中国邮电高校学报(英文) ›› 2015, Vol. 22 ›› Issue (1): 17-23.doi: 10.1016/S1005-8885(15)60620-3

• Networks • 上一篇    下一篇

Virtual network embedding through node connectivity

丁健1,黄韬1,王健2,胡文博1,刘江1,刘韵洁2   

  1. 1. 北京邮电大学
    2. 北京邮电大学信息与通信工程学院
  • 收稿日期:2014-07-23 修回日期:2014-09-24 出版日期:2015-02-28 发布日期:2015-02-28
  • 通讯作者: 丁健 E-mail:buptsky@gmail.com
  • 基金资助:

    国家973重点基础研究发展计划;国家自然科学基金;中央高校基本科研业务费专项资金

Virtual network embedding through node connectivity

  • Received:2014-07-23 Revised:2014-09-24 Online:2015-02-28 Published:2015-02-28
  • Contact: Jian Ding E-mail:buptsky@gmail.com
  • Supported by:

    National Basic Research Program (973) of China;National Natural Science Foundation of China;the Fundamental Research Funds for the Central Universities

摘要: Virtual network embedding (VNE) is an essential part of network virtualization, which is considered as one of the most promising way for the future network. Its main object is to efficiently assign the nodes and links of a virtual network (VN) to a shared substrate network (SN). The NP-hard and exiting studies have put forward several heuristic algorithms. However, most of the algorithms only consider the local resource of nodes, such as CPU and bandwidth (BW), to decide the embedding, and ignore the significant impact of network attributes. Based on the attributes of entire network, a model of the connectivity between each pair of nodes was formulated to measure the resource ranking of the nodes, and a new two-stage embedding algorithm was proposed. Thereafter, the node mapping and link mapping can be jointly considered. Extensive simulation shows that the proposed algorithm improves the performance of VNE by increasing the revenue/cost ratio and acceptance ratio of VN requests while reducing the runtime.

关键词: virtual network virtualization, VNE, attributes of entire network, connectivity

Abstract: Virtual network embedding (VNE) is an essential part of network virtualization, which is considered as one of the most promising way for the future network. Its main object is to efficiently assign the nodes and links of a virtual network (VN) to a shared substrate network (SN). The NP-hard and exiting studies have put forward several heuristic algorithms. However, most of the algorithms only consider the local resource of nodes, such as CPU and bandwidth (BW), to decide the embedding, and ignore the significant impact of network attributes. Based on the attributes of entire network, a model of the connectivity between each pair of nodes was formulated to measure the resource ranking of the nodes, and a new two-stage embedding algorithm was proposed. Thereafter, the node mapping and link mapping can be jointly considered. Extensive simulation shows that the proposed algorithm improves the performance of VNE by increasing the revenue/cost ratio and acceptance ratio of VN requests while reducing the runtime.

Key words: virtual network virtualization, VNE, attributes of entire network, connectivity