IE interfaces (산업공학)

Korean Institute of Industrial Engineers (대한산업공학회)
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Dynamic Location Area Management Scheme Using the Historical Data of a Mobile User

이동통신 사용자의 이력자료를 고려한 동적 위치영역 관리기법

  • Lee, J.S. (Samsung Electro-Mechanics) ;
  • Chang, I.K. (Department of Industrial Engineering, Seoul National University) ;
  • Hong, J.W. (Department of Industrial Systems Engineering, Hansung University) ;
  • Lie, C.H. (Department of Industrial Engineering, Seoul National University)
  • Received : 20050400
  • Accepted : 20051000
  • Published : 2005.12.31
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Abstract

Location management is very important issue in wireless communication system to trace mobile users' exact location. In this study, we propose a dynamic location area management scheme which determines the size of dynamic location area considering each user's characteristics. In determining the optimal location area size, we consider the measurement data as well as the historical data, which contains call arrival rate and average speed of each mobile user. In this mixture of data, the weight of historical data is derived by linear searching method which guarantees the minimal cost of location management. We also introduce the regularity index which can be calculated by using the autocorrelation of historical data itself. Statistical validation shows that the regularity index is the same as the weight of measurement data. As a result, the regularity index is utilized to incorporate the historical data into the measurement data. By applying the proposed scheme, the location management cost is shown to decrease. Numerical examples illustrate such an aspect of the proposed scheme.

Keywords

References

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