首页> 外文学位 >Optimization-based flow control in multipoint-to-point communication.
【24h】

Optimization-based flow control in multipoint-to-point communication.

机译:多点对点通信中基于优化的流控制。

获取原文
获取原文并翻译 | 示例

摘要

Multipoint-to-point communication allows a group of sources to transfer data to one destination. A major requirement of flow control for such connections is to ensure a fair allocation of resources while maintaining a high level of resource utilization. This work treats multipoint-to-point flow control as a multiple-objective optimization problem and presents a theoretical centralized model as well as a distributed algorithm to compute rate allocations based on this global optimization. Three control objectives have been identified as critical to the flow control of multipoint-to-point connections: overall network throughput, fairness amongst sources, and fairness amongst groups.; The theoretical model is a linearly constrained quadratic programming model with an objective of minimizing weighted sums of individual objective functions. The weighting factors become tuning factors with which decision makers can set their decision preferences. It was shown that the three objectives may indeed be conflicting with each other and, by varying the values of tuning factors, an optimum rate allocation can be achieved to realize many flavors of objective mix.; The distributed algorithm attempts to implement the centralized model in a distributed environment. A resource pricing with an aggregate utility maximization scheme was used to allocate bandwidth to maximize overall throughput. The algorithm is integrated with an explicit rate indication algorithm that optimizes resource allocation based on the source fairness criteria. It was shown that this algorithm attains similar result to the theoretical model and is also tunable.; This thesis shows that multiple-objective optimization-based rate allocation is feasible, flexible, and powerful, especially in situations where we are able to trade some objectives for others.
机译:多点对点通信允许一组源将数据传输到一个目的地。对此类连接进行流量控制的主要要求是确保公平分配资源,同时保持较高的资源利用率。这项工作将多点对点流控制视为一个多目标优化问题,并提出了一种理论上的集中模型以及一种基于该全局优化来计算速率分配的分布式算法。已经确定了三个控制目标对于多点对点连接的流量控制至关重要:总体网络吞吐量,源之间的公平性(italic)和组之间的公平性(italic)。该理论模型是线性约束二次规划模型,其目标是使各个目标函数的加权和最小。加权因子成为调整因子,决策者可以使用这些调整因子来设置决策偏好。结果表明,这三个目标的确可能相互冲突,并且通过改变调整因子的值,可以实现最佳的速率分配,以实现多种目标混合口味。分布式算法尝试在分布式环境中实现集中式模型。使用具有总效用最大化方案的资源定价来分配带宽以最大化整体吞吐量。该算法与显式速率指示算法集成在一起,该显式速率指示算法可基于源公平性标准优化资源分配。结果表明,该算法获得了与理论模型相似的结果,并且是可调整的。本文表明,基于多目标优化的费率分配是可行,灵活且强大的,尤其是在我们能够将某些目标与其他目标进行交易的情况下。

著录项

  • 作者

    Weng, Xinhua.;

  • 作者单位

    Queen's University at Kingston (Canada).;

  • 授予单位 Queen's University at Kingston (Canada).;
  • 学科 Computer Science.
  • 学位 M.Sc.
  • 年度 2002
  • 页码 92 p.
  • 总页数 92
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自动化技术、计算机技术;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号