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

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

이동체 추적 기법들

Mobile Tracking Schemes

  • 발행 : 2003.04.01
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초록

마이크로/피코셀 환경 하에서 이동체의 빈번한 위치 및 셀간 이동으로 인하여 많은 부가 트래픽이 발생한다. 이동체 위치 추정을 이용함으로서 효율적인 채널 할당과 QoS를 보장하는 핸드오프가 가능하다. 기존의 이동체 위치 추정 방안들은 단지 LOS 환경을 기반으로 하여 제시되었고 다중 경로 환경 또는 shadowing 환경에서는 성능의 감소를 가져왔다. 본 연구에서는 NLOS 환경, 그리고 수신 신호 세기 이외에 부정확한 다수의 위치 결정 파라미터를 고려함으로서 추정의 정확성을 증가시키는 새로운 위치 추정 방안들을 제시한다.

In the microcell-or picocell-based system the frequent movements of mobiles bring about excessive traffics into the networks. A mobile location estimation mechanism can facilitate both efficient resource allocation and better QoS provisioning through handoff optimization. Existing location estimation schemes consider only LOS model and have poor performance in presence of multi-path and shadowing. In this paper we study novel schemes which can increase estimation accuracy by considering NLOS environment and other multiple decision parameters than the received signal strength.

키워드

참고문헌

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