Firstly, we've divided the CR users into some clusters and chosen the cluster-head nodes.

首先，我们将认知用户分为若干个簇，并选出簇头节点。

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The CR users in the same cluster make a cluster decision together, and then the cluster-head nodes conduct a communication to make the global sensing decision.

在同一个簇中的认知用户，共同做出一个簇判决，之后，各个簇头节点进行通信做出全局判决。

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A query register mechanism is proposed to enhance the cluster head nodes ability of resource discovery.

提出了查询登记机制，以提高簇头节点资源发现能力。

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