标题： 将排队机制整合到认知无线电信道聚合策略中：性能评估 显示英文标题

标题： Integrating Queuing Regime into Cognitive Radio Channel Aggregation Policies: A Performance Evaluation

摘要： 信道聚合（CA）是认知无线电网络带来的一项最新概念，用于促进第五代/下一代无线网络的顺利部署。 这是将多个未使用的主用户频谱空洞组合成一个逻辑上可用的信道。 然而，考虑到无线链路的动态特性和自适应调制与编码（AMC），已经研究了几种策略。 例如，即时阻塞策略（IBS）和基于重新调整的策略（RBS）。 本文开发并比较了两种带有队列的CA策略，即带有队列的IBS（IBS + Q）和带有队列的RBS（RBS+Q）。 这是对之前提出的工作的进一步推进。 目的是确定队列机制对次级网络性能的影响，使得任何尚未完成服务的次级用户（SU），作为丢弃或强制终止服务的替代方案，可以被排队，以便获得再次访问主用户（PU）信道的机会。 性能通过仿真框架进行评估。 结果验证了设计良好的队列机制可以显著降低阻塞和强制终止的概率，从而提高容量、接入等指标。 显示英文摘要

摘要： Channel aggregation (CA) is one of the newest concept which cognitive radio network is bringing to bear for the smooth role out of fifth/next generation wireless networks. This is the combining of several unused primary user spectrum holes into a logic usable channel. However, several of these strategies have been investigated considering the varying nature of wireless link and adaptive modulation and coding (AMC). Examples are the instant blocking strategy (IBS) and readjustment based strategy (RBS). This paper develops and compares two CA policies with queue, which are the IBS with queue (IBS + Q), and the RBS with queue (RBS+Q). This is in furtherance of previous proposed work. The aim is to identifying the impact of a queuing regime on the performance of the secondary network such that any secondary user (SU) that has not completed its service, as an alternative to dropping or forcibly terminating the service, it is queued in order to get another opportunity to access the primary user (PU) channels. The performance is evaluated through a simulation framework. The results validate that with a welldesigned queuing regime, capacity, access and other metrics can be improved with significant reduction in blocking and forced termination probabilities respectively.