簇架构混合光交换网络竞争控制及多重公平问题研究

项目名称： 簇架构混合光交换网络竞争控制及多重公平问题研究

项目编号： No.61302075

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 杨九如

作者单位： 黑龙江大学

项目金额： 27万元

中文摘要： 混合光交换允许数据分组采用多交换粒度级、多种信道预约方式并行传输。鉴于其复杂性，竞争控制依旧是混合光交换研究中的焦点问题。而随着网络流量激增，分组丢弃所引发的延迟与能耗等诸多问题亦愈发受到重视。然而，由于缺乏有效的量化分析与评价模型，用户间的公平性问题日益凸显。本申请针对上述问题，拟以ChinaNet/CN2 网络为研究对象，围绕分组的"丢弃成本"，以基于簇架构的虚拓扑方式优化混合光交换网络的路由选择与信道预约机制，主动减少分组间的信道碰撞几率；拟联合考虑分组的传输延迟与能耗成本，探索基于延迟与抢占机制的竞争解决策略，进一步降低分组丢弃几率；拟建立"多重公平指数"模型，综合评价混合光交换网络在丢弃、传输延迟与能耗三方面的性能，以增强相关解决方案的合理性与可行性。项目研究结果将有效弥补以往研究中性能验证方面的不足，对于混合光交换网络的运行机制研究具有一定学术价值。

中文关键词： 光交换；多粒度；簇架构；公平；竞争解决

英文摘要： On account of the complexities of multi-granular and multi-reservation,contetion control is always one of the hot topics in the research of hybrid optical switching(HOS).Meanwhile,as the astonishing rise in traffic,more attention has been paid to the problems on delay and energy consumption resulted from data loss.In addition, due to the lack of the quantifying and evaluating methods, the fairness problems of users are strongly concerned.To alleviate such problems above,in our project,first of all,selecting the ChinaNet/CN2 network as researching object,centering the loss-cost of data packtes,the routing and channel reservation mechanism will be optimized by introducing the clustered architecture, which can proactively decrease the probability of channel collision.Secondly,with a joint consideration on delay and energy consumption,the schmems based buffer and preemption for contention resolution will be investigated to further reduce the packet loss possibility.Thirdly,aim to enhance the rationality and practicability of the proposed schemes,a novel assessing model called multi-fairness index (MFI) will be estabilished to perform the comprehensive evaluations for HOS in terms of loss, transmission delay and energy consumption. It is believed that, the researching results have a certain academic importance t

英文关键词： Optical switching；multi-granularity；clusterer architecture；fairness；contention resolution