摘要
在节点服从一维泊松分布,仅考虑路径衰落和等发射功率的假设下,分析了一维无线ad hoc网络的连通性,推导了节点处于静态和移动两种情况下的网络连通概率.在节点处于静态情况下,推导了网络的闭环连通概率,以及达到给定网络连通概率所需要的发射功率,证明了保证网络渐近全连通时节点发射半径应满足的条件.在节点处于移动情况下,推导了基于一般移动模型下的网络连通概率公式,并应用此公式进一步求得随机路点(ran-dom waypoint,RWP)移动模型下的网络连通概率.在静态和移动的情形下,通过仿真对理论分析的真确性进行了验证,结果表明,在大多数情形下理论分析所预测的连通概率与仿真结果吻合较好.
The network connectivity of one-dimensional wireless ad hoc networks was analyzed based on the pathloss channel model and the equal transmission range assumption.The connectivity probability was analyzed in both static and mobile cases with nodes distributed according to one-dimensional Poisson process.In the static case,the closed form formula of connectivity probability was derived,as well as the transmission power needed to achieve a certain level of connectivity.The condition which the transmitting range should satisfy to achieve asymptotical full connectivity was also proved.In the mobile case,the connectivity problem was studied based on generalized mobility scheme,by which the connectivity probability under the specific random waypoint（RWP） mobility scheme was further obtained.The connectivity probability predicted by the theoretical analysis coincided with the simulation results perfectly in most cases.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2007年第8期1335-1340,共6页
Journal of Zhejiang University：Engineering Science
基金
国家自然科学基金资助项目(60472079)
教育部博士点基金资助项目(2004-0335099)
中国博士后科学基金资助项目(20060400314)
