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In this paper we consider a system that uses computation offloading, where an infrastructure-based cloud server executes jobs on behalf of a set of mobile devices. In this type of system, mobile job completion times include the latency needed for uploading to the cloud server. Since the processed jobs are subject to hard deadline constraints, this can introduce energy unfairness where mobile devices...
This paper studies the incentive mechanism for selfish nodes in Ad Hoc network. We propose a service negotiation mechanism based on WASP algorithm and genetic algorithm (GA). The mechanism has been improved in two areas, first it presents a filtering strategy to select the negotiation nodes, and in addition, it adopts an improved genetic algorithm to generate the offers. In filtering strategy, the...
A lot of access points (APs) in wireless mesh networks (WMNs) are battery powered. In order to minimize their energy consumption, the APs can adaptively adjust their transmission power and time based on various network conditions. In this paper, the problem of minimizing the AP energy consumption is formulated as an optimization problem with the constraint to satisfy the throughput requirements of...
The energy balancing is one of the main concerns in wireless sensor networks (WSNs). Different from current methods, this paper attempts to solve the unbalanced energy consumption problem in the orthogonal frequency division multiplexing (OFDM) system for a WSN. The objective is to increase the sum throughput with almost equal energy consumption among the sensor nodes. Inspired by this goal, we formulated...
Roadside infrastructure can be used provide a wide variety of commercial services in vehicular ad hoc networks. One particular challenge is that of providing roadside radio coverage in highway locations where wired electricity is not available. In this case, roadside access points (APs) powered by renewable energy such as solar power, is a viable alternative. The cost of provisioning this type of...
In a wireless sensor network (WSN) with specially deployed cluster heads (CHs), association relation between sensor nodes and the CHs is important as it affects the radio resource allocations, which further determine the overall network throughput, energy consumption, and other performance. In a lot of cases, the CHs are placed in random locations, and strong overlapping may exist between their coverage...
This paper proposes an Energy Efficient Clustering Scheme for mobile ad hoc networks. In the initial clustering stage, a node's residual energy, nearby topology, relative location and relative mobility are used for determining whether the node is suitable for being a cluster head. In the cluster maintaining stage, a strategy called Distance Estimation Broadcasting is designed to help a cluster member...
In this paper we propose a new approach to designing a large scale wireless sensor network (WSN) with a cluster-tree topology. Sensors in each cluster communicate directly with their associated cluster head (CH) through contention-based transmissions, and communications between CHs use contention free transmissions. The objective is to balance the energy consumptions of all the CHs, while providing...
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