In this article, a routing protocol EARP (Energy Aware Routing Protocol) with the terminal node is proposed, to deal with the impact of the limited energy resources of Cognitive Radio Networks on the whole network rou...In this article, a routing protocol EARP (Energy Aware Routing Protocol) with the terminal node is proposed, to deal with the impact of the limited energy resources of Cognitive Radio Networks on the whole network routing. The protocol allows choosing the route from the neighbor nodes in different transmission paths, according to energy consumption of a single node and the full path. If the path breaks, the protocol will increase local routing maintenance strategy. It effectively reduces the retransmission caused by the situation, and improves the routing efficiency. It also can prevent the link transmission process selecting the fault route due to the energy depletion. Through simulation experiments compared with the LEACH (Low Energy Adaptive Clustering Hierarchy) routing protocol, the results showed that in the same experimental environment, the proposed EARP could obviously balance the load, protect low energy nodes, prolong the network survival time and reduce packet loss rate and packet delay of data delivery. So it can improve the energy consumption of sensing node and provide routing capabilities.展开更多
移动自组织网络(Mobile Ad hoc Network,MANET)的一个典型特点就是网络拓扑结构的动态变化,这个特点造成了在通信过程中路由的频繁切换。而路由频繁切换的过程往往会给上层的服务应用带来不利影响。以在移动场景中综合性能最优的AODV(Ad...移动自组织网络(Mobile Ad hoc Network,MANET)的一个典型特点就是网络拓扑结构的动态变化,这个特点造成了在通信过程中路由的频繁切换。而路由频繁切换的过程往往会给上层的服务应用带来不利影响。以在移动场景中综合性能最优的AODV(Ad hoc on-demand distance vector)协议为研究对象,通过NS2仿真分析了在一个连接运行过程中路由切换的特点,包括路由切换的触发原因、切换时延、切换丢包率等因素。该文对路由切换性能的详细分析结果为将来优化路由维护策略及提升路由切换效率提供了参考和依据。展开更多
车载自组织网络(Vehicular Ad Hoc Network,VANET)技术为人类实现智能交通提供了技术保障.作为VANETs的重要组成部分,路由协议的好坏决定了网络的性能.研究了在Linux嵌入式环境下AODV路由协议的实现方案,完成无线自组织网络车载平台的设...车载自组织网络(Vehicular Ad Hoc Network,VANET)技术为人类实现智能交通提供了技术保障.作为VANETs的重要组成部分,路由协议的好坏决定了网络的性能.研究了在Linux嵌入式环境下AODV路由协议的实现方案,完成无线自组织网络车载平台的设计.在真实场景下,测试其连通性以及路由性能.实验结果表明,该无线自组织网络平台在往返时间以及丢包率方面具有良好的性能.展开更多
文摘In this article, a routing protocol EARP (Energy Aware Routing Protocol) with the terminal node is proposed, to deal with the impact of the limited energy resources of Cognitive Radio Networks on the whole network routing. The protocol allows choosing the route from the neighbor nodes in different transmission paths, according to energy consumption of a single node and the full path. If the path breaks, the protocol will increase local routing maintenance strategy. It effectively reduces the retransmission caused by the situation, and improves the routing efficiency. It also can prevent the link transmission process selecting the fault route due to the energy depletion. Through simulation experiments compared with the LEACH (Low Energy Adaptive Clustering Hierarchy) routing protocol, the results showed that in the same experimental environment, the proposed EARP could obviously balance the load, protect low energy nodes, prolong the network survival time and reduce packet loss rate and packet delay of data delivery. So it can improve the energy consumption of sensing node and provide routing capabilities.
文摘移动自组织网络(Mobile Ad hoc Network,MANET)的一个典型特点就是网络拓扑结构的动态变化,这个特点造成了在通信过程中路由的频繁切换。而路由频繁切换的过程往往会给上层的服务应用带来不利影响。以在移动场景中综合性能最优的AODV(Ad hoc on-demand distance vector)协议为研究对象,通过NS2仿真分析了在一个连接运行过程中路由切换的特点,包括路由切换的触发原因、切换时延、切换丢包率等因素。该文对路由切换性能的详细分析结果为将来优化路由维护策略及提升路由切换效率提供了参考和依据。
文摘车载自组织网络(Vehicular Ad Hoc Network,VANET)技术为人类实现智能交通提供了技术保障.作为VANETs的重要组成部分,路由协议的好坏决定了网络的性能.研究了在Linux嵌入式环境下AODV路由协议的实现方案,完成无线自组织网络车载平台的设计.在真实场景下,测试其连通性以及路由性能.实验结果表明,该无线自组织网络平台在往返时间以及丢包率方面具有良好的性能.
