为了提高车联网(Vehicle Ad hoc Networks,VANETs)中消息的分发效率,考虑V ANETs与长期演进LTE(Long-Term Evolution)的异构网络,并提出基于移动网关选择的数据传输策略(Data transmission strategy based on mobile gateway selection,...为了提高车联网(Vehicle Ad hoc Networks,VANETs)中消息的分发效率,考虑V ANETs与长期演进LTE(Long-Term Evolution)的异构网络,并提出基于移动网关选择的数据传输策略(Data transmission strategy based on mobile gateway selection,DTMS)o DTMS策略将VANETs内的车辆划分为四类。并通过链路质量和车辆的移动速度信息择优选择车辆作为网关,并由网关协助车辆向Internet转发数据。同时,依据贪婪转发策略,选择下一跳转发节点。仿真结果表明,提出的DTMS策略有效地提高了数据包传递率,并控制路由开销。与按需平面距离向量路由(Ad hoc On-demand Distance Vector Routing,AODV)路由相比,DTMS策略的数据包传递率和归一化路由开销性能分别提高了近44.17%和15.87%.展开更多
An improved internetworking approach is proposed to enhance the Internet connectivity which is deteriorated due to unidirectional links and blind rebroadcasting of gateway discovery packets for mobile ad hoc networks....An improved internetworking approach is proposed to enhance the Internet connectivity which is deteriorated due to unidirectional links and blind rebroadcasting of gateway discovery packets for mobile ad hoc networks. The hybrid gateway discovery scheme that combined the advantages of a proactive and reactive gateway discovery approach is used to achieve high connectivity while keeping overhead costs low. By exchanging ad hoc on-demand distance vector （AODV） hello packet which includes additional fields named symmetric neighbor list and asymmetric neighbor list, unidirectional links are removed from route computation and broadcast storm can also be relieved simultaneously. Performance results using ns-2 simulations, under varying numbers of unidirectional links and node speeds, show that this improved Internet connectivity approach can provide better performance than others.展开更多
In this paper, a model of translation gateway is proposed. The communications between IPv4 network and IPv6 network are realized by using the Microsoft intermediate driver technology in environment of Windows 2000.
文摘为了提高车联网(Vehicle Ad hoc Networks,VANETs)中消息的分发效率,考虑V ANETs与长期演进LTE(Long-Term Evolution)的异构网络,并提出基于移动网关选择的数据传输策略(Data transmission strategy based on mobile gateway selection,DTMS)o DTMS策略将VANETs内的车辆划分为四类。并通过链路质量和车辆的移动速度信息择优选择车辆作为网关,并由网关协助车辆向Internet转发数据。同时,依据贪婪转发策略,选择下一跳转发节点。仿真结果表明,提出的DTMS策略有效地提高了数据包传递率,并控制路由开销。与按需平面距离向量路由(Ad hoc On-demand Distance Vector Routing,AODV)路由相比,DTMS策略的数据包传递率和归一化路由开销性能分别提高了近44.17%和15.87%.
基金The National Natural Science Foundation of China(No60362001)
文摘An improved internetworking approach is proposed to enhance the Internet connectivity which is deteriorated due to unidirectional links and blind rebroadcasting of gateway discovery packets for mobile ad hoc networks. The hybrid gateway discovery scheme that combined the advantages of a proactive and reactive gateway discovery approach is used to achieve high connectivity while keeping overhead costs low. By exchanging ad hoc on-demand distance vector （AODV） hello packet which includes additional fields named symmetric neighbor list and asymmetric neighbor list, unidirectional links are removed from route computation and broadcast storm can also be relieved simultaneously. Performance results using ns-2 simulations, under varying numbers of unidirectional links and node speeds, show that this improved Internet connectivity approach can provide better performance than others.
基金Supported by the Natural Science Foundation of Henan Province(0511011400) Supported by the Natural Science Foundation of Education Department of Henan Province(2004520014)
文摘In this paper, a model of translation gateway is proposed. The communications between IPv4 network and IPv6 network are realized by using the Microsoft intermediate driver technology in environment of Windows 2000.
