北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2006, Vol. 29 ›› Issue (6): 49-52.doi: 10.13190/jbupt.200606.49.242

• 论文 • 上一篇    下一篇

动态并行路径流量工程的可实现性研究

冯春燕 , 张晨, 李金岭, 丁炜   

  1. 北京邮电大学 通信网络综合技术研究所,北京 100876
  • 收稿日期:2005-11-27 修回日期:1900-01-01 出版日期:2006-12-30 发布日期:2006-12-30
  • 通讯作者: 冯春燕

Practicability Research of Dynamic Parallel Paths Traffic Engineering

FENG Chun-yan,ZHANG Chen,LI Jin-ling,DING Wei   

  1. Institute of Telecommunication Network Technology, Beijing University of Posts and Telecommunications, Beijing 100876,China
  • Received:2005-11-27 Revised:1900-01-01 Online:2006-12-30 Published:2006-12-30
  • Contact: FENG Chun-yan

摘要:

利用遗传算法研究动态并行路径流量工程的实现方法和可实现性。首先给出了并行路径流量工程理论最优解的求解方法,并对其运算成本和运算结果在工程上的不可实现性进行了分析和验证;进而采用简洁、典型的分流方案,对已有的理论最优解进行局部近似,并基于这些分流方案从全局的角度设计遗传算法,达到了与理论最优解近似的优化效果,且运算量大为减小。通过仿真分析得出了在优化过程中需要对并行路径间的分流误差进行有效控制的结论。

关键词: 流量工程, 并行路径, 遗传算法, 可实现性, 分流误差

Abstract:

The implementation and practicability of dynamic parallel paths traffic engineering (DPPTE) with genetic algorithm was analyzed. An algorithm for the theoretical optimization of DPPTE was offered at first. The computing cost and the outcome were unrealized technically. Thereafter, a new genetic algorithm was designed based on practicable traffic assignment solutions, and the optimization performance of the algorithm was closed to the theoretical one with a little computing cost. The simulations proves that traffic assignment errors between parallel paths will be controlled in the optimizing.

Key words: traffic engineering;parallel paths, genetic algorithm;practicability, traffic assignment error

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