Optical regional access network (ORAN) project

Abstract

REPORT DOCUMENTATION PAGE Form Approved OMB No. 074-0188 Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to This final technical report presents the results and conclusions from a set of research objectives posed by the Helios project. The objectives included: The study of all-optical LAN architectures and protocols; the establishment of a testbed for the purpose of demonstrating high-bandwidth applications and collecting and analyzing statistical profiles of their traffic; and the study of propagation of analog signals through all-optical networks. The report is structured as follows: Sections 2, 3 and 4 describe MCNC-RDI's work on the HiPeR-1 protocol and scheduler for broadcast WDM LAN architectures. Section 5 describes the application testbed established between MCNC-RDI, NCSU and UNC-CH using NCNI infrastructure for the purpose of accumulating statistical information about traffic demands of high-bandwidth applications. Section 6 describes the application cluster established within MCNC-RDI in order to test high-bandwidth/high-compute demand applications. Section 7 describes the research performed at Lucent Bell Labs concerned with transporting analog signals over DWDM optical links including physical layer impairments and adaptation layer studies. Section 8 describes the work performed jointly by UNC-CH and the University of Pennsylvania to establish a multimedia network testbed for telepresence applications. The Appendices present some of the technical details related to the HiPeR-1 scheduling protocol developed and implemented by MCNC-RDI.

Dynamic Wavelength Allocation in IP/WDM Metro Access Networks

“…Assume that a wavelength is switched from node i to node j since (f i , f j ) ∈ R 1,3 . However, during the reconfiguration period, the state moves into R 22 and at the end of the reconfiguration period the final state turns out to be (8,12) for which the original wavelength allocation (2,2) is indeed more efficient. As a result, the action a ij increases the NSFS cost in addition to the incurred capacity loss.…”

“…In this thesis, a wavelength routed IP/WDM ring network ( [8,9,10,11]) is considered. This architecture is most suitable for metro access networks with hubbed traffic patterns, where the local traffic between access nodes is negligible.…”

<title>Two modules for building OADM and OXC in metro networks</title>

“…The metro optical network refers to the WDM high-end access and aggregate network [1][2][3] , which serves one city normally. One typical metro WDM network is shown in figure 1.…”

Architectural principles of optical regional and metropolitan access networks

“…1 as a representative example. This architecture is a modified version of the architecture developed in the ORAN project [1].…”

“…Several research projects have specifically addressed WDM regional or metropolitan access. A recent relevant architectural study was the Optical Regional Access Network (ORAN) project [1] (an offshoot of the DARPA-sponsored Multiwavelength Optical Networking (MONET) Consortium [2]), which qualitatively investigated some of the issues involved with delivering WDM to high-end customer premises. Several metropolitan area testbeds have been built, including: All-Optical Network (AON) [3], [4], Rainbow [5], [6], Optical Networks Technology Consortium (ONTC) [7], Lightwave Exchangeable Add/Drop Ring Network (LEARN) [ [9], and PROMETEO [10].…”