Implement mechanism on distributed EPON DBA based on utility

Document Type

Article

Publication Date

7-1-2008

Abstract

EPON (Ethernet-based passive optical network) is optical-fiber-based access technology and is becoming a primary one for the next generation access network. But the Polling mechanism of IEEE802.3ah EPON has low bandwidth efficiency, and many available bandwidths are wasted through UWR (unused window remainder), USR (unused slot remainder), UQR (unused queue remainder), and UPR (unused package remainder) produced by its DBA algorithm. IPACT EPON presents a new Polling mechanism with high bandwidth efficiency, but its DBA (dynamic bandwidth allocation) algorithm has same disadvantages as IEEE 802.3ah. Based on IPACT (interleaved polling with adaptive cycle time), this paper presents an implement mechanism on distributed EPON utility DBA, it can provide user service different treatment according to his SLA (service level agreement). By a concentrated and a distributed recursive utility algorithms, it effectively diminishes UWR-reproduced and UQR. By a distributed UPR diminishing mechanism, it reduces UPR. By putting forward a USR diminish mechanism based on interleaved baton, it increases the success probability of diminishing USR, and by adding the USR of baton-sender to the grant of his baton-receiver, it improves the bandwidth efficiency. The simulation result verifies it merits well.

Identifier

48549095526 (Scopus)

Publication Title

Ruan Jian Xue Bao Journal of Software

External Full Text Location

https://doi.org/10.3724/SP.J.1001.2008.01693

ISSN

10009825

First Page

1693

Last Page

1706

Issue

7

Volume

19

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