Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Two-Level Resource Reservation and Call Admission Control Scheme By Discriminating Handoffs

핸드오프 호의 분류를 이용한 2-레벨 자원 예약 및 호 수락 제어 방식

  • 이원열 (성심외국어대학 정보통신학부) ;
  • 장성식 (김천대학 전산정보처리과) ;
  • 변태영 (경주대학교 컴퓨터전자공학부) ;
  • 한기준 (경북대학교 컴퓨터공학과)
  • Published : 2001.09.25
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Abstract

Most handoff control schemes try to offer the negotiated QoS by resource reservation for handoff calls. However, it is very difficult to determine the optimal amount of reservation resource for the handoff calls, and sometimes a considerable waste of network resource may be caused. In order to solve this problem, we propose a 2-level resource reservation and call admission control scheme. In our scheme, handoffs are classified into two types (primary and secondary) based on how often they occur and are dealt with in different ways. Simulation results show that our scheme may allow more efficient utilization of network resource without degrading QoS comparing with the existing with legacy handoff control scheme.

대부분의 핸드오프 셰어 기법들은 셀에 핸드오프를 위한 자원을 미리 예약하여 적절한 수준의 QoS를 제공할 수 있도록 하고 있다. 미리 예약된 자원은 오직 핸드오프만을 위해 사용되는데 예약 자원의 크기를 적절히 정하지 못하면 상당한 망 자원의 낭비를 초래하게 된다. 이러한 문제를 해결하고자 본 논문에서는 이동 단말들의 경로별 이동 발생 빈도를 기준으로 핸드오프 호의 종류를 2가지로 분류하여 차별적으로 자원 예약을 수행하는 2-레벨 자원 예약 방식과 핸드오프의 종류에 따라 예약 자원을 차별적으로 운용할 수 있는 호 수락 제어 방식을 제안한다. 본 논문에서는 제안한 2레벨 자원 예약 방식과 호 수락 제어의 효용성 검증을 위해 기존의 핸드오프 제어 방식과의 성능 비교 실험을 한 결과 본 논문의 방식이 사용자 QoS를 저하시키지 않고 망 자원을 효율적으로 이용할 수 있음을 보였다.

Keywords

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