Demonstration of QoS-Aware Video Streaming over a Metro-Scale Optical Network Using a Cross-Layer Architectural Design

Wang, Michael S.; Wang, Anjing; Bathula, Balagangadhar G.; Lai, Caroline P.; Baldin, Ilya; Chen, Cathy; Majumder, Debjyoti; Gurkan, Deniz; Rouskas, George N.; Dutta, Rudra; Bergman, Keren

doi:10.1364/nfoec.2011.nthc4

Cited by 2 publications

(1 citation statement)

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“…Also in this case, the context refers to WSONs operating at 10 Gb/s with OOK transmissions. In [16] a QoS-aware video streaming test based on optical power fluctuation monitoring was presented. With focus on higher and multi-bit-rate scenarios, in [17], a significant experiment was carried out for WSONs considering the dynamic setup of three kinds of optical signals: 43 Gb/s return-to-zero DQPSK, 10 Gb/s optical transport unit 2 (OTU-2) and continuous wave signals.…”

Section: Previous Workmentioning

confidence: 99%

Experimental Demonstration of Impairment-Aware PCE for Multi-Bit-Rate WSONs

Paolucci¹,

Sambo

Cugini

et al. 2011

J. Opt. Commun. Netw.

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In emerging multi-bit-rate wavelength switched optical networks (WSONs), the coexistence of lightpaths operating at different bit-rates and modulation formats (e.g., based on amplitude and phase modulation) induces relevant traffic dependent detrimental effects that need to be considered during impairment-aware routing and wavelength assignment (IA-RWA). The considerable complexity of IA-RWA computation has driven the Internet Engineering Task Force (IETF) to propose specific path computation element (PCE) architectures in support of IA-RWA for WSONs. In this paper, following the IETF indications, we expand two PCE architectures and experimentally evaluate five different PCE architectural solutions, performing either combined or separated impairment estimation and RWA, with on-line and off-line computation of impairment validated paths, and with the possible utilization of a novel PCE Protocol (PCEP) extension. Results in terms of traffic engineering performance, path computation delivery time and amount of exchanged PCEP messages are reported and discussed to highlight the benefits and application scenarios of the considered PCE architectures.

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Section: Previous Workmentioning

confidence: 99%