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The original routing mechanism with the routing metric of ETX (Expected Transmission Count) cannot assure good performance at different network environments. That is because fixed probe interval of ETX cannot adapt the change of network environment. Through simulations we verify the problem of ETX and find the relationship between routing performance and network factor (data rate). Then we propose...
WMN (Wireless Mesh Network) is a useful wireless multi-hop network with tremendous research value. A good routing mechanism for WMN can use the whole bandwidth of the network and can assure the quality of service of traffic. Through simulations we verify that the routing metric ETX (Expected Transmission Count) cannot assure good quality of wireless links. To improve the routing performance, a QoS-assured...
In wireless mesh networks (WMNs), if nonoverlapped channels or partially overlapped channels are used properly, the throughput can be improved drastically. However, the number of nonoverlapped channels is limited in wireless communication standards. An effective channel assignment algorithm for a WMN is necessary to increase the utilization rate of space and nonoverlapped channels. Static channel...
The interference between wireless communications may cause packet loss and bit error. There are multi-channels in wireless standards such as IEEE802.11b/g, the packet loss rate caused by interference between channels is different. Experiments are done to show the transition feature between channels in IEEE 802.1 lb/g standard. The results show that the traffic throughput depends on the radio frequencies...
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