원문정보
초록
영어
Target area coverage is the most fundamental goal of WSN (Wireless Sensor Network) application, so the design of energy aware based algorithm for coverage time maximization becomes a core problem of a large network. For this reason, a DECAR (Distributed-energy and Coverage Aware Routing) protocol is proposed in this paper to realize the goal of network coverage maximization. Specifically, the rest energy and the coverage overlapping degree of the nodes are considered during CH (cluster head) selection process so as to provide more opportunities for the nodes with more rest energy or higher coverage overlapping degree to become CH; like this, the nodes with less rest energy will not be selected as CH, thus to avoid shortening the network lifetime due to early failure of these nodes and balance the network energy consumption. Meanwhile, the main data transmission line composed of CHs is constructed in the data transmission stage in order to improve data transmission efficiency. The simulation result shows: compared with CPCP-ea and EEUC protocols, the proposed DECAR protocol can obtain longer network lifetime and better data coverage ratio.
목차
1. Introduction
2. Network Model
2.1. Network Time Sequence
2.2. Energy Model
3. DECAR Protocol
3.1. Information Updating
3.2. Clustering Stage
3.3. Main Data Transmission Line
3.4. Data Transmission
4. Performance Simulation
4.1. Simulation Parameters and Performance Indexes
4.2. Network Lifetime and Energy Consumption
4.3. Coverage Ratio
5. Conclusion
Acknowledgement
References