병원 무선 인터넷에서 차등 핸드오프에 의한 QoS 개선

• 영문명: Improving QoS using Different Handoff in Hospital Wireless Network
• 발행기관: 한국전자통신학회
• 저자명: 석경휴(Kyung Hyu Suk) 김성홍(Sung Hong Kim) 유은영(Eun Young Yu)
• 간행물 정보: 『한국전자통신학회 학회지』제2권 제1호, 31~38쪽, 전체 8쪽
• 주제분류: 공학 > 전자/정보통신공학
• 파일형태: PDF
• 발행일자: 2008.06.22

영문 초록

In this paper, we propose for improving QoS in wirless micro cellular network using Cellular-IP/PRC(Paging Route Cache) with Paging Cache and Route Cache in Cellular-IP and propose for performance of realtime and non-real time handoff service using Handoff state machine Paging Route Cache. Although the Cellular-IP/PRC technology is devised for mobile internet communication, it has its vulnerability in frequent handoff environment. On the other hand, Cellular IP combines the capability of cellular networks to provide high performance handoff and efficient location management of active and idle mobile users with the inherent flexibility, robustness and scalability found in IP networks. Also Cellular-IP/PRC use semi-soft handoff. During semi-soft handoff a mobile host may be in contact with either of the old and new base stations and receive packets from them. Packets intended to the mobile node are sent to both base stations and buffered, so when the mobile host eventually moves to the new location it can continue to receive packets without interruption. It should be suitable for realtime service such as multimedia traffic. But, much waste of resource will occur in this method, especially for non-realtime services such as FTP and E-mail. Therefore, a new algorithm that performs different handoff according to characteristic of each traffic by use of reserved field in IP packet is proposed in this thesis. This handoff state machine using differentiated handoff improves quality of services in Cellular-IP/PRC. Suggested algorithm shows better performance than existing technology in wireless mobile internet communication environment. Matlab simulation results are improving QoS, show call drop and call blocking provided to Paging Router Cache during handoff state machine in Cellular-IP/PRC.

목차

Abstract

Ⅰ. 서론

Ⅱ. 무선 인터넷 네트워크

Ⅲ. 셀룰라 IP/PRC

Ⅳ. 셀룰라 IP/PRC 네트워크의 QoS

Ⅴ. 결론

참고문헌

키워드

Cellular-IP PC RC PRC QoS GoS