In this paper, we have introduced a cross-layer design model which is based on multimedia services in order to favor the QoS demand in wireless mesh networks. By means of this model the relevant parameters in each lay...
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A considerable amount of energy efficient routing algorithms have been proposed to save energy and prolong network lifetime. Those algorithms mainly focus on forwarding packets along the minimum energy path to the sin...
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ISBN:
(纸本)9781509025367
A considerable amount of energy efficient routing algorithms have been proposed to save energy and prolong network lifetime. Those algorithms mainly focus on forwarding packets along the minimum energy path to the sink to merely minimize energy consumption, which causes an unbalanced distribution of residual energy among sensor nodes, and eventually results in a network partition. In this paper, we propose a distributed energy balanced routing algorithm using energy prediction metric (EBEP). The routing scheme considers not only efficient energy but also energy balance. Firstly, with the help of Markov chain model and state conversion model, the future residual energy of front neighbor nodes can be predicted so that it is the most important local information when a node makes routing decision. Furthermore, the function of cost is adopted by our EBEP routing algorithm in order to synthetically evaluate and then select the best candidate of next step. Finally, the experimental results demonstrate the performance advantages of our EBEP routing algorithm.
Clustering protocol for data gathering is one of the effective ways to solve the energy hole problem in wireless sensor networks. However, most of the existing clustering protocols focus on the network model with unif...
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Clustering protocol for data gathering is one of the effective ways to solve the energy hole problem in wireless sensor networks. However, most of the existing clustering protocols focus on the network model with uniform node distribution. They cannot effectively apply to the real network where the sensor nodes are randomly non-uniformly deployed. In this paper, we propose an energy-balanced clustering routing protocol (EBCRP) based on task separation. In this scheme, the network is firstly divided into clusters by using global information. And each of them has the same number of sensor nodes in order to balance the energy consumption of intra-cluster. In succession, task separation, the tasks of traditional single cluster head are separated and achieved by two cluster heads respectively, is proposed to reduce the traffic burden for single cluster head. Then, we explore an energy-efficient and reliable inter-cluster routing algorithm, which considers comprehensively three factors: residual energy, distance and availab.e buffer space of nodes. Simulation results and performance evaluation of EBCRP show significant improvement in network lifetime and energy balance.
Clustering is one of the effective ways to solve energy hole problem for Wireless Sensor network. So far, the approaches of heterogeneous cluster size mainly have concentrated on the design of unequal cluster protocol...
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