Access Nets: Third International Conference on Access by Chonggang Wang

By Chonggang Wang

The once a year foreign convention on entry Networks (AccessNets) goals to supply a discussion board that brings jointly researchers and scientists from academia in addition to guy- ers and engineers from to satisfy and trade principles and up to date paintings on all facets of entry networks. AccessNets 2008 was once the 3rd variation of this occasion, which used to be effectively held in Las Vegas, Nevada, united states, in the course of October 15–17, 2008. The convention consisted of 2 keynote addresses, 5 invited talks, seven technical classes, and panel classes. Leonid Kazovsky from Stanford collage and Kevin Schneider, leader know-how Officer of ADTRAN, brought their intriguing keynote - attire on “Future Evolution of Broadband Access,” and “Carrier Ethernet and the Evo- ing entry Networks,” respectively. Maurice Gagnaire, Martin Reisslein, Martin Maier, Paolo Giacomazzi, and John M. Cioffi gave attention-grabbing invited talks on diversified study themes on entry networks. The technical papers offered unique and primary - seek advances within the region of entry networks, whereas the panels keen on the fascinating issues of “Fiber Assisted instant for Broadband entry Networks and Dynamic Spectrum administration (DSM) Successes. ” those convention complaints comprise all of the technical papers that have been offered at AccessNets 2008. we are hoping that it'll turn into an invaluable reference for researchers and practitioners operating within the quarter of entry networks.

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Read or Download Access Nets: Third International Conference on Access Networks, AccessNets 2008, Las Vegas, NV, USA, October 15-17, 2008. Revised Papers (Lecture ... and Telecommunications Engineering) PDF

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Extra resources for Access Nets: Third International Conference on Access Networks, AccessNets 2008, Las Vegas, NV, USA, October 15-17, 2008. Revised Papers (Lecture ... and Telecommunications Engineering)

Example text

The performance evaluation in [13] includes comparisons of excess bandwidth distribution with some form of IPACT, namely the Single Table extension of IPACT to WDM [14]. Specifically, the Gated allocation of IPACT, where the grant is set equal to the ONU request, without any upper limit, was considered. Gated allocation can lead to unfairness because grant sizes are determined solely as a function of reported queue depth, which is obviously unfair. IPACT with Limited allocation, which we consider in this study, avoids this fairness problem by strictly limiting the size of a granted upstream transmission.

Keywords: EPON, excess bandwidth distribution, IPACT Limited, packet delay. 1 Introduction Excess bandwidth distribution for Ethernet Passive Optical Networks (EPONs) has originally been proposed in [1] as an improvement over the Limited allocation approach of Interleaved Polling with Adaptive Cycle Time (IPACT) [2,3], which we refer to as IPACT-Limited. IPACT-Limited is characterized by a maximum [Bytes], also frequently referred to as minimum guaranteed bandgrant size Gmax i width, for each Optical Network Unit (ONU) i, i = 1, .

Excess bandwidth distribution techniques have recently been proposed to improve the dynamic bandwidth allocation in EPONs. We compare existing offline excess bandwidth distribution with conventional IPACT Limited in terms of packet delay performance. We identify the factors that result in packet delay reduction with excess bandwidth distribution compared to IPACT-Limited and discover that existing offline excess distribution mechanisms become unstable at moderate to high loads in long-range EPONs with large round trip propagation delays.

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