WO2019061134A1 - Procédé de transmission de données basé sur v2x, terminal utilisateur, véhicule et système - Google Patents

Procédé de transmission de données basé sur v2x, terminal utilisateur, véhicule et système Download PDF

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Publication number
WO2019061134A1
WO2019061134A1 PCT/CN2017/103915 CN2017103915W WO2019061134A1 WO 2019061134 A1 WO2019061134 A1 WO 2019061134A1 CN 2017103915 W CN2017103915 W CN 2017103915W WO 2019061134 A1 WO2019061134 A1 WO 2019061134A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
user terminal
base station
data packet
communication unit
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Application number
PCT/CN2017/103915
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English (en)
Chinese (zh)
Inventor
冯大权
郑灿健
张胜利
何春龙
Original Assignee
深圳大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 深圳大学 filed Critical 深圳大学
Priority to PCT/CN2017/103915 priority Critical patent/WO2019061134A1/fr
Publication of WO2019061134A1 publication Critical patent/WO2019061134A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • 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 invention relates to the technical field of V2X (Vehicle to X), and particularly relates to a V2X-based data transmission method, a user terminal, a vehicle and a system.
  • V2X Vehicle to X
  • Traditional cellular communication methods include direct transmission and relay decoding and forwarding transmission.
  • direct transmission the user terminal directly transmits data to the base station to implement direct communication between the user and the base station; in the relay decoding and forwarding transmission, the user terminal transmits data to the stationary relay, and relays the data to the base station, wherein the relay only It has forwarding and decoding functions and does not store the above data.
  • Both of the above transmission methods have certain limitations, and are not well-suited for future wireless networks to support a variety of different QoS (Quality Of Service, quality service).
  • QoS Quality Of Service
  • the main disadvantages are: when the user terminal is located at the edge of the network, if it is necessary to send a file that is not sensitive to the delay, the energy consumption required for communication will rise sharply, which will affect the battery life of the user terminal, that is, the traditional cellular communication.
  • the method does not make good use of the mobility of the relay to effectively reduce the energy consumption required for transmission, resulting in higher energy consumption for information transmission and shortening the battery life of the user terminal.
  • the main purpose of the present invention is to provide a V2X-based data transmission method, a user terminal, a vehicle, and a system, which are designed to solve the problem in the prior art that when the user terminal is located at the edge of the network, the energy consumption required for data transmission is high, and thus A technical problem of shortening the battery life of the user terminal.
  • a first aspect of the present invention provides a data transmission method based on V2X, characterized in that the method includes:
  • the data packet to be transmitted is uploaded to the in-vehicle communication unit corresponding to the vehicle.
  • the step of uploading the data packet to be transmitted to the in-vehicle communication unit corresponding to the vehicle includes:
  • the data packet is uploaded to the in-vehicle communication unit corresponding to the vehicle at an actual upload rate not lower than the minimum upload rate.
  • a second aspect of the present invention provides a V2X-based data transmission method, the method comprising:
  • the corresponding vehicle communication unit of the vehicle After receiving the data packet uploaded by the user terminal, the corresponding vehicle communication unit of the vehicle saves the received data packet in a preset memory;
  • the data packet stored in the memory is transmitted to a base station capable of wirelessly communicating with the in-vehicle communication unit.
  • the step of sending the data packet saved in the memory to a base station capable of wirelessly communicating with the in-vehicle communication unit includes:
  • the data packet is transmitted to the base station at an actual transmission rate not lower than the minimum transmission rate when the vehicle passes through a communicable area of the base station.
  • a third aspect of the present invention provides a user terminal, where the user terminal includes:
  • a first detecting module configured to detect, when the user terminal has a data packet to be transmitted, whether the user terminal is in a communication coverage of any base station;
  • a second detecting module configured to detect, when the user terminal is not within the communication coverage of any base station, whether there is a vehicle capable of providing data transmission in the communicable area of the user terminal;
  • the uploading module is configured to upload the data packet to be transmitted to the in-vehicle communication unit corresponding to the vehicle when there is a vehicle capable of providing data transmission in the communicable area of the user terminal.
  • the uploading module includes:
  • a first determining module configured to determine, according to a location, a traveling speed, and a traveling direction of the vehicle with respect to the user terminal, a length of time required for the vehicle to pass through a communicable area of the user terminal;
  • a first calculating module configured to calculate a minimum upload rate of the data packet based on the duration and the size of the data packet
  • a first communication module configured to upload the data packet to an in-vehicle communication unit corresponding to the vehicle at an actual upload rate not lower than the minimum upload rate when the vehicle passes through a communicable area of the user terminal .
  • a fourth aspect of the present invention provides a vehicle provided with an in-vehicle communication unit, the vehicle comprising:
  • a storage module configured to save the received data packet in a preset memory after the corresponding in-vehicle communication unit of the vehicle receives the data packet uploaded by the user terminal;
  • a search module configured to search for a base station capable of wirelessly communicating with the in-vehicle communication unit during running of the vehicle;
  • a transmission module configured to send, after searching for a base station capable of wirelessly communicating with the in-vehicle communication unit, a data packet stored in the memory to a base station capable of wirelessly communicating with the in-vehicle communication unit.
  • the transmission module includes:
  • a second determining module configured to determine, according to a location, a traveling speed, and a traveling direction of the vehicle relative to the base station, a length of time required for the vehicle to pass through a communicable area of the base station;
  • a second calculating module configured to calculate a minimum transmission rate of the data packet based on the duration and the size of the data packet
  • a second communication module configured to send the data packet to the base station at an actual transmission rate not lower than the minimum transmission rate when the vehicle passes through a communicable area of the base station.
  • a fifth aspect of the present invention provides a V2X-based data transmission system including a user terminal, a vehicle, and a base station, wherein the user terminal performs wireless communication with the vehicle, and the vehicle performs with the base station Wireless communication, the user terminal is a user terminal provided by the third aspect of the present invention, and the vehicle is the vehicle provided by the fourth aspect of the invention.
  • the V2X-based data transmission method provided by the present invention when the user terminal is not within the communication coverage of any base station, detects whether there is a vehicle capable of providing data transmission in the communicable area of the user terminal, and if so, will wait The transmitted data packet is uploaded to the in-vehicle communication unit corresponding to the above vehicle.
  • the data packet to be transmitted is directly uploaded to the vehicle capable of providing data transmission in the communicable area of the user terminal, so that When the user terminal is located at the edge of the network, the energy consumption of the user terminal when uploading data is effectively reduced, and the battery life of the user terminal is prolonged.
  • the V2X-based data transmission method provided by the present invention, after the vehicle-mounted communication unit corresponding to the vehicle receives the data packet uploaded by the user terminal, saves the received data packet in a preset memory, and then in the vehicle. During the running, the saved data packet is transmitted to a base station capable of wirelessly communicating with the in-vehicle communication unit, and the data packet is forwarded by the base station, thereby further completing the data packet transmission.
  • FIG. 1 is a schematic structural diagram of a V2X-based data transmission system according to a first embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a V2X-based data transmission method according to a second embodiment of the present invention
  • step 3 is a schematic flowchart of a refinement step of step 203 in the second embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a scenario in which it takes time to determine that a vehicle passes through a communicable area of a user terminal according to the present invention
  • FIG. 5 is a schematic flowchart diagram of a V2X-based data transmission method according to a third embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a refinement step of step 503 in the third embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a scenario in which it takes time to determine a vehicle passing through a communicable area of a base station in the present invention
  • FIG. 8 is a schematic diagram of a program module of a user terminal according to a fourth embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a refinement module of the uploading module 803 according to the fourth embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a program module of a vehicle in a fifth embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a refinement module of the transmission module 1003 according to the fifth embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a V2X-based data transmission system according to a first embodiment of the present invention, where the system includes a user terminal 100, Vehicle 200 and base station 300. Among them, the user terminal 100 performs wireless communication with the vehicle 200, and the vehicle 200 performs wireless communication with the base station 300.
  • the user terminal 100 includes a mobile terminal having a wireless communication function, an in-vehicle terminal, a wearable smart device, and the like.
  • the mobile terminal includes a mobile phone, a notebook, a tablet computer, a POS machine, and the like;
  • the vehicle-mounted terminal includes an on-board computer, a car navigation device, a driving recorder, and an in-vehicle communication device;
  • the wearable smart device includes a smart bracelet and a smart watch. , smart glasses and smart clothing.
  • the vehicle 200 is a vehicle that provides data transmission, such as a Bluetooth connection, a wireless hotspot, and a vehicle that can directly transmit data.
  • the data packet that needs to be transmitted may be sent to the nearby vehicle 200, and the vehicle 200 temporarily waits after receiving the data packet.
  • the data packet is saved, and then the base station 300 capable of wireless communication with itself is searched while traveling, and then the stored data packet is transmitted to the base station 300, and the data packet is forwarded by the base station 300.
  • the data packet to be transmitted is uploaded to the communicable area of the user terminal 100 and can be provided.
  • the data transmission vehicle 200 saves the received data packet in a preset memory after the vehicle communication unit corresponding to the vehicle 200 receives the data packet uploaded by the user terminal 100, and then the vehicle 200 will be saved during the running process.
  • the data packet is transmitted to the base station 300 capable of wirelessly communicating with the above-described in-vehicle communication unit, and the data packet is forwarded by the base station 300, thereby completing the transmission of the data packet.
  • the data packet to be transmitted may be directly uploaded to the vehicle 200 capable of providing data transmission, and the data packet is passed by the vehicle 200 to the base station 300. Forwarding, the user terminal 100 can effectively reduce the energy consumption when the user terminal 100 uploads data, and extend the battery life of the user terminal 100 when the user terminal 100 is located at the edge of the network.
  • FIG. 2 is a schematic flowchart of a V2X-based data transmission method according to a second embodiment of the present invention, where the method includes:
  • Step 201 When the user terminal has a data packet to be transmitted, detecting whether the user terminal is in a communication coverage of any base station;
  • the user terminal before the user terminal sends the data packet, it is first detected whether the user terminal is within the communication coverage of any base station, that is, whether the signal strength of the cellular communication network received by the user terminal is lower than a preset.
  • the strength threshold if the signal strength of the cellular communication network received by the user terminal is lower than a preset strength threshold, the user terminal is considered not to be in the communication coverage of any base station, that is, the user terminal is located at the edge of the network.
  • the data packet to be transmitted refers to a service that is not very strict in delay requirements, for example, an email service, a multimedia message service, a file transfer service, and the like.
  • Step 202 When the user terminal is not in the communication coverage of any base station, detecting whether there is a vehicle capable of providing data transmission in the communicable area of the user terminal;
  • the user terminal when the user terminal is not in the communication coverage of any base station, it can utilize the wireless transmission function that it has, such as Bluetooth transmission, WLAN (Wireless). Local Area Networks, WLAN, etc. to transmit data.
  • the wireless transmission function such as Bluetooth transmission, WLAN (Wireless). Local Area Networks, WLAN, etc. to transmit data.
  • the vehicle capable of providing data transmission refers to a vehicle that can communicate with the user terminal and can receive a data packet uploaded by the user terminal, such as a vehicle having a Bluetooth communication function or a vehicle provided with a wireless hotspot.
  • Step 203 When there is a vehicle capable of providing data transmission in the communicable area of the user terminal, upload the data packet to be transmitted to the in-vehicle communication unit corresponding to the vehicle.
  • the data packet to be transmitted is uploaded to the in-vehicle communication unit corresponding to the vehicle.
  • the user terminal may transmit the data packet to the in-vehicle communication unit corresponding to the vehicle by establishing a Bluetooth connection or a wireless hotspot connection with the vehicle.
  • FIG. 3 is a schematic flowchart of the refinement step of step 203 in the second embodiment of the present invention.
  • the data packet to be transmitted is uploaded to the location in step 203.
  • the steps of the vehicle-mounted communication unit corresponding to the vehicle include:
  • Step 301 Determine, according to a location, a traveling speed, and a traveling direction of the vehicle with respect to the user terminal, a length of time required for the vehicle to pass through the communicable area of the user terminal;
  • the communicable area of the user terminal is a circle centered on the user terminal and having an optimal transmission distance of the user terminal, based on the location of the vehicle relative to the user terminal.
  • the direction of travel can determine the path of the vehicle passing through the communicable area of the user terminal, and then the distance of the path can be calculated according to the radius; further, based on the traveling speed of the vehicle, the vehicle can be calculated The length of time it takes.
  • the optimal transmission distance of the user terminal is determined according to the effective communication distance of the user terminal or the vehicle. For example, if the user terminal uses Bluetooth for data transmission, and the effective transmission distance of the Bluetooth is 100 m, the optimal transmission distance of the user terminal may be set to 100 m; or, suppose the user terminal uses the wireless hotspot launched by the vehicle. To transmit data, and the effective communication distance of the wireless hotspot transmitted by the above vehicle is 200m, the optimal transmission distance of the above user terminal can be set to 200m.
  • FIG. 4 is a schematic diagram of a scenario for determining the length of time required for a vehicle to pass through a communicable area of a user terminal in the present invention.
  • D represents the optimal transmission distance of the user terminal, and it is assumed that the initial position of the vehicle with respect to the user terminal is point A, and the end position of the communicable area of the vehicle passing through the user terminal is predicted according to the traveling direction of the vehicle.
  • the distance between the two points A and B can be calculated according to the size of D.
  • the traveling speed of the vehicle the length of time taken for the vehicle to travel from point A to point B can be determined.
  • Step 302 Calculate a minimum upload rate of the data packet based on the duration and the size of the data packet.
  • the minimum upload rate of the data packet is 0.1 MB/s.
  • Step 303 When the vehicle passes through the communicable area of the user terminal, upload the data packet to an in-vehicle communication unit corresponding to the vehicle at an actual upload rate not lower than the minimum upload rate.
  • the data packet is uploaded to the actual upload rate not lower than the minimum upload rate.
  • the in-vehicle communication unit corresponding to the vehicle ensures that the data packet can be successfully uploaded to the in-vehicle communication unit corresponding to the vehicle when the vehicle passes through the communicable area of the user terminal.
  • the upload rate of the foregoing data packet is related to the distance between the user terminal and the vehicle, and the closer the distance between the user terminal and the vehicle is, the larger the upload rate is, so the upload rate of the data packet will follow the distance.
  • the change of the packet but when transmitting the above data packet, it is necessary to always upload at an actual upload rate not lower than the minimum upload rate, so that the data packet can be successfully uploaded to the in-vehicle communication unit corresponding to the vehicle.
  • the V2X-based data transmission method when the user terminal is not in the communication coverage of any base station, it is detected whether there is a vehicle capable of providing data transmission in the communicable area of the user terminal, and if yes, The data packet to be transmitted is uploaded to the in-vehicle communication unit corresponding to the above vehicle.
  • the data packet to be transmitted is directly uploaded to the vehicle capable of providing data transmission in the communicable area of the user terminal, so that When the user terminal is located at the edge of the network, the energy consumption of the user terminal when uploading data is effectively reduced, and the battery life of the user terminal is prolonged.
  • FIG. 5 is a schematic flowchart of a V2X-based data transmission method according to a third embodiment of the present invention, where the method includes:
  • Step 501 After receiving the data packet uploaded by the user terminal, the corresponding in-vehicle communication unit of the vehicle saves the received data packet in a preset memory.
  • the in-vehicle communication unit corresponding to the vehicle after receiving the data packet uploaded by the user terminal, the in-vehicle communication unit corresponding to the vehicle does not need to immediately forward the data packet, but saves the received data packet in a preset memory;
  • Step 502 Search for a base station capable of wirelessly communicating with the in-vehicle communication unit during running of the vehicle;
  • the vehicle searches for a base station capable of wirelessly communicating with its own in-vehicle communication unit during the running, that is, detects whether the vehicle has traveled to the communication coverage area of a certain base station.
  • Step 503 After searching for a base station capable of wirelessly communicating with the in-vehicle communication unit, transmitting a data packet stored in the memory to a base station capable of wirelessly communicating with the in-vehicle communication unit.
  • FIG. 6 is a schematic flowchart of a refinement step of step 503 in the third embodiment of the present invention.
  • the data packet saved in the memory is sent to the foregoing step 503 to
  • the steps of the base station capable of wirelessly communicating with the in-vehicle communication unit include:
  • Step 601 Determine, according to a location, a traveling speed, and a traveling direction of the vehicle with respect to the base station, a length of time required for the vehicle to pass through a communicable area of the base station;
  • the communicable area of the base station is a circle centered on the base station and having an optimal transmission distance of the base station, based on a position and a traveling direction of the vehicle relative to the base station, that is,
  • the path of the vehicle passing through the communicable area of the base station may be determined, and then the path of the path may be calculated according to the radius; further, based on the traveling speed of the vehicle, the time required for the vehicle to travel the above-mentioned route may be calculated.
  • the optimal transmission distance of the base station is determined according to the effective communication distance of the base station. For example, assuming that the effective transmission distance of the above base station is 500 m, the optimal transmission distance of the above base station can be set to 500 m.
  • FIG. 7 is a schematic diagram of a scenario for determining the length of time required for a vehicle to pass through a communicable area of a base station in the present invention.
  • d represents the optimal transmission distance of the base station, and it is assumed that the initial position of the vehicle relative to the base station is point a, and the end position of the communicable area of the vehicle passing through the base station is predicted to be point b according to the traveling direction of the vehicle. Then, according to the size of d, the distance between two points a and b can be calculated, and finally, according to the traveling speed of the vehicle, the length of time taken for the vehicle to travel from point a to point b can be determined.
  • Step 602 Calculate a minimum transmission rate of the data packet based on the duration and the size of the data packet.
  • the minimum transmission rate of the data packet is 0.1 MB/s.
  • Step 603 When the vehicle passes through the communicable area of the base station, send the data packet to the base station at an actual transmission rate not lower than the minimum transmission rate.
  • the data packet after calculating the minimum transmission rate of the data packet, when the vehicle passes through the communicable area of the base station, the data packet is sent to the foregoing at an actual transmission rate not lower than the minimum transmission rate.
  • the base station can ensure that the data packet can be successfully transmitted to the base station when the vehicle passes through the communicable area of the base station.
  • the transmission rate of the foregoing data packet is related to the distance between the base station and the vehicle, and the closer the base station is to the vehicle, the larger the transmission rate, so the transmission rate of the data packet changes with the distance.
  • the vehicle searches again during the running of the vehicle.
  • the base station capable of wirelessly communicating with the above-described in-vehicle communication unit then transmits the above data packet to the newly searched base station.
  • the V2X-based data transmission method provided by the embodiment of the present invention, after the vehicle-mounted communication unit corresponding to the vehicle receives the data packet uploaded by the user terminal, saves the received data packet in a preset memory, and then travels on the vehicle. In the process, the saved data packet is transmitted to a base station capable of wirelessly communicating with the in-vehicle communication unit, and the data packet is forwarded by the base station, thereby further completing the data packet transmission.
  • FIG. 8 is a schematic diagram of a program module of a user terminal according to a fourth embodiment of the present invention, where the user terminal includes:
  • the first detecting module 801 is configured to detect, when the user terminal has a data packet to be transmitted, whether the user terminal is in a communication coverage of any base station;
  • the user terminal is the user terminal 100 described in the first embodiment of the present invention.
  • the first detecting module 801 Before the user terminal sends the data packet, the first detecting module 801 first detects whether the user terminal is in the communication coverage of the arbitrary base station, that is, whether the signal strength of the cellular communication network received by the user terminal is lower than a preset.
  • the strength threshold if the signal strength of the cellular communication network received by the user terminal is lower than a preset intensity threshold, the user terminal is considered not to be in the communication coverage of any base station, that is, the user terminal is located at the edge of the network.
  • the data packet to be transmitted refers to a service that is not very strict in delay requirements, for example, an email service, a multimedia message service, a file transfer service, and the like.
  • the user terminal includes a mobile terminal having a wireless communication function, an in-vehicle terminal, a wearable smart device, and the like.
  • the mobile terminal includes a mobile phone, a notebook, a tablet computer, a POS machine, and the like;
  • the vehicle-mounted terminal includes an on-board computer, a car navigation device, a driving recorder, and an in-vehicle communication device;
  • the wearable smart device includes a smart bracelet and a smart watch. , smart glasses and smart clothing.
  • a second detecting module 802 configured to detect, when the user terminal is not within the communication coverage of any base station, whether there is a vehicle capable of providing data transmission in the communicable area of the user terminal;
  • the user terminal when the user terminal is not in the communication coverage of any base station, it can utilize the wireless transmission function that it has, such as Bluetooth transmission, WLAN (Wireless). Local Area Networks, WLAN, etc. to transmit data.
  • the wireless transmission function such as Bluetooth transmission, WLAN (Wireless). Local Area Networks, WLAN, etc. to transmit data.
  • the second detecting module 802 detects whether there is a vehicle capable of providing data transmission in the communicable area of the user terminal (eg, within 100 meters).
  • the vehicle capable of providing data transmission refers to a vehicle that can communicate with the user terminal and can receive a data packet uploaded by the user terminal, such as a vehicle having a Bluetooth communication function or a vehicle provided with a wireless hotspot.
  • the uploading module 803 is configured to upload the data packet to be transmitted to the in-vehicle communication unit corresponding to the vehicle when there is a vehicle capable of providing data transmission in the communicable area of the user terminal.
  • the uploading module 803 uploads the data packet to be transmitted to the in-vehicle communication unit corresponding to the vehicle.
  • the user terminal may transmit the data packet to the in-vehicle communication unit corresponding to the vehicle by establishing a Bluetooth connection or a wireless hotspot connection with the vehicle.
  • FIG. 9 is a schematic diagram of a refinement module of the uploading module 803 according to the fourth embodiment of the present invention.
  • the uploading module 803 includes:
  • the first determining module 901 is configured to determine, according to the location, the traveling speed, and the traveling direction of the vehicle with respect to the user terminal, a time required for the vehicle to pass through the communicable area of the user terminal;
  • the communicable area of the user terminal is a circle centered on the user terminal and having an optimal transmission distance of the user terminal, based on the location of the vehicle relative to the user terminal.
  • the direction of travel can determine the path of the vehicle passing through the communicable area of the user terminal, and then the distance of the path can be calculated according to the radius; further, based on the traveling speed of the vehicle, the vehicle can be calculated The length of time it takes.
  • the optimal transmission distance of the user terminal is determined according to the effective communication distance of the user terminal or the vehicle. For example, if the user terminal uses Bluetooth for data transmission, and the effective transmission distance of the Bluetooth is 100 m, the optimal transmission distance of the user terminal may be set to 100 m; or, suppose the user terminal uses the wireless hotspot launched by the vehicle. To transmit data, and the effective communication distance of the wireless hotspot transmitted by the above vehicle is 200m, the optimal transmission distance of the above user terminal can be set to 200m.
  • FIG. 4 is a schematic diagram of a scenario for determining the length of time required for a vehicle to pass through a communicable area of a user terminal in the present invention.
  • D represents the optimal transmission distance of the user terminal, and it is assumed that the initial position of the vehicle with respect to the user terminal is point A, and the end position of the communicable area of the vehicle passing through the user terminal is predicted according to the traveling direction of the vehicle.
  • the distance between the two points A and B can be calculated according to the size of D.
  • the traveling speed of the vehicle the length of time taken for the vehicle to travel from point A to point B can be determined.
  • the first calculating module 902 is configured to calculate a minimum upload rate of the data packet based on the duration and the size of the data packet;
  • the minimum upload rate of the data packet is 0.1 MB/s.
  • the first communication module 903 is configured to: when the vehicle passes through the communicable area of the user terminal, upload the data packet to an in-vehicle communication corresponding to the vehicle at an actual upload rate not lower than the minimum upload rate. unit.
  • the data packet is uploaded to the actual upload rate not lower than the minimum upload rate.
  • the in-vehicle communication unit corresponding to the vehicle ensures that the data packet can be successfully uploaded to the in-vehicle communication unit corresponding to the vehicle when the vehicle passes through the communicable area of the user terminal.
  • the upload rate of the foregoing data packet is related to the distance between the user terminal and the vehicle, and the closer the distance between the user terminal and the vehicle is, the larger the upload rate is, so the upload rate of the data packet will follow the distance.
  • the change of the packet but when transmitting the above data packet, it is necessary to always upload at an actual upload rate not lower than the minimum upload rate, so that the data packet can be successfully uploaded to the in-vehicle communication unit corresponding to the vehicle.
  • the user terminal in the embodiment of the present invention detects whether there is a vehicle capable of providing data transmission in the communicable area of the user terminal, and if yes, the user terminal is to be transmitted.
  • the data packet is uploaded to the in-vehicle communication unit corresponding to the above vehicle.
  • the data packet to be transmitted is directly uploaded to the vehicle capable of providing data transmission in the communicable area of the user terminal, thereby When the user terminal is located at the edge of the network, the energy consumption when uploading data is effectively reduced, and the battery usage time is prolonged.
  • FIG. 10 is a schematic diagram of a program module of a vehicle according to a fifth embodiment of the present invention.
  • the vehicle includes:
  • the storage module 1001 is configured to save the received data packet in a preset memory after the vehicle-mounted communication unit corresponding to the vehicle receives the data packet uploaded by the user terminal;
  • the above vehicle is the vehicle 200 described in the first embodiment of the present invention.
  • the vehicular communication unit corresponding to the vehicle does not need to immediately forward the data packet after receiving the data packet uploaded by the user terminal, but saves the received data packet in a preset memory;
  • a searching module 1002 configured to search for a base station capable of wirelessly communicating with the in-vehicle communication unit during running of the vehicle;
  • the vehicle searches for a base station capable of wirelessly communicating with its own in-vehicle communication unit during the running, that is, detects whether the vehicle has traveled to the communication coverage area of a certain base station.
  • the transmission module 1003 is configured to, after searching for a base station capable of wirelessly communicating with the in-vehicle communication unit, transmit the data packet stored in the memory to a base station capable of wirelessly communicating with the in-vehicle communication unit.
  • FIG. 11 is a schematic diagram of a refinement module of the transmission module 1003 according to the fifth embodiment of the present invention.
  • the transmission module 1003 includes:
  • a second determining module 1101 configured to determine, according to a location, a traveling speed, and a traveling direction of the vehicle with respect to the base station, a time required for the vehicle to pass through a communicable area of the base station;
  • the communicable area of the base station is a circle centered on the base station and having an optimal transmission distance of the base station, based on a position and a traveling direction of the vehicle relative to the base station, that is,
  • the path of the vehicle passing through the communicable area of the base station may be determined, and then the path of the path may be calculated according to the radius; further, based on the traveling speed of the vehicle, the time required for the vehicle to travel the above-mentioned route may be calculated.
  • the optimal transmission distance of the base station is determined according to the effective communication distance of the base station. For example, assuming that the effective transmission distance of the above base station is 500 m, the optimal transmission distance of the above base station can be set to 500 m.
  • FIG. 7 is a schematic diagram of a scenario for determining the length of time required for a vehicle to pass through a communicable area of a base station in the present invention.
  • d represents the optimal transmission distance of the base station, and it is assumed that the initial position of the vehicle relative to the base station is point a, and the end position of the communicable area of the vehicle passing through the base station is predicted to be point b according to the traveling direction of the vehicle. Then, according to the size of d, the distance between two points a and b can be calculated, and finally, according to the traveling speed of the vehicle, the length of time taken for the vehicle to travel from point a to point b can be determined.
  • a second calculating module 1102 configured to calculate a minimum transmission rate of the data packet based on the duration and the size of the data packet;
  • the minimum transmission rate of the data packet is 0.1 MB/s.
  • the second communication module 1103 is configured to send the data packet to the base station at an actual transmission rate not lower than the minimum transmission rate when the vehicle passes through a communicable area of the base station.
  • the data packet after calculating the minimum transmission rate of the data packet, when the vehicle passes through the communicable area of the base station, the data packet is sent to the foregoing at an actual transmission rate not lower than the minimum transmission rate.
  • the base station can ensure that the data packet can be successfully transmitted to the base station when the vehicle passes through the communicable area of the base station.
  • the transmission rate of the foregoing data packet is related to the distance between the base station and the vehicle, and the closer the base station is to the vehicle, the larger the transmission rate, so the transmission rate of the data packet changes with the distance.
  • the vehicle searches again during the running of the vehicle.
  • the base station capable of wirelessly communicating with the above-described in-vehicle communication unit then transmits the above data packet to the newly searched base station.
  • the vehicle provided by the embodiment of the present invention may determine the length of time required for the vehicle to pass through the communicable area of the base station based on the position of the vehicle relative to the base station, the traveling speed, and the traveling direction; and calculate the above based on the duration and the size of the data packet.
  • the minimum transmission rate of the data packet when the vehicle passes through the communicable area of the base station, transmits the data packet to the base station at an actual transmission rate not lower than the minimum transmission rate, thereby ensuring that the vehicle passes through the communicable area of the base station
  • the above data packet can be successfully sent to the base station.
  • the vehicle provided by the embodiment of the present invention saves the received data packet in a preset memory after the vehicle-mounted communication unit corresponding to the vehicle receives the data packet uploaded by the user terminal, and then saves the vehicle during the running of the vehicle.
  • the data packet is transmitted to a base station capable of wirelessly communicating with the above-described in-vehicle communication unit, and the data packet is forwarded by the base station, thereby further completing the transmission of the data packet.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules is only a logical function division.
  • there may be another division manner for example, multiple modules or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or module, and may be electrical, mechanical or otherwise.
  • the modules described as separate components may or may not be physically separated.
  • the components displayed as modules may or may not be physical modules, that is, may be located in one place, or may be distributed to multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
  • the integrated modules if implemented in the form of software functional modules and sold or used as separate products, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM, Read-Only) Memory, random access memory (RAM), disk or optical disk, and other media that can store program code.

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

Abstract

La présente invention concerne un procédé de transmission de données basé sur V2X (véhicule à X, échange d'informations entre un véhicule et l'extérieur), un terminal utilisateur, un véhicule et un système, le procédé consistant à : lorsqu'un terminal utilisateur a des paquets à transmettre, détecter si le terminal utilisateur se trouve dans la plage de couverture de communication de n'importe quelle station de base ; lorsque le terminal utilisateur ne se trouve pas dans la plage de couverture de communication de n'importe quelle station de base, détecter si un véhicule capable de fournir une transmission de données est présent dans la zone de communication disponible du terminal utilisateur ; s'il est présent, télécharger en amont le paquet à transmettre à une unité de communication de véhicule correspondant au véhicule ; et après que le véhicule a été conduit dans la couverture de communication d'une station de base, acheminer le paquet au moyen de la station de base. Le procédé décrit peut réduire efficacement la consommation d'énergie du terminal utilisateur lors du téléchargement en amont de données lorsque le terminal utilisateur est situé à la limite d'un réseau, prolongeant ainsi la durée de vie de la batterie du terminal utilisateur.
PCT/CN2017/103915 2017-09-28 2017-09-28 Procédé de transmission de données basé sur v2x, terminal utilisateur, véhicule et système WO2019061134A1 (fr)

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WO2007047505A2 (fr) * 2005-10-18 2007-04-26 Telecommunication Systems, Inc. Renvoi automatique d'appel vers un système télématique à bord d'un véhicule
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CN105578422A (zh) * 2015-12-15 2016-05-11 北京交通大学 基于车载移动终端的信息传输方法和装置
CN105611653A (zh) * 2015-12-28 2016-05-25 国家电网公司 车载终端及其通信方法
CN205454107U (zh) * 2015-12-28 2016-08-10 国家电网公司 车载终端
CN105933022A (zh) * 2016-06-30 2016-09-07 邓春生 车载通信终端
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Publication number Priority date Publication date Assignee Title
WO2007047505A2 (fr) * 2005-10-18 2007-04-26 Telecommunication Systems, Inc. Renvoi automatique d'appel vers un système télématique à bord d'un véhicule
CN105468337A (zh) * 2014-06-16 2016-04-06 比亚迪股份有限公司 通过移动终端寻找车辆的方法、***和移动终端
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