Channel access method and device applied to inter-vehicle communication system

A technology of inter-vehicle communication and channel access, which is applied in the direction of location information-based services, wireless communication, wireless communication services, etc. It can solve the problems of not considering the mobility of vehicles and the quality of channel access cannot be well guaranteed, etc. Achieve the effect of improving the probability of state information

Active Publication Date: 2017-06-09
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the EDCA mechanism sets different priorities for different services to ensure the service quality of different services, it does not consider the mobility of vehicles, so that the quality of channel access cannot be well guaranteed; When moving, it is necessary to increase the probability of sending its own state information to remind the surrounding vehicles. Obviously, the EDCA mechanism does not consider the mobility of the vehicle, so it cannot meet the corresponding needs

Method used

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  • Channel access method and device applied to inter-vehicle communication system
  • Channel access method and device applied to inter-vehicle communication system
  • Channel access method and device applied to inter-vehicle communication system

Examples

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no. 1 example

[0051] The first embodiment of the present invention provides a channel access method applied to a vehicle-to-vehicle communication system. Here, the vehicle-to-vehicle communication system is used to realize wireless communication between at least two vehicles, and can also be used to realize vehicle-to-drive test Unit (Road Side Unit, RSU) wireless communication.

[0052] figure 1 It is a flow chart of the first embodiment of the channel access method applied to the inter-vehicle communication system of the present invention, as shown in figure 1 As shown, the process includes:

[0053] Step 100: The target vehicle obtains the driving speed information of itself and surrounding vehicles.

[0054] Here, the target vehicle is any one vehicle capable of communicating with the remaining vehicles using the inter-vehicle communication system.

[0055] Here, the traveling speed information of the vehicle includes: a scalar value of the traveling speed of the vehicle; the scalar ...

no. 2 example

[0088] In order to better reflect the purpose of the present invention, further illustrations are made on the basis of the first embodiment of the present invention.

[0089] In the second embodiment of the present invention, the following application scenarios are considered: all vehicles at the intersection are equipped with OBU and cellular network communication unit, wherein the OBU adopts DSRC technology to communicate with other vehicles or RSU, and the cellular network communication unit adopts TDMA mechanism Realize the wireless communication connection with other vehicles or RSU.

[0090] Specifically, in order to realize the relevant functions of the cellular network communication unit, an eNB is established in the intersection area, and the area covered by the eNB is called a coordination area; vehicles entering the coordination area use the cellular network communication unit to communicate with other vehicles or RSUs, namely When the vehicle detects that it has en...

no. 3 example

[0121] Regarding the channel access method applied to the inter-vehicle communication system in the first embodiment of the present invention, the third embodiment of the present invention provides a channel access device applied to the inter-vehicle communication system, where the inter-vehicle communication system is used for Wireless communication between at least two vehicles is enabled.

[0122] Figure 5 It is a schematic diagram of the composition and structure of the channel access device applied to the inter-vehicle communication system according to the third embodiment of the present invention, as shown in Figure 5 As shown, the device is set on the target vehicle, and the device includes: an acquisition module 500, a setting module 501 and a channel access module 502; wherein,

[0123] The acquiring module 500 is used to acquire the traveling speed information of the target vehicle and surrounding vehicles;

[0124] The setting module 501 is configured to set the...

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Abstract

An embodiment of the invention discloses a channel access method applied to an inter-vehicle communication system. The inter-vehicle communication system is used for realizing wireless communication between at least two vehicles. The channel access method comprises the steps of: acquiring driving speed information of a target vehicle and surrounding vehicles by the target vehicle; setting a contention window of a data transmission channel used by the target vehicle in the inter-vehicle communication system based on the acquired driving speed information; and conducting channel access based on the set contention window. The embodiment of the invention further discloses a channel access device applied to the inter-vehicle communication system.

Description

technical field [0001] The invention relates to the Internet of Vehicles technology, in particular to a channel access method and device applied to an inter-vehicle communication system. Background technique [0002] In the vehicle ad-hoc network (VANET), the vehicle adopts the dedicated short-range communication (Dedicated Short Range Communications, DSRC) technology, and sends its current state information to the surrounding vehicles through broadcasting. Among them, the state information Including the vehicle's position, speed, acceleration, driving path, driving direction and other information, the vehicle simultaneously receives the status information sent by other vehicles, so that the driver can be familiar with the driving status of the surrounding vehicles and sudden emergencies, and prevent road traffic safety accidents Therefore, it is of great significance to ensure the reliable and efficient transmission of vehicle status information. [0003] In the prior art,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W4/04H04W74/04
CPCH04W4/027H04W4/046H04W74/04
Inventor 李源曹轲
Owner CHINA MOBILE COMM GRP CO LTD
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