A Cost-Minimization Algorithm for Fast Location Tracking in Mobile Wireless Networks
Journal Article - Open Access
North Carolina State University Raleigh United States
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Location tracking is one of the most important issues in providing real-time applications over wireless networks due to its effect to quality of service QoS, such as end-to-end delay, bandwidth utilization, and connection dropping probability.In this paper, we study cost minimization for locating mobile users under delay constraints in mobile wireless networks.Specifically, a new location tracking algorithm is developed to determine the position of mobile terminals under delay constraints, while minimizing the average locating cost based on a unimodal property. We demonstrate that the new algorithm not only results in minimum locating cost, but also has a lower computational complexity compared to existing algorithms. Furthermore, detailed searching procedures are discussed under both deterministic and statistic delay bounds. Numerical results for a variety of location probability distributions show that our algorithm compares favorably with existing algorithms.
- Radio Communications