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Improved GeoGRID routing method in vehicle-mounted short distance communication network

A communication network and short-distance technology, applied in the field of vehicle communication network, can solve problems such as unsuitable V2X network, achieve the effect of improving forwarding efficiency and reducing conflict rate

Active Publication Date: 2016-07-27
DATANG GOHIGH INTELLIGENT & CONNECTED TECH (CHONGQING) CO LTD
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  • Application Information

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Problems solved by technology

The existing GeoGRID protocol is not yet suitable for V2X networks because:

Method used

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  • Improved GeoGRID routing method in vehicle-mounted short distance communication network
  • Improved GeoGRID routing method in vehicle-mounted short distance communication network

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0026] figure 1 It is a method flowchart of the present invention, as shown in the figure, the improved GeoGRID routing method in the vehicle-mounted short-distance communication network disclosed by the present invention comprises the following steps:

[0027] 1. According to the communication coverage of vehicle nodes, the V2X network is divided into rectangular grids connected end to end;

[0028] Such as figure 2 As shown, the communication coverage of vehicle nodes is a circular area, and the radius of the circle is r. Along the narrow and long road where the vehicle travels, the V2X network is divided into end-to-end rectangular grids. The length of the long side of the rectangular grid is D, and satisfy 2r=D+d, where the parameter d is configured by the network management center (composed of a group of servers, responsible for parame...

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Abstract

The invention discloses an improved GeoGRID routing method in a vehicle-mounted short distance communication network, comprising steps of dividing a V2X network into rectangle grids which are in head-to-end connection according to the communication range of the vehicle-mounted node, choosing forwarding nodes in the rectangle grid, adjusting the rectangle grid according to the chosen forwarding nodes, and using the regulated rectangle grid and the forwarding nodes therein to forward information, wherein the choosing method for the forwarding nodes comprises that: a source node obtains the geographic position information and the driving directions of all nodes in the communication range through the received heartbeat information of the surrounding nodes, the source nodes choose vehicle-mounted nodes which are on the same lane, in opposite drive directions and have the furthest distance as the forwarding nodes in the adjacent rectangle grids, and the rectangle network is regulated according to the chosen forwarding nodes. According to the V2X network characteristic, the improved GeoGRID routing method performs improvement on the GeoGRID protocol, enabling the GeoGRID protocol to be suitable for the V2X network and also reducing the data confliction rates and improving the data forwarding rate.

Description

technical field [0001] The invention relates to an improved GeoGRID routing method in a vehicle-mounted short-distance communication network, belonging to the technical field of vehicle-mounted communication networks. Background technique [0002] The vehicle short-distance communication (VehicletoX: V2X) network is realized by short-distance communication technologies such as wireless communication, GPS / GIS, and sensors. 2-Vehicle), outside the vehicle (vehicle-2-Infrastructure), and between vehicles (Vehicle-2-Person). [0003] Geocast is a multicast protocol that transmits data to all nodes in the destination area based on geographic location information. According to whether the source node sends data in advance, the protocol can be divided into two types. One type requires pre-established routes, such as Temporary in-sequence multicast routing (GeoTORA) and mesh multicast routing. The other type does not require pre-established routing, such as multicast protocols base...

Claims

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Application Information

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IPC IPC(8): H04W40/02
Inventor 王成金陈山枝
Owner DATANG GOHIGH INTELLIGENT & CONNECTED TECH (CHONGQING) CO LTD
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