WO2020164636A1 - 设备发现方法、装置及系统 - Google Patents

设备发现方法、装置及系统 Download PDF

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Publication number
WO2020164636A1
WO2020164636A1 PCT/CN2020/075575 CN2020075575W WO2020164636A1 WO 2020164636 A1 WO2020164636 A1 WO 2020164636A1 CN 2020075575 W CN2020075575 W CN 2020075575W WO 2020164636 A1 WO2020164636 A1 WO 2020164636A1
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WIPO (PCT)
Prior art keywords
terminal device
terminal
timing
discovery message
device discovery
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Application number
PCT/CN2020/075575
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English (en)
French (fr)
Inventor
鄂楠
王键
李宏宇
赵文龙
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20755057.5A priority Critical patent/EP3905736A4/en
Publication of WO2020164636A1 publication Critical patent/WO2020164636A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/005Discovery of network devices, e.g. terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/40Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • This application relates to the field of communication technology, and in particular to a device discovery method, device and system.
  • terminal devices can directly communicate through sidelink (SL).
  • SL sidelink
  • the terminal device can discover other terminal devices through the device discovery process, and then establish communication connections with other devices for information exchange.
  • LTE long term evolution
  • terminal equipment uses a physical sidelink discovery channel (PSDCH) for device discovery. That is, the terminal device uses the PSDCH to send a device discovery message to discover other terminal devices.
  • PSDCH physical sidelink discovery channel
  • 5G fifth-generation
  • the current device discovery methods used in LTE are not fully applicable to 5G systems, and it is urgent to propose a new device discovery method to meet the communication requirements of future terminal devices.
  • the embodiments of the present application provide a device discovery method, device, and system, which can meet the communication requirements of future terminal devices.
  • the embodiments of the present application provide a device discovery method, which is applied to a terminal device, or a chip system in a terminal device, and the method includes: first The terminal device monitors in the first time period using the first transceiver timing. If the first terminal device receives a device discovery message from the second terminal device within the first time period, the first terminal device sends a device discovery response to the second terminal device based on the device discovery message and based on the first transceiver sequence; A terminal device does not receive a device discovery message from the second terminal device within the first time period, and the first terminal device does not establish a connection with other terminal devices.
  • the first terminal device Any one of the following transceiver timing monitoring is used in the second time period: the first transceiver timing, the second transceiver timing, and the silent monitoring timing, where the second transceiver timing is opposite to the first transceiver timing, and the silent monitoring timing is used for the first terminal device to continuously monitor .
  • the transceiver timing of the first transceiver timing is opposite to the transceiver timing of the second transceiver timing.
  • the transmit beam time of the first transceiver timing is the receive beam timing of the second transceiver timing
  • the receive beam timing of the first transceiver timing is the transmit beam timing of the second transceiver timing.
  • the first terminal device when the first terminal device can monitor the device discovery message from the second terminal device, it indicates that the timing sequence of the first terminal device and the second terminal device are synchronized, and there is no need to adjust the transmission and reception timing of the first terminal device and the second terminal device.
  • the first terminal device may continue to use the first transceiving sequence to send a device discovery response to the second terminal device.
  • the first terminal device does not monitor the device discovery message from the second terminal device in the first time period, and the first terminal device is not connected to other terminal devices, it means that the first terminal device's transceiver timing is not suitable for the current communication requirements.
  • the first terminal device can randomly select a transceiver timing from a variety of available transceiver timings to monitor, so as to increase the success rate of monitoring, thereby increasing the success rate of device discovery and meeting the communication requirements of future terminal devices.
  • the first terminal device sends a device discovery response to the second terminal device based on the device discovery message and based on the first transceiver timing.
  • This can be specifically implemented as follows: the first terminal device determines the device discovery message according to the beam identifier And send a device discovery response to the second terminal device based on the first transceiver timing and the sending direction.
  • the method further includes: the first terminal device receives resource configuration information from the access network device, where the resource configuration information is used to indicate the time-frequency resources available to the first terminal device and/or indicate the first terminal device Available transmit and receive timing.
  • the method further includes: the first terminal device sends a resource request to the access network device, the resource request is used to request time-frequency resources that can be used by the first terminal device and/or request that the first terminal device can use The timing of sending and receiving.
  • the first terminal device monitoring can be specifically implemented as: the first terminal device monitoring through the physical side uplink shared channel PSSCH.
  • the first terminal device sending a device discovery response to the second terminal device may be specifically implemented as follows: the first terminal device sends a device discovery response to the second terminal device through the PSSCH.
  • the terminal device performs device discovery through the PSSCH.
  • the terminal device performs device discovery through the PSSCH without allocation.
  • the present application provides a device discovery method, which is applied to a second terminal device or a chip system of the second terminal device.
  • the method includes: the second terminal device sends a device discovery message to the first terminal device, and Receive a device discovery response from the first terminal device.
  • the device discovery message includes the first connection identifier, and/or the beam identifier, and/or the terminal identifier, and/or the identifier of the transmission and reception timing of the second terminal device.
  • the method further includes: the second terminal device receives resource configuration information from the access network device, where the resource configuration information is used to indicate the time-frequency resources available to the second terminal device and/or indicate the second terminal device Available transmit and receive timing.
  • the method further includes: the second terminal device sends a resource request to the access network device, the resource request is used to request time-frequency resources available to the second terminal device and/or request the second terminal device to be available The timing of sending and receiving.
  • the second terminal device sending the device discovery message to the first terminal device can be specifically implemented as: the second terminal device sends the device discovery message to the first terminal device through the physical side link shared channel PSSCH.
  • the second terminal device receives the device discovery response from the first terminal device, which may be specifically implemented as: the second terminal device receives the device discovery response from the first terminal device through the PSSCH.
  • this application provides a device discovery method, which is applied to an access network device or a chip system of an access network device, and the method includes: the access network device receives from a first terminal device or a second terminal device Resource request, sending resource configuration information.
  • the resource request is used to request time-frequency resources that can be used by the first terminal device or the second terminal device, and/or request the transmission and reception timing that the first terminal device or the second terminal device can use;
  • the resource configuration information is used to indicate the first terminal device Or the time-frequency resources that can be used by the second terminal device, and/or indicate the transmission and reception timing that can be used by the first terminal device or the second terminal device.
  • the method further includes: the access network device receives a resource request from the first terminal device or the second terminal device, and the resource request is used to request time-frequency resources available to the first terminal device or the second terminal device , And/or request the transmit and receive timing that the first terminal device or the second terminal device can use.
  • the present application provides a device discovery method applied to a first terminal device or a chip system of the first terminal device.
  • the method includes: the first terminal receives a first device discovery message from a second terminal, and The device discovery message is used to indicate the transmission and reception timing used by the second terminal; the first terminal sends a device discovery response at the receiving timing of the second terminal according to the first device discovery message.
  • the method further includes: within a preset time period, the first terminal does not listen to the first device discovery message at the first time sequence, then the first terminal switches the receiving and sending sequence from the first sequence to the second sequence ,
  • the first sequence includes the configuration sequence, or the opposite sequence of the configuration sequence, or the silent sequence
  • the second sequence includes the configuration sequence, or the opposite sequence of the configuration sequence, or the silent sequence
  • the receiving sequence in the sequence opposite to the configuration sequence is the configuration sequence
  • the sending sequence in the sequence opposite to the configuration sequence is the receiving sequence in the configuration sequence.
  • the first terminal can listen to third device discovery messages from other terminals.
  • the method further includes: the first terminal sends a device discovery response at the receiving timing of the second terminal according to the first device discovery message, which can be specifically implemented as follows: the first terminal determines the device discovery response according to the beam identifier The second sending direction is opposite to the first sending direction; the first terminal sends a device discovery response to the second terminal in the second sending direction at the receiving timing of the second terminal.
  • the method further includes: the first terminal sends a resource request to the access network device, and the resource request is used to request time-frequency resources used by the first terminal.
  • the first terminal receives a resource configuration message from the access network device, and the resource configuration message is used to configure the time-frequency resource used by the first terminal and configure the transceiver timing used by the first terminal.
  • the first terminal receiving the first device discovery message from the second terminal can be specifically implemented as: the first terminal receives the first device discovery message through the physical side link shared channel PSSCH.
  • this application provides a device discovery method applied to a first terminal device or a chip system of the first terminal device.
  • the method includes: the second terminal sends a first device discovery message to the first terminal, and the first device The discovery message is used to indicate the transceiver timing used by the second terminal; the second terminal receives the device discovery response from the first terminal at the receiving timing of the second terminal.
  • the second terminal sending the first device discovery message to the first terminal can be specifically implemented as follows: the second terminal sends the first device discovery message to the first terminal through the PSSCH.
  • the second terminal receives the device discovery response from the first terminal at the receiving timing of the second terminal, which can be specifically implemented as: the receiving timing of the second terminal at the second terminal is received from the first terminal through the PSSCH Device discovery response.
  • this application provides a device discovery method, which is applied to an access network device or a chip system of an access network device.
  • the method includes: the access network device sends a resource configuration message, and the resource configuration message is used to configure the time-frequency resource used by the first terminal and configure the transceiver timing used by the first terminal.
  • the method further includes: the access network device receives a resource request from the first terminal device, and the resource request is used to request time-frequency resources used by the first terminal.
  • the first device discovery message further includes a beam identifier, and the beam identifier is used to indicate the first sending direction of the first device discovery message.
  • the device discovery response further includes at least one of a beam identifier used to indicate the second sending direction, an identifier of the first terminal, and a timing sequence for receiving and sending of the first terminal. item.
  • the time-frequency resources include frequency-domain resources in the millimeter wave band.
  • the present application provides a device discovery method, which is applied to a device discovery system, and the system includes a first terminal device in any design of the foregoing first aspect and a second terminal device in any design of the foregoing second aspect, or , The system includes the first terminal device in any design of the foregoing fourth aspect and the second terminal device and the access network device in any design of the foregoing fifth aspect.
  • the system includes the first terminal device in any design of the first aspect, the second terminal device in any design of the second aspect, and the access network device in any design of the third aspect, or the system includes The first terminal device in any design of the foregoing fourth aspect, the second terminal device in any design of the foregoing fifth aspect, and the access network device in any design of the foregoing sixth aspect.
  • the method includes: the first terminal device monitors in a first time period using a first transceiver timing.
  • the second terminal device sends a device discovery message to the first terminal device.
  • the first terminal device If the first terminal device receives a device discovery message from the second terminal device within the first time period, the first terminal device sends a device discovery response to the second terminal device based on the device discovery message and based on the first transceiver timing.
  • the first terminal device If the first terminal device does not receive a device discovery message from the second terminal device within the first time period, and the first terminal device does not establish a connection with other terminal devices, the first terminal device will, after the first time period ends, Any one of the following transceiver timing monitoring is used in the second time period: the first transceiver timing, the second transceiver timing, and the silent monitoring timing, where the second transceiver timing is opposite to the first transceiver timing, and the silent monitoring timing is used for the first terminal device Keep listening.
  • the device discovery message includes the first connection identifier, and/or the beam identifier, and/or the terminal identifier, and/or the identifier of the transmission and reception timing of the second terminal device, and the beam identifier is used to indicate the device discovery message The sending direction.
  • the first connection identifier is used to indicate that the device discovery message is a message sent to the first terminal device after the second terminal device listens to the device discovery message from the first terminal device; the device discovery response is used to Instruct the first terminal device and the second terminal device to establish a connection.
  • the first connection identifier is used to indicate that the device discovery message is not a message sent to the first terminal device after the second terminal device listens to the device discovery message from the first terminal device; the device discovery response includes the first terminal device. 2.
  • the first terminal device sends a device discovery response to the second terminal device based on the device discovery message based on the first transceiver timing, including: the first terminal device determines the sending direction of the device discovery message according to the beam identifier , The first terminal device sends a device discovery response to the second terminal device based on the first transceiver timing and the sending direction.
  • the transceiver timing is used to indicate the rules of the transmission beam and/or the reception beam, and to indicate the direction of the transmission beam and/or the direction of the reception beam.
  • the method further includes: the access network device sends resource configuration information to the first terminal device, where the resource configuration information is used to indicate the time-frequency resources available to the first terminal device and/or indicate the first terminal device Usable transceiver timing;
  • the first terminal device receives resource configuration information from the access network device.
  • the method further includes: the first terminal device sends a resource request to the access network device, the resource request is used to request time-frequency resources that the first terminal device can use, and/or request that the first terminal device can The sending and receiving timing used.
  • the time-frequency resources that can be used by the first terminal device are pre-configured resources
  • the transceiver timing that can be used by the first terminal device is pre-configured timing
  • the pre-configured timing includes a first transceiver timing and a second transceiver timing.
  • the first terminal equipment monitoring includes: the first terminal equipment monitoring through the physical side link shared channel PSSCH.
  • the first terminal device sending the device discovery response to the second terminal device includes: the first terminal device sends the device discovery response to the second terminal device through the PSSCH.
  • the time-frequency resources include frequency-domain resources in the millimeter wave band.
  • an embodiment of the present application provides a device discovery device, which can realize the function of the first terminal device.
  • it can be the first terminal device or a component built into the first terminal device, such as the first terminal device.
  • the chip system of the device includes: a control unit for controlling the communication unit to monitor in the first time period using the first transceiver timing. It is also used for if the first terminal device receives the device discovery message from the second terminal device within the first time period, the first terminal device controls the communication unit to send to the second terminal device according to the device discovery message and based on the first transceiver timing Device discovery response.
  • the control communication unit uses any of the following transceiver timing monitoring: first transceiver timing, second transceiver timing, silent monitoring timing, where the second transceiver timing is opposite to the first transceiver timing, and silent monitoring The timing is used for the first terminal device to continuously monitor.
  • control unit is used to control the communication unit to send a device discovery response to the second terminal device based on the device discovery message and based on the first transceiver timing.
  • This may be specifically implemented as: used to determine the device based on the beam identification The sending direction of the message is discovered, and based on the first sending and receiving sequence, the communication unit is controlled to send a device discovery response to the second terminal device in the sending direction.
  • the communication unit is configured to receive resource configuration information from the access network device, and the resource configuration information is used to indicate the time-frequency resources that can be used by the first terminal device and/or indicate the resources that can be used by the first terminal device. Transceiving timing.
  • the communication unit is used to send a resource request to the access network device, and the resource request is used to request time-frequency resources that can be used by the first terminal device and/or request the transmission and reception timing that the first terminal device can use .
  • the communication unit is used for monitoring, which can be specifically implemented as: used for monitoring through the physical side uplink shared channel PSSCH.
  • the communication unit sending a device discovery response to the second terminal device may be specifically implemented as: sending a device discovery response to the second terminal device through the PSSCH.
  • the present application provides a device discovery device, which can implement the functions of the second terminal device in the foregoing aspects.
  • the device includes: a communication unit for sending a device discovery message to a first terminal device and receiving a device discovery response from the first terminal device.
  • the device discovery message includes the first connection identifier, and/or the beam identifier, and/or the terminal identifier, and/or the identifier of the transmission and reception timing of the second terminal device.
  • the communication unit is also used to receive resource configuration information from the access network device, and the resource configuration information is used to indicate the time-frequency resources available to the second terminal device and/or to indicate that the second terminal device can use The timing of sending and receiving.
  • the communication unit is also used to send a resource request to the access network device.
  • the resource request is used to request time-frequency resources that can be used by the second terminal device and/or request the transceiver that can be used by the second terminal device. Timing.
  • the communication unit is configured to send a device discovery message to the first terminal device, which may be specifically implemented as: sending the device discovery message to the first terminal device through the physical side link shared channel PSSCH.
  • the communication unit is configured to receive the device discovery response from the first terminal device, which may be specifically implemented as: receiving the device discovery response from the first terminal device through the PSSCH.
  • this application provides a device discovery device, which can implement the function of the access network device in any of the foregoing aspects.
  • the device includes: a communication unit, configured to receive a resource request from a first terminal device or a second terminal device, and also configured to send resource configuration information.
  • the resource request is used to request time-frequency resources that can be used by the first terminal device or the second terminal device, and/or request the transmission and reception timing that the first terminal device or the second terminal device can use;
  • the resource configuration information is used to indicate the first terminal device Or the time-frequency resources that can be used by the second terminal device, and/or indicate the transmission and reception timing that can be used by the first terminal device or the second terminal device.
  • the communication unit is also used to receive a resource request from the first terminal device or the second terminal device, and the resource request is used to request time-frequency resources that the first terminal device or the second terminal device can use, and / Or request the first terminal device or the second terminal device to use the transmission and reception timing.
  • an embodiment of the present application provides a device discovery device, which can realize the function of the first terminal device.
  • the device can be the first terminal device or a component built into the first terminal device, such as the first terminal device.
  • the device includes: a controller for controlling the communication interface to monitor in the first time period by using the first transceiver timing. It is also used for if the first terminal device receives the device discovery message from the second terminal device within the first time period, the first terminal device controls the communication interface to send to the second terminal device according to the device discovery message and based on the first transceiver timing Device discovery response.
  • the control communication interface adopts any of the following transceiver timing monitoring: first transceiver timing, second transceiver timing, silent monitoring timing, where the second transceiver timing is opposite to the first transceiver timing, silent monitoring The timing is used for the first terminal device to continuously monitor.
  • the controller is used to control the communication interface to send a device discovery response to the second terminal device based on the device discovery message and based on the first transceiver timing.
  • This can be specifically implemented as: used to determine the device based on the beam identification Discover the sending direction of the message, and based on the first sending and receiving sequence, control the communication interface to send a device discovery response to the second terminal device in the sending direction.
  • the communication interface is used to receive resource configuration information from the access network device, and the resource configuration information is used to indicate the time-frequency resources that can be used by the first terminal device and/or indicate the resources that can be used by the first terminal device. Transceiving timing.
  • the communication interface is used to send a resource request to the access network device, and the resource request is used to request time-frequency resources that can be used by the first terminal device and/or request the transmission and reception timing that the first terminal device can use .
  • the communication interface is used for monitoring, which can be specifically implemented as: used for monitoring through the physical side link shared channel PSSCH.
  • the communication interface sending the device discovery response to the second terminal device may be specifically implemented as: sending the device discovery response to the second terminal device through the PSSCH.
  • this application provides a device discovery device, which can implement the functions of the second terminal device in the foregoing aspects.
  • the device includes: a communication interface for sending a device discovery message to a first terminal device and receiving a device discovery response from the first terminal device.
  • the device discovery message includes the first connection identifier, and/or the beam identifier, and/or the terminal identifier, and/or the identifier of the transmission and reception timing of the second terminal device.
  • the communication interface is also used to receive resource configuration information from the access network device, and the resource configuration information is used to indicate the time-frequency resources that can be used by the second terminal device and/or indicate that the second terminal device can use The timing of sending and receiving.
  • the communication interface is also used to send a resource request to the access network device.
  • the resource request is used to request time-frequency resources that can be used by the second terminal device and/or request the transceiver that can be used by the second terminal device. Timing.
  • the communication interface is used to send the device discovery message to the first terminal device, which may be specifically implemented as: sending the device discovery message to the first terminal device through the physical side link shared channel PSSCH.
  • the communication interface is used to receive the device discovery response from the first terminal device, which may be specifically implemented as: receiving the device discovery response from the first terminal device through the PSSCH.
  • this application provides a device discovery device, which can implement the function of the access network device in any of the foregoing aspects.
  • the device includes: a communication interface for sending resource configuration information.
  • the resource configuration information is used to indicate the time-frequency resources that can be used by the first terminal device or the second terminal device, and/or indicate the transmission and reception timing that the first terminal device or the second terminal device can use.
  • the communication interface is also used to receive a resource request from the first terminal device or the second terminal device, and the resource request is used to request time-frequency resources that the first terminal device or the second terminal device can use, and / Or request the first terminal device or the second terminal device to use the transmission and reception timing.
  • the device discovery message includes the first connection identification, and/or beam identification, and/or terminal identification, and/or The identifier of the transmission and reception timing of the second terminal device; where the beam identifier is used to indicate the sending direction of the device discovery message.
  • the first connection identifier is used to indicate that the device discovery message is that the second terminal device listens to the device from the first terminal device A message sent to the first terminal device after the discovery message; the device discovery response is used to instruct the first terminal device and the second terminal device to establish a connection.
  • the first connection identifier is used to indicate that the device discovery message is not that the second terminal device monitors the device from the first terminal device A message sent to the first terminal device after the discovery message;
  • the device discovery response includes a second connection identifier, and the second connection identifier is used to instruct the first terminal device to monitor the device discovery message from the second terminal device.
  • the transmission and reception timing is used to indicate the rules of the transmission beam and/or the reception beam, and to indicate the direction and/or direction of the transmission beam.
  • the direction of the receiving beam is used to indicate the rules of the transmission beam and/or the reception beam, and to indicate the direction and/or direction of the transmission beam. The direction of the receiving beam.
  • the time-frequency resource that can be used by the first terminal device is a pre-configured resource
  • the transceiving timing that the first terminal device can use To pre-configure the timing, the pre-configured timing includes a first transceiver timing, a second transceiver timing, and a silent monitoring timing.
  • a pre-configured transceiving timing is used as the transceiving timing of device discovery.
  • the pre-configured transceiving timing is used for monitoring. In this way, the terminal device does not need to select one of multiple transceiver timings as the timing for monitoring through polling, which can reduce the power consumption of the terminal device.
  • the time-frequency resources include frequency-domain resources in the millimeter wave band. That is to say, using the above method, the device discovery message, device discovery response, etc. can be transmitted through the millimeter wave beam. On the one hand, since the millimeter wave beam can be directionally transmitted, the device discovery message, device discovery response, etc. are related to the direction.
  • the receiver can learn the sending direction of the millimeter wave beam through the received millimeter wave beam, so as to know the position relationship between the sender and the receiver, for example, the receiver is located in front of or behind the sender or to the left or right.
  • the directions of different beams can be distinguished, so that beams of different directions are spatially isolated and do not interfere with each other.
  • the present application provides a device discovery device, which is used to implement the function of the first terminal device in the eighth or eleventh aspect, or to implement the second terminal device in the ninth or twelfth aspect. , Or used to implement the function of the access network device in the tenth or thirteenth aspect.
  • the present application provides a device discovery device, which is capable of implementing the device discovery method of any of the foregoing aspects such as the first or second or third or fourth or fifth or sixth aspects.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions, and the modules may include a communication unit, a control unit, a processing unit, a storage unit, and the like.
  • a device discovery device including: a processor and a memory; the memory is used to store computer execution instructions.
  • the processor executes the computer execution instructions stored in the memory to The device discovery apparatus is made to execute the device discovery method according to any one of the first or second or third or fourth or fifth or sixth aspects.
  • a device discovery device including: a processor; the processor is configured to couple with a memory, and after reading an instruction in the memory, execute any one of the first to sixth aspects according to the instruction. Item's device discovery method.
  • an embodiment of the present application provides a device discovery device.
  • the device may be a chip system.
  • the chip system includes a processor and a memory for implementing the functions of the method described in any of the above aspects.
  • the chip system can be composed of chips, or can include chips and other discrete devices.
  • a device discovery device may be a circuit system, the circuit system includes a processing circuit or a chip, and the processing circuit is configured to execute the device discovery method according to any one of the foregoing aspects.
  • an embodiment of the present application also provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the method in any of the above aspects.
  • the embodiments of the present application also provide a computer program product, including instructions, which when run on a computer, cause the computer to execute the method in any of the above aspects.
  • an embodiment of the present application provides a system.
  • the system includes the first terminal device of the eighth aspect and the second terminal device of the ninth aspect, or the system includes the first terminal device of the eighth aspect, and the ninth aspect.
  • the second terminal device of the aspect and the access network device of the tenth aspect or the system includes the first terminal device of the eleventh aspect and the second terminal device of the twelfth aspect, or the system includes the first terminal device of the eleventh aspect.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the application
  • FIG. 2 is a schematic flowchart of a device discovery method provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of the transmission and reception sequence provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of a receiving and sending sequence provided by an embodiment of the application.
  • FIG. 5 is a schematic flowchart of a device discovery method provided by an embodiment of the application.
  • FIG. 6 is a schematic flowchart of a device discovery method provided by an embodiment of the application.
  • FIG. 7 is a schematic flowchart of a device discovery method provided by an embodiment of the application.
  • FIG. 8 is a schematic flowchart of a device discovery method provided by an embodiment of this application.
  • FIG. 9 is a schematic flowchart of a device discovery method provided by an embodiment of the application.
  • FIG. 10 is a schematic flowchart of a device discovery method provided by an embodiment of this application.
  • FIG. 11 is a schematic flowchart of a device discovery method provided by an embodiment of the application.
  • FIG. 12 is a schematic flowchart of a device discovery method provided by an embodiment of this application.
  • FIG. 13 is a schematic structural diagram of a device discovery apparatus provided by an embodiment of the application.
  • FIG. 14 is a schematic structural diagram of a device discovery apparatus provided by an embodiment of the application.
  • "at least one” generally refers to one or more.
  • “Multiple” usually means two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, both A and B exist, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects are in an "or” relationship.
  • the communication system includes a first terminal device, a second terminal device, and an access network device.
  • the aforementioned terminal device such as the first terminal device or the second terminal device, may be connected to the access network device through an air interface, so as to receive network services.
  • the above-mentioned access network equipment is mainly used to implement wireless physical layer functions, resource scheduling and wireless resource management, wireless access control, and mobility management functions.
  • the above-mentioned first terminal device and the second terminal device may also directly communicate through SL, such as V2X communication.
  • the above-mentioned resource pool used for direct communication via SL can be a resource pool configured by the access network device, such as the one used when the air interface of the first terminal device and the second terminal device and the access network device are connected normally
  • the resource pool may also be a resource pool pre-configured in the first terminal device and the second terminal device, for example, the resource pool configured in the terminal device in advance by the equipment manufacturer according to the protocol stipulation before the terminal device leaves the factory.
  • the foregoing first terminal device and the second terminal device communicate directly through SL, which may be vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, and vehicle to network (V2V) communication.
  • V2V vehicle to vehicle
  • V2I vehicle to infrastructure
  • V2V vehicle to network
  • V2N Vehicle-to-network
  • V2P vehicle-to-pedestrian
  • P2P pedestrian to pedestrian
  • the direct communication between terminal devices may also adopt other forms or other names of wireless connections, such as future wireless communication systems, 6G systems, etc., which are not limited in this application.
  • the above-mentioned access network device may refer to an access network device with a wireless transceiving function, may also refer to a chip system set in the access network device, or other forms.
  • the access network equipment includes, but is not limited to: access points (APs) in the Wi-Fi system, such as home wireless routers, wireless relay nodes, wireless backhaul nodes, transmission and reception points (TRP) Or transmission point (TP), eNB, radio network controller (RNC), node B (node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS) ), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (BBU), and can also be a 5G system, such as gNB in NR, or transmission point (TRP or TP), One or a group of antenna panels (including multiple antenna panels) of the base station in the 5G system, or may also be a network node that constitutes a gNB
  • the gNB may include a centralized unit (CU) and a distributed unit (DU).
  • the gNB may also include a radio unit (RU).
  • CU implements part of the functions of gNB
  • DU implements part of the functions of gNB.
  • CU implements radio resource control (radio resource control, RRC), packet data convergence protocol (PDCP) layer and service discovery application profile (SDAP) layer functions
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • SDAP service discovery application profile
  • DU implements wireless link
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • the network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU can be divided into network equipment in an access network (radio access network, RAN), and the CU can also be divided into network equipment in a core network (core network, CN), which is not limited here.
  • the aforementioned terminal equipment may be a user equipment with a wireless transceiver function or a chip system set in the user equipment.
  • the foregoing terminal equipment may also be referred to as a station (station, STA), user equipment (user equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile Device, user terminal, wireless communication device, user agent or user device.
  • the above-mentioned terminal equipment includes but not limited to: mobile phone, tablet computer (Pad), computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in transportation safety, wireless terminals in smart cities, and sensor equipment, such as monitoring Terminal etc.
  • FIG. 1 is only a simplified schematic diagram of an example for ease of understanding, and only shows terminal equipment and access network equipment (such as a base station).
  • the wireless communication system may also include other network devices or other terminal devices, which are not shown in FIG. 1.
  • the following describes the device discovery method provided by the embodiment of the present application with reference to the communication system shown in FIG. 1.
  • the following description mainly takes the access network equipment as the base station as an example, and here is a unified statement, and will not be repeated here.
  • the device discovery method provided by the embodiment of the present application includes the following steps:
  • S201 The first terminal device monitors in the first time period using the first transceiver timing.
  • terminal equipment monitoring specifically refers to terminal equipment monitoring through PSSCH.
  • the terminal device sending a device discovery message specifically refers to the terminal device sending a device discovery message through the PSSCH.
  • the terminal device sends a device discovery response, specifically referring to the terminal device sending a device discovery response through the PSSCH.
  • the terminal device performs device discovery through the PSSCH without allocation Dedicated channel to reduce channel overhead.
  • the time-frequency resource used by the first terminal device for device discovery may be a pre-configured time-frequency resource, or it may be issued by the access network device to the first terminal device, which is not limited in this embodiment of the application.
  • the time-frequency resources mentioned in the embodiments of the present application generally refer to time-frequency resources used for device discovery, and are described here in a unified manner.
  • the first transceiving timing may be a transceiving timing pre-configured by the manufacturer when the first terminal device leaves the factory, or the access network device may notify the first terminal device and indicate the first transceiving timing to the first terminal device.
  • the first terminal device uses a physical sidelink shared channel (physical sidelink shared channel, PSSCH) to monitor.
  • a physical sidelink shared channel physical sidelink shared channel, PSSCH
  • the first transceiver timing may be any of transceiver timing 1, transceiver timing 2, and silent monitoring timing.
  • the transceiver sequence 1 is opposite to the transceiver sequence 2. That is, the transmission time in the transmission and reception sequence 1 is the reception time in the transmission and reception sequence 2, and the reception time in the transmission and reception sequence 1 is the transmission time in the transmission and reception sequence 2.
  • the silent monitoring sequence is used for the first terminal device to continuously monitor, that is, when the first terminal device uses the silent monitoring sequence, the first terminal device can monitor other terminal devices.
  • silent monitoring sequence is only an exemplary name, and may also be other names, which is not limited in the embodiment of the present application.
  • the transmission and reception timing includes the rules for receiving or transmitting beams, such as the time slot or subframe in which the beam is transmitted or received, and the direction of the receiving or transmitting beam.
  • the black squares represent the transmit beam
  • the white squares represent the receive beam.
  • the beam generally refers to a millimeter wave beam
  • the terminal device transmits and receives device discovery messages, device discovery responses, etc., by transmitting and receiving the millimeter wave beam, which is hereby uniformly stated.
  • the numbers "1", “2", “3", and "4" indicate the direction of the millimeter wave beam.
  • the device discovery message, device discovery response, etc. can be transmitted through the millimeter wave beam.
  • the device discovery message, device discovery response, etc. are related to the direction.
  • the receiver can learn the sending direction of the millimeter wave beam through the received millimeter wave beam, so as to know the position relationship between the sender and the receiver, for example, the receiver is located in front of or behind the sender or to the left or right.
  • the directions of different beams can be distinguished, so that beams of different directions are spatially isolated and do not interfere with each other.
  • the transmission and reception sequence 1 in (a) in Fig. 3 indicates that on the 3# subframe, forward (exemplarily, in the direction of vehicle travel) It is the front, but not limited to, the terminal device sends the beam (corresponding to the black square 1 of the transceiving sequence 1), and in the 4# subframe, the beam is sent to the rear terminal device (corresponding to the black square 2 of the transceiving sequence 1) , On the 5# subframe, send the beam to the terminal device on the left (corresponding to the black square 3 of the transceiver timing 1), and on the 6# subframe, send the beam to the terminal device on the right (corresponding to the black square of the transceiver timing 1 4).
  • the transceiver sequence 1 in conjunction with specific application scenarios.
  • the first terminal device can send one or more Send beams in multiple directions, or receive beams from other terminal devices from one or more directions.
  • Fig. 4 shows a situation where the first terminal device transmits beams in 4 directions and receives beams from 4 directions.
  • the number “1" in the box of the transceiver sequence 1 means sending the beam forward
  • the number “2” means sending the beam backward
  • the number “3” means sending the beam to the left
  • the number “4" means Send the beam to the right.
  • the number “1” in the block of the transceiver sequence 1 indicates that the beam is received from the rear
  • the number “2” indicates that the beam is received from the front
  • the number “3” indicates that the beam is received from the right
  • the number "4" Indicates that the beam is received from the left.
  • the terminal device transceiver beam takes the terminal device transceiver beam to occupy one subframe.
  • the transmitted and received millimeter wave beam may also occupy other numbers of subframes.
  • one millimeter wave beam occupies 2 subframes.
  • the number of subframes occupied by one beam is not limited.
  • the terminal device takes the terminal device to send beams in 4 directions and the terminal device to receive beams from 4 directions as an example.
  • the terminal device can also only send beams to one or more of them according to communication requirements. Send the beam, or only receive the beam from one or more other directions.
  • the terminal device sends a beam to the terminal device in front on the 3# subframe to establish a communication connection with the terminal device in front, and sends the beam to the terminal device on the left in the subframe 5# to communicate with the terminal device on the left. Establish a communication connection, receive the beam of the front terminal device on the 7# subframe, and so on.
  • the transceiver timing 2 in Figure 3 (a) indicates that on the 3# subframe, the beam is received from the front terminal device (corresponding to the white square 2 of the transceiver timing 2), On the 4# subframe, the beam is received from the rear terminal device (corresponding to the white square 1 of the transceiver timing 2), and on the 5# subframe, the beam is received from the terminal device on the left (corresponding to the white square 3 of the transceiver timing 2) , On the 6# subframe, receive the beam from the terminal device on the right (corresponding to the white square 4 of the transceiver timing 2), and on the 7# subframe, send the beam to the front terminal device (corresponding to the black square 1 of the transceiver timing 2) ).
  • the silent monitoring sequence in Fig. 3(a) indicates that on the 3# subframe, the beam is received from the front terminal device (corresponding to the white square 2 in the silent monitoring sequence), and on the 4# subframe, from the rear
  • the terminal device receives the beam (corresponding to the white square 1 of the silent monitoring timing), on the 5# subframe, the beam is received from the left terminal device (corresponding to the white square 3 of the silent monitoring timing), and on the 6# subframe, from
  • the terminal device on the right receives the beam (corresponding to the white square 4 of the silent monitoring timing), on the 7# subframe, the beam is received from the front terminal device, on the 8# subframe, the beam is received from the rear terminal device, at 9
  • #subframe the beam is received from the terminal device on the left, and on the #10 subframe, the beam is received from the terminal device on the right.
  • the timing of sending and receiving between the terminal devices is likely to be out of sync, so that the terminal devices cannot monitor each other.
  • Discover messages to each other's devices By setting the silent monitoring sequence, the terminal device can be switched to the silent monitoring sequence first, and the monitoring time of the terminal device is increased, so as to increase the probability of successful monitoring of the terminal device, thereby increasing the probability of the terminal device successfully discovering other terminal devices.
  • the transceiving timing that can be used by the terminal may also be any transceiving timing in (b) in FIG. 3, or any transceiving timing in (c) in FIG. 3. Or, for other feasible transmission and reception timings, the embodiments of the present application will not list them one by one.
  • the terminal device can also receive the beam in a non-directional manner. See Figure 3 (d).
  • the timing of the reception beam corresponding to the white square is not marked with a number, that is It does not specify which direction to receive the beam at which time to receive the beam. For example, in the 7# subframe, the beam can be received from the front, the beam can be received from the rear, or the beam can be received from other directions.
  • the terminal device can transmit or receive beams within a continuous period of time.
  • the terminal device can transmit on subframes 3# to 6# The beam, in this way, reduces the time delay caused by switching the receiving and sending directions.
  • the transmit and receive timings that can be used by the terminal equipment can also be any transmit and receive timings in (e) in FIG. 3.
  • the terminal device sends a beam to the front on subframe 3#, and then switches the direction of receiving and sending, and the terminal device receives the beam from the front on subframe 4#.
  • the directions of the transmitting or receiving beam indicated by the transceiver timing can also include 8 directions, which are left oblique front, right front, right oblique front, left, right, and left oblique. Rear, directly behind, diagonally to the right.
  • Figure 3 (f) the specific implementation of the transceiver sequence 1, the transceiver sequence 2 and the silent monitoring sequence. Among them, the meaning of each square can be referred to the above, and will not be repeated here.
  • the front of the 4 directions may only refer to the front, and the rear may only refer to the rear.
  • the front of the four directions may refer to the front and the oblique front, and the rear may refer to the front and the oblique rear.
  • the foregoing description mainly takes the sending and receiving sequence indicating 4 or 8 directions as an example.
  • the sending and receiving sequence specifically indicates several beam directions, which can be set separately, which is not limited in the embodiment of the present application.
  • the first terminal device If the first terminal device receives a device discovery message from the second terminal device within the first time period, the first terminal device sends a device discovery response to the second terminal device based on the device discovery message and based on the first transceiver timing. .
  • the second terminal device receives the device discovery response from the first terminal device.
  • the first terminal device sends a device discovery response to the second terminal device through the PSSCH.
  • the first terminal device can listen to the device discovery message from the second terminal device through the PSSCH, it means that the timing of the first terminal device and the second terminal device are synchronized. In this case, the first terminal device and The second terminal device does not need to adjust the transmission and reception timing, and the first terminal device continues to use the first transmission and reception timing to send a device discovery response to the second terminal device, so as to subsequently establish a communication connection between the first terminal device and the second terminal device.
  • the first transceiving sequence is the transceiving sequence 1 in Figure 3(a)
  • the first terminal device monitors the device discovery message from the second terminal device through the PSSCH, continue to use the transceiving sequence 1 and the second Device discovery between terminal devices.
  • the first terminal device sends a device discovery response to the second terminal device at the transmission beam timing of the transceiver sequence 1, such as subframe 3# or subframe 4# or subframe 5# or subframe 6#.
  • the device discovery message includes a terminal identification.
  • the device discovery message from the second terminal device includes the identification of the second terminal device (international mobile subscriber identification number (IMSI)) and international mobile equipment identification number. (international mobile equipment identity, IMEI), etc.).
  • IMSI international mobile subscriber identification number
  • IMEI international mobile equipment identity
  • the device discovery message displays the beam identifier.
  • the beam identifier is used to indicate the sending direction of the device discovery message. Sending directions include but are not limited to front, back, left, and right.
  • the beam identification can be 0 (binary 00), 1 (binary 01), 2 (binary 10), 3 (11), where 00 means front, 01 means rear, 10 means left, 11 means right .
  • the first terminal device monitors the device discovery message from the second terminal device, it can acquire the location of the second terminal device according to the beam identifier.
  • the first terminal device is a mobile phone in car A
  • the second terminal device is a mobile phone in a vehicle behind car A.
  • the first terminal device is listening to the second terminal device. After the device discovery message of the terminal device, it can be learned that the second terminal device is located behind itself according to the beam identifier 00.
  • which specific beam identifier indicates which transmission direction can be flexibly set according to actual application scenarios, which is not limited in the embodiment of the present application.
  • the device discovery message can also implicitly indicate its sending direction.
  • the transceiver timing includes the rules for receiving or transmitting beams, such as the time slot or subframe in which the beam is transmitted or received, and the direction of the receiving or transmitting beam, the first terminal device can receive The timing of the device discovery message learns the sending direction of the device discovery message.
  • the first terminal device uses the transceiver sequence 1 shown in (a) in Figure 3 to monitor, and in subframe 8# it monitors the device discovery message from the second terminal device .
  • the device discovery message monitored in subframe 8# is a message received from the rear, indicating that the second terminal device is behind the first terminal device.
  • S202 may be specifically implemented as: the first terminal device sends a device discovery response based on the first transceiving sequence and the sending direction of the device discovery message from the second terminal device.
  • the first transceiving sequence is transceiving sequence 1
  • the device of the second terminal device finds that the message comes from the front of the first terminal device, and the first terminal device uses transceiving sequence 1 to feed back the device discovery response to the second terminal device in front.
  • the device discovery message from the second terminal device includes an identifier of the transmission and reception timing of the second terminal device.
  • the identifier of the transceiver sequence 1 is 0 (binary 00)
  • the identifier of the transceiver timing 2 is 1 (binary is 01)
  • the silent monitor timing identifier is 2 (binary Is 10).
  • the second terminal device uses the transceiving sequence 2, and the device discovery message from the second terminal device includes the identifier 10 of the transceiving sequence.
  • the device discovery message from the second terminal device includes a first connection identifier
  • the first connection identifier is used to indicate whether the device discovery message is for the second terminal device to monitor the device discovery message from the first terminal device, and then send the message to the first terminal device.
  • the first connection identifier is 0 or 1.
  • the device discovery message is not a message sent to the first terminal device after the second terminal device monitors the device discovery message from the first terminal device, that is, the second terminal device is not listening
  • the device discovery message is actively sent to the first terminal device.
  • the device discovery message includes the first connection identifier 0, in order to establish a communication connection with the first terminal device.
  • the first terminal device after receiving the device discovery message with the first connection identifier of 0, the first terminal device feeds back the device discovery response to the second terminal device.
  • the device discovery response sent by the first terminal device includes the second connection identifier 1.
  • the second connection identifier 1 is used to indicate that the first terminal device has listened to the device discovery message from the second terminal device. Subsequently, after receiving the device discovery response with the second connection identifier being 1, the second terminal device may feed back the establishment of a communication connection instruction to the first terminal device to instruct the establishment of a communication connection between the first terminal device and the second terminal device.
  • the first connection identifier being 1 indicates that the device discovery message is a message sent to the first terminal device after the second terminal device listens to the device discovery message from the first terminal device, that is, the first terminal device first sends the message to the second terminal device.
  • the device sends a device discovery message, and the device discovery message sent by the first terminal device includes the second connection identifier 0.
  • the second terminal device monitors the device discovery message from the first terminal device, it feeds back the device discovery message to the first terminal device, and the device discovery message fed back by the second terminal device includes the first connection identifier 1.
  • the first terminal device monitors the device discovery message with the first connection identifier of 1, it sends a device discovery response to the second terminal device.
  • the device discovery response is used to instruct the first terminal device and the second terminal device to establish a connection. connection.
  • any one of the following transceiver timing monitoring is used in the second time period:
  • the terminal device is provided with a timer, and the timing duration of the timer may be set to the first time period.
  • the terminal device uses a certain transceiver timing to monitor. If the terminal device does not listen to device discovery messages from other terminal devices when the timer expires, and the terminal device does not establish a communication connection with other terminal devices, the terminal device uses the transceiver timing sequence It may not be suitable for itself, then the terminal device switches the sending and receiving sequence when the timer expires. For example, the terminal device uses the transceiver sequence 1 shown in Figure 3(a) to monitor.
  • the terminal device When the timer expires, that is, within the first time period, the terminal device does not monitor the device discovery messages of other terminal devices, and After the first time period ends, the terminal device does not have a communication connection with other terminal devices, then after the first time period ends, the terminal device randomly selects a transmission and reception sequence from (a) shown in Figure 3, for example, Select transceiver sequence 1 for monitoring, or select transceiver sequence 2 for monitoring. Subsequently, in the second time period, the terminal device uses the selected transceiver timing to monitor.
  • the timing duration of the timer (that is, the first time period) may be an integer multiple of the corresponding duration of the transceiver timing.
  • the timing duration of the timer can be the duration of subframes 3# to 10#, that is, every 8 subframes is a monitoring period. If the terminal device is in a monitoring period (8 If no device discovery messages or device discovery responses from other terminal devices are monitored, the terminal device monitors the adjusted receiving and sending timings on the 8 subframes of the next monitoring period.
  • the timer duration may also be twice the duration of subframes 3# to 10#. The embodiment of the present application does not limit the length of the timer duration.
  • the first terminal device when the first terminal device can listen to the device discovery message from the second terminal device, it indicates that the timing sequence of the first terminal device and the second terminal device are synchronized without adjusting the first terminal device and For the transceiver timing of the second terminal device, the first terminal device may continue to use the first transceiver timing to send a device discovery response to the second terminal device.
  • the first terminal device does not monitor the device discovery message from the second terminal device in the first time period, and the first terminal device is not connected to other terminal devices, it means that the first terminal device's transceiver timing is not suitable for the current communication requirements.
  • the first terminal device can randomly select a transceiver timing from a variety of available transceiver timings to monitor, so as to increase the success rate of monitoring, thereby increasing the success rate of device discovery and meeting the communication requirements of future terminal devices.
  • the following describes the device discovery method provided in the embodiments of the present application in combination with different scenarios.
  • the first terminal device first sends a device discovery message to the second terminal device, and within a period of time, the first terminal device uses the first transceiver sequence to monitor, the first terminal device and the second terminal device
  • the device discovery method provided in the embodiment of the present application may specifically include the following steps:
  • S501 The access network device sends resource configuration information to the first terminal device.
  • the first terminal device receives resource configuration information from the access network device.
  • the access network device sends a broadcast message.
  • the broadcast message carries resource configuration information.
  • the terminal devices served by the access network device can learn the resources available to each from the resource configuration information in the broadcast message.
  • the broadcast message is, for example, but not limited to, a system information block (System Information Block, SIB).
  • SIB System Information Block
  • the resource configuration information is used to indicate the time-frequency resources that can be used by the first terminal device and/or indicate the transmission and reception timing that the first terminal device can use.
  • the resource configuration information is used to indicate the time-frequency resources that can be used by the first terminal device.
  • the transmit and receive timing that the first terminal device can use may be a pre-configured transmit and receive timing.
  • time-frequency resources include time-domain and frequency-domain resources.
  • the resource configuration information is used to indicate the available transceiver timing of the first terminal device.
  • the available time-frequency resource of the first terminal device may be a pre-configured time-frequency resource.
  • the resource configuration information is used to indicate the time-frequency resources that can be used by the first terminal device and the transceiving timing that the first terminal device can use.
  • the access network device can indicate the available time-frequency resource and the time-frequency resource and the time-sending and receiving sequence for the terminal device through one SIB, and the access network device can also indicate the available time-frequency resource and the time-frequency resource and the time-frequency resource and the time-frequency transmission and reception time sequence of the terminal device through two SIBs.
  • the first terminal device sends a resource request to the access network device, and the resource request is used to request time-frequency resources that can be used by the first terminal device and/or request a transceiving time sequence that the first terminal device can use.
  • the time-frequency resources usable by the first terminal device include frequency-domain resources in the millimeter wave band.
  • the first terminal device can transmit and receive millimeter wave beams for device-to-device (D2D) or V2X communication, or other forms of direct communication between devices.
  • D2D device-to-device
  • V2X V2X communication
  • the first terminal device can transmit and receive millimeter-wave beams.
  • the wave beam performs device discovery, thereby discovering other terminal devices, or being discovered by other devices.
  • the access network device indicates the available transceiver timing to the first terminal device, and there may be the following two methods:
  • the access network device sends at least one available transceiving time sequence to the first terminal device.
  • the usable transceiver timing is any one of the following transceiver timings: transceiver timing 1, transceiver timing 2, and silent monitoring timing.
  • the available transceiver timing is any one of the transceiver timing 1, transceiver timing 2, and the silent monitoring timing in Figure 3 (a).
  • the available transceiver timing is Figure 3 (b) Any one of the transceiver timing 1, the transceiver timing 2, the silent monitoring timing, for another example, the available transceiver timing is any one of the transceiver timing in Figure 3 (f), or other feasible transceiver timings, this application The embodiments will not be listed one by one.
  • the terminal device and the access network device are pre-configured with the sending and receiving time sequence and the identifier corresponding to the sending and receiving time sequence.
  • the access network device sends at least one identifier of the transceiver timing to the first terminal device, and the first terminal device can determine the transceiver timing used by itself according to the identifier of the transceiver timing.
  • the identification of transceiver timing 1 shown in Figure 3 (a) is 0 (binary is 00)
  • the identification of transceiver timing 2 is 1 (binary is 01)
  • the silent monitoring timing is Identified as 2 (10 in binary).
  • the access network device sends 00 (corresponding to the transceiving sequence 1) to the first terminal device, and the first terminal device determines to use the transceiving sequence 2 monitoring according to the pre-configured policy, etc., or the first terminal device determines to use the transceiving sequence 1 monitoring according to the pre-configured policy Or, the first terminal device determines to use the silent monitoring sequence to monitor according to the pre-configured policy.
  • the pre-configuration policy in the first terminal device may be pre-configured by the device manufacturer when it leaves the factory.
  • the access network device may also send 00 (corresponding to transceiving timing 1), 01 (corresponding to transceiving timing 2) to the first terminal device, and the first terminal device determines the used transceiving timing, for example, determines to use Transceiving sequence 2 monitoring.
  • the identifiers of the sending and receiving sequence 1, 2, and the silent monitoring sequence can also be other.
  • the identifier of the sending and receiving sequence 1 is 1 (binary is 01)
  • the identifier of the receiving and sending sequence 2 is 2 (binary is 10).
  • the identifier of the silent monitoring sequence is 3 (binary is 11)
  • the embodiment of the present application does not limit the identifier of each transceiver sequence.
  • the access network device may also send other forms of information to the terminal device to indicate the time sequence of sending and receiving that the terminal device can use, for example, sending information in the form of a table to indicate the sequence of sending and receiving.
  • sending information in the form of a table to indicate the sequence of sending and receiving.
  • the access network device sends resource configuration information to the second terminal device.
  • the second terminal device receives resource configuration information from the access network device.
  • the access network device sends a broadcast message, and the broadcast message carries resource configuration information.
  • the resource configuration information is used to indicate the time-frequency resources that can be used by the second terminal device, or used to indicate the transmission and reception timing that the second terminal device can use, or used to indicate the time-frequency resources and time-frequency resources that can be used by the second terminal device.
  • the second terminal device sends a resource request to the access network device, and the resource request is used to request time-frequency resources that can be used by the second terminal device and/or request a transceiving time sequence that the second terminal device can use.
  • the time-frequency resources that can be used by the second terminal device include frequency-domain resources in the millimeter wave band.
  • the transceiving timing that the second terminal device can use may be transceiving timing 1, or transceiving timing 2, or silent monitoring timing.
  • the order of execution of S501 and S502 is not limited, that is, the access network device may first send resource configuration information to the first terminal device, and then send resource configuration information to the second terminal device.
  • the resource configuration information is first sent to the second terminal device, and then the resource configuration information is sent to the first terminal device, or the access network device executes S501 and S502 at the same time.
  • the order in which the first terminal device and the second terminal device receive resource configuration information from the access network device may also include at least three situations.
  • the first terminal device sends a device discovery message to the second terminal device using the first transceiving sequence.
  • the second terminal device receives the device discovery message from the first terminal device.
  • the first terminal device sends a device discovery message to the second terminal device through the PSSCH.
  • the first transceiver timing is any one of the foregoing transceiver timing 1 and transceiver timing 2.
  • the first terminal device uses the transceiving sequence 1 to send a device discovery message to the second terminal device in front on subframe 3#.
  • the device discovery message sent by the first terminal device carries the second connection identifier 0, which is used to indicate that the device discovery message is a message actively sent by the first terminal device.
  • the device discovery message sent by the first terminal device carries a beam identifier 00, which indicates that the device discovery message is sent forward.
  • the device discovery message sent by the first terminal device carries the identifier of the first terminal device.
  • the device discovery message sent by the first terminal device carries the transceiver timing of the first terminal device, or carries an identifier of the transceiver timing of the first terminal device.
  • the second terminal device sends a device discovery message to the first terminal device.
  • the first terminal device receives the device discovery message from the second terminal device.
  • the second terminal device sends a device discovery message to the first terminal device through the PSSCH.
  • the second terminal device learns the sending direction of the device discovery message of the first terminal device according to the beam identifier in the device discovery message from the first terminal device.
  • the second terminal device learns the transceiver timing of the first terminal device according to the device discovery message from the first terminal device.
  • the second terminal device learns that the device discovery message is actively sent by the first terminal device to request discovery of the second terminal device.
  • the second terminal device sends a device discovery message to the first terminal device, and the device discovery message sent by the second terminal device carries the first connection identifier 1, which is used to indicate that the device discovery message is not a message actively sent by the second terminal device. It is a message sent by the second terminal device to the first terminal device after the second terminal device monitors the device discovery message from the first terminal device.
  • the device discovery message sent by the second terminal device carries the beam identifier.
  • the device discovery message sent by the second terminal device carries the identifier of the second terminal device.
  • the device discovery message sent by the second terminal device carries the transceiver timing of the second terminal device, or carries the identifier of the transceiver timing of the second terminal device.
  • the first terminal device sends a device discovery response to the second terminal device based on the first transceiver timing according to the device discovery message from the second terminal device.
  • the second terminal device receives the device discovery response from the first terminal device.
  • the device discovery response is used to instruct the first terminal device and the second terminal device to establish a communication connection.
  • the first terminal device sends a device discovery response to the second terminal device through the PSSCH.
  • the first terminal device learns according to the device discovery message from the second terminal device that carries the first connection identifier 1, that the second terminal device has listened to the device discovery message of the first terminal device, and the first terminal device A terminal device has monitored the device discovery message of the second terminal device. In this way, the first terminal device may feed back the device discovery response to the second terminal device to instruct the first terminal device and the second terminal device to establish a communication connection.
  • the device discovery message from the second terminal device carries the beam identifier 00, and the beam identifier 00 identifies the device discovery message forward, and the first terminal device learns that the second terminal device is located behind itself according to the beam identifier 00 .
  • the second terminal device first sends a device discovery message to the first terminal device, and within a period of time, the timing of the first terminal device and the second terminal device are synchronized, and the first terminal device uses the first terminal device.
  • the device discovery method provided in the embodiment of the present application may specifically include the following steps:
  • S501 The access network device sends resource configuration information to the first terminal device.
  • the first terminal device receives resource configuration information from the access network device.
  • the access network device sends resource configuration information to the second terminal device.
  • the second terminal device receives resource configuration information from the access network device.
  • the second terminal device sends a device discovery message to the first terminal device.
  • the first terminal device receives the device discovery message from the second terminal device.
  • the second terminal device sends a device discovery message to the first terminal device through the PSSCH.
  • the device discovery message sent by the second terminal device carries the first connection identifier 0, which is used to indicate that the device discovery message is a message actively sent by the second terminal device.
  • the device discovery message sent by the second terminal device carries the identifier of the second terminal device.
  • the device discovery message sent by the second terminal device carries the transceiver timing of the second terminal device or the transceiver timing identifier of the second terminal device.
  • the device discovery message sent by the second terminal device carries the beam identifier.
  • the first terminal device sends a device discovery response to the second terminal device based on the first transceiver time sequence according to the device discovery message from the second terminal device.
  • the second terminal device receives the device discovery response from the first terminal device.
  • the first terminal device sends a device discovery response to the second terminal device through the PSSCH.
  • the first terminal device learns the sending direction of the device discovery message according to the beam identifier in the device discovery message from the second terminal device.
  • the first terminal device learns that the device discovery message is actively sent by the second terminal device. In this way, the first terminal device sends a device discovery response to the second terminal device.
  • the device discovery response sent by the first terminal device carries the second connection identifier 1, which is used to indicate that the first terminal device has monitored the device from the second terminal device. Found news.
  • the device discovery response sent by the first terminal device carries the identifier of the first terminal device.
  • the device discovery response sent by the first terminal device carries the transceiver timing of the first terminal device or the transceiver timing identifier of the first terminal device.
  • the device discovery response sent by the first terminal device carries a beam identifier, which is used to indicate the sending direction of the device discovery response.
  • the second terminal device sends a device discovery response to the first terminal device.
  • the first terminal device receives the device discovery response from the second terminal device.
  • the device discovery response is used to instruct the first terminal device and the second terminal device to establish a communication connection.
  • the second terminal device sends a device discovery response to the first terminal device through the PSSCH.
  • the device discovery response sent by the second terminal device carries the identifier of the second terminal device.
  • the device discovery response sent by the second terminal device carries the transceiver timing of the second terminal device or the transceiver timing identifier of the second terminal device.
  • the device discovery response sent by the second terminal device carries a beam identifier, which is used to indicate the sending direction of the device discovery response.
  • the first terminal device first sends a device discovery message to the second terminal device, and within a period of time, the first terminal device uses the first transceiver timing to monitor, the first terminal device and the second terminal device
  • the device discovery method provided in the embodiment of the present application may specifically include the following steps:
  • the first terminal device sends a device discovery message to the second terminal device using the first transceiving sequence.
  • the second terminal device receives the device discovery message from the first terminal device.
  • the second terminal device sends a device discovery message to the first terminal device.
  • the first terminal device receives the device discovery message from the second terminal device.
  • the first terminal device sends a device discovery response to the second terminal device based on the first transceiver timing according to the device discovery message from the second terminal device.
  • the second terminal device receives the device discovery response from the first terminal device.
  • the device discovery response is used to instruct the first terminal device and the second terminal device to establish a communication connection.
  • the detailed procedures of S701 to S703 can be referred to the foregoing S503 to S505 respectively, which will not be repeated here.
  • the difference from the method in FIG. 5 is that in FIG. 7, the time-frequency resources that can be used by the first terminal device and the second terminal device are the time-frequency resources pre-configured in the terminal device.
  • the transmit and receive timing that can be used by the terminal device is a pre-configured transmit and receive timing.
  • a pre-configured sending and receiving sequence is used as the sending and receiving sequence of device discovery, and when the terminal device performs device discovery, the pre-configured sending and receiving sequence is used for monitoring.
  • the terminal device does not need to select one of multiple transceiver timings as the timing for monitoring through polling, which can reduce the power consumption of the terminal device.
  • the terminal device is pre-configured with the transceiving sequence 1 shown in Figure 3(a).
  • the terminal device does not need to select one of multiple receiving and sending timings through polling, but directly adopts the receiving and transmitting timing 1 for device discovery, which can reduce the power consumption of the terminal.
  • the terminal device can adjust the transceiver timing based on the transceiver timing 1. It can be seen that by pre-configuring a transmission and reception timing on the terminal device, the terminal device can subsequently adjust the transmission and reception timing based on the preconfigured transmission and reception timing, which can meet the subsequent device discovery requirements of the terminal device.
  • the terminal device can also pre-configure a transceiver timing.
  • the terminal device When the terminal device discovers the device, it directly uses the reverse timing of the pre-configured transceiver timing to monitor, which can also avoid selecting one of multiple transceiver timings as the timing for monitoring through polling. , Can reduce the power consumption of terminal equipment.
  • the embodiment of the present application does not limit the number of pre-configured transceiver timings in the terminal device.
  • the terminal device may also pre-configure two transceiver timings.
  • the second terminal device first sends a device discovery message to the first terminal device, and within a period of time, the first terminal device and the second terminal device are synchronized in time sequence, and the first terminal device uses the first terminal device.
  • the device discovery method provided in the embodiment of the present application may specifically include the following steps:
  • the second terminal device sends a device discovery message to the first terminal device.
  • the first terminal device receives the device discovery message from the second terminal device.
  • the device discovery message sent by the second terminal device carries the first connection identifier 0, which is used to indicate that the device discovery message is a message actively sent by the second terminal device.
  • the first terminal device sends a device discovery response to the second terminal device based on the first transceiver time sequence according to the device discovery message from the second terminal device.
  • the second terminal device receives the device discovery response from the first terminal device.
  • the device discovery response sent by the first terminal device carries the second connection identifier 1, which is used to indicate that the first terminal device has monitored the device discovery message from the second terminal device.
  • the second terminal device sends a device discovery response to the first terminal device.
  • the first terminal device receives the device discovery response from the second terminal device.
  • the device discovery response is used to instruct the first terminal device and the second terminal device to establish a communication connection.
  • the first terminal device first sends a device discovery message to the second terminal device, and within a period of time, the first terminal device uses the first transceiver timing to listen, the first terminal device and the second terminal device
  • the device discovery method provided in the embodiment of the present application may specifically include the following steps:
  • S501 The access network device sends resource configuration information to the first terminal device.
  • the first terminal device receives resource configuration information from the access network device.
  • the access network device sends resource configuration information to the second terminal device.
  • the second terminal device receives resource configuration information from the access network device.
  • the first terminal device sends a device discovery message to the second terminal device using the first transceiving sequence.
  • the first terminal device does not receive a device discovery message from the second terminal device within the first time period, and the first terminal device does not establish a connection with other terminal devices, and the first terminal device adjusts the timing of sending and receiving.
  • the first terminal device adopts any of the following transceiver timing monitoring in the second time period: transceiver timing 1, transceiver timing 2, silent monitoring timing, where transceiver timing 1 and transceiver timing 2In contrast, the silent monitoring sequence is used for the first terminal device to continuously monitor.
  • the first terminal device can set a timer, and the timing duration of the timer can be a first time period (for example, 2ms). If in the first time period, the timing of the first terminal device and the second terminal device is different. Synchronization, the first terminal device usually cannot receive the device discovery message from the second terminal device within the first time period. At this time, if the first terminal device does not establish a connection with other terminal devices at the time when the timer expires, In order to improve the success rate of establishing a communication connection between the first terminal device and the second terminal device, the transmission and reception timing of the first terminal device needs to be adjusted.
  • a first time period for example, 2ms
  • the first terminal device uses the transceiving sequence 1 in Figure 3(a) within the first time period. If the timer expires, that is, until the end of the first time period, the first terminal device still has not heard from the first time period. Second, when the device of the terminal device discovers the message, the first terminal device adjusts the sending and receiving sequence, that is, randomly selects the sending and receiving sequence 2 from the sending and receiving sequence shown in 3 in (a) of FIG. 3, and uses the sending and receiving sequence 2 to monitor.
  • the second terminal device sends a device discovery message to the first terminal device.
  • the first terminal device receives the device discovery message from the second terminal device.
  • the device discovery message sent by the second terminal device carries the first connection identifier 1, which is used to indicate that the device discovery message is not a message actively sent by the second terminal device, but the second terminal device listens to the message from the first terminal device. After the device discovers the message, the second terminal device sends a message to the first terminal device.
  • the second terminal device can usually successfully receive from the first terminal device.
  • a device discovery message of a terminal device (carrying the second connection identifier 0), so, the second terminal device sends a device discovery message (carrying the first connection identifier 1) to the first terminal device.
  • the first terminal device executes S904, that is, after adjusting the transmission and reception timing, if the device discovery message from the second terminal device is not received within a period of time, the first terminal device can continue to adjust the transmission and reception timing, such as from One of the 3 sending and receiving timings shown in (a) of FIG. 3 is randomly selected until the first terminal device can monitor the device discovery message from the second terminal device.
  • the first terminal device sends a device discovery response to the second terminal device based on the adjusted transmission and reception time sequence according to the device discovery message from the second terminal device.
  • the second terminal device receives the device discovery response from the first terminal device.
  • the device discovery response is used to instruct the first terminal device and the second terminal device to establish a communication connection.
  • the first terminal device uses the randomly selected transceiver sequence 2 to monitor in the second time period, that is, uses the transceiver sequence 2 to send the device to the second terminal device Found response.
  • the duration of the first time period and the second time period may be the same or different, and can be set flexibly according to application scenarios, which is not limited here.
  • there may be a time interval between the first time period and the second time period since there may be a certain time delay in adjusting the timing sequence of the first terminal device, there may be a time interval between the first time period and the second time period.
  • FIG. 9 only exemplarily shows the first time period and the second time period. There is no time interval between segments.
  • the second terminal device first sends a device discovery message to the first terminal device, and within a period of time, the timing of the first terminal device and the second terminal device are not synchronized, and the first terminal device uses the first terminal device.
  • the device discovery method provided in the embodiment of the present application may specifically include the following steps:
  • S501 The access network device sends resource configuration information to the first terminal device.
  • the first terminal device receives resource configuration information from the access network device.
  • the access network device sends resource configuration information to the second terminal device.
  • the second terminal device receives resource configuration information from the access network device.
  • the first terminal device monitors using the first transceiver timing.
  • the first terminal device does not monitor the device discovery message from the second terminal device within the first time period, and the first terminal device does not establish a connection with other terminal devices, and the first terminal device adjusts the timing of sending and receiving.
  • the second terminal device sends a device discovery message to the first terminal device.
  • the first terminal device receives the device discovery message from the second terminal device.
  • the device discovery message sent by the second terminal device carries the first connection identifier 0, which is used to indicate that the device discovery message is a message actively sent by the second terminal device.
  • the first terminal device sends a device discovery response to the second terminal device based on the adjusted transceiving sequence based on the device discovery message from the second terminal device.
  • the second terminal device receives the device discovery response from the first terminal device.
  • the device discovery response sent by the first terminal device carries the second connection identifier 1, which is used to indicate that the first terminal device has monitored the device discovery message from the second terminal device.
  • the second terminal device sends a device discovery response to the first terminal device.
  • the first terminal device receives the device discovery response from the second terminal device.
  • the device discovery response is used to instruct the first terminal device and the second terminal device to establish a communication connection.
  • the first terminal device first sends a device discovery message to the second terminal device, and in the first time period, the first terminal device uses the first transceiver timing to monitor, the first terminal device and the second terminal device As an example, the time sequence of the terminal device is not synchronized.
  • the device discovery method provided in the embodiment of the present application may specifically include the following steps:
  • the first terminal device sends a device discovery message to the second terminal device using the first transceiving sequence.
  • the second terminal device receives the device discovery message from the first terminal device.
  • the device discovery message sent by the first terminal device carries the second connection identifier 0, which is used to indicate that the message was actively sent by the first terminal device instead of being sent after listening to the device discovery message from the second terminal device.
  • the first terminal device does not monitor the device discovery message from the second terminal device in the first time period, and the first terminal device does not establish a connection with other terminal devices, and the first terminal device adjusts the timing of sending and receiving.
  • the second terminal device sends a device discovery message to the first terminal device.
  • the first terminal device receives the device discovery message from the second terminal device.
  • the device discovery message carries the first connection identifier 1, which is used to indicate that the second terminal device has monitored the device discovery message from the first terminal device.
  • the first terminal device sends a device discovery response to the second terminal device based on the adjusted transmission and reception timing based on the device discovery message from the second terminal device.
  • the second terminal device receives the device discovery response from the first terminal device.
  • the device discovery response is used to instruct the first terminal device and the second terminal device to establish a communication connection.
  • the detailed process of S701, S1101 to S1104 can refer to the related process of FIG. 9.
  • the difference from the method shown in FIG. 9 is that, in the method shown in FIG. 11, the time-frequency resources that can be used by the terminal device are pre-configured time-frequency resources, and the transceiving timing that the terminal device can use is the pre-configured transceiving timing.
  • the second terminal device first sends a device discovery message to the first terminal device, and in the first time period, the timing of the first terminal device and the second terminal device are not synchronized, the first terminal device
  • the device discovery method provided in the embodiment of the present application may specifically include the following steps:
  • the first terminal device monitors in the first time period by using the first transceiver timing.
  • the first terminal device does not receive a device discovery message from the second terminal device within the first time period, and the first terminal device does not establish a connection with other terminal devices, and the first terminal device adjusts the timing of sending and receiving.
  • the second terminal device sends a device discovery message to the first terminal device.
  • the first terminal device receives the device discovery message from the second terminal device.
  • the device discovery message sent by the second terminal device carries the first connection identifier 0, which is used to indicate that the device discovery message is a message actively sent by the second terminal device.
  • the first terminal device sends a device discovery response to the second terminal device based on the adjusted receiving and sending sequence based on the device discovery message from the second terminal device.
  • the second terminal device receives the device discovery response from the first terminal device.
  • the device discovery response sent by the first terminal device carries the second connection identifier 1, which is used to indicate that the first terminal device has monitored the device discovery message from the second terminal device.
  • the second terminal device sends a device discovery response to the first terminal device.
  • the first terminal device receives the device discovery response from the second terminal device.
  • the device discovery response is used to instruct the first terminal device and the second terminal device to establish a communication connection.
  • the time-frequency resources that can be used by the terminal device are pre-configured time-frequency resources
  • the transceiving timing that the terminal device can use is the pre-configured transceiving timing
  • FIGS. 9 to 12 only the first terminal device undergoes one time sequence adjustment for receiving and sending, and its receiving and sending sequence can be synchronized with the second terminal device as an example.
  • the first terminal device may also need to undergo multiple transmission and reception timing adjustments to be synchronized with the transmission and reception timing of the second terminal device.
  • the embodiment of the application does not limit the specific adjustment times of the transmission and reception timing of the first terminal device.
  • the first terminal device, the second terminal device, and the access network device include hardware structures and/or software modules corresponding to each function.
  • the embodiments of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Those skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the technical solutions of the embodiments of the present application.
  • the embodiment of the present application may divide the device discovery apparatus into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 13 shows a schematic block diagram of a device discovery apparatus provided in an embodiment of the present application.
  • the device discovery apparatus 1300 can exist in the form of software, can also be a device, and can also be used in a chip of a device.
  • the device 1300 includes a processing unit 1302 and a communication unit 1303.
  • the processing unit 1302 may be used to support the apparatus 1300 to perform S904 in FIG. 9, S1004 in FIG. 10, and/or for the functions described herein Other processes of the program.
  • the communication unit 1303 is used to support communication between the apparatus 1300 and other network elements (for example, the second terminal device).
  • the communication unit is used to support the device 1300 to perform S202 shown in FIG. 2, S503 shown in FIG. 5, and/or other processes used in the solution described herein.
  • the processing unit 1302 may be used to support the apparatus 1300 to adjust the transceiver timing when the transceiver timing is not synchronized with other terminal devices, and/or use Other processes in the scheme described in this article.
  • the communication unit 1303 is used to support communication between the apparatus 1300 and other network elements (for example, the first terminal device). For example, the communication unit is used to support the device 1300 to perform S202 shown in FIG. 2, S503 shown in FIG. 5, and/or other processes used in the solution described herein.
  • the processing unit 1302 may be used to support the apparatus 1300 to determine the available time-frequency resources and available transmission and reception timings of each terminal device, and/or used in this article Other processes of the described scheme.
  • the communication unit 1303 is used to support communication between the apparatus 1300 and other network elements (for example, the first terminal device). For example, the communication unit 1303 is used to support the apparatus 1300 to execute S501 and S502 shown in FIG. 5, and/or other processes used in the solution described herein.
  • the device discovery apparatus 1300 may further include a storage unit 1301 for storing the program code and data of the apparatus 1300, and the data may include but is not limited to raw data or intermediate data.
  • the processing unit 1302 may be a processor or a controller, for example, a CPU, a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the communication unit 1303 may be a communication interface, a transceiver, or a transceiver circuit, etc., where the communication interface is a general term.
  • the communication interface may include multiple interfaces, for example, the interface between the base station and the terminal and/ Or other interfaces.
  • the storage unit 1301 may be a memory.
  • the processing unit 1302 is a processor
  • the communication unit 1303 is a communication interface
  • the storage unit 1301 is a memory
  • the device discovery apparatus 1400 involved in the embodiment of the present application may be as shown in FIG. 14.
  • the device 1400 includes: a processor 1402, a communication interface 1403, and a memory 1401.
  • the apparatus 1400 may further include a bus 1404.
  • the communication interface 1403, the processor 1402, and the memory 1401 can be connected to each other through a bus 1404;
  • the bus 1404 can be a Peripheral Component Interconnect (PCI) bus or an extended industry standard architecture (Extended Industry Standard Architecture, abbreviated as PCI). EISA) bus, etc.
  • the bus 1404 can be divided into an address bus, a data bus, a control bus, and so on. For ease of representation, only one thick line is used in FIG. 14, but it does not mean that there is only one bus or one type of bus.
  • a person of ordinary skill in the art can understand that: in the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (for example, coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (for example, a solid state disk (Solid State Disk, SSD)) )Wait.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a digital video disc (Digital Video Disc, DVD)
  • a semiconductor medium for example, a solid state disk (Solid State Disk, SSD)
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network devices (for example, Terminal). Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each functional unit may exist independently, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

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Abstract

本申请提供一种设备发现方法、装置及系统,涉及通信技术领域,能够贴近未来终端的通信需求。该方法包括:第一终端设备在第一时间段内采用第一收发时序监听;若第一终端设备在第一时间段内接收到来自第二终端设备的设备发现消息,第一终端设备根据设备发现消息,基于第一收发时序,向第二终端设备发送设备发现响应;若第一终端设备在第一时间段内没有接收到来自第二终端设备的设备发现消息,且第一终端设备没有和其他终端设备建立连接,第一终端设备在第一时间段结束后,在第二时间段内采用如下任一种收发时序监听:第一收发时序、第二收发时序、静默监听时序,其中第二收发时序与第一收发时序相反,静默监听时序用于第一终端设备持续监听。

Description

设备发现方法、装置及系统 技术领域
本申请涉及通信技术领域,尤其涉及设备发现方法、装置及系统。
背景技术
在车对外界的信息交换(vehicle to everything,V2X)场景中,终端设备之间可通过侧行链路(sidelink,SL)直接通信。其中,终端设备可以通过设备发现流程发现其他终端设备,进而与其他设备建立通信连接,进行信息交互。
目前,在长期演进(long term evolution,LTE)系统中,终端设备使用物理侧行链路发现信道(physical sidelink discovery channel,PSDCH)进行设备发现。即终端设备使用PSDCH发送设备发现消息,以发现其他终端设备。但是,随着第五代(5th-generation,5G)通信系统的研究不断推进,5G系统中的终端设备数量更多,5G系统中的业务类型更多,5G系统所提供的服务也更趋于多样化。因此,目前用于LTE中的设备发现方式并不完全适用于5G系统,亟待提出一种新的设备发现方法,以贴近未来终端设备的通信需求。
发明内容
本申请实施例提供一种设备发现方法、装置及系统,能够贴近未来终端设备的通信需求。
为达到上述目的,本申请实施例采用如下技术方案:第一方面,本申请实施例提供一种设备发现方法,该方法应用于终端设备,或终端设备中的芯片系统,该方法包括:第一终端设备在第一时间段内采用第一收发时序监听。若第一终端设备在第一时间段内接收到来自第二终端设备的设备发现消息,第一终端设备根据设备发现消息,基于第一收发时序,向第二终端设备发送设备发现响应;若第一终端设备在第一时间段内没有接收到来自第二终端设备的设备发现消息,且,第一终端设备没有和其他终端设备建立连接,第一终端设备在第一时间段结束后,在第二时间段内采用如下任一种收发时序监听:第一收发时序、第二收发时序、静默监听时序,其中第二收发时序与第一收发时序相反,静默监听时序用于第一终端设备持续监听。
其中,第一收发时序的收发时机与第二收发时序的收发时机相反。第一收发时序的发送波束时刻为第二收发时序的接收波束时刻,第一收发时序的接收波束时刻为第二收发时序的发送波束时刻。
如此,当第一终端设备能够监听到来自第二终端设备的设备发现消息时,说明第一终端设备和第二终端设备的时序同步,无需调整第一终端设备和第二终端设备的收发时序,第一终端设备可以继续使用第一收发时序向第二终端设备发送设备发现响应。当第一终端设备在第一时间段未监听到来自第二终端设备的设备发现消息,且第一终端设备未与其他终端设备连接,说明第一终端设备的收发时序不适用当前的通信需求,第一终端设备可从多种可用收发时序中随机选取一种收发时序进行监听,提升监听的成功率,进而提升设备发现的成功率,贴近未来终端设备的通信需求。
在一种可能的设计中,第一终端设备根据设备发现消息,基于第一收发时序,向第二终端设备发送设备发现响应,可以具体实现为:第一终端设备根据波束标识,确定设备发现消息的发送方向,并基于第一收发时序,以及发送方向向第二终端设备发送设备发现响应。
在一种可能的设计中,方法还包括:第一终端设备从接入网设备接收资源配置信息,资源配置信息 用于指示第一终端设备可使用的时频资源和/或指示第一终端设备可使用的收发时序。
在一种可能的设计中,方法还包括:第一终端设备向接入网设备发送资源请求,资源请求用于请求第一终端设备可使用的时频资源和/或请求第一终端设备可使用的收发时序。
在一种可能的设计中,第一终端设备监听,具体可以实现为:第一终端设备通过物理侧行链路共享信道PSSCH监听。
在一种可能的设计中,第一终端设备向第二终端设备发送设备发现响应,具体可以实现为:第一终端设备通过PSSCH向第二终端设备发送设备发现响应。
也就是说,本申请中,终端设备通过PSSCH进行设备发现。如此,相比于现有技术中为进行设备发现的终端设备单独分配专有的PSDCH,当终端设备数目较多时,信道开销较大,本申请实施例中终端设备通过PSSCH进行设备发现,无需分配专用信道,降低信道开销。
第二方面,本申请提供一种设备发现方法,该方法应用于第二终端设备,或第二终端设备的芯片系统,该方法包括:第二终端设备向第一终端设备发送设备发现消息,并从第一终端设备接收设备发现响应。设备发现消息包括第一连接标识,和/或波束标识,和/或终端标识,和/或第二终端设备的收发时序的标识。
在一种可能的设计中,方法还包括:第二终端设备从接入网设备接收资源配置信息,资源配置信息用于指示第二终端设备可使用的时频资源和/或指示第二终端设备可使用的收发时序。
在一种可能的设计中,方法还包括:第二终端设备向接入网设备发送资源请求,资源请求用于请求第二终端设备可使用的时频资源和/或请求第二终端设备可使用的收发时序。
在一种可能的设计中,第二终端设备向第一终端设备发送设备发现消息,具体可以实现为:第二终端设备通过物理侧行链路共享信道PSSCH向第一终端设备发送设备发现消息。
在一种可能的设计中,第二终端设备从第一终端设备接收设备发现响应,具体可以实现为:第二终端设备通过PSSCH从第一终端设备接收设备发现响应。
第三方面,本申请提供一种设备发现方法,该方法应用于接入网设备,或接入网设备的芯片系统,该方法包括:接入网设备从第一终端设备或第二终端设备接收资源请求,发送资源配置信息。
资源请求用于请求第一终端设备或第二终端设备可使用的时频资源,和/或请求第一终端设备或第二终端设备可使用的收发时序;资源配置信息用于指示第一终端设备或第二终端设备可使用的时频资源,和/或指示第一终端设备或第二终端设备可使用的收发时序。
在一种可能的设计中,方法还包括:接入网设备从第一终端设备或第二终端设备接收资源请求,资源请求用于请求第一终端设备或第二终端设备可使用的时频资源,和/或请求第一终端设备或第二终端设备可使用的收发时序。
第四方面,本申请提供一种设备发现方法,应用于第一终端设备,或第一终端设备的芯片系统,该方法包括:第一终端接收来自第二终端的第一设备发现消息,第一设备发现消息用于指示第二终端所使用的收发时序;第一终端根据第一设备发现消息,在第二终端的接收时序发送设备发现响应。
在一种可能的设计中,方法还包括:在预设时段内,第一终端在第一时序未监听到第一设备发现消息,则第一终端将收发时序由第一时序切换至第二时序,第一时序包括配置时序,或配置时序相反的时序,或静默时序,第二时序包括配置时序,或配置时序相反的时序,或静默时序,与配置时序相反的时序中的接收时序为配置时序中的发送时序,与配置时序相反的时序中的发送时序为配置时序中的接收时序,在静默时序,第一终端能够监听来自其他终端的第三设备发现消息。
在一种可能的设计中,方法还包括:第一终端根据第一设备发现消息,在第二终端的接收时序发送 设备发现响应,具体可以实现为:第一终端根据波束标识,确定设备发现响应的第二发送方向,第二发送方向与第一发送方向相反;第一终端在第二终端的接收时序、以第二发送方向向第二终端发送设备发现响应。
在一种可能的设计中,方法还包括:第一终端向接入网设备发送资源请求,资源请求用于请求第一终端所使用的时频资源。
在一种可能的设计中,第一终端从接入网设备接收资源配置消息,资源配置消息用于配置第一终端所使用的时频资源以及配置第一终端所使用的收发时序。
在一种可能的设计中,第一终端接收来自第二终端的第一设备发现消息,具体可以实现为:第一终端通过物理侧行链路共享信道PSSCH接收第一设备发现消息。
第五方面,本申请提供一种设备发现方法,应用于第一终端设备,或第一终端设备的芯片系统,该方法包括:第二终端向第一终端发送第一设备发现消息,第一设备发现消息用于指示第二终端所使用的收发时序;第二终端在第二终端的接收时序从第一终端接收设备发现响应。
在一种可能的设计中,第二终端向第一终端发送第一设备发现消息,具体可以实现为:第二终端通过PSSCH向第一终端发送第一设备发现消息。
在一种可能的设计中,第二终端在第二终端的接收时序从第一终端接收设备发现响应,具体可以实现为:第二终端在第二终端的接收时序,通过PSSCH从第一终端接收设备发现响应。
第六方面,本申请提供一种设备发现方法,该方法应用于接入网设备,或接入网设备的芯片系统。该方法包括:接入网设备发送资源配置消息,资源配置消息用于配置第一终端所使用的时频资源以及配置第一终端所使用的收发时序。
在第四至第六方面任一方面的一种可能的设计中,方法还包括:接入网设备从第一终端设备接收资源请求,资源请求用于请求第一终端所使用的时频资源。
在第四至第六方面任一方面的一种可能的设计中,第一设备发现消息还包括波束标识,波束标识用于指示第一设备发现消息的第一发送方向。
在第四至第六方面任一方面的一种可能的设计中,设备发现响应还包括用于指示第二发送方向的波束标识、第一终端的标识、第一终端的收发时序中的至少一项。
在第四至第六方面任一方面的一种可能的设计中,时频资源包括毫米波段的频域资源。
第七方面,本申请提供一种设备发现方法,应用于设备发现系统,系统包括上述第一方面任一设计中的第一终端设备和上述第二方面任一设计中的第二终端设备,或者,系统包括上述第四方面任一设计中的第一终端设备和上述第五方面任一设计中的第二终端设备和接入网设备。或者,系统包括上述第一方面任一设计中的第一终端设备和上述第二方面任一设计中的第二终端设备和上述第三方面任一设计中的接入网设备,或者,系统包括上述第四方面任一设计中的第一终端设备和上述第五方面任一设计中的第二终端设备和上述第六方面任一设计中的接入网设备。方法包括:第一终端设备在第一时间段内采用第一收发时序监听。
第二终端设备向第一终端设备发送设备发现消息。
若第一终端设备在第一时间段内接收到来自第二终端设备的设备发现消息,第一终端设备根据设备发现消息,基于第一收发时序,向第二终端设备发送设备发现响应。
若第一终端设备在第一时间段内没有接收到来自第二终端设备的设备发现消息,且,第一终端设备没有和其他终端设备建立连接,第一终端设备在第一时间段结束后,在第二时间段内采用如下任一种收发时序监听:第一收发时序、第二收发时序、静默监听时序,其中第二收发时序与第一收发时序相反, 静默监听时序用于第一终端设备持续监听。
在一种可能的设计中,设备发现消息包括第一连接标识,和/或波束标识,和/或终端标识,和/或第二终端设备的收发时序的标识,波束标识用于指示设备发现消息的发送方向。
在一种可能的设计中,第一连接标识用于指示设备发现消息为第二终端设备监听到来自第一终端设备的设备发现消息后,向第一终端设备发送的消息;设备发现响应用于指示第一终端设备和第二终端设备之间建立连接。
在一种可能的设计中,第一连接标识用于指示设备发现消息不是第二终端设备监听到来自第一终端设备的设备发现消息后,向第一终端设备发送的消息;设备发现响应包括第二连接标识,第二连接标识用于指示第一终端设备监听到来自第二终端设备的设备发现消息。
在一种可能的设计中,第一终端设备根据设备发现消息,基于第一收发时序,向第二终端设备发送设备发现响应,包括:第一终端设备根据波束标识,确定设备发现消息的发送方向,第一终端设备基于第一收发时序,以及发送方向向第二终端设备发送设备发现响应。
在一种可能的设计中,收发时序用于指示发送波束和/或接收波束的规则、以及指示发送波束的方向和/或接收波束的方向。
在一种可能的设计中,方法还包括:接入网设备向第一终端设备发送资源配置信息,资源配置信息用于指示第一终端设备可使用的时频资源和/或指示第一终端设备可使用的收发时序;
第一终端设备从接入网设备接收资源配置信息。
在一种可能的设计中,方法还包括:第一终端设备向接入网设备发送资源请求,资源请求用于请求第一终端设备可使用的时频资源,和/或请求第一终端设备可使用的收发时序。
在一种可能的设计中,第一终端设备可使用的时频资源为预配置资源,第一终端设备可使用的收发时序为预配置时序,预配置时序包括第一收发时序、第二收发时序、静默监听时序。
在一种可能的设计中,第一终端设备监听,包括:第一终端设备通过物理侧行链路共享信道PSSCH监听。
在一种可能的设计中,第一终端设备向第二终端设备发送设备发现响应,包括:第一终端设备通过PSSCH向第二终端设备发送设备发现响应。
在一种可能的设计中,时频资源包括毫米波段的频域资源。
第八方面,本申请实施例提供一种设备发现装置,该装置能够实现第一终端设备的功能,比如,可以为第一终端设备,或第一终端设备内置的组件,比如第一终端设备中的芯片系统,该装置包括:控制单元,用于控制通信单元在第一时间段内采用第一收发时序监听。还用于若第一终端设备在第一时间段内接收到来自第二终端设备的设备发现消息,第一终端设备根据设备发现消息,基于第一收发时序,控制通信单元向第二终端设备发送设备发现响应。还用于若第一终端设备在第一时间段内没有接收到来自第二终端设备的设备发现消息,且,第一终端设备没有和其他终端设备建立连接,第一终端设备在第一时间段结束后,在第二时间段内,控制通信单元采用如下任一种收发时序监听:第一收发时序、第二收发时序、静默监听时序,其中第二收发时序与第一收发时序相反,静默监听时序用于第一终端设备持续监听。
在一种可能的设计中,控制单元,用于根据设备发现消息,基于第一收发时序,控制通信单元向第二终端设备发送设备发现响应,可以具体实现为:用于根据波束标识,确定设备发现消息的发送方向,并基于第一收发时序,控制通信单元在发送方向向第二终端设备发送设备发现响应。
在一种可能的设计中,通信单元,用于从接入网设备接收资源配置信息,资源配置信息用于指示第 一终端设备可使用的时频资源和/或指示第一终端设备可使用的收发时序。
在一种可能的设计中,通信单元,用于向接入网设备发送资源请求,资源请求用于请求第一终端设备可使用的时频资源和/或请求第一终端设备可使用的收发时序。
在一种可能的设计中,通信单元用于监听,具体可以实现为:用于通过物理侧行链路共享信道PSSCH监听。
在一种可能的设计中,通信单元向第二终端设备发送设备发现响应,具体可以实现为:通过PSSCH向第二终端设备发送设备发现响应。
第九方面,本申请提供一种设备发现装置,该装置能够实现上述各方面中第二终端设备的功能。该装置包括:通信单元,用于向第一终端设备发送设备发现消息,并从第一终端设备接收设备发现响应。设备发现消息包括第一连接标识,和/或波束标识,和/或终端标识,和/或第二终端设备的收发时序的标识。
在一种可能的设计中,通信单元,还用于从接入网设备接收资源配置信息,资源配置信息用于指示第二终端设备可使用的时频资源和/或指示第二终端设备可使用的收发时序。
在一种可能的设计中,通信单元,还用于向接入网设备发送资源请求,资源请求用于请求第二终端设备可使用的时频资源和/或请求第二终端设备可使用的收发时序。
在一种可能的设计中,通信单元,用于向第一终端设备发送设备发现消息,具体可以实现为:通过物理侧行链路共享信道PSSCH向第一终端设备发送设备发现消息。
在一种可能的设计中,通信单元,用于从第一终端设备接收设备发现响应,具体可以实现为:通过PSSCH从第一终端设备接收设备发现响应。
第十方面,本申请提供一种设备发现装置,该装置能够实现上述任一方面中接入网设备的功能。该装置包括:通信单元,用于从第一终端设备或第二终端设备接收资源请求,还用于发送资源配置信息。
资源请求用于请求第一终端设备或第二终端设备可使用的时频资源,和/或请求第一终端设备或第二终端设备可使用的收发时序;资源配置信息用于指示第一终端设备或第二终端设备可使用的时频资源,和/或指示第一终端设备或第二终端设备可使用的收发时序。
在一种可能的设计中,通信单元,还用于从第一终端设备或第二终端设备接收资源请求,资源请求用于请求第一终端设备或第二终端设备可使用的时频资源,和/或请求第一终端设备或第二终端设备可使用的收发时序。
第十一方面,本申请实施例提供一种设备发现装置,该装置能够实现第一终端设备的功能,比如,可以为第一终端设备,或第一终端设备内置的组件,比如第一终端设备中的芯片系统,该装置包括:控制器,用于控制通信接口在第一时间段内采用第一收发时序监听。还用于若第一终端设备在第一时间段内接收到来自第二终端设备的设备发现消息,第一终端设备根据设备发现消息,基于第一收发时序,控制通信接口向第二终端设备发送设备发现响应。还用于若第一终端设备在第一时间段内没有接收到来自第二终端设备的设备发现消息,且,第一终端设备没有和其他终端设备建立连接,第一终端设备在第一时间段结束后,在第二时间段内,控制通信接口采用如下任一种收发时序监听:第一收发时序、第二收发时序、静默监听时序,其中第二收发时序与第一收发时序相反,静默监听时序用于第一终端设备持续监听。
在一种可能的设计中,控制器,用于根据设备发现消息,基于第一收发时序,控制通信接口向第二终端设备发送设备发现响应,可以具体实现为:用于根据波束标识,确定设备发现消息的发送方向,并基于第一收发时序,控制通信接口在发送方向向第二终端设备发送设备发现响应。
在一种可能的设计中,通信接口,用于从接入网设备接收资源配置信息,资源配置信息用于指示第一终端设备可使用的时频资源和/或指示第一终端设备可使用的收发时序。
在一种可能的设计中,通信接口,用于向接入网设备发送资源请求,资源请求用于请求第一终端设备可使用的时频资源和/或请求第一终端设备可使用的收发时序。
在一种可能的设计中,通信接口用于监听,具体可以实现为:用于通过物理侧行链路共享信道PSSCH监听。
在一种可能的设计中,通信接口向第二终端设备发送设备发现响应,具体可以实现为:通过PSSCH向第二终端设备发送设备发现响应。
第十二方面,本申请提供一种设备发现装置,该装置能够实现上述各方面中第二终端设备的功能。该装置包括:通信接口,用于向第一终端设备发送设备发现消息,并从第一终端设备接收设备发现响应。设备发现消息包括第一连接标识,和/或波束标识,和/或终端标识,和/或第二终端设备的收发时序的标识。
在一种可能的设计中,通信接口,还用于从接入网设备接收资源配置信息,资源配置信息用于指示第二终端设备可使用的时频资源和/或指示第二终端设备可使用的收发时序。
在一种可能的设计中,通信接口,还用于向接入网设备发送资源请求,资源请求用于请求第二终端设备可使用的时频资源和/或请求第二终端设备可使用的收发时序。
在一种可能的设计中,通信接口,用于向第一终端设备发送设备发现消息,具体可以实现为:通过物理侧行链路共享信道PSSCH向第一终端设备发送设备发现消息。
在一种可能的设计中,通信接口,用于从第一终端设备接收设备发现响应,具体可以实现为:通过PSSCH从第一终端设备接收设备发现响应。
第十三方面,本申请提供一种设备发现装置,该装置能够实现上述任一方面中接入网设备的功能。该装置包括:通信接口,用于发送资源配置信息。资源配置信息用于指示第一终端设备或第二终端设备可使用的时频资源,和/或指示第一终端设备或第二终端设备可使用的收发时序。
在一种可能的设计中,通信接口,还用于从第一终端设备或第二终端设备接收资源请求,资源请求用于请求第一终端设备或第二终端设备可使用的时频资源,和/或请求第一终端设备或第二终端设备可使用的收发时序。
在上述第一至第三、第七至第十三方面任一方面的一种可能的设计中,设备发现消息包括第一连接标识,和/或波束标识,和/或终端标识,和/或第二终端设备的收发时序的标识;其中,波束标识用于指示设备发现消息的发送方向。
在上述第一至第三、第七至第十三方面任一方面的一种可能的设计中,第一连接标识用于指示设备发现消息为第二终端设备监听到来自第一终端设备的设备发现消息后,向第一终端设备发送的消息;设备发现响应用于指示第一终端设备和第二终端设备之间建立连接。
在上述第一至第三、第七至第十三方面任一方面的一种可能的设计中,第一连接标识用于指示设备发现消息不是第二终端设备监听到来自第一终端设备的设备发现消息后,向第一终端设备发送的消息;设备发现响应包括第二连接标识,第二连接标识用于指示第一终端设备监听到来自第二终端设备的设备发现消息。
在上述第一至第三、第七至第十三方面任一方面的一种可能的设计中,收发时序用于指示发送波束和/或接收波束的规则、以及指示发送波束的方向和/或接收波束的方向。
在上述第一至第三、第七至第十三方面任一方面的一种可能的设计中,第一终端设备可使用的时频 资源为预配置资源,第一终端设备可使用的收发时序为预配置时序,预配置时序包括第一收发时序、第二收发时序、静默监听时序。
预配置一种收发时序作为设备发现的收发时序,当终端设备进行设备发现时,使用预配置的这种收发时序监听。如此,终端设备无需通过轮询从多个收发时序选取一种作为用于监听的时序,可以降低终端设备的功耗。
在上述第一至第三、第七至第十三方面任一方面的一种可能的设计中,时频资源包括毫米波段的频域资源。也就是说,使用上述方法,可以通过毫米波波束来传输设备发现消息、设备发现响应等。一方面,由于毫米波波束可定向发射,所以,设备发现消息、设备发现响应等与方向相关。接收方可以通过接收的毫米波波束获知该毫米波波束的发送方向,以获知发送方与接收方的位置关系,比如,接收方位于发送方的前或后或左或右。另一方面,相比于LTE中全向收发波束,本申请实施例中,对不同波束的方向可以加以区分,使得不同方向波束在空间上被隔离,相互之间不形成干扰。
第十四方面,本申请提供一种设备发现装置,用于实现上述第八或第十一方面中第一终端设备的功能,或用于实现上述第九或第十二方面中第二终端设备的功能,或用于实现上述第十或第十三方面中接入网设备的功能。
第十五方面,本申请提供一种设备发现装置,该装置具有实现上述第一或第二或第三或第四或第五或第六方面等前述各个方面中任一项的设备发现方法的功能。该功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块,所述模块可以包括通信单元、控制单元、处理单元、存储单元等。
第十六方面,提供一种设备发现装置,包括:处理器和存储器;该存储器用于存储计算机执行指令,当该设备发现装置运行时,该处理器执行该存储器存储的该计算机执行指令,以使该设备发现装置执行如上述第一或第二或第三或第四或第五或第六方面中任一项的设备发现方法。
第十七方面,提供一种设备发现装置,包括:处理器;处理器用于与存储器耦合,并读取存储器中的指令之后,根据指令执行如上述第一至第六方面任一方面中任一项的设备发现方法。
第十八方面,本申请实施例提供了一种设备发现装置,该装置可以为芯片系统,该芯片系统包括处理器,还可以包括存储器,用于实现上述任一方面所描述方法的功能。该芯片系统可以由芯片构成,也可以包含芯片和其他分立器件。
第十九方面,提供一种设备发现装置,该装置可以为电路系统,电路系统包括处理电路或芯片,处理电路被配置为执行如上述任一方面中任一项的设备发现方法。
第二十方面,本申请实施例中还提供一种计算机可读存储介质,包括指令,当其在计算机上运行时,使得计算机执行上述任一方面的方法。
第二十一方面,本申请实施例中还提供一种计算机程序产品,包括指令,当其在计算机上运行时,使得计算机执行上述任一方面的方法。
第二十二方面,本申请实施例提供了一种系统,系统包括第八方面的第一终端设备和第九方面的第二终端设备,或者系统包括第八方面的第一终端设备、第九方面的第二终端设备和第十方面的接入网设备,或者,系统包括第十一方面的第一终端设备和第十二方面的第二终端设备,或者系统包括第十一方面的第一终端设备、第十二方面的第二终端设备和第十三方面的接入网设备。
附图说明
图1为本申请实施例提供的通信系统的架构示意图;
图2为本申请实施例提供的设备发现方法的流程示意图;
图3为本申请实施例提供的收发时序的示意图;
图4为本申请实施例提供的收发时序的示意图;
图5为本申请实施例提供的设备发现方法的流程示意图;
图6为本申请实施例提供的设备发现方法的流程示意图;
图7为本申请实施例提供的设备发现方法的流程示意图;
图8为本申请实施例提供的设备发现方法的流程示意图;
图9为本申请实施例提供的设备发现方法的流程示意图;
图10为本申请实施例提供的设备发现方法的流程示意图;
图11为本申请实施例提供的设备发现方法的流程示意图;
图12为本申请实施例提供的设备发现方法的流程示意图;
图13为本申请实施例提供的设备发现装置的结构示意图;
图14为本申请实施例提供的设备发现装置的结构示意图。
具体实施方式
本申请的说明书以及附图中的术语“第一”和“第二”等是用于区别不同的对象,或者用于区别对同一对象的不同处理,而不是用于描述对象的特定顺序。此外,本申请的描述中所提到的术语“包括”和“具有”以及它们的任何变形,意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元,而是可选地还包括其他没有列出的步骤或单元,或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。需要说明的是,本申请实施例中,“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言,使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
此外,本申请实施例中,“至少一个”通常是指一个或者多个。“多个”通常是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B的情况,其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。
参见图1,为本申请实施例所涉及的通信系统,该通信系统包括第一终端设备、第二终端设备和接入网设备。其中,上述终端设备,如第一终端设备或第二终端设备,可以通过空口连接到接入网设备,以便接收网络服务。上述接入网设备主要用于实现无线物理层功能、资源调度和无线资源管理、无线接入控制以及移动性管理功能。
此外,上述第一终端设备和第二终端设备也可以通过SL直接进行通信,如进行V2X通信。容易理解的是,上述通过SL直接通信所使用的资源池,可以是接入网设备配置的资源池,如第一终端设备和第二终端设备与接入网设备的空口连接正常时所使用的资源池,也可以是第一终端设备和第二终端设备中预配置的资源池,如设备厂商在终端设备出厂前根据协议规定事先配置在终端设备中的资源池。
示例性的,上述第一终端设备和第二终端设备通过SL直接通信,可以是汽车到汽车(vehicle to vehicle,V2V)通信、汽车到基础设施(vehicle to infrastructure,V2I)通信、汽车到网络(vehicle to network,V2N)通信、汽车到行人(vehicle to pedestrian,V2P)通信等,也可以是终端设备之间其他形式的直接通信,如行人到行人(pedestrian to pedestrian,P2P)通信。
此外,除SL外,终端设备之间的直接通信也可以采用其他形式或其他名称的无线连接,如未来的无线通信系统,6G系统等,本申请对此不作限定。
其中,上述接入网设备可以指具有无线收发功能的接入网设备,也可以指设置于该接入网设备中的芯片系统,或其他形态。该接入网设备包括但不限于:Wi-Fi系统中的接入点(access point,AP),如家用无线路由器、无线中继节点、无线回传节点、传输点(transmission and reception point,TRP或者transmission point,TP),eNB、无线网络控制器(radio network controller,RNC)、节点B(node B,NB)、基站控制器(base station controller,BSC)、基站收发台(base transceiver station,BTS)、家庭基站(例如,home evolved nodeB,或home node B,HNB)、基带单元(baseband unit,BBU),还可以为5G系统,如NR中的gNB,或,传输点(TRP或TP),5G系统中的基站的一个或一组(包括多个天线面板)天线面板,或者,还可以为构成gNB或传输点的网络节点,如基带单元(BBU),或,分布式单元(distributed unit,DU)等。
在一些部署中,gNB可以包括集中式单元(centralized unit,CU)和分布式单元(distributed unit,DU)。gNB还可以包括射频单元(radio unit,RU)。CU实现gNB的部分功能,DU实现gNB的部分功能。比如,CU实现无线资源控制(radio resource control,RRC),分组数据汇聚层协议(packet data convergence protocol,PDCP)层和服务发现应用规范(service discovery application profile,SDAP)层的功能,DU实现无线链路控制(radio link control,RLC)、媒体接入控制(media access control,MAC)和物理(physical,PHY)层的功能。由于RRC层的信息最终会变成PHY层的信息,或者,由PHY层的信息转变而来,因而,在这种架构下,高层信令,如RRC层信令或PHCP层信令,也可以认为是由DU发送的,或者,由DU+RU发送的。可以理解的是,网络设备可以为CU节点、或DU节点、或包括CU节点和DU节点的设备。此外,CU可以划分为接入网(radio access network,RAN)中的网络设备,也可以将CU划分为核心网(core network,CN)中的网络设备,在此不做限制。
上述终端设备可以为具有无线收发功能的用户设备或设置于该用户设备中的芯片系统。示例性的,上述终端设备也可以称为站点(station,STA)、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、无线通信设备、用户代理或用户装置。上述终端设备包括但不限于: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、无人驾驶(self driving)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、传感器类设备,如监控终端等。
应理解,图1仅为便于理解而示例的简化示意图,仅示出了终端设备和接入网设备(比如基站)。在本申请实施例中,该无线通信系统中还可以包括其他网络设备或者还可以包括其他终端设备,图1中未予以画出。
以下结合图1所示的通信系统,说明本申请实施例提供的设备发现方法。下文主要以接入网设备为基站为例进行说明,在此统一声明,下文不再赘述。
参见图2,本申请实施例提供的设备发现(discovery)方法包括如下步骤:
S201、第一终端设备在第一时间段内采用第一收发时序监听。
在本申请实施例中,终端设备监听,具体指终端设备通过PSSCH监听。终端设备发送设备发现消息,具体指终端设备通过PSSCH发送设备发现消息。终端设备发送设备发现响应,具体指终端设备通过PSSCH发送设备发现响应。如此,相比于现有技术中为进行设备发现的终端设备单独分配专有的PSDCH,当终端设备数目较多时,信道开销较大,本申请实施例中终端设备通过PSSCH进行设备发现,无需分配专用信道,降低信道开销。
其中,第一终端设备进行设备发现时使用的时频资源可以是预配置的时频资源,也可以是由接入网设备下发给第一终端设备的,本申请实施例对此不进行限制。此外,本申请实施例中提及的时频资源通常指用于设备发现的时频资源,在此统一说明。
第一收发时序可以为第一终端设备出厂时由厂商预配置的收发时序,也可以由接入网设备通知第一终端设备,并向第一终端设备指示第一收发时序。
作为一种可能的实现方式,第一终端设备使用物理侧行链路共享信道(physical sidelink shared channel,PSSCH)监听。
示例性的,参见图3中(a),第一收发时序可以是收发时序1、收发时序2和静默监听时序中的任一种。其中,收发时序1与收发时序2相反。即收发时序1中的发送时刻为收发时序2中的接收时刻,收发时序1中的接收时刻为收发时序2中的发送时刻。静默监听时序用于第一终端设备持续监听,也就是说,当第一终端设备使用静默监听时序时,第一终端设备能够监听其他终端设备。
需要说明的是,静默监听时序仅为示例性的名称,还可以为其他名称,本申请实施例对此不进行限制。
在本申请实施例中,收发时序包括接收或发送波束的规则,比如在哪一时隙或子帧发送或接收波束,以及包括接收或发送波束的方向。以图3中(a)为例,黑色方块表示发送波束,白色方块表示接收波束。在本申请实施例中,波束通常指的是毫米波波束,终端设备通过收发毫米波波束来传输设备发现消息、设备发现响应等,在此统一声明。图3中(a),数字“1”、“2”、“3”、“4”表示毫米波波束的方向。
在本申请实施例中,可以通过毫米波波束来传输设备发现消息、设备发现响应等。一方面,由于毫米波波束可定向发射,所以,设备发现消息、设备发现响应等与方向相关。接收方可以通过接收的毫米波波束获知该毫米波波束的发送方向,以获知发送方与接收方的位置关系,比如,接收方位于发送方的前或后或左或右。另一方面,相比于LTE中全向收发波束,本申请实施例中,对不同波束的方向可以加以区分,使得不同方向波束在空间上被隔离,相互之间不形成干扰。
以设备发现的时频资源为3#子帧~10#子帧为例,图3中(a)的收发时序1表示,在3#子帧上,向前方(示例性的,以车辆行进方向为前方,但并不局限于此)的终端设备发送波束(对应收发时序1的黑色方块1)、在4#子帧上,向后方的终端设备发送波束(对应收发时序1的黑色方块2)、在5#子帧上,向左方的终端设备发送波束(对应收发时序1的黑色方块3)、在6#子帧上,向右方的终端设备发送波束(对应收发时序1的黑色方块4)、在7#子帧上,从前方的终端设备接收波束(对应收发时序1的白色方块2)、在8#子帧上,从后方的终端设备接收波束(对应收发时序1的白色方块1)、在9#子帧上,从左方的终端设备接收波束(对应收发时序1的白色方块3)、在10#子帧上,从右方的终端设备接收波束(对应收发时序1的白色方块4)。
为了便于理解,如下结合具体应用场景来说明收发时序1。具体的,结合图3中(a),并参见图4,在图4中,以车辆A中的手机为第一终端设备为例,当有通信需求时,第一终端设备可以向一个或多个方向发送波束,或从一个或多个方向接收来自其他终端设备的波束。图4中示出了第一终端设备向4个方向发送波束,且从4个方向接收波束的情况。其中,在发送波束时,收发时序1的方块中的数字“1”表示向前方发送波束,数字“2”表示向后方发送波束,数字“3”表示向左侧发送波束,数字“4”表示向右侧发送波束。相应的,在接收波束时,收发时序1的方块中的数字“1”表示从后方接收波束,数字“2”表示从前方接收波束,数字“3”表示从右侧接收波束,数字“4”表示从左侧接收波束。
需要说明的是,上述以终端设备收发波束占用一个子帧为例,当然,收发的毫米波波束还可能占用其他数目的子帧,比如,一个毫米波波束占用2个子帧,本申请实施例对一个波束占用的子帧数目不进 行限制。
还需说明的是,上述以终端设备分别向4个方向发送波束,和终端设备分别从4个方向接收波束为例,当然,终端设备还可以根据通信需求,仅向其中的一个或多个方向发送波束,或仅从其他的一个或多个方向接收波束。比如,终端设备在3#子帧上向前方的终端设备发送波束,以期与前方的终端设备建立通信连接,在5#子帧上向左侧的终端设备发送波束,以期与左侧的终端设备建立通信连接,在7#子帧上接收前方终端设备的波束,等。
与图3中(a)的收发时序1类似,图3中(a)的收发时序2表示,在3#子帧上,从前方的终端设备接收波束(对应收发时序2的白色方块2)、在4#子帧上,从后方的终端设备接收波束(对应收发时序2的白色方块1)、在5#子帧上,从左方的终端设备接收波束(对应收发时序2的白色方块3)、在6#子帧上,从右方的终端设备接收波束(对应收发时序2的白色方块4)、在7#子帧上,向前方的终端设备发送波束(对应收发时序2的黑色方块1)、在8#子帧上,向后方的终端设备发送波束(对应收发时序2的黑色方块2)、在9#子帧上,向左方的终端设备发送波束(对应收发时序2的黑色方块3)、在10#子帧上,向右方的终端设备发送波束(对应收发时序2的黑色方块4)。
类似的,图3中(a)的静默监听时序表示,在3#子帧上,从前方的终端设备接收波束(对应静默监听时序中的白色方块2)、在4#子帧上,从后方的终端设备接收波束(对应静默监听时序的白色方块1)、在5#子帧上,从左方的终端设备接收波束(对应静默监听时序的白色方块3)、在6#子帧上,从右方的终端设备接收波束(对应静默监听时序的白色方块4)、在7#子帧上,从前方的终端设备接收波束、在8#子帧上,从后方的终端设备接收波束、在9#子帧上,从左方的终端设备接收波束、在10#子帧上,从右方的终端设备接收波束。
需要说明的是,在实际应用中,由于终端设备数目较多,且终端设备进行设备发现的时机不同,所以,终端设备之间的收发时序很可能并不同步,这样,终端设备之间无法监听到彼此的设备发现消息。通过设置静默监听时序,可以使得终端设备先切换至静默监听时序,增加终端设备的监听时间,以增加终端设备成功监听的概率,进而增加终端设备成功发现其他终端设备的概率。
示例性的,终端可使用的收发时序还可以为图3中(b)中的任一种收发时序,或者,为图3中(c)中的任一种收发时序。或者,为其他可行的收发时序,本申请实施例不再一一列举。
上述主要以终端设备定向接收为例,在另一些实施例中,终端设备也可以非定向的接收波束,参见图3中(d),在白色方块对应的接收波束时机,并未标注数字,即并未规定在哪一接收波束时机从哪一方向接收波束,比如,在7#子帧可以从前方接收波束,也可以从后方接收波束,或者,也可以从其他方向接收波束。
图3中(a)至(d),终端设备可在一段连续时间内发送或接收波束,比如在图3中(a)的收发时序1,终端设备可在子帧3#至6#上发送波束,如此,降低了切换收发方向导致的时延。
在不考虑低时延的情况下,终端设备可使用的收发时序还可以为图3中(e)的任一种收发时序。比如,终端设备在子帧3#上,向前方发送波束,之后,切换收发方向,终端设备在子帧4#上,从前方接收波束。
在另一些实施例中,参见图4,收发时序所指示的发送或接收波束的方向还可以包括8个方向,分别为左斜前方、正前方、右斜前、左方、右方、左斜后方、正后方、右斜后方。参见图3中(f),收发时序1、收发时序2和静默监听时序的具体实现。其中,每一方块所表示的含义可参见上文,这里不再赘述。
与收发时序指示8个波束方向相比,上文提及收发时序指示4个波束方向时,在一种可能的方式中, 4个方向中的前方可以仅指正前方,后方可以仅指正后方。在另一种可能的实现方式中,4个方向中的前方可以指正前方和斜前方,后方可以指正后方和斜后方。
上述主要以收发时序指示4个或8个方向为例进行说明,当然,收发时序具体指示几个波束方向,可另行设置,本申请实施例不做限定。
S202、若第一终端设备在第一时间段内接收到来自第二终端设备的设备发现消息,第一终端设备根据该设备发现消息,基于第一收发时序,向第二终端设备发送设备发现响应。
相应的,第二终端设备从第一终端设备接收设备发现响应。
作为一种可能的实现方式,第一终端设备通过PSSCH向第二终端设备发送设备发现响应。
容易理解的是,若第一终端设备能够通过PSSCH监听到来自第二终端设备的设备发现消息,说明第一终端设备和第二终端设备的时序同步,在这种情况下,第一终端设备和第二终端设备无需调整收发时序,第一终端设备继续使用第一收发时序向第二终端设备发送设备发现响应,以便于后续建立第一终端设备和第二终端设备之间的通信连接。示例性的,若第一收发时序为图3中(a)的收发时序1,则在第一终端设备通过PSSCH监听到来自第二终端设备的设备发现消息后,继续使用收发时序1与第二终端设备之间进行设备发现。具体的,第一终端设备在收发时序1的发送波束时机,比如子帧3#或子帧4#或子帧5#或子帧6#,向第二终端设备发送设备发现响应。
可选的,设备发现消息包括终端标识,比如,来自第二终端设备的设备发现消息包括第二终端设备的标识(国际移动用户识别码(international mobile subscriber identification number,IMSI)、国际移动设备识别码(international mobile equipment identity,IMEI)等)。
可选的,设备发现消息显示的包括波束标识。波束标识用于指示设备发现消息的发送方向。发送方向包括但不限于前、后、左、右。示例性的,波束标识可以为0(二进制00)、1(二进制01)、2(二进制10)、3(11),其中,00表示前方、01表示后方、10表示左方、11表示右方。如此,第一终端设备在监听到来自第二终端设备的设备发现消息后,可根据波束标识获取第二终端设备的位置。比如,参见图4,第一终端设备为A车中的手机,第二终端设备为A车后方车辆中的手机,若波束标识00表示向前方发送波束,第一终端设备在监听到来自第二终端设备的设备发现消息后,根据波束标识00可获知第二终端设备位于自身的后方。当然,具体哪一波束标识表示哪一发送方向,可以根据实际应用场景灵活设置,本申请实施例对此不进行限制。
当然,设备发现消息还可以隐式的指示其发送方向。作为一种可能的实现方式,由于收发时序包括接收或发送波束的规则,比如在哪一时隙或子帧发送或接收波束,以及包括接收或发送波束的方向,所以,第一终端设备可以根据接收设备发现消息的时机获知设备发现消息的发送方向。仍以图4为例,第一终端设备(A车中的手机)使用图3中(a)所示的收发时序1监听,且在子帧8#监听到来自第二终端设备的设备发现消息,则根据图3中(a)所示的收发时序1,在子帧8#监听到的设备发现消息为从后方接收的消息,说明第二终端设备在第一终端设备的后方。
如此,S202可具体实现为:第一终端设备基于第一收发时序、来自第二终端设备的设备发现消息的发送方向来发送设备发现响应。比如,第一收发时序为收发时序1,第二终端设备的设备发现消息来自第一终端设备的前方,则第一终端设备使用收发时序1,向前方的第二终端设备反馈设备发现响应。
可选的,来自第二终端设备的设备发现消息包括第二终端设备的收发时序的标识。比如,根据预配置,图3中(a)所示的收发时序1的标识为0(二进制为00),收发时序2的标识为1(二进制为01),静默监听时序的标识为2(二进制为10)。第二终端设备使用收发时序2,则来自第二终端设备的设备发现消息包括收发时序的标识10。
可选的,来自第二终端设备的设备发现消息包括第一连接标识,第一连接标识用于指示设备发现消息是否为第二终端设备监听到来自第一终端设备的设备发现消息后,向第一终端设备发送的消息。示例性的,第一连接标识为0或1。
其中,第一连接标识为0表示设备发现消息不是第二终端设备监听到来自第一终端设备的设备发现消息后,向第一终端设备发送的消息,也就是说,第二终端设备在没有监听到来自第一终端设备的设备发现消息的情况下,主动向第一终端设备发送设备发现消息,该设备发现消息包括第一连接标识0,以期和第一终端设备建立通信连接。这种情况下第一终端设备在接收到第一连接标识为0的设备发现消息后,向第二终端设备反馈设备发现响应,第一终端设备发送的设备发现响应包括第二连接标识1,该第二连接标识1用于指示第一终端设备已监听到来自第二终端设备的设备发现消息。后续,第二终端设备接收到第二连接标识为1的设备发现响应后,可向第一终端设备反馈建立通信连接指示,以指示建立第一终端设备和第二终端设备之间的通信连接。
第一连接标识为1表示设备发现消息是第二终端设备监听到来自第一终端设备的设备发现消息后,向第一终端设备发送的消息,也就是说,第一终端设备先向第二终端设备发送设备发现消息,第一终端设备发送的设备发现消息包括第二连接标识0。第二终端设备在监听到来自第一终端设备的设备发现消息的情况下,向第一终端设备反馈设备发现消息,第二终端设备反馈的设备发现消息包括第一连接标识1。如此,第一终端设备在监听到第一连接标识为1的设备发现消息后,向第二终端设备发送设备发现响应,该设备发现响应用于指示第一终端设备和第二终端设备之间建立连接。
S203、若第一终端设备在第一时间段内没有接收到来自第二终端设备的设备发现消息,且,第一终端设备在第一时间段内没有和其他终端设备建立连接,第一终端设备在第一时间段结束后,在第二时间段内采用如下任一种收发时序监听:
收发时序1、收发时序2、静默监听时序,其中,收发时序2与收发时序1相反,静默监听时序用于第一终端设备持续监听。
作为一种可能的实现方式,终端设备设置有定时器(timer),定时器的定时时长可以设置为第一时间段。终端设备使用某一收发时序监听,若定时器超时时,终端设备未监听到来自其他终端设备的设备发现消息,且该终端设备未与其他终端设备建立通信连接,说明该终端设备使用的收发时序可能不太适用于自身,则该终端设备在定时器超时时切换收发时序。比如,终端设备使用图3中(a)所示的收发时序1进行监听,在定时器超时时,即第一时间段内,该终端设备并未监听到其他终端设备的设备发现消息,且在第一时间段结束后,该终端设备不存在与其他终端设备的通信连接,则在第一时间段结束后,该终端设备从图3所示(a)中随机选择一种收发时序,比如,仍选择收发时序1进行监听,又或者,选择收发时序2进行监听。后续,在第二时间段内,该终端设备使用所选收发时序进行监听。
可选的,定时器的定时时长(即第一时间段)可以为收发时序对应时长的整数倍。以图3中(a)的收发时序1举例,定时器的定时时长可以为子帧3#至10#的时长,即每8个子帧为一个监听周期,若终端设备在一个监听周期内(8个子帧)均未监听到来自其他终端设备的设备发现消息或设备发现响应,则终端设备在下一监听周期的8个子帧上采用调整后的收发时序监听。又例如,定时器时长也可以为子帧3#至10#的时长的2倍。本申请实施例对定时器的定时时长的长短不做限定。
本申请实施例提供的设备发现方法,当第一终端设备能够监听到来自第二终端设备的设备发现消息时,说明第一终端设备和第二终端设备的时序同步,无需调整第一终端设备和第二终端设备的收发时序,第一终端设备可以继续使用第一收发时序向第二终端设备发送设备发现响应。当第一终端设备在第一时间段未监听到来自第二终端设备的设备发现消息,且第一终端设备未与其他终端设备连接,说明第一终 端设备的收发时序不适用当前的通信需求,第一终端设备可从多种可用收发时序中随机选取一种收发时序进行监听,提升监听的成功率,进而提升设备发现的成功率,贴近未来终端设备的通信需求。
以下结合不同场景,来说明本申请实施例提供的设备发现方法。
场景1:
参见图5,以有基站覆盖,第一终端设备先向第二终端设备发送设备发现消息,且在一段时间内,第一终端设备使用第一收发时序监听,第一终端设备和第二终端设备的时序同步为例,本申请实施例提供的设备发现方法,具体可以包括如下步骤:
S501、接入网设备向第一终端设备发送资源配置信息。
相应的,第一终端设备从接入网设备接收资源配置信息。
可选的,接入网设备发送广播消息。广播消息携带资源配置信息。接入网设备所服务的终端设备可以从广播消息中的资源配置信息中获知各自可使用的资源。其中,广播消息比如但不局限为系统信息块(System Information Block,SIB)。资源配置信息用于指示第一终端设备可使用的时频资源和/或指示第一终端设备可使用的收发时序。示例性的,资源配置信息用于指示第一终端设备可使用的时频资源,此种情况下,第一终端设备可使用的收发时序可以为预配置的收发时序。其中,时频资源包括时域和频域资源。或者,资源配置信息用于指示第一终端设备可使用的收发时序,此种情况下,第一终端设备可使用的时频资源可以是预配置的时频资源。或者,资源配置信息用于指示第一终端设备可使用的时频资源和第一终端设备可使用的收发时序。当然,接入网设备可以通过一条SIB为终端设备指示可使用的时频资源和收发时序,接入网设备还可以通过两条SIB分别指示终端设备可使用的时频资源和收发时序。
可选的,第一终端设备向接入网设备发送资源请求,资源请求用于请求第一终端设备可使用的时频资源和/或请求第一终端设备可使用的收发时序。
作为一种可能的实现方式,第一终端设备可使用的时频资源包括毫米波段的频域资源。这意味着,第一终端设备可以通过收发毫米波波束进行设备点对点(device-to-device,D2D)或者V2X通信,或者其他形式的设备间直连通信,比如,第一终端设备可以通过收发毫米波波束进行设备发现,从而发现其他终端设备,或者,被其他设备发现。
可选的,接入网设备向第一终端设备指示可用的收发时序,可以存在如下两种方式:
方式1:接入网设备向第一终端设备发送至少一种可使用的收发时序。可选的,可使用的收发时序为如下收发时序中的任一种:收发时序1、收发时序2和静默监听时序。比如,可使用的收发时序为图3中(a)的收发时序1、收发时序2、静默监听时序中的任一种收发时序,又比如,可使用的收发时序为图3中(b)的收发时序1、收发时序2、静默监听时序中的任一种收发时序,再比如,可使用的收发时序为图3中(f)的任一种收发时序,或者其他可行的收发时序,本申请实施例不再一一列举。
方式2:终端设备和接入网设备预先配置有收发时序以及收发时序对应的标识。如此,接入网设备向第一终端设备发送至少一种收发时序的标识,再由第一终端设备根据收发时序的标识可确定自身所使用的收发时序。比如,根据预配置的收发时序及标识,图3中(a)所示的收发时序1的标识为0(二进制为00),收发时序2的标识为1(二进制为01),静默监听时序的标识为2(二进制为10)。接入网设备向第一终端设备发送00(对应收发时序1),第一终端设备根据预配置策略等确定使用收发时序2监听,或者,第一终端设备根据预配置策略确定使用收发时序1监听,或者,第一终端设备根据预配置策略确定使用静默监听时序监听。作为一种可能的实现方式,第一终端设备中的预配置策略可以由设备厂商出厂时预先配置好。在另一示例中,接入网设备还可以向第一终端设备发送00(对应收发时序1)、01(对应收发时序2),由第一终端设备确定所使用的收发时序,比如,确定使用收发时序2监听。
当然,收发时序1、2、静默监听时序的标识还可以为其他,比如,在另一示例中,收发时序1的标识为1(二进制为01),收发时序2的标识为2(二进制为10),静默监听时序的标识为3(二进制为11),本申请实施例不对各收发时序的标识做出限定。
可选的,接入网设备还可以向终端设备发送其他形式的信息,用于指示终端设备可使用的收发时序,比如,发送表格形式的信息,用于指示收发时序,本申请实施例对用于指示收发时序的方式不进行限制。
S502、接入网设备向第二终端设备发送资源配置信息。
相应的,第二终端设备从接入网设备接收资源配置信息。
可选的,接入网设备发送广播消息,广播消息携带资源配置信息。其中,该资源配置信息用于指示第二终端设备可使用的时频资源,或用于指示第二终端设备可使用的收发时序,或者,用于指示第二终端设备可使用的时频资源和第二终端设备可使用的收发时序。
可选的,第二终端设备向接入网设备发送资源请求,资源请求用于请求第二终端设备可使用的时频资源和/或请求第二终端设备可使用的收发时序。
作为一种可能的实现方式,第二终端设备可使用的时频资源包括毫米波段的频域资源。
可选的,第二终端设备能够使用的收发时序可以是收发时序1,或收发时序2,或静默监听时序。
具体的,S502的实现流程可参见S501,这里不再赘述。
需要说明的是,本申请实施例中,对S501和S502的执行顺序不进行限制,即接入网设备可以先向第一终端设备发送资源配置信息,再向第二终端设备发送资源配置信息,或者,先向第二终端设备发送资源配置信息,再向第一终端设备发送资源配置信息,或者,接入网设备同时执行S501和S502。相应的,第一终端设备和第二终端设备从接入网设备接收资源配置信息的顺序也可以包括至少三种情况。
S503、第一终端设备使用第一收发时序向第二终端设备发送设备发现消息。
相应的,第二终端设备接收来自第一终端设备的设备发现消息。
作为一种可能的实现方式,第一终端设备通过PSSCH向第二终端设备发送设备发现消息。
其中,第一收发时序为上述的收发时序1、收发时序2中的任一种。示例性的,参见图3中(a),第一终端设备使用收发时序1,在子帧3#上向前方的第二终端设备发送设备发现消息。
第一终端设备发送的设备发现消息携带第二连接标识0,用于指示该设备发现消息是第一终端设备主动发送的消息。
可选的,第一终端设备发送的设备发现消息携带波束标识00,该波束标识00表示向前方发送设备发现消息。
可选的,第一终端设备发送的设备发现消息携带第一终端设备的标识。
可选的,第一终端设备发送的设备发现消息携带第一终端设备的收发时序,或者携带第一终端设备的收发时序的标识。
S504、第二终端设备向第一终端设备发送设备发现消息。
相应的,第一终端设备接收来自第二终端设备的设备发现消息。
作为一种可能的实现方式,第二终端设备通过PSSCH向第一终端设备发送设备发现消息。
可选的,第二终端设备根据来自第一终端设备的设备发现消息中的波束标识,获知第一终端设备的设备发现消息的发送方向。
可选的,第二终端设备根据来自第一终端设备的设备发现消息,获知第一终端设备的收发时序。
第二终端设备根据来自第一终端设备的设备发现消息中的第二连接标识0,获知该设备发现消息是第一终端设备主动发送的,用于请求发现第二终端设备。如此,第二终端设备向第一终端设备发送设备 发现消息,第二终端设备发送的该设备发现消息携带第一连接标识1,用于指示该设备发现消息不是第二终端设备主动发送的消息,而是在第二终端设备监听到来自第一终端设备的设备发现消息后,第二终端设备向第一终端设备发送的消息。
可选的,第二终端设备发送的设备发现消息携带波束标识。
可选的,第二终端设备发送的设备发现消息携带第二终端设备的标识。
可选的,第二终端设备发送的设备发现消息携带第二终端设备的收发时序,或者携带第二终端设备的收发时序的标识。
S505、第一终端设备根据来自第二终端设备的设备发现消息,基于第一收发时序向第二终端设备发送设备发现响应。
相应的,第二终端设备接收来自第一终端设备的设备发现响应。该设备发现响应用于指示第一终端设备和第二终端设备之间建立通信连接。
作为一种可能的实现方式,第一终端设备通过PSSCH向第二终端设备发送设备发现响应。
作为一种可能的实现方式,第一终端设备根据来自第二终端设备且携带第一连接标识1的设备发现消息获知,第二终端设备已监听到第一终端设备的设备发现消息,并且,第一终端设备已监听到第二终端设备的设备发现消息。如此,第一终端设备可向第二终端设备反馈设备发现响应,以指示第一终端设备和第二终端设备之间建立通信连接。
可选且示例性的,来自第二终端设备的设备发现消息携带波束标识00,波束标识00标识向前发送设备发现消息,第一终端设备根据波束标识00,获知第二终端设备位于自身的后方。
场景2:
参见图6,以有基站覆盖,第二终端设备先向第一终端设备发送设备发现消息,且在一段时间内,第一终端设备和第二终端设备的时序同步,第一终端设备使用第一收发时序监听为例,本申请实施例提供的设备发现方法,具体可以包括如下步骤:
S501、接入网设备向第一终端设备发送资源配置信息。
相应的,第一终端设备从接入网设备接收资源配置信息。
S502、接入网设备向第二终端设备发送资源配置信息。
相应的,第二终端设备从接入网设备接收资源配置信息。
S603、第二终端设备向第一终端设备发送设备发现消息。
相应的,第一终端设备接收来自第二终端设备的设备发现消息。
作为一种可能的实现方式,第二终端设备通过PSSCH向第一终端设备发送设备发现消息。
其中,第二终端设备发送的设备发现消息携带第一连接标识0,用于指示该设备发现消息是第二终端设备主动发送的消息。
可选的,第二终端设备发送的设备发现消息携带第二终端设备的标识。
可选的,第二终端设备发送的设备发现消息携带第二终端设备的收发时序或第二终端设备的收发时序标识。
可选的,第二终端设备发送的设备发现消息携带波束标识。
S604、第一终端设备根据来自第二终端设备的设备发现消息,基于第一收发时序,向第二终端设备发送设备发现响应。
相应的,第二终端设备接收来自第一终端设备的设备发现响应。
作为一种可能的实现方式,第一终端设备通过PSSCH向第二终端设备发送设备发现响应。
可选的,第一终端设备根据来自第二终端设备的设备发现消息中的波束标识,获知该设备发现消息的发送方向。
第一终端设备根据来自第二终端设备的设备发现消息中的第一连接标识0,获知该设备发现消息为第二终端设备主动发送的。如此,第一终端设备向第二终端设备发送设备发现响应,第一终端设备发送的该设备发现响应携带第二连接标识1,用于指示第一终端设备已监听到来自第二终端设备的设备发现消息。
可选的,第一终端设备发送的设备发现响应携带第一终端设备的标识。
可选的,第一终端设备发送的设备发现响应携带第一终端设备的收发时序或第一终端设备的收发时序标识。
可选的,第一终端设备发送的设备发现响应携带波束标识,用于指示该设备发现响应的发送方向。
S605、第二终端设备向第一终端设备发送设备发现响应。
相应的,第一终端设备接收来自第二终端设备的设备发现响应。该设备发现响应用于指示第一终端设备和第二终端设备之间建立通信连接。
作为一种可能的实现方式,第二终端设备通过PSSCH向第一终端设备发送设备发现响应。
可选的,第二终端设备发送的设备发现响应携带第二终端设备的标识。
可选的,第二终端设备发送的设备发现响应携带第二终端设备的收发时序或第二终端设备的收发时序标识。
可选的,第二终端设备发送的设备发现响应携带波束标识,用于指示该设备发现响应的发送方向。
场景3:
参见图7,以无基站覆盖,第一终端设备先向第二终端设备发送设备发现消息,且在一段时间内,第一终端设备使用第一收发时序监听,第一终端设备和第二终端设备的时序同步为例,本申请实施例提供的设备发现方法,具体可以包括如下步骤:
S701、第一终端设备使用第一收发时序向第二终端设备发送设备发现消息。
相应的,第二终端设备接收来自第一终端设备的设备发现消息。
S702、第二终端设备向第一终端设备发送设备发现消息。
相应的,第一终端设备接收来自第二终端设备的设备发现消息。
S703、第一终端设备根据来自第二终端设备的设备发现消息,基于第一收发时序向第二终端设备发送设备发现响应。
相应的,第二终端设备接收来自第一终端设备的设备发现响应。该设备发现响应用于指示第一终端设备和第二终端设备之间建立通信连接。
其中,S701至S703的详细流程可分别参见上述S503至S505,这里不再赘述。与图5方法所不同的是,图7中,第一终端设备和第二终端设备可使用的时频资源为终端设备中预配置的时频资源。终端设备可使用的收发时序为预配置的收发时序。可选的,预配置一种收发时序作为设备发现的收发时序,当终端设备进行设备发现时,使用预配置的这种收发时序监听。如此,终端设备无需通过轮询从多个收发时序选取一种作为用于监听的时序,可以降低终端设备的功耗。比如,终端设备中预配置有图3中(a)所示的收发时序1。后续,当该终端设备有设备发现需求时,终端设备无需通过轮询从多个收发时序中选取一种,而是直接采用收发时序1进行设备发现,可以降低终端功耗。后续,若在一个监听周期内终端设备未监听到来自其他终端设备的设备发现消息,且该终端设备未和其他终端设备连接,则该终端设备可以基于收发时序1进行收发时序调整。可见,通过在终端设备预配置一个收发时序,后续,终端设 备可以基于预配置的该收发时序进行收发时序调整,可以满足终端设备后续的设备发现需求。
当然,还可以预配置一种收发时序,当终端设备进行设备发现时,直接使用预配置收发时序的相反时序监听,也能避免通过轮询从多个收发时序选取一种作为用于监听的时序,可以降低终端设备的功耗。当然,还可能存在其他预配置方式,这里不再一一列举。此外,本申请实施例对终端设备中预配置的收发时序的数目并不进行限制,比如,终端设备中还可以预配置有2个收发时序。
场景4:
参见图8,以无基站覆盖,第二终端设备先向第一终端设备发送设备发现消息,且在一段时间内,第一终端设备和第二终端设备的时序同步,第一终端设备使用第一收发时序监听为例,本申请实施例提供的设备发现方法,具体可以包括如下步骤:
S801、第二终端设备向第一终端设备发送设备发现消息。
相应的,第一终端设备接收来自第二终端设备的设备发现消息。
其中,第二终端设备发送的设备发现消息携带第一连接标识0,用于指示该设备发现消息是第二终端设备主动发送的消息。
S802、第一终端设备根据来自第二终端设备的设备发现消息,基于第一收发时序,向第二终端设备发送设备发现响应。
相应的,第二终端设备接收来自第一终端设备的设备发现响应。
其中,第一终端设备发送的设备发现响应携带第二连接标识1,用于指示第一终端设备已监听到来自第二终端设备的设备发现消息。
S803、第二终端设备向第一终端设备发送设备发现响应。
相应的,第一终端设备接收来自第二终端设备的设备发现响应。该设备发现响应用于指示第一终端设备和第二终端设备之间建立通信连接。
关于S801至S803的详细流程,可分别参见上述S603至S605,这里不再赘述。与图6所示方法不同在于,在图8所示方法中,终端设备可使用的时频资源为预配置的时频资源,终端设备可使用的收发时序为预配置的收发时序。
场景5:
参见图9,以有基站覆盖,第一终端设备先向第二终端设备发送设备发现消息,且在一段时间内,第一终端设备使用第一收发时序监听,第一终端设备和第二终端设备的时序不同步为例,本申请实施例提供的设备发现方法,具体可以包括如下步骤:
S501、接入网设备向第一终端设备发送资源配置信息。
相应的,第一终端设备从接入网设备接收资源配置信息。
S502、接入网设备向第二终端设备发送资源配置信息。
相应的,第二终端设备从接入网设备接收资源配置信息。
S503、在第一时间段内,第一终端设备使用第一收发时序向第二终端设备发送设备发现消息。
S904、第一终端设备在第一时间段内未接收到来自第二终端设备的设备发现消息,且,第一终端设备没有和其他终端设备建立连接,第一终端设备调整收发时序。
具体的,第一终端设备在第一时间段结束后,在第二时间段内采用如下任一种收发时序监听:收发时序1、收发时序2、静默监听时序,其中,收发时序1与收发时序2相反,静默监听时序用于第一终端设备持续监听。
容易理解的是,第一终端设备可以设置定时器,定时器的定时时长可以为第一时间段(比如2ms), 若在第一时间段内,第一终端设备和第二终端设备的时序不同步,则第一终端设备在第一时间段内,通常无法接收到来自第二终端设备的设备发现消息,此时,若在定时器超时时刻,第一终端设备没有和其他终端设备建立连接,则为了提升第一终端设备和第二终端设备之间建立通信连接的成功率,需调整第一终端设备的收发时序。如此,第一终端设备调整收发时序后,有可能成功监听到来自第二终端设备的设备发现消息。示例性的,第一终端设备在第一时间段内采用图3中(a)的收发时序1,若在定时器超时,即直至第一时间段结束,第一终端设备仍未监听到来自第二终端设备的设备发现消息,第一终端设备调整收发时序,即从图3中(a)所示的3中收发时序中随机选取收发时序2,并使用收发时序2监听。
S905、第二终端设备向第一终端设备发送设备发现消息。
相应的,第一终端设备接收来自第二终端设备的设备发现消息。
其中,第二终端设备发送的设备发现消息携带第一连接标识1,用于指示该设备发现消息不是第二终端设备主动发送的消息,而是在第二终端设备监听到来自第一终端设备的设备发现消息后,第二终端设备向第一终端设备发送的消息。
可以理解的是,当第一终端设备执行S904后,即调整收发时序后,若第一终端设备的收发时序和第二终端设备的收发时序同步,则第二终端设备通常能够成功接收到来自第一终端设备的设备发现消息(携带第二连接标识0),如此,第二终端设备向第一终端设备发送设备发现消息(携带第一连接标识1)。反之,当第一终端设备执行S904后,即调整收发时序后,若在一段时间内,仍未接收到来自第二终端设备的设备发现消息,则第一终端设备可以继续调整收发时序,比如从图3中(a)所示的3中收发时序中随机选取一种,直至第一终端设备能够监听到来自第二终端设备的设备发现消息。
S906、第一终端设备根据来自第二终端设备的设备发现消息,基于调整后的收发时序向第二终端设备发送设备发现响应。
相应的,第二终端设备接收来自第一终端设备的设备发现响应。该设备发现响应用于指示第一终端设备和第二终端设备之间建立通信连接。
结合上述举例,在定时器超时后,即第一时间段结束后,第一终端设备在第二时间段内,使用随机选取的收发时序2监听,即使用收发时序2向第二终端设备发送设备发现响应。
在本申请实施例中,第一时间段和第二时间段的时长可能相同,也可能不同,具体可以根据应用场景灵活设置,这里不做限定。此外,由于第一终端设备调整时序可能存在一定时延,所以,第一时间段和第二时间段之间可能存在时间间隔,图9中仅示例性示出了第一时间段和第二时间段之间不存在时间间隔的情况。
其中,图9所示方法的各步骤的详细描述,可参见上述的相关描述,这里不再赘述。
场景6:
参见图10,以有基站覆盖,第二终端设备先向第一终端设备发送设备发现消息,且在一段时间内,第一终端设备和第二终端设备的时序不同步,第一终端设备使用第一收发时序监听为例,本申请实施例提供的设备发现方法,具体可以包括如下步骤:
S501、接入网设备向第一终端设备发送资源配置信息。
相应的,第一终端设备从接入网设备接收资源配置信息。
S502、接入网设备向第二终端设备发送资源配置信息。
相应的,第二终端设备从接入网设备接收资源配置信息。
S1003、第一终端设备使用第一收发时序监听。
S1004、第一终端设备在第一时间段内未监听到来自第二终端设备的设备发现消息,且,第一终端设备没有和其他终端设备建立连接,第一终端设备调整收发时序。
S1005、第二终端设备向第一终端设备发送设备发现消息。
相应的,第一终端设备接收来自第二终端设备的设备发现消息。
其中,第二终端设备发送的设备发现消息携带第一连接标识0,用于指示该设备发现消息是第二终端设备主动发送的消息。
S1006、第一终端设备根据来自第二终端设备的设备发现消息,基于调整后的收发时序向第二终端设备发送设备发现响应。
相应的,第二终端设备接收来自第一终端设备的设备发现响应。第一终端设备发送的设备发现响应携带第二连接标识1,用于指示第一终端设备已监听到来自第二终端设备的设备发现消息。
S1007、第二终端设备向第一终端设备发送设备发现响应。
相应的,第一终端设备从第二终端设备接收设备发现响应。该设备发现响应用于指示第一终端设备和第二终端设备之间建立通信连接。
其中,图10方法的各步骤的详细流程可参见上述相关流程。
场景7:
参见图11,以无基站覆盖,第一终端设备先向第二终端设备发送设备发现消息,且在第一时间段内,第一终端设备使用第一收发时序监听,第一终端设备和第二终端设备的时序不同步为例,本申请实施例提供的设备发现方法,具体可以包括如下步骤:
S701、第一终端设备使用第一收发时序向第二终端设备发送设备发现消息。
相应的,第二终端设备接收来自第一终端设备的设备发现消息。第一终端设备发送的设备发现消息携带第二连接标识0,用于指示该消息为第一终端设备主动发送的,而非在监听到来自第二终端设备的设备发现消息之后发送的。
S1102、第一终端设备在第一时间段内,未监听到来自第二终端设备的设备发现消息,且,第一终端设备没有和其他终端设备建立连接,第一终端设备调整收发时序。
S1103、第二终端设备向第一终端设备发送设备发现消息。
相应的,第一终端设备接收来自第二终端设备的设备发现消息。设备发现消息携带第一连接标识1,用于指示第二终端设备已监听到来自第一终端设备的设备发现消息。
S1104、第一终端设备根据来自第二终端设备的设备发现消息,基于调整后的收发时序,向第二终端设备发送设备发现响应。
相应的,第二终端设备接收来自第一终端设备的设备发现响应。该设备发现响应用于指示第一终端设备和第二终端设备之间建立通信连接。
其中,S701、S1101至S1104的详细流程可参见图9相关流程。与图9所示方法不同在于,在图11所示方法中,终端设备可使用的时频资源为预配置的时频资源,终端设备可使用的收发时序为预配置的收发时序。
场景8:
参见图12,以无基站覆盖,第二终端设备先向第一终端设备发送设备发现消息,且在第一时间段内,第一终端设备和第二终端设备的时序不同步,第一终端设备使用第一收发时序监听为例,本申请实施例提供的设备发现方法,具体可以包括如下步骤:
S1201、第一终端设备使用第一收发时序在第一时间段内监听。
S1202、第一终端设备在第一时间段内未接收到来自第二终端设备的设备发现消息,且,第一终端设备没有和其他终端设备建立连接,第一终端设备调整收发时序。
S1203、第二终端设备向第一终端设备发送设备发现消息。
相应的,第一终端设备接收来自第二终端设备的设备发现消息。
其中,第二终端设备发送的设备发现消息携带第一连接标识0,用于指示该设备发现消息是第二终端设备主动发送的消息。
S1204、第一终端设备根据来自第二终端设备的设备发现消息,基于调整后收发时序,向第二终端设备发送设备发现响应。
相应的,第二终端设备接收来自第一终端设备的设备发现响应。
其中,第一终端设备发送的设备发现响应携带第二连接标识1,用于指示第一终端设备已监听到来自第二终端设备的设备发现消息。
S1205、第二终端设备向第一终端设备发送设备发现响应。
相应的,第一终端设备接收来自第二终端设备的设备发现响应。该设备发现响应用于指示第一终端设备和第二终端设备之间建立通信连接。
关于S1201至S1205的详细流程,可分别参见图10相关流程。与图10所示方法不同在于,在图12所示方法中,终端设备可使用的时频资源为预配置的时频资源,终端设备可使用的收发时序为预配置的收发时序。
容易理解的是,图9至12中,仅以第一终端设备经过一次收发时序调整,其收发时序就可以和第二终端设备同步为例。在实际应用中,第一终端设备还可能需经过多次收发时序调整,才能和第二终端设备的收发时序同步,本申请实施例对第一终端设备收发时序的具体调整次数不做限定。
上述主要从不同网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是,第一终端设备、第二终端设备和接入网设备为了实现上述功能,其包含了执行各个功能相应的硬件结构和/或软件模块。结合本申请中所公开的实施例描述的各示例的单元及算法步骤,本申请实施例能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同的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技术方案的范围。
本申请实施例可以根据上述方法示例对设备发现装置进行功能单元的划分,例如,可以对应各个功能划分各个功能单元,也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。需要说明的是,本申请实施例中对单元的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。
图13示出了本申请实施例中提供的设备发现装置的一种示意性框图。该设备发现装置1300可以以软件的形式存在,也可以为设备,还可用于设备的芯片。装置1300包括:处理单元1302和通信单元1303。
当设备发现装置用于实现第一终端设备的功能时,示例性的,处理单元1302可以用于支持装置1300执行图9中的S904,图10中的S1004,和/或用于本文所描述的方案的其它过程。通信单元1303用于支持装置1300和其他网元(例如第二终端设备)之间的通信。比如,通信单元用于支持装置1300执行图2所示的S202、图5所示的S503,和/或用于本文所描述的方案的其它过程。
当设备发现装置用于实现上述方法中第二终端设备的功能时,示例性的,处理单元1302可以用于支持装置1300在收发时序与其他终端设备不同步时进行收发时序调整,和/或用于本文所描述的方案的 其它过程。通信单元1303用于支持装置1300和其他网元(例如第一终端设备)之间的通信。比如,通信单元用于支持装置1300执行图2所示的S202、图5所示的S503,和/或用于本文所描述的方案的其它过程。
当设备发现装置用于实现上述方法中接入网设备的功能时,处理单元1302可以用于支持装置1300确定各个终端设备的可使用时频资源和可使用收发时序,和/或用于本文所描述的方案的其它过程。通信单元1303用于支持装置1300和其他网元(例如第一终端设备)之间的通信。比如,通信单元1303用于支持装置1300执行图5所示的S501、S502,和/或用于本文所描述的方案的其它过程。
可选的,设备发现装置1300还可以包括存储单元1301,用于存储装置1300的程序代码和数据,数据可以包括不限于原始数据或者中间数据等。
其中,处理单元1302可以是处理器或控制器,例如可以是CPU,通用处理器,DSP,ASIC,FPGA或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框,模块和电路。处理器也可以是实现计算功能的组合,例如包含一个或多个微处理器组合,DSP和微处理器的组合等等。
通信单元1303可以是通信接口、收发器或收发电路等,其中,该通信接口是统称,在具体实现中,该通信接口可以包括多个接口,例如可以包括:基站和终端之间的接口和/或其他接口。
存储单元1301可以是存储器。
当处理单元1302为处理器,通信单元1303为通信接口,存储单元1301为存储器时,本申请实施例所涉及的设备发现装置1400可以为图14所示。
参阅图14所示,该装置1400包括:处理器1402、通信接口1403、存储器1401。可选的,装置1400还可以包括总线1404。其中,通信接口1403、处理器1402以及存储器1401可以通过总线1404相互连接;总线1404可以是外设部件互连标准(Peripheral Component Interconnect,简称PCI)总线或扩展工业标准结构(Extended Industry Standard Architecture,简称EISA)总线等。所述总线1404可以分为地址总线、数据总线、控制总线等。为便于表示,图14中仅用一条粗线表示,但并不表示仅有一根总线或一种类型的总线。
本领域普通技术人员可以理解:在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line,DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包括一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,数字视频光盘(Digital Video Disc,DVD))、或者半导体介质(例如固态硬盘(Solid State Disk,SSD))等。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统,装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统, 或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络设备(例如终端)上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个功能单元独立存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用硬件加软件功能单元的形式实现。
通过以上的实施方式的描述,所属领域的技术人员可以清楚地了解到本申请可借助软件加必需的通用硬件的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分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可读取的存储介质中,如计算机的软盘,硬盘或光盘等,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述的方法。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,在本申请揭露的技术范围内的变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。

Claims (139)

  1. 一种设备发现方法,其特征在于,包括:
    第一终端设备在第一时间段内采用第一收发时序监听;
    若所述第一终端设备在第一时间段内接收到来自第二终端设备的设备发现消息,所述第一终端设备根据所述设备发现消息,基于所述第一收发时序,向所述第二终端设备发送设备发现响应;
    若所述第一终端设备在所述第一时间段内没有接收到来自第二终端设备的设备发现消息,且所述第一终端设备没有和其他终端设备建立连接,则所述第一终端设备在所述第一时间段结束后,在第二时间段内采用如下任一种收发时序监听:所述第一收发时序、第二收发时序、静默监听时序,其中所述第二收发时序与所述第一收发时序相反,所述静默监听时序用于所述第一终端设备持续监听。
  2. 根据权利要求1所述的方法,其特征在于,所述设备发现消息包括第一连接标识,和/或波束标识,和/或终端标识,和/或所述第二终端设备的收发时序的标识;
    其中,所述波束标识用于指示所述设备发现消息的发送方向。
  3. 根据权利要求2所述的方法,其特征在于,
    所述第一连接标识用于指示所述设备发现消息为所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应用于指示所述第一终端设备和所述第二终端设备之间建立连接。
  4. 根据权利要求2所述的方法,其特征在于,
    所述第一连接标识用于指示所述设备发现消息不是所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应包括第二连接标识,所述第二连接标识用于指示所述第一终端设备监听到来自所述第二终端设备的设备发现消息。
  5. 根据权利要求2至4中任一项所述的方法,其特征在于,所述第一终端设备根据所述设备发现消息,基于所述第一收发时序,向所述第二终端设备发送设备发现响应,包括:
    所述第一终端设备根据所述波束标识,确定所述设备发现消息的发送方向;
    所述第一终端设备基于所述第一收发时序,以及所述发送方向向所述第二终端设备发送所述设备发现响应。
  6. 根据权利要求1至5中任一项所述的方法,其特征在于,所述收发时序用于指示发送波束和/或接收波束的规则、以及指示发送波束的方向和/或接收波束的方向。
  7. 根据权利要求1至6中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备从接入网设备接收资源配置信息,所述资源配置信息用于指示所述第一终端设备可使用的时频资源和/或指示所述第一终端设备可使用的收发时序。
  8. 根据权利要求7所述的方法,其特征在于,所述方法还包括:所述第一终端设备向所述接入网设备发送资源请求,所述资源请求用于请求所述第一终端设备可使用的时频资源和/或请求所述第一终端设备可使用的收发时序。
  9. 根据权利要求1至6中任一项所述的方法,其特征在于,所述第一终端设备可使用的时频资源为预配置资源,所述第一终端设备可使用的收发时序为预配置时序,所述预配置时序包括所述第一收发时序、所述第二收发时序、所述静默监听时序。
  10. 根据权利要求1至9中任一项所述的方法,其特征在于,所述第一终端设备监听,包括: 所述第一终端设备通过物理侧行链路共享信道PSSCH监听;
    所述第一终端设备向所述第二终端设备发送设备发现响应,包括:所述第一终端设备通过PSSCH向所述第二终端设备发送设备发现响应。
  11. 根据权利要求7至10中任一项所述的方法,其特征在于,
    所述时频资源包括毫米波段的频域资源。
  12. 一种设备发现方法,其特征在于,包括:
    第二终端设备向第一终端设备发送设备发现消息,所述设备发现消息包括第一连接标识,和/或波束标识,和/或终端标识,和/或第二终端设备的收发时序的标识;
    所述第二终端设备从第一终端设备接收设备发现响应。
  13. 根据权利要求12所述的方法,其特征在于,还包括:
    所述第二终端设备从接入网设备接收资源配置信息,资源配置信息用于指示第二终端设备可使用的时频资源和/或指示第二终端设备可使用的收发时序。
  14. 根据权利要求12所述的方法,其特征在于,还包括:
    所述第二终端设备向接入网设备发送资源请求,资源请求用于请求第二终端设备可使用的时频资源和/或请求第二终端设备可使用的收发时序。
  15. 根据权利要求12至14中任一项所述的方法,其特征在于,所述第二终端设备向第一终端设备发送设备发现消息,包括:
    第二终端设备通过物理侧行链路共享信道PSSCH向第一终端设备发送设备发现消息。
  16. 根据权利要求12至15中任一项所述的方法,其特征在于,所述第二终端设备从第一终端设备接收设备发现响应包括:
    所述第二终端设备通过PSSCH从第一终端设备接收设备发现响应。
  17. 根据权利要求12至16中任一项所述的方法,其特征在于,
    所述波束标识用于指示所述设备发现消息的发送方向。
  18. 根据权利要求12至17中任一项所述的方法,其特征在于,
    所述第一连接标识用于指示所述设备发现消息为所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应用于指示所述第一终端设备和所述第二终端设备之间建立连接。
  19. 根据权利要求12至18中任一项所述的方法,其特征在于,
    所述第一连接标识用于指示所述设备发现消息不是所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应包括第二连接标识,所述第二连接标识用于指示所述第一终端设备监听到来自所述第二终端设备的设备发现消息。
  20. 根据权利要求12至19中任一项所述的方法,其特征在于,所述收发时序用于指示发送波束和/或接收波束的规则、以及指示发送波束的方向和/或接收波束的方向。
  21. 根据权利要求12至20中任一项所述的方法,其特征在于,所述第一终端设备可使用的时频资源为预配置资源,所述第一终端设备可使用的收发时序为预配置时序,所述预配置时序包括所述第一收发时序、所述第二收发时序、所述静默监听时序。
  22. 根据权利要求12至21中任一项所述的方法,其特征在于,时频资源包括毫米波段的频 域资源。
  23. 一种设备发现方法,其特征在于,包括:
    接入网设备从第一终端设备或第二终端设备接收资源请求,所述资源请求用于请求第一终端设备或第二终端设备可使用的时频资源,和/或请求第一终端设备或第二终端设备可使用的收发时序;
    所述接入网设备向第一终端设备或第二终端设备发送资源配置信息,所述资源配置信息用于指示第一终端设备或第二终端设备可使用的时频资源,和/或指示第一终端设备或第二终端设备可使用的收发时序。
  24. 一种设备发现方法,其特征在于,包括:
    第一终端接收来自第二终端的第一设备发现消息,第一设备发现消息用于指示第二终端所使用的收发时序;
    所述第一终端根据第一设备发现消息,在第二终端的接收时序发送设备发现响应。
  25. 根据权利要求24所述的方法,其特征在于,还包括:
    如果在预设时段内,第一终端在第一时序未监听到第一设备发现消息,则所述第一终端将收发时序由第一时序切换至第二时序,第一时序包括配置时序,或配置时序相反的时序,或静默时序,第二时序包括配置时序,或配置时序相反的时序,或静默时序,与配置时序相反的时序中的接收时序为配置时序中的发送时序,与配置时序相反的时序中的发送时序为配置时序中的接收时序。
  26. 根据权利要求24或25所述的方法,其特征在于,还包括:所述第一终端根据第一设备发现消息,在第二终端的接收时序发送设备发现响应,包括:
    所述第一终端根据波束标识,确定设备发现响应的第二发送方向,第二发送方向与第一发送方向相反;第一终端在第二终端的接收时序、以第二发送方向向第二终端发送设备发现响应。
  27. 根据权利要求24至26中任一项所述的方法,其特征在于,还包括:
    所述第一终端向接入网设备发送资源请求,资源请求用于请求第一终端所使用的时频资源。
  28. 根据权利要求24至27中任一项所述的方法,其特征在于,还包括:
    所述第一终端从接入网设备接收资源配置消息,资源配置消息用于配置第一终端所使用的时频资源以及配置第一终端所使用的收发时序。
  29. 根据权利要求24至28中任一项所述的方法,其特征在于,第一终端接收来自第二终端的第一设备发现消息,包括:
    所述第一终端通过物理侧行链路共享信道PSSCH接收第一设备发现消息。
  30. 根据权利要求24至29中任一项所述的方法,其特征在于,
    所述第一设备发现消息还包括波束标识,波束标识用于指示第一设备发现消息的第一发送方向。
  31. 根据权利要求24至30中任一项所述的方法,其特征在于,
    所述设备发现响应还包括用于指示第二发送方向的波束标识、第一终端的标识、第一终端的收发时序中的至少一项。
  32. 根据权利要求27所述的方法,其特征在于,
    所述时频资源包括毫米波段的频域资源。
  33. 一种设备发现方法,其特征在于,包括:
    第二终端向第一终端发送第一设备发现消息,第一设备发现消息用于指示第二终端所使用的收发时序;
    所述第二终端在第二终端的接收时序从第一终端接收设备发现响应。
  34. 根据权利要求33所述的方法,其特征在于,所述第二终端向第一终端发送第一设备发现消息,包括:
    第二终端通过PSSCH向第一终端发送第一设备发现消息。
  35. 根据权利要求34所述的方法,其特征在于,所述第二终端在第二终端的接收时序从第一终端接收设备发现响应,包括:
    所述第二终端在第二终端的接收时序,通过PSSCH从第一终端接收设备发现响应。
  36. 根据权利要求33至35中任一项所述的方法,其特征在于,
    所述第一设备发现消息还包括波束标识,波束标识用于指示第一设备发现消息的第一发送方向。
  37. 根据权利要求33至36中任一项所述的方法,其特征在于,
    所述设备发现响应还包括用于指示第二发送方向的波束标识、第一终端的标识、第一终端的收发时序中的至少一项。
  38. 一种设备发现方法,其特征在于,包括:
    接入网设备发送资源配置消息,资源配置消息用于配置第一终端所使用的时频资源以及配置第一终端所使用的收发时序。
  39. 根据权利要求38所述的方法,其特征在于,还包括:
    所述接入网设备从第一终端设备接收资源请求,资源请求用于请求第一终端所使用的时频资源。
  40. 根据权利要求39所述的方法,其特征在于,
    所述时频资源包括毫米波段的频域资源。
  41. 一种设备发现方法,其特征在于,应用于设备发现系统,所述系统包括第一终端设备和第二终端设备,或者,所述系统包括第一终端设备和第二终端设备和接入网设备,所述方法包括:
    第一终端设备在第一时间段内采用第一收发时序监听;
    第二终端设备向所述第一终端设备发送设备发现消息;
    若所述第一终端设备在第一时间段内接收到来自第二终端设备的设备发现消息,所述第一终端设备根据所述设备发现消息,基于所述第一收发时序,向所述第二终端设备发送设备发现响应;
    若所述第一终端设备在所述第一时间段内没有接收到来自第二终端设备的设备发现消息,且,所述第一终端设备没有和其他终端设备建立连接,所述第一终端设备在所述第一时间段结束后,在第二时间段内采用如下任一种收发时序监听:所述第一收发时序、第二收发时序、静默监听时序,其中所述第二收发时序与所述第一收发时序相反,所述静默监听时序用于所述第一终端设备持续监听。
  42. 根据权利要求41所述的方法,其特征在于,所述设备发现消息包括第一连接标识,和/或波束标识,和/或终端标识,和/或所述第二终端设备的收发时序的标识;其中,所述波束标识用于指示所述设备发现消息的发送方向。
  43. 根据权利要求42所述的方法,其特征在于,
    所述第一连接标识用于指示所述设备发现消息为所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应用于指示所述第一终端设备和所述第二终端设备之间建立连接。
  44. 根据权利要求42所述的方法,其特征在于,
    所述第一连接标识用于指示所述设备发现消息不是所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应包括第二连接标识,所述第二连接标识用于指示所述第一终端设备监听到来自所述第二终端设备的设备发现消息。
  45. 根据权利要求42至44中任一项所述的方法,其特征在于,所述第一终端设备根据所述设备发现消息,基于所述第一收发时序,向所述第二终端设备发送设备发现响应,包括:
    所述第一终端设备根据所述波束标识,确定所述设备发现消息的发送方向;
    所述第一终端设备基于所述第一收发时序,以及所述发送方向向所述第二终端设备发送所述设备发现响应。
  46. 根据权利要求41至45中任一项所述的方法,其特征在于,所述收发时序用于指示发送波束和/或接收波束的规则、以及指示发送波束的方向和/或接收波束的方向。
  47. 根据权利要求41至46中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备从接入网设备接收资源配置信息,所述资源配置信息用于指示所述第一终端设备可使用的时频资源和/或指示所述第一终端设备可使用的收发时序。
  48. 根据权利要求47所述的方法,其特征在于,所述方法还包括:所述第一终端设备向所述接入网设备发送资源请求,所述资源请求用于请求所述第一终端设备可使用的时频资源和/或请求所述第一终端设备可使用的收发时序。
  49. 根据权利要求41至48中任一项所述的方法,其特征在于,所述第一终端设备可使用的时频资源为预配置资源,所述第一终端设备可使用的收发时序为预配置时序,所述预配置时序包括所述第一收发时序、所述第二收发时序、所述静默监听时序。
  50. 根据权利要求41至49中任一项所述的方法,其特征在于,所述第一终端设备监听,包括:所述第一终端设备通过物理侧行链路共享信道PSSCH监听;
    所述第一终端设备向所述第二终端设备发送设备发现响应,包括:所述第一终端设备通过PSSCH向所述第二终端设备发送设备发现响应;
    时频资源包括毫米波段的频域资源。
  51. 一种设备发现装置,其特征在于,该装置包括:
    控制单元,用于控制通信单元在第一时间段内采用第一收发时序监听;
    还用于若第一终端设备在第一时间段内接收到来自第二终端设备的设备发现消息,第一终端设备根据设备发现消息,基于第一收发时序,控制通信单元向第二终端设备发送设备发现响应;
    还用于若第一终端设备在第一时间段内没有接收到来自第二终端设备的设备发现消息,且, 第一终端设备没有和其他终端设备建立连接,第一终端设备在第一时间段结束后,在第二时间段内,控制通信单元采用如下任一种收发时序监听:第一收发时序、第二收发时序、静默监听时序,其中第二收发时序与第一收发时序相反,静默监听时序用于第一终端设备持续监听。
  52. 根据权利要求51所述的装置,其特征在于,所述设备发现消息包括第一连接标识,和/或波束标识,和/或终端标识,和/或所述第二终端设备的收发时序的标识;
    其中,所述波束标识用于指示所述设备发现消息的发送方向。
  53. 根据权利要求52所述的装置,其特征在于,
    所述第一连接标识用于指示所述设备发现消息为所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应用于指示所述第一终端设备和所述第二终端设备之间建立连接。
  54. 根据权利要求52所述的装置,其特征在于,
    所述第一连接标识用于指示所述设备发现消息不是所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应包括第二连接标识,所述第二连接标识用于指示所述第一终端设备监听到来自所述第二终端设备的设备发现消息。
  55. 根据权利要求52至54中任一项所述的装置,其特征在于,控制单元,还用于根据波束标识,确定设备发现消息的发送方向,并基于第一收发时序,控制通信单元在发送方向向第二终端设备发送设备发现响应。
  56. 根据权利要求51至55中任一项所述的装置,其特征在于,所述收发时序用于指示发送波束和/或接收波束的规则、以及指示发送波束的方向和/或接收波束的方向。
  57. 根据权利要求51至56中任一项所述的装置,其特征在于,
    所述通信单元,还用于从接入网设备接收资源配置信息,资源配置信息用于指示第一终端设备可使用的时频资源和/或指示第一终端设备可使用的收发时序。
  58. 根据权利要求51至57中任一项所述的装置,其特征在于,
    所述通信单元,还用于向接入网设备发送资源请求,资源请求用于请求第一终端设备可使用的时频资源和/或请求第一终端设备可使用的收发时序。
  59. 根据权利要求51至56中任一项所述的装置,其特征在于,所述第一终端设备可使用的时频资源为预配置资源,所述第一终端设备可使用的收发时序为预配置时序,所述预配置时序包括所述第一收发时序、所述第二收发时序、所述静默监听时序。
  60. 根据权利要求51至57中任一项所述的装置,其特征在于,
    所述通信单元,还用于通过物理侧行链路共享信道PSSCH监听;通过PSSCH向第二终端设备发送设备发现响应。
  61. 根据权利要求57至60中任一项所述的装置,其特征在于,
    所述时频资源包括毫米波段的频域资源。
  62. 一种设备发现装置,其特征在于,该装置包括:
    通信单元,用于向第一终端设备发送设备发现消息;从第一终端设备接收设备发现响应,其中,所述设备发现消息包括第一连接标识,和/或波束标识,和/或终端标识,和/或第二终端设备的收发时序的标识。
  63. 根据权利要求62所述的装置,其特征在于,
    所述通信单元,还用于从接入网设备接收资源配置信息,资源配置信息用于指示第二终端设备可使用的时频资源和/或指示第二终端设备可使用的收发时序。
  64. 根据权利要求62所述的装置,其特征在于,
    所述通信单元,还用于向接入网设备发送资源请求,资源请求用于请求第二终端设备可使用的时频资源和/或请求第二终端设备可使用的收发时序。
  65. 根据权利要求62至64中任一项所述的装置,其特征在于,
    所述通信单元,还用于向第一终端设备发送设备发现消息,具体可以实现为:通过物理侧行链路共享信道PSSCH向第一终端设备发送设备发现消息。
  66. 根据权利要求62至65中任一项所述的装置,其特征在于,
    所述通信单元,还用于从第一终端设备接收设备发现响应,具体可以实现为:通过PSSCH从第一终端设备接收设备发现响应。
  67. 根据权利要求62至66中任一项所述的装置,其特征在于,
    波束标识用于指示设备发现消息的发送方向。
  68. 根据权利要求62至67中任一项所述的装置,其特征在于,
    所述第一连接标识用于指示所述设备发现消息为所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应用于指示所述第一终端设备和所述第二终端设备之间建立连接。
  69. 根据权利要求62至68中任一项所述的装置,其特征在于,
    所述第一连接标识用于指示所述设备发现消息不是所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应包括第二连接标识,所述第二连接标识用于指示所述第一终端设备监听到来自所述第二终端设备的设备发现消息。
  70. 根据权利要求62至69中任一项所述的装置,其特征在于,所述收发时序用于指示发送波束和/或接收波束的规则、以及指示发送波束的方向和/或接收波束的方向。
  71. 根据权利要求62至70中任一项所述的装置,其特征在于,所述第一终端设备可使用的时频资源为预配置资源,所述第一终端设备可使用的收发时序为预配置时序,所述预配置时序包括所述第一收发时序、所述第二收发时序、所述静默监听时序。
  72. 根据权利要求62至71中任一项所述的装置,其特征在于,时频资源包括毫米波段的频域资源。
  73. 一种设备发现装置,其特征在于,该装置包括:
    通信单元,用于从第一终端设备或第二终端设备接收资源请求,还用于发送资源配置信息;所述资源请求用于请求第一终端设备或第二终端设备可使用的时频资源,和/或请求第一终端设备或第二终端设备可使用的收发时序;所述资源配置信息用于指示第一终端设备或第二终端设备可使用的时频资源,和/或指示第一终端设备或第二终端设备可使用的收发时序。
  74. 一种设备发现装置,其特征在于,包括:
    通信单元,用于接收来自第二终端的第一设备发现消息,第一设备发现消息用于指示第二终 端所使用的收发时序;还用于根据第一设备发现消息,在第二终端的接收时序发送设备发现响应。
  75. 根据权利要求74所述的装置,其特征在于,还包括:
    控制单元,用于若在第一时序未监听到第一设备发现消息,则所述将收发时序由第一时序切换至第二时序,第一时序包括配置时序,或配置时序相反的时序,或静默时序,第二时序包括配置时序,或配置时序相反的时序,或静默时序,与配置时序相反的时序中的接收时序为配置时序中的发送时序,与配置时序相反的时序中的发送时序为配置时序中的接收时序。
  76. 根据权利要求74或75所述的装置,其特征在于,
    所述通信单元,还用于根据波束标识,确定设备发现响应的第二发送方向,第二发送方向与第一发送方向相反;在第二终端的接收时序、以第二发送方向向第二终端发送设备发现响应。
  77. 根据权利要求74至76中任一项所述的装置,其特征在于,
    所述通信单元,还用于向接入网设备发送资源请求,资源请求用于请求终端所使用的时频资源。
  78. 根据权利要求74至77中任一项所述的装置,其特征在于,所述通信单元,还用于从接入网设备接收资源配置消息,资源配置消息用于配置终端所使用的时频资源以及配置终端所使用的收发时序。
  79. 根据权利要求74至78中任一项所述的装置,其特征在于,
    所述通信单元,还用于通过物理侧行链路共享信道PSSCH接收第一设备发现消息。
  80. 根据权利要求74至79中任一项所述的装置,其特征在于,
    所述第一设备发现消息还包括波束标识,波束标识用于指示第一设备发现消息的第一发送方向。
  81. 根据权利要求74至80中任一项所述的装置,其特征在于,
    所述设备发现响应还包括用于指示第二发送方向的波束标识、终端的标识、终端的收发时序中的至少一项。
  82. 根据权利要求77所述的装置,其特征在于,
    所述时频资源包括毫米波段的频域资源。
  83. 一种设备发现装置,其特征在于,包括:
    通信单元,用于向第一终端发送第一设备发现消息,第一设备发现消息用于指示通信单元,用于所使用的收发时序;还用于在终端的接收时序从第一终端接收设备发现响应。
  84. 根据权利要求83所述的装置,其特征在于,
    所述通信单元,还用于通过PSSCH向第一终端发送第一设备发现消息。
  85. 根据权利要求84所述的装置,其特征在于
    所述通信单元,还用于在终端的接收时序,通过PSSCH从第一终端接收设备发现响应。
  86. 根据权利要求83至85中任一项所述的装置,其特征在于,
    所述第一设备发现消息还包括波束标识,波束标识用于指示第一设备发现消息的第一发送方向。
  87. 根据权利要求83至86中任一项所述的装置,其特征在于,
    所述设备发现响应还包括用于指示第二发送方向的波束标识、第一终端的标识、第一终端的收发时序中的至少一项。
  88. 一种设备发现装置,其特征在于,包括:
    通信单元,用于发送资源配置消息,资源配置消息用于配置第一终端所使用的时频资源以及配置第一终端所使用的收发时序。
  89. 根据权利要求88所述的装置,其特征在于,
    所述通信单元,还用于从第一终端设备接收资源请求,资源请求用于请求第一终端所使用的时频资源。
  90. 根据权利要求89所述的装置,其特征在于,
    所述时频资源包括毫米波段的频域资源。
  91. 一种通信设备,其特征在于,包括:
    处理器,用于控制通信接口在第一时间段内采用第一收发时序监听;
    还用于若第一终端设备在第一时间段内接收到来自第二终端设备的设备发现消息,第一终端设备根据设备发现消息,基于第一收发时序,控制通信接口向第二终端设备发送设备发现响应;
    还用于若第一终端设备在第一时间段内没有接收到来自第二终端设备的设备发现消息,且,第一终端设备没有和其他终端设备建立连接,第一终端设备在第一时间段结束后,在第二时间段内,控制通信接口采用如下任一种收发时序监听:第一收发时序、第二收发时序、静默监听时序,其中第二收发时序与第一收发时序相反,静默监听时序用于第一终端设备持续监听。
  92. 根据权利要求91所述的通信设备,其特征在于,
    所述设备发现消息包括第一连接标识,和/或波束标识,和/或终端标识,和/或所述第二终端设备的收发时序的标识;
    其中,所述波束标识用于指示所述设备发现消息的发送方向。
  93. 根据权利要求92所述的通信设备,其特征在于,
    所述第一连接标识用于指示所述设备发现消息为所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应用于指示所述第一终端设备和所述第二终端设备之间建立连接。
  94. 根据权利要求92所述的通信设备,其特征在于,
    所述第一连接标识用于指示所述设备发现消息不是所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应包括第二连接标识,所述第二连接标识用于指示所述第一终端设备监听到来自所述第二终端设备的设备发现消息。
  95. 根据权利要求92至94中任一项所述的通信设备,其特征在于,
    所述处理器,还用于根据波束标识,确定设备发现消息的发送方向,并基于第一收发时序,控制通信接口在发送方向向第二终端设备发送设备发现响应。
  96. 根据权利要求91至95中任一项所述的通信设备,其特征在于,所述收发时序用于指示发送波束和/或接收波束的规则、以及指示发送波束的方向和/或接收波束的方向。
  97. 根据权利要求91至96中任一项所述的通信设备,其特征在于,
    所述通信接口,还用于从接入网设备接收资源配置信息,资源配置信息用于指示第一终端设备可使用的时频资源和/或指示第一终端设备可使用的收发时序。
  98. 根据权利要求91至97中任一项所述的通信设备,其特征在于,
    所述通信接口,还用于向接入网设备发送资源请求,资源请求用于请求第一终端设备可使用的时频资源和/或请求第一终端设备可使用的收发时序。
  99. 根据权利要求91至96中任一项所述的通信设备,其特征在于,所述第一终端设备可使用的时频资源为预配置资源,所述第一终端设备可使用的收发时序为预配置时序,所述预配置时序包括所述第一收发时序、所述第二收发时序、所述静默监听时序。
  100. 根据权利要求91至97中任一项所述的通信设备,其特征在于,
    所述通信接口,还用于通过物理侧行链路共享信道PSSCH监听;通过PSSCH向第二终端设备发送设备发现响应。
  101. 根据权利要求97至100中任一项所述的通信设备,其特征在于,
    所述时频资源包括毫米波段的频域资源。
  102. 一种通信设备,其特征在于,包括:
    通信接口,用于向第一终端设备发送设备发现消息;从第一终端设备接收设备发现响应,其中,所述设备发现消息包括第一连接标识,和/或波束标识,和/或终端标识,和/或第二终端设备的收发时序的标识。
  103. 根据权利要求102所述的通信设备,其特征在于,
    所述通信接口,还用于从接入网设备接收资源配置信息,资源配置信息用于指示第二终端设备可使用的时频资源和/或指示第二终端设备可使用的收发时序。
  104. 根据权利要求102所述的通信设备,其特征在于,
    所述通信接口,还用于向接入网设备发送资源请求,资源请求用于请求第二终端设备可使用的时频资源和/或请求第二终端设备可使用的收发时序。
  105. 根据权利要求102至104中任一项所述的通信设备,其特征在于,
    所述通信接口,还用于向第一终端设备发送设备发现消息,具体可以实现为:通过物理侧行链路共享信道PSSCH向第一终端设备发送设备发现消息。
  106. 根据权利要求102至105中任一项所述的通信设备,其特征在于,
    所述通信接口,还用于从第一终端设备接收设备发现响应,具体可以实现为:通过PSSCH从第一终端设备接收设备发现响应。
  107. 根据权利要求102至106中任一项所述的通信设备,其特征在于,
    所述波束标识用于指示所述设备发现消息的发送方向。
  108. 根据权利要求102至107中任一项所述的通信设备,其特征在于,
    所述第一连接标识用于指示所述设备发现消息为所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应用于指示所述第一终端设备和所述第二终端设备之间建立连接。
  109. 根据权利要求102至108中任一项所述的通信设备,其特征在于,
    所述第一连接标识用于指示所述设备发现消息不是所述第二终端设备监听到来自所述第一终端设备的设备发现消息后,向所述第一终端设备发送的消息;
    所述设备发现响应包括第二连接标识,所述第二连接标识用于指示所述第一终端设备监听到来自所述第二终端设备的设备发现消息。
  110. 根据权利要求102至109中任一项所述的通信设备,其特征在于,所述收发时序用于指示发送波束和/或接收波束的规则、以及指示发送波束的方向和/或接收波束的方向。
  111. 根据权利要求102至110中任一项所述的通信设备,其特征在于,所述第一终端设备可使用的时频资源为预配置资源,所述第一终端设备可使用的收发时序为预配置时序,所述预配置时序包括所述第一收发时序、所述第二收发时序、所述静默监听时序。
  112. 根据权利要求102至111中任一项所述的通信设备,其特征在于,时频资源包括毫米波段的频域资源。
  113. 一种通信设备,其特征在于,该装置包括:
    通信接口,用于从第一终端设备或第二终端设备接收资源请求,还用于发送资源配置信息;所述资源请求用于请求第一终端设备或第二终端设备可使用的时频资源,和/或请求第一终端设备或第二终端设备可使用的收发时序;所述资源配置信息用于指示第一终端设备或第二终端设备可使用的时频资源,和/或指示第一终端设备或第二终端设备可使用的收发时序。
  114. 一种通信设备,其特征在于,包括:
    通信接口,用于接收来自第二终端的第一设备发现消息,第一设备发现消息用于指示第二终端所使用的收发时序;还用于根据第一设备发现消息,在第二终端的接收时序发送设备发现响应。
  115. 根据权利要求114所述的通信设备,其特征在于,还包括:
    处理器,用于若在第一时序未监听到第一设备发现消息,则所述将收发时序由第一时序切换至第二时序,第一时序包括配置时序,或配置时序相反的时序,或静默时序,第二时序包括配置时序,或配置时序相反的时序,或静默时序,与配置时序相反的时序中的接收时序为配置时序中的发送时序,与配置时序相反的时序中的发送时序为配置时序中的接收时序。
  116. 根据权利要求114或115所述的通信设备,其特征在于,
    所述通信接口,还用于根据波束标识,确定设备发现响应的第二发送方向,第二发送方向与第一发送方向相反;在第二终端的接收时序、以第二发送方向向第二终端发送设备发现响应。
  117. 根据权利要求114至116中任一项所述的通信设备,其特征在于,
    所述通信接口,还用于向接入网设备发送资源请求,资源请求用于请求终端所使用的时频资源。
  118. 根据权利要求114至117中任一项所述的通信设备,其特征在于,所述通信接口,还用于从接入网设备接收资源配置消息,资源配置消息用于配置终端所使用的时频资源以及配置终端所使用的收发时序。
  119. 根据权利要求114至118中任一项所述的通信设备,其特征在于,
    所述通信接口,还用于通过物理侧行链路共享信道PSSCH接收第一设备发现消息。
  120. 根据权利要求114至119中任一项所述的通信设备,其特征在于,
    所述第一设备发现消息还包括波束标识,波束标识用于指示第一设备发现消息的第一发送方向。
  121. 根据权利要求114至120中任一项所述的通信设备,其特征在于,
    所述设备发现响应还包括用于指示第二发送方向的波束标识、终端的标识、终端的收发时序中的至少一项。
  122. 根据权利要求117所述的通信设备,其特征在于,
    所述时频资源包括毫米波段的频域资源。
  123. 一种通信设备,其特征在于,包括:
    通信接口,用于向第一终端发送第一设备发现消息,第一设备发现消息用于指示通信接口,用于所使用的收发时序;还用于在终端的接收时序从第一终端接收设备发现响应。
  124. 根据权利要求123所述的通信设备,其特征在于,
    所述通信接口,还用于通过PSSCH向第一终端发送第一设备发现消息。
  125. 根据权利要求124所述的通信设备,其特征在于
    所述通信接口,还用于在终端的接收时序,通过PSSCH从第一终端接收设备发现响应。
  126. 根据权利要求123至125中任一项所述的通信设备,其特征在于,
    所述第一设备发现消息还包括波束标识,波束标识用于指示第一设备发现消息的第一发送方向。
  127. 根据权利要求123至126中任一项所述的通信设备,其特征在于,
    所述设备发现响应还包括用于指示第二发送方向的波束标识、第一终端的标识、第一终端的收发时序中的至少一项。
  128. 一种通信设备,其特征在于,包括:
    通信接口,用于发送资源配置消息,资源配置消息用于配置第一终端所使用的时频资源以及配置第一终端所使用的收发时序。
  129. 根据权利要求128所述的通信设备,其特征在于,
    所述通信接口,还用于从第一终端设备接收资源请求,资源请求用于请求第一终端所使用的时频资源。
  130. 根据权利要求129所述的通信设备,其特征在于,
    所述时频资源包括毫米波段的频域资源。
  131. 一种通信系统,所述系统包括第一终端设备和第二终端设备;
    第一终端设备在第一时间段内采用第一收发时序监听;
    第二终端设备向所述第一终端设备发送设备发现消息;
    若所述第一终端设备在第一时间段内接收到来自第二终端设备的设备发现消息,所述第一终端设备根据所述设备发现消息,基于所述第一收发时序,向所述第二终端设备发送设备发现响应;
    若所述第一终端设备在所述第一时间段内没有接收到来自第二终端设备的设备发现消息,且,所述第一终端设备没有和其他终端设备建立连接,所述第一终端设备在所述第一时间段结束后,在第二时间段内采用如下任一种收发时序监听:所述第一收发时序、第二收发时序、静默监听时序,其中所述第二收发时序与所述第一收发时序相反,所述静默监听时序用于所述第一终端设备持续监听。
  132. 根据权利要求131所述的通信系统,其特征在于,还包括接入网设备,
    所述接入网设备从第一终端设备或第二终端设备接收资源请求,所述资源请求用于请求第一终端设备或第二终端设备可使用的时频资源,和/或请求第一终端设备或第二终端设备可使用的收 发时序;向第一终端设备或第二终端设备发送资源配置信息,所述资源配置信息用于指示第一终端设备或第二终端设备可使用的时频资源,和/或指示第一终端设备或第二终端设备可使用的收发时序。
  133. 一种通信系统,所述系统包括第一终端设备和第二终端设备;
    第一终端接收来自第二终端的第一设备发现消息,第一设备发现消息用于指示第二终端所使用的收发时序;根据第一设备发现消息,在第二终端的接收时序发送设备发现响应;
    第二终端向第一终端发送第一设备发现消息,第一设备发现消息用于指示第二终端所使用的收发时序;在第二终端的接收时序从第一终端接收设备发现响应。
  134. 根据权利要求133所述的通信系统,其特征在于,还包括接入网设备,
    接入网设备发送资源配置消息,资源配置消息用于配置第一终端所使用的时频资源以及配置第一终端所使用的收发时序。
  135. 一种通信设备,其特征在于,包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,其特征在于,所述处理器执行所述程序时,实现如权利要求1至11中任一项所述的方法,或实现如权利要求12至22中任一项所述的方法,或实现如权利要求23所述的方法,或实现如权利要求24至32中任一项所述的方法,或实现如权利要求33至37中任一项所述的方法,或实现如权利要求38至40中任一项所述的方法。
  136. 一种装置,其特征在于,所述装置包括处理器,所述处理器用于与存储器耦合,并读取存储器中的指令并根据所述指令执行如权利要求1至11中任一项所述的方法,或根据所述指令执行如权利要求12至22中任一项所述的方法,或根据所述指令执行如权利要求23任一项所述的方法,或根据所述指令执行如权利要求24至32中任一项所述的方法,或根据所述指令执行如权利要求33至37中任一项所述的方法,或根据所述指令执行如权利要求38至40中任一项所述的方法。
  137. 一种计算机可读存储介质,其特征在于,包括指令,当其在计算机上运行时,使得计算机执行如权利要求1至11中任一项所述的方法,或执行如权利要求12至22中任一项所述的方法,或执行如权利要求23任一项所述的方法,或执行如权利要求24至32中任一项所述的方法,或执行如权利要求33至37中任一项所述的方法,或执行如权利要求38至40中任一项所述的方法。
  138. 一种计算机程序产品,其特征在于,当其在计算机上运行时,使得计算机执行如权利要求1至11中任一项所述的方法,或使得计算机执行如权利要求12至22中任一项所述的方法,或使得计算机执行如权利要求23任一项所述的方法,或使得计算机执行如权利要求24至32中任一项所述的方法,或使得计算机执行如权利要求33至37中任一项所述的方法,或使得计算机执行如权利要求38至40中任一项所述的方法。
  139. 一种芯片,其特征在于,与存储器相连或者包括存储器,用于读取并执行所述存储器中存储的软件程序,以实现如权利要求1至11中任一项所述的方法,或以实现如权利要求12至22中任一项所述的方法,或以实现如权利要求23任一项所述的方法,或以实现如权利要求24至32中任一项所述的方法,或以实现如权利要求33至37中任一项所述的方法,或以实现如权利要求38至40中任一项所述的方法。
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