定向毫米波网络邻居发现协议

针对定向毫米波网络各节点间无波束方向先验信息导致邻居发现困难的问题,提出了一种基于盲交汇算法的邻居发现协议,推导了邻居发现过程中时隙长度、波束个数与邻居发现时间之间的理论关系。进一步,为了缩短邻居发现的时间,在盲交汇算法的邻居发现协议的基础上,提出了基于位置预测的邻居发现协议。仿真结果表明,基于盲交汇算法的邻居发现协议的最长邻居发现时间小于无协调的定向邻居发现协议,波束个数N接近2n(2n－1n,n>1,n∈Z)时,平均邻居发现时间低于无协调的定向邻居发现算法。此外,基于位置预测的邻居发现协议可以有效缩短邻居发现时间。

Protocol of neighbor discovery in directional millimeter wave wireless networks

Aiming at the problem that it is difficult to discover neighbors without prior information of sector direction between nodes in the directional millimeter wave network, a neighbor discovery protocol base on blind rendezvous algorithm was proposed and the theoretical relationship among slot length, the number of sectors and the time of neighbors discovery was derived. Furthermore, in order to shorten the time of neighbor discovery base on blind rendezvous algorithm, a neighbor discovery protocol based on location prediction was proposed. Simulation results showed that the longest discovery time of neighbor discovery protocol base on blind rendezvous algorithm is less than that of ODND(oblivious directional neighbor discovery) protocol and average discovery time of neighbor discovery protocol base on blind rendezvous algorithm is less than ODND protocol when the number of sectors N is close to 2n(2n－1n,n>1,n∈Z). In addition, neighbor discovery protocol based on location prediction can effectively shorten neighbor discovery time.