Abstract
Aiming at such an application of wireless mesh sensor network (WMSN) so that continuous flow is transmitted, this paper proposes a model "maximum lifetime maximum throughput" based on the ant colony algorithm and minimum cost maximum flow method to address the routing issue between sensor nodes and multiple gateways in WMSN. In the proposed model, a sensor node is allowed to connect through more than one of the available gateways to the Internet. Between the source node and each gateway, a routing path with minimum link cost and maximum available bandwidth is attempted to be found. Then, considering the bandwidth demand of the flow originating from the sensor node and the available bandwidth on each optimal path, the flow traffic is allocated to appropriate gateways. Simulation results have shown that the proposed model not only prolongs network lifetime, but also improves network throughput.
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