Enhanced Dynamic Bandwidth Allocation Algorithm in Ethernet Passive Optical Networks

ETRI Journal

关键词: fairness;    bandwidth allocation;    Ethernet passive optical network;   

Others  :  1185704
DOI  :  10.4218/etrij.08.1107.0004

【 摘 要 】

As broadband access is evolving from digital subscriber lines to optical access networks, Ethernet passive optical networks (EPONs) are considered a promising solution for next generation broadband access. The point-to-multipoint topology of EPONs requires a time-division multiple access MAC protocol for upstream transmission. In this paper, we propose a new enhanced dynamic bandwidth allocation algorithm with fairness called EFDBA for multiple services over EPONs. The proposed algorithm is composed of a fairness counter controller and a fairness system buffer in the optical line terminal. The EFDBA algorithm with fairness can provide increased capability and efficient resource allocation in an EPON system. In the proposed EFDBA algorithm, the optical line termination allocates bandwidth to the optical network units in proportion to the fairness weighting counter number associated with their class and queue length. The proposed algorithm provides efficient resource utilization by reducing the unused remaining bandwidth made by idle state optical network units.

   

【 参考文献 】

• [1]B. Lund, "PON Architecture ‘Futureproofs
• [2]Y.K. Lee and D.M. Lee, "Broadband Access in Korea: Experience and Future Perspective,"IEEE Communications Magazine, vol. 41, no. 12, Dec. 2003, pp. 30-36.
• [3]H. Frazier and G. Pesavento, "Ethernet Takes on the First Mile,"IT-Pro, July 2001, pp. 17-21.
• [4]IEEE Draft P802.3ah/D1.414, "Media Access Control Parameters, Physical Layers and Management Parameters for Subscriber Access Networks,"Mar. 2003.
• [5]G. Kramer, B. Mukherjee, and G. Pesavento, "IPACT: A Dynamic Protocol for an Ethernet PON (EPON),"IEEE Commun. Mag., Feb. 2002, pp. 74-80.
• [6]G. Kramer, B. Mukherjee, and G. Pesavento, "Ethernet PON (ePON): Design and Analysis of an Optical Access Network,"Photonic Network Commun., vol. 3, no. 3, July 2001, pp. 307-319.
• [7]IEEE 802.3ah draft at http://www.ieee802.org/3/efm/.
• [8]J. Zheng and S. Zheng, "Dynamic Bandwidth Allocation with High Efficiency for EPONs,"IEEE International Conference on Communications, May 2006, pp. 2699-2703.
• [9]H.S. Lee, T.W. Yoo, J.H. Moon, and H.H Lee, "A Two Step Scheduling Algorithm to Support Dual Bandwidth Allocation Policies in an Ethernet Passive Optical Network,"ETRI Journal, vol. 26, no. 2, Apr. 2004, pp. 185-188.
• [10]K.H. Son, H.K. Ryu, S. Chong, and T.W. Yoo, "Dynamic Bandwidth Allocation Schemes to Improve Utilization under Non-uniform Traffic in Ethernet Passive Optical Networks,"Proc. IEEE International Conference on Communications, June 2004, vol. 3, pp. 1766-177
• [11]Y.M. Yang, S.W. Lee, HW. Jung, K. Kim, and B.H. Ahn, "Inter ONU Bandwidth Scheduling by Using Threshold Reporting and Adaptive Polling for QoS in EPONs,"ETRI Journal, vol. 27, no. 6, Dec. 2005, pp. 802-805.
• [12]H.S. Kim, H.C. Park, D.K. Kang, and C. Kim, "Sliding Cycle Time-Based MAC Protocol for Service Level Agreeable Ethernet Passive Optical Networks,"IEEE International Conference on Communications, May 2005, vol. 3, pp. 1848-1852.