| Autor: |
Min Young Chung, Hyunseung Choo, Seung-Moo Cho, Chang-Yeong Oh, Tae-Jin Lee |
| Rok vydání: |
2009 |
| Předmět: |
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| Zdroj: |
The KIPS Transactions:PartC. :477-486 |
| ISSN: |
1598-2858 |
| DOI: |
10.3745/kipstc.2009.16-c.4.477 |
| Popis: |
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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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