面向VANETs的服务质量的一种信道分配的新算法

A New Approach for Channel allocation to Improve Quality of Service in VANETs

车辆的高速移动,导致频繁地进行呼叫切换,这就使得信道分配成为车联网VANETs(Vehicular Ad Hoc Network)中最受关注的研究热点。为此,提出一种新的信道分配算法,标记为SBC算法。该算法引用信道再使用技术(Channel Reuse Technique)、信道借用(Channel Borrowing),并依据车辆行驶的速度计算发生切换的时间,从而提高服务质量Qo S(Quality of Service)。仿真结果表明,提出的SBC算法在呼叫阻塞概率、丢失率和切换时延方面表现良好的性能。

Channel allocation became very interesting and important research area in vehicular ad hoc network （ VANET） as the channel allocation procedure needs to be efficient as the frequency of handoff is high because of the high mobility of the nodes. Therefore, the new approach for channel allocation is proposed, which is marked as SBC algorithm. The SBC algorithm use channel reuse technique, channel borrowing process and the speed of the vehicle to reserve the channel for handoff calls to improve quality of service （ QoS） in VANET. Simulation results show that the proposed algorithm has good performance in term of blocking probability, dropping probability and handoff latency.