WO2022032536A1 - Procédé de communication et appareil de communication - Google Patents

Procédé de communication et appareil de communication Download PDF

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Publication number
WO2022032536A1
WO2022032536A1 PCT/CN2020/108734 CN2020108734W WO2022032536A1 WO 2022032536 A1 WO2022032536 A1 WO 2022032536A1 CN 2020108734 W CN2020108734 W CN 2020108734W WO 2022032536 A1 WO2022032536 A1 WO 2022032536A1
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WIPO (PCT)
Prior art keywords
terminal device
mode
information
message
terminal
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PCT/CN2020/108734
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English (en)
Chinese (zh)
Inventor
应江威
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华为技术有限公司
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Priority to PCT/CN2020/108734 priority Critical patent/WO2022032536A1/fr
Publication of WO2022032536A1 publication Critical patent/WO2022032536A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication, and in particular, to a communication method and a communication device.
  • vehicle-to-vehicle communication includes three different types: vehicle-to-vehicle (V2V), vehicle-to-roadside equipment/network infrastructure (vehicle-to- infrastructure/vehicle-to-network, V2I/V2N), and vehicle-to-pedestrian (V2P) communication, collectively referred to as vehicle-to-everything (V2X).
  • V2X is a new generation of information and communication technology that connects vehicles with everything, where V represents the vehicle and X represents any object that interacts with the vehicle, such as vehicles, people, traffic roadside infrastructure and networks.
  • V2X communication includes various modes, including unicast (unicast), multicast (groupcast), and broadcast (broadcast).
  • terminal equipment such as UE
  • terminal equipment is always in the state of sending and receiving mode and starting at the same time (that is, always monitoring messages from other devices and always sending V2X messages), which will cause unnecessary V2X message transmission, resulting in power consumption. Therefore, more energy-efficient multicast and/or broadcast communication schemes need to be studied.
  • Embodiments of the present application provide a communication method and a communication apparatus, which can reduce power consumption caused by terminal equipment transmitting V2X messages.
  • an embodiment of the present application provides a communication method, the method includes: a first terminal device receives information from at least one second terminal device; the first terminal device receives information from at least one second terminal device; information, and determine the first transceiver mode of the first terminal device; the first transceiver mode is a no-transmit and no-receive mode, or a transmit-and-no-receive mode, or a receive-no-transmit mode, or a low-frequency transmit and receive mode , or a high-frequency sending and receiving mode; wherein, the first transceiver mode is used for the first terminal device to transmit a vehicle-to-everything V2X message.
  • transmission includes sending and/or receiving.
  • the transmission of the V2X message may be sending a V2X message, or receiving a V2X message, or both sending a V2X message and receiving a V2X message.
  • the first terminal device may support multiple transceiver modes for transmitting V2X messages with different power consumption.
  • the first terminal device determines a transceiving mode of the first terminal device according to the information from the at least one second terminal device. It should be understood that the sending and receiving mode of the V2X message transmitted by the first terminal device is not fixed, but can be dynamically adjusted.
  • the first terminal device may dynamically adjust the sending and receiving mode for transmitting the V2X message according to the information from the at least one second terminal device, so as to achieve the purpose of energy saving in communication.
  • the first terminal device may switch between a plurality of transceiving modes for transmitting V2X messages with different power consumption according to the information from the at least one second terminal device. For example, the first terminal device currently transmits the V2X message in a transmission-only and no-reception mode; after determining the low-frequency transmission and reception mode according to the information from the at least one second terminal device, transmits the V2X message in the low-frequency transmission and reception mode V2X messages.
  • the first terminal device dynamically adjusts the sending and receiving mode for transmitting the V2X message according to the information from at least one second terminal device, which can realize communication energy saving.
  • the method further includes: the first terminal device uses the first transceiving mode to transmit V2X messages.
  • the first terminal device supports at least two transceiving modes for transmitting V2X messages with different power consumption; the first terminal device determines, according to information from the at least one second terminal device, the The first transceiver mode of the first terminal device includes: the first terminal device determines, according to the information from the at least one second terminal device and the support capability of the first terminal device, all the Describe the first transceiver mode.
  • the support capability of the first terminal device includes the capability to support at least two transceiver modes for transmitting V2X messages with different power consumption.
  • the first terminal device selects an appropriate transceiving mode among multiple transceiving modes with different power consumption according to the information from at least one second terminal device and the support capability of the first terminal device to transmit V2X messages, thereby reducing power consumption while ensuring the traffic safety of pedestrians and vehicles.
  • the method before the first terminal device receives the information from at least one second terminal device, the method further includes: the first terminal device sends a discovery request through broadcast or multicast;
  • the receiving, by the first terminal device, information from at least one second terminal device includes: the first terminal device receiving, by the first terminal device, feedback information for the discovery request from the at least one second terminal device, the information from the at least one second terminal device being received by the first terminal device.
  • the information of the second terminal device includes the feedback information for the discovery request from the at least one second terminal device.
  • the surrounding environment can be quickly sensed and an appropriate sending and receiving mode can be selected, thereby achieving the effect of energy saving.
  • the discovery request carries at least one of the following information: a first terminal type, a first service type, a first communication type, and location information of the first terminal device; wherein the The first terminal type is the terminal type of the terminal device that the first terminal device requests to discover, the first service type is the service type of the V2X message to be transmitted by the first terminal device, and the first communication type is the The communication type to be used by the first terminal device to transmit the V2X message, such as broadcast or multicast.
  • the information required for determining the sending and receiving mode for transmitting the V2X message can be obtained in a targeted manner.
  • the method further includes: the first terminal device sends the first V2X message by broadcasting or multicasting ; the first terminal device receiving information from at least one second terminal device includes: the first terminal device receiving feedback information for the first V2X message from the at least one second terminal device, the The information of the at least one second terminal device includes the feedback information for the first V2X message from the at least one second terminal device.
  • the first V2X message may be a V2X message corresponding to any ongoing V2X service on the first terminal device.
  • the receiving, by the first terminal device, the information from at least one second terminal device includes: the first terminal device receiving information from the at least one second terminal device through broadcast and/or multicast. Information.
  • the first terminal device can receive information of other terminal devices through broadcast and/or multicast, that is, obtain surrounding environment information, and then dynamically adjust the transceiver mode.
  • the determining, by the first terminal device, according to information from the at least one second terminal device, the first transceiving mode of the first terminal device includes: The information of the at least one second terminal device is used to determine the number of the at least one second terminal device; the first transceiving mode of the first terminal device is determined according to the number of the at least one second terminal device.
  • the number of at least one second terminal device can more accurately reflect the surrounding traffic conditions. It should be understood that the more the number of second terminal devices, the more complex the traffic environment (higher degree of danger), and the need to use a transceiver mode with higher power consumption to ensure traffic safety; the less the number of second terminal devices, the simpler the traffic environment ( low risk), the use of low-power transceiver modes can ensure traffic safety.
  • the transceiver mode for transmitting V2X messages is determined according to the number of at least one second terminal device; the power consumption can be minimized while ensuring the traffic safety of pedestrians and vehicles.
  • the distance between any one of the at least one second terminal device and the first terminal device is less than a distance threshold.
  • the number of surrounding terminal devices can be determined accurately and quickly, so as to select an appropriate sending and receiving mode, so as to achieve the effect of energy saving.
  • the information of any one terminal device includes location information of the any one terminal device.
  • the first terminal device can determine the distance with any terminal device according to the information of any terminal device, and then select an appropriate sending and receiving mode.
  • the determining the first transceiving mode of the first terminal device according to the number of the at least one second terminal device includes: when the number of the at least one second terminal device is small In the case of a first number threshold, the first terminal device determines that the first transceiving mode is the low-frequency transmission and reception mode; or when the number of the at least one second terminal device is less than the second number threshold In the case where the first terminal device determines that the first transceiving mode is the sending-only and no-receiving mode or the only-receiving and no-sending mode, the second quantity threshold is smaller than the first quantity threshold; or, In the case that the number of the at least one second terminal device is less than a third number threshold, the first terminal device determines that the first transceiving mode is the non-transmitting and non-receiving mode, and the third number threshold is less than the second quantity threshold; or, when the quantity of the at least one second terminal device is not less than the first quantity threshold, the first terminal device determine
  • the determining, by the first terminal device, according to information from the at least one second terminal device, the first transceiving mode of the first terminal device includes: The quantity of feedback information of the at least one second terminal device is used to determine the first transceiving mode of the first terminal device.
  • the quantity of feedback information from at least one second terminal device can more accurately reflect the surrounding traffic situation. It should be understood that the greater the number of feedback information from the at least one second terminal device, the more complicated the traffic environment (higher degree of danger), and the need to adopt a transceiver mode with higher power consumption to ensure traffic safety; The smaller the amount of feedback information, the simpler the traffic environment (lower the danger level), and the traffic safety can be ensured by adopting the transceiver mode with lower power consumption.
  • the transceiver mode for transmitting V2X messages is determined according to the quantity of feedback information from at least one second terminal device; the power consumption can be minimized while ensuring the traffic safety of pedestrians and vehicles.
  • the distance between any one of the at least one second terminal device and the first terminal device is less than a distance threshold.
  • the quantity of valid feedback information can be determined accurately and quickly, so as to select an appropriate sending and receiving mode, so as to achieve the effect of energy saving.
  • the feedback information of any one terminal device includes location information of the any one terminal device.
  • the first terminal device may determine the distance with any terminal device according to feedback information of any terminal device, and then select an appropriate sending and receiving mode.
  • the feedback information of the at least one second terminal device includes location information of each second terminal device; before determining the first transceiving mode, the method further includes: the first terminal The device, according to the location information of each second terminal device and the location information of the first terminal device, determines the terminal device whose distance from the at least one second terminal device and the first terminal device is less than the distance threshold The number is taken as the number of feedback information from the at least one second terminal device.
  • the quantity of valid feedback information can be determined accurately and quickly, so as to select an appropriate sending and receiving mode, so as to achieve the effect of energy saving.
  • the method before determining the first transceiving mode, further includes: determining, by the first terminal device, a distance with each second terminal device in the at least one second terminal device , taking the number of terminal devices whose distance from the at least one second terminal device and the first terminal device is smaller than the distance threshold as the number of feedback information from the at least one second terminal device.
  • the first terminal device determines the distance to each of the at least one second terminal device through vehicle-mounted radar or a positioning system (eg Beidou satellite navigation system).
  • vehicle-mounted radar or a positioning system (eg Beidou satellite navigation system).
  • the quantity of valid feedback information can be determined accurately and quickly, so as to select an appropriate sending and receiving mode, so as to achieve the effect of energy saving.
  • the first terminal device determining the first transceiving mode of the first terminal device according to the quantity of feedback information from the at least one second terminal device includes: In the case where the quantity of feedback information from at least one second terminal device is less than the first quantity threshold, the first terminal device determines that the first transceiving mode is the low-frequency sending and receiving mode; or In the case that the quantity of feedback information of a second terminal device is less than the second quantity threshold, the first terminal device determines that the first transceiving mode is the sending-only mode without receiving or the receiving-only mode without sending, The second quantity threshold is less than the first quantity threshold; or, in the case that the quantity of feedback information from the at least one second terminal device is less than a third quantity threshold, the first terminal device determines that the The first sending and receiving mode is the no-sending and no-receiving mode, and the third quantity threshold is smaller than the second quantity threshold; or, the quantity of feedback information from the at least one second terminal device is not less than the first quantity. In the case of the quantity of feedback information from at
  • the first transceiving mode is determined by the V2X layer of the first terminal device, and the method further includes: sending the V2X layer of the first terminal device to the first terminal device
  • the V2X application layer of the first terminal device notifies the first sending and receiving mode, and the V2X application layer performs the sending and receiving settings of the V2X message according to the first sending and receiving mode; and/or, the V2X layer of the first terminal device reports to the first terminal
  • the V2X access layer of the device notifies the first transceiver mode, and the V2X access layer performs V2X message transceiver settings according to the first transceiver mode.
  • the first transceiving mode is determined by the V2X access layer of the first terminal device; the method further includes: sending the V2X access layer to the first terminal device
  • the V2X application layer notifies the first transceiving mode, and the V2X application layer performs the transceiving setting of the V2X message according to the first transceiving mode.
  • the V2X access layer may directly notify the V2X application layer of the first terminal device of the first transceiving mode, or the V2X access layer may indirectly notify the first transceiving mode through the V2X layer.
  • a V2X application layer of a terminal device notifies the first transceiving mode.
  • the method further includes: after the first transceiving mode fails, the first terminal device transmits the V2X message by using the second transceiving mode
  • the second transceiving mode is the no-transmit and no-receive mode, or the only-transmit-no-receive mode, or the only-receive-no-transmit mode, or the low-frequency transmit-and-receive mode, or the high-frequency transmit-and-receive mode. receive mode.
  • the first terminal device determines the failure time of the first transceiving mode.
  • the failure moment may be a time moment, that is, the first transceiving mode is invalid at a certain time moment; it may also be a timer duration, that is, the first transceiving mode is invalid when the timer expires.
  • the failure of the first transceiving mode means that the first transceiving mode currently adopted by the first terminal device needs to be updated (or switched).
  • the first terminal device determines that the first transceiving mode is invalid.
  • the first terminal device determines that the first transceiving mode is invalid.
  • the target event may be an event of urgently transmitting a V2X message, an abnormal event, or other events, which are not limited in this application. That is, certain events can trigger the failure of the first transceiving mode. It should be understood that the surrounding environment of the first terminal device does not always remain unchanged, so the first terminal device needs to adjust the mode of transmitting the V2X message in time.
  • the first terminal device can adjust the mode of transmitting the V2X message in time, so as to realize communication energy saving under the condition of ensuring safety.
  • an embodiment of the present application provides another communication method, the method includes: a second terminal device receives a discovery request; the second terminal device sends feedback information for the discovery request, where the feedback information is used for all
  • the first terminal device determines a first transceiving mode, and the first transceiving mode is a no-transmit and no-receive mode, or a transmit-no-receive mode, or a receive-no-transmit mode, or a low-frequency sending and receiving mode, or a high-frequency sending and a receiving mode; wherein, the first transceiving mode is used for the first terminal device to transmit a vehicle-to-everything V2X message.
  • the second terminal device sends feedback information for the discovery request, so that the first terminal device determines a mode for transmitting V2X messages according to the feedback information, thereby achieving communication energy saving.
  • the discovery request carries at least one of the following information: a first terminal type, a first service type, a first communication type, and location information of the first terminal device; wherein the The first terminal type is the terminal type of the terminal device that the first terminal device requests to discover, the first service type is the service type of the V2X message to be transmitted by the first terminal device, and the first communication type is the the communication type to be used by the first terminal device to transmit the V2X message; the sending of the feedback information by the second terminal device for the discovery request includes: in the case that the first matching condition is satisfied, the second terminal device responds to the A discovery request sends the feedback information; wherein the first matching condition includes at least one of the following: the terminal type of the second terminal device belongs to the first terminal type, and the second terminal device accepts the first Service type, the second terminal device accepts the first communication type, or the distance between the second terminal device and the first terminal device is less than a distance threshold.
  • Accepting the first service type by the second terminal device may be understood as the second terminal device is interested in the first service type or supports the first service type, and the second terminal device accepts the first communication
  • the type can be understood as the second terminal device is interested in the first communication type or the second terminal device supports the first communication type.
  • the second terminal device when the first matching condition is satisfied, sends feedback information for the discovery request, which can not only reduce its own data transmission, but also reduce the processing amount of the first terminal device.
  • the feedback information carries the location information of the second terminal device.
  • the feedback information carries the location information of the second terminal device, so that the first terminal device can determine the distance from the second terminal device.
  • an embodiment of the present application provides another communication method.
  • the method includes: a first terminal device sends a first message to a first configuration network element, where the first message is used to obtain the information of the first terminal device. sending and receiving mode; the first terminal device receives a response to the first message from the first configuration network element, and the response to the first message carries the information of the third sending and receiving mode; the first terminal device adopts the
  • the third transceiver mode is to transmit V2X messages; the third transceiver mode is a no-send and no-receive mode, or only a transmit-no-receive mode, or a receive-no-send mode, or a low-frequency sending and receiving mode, or a high-frequency sending and receiving mode. receive mode.
  • the first terminal device dynamically adjusts the sending and receiving mode for transmitting the V2X message, which can achieve communication energy saving.
  • the first message carries at least one of the following information: a second terminal type, a second service type, a second communication type, and location information of the first terminal device;
  • the second terminal type is the terminal type of the terminal device that the first terminal device requests to discover, the second service type is the service type of the V2X message to be transmitted by the first terminal device, and the second communication type is The communication type to be used by the first terminal device to transmit the V2X message.
  • the information carried in the first message may be understood as the information required for determining the sending and receiving mode to be adopted by the first terminal device.
  • the first information carries at least one of the second terminal type, the second service type, the second communication type, and the location information of the first terminal device, which enables other devices to determine more quickly and accurately The sending and receiving mode to be adopted by the first terminal device.
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure moment of the third transceiving mode.
  • the failure moment may be a time moment, that is, the first transceiving mode is invalid at a certain time moment.
  • the first time information is a timer or an effective time.
  • the timer is used to indicate the duration of the first transceiving mode
  • the effective time is used to indicate the effective cut-off time of the first transceiving mode.
  • the first terminal device may determine the failure time of the third transceiving mode according to the first time information, and then adjust the mode of transmitting the V2X message in time.
  • the method further includes: the first terminal device After the first time information determines that the third transceiving mode is invalid, a fourth transceiving mode is used to transmit the V2X message, and the fourth transceiving mode is the no-sending and no-receiving mode, or the only sending and not receiving mode, or the A receive-only and no-transmit mode, or the low-frequency transmit and receive mode, or the high-frequency transmit and receive mode.
  • the first terminal device can adjust the mode of transmitting V2X messages in time, so as to realize communication energy saving while ensuring the traffic safety of pedestrians and vehicles.
  • an embodiment of the present application provides another communication method.
  • the method includes: a first configuration network element receives a first message, where the first message is used to acquire a sending and receiving mode of a first terminal device; the first The network element is configured to send a response to the first message, where the response to the first message carries information of the third transceiving mode.
  • the third transceiving mode is a no-transmit and no-receive mode, or a transmit-no-receive mode, or a receive-no-transmit mode, a low-frequency transmit-and-receive mode, or a high-frequency transmit-and-receive mode.
  • the first configuration network element may enable the first terminal device to adjust the sending and receiving mode for transmitting the V2X message by sending a response to the first message, so as to reduce power consumption of the first terminal device.
  • the method further includes: the first configuration network element sends a second message to a second configuration network element, where the second message is used to acquire the sending and receiving mode of the first terminal device; The first configuration network element receives a response to the second message from the second configuration network element, where the response to the second message carries information of the third transceiving mode.
  • the first configuration network element determines the transceiving mode of the first terminal device by means of the second configuration network element, so as to respond to the first message from the first terminal device.
  • the second message carries at least one of the following information: a second terminal type, a second service type, a second communication type, location information of the first terminal device, the first An identifier of a terminal device; wherein the second terminal type is the terminal type of the terminal device that the first terminal device requests to discover, and the second service type is the service of the V2X message to be transmitted by the first terminal device type, the second communication type is the communication type to be used by the first terminal device to transmit the V2X message.
  • the second message carries at least one of the second terminal type, the second service type, the second communication type, and the identifier of the first terminal device, so that the second configuration network element can configure the network element according to the second message. , to more quickly and accurately determine the sending and receiving mode to be adopted by the first terminal device.
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure moment of the third transceiving mode.
  • the failure moment may be a time moment, that is, the first transceiving mode is invalid at a certain time moment.
  • the first time information is a timer or an effective time.
  • the timer is used to indicate the duration of the first transceiving mode
  • the effective time is used to indicate the effective cut-off time of the first transceiving mode.
  • the response of the first message carries the first time information, so that the first terminal device can determine the failure time of the third transceiving mode according to the response of the first message, and then adjust the mode of transmitting the V2X message in time.
  • the method further includes: the first configuration network element determines, according to the number of fourth terminal devices that satisfy the third matching condition corresponding to the second information, the number of the first terminal device. the third transceiving mode; wherein the third matching condition satisfied by any fourth terminal device includes at least one of the following: the terminal type of the any fourth terminal device belongs to the second terminal type, the Any fourth terminal device accepts the second service type, any fourth terminal device accepts the second communication type, or the distance between the any fourth terminal device and the first terminal device less than the distance threshold.
  • the first configuration network element determines the third transceiving mode of the first terminal device according to the number of fourth terminal devices that satisfy the third matching condition corresponding to the second information Including: when the number of fourth terminal devices that satisfy the third matching condition corresponding to the second information is less than a fourth number threshold, determining, by the first configuration network element, that the third transceiving mode is the low frequency transmission and reception mode; or when the number of fourth terminal devices that satisfy the third matching condition corresponding to the second information is less than the fifth number threshold, the first configuration network element determines the third transceiver The mode is the only sending and not receiving mode or the only receiving and not sending mode, and the fifth quantity threshold is smaller than the fourth quantity threshold; or, in the fourth condition that satisfies the third matching condition corresponding to the second information In the case where the number of terminal devices is less than a sixth number threshold, the first configuration network element determines that the third transceiving mode is the non-transmitting and non-receiving mode, and the sixth number threshold is less
  • the method further includes: determining, by the first configuration network element, the third transceiving mode to be adopted by the first terminal device according to peripheral information of the first terminal device.
  • the first configuration network element can perceive the environment around the first terminal device and select an appropriate transmission and reception mode for the first terminal device, thereby achieving an energy saving effect.
  • an embodiment of the present application provides another communication method.
  • the method includes: a second configuration network element receives a second message, where the second message is used to obtain a sending and receiving mode of the first terminal device; the second The network element is configured to send a response to the second message, where the response to the second message carries information of the third transceiving mode.
  • the third transceiving mode is a no-transmit and no-receive mode, or a transmit-no-receive mode, or a receive-no-transmit mode, a low-frequency transmit-and-receive mode, or a high-frequency transmit-and-receive mode.
  • the second configuration network element sends a response to the second message, so that the first terminal device transmits the V2X message using a more appropriate transceiving mode, thereby reducing power consumption of the first terminal device.
  • the second message carries at least one of the following information: a second terminal type, a second service type, a second communication type, location information of the first terminal device, the first An identifier of a terminal device; wherein the second terminal type is the terminal type of the terminal device that the first terminal device requests to discover, and the second service type is the service of the V2X message to be transmitted by the first terminal device type, the second communication type is the communication type to be used by the first terminal device to transmit the V2X message.
  • the method further includes: the second configuration network element determines, according to the number of third terminal devices that satisfy the second matching condition corresponding to the second information, the number of the first terminal device. the third transceiving mode; wherein the second matching condition satisfied by any third terminal device includes at least one of the following: the terminal type of the any third terminal device belongs to the second terminal type, the Any third terminal device accepts the second service type, any third terminal device accepts the second communication type, or the distance between the any third terminal device and the first terminal device less than the distance threshold.
  • the third terminal device that satisfies the second matching condition corresponding to the second information may be understood as a terminal device requested by the first terminal device to be discovered, that is, a terminal device that affects the sending and receiving mode adopted by the first terminal device.
  • the sending and receiving mode of the first terminal device is determined according to the number of third terminal devices that satisfy the second matching condition corresponding to the second information, so that the first terminal device can ensure the traffic safety of pedestrians and vehicles in the case of to achieve communication energy saving.
  • the second configuration network element determines the third transceiving mode of the first terminal device according to the number of third terminal devices that satisfy the second matching condition corresponding to the second information Including: when the number of third terminal devices that satisfy the second matching condition corresponding to the second information is less than a fourth number threshold, determining, by the second configuration network element, that the third transceiving mode is the low frequency transmission and reception mode; or when the number of third terminal devices that satisfy the second matching condition corresponding to the second information is less than the fifth number threshold, the second configuration network element determines the third transceiver The mode is the only sending and not receiving mode or the only receiving and not sending mode, and the fifth quantity threshold is smaller than the fourth quantity threshold; In the case where the number of terminal devices is less than the sixth number threshold, the second configuration network element determines that the third transceiving mode is the non-transmitting and non-receiving mode, and the sixth number threshold is less than the fifth number threshold ; or, when the number of third terminal devices that satisfy the second matching condition
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure moment of the third transceiving mode.
  • the method further includes: determining, by the second configuration network element, the third transceiving mode to be adopted by the first terminal device according to peripheral information of the first terminal device.
  • the second configuration network element can perceive the surrounding environment of the first terminal device and select an appropriate transceiving mode for the first terminal device, thereby achieving an energy saving effect.
  • the second configuration network element determines the third transceiving mode of the first terminal device according to the number of third terminal devices that satisfy the second matching condition corresponding to the second information before, the method further includes: the second configuration network element counts the number of third terminal devices that satisfy the second matching condition corresponding to the second information.
  • the second configuration network element determining, according to peripheral information of the first terminal device, the third transceiving mode to be adopted by the first terminal device includes: the second configuration network element The element determines the third transceiving mode to be adopted by the first terminal device according to the current location of the first terminal device and the surrounding environment information of the first terminal device.
  • the first terminal device For example, if the first terminal device is at an intersection, it belongs to a high-risk area, and both sends and receives V2X messages; if the first terminal device is inside a building or away from the road, it may not send or receive V2X messages.
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure moment of the third transceiving mode.
  • an embodiment of the present application provides a terminal device, including: a transceiver module for receiving information from at least one second terminal device; a processing module for receiving information from the at least one second terminal device according to the information from the at least one second terminal device , determine the first transceiving mode of the first terminal device; the first transceiving mode is a no-transmit and no-receive mode, or a transmit-no-receive mode, or a receive-no-transmit mode, or a low-frequency transmit and receive mode, or High-frequency sending and receiving mode; wherein, the first sending and receiving mode is used for the first terminal device to transmit the vehicle-to-everything V2X message.
  • the transceiver module is further configured to use the first transceiver mode to transmit V2X messages.
  • the first terminal device supports at least two transceiver modes for transmitting V2X messages with different power consumption; the processing module is specifically configured to, according to the information from the at least one second terminal device and The support capability of the first terminal device determines the first transceiving mode of the first terminal device.
  • the transceiver module is further configured to send a discovery request in a broadcast or multicast manner, where the discovery request is used to obtain information required by the first terminal device to determine a transceiver mode for transmitting V2X messages ; the transceiver module is specifically configured to receive feedback information sent by the at least one second terminal device for the discovery request, and the information from the at least one second terminal device includes the information from the at least one second terminal device Feedback information of the two terminal devices for the discovery request.
  • the discovery request carries at least one of the following information: a first terminal type, a first service type, a first communication type, and location information of the first terminal device; wherein the The first terminal type is the terminal type of the terminal device that the first terminal device requests to discover, the first service type is the service type of the V2X message to be transmitted by the first terminal device, and the first communication type is the Describe the communication type to be used by the first terminal device to transmit the V2X message.
  • the transceiver module is further configured to send the first V2X message through broadcast or multicast; the transceiver module is specifically configured for the first terminal device to receive data from the at least one second V2X message.
  • feedback information of the terminal device for the first V2X message, the information from the at least one second terminal device includes the feedback information for the first V2X message from the at least one second terminal device .
  • the first V2X message may be a V2X message corresponding to any ongoing V2X service on the first terminal device.
  • the transceiver module is further configured to receive information from the at least one second terminal device through broadcast and/or multicast.
  • the processing module is specifically configured to determine the number of the at least one second terminal device according to the information from the at least one second terminal device; according to the at least one second terminal device The number of , determines the first transceiving mode of the first terminal device.
  • the distance between any one of the at least one second terminal device and the first terminal device is less than a distance threshold.
  • the information of any one terminal device includes location information of the any one terminal device.
  • the processing module is specifically configured to determine, by the first terminal device, the first transceiving mode when the number of the at least one second terminal device is less than a first number threshold is the low-frequency transmission and reception mode; or in the case that the number of the at least one second terminal device is less than the second number threshold, the first terminal device determines that the first transceiving mode is the transmission-only mode In the no-receive mode or the only-receive-no-send mode, the second quantity threshold is less than the first quantity threshold; or, in the case that the quantity of the at least one second terminal device is less than the third quantity threshold, the The first terminal device determines that the first transceiving mode is the non-transmitting and non-receiving mode, and the third number threshold is smaller than the second number threshold; or, the number of the at least one second terminal device is not large In the case of the first quantity threshold, the first terminal device determines that the first transceiving mode is the high-frequency transmission and reception mode.
  • the processing module is specifically configured to determine, by the first terminal device, the first terminal device of the first terminal device according to the quantity of feedback information from the at least one second terminal device Transceiver mode.
  • the distance between any one of the at least one second terminal device and the first terminal device is less than a distance threshold.
  • the feedback information of any one terminal device includes location information of the any one terminal device.
  • the feedback information of the at least one second terminal device includes location information of each second terminal device; the processing module is further configured to, according to the location information of each second terminal device and the location information of each second terminal device The location information of the first terminal device, and the number of terminal devices whose distance from the at least one second terminal device and the first terminal device is less than the distance threshold is used as the feedback from the at least one second terminal device. amount of information.
  • the processing module is further configured to determine a distance from each second terminal device in the at least one second terminal device, and compare the at least one second terminal device with the at least one second terminal device.
  • the number of terminal devices whose distance between the first terminal devices is smaller than the distance threshold is taken as the number of feedback information from the at least one second terminal device.
  • the processing module is specifically configured to, when the quantity of feedback information from the at least one second terminal device is less than a first quantity threshold, determine, by the first terminal device, the The first transceiving mode is the low-frequency sending and receiving mode; or when the quantity of feedback information from the at least one second terminal device is less than a second quantity threshold, the first terminal device determines that the first A transceiving mode is the only sending and not receiving mode or the only receiving and not sending mode, and the second quantity threshold is smaller than the first quantity threshold; or, when the feedback information from the at least one second terminal device In the case where the number is less than a third number threshold, the first terminal device determines that the first transceiving mode is the non-transmitting and non-receiving mode, and the third number threshold is less than the second number threshold; or, in When the quantity of feedback information from the at least one second terminal device is not less than the first quantity threshold, the first terminal device determines that the first transceiving mode is the high-frequency sending and receiving mode.
  • the first transceiving mode is determined by the V2X layer of the first terminal device, and the method further includes: sending the V2X layer of the first terminal device to the first terminal device
  • the V2X application layer of the first terminal device notifies the first sending and receiving mode, and the V2X application layer performs the sending and receiving settings of V2X messages according to the first sending and receiving mode; and/or, the V2X layer of the first terminal device reports to the first terminal
  • the V2X access layer of the device notifies the first transceiver mode, and the V2X access layer performs V2X message transceiver settings according to the first transceiver mode.
  • the first sending and receiving mode is determined by the V2X access layer of the first terminal device; the processing module is further configured to send and receive V2X messages according to the first sending and receiving mode set up.
  • the transceiver module is further configured to transmit the V2X message by the first terminal device using a second transceiver mode after the first transceiver mode fails, and the second transceiver mode is the No transmit no receive mode, or the transmit only no receive mode, or the receive only no transmit mode, or the low frequency transmit and receive mode, or the high frequency transmit and receive mode.
  • an embodiment of the present application provides another terminal device, including: a transceiver module for receiving a discovery request; a processing module for generating feedback information for the discovery request, where the feedback information is used for the The first terminal device determines a first transceiving mode, and the first transceiving mode is a no-transmit and no-receive mode, or a transmit-no-receive mode, or a receive-no-transmit mode, or a low-frequency sending and receiving mode, or a high-frequency sending and receiving mode.
  • a receiving mode wherein, the first transceiver mode is used for the first terminal device to transmit a vehicle-to-everything V2X message; the transceiver module is also used for sending the feedback information.
  • the discovery request carries at least one of the following information: a first terminal type, a first service type, a first communication type, and location information of the first terminal device; wherein the The first terminal type is the terminal type of the terminal device that the first terminal device requests to discover, the first service type is the service type of the V2X message to be transmitted by the first terminal device, and the first communication type is the the communication type to be used by the first terminal device to transmit the V2X message; the transceiver module is specifically configured to send the feedback information for the discovery request when the first matching condition is satisfied; wherein the first matching The conditions include at least one of the following: the terminal type of the second terminal device belongs to the first terminal type, the second terminal device accepts the first service type, and the second terminal device accepts the first communication type, or the distance between the second terminal device and the first terminal device is less than a distance threshold.
  • the feedback information carries the location information of the second terminal device.
  • an embodiment of the present application provides a terminal device, including: a transceiver module configured to send a first message to a first configuration network element, where the first message is used to acquire a transceiver mode of the first terminal device ; the transceiver module is further configured to receive a response to the first message from the first configuration network element, and the response to the first message carries the information of the third transceiver mode; the processing module is configured to receive a response according to the first message The response of the first message obtains the third transceiving mode; the transceiving module is further configured to adopt the third transceiving mode to transmit the V2X message; the third transceiving mode is a no-send and no-receive mode, or a mode of only sending and not receiving. Receive mode, or receive only without transmit mode, or low frequency transmit and receive mode, or high frequency transmit and receive mode.
  • the first message carries at least one of the following information: a second terminal type, a second service type, a second communication type, and location information of the first terminal device;
  • the second terminal type is the terminal type of the terminal device that the first terminal device requests to discover, the second service type is the service type of the V2X message to be transmitted by the first terminal device, and the second communication type is The communication type to be used by the first terminal device to transmit the V2X message.
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure moment of the third transceiving mode.
  • the failure moment may be a time moment, that is, the first transceiving mode is invalid at a certain time moment.
  • the transceiving module is further configured to transmit the V2X message by using the fourth transceiving mode after the processing module determines that the third transceiving mode is invalid according to the first time information
  • the fourth transceiver mode is the no-transmit and no-receive mode, or the only-transmit and no-receive mode, or the only-receive-no-transmit mode, or the low-frequency transmit-and-receive mode, or the high-frequency transmit and receive mode. receive mode.
  • an embodiment of the present application provides a configuration network element, including: a transceiver module, configured to receive a first message, where the first message is used to obtain a transceiver mode of a first terminal device; a processing module, configured to generate a the response to the first message; the transceiver module is further configured to send a response to the first message, where the response to the first message carries information of the third transceiver mode.
  • the transceiver module is further configured to send a second message to the second configuration network element, where the second message is used to acquire the transceiver mode of the first terminal device; the transceiver module, It is further configured to receive a response to the second message from the second configuration network element, where the response to the second message carries the information of the third transceiving mode.
  • the second message carries at least one item of the following information: a second terminal type, a second service type, a second communication type, location information of the first terminal device, the first An identifier of a terminal device; wherein the second terminal type is the terminal type of the terminal device that the first terminal device requests to discover, and the second service type is the service of the V2X message to be transmitted by the first terminal device type, the second communication type is the communication type to be used by the first terminal device to transmit the V2X message.
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure moment of the third transceiving mode.
  • the processing module is further configured to determine the third transceiver of the first terminal device according to the number of fourth terminal devices that satisfy the third matching condition corresponding to the second information
  • the third matching condition satisfied by any fourth terminal device includes at least one of the following: the terminal type of the any fourth terminal device belongs to the second terminal type, and the any fourth terminal device belongs to the second terminal type.
  • the device accepts the second service type, the any fourth terminal device accepts the second communication type, or the distance between the any fourth terminal device and the first terminal device is less than a distance threshold.
  • the processing module is specifically configured to: in the case that the number of fourth terminal devices that satisfy the third matching condition corresponding to the second information is less than a fourth number threshold, the first The configuration network element determines that the third transceiving mode is the low-frequency sending and receiving mode; or in the case that the number of fourth terminal devices that satisfy the third matching condition corresponding to the second information is less than the fifth number threshold , the first configuration network element determines that the third transceiving mode is the sending-only and no-receiving mode or the only-receiving and no-sending mode, and the fifth quantity threshold is smaller than the fourth quantity threshold; In the case that the number of fourth terminal devices corresponding to the third matching condition corresponding to the second information is less than the sixth number threshold, the first configuration network element determines that the third transceiving mode is the non-transmitting and non-receiving mode , the sixth quantity threshold is less than the fifth quantity threshold; or, in the case that the number of fourth terminal devices that satisfy the third matching condition corresponding
  • the processing module is further configured to determine, according to peripheral information of the first terminal device, the third transceiving mode to be adopted by the first terminal device.
  • the embodiments of the present application provide another configuration network element, including: a transceiver module, configured to receive a second message, where the second message is used to acquire a transceiver mode of the first terminal device; a processing module, configured to generating a response to the second message; the transceiving module is further configured to send a response to the second message, where the response to the second message carries information of a third transceiving mode.
  • the second message carries at least one of the following information: a second terminal type, a second service type, a second communication type, location information of the first terminal device, the first An identifier of a terminal device; wherein the second terminal type is the terminal type of the terminal device that the first terminal device requests to discover, and the second service type is the service of the V2X message to be transmitted by the first terminal device type, the second communication type is the communication type to be used by the first terminal device to transmit the V2X message.
  • the processing module is further configured to determine the third transceiver of the first terminal device according to the number of third terminal devices that satisfy the second matching condition corresponding to the second information mode; wherein, the second matching condition satisfied by any third terminal device includes at least one of the following: the terminal type of the any third terminal device belongs to the second terminal type, and the any third terminal device belongs to the second terminal type.
  • the device accepts the second service type, the any third terminal device accepts the second communication type, or the distance between the any third terminal device and the first terminal device is less than a distance threshold.
  • the processing module is specifically configured to: in the case that the number of third terminal devices that satisfy the second matching condition corresponding to the second information is less than a fourth number threshold, the second Configuring the network element to determine that the third transceiving mode is the low-frequency sending and receiving mode; or in the case that the number of third terminal devices that satisfy the second matching condition corresponding to the second information is less than the fifth number threshold , the second configuration network element determines that the third transceiving mode is the sending-only and no-receiving mode or the only-receiving and no-sending mode, and the fifth quantity threshold is smaller than the fourth quantity threshold;
  • the second configuration network element determines that the third transceiving mode is the non-transmitting and non-receiving mode , the sixth quantity threshold is less than the fifth quantity threshold; or, in the case that the number of third terminal devices that satisfy the second matching condition corresponding to the second information
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure moment of the third transceiving mode.
  • the processing module is further configured to determine, according to peripheral information of the first terminal device, the third transceiving mode to be adopted by the first terminal device.
  • the processing module is further configured to count the number of third terminal devices that satisfy the second matching condition corresponding to the second information.
  • the processing module is specifically configured to determine, according to the current location of the first terminal device and surrounding environment information of the first terminal device, a method to be used by the first terminal device the third transceiving mode.
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure moment of the third transceiving mode.
  • a communication apparatus is provided, for example, the communication apparatus is the aforementioned first terminal device.
  • the communication apparatus includes a processor and a communication interface that can be used to communicate with other apparatuses or devices.
  • a memory may also be included for storing computer instructions.
  • the processor and the memory are coupled to each other for implementing the method described in the above first aspect or various possible implementation manners.
  • the communication device may not include the memory, and the memory may be located outside the communication device.
  • the processor, the memory and the communication interface are coupled to each other, and are used to implement the method described in the first aspect or various possible implementation manners.
  • the communication apparatus when the processor executes the computer instructions stored in the memory, the communication apparatus is caused to perform the method in the first aspect or any one of the possible implementation manners.
  • the communication apparatus is a communication device, or a chip or other components provided in the communication device.
  • a twelfth aspect provides a communication apparatus, where the communication apparatus is, for example, the aforementioned second terminal device.
  • the communication apparatus includes a processor and a communication interface that can be used to communicate with other apparatuses or devices.
  • a memory may also be included for storing computer instructions.
  • the processor and the memory are coupled to each other for implementing the method described in the above second aspect or various possible implementation manners.
  • the communication device may not include memory, and the memory may be external to the communication device.
  • the processor, the memory and the communication interface are coupled to each other, and are used to implement the method described in the second aspect or various possible implementation manners.
  • a thirteenth aspect provides a communication apparatus, where the communication apparatus is, for example, the aforementioned first terminal device.
  • the communication apparatus includes a processor and a communication interface that can be used to communicate with other apparatuses or devices.
  • a memory may also be included for storing computer instructions.
  • the processor and the memory are coupled to each other for implementing the method described in the third aspect or various possible implementation manners.
  • the communication device may not include the memory, and the memory may be located outside the communication device.
  • the processor, the memory and the communication interface are coupled to each other, and are used to implement the method described in the third aspect or various possible implementation manners.
  • a fourteenth aspect provides a network element, where the network element is, for example, the first configuration network element as described above.
  • the network element includes a processor and a communication interface that can be used to communicate with other devices or devices.
  • a memory may also be included for storing computer instructions.
  • the processor and the memory are coupled to each other for implementing the method described in the fourth aspect or various possible implementation manners.
  • the network element may not include the memory, and the memory may be located outside the network element.
  • the processor, the memory, and the communication interface are coupled to each other, and are used to implement the method described in the fourth aspect or various possible implementation manners.
  • the network element is a communication device, or a chip or other component provided in the communication device.
  • another network element is provided, and the network element is, for example, the second configuration network element as described above.
  • the network element includes a processor and a communication interface that can be used to communicate with other devices or devices.
  • a memory may also be included for storing computer instructions.
  • the processor and the memory are coupled to each other for implementing the method described in the fifth aspect or various possible implementation manners.
  • the network element may not include the memory, and the memory may be located outside the network element.
  • the processor, the memory, and the communication interface are coupled to each other, and are used to implement the method described in the fifth aspect or various possible implementation manners.
  • the network element is a communication device, or a chip or other component provided in the communication device.
  • a sixteenth aspect provides a chip, the chip includes a processor and a communication interface, the processor is coupled to the communication interface, and is configured to implement the method provided in the first aspect or any possible implementation. .
  • a seventeenth aspect provides a chip, the chip includes a processor and a communication interface, the processor is coupled to the communication interface, and is configured to implement the method provided in the second aspect or any possible implementation. .
  • An eighteenth aspect provides a chip, the chip includes a processor and a communication interface, the processor is coupled to the communication interface, and is used for implementing the method provided in the third aspect or any possible implementation. .
  • a nineteenth aspect provides a chip, the chip includes a processor and a communication interface, the processor is coupled to the communication interface, and is configured to implement the method provided in the fourth aspect or any possible implementation. .
  • a twentieth aspect provides a chip, the chip includes a processor and a communication interface, the processor is coupled to the communication interface, and is configured to implement the method provided in the fifth aspect or any possible implementation. .
  • a computer-readable storage medium is provided, where the computer-readable storage medium is used to store a computer program, and when the computer program runs on a computer, the computer is made to execute the first aspect or any of the above The method described in a possible embodiment.
  • a twenty-second aspect provides a computer-readable storage medium for storing a computer program that, when the computer program runs on a computer, causes the computer to execute the second aspect or any of the above The method described in a possible embodiment.
  • a computer-readable storage medium is provided, the computer-readable storage medium is used to store a computer program, and when the computer program is run on a computer, the computer is made to execute the third aspect or any of the above The method described in a possible embodiment.
  • a twenty-fourth aspect provides a computer-readable storage medium for storing a computer program that, when the computer program runs on a computer, causes the computer to execute the fourth aspect or any of the above The method described in a possible embodiment.
  • a twenty-fifth aspect provides a computer-readable storage medium for storing a computer program that, when the computer program runs on a computer, causes the computer to execute the fifth aspect or any of the above The method described in a possible embodiment.
  • a twenty-sixth aspect provides a computer program product comprising instructions, the computer program product is used to store a computer program, and when the computer program is run on a computer, causes the computer to execute the first aspect or any of the above The method described in a possible embodiment.
  • a twenty-seventh aspect provides a computer program product comprising instructions, the computer program product is used to store a computer program, when the computer program is run on a computer, the computer is made to execute the second aspect or any of the above The method described in a possible embodiment.
  • a twenty-eighth aspect provides a computer program product containing instructions, the computer program product is used to store a computer program, when the computer program is run on a computer, the computer is made to execute the third aspect or any of the above The method described in a possible embodiment.
  • a twenty-ninth aspect provides a computer program product comprising instructions, the computer program product is used to store a computer program, when the computer program is run on a computer, the computer is made to execute the fourth aspect or any of the above The method described in a possible embodiment.
  • a thirtieth aspect provides a computer program product comprising instructions, the computer program product is used to store a computer program, and when the computer program is run on a computer, the computer is made to execute any one of the above-mentioned fifth aspect or method described in a possible embodiment.
  • FIG. 1 is a schematic diagram of a 5G network architecture provided by this application.
  • FIG. 2 is a schematic diagram of a V2X communication scenario provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • FIG. 4 is a flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 5 is an interaction flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 6 is an interaction flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 7 is an interaction flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a first terminal device according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a second terminal device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of another first terminal device provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a first configuration network element provided by an embodiment of the application.
  • FIG. 12 is a schematic structural diagram of a second configuration network element provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • At least one (item) means one or more
  • plural means two or more
  • at least two (item) means two or three and three
  • “and/or” is used to describe the relationship of related objects, indicating that there can be three kinds of relationships, for example, "A and/or B” can mean: only A exists, only B exists, and both A and B exist three A case where A and B can be singular or plural.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • At least one of the following” or similar expressions refers to any combination of these items. For example, at least one (a) of a, b or c, can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c" ".
  • 5G fifth generation
  • NR new radio
  • 6G 6th generation
  • 5G networks will be built in a flexible manner. Among them, a potential direction is the separation of network functions, that is, the separation of control plane (CP) and user plane (UP) functions, and the separation of mobility management (MM) and session management ( session management, SM) function separation.
  • CP control plane
  • UP user plane
  • MM mobility management
  • SM session management
  • Network slicing technology is to cut a physical network into multiple virtual end-to-end networks.
  • Each virtual network including the devices, access technologies, transmission paths, and core networks within the network, is logically independent.
  • each network slice is composed of an independent network function or function combination instantiation, which has different functional characteristics and faces different needs and services.
  • the separation of network slices enables different users and user groups to flexibly and dynamically define and customize network capabilities according to their different application scenarios and requirements, without affecting each other.
  • a network slice includes a control plane function (CPF) entity and a user plane function (UPF) entity.
  • CPF control plane function
  • UPF user plane function
  • the CPF entity mainly completes access control and mobility management functions (access control and mobility management function, AMF) of user equipment (user equipment, UE) such as access authentication, security encryption, location registration, and user plane transmission path Session management functions (session management function, SMF) such as establishment, release and modification of the UPF entity;
  • AMF access control and mobility management function
  • Session management functions session management function, SMF
  • UPF entity mainly completes functions such as routing and forwarding of user plane data.
  • FIG. 1 is a schematic diagram of a 5G network architecture provided by the present application.
  • the 5G network architecture includes: access and mobility management function (AMF), session management function (SMF), policy and control function (PCF) ), application function (AF), network slice selection function (NSSF), authentication server function (AUSF), unified data management (UDM), UPF, Access network (AN), UE, DN.
  • AMF access and mobility management function
  • SMF session management function
  • PCF policy and control function
  • AF application function
  • NSSF network slice selection function
  • AUSF authentication server function
  • UDM unified data management
  • UPF User Plane
  • AN Access network
  • UE DN.
  • the main network entity functions in the 5G network architecture are as follows:
  • RAN A network composed of multiple 5G-RAN nodes that implement wireless physical layer functions, resource scheduling and radio resource management, radio access control, and mobility management functions.
  • RAN stands for Radio Access Network.
  • 5G-RAN is connected to UPF through user plane interface N3, which is used to transmit data of terminal equipment; 5G-RAN establishes a control plane signaling connection with AMF through control plane interface N2, which is used to realize functions such as radio access bearer control.
  • AMF mainly responsible for UE authentication, UE mobility management, network slice selection, SMF selection and other functions; as the anchor point of N1 and N2 signaling connection and provides N1/N2 SM message routing for SMF; maintains and manages the state of the UE information.
  • SMF It is mainly responsible for all control plane functions of UE session management, including UPF selection, IP address allocation, session quality of service (QoS) management, and PCC policy acquisition (from PCF).
  • UPF As the anchor point of the protocol data unit (Protocol data unit, PDU) session connection, it is responsible for data packet filtering, data transmission/forwarding, rate control, and generation of charging information for user equipment.
  • PDU session refers to a logical data transmission channel established to transmit corresponding services.
  • UDM network element mainly controls user data, such as the management of subscription information, including obtaining subscription information from the Unified Data Repository (UDR) network element and providing it to other network elements (such as AMF); generating third-party information for the UE
  • UDR Unified Data Repository
  • AMF Access Management Function
  • the authentication certificate of the 3rd generation partnership project (3GPP) register and maintain the network element currently serving the UE (for example, the AMF represented by AMF ID1 is the current serving AMF of the UE)).
  • UDR network element mainly used to store user data, including subscription data called by UDM, policy information called by PCF, and structured data used for capability opening.
  • AF entity application service function, interacting with core network elements to provide some services, for example, interacting with PCF for business policy control, interacting with network capability exposure function (NEF) to obtain some network capability information or provide In response to some application information to the network, some data network access point information is provided to the PCF to generate the routing information of the corresponding data service.
  • NEF network capability exposure function
  • AUSF used for security authentication of the UE when the UE accesses the network.
  • NSSF Select a slice instance set for the UE, and determine the AMF set and the allowed network slice selection assistance information (NSSAI) for the UE.
  • NSSAI network slice selection assistance information
  • PCF Provides configuration policy information for the UE, and provides policy information for the control plane network elements (eg AMF, SMF) of the network to manage and control the UE.
  • control plane network elements eg AMF, SMF
  • FIG. 2 is a schematic diagram of a V2X communication scenario provided by an embodiment of the present application.
  • Figure 2 shows a communication scenario under the 5G network architecture.
  • the V2X communication scenario includes 5G core network (5G core network, 5GC), NG-RAN, V2X application server, and one or more terminal devices.
  • 5G core network 5G core network, 5GC
  • NG-RAN 5G Radio Access Network.
  • the terminal device may be user equipment, such as a mobile phone, tablet computer, wearable device, etc., or a vehicle, such as a car, a bus, etc., or other devices capable of communicating with vehicles, such as a road Side wireless unit (road side unit, RSU).
  • the V2X application server is used to provide V2X application services for terminal equipment
  • the NG-RAN is used to connect the terminal equipment to the 5G core network or V2X application server.
  • the NWDAF network element is a network data analysis function network element, which is mainly used to collect relevant data from other network elements in the network, receive data analysis requests from other network elements, and feed back the corresponding data analysis results. .
  • V2X communication includes communication with the fifth interface of proximity communication (prose communication 5, PC5) and communication with the Uu interface, that is, some V2X services communicate with the V2X application server through the Uu interface, while Some V2X services communicate directly between UEs through the PC5 interface.
  • Uu interface communication and PC5 interface communication use different frequency bands, and Uu interface communication and PC5 interface communication (also called PC5 communication) can be performed at the same time.
  • V2X communication includes vehicle-to-vehicle (V2V), vehicle-to-pedestrian (V2P), pedestrian-to-vehicle (P2V), and pedestrian-to-pedestrian (pedestrian to pedestrian).
  • V2P vehicle to roadside unit
  • V2 (RSU) vehicle to roadside unit
  • pedestrian refers to the user equipment of the pedestrian, such as a mobile phone.
  • V2P refers to vehicle-to-pedestrian user equipment.
  • the application layer of the UE can communicate with the V2X application server through the V1 interface (logical interface, actually through the user plane path established between the UE and the network);
  • the PC5 interface is the interface between the two UEs , V2X communication is performed between two UEs through the PC5 interface;
  • the V5 interface is the logical interface of the V2X application layer between the two UEs, and the V2X application layer messages are communicated through this logical interface;
  • the Uu interface is between the UE and the RAN node.
  • Interface for example, in the base station scheduling mode (mode1), when the UE needs to send data through the PC5 interface, the UE requests and obtains the corresponding PC5 communication resources from the RAN node through the Uu interface.
  • mode1 base station scheduling mode
  • V2X communication includes unicast (unicast), multicast (groupcast), and broadcast (broadcast).
  • unicast unicast
  • groupcast multicast
  • broadcast broadcast
  • service types for V2X services there are many different service types for V2X services, and each service type corresponds to different application scenarios and QoS requirements.
  • the terminal device when a terminal device performs V2X communication through multicast or broadcast, the terminal device needs to monitor V2X messages from other devices at all times, and at the same time send any V2X message generated by its application layer through multicast or broadcast.
  • the V2X message may be a P2V message, a V2P message, or other messages.
  • the terminal device is always in a mode of both sending and receiving V2X messages, that is, sending and receiving mode. It can be understood that, in the currently adopted V2X communication solution, the terminal device is always in the sending and receiving mode, and the energy saving problem when performing V2X communication through multicast/broadcast is not considered.
  • the technical solution provided by this application takes into account the energy saving problem when V2X communication is performed through multicast/broadcast, and by flexibly setting the mode for transmitting V2X messages, power consumption caused by unnecessary V2X message transmission can be avoided.
  • the technical solutions provided in this application are mainly used to solve the energy saving problem when terminal equipment communicates with other terminal equipment through multicast/broadcast. In order to realize the communication energy saving of PC5 interface.
  • the main principles of the technical solutions provided by the present application are as follows: under the principle of sufficient security, terminal devices (such as mobile phones) try to send and receive less V2X messages as little as possible.
  • the terminal device can set the PC5 transceiver mode (that is, the mode of transmitting V2X messages through the PC5 interface) based on the surrounding environment and other specific V2X applications, and adjust the range of broadcast V2X messages, thereby reducing the transmission power.
  • FIG. 3 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • 301 denotes a terminal device (such as a mobile phone) in a congested area and a dangerous area such as a road environment.
  • the terminal device 301 both sends and receives V2X messages, that is, performs PC5 transceiver communication;
  • 302 denotes a non-congested area and away from the road Terminal equipment in a relatively safe area such as the environment, terminal equipment 302 only sends V2X messages or only receives V2X messages, that is, executes PC5 to send or receive communications;
  • 303 represents terminal equipment in a safe area without traffic environment, and terminal equipment 303 neither receives V2X
  • the messages also do not send V2X messages, i.e. do not perform PC5 communication.
  • terminal devices such as mobile phones
  • FIG. 3 that terminal devices (such as mobile phones) in different environments can adopt different transceiver modes under the condition of ensuring security.
  • FIG. 4 is a flowchart of a communication method provided by an embodiment of the present application. As shown in Figure 4, the method may include:
  • the first terminal device receives information from at least one second terminal device.
  • the first terminal device may be a terminal device, such as a mobile phone, a tablet computer, a personal digital assistant, a wearable device, etc.; it may also be a vehicle, such as a car, a motorcycle, and the like.
  • the first terminal device is a pedestrian user device, such as a mobile phone, a wearable device, etc.; the second terminal device is a vehicle, such as a car.
  • the first terminal device determines a first transceiving mode of the first terminal device according to information from at least one second terminal device.
  • the above-mentioned first transceiver mode is a no-transmit and no-receive mode, or a transmit-no-receive mode, or a receive-no-transmit mode, a low-frequency transmit-and-receive mode, or a high-frequency transmit-and-receive mode.
  • the no-send-no-receive mode refers to a mode in which neither V2X messages are sent nor V2X messages received.
  • the first terminal device adopts the no-send-no-receive mode, it neither sends V2X messages nor receives V2X messages from other terminal devices.
  • the mode of only sending and not receiving refers to the mode of sending V2X messages but not receiving V2X messages.
  • the first terminal device When the first terminal device adopts the mode of only sending and not receiving, it sends V2X messages, but does not receive V2X messages from other terminal devices.
  • the mode of receiving only and not sending refers to the mode of receiving V2X messages without sending V2X messages.
  • the first terminal device can configure the frequency of transmitting V2X messages in the low-frequency sending and receiving mode according to actual requirements; it can also configure the frequency of transmitting V2X messages in the high-frequency sending and receiving mode according to actual requirements. For example, the high frequency is 10HZ and the low frequency is 5HZ.
  • the high frequency is in the range of 10-50 Hz
  • the low frequency is in the range of 1-10 Hz.
  • the low-frequency transmission and reception mode and/or the high-frequency transmission and reception mode may be implemented based on an application on the first terminal device, or may be implemented based on the first terminal device, or may be configured by the PCF. Not limited.
  • step 402 is as follows: the first terminal device determines, according to the information from the at least one second terminal device, that the distance between the at least one second terminal device and the first terminal device is less than a distance threshold (for example, 50 meters, 100 meters, 1000 meters, etc.) of the number of second terminal devices; according to the number of second terminal devices whose distance from the first terminal device in the above at least one second terminal device is less than the distance threshold, determine the above-mentioned first terminal device. Transceiver mode.
  • a distance threshold for example, 50 meters, 100 meters, 1000 meters, etc.
  • the first threshold for example, 10, 20, etc.
  • determine the first transceiving mode is any one of a reception-only and no-transmission mode, a transmit-only and no-receive mode, a no-transmission and no-reception mode, and a low-frequency transmission and reception mode.
  • the distance between the first terminal device and the first terminal device is smaller than the distance threshold.
  • the number of second terminal devices is not less than the first threshold (for example, 10, 20, etc.) Next, determine the high frequency transmit and receive mode.
  • the first terminal device can transmit V2X messages in a high-frequency sending and receiving mode, so as to ensure the safety of pedestrians and vehicles.
  • the first terminal device may: The first terminal device determines that the first transceiving mode is the low-frequency sending and receiving mode; or the number of second terminal devices whose distance from the first terminal device is less than a distance threshold in the at least one second terminal device is small In the case of a second quantity threshold (for example, 20), the first terminal device determines that the first transceiving mode is the above-mentioned sending-only and no-receiving mode or the above-mentioned only receiving and no-sending mode, and the second quantity threshold is smaller than the first quantity threshold Or, in the above-mentioned at least one second terminal equipment and
  • the above-mentioned first terminal device determines that the above-mentioned first transceiving mode is the above-mentioned high-frequency sending and receiving mode.
  • the information from the at least one second terminal device includes location information of each second terminal device.
  • the first terminal device receives the first information sent by the second terminal device 1 and the second information sent by the second terminal device 2, where the first information carries the location information of the second terminal device 1, and the second information Carrying the location information of the second terminal device 2, the first terminal device determines the distance from the second terminal device 1 according to the location information of the second terminal device 1 and its own location, and the first terminal device determines the distance from the second terminal device 1 according to the second terminal device 2
  • the location information and its own location determine the distance from the second terminal device 2 .
  • the information from the at least one second terminal device includes indication information indicating the distance between each second terminal device and the first terminal device, and in this case, the location information of the second terminal device does not need to be included.
  • the first terminal device receives third information sent by the second terminal device 3 and fourth information sent by the second terminal device 4, where the third information carries information indicating the relationship between the second terminal device 3 and the first terminal device Indication information 1 indicating the distance between the second terminal device 4 and the first terminal device, the fourth information carries indication information 2 indicating the distance between the second terminal device 4 and the first terminal device, and the first terminal device obtains the distance between the second terminal device 1 and the second terminal device 1 according to the indicator information 1 The distance between the first terminal device and the second terminal device 2 is obtained according to the indication information 2 .
  • the first terminal device may also determine the distance with each second terminal device in other ways, for example, using vehicle-mounted radar to measure the distance between the first terminal device and each second terminal device, which is not limited in this application.
  • the first terminal device may further consider geographic location information to determine the transmission and reception mode to be adopted. That is to say, the first terminal device may use its current location and surrounding environment information as auxiliary information to determine the sending and receiving mode to be adopted. For example, if the first terminal device E is at an intersection, it belongs to a high-risk area, and it is determined that the sending and receiving mode is to be used, that is, both sending and receiving V2X messages; if the first terminal device is located inside a building or away from the road, it is determined The mode of not sending and not receiving is to be adopted, that is, neither sending nor receiving V2X messages.
  • which of the foregoing energy-saving transceiver modes the first terminal device selects may be implemented based on the characteristics of the first terminal device. That is to say, different types of terminal devices can adopt different transceiving modes. For example, vehicle type end devices can always be in both transmit and receive mode without power saving.
  • the first terminal device transmits the V2X message by using the above-mentioned first transceiving mode.
  • the first terminal device transmits the V2X message by using the second transceiving mode
  • the above-mentioned second transceiving mode is the above-mentioned non-transmitting and no-receiving mode, or the above-mentioned only transmitting and no-receiving mode, or the above-mentioned only receiving and no-transmitting mode, or the above-mentioned low-frequency transmitting and receiving mode, or the above-mentioned high-frequency transmitting and receiving mode.
  • the first terminal device determines that the first transceiving mode is invalid.
  • the first terminal device determines that the first transceiving mode is invalid.
  • the target event may be an event of urgently transmitting a V2X message, an abnormal event, or other events, which are not limited in this application. That is, certain events can trigger the failure of the first transceiving mode.
  • the first terminal device determines the failure time of the first transceiving mode.
  • the failure moment may be a time moment, that is, the first transceiving mode is invalid at a certain time moment.
  • the effective duration of each sending and receiving mode is 10 seconds, 30 seconds, 1 minute, and five minutes.
  • the first terminal device uses the first transceiving mode to transmit the V2X message for a duration that reaches the effective duration of the first transceiving mode (ie, reaches the failure time of the first transceiving mode), the first transceiving mode becomes invalid.
  • the valid duration (corresponding to the timer) of the first transceiver mode may be implemented based on applications, that is, different applications may use different valid durations; it may also be implemented based on the first terminal device, for example, different terminal devices may use different valid durations.
  • Valid duration; the valid duration of the first transceiver mode can also be configured by the PCF. For example, if there are 10 vehicles around the first terminal device, the timer is 10s; if there are 20 vehicles around the first terminal device, the timer is 8s; if there are 50 vehicles around the first terminal device, the timer is 5s. It should be understood that the surrounding environment of the first terminal device does not always remain unchanged, so the first terminal device needs to adjust the mode of transmitting the V2X message in time.
  • the re-determined transceiving mode is used to transmit the V2X message, so as to facilitate the transmission of V2X messages in the ever-changing
  • the appropriate sending and receiving mode can be selected in time in the environment of the mobile phone, which can reduce the power consumption while ensuring the safety of pedestrians and vehicles.
  • the first terminal device transmits the V2X message by using the first transceiving mode determined according to information from at least one second terminal device, which can achieve communication energy saving.
  • FIG. 5 is an interaction flowchart of another communication method provided by an embodiment of the present application.
  • the communication interaction flow in FIG. 5 is a further refinement and improvement of the communication flow in FIG. 4 .
  • the method includes:
  • the first terminal device sends a discovery request in a broadcast or multicast manner.
  • the above-mentioned discovery request may be used to obtain the information required by the above-mentioned first terminal device to determine the transceiving mode for transmitting the V2X message.
  • the V2X layer (layer) of the first terminal device sends a discovery request by broadcasting or multicasting to acquire peripheral information of the first terminal device, that is, the above-mentioned first terminal device determines the sending and receiving mode required for transmitting the V2X message. information.
  • the above-mentioned discovery request carries at least one of the following information: a first terminal type, a first service type, a first communication type, and location information of the above-mentioned first terminal device; wherein, the above-mentioned first terminal type is the above-mentioned first terminal type.
  • the terminal type of the terminal device requested by the terminal device to be discovered the first service type is the service type of the V2X message to be transmitted by the first terminal device
  • the first communication type is the communication to be used by the first terminal device to transmit the V2X message Types of.
  • the terminal type (UE type) may be replaced by the user type (user type).
  • the first terminal type is any one of P-UE, V-UE, RSU, group ID (Group ID), etc., where P-UE refers to the user equipment of pedestrians, and V-UE refers to vehicles.
  • RSU refers to the roadside wireless unit, and the Group ID is used to indicate the discovery of other group members belonging to the Group ID.
  • the first service type is a provider service identifier (Provider service identifier, PSID), which is used to indicate the service type of the V2X service.
  • PSID provider service identifier
  • the first service type may be understood as the V2X service being performed and/or to be performed by the first terminal device.
  • the location information of the first terminal device can enable the second terminal device that receives the discovery request to determine whether it is necessary to return a feedback message (also called response information) to the first terminal device for the discovery request. For example, if the second terminal device If the distance from the first terminal device is greater than the distance threshold, the second terminal device does not return a feedback message to the first terminal device.
  • the first communication type is multicast or broadcast.
  • step 501 is as follows: the first terminal device sends a discovery request by broadcasting or multicasting when it is determined that the mode of transmitting the V2X message can be currently set.
  • setting the mode for transmitting V2X messages may be understood as adjusting the currently adopted mode for transmitting V2X messages.
  • the first terminal device determines, according to the service type and/or communication type of the V2X message, whether it can set its own sending and receiving mode, that is, the mode for transmitting the V2X message.
  • the application layer of the first terminal device triggers the V2X service, that is, a V2X message to be sent is generated, the V2X layer obtains the service type and/or communication type of the V2X message, and the V2X layer obtains the service type and/or communication type of the V2X message according to the service type and/or Communication type, to determine whether the transceiver mode of the first terminal device can be flexibly set.
  • the service type and/or communication type of the V2X message may be understood as the service type and/or communication type of the V2X service (service) to which the V2X message belongs.
  • the V2X layer of the first terminal device determines, according to the communication type of the V2X message, whether flexible settings of the sending and receiving mode can be performed. For example, if the service type of the V2X message is anti-collision message/group chat, the sending and receiving mode of the first terminal device can be flexibly set; if the service type of the V2X message is fleet remote driving, the sending and receiving mode of the first terminal device cannot be flexibly set. model.
  • the V2X layer of the first terminal device determines, according to the communication type of the V2X message, whether flexible settings of the sending and receiving mode can be performed.
  • the V2X layer of the first terminal device determines that flexible settings of the sending and receiving mode can be performed; if the communication type of the V2X message is unicast mode communication, the V2X layer of the first terminal device Make sure that the flexible setting of the send and receive mode is not possible.
  • the second terminal device sends feedback information for the foregoing discovery request.
  • UE2 and UE3 in FIG. 5 are only used as an example of the second terminal device. It should be understood that the number of second terminal devices that send feedback information for the above discovery request is not limited to two, and may be multiple or one. Since the operations performed by each second terminal device are similar, only one second terminal device is used as an example for description below.
  • the above-mentioned discovery request carries at least one of the following information: a first terminal type, a first service type, a first communication type, and the location information of the above-mentioned first terminal device;
  • the first terminal type is the terminal type of the terminal device that the first terminal device requests to discover
  • the first service type is the service type of the V2X message to be transmitted by the first terminal device
  • the first communication type is the first communication type.
  • the above-mentioned second terminal device sends the above-mentioned feedback information to the above-mentioned discovery request; wherein, the above-mentioned first matching condition includes at least one of the following:
  • the terminal type of the above-mentioned second terminal device belongs to the above-mentioned first terminal type
  • the above-mentioned second terminal device accepts the above-mentioned first service type
  • the above-mentioned second terminal device accepts the above-mentioned first communication type, or
  • the distance between the second terminal device and the first terminal device is less than a distance threshold.
  • the above-mentioned first matching condition includes: the terminal type of the above-mentioned second terminal device is the above-mentioned first terminal type. Further, if it is found that the request also carries the above-mentioned first service type, the above-mentioned first matching condition further includes: the above-mentioned second terminal device receives the above-mentioned first service type. Further, if it is found that the request also carries the above-mentioned first communication type, the above-mentioned first matching condition further includes: the above-mentioned second terminal device accepts the above-mentioned first communication type.
  • the first matching condition includes further comprising: the distance between the second terminal device and the first terminal device is less than a distance threshold.
  • the second terminal device determines whether the distance from the first terminal device is less than a distance threshold according to the location information of the first terminal device.
  • Accepting the first service type by the second terminal device may be understood as the second terminal device being interested in the first service type (eg, anti-collision message) or the second terminal device supporting the first service type.
  • the acceptance of the first communication type by the second terminal device may be understood as the fact that the second terminal device is interested in the first communication type (eg broadcast communication) or the second terminal device supports the first communication type.
  • the feedback message sent by the second terminal device may carry the above-mentioned location information of the second terminal device, wherein the location information is used by the first terminal device to determine the distance between the second terminal device and the first terminal device.
  • the feedback message sent by the second terminal device may carry distance information between the first terminal device and the second terminal, and the above distance information is obtained by the second terminal device according to the location information of the first terminal device and its own location. information, or measured by other means such as its on-board radar.
  • the V2X layer of the first terminal device determines a first transceiving mode according to feedback information from at least one second terminal device.
  • the V2X layer of the first terminal device may determine the to-be-adopted transceiving mode (corresponding to the first transceiving mode) according to feedback information from each surrounding second terminal device.
  • step 503 is as follows: the first terminal device determines the above-mentioned first transceiving mode according to the quantity of feedback information from the at least one second terminal device; wherein, the quantity of the feedback information from the at least one second terminal device may be is the number of second terminal devices that send feedback information to the first terminal device. It can be understood that, in this implementation manner, it is assumed that a certain second terminal device sends more than one piece of feedback information to the first terminal device, and the first terminal device considers that the number of feedback information from the second terminal device is 1. For example, 10 second terminal devices send a total of 12 pieces of feedback information to the first terminal device, and for the first terminal device, the number of feedback information from the 10 second terminal devices is 10.
  • the feedback information of the at least one second terminal device includes location information of each second terminal device; the first terminal device is based on the location information of each second terminal device in the at least one second terminal device and the first terminal device.
  • the location information of the device the number of terminal devices whose distance from the at least one second terminal device and the first terminal device is less than the distance threshold is taken as the number of valid feedback information from the at least one second terminal device.
  • the feedback information sent by each second terminal device carries the location information of the second terminal device.
  • the feedback information sent by the second terminal device carries distance information, where the distance information indicates the distance between the second terminal device and the first terminal device.
  • the first terminal device may also determine the distance from each second terminal device by itself (for example, by using a vehicle-mounted radar).
  • the above distance thresholds for example, 500 meters, 1 kilometer, 5 kilometers, etc.
  • the application is not limited.
  • the first terminal device determines, according to the quantity of feedback information from the at least one second terminal device, that the first transceiving mode may be: when the quantity of feedback information from the at least one second terminal device is less than In the case of a first number threshold (for example, 50), the first terminal device determines that the first transceiving mode is the low-frequency sending and receiving mode; or
  • the first terminal device determines that the first transceiving mode is the above-mentioned sending-only and no-receiving mode or the above-mentioned only receiving mode In no-transmission mode, the second threshold of quantity is less than the first threshold of quantity; or,
  • the first terminal device determines that the first transceiving mode is the no-transmitting-no-receiving mode, and the third The quantity threshold is less than the above-mentioned second quantity threshold; or,
  • the first terminal device determines that the first transceiving mode is the high-frequency sending and receiving mode.
  • the first terminal device may further broadcast the foregoing first transceiving mode.
  • the first terminal device broadcasts the first transceiving mode and the first time information, where the first time information is used to determine the moment when the first transceiving mode becomes invalid.
  • the first time information is a timer or an effective time.
  • the timer is used to indicate the duration of the first transceiving mode
  • the effective time is used to indicate the effective cut-off time of the first transceiving mode.
  • the first terminal device may generate the first time information according to big data statistics or empirical values. Broadcasting the first transceiving mode by the first terminal device can enable the second terminal device to obtain the current transceiving mode of the first terminal device, and then reasonably adjust its own transceiving mode.
  • the first terminal device may further determine the failure moment of the first transceiving mode, and after reaching the failure moment of the first transceiving mode, use the re-determined second transceiving mode mode to transmit V2X messages. It should be understood that the surrounding environment of the first terminal device does not always remain unchanged, so the first terminal device needs to adjust the mode of transmitting the V2X message in time.
  • the first terminal device uses the first transceiving mode to transmit the V2X message; after the first transceiving mode becomes invalid, The V2X message is transmitted using the re-determined second transceiving mode.
  • the V2X layer of the first terminal device notifies the V2X application layer of the first terminal device of the first sending and receiving mode, and the V2X application layer performs the sending and receiving settings of V2X messages according to the first sending and receiving mode.
  • the V2X application layer is set to not need to generate V2X messages; for the low-frequency sending and receiving modules, the V2X application layer is set to a lower frequency, such as 1HZ; for the mode of not sending and not receiving, the V2X application layer It is set to not need to generate V2X messages, and the failure to receive V2X messages will not be regarded as exceptions; for the mode of only sending and not receiving V2X messages, the application layer is set to not treat failure to receive V2X messages as exceptions; for high-frequency sending and receiving modules, the V2X application layer Set a higher frequency, such as 10HZ.
  • the V2X layer of the first terminal device notifies the V2X access layer of the first terminal device of the first transceiving mode, and the V2X access layer performs settings for transceiving V2X messages according to the first transceiving mode.
  • the access layer is set to not listen to the V2X messages of the PC5 interface, or to disable the function of receiving V2X messages; for the mode of only receiving and not sending, the AS is set to not send the V2X of the PC5 interface.
  • the access layer can set a lower frequency according to the terminal device implementation or use a low frequency configured on the network side (such as PCF), such as 1HZ;
  • the access layer can set a higher frequency according to the implementation of the terminal device or use the high frequency configured by the network side (such as PCF), such as 10HZ.
  • the first terminal device may perform only one of steps 504 and 505 to implement the sending and receiving settings of the V2X message. That is to say, the first terminal device may perform step 504 but not step 505, may also perform step 505 but not perform step 504, and may also perform step 504 and step 505. It should be understood that both steps 504 and 505 are optional, but not necessary.
  • the first terminal device transmits the V2X message using the above-mentioned first transceiving mode.
  • the first terminal device transmits the V2X message by using the re-determined second transceiving mode after reaching the time when the first transceiving mode becomes invalid.
  • the V2X layer of the first terminal device determines, according to feedback information from at least one second terminal device, to use a more energy-saving first transceiver mode to transmit V2X messages, which can not only ensure the traffic safety of pedestrians and vehicles but also save energy .
  • FIG. 6 is an interaction flowchart of another communication method provided by an embodiment of the present application.
  • the communication interaction flow in FIG. 6 is a further refinement and improvement of the communication flow in FIG. 4 .
  • the method includes:
  • the first terminal device sends a first V2X message in a broadcast or multicast manner.
  • the first V2X message may be a V2X message corresponding to any ongoing V2X service on the first terminal device.
  • the AS layer of the first terminal device sends the first V2X message in a broadcast or multicast manner.
  • the first terminal device determines a mode that can currently be set to transmit V2X messages, and the V2X layer of the first terminal device instructs the AS layer of the first terminal device to set the transmission V2X message The mode of the message.
  • the first terminal device determines, according to the service type and/or communication type of the V2X message, whether it can set its own sending and receiving mode, that is, the mode for transmitting the V2X message.
  • the operation of the V2X layer of the first terminal device instructing the AS layer of the first terminal device to set the mode for transmitting V2X messages is optional, because the AS layer can flexibly set the transceiver mode for multicast/broadcast by default.
  • the second terminal device sends feedback information for the first V2X message.
  • step 602 is as follows: the second terminal device sends a hybrid automatic repeat request (hybrid automatic repeat request, HARQ) feedback information for the first V2X message.
  • HARQ hybrid automatic repeat request
  • the AS layer of the first terminal device determines a first transceiving mode according to the received feedback information, and performs settings for transceiving V2X messages according to the foregoing first transceiving mode.
  • the above-mentioned first transceiver mode is a no-transmit and no-receive mode, or a transmit-no-receive mode, or a receive-no-transmit mode, a low-frequency transmit-and-receive mode, or a high-frequency transmit-and-receive mode.
  • the access layer is set to not listen to the V2X messages of the PC5 interface, or to disable the function of receiving V2X messages; for the mode of only receiving and not sending, the AS is set to not send the V2X of the PC5 interface.
  • the access layer can set a lower frequency according to the terminal device implementation or use a low frequency configured on the network side (such as PCF), such as 1HZ; for high-frequency sending and receiving In the receiving mode, the access layer can set a higher frequency according to the implementation of the terminal device or use the high frequency configured by the network side (such as PCF), such as 10HZ.
  • the AS layer is HARQ feedback information according to the received feedback information, and steps 601 and 602 may be understood as the first terminal device perceives the surrounding environment information through the HARQ mechanism.
  • step 603 is as follows: the AS layer of the first terminal device determines the above-mentioned first transceiving mode according to the number of received feedback information (for example, HARQ feedback information); wherein, the number of feedback information received by the AS layer It may be the number of second terminal devices that send feedback information to the first terminal device. It can be understood that, in this implementation manner, it is assumed that a certain second terminal device sends more than one piece of feedback information to the first terminal device, and the first terminal device considers that the number of feedback information from the second terminal device is 1.
  • any feedback information received by the AS layer of the second terminal device includes the location information of the second terminal device that sent the feedback information or the distance between the second terminal device that sent the feedback information and the first terminal device.
  • the AS layer of the first terminal device takes the number of terminal devices whose distance from each second terminal device and the above-mentioned first terminal device is less than the distance threshold as the received valid feedback information quantity.
  • the above distance information is obtained by the second terminal device according to the position information of the first terminal device and its own position information, or obtained by other methods such as measurement by its vehicle-mounted radar.
  • the first terminal device may also determine the distance from each second terminal device by itself (for example, by using a vehicle-mounted radar).
  • the above distance thresholds (eg, 500 meters, 1 kilometer, 5 kilometers, etc.) may be pre-configured at the factory, or may be configured by the operator's PCF, or may be configured by the first terminal device according to actual requirements.
  • the feedback information sent by these second terminal equipment is considered by the AS layer of the first terminal equipment. It is effective feedback information in order to more accurately determine the sending and receiving mode.
  • the first terminal device determines that the first transceiving mode is the low-frequency sending and receiving mode; or when the quantity of received feedback information is less than a second quantity threshold (for example, 20), the first terminal device determines that the first transceiving mode is the above-mentioned sending-only and no-receiving mode or the above-mentioned receiving-only and no-receiving mode.
  • a first number threshold for example, 50
  • a second quantity threshold for example, 20
  • the second quantity threshold is less than the first quantity threshold; or, in the case where the quantity of the received feedback information is less than the third quantity threshold (for example, 3), the first terminal device determines the first sending and receiving mode
  • the above-mentioned third quantity threshold is less than the above-mentioned second quantity threshold; or, in the case where the quantity of the received feedback information is not less than the above-mentioned first quantity threshold, the above-mentioned first terminal device determines that the above-mentioned first A transceiving mode is the above-mentioned high frequency transmitting and receiving mode.
  • the AS layer of the first terminal device notifies the V2X application layer of the first terminal device of the first transceiving mode, and the V2X application layer performs settings for transceiving V2X messages according to the first transceiving mode.
  • the V2X access layer may directly notify the V2X application layer of the first terminal device of the first transceiver mode, or the V2X access layer may indirectly notify the V2X application layer of the first terminal device through the V2X layer.
  • the above-mentioned first transmission and reception mode is notified.
  • the V2X application layer is set to not need to generate V2X messages; for the low-frequency sending and receiving modules, the V2X application layer is set to a lower frequency, such as 1HZ; for the mode of not sending and not receiving, the V2X application layer It is set to not need to generate V2X messages, and the failure to receive V2X messages will not be regarded as exceptions; for the mode of only sending and not receiving V2X messages, the application layer is set to not treat failure to receive V2X messages as exceptions; for high-frequency sending and receiving modules, the V2X application layer Set a higher frequency, such as 10HZ.
  • the first terminal device uses the first sending and receiving mode to transmit the V2X message.
  • the V2X application layer does not need to generate V2X messages; or, for the low-frequency sending and receiving mode, the V2X application layer reduces the sending/receiving frequency of V2X messages accordingly.
  • the first terminal device senses surrounding information, and determines accordingly to transmit the V2X message by using the more energy-saving first transceiver mode, which can not only ensure the traffic safety of pedestrians and vehicles but also save energy.
  • FIG. 4 to FIG. 6 describe the method flow for determining the mode of transmitting the V2X message by the first terminal device itself.
  • the present application also provides a solution in which the first terminal device obtains a mode for transmitting V2X messages through other devices.
  • FIG. 7 is an interaction flowchart of another communication method provided by an embodiment of the present application. As shown in Figure 7, the method includes:
  • the first terminal device sends a first message to the first configuration network element through the AMF.
  • the above-mentioned first message is used to obtain the sending and receiving mode of the first terminal device.
  • the first message is a transceiving mode request
  • the transceiving mode request is used to request to acquire the transceiving mode of the first terminal device.
  • the first configuration network element is a PCF.
  • the first terminal device may send the first message to the first configuration network element through the Uu interface. That is to say, the first terminal device may request the first configuration network element through the Uu interface for the transmission and reception mode of the PC5 communication, that is, the transmission and reception mode to be adopted by the first terminal device.
  • the above-mentioned first message carries at least one of the following information: a second terminal type, a second service type, a second communication type, and location information of the above-mentioned first terminal device; wherein, the above-mentioned second terminal type is the above-mentioned
  • the terminal type of the terminal device requested by the first terminal device to be discovered is the service type of the V2X message to be transmitted by the above-mentioned first terminal device
  • the above-mentioned second communication type is to be used by the above-mentioned first terminal device to transmit the V2X message. Communication type.
  • the above-mentioned second communication type can be understood as the communication type of PV5 that the above-mentioned first terminal device wants to perform, such as multicast or broadcast.
  • the above-mentioned second service type may be understood as the service type of the V2X message that the above-mentioned first terminal device wants to transmit.
  • step 701 the first terminal device sends the first message to the first configuration network element through the AMF when it is determined that the mode for transmitting the V2X message can be currently set.
  • the first terminal device determines, according to the service type and/or communication type of the V2X message, whether it can set its own sending and receiving mode, that is, the mode for transmitting the V2X message.
  • the first terminal device before executing step 701, the first terminal device first determines whether the first terminal device can currently set the mode for transmitting V2X messages; if the mode for transmitting V2X messages can be set, execute step 701; if the mode for transmitting V2X messages cannot be set The mode of the V2X message (that is, the mode of transmitting the V2X message cannot be adjusted), the first terminal device does not perform the operation in FIG. 7 .
  • the first configuration network element sends a second message to the second configuration network element.
  • the above-mentioned second message is used to acquire the transceiving mode of the above-mentioned first terminal device.
  • the first message is a transceiving mode request
  • the transceiving mode request is used to request to acquire the transceiving mode of the first terminal device.
  • the second message carries at least one of the following information: a second terminal type, a second service type, a second communication type, the location information of the first terminal device, and the identifier of the first terminal device; wherein , the above-mentioned second terminal type is the terminal type of the terminal device that the above-mentioned first terminal device requests to discover, the above-mentioned second service type is the service type of the V2X message to be transmitted by the above-mentioned first terminal device, and the above-mentioned second communication type is the above-mentioned first The communication type to be used by the terminal device to transmit V2X messages.
  • the second message carries at least one of the second terminal type, the second service type, the second communication type, the location information of the first terminal device, and the identifier of the first terminal device.
  • the second configuration network element determines, in response to the second message, a third transceiving mode to be adopted by the first terminal device.
  • the foregoing second configuration network element is an NWDAF network element.
  • the above-mentioned third transceiving mode is a no-transmit and no-receive mode, or a transmit-no-receive mode, or a receive-no-transmit mode, a low-frequency transmit-and-receive mode, or a high-frequency transmit-and-receive mode.
  • the second configuration network element determines, according to peripheral information of the first terminal device, a third transceiving mode to be adopted by the first terminal device. For example, the second configuration network element determines the third transceiver mode to be adopted by the first terminal device according to the location of the first terminal device and the locations, terminal types, service types, etc. of other terminal devices around the first terminal device. Wherein, if the second message does not carry the location information of the first terminal device, the second configuration network element itself can obtain the location information of the first terminal device through the identifier of the first terminal device.
  • step 703 is as follows: the above-mentioned second configuration network element counts the number of third terminal devices that satisfy the second matching condition corresponding to the above-mentioned second information; The number of three terminal devices determines the third transceiver mode of the first terminal device; wherein, the second matching condition satisfied by any third terminal device includes at least one of the following: the terminal type of any third terminal device. It belongs to the above-mentioned second terminal type, any of the above-mentioned third terminal equipment accepts the above-mentioned second service type, any of the above-mentioned third terminal equipment accepts the above-mentioned second communication type, or any of the above-mentioned third terminal equipment and the above-mentioned first terminal equipment.
  • the second message carries the second terminal type, and the second matching condition corresponding to the second information includes that the terminal type of the third terminal device is the second terminal type.
  • the second terminal type is the V-UE type
  • the second configuration network element only counts the V-UE type terminal equipment around the first terminal equipment (for example, the terminal equipment with a distance of less than 100 meters from the first terminal equipment) ).
  • the second message carries the second service type, and the second matching condition corresponding to the second information includes that the third terminal device accepts the second service type.
  • the second service type is an anti-collision message
  • the second configuration network element only counts the number of terminal devices around the first terminal device that are interested in anti-collision.
  • the second message carries the second communication type
  • the second matching condition corresponding to the second information includes that the third terminal device accepts the second communication type.
  • the second configuration network element only counts the number of terminal devices around the first terminal device that are interested in multicast communication.
  • the second message carries the second terminal type, the second service type, and the identifier of the first terminal device; the third terminal device that satisfies the second matching condition corresponding to the second information is located around the first terminal device. Terminal equipment of the second terminal type interested in V2X messages of the second service type.
  • the second message carries the second terminal type, the second service type, the second communication type, and the identifier of the first terminal device; the third terminal device that satisfies the second matching condition corresponding to the second information is located in Terminal devices of the second terminal type that are interested in V2X messages of the second service type and the second communication type around the first terminal device.
  • a terminal device located around the first terminal device may be a terminal device whose distance from the first terminal device is less than a certain distance threshold (eg, 50 meters, 60 meters, etc.).
  • the second configuration network element can obtain the location information of each terminal device from the core network such as AMF or a location server (LCS), and the location information can be the cell identifier of the cell where the terminal device is located, or the base station identifier, or the tracking area identifier. , or latitude and longitude information, or geographic location information, etc., the location of each terminal device can also be obtained from the application server, and the location information can be the latitude and longitude information of the terminal device, or geographic location information, etc., and the location of each terminal device can also be obtained in other ways. , which is not limited in this application.
  • the second configuration network element determines the third transceiving mode of the first terminal device according to the number of third terminal devices that satisfy the second matching condition corresponding to the second information in the following manner: When the number of third terminal devices that satisfy the second matching condition corresponding to the second information is less than the fourth number threshold, the second configuration network element determines that the third transceiving mode is the low-frequency sending and receiving mode; or In the case where the number of third terminal devices that satisfy the second matching condition corresponding to the second information is less than the fifth number threshold, the second configuration network element determines that the third transceiving mode is the above-mentioned sending-only and no-receiving mode or the above-mentioned Only in the mode of receiving and not sending, and the above-mentioned fifth quantity threshold is less than the above-mentioned fourth quantity threshold; or, when the number of third terminal devices that satisfy the second matching condition corresponding to the above-mentioned second information is less than the sixth quantity threshold, the above-mentioned The second
  • the first configuration network element receives a response to the second message sent by the second configuration network element to the second message.
  • the response to the second message carries the information of the third transceiving mode.
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure time of the third transceiving mode.
  • the first time information may be a duration timer or a duration time value.
  • the first configuration network element sends a response to the first message to the first terminal device through the AMF.
  • the response to the first message carries information of the third transceiving mode.
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure time of the third transceiving mode.
  • the first configuration network element eg PCF
  • UE policy UE policy information
  • the V2X layer of the first terminal device notifies the V2X application layer of the first terminal device of the third transceiving mode, and the V2X application layer performs settings for sending and receiving V2X messages according to the third transceiving mode.
  • the V2X layer of the first terminal device notifies the V2X access layer of the first terminal device of the third transmission and reception mode, and the V2X access layer performs V2X message transmission and reception settings according to the third transmission and reception mode.
  • the first terminal device may perform only one of steps 705 and 707 to implement the sending and receiving settings of the V2X message. That is to say, the first terminal device may perform step 706 without performing step 707, may also perform step 707 without performing step 706, and may also perform step 706 and step 707.
  • the V2X message is transmitted by using the third sending and receiving mode.
  • the first terminal device transmits the V2X message by using a fourth transceiving mode, where the above-mentioned fourth transceiving mode is the above-mentioned no-sending and no-receiving mode, or the above-mentioned only sending and receiving mode. No reception mode, or the above-mentioned receive-only and no-transmit mode, or the above-mentioned low-frequency transmission and reception mode, or the above-mentioned high-frequency transmission and reception mode.
  • the second configuration network element determines the transmission and reception mode to be adopted by the first terminal device according to the surrounding information of the first terminal device, and feeds it back to the first terminal device, which can save the communication energy consumption of the first terminal device , to improve the user experience.
  • FIG. 8 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application.
  • the communication apparatus may be configured to perform the actions of the first terminal device in the foregoing embodiments.
  • the communication apparatus may be the first terminal device, or may be a chip system located on the first terminal device.
  • the first terminal device includes:
  • the processing module 802 is configured to determine, according to information from the at least one second terminal device, a first transceiving mode of the first terminal device; the first transceiving mode is a no-transmit and no-receive mode, or a transmit-no-receive mode, or Only receive without sending mode, or low-frequency sending and receiving mode, or high-frequency sending and receiving mode; wherein, the above-mentioned first transceiver mode is used for the above-mentioned first terminal device to transmit the vehicle-to-everything V2X message.
  • the transceiver module 801 is further configured to transmit the V2X message by adopting the above-mentioned first transceiver mode.
  • the above-mentioned first terminal device supports at least two transceiver modes for transmitting V2X messages with different power consumption; the processing module 802 is specifically configured to, according to the information from the above-mentioned at least one second terminal device and the above-mentioned first The support capability of the terminal device determines the first transceiving mode of the first terminal device.
  • the transceiver module 801 is further configured to send a discovery request in a broadcast or multicast manner, and the foregoing discovery request is used to obtain the information required by the first terminal device to determine the transceiver mode for transmitting the V2X message;
  • the transceiver module 801 is specifically configured to receive feedback information sent by the at least one second terminal device in response to the discovery request, and the information from the at least one second terminal device includes the information sent from the at least one second terminal device in response to the discovery request. feedback information.
  • the above-mentioned discovery request carries at least one of the following information: a first terminal type, a first service type, a first communication type, and location information of the above-mentioned first terminal device; wherein, the above-mentioned first terminal
  • the type is the terminal type of the terminal device that the first terminal device requests to discover
  • the first service type is the service type of the V2X message to be transmitted by the first terminal device
  • the first communication type is the transmission of the V2X message by the first terminal device.
  • the transceiver module 801 is further configured to send the first V2X message through broadcast or multicast;
  • the transceiver module 801 is specifically configured for the first terminal device to receive feedback information for the first V2X message from the at least one second terminal device, where the information from the at least one second terminal device includes the information from the at least one second terminal device. Feedback information of the second terminal device for the above-mentioned first V2X message.
  • the transceiver module 801 is further configured to receive information from the at least one second terminal device in a broadcast and/or multicast manner.
  • the processing module 802 is specifically configured to determine the number of the at least one second terminal device according to the information from the at least one second terminal device; and determine the number of the at least one second terminal device according to the number of the at least one second terminal device.
  • the distance between any one of the at least one second terminal device and the first terminal device is less than a distance threshold.
  • the information of any one of the above-mentioned terminal devices includes location information of any of the above-mentioned terminal devices.
  • the processing module 802 is specifically configured to, in the case where the number of the at least one second terminal device is less than the first number threshold, the first terminal device determines that the first transceiving mode is the low frequency sending and receiving mode; or in the case where the number of the at least one second terminal device is less than the second number threshold, the first terminal device determines that the first sending and receiving mode is the above-mentioned only sending and not receiving mode or the above-mentioned only receiving and not sending mode, the second number threshold is less than the first number threshold; or, in the case where the number of the at least one second terminal device is less than the third number threshold, the first terminal device determines that the first sending and receiving mode is the above non- In the sending and not receiving mode, the above-mentioned third quantity threshold is less than the above-mentioned second quantity threshold; or, in the case that the quantity of the above-mentioned at least one second terminal device is not less than the above-mentioned first quantity threshold, the above-menti
  • the processing module 802 is specifically configured for the first terminal device to determine the first transceiving mode of the first terminal device according to the quantity of feedback information from the at least one second terminal device.
  • the distance between any one of the at least one second terminal device and the first terminal device is less than a distance threshold.
  • the feedback information of any one of the above-mentioned terminal devices includes the position information of any of the above-mentioned terminal devices.
  • the feedback information of the at least one second terminal device includes the location information of each second terminal device; the processing module 802 is further configured to, according to the location information of each second terminal device and the first terminal device, For the location information of the device, the number of terminal devices whose distance from the at least one second terminal device and the first terminal device is less than the distance threshold is used as the number of feedback information from the at least one second terminal device.
  • the processing module 802 is further configured to determine a distance from each of the second terminal devices in the at least one second terminal device, and compare the at least one second terminal device with the first terminal device. The number of terminal devices whose distance between them is smaller than the distance threshold is used as the number of feedback information from the at least one second terminal device.
  • the processing module 802 is specifically configured to, in the case that the quantity of feedback information from the at least one second terminal device is less than the first quantity threshold, the first terminal device determines the first transceiving mode is the above-mentioned low-frequency sending and receiving mode; or in the case that the quantity of feedback information from the at least one second terminal device is less than the second quantity threshold, the above-mentioned first terminal device determines that the above-mentioned first sending and receiving mode is the above-mentioned only sending and not sending.
  • the above-mentioned second quantity threshold is less than the above-mentioned first quantity threshold; or, in the case where the quantity of feedback information from the above-mentioned at least one second terminal device is less than the third quantity threshold, the above-mentioned No.
  • a terminal device determines that the first transceiving mode is the above-mentioned non-transmitting and non-receiving mode, and the above-mentioned third quantity threshold is less than the above-mentioned second quantity threshold; or, the quantity of feedback information from the at least one second terminal equipment is not less than the above-mentioned first quantity threshold In the case of a number threshold, the first terminal device determines that the first transceiving mode is the high-frequency sending and receiving mode.
  • the first transceiving mode is determined by the V2X layer of the first terminal device, and the method further includes: the V2X layer of the first terminal device notifying the V2X application layer of the first terminal device In the above-mentioned first sending and receiving mode, the V2X application layer performs the sending and receiving settings of V2X messages according to the above-mentioned first sending and receiving mode; and/or, the V2X layer of the above-mentioned first terminal device notifies the V2X access layer of the above-mentioned first terminal device of the above-mentioned first Transceiver mode, the V2X access layer performs settings for sending and receiving V2X messages according to the first transceiving mode.
  • the above-mentioned first sending and receiving mode is determined by the V2X access layer of the above-mentioned first terminal device; the processing module 802 is further configured to perform sending and receiving settings of V2X messages according to the above-mentioned first sending and receiving mode.
  • the transceiver module 801 is further configured to, after the first transceiver mode fails, the first terminal device transmits the V2X message by using the second transceiver mode, and the second transceiver mode is the above-mentioned no-send and no-receive mode , or the above-mentioned transmit-only and no-receive mode, or the above-mentioned receive-only and no-transmit mode, or the above-mentioned low-frequency transmit and receive mode, or the above-mentioned high-frequency transmit and receive mode.
  • FIG. 9 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application.
  • the communication apparatus may be used to execute the actions of the second terminal device in the foregoing embodiments.
  • the communication device may be the second terminal device, or may be a chip system located on the second terminal device. As shown in Figure 9, the second terminal device includes:
  • the processing module 902 is configured to generate feedback information for the above-mentioned discovery request, and the above-mentioned feedback information is used for the above-mentioned first terminal device to determine a first transceiving mode, and the above-mentioned first transceiving mode is a no-send and no-receive mode, or only a transmit-no-receive mode, Or only receive and not send mode, or low-frequency sending and receiving mode, or high-frequency sending and receiving mode; wherein, the above-mentioned first transceiver mode is used for the above-mentioned first terminal device to transmit the vehicle-to-everything V2X message;
  • the transceiver module 901 is further configured to send the above feedback information.
  • the above-mentioned discovery request carries at least one of the following information: a first terminal type, a first service type, a first communication type, and location information of the above-mentioned first terminal device; wherein, the above-mentioned first terminal The type is the terminal type of the terminal device that the first terminal device requests to discover, the first service type is the service type of the V2X message to be transmitted by the first terminal device, and the first communication type is the transmission of the V2X message by the first terminal device.
  • the above-mentioned transceiver module is specifically configured to send the above-mentioned feedback information for the above-mentioned discovery request when the first matching condition is satisfied; wherein, the above-mentioned first matching condition includes at least one of the following: the above-mentioned second terminal device
  • the terminal type belongs to the above-mentioned first terminal type, the above-mentioned second terminal equipment accepts the above-mentioned first service type, the above-mentioned second terminal equipment accepts the above-mentioned first communication type, or the distance between the above-mentioned second terminal equipment and the above-mentioned first terminal equipment less than the distance threshold.
  • the foregoing feedback information carries the location information of the foregoing second terminal device.
  • FIG. 10 is a schematic structural diagram of a first terminal device according to an embodiment of the present application. As shown in Figure 10, the first terminal device includes:
  • a transceiver module 1001 configured to send a first message to a first configuration network element, where the first message is used to obtain a transceiver mode of the first terminal device;
  • the transceiver module 1001 is further configured to receive a response to the first message from the first configuration network element, where the response to the first message carries information of a third transceiver mode;
  • a processing module 1002 configured to obtain the third transceiving mode according to the response of the first message
  • the transceiver module 1001 is further configured to transmit V2X messages using the third transceiver mode;
  • the third transceiver mode is a no-send and no-receive mode, or only a transmit-and-no-receive mode, or only a receive-no-send mode, or a low-frequency sending and receiving mode mode, or high frequency transmit and receive mode.
  • the above-mentioned first message carries at least one of the following information: a second terminal type, a second service type, a second communication type, and the location information of the above-mentioned first terminal device; wherein the above-mentioned second The terminal type is the terminal type of the terminal device that the first terminal device requests to discover, the second service type is the service type of the V2X message to be transmitted by the first terminal device, and the second communication type is the V2X transmission by the first terminal device.
  • the type of communication the message is to take.
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure moment of the third transceiving mode.
  • the transceiver module 1001 is further configured to use a fourth transceiver mode to transmit the V2X message after the processing module determines that the third transceiver mode is invalid according to the first time information, and the fourth transceiver mode is the above The no-transmit-no-receive mode, or the above-mentioned transmit-only-no-receive mode, or the above-mentioned receive-only and no-transmit mode, or the above-mentioned low-frequency transmit and receive mode, or the above-mentioned high-frequency transmit and receive mode.
  • FIG. 11 is a schematic structural diagram of a first configuration network element according to an embodiment of the present application. As shown in Figure 11, the first configuration network element includes:
  • a processing module 1102 configured to generate a response to the above-mentioned first message
  • the transceiver module 1101 is further configured to send a response to the first message, where the response to the first message carries information of the third transceiver mode.
  • the transceiver module 1101 is further configured to send a second message to the second configuration network element, where the second message is used to acquire the transceiver mode of the first terminal device;
  • the transceiver module 1101 is further configured to receive a response to the second message from the second configuration network element, where the response to the second message carries the information of the third transceiver mode.
  • the second message carries at least one of the following information: a second terminal type, a second service type, a second communication type, location information of the first terminal device, and the first terminal device.
  • the second terminal type is the terminal type of the terminal device that the first terminal device requests to discover
  • the second service type is the service type of the V2X message to be transmitted by the first terminal device
  • the second communication type The communication type to be used for transmitting the V2X message for the above-mentioned first terminal device.
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure moment of the third transceiving mode.
  • the processing module 1102 is further configured to determine the third transceiving mode of the first terminal device according to the number of fourth terminal devices that satisfy the third matching condition corresponding to the second information; wherein, The above-mentioned third matching condition satisfied by any fourth terminal device includes at least one of the following: the terminal type of the above-mentioned any fourth terminal device belongs to the above-mentioned second terminal type, and the above-mentioned any fourth terminal device accepts the above-mentioned second service type, Any of the above-mentioned fourth terminal devices accepts the above-mentioned second communication type, or the distance between any of the above-mentioned fourth terminal devices and the above-mentioned first terminal device is less than a distance threshold.
  • the processing module 1102 is specifically configured to, in the case that the number of fourth terminal devices that satisfy the third matching condition corresponding to the second information is less than the fourth number threshold, configure the network element for the first configuration above. Determine that the third transceiving mode is the low-frequency sending and receiving mode; or when the number of fourth terminal devices that satisfy the third matching condition corresponding to the second information is less than the fifth number threshold, the first configuration network It is determined that the above-mentioned third transceiving mode is the above-mentioned only sending and not receiving mode or the above-mentioned only receiving and not transmitting mode, and the above-mentioned fifth quantity threshold is smaller than the above-mentioned fourth quantity threshold; In the case where the number of four terminal devices is less than the sixth number threshold, the first configuration network element determines that the third transceiving mode is the non-transmitting and non-receiving mode, and the sixth number threshold is less than the fifth number threshold; or, in In the case where the number of fourth terminal devices
  • the processing module 1102 is further configured to determine the third transceiving mode to be adopted by the first terminal device according to the peripheral information of the first terminal device.
  • FIG. 12 is a schematic structural diagram of a second configuration network element according to an embodiment of the present application. As shown in Figure 12, the second configuration network element includes:
  • a transceiver module 1201, configured to receive a second message, where the second message is used to acquire a transceiver mode of the first terminal device;
  • a processing module 1202 configured to generate a response to the above-mentioned second message
  • the transceiver module 1201 is further configured to send a response to the second message, where the response to the second message carries information of the third transceiver mode.
  • the second message carries at least one of the following information: a second terminal type, a second service type, a second communication type, location information of the first terminal device, and the first terminal device.
  • the second terminal type is the terminal type of the terminal device that the first terminal device requests to discover
  • the second service type is the service type of the V2X message to be transmitted by the first terminal device
  • the second communication type The communication type to be used for transmitting the V2X message for the above-mentioned first terminal device.
  • the processing module 1202 is further configured to determine the third transceiving mode of the first terminal device according to the number of third terminal devices that satisfy the second matching condition corresponding to the second information; wherein, The above-mentioned second matching condition satisfied by any third terminal device includes at least one of the following: the terminal type of the above-mentioned any third terminal device belongs to the above-mentioned second terminal type, and the above-mentioned any third terminal device accepts the above-mentioned second service type, Any one of the above-mentioned third terminal devices accepts the above-mentioned second communication type, or the distance between any of the above-mentioned third terminal devices and the above-mentioned first terminal device is less than a distance threshold.
  • the processing module 1202 is specifically configured to, in the case where the number of third terminal devices that satisfy the second matching condition corresponding to the second information above is less than the fourth quantity threshold, configure the network element for the above second configuration Determine that the third transceiving mode is the low-frequency sending and receiving mode; or when the number of third terminal devices that satisfy the second matching condition corresponding to the second information is less than the fifth number threshold, the second configuration network It is determined that the above-mentioned third transceiving mode is the above-mentioned only sending and not receiving mode or the above-mentioned only receiving and not transmitting mode, and the above-mentioned fifth quantity threshold is smaller than the above-mentioned fourth quantity threshold; or, in the second matching condition corresponding to the second information is satisfied.
  • the above-mentioned second configuration network element determines that the above-mentioned third transceiving mode is the above-mentioned non-transmitting and non-receiving mode, and the above-mentioned sixth number threshold is less than the above-mentioned fifth number threshold; or, in When the number of third terminal devices that satisfy the second matching condition corresponding to the second information is not less than the fourth threshold, the second configuration network element determines that the third transceiving mode is the high-frequency sending and receiving mode .
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure moment of the third transceiving mode.
  • the processing module 1202 is further configured to determine the third transceiving mode to be adopted by the first terminal device according to the peripheral information of the first terminal device.
  • the processing module 1202 is further configured to count the number of third terminal devices that satisfy the second matching condition corresponding to the foregoing second information.
  • the processing module 1202 is specifically configured to determine the third transceiver to be used by the first terminal device according to the current location of the first terminal device and the surrounding environment information of the first terminal device model.
  • the information of the third transceiving mode includes first time information, and the first time information is used to determine the failure moment of the third transceiving mode.
  • each module in the first terminal device, the second terminal device, the first configuration network element, and the second configuration network element is only a division of logical functions, and can be fully or partially integrated into a physical device in actual implementation. Physically, it can also be physically separated.
  • each of the above modules can be a separately established processing element, or can be integrated into a certain chip of the terminal to be implemented, in addition, it can also be stored in the storage element of the controller in the form of program code, and processed by a certain one of the processor.
  • the component calls and executes the functions of the above modules.
  • each module can be integrated together or can be implemented independently.
  • the processing element here may be an integrated circuit chip with signal processing capability.
  • each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.
  • the processing element can be a general-purpose processor, such as a network processor or a central processing unit (English: central processing unit, CPU for short), or can be one or more integrated circuits configured to implement the above method, such as: one or more Multiple specific integrated circuits (English: application-specific integrated circuit, referred to as: ASIC), or, one or more microprocessors (English: digital signal processor, referred to as: DSP), or, one or more field programmable gates Array (English: field-programmable gate array, referred to as: FPGA) and so on.
  • ASIC application-specific integrated circuit
  • DSP digital signal processor
  • FPGA field programmable gate array
  • FIG. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the communication apparatus in FIG. 13 may be the above-mentioned first terminal equipment, may also be the above-mentioned second terminal equipment, may also be the above-mentioned first configuration network element, or may be the above-mentioned second configuration network element.
  • the communication apparatus 130 includes at least one processor 1320, configured to implement the function of the first terminal device in the method provided by the embodiment of the present application; or, configured to implement the function of the second terminal device in the method provided by the embodiment of the present application; or is used to implement the function of the first configuration network element in the method provided by the embodiment of the present application; or, used to implement the function of the second configured network element in the method provided by the embodiment of the present application.
  • the communication device 130 may also include a transceiver 1310 . Transceivers are used to communicate with other devices/devices over a transmission medium.
  • the processor 1320 uses the transceiver 1310 to send and receive data and/or signaling, and is used to implement the methods in the above method embodiments.
  • the communication device 130 may further include at least one memory 1330 for storing program instructions and/or data.
  • Memory 1330 and processor 1320 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • Processor 1320 may cooperate with memory 1330.
  • Processor 1320 may execute program instructions stored in memory 1330 . At least one of the at least one memory may be included in the processor.
  • the specific connection medium between the transceiver 1310, the processor 1320, and the memory 1330 is not limited in the embodiments of the present application.
  • the memory 1330, the processor 1320, and the transceiver 1310 are connected through a bus 1340 in FIG. 13.
  • the bus is represented by a thick line in FIG. 13, and the connection between other components is only for schematic illustration. , is not limited.
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used in FIG. 13, but it does not mean that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which can implement or
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the transceiver 1310 implements the function of the transceiver module 801 or the function of the transceiver module 1001
  • the processor 1320 implements the function of the processing module 802 or the function of the processing module 1002
  • the transceiver 1310 implements the function of the transceiver module 901
  • the processor 1320 implements the function of the processing module 902
  • the transceiver 1310 implements the function of the transceiver module 1101
  • the processor 1320 implements the function of the processing module 1102.
  • the transceiver 1310 implements the function of the transceiver module 1201
  • the processor 1320 implements the function of the processing module 1202 .
  • the present application also provides a computer-readable storage medium, where computer codes are stored in the computer-readable storage medium, and when the computer codes are executed on the computer, the computer is made to execute the methods of the above embodiments.
  • the present application also provides a computer program product, the computer program product includes computer code or computer program, when the computer code or computer program is run on a computer, the communication method in the above embodiment is executed.
  • the present application further provides a communication system, including the above-mentioned first configuration network element and second configuration network element.
  • the communication system further includes the above-mentioned first terminal device.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de la présente demande concernent un procédé de communication et un appareil de communication. Ledit procédé comprend les étapes suivantes : un premier dispositif terminal reçoit des informations d'au moins un second dispositif terminal ; le premier dispositif terminal détermine un premier mode d'émission-réception en fonction des informations provenant du ou des seconds dispositifs terminaux, le premier mode d'émission-réception étant un mode quelconque parmi un mode de non-envoi et de non-réception, un mode d'envoi uniquement et de non-réception, un mode de réception uniquement et de non-envoi, et un mode d'émission et de réception basse fréquence, le premier mode d'émission-réception étant un mode pris en charge par le premier dispositif terminal pour transmettre un message V2X, et le premier dispositif terminal prenant également en charge un mode d'émission et de réception haute fréquence, le mode d'émission et de réception basse fréquence ayant une fréquence de transmission d'un message V2X inférieur au mode d'envoi et de réception haute fréquence ; et le premier dispositif terminal utilise le premier mode d'émission-réception pour transmettre un message V2X afin de pouvoir réduire la perte d'énergie électrique provoquée par le dispositif terminal transmettant un message V2X.
PCT/CN2020/108734 2020-08-12 2020-08-12 Procédé de communication et appareil de communication WO2022032536A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105144757A (zh) * 2013-04-26 2015-12-09 三星电子株式会社 通信模式下的通信服务
WO2018012949A1 (fr) * 2016-07-15 2018-01-18 삼성전자 주식회사 Procédé et appareil de commande de l'état d'un terminal dans un système de communication mobile
CN109586943A (zh) * 2017-09-28 2019-04-05 维沃移动通信有限公司 资源切换配置方法、装置和设备
CN110557813A (zh) * 2018-06-04 2019-12-10 电信科学技术研究院有限公司 一种节能状态转换的方法、终端及基站
CN111328040A (zh) * 2018-12-13 2020-06-23 普天信息技术有限公司 车联网v2x的通信模式指示方法及装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105144757A (zh) * 2013-04-26 2015-12-09 三星电子株式会社 通信模式下的通信服务
WO2018012949A1 (fr) * 2016-07-15 2018-01-18 삼성전자 주식회사 Procédé et appareil de commande de l'état d'un terminal dans un système de communication mobile
CN109586943A (zh) * 2017-09-28 2019-04-05 维沃移动通信有限公司 资源切换配置方法、装置和设备
CN110557813A (zh) * 2018-06-04 2019-12-10 电信科学技术研究院有限公司 一种节能状态转换的方法、终端及基站
CN111328040A (zh) * 2018-12-13 2020-06-23 普天信息技术有限公司 车联网v2x的通信模式指示方法及装置

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