Method for selecting optimum relay in communication between wayside device and vehicle

A technology for roadside equipment and vehicle communication, which is applied in the field of wireless communication, can solve the problems of not providing a relay method and the detailed process of implementing relay technology, and achieve the effect of improving network performance and increasing transmission capacity

Active Publication Date: 2012-08-01
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

Although the literature shows that the relay technology can be used to improve the network performance of energy efficiency, the literatu

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  • Method for selecting optimum relay in communication between wayside device and vehicle
  • Method for selecting optimum relay in communication between wayside device and vehicle
  • Method for selecting optimum relay in communication between wayside device and vehicle

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Embodiment Construction

[0036] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0037] Such as figure 1 As shown, in this embodiment, a vehicle-mounted network with a fixed area size is considered, which includes several moving vehicles and stationary roadside equipment. The source roadside device transmits the data to the vehicle. If the distance is too far, another roadside device can be selected as a relay to transmit the data to the relay node first, and then the relay node transmits the data to the destination vehicle. Such as figure 1 Source Roadside Equipment in I i and destination vehicle V k When the data transmission is far away, the vehicle V k Can not be successfully receive...

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Abstract

The invention provides a method for selecting optimum relay in communication between a wayside device and a vehicle. The method comprises the following steps that: predicting a future track according to position and speed information updated by the vehicle in a vehicle-mounted network; selecting another wayside device as an optimum relay node according to the future track; firstly sending data to the relay node by a source wayside device; and then sending the data to a target vehicle by the relay node. With the help of the relay node, the source wayside device is capable of communicating with the further target vehicle, so that the transmission capacity of the network is efficiently increased according to the method provided by the invention and the performance of the network is improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an optimal relay selection method for communication between roadside equipment and vehicles in a vehicle network. Background technique [0002] In recent years, vehicle network (vehicle network) has gained more and more attention, especially intelligent transport systems (intelligent transport systems, ITS). In intelligent transportation systems, issues such as traffic safety, congestion control, and road condition monitoring can be effectively solved by relying on wireless communication technology. Existing research is generally based on roadside equipment (infrastructure), and the communication between roadside equipment and vehicles (Infrastructure-to-Vehicle, I2V) generally uses dedicated short-range communication technology (Dedicated Short Range Communications, DSRC). In the IEEE802.11p protocol, the roadside equipment is equipped with Roadside Units (RSUs), and the v...

Claims

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Application Information

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IPC IPC(8): H04W4/02H04W4/06H04B7/14
Inventor 邓磊程鹏俞晖李御益应凯
Owner SHANGHAI JIAO TONG UNIV
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