As a core technology of Intemet of Things （loT）, Wireless Sensor Network （WSN） has become a research hotspot recently. More and more WSNs are being deployed in highly mobile environments. The fast moving sensor no...As a core technology of Intemet of Things （loT）, Wireless Sensor Network （WSN） has become a research hotspot recently. More and more WSNs are being deployed in highly mobile environments. The fast moving sensor nodes bring significant challenges for the routing decision. In this paper, we propose an efficient logical location method, and designe a mobility estimating metric and derive a novel Green Mobility Estirmtion- based Routing protocol （G-MER） for WSNs. We also set up a full framework to evaluate its per- formance. Simulation results illustrate that G-MER achieves a fairly better perforrmnce in terrm of broadcast times and link failures than AODV. What＇s more, it decreases the mean hops by about 0.25 and reduces energy consumption by about 10% during the whole experiment. All the results show that G-MER can be effectively used in fast- moving and limited resource scenarios.展开更多
In recent years, the development of mobile equipment makes the topology of the network to change rapidly. So that its routing problem an important research subject accordingly. In all the proposed protocols, the Ad H...In recent years, the development of mobile equipment makes the topology of the network to change rapidly. So that its routing problem an important research subject accordingly. In all the proposed protocols, the Ad Hoc On-demand Distance Vector Routing Protocol（AODV） is applied to most wireless environments. With it, the shortest path from the source to destination node is chosen by the metric of hop counts. However, the chosen path with this metric may not be a stable one. With the research of predecessors, the Link Available Time（LAT ） can be calculated by the strength of received signal and may be regarded as another usable routing metric. Based on that, the authors develop a protocol named AODV-Deleting Path with Bad Broken Index （AODV-DPWBB） and discuss all the logicality of it. The simulation is done for two contention modes in several node speeds with discussion followed. The simulation result shows better throughput, and end-to-end delay can be obtained comparing the original AODV with metric of hop-count.展开更多
A self-adapting and reconfigurable routing mechanism is proposed according to the average moving speed of the nodes in mobile ad hoc network （MANET）. This mechanism is based on the perception of moving speed and a p...A self-adapting and reconfigurable routing mechanism is proposed according to the average moving speed of the nodes in mobile ad hoc network （MANET）. This mechanism is based on the perception of moving speed and a predesigned selection metric to choose the optimal routing protocol. The routing evaluation and selection metric is derived by OPNET simulations. AODV and OLSR are used as the example to show the process of this mechanism with the moving speed varying. The routing protocol can be configured without central configuration and human management. Besides, the overhead of the mechanism is reasonable and doesnot affect the quality of service （QoS） of the traffic in the network. Results show that the optimal routing protocol can be configured adaptively according to the speed so that better performance than end-to-end delay and packet delivery ratio. a specific protocol can be obtained in terms of展开更多
基金This paper was partially supported by the National Natural Science Foundation of China under Crants No. 61003283, No. 61001122 Beijing Natural Science Foundation of China under Crants No. 4102064+2 种基金 the Natural Science Foundation of Jiangsu Province under Crant No. BK2011171 the National High-Tech Research and Development Program of China under Crant No. 2011 AA010701 the Fundamental Research Funds for the Cen- tral Universities under Ccants No. 2011RC0507, No. 2012RO3603.
文摘As a core technology of Intemet of Things （loT）, Wireless Sensor Network （WSN） has become a research hotspot recently. More and more WSNs are being deployed in highly mobile environments. The fast moving sensor nodes bring significant challenges for the routing decision. In this paper, we propose an efficient logical location method, and designe a mobility estimating metric and derive a novel Green Mobility Estirmtion- based Routing protocol （G-MER） for WSNs. We also set up a full framework to evaluate its per- formance. Simulation results illustrate that G-MER achieves a fairly better perforrmnce in terrm of broadcast times and link failures than AODV. What＇s more, it decreases the mean hops by about 0.25 and reduces energy consumption by about 10% during the whole experiment. All the results show that G-MER can be effectively used in fast- moving and limited resource scenarios.
基金supported by National Taiwan University of Science and Technology
文摘In recent years, the development of mobile equipment makes the topology of the network to change rapidly. So that its routing problem an important research subject accordingly. In all the proposed protocols, the Ad Hoc On-demand Distance Vector Routing Protocol（AODV） is applied to most wireless environments. With it, the shortest path from the source to destination node is chosen by the metric of hop counts. However, the chosen path with this metric may not be a stable one. With the research of predecessors, the Link Available Time（LAT ） can be calculated by the strength of received signal and may be regarded as another usable routing metric. Based on that, the authors develop a protocol named AODV-Deleting Path with Bad Broken Index （AODV-DPWBB） and discuss all the logicality of it. The simulation is done for two contention modes in several node speeds with discussion followed. The simulation result shows better throughput, and end-to-end delay can be obtained comparing the original AODV with metric of hop-count.
文摘A self-adapting and reconfigurable routing mechanism is proposed according to the average moving speed of the nodes in mobile ad hoc network （MANET）. This mechanism is based on the perception of moving speed and a predesigned selection metric to choose the optimal routing protocol. The routing evaluation and selection metric is derived by OPNET simulations. AODV and OLSR are used as the example to show the process of this mechanism with the moving speed varying. The routing protocol can be configured without central configuration and human management. Besides, the overhead of the mechanism is reasonable and doesnot affect the quality of service （QoS） of the traffic in the network. Results show that the optimal routing protocol can be configured adaptively according to the speed so that better performance than end-to-end delay and packet delivery ratio. a specific protocol can be obtained in terms of
