Secondary user dominated channel reservation in Cognitive Radio
Secondary user dominated channel reservation in Cognitive Radio
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DOI：
10.1109/icnidc.2010.5659457
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发表时间：
2010-12
期刊：
影响因子：
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通讯作者：
Shoufeng Wang;Fan Li;Weidong Wang;Ben Wang;Yinghai Zhang
中科院分区：
文献类型：
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作者：
Shoufeng Wang;Fan Li;Weidong Wang;Ben Wang;Yinghai Zhang
信道预留用于降低频谱切换引起的次用户掉线率。本文研究了多主系统共存的一个次系统中保留信道的维护问题。提出了全局信道预留方案、用户信道预留方案和用户更新的信道预留方案，并通过不同的马尔可夫模型推导。数值结果表明，全局信道预留方案比用户更新/用户信道预留方案具有更高的吞吐量，而用户更新信道预留方案的丢包率在三种方案中最低。
Channel reservation is used to decrease the drop ratio of secondary users caused by spectrum handover. This paper considers the maintainer of the reserved channels in one secondary system coexisting with multiple primary systems. The global channel reservation scheme, the user channel reservation scheme, and the user-updated channel reservation scheme are proposed, derived by different Markov models. Numerical results show that the global channel reservation scheme performs higher throughput than the user-updated/user channel reservation schemes, while the user-updated channel reservation scheme gains the lowest drop ratio among the three schemes.