Quality of service in IP over WDM: considering both service differentiation and transmission quality

• Published in: 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577) Vol. 3; pp. 1836 - 1840 Vol.3
• Main Authors: Salvadori, E., Battiti, R.
• Format: Conference Proceeding
• Language: English
• Published: Piscataway, New Jersey IEEE 2004
• Subjects: Applied sciences; Conferences; Delay; Exact sciences and technology; Information, signal and communications theory; IP networks; Multiplexing; Next generation networking; Operation, maintenance, reliability; Optical fiber networks; Quality of service; Routing; Signal and communications theory; Systems, networks and services of telecommunications; Telecommunication traffic; Telecommunications; Telecommunications and information theory; Tellurium; Transmission and modulation (techniques and equipments); Wavelength division multiplexing; WDM networks; Packet switching; Optimal algorithm; Optical telecommunication; Data transmission; Teletraffic; Wavelength division multiplexing; Routing; Translation motion; Optical fiber network; Simulation; Traffic management; Telecommunication network; Optical fiber communication; Service differentiation; Delay time; Transmission loss; Service quality
• ISBN: 0780385330; 9780780385337
• DOI: 10.1109/ICC.2004.1312825

IP over WDM networks are a promising candidate for the next generation optical Internet networks. A new traffic-engineering (TE) scheme is proposed in this paper with the objective to route subwavelength connection requests with QoS constraints. In particular, we consider the routing of high-priority connections characterized by stringent requirements in term of delay and packet-loss ratio, by translating them into constraints at the physical layer. Furthermore, in order to provide efficient service differentiation, the impact of a suboptimal preemption algorithm is analyzed through extensive simulation experiments considering both the blocking probability and the network disruption, while comparing it with an optimal mechanism proposed in literature.