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Higher-powered relay nodes have been proposed as cluster heads in hierarchical sensor networks to increase the network connectivity, coverage and lifetime. Determining an appropriate placement scheme of the relay nodes that ensures adequate coverage and connectivity, while using a minimum number of relay nodes, is an important design problem and a significant amount of work has been done in this area...
Compared with other routing metrics, such as RTT, PktPair, ETT has become the tendency for routing selecting in wireless mesh networks (WMNs). However, in ETT, the node quality is not considered. In this paper, the time during which the packet cached in the relay node is defined as node quality, while this caching time is for the node contending for the channel successfully to transmit it. To calculate...
This paper presents a pipelined prototype for a planned 2.4 GHz wireless MIMO mesh network. The prototype design and channel allocation method are investigated in detail. MIMO's interference cancellation algorithm and MIMO-MU model are used to allow more parallel streams at one time, which greatly improves the throughput both for UDP and TCP transmission. The three non-overlapped channels are all...
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