Directed diffusion for wireless sensor networking
IEEE/ACM Transactions on Networking (TON)
Medium access control with coordinated adaptive sleeping for wireless sensor networks
IEEE/ACM Transactions on Networking (TON)
Networking issues in wireless sensor networks
Journal of Parallel and Distributed Computing
An application-specific protocol architecture for wireless microsensor networks
IEEE Transactions on Wireless Communications
Coverage in wireless ad hoc sensor networks
IEEE Transactions on Computers
IEEE Communications Magazine
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In recent years, many researchers have actively studied communi- cation protocols for wireless sensor networks. Most works are based on the assumption that each sensor node knows its own geographical position by GPS (Global Positioning System). For this, however, we have to pay an extra cost for implementing GPS modules in sensor nodes, and thus the size of sensor node should become large. In this paper, we propose a method by which all the nodes in the sensing field can recognize their own positions without equipping GPS modules in every node. In our scheme, only some nodes are equipped with the GPS modules when the sensing field is deployed, and the others can find out their positions through communications to GPS nodes. To validate our method, we carried out a computer simulation, and observed that all nodes could successfully recognize their own positions in 3 rounds.