摘要
首先提出一种衡量分层覆盖系统性能的效用函数,该效用函数综合考虑了阻塞率和切换次数;然后,提出了一种自适应分层覆盖系统,该系统允许接入宏蜂窝的移动台可以与任何基站通信。仿真结果表明:在阻塞率、切换次数、效用函数等方面自适应分层覆盖系统优于传统分层覆盖系统。
First,a utility function was proposed to evaluate the performance of hierarchical cellular system.Both the blocking probability and handover times were considered in the function.Second,an adaptive hierarchical cellular system was proposed which allows the mobile equipments in macrocells to communicate with any base station in the system.Simulation results indicate that the adaptive hierarchical cellular system performances better than hierarchical cellular system in blocking probability,handover times and utility function.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2011年第10期189-192,共4页
Journal of Central South University of Forestry & Technology
基金
教育部高等学校高职高专计算机类专业教学指导委员会<计算机类专业工学结合机制创新研究>(jzw59010818)
中央财政支持的实训基地(XJK06CZCO46)(财教[2008]221号)
关键词
分层覆盖
阻塞率
切换次数
hierarchical coverage
blocking probability
handover times
