接入方式对所述N个同步时隙中的第(i+j)个同步时隙的信道接入的结果，确定是否使用所述第(i+j)个同步时隙发送所述同步信号，其中，j为小于或等于N的正整数，j≤L。
  9. 根据权利要求8所述的方法，其特征在于，所述根据采用第二信道接入方式对所述N个同步时隙中的第(i+j)个同步时隙的信道接入的结果，确定是否使用所述第(i+j)个同步时隙发送所述同步信号，包括：
    在采用所述第二信道接入方式得到的信道接入的结果指示所述第(i+j)个同步时隙的信道可用的情况下，确定使用所述第(i+j)个同步时隙发送所述同步信号；否则
    所述终端设备确定不使用所述第(i+j)个同步时隙发送所述同步信号。
  10. 根据权利要求8或9所述的方法，其特征在于，所述第一信道接入方式包括第一先听后说LBT方式，所述第二信道接入的方式包括第二LBT方式，其中，所述第一LBT方式的时长大于所述第二LBT的时长。
  11. 根据权利要求4-10任一项所述的方法，其特征在于，
    当所述同步资源中位于所述第i个同步时隙之后的同步时隙的数量大于或等于(M-1)时，L＝(M-1)；
    当所述同步资源中位于所述第i个同步时隙之后的同步时隙的数量小于(M-1)时，L等于所述同步资源中位于所述第i个同步时隙之后的同步时隙的数量；
    其中，M表示为所述终端设备配置的在所述N个同步时隙中可用于发送同步信号的同步时隙的数量，M为小于或等于N的正整数。
  12. 根据权利要求1-11任一项所述的方法，其特征在于，所述终端设备根据在所述同步资源上 进行信道接入的结果，在所述N个同步时隙中占用至少部分同步时隙发送同步信号，包括：
    所述终端设备根据在所述同步资源上至少M个同步时隙进行信道接入的结果，在所述N个同步时隙中占用M个同步时隙发送同步信号；
    在所述终端设备在所述M个同步时隙发送同步信号之后，所述终端设备确定不在所述同步资源上除所述至少M个同步时隙之外的同步时隙进行信道接入，且不使用除所述至少M个同步时隙之外的同步时隙发送所述同步信号；
    其中，M表示为所述终端设备配置的在所述N个同步时隙中可用于发送同步信号的同步时隙的数量，M为小于或等于N的正整数。
  13. 根据权利要求1所述的方法，其特征在于，所述N个同步时隙包括第一同步时隙和第二同步时隙；
    其中，所述终端设备根据在所述同步资源上进行信道接入的结果，在所述N个同步时隙中占用至少部分同步时隙发送同步信号，包括：
    所述终端设备根据对所述第一同步时隙的信道接入的结果，确定是否使用所述第一同步时隙发送所述同步信号；
    所述终端设备确定在所述第一同步时隙不满足发送所述同步信号的要求的情况下，确定使用所述第二同步时隙发送所述同步信号。
  14. 根据权利要求13所述的方法，其特征在于，所述确定使用所述第二同步时隙发送所述同步信号，包括：
    在对所述第二同步时隙进行信道接入得到的信道接入的结果指示所述第二同步时隙的信道可用的情况下，确定使用所述第二同步时隙发送所述同步信号。
  15. 根据权利要求1-14任一项所述的方法，其特征在于，N的取值范围为{1,…,1024}。
  16. 根据权利要求1-15任一项所述的方法，其特征在于，还包括：
    所述终端设备接收配置信息，所述配置信息用于配置所述终端设备在所述N个同步时隙中占用至少部分同步时隙发送同步信号。
  17. 根据权利要求16所述的方法，其特征在于，所述配置信息还用于配置不同子载波间隔的所述同步资源支持的同步时隙的个数、所述侧行链路的同步周期中包括的所述同步资源的个数、所述同步周期的时长和终端设备占用所述N个同步时隙中的同步时隙发送同步信号的个数M中的至少一种，其中，M为小于或等于N的正整数。
  18. 根据权利要求1-15任一项所述的方法，其特征在于，不同子载波间隔的所述同步资源支持的同步时隙的个数、所述侧行链路的同步周期中包括的所述同步资源的个数、所述同步周期的时长和所述终端设备占用所述N个同步时隙中的同步时隙发送同步信号的个数M中的至少一种由协议预先配置，其中，M为小于或等于N的正整数。
  19. 一种无线通信的方法，其特征在于，包括：
    网络设备向终端设备发送配置信息，所述配置信息用于配置所述终端设备在同步资源的N个同步时隙中占用至少部分同步时隙发送同步信号，其中，N为正整数。
  20. 根据权利要求19所述的方法，其特征在于，N的取值范围为{1,…,1024}。
  21. 根据权利要求19或20所述的方法，其特征在于，所述N个同步时隙包括第一同步时隙和第二同步时隙；
    其中，所述第二同步时隙用于在所述第一同步时隙不满足所述终端设备发送所述同步信号的要求的情况下发送所述同步信号。
  22. 根据权利要求19-21任一项所述的方法，其特征在于，所述配置信息还用于配置不同子载波间隔的所述同步资源支持的同步时隙的个数、所述侧行链路的同步周期中包括的所述同步资源的个数、所述同步周期的时长和所述终端设备占用所述N个同步时隙中的同步时隙发送同步信号的个数M中的至少一种，其中，M为小于或等于N的正整数。
  23. 一种终端设备，其特征在于，包括：
    处理单元，用于确定侧行链路的同步资源，其中，所述同步资源包括N个同步时隙，N为正整数；
    通信单元，用于根据在所述同步资源上进行信道接入的结果，在所述N个同步时隙中占用至少部分同步时隙发送同步信号。
  24. 根据权利要求23所述的终端设备，其特征在于，所述通信单元具体用于：
    所述终端设备根据对所述N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用所述第i个同步时隙发送所述同步信号，其中，i为小于或等于N的正整数。
  25. 如权利要求24所述的终端设备，其特征在于，所述通信单元具体用于：
    在所述信道接入的结果指示所述第i个同步时隙信道可用的情况下，所述终端设备确定使用所述第i个同步时隙发送所述同步信号；否则
    所述终端设备确定不使用所述第i个同步时隙发送所述同步信号。
  26. 根据权利要求23所述的终端设备，其特征在于，所述通信单元具体用于：
    所述终端设备根据对所述N个同步时隙中的第i个同步时隙的信道接入的结果，确定是否使用所述第i个同步时隙以及所述同步资源中的位于所述第i个同步时隙之后的L个同步时隙发送所述同步信号，其中，i、L为小于或等于N的正整数，(i+L)≤N。
  27. 如权利要求26所述的终端设备，其特征在于，所述通信单元具体用于：
    在所述信道接入的结果指示所述第i个同步时隙信道可用的情况下，所述终端设备确定使用所述第i个同步时隙以及所述L个同步时隙发送所述同步信号；否则，
    所述终端设备确定不使用所述第i个同步时隙发送所述同步信号。
  28. 根据权利要求27所述的终端设备，其特征在于，所述N个同步时隙中相邻时隙的间隔小于d微妙，其中d为正整数。
  29. 根据权利要求28所述的终端设备，其特征在于，d的取值范围为{0，1-10 5}。
  30. 根据权利要求26所述的终端设备，其特征在于，所述通信单元具体用于：
    在采用第一信道接入方式得到的信道接入的结果指示所述第i个同步时隙的信道可用的情况下，确定使用所述第i个同步时隙发送所述同步信号；
    根据采用第二信道接入方式对所述N个同步时隙中的第(i+j)个同步时隙的信道接入的结果，确定是否使用所述第(i+j)个同步时隙发送所述同步信号，其中，j为小于或等于N的正整数，j≤L。
  31. 根据权利要求30所述的终端设备，其特征在于，所述通信单元具体用于：
    在采用所述第二信道接入方式得到的信道接入的结果指示所述第(i+j)个同步时隙的信道可用的情况下，确定使用所述第(i+j)个同步时隙发送所述同步信号；否则
    所述终端设备确定不使用所述第(i+j)个同步时隙发送所述同步信号。
  32. 根据权利要求30或31所述的终端设备，其特征在于，所述第一信道接入方式包括第一先听后说LBT方式，所述第二信道接入的方式包括第二LBT方式，其中，所述第一LBT方式的时长大于所述第二LBT的时长。
  33. 根据权利要求26-32任一项所述的终端设备，其特征在于，
    当所述同步资源中位于所述第i个同步时隙之后的同步时隙的数量大于或等于(M-1)时，L＝(M-1)；
    当所述同步资源中位于所述第i个同步时隙之后的同步时隙的数量小于(M-1)时，L等于所述同步资源中位于所述第i个同步时隙之后的同步时隙的数量；
    其中，M表示为所述终端设备配置的在所述N个同步时隙中可用于发送同步信号的同步时隙的数量，M为小于或等于N的正整数。
  34. 根据权利要求23-33任一项所述的终端设备，其特征在于，所述通信单元具体用于：
    所述终端设备根据在所述同步资源上至少M个同步时隙进行信道接入的结果，在所述N个同步时隙中占用M个同步时隙发送同步信号；
    在所述终端设备在所述M个同步时隙发送同步信号之后，所述终端设备确定不在所述同步资源上除所述至少M个同步时隙之外的同步时隙进行信道接入，且不使用除所述至少M个同步时隙之外的同步时隙发送所述同步信号；
    其中，M表示为所述终端设备配置的在所述N个同步时隙中可用于发送同步信号的同步时隙的数量，M为小于或等于N的正整数。
  35. 根据权利要求23所述的终端设备，其特征在于，所述N个同步时隙包括第一同步时隙和第二同步时隙；
    其中，所述通信单元具体用于：
    所述终端设备根据对所述第一同步时隙的信道接入的结果，确定是否使用所述第一同步时隙发送所述同步信号；
    所述终端设备确定在所述第一同步时隙不满足发送所述同步信号的要求的情况下，确定使用所述第二同步时隙发送所述同步信号。
  36. 根据权利要求35所述的终端设备，其特征在于，所述通信单元具体用于：
    在对所述第二同步时隙进行信道接入得到的信道接入的结果指示所述第二同步时隙的信道可用的情况下，确定使用所述第二同步时隙发送所述同步信号。
  37. 根据权利要求23-36任一项所述的终端设备，其特征在于，N的取值范围为{1,…,1024}。
  38. 根据权利要求23-37任一项所述的终端设备，其特征在于，所述通信单元还用于：
    接收配置信息，所述配置信息用于配置所述终端设备在所述N个同步时隙中占用至少部分同步时隙发送同步信号。
  39. 根据权利要求38所述的终端设备，其特征在于，所述配置信息还用于配置不同子载波间隔的所述同步资源支持的同步时隙的个数、所述侧行链路的同步周期中包括的所述同步资源的个数、所述同步周期的时长和终端设备占用所述N个同步时隙中的同步时隙发送同步信号的个数M中的至少一种，其中，M为小于或等于N的正整数。
  40. 根据权利要求23-37任一项所述的终端设备，其特征在于，不同子载波间隔的所述同步资源支持的同步时隙的个数、所述侧行链路的同步周期中包括的所述同步资源的个数、所述同步周期的时长和所述终端设备占用所述N个同步时隙中的同步时隙发送同步信号的个数M中的至少一种由协议预先配置，其中，M为小于或等于N的正整数。
  41. 一种网络设备，其特征在于，包括：
    通信单元，用于网络设备向终端设备发送配置信息，所述配置信息用于配置所述终端设备在同步资源的N个同步时隙中占用至少部分同步时隙发送同步信号，其中，N为正整数。
  42. 根据权利要求41所述的网络设备，其特征在于，N的取值范围为{1,…,1024}。
  43. 根据权利要求41或42所述的网络设备，其特征在于，所述N个同步时隙包括第一同步时隙和第二同步时隙；
    其中，所述第二同步时隙用于在所述第一同步时隙不满足所述终端设备发送所述同步信号的要求的情况下发送所述同步信号。
  44. 根据权利要求41-43任一项所述的网络设备，其特征在于，所述配置信息还用于配置不同子载波间隔的所述同步资源支持的同步时隙的个数、所述侧行链路的同步周期中包括的所述同步资源的个数、所述同步周期的时长和所述终端设备占用所述N个同步时隙中的同步时隙发送同步信号的个数M中的至少一种，其中，M为小于或等于N的正整数。
  45. 一种终端设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至18中任一项所述的方法。
  46. 一种网络设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求19至22中任一项所述的方法。
  47. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至18中任一项所述的方法；或
    执行如权利要求19至22中任一项所述的方法。
  48. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至19中任一项所述的方法；或
    执行如权利要求20至23中任一项所述的方法。
  49. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至18中任一项所述的方法；或
    执行如权利要求19至22中任一项所述的方法。
  50. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求1至18中任一项所述的方法；或
    执行如权利要求19至22中任一项所述的方法。
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Citations (3)

* Cited by examiner, † Cited by third party
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CN109041199A (zh) * 2018-07-16 2018-12-18 宇龙计算机通信科技(深圳)有限公司 一种同步信号的传输方法和装置
CN110035028A (zh) * 2019-03-29 2019-07-19 宇龙计算机通信科技(深圳)有限公司 基于非授权频谱的同步信号传输方法、装置和存储介质
CN110474729A (zh) * 2018-05-11 2019-11-19 展讯通信（上海）有限公司 非授权频谱中同步信号块组的发送、接收方法及装置、存储介质、基站、用户设备

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CN110474729A (zh) * 2018-05-11 2019-11-19 展讯通信（上海）有限公司 非授权频谱中同步信号块组的发送、接收方法及装置、存储介质、基站、用户设备
CN109041199A (zh) * 2018-07-16 2018-12-18 宇龙计算机通信科技(深圳)有限公司 一种同步信号的传输方法和装置
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