一种基于代价的冒泡式多优先级认知无线电排队接入机制

发布时间：2019-01-09 06:23

【摘要】：本文首先根据认知无线电实际环境,在一类虚警事件和三类漏检事件的影响下,对M/G/1排队模型进行修正,给出主用户及次级用户数据传输时间的一阶矩和二阶矩的解析解,得到M/G/1-R(M/G/1-Revised)排队模型.其次在多优先级次级用户情境下,提出一种基于系统代价的冒泡式排队接入方案(B-M/G/1-R,Bubble-M/G/1-Revised),给出该方案能够最小化系统代价的证明过程.仿真与数值计算验证了M/G/1-R的有效性,在实际认知无线电环境下,B-M/G/1-R能够获得最小的系统代价和次级用户数据传输中断次数.
[Abstract]:This paper first modifies the M/G/1 queuing model under the influence of a class of false alarm events and three kinds of missed detection events according to the actual environment of cognitive radio. The analytical solutions of the first and second moments of data transmission time for primary and secondary users are given and the M/G/1-R (M/G/1-Revised) queuing model is obtained. Secondly, in the case of multi-priority secondary users, this paper proposes a system cost based bubbling queueing access scheme (B-M / G / 1-R Bubble-M / G / 1-revised), and gives the proof process that the scheme can minimize the system cost. Simulation and numerical calculation show the effectiveness of M/G/1-R. In the actual cognitive radio environment, B-M/G/1-R can obtain the minimum system cost and the number of secondary user data transmission interruptions.
【作者单位】：北京邮电大学信息与通信工程学院;
【基金】：国家自然科学基金(No.61171176) 国家科技重大专项(No.2010ZX03006-006)
【分类号】：TN925

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