【摘要】 目前大部分关于移动自组织网的研究建立在全向天线或全向传输/接收这个假设的基础之上.全向天线接收的缺点是很容易受到干扰.本文提出了一种基于时分多址技术的新的媒体接入控制算法.该算法是分布式的,使用了智能天线的天线波束赋形技术,对有定向天线的移动自组织网采用纯定向传输和接收,没有假定任何全向天线或全向接收性能.分析表明,该算法避免了全向接收的缺点,抗干扰性强,做邻居节点检测和资源预留的时间只占总时间的9%,该算法是合理的.更多还原

【Abstract】 At present,most research of mobile wireless ad hoc networks is based on the assumption of omni-antennas or omni-directional reception.The disadvantage of omni-directional reception is easy to meet jamming.Here,we proposed a novel medium access control(MAC) algorithm which is Time Division Multiple Access(TDMA)-based and distributed.The beamforming capability of smart antennas is exploited.No the assumption of omni-antennas or omni-directional reception capability at all,pure directional transmission and reception for mobile wireless ad hoc networks with directional antennas is used in this algorithm too.Recent research shows that there are significant gains in throughput to be realized with directional transmission and directional reception.The analysis shows that the proposed algorithm avoided the disadvantage of omni-directional reception and had a good ability of anti-jamming.Moreover,the time cost for neighbor discovery and reservation is only 9% of the whole time.Therefore,the algorithm is reasonable.更多还原