Record Details

Extending Light-Trails to Regional Networks: Multi-hop Light-Trails (MLT)-System Design and Performance

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Extending Light-Trails to Regional Networks: Multi-hop Light-Trails (MLT)-System Design and Performance
 
Creator GUMASTE, A
DAS, T
VAISHAMPAYAN, R
WANG, JP
SOMANI, A
 
Subject End-to-end delay
Light-trails
Metro optical networks
Multicast traffic
METRO OPTICAL NETWORKS
 
Description A light-trail is a generalization of a lightpath allowing multiple nodes to be able to communicate along the path, leading to all-optical spatial traffic grooming. A light-trail exhibits properties of dynamic bandwidth provisioning, optical multicasting and sub-wavelength grooming, and architecturally is analogous to a shared wavelength optical bus. Arbitration within the bus is conducted by an out-of-band control channel. The bus feature results in a node that has a large pass-through loss, restricting the size of a light-trail to metro environments. Due to this limitation, it is difficult to extend the light-trail concept to regional or core networks. In this paper we exhaustively investigate the concept of multi-hop light-trails (MLTs)-a method to provide multi-hop communication in light-trails, thus enhancing their reach. Node architecture and protocol requirements for creating MLTs are discussed. We then discuss design issues for MLTs in regional area networks through a problem formulation that is solved using convex optimization. The problem formulation takes into consideration issues such as routing MLTs as well as assigning connections (defined as sub-wavelength traffic requests) to MLTs. Two polynomial-time heuristic algorithms for creation of MLTs are presented. One of the algorithms is a static implementation, while the other is a dynamic implementation-with unknown traffic. A detailed delay analysis is also presented that enables computation of end-to-end delay over MLTs using different flow assignment algorithms. A simulation study validates the MLT concept.
 
Publisher OPTICAL SOC AMER
 
Date 2014-10-16T13:17:55Z
2014-10-16T13:17:55Z
2012
 
Type Article
 
Identifier JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING, 4(12)1046-1061
http://dx.doi.org/10.1364/JOCN.4.001046
http://dspace.library.iitb.ac.in/jspui/handle/100/15645
 
Language en