Enhanced RAMA wireless access protocol for multi-media wireless networks멀티미디어 무선망을 위한 개선된 RAMA 무선 액세스 프로토콜

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We propose an Enhanced Resource Auction Multiple Access (ERAMA) protocol for the future wireless multi-media communications by enhancing the original Resource Auction Multiple Access (RAMA) protocol by N. Amitay. The enhanced features of the ERAMA protocol include the reduced control overhead caused by the auction mechanism, the capability of supporting variable bit rate services, the reduced channel allocation delay and delay variation, and the capability of supporting multiple quality of service levels. Simulation study shows that the ERAMA protocol gives shorter multiple access delay, smaller delay variation, less mean number of accesses and lower talk spurt loss probability than those of the RAMA. The ERAMA system which includes the ERAMA protocol, the request buffer in the Base Station Controller (BSC) and the radio channels is analyzed by a two-stage queueing system. The first stage representing the ERAMA protocol id mofrlrf as an M/D/1 system, and the second stage representing the request buffer and the radio channel is modeled as an MMBP/Geo/$N_{ch}$/L queueing system. The output process of the M/D/1 system is approximated as a k-stae MMBP. We introduce a parameter $P_{\alpha,s}$ denoting the probability that a customer departing the first queueing stage enters the second stage waiting room. The $P_{\alpha,s}$ successfully describes the talk spurt loss caused by the multiple access delay. The analytical model yields upper estimates for the loss probability of talk spurt, the mean auction delay and the mean buffering delay of requests, and the channel utilization. We also make comparisons between the achievable multiplexing gain of speech connections of the ERAMA and the Packet Reservation Multiple Access (PRMA) protocol, and the results show that the proposed ERAMA protocol yields higher gain than the PRMA for the given parameters. We investigate the performance of the ERAMA protocol in an environment accommodating voice and data traffic. We propo...
Advisors
Sung, Dan-Keunresearcher성단근researcher
Description
한국과학기술원 : 전기및전자공학과,
Publisher
한국과학기술원
Issue Date
1997
Identifier
128927/325007 / 000925378
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 전기및전자공학과, 1997.8, [ x, 132 p. ]

URI
http://hdl.handle.net/10203/36408
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=128927&flag=dissertation
Appears in Collection
EE-Theses_Ph.D.(박사논문)
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