| EPON最小空闲时间动态带宽分配算法 |
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| 引用本文： | 于宏海,何荣希,喻华. EPON最小空闲时间动态带宽分配算法[J]. 大连海事大学学报(自然科学版), 2009, 35(3) |
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| 作者姓名： | 于宏海 何荣希 喻华 |
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| 作者单位： | 1. 大连海事大学信息科学技术学院,辽宁大连,116026
2. 辽宁师范大学计算机与信息技术学院,辽宁大连,116029 |
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| 基金项目： | 辽宁省自然科学基金资助项目(20082142); 辽宁省教育厅科技研究项目(2008S02720060483) |
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| 摘 要： | 为解决典型EPON动态带宽分配算法因在每个授权周期中信道上存在空闲时间而导致网络性能降低的问题,提出最小空闲时间带宽分配算法(ITM-1和ITM-2).为部分光网络单元提前分配一个额外的带宽请求时隙,可减小甚至完全消除每个授权周期中出现的空闲时间,提高信道利用率.仿真结果表明:该算法较已有算法可明显改善网络的平均分组传输时延、最大分组时延、平均分组丢失率和吞吐量等性能.
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| 关 键 词： | 以太无源光网络(EPON) 动态带宽分配(DBA) 最小空闲时间 |
Idle-time minimized dynamic bandwidth allocation algorithms for EPON networks |
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| YU Hong-hai , HE Rong-xi , YU Hua. Idle-time minimized dynamic bandwidth allocation algorithms for EPON networks[J]. Journal of Dalian Maritime University, 2009, 35(3) |
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| Authors: | YU Hong-hai HE Rong-xi YU Hua |
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| Affiliation: | YU Hong-hai1,HE Rong-xi1,YU Hua2(1.Information Science , Technology College,Dalian Maritime University,Dalian 116026,China,2.College of Computer , Information Technology,Liaoning Normal University,Dalian 116029,China) |
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| Abstract: | An idle-time minimized dynamic bandwidth allocation(DBA) algorithm(ITM-1) and its extension (ITM-2) were proposed to resolve the lower network performances caused by an idle time in each cycle of traditional DBA algorithms for ethernet passive optical networks(EPON).The algorithms can reduce and even eliminate the idle time by granting a group of ONUs to send report messages in advance,while increasing the channel utilization ratio.Simulation results show that the proposed algorithms achieve a significant p... |
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| Keywords: | ethernet passive optical network(EPON) dynamic bandwidth allocation(DBA) idle-time minimized |
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