A Multi-Class Preemptive Priority Cognitive Radio System with Random Interruption Discipline
Cognitive radio system has been studied intensively. It is usually described as a multiserver queue with preemptive multiclass priority queueing system. Segal (1968) has studied a multiserver system with preemptive priority in which customers of higher priorities can preempt customers with lower priorities according to their arriving order. That is,customers with lower priorities are ejected according to the shortest time in service. In many applications,however,it is reasonable to study the system where customers of lower priorities are preempted randomly in spite of their arriving order. In this paper,we investigate such a multiserver Markovian queueing model with K priority classes with preemptive priorities and random preemptive discipline. We derive recurrence relations for the moments of the lifetime distribution of customers of lower priorities and present a numerical method of computing the solution. Finally,the moments of the lifetime distribution are compared numerically for the random interrupted system and the ordinal system.
Cognitive Radio lifetime distribution moments random preemptive discipline preemptive priority
Yunbo Huang Jinting Wang
Department of Mathematics,Beijing Jiaotong University,Beijing 100044,China
国际会议
北京
英文
127-133
2010-07-24（万方平台首次上网日期，不代表论文的发表时间）