OBS中的一种原波长优先批调度算法  

An original wavelength first batch scheduling algorithm for OBS networks

作　　者：黄胜[1] 庞洪丰[1] 李玲霞[1] 孙丽琴[1] 王雄[1] 

机构地区：[1]重庆邮电大学重庆市光纤通信技术重点实验室,重庆400065

出　　处：《光通信技术》2011年第11期15-17,共3页Optical Communication Technology

基　　金：国家自然科学基金项目(61071117;60972069)资助;国家863项目(2009AA01Z215)资助;教育部新世纪优秀人才计划(NCET-09-0268)资助;四川省青年基金(09ZQ026-032);重庆市科委项目(2009BB2285;2008BB2414;2010BB2413;2010BB2409;2010BB2413)资助;重庆市教委项目(KJ080513;KJ080522;KJ110519;KJ110527)资助;重庆邮电大学博士启动基金(A2007-46;A2007-60;A2009-07)资助

摘　　要：光突发交换网络(OBS)中心节点使用波长转换器减少突发丢失率,但波长转换器价格昂贵且技术不成熟,中心节点需要减少波长转换器的使用数目。大部分数据信道调度算法都没有考虑波长转换器数目。为此,提出一种原波长优先批调度算法基于相同波长转换器数目下进一步减少突发丢失率。仿真结果表明,这种批调度算法在波长转换器不足条件下,与其它算法相比更能减少突发丢失率。In optical burst switching networks, wavelength converters （WCs） of core nodes are used to decrease the burst loss rate. The implementation of the WCs is difficult in the current technology and the cost of WCs is high. So some core nodes may be configured insufficient WCs to reduce the cost in OBS networks. However, many data channel scheduling algorithms do not count the number of WCs and the performance of burst loss rate is not good in the condition of insufficient WCs. To overcome the defect, original wavelength first batch scheduling algorithm with insufficiency of WC is proposed in this paper. The algorithm can reduce more burst loss rate with the same number of WCs, compared with the other scheduling algorithms. The simulation resuits show that the algorithm is more effective in reducing the burst loss rate with insufficient WCs.

关 键 词：光突发交换网络 波长转换器 数据信道调度算法 批调度算法 

分 类 号：TN929.11[电子电信—通信与信息系统]