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Effective Bandwidth for Delay Tolerant Secondary User Traffic in Multi-PU, Multi-SU Dynamic Spectrum Access Networks

机译:多PU,多SU动态频谱接入网络中可容忍次用户流量的有效带宽

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摘要

In this paper, we study two important quality of service (QoS) parameters of dynamic spectrum access (DSA) networks with multiple primary and secondary users. We assume that the secondary users (SUs) are delay tolerant and model the primary user (PU) and SU activity as Markov chains with ON and OFF states. We derive a closed form expression for the probability distribution of buffer occupancy for secondary networks under steady state conditions and formulate an expression for the effective bandwidth under buffer overflow constraints. Extensive simulations are used to validate our analysis.
机译:在本文中,我们研究了具有多个主要和次要用户的动态频谱访问(DSA)网络的两个重要服务质量(QoS)参数。我们假设辅助用户(SU)可以容忍延迟,并将主要用户(PU)和SU活动建模为具有ON和OFF状态的马尔可夫链。对于稳态条件下二级网络的缓冲区占用概率分布,我们导出了一个封闭形式的表达式,并针对缓冲区溢出约束条件下的有效带宽制定了一个表达式。大量的模拟被用来验证我们的分析。

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