期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2013
卷号：4
期号：2
页码：334-337
出版社：TechScience Publications
摘要：Ad-Hoc sensor networks usually consist of mobile battery operated computing devices that communicate over the wireless medium. As these devices are battery operated and therefore need to be energy conserving so that the battery life of each individual node can be long-lasting. To maximize the lifetime of an ad hoc WSN, it is essential to prolong each individual node (mobile) life through minimizing the total consumption for each communication (transmission and reception energy) request. Therefore, an efficient energy aware scheme would satisfy the energy consumption rate at each node. This work presents a power saving technique by suggesting an energy aware scheme for multi-hop ad hoc wireless sensor networks that reduce energy consumption without significantly diminishing the capacity or connectivity of the network. Our work builds on the observation that when a region of a shared-channel wireless network has a sufficient density of nodes, only a small number of them need be “ON” at any time to forward traffic for active connections. The proposed “QoS Provision Energy aware” scheme is a distributed scheme, where nodes make local decisions on whether to remain in the idle state, or to be in a forwarding backbone as a coordinator. Each node bases its decision on the topology of the network, and the amount of energy needed to communicate with nodes. A new “QoS Provision Energy aware” for wireless sensor networks is used to reduce the communication overhead, and improve the network lifetime and node energy utilization of the network. Results obtained by a simulation campaign show that the proposed scheme has some important advantages that makes it a valuable candidate to be particularly suitable in environments where fast communication establishment and minimum energy overhead are requested. Also simulation results show the improvement of the network performance, in terms of Throughput, Energy, and Hop Count, through use of the new routing algorithm. The proposed scheme is simulated in NS2 software (version NS - 2.33). We conducted a complete set of simulations to compare and contrast the performance of energy consumption and network lifetime metrics. Our analysis provides a comparison of the performances between proposed scheme and existing model using AODV protocol. Our simulations show that with a practical energy model, system lifetime of a wireless sensor network with our Energy model is a factor of two better than without. Additionally, the proposed model also improves QoS parameters: communication latency and capacity. The results of our simulationbased analysis are presented in Chapter 5.
