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自组网多径自适应动态资源预留路由协议
引用本文:林蔚.自组网多径自适应动态资源预留路由协议[J].哈尔滨工业大学学报,2009,41(1):269-271.
作者姓名:林蔚
作者单位:哈尔滨工程大学理学院,哈尔滨,150006  
摘    要:多媒体环境下,移动自组网路由的服务质量(QoS路由)存在两个问题:一个是路由维护问题.节点移动时常导致路由中断;另一个问题是随着客户的增加,网络中的通信量也增加,这一变化时常导致单径QoS路由发生拥塞.提出一个多径自适应动态资源预留路由协议(MDRSVP)解决这两个问题.它采用一种多径并、串行兼有的路由结构解决路由维护和动态通信量问题.首先,对于路由丢失,MDRSVP能够启用串行路由接替主路由,继续传输数据,弥补因路由失效带来的传输中断;其次,MDRSVP降低每条并行路由使用带宽,并使所有并行路由带宽总和等于应用要求的带宽,从而降低拥塞发生概率,提高其他路径的使用率.当路径带宽满足不了QoS要求时,MDRSVP通过计算路由节点的上游瓶颈带宽和下游节点带宽分配数据流,以此自适应路由通信量的变化.仿真试验表明,MDRSVP算法能够提高QoS路由容错性,降低拥塞,提高网络可升级性.

关 键 词:移动自组网络  服务质量  路由算法  资源预留

Multi-path adaptive dynamic resource reservation routing protocol for ad hoc networks
LIN Wei.Multi-path adaptive dynamic resource reservation routing protocol for ad hoc networks[J].Journal of Harbin Institute of Technology,2009,41(1):269-271.
Authors:LIN Wei
Affiliation:LIN Wei(School of Science in Harbin Engineering University,Harbin 150006,China)
Abstract:Within multimedia environment,there are two problems on Quality-of-Service(QoS) of routing in mobile ad hoc networks.One is routing maintaining issue,and the other is that congestion will take place in QoS routing as traffic changing with applications arising.This paper proposes a multi-path adaptive dynamic resource reservation routing protocol(MDRSVP) for the two problems.It employs a multi-path routing topology with serial and parallel routing structure to solve failure routing and dynamic traffic.Firstly,MDRSVP can start a new serial routing to continue transmitting data as original primary routing fails.This approach does not interrupt a routing from source node to destination node during transmission.Secondly,MDRSVP reduces QoS bandwidth for each parallel routing,but the total of bandwidth in all parallel routings is QoS bandwidth required by application,so as to decrease the congestion in a single QoS routing and increase probability of other paths utilized.In addition,MDRSVP allocates flow to a few applications through calculating the bottle-neck bandwidth of upstream and downstream which adapts dynamic traffic in QoS routing as the bandwidth of MDRSVP routing.Simulation shows that MDRSVP can increase tolerance of QoS routing,decrease congestion of routing,and increase scalability of QoS network.
Keywords:mobile ad hoc networks  quality of service  routing algorithm  RSVP(resource reservation protocol)
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