(A) new scheme for seamless handoffs in wireless ATM networks using the 2-layered cluster concept2 계층 클러스터 개념을 이용한 무선 ATM 망에서의 핸드오프 방안

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In this thesis, we propose a new handoff scheme using the 2-layered cluster concept for the seamless handoffs between clusters in cellular wireless ATM networks. In wireless ATM networks, the seamless handoff schemes between cells or clusters are needed to support various QoSs for each class of service. The handoff between the cells whose corresponding base stations are connected to a same ATM switch, i.e. intra-cluster handoff can operate without the path rerouting and the handoff delay is negligible. But when an intra-cluster handoff occurs, it needs to reroute communication path and some delay-sensitive connections are forced to be terminated by the long handoff delay. To solve this problem, many schemes to reduce inter-cluster handoff delay has been suggested. But the shorter the path rerouting time, the larger waste of network resources and computing power. With the proposed 2-layered cluster concept, the networks are clustered into two layers. In this proposed scheme, one base station is connected to two different ATM switches, and then one cell belongs to two clusters each of them belongs to different cluster layers respectively. The network with this concept can support seamless inter-cluster handoff regardless of path rerouting time, reduce the pingpong effects at the border of clusters, and increase the channel efficiency of wired channel. Such advantageous features of 2-layered network neither incur any increase of inter-cluster handoff rate nor requires additional ATM switches.
Advisors
Shin, Byung-Cheol신병철
Description
한국과학기술원 : 전기및전자공학과,
Publisher
한국과학기술원
Issue Date
1998
Identifier
134827/325007 / 000963207
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학과, 1998.2, [ vii, 53 p. ]

Keywords

Handoff; Mobility; Wireless ATM; Path rerouting; 경로 재설정; 핸드오프; 이동성; 무선 ATM

URI
http://hdl.handle.net/10203/37044
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=134827&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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