Improving methods of ICMA/CD protocol in packet mobile radio networks and their performance analysis이동 패킷통신망에서의 ICMA/CD 프로토콜의 성능개선방법 및 성능분석

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dc.contributor.advisorKim, Myung-Hwan-
dc.contributor.advisor김명환-
dc.contributor.authorSong, Jae-Sub-
dc.contributor.author송재섭-
dc.date.accessioned2011-12-14-
dc.date.available2011-12-14-
dc.date.issued1991-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=61694&flag=dissertation-
dc.identifier.urihttp://hdl.handle.net/10203/36135-
dc.description학위논문(박사) - 한국과학기술원 : 전기 및 전자공학과, 1991.2, [ viii, 116 p. ]-
dc.description.abstractThere have been a great deal of interests in packet mobile radio networks but CSMA/CD protocols used in fixed-terminal radio communication or LAN is not adaptable practically. A centrally-controlled multiple access scheme, known as idle-signal casting multiple access with collison detection (ICMA/CD), was proposed to solve this problem. The performance of ICMA/CD protocols is greatly affected by the packet detection dealy which is generally large tnan that of drdinary LAN or fixed-terminal radio communications. Our improving methods are baaed on a reduction of the large packet detection delay``s and a regulation of traffic load in accordance to channal state histories. Novel channel access scheme (ICMA/CD-R) is introduced to avoid collisions during the packet detection delay and another channel access shceme (VT-ICMA/CD) is adapted for a regulation of traffic load by exploiting the virtual-time protocol concept. Above two channel access algorithms can be used independently for reducing packet failure probability and enhancing the channel capacity. Finally, a combined algorithm (VT-ICMA/CD-R) of above two algorithms is proposed to produce a more improved performance by taking advantage of the merits of ICMA/CDR and VT-ICMA/CD. These algorithms are analyzed in terms of channel capacity, packet failure probability (PFP), average number of reschedulings (ANR), packect dealy and channel stability, compared to existing ICMA/CD protocls. The copmparisons show that proposed algorithms are superior to those of the existing algorithms in above-mentioned performace measures and are less affected by the packet detection delay. The ICMA/CD protocols can be sued for real-time applications such as mobile a lower average rescheduling number, a lower packet delay and a better stability more approximates the first-come-first-service(FCFS) rule. These properities are especially for mobile phone system where voice packets are to be transmitted without being descarded and in the or...eng
dc.languageeng-
dc.publisher한국과학기술원-
dc.titleImproving methods of ICMA/CD protocol in packet mobile radio networks and their performance analysis-
dc.title.alternative이동 패킷통신망에서의 ICMA/CD 프로토콜의 성능개선방법 및 성능분석-
dc.typeThesis(Ph.D)-
dc.identifier.CNRN61694/325007-
dc.description.department한국과학기술원 : 전기 및 전자공학과, -
dc.identifier.uid000855198-
dc.contributor.localauthorKim, Myung-Hwan-
dc.contributor.localauthor김명환-
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EE-Theses_Ph.D.(박사논문)
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