摘要
以混合信道分配技术为研究对象,在建立拟生灭过程的数学模型过程中选择切换保留混合优先级算法,然后通过模型平稳分布的求解得出性能指标的数学表达式,通过仿真对其性能进行比较.结果表明混合信道分配略差于动态信道分配,但明显优于固定信道分配.
Hybrid Channel Allocation（HCA）which is a compromise has the virtue of Fixed Channel Allocation （FCA）and Dynamic Channel Allocation （DCA）. In order to improve the efficiency of channel utilization,this article constructs models of the three channel allocation strategies based on Quasi-Birth-and-Death processes （QBD）during which we select the hybrid priority handoff reservation algorithm. We derive the mathematical expressions of key performance indicators such as call blocking probability. Simulation and comparisons of the performance among FCA, DCA and HCA are given. The results show that HCA has a little worse performance than DCA, but much better than FCA.
出处
《河南科学》
2009年第9期1102-1107,共6页
Henan Science
基金
国防科技重点实验室航空基金(20085155008)
关键词
固定信道分配
动态信道分配
混合信道分配
QBD过程
性能分析
fixed channel allocation
dynamic channel allocation
hybrid channel allocation
QBD process
performance analysis
