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研究生:林忠玄
研究生(外文):Zhong-Xuan Lin
論文名稱:乙太被動光纖網路之分類式頻寬配置演算法之研究
論文名稱(外文):A Study of Class-Based Bandwidth Allocation Algorithms In Ethernet Passive Optical Networks
指導教授:吳介騫
指導教授(外文):Jieh-Chian Wu
學位類別:碩士
校院名稱:國立高雄第一科技大學
系所名稱:電腦與通訊工程所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2007
畢業學年度:95
語文別:中文
論文頁數:79
中文關鍵詞:乙太被動光纖網路光纖
外文關鍵詞:EPONEthernet Passive Optical Network
相關次數:
  • 被引用被引用:0
  • 點閱點閱:160
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  • 收藏至我的研究室書目清單書目收藏:0
摘 要
乙太被動光纖網路,具低成本及高頻寬的特性,是解決寬頻接取網路瓶頸的最佳方案之一。其主要特性是末端使用者間共享上行頻寬,並要求有效率的媒體接取控制,使容易統計多工於不同型態訊務,提供不同類型服務的需求。
Shengming Jiang and Yuming Jiang ( 2004 ) 提出一個以類別為基底的動態頻寬配置方案使用在乙太被動光纖接取網路上 (A Class-Based Dynamic Bandwidth Allocation Scheme For EPONS ),此演算法提供乙太被動光纖網路一個動態優先權方案(Dynamic weight priority scheduling,DWPS)來配置上行頻寬之訊務量以加強服務品質,其頻寬配置的機制不僅僅是保證所有的使用者公平的分享整個上行頻寬,也提供不同的訊務服務,防止單一類別訊務在重訊務的狀態時獨佔整個上行頻寬。
本論文針對上行頻寬配置,我們提出新的類別基底頻寬配置演算法是以末端使用者的頻寬需求為基礎來動態調整頻寬配置的方式,即時修正訊務,以達到高品質服務的特性。
經模擬結果驗證,我們的演算法其平均訊框延遲、訊框遺失機率等均優於現存其他演算法。
Abstract
Ethernet passive optical networks, low-cost and high-speed, are one of the best solutions to the bottleneck problem of the broadband access network. A major characteristic of EPON is the shared upstream channel among end users, mandating efficient medium access control to facilitate statistical multiplexing and provision multiple services for different types of traffic.
Shengming Jiang and Yuming Jiang ( 2004 ) presented A Class-Based Bandwidth Allocation Scheme For EPONs . It allow EPON to use a dynamic weight priority scheduling(DWPS) for allocation upstream channel traffic and Strengthen the quality of services. It not only guarantees all ONUs fairly share the bandwidth of upstream on demand, but also supports differentiated services. To prevent one service class from monopolizing the bandwidth under heavy load.
In this study, we propose a new Class-Based Dynamic Bandwidth Allocation algorithm. It use the end user''s bandwidth demand to dynamic adjust bandwidth allocation. Revise the traffic immediately, in order to reach the characteristic of the high-quality service.
The simulation results show that our algorithm enhances QoS metrics such as average frame delay , and frame loss probability over other existing algorithms.
目 錄
中文摘要------------------------------------------------------------------------------------------I
英文摘要-----------------------------------------------------------------------------------------II
誌謝----------------------------------------------------------------------------------------------IV
目錄---------------------------------------------------------------------------------------------V
表目錄-----------------------------------------------------------------------------------------VIII
圖目錄-------------------------------------------------------------------------------------------IX
符號說明----------------------------------------------------------------------------------------XI
一、 緒論-----------------------------------------------------------------------------------------1
1.1 前言------------------------------------------------------------------------------------1
1.1.1 乙太被動光纖網路的發展現狀-------------------------------------------3
1.2 文獻------------------------------------------------------------------------------------4
1.2.1 乙太被動光纖網路結構----------------------------------------------------4
1.2.2乙太被動式光纖網路架構及組態介紹-----------------------------------5
1.2.3 乙太被動式光纖網路中的關鍵技術-------------------------------------7
1.2.3.1系統同步-------------------------------------------------------------7
1.2.3.2 ONU的自動識別----------------------------------------------------7
1.2.4內嵌 MPCP 與 OSI 七層協定關係圖介紹-----------------------------9
1.2.5 乙太被動式光纖網路之 REPORT / GATE 訊框格式介紹---------10
1.2.6 OLT 與 ONU 之 DISCOVERY Handshake 程序介紹-------------11
1.2.7 EPON 系統 RTT( Round Trip Time ) 量測機制介紹---------------13
1.3 研究動機-----------------------------------------------------------------------------14
1.4 章節架構-----------------------------------------------------------------------------16
二、乙太被動光纖網路系統頻寬分配演算法---------------------------------------------17
2.1 FBA ( Fixed Bandwidth allocation ) ----------------------------------------------17
2.1.1 FBA 流程說明------------------------------------------------------------17
2.1.2 FBA 頻寬配置--------------------------------------------------------------18
2.2 IPACT(Interleaved Polling with Adaptive Cycle Time) -----------------------20
2.2.1 IPACT 流程圖----------------------- ----------------------- ---------------20
2.2.2 IPACT 的運作機制----------------------- ----------------------- ---------22
2.3 LBA ( Limited Bandwidth allocation ) ------------------------------------------28
2.3.1 LBA 流程說明--------------------------------------------------------------28
2.3.2 LBA 頻寬配置-------------------------------------------------------------30
2.4 EBR ( Excessive Bandwidth Reallocation ) -------------------------------------32
2.4.1 流程說明---------------------------------------------------------------------32
2.4.2 EBR 頻寬配置--------------------------------------------------------------34
2.5 Class-Based Bandwidth Allocation (D1) -----------------------------------------36
2.6 Class-Based Bandwidth Allocation ( D2 ) ---------------------------------------38
2.7 類別基底動態頻寬配置演算法演算法-----------------------------------------40
2.7.1 類別基底動態頻寬配置演算法演算法介紹---------------------------40
2.7.2 類別基底動態頻寬配置演算法參數說明------------------------------42
2.7.3 類別基底動態頻寬配置演算法範例----------------------------------- 44
三、新類別基底動態頻寬配置演算法--------------------------------------------------- 46
3.1 新類別基底動態頻寬配演算法介紹------------------------------------------- 46
3.2 新類別基底動態頻寬配演算法參數說明--------------------------------------48
3.3 新類別基底動態頻寬配演算法範例--------------------------------------------50
3.4 新類別基底動態頻寬配演算法模擬假設--------------------------------------52
3.5 新類別基底動態頻寬配演算法模擬結果--------------------------------------53
四、效能評估------------------------------------------------------------------------------------54
4.1 平均訊框延遲 ( Average frame delay(s) ) 比較-------------------------------54
4.2 訊框遺失機率(Frame loss probability) 比較----------------------------------56
4.3 吞吐量(Throught(Mbit/s) ) ------------------------------------------------------- 58
4.3.1 EF Throught------------------------------------------------------------------58
4.3.2 AF Throught------------------------------------------------------------------59
4.3.3 BE Throught------------------------------------------------------------------60
五、結論及未來研究工作------------------------------------------------------------------- 61
5.1 結論---------------------------------------------------------------------------------- 61
5.2未來研究工作----------------------------------------------------------------------- 62
參考文獻---------------------------------------------------------------------------------- 63
參考文獻
[1] ITU Telecommunication Standardization Sector (ITU-T) http://www.itu.int/ITU
[2] IEEE 802.3ah task force, http:// www.ieee802.org/3/efm
[3] 財團法人工業技術學院光電工業研究所http://itriex1.itri.org.tw/itriap/broad.nsf/
[4] Yuanqiu Luo and Nirwan Ansari, “Bandwidth allocation for multiservice access on EPONs,” IEEE optical Communications, Feb. 2005.
[5] Shengming Jiang; Yuming Jiang “A class-based dynamic bandwidth allocation scheme for EPONs” Communications Systems, 2004. ICCS 2004. The Ninth International Conference on 6-8 Sept. 2004 Page(s):356 - 360
[6] G. Kramer and G. Pesavento, “Ethernet Passive Optical Network (EPON): Building a Next-Generation Optical Access Network,” IEEE Commune. Mag., vol. 40, no. 2, Feb. 2002, pp. 66–73
[7] G. Kramer and B. Mukherjee, “Interleaved Polling with Adaptive Cycle Time (IPACT): Protocol Design and Performance Analysis,” Tech. rep. CSE-2001-4, Dept. of Comp. Sci., UC Davis, Aug. 2001.
[8] Glen Kramer, Biswanath Mukherjee, Gerry Pesavento, “Ethernet PON (EPON): Design and Analysis of an Optical Access Network” Photonic Network Communications, 3:3, 307-319, 2001.
[9] C. Assi et al., “Dynamic bandwidth allocation for quality of service over Ethernet PON,” IEEE J. Select. Areas Commun, Nov. 2003.
[10] N. Ghani et al., “Quality of service in Ethernet passive optical networks,” in IEEE Sarnoff Symp., Princeton, NJ, Apr. 2004.
[11] C. M. Assi et al., “Dynamic Bandwidth Allocation for Quality-of-Service over Ethernet PONs,” IEEE JSAC, vol. 21, no. 9, Nov. 2003, pp. 1467–77.
[12] S. Choi and J. Huh, “Dynamic Bandwidth Allocation Algorithm for Multimedia Services over Ethernet PONs,” ETRI J., vol. 24, no. 6, Dec. 2002, pp. 465–68.
[13] Howard Frazier, Gerry Pesavento, “Ethernet Takes on the First Mile”, pp.17-21 IT-Pro, Jul. 2001.
[14] Ji-Yang, Cheng Sheng, “EPON Upstream Multiple Access Scheme” Info-tech and Info-net, 2001. Proceedings. ICII 2001 - Beijing. 2001 International Conferences on, Volume: 2, 2001
[15] Vincent Bemmel, Alloptic, “MPCP and TDM Services,” IEEE 802.3ah EFM Task Force Meeting, Mar. 2002.
[16] Su-il Choi and Jae-doo Huh, “Dynamic Bandwidth Allocation for Multimedia Services over Ethernet PONs,” ETRI J., vol. 24, no. 6, Dec. 2002, pp. 465-468.
[17] Chang-Joon Chae, Elaine Wong, and Rodney S. Tucker, “Optical CSMA/CD Media Access Scheme for Ethernet over Passive Optical Network”, IEEE Photonics Technology Letters, Vol. 14, No. 5, May 2002, pp.711-713
[18] Tsung-pin Chiu, “A Study of Dynamic Bandwidth Allocation Algorithms in
Ethernet Passive Optical Networks“
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