A multipath source self repair routing (MSSRR) algorithm for mobile ad hoc networks is proposed. By using multiple paths which can be repaired by themselves to transmit packets alternately, the network's load is b...A multipath source self repair routing (MSSRR) algorithm for mobile ad hoc networks is proposed. By using multiple paths which can be repaired by themselves to transmit packets alternately, the network's load is balanced, the link state in the network can be checked in time, the number of the times the route discovery mechanism starts is decreased. If only one route which will be broken can be used to transmit the packets, the route discovery mechanism is restarted.The algorithm is implemented on the basis of dynamic source routing (DSR). The effect of MSSRR on lifetime of the access from the source to the destination and the overhead is discussed. Compared with the performance of DSR,it can be seen that the algorithm can improve the performance of the network obviously and the overhead almost does not increase if the average hop count is larger.展开更多
We propose an on-demand multipath routing algorithm in a mobile ad hoc network for video transmission and evaluate its real world performance in video streaming application. There have been a number of multipath routi...We propose an on-demand multipath routing algorithm in a mobile ad hoc network for video transmission and evaluate its real world performance in video streaming application. There have been a number of multipath routing protocols extended from AODV which is a well-known single path routing protocol. Multipath routing protocols indicate good performance in the reduction of route discovery latency and unnecessary routing packets in simulations. We show that the route establishment using source route lists provided by us (Hu and Johnson, 2002) can reduce the route discovery latency, select stable routes automatically, and work well for live video streaming without limitation of the hop count based approaches. We evaluate this proposed method compared with the original AODV by using eight laptop PCs and demonstrate live streaming experiments.展开更多
Multipath Protocol Label Switching (MPLS) is a routing mechanism (technology) used in modern telecommunication networks, which is built as a multi-service network with a certain Quality of Service (QoS). To maintain t...Multipath Protocol Label Switching (MPLS) is a routing mechanism (technology) used in modern telecommunication networks, which is built as a multi-service network with a certain Quality of Service (QoS). To maintain the required QoS in such complicated networks, the Traffic Engineering (TE) should be equipped with optimum traffic management, routing mechanism, and switching operations, which are what this paper tackles, where the TE is identified as the optimal distribution of flows in the existing network. In this paper, an effective multipath routing mathematical model is developed based on several previous mechanisms to ensure the guaranteed desired QoS and loading balance according to the Telecommunication Network Systems (TCS) resources, to achieve the optimum TE, and hence improving the network usage efficiency. Moreover, the obtained mathematical optimization algorithm results are provided through the relative equations. Indeed the developed routing mathematical model in this paper is suitable for the dynamic distribution of information flows, which is the main improvement in the TE achieved in this work.展开更多
Ad Hoc网络的服务质量模型中路由选择直接影响网络的可靠性和稳定性。将QoS-MSR多路径路由协议引入了无线移动网络无状态模型(SWAN),利用QoS-MSR的两个显著优点,即既在路由查找过程中带有QoS要求的信息又采用多分裂带宽预留机制(MBSR),...Ad Hoc网络的服务质量模型中路由选择直接影响网络的可靠性和稳定性。将QoS-MSR多路径路由协议引入了无线移动网络无状态模型(SWAN),利用QoS-MSR的两个显著优点,即既在路由查找过程中带有QoS要求的信息又采用多分裂带宽预留机制(MBSR),有效地提高网络服务质量。仿真实验表明,在SWAN模型中采用QoS-MSR路由可以使网络的端到端时延、吞吐量和数据接收率等性能参数都有明显改善。展开更多
In this paper, a QoS multipath source routing protocol (QoS-MSR) is proposedfor ad hoc networks. It can collect QoS information through route discovery mechanism of multipathsource routing (MSR) and establish QoS rout...In this paper, a QoS multipath source routing protocol (QoS-MSR) is proposedfor ad hoc networks. It can collect QoS information through route discovery mechanism of multipathsource routing (MSR) and establish QoS route with reserved bandwidth. In order to reserve bandwidthefficiently, a bandwidth reservation approach called the multipath bandwidth splitting reservation(MBSR) is presented, under which the overall bandwidth request is split into several smallerbandwidth requests among multiple paths. In simulations, the authors introduce Insignia, an in-bindsignaling system that supports QoS in ad hoc networks, and extend it to multipath Insignia(M-Insignia) with QoS-MSR and MBSR. The results show that QoS-MSR routing protocol with the MBSRalgorithm can improve the call admission ratio of QoS traffic, the packet delivery ratio, and theend-to-end delay of both best-effort traffic and QoS traffic. Therefore, QoS-MSR with MBSR is anefficient mechanism that supports QoS for ad hoc networks.展开更多
文摘A multipath source self repair routing (MSSRR) algorithm for mobile ad hoc networks is proposed. By using multiple paths which can be repaired by themselves to transmit packets alternately, the network's load is balanced, the link state in the network can be checked in time, the number of the times the route discovery mechanism starts is decreased. If only one route which will be broken can be used to transmit the packets, the route discovery mechanism is restarted.The algorithm is implemented on the basis of dynamic source routing (DSR). The effect of MSSRR on lifetime of the access from the source to the destination and the overhead is discussed. Compared with the performance of DSR,it can be seen that the algorithm can improve the performance of the network obviously and the overhead almost does not increase if the average hop count is larger.
文摘We propose an on-demand multipath routing algorithm in a mobile ad hoc network for video transmission and evaluate its real world performance in video streaming application. There have been a number of multipath routing protocols extended from AODV which is a well-known single path routing protocol. Multipath routing protocols indicate good performance in the reduction of route discovery latency and unnecessary routing packets in simulations. We show that the route establishment using source route lists provided by us (Hu and Johnson, 2002) can reduce the route discovery latency, select stable routes automatically, and work well for live video streaming without limitation of the hop count based approaches. We evaluate this proposed method compared with the original AODV by using eight laptop PCs and demonstrate live streaming experiments.
文摘Multipath Protocol Label Switching (MPLS) is a routing mechanism (technology) used in modern telecommunication networks, which is built as a multi-service network with a certain Quality of Service (QoS). To maintain the required QoS in such complicated networks, the Traffic Engineering (TE) should be equipped with optimum traffic management, routing mechanism, and switching operations, which are what this paper tackles, where the TE is identified as the optimal distribution of flows in the existing network. In this paper, an effective multipath routing mathematical model is developed based on several previous mechanisms to ensure the guaranteed desired QoS and loading balance according to the Telecommunication Network Systems (TCS) resources, to achieve the optimum TE, and hence improving the network usage efficiency. Moreover, the obtained mathematical optimization algorithm results are provided through the relative equations. Indeed the developed routing mathematical model in this paper is suitable for the dynamic distribution of information flows, which is the main improvement in the TE achieved in this work.
文摘In this paper, a QoS multipath source routing protocol (QoS-MSR) is proposedfor ad hoc networks. It can collect QoS information through route discovery mechanism of multipathsource routing (MSR) and establish QoS route with reserved bandwidth. In order to reserve bandwidthefficiently, a bandwidth reservation approach called the multipath bandwidth splitting reservation(MBSR) is presented, under which the overall bandwidth request is split into several smallerbandwidth requests among multiple paths. In simulations, the authors introduce Insignia, an in-bindsignaling system that supports QoS in ad hoc networks, and extend it to multipath Insignia(M-Insignia) with QoS-MSR and MBSR. The results show that QoS-MSR routing protocol with the MBSRalgorithm can improve the call admission ratio of QoS traffic, the packet delivery ratio, and theend-to-end delay of both best-effort traffic and QoS traffic. Therefore, QoS-MSR with MBSR is anefficient mechanism that supports QoS for ad hoc networks.
