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In the existing clustering protocol, cluster heads (CHs) usually transmit data to Sink directly with long-distance transmission and huge energy consumption. To solve this problem, an inter-cluster gateway-based energy-efficient routing protocol (IGER) is proposed in this paper. It makes cluster heads evenly distributed, chooses appropriate nodes to be gateways for inter-cluster communication to share...
When wireless sensor network used in complex indoor environment, great propagation loss will be caused and difficult to optimize routing adaptively when environment changed. Based on these problems, we presented a protocol-Indoor Energy load-balanced Routing (IEBR). IEBR formulate the routing setup process as the typical multiple attribute decision making process, use objective and subjective weight...
In many adverse or dangerous application environments, parameters in path loss model for wireless channel are unknown, and neighbor nodes are unable to range using RSSI. Forcing on this kind of environment, a localization algorithm based on Particle Swarm Optimization and the mobile anchor in sensor networks is proposed in this paper. Localization process is converted into non-linear constraint optimization...
Characteristics of wireless sensor network are mainly featured in three aspects such as numerous nodes and large-scale networks and restricted operation ability. A frequency points allocation algorithm is proposed in order to decrease collision probability with increasing traffic load in this paper. Based on the coloring, nodes with different frequency points in different cluster can communicate with...
Time synchronization is a critical piece of infrastructure for wireless sensor networks. The existing time synchronization protocols such as GPS and NTP require powerful hardware to support aren't fit to sensor network. This paper analyzes the characteristic of sensor network, propose a time synchronization algorithm based on local level structure. Experiment shows that this method is feasible and...
The main body of this paper is studied specifically for the problem of low-power consumption in wireless sensor network (WSN), and then carries out an experiment. On comparing greedy algorithm and Floyd algorithm with dynamic programming algorithm, finally we adopt the dynamic programming algorithm to improve the route protocol of WSN, and explore an optimal route from Resource node to SINK node,...
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