关键词: 车辆自组织网络, 分簇, 通信质量, 最大可接受通信距离

Abstract:

In order to solve the problem of poor quality of information transmission in vehicular Ad hoc network, a local communication quality assurance clustering algorithm based was proposed on hierarchical structure. The vehicle nodes are divided into two tiers, the Ad hoc tier and peer to peer tier. The low tier nodes use the inter-vehicle communication mode, and high tier nodes use 3G, LTE and other more reliable and traditional communication modes. The algorithm is based on the classical weight clustering algorithm, and is improved with the local optimization. the maximum acceptable communication distance was introduced and a new cluster structure maintenance policy was proposed. Simulation shows that the proposed algorithm has higher clustering structure stability, higher packet delivery ratio and lower cost, compared to the classical clustering algorithm.

Key words: vehicular Ad hoc network, clustering, communication quality, maximum acceptable communication distance