Research Article Open Access

Weighted Centroid Correction Localization in Cellular Systems

Rong-Zheng Li1, Xin-Long Luo1 and Jia-Ru Lin1
  • 1 ,
American Journal of Engineering and Applied Sciences
Volume 4 No. 1, 2011, 37-41

DOI: https://doi.org/10.3844/ajeassp.2011.37.41

Submitted On: 17 October 2010 Published On: 27 January 2011

How to Cite: Li, R., Luo, X. & Lin, J. (2011). Weighted Centroid Correction Localization in Cellular Systems. American Journal of Engineering and Applied Sciences, 4(1), 37-41. https://doi.org/10.3844/ajeassp.2011.37.41

Abstract

Problem statement: There is a large demand for wireless Location-Based Service (LBS) and it is provided by many wireless cellular systems. In process of positioning a Mobile Station (MS), the computing speed is as important as the positioning accuracy and the algorithm should also be resistant to environmental influences. Approach: A new positioning method based on Weighted Centroid Correction Localization (WCCL) for wireless cellular systems is introduced in this article. Firstly, referring to the receiving-state of an MS in cellular systems, it computes a weighted centroid of surrounding Base Stations (BSs) as a rough approximate position of the MS. Then, according to the distances between the MS and the BSs being less or bigger than the computed distances between the BSs and the weighted centroid, it corrects the coordinate of the weighted centroid towards the directions of the BSs by moving it closer or farther in turn. Results: According to our experiments, WCCL improves the positioning accuracy, as well as to provide a better resistance to environmental influences. Conclusion: As a modified centroid-based localization algorithm, WCCL obtains weighting factors from the receiving-state of MS in multi-cells structured cellular systems and obtains a better positioning result in cellular systems without updating the network equipment. Therefore, for the cellular positioning problem, WCCL algorithm can be an alternate solution.

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Keywords

  • Wireless positioning method
  • Location-Based Service (LBS)
  • geometric distance
  • Base Stations (BSs)
  • weighted centroid correction localization (WCCL)
  • cellular systems
  • Arrival Of Angle (AOA)
  • Location Measurement Unit (LMU)
  • Effective Cells (ECs)