中国邮电高校学报(英文) ›› 2012, Vol. 19 ›› Issue (2): 74-80.doi: 10.1016/S1005-8885(11)60248-3

• Networks • 上一篇    下一篇

Joint relay station deployment and frequency reuse scheme for two-hop cellular networks

陈浩凯,尹慧,梁剑,李中年,刘守印   

  1. 华中师范大学
  • 收稿日期:2011-06-06 修回日期:2011-12-22 出版日期:2012-04-30 发布日期:2012-04-17
  • 通讯作者: 陈浩凯 E-mail:chenhaokaiz@163.com

Joint relay station deployment and frequency reuse scheme for two-hop cellular networks

  1. Department of Electronic and Information Engineering, Central China Normal University, Wuhan 430079, China
  • Received:2011-06-06 Revised:2011-12-22 Online:2012-04-30 Published:2012-04-17
  • Contact: Hao-Kai CHEN E-mail:chenhaokaiz@163.com

摘要:

To fully exploit the performance benefits of relay station (RS), in the two-hop cellular networks covering hotspots, when the number of RSs is predetermined, both RS deployment and frequency reuse scheme are jointly optimized for the purpose of maximizing the system capacity based on the constraints of system demand of capacity and the maximum number of outage demand nodes (MNDN). Further, considering the overhead of increasing RSs, it is desired to use minimum number of RSs. The joint RS deployment and frequency reuse scheme (JRDFR) problem is formulated into a mixed integer nonlinear programming, which is non-deterministic polynomial-time hard in general. A heuristic approach based on genetic algorithm is proposed to tackle the JRDFR problem. The computational experiment of the heuristic approach is achieved and optimized RS deployment and frequency reuse scheme is obtained. Finally, we discuss the impacts of MNDN and the number of RSs on the system performance.

关键词:

relay station deployment, frequency reuse scheme, two-hop cellular networks

Abstract:

To fully exploit the performance benefits of relay station (RS), in the two-hop cellular networks covering hotspots, when the number of RSs is predetermined, both RS deployment and frequency reuse scheme are jointly optimized for the purpose of maximizing the system capacity based on the constraints of system demand of capacity and the maximum number of outage demand nodes (MNDN). Further, considering the overhead of increasing RSs, it is desired to use minimum number of RSs. The joint RS deployment and frequency reuse scheme (JRDFR) problem is formulated into a mixed integer nonlinear programming, which is non-deterministic polynomial-time hard in general. A heuristic approach based on genetic algorithm is proposed to tackle the JRDFR problem. The computational experiment of the heuristic approach is achieved and optimized RS deployment and frequency reuse scheme is obtained. Finally, we discuss the impacts of MNDN and the number of RSs on the system performance.

Key words:

relay station deployment, frequency reuse scheme, two-hop cellular networks