Title :
Dynamic bandwidth allocation algorithm for differentiated sservices over WDM EPONs
Author :
Kae Hsiang Kwong ; Harle, D. ; Andonovic, I.
Author_Institution :
Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow
Abstract :
A variety of passive optical network (PON) systems has been proposed to target the bottleneck problem in the local access. The medium access controls (MACs) of the PON systems are either based on cyclic rotation or polling mechanism. However, these MACs have inherited a potential problem; the cycle time (or polling cycle in the polling MACs) increases linearly as the number of attached ONUs scale up, which can be caused by increasing customer numbers. The longer cycle time means that the ONUs have to wait longer before the next transmission window arrives thus contributing to longer packet delays and poorer QoS. In this paper, a new WDM PON system is proposed where multiple wavelength channels are established in both upstream and downstream directions. The MAC applied is based on an adaptive polling mechanism, and can be used as an upgrade solution for PON systems
Keywords :
DiffServ networks; access protocols; bandwidth allocation; optical fibre networks; quality of service; wavelength division multiplexing; QoS; WDM EPONS; adaptive polling mechanism; cyclic rotation mechanism; differentiated service; dynamic bandwidth allocation algorithm; medium access control; multiple wavelength channel; passive optical network; quality of service; wavelength division multiplexing; Channel allocation; EPON; Heuristic algorithms; Media Access Protocol; Optical fiber devices; Optical fibers; Optical network units; Passive optical networks; Tiles; Wavelength division multiplexing;
Conference_Titel :
Communications Systems, 2004. ICCS 2004. The Ninth International Conference on
Conference_Location :
Singapore, China
Print_ISBN :
0-7803-8549-7
DOI :
10.1109/ICCS.2004.1359350
