경영과학 (Korean Management Science Review)

한국경영과학회 (The Korean Operations Research and Management Science Society)
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파티클군집최적화 방법을 적용한 위치관리시스템 최적 설계

Optimal Design of Location Management Using Particle Swarm Optimization

  • 변지환 (강원대학교 산업공학과) ;
  • 김성수 (강원대학교 산업공학과) ;
  • 장시환 (고려대학교 정보보호대학원) ;
  • 김연수 (KT 네트워크기술지원본부, 기술평가)
  • 투고 : 2011.08.29
  • 심사 : 2012.02.03
  • 발행 : 2012.03.31
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초록

Location area planning (LAP) problem is to partition the cellular/mobile network into location areas with the objective of minimizing the total cost in location management. The minimum cost has two components namely location update cost and searching cost. Location update cost is incurred when the user changes itself from one location area to another in the network. The searching cost incurred when a call arrives, the search is done only in the location area to find the user. Hence, it is important to find a compromise between the location update and paging operations such that the cost of mobile terminal location tracking cost is a minimum. The complete mobile network is divided into location areas. Each location area consists of a group of cells. This partitioning problem is a difficult combinatorial optimization problem. In this paper, we use particle swarm optimization (PSO) to obtain the best/optimal group of cells for 16, 36, 49, and 64 cells network. Experimental studies illustrate that PSO is more efficient and surpasses those of precious studies for these benchmarking problems.

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참고문헌

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