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http://dx.doi.org/10.3745/KIPSTC.2009.16-C.4.477

IPS-based Dynamic Bandwidth Allocation Algorithm with Adaptive Maximum Transmission Window to Increase Channel Utilization in EPON  

Cho, Seung-Moo (삼성전자 DMC부문 무선사업부)
Oh, Chang-Yeong (성균관대학교 정보통신공학부)
Chung, Min-Young (성균관대학교 정보통신공학부)
Choo, Hyun-Seung (성균관대학교 정보통신공학부)
Lee, Tae-Jin (성균관대학교 정보통신공학부)
Publication Information
The KIPS Transactions:PartC / v.16C, no.4, 2009 , pp. 477-486 More about this Journal
Abstract
This paper proposes a dynamic bandwidth allocation (DBA) algorithm with adaptive maximum transmission window (DBA-AMTW) to increase channel utilization in Ethernet passive optical networks (EPONs). A polling mechanism in EPON determines channel utilization and puts constraints on DBA algorithm and scheduling. DBA algorithms based on interleaved polling with stop (IPS) allocate transmission windows to optical network units (ONU) considering requests of all ONUs. However channel idle time when any ONU does not transmit packets decreases channel utilization. Proposed DBA-AMTW improves efficiency of a network and allocates transmission windows effectively by appropriate DBA computation from REPORT messages of all ONUs. An adaptive maximum transmission window for each ONU determined by a DBA computation in the previous scheduling cycle. Simulation results show that the proposed DBA algorithm improves performance of throughput and average delay time.
Keywords
EPON; Dynamic Bandwidth Allocation; Interleaved Polling with Stop;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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