摘要
为了进一步提高认知无线电网络中认知用户的切换性能,有效降低认知用户切换中的阻塞率和强制中断率,提出了频谱池与预留信道相结合的解决方案,并且借助马尔科夫链和排队理论对认知切换系统关键指标进行分析。仿真结果显示,该方案能够有效保障和提高认知用户的服务质量。
In order to further improve the handoff performance of cognitive users in cognitive radio networks, effectively reduce the blocking probability and forced termination probability of cognitive users, the solution that combines spectrum pooling and the channel reservation is proposed. And it is to analyze the key points of cognitive handoff system with the help of Markov chain and queuing theory. The simulation results show that the scheme can effectively protect and improve the cognitive user＇s service quality.
出处
《计算机与数字工程》
2014年第9期1663-1667,共5页
Computer & Digital Engineering
关键词
认知无线电
频谱池
预留信道
排队理论
马尔科夫链
阻塞率
强制中断率
cognitive radio, spectrum pooling, channel reservation, queuing theory, Markov chain, blocking probability, forced termination probability
