论文部分内容阅读
为了降低认知用户数据包的平均时延,同时提高其吞吐量,针对集中式认知无线网络,提出一种基于mini-slot时间结构的频谱分配策略.考虑频谱切换过程和非理想感知结果,建立三维Markov模型,并使用矩阵几何解方法给出认知用户数据包平均时延和吞吐量等性能指标表达式.通过系统实验定量分析性能指标的变化趋势,验证基于mini-slot时间结构的频谱分配策略的有效性.面向认知用户构造个人收益和社会收益函数,给出频谱接入的收费方案,实现所提频谱分配策略的社会最优.
In order to reduce the average delay of cognitive user data packets and improve the throughput, aiming at the centralized cognitive wireless network, a spectrum allocation strategy based on the mini-slot time structure is proposed.Considering the spectrum handover process and the non-ideal perception, The three-dimensional Markov model is established, and the expression of performance index such as average delay and throughput of cognitive user data packet is given by using the matrix geometric solution method. By systematically analyzing the trend of the performance index, the spectrum based on the mini-slot time structure is verified The effectiveness of allocation strategy.For the cognitive user construct personal income and social income function, give the spectrum access charging scheme, to achieve the social optimal allocation spectrum allocation strategy.