Multipoint Control Protocol With Look-Ahead for Wavelength Division Multiplexed Ethernet Passive Optical Network

Xiaomin Liu, George N. Rouskas, Feng He, Huagang Xiong
2014 Journal of Optical Communications and Networking  
We present a simple yet effective enhancement to the operation of the Ethernet passive optical network (EPON) multipoint control protocol (MPCP) for wavelength division multiplexing (WDM) EPON. The enhancement, inspired by our earlier work in a related but different context, allows the optical line terminal (OLT) to perform look-ahead scheduling on each of the upstream channels. The look-ahead operation is fully compatible with the existing standard and may be implemented via software updates
more » ... the OLT without affecting the operation of optical network units in EPON. The look-ahead enhanced MPCP achieves significant performance gains across a wide range of traffic loads and opens up new opportunities for the design of sophisticated dynamic bandwidth algorithms to support advanced quality of service capabilities. Index Terms-Look-ahead operation; Multipoint control protocol; Passive optical network. In this paper, we present a simple yet effective enhancement to the operation of MPCP that results in a significant decrease, up to 70%, of packet delay across the whole range of traffic loads in WDM EPON systems. The enhancement, inspired by our earlier work in a related but different context [5], consists of a look-ahead operation that is managed by the OLT and allows the latter to coordinate access to the http://dx.
doi:10.1364/jocn.6.000104 fatcat:dibh37oyyndinawpg247mnign4