【作者】 肖英； 叶强；

【Author】 XIAO Ying,YE Qiang C(hinaJi liangU niversityH,angzhouZ hejiang310018,China)

【机构】 中国计量学院；

【摘要】 该文根据低轨道卫星通信中,呼叫请求到达的特点,以带滞后结构的马尔可夫链模型来模拟信道的占用和分配状态,对新呼叫阻塞率和切换呼叫中断率进行评估。仿真结果表明:较低通信量负载时,这种信道分配策略简单有效,在保证切换呼叫中断率小于0.05%的情况下,呼叫阻塞率大大降低,同时提高资源利用率。更多还原

【Abstract】 This paper simulates the states of occupied channels and allocated channels using Markov Chain model with hysteresis based on the characteristics of input traffic in low earth orbit(LEO) satellite communications,to e-valuate the call blocking probability and dropping probability.The simulation results show that with lower traffic load,this method is simple and efficient,blocking probability decreases dramatically,and resource utilization is im-proved little in the case of handoff dropping probability being less than 0.05%.更多还原