The active badge location system
ACM Transactions on Information Systems (TOIS)
The Cricket location-support system
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
GPS-Free Positioning in Mobile ad-hoc Networks
HICSS '01 Proceedings of the 34th Annual Hawaii International Conference on System Sciences ( HICSS-34)-Volume 9 - Volume 9
A Survey of Context-Aware Mobile Computing Research
A Survey of Context-Aware Mobile Computing Research
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This paper presents an enhanced positioning probability algorithm. This algorithm is a completely improved algorithm for locating mobile nodes in defective environment of trilateration location system. The positioning node can find its location with just two reference nodes and their neighbor information. Using numerical analysis model and ad hoc network model, this paper analyzes the effects of positioning probability enhancement and control messages overhead. And this algorithm is also implemented on Linux systems and we test the system at playground. In the pure lateration location system, when a locating node has just two reference nodes, the probability of its positioning is zero but our system is about 80% positioning rate with the average control messages less than 0.5 at 100 reference nodes.