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In this paper, two hybrid multi-hop/single-hop opportunistic transmission strategies for lifetime extension of WSNs are proposed. To prolong the network lifetime, a systematic model that contains a network distribution block, a routing algorithm block, a traffic pattern block and an optimal policy block is presented to determine the optimal transmission probability of each node. With the global routing...
In mobile communication services, users wish to subscribe to high-quality service at a low price level, which leads to competition between mobile network operators (MNOs). The MNOs compete with each other by service prices after deciding the extent of investment to improve quality of service. Unfortunately, the theoretic backgrounds of price dynamics are not known to us, and as a result, effective...
In recent years, to satisfy people's need for wireless services, the number of access points of the 3G-based systems, WiFi and WiMAX has been increased exponentially by wireless service providers (WSPs). As a result, there are many WSPs coexisting in the same hotspot area, which drives price competition among WSPs. Existing researche shows that each WSP will lower its price to increase revenue or...
In the fields of deployments in wireless sensor networks, the method of stationary sensor nodes deployed in the area has already been done extensively. However, in a multilayer wireless sensor network, the deployment and movement control strategy for mobile nodes was done little. To guarantee the reliability of the data transmission, this paper proposes a virtual grid partition deployment method,...
Hierarchical routing protocols are critical for the wireless sensor networks (WSN) to maximize its lifetime, but the existing protocols are prone to lead nodes in clusters to die early due to ignoring the state of neighbors in the cluster head decision. In this paper, a new cluster-based optimization algorithm is set up which optimizes clustering process, to effectively avoid the low-energy and long-distance...
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