Analysis of reactive routing protocols for mobile ad hoc networks in Markov models

• Published in: Applied mathematics and mechanics 2007, Vol.28 (1), p.127-139
• Main Author: 王汉兴 胡细 方建超 贾维嘉
• Format: Article
• Language: English
• Subjects: Computer networks; Dynamic tests; Flooding; Mathematical models; Networks; Protocol (computers); Reuse; Routing (telecommunications); 性能分析; 移动ad-hoc网络; 路由协议; 马尔可夫模型
• ISSN: 0253-4827; 1573-2754
• DOI: 10.1007/s10483-007-0115-1

Mobile ad hoc networks （MANETs） have become a hot issue in the area of wireless networks for their non-infrastructure and mobile features. In this paper, a MANET is modeled so that the length of each link in the network is considered as a birthdeath process and the space is reused for n times in the flooding process, which is named as an n-spatiai reuse birth-death model （n-SRBDM）. We analyze the performance of the network under the dynamic source routing protocol （DSR） which is a famous reactive routing protocol. Some performance parameters of the route discovery are studied such as the probability distribution and the expectation of the flooding distance, the probability that a route is discovered by a query packet with a hop limit, the probability that a request packet finds a τ-time-valid route or a symmetric-valid route, and the average time needed to discover a valid route. For the route maintenance, some parameters are introduced and studied such as the average frequency of route recovery and the average time of a route to be valid. We compare the two models with spatial reuse and without spatial reuse by evaluating these parameters. It is shown that the spatial reuse model is much more effective in routing.