Open Science Research Excellence

Wan Yeon Lee

Publications

2

Publications

2
3037
Design and Implementation of Cricket-based Location Tracking System
Abstract:
In this paper, we present a novel approach to location system under indoor environment. The key idea of our work is accurate distance estimation with cricket-based location system using A* algorithm. We also use magnetic sensor for detecting obstacles in indoor environment. Finally, we suggest how this system can be used in various applications such as asset tracking and monitoring.
Keywords:
Cricket, Indoor Location Tracking, Mobile Robot,Localization.
1
14461
A Lifetime-Guaranteed Routing Scheme in Wireless Sensor Networks
Abstract:
In this paper, we propose a routing scheme that guarantees the residual lifetime of wireless sensor networks where each sensor node operates with a limited budget of battery energy. The scheme maximizes the communications QoS while sustaining the residual battery lifetime of the network for a specified duration. Communication paths of wireless nodes are translated into a directed acyclic graph(DAG) and the maximum-flow algorithm is applied to the graph. The found maximum flow are assigned to sender nodes, so as to maximize their communication QoS. Based on assigned flows, the scheme determines the routing path and the transmission rate of data packet so that any sensor node on the path would not exhaust its battery energy before a specified duration.
Keywords:
Sensor network, battery, residual lifetime, routingscheme, QoS