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標題: 上行頻寬分配保證服務演算法研究於光纖同軸混成網路之DOCSIS標準
The study of upstream bandwidth allocation algorithm with QoS guarantee in the DOCSIS standard over HFC networks
作者: 詹志嘉
Chan, Chih-Chia
關鍵字: 光纖同軸混成網路
出版社: 資訊科學系所
引用: 參考文獻 [1]MCNS Working Group, “Data-Over-Cable Service Interface Specification: Radio Frequency Interface Specification,”SP-RFIv1.1-107-108291, Aug. 2001. [2]Y.D. Lin, W.M. Yin and C.Y. Huang, “An Investigation into HFC MAC Protocol: Mechanisms, Implementation, and Research Issues,” IEEE Communication Surveys, pp. 2-13 ,Third Quarter (2000). [3]XJ Xiao. Winston K.G. Seah, Y.H. Chew, C.C. Ko, “Upstream resource reservation and scheduling strategies for hybrid fiber/coaxial networks” APCC/OECC ''99. Fifth Asia-Pacific Conference on Communications and Fourth Optoelectronics and Communications Conference, Vol. 2, pp. 1163-1169 (1999). [4]Princy Mehta and Sanjay Udani, “ Voice over IP,” IEEE Potentials, Vol. 20, Issue 4, pp. 36-40, Nov. 2001. [5]W. M. Yin and Y.D Lin, “Statistically Optimized Minislot Allocation for Initial and Collision Resolution in Hybrid Fiber Coaxial Networks,” IEEE Journal on Selected Areas in Communications, vol. 18, no. 9, pp. 1764-1773 (2000). [6]P. Murrin, D.M. Howard, A.M. Tyrrell and P. Barrett, “Objective Measure of Performance of Voice Activity Detectors,” Electronics Letters, Volume 35 Issue 22, pp. 1922 -1923 (1999). [7]Z. Li, E.C. Tan, I. McLoughlin and T.T. Teo, “Proposal of standards for intelligibility tests of Chinese speech,” Proc. Inst. Elect. Eng.–Vis. Image and Signal Processing, Volume 147 Issue 3, pp. 254 -260 (2000). [8]Next Gen Datacom, Inc., [9]One-way transmission time, ITU-T Recommenda-tion G.114, 1996. [10]B. Goodman, “Internet telephony and modem delay,” IEEE Network, Volume 13, Issue 3, pp. 8 –16 (1999). [11] 詹前烽,「在HFC網路以最大平均延遲優先提供VoIP服務的排程演算法」,國立台灣科技大學電機工程系碩士學位論文,2002 年。 [12] 許舜雯,「在HFC網路以Clip和連續傳送次數為基礎提供VoIP服務的排程演算法分析」,國立台灣科技大學電機工程系碩士學位論文,2002 年。 [13]M. Hassan, A. Nayandoro, M. Atiquzzaman, “Internet Telephony: Services, Technical Challenges, and Products,” IEEE Communications Magazine, Vol. 38, No. 4, pp. 96-103, Apr. 2000. [14]R. Salami, C. Laflamme, B. Bessette, J-P Adoul, “ITU-T G.729 Annex A: Reduced Complexity 8kb/s CS-ACELP Codec for Digital Simultaneous Voice and Data” IEEE Communications Magazine, Vol. 35, No. 9, pp.56-63, Sept. 1997. [15]S. Nanda, D. J. Goodman and U. Timor, “Performance of PRMA: A Packet Voice Protocol for Cellular System,” IEEE Trans. Veh. Technol., vol. 40, no. 3, pp. 584-498 (1991).
摘要: 網路電話(VoIP)對資訊科技及通訊技術,將是另一個重要的課題。現今許多科技公司已部署網路電話以降低成本。如何提供良好的通話品質,仍是最主要的障礙,尤其在上行頻寬擁擠的HFC(Hybrid Fiber/Coax)網路上。透過服務品質保證(Quality of service,QoS)將可解決此一問題。 在此篇論文,我們首先介紹現今HFC網路的上行頻寬分配問題,針對上行頻寬保證服務,我們提出UBAS (The upstream bandwidth allocation scheduler) 機制,最後經由模擬驗證,使用此機制可有效降低傳輸延遲,並提昇語音通話品質。
Voice over IP (VoIP) is one of the most important topics on the information and communication technologies. Many companies have deployed to VoIP for cost saving. Providing good voice quality of communication is the first priority issue especially in hybrid fiber/coax (HFC) network. Quality of Service (QoS) guarantee in such an environment. In this thesis, we first introduce the issues of upstream bandwidth allocation in the current HFC network. We propose a UBAS (The upstream bandwidth allocation scheduler) scheme to deal with upstream bandwidth allocation with QoS guarantee. Finally, through simulations, we prove that using UBAS scheme can lower transmission delay and effectively improve the quality of VoIP.
其他識別: U0005-1906200614520500
Appears in Collections:資訊科學與工程學系所



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