WO2024250281A1 - 无线通信方法、第一终端设备以及第二终端设备 - Google Patents

无线通信方法、第一终端设备以及第二终端设备 Download PDF

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Publication number
WO2024250281A1
WO2024250281A1 PCT/CN2023/099404 CN2023099404W WO2024250281A1 WO 2024250281 A1 WO2024250281 A1 WO 2024250281A1 CN 2023099404 W CN2023099404 W CN 2023099404W WO 2024250281 A1 WO2024250281 A1 WO 2024250281A1
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WO
WIPO (PCT)
Prior art keywords
resource
terminal device
transmission resource
wake
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/099404
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English (en)
French (fr)
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WO2024250281A9 (zh
Inventor
丁伊
赵振山
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Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2023/099404 priority Critical patent/WO2024250281A1/zh
Priority to MX2025014781A priority patent/MX2025014781A/es
Priority to EP23940164.9A priority patent/EP4686127A4/en
Priority to CN202380094958.9A priority patent/CN120770132A/zh
Publication of WO2024250281A1 publication Critical patent/WO2024250281A1/zh
Priority to US19/338,290 priority patent/US20260020062A1/en
Publication of WO2024250281A9 publication Critical patent/WO2024250281A9/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal where the received signal is a power saving command
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of communications, and specifically to a wireless communication method, a first terminal device, and a second terminal device.
  • the 3rd Generation Partnership Project (3GPP) standard protocol introduced the discontinuous reception (DRX) energy-saving strategy in the Long Term Evolution (LTE) system.
  • the basic mechanism of DRX is to configure a DRX cycle for (User Equipment, UE).
  • the DRX cycle consists of an activation period (On Duration) and a sleep period (Opportunity for DRX): During the activation period, the UE monitors and receives the Physical Downlink Control Channel (PDCCH); during the sleep period, the UE does not receive PDCCH to reduce power consumption.
  • PDCCH Physical Downlink Control Channel
  • R17 For the sidelink (SL) system, Release 17 (R17) introduced SL DRX to reduce the energy consumption of the terminal.
  • the present application provides a wireless communication method, a first terminal device and a second terminal device, which can not only reduce the energy consumption of the terminal but also ensure the reliability of side transmission.
  • an embodiment of the present application provides a wireless communication method, including:
  • LBT listen-before-talk
  • the activation time period corresponding to the wake-up signal includes a second transmission resource, and the second transmission resource is used to transmit the first physical side channel.
  • an embodiment of the present application provides a wireless communication method, including:
  • the activation time period corresponding to the wake-up signal includes a second transmission resource, and the second transmission resource is used to transmit the first physical side channel.
  • an embodiment of the present application provides a second terminal device for executing the method in the first aspect or its respective implementations mentioned above.
  • the second terminal device includes a functional module for executing the method in the first aspect or its respective implementations mentioned above.
  • the second terminal device may include a processing unit, which is used to perform functions related to information processing.
  • the processing unit may be a processor.
  • the second terminal device may include a sending unit and/or a receiving unit.
  • the sending unit is used to perform functions related to sending, and the receiving unit is used to perform functions related to receiving.
  • the sending unit may be a transmitter or a transmitter, and the receiving unit may be a receiver or a receiver.
  • the second terminal device is a communication chip, the sending unit may be an input circuit or an interface of the communication chip, and the sending unit may be an output circuit or an interface of the communication chip.
  • an embodiment of the present application provides a first terminal device for executing the method in the second aspect or its respective implementations mentioned above.
  • the first terminal device includes a functional module for executing the method in the second aspect or its respective implementations mentioned above.
  • the first terminal device may include a processing unit, and the processing unit is used to perform functions related to information processing.
  • the processing unit may be a processor.
  • the first terminal device may include a sending unit and/or a receiving unit.
  • the sending unit is used to perform functions related to sending, and the receiving unit is used to perform functions related to receiving.
  • the sending unit may be a transmitter or a transmitter, and the receiving unit may be a receiver or a receiver.
  • the first terminal device is a communication chip, the receiving unit may be an input circuit or an interface of the communication chip, and the sending unit may be an output circuit or an interface of the communication chip.
  • an embodiment of the present application provides a second terminal device, including a transceiver, a processor, and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, so that the transceiver and/or the processor executes the method in the first aspect or its various implementations involved above.
  • the number of the processor is one or more, and the number of the memory is one or more.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • the transceiver includes a transmitter (transmitter) and a receiver (receiver).
  • an embodiment of the present application provides a first terminal device, including a transceiver, a processor, and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, so that the transceiver and /or the processor executes the method in the second aspect or its various implementations involved above.
  • the number of the processor is one or more, and the number of the memory is one or more.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • the transceiver includes a transmitter (transmitter) and a receiver (receiver).
  • an embodiment of the present application provides a chip for implementing the method in any one of the first to second aspects or their respective implementations mentioned above.
  • the chip includes: a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the method in any one of the first to second aspects or their respective implementations mentioned above.
  • an embodiment of the present application provides a computer-readable storage medium for storing a computer program.
  • the computer program When the computer program is run on a computer, the computer executes the method in any aspect of the first to second aspects mentioned above or in each of their implementations.
  • an embodiment of the present application provides a computer program product, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method of any one of the first to second aspects mentioned above or any of their implementations.
  • an embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the method in any one of the first to second aspects mentioned above or in each of their implementations.
  • the method includes: performing LBT on at least one first transmission resource; sending a wake-up signal to the second terminal device on the first transmission resource in which LBT is successful among the at least one first transmission resource; wherein the activation time period corresponding to the wake-up signal includes the second transmission resource, and the second transmission resource is used to transmit the first physical side channel.
  • the second transmission resource used to transmit the first physical side channel is associated with the activation time period corresponding to the wake-up signal, so that the wake-up signal can be combined with the side link unauthorized system, thereby not only reducing the energy consumption of the second terminal device, but also ensuring the transmission reliability of the first physical side channel.
  • the first terminal device sends a wake-up signal to the second terminal device on the first transmission resource in which LBT is successful among the at least one first transmission resource.
  • the at least one first transmission resource is a plurality of transmission resources, the transmission reliability of the wake-up signal can be guaranteed, and accordingly, the transmission reliability of the first physical side channel can be improved.
  • FIG1 is a schematic diagram of a communication system architecture provided by the present application.
  • FIG2 is a schematic diagram of another communication system architecture provided by the present application.
  • FIG3 is a schematic diagram of sideline communication within a network coverage area provided by the present application.
  • FIG4 is a schematic diagram of a partial network coverage side communication provided by the present application.
  • FIG5 is a schematic diagram of external line communication outside a network coverage provided by the present application.
  • FIG6 is a schematic diagram of a unicast sideline communication provided by the present application.
  • FIG. 7 is an example of resource selection in the second mode provided by the present application.
  • FIG8 is an example of DRX provided in the present application.
  • FIG. 9 is an example of an energy-saving signal provided by the present application.
  • FIG10 is a schematic flowchart of the wireless communication method provided in the present application.
  • FIG. 11 is another example of a wireless communication method provided in an embodiment of the present application.
  • FIG. 12 is a schematic block diagram of a first terminal device provided in an embodiment of the present application.
  • FIG. 13 is a schematic block diagram of a second terminal device provided in an embodiment of the present application.
  • FIG. 14 is a schematic block diagram of a communication device provided in an embodiment of the present application.
  • FIG. 15 is a schematic block diagram of a chip provided in an embodiment of the present application.
  • the communication systems to which the technical solutions of the embodiments of the present application can be applied include but are not limited to: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, 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, NR system evolution system, LTE on unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, general Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), 5th-Generation (5G) or other communication systems.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • the embodiments of the present application may be applicable to any terminal device to terminal device communication framework.
  • the embodiments of the present application may be applicable to communication frameworks such as device to device (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC) communication, vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication.
  • D2D device to device
  • M2M machine to machine
  • MTC machine type communication
  • V2V vehicle to vehicle
  • V2X vehicle to everything
  • CA carrier aggregation
  • DC dual connectivity
  • SA standalone
  • the communication system of the present application may also be applied to unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system of the present application may also be applied to licensed spectrum, where the licensed spectrum may also be considered as an unshared spectrum.
  • the present application describes various embodiments in conjunction with network devices and terminal devices.
  • the terminal device involved in the present application may be any device or apparatus configured with a physical layer and a media access control layer.
  • the terminal device involved in the present application may also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.
  • UE user equipment
  • access terminal user unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless communication equipment
  • user agent or user device etc.
  • the terminal device involved in the present application may be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other linear processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolving Public Land Mobile Network (PLMN) network, etc.
  • STATION, ST in a WLAN
  • a cellular phone a cordless phone
  • Session Initiation Protocol (SIP) phone Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • Wearable devices can also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also functions that are implemented through software support. In a broad sense, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.
  • the terminal device involved in the present application may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.
  • VR virtual reality
  • AR augmented reality
  • terminal equipment involved in this application can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).
  • the network device involved in the present application may be a device for communicating with a terminal device.
  • the network equipment involved in the present application can provide services for a cell, that is, the terminal equipment communicates with the network equipment through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources).
  • the cell may be a cell corresponding to the network equipment (for example, a base station).
  • the cell may belong to a macro base station or a base station corresponding to a small cell (Small cell).
  • the small cell (Small cell) may include: metro cell, micro 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 network device can be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, wearable device, and network equipment or base station (gNB) in NR network, or a network device in the future evolved PLMN network, or a network device in NTN network, etc.
  • AP access point
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolved base station
  • gNB network equipment or base station
  • the term "and/or” in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the term "at least one" is only a description of the combination relationship of the listed objects, indicating that there can be one or more items.
  • at least one of the following: A, B, C can represent the following combinations: A exists alone, B exists alone, C exists alone, A and B exist at the same time, and at the same time There are A and C, there are B and C, there are A, B and C.
  • the term “plurality” means two or more.
  • the character "/" generally indicates that the objects before and after are in an "or” relationship.
  • the term “correspondence” may indicate that there is a direct or indirect correspondence relationship between the two, or may indicate that there is an association relationship between the two, or may be a relationship between indicating and being indicated, configuring and being configured, etc.
  • the term “indication” may be a direct indication, an indirect indication, or may indicate an association relationship.
  • A indicates B, which may indicate that A directly indicates B, for example, B can be obtained through A; it may also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it may also indicate that there is an association relationship between A and B.
  • predefined or “preconfigured” may be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit its specific implementation method.
  • predefined or “preconfigured” may refer to an agreement by a protocol.
  • the "protocol” may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, an NR protocol, WiFi, and related protocols used in future communication systems, and the present application does not limit this.
  • the term “when" may be interpreted as “if” or “if” or “when! or “in response to” and other similar descriptions.
  • the phrase “if determined” or “if (stated condition or event) is detected” can be interpreted as “when determined” or “in response to determining” or “when (stated condition or event) is detected” or “in response to detecting (stated condition or event)” and other similar descriptions.
  • the terms “first”, “second”, “third”, “fourth”, “A”, “B”, etc. are used to distinguish different objects, not to describe a specific order.
  • the terms “including” and “having” and any variations thereof are intended to cover non-exclusive inclusions.
  • Sidelink transmission technology is a transmission technology for communication between terminals. It is different from the traditional cellular system where communication data is received or sent by the base station, so it has higher spectrum efficiency and lower transmission delay.
  • the Internet of Vehicles system also uses terminal-to-terminal direct communication.
  • FIG1 is a schematic diagram of a communication system architecture provided by the present application.
  • the transmission resources of the vehicle-mounted terminals 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 a semi-static transmission to the terminal.
  • FIG2 is a schematic diagram of another communication system architecture provided by the present application.
  • the vehicle terminals (vehicle terminals 131 and vehicle terminals 132) autonomously select transmission resources on the sidelink resources for data transmission.
  • the vehicle terminals can select transmission resources randomly or by listening.
  • sideline communication according to the network coverage of the communicating terminals, it can be divided into sideline communication within network coverage, sideline communication with partial network coverage, and sideline communication outside network coverage.
  • FIG3 is a schematic diagram of sideline communication within a network coverage area provided by the present application.
  • all terminals performing sideline communication are within the coverage of the base station, so that the above terminals can perform sideline communication based on the same sideline configuration by receiving the configuration signaling of the base station.
  • FIG4 is a schematic diagram of a partial network coverage side communication provided by the present application.
  • some terminals performing sidelink communication are located within the coverage of the base station. These terminals can receive the configuration signaling of the base station and perform sidelink communication according to the configuration of the base station. However, terminals outside the network coverage cannot receive the configuration signaling of the base station. In this case, the terminals outside the network coverage will determine the sidelink configuration and perform sidelink communication based on the pre-configuration information and the information carried in the Physical Sidelink Broadcast Channel (PSBCH) sent by the terminals within the network coverage.
  • PSBCH Physical Sidelink Broadcast Channel
  • FIG5 is a schematic diagram of external line communication outside a network coverage provided by the present application.
  • all terminals performing sideline communications are located outside network coverage, and all terminals determine sideline configurations according to pre-configuration information to perform sideline communications.
  • FIG6 is an example of the physical layer structure of the SL provided in the present application.
  • the physical layer structure of SL includes a physical sidelink shared channel (PSSCH) and a physical sidelink control channel (PSCCH), where PSCCH is used to transmit (or send) the first sidelink control information, PSSCH is used to carry data and the second sidelink control information, and PSCCH and PSSCH are sent in the same time slot.
  • the first sidelink control information is carried in PSCCH, which mainly includes fields related to resource sensing, so that other UEs can exclude and select resources after decoding.
  • PSSCH also carries second sidelink control information, which mainly includes fields related to data demodulation, so that other UEs can demodulate the data in the PSSCH.
  • 3GPP defines two resource allocation modes: a first mode and a second 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 dynamically schedule resources for the terminal, or allocate semi-static transmission resources to the terminal.
  • the terminal is located within the coverage of the network, and the network allocates transmission resources for the terminal to use for sidelink transmission.
  • the base station sends downlink control information to the terminal, and the downlink control information indicates one or more resources, and the terminal transmits data on the indicated resources.
  • the base station configures an unlicensed sidelink transmission resource for the terminal, also known as Sidelink Configured Grant (SL CG), which is generally a periodic unlicensed resource. When the terminal has data transmission, it can directly use the unlicensed sidelink transmission resource.
  • SL CG is divided into type 1 (type-1) sidelink unlicensed and type 2 (type-2) sidelink unlicensed.
  • Type-1 SL CG The network configures sidelink unauthorized transmission resources and transmission parameters for the UE through RRC signaling.
  • Type-2 SL CG The network configures some transmission parameters for the UE through RRC signaling and activates the sidelink authorization-free through DCI signaling.
  • the DCI is used to configure the sidelink transmission resources. If the network wants the UE to report sidelink feedback information, the DCI is also used to configure PUCCH transmission resources.
  • the terminal selects one or more resources in the resource pool for data transmission. For example, for sideline communication within the network coverage as shown in Figure 3, the terminal can autonomously select transmission resources from the resource pool configured by the network for sideline transmission. For another example, for sideline communication outside the network coverage as shown in Figure 5, the terminal can autonomously select transmission resources from the pre-configured resource pool for sideline transmission.
  • the terminal uses the first sideline control information to indicate reserved transmission resources in the PSCCH while performing data transmission in the PSSCH.
  • the terminal determines a resource selection window and a resource listening window, excludes candidate resources in the resource selection window according to resources indicated by the first sideline control information sent by other terminals intercepted in the resource listening window and/or according to un-intercepted time slots in the resource listening window, and selects transmission resources from the remaining candidate resources after the resource exclusion.
  • FIG. 7 is an example of resource selection in the second mode provided by the present application.
  • the terminal triggers resource selection or reselection in time slot n or time slot n is the time slot in which the high layer triggers the physical layer to report the candidate resource set.
  • the resource selection window starts from n+T1 and ends at n+T2.
  • T proc,1 is 3, 5, 9, 17 time slots.
  • the terminal determines T2 min from the value set according to the priority of its own data to be sent. For example, when the subcarrier spacing is 15kHz, the terminal determines T2 min from the set ⁇ 1, 5, 10, 20 ⁇ according to the priority of its own data to be sent.
  • T2 min is greater than or equal to the remaining delay budget of the service
  • T2 is equal to the remaining delay budget of the service.
  • the remaining delay budget is the difference between the corresponding time of the data delay requirement and the current time. For example, the delay requirement for a data packet arriving at time slot n is 50 milliseconds. Assuming that a time slot is 1 millisecond, if the current time is time slot n, the remaining delay budget is 50 milliseconds. If the current time is time slot n+20, the remaining delay budget is 30 milliseconds.
  • the terminal performs resource monitoring from n-T0 to nT proc,0 (excluding nT proc,0 ), and the value of T0 is 100 or 1100 milliseconds.
  • T proc,0 is 1, 1, 2, 4 time slots.
  • the terminal performs resource monitoring in the time slots belonging to the resource pool used by it within the monitoring window.
  • the terminal monitors the first sideline control information sent by other terminals in each time slot (except its own transmission time slot).
  • slot n triggers resource selection or reselection
  • the terminal can use the result of resource monitoring from n-T0 to nT proc,0 .
  • the resource listening process may include the following steps:
  • the terminal uses the candidate resources in the resource selection window as resource set A, and any candidate resource in set A is recorded as R(x,y), where x and y are used to indicate the frequency domain position and time domain position of the resource, respectively.
  • x indicates the subchannel where the resource R(x,y) starts in the frequency domain
  • y indicates the time slot where the resource R(x,y) is located
  • R(x,y) represents L_subchannel consecutive subchannels starting from subchannel x in time slot t y , where L_subchannel is configured to the physical layer by the upper layer.
  • the initial number of resources in set A is recorded as M total
  • (t 1 ,t 2 ,t 3 ...) is recorded as the set of time slots belonging to the resource pool.
  • the terminal excludes resources in resource set A based on the un-listened time slots in the resource listening window and/or the resource listening results in the resource listening window.
  • the terminal determines whether resource R(x, y) or a series of periodic resources corresponding to resource R(x, y) overlaps with the time slot determined based on the unlistened time slots, and if so, excludes resource R(x, y) from resource set A.
  • time slot tm is an unlistened time slot
  • the time slots with horizontal and diagonal line shadows mapped from time slot tm are time slots determined based on the unlistened time slots, and if these time slots overlap with resource R(x, y) or a series of periodic resources corresponding to resource R(x, y), the terminal excludes resource R(x, y) from resource set A.
  • the terminal determines whether resource R(x, y) or a series of periodic resources corresponding to resource R(x, y) overlaps with the resource determined based on the monitored first sideline control information and the SL-RSRP determined based on the monitored first sideline control information is greater than the SL-RSRP threshold. If they overlap and meet the SL-RSRP condition, resource R(x, y) is excluded from resource set A. As shown in (b) of FIG7 , the terminal monitors the first sideline control information sent by other terminals in time slot tm, and excludes the resource R(x, y) based on the first sideline control information.
  • the resources determined by the first side control information are resources 1-6.
  • resources 1-6 overlap with resources R(x, y) or a series of periodic resources corresponding to resources R(x, y) and the SL-RSRP determined according to the first side control information heard is greater than the SL-RSRP threshold, then resources R(x, y) are excluded from resource set A.
  • the SL-RSRP threshold is raised by 3dB, resource set A is initialized, and step 1 is re-executed until the number of remaining resources in resource set A is greater than or equal to M total *X after resource exclusion.
  • the physical layer reports the resource set A after resource exclusion as a candidate resource set to the upper layer.
  • the X is configured to the physical layer by the upper layer of the terminal.
  • the upper layer randomly selects resources from the reported candidate resource set to send data. That is, the terminal randomly selects resources from the candidate resource set to send data.
  • Unlicensed spectrum is a spectrum that can be used for radio equipment communications, which is divided by countries and regions.
  • This spectrum is generally considered to be a shared spectrum, that is, as long as the communication equipment in different communication systems meets the regulatory requirements set by the country or region on this spectrum, they can use this spectrum without applying for exclusive spectrum authorization from the government.
  • the WIFI system is deployed on the unlicensed spectrum.
  • the terminal When NR SL technology operates on unlicensed spectrum, the terminal needs to perform LBT. Only after LBT is successful can it access the channel for transmission.
  • LBT Specific categories of LBT include:
  • Type 1 Generate a random count value. If the monitored time slot is idle, it will be reduced by 1. If it is busy, it will not be reduced. When it is reduced to 0, the channel can be accessed for transmission. If the count value is reduced to 0 and the communication device has no data to transmit, when the communication device needs to send data, there is no need to regenerate the count value. Only a LBT with a fixed time length is required. If the LBT is successful, that is, the channel is idle within the fixed length, the channel is accessed.
  • Type 2A The communication device can monitor a channel with a length of 25 microseconds (denoted as Tshort). If the monitoring time slots within Tshort are all idle, the communication device can directly access the channel.
  • Type 2B The communication device can monitor a channel of 16 microseconds in length (denoted as Tf). If the monitoring time slot within Tf is idle, the communication device can directly access the channel.
  • Type 2C The communication device can directly access the channel without LBT. This type can only be applied when the interval between the current transmission distance and the previous transmission distance is less than or equal to 16 microseconds. At the same time, the length of this transmission does not exceed 584 microseconds.
  • UE user equipment
  • PDCCH physical downlink control channel
  • DRX discontinuous reception
  • FIG8 is an example of DRX provided in the present application.
  • the basic mechanism of DRX is to configure a DRX cycle for the UE.
  • the DRX cycle consists of "On Duration" and "Opportunity for DRX”: During the "On Duration” time, the UE monitors and receives PDCCH (activation period); during the "Opportunity for DRX” time, the UE does not receive PDCCH to reduce power consumption (sleep period).
  • the terminal controls the terminal to be in an active state or a dormant state according to some timer parameters configured by the network.
  • the length of the "On Duration" time period can be indicated by the drx-onDurationTimer parameter
  • the starting position of the DRX Cycle can be indicated by drx-LongCycleStartOffset and drx-SlotOffset.
  • the terminal When the terminal detects PDCCH during the "On Duration" time period (that is, before the On duration timer is reduced to 0), it will also start timers such as Inactivity timer and re-transmission timer to extend the activation state to receive scheduled data or retransmission.
  • timers such as Inactivity timer and re-transmission timer to extend the activation state to receive scheduled data or retransmission.
  • the traditional terminal energy-saving mechanism is mainly DRX.
  • DRX When DRX is configured, the terminal monitors PDCCH during the DRX ON Duration. If data scheduling is received during the ON Duration, the terminal continues to monitor PDCCH based on the control of the DRX timer until the data transmission is completed; otherwise, if the terminal does not receive data scheduling during the DRX ON Duration, the terminal enters a dormant state to achieve energy saving.
  • DRX is an energy-saving control mechanism with the DRX cycle as the time granularity, so it cannot achieve optimal power consumption control. For example, even if the terminal does not have data scheduling, the terminal must monitor PDCCH during the periodic start of the DRX ON Duration timer, so there is still power waste.
  • NR energy saving enhancement introduces a wake-up signal.
  • the standardized wake-up signal is used in conjunction with the DRX mechanism.
  • the specific technical principle is that the terminal receives an indication of the wake-up signal before the DRX ON duration.
  • FIG. 9 is an example of a power saving signal provided by the present application.
  • a wake-up signal is used to "wake up” the terminal so that it can monitor PDCCH during the DRX ON duration; on the contrary, when the terminal has no data transmission in a DRX cycle, the wake-up signal is not used to "wake up” the terminal, and the terminal does not need to monitor PDCCH during the DRX ON Duration.
  • the terminal can omit PDCCH monitoring during the DRX ON duration, thereby achieving energy saving.
  • the energy-saving signal can be a sequence-based signal or a PDCCH channel-based signal.
  • the use of the PDCCH channel to carry energy-saving indication information has the following advantages. Therefore, using PDCCH as an energy-saving signal in the NR system has the following advantages:
  • the existing PDCCH design can be directly reused, including coding, scrambling, resource mapping, search space, control resource set (Control Resource Set, CORESET) and other aspects, so the workload of standardization is relatively small.
  • the PDCCH Since the existing system already supports the PDCCH channel, the PDCCH has good compatibility and multiplexing characteristics with other channels such as PDSCH.
  • SL DRX has been introduced in the SL version of R17, but SL WUS has not been introduced for further energy saving and power saving.
  • the basic version of SL-U is being discussed, that is, the SL system working in the unlicensed frequency band.
  • WUS in SL-U may have problems such as LBT failure and inability to transmit, how WUS is transmitted, and how data is transmitted.
  • the present application provides a wireless communication method, a first terminal device, and a second terminal device, which can not only reduce the energy consumption of the terminal, but also ensure the reliability of side transmission.
  • the wireless communication method provided in the present application is exemplarily described below.
  • FIG10 is a schematic flow chart of a wireless communication method 200 provided in an embodiment of the present application, and the wireless communication method 200 can be interactively executed by a first terminal device and a second terminal device.
  • the first terminal device and/or the second terminal device shown in FIG2 can be any terminal device capable of sideline communication.
  • the first terminal device and/or the second terminal device shown in FIG2 can be the terminals shown in FIG1 to FIG5.
  • the method 200 may include some or all of the following contents:
  • the first terminal device performs Listen Before Talk (LBT) on at least one first transmission resource.
  • LBT Listen Before Talk
  • the at least one first transmission resource may be one first transmission resource or multiple first transmission resources.
  • the first terminal device performs LBT on the at least one first transmission resource, which can be understood as or equivalently replaced by: the first terminal device performs LBT on each first transmission resource in the at least one first transmission resource, or the first terminal device performs LBT before each first transmission resource in the at least one first transmission resource; or the first terminal device performs LBT on the resource before each first transmission resource in the at least one first transmission resource.
  • the first terminal device when the first terminal device operates on an unlicensed spectrum, the first terminal device performs LBT on at least one first transmission resource, and the type of the LBT may be any one of the following:
  • Type 1 Generate a random count value. If the monitored time slot is idle, it will be reduced by 1. If it is busy, it will not be reduced. When it is reduced to 0, the channel can be accessed for transmission. If the count value is reduced to 0 and the communication device has no data to transmit, when the communication device needs to send data, there is no need to regenerate the count value. Only a LBT with a fixed time length is required. If the LBT is successful, that is, the channel is idle within the fixed length, the channel is accessed.
  • Type 2A The communication device can monitor a channel with a length of 25 microseconds (denoted as Tshort). If the monitoring time slots within Tshort are all idle, the communication device can directly access the channel.
  • Type 2B The communication device can monitor a channel of 16 microseconds in length (denoted as Tf). If the monitoring time slot within Tf is idle, the communication device can directly access the channel.
  • Type 2C The communication device can directly access the channel without LBT. This type can only be applied when the interval between the current transmission distance and the previous transmission distance is less than or equal to 16 microseconds. At the same time, the length of this transmission does not exceed 584 microseconds.
  • the first terminal device sends a wake-up signal to the second terminal device on the first transmission resource in which LBT is successful among the at least one first transmission resource; wherein the activation time period corresponding to the wake-up signal includes a second transmission resource, and the second transmission resource is used to transmit the first physical side channel. Accordingly, the second terminal device detects (e.g., blindly detects) the wake-up signal in the resource pool.
  • the resource pool can be network-configured or pre-configured.
  • the first terminal device performs LBT before each first transmission resource, and if LBT is successful, sends a wake-up signal on the corresponding first transmission resource. For example, the first terminal device performs LBT before resource 1, resource 2, and resource 3. When LBT is successful before resource 1, a wake-up signal is sent on resource 1. Similarly, if LBT is successful before resource 2 or 3, a wake-up signal is sent on resource 2 or 3.
  • the activation time period refers to a time period during which the wake-up signal is activated.
  • the first terminal device when the at least one first transmission resource is a plurality of first transmission resources, the first terminal device sends at least one wake-up signal to the second terminal device on at least one first transmission resource in which LBT is successful among the plurality of first transmission resources.
  • the activation time period corresponding to the at least one wake-up signal includes a second transmission resource, and the second transmission resource is used to transmit the first physical side channel.
  • different wake-up channels in the at least one wake-up signal may correspond to (for example, activate) the same time period, or may correspond to (for example, activate) different time periods, and this application does not specifically limit this.
  • the activation time period refers to a time period during which the opposite end of the first terminal device (including the second terminal device) can receive a physical side channel (such as PSCCH and/or PSSCH).
  • a physical side channel such as PSCCH and/or PSSCH.
  • the activation time period corresponding to the wake-up signal includes one or more second transmission resources, and the one or more second transmission resources are used to transmit the first physical side channel.
  • the second transmission resource is used to transmit a transmission block (TB) carried on the first physical side channel.
  • TB transmission block
  • the second transmission resource is used for the initial transmission of the TB, or in other words, the second transmission resource is used for the first transmission of the TB.
  • the second transmission resource used to transmit the first physical side channel is associated with the activation time period corresponding to the wake-up signal, so that the wake-up signal can be combined with the side link unauthorized system, thereby not only reducing the energy consumption of the second terminal device, but also ensuring the transmission reliability of the first physical side channel.
  • the first terminal device sends a wake-up signal to the second terminal device on the first transmission resource in which LBT is successful among at least one first transmission resource.
  • the at least one first transmission resource is a plurality of transmission resources, the transmission reliability of the wake-up signal can be guaranteed, and accordingly, the transmission reliability of the first physical side channel can be improved.
  • the method 200 may further include:
  • the first terminal device sends the first physical side channel to the second terminal device on the second transmission resource.
  • the second terminal device detects (eg, blindly detects) the first physical side channel in a resource pool.
  • the resource pool may be network-configured or pre-configured.
  • the first terminal device if the first terminal device has data or information that needs to be sent to the second terminal device, the first terminal device sends the first physical side channel to the second terminal device on the second transmission resource.
  • the first physical side channel carries the data or information that the first terminal device needs to send to the second terminal device.
  • the method 200 may further include:
  • the first terminal device determines the second transmission resource.
  • the first terminal device determines the second transmission resource after successfully performing LBT on part or all of the at least one first transmission resource and/or sending a wake-up signal to the second terminal device. For example, the first terminal device determines the second transmission resource within an activation time period corresponding to the wake-up signal.
  • the first terminal device may first determine at least one first transmission resource, then perform LBT on the at least one first transmission resource, and send a wake-up signal to the second terminal device on the first transmission resource on which LBT is successfully performed among the at least one first transmission resource; then the first terminal device determines the second transmission resource within the activation time period corresponding to the wake-up signal.
  • the first terminal device may re-determine the at least one first transmission resource and perform LBT on the re-determined at least one first transmission resource until the first terminal device successfully performs LBT on part or all of the at least one first transmission resource that has been re-determined.
  • the first terminal device sends a wake-up signal to the second terminal device on the first transmission resource on which the LBT succeeds among the at least one first transmission resource that has been re-determined; then the first terminal device determines the second transmission resource within the activation time period corresponding to the wake-up signal.
  • the first terminal device determines the second transmission resource after sending the wake-up signal, which can ensure the validity of the second transmission resource. This can not only solve the problem of LBT failure on the unlicensed spectrum, but also enable the WUS+DRX mechanism to work on the SL-U system, saving the energy consumption of the second terminal device.
  • the method 200 may further include:
  • the first terminal device determines the second transmission resource.
  • the first terminal device determines the second transmission resource before performing LBT on at least one first transmission resource. For example, the first terminal device determines the second transmission resource within an activation time period corresponding to a wake-up signal transmitted on the at least one first transmission resource.
  • the first terminal device first determines at least one first transmission resource, and determines a second transmission resource within an activation time period corresponding to the wake-up signal transmitted on the at least one first transmission resource, and then performs LBT on the at least one first transmission resource; then, the first terminal device sends the wake-up signal to the second terminal device on the first transmission resource on which LBT succeeds among the at least one first transmission resource.
  • the method 200 may further include:
  • the first terminal device abandons or re-determines the second transmission resource.
  • the first terminal device first determines at least one first transmission resource, and determines a second transmission resource within an activation time period corresponding to a wake-up signal transmitted on the at least one first transmission resource, and then performs LBT on the at least one first transmission resource; if the LBT performed on the at least one first transmission resource fails, the first terminal device abandons or re-determines the second transmission resource.
  • the first terminal device may re-determine the at least one first transmission resource, and re-determine the second transmission resource within an activation time period corresponding to a wake-up signal transmitted on the re-determined at least one first transmission resource; then, the first terminal device performs LBT on the re-determined at least one first transmission resource, until the first terminal device successfully performs LBT on part or all of the re-determined at least one first transmission resource, and the first terminal device sends a wake-up signal to the second terminal device on the first transmission resource on which LBT succeeds in the re-determined at least one first transmission resource.
  • the first terminal device when the first terminal device first determines the second transmission resource and then performs LBT on the first transmission resource, if the wake-up signal is not successfully sent due to LBT failure, the first terminal device abandons or re-determines the second transmission resource, which not only solves the problem of LBT failure on the unlicensed spectrum, but also enables the WUS+DRX mechanism to work on the SL-U system, saving energy consumption of the second terminal device.
  • the first terminal device determines the second transmission resource based on scheduling information or configuration information sent by the network device.
  • the first terminal device after the first terminal device successfully performs LBT on part or all of at least one first transmission resource and/or sends a wake-up signal to the second terminal device, the first terminal device receives the scheduling information or configuration information sent by the network device, and based on the scheduling information or configuration information sent by the network device, determines the second transmission resource within the activation time period corresponding to the wake-up signal.
  • the first terminal device before performing LBT on at least one first transmission resource, receives scheduling information or configuration information sent by the network device, and determines the second transmission resource within the activation time period corresponding to the wake-up signal transmitted on the at least one first transmission resource based on the scheduling information or configuration information sent by the network device.
  • the scheduling information may be downlink control information (DCI) or other information.
  • DCI downlink control information
  • the configuration information may be a Media Access Control (MAC) control element (CE) or other information.
  • MAC Media Access Control
  • CE control element
  • the second transmission resource scheduled by the scheduling information for the first terminal device is a side-transmission unauthorized resource.
  • the second transmission resource configured by the scheduling information for the first terminal device is a side-transmission unauthorized resource.
  • the scheduling information or the configuration information may include at least one of the following:
  • the scheduling information or the configuration information may include the time domain range of the second transmission resource and/or the frequency domain range of the second transmission resource.
  • the first terminal device determines the time domain position of the second transmission resource within the time domain range. For example, the first terminal device randomly determines the time domain position of the second transmission resource within the time domain range. For another example, the first terminal device determines the time domain position of the second transmission resource within the time domain range based on the identification or other information of the first terminal device.
  • the scheduling information or the configuration information includes the frequency domain range of the second transmission resource
  • the first terminal device determines the frequency domain position of the second transmission resource within the frequency domain range. For example, the first terminal device randomly determines the frequency domain position of the second transmission resource within the frequency domain range. For another example, the first terminal device determines the frequency domain position of the second transmission resource within the frequency domain range based on the identification or other information of the first terminal device.
  • the method 200 may further include:
  • the first terminal device sends first information to the network device
  • the first information is used to request the network device to schedule or configure the second transmission resource for the first terminal device.
  • the first information is specifically used to indicate that the first terminal device has sent the wake-up signal to the second terminal device.
  • the network device responds to the first information and sends information for scheduling or configuring the second transmission resource to the first terminal device.
  • the first terminal device can request the network device to schedule or configure the second transmission resource for the first terminal device by sending the first information to the network device indicating that the first terminal device has sent the wake-up signal to the second terminal device.
  • the network device can send a message to the first terminal device for scheduling or The information for configuring the second transmission resource, and the first information can request the network device to schedule or configure the second transmission resource for the first terminal device by indicating that the first terminal device has sent the wake-up signal to the second terminal device. Therefore, in this embodiment, "the first information is used to request the network device to schedule or configure the second transmission resource for the first terminal device" can be understood as or equivalently replaced by "the first information is used to indicate that the first terminal device has sent the wake-up signal to the second terminal device and/or is used to request the network device to schedule or configure the second transmission resource for the first terminal device", and this application does not make specific limitations on this.
  • the first terminal device may send the first information to the network device after successfully performing LBT on part or all of the at least one first transmission resource and/or sending a wake-up signal to the second terminal device, and determine the second transmission resource based on the scheduling information or configuration information sent by the network device in response to the first information.
  • the first terminal device determines the second transmission resource before performing LBT on at least one first transmission resource
  • the first terminal device sends the first information to the network device before performing LBT on at least one first transmission resource, and determines the second transmission resource based on the scheduling information or configuration information sent by the network device in response to the first information.
  • the first information is single bit information, or the first information is sequence based information.
  • the first information may also be multiple bits of information, which is not specifically limited in the present application.
  • the value of the single bit when the value of the single bit is a first value, it indicates that the first terminal device has sent the wake-up signal to the second terminal device and/or requested the network device to schedule or configure the second transmission resource.
  • the first value may be 0 or 1.
  • the first value may be predefined, indicated by a network device, or determined by the first terminal device.
  • the first terminal device can obtain the first numerical value from the information stored by the first terminal device.
  • the first terminal device can receive information sent by the network device to indicate the first numerical value before sending the first information to the network device.
  • the first terminal device can determine the first numerical value from a plurality of predefined numerical values.
  • the first terminal device can determine the first numerical value from the plurality of numerical values according to a predefined rule based on an identification or other information of the first terminal device.
  • the first numerical value can also be determined by negotiation between the first terminal device and the network device or depend on terminal implementation, and the present application does not specifically limit this.
  • the first information when the first information includes information based on a certain sequence (for example, recorded as the first sequence), it indicates that the first terminal device has sent the wake-up signal to the second terminal device and/or requested the network device to schedule or configure the second transmission resource.
  • a certain sequence for example, recorded as the first sequence
  • the first sequence may be predefined, indicated by a network device, or determined by the first terminal device.
  • the first terminal device can obtain the first sequence from the information stored by the first terminal device.
  • the first terminal device can receive information sent by the network device to indicate the first sequence before sending the first information to the network device.
  • the first terminal device can determine the first sequence in a plurality of predefined sequences.
  • the first terminal device can determine the first sequence in the plurality of sequences according to a predefined rule based on an identification or other information of the first terminal device.
  • the first sequence can also be determined by negotiation between the first terminal device and the network device or depend on terminal implementation, and the present application does not specifically limit this.
  • the network device when the network device receives the first information, it indicates by default that the first terminal device has sent the wake-up signal to the second terminal device and/or requested the network device to schedule or configure the second transmission resource.
  • the first information is carried in a scheduling request (SR) and/or a buffer status report (BSR).
  • SR scheduling request
  • BSR buffer status report
  • the information in the SR for requesting the network device to schedule or configure transmission resources may include only the first information, or may include information for requesting the network device to schedule or configure other resources except the second transmission resource.
  • the BSR may be a periodic or aperiodic BSR.
  • the first information may also be carried in uplink control information (UCI) or other uplink information, and this application does not make any specific limitations on this.
  • UCI uplink control information
  • the first information is carried by a physical uplink control channel (Physical Uplink Control Channel, PUCCH) and/or a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH).
  • a physical uplink control channel Physical Uplink Control Channel, PUCCH
  • a physical uplink shared channel Physical Uplink Shared Channel, PUSCH
  • the first information may also be carried by a physical random access channel (PRACH) or other physical uplink channels, and this application does not make any specific limitations on this.
  • PRACH physical random access channel
  • the first terminal device uses resource listening to determine the second transmission resource within the activation time period.
  • the first terminal device uses resource listening to receive the wake-up signal corresponding to the wake-up signal.
  • the second transmission resource is determined within an activation time period.
  • the first terminal device before performing LBT on at least one first transmission resource, uses resource listening to determine the second transmission resource within an activation time period corresponding to a wake-up signal transmitted on the at least one first transmission resource.
  • the first terminal device determines the second transmission resource in the following manner:
  • the sideline control information intercepted within the resource listening window may be the first sideline control information mentioned above.
  • the physical layer of the first terminal device first determines a resource selection window and a resource listening window; then initializes a resource set; the resource set includes candidate resources within the resource selection window; then, the physical layer of the first terminal device excludes the candidate resources within the resource set based on the side control information and/or non-listening time unit detected within the resource listening window, and obtains a resource set that has undergone resource exclusion; if there are candidate resources within the activation time period in the resource set that has undergone resource exclusion, the physical layer of the first terminal device reports the resource set that has undergone resource exclusion to the upper layer of the first terminal device; the upper layer of the first terminal device determines the second transmission resource from the candidate resources within the activation time period in the resource set that has undergone resource exclusion.
  • the upper layer of the first terminal device may include a protocol layer above the physical layer.
  • the upper layer of the first terminal device may be a media access control (MAC) layer or other protocol layer.
  • MAC media access control
  • the method 200 may further include:
  • the first terminal device selects at least one candidate resource within the activation time period and adds it to the resource set that has been excluded, and then determines the second transmission resource from the candidate resources within the activation time period in the resource set that has been excluded.
  • the physical layer of the first terminal device selects at least one candidate resource within the activation time period and adds it to the resource set that has been excluded by resources, and then reports the resource set after resource exclusion (i.e., the resource set including the at least one candidate resource) to the upper layer of the first terminal device, so that the upper layer of the first terminal device determines the second transmission resource from the candidate resources within the activation time period (i.e., the at least one candidate resource) in the resource set that has been excluded by resources.
  • resource exclusion i.e., the resource set including the at least one candidate resource
  • the physical layer of the first terminal device selects at least one candidate resource within the activation time period and adds it to the resource set that has been excluded by resources, and the obtained resource set is recorded as the resource set that has been added by resources
  • the physical layer of the first terminal device reports the resource set that has been added by resources to the upper layer of the first terminal device, so that the upper layer of the first terminal device determines the second transmission resource from the candidate resources within the activation time period in the resource set that has been added by resources.
  • the number of the at least one candidate resource may be predefined, indicated by the network device, or determined by the first terminal device.
  • the first terminal device can obtain the number of the at least one candidate resource from the information stored by the first terminal device.
  • the first terminal device can receive information sent by the network device to indicate the number of the at least one candidate resource after sending a wake-up signal to the second terminal device or before performing LBT on at least one first transmission resource used to send the wake-up signal.
  • the first terminal device can determine the number of the at least one candidate resource in a predefined plurality of candidate resources.
  • the first terminal device can determine the number of the at least one candidate resource in the plurality of candidate resources according to a predefined rule based on the identification or other information of the first terminal device.
  • the number of the at least one candidate resource can also be determined by negotiation between the first terminal device and the network device or depends on the terminal implementation, and this application does not specifically limit this.
  • the number of the at least one candidate resource may be 1 or a value greater than 1.
  • the first terminal device selects Y candidate resources within the activation time period and adds them to the resource set that has been excluded from the resource, and then determines the second transmission resource from the candidate resources in the resource set that have been excluded from the resource and are within the activation time period (i.e., the Y candidate resources).
  • Y may be predefined, indicated by a network device, or determined by the first terminal device.
  • the first terminal device determines a resource randomly selected within the activation time period as the second transmission resource.
  • the first terminal device determines a randomly selected resource within the activation time period corresponding to the wake-up signal as the second transmission resource.
  • the first terminal device determines a resource randomly selected within an activation time period corresponding to a wake-up signal transmitted on the at least one first transmission resource as the second transmission resource.
  • the upper layer of the first terminal device determines the resource randomly selected in the activation time period as the second transmission resource.
  • the upper layer of the first terminal device may include a protocol layer above the physical layer.
  • the first terminal device may also determine the second transmission resource within the activation time period based on auxiliary information.
  • the auxiliary information includes but is not limited to: the identifier of the first terminal device, the identifier of the device group to which the first terminal device belongs, the number of resource units within the activation time period, and other information.
  • the first terminal device determines the second transmission resource before performing LBT on at least one first transmission resource, it may be necessary to redetermine the second transmission resource.
  • the method of initially determining the second transmission resource and the method of redetermining the second transmission resource may be the same or different. For example, if the LBT performed on the at least one first transmission resource fails, the first terminal device may redetermine the second transmission resource based on the scheduling information or configuration information resent by the network device. For another example, if the LBT performed on the at least one first transmission resource fails, the first terminal device triggers resource reselection and redetermines the second transmission resource, such as reselection based on resource listening or reselection based on random selection. To avoid repetition, it will not be described here.
  • the activation time period includes a plurality of time periods that are continuous or discontinuous in the time domain.
  • the activation time period may be continuous or discontinuous in the time domain.
  • each of the multiple time periods may include at least one continuous time unit, which includes but is not limited to: a frame, a subframe, a time slot, a symbol, and the like.
  • the activation time period includes an activation period of one or more discontinuous reception (DRX) cycles.
  • DRX discontinuous reception
  • the activation time period may be determined according to the DRX configuration of the first terminal device and/or the opposite end of the first terminal device (including the second terminal device).
  • the network device may indicate the length of the activation period (On Duration) time period through the drx-onDurationTimer parameter, and may indicate the starting position of the DRX cycle (DRX Cycle) through drx-CycleStartOffset and drx-SlotOffset.
  • the first terminal device and/or the opposite end of the first terminal device starts a timer with a length of the value indicated by the drx-onDurationTimer parameter at the starting position of the DRX Cycle according to the above parameters, and remains activated before the timer is reduced to 0.
  • the activation time period includes an activation period of one or more DRX cycles after the wake-up signal.
  • the activation time period includes an activation period of one or more DRX cycles separated by a first duration after the wake-up signal.
  • the first duration may be predefined, indicated by a network device, or determined by the first terminal device.
  • the DRX cycle may be a DRX cycle of the second terminal device.
  • the activation time period includes an activation period of a most recent discontinuous reception (DRX) cycle corresponding to the wake-up signal.
  • DRX discontinuous reception
  • the most recent DRX cycle corresponding to the wake-up signal may be an activation period of the first DRX cycle after the wake-up signal.
  • the first transmission resource is scheduled or configured by a network device.
  • the at least one first transmission resource is scheduled or configured by a network device.
  • the first transmission resource may be a resource scheduled by the network device through downlink control information (Downlink Control Information, DCI) or other information.
  • the first transmission resource may be a resource configured by the network device through a media access control (Media Access Control, MAC) control element (Control Element, CE) or other information.
  • DCI Downlink Control Information
  • MAC media access control
  • CE Control Element
  • the first transmission resource is a side-transmission unauthorized resource scheduled or configured by the network device.
  • the first transmission resource is determined by information configured or scheduled by a network device, and the information configured or scheduled by the network device may include at least one of the following:
  • the first transmission resource is determined by information configured or scheduled by a network device, and the information configured or scheduled by the network device may include a time domain range of the first transmission resource and/or a frequency domain range of the first transmission resource.
  • the first terminal device determines the time domain position of the first transmission resource within the time domain range. For example, the first terminal device randomly determines the time domain position of the first transmission resource within the time domain range. For another example, the first terminal device determines the time domain position of the first transmission resource within the time domain range based on an identifier of the first terminal device or other information.
  • the first terminal device determines the frequency domain position of the first transmission resource within the frequency domain range. For example, the first terminal device randomly determines the frequency domain position of the first transmission resource within the frequency domain range. For another example, the first terminal device determines the time domain position of the first transmission resource within the time domain range based on an identifier of the first terminal device or other information. The frequency domain position of the first transmission resource is determined within the frequency domain range.
  • the first transmission resource is a resource determined by the first terminal device.
  • the at least one first transmission resource is a resource randomly determined by the first terminal device.
  • the at least one first transmission resource is a resource determined by the first terminal device by means of resource listening.
  • the physical layer of the first terminal device first determines a resource selection window and a resource listening window; then initializes a resource set; the resource set includes candidate resources within the resource selection window; then, the physical layer of the first terminal device excludes candidate resources within the resource set based on the side control information (such as the first control information mentioned above) and/or the non-listening time unit detected within the resource listening window, obtains a resource set that has undergone resource exclusion, and reports the resource set that has undergone resource exclusion to the upper layer of the first terminal device; the upper layer of the first terminal device determines the first transmission resource in the resource set that has undergone resource exclusion. For example, the upper layer of the first terminal device randomly determines the first transmission resource in the resource set that has undergone resource exclusion.
  • the upper layer of the first terminal device may include a protocol layer above the physical layer.
  • the upper layer of the first terminal device may be a media access control (MAC) layer or other protocol layer.
  • MAC media access control
  • the first transmission resource includes at least one of the following: a physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH), a physical sidelink control channel (Physical Sidelink Control Channel, PSCCH) resources, and a physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH) resources.
  • a physical sidelink feedback channel Physical Sidelink Feedback Channel, PSFCH
  • a physical sidelink control channel Physical Sidelink Control Channel, PSCCH
  • PSSCH Physical Sidelink shared channel
  • the first transmission resource may also be a physical random access channel (PRACH), a physical sidelink triggering channel (PSTCH) or other physical sidelink channels, and the present application does not make any specific limitation on this.
  • PRACH physical random access channel
  • PSTCH physical sidelink triggering channel
  • the wake-up signal is a sequence-based signal.
  • the wake-up signal is side control information.
  • the wake-up signal may be the first sideline control information mentioned above, or the second sideline control information mentioned above.
  • the wake-up signal is MAC CE.
  • the wake-up signal is PC5 Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • PC5 is a communication interface between terminals.
  • the wake-up signal may also be other types of signals or information, which is not specifically limited in the present application.
  • the wake-up signal is carried by at least one of the following: PSFCH, PSCCH, PSSCH.
  • the wake-up signal may also be carried by PRACH, PSTCH or other physical side channels, and this application does not specifically limit this.
  • the first physical sidelink channel includes PSCCH and/or PSSCH.
  • the first physical side channel may also be PSFCH, PRACH, PSTCH or other physical side channels, and the present application does not make any specific limitation on this.
  • FIG. 11 is another example of a wireless communication method provided in an embodiment of the present application.
  • the first transmission resource of the first terminal device is scheduled or configured by the network device, or determined by the first terminal device.
  • the first transmission resource is a PSFCH resource, a PSCCH resource or a PSSCH resource.
  • the first transmission resource is used for the first terminal device to transmit a wake-up signal.
  • the wake-up signal is a sequence-based signal, side control information (such as the first side control information or the second side control information mentioned above), Mac CE or PC5-RRC signaling.
  • the first terminal device performs LBT before the first transmission resource, and the LBT type is Type 1 or 2A or 2B or 2C. If the LBT is successful, the first terminal device transmits a wake-up signal on the first transmission resource where the LBT is successful.
  • the wake-up signal corresponds to an activation time period, for example, the activation time period is the activation period (On duration) of the most recent DRX cycle of the wake-up signal.
  • the DRX cycle and activation period can be determined according to the DRX configuration of the first terminal device and/or the receiving terminal of the first terminal device (such as the second terminal device).
  • the receiving end After the first terminal device successfully sends a wake-up signal on the first transmission resource, if the receiving terminal successfully receives the wake-up signal, the receiving end will detect the first physical side channel (such as PSCCH and/or PSSCH) within the activation time period corresponding to the wake-up signal (such as the activation period of the wake-up signal in the most recent DRX cycle), otherwise the receiving end will not detect the first physical side channel within the activation period.
  • the first physical side channel such as PSCCH and/or PSSCH
  • the first terminal device may determine the second transmission resource in any of the following ways:
  • the second transmission resource is determined. For example, after the first terminal device successfully transmits the wake-up signal on the first transmission resource, the second transmission resource is determined within the activation time period corresponding to the wake-up signal.
  • the second transmission resource is used to transmit the first physical side channel (e.g., PSCCH and/or PSSCH).
  • the second transmission resource is used for the initial transmission of a TB.
  • the first terminal device when the first terminal device determines the second transmission resource after sending the wake-up signal, it can ensure the validity of the second transmission resource, thereby not only solving the problem of LBT failure on the unlicensed spectrum, but also enabling the WUS+DRX mechanism to work on the SL-U system, saving energy consumption of the second terminal device.
  • the first terminal device determines the second transmission resource before performing LBT on the first transmission resource. For example, the first terminal device determines the second transmission resource within an activation time period corresponding to a wake-up signal transmitted on the first transmission resource.
  • the second transmission resource is used to transmit a first physical side channel (e.g., PSCCH and/or PSSCH).
  • the second transmission resource is used for the initial transmission of a TB.
  • the wake-up signal can be sent normally on the first transmission resource, that is, the second transmission resource can be used to transmit the first physical side channel. If the LBT performed by the first terminal device before the first transmission resource fails, the first terminal device abandons the second transmission resource, or the first terminal device can re-determine the second transmission resource. For example, the first terminal device can send information to the network device to request the network device to reconfigure or reschedule the second transmission resource for the first terminal device. For another example, the first terminal device can trigger resource reselection and reselect the second transmission resource by resource listening or random selection.
  • the first terminal device when the first terminal device first determines the second transmission resource and then performs LBT on the first transmission resource, if the wake-up signal is not successfully sent due to LBT failure, the first terminal device abandons or re-determines the second transmission resource, which not only solves the problem of LBT failure on the unlicensed spectrum, but also enables the WUS+DRX mechanism to work on the SL-U system, saving energy consumption of the second terminal device.
  • the first terminal device may determine the second transmission resource in any of the following ways:
  • the first terminal device determines the second transmission resource based on the scheduling information or configuration information sent by the network device.
  • the first terminal device sends first information (for example, 1-bit information) to the network device, and the network device schedules or configures the second transmission resource for the terminal after receiving the first information.
  • first information for example, 1-bit information
  • the network device schedules or configures the second transmission resource for the terminal after receiving the first information.
  • the first information may be sent to the network device after sending the wake-up signal; if the first terminal device determines the second transmission resource before performing LBT on the first transmission resource, the first information may be sent before performing LBT on the first transmission resource.
  • the second transmission resource scheduled or configured by the network device for the first terminal device is within the activation time period corresponding to the wake-up signal sent by the first terminal device, for example, the activation time period is the activation period of the most recent DRX cycle of the wake-up signal.
  • the first terminal device determines the second transmission resource within the activation time period by means of resource listening.
  • the first terminal device uses resource listening to determine the second transmission resource within the activation time period corresponding to the wake-up signal.
  • the first terminal device uses resource listening to determine the second transmission resource within the activation time period corresponding to the wake-up signal transmitted on the first transmission resource.
  • the first terminal device determines a resource selection window of n+T1 to n+T2, and a resource listening window of n-T0 to nT proc,0 , where n is a time slot for the first terminal device to trigger resource selection or reselection or a higher layer to trigger the physical layer to report a candidate resource set, and T0, T1, T2, T proc,0 refer to the description related to FIG7 .
  • the first terminal device initializes a resource set A, and the resource set A includes candidate resources within the resource selection window.
  • the first terminal device excludes resources according to the sideline control information (such as the first sideline control information mentioned above) and/or the unlistened time slots detected within the resource listening window, and selects a candidate resource located within the activation time period (such as the activation period of the most recent DRX cycle of the wake-up signal) corresponding to the wake-up signal (such as the wake-up signal that the first terminal device has sent or plans to send on the first transmission resource) in the resource excluded resource set A as the second transmission resource.
  • the sideline control information such as the first sideline control information mentioned above
  • the unlistened time slots detected within the resource listening window selects a candidate resource located within the activation time period (such as the activation period of the most recent DRX cycle of the wake-up signal) corresponding to the wake-up signal (such as the wake-up signal that the first terminal device has sent or plans to send on the first transmission resource) in the resource excluded resource set A as the second transmission resource.
  • the first terminal device will select at least one candidate resource within the activation time period and include it in the resource set A, and then select a candidate resource within the activation time period in the resource set A as the second transmission resource.
  • the first terminal device determines the resource randomly selected within the activation time period as the second transmission resource.
  • the first terminal device determines a resource randomly selected within the activation time period corresponding to the wake-up signal as the second transmission resource.
  • the first terminal device determines a resource randomly selected within the activation time period corresponding to the wake-up signal transmitted on the first transmission resource as the second transmission resource.
  • the size of the serial numbers of the processes involved above does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
  • FIG. 12 is a schematic block diagram of a first terminal device 300 according to an embodiment of the present application.
  • the first terminal device 300 may include:
  • a listening unit 310 configured to perform listen-before-talk (LBT) on at least one first transmission resource
  • a sending unit 320 is configured to send a wake-up signal to a second terminal device on a first transmission resource on which LBT succeeds among the at least one first transmission resource;
  • the activation time period corresponding to the wake-up signal includes a second transmission resource, and the second transmission resource is used to transmit the first physical side channel.
  • the sending unit 320 after the sending unit 320 sends the wake-up signal to the second terminal device, the sending unit 320 is further configured to:
  • the sending unit 320 before the listening unit 310 performs the listen-before-talk LBT on at least one first transmission resource, the sending unit 320 is further configured to:
  • the sending unit 320 is further configured to:
  • the second transmission resource is abandoned or re-determined.
  • the sending unit 320 is specifically configured to:
  • the second transmission resource is determined based on scheduling information or configuration information sent by the network device.
  • the sending unit 320 is specifically configured to:
  • the first information is used to request the network device to schedule or configure the second transmission resource for the first terminal device.
  • the first information is single bit information, or the first information is sequence based information.
  • the first information is carried in a scheduling request SR and/or a buffer status report BSR, and/or the first information is carried by a physical uplink control channel PUCCH and/or a physical uplink shared channel PUSCH.
  • the sending unit 320 is specifically configured to:
  • the second transmission resource is determined within the activation time period by means of resource monitoring.
  • the sending unit 320 is specifically configured to:
  • the resource set includes candidate resources within the resource selection window
  • candidate resources in the resource set are excluded to obtain a resource set after resource exclusion;
  • the second transmission resource is determined from the candidate resources within the activation time period in the resource set that has been excluded from resources.
  • the sending unit 320 is further configured to:
  • At least one candidate resource within the activation time period is selected and added to the resource set that has been excluded, and then the second transmission resource is determined among the candidate resources within the activation time period in the resource set that has been excluded.
  • the sending unit 320 is specifically configured to:
  • a resource randomly selected within the activation time period is determined as the second transmission resource.
  • the activation time period includes a plurality of time periods that are continuous or discontinuous in the time domain.
  • the activation time period includes one or more activation periods of a discontinuous reception (DRX) cycle.
  • DRX discontinuous reception
  • the activation time period includes an activation period of a most recent discontinuous reception (DRX) cycle corresponding to the wake-up signal.
  • DRX discontinuous reception
  • the first transmission resource is scheduled or configured by a network device, or the first transmission resource is a resource determined by the first terminal device.
  • the first transmission resource includes at least one of the following: a physical sidelink feedback channel PSFCH resource, a physical sidelink control channel PSCCH resource, and a physical sidelink shared channel PSSCH resource.
  • the wake-up signal is a sequence-based signal, or the wake-up signal is side control information, or the wake-up signal is a media access control element MAC CE, or PC5 radio resource control RRC signaling.
  • the wake-up signal is carried by at least one of the following: a physical sidelink feedback channel PSFCH, a physical sidelink control channel PSCCH, and a physical sidelink shared channel PSSCH.
  • the first physical sidelink channel includes a physical sidelink control channel PSCCH and/or a physical sidelink shared channel PSSCH.
  • the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment.
  • the first terminal device 300 shown in FIG. 12 may correspond to the corresponding subject in the method 200 for executing the embodiment of the present application, and the aforementioned and other operations and/or functions of each unit in the first terminal device 300 are respectively for implementing the corresponding processes in each method provided in the embodiment of the present application, and for the sake of brevity, they will not be repeated here.
  • FIG. 13 is a schematic block diagram of a second terminal device 400 according to an embodiment of the present application.
  • the second terminal device 400 may include:
  • the receiving unit 410 is configured to receive a wake-up signal sent by the first terminal device
  • the activation time period corresponding to the wake-up signal includes a second transmission resource, and the second transmission resource is used to transmit the first physical side channel.
  • the receiving unit 410 is specifically configured to:
  • the wake-up signal sent by the first terminal device is detected.
  • the activation time period includes a plurality of time periods that are continuous or discontinuous in the time domain.
  • the activation time period includes one or more activation periods of a discontinuous reception (DRX) cycle.
  • DRX discontinuous reception
  • the activation time period includes an activation period of a most recent discontinuous reception (DRX) cycle corresponding to the wake-up signal.
  • DRX discontinuous reception
  • the wake-up signal is a sequence-based signal, or the wake-up signal is side control information, or the wake-up signal is a media access control element MAC CE, or PC5 radio resource control RRC signaling.
  • the wake-up signal is carried by at least one of the following: a physical sidelink feedback channel PSFCH, a physical sidelink control channel PSCCH, and a physical sidelink shared channel PSSCH.
  • the first physical sidelink channel includes a physical sidelink control channel PSCCH and/or a physical sidelink shared channel PSSCH.
  • the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment.
  • the second terminal device 400 shown in FIG. 13 may correspond to the corresponding subject in the method 200 for executing the embodiment of the present application, and the aforementioned and other operations and/or functions of each unit in the second terminal device 400 are respectively for implementing the corresponding processes in each method provided in the embodiment of the present application, and for the sake of brevity, they are not repeated here.
  • the communication device of the embodiment of the present application is described above from the perspective of the functional module in conjunction with the accompanying drawings.
  • the functional module can be implemented in hardware form, can be implemented by instructions in software form, and can also be implemented by a combination of hardware and software modules.
  • the steps of the method embodiment in the embodiment of the present application can be completed by the hardware integrated logic circuit and/or software form instructions in the processor, and the steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or a combination of hardware and software modules in the decoding processor to perform.
  • the software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, a register, etc.
  • the storage medium is located in a memory, and the processor reads the information in the memory, and completes the steps in the method embodiment involved above in conjunction with its hardware.
  • the listening unit, sending unit or receiving unit mentioned above may be implemented by a transceiver.
  • FIG. 14 is a schematic structural diagram of a communication device 500 according to an embodiment of the present application.
  • the communication device 500 may include a processor 510 .
  • the processor 510 may call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the communication device 500 may further include a memory 520 .
  • the memory 520 may be used to store information, and may also be used to store codes, instructions, etc. executed by the processor 510.
  • the processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.
  • the memory 520 may be a separate device independent of the processor 510, or may be integrated in the processor 510.
  • the communication device 500 may further include a transceiver 530 .
  • the processor 510 may control the transceiver 530 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.
  • the transceiver 530 may include a transmitter and a receiver.
  • the transceiver 530 may further include an antenna, and the number of antennas may be one or more.
  • the various components in the communication device 500 are connected via a bus system, wherein the bus system includes not only a data bus but also a power bus, a control bus and a status signal bus.
  • the communication device 500 may be the first terminal device of the embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the first terminal device in each method of the embodiment of the present application. That is to say, the communication device 500 of the embodiment of the present application may correspond to the first terminal device 300 in the embodiment of the present application, and may correspond to the corresponding subject in the method 200 according to the embodiment of the present application. For the sake of brevity, it will not be repeated here.
  • the communication device 500 may be the second terminal device of the embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the second terminal device in each method of the embodiment of the present application, that is, the communication device 500 of the embodiment of the present application may correspond to the second terminal device 400 in the embodiment of the present application, and may correspond to the corresponding subject in the method 200 according to the embodiment of the present application. For the sake of brevity, it will not be repeated here.
  • a chip is also provided in an embodiment of the present application.
  • the chip may be an integrated circuit chip with signal processing capabilities, and can implement or execute the methods, steps, and logic diagrams disclosed in the embodiments of the present application.
  • the chip may also be called a system-level chip, a system chip, a chip system, or a system-on-chip chip, etc.
  • the chip can be applied to various communication devices, so that the communication device equipped with the chip can execute the methods, steps, and logic diagrams disclosed in the embodiments of the present application.
  • FIG. 15 is a schematic structural diagram of a chip 600 according to an embodiment of the present application.
  • the chip 600 includes a processor 610 .
  • the processor 610 may call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 600 may further include a memory 620 .
  • the processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.
  • the memory 620 may be used to store indication information, and may also be used to store codes, instructions, etc. executed by the processor 610.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the chip 600 may further include an input interface 630 .
  • the processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.
  • the chip 600 may further include an output interface 640 .
  • the processor 610 may control the output interface 640 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.
  • the chip 600 can be applied to the first terminal device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the first terminal device in the various methods of the embodiment of the present application, and can also implement the corresponding processes implemented by the second terminal device in the various methods of the embodiment of the present application. For the sake of brevity, it will not be repeated here.
  • bus system includes not only a data bus but also a power bus, a control bus and a status signal bus.
  • the processors mentioned above may include but are not limited to:
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field programmable gate array
  • the processor can be used to implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
  • the steps of the methods disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in a decoding processor.
  • the software module can be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an erasable programmable memory, a register, etc.
  • the storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the method involved above in combination with its hardware.
  • the memory mentioned above includes but is not limited to:
  • Non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM) or flash memory.
  • the volatile memory can be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static RAM
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link DRAM
  • Direct Rambus RAM Direct Rambus RAM
  • a computer-readable storage medium is also provided in an embodiment of the present application for storing a computer program.
  • the computer-readable storage medium stores one or more programs, and the one or more programs include instructions, which, when executed by a portable electronic device including multiple applications, can enable the portable electronic device to perform the wireless communication method provided in the present application.
  • the computer-readable storage medium can be applied to a first terminal device in an embodiment of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first terminal device in each method of the embodiment of the present application, which will not be repeated here for the sake of brevity.
  • the computer-readable storage medium can be applied to a second terminal device in an embodiment of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the second terminal device in each method of the embodiment of the present application, which will not be repeated here for the sake of brevity.
  • a computer program product is also provided in the embodiment of the present application, including a computer program.
  • the computer program product can be applied to the first terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the first terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.
  • the computer program product can be applied to the second terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the second terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.
  • a computer program is also provided in the embodiment of the present application.
  • the computer can execute the wireless communication method provided in the present application.
  • the computer program can be applied to the first terminal device in the embodiment of the present application.
  • the computer program executes the corresponding process implemented by the first terminal device in each method of the embodiment of the present application.
  • the computer program can be applied to the second terminal device in the embodiment of the present application.
  • the computer program executes the corresponding process implemented by the second terminal device in each method of the embodiment of the present application. For the sake of brevity, it is not repeated here.
  • the present application also provides a communication system, which may include the second terminal device and the first terminal device mentioned above to form a communication system 100 as shown in FIG1 .
  • a communication system which may include the second terminal device and the first terminal device mentioned above to form a communication system 100 as shown in FIG1 .
  • system in this article may also be referred to as “network management architecture” or “network system”.
  • the technical solution of the embodiment of the present application is essentially or part of the prior art that contributes to the part or part of the technical solution that can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a terminal device, etc.) to perform all or part of the steps of the method described in the embodiment of the present application.
  • the aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory, a random access memory, a disk, or an optical disk.
  • the unit/module/component described as a separation/display component may or may not be physically separated, that is, it may be located in one place, or it may be distributed on multiple network units. Some or all of the units/modules/components may be selected according to actual needs to achieve the purpose of the embodiment of the present application.
  • the coupling or direct coupling or communication connection between each other shown or discussed above may be through some interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.

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Abstract

本申请提供了一种无线通信方法、第一终端设备以及第二终端设备，该方法包括：对至少一个第一传输资源进行LBT；然后在这至少一个第一传输资源中LBT成功的第一传输资源上，向第二终端设备发送唤醒信号；其中，该唤醒信号对应的激活时间段包括第二传输资源，该第二传输资源用于传输第一物理侧行信道。本实施例中，在引入唤醒信号的基础上，将用于传输该第一物理侧行信道的第二传输资源与该唤醒信号对应的激活时间段进行关联，使得该唤醒信号能够结合至侧行链路免授权系统，进而不仅能够降低第二终端设备的能耗，还能够保证该第一物理侧行信道的传输可靠性。

Description

无线通信方法、第一终端设备以及第二终端设备 技术领域
本申请实施例涉及通信领域，具体涉及无线通信方法、第一终端设备以及第二终端设备。
背景技术
第三代合作伙伴计划(The 3rd Generation Partnership Project，3GPP)标准协议在长期演进(Long Term Evolution，LTE)系统中引入了非连续接收机制(Discontinuous Reception，DRX)节能策略。DRX的基本机制是为(User Equipment，UE)配置一个DRX周期(cycle)。DRX周期由激活期(On Duration)和休眠期(Opportunity for DRX)组成：在激活期内，UE监听并接收物理下行控制信道(Physical Downlink Control Channel，PDCCH)；在休眠期内，UE不接收PDCCH以减少功耗。
对于侧行链路(Sidelink，SL)系统，版本17(R17)引入了SL DRX以降低终端的能耗。
但是，如何进一步降低终端的能耗仍然是本领域亟需解决的问题。
发明内容
本申请提供了一种无线通信方法、第一终端设备以及第二终端设备，不仅能够降低终端的能耗，还能够保证侧行传输的可靠性。
第一方面，本申请实施例提供了一种无线通信方法，包括：
对至少一个第一传输资源进行先听后说LBT；
在所述至少一个第一传输资源中LBT成功的第一传输资源上，向第二终端设备发送唤醒信号；
其中，所述唤醒信号对应的激活时间段包括第二传输资源，所述第二传输资源用于传输第一物理侧行信道。
第二方面，本申请实施例提供了一种无线通信方法，包括：
接收第一终端设备发送的唤醒信号；
其中，所述唤醒信号对应的激活时间段包括第二传输资源，所述第二传输资源用于传输第一物理侧行信道。
第三方面，本申请实施例提供了一种第二终端设备，用于执行上文涉及的第一方面或其各实现方式中的方法。具体地，所述第二终端设备包括用于执行上文涉及的第一方面或其各实现方式中的方法的功能模块。
在一种实现方式中，该第二终端设备可包括处理单元，该处理单元用于执行与信息处理相关的功能。例如，该处理单元可以为处理器。
在一种实现方式中，该第二终端设备可包括发送单元和/或接收单元。该发送单元用于执行与发送相关的功能，该接收单元用于执行与接收相关的功能。例如，该发送单元可以为发射机或发射器，该接收单元可以为接收机或接收器。再如，该第二终端设备为通信芯片，该发送单元可以为该通信芯片的输入电路或者接口，该发送单元可以为该通信芯片的输出电路或者接口。
第四方面，本申请实施例提供了一种第一终端设备，用于执行上文涉及的第二方面或其各实现方式中的方法。具体地，所述第一终端设备包括用于执行上文涉及的第二方面或其各实现方式中的方法的功能模块。
在一种实现方式中，该第一终端设备可包括处理单元，该处理单元用于执行与信息处理相关的功能。例如，该处理单元可以为处理器。
在一种实现方式中，该第一终端设备可包括发送单元和/或接收单元。该发送单元用于执行与发送相关的功能，该接收单元用于执行与接收相关的功能。例如，该发送单元可以为发射机或发射器，该接收单元可以为接收机或接收器。再如，该第一终端设备为通信芯片，该接收单元可以为该通信芯片的输入电路或者接口，该发送单元可以为该通信芯片的输出电路或者接口。
第五方面，本申请实施例提供了一种第二终端设备，包括收发器、处理器和存储器。所述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，以使得所述收发器和/或所述处理器执行上文涉及的第一方面或其各实现方式中的方法。
在一种实现方式中，该处理器为一个或多个，该存储器为一个或多个。
在一种实现方式中，该存储器可以与该处理器集成在一起，或者该存储器与处理器分离设置。
在一种实现方式中，该收发器包括发射机(发射器)和接收机(接收器)。
第六方面，本申请实施例提供了一种第一终端设备，包括收发器、处理器和存储器。所述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，以使得所述收发器和 /或所述处理器执行上文涉及的第二方面或其各实现方式中的方法。
在一种实现方式中，该处理器为一个或多个，该存储器为一个或多个。
在一种实现方式中，该存储器可以与该处理器集成在一起，或者该存储器与处理器分离设置。
在一种实现方式中，该收发器包括发射机(发射器)和接收机(接收器)。
第七方面，本申请实施例提供了一种芯片，用于实现上文涉及的第一方面至第二方面中的任一方面或其各实现方式中的方法。具体地，所述芯片包括：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上文涉及的第一方面至第二方面中的任一方面或其各实现方式中的方法。
第八方面，本申请实施例提供了一种计算机可读存储介质，用于存储计算机程序，当所述计算机程序在计算机上运行时，使得计算机执行上文涉及的第一方面至第二方面中的任一方面或其各实现方式中的方法。
第九方面，本申请实施例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文涉及的第一方面至第二方面中的任一方面或其各实现方式中的方法。
第十方面，本申请实施例提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上文涉及的第一方面至第二方面中的任一方面或其各实现方式中的方法。
基于以上技术方案，针对本申请提供的无线通信方法，该方法包括：对至少一个第一传输资源进行LBT；在这至少一个第一传输资源中LBT成功的第一传输资源上，向第二终端设备发送唤醒信号；其中，该唤醒信号对应的激活时间段包括第二传输资源，该第二传输资源用于传输第一物理侧行信道。本实施例中，在引入唤醒信号的基础上，将用于传输该第一物理侧行信道的第二传输资源与该唤醒信号对应的激活时间段进行关联，使得该唤醒信号能够结合至侧行链路免授权系统，进而不仅能够降低第二终端设备的能耗，还能够保证该第一物理侧行信道的传输可靠性。此外，该第一终端设备在至少一个第一传输资源中LBT成功的第一传输资源上向第二终端设备发送唤醒信号，当这至少一个第一传输资源为多个传输资源时，能够保证该唤醒信号的传输可靠性，相应的，能够提升该第一物理侧行信道的传输可靠性。
附图说明
图1是本申请提供的一种通信系统架构的示意性图。
图2是本申请提供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是本申请提供的第二模式下资源选择的示例。
图8是本申请提供的DRX的示例。
图9是本申请提供的节能信号的示例。
图10是本申请提供的无线通信方法的示意流程图。
图11是本申请实施例提供的无线通信方法的另一示例。
图12是本申请实施例提供的第一终端设备的示意性框图。
图13是本申请实施例提供的第二终端设备的示意性框图。
图14是本申请实施例提供的通信设备的示意性框图。
图15是本申请实施例提供的芯片的示意性框图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统。
示例性地，本申请实施例的技术方案可以应用的通信系统包括但不限于：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。
本申请实施例可以适用于任何终端设备到终端设备的通信框架。
示例性地，本申请实施例可以适用于设备到设备(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)，车到车(Vehicle to Vehicle，V2V)通信，或车联网(Vehicle to everything，V2X)等通信框架。
本申请实施例适用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。
本申请的通信系统也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。
本申请结合网络设备和终端设备描述了各个实施例。
示例性地，本申请涉及的终端设备可以是任何配置有物理层和媒体接入控制层的设备或装置。
例如，本申请涉及的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。
再如，本申请涉及的终端设备可以是WLAN中的站点(STATION，ST)，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、个人数字线性处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它线性处理设备、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。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，也可以是通过软件支持所实现的功能。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。
再如，本申请涉及的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。
值得注意的是，本申请涉及的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)。
示例性地，本申请涉及的网络设备可以是用于与终端设备通信的设备。
例如，本申请涉及的网络设备可以为小区提供服务，即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，小小区(Small cell)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。
例如，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。
需要说明的是，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。
例如，本文中的术语“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。术语“至少一项”，仅仅是一种描述列举对象的组合关系，表示可以存在一项或多项，例如，以下中的至少一项：A、B、C，可以表示以下几种组合情况：单独存在A，单独存在B，单独存在C，同时存在A和B，同时 存在A和C，同时存在B和C，同时存在A、B以及C。术语“多个”是指两个或两个以上。字符“/”，一般表示前后关联对象是一种“或”的关系。
再如，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。术语“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。术语“预定义”或“预配置”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”或“预配置”可以是指由协议约定。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、WiFi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。术语“在……时”可以被解释成为“如果”或“若”或“当……时”或“响应于”等类似描述。类似地，取决于语境，短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”等类似描述。术语“第一”、“第二”、“第三”、“第四”、“第A”、“第B”等是用于区别不同对象，而不是用于描述特定顺序。术语“包括”和“具有”以及它们任何变形，意图在于覆盖不(或非)排他的包含。
为便于理解本申请提供的方案，下面对与本申请提供的方案相关的内容进行说明。
(1)、侧行链路(Sidelink，SL)传输技术。
Sidelink传输技术是终端与终端之间进行通信的传输技术，与传统的蜂窝系统中通信数据由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。例如，车联网系统也采用终端到终端直接通信的方式。
(2)、不同网络覆盖环境下的侧行通信。
图1是本申请提供的一种通信系统架构的示意性图。
如图1所示，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是本申请提供的另一种通信系统架构的示意性图。
如图2所示，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。
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，部分网络覆盖侧行通信，及网络覆盖外侧行通信。
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。
如图3所示，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是本申请提供的一种部分网络覆盖侧行通信的示意性图。
如图4所示，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是本申请提供的一种网络覆盖外侧行通信的示意性图。
如图5所示，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。
(3)、SL的物理层结构。
图6是本申请提供的SL的物理层结构的示例。
如图6所示，SL的物理层结构包括物理侧行共享信道(Physical Sidelink Shared Channel，PSSCH)和物理侧行控制信道(Physical Sidelink Control Channel，PSCCH)，其中，PSCCH用于传输(或发送)第一侧行控制信息，PSSCH用于承载数据和第二侧行控制信息，PSCCH和PSSCH在同一时隙中发送。第一侧行控制信息承载在PSCCH中，主要包含资源侦听相关的域，方便其他UE解码后进行资源排除与资源选择。在PSSCH中，除了数据外，还承载第二侧行控制信息，第二侧行控制信息主要包括数据解调相关的域，方便其他UE解调该PSSCH中的数据。
(4)、Sidelink中的资源分配。
对于Sidelink，在3GPP定义了两种资源分配模式：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；基站可以为终端动态调度资源，也可以为终端分配半静态传输的资源。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。在动态调度下，基站向终端发送下行控制信息，该下行控制信息指示一个或多个资源，终端在该指示的资源上进行数据传输。在半静态调度下，基站为终端配置免授权的侧行传输资源，也称为Sidelink Configured Grant(SL CG)，一般情况下为周期性的免授权资源。当终端有数据传输时，可以直接使用该免授权的侧行传输资源。SL CG分为类型1(type-1)侧行免授权和类型2(type-2)侧行免授权。
Type-1 SL CG：网络通过RRC信令为UE配置侧行免授权传输资源和传输参数。
Type-2 SL CG：网络通过RRC信令为UE配置部分传输参数，通过DCI信令激活该侧行免授权，并且该DCI用于配置侧行传输资源，如果网络希望UE上报侧行反馈信息，该DCI还用于配置PUCCH传输资源。
第二模式：终端在资源池中选取一个或多个资源进行数据的传输。例如，针对如图3所示的网络覆盖范围内的侧行通信，终端可以在网络配置的资源池中自主选取传输资源进行侧行传输。再如，针对如图5所示的网络覆盖范围外的侧行通信，终端可以在预配置的资源池中自主选取传输资源进行侧行传输。
具体地，在第二模式下，终端在PSSCH中进行数据传输的同时会在PSCCH中利用第一侧行控制信息指示预留传输资源。对于进行资源选择的终端，该终端确定资源选择窗和资源侦听窗，根据资源侦听窗内侦听到的其他终端发送的第一侧行控制信息指示的资源和/或根据资源侦听窗内的未侦听时隙对资源选择窗内的候选资源进行排除，从资源排除后的剩余候选资源中选择传输资源。
图7是本申请提供的第二模式下资源选择的示例。
如图7所示，终端在时隙n触发资源选择或重选或时隙n是高层触发物理层上报候选资源集合的时隙，资源选择窗从n+T1开始，到n+T2结束。0<＝T1<＝Tproc,1，当子载波间隔是15，30，60，120kHz时，Tproc,1为3，5，9，17个时隙。T2min<＝T2<＝业务的剩余时延预算，T2min的取值集合为{1,5,10,20}*2μ个时隙，其中μ＝0,1,2,3对应于子载波间隔是15，30，60，120kHz的情况，终端根据自身待发送数据的优先级从该取值集合中确定T2min。例如当子载波间隔是15kHz时，终端根据自身待发送数据的优先级从集合{1,5,10,20}中确定T2min。当T2min大于等于业务的剩余时延预算时，T2等于业务的剩余时延预算。剩余时延预算即数据的时延要求的对应时刻与当前时刻的差值。例如时隙n到达的数据包，时延要求为50毫秒，假设一个时隙为1毫秒，如果当前时刻为时隙n，则剩余时延预算为50毫秒，若当前时刻为时隙n+20，则剩余时延预算为30毫秒。
终端在n-T0到n-Tproc,0进行资源侦听(不包括n-Tproc,0)，T0的取值为100或1100毫秒。当子载波间隔是15，30，60，120kHz时，Tproc,0为1，1，2，4个时隙。可选的，终端在侦听窗内属于其所用资源池的时隙中进行资源侦听。可选的，终端在每个时隙(除了自己的发送时隙)都会侦听其他终端发送的第一侧行控制信息，当时隙n触发资源选择或重选后，终端可以使用n-T0到n-Tproc,0资源侦听的结果。
资源侦听过程可包括以下步骤：
步骤1：
终端将资源选择窗内的候选资源作为资源集合A，集合A中的任意一个候选资源记为R(x,y)，x和y分别用于指示资源的频域位置和时域位置。例如，x指示资源R(x,y)频域起始的子信道，y指示资源R(x,y)所在的时隙，R(x,y)表示时隙ty内，从子信道x开始的连续L_subchannel个子信道，其中L_subchannel由高层配置给物理层。记集合A中资源的初始数量为Mtotal，记(t1,t2,t3…)为属于资源池的时隙的集合。终端根据资源侦听窗内的未侦听时隙和/或资源侦听窗内的资源侦听结果对资源集合A中的资源进行排除。
对于根据未侦听时隙进行排除，终端判断资源R(x,y)或与资源R(x,y)对应的一系列周期性资源是否与根据未侦听时隙确定的时隙重叠，若重叠则从资源集合A中排除资源R(x,y)。如图7中的(a)所示，时隙tm为未侦听时隙，从时隙tm开始映射的横线阴影和斜线阴影的时隙为根据未侦听时隙确定的时隙，若这些时隙与资源R(x,y)或与资源R(x,y)对应的一系列周期性资源重叠，则终端从资源集合A中排除资源R(x,y)。
对于根据资源侦听结果进行资源排除，终端判断资源R(x,y)或与资源R(x,y)对应的一系列周期性资源是否与根据侦听到的第一侧行控制信息确定的资源重叠且根据侦听到的第一侧行控制信息确定的SL-RSRP大于SL-RSRP阈值，若重叠且满足SL-RSRP条件则从资源集合A中排除资源R(x,y)。如图7中的(b)所示，终端在时隙tm内侦听到其他终端发送的第一侧行控制信息，根据该第一侧行控制信 息确定的资源为资源1-6，如果资源1-6与资源R(x,y)或与资源R(x,y)对应的一系列周期性资源重叠并且根据侦听到的第一侧行控制信息确定的SL-RSRP大于SL-RSRP阈值，则从资源集合A中排除资源R(x,y)。
如果在上述资源排除后，资源集合A中剩余资源不足Mtotal*X，则将SL-RSRP阈值抬升3dB，初始化资源集合A，重新执行步骤1，直至资源排除后，资源集合A中剩余资源数目大于等于Mtotal*X。物理层将资源排除后的资源集合A作为候选资源集合上报给高层。所述X由终端的高层配置给物理层。
步骤2：
高层从上报的候选资源集合中随机选择资源发送数据。即终端从候选资源集合中随机选择资源发送数据。
(5)、非授权频谱。
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。例如，WIFI系统就部署在非授权频谱上。
(6)、先听后说(Listen Before Talk，LBT)。
当NR SL技术工作在非授权(Unlicensed)频谱上，终端需要进行LBT，LBT成功后才可以接入信道进行传输。
LBT的具体分类包括：
Type 1：生成随机计数值，若监听时隙为空闲则减1，若忙碌则不减，减到0为可接入信道进行传输。若计数值减到0，且通信设备无数据进行传输，则当通信设备需要发送数据时，无需从新生成计数值，只需进行一个时长为固定时间长度的LBT,若LBT成功，即该固定长度内信道空闲，则接入信道。
Type 2A：通信设备可以监听25微秒长度(记为Tshort)的信道，如果Tshort内的监听时隙均为空闲，则通信设备可以直接接入信道。
Type 2B：通信设备可以监听16微秒长度的信道(记为Tf)，如果Tf内的监听时隙为空闲，则通信设备可以直接接入信道。
Type 2C：通信设备可以不进行LBT直接接入信道，该类型只能应用于此次传输距离上一次传输之间的间隔小于或等于16微秒的情况。同时此次传输的长度不超过584微秒。
(7)、UU口的DRX机制。
在无线网络中，用户终端(User Equipment，UE)要一直监听物理下行控制信道(Physical Downlink Control Channel,PDCCH)，根据网络侧发送的指示消息对数据进行收发，这样导致UE的功耗和数据传输的时延都比较大。因此3GPP标准协议在LTE系统中开始引入非连续接收机制(Discontinuous Reception，DRX)节能策略。
图8是本申请提供的DRX的示例。
如图8所示，DRX的基本机制是为UE配置一个DRX cycle。DRX cycle由“On Duration”和“Opportunity for DRX”组成：在“On Duration”时间内，UE监听并接收PDCCH(激活期)；在“Opportunity for DRX”时间内，UE不接收PDCCH以减少功耗(休眠期)。
在DRX操作中，终端根据网络配置的一些定时器参数来控制终端处于激活状态或者休眠状态。
例如，可以通过drx-onDurationTimer参数指示“On Duration”时间段的长度，可以通过drx-LongCycleStartOffset和drx-SlotOffset指示DRX Cycle的起始位置。终端根据上述参数，在DRX Cycle的起始位置启动长度为drx-onDurationTimer参数指示的值的定时器，在定时器减为0前，保持激活状态。
当终端在“On Duration”时间段内(即On duration timer减到0之前)，如果终端检测到PDCCH，还会启动Inactivity timer、re-transmission timer等定时器延长激活状态，用于接收调度的数据或者重传。
(8)、NR系统中唤醒信号(Wake up signal，WUS)。
传统的终端节能机制主要为DRX。当配置DRX时，终端在DRX ON Duration监听PDCCH，若ON Duration期间收到数据调度，则终端基于DRX定时器的控制持续监听PDCCH直至数据传输完毕；否则若终端在DRX ON Duration未收到数据调度，则终端进入休眠状态以实现节能。可见，DRX是一种以DRX周期为时间颗粒度的节能控制机制，因此不能实现最优化功耗控制。比如即使终端没有数据调度，终端在周期性启动DRX ON Duration定时器运行期间也要监听PDCCH，因此依然存在功率浪费的情况。
为了实现终端进一步的节能，NR节能增强引入了唤醒信号。标准化的唤醒信号与DRX机制结合使用。其具体的技术原理是，终端在DRX ON duration之前接收唤醒信号的指示。
图9是本申请提供的节能信号的示例。
如图9所示，当终端在一个DRX周期存在数据传输时，例如基站调度下行传输到终端，使用唤醒信号“唤醒”终端，以在DRX ON duration期间监听PDCCH；相反地，当终端在一个DRX周期没有数据传输时，则不使用唤醒“唤醒”终端，终端在DRX ON Duration期间不需要监听PDCCH。相比现有DRX机制，在终端没有数据传输时，终端可省略DRX ON duration期间PDCCH监听，从而实现节能。
(9)、基于物理下行控制信道(Physical Downlink Control Channel，PDCCH)的节能信号。
节能信号可以是基于序列的信号，也可以是基于PDCCH信道的。其中采用PDCCH信道承载节能指示信息具有如下一些优势，因此在NR系统中利用PDCCH作为节能信号，利用PDCCH作为节能信号具有以下优势：
1、可以直接复用现有的PDCCH设计，包括编码、加扰、资源映射、搜索空间，控制资源集(Control Resource Set，CORESET)等方面，因此标准化的工作量较小。
2、与其他信号传输具有良好的兼容于复用特性。由于现有系统已经支持PDCCH信道，因此PDCCH与其他各信道如PDSCH等具有良好的兼容复用特性。
在R17的SL版本中已经引入了SL DRX，但没有引入SL WUS做进一步的节能省电。在R18的SL版本中，正在讨论基础版本的SL-U，即工作在非授权频段的SL系统。但是，在针对SL-U系统设计节能与省电机制时，除了重用已有的SL DRX机制，还有很大可能引入SL WUS。因此，SL WUS在SL-U系统中如何工作是本领域亟需解决的技术问题。例如WUS在SL-U会存在LBT失败无法传输的问题、WUS如何传输以及数据如何传输等问题。有鉴于此，本申请提供了一种无线通信方法、第一终端设备以及第二终端设备，不仅能够降低终端的能耗，还保证能够侧行传输的可靠性。
下面对本申请提供的无线通信方法进行示例性说明。
图10是本申请实施例提供的无线通信方法200的示意性流程图，所述无线通信方法200可以由第一终端设备和第二终端设备交互执行。图2中所示的第一终端设备和/或第二终端设备可以是任意一种能够进行侧行通信的终端设备。例如，图2中所示的第一终端设备和/或第二终端设备可以为图1至图5中所示的终端。
如图2所示，该方法200可包括以下部分或全部内容：
S210，第一终端设备对至少一个第一传输资源进行先听后说(Listen Before Talk，LBT)。
示例性地，所述至少一个第一传输资源可以是一个第一传输资源，也可以是多个第一传输资源。
示例性地，该第一终端设备对所述至少一个第一传输资源进行LBT，其可以理解为或等同替换为：该第一终端设备对所述至少一个第一传输资源中的每一个第一传输资源进行LBT，或该第一终端设备在所述至少一个第一传输资源中的每一个第一传输资源前进行LBT；或该第一终端设备在所述至少一个第一传输资源中的每一个第一传输资源前的资源上进行LBT。
示例性地，示例性地，该第一终端设备工作在非授权(Unlicensed)频谱上时，该第一终端设备对至少一个第一传输资源进行LBT，该LBT的类型可以是以下中的任一项：
Type 1：生成随机计数值，若监听时隙为空闲则减1，若忙碌则不减，减到0为可接入信道进行传输。若计数值减到0，且通信设备无数据进行传输，则当通信设备需要发送数据时，无需从新生成计数值，只需进行一个时长为固定时间长度的LBT,若LBT成功，即该固定长度内信道空闲，则接入信道。
Type 2A：通信设备可以监听25微秒长度(记为Tshort)的信道，如果Tshort内的监听时隙均为空闲，则通信设备可以直接接入信道。
Type 2B：通信设备可以监听16微秒长度的信道(记为Tf)，如果Tf内的监听时隙为空闲，则通信设备可以直接接入信道。
Type 2C：通信设备可以不进行LBT直接接入信道，该类型只能应用于此次传输距离上一次传输之间的间隔小于或等于16微秒的情况。同时此次传输的长度不超过584微秒。
S220，第一终端设备在所述至少一个第一传输资源中LBT成功的第一传输资源上，向第二终端设备发送唤醒信号；其中，所述唤醒信号对应的激活时间段包括第二传输资源，所述第二传输资源用于传输第一物理侧行信道。相应的，该第二终端设备在资源池中检测(例如盲检)该唤醒信号。该资源池可以是网络配置的，也可以是预配置的。
示例性地，若所述至少一个第一传输资源为多个第一传输资源，则该第一终端设备在每个第一传输资源之前分别进行LBT，若LBT成功，则在对应的第一传输资源上发送唤醒信号。例如，该第一终端设备在资源1，资源2，资源3前均进行LBT，当在资源1前LBT成功后，即在资源1上发送唤醒信号，同理在资源2或3前LBT成功，则在资源2或3上发送唤醒信号。
示例性地，该激活时间段指该唤醒信号激活的时间段。
示例性地，所述至少一个第一传输资源为多个第一传输资源时，该第一终端设备在该多个第一传输资源中至少一个LBT成功的第一传输资源上，向第二终端设备发送至少一个唤醒信号。此时，所述至少一个唤醒信号对应的激活时间段包括第二传输资源，该第二传输资源用于传输第一物理侧行信道。其中，所述至少一个唤醒信号中不同的唤醒信道可以对应(例如激活)同一个时间段，也可以对应(例如激活)不同的时间段，本申请对此不作具体限定。
示例性地，该激活时间段指指该第一终端设备的对端(包括该第二终端设备)可以进行物理侧行信道(例如PSCCH和/或PSSCH)的接收的时间段。换言之，若该第一终端设备的对端接收到该唤醒信号，在该激活时间段内检测物理侧行信道，否则在该激活时间段内不检测物理侧行信道。
示例性地，该唤醒信号对应的激活时间段包括一个或多个第二传输资源，该一个或多个第二传输资源用于传输第一物理侧行信道。
示例性地，该第二传输资源用于传输承载在第一物理侧行信道上的传输块(transmission block，TB)。
例如，该第二传输资源用于TB的初传，或者说，该第二传输资源用于TB的第一次传输。
本实施例中，在引入唤醒信号的基础上，将用于传输该第一物理侧行信道的第二传输资源与该唤醒信号对应的激活时间段进行关联，使得该唤醒信号能够结合至侧行链路免授权系统，进而不仅能够降低第二终端设备的能耗，还能够保证该第一物理侧行信道的传输可靠性。此外，该第一终端设备在至少一个第一传输资源中LBT成功的第一传输资源上向第二终端设备发送唤醒信号，当这至少一个第一传输资源为多个传输资源时，能够保证该唤醒信号的传输可靠性，相应的，能够提升该第一物理侧行信道的传输可靠性。
在一些实施例中，所述方法200还可包括：
第一终端设备在所述第二传输资源上，向所述第二终端设备发送所述第一物理侧行信道。相应的，该第二终端设备在资源池中检测(例如盲检)该第一物理侧行信道。该资源池可以是网络配置的，也可以是预配置的。
示例性地，若该第一终端设备存在需要向该第二终端设备发送的数据或信息时，则该第一终端设备在该第二传输资源上向该第二终端设备发送该第一物理侧行信道。该第一物理侧行信道承载有该第一终端设备需要向该第二终端设备发送的数据或信息。
在一些实施例中，所述S220之后，所述方法200还可包括：
第一终端设备确定所述第二传输资源。
示例性地，该第一终端设备对所述至少一个第一传输资源中的部分或全部第一传输资源进行的LBT成功和/或向该第二终端设备发送唤醒信号之后，确定该第二传输资源。例如，该第一终端设备在该唤醒信号对应的激活时间段内确定该第二传输资源。
示例性地，该第一终端设备可以先确定至少一个第一传输资源，然后对这至少一个第一传输资源进行LBT，并在这至少一个第一传输资源中LBT成功的第一传输资源上，向该第二终端设备发送唤醒信号；接着该第一终端设备在该唤醒信号对应的激活时间段内确定该第二传输资源。
当然，若该第一终端设备对所述至少一个第一传输资源进行的LBT均失败，则该第一终端设备可以重新确定所述至少一个第一传输资源，并对重新确定的所述至少一个第一传输资源进行LBT，直至该第一终端设备对重新确定的所述至少一个第一传输资源中的部分或全部第一传输资源进行的LBT成功时，该第一终端设备在重新确定的所述至少一个第一传输资源中LBT成功的第一传输资源上，向该第二终端设备发送唤醒信号；然后该第一终端设备在该唤醒信号对应的激活时间段内确定该第二传输资源。
本实施例中，该第一终端设备在发送唤醒信号后再确定第二传输资源，能够保证该第二传输资源的有效性，进而不仅能够解决非授权频谱上LBT失败的问题，还能够使得WUS+DRX的机制可以工作在SL-U系统上，节省该第二终端设备的能耗。
在一些实施例中，所述S210之前，所述方法200还可包括：
第一终端设备确定所述第二传输资源。
示例性地，该第一终端设备在对至少一个第一传输资源进行LBT之前确定该第二传输资源。例如，该第一终端设备在所述至少一个第一传输资源上传输的唤醒信号对应的激活时间段内确定该第二传输资源。
示例性地，该第一终端设备先确定至少一个第一传输资源，并在所述至少一个第一传输资源上传输的唤醒信号对应的激活时间段内确定第二传输资源，然后对这至少一个第一传输资源进行LBT；接着，该第一终端设备在这至少一个第一传输资源中LBT成功的第一传输资源上，向该第二终端设备发送该唤醒信号。
在一些实施例中，所述方法200还可包括：
若对所述至少一个第一传输资源进行的LBT均失败，则第一终端设备放弃或重新确定所述第二传输资源。
示例性地，该第一终端设备先确定至少一个第一传输资源，并在所述至少一个第一传输资源上传输的唤醒信号对应的激活时间段内确定第二传输资源，然后对这至少一个第一传输资源进行LBT；若对所述至少一个第一传输资源进行的LBT均失败，则该第一终端设备放弃或重新确定该第二传输资源。例如，若该第一终端设备对所述至少一个第一传输资源进行的LBT均失败，则该第一终端设备可以重新确定所述至少一个第一传输资源，并在重新确定的至少一个第一传输资源上传输的唤醒信号对应的激活时间段内，重新确定该第二传输资源；然后，该第一终端设备对重新确定的所述至少一个第一传输资源进行LBT，直至该第一终端设备对重新确定的所述至少一个第一传输资源中的部分或全部第一传输资源进行的LBT成功时，该第一终端设备在重新确定的所述至少一个第一传输资源中LBT成功的第一传输资源上，向该第二终端设备发送唤醒信号。
本实施例中，该第一终端设备先确定该第二传输资源再对第一传输资源进行LBT时，若唤醒信号因为LBT失败没有成功发送，该第一终端设备放弃或重新确定该第二传输资源，不仅能够解决非授权频谱上LBT失败的问题，还能够使得WUS+DRX的机制可以工作在SL-U系统上，节省该第二终端设备的能耗。
在一些实施例中，第一终端设备基于网络设备发送的调度信息或配置信息，确定所述第二传输资源。
示例性地，该第一终端设备对至少一个第一传输资源中的部分或全部第一传输资源进行的LBT成功和/或向该第二终端设备发送唤醒信号之后，该第一终端设备接收网络设备发送的调度信息或配置信息，并基于该网络设备发送的调度信息或配置信息，在该唤醒信号对应的激活时间段内确定该第二传输资源。
示例性地，该第一终端设备在对至少一个第一传输资源进行LBT之前，接收网络设备发送的调度信息或配置信息，并基于网络设备发送的调度信息或配置信息，在所述至少一个第一传输资源上传输的唤醒信号对应的激活时间段内确定该第二传输资源。
示例性地，该调度信息可以是下行控制信息(Downlink Control Information，DCI)或其他信息。
示例性地，该配置信息可以是媒体接入控制(Media Access Control，MAC)控制元素(Control Element，CE)或其他信息。
示例性地，该调度信息为该第一终端设备调度的第二传输资源为侧行的免授权资源。
示例性地，该调度信息为该第一终端设备配置的第二传输资源为侧行的免授权资源。
示例性地，该调度信息或该配置信息可以包括以下中的至少一项：
该第二传输资源在时域上的起始位置信息、该第二传输资源在时域上的结束位置信息、该第二传输资源在时域上的长度、该第二传输资源在时域上的位置信息、该第二传输资源在频域上的起始位置信息、该第二传输资源在频域上的结束位置信息、该第二传输资源在频域上的长度、该第二传输资源在频域上的位置信息。
示例性地，该调度信息或该配置信息可以包括该第二传输资源的时域范围和/或该第二传输资源的频域范围。
例如，该调度信息或该配置信息包括该第二传输资源的时域范围时，该第一终端设备在该时域范围内确定该第二传输资源的时域位置。例如，该第一终端设备在该时域范围内随机确定该第二传输资源的时域位置。再如，该第一终端设备基于该第一终端设备的标识或其他信息在该时域范围内确定该第二传输资源的时域位置。类似的，该调度信息或该配置信息包括该第二传输资源的频域范围时，该第一终端设备在该频域范围内确定该第二传输资源的频域位置。例如，该第一终端设备在该频域范围内随机确定该第二传输资源的频域位置。再如，该第一终端设备基于该第一终端设备的标识或其他信息在该频域范围内确定该第二传输资源的频域位置。
在一些实施例中，所述方法200还可包括：
第一终端设备向所述网络设备发送第一信息；
其中，所述第一信息用于请求所述网络设备为所述第一终端设备调度或配置所述第二传输资源。
示例性地，该第一信息具体用于指示该第一终端设备已向该第二终端设备发送该唤醒信号，这种情况下，网络设备收到该第一信息后响应于该第一信息，向该第一终端设备发送用于调度或配置该第二传输资源的信息。或者说，该第一终端设备可以通过向该网络设备发送用于指示该第一终端设备已向该第二终端设备发送该唤醒信号的第一信息，来请求该网络设备为该第一终端设备调度或配置该第二传输资源。
应理解，由于网络设备收到该第一信息后可以响应于该第一信息向该第一终端设备发送用于调度或 配置该第二传输资源的信息，以及该第一信息可以通过指示该第一终端设备已向该第二终端设备发送该唤醒信号的方式请求该网络设备为该第一终端设备调度或配置该第二传输资源。因此，在本实施例中，“所述第一信息用于请求所述网络设备为所述第一终端设备调度或配置所述第二传输资源”可以理解为或等同替换为“所述第一信息用于指示所述第一终端设备已向所述第二终端设备发送所述唤醒信号和/或用于请求所述网络设备为所述第一终端设备调度或配置所述第二传输资源”，本申请对此不作具体限定。
示例性地，若该第一终端设备对所述至少一个第一传输资源中的部分或全部第一传输资源进行的LBT成功和/或向该第二终端设备发送唤醒信号之后，确定该第二传输资源，则该第一终端设备可以在对所述至少一个第一传输资源中的部分或全部第一传输资源进行的LBT成功和/或向该第二终端设备发送唤醒信号之后，向该网络设备发送该第一信息，并基于网络设备响应于该第一信息发送的调度信息或配置信息，确定该第二传输资源。
示例性地，若该第一终端设备在对至少一个第一传输资源进行LBT之前确定该第二传输资源，则该第一终端设备在对至少一个第一传输资源进行LBT之前向该网络设备发送该第一信息，并基于网络设备响应于该第一信息发送的调度信息或配置信息，确定该第二传输资源。
在一些实施例中，所述第一信息为单个比特的信息，或所述第一信息为基于序列的信息。
当然，在其他可替代实施例中，该第一信息也可以为多个比特的信息，本申请对此不作具体限定。
示例性地，该单个比特的取值为第一数值时指示该第一终端设备已向该第二终端设备发送该唤醒信号和/或请求该网络设备调度或配置该第二传输资源。该第一数值可以为0或1。
示例性地，该第一数值可以是预定义、网络设备指示的、或第一终端设备确定的。
例如，该第一数值为预定义的数值时，该第一终端设备可以从该第一终端设备存储的信息中获取该第一数值。该第一数值为网络设备指示的数值时，该第一终端设备可以在向该网络设备发送该第一信息之前接收网络设备发送的用于指示该第一数值的信息。该第一数值为该第一终端设备确定的信息时，该第一终端设备可以在预定义的多个数值中确定该第一数值，例如，该第一终端设备可以基于该第一终端设备的标识或其他信息，按照预定义的规则在该多个数值中确定该第一数值。当然，在其他可替代实施例中，该第一数值也可以是该第一终端设备和该网络设备通过协商确定或取决于终端实现，本申请对此不作具体限定。
示例性地，该第一信息包括基于某一序列(例如记为第一序列)的信息时，指示该第一终端设备已向该第二终端设备发送该唤醒信号和/或请求该网络设备调度或配置该第二传输资源。
示例性地，该第一序列可以是预定义、网络设备指示的、或第一终端设备确定的。
例如，该第一序列为预定义的序列时，该第一终端设备可以从该第一终端设备存储的信息中获取该第一序列。该第一序列为网络设备指示的序列时，该第一终端设备可以在向该网络设备发送该第一信息之前接收网络设备发送的用于指示该第一序列的信息。该第一序列为该第一终端设备确定的信息时，该第一终端设备可以在预定义的多个序列中确定该第一序列，例如，该第一终端设备可以基于该第一终端设备的标识或其他信息，按照预定义的规则在该多个序列中确定该第一序列。当然，在其他可替代实施例中，该第一序列也可以是该第一终端设备和该网络设备通过协商确定或取决于终端实现，本申请对此不作具体限定。
示例性地，网络设备收到该第一信息时默认指示该第一终端设备已向该第二终端设备发送该唤醒信号和/或请求该网络设备调度或配置该第二传输资源。
在一些实施例中，所述第一信息携带在调度请求(Scheduling Request，SR)和/或缓冲状态报告(Buffer Status Report，BSR)中。
示例性地，该SR中用于请求网络设备调度或配置传输资源的信息可以仅包括该第一信息，也可以包括用于请求网络设备调度或配置除该第二传输资源之外的其他资源的信息。
示例性地，该BSR可以是周期性或非周期性的BSR。
当然，在其他可替代实施例中，该第一信息也可以携带在上行控制信息(Uplink Control Information，UCI)或其他上行信息中，本申请对此不作具体限定。
在一些实施例中，所述第一信息由物理上行控制信道(Physical Uplink Control Channel，PUCCH)和/或物理上行共享信道(Physical Uplink Shared Channel，PUSCH)承载。
当然，在其他可替代实施例中，该第一信息也可以由物理随机接入信道(Physical Random Access Channel，PRACH)或其他物理上行信道承载，本申请对此不作具体限定。
在一些实施例中，第一终端设备采用资源侦听的方式，在所述激活时间段内确定所述第二传输资源。
示例性地，该第一终端设备对至少一个第一传输资源中的部分或全部第一传输资源进行的LBT成功和/或向该第二终端设备发送唤醒信号之后，该第一终端设备采用资源侦听的方式在该唤醒信号对应 的激活时间段内确定该第二传输资源。
示例性地，该第一终端设备在对至少一个第一传输资源进行LBT之前，采用资源侦听的方式，在所述至少一个第一传输资源上传输的唤醒信号对应的激活时间段内确定该第二传输资源。
在一些实施例中，第一终端设备按照以下方式确定该第二传输资源：
确定资源选择窗和资源侦听窗；初始化资源集合；所述资源集合包括所述资源选择窗内的候选资源；基于所述资源侦听窗内侦听到的侧行控制信息和/或未侦听时间单元，对所述资源集合内的候选资源进行资源排除，得到经过资源排除的资源集合；若所述经过资源排除的资源集合内存在位于所述激活时间段内的候选资源，则在所述经过资源排除的资源集合中的位于所述激活时间段内的候选资源中确定所述第二传输资源。
示例性地，该资源侦听窗内侦听到的侧行控制信息可以是上文涉及的第一侧行控制信息。
示例性地，该第一终端设备的物理层先确定资源选择窗和资源侦听窗；然后初始化资源集合；该资源集合包括该资源选择窗内的候选资源；接着，该第一终端设备的物理层基于该资源侦听窗内侦听到的侧行控制信息和/或未侦听时间单元，对该资源集合内的候选资源进行资源排除，得到经过资源排除的资源集合；若经过资源排除的资源集合内存在位于该激活时间段内的候选资源，该第一终端设备的物理层将经过资源排除的资源集合上报至该第一终端设备的高层；该第一终端设备的高层在经过资源排除的资源集合中的位于该激活时间段内的候选资源中确定该第二传输资源。该第一终端设备的高层可以包括物理层之上的协议层。例如，该第一终端设备的高层可以是媒体接入控制(Media Access Control，MAC)层或其他协议层。
在一些实施例中，所述方法200还可包括：
若所述经过资源排除的资源集合内不存在位于所述激活时间段内的候选资源，则第一终端设备选择位于所述激活时间段内的至少一个候选资源添加到所述经过资源排除的资源集合后，在所述经过资源排除的资源集合中的位于所述激活时间段内的候选资源中确定所述第二传输资源。
示例性地，若经过资源排除的资源集合内不存在位于该激活时间段内的候选资源，则该第一终端设备的物理层选择位于该激活时间段内的至少一个候选资源添加到经过资源排除的资源集合后，将经过资源排除后的资源集合(即包括所述至少一个候选资源的资源集合)上报至该第一终端设备的高层，以便该第一终端设备的高层在经过资源排除的资源集合中的位于该激活时间段内的候选资源(即所述至少一个候选资源)中确定该第二传输资源。换言之，若将该第一终端设备的物理层选择位于该激活时间段内的至少一个候选资源添加到经过资源排除的资源集合后，得到的资源集合记为经过资源添加的资源集合，则该第一终端设备的物理层将经过资源添加的资源集合上报至该第一终端设备的高层，以便该第一终端设备的高层在经过资源添加的资源集合中的位于该激活时间段内的候选资源中确定该第二传输资源。
示例性地，所述至少一个候选资源的数量可以是预定义、网络设备指示的、或第一终端设备确定的。
例如，该所述至少一个候选资源的数量为预定义的数值时，该第一终端设备可以从该第一终端设备存储的信息中获取该所述至少一个候选资源的数量。该所述至少一个候选资源的数量为网络设备指示的数值时，该第一终端设备可以在向第二终端设备发送唤醒信号之后或对用于发送该唤醒信号的至少一个第一传输资源进行LBT之前接收网络设备发送的用于指示该所述至少一个候选资源的数量的信息。该所述至少一个候选资源的数量为该第一终端设备确定的信息时，该第一终端设备可以在预定义的多个候选资源中确定该所述至少一个候选资源的数量，例如，该第一终端设备可以基于该第一终端设备的标识或其他信息，按照预定义的规则在该多个候选资源中确定该所述至少一个候选资源的数量。当然，在其他可替代实施例中，该所述至少一个候选资源的数量也可以是该第一终端设备和该网络设备通过协商确定或取决于终端实现，本申请对此不作具体限定。
示例性地，所述至少一个候选资源的数量可以是1或大于1的数值。
示例性地，若经过资源排除的资源集合内不存在位于该激活时间段内的候选资源，则第一终端设备选择位于该激活时间段内的Y个候选资源添加到经过资源排除的资源集合后，在经过资源排除的资源集合中的位于该激活时间段内的候选资源(即该Y个候选资源)中确定该第二传输资源。其中，Y可以是预定义、网络设备指示的、或第一终端设备确定的。
在一些实施例中，第一终端设备将所述激活时间段内随机选择的资源，确定为所述第二传输资源。
示例性地，该第一终端设备对至少一个第一传输资源中的部分或全部第一传输资源进行的LBT成功和/或向该第二终端设备发送唤醒信号之后，该第一终端设备将该唤醒信号对应的激活时间段内随机选择的资源，确定为该第二传输资源。
示例性地，该第一终端设备在对至少一个第一传输资源进行LBT之前，将所述至少一个第一传输资源上传输的唤醒信号对应的激活时间段内随机选择的资源，确定为该第二传输资源。
示例性地，该第一终端设备的高层将该激活时间段内随机选择的资源，确定为该第二传输资源。该第一终端设备的高层可以包括物理层之上的协议层。
当然，在其他可替代实施例中，该第一终端设备也可以基于辅助信息，在将该激活时间段内确定该第二传输资源。该辅助信息包括但不限于：该第一终端设备的标识、该第一终端设备所属的设备组的标识、该激活时间段内的资源单元的数量等信息。
值得注意的是，该第一终端设备在对至少一个第一传输资源进行LBT之前确定该第二传输资源时，有可能需要重新确定该第二传输资源。本实施例中，初次确定该第二传输资源的方式和重新确定该第二传输资源的方式可以相同，也可以不同。例如，若对所述至少一个第一传输资源进行的LBT均失败，则该第一终端设备可以基于网络设备重新发送的调度信息或配置信息重新确定所述第二传输资源。再如，若对所述至少一个第一传输资源进行的LBT均失败，则该第一终端设备触发资源重选并重新确定所述第二传输资源，例如基于资源侦听进行重选或基于随机选择进行重选。为避免重复，此处不再对齐进行赘述。
在一些实施例中，所述激活时间段包括在时域上连续或不连续的多个时间段。
换言之，该激活时间段在时域上可以连续也可以不连续。
示例性地，该多个时间段中的每一个时间段可包括连续的至少一个时间单元。该时间单元包括但不限于：帧、子帧、时隙、符号等单元。
在一些实施例中，所述激活时间段包括一个或多个非连续接收(Discontinuous Reception，DRX)周期的激活期。
示例性地，该激活时间段可根据该第一终端设备和/或该第一终端设备的对端(包括该第二终端设备)的DRX配置确定。例如，网络设备可以通过drx-onDurationTimer参数指示激活期(On Duration)时间段的长度，可以通过drx-CycleStartOffset和drx-SlotOffset指示DRX周期(DRX Cycle)的起始位置。该第一终端设备和/或该第一终端设备的对端(包括该第二终端设备)根据上述参数，在DRX Cycle的起始位置启动长度为drx-onDurationTimer参数指示的值的定时器，在定时器减为0前，保持激活状态。
示例性地，该激活时间段包括该唤醒信号之后的一个或多个DRX周期的激活期。
示例性地，该激活时间段包括该唤醒信号之后间隔有第一时长的一个或多个DRX周期的激活期。该第一时长可以是预定义、网络设备指示的、或第一终端设备确定的。
示例性地，该DRX周期可以是该第二终端设备的DRX的周期。
在一些实施例中，所述激活时间段包括所述唤醒信号对应的最近一个非连续接收DRX周期的激活期。
示例性地，该唤醒信号对应的最近一个DRX周期可以是该唤醒信号之后的第一个DRX周期的激活期。
在一些实施例中，所述第一传输资源由网络设备调度或配置。
示例性地，所述至少一个第一传输资源由网络设备调度或配置。
示例性地，该第一传输资源可以是网络设备通过下行控制信息(Downlink Control Information，DCI)或其他信息调度的资源。或该第一传输资源可以是网络设备通过媒体接入控制(Media Access Control，MAC)控制元素(Control Element，CE)或其他信息配置的资源。
示例性地，该第一传输资源为网络设备调度或配置的侧行免授权资源。
示例性地，该第一传输资源由网络设备配置或调度的信息确定，该网络设备配置或调度的信息可以包括以下中的至少一项：
该第一传输资源在时域上的起始位置信息、该第一传输资源在时域上的结束位置信息、该第一传输资源在时域上的长度、该第一传输资源在时域上的位置信息、该第一传输资源在频域上的起始位置信息、该第一传输资源在频域上的结束位置信息、该第一传输资源在频域上的长度、该第一传输资源在频域上的位置信息。
示例性地，该第一传输资源由网络设备配置或调度的信息确定，该网络设备配置或调度的信息可以包括该第一传输资源的时域范围和/或该第一传输资源的频域范围。
例如，该网络设备配置或调度的信息包括该第一传输资源的时域范围时，该第一终端设备在该时域范围内确定该第一传输资源的时域位置。例如，该第一终端设备在该时域范围内随机确定该第一传输资源的时域位置。再如，该第一终端设备基于该第一终端设备的标识或其他信息在该时域范围内确定该第一传输资源的时域位置。类似的，该网络设备配置或调度的信息包括该第一传输资源的频域范围时，该第一终端设备在该频域范围内确定该第一传输资源的频域位置。例如，该第一终端设备在该频域范围内随机确定该第一传输资源的频域位置。再如，该第一终端设备基于该第一终端设备的标识或其他信息在 该频域范围内确定该第一传输资源的频域位置。
在一些实施例中，所述第一传输资源为所述第一终端设备确定的资源。
示例性地，所述至少一个第一传输资源为该第一终端设备随机确定的资源。
示例性地，所述至少一个第一传输资源为该第一终端设备采用资源侦听的方式确定的资源。
例如，该第一终端设备的物理层先确定资源选择窗和资源侦听窗；然后初始化资源集合；该资源集合包括该资源选择窗内的候选资源；接着，该第一终端设备的物理层基于该资源侦听窗内侦听到的侧行控制信息(例如上文涉及的第一控制信息)和/或未侦听时间单元，对该资源集合内的候选资源进行资源排除，得到经过资源排除的资源集合，并将经过资源排除的资源集合上报至该第一终端设备的高层；该第一终端设备的高层在经过资源排除的资源集合中确定该第一传输资源。例如，该第一终端设备的高层在经过资源排除的资源集合中随机确定该第一传输资源。该第一终端设备的高层可以包括物理层之上的协议层。例如，该第一终端设备的高层可以是媒体接入控制(Media Access Control，MAC)层或其他协议层。
在一些实施例中，所述第一传输资源包括以下中的至少一项：物理侧行反馈信道(Physical Sidelink Feedback Channel，PSFCH)、物理侧行控制信道(Physical Sidelink Control Channel，PSCCH)资源、物理侧行共享信道(Physical Sidelink Shared Channel，PSSCH)资源。
当然，在其他可替代实施例中，该第一传输资源也可以是物理随机接入信道(Physical Random Access Channel，PRACH)、物理侧行触发信道(Physical Sidelink Triggering Channel，PSTCH)或其他物理侧行信道，本申请对此不作具体限定。
在一些实施例中，所述唤醒信号为基于序列的信号。
在一些实施例中，所述唤醒信号为侧行控制信息。
示例性地，该唤醒信号可以为上文涉及的第一侧行控制信息，或者为上文涉及的第二控制信息。
在一些实施例中，所述唤醒信号为MAC CE。
在一些实施例中，所述唤醒信号为PC5无线资源控制(Radio Resource Control，RRC)信令。
示例性地，PC5为终端与终端之间的通信接口。
当然，在其他可替代实施例中，该唤醒信号也可以是其他类型的信号或信息，本申请对此不作具体限定。
在一些实施例中，所述唤醒信号由以下中的至少一项承载：PSFCH、PSCCH、PSSCH。
当然，在其他可替代实施例中，该唤醒信号也可以由PRACH、PSTCH或其他物理侧行信道承载，本申请对此不作具体限定。
在一些实施例中，所述第一物理侧行信道包括PSCCH和/或PSSCH。
当然，在其他可替代实施例中，该第一物理侧行信道也可以是PSFCH、PRACH、PSTCH或其他物理侧行信道，本申请对此不作具体限定。
图11是本申请实施例提供的无线通信方法的另一示例。
如图11所示，第一终端设备的第一传输资源由网络设备调度或配置、或由该第一终端设备确定。该第一传输资源为PSFCH资源、PSCCH资源或PSSCH资源。该第一传输资源用于第一终端设备传输唤醒信号。该唤醒信号为基于序列的信号、侧行控制信息(例如上文涉及的第一侧行控制信息或第二侧行控制信息)、Mac CE或PC5-RRC信令。该第一终端设备在第一传输资源前进行LBT，该LBT类型为Type 1或2A或2B或2C。若LBT成功，则该第一终端设备在LBT成功的第一传输资源上传输唤醒信号，该唤醒信号对应一个激活时间段，例如该激活时间段为该唤醒信号最近一个DRX周期的激活期(On duration)，该DRX周期和激活期可以根据该第一终端设备和/或该第一终端设备的接收终端(例如第二终端设备)的DRX配置确定。当该第一终端设备在第一传输资源上成功发送唤醒信号后，如果接收终端成功接收到该唤醒信号，该接收端将在唤醒信号对应的激活时间段(例如该唤醒信号最近一个DRX周期的激活期)内检测第一物理侧行信道(例如PSCCH和/或PSSCH)，否则该接收端在该激活期内不检测该第一物理侧行信道。
示例性地，从确定第二传输资源和LBT的先后顺序出发，该第一终端设备可采用以下方式中的任一方式确定该第二传输资源：
方式1：
该第一终端设备在第一传输资源上成功传输唤醒信号后，确定第二传输资源。例如，该第一终端设备在第一传输资源上成功传输唤醒信号后，在该唤醒信号对应的激活时间段内确定该第二传输资源。该第二传输资源用于传输第一物理侧行信道(例如PSCCH和/或PSSCH)。该第二传输资源用于一个TB的初传。
本实施例中，该第一终端设备在发送唤醒信号后再确定第二传输资源时，能够保证该第二传输资源的有效性，进而不仅能够解决非授权频谱上LBT失败的问题，还能够使得WUS+DRX的机制可以工作在SL-U系统上，节省该第二终端设备的能耗。
方式2：
该第一终端设备对第一传输资源进行LBT之前确定该第二传输资源。例如，该第一终端设备在该第一传输资源上传输的唤醒信号对应的激活时间段内确定该第二传输资源。该第二传输资源用于传输第一物理侧行信道(例如PSCCH和/或PSSCH)。该第二传输资源用于一个TB的初传。
由于该第二传输资源是该第一终端设备对第一传输资源进行LBT之前确定的。因此，若该第一终端设备在该第一传输资源前进行的LBT成功，则可以正常在该第一传输资源上发送唤醒信号，即该第二传输资源可以用于传输该第一物理侧行信道。若该第一终端设备在该第一传输资源前进行的LBT失败，则该第一终端设备放弃该第二传输资源，或该第一终端设备可以重新确定第二传输资源。例如，该第一终端设备可以向网络设备发送用于请求网络设备为该第一终端设备重新配置或重新调度该第二传输资源的信息。又例如，该第一终端设备可以触发资源重选，并采用资源侦听的方式或随机选择的方式重选该第二传输资源。
本实施例中，该第一终端设备先确定该第二传输资源再对第一传输资源进行LBT时，若唤醒信号因为LBT失败没有成功发送，该第一终端设备放弃或重新确定该第二传输资源，不仅能够解决非授权频谱上LBT失败的问题，还能够使得WUS+DRX的机制可以工作在SL-U系统上，节省该第二终端设备的能耗。
示例性地，该第一终端设备可采用以下方式中的任一方式确定该第二传输资源：
方式1：
该第一终端设备基于网络设备发送的调度信息或配置信息，确定该第二传输资源。
例如，该第一终端设备向网络设备发送第一信息(例如1bit的信息)，网络设备收到该第一信息后为终端调度或配置该第二传输资源。具体地，若该第一终端设备向该第二终端设备发送唤醒信号之后，确定该第二传输资源，则可以在发送唤醒信号之后向该网络设备发送该第一信息；若该第一终端设备在对第一传输资源进行LBT之前确定该第二传输资源，则可以在对该第一传输资源进行LBT之前发送该第一信息。网络设备为该第一终端设备调度或配置的第二传输资源位于该第一终端设备发送的唤醒信号对应的激活时间段内，例如该激活时间段为该唤醒信号最近一个DRX周期的激活期。
方式2：
第一终端设备采用资源侦听的方式，在所述激活时间段内确定所述第二传输资源。
示例性地，该第一终端设备向该第二终端设备发送唤醒信号之后，该第一终端设备采用资源侦听的方式在该唤醒信号对应的激活时间段内确定该第二传输资源。或者，该第一终端设备在对第一传输资源进行LBT之前，采用资源侦听的方式，在第一传输资源上传输的唤醒信号对应的激活时间段内确定该第二传输资源。
示例性地，如图11所示，该第一终端设备确定n+T1到n+T2的资源选择窗，以及n-T0到n-Tproc,0的资源侦听窗，n为该第一终端设备触发资源选择或重选或高层触发物理层上报候选资源集合的时隙，T0,T1,T2,Tproc,0参见图7相关的描述。该第一终端设备初始化资源集合A，资源集合A包括资源选择窗内的候选资源，该第一终端设备根据资源侦听窗内侦听到的侧行控制信息(例如上文涉及的第一侧行控制信息)和/或未侦听时隙进行资源排除，在经过资源排除的资源集合A内选择位于唤醒信号(例如该第一终端设备在该第一传输资源上已经发送的或计划在第一传输资源上发送的唤醒信号)对应的激活时间段(例如该唤醒信号最近一个DRX周期的激活期)内的候选资源作为第二传输资源。如果在资源排除后确定的资源集合A中，该激活时间段内不存在剩余的候选资源，则该第一终端设备将选择至少一个位于该激活时间段内的候选资源包括在资源集合A中，再在资源集合A内选择位于该激活时间段内的候选资源作为第二传输资源。
方式3：
第一终端设备将该激活时间段内随机选择的资源，确定为该第二传输资源。
示例性地，该第一终端设备向该第二终端设备发送唤醒信号之后，该第一终端设备将该唤醒信号对应的激活时间段内随机选择的资源，确定为该第二传输资源。或者，该第一终端设备在对第一传输资源进行LBT之前，将该第一传输资源上传输的唤醒信号对应的激活时间段内随机选择的资源，确定为该第二传输资源。
以上结合附图详细描述了本申请的优选实施方式，但是，本申请并不限于上文涉及的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，在上文涉及的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，上文涉及的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。
上文结合图1至图11，详细描述了本申请的方法实施例，下文结合图12至图15，详细描述本申请的装置实施例。
图12是本申请实施例的第一终端设备300的示意性框图。
如图12所示，所述第一终端设备300可包括：
侦听单元310，用于对至少一个第一传输资源进行先听后说LBT；
发送单元320，用于在所述至少一个第一传输资源中LBT成功的第一传输资源上，向第二终端设备发送唤醒信号；
其中，所述唤醒信号对应的激活时间段包括第二传输资源，所述第二传输资源用于传输第一物理侧行信道。
在一些实施例中，所述发送单元320向第二终端设备发送唤醒信号之后，所述发送单元320还用于：
确定所述第二传输资源。
在一些实施例中，所述侦听单元310对至少一个第一传输资源进行先听后说LBT之前，所述发送单元320还用于：
确定所述第二传输资源。
在一些实施例中，所述发送单元320还用于：
若对所述至少一个第一传输资源进行的LBT均失败，则放弃或重新确定所述第二传输资源。
在一些实施例中，所述发送单元320具体用于：
基于网络设备发送的调度信息或配置信息，确定所述第二传输资源。
在一些实施例中，所述发送单元320具体用于：
向所述网络设备发送第一信息；
其中，所述第一信息用于请求所述网络设备为所述第一终端设备调度或配置所述第二传输资源。
在一些实施例中，所述第一信息为单个比特的信息，或所述第一信息为基于序列的信息。
在一些实施例中，所述第一信息携带在调度请求SR和/或缓冲状态报告BSR中，和/或，所述第一信息由物理上行控制信道PUCCH和/或物理上行共享信道PUSCH承载。
在一些实施例中，所述发送单元320具体用于：
采用资源侦听的方式，在所述激活时间段内确定所述第二传输资源。
在一些实施例中，所述发送单元320具体用于：
确定资源选择窗和资源侦听窗；
初始化资源集合；所述资源集合包括所述资源选择窗内的候选资源；
基于所述资源侦听窗内侦听到的侧行控制信息和/或未侦听时间单元，对所述资源集合内的候选资源进行资源排除，得到经过资源排除的资源集合；
若所述经过资源排除的资源集合内存在位于所述激活时间段内的候选资源，则在所述经过资源排除的资源集合中的位于所述激活时间段内的候选资源中确定所述第二传输资源。
在一些实施例中，所述发送单元320还用于：
若所述经过资源排除的资源集合内不存在位于所述激活时间段内的候选资源，则选择位于所述激活时间段内的至少一个候选资源添加到所述经过资源排除的资源集合后，在所述经过资源排除的资源集合中的位于所述激活时间段内的候选资源中确定所述第二传输资源。
在一些实施例中，所述发送单元320具体用于：
将所述激活时间段内随机选择的资源，确定为所述第二传输资源。
在一些实施例中，所述激活时间段包括在时域上连续或不连续的多个时间段。
在一些实施例中，所述激活时间段包括一个或多个非连续接收DRX周期的激活期。
在一些实施例中，所述激活时间段包括所述唤醒信号对应的最近一个非连续接收DRX周期的激活期。
在一些实施例中，所述第一传输资源由网络设备调度或配置，或所述第一传输资源为所述第一终端设备确定的资源。
在一些实施例中，所述第一传输资源包括以下中的至少一项：物理侧行反馈信道PSFCH资源、物理侧行控制信道PSCCH资源、物理侧行共享信道PSSCH资源。
在一些实施例中，所述唤醒信号为基于序列的信号，或所述唤醒信号为侧行控制信息，或所述唤醒信号为媒体接入控制控制元素MAC CE，或PC5无线资源控制RRC信令。
在一些实施例中，所述唤醒信号由以下中的至少一项承载：物理侧行反馈信道PSFCH、物理侧行控制信道PSCCH、物理侧行共享信道PSSCH。
在一些实施例中，所述第一物理侧行信道包括物理侧行控制信道PSCCH和/或物理侧行共享信道PSSCH。
应理解，装置实施例与方法实施例可以相互对应，类似的描述可以参照方法实施例。具体地，图12所示的第一终端设备300可以对应于执行本申请实施例的方法200中的相应主体，并且第一终端设备300中的各个单元的前述和其它操作和/或功能分别为了实现本申请实施例提供的各个方法中的相应流程，为了简洁，在此不再赘述。
图13是本申请实施例的第二终端设备400的示意性框图。
如图13所示，所述第二终端设备400可包括：
接收单元410，用于接收第一终端设备发送的唤醒信号；
其中，所述唤醒信号对应的激活时间段包括第二传输资源，所述第二传输资源用于传输第一物理侧行信道。
在一些实施例中，所述接收单元410具体用于：
在资源池中，检测所述第一终端设备发送的所述唤醒信号。
在一些实施例中，所述激活时间段包括在时域上连续或不连续的多个时间段。
在一些实施例中，所述激活时间段包括一个或多个非连续接收DRX周期的激活期。
在一些实施例中，所述激活时间段包括所述唤醒信号对应的最近一个非连续接收DRX周期的激活期。
在一些实施例中，所述唤醒信号为基于序列的信号，或所述唤醒信号为侧行控制信息，或所述唤醒信号为媒体接入控制控制元素MAC CE，或PC5无线资源控制RRC信令。
在一些实施例中，所述唤醒信号由以下中的至少一项承载：物理侧行反馈信道PSFCH、物理侧行控制信道PSCCH、物理侧行共享信道PSSCH。
在一些实施例中，所述第一物理侧行信道包括物理侧行控制信道PSCCH和/或物理侧行共享信道PSSCH。
应理解，装置实施例与方法实施例可以相互对应，类似的描述可以参照方法实施例。具体地，图13所示的第二终端设备400可以对应于执行本申请实施例的方法200中的相应主体，并且第二终端设备400中的各个单元的前述和其它操作和/或功能分别为了实现本申请实施例提供的各个方法中的相应流程，为了简洁，在此不再赘述。
上文中结合附图从功能模块的角度描述了本申请实施例的通信设备。应理解，该功能模块可以通过硬件形式实现，也可以通过软件形式的指令实现，还可以通过硬件和软件模块组合实现。具体地，本申请实施例中的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和/或软件形式的指令完成，结合本申请实施例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。可选地，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、电可擦写可编程存储器、寄存器等本领域的成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上文涉及的方法实施例中的步骤。
例如，上文涉及的侦听单元、发送单元或接收单元可由收发器实现。
图14是本申请实施例的通信设备500示意性结构图。
如图14所示，所述通信设备500可包括处理器510。
其中，处理器510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。
如图14所示，通信设备500还可以包括存储器520。
其中，该存储器520可以用于存储信息，还可以用于存储处理器510执行的代码、指令等。其中，处理器510可以从存储器520中调用并运行计算机程序，以实现本申请实施例中的方法。存储器520可以是独立于处理器510的一个单独的器件，也可以集成在处理器510中。
如图14所示，通信设备500还可以包括收发器530。
其中，处理器510可以控制该收发器530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。收发器530可以包括发射机和接收机。收发器530还可以进一步包括天线，天线的数量可以为一个或多个。
应当理解，该通信设备500中的各个组件通过总线系统相连，其中，总线系统除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。
还应理解，该通信设备500可为本申请实施例的第一终端设备，并且该通信设备500可以实现本申请实施例的各个方法中由第一终端设备实现的相应流程。也就是说，本申请实施例的通信设备500可对应于本申请实施例中的第一终端设备300，并可以对应于执行根据本申请实施例的方法200中的相应主体，为了简洁，在此不再赘述。类似地，该通信设备500可为本申请实施例的第二终端设备，并且该通信设备500可以实现本申请实施例的各个方法中由第二终端设备实现的相应流程，也就是说，本申请实施例的通信设备500可对应于本申请实施例中的第二终端设备400，并可以对应于执行根据本申请实施例的方法200中的相应主体，为了简洁，在此不再赘述。
此外，本申请实施例中还提供了一种芯片。
例如，芯片可能是一种集成电路芯片，具有信号的处理能力，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。所述芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。可选地，该芯片可应用到各种通信设备中，使得安装有该芯片的通信设备能够执行本申请实施例中的公开的各方法、步骤及逻辑框图。
图15是根据本申请实施例的芯片600的示意性结构图。
如图15所示，所述芯片600包括处理器610。
其中，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。
如图15所示，所述芯片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。该存储器620可以用于存储指示信息，还可以用于存储处理器610执行的代码、指令等。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。
如图15所示，所述芯片600还可以包括输入接口630。
其中，处理器610可以控制该输入接口630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。
如图15所示，所述芯片600还可以包括输出接口640。
其中，处理器610可以控制该输出接口640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。
应理解，所述芯片600可应用于本申请实施例中的第一终端设备，并且该芯片可以实现本申请实施例的各个方法中由第一终端设备实现的相应流程，也可以实现本申请实施例的各个方法中由第二终端设备实现的相应流程，为了简洁，在此不再赘述。
还应理解，该芯片600中的各个组件通过总线系统相连，其中，总线系统除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。
上文涉及的处理器可以包括但不限于：
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)、现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立元件门或者晶体管逻辑器件、分立硬件组件等等。
所述处理器可以用于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。结合本申请实施例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，结合其硬件完成上文涉及的方法的步骤。
上文涉及的存储器包括但不限于：
易失性存储器和/或非易失性存储器。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(synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。
应注意，本文描述的存储器旨在包括这些和其它任意适合类型的存储器。
本申请实施例中还提供了一种计算机可读存储介质，用于存储计算机程序。该计算机可读存储介质存储一个或多个程序，该一个或多个程序包括指令，该指令当被包括多个应用程序的便携式电子设备执行时，能够使该便携式电子设备执行本申请提供的无线通信方法。可选的，该计算机可读存储介质可应用于本申请实施例中的第一终端设备，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第一终端设备实现的相应流程，为了简洁，在此不再赘述。可选地，该计算机可读存储介质可应用于本申请实施例中的第二终端设备，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第二终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例中还提供了一种计算机程序产品，包括计算机程序。可选的，该计算机程序产品可应用于本申请实施例中的第一终端设备，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第一终端设备实现的相应流程，为了简洁，在此不再赘述。可选地，该计算机程序产品可应用于本申请实施例中的第二终端设备，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第二终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例中还提供了一种计算机程序。当该计算机程序被计算机执行时，使得计算机可以执行本申请提供的无线通信方法。可选的，该计算机程序可应用于本申请实施例中的第一终端设备，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第一终端设备实现的相应流程，为了简洁，在此不再赘述。可选的，该计算机程序可应用于本申请实施例中的第二终端设备，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第二终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请还提供了一种通信系统，所述通信系统可以包括上文涉及的第二终端设备和第一终端设备，以形成如图1所示的通信系统100，为了简洁，在此不再赘述。需要说明的是，本文中的术语“系统”等也可以称为“网络管理架构”或者“网络系统”等。
还应当理解，在本申请实施例和所附权利要求书中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请实施例。例如，在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”、“上文”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
所属领域的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实施例的范围。如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的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，或者终端设备等)执行本申请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、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
所属领域的技术人员还可以意识到，为描述的方便和简洁，上文描述的系统、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中单元或模块或组件的划分，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，多个单元或模块或组件可以结合或者可以集成到另一个系统，或一些单元或模块或组件可以忽略，或不执行。又例如，上述作为分离/显示部件说明的单元/模块/组件可以是或者也可以不是物理上分开的，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/模块/组件来实现本申请实施例的目的。最后，需要说明的是，上文中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。
以上内容，仅为本申请实施例的具体实施方式，但本申请实施例的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请实施例揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请实施例的保护范围之内。因此，本申请实施例的保护范围应以权利要求的保护范围为准。

Claims (36)

  1. 一种无线通信方法，其特征在于，所述方法适用于第一终端设备，所述方法包括：
    对至少一个第一传输资源进行先听后说LBT；
    在所述至少一个第一传输资源中LBT成功的第一传输资源上，向第二终端设备发送唤醒信号；
    其中，所述唤醒信号对应的激活时间段包括第二传输资源，所述第二传输资源用于传输第一物理侧行信道。
  2. 根据权利要求1所述的方法，其特征在于，所述向第二终端设备发送唤醒信号之后，所述方法还包括：
    确定所述第二传输资源。
  3. 根据权利要求1所述的方法，其特征在于，所述对至少一个第一传输资源进行先听后说LBT之前，所述方法还包括：
    确定所述第二传输资源。
  4. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    若对所述至少一个第一传输资源进行的LBT均失败，则放弃或重新确定所述第二传输资源。
  5. 根据权利要求2至4中任一项所述的方法，其特征在于，所述确定所述第二传输资源，包括：
    基于网络设备发送的调度信息或配置信息，确定所述第二传输资源。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    向所述网络设备发送第一信息；
    其中，所述第一信息用于请求所述网络设备为所述第一终端设备调度或配置所述第二传输资源。
  7. 根据权利要求6所述的方法，其特征在于，所述第一信息为单个比特的信息，或所述第一信息为基于序列的信息。
  8. 根据权利要求6所述的方法，其特征在于，所述第一信息携带在调度请求SR和/或缓冲状态报告BSR中，和/或，所述第一信息由物理上行控制信道PUCCH和/或物理上行共享信道PUSCH承载。
  9. 根据权利要求2至4中任一项所述的方法，其特征在于，所述确定所述第二传输资源，包括：
    采用资源侦听的方式，在所述激活时间段内确定所述第二传输资源。
  10. 根据权利要求9所述的方法，其特征在于，所述采用资源侦听的方式，在所述激活时间段内确定所述第二传输资源，包括：
    确定资源选择窗和资源侦听窗；
    初始化资源集合；所述资源集合包括所述资源选择窗内的候选资源；
    基于所述资源侦听窗内侦听到的侧行控制信息和/或未侦听时间单元，对所述资源集合内的候选资源进行资源排除，得到经过资源排除的资源集合；
    若所述经过资源排除的资源集合内存在位于所述激活时间段内的候选资源，则在所述经过资源排除的资源集合中的位于所述激活时间段内的候选资源中确定所述第二传输资源。
  11. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    若所述经过资源排除的资源集合内不存在位于所述激活时间段内的候选资源，则选择位于所述激活时间段内的至少一个候选资源添加到所述经过资源排除的资源集合后，在所述经过资源排除的资源集合中的位于所述激活时间段内的候选资源中确定所述第二传输资源。
  12. 根据权利要求2至4中任一项所述的方法，其特征在于，所述确定所述第二传输资源，包括：
    将所述激活时间段内随机选择的资源，确定为所述第二传输资源。
  13. 根据权利要求1至12中任一项所述的方法，其特征在于，所述激活时间段包括在时域上连续或不连续的多个时间段。
  14. 根据权利要求1至12中任一项所述的方法，其特征在于，所述激活时间段包括一个或多个非连续接收DRX周期的激活期。
  15. 根据权利要求1至12中任一项所述的方法，其特征在于，所述激活时间段包括所述唤醒信号对应的最近一个非连续接收DRX周期的激活期。
  16. 根据权利要求1至15中任一项所述的方法，其特征在于，所述第一传输资源由网络设备调度或配置，或所述第一传输资源为所述第一终端设备确定的资源。
  17. 根据权利要求1至16中任一项所述的方法，其特征在于，所述第一传输资源包括以下中的至少一项：物理侧行反馈信道PSFCH资源、物理侧行控制信道PSCCH资源、物理侧行共享信道PSSCH资源。
  18. 根据权利要求1至17中任一项所述的方法，其特征在于，所述唤醒信号为基于序列的信号， 或所述唤醒信号为侧行控制信息，或所述唤醒信号为媒体接入控制控制元素MAC CE，或PC5无线资源控制RRC信令。
  19. 根据权利要求1至18中任一项所述的方法，其特征在于，所述唤醒信号由以下中的至少一项承载：物理侧行反馈信道PSFCH、物理侧行控制信道PSCCH、物理侧行共享信道PSSCH。
  20. 根据权利要求1至19中任一项所述的方法，其特征在于，所述第一物理侧行信道包括物理侧行控制信道PSCCH和/或物理侧行共享信道PSSCH。
  21. 一种无线通信方法，其特征在于，所述方法适用于第二终端设备，所述方法包括：
    接收第一终端设备发送的唤醒信号；其中，所述唤醒信号对应的激活时间段包括第二传输资源，所述第二传输资源用于传输第一物理侧行信道。
  22. 根据权利要求21所述的方法，其特征在于，所述接收第一终端设备发送的唤醒信号，包括：
    在资源池中，检测所述第一终端设备发送的所述唤醒信号。
  23. 根据权利要求21或22所述的方法，其特征在于，所述激活时间段包括在时域上连续或不连续的多个时间段。
  24. 根据权利要求21或22所述的方法，其特征在于，所述激活时间段包括一个或多个非连续接收DRX周期的激活期。
  25. 根据权利要求21或22所述的方法，其特征在于，所述激活时间段包括所述唤醒信号对应的最近一个非连续接收DRX周期的激活期。
  26. 根据权利要求21至25中任一项所述的方法，其特征在于，所述唤醒信号为基于序列的信号，或所述唤醒信号为侧行控制信息，或所述唤醒信号为媒体接入控制控制元素MAC CE，或PC5无线资源控制RRC信令。
  27. 根据权利要求21至26中任一项所述的方法，其特征在于，所述唤醒信号由以下中的至少一项承载：物理侧行反馈信道PSFCH、物理侧行控制信道PSCCH、物理侧行共享信道PSSCH。
  28. 根据权利要求21至27中任一项所述的方法，其特征在于，所述第一物理侧行信道包括物理侧行控制信道PSCCH和/或物理侧行共享信道PSSCH。
  29. 一种第一终端设备，其特征在于，包括：
    侦听单元，用于对至少一个第一传输资源进行先听后说LBT；
    发送单元，用于在所述至少一个第一传输资源中LBT成功的第一传输资源上，向第二终端设备发送唤醒信号；
    其中，所述唤醒信号对应的激活时间段包括第二传输资源，所述第二传输资源用于传输第一物理侧行信道。
  30. 一种第二终端设备，其特征在于，包括：
    接收单元，用于接收第一终端设备发送的唤醒信号；其中，所述唤醒信号对应的激活时间段包括第二传输资源，所述第二传输资源用于传输第一物理侧行信道。
  31. 一种第一终端设备，其特征在于，包括：
    收发器、处理器和存储器，所述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，以使得所述收发器和/或所述处理器执行根据权利要求1至20中任一项所述的方法。
  32. 一种第二终端设备，其特征在于，包括：
    收发器、处理器和存储器，所述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，以使得所述收发器和/或所述处理器执行根据权利要求21至28中任一项所述的方法。
  33. 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根据权利要求1至20中任一项所述的方法或根据权利要求21至28中任一项所述的方法。
  34. 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，当所述计算机程序在计算机上运行时，使得计算机执行根据权利要求1至20中任一项所述的方法或根据权利要求21至28中任一项所述的方法。
  35. 一种计算机程序产品，其特征在于，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根据权利要求1至20中任一项所述的方法或根据权利要求21至28中任一项所述的方法。
  36. 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根据权利要求1至20中任一项所述的方法或根据权利要求21至28中任一项所述的方法。
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