基于位置信息的多信道Ad-Hoc网络MAC协议研究

超宽带无线通信技术由于其功耗低、结构简单、定位精确、空间容量大等特点,特别适用于AdHoc无线自组织网。其精确的定位能力,对于Ad Hoc的MAC协议优化有很大的帮助。该文在UWB无线定位的基础上,设计了基于位置信息的多信道Ad Hoc网络的MAC协议,主要介绍了信道分配部分。其主要思想是按照节点所处的物理位置来分配信道,仿真验证了在选择合适的栅格大小的情况下,与传统的静态信道分配在冲突避免和网络吞吐量等方面都有所改进。

Multi-channel MAC Protocol Channel Assignment Based on Location Information of Ad Hoc Network

The ultra wide band （UWB） technology is a wireless communication technology which has a lot of characters, such as low cost and power consumption, simple structure, precise location ability, high space capability, which is suitable for Ad Hoc wireless network particularly. Its precise location ability has great help in designing of MAC layer of Ad Hoc wireless. In this paper, design a multi - channel MAC protocol of Ad Hoc wireless network based on location information, mainly introduce the part of channel assignment. The main ideas of this protocol is to assign channel according to the physical location of hosts and discuss the effect of grid size and simulation shows this protocol has better performance in reduce interference and throughput of networks than static channel assign protocol if we choose proper grid size.