Open AccessEnhanced Dynamic Bandwidth Allocation Algorithm in Ethernet Passive Optical Networks
Author(s) -
Park Byungjoo,
Hwang Ankyu,
Yoo Jae Hyoung
Publication year - 2008
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.08.1107.0004
Subject(s) - optical line termination , dynamic bandwidth allocation , computer network , computer science , passive optical network , bandwidth allocation , access network , broadband , fairness measure , bandwidth (computing) , 10g pon , algorithm , wavelength division multiplexing , telecommunications , throughput , wavelength , physics , optoelectronics , wireless
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.