Spectrum sharing through distributed coordination in dynamic spectrum access networks
Spectrum sharing through distributed coordination in dynamic spectrum access networks
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DOI：
10.1002/wcm.481
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Jun Zhao;Haitao Zheng;Guang-Hua Yang
中科院分区：
文献类型：
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作者：
Jun Zhao;Haitao Zheng;Guang-Hua Yang
开放频谱系统中的频谱共享是一个具有挑战性的问题，特别是因为用户体验到随时间和位置变化的动态频谱可用性。在没有任何集中的基础设施的情况下，用户可以协调他们的频谱使用，以支持频谱的公平接入和避免干扰。一个关键的挑战是在频谱动态存在的情况下构建有效的信令路径，其中用户可靠地交换控制和协商信息。在本文中，我们提出了一种分布式协调协议（HDMAC）来构建一个带内控制路径，而不依赖于预先分配的带外控制通道的存在。特别地，我们提出了一种利用本地公共信道构建协调路径的分布式分组结构，以及一种选择数据传输信道的异构感知排序方案。大量的实验结果证明了该方法的有效性和可靠性。
Spectrum sharing in open spectrum systems is a challenging problem, particularly since users experience dynamic spectrum availabilities that vary over time and location. In the absence of any centralize infrastructure, users coordinate their spectrum usage to support fair access of spectrum and avoid interference. One critical challenge is to construct an efficient signalling path in the presence of spectrum dynamics, where users exchange control and negotiation information reliably. In this paper we propose a distributed coordination protocol (HDMAC) to construct an in-band control path without relying on the existence of a pre-assigned out-of-band control channel. In particular, we propose a distributed group formation to construct coordination path using local common channels, and a heterogeneity-aware ranking scheme to select channels for data transmissions. Extensive experimental results demonstrate the efficiency and reliability of the proposed approach.