本文把UV通信与Ad hoc网络相结合,利用Ad hoc网络的多跳特性来克服UV通信距离有限的弱点。为了使UV Ad hoc网络中的各个节点能够公平有效的接入信道,本文在二进制指数退避(Binary Exponential Backoff,BEB)算法的基础上,以提高公平性为目的,提出了一种基于历史的动态公平性避退算法(Uistory-Based Dynamic Fairness Backoff,HDFB)来改善节点接入信道的公平性。仿真结果表明:新算法能有效地改善信道接入的不公平性。
This paper integrates UV communications with Ad hoc network,using its feature of multi-hop,to overcome the weakness of UV communication.In order to make every note in the UV ad hoc network access to channel fairly and efficiently,based on Binary Exponential Backoff(BEB) algorithm,this paper proposes History-Based Dynamic Fairness Backoff(HDFB) algorithm to improve the fairness of accessing to channel.Simulation results show that the HDFB can improve the channel access fairness.