Clustering method, equipment and system for cognitive radio system

A cognitive radio and clustering technology, which is applied in wireless communication, transmission systems, electrical components, etc., can solve the problems of far distance between clients and inability to divide client space into clusters, etc.

Inactive Publication Date: 2014-04-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in fact, the clients located on the circle centered on BS may be far apart, so the existing technology cannot divide the clusters according to the space where the clients are located
[0006] 2. If a second user system is added in the area where the first user system already exists, and the existing first user system has a small or medium coverage area, affected by the first user system, the The perception results may appear as follows: the perception results of similar clients are not similar, and some distant clients may have some similar perception results (maybe the first user system has different influences on the perception results of these clients) , which will cause the division of the client cluster of the second user system to be reasonable enough

Method used

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  • Clustering method, equipment and system for cognitive radio system
  • Clustering method, equipment and system for cognitive radio system
  • Clustering method, equipment and system for cognitive radio system

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Experimental program
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Embodiment 1

[0046] This embodiment provides a clustering method of a cognitive radio system performed by a base station, such as figure 1 As shown, the method includes the following steps:

[0047] 101. The base station sends a measurement request message to a client as a measurement user, and the client as a measurement user is a cluster center, that is, a cluster head.

[0048] 102. After the corresponding processing is performed by the cluster head and other clients, the processing result is returned to the base station. In this embodiment, the base station may receive a response to reject the measurement returned by the client as the measurement user, or may receive a response not to be measured. The clustering result returned by the client of the user, the clustering result indicates that the corresponding client belongs to the same cluster as the client of the measurement user or indicates that the corresponding client belongs to the same cluster as the client of the measurement use...

Embodiment 2

[0070] In this embodiment, a clustering method of a cognitive radio system, such as Figure 8 As shown, the method includes the following steps:

[0071] 801. The base station sends a measurement request message to a client as a measurement user, and the client as a measurement user is a cluster center, that is, a cluster head.

[0072] In this embodiment, the client serving as the measurement user may be a client randomly selected by the base station, but it must be satisfied that the selected client does not belong to the existing cluster or the domain of the existing cluster.

[0073] As another possible implementation solution, the client serving as the measurement user in this embodiment may also be a pre-assigned client, so that the base station only needs to sequentially select from all assigned clients.

[0074] 802. After the cluster head and other clients perform corresponding processing, the cluster head or other clients return the processing result to the base sta...

Embodiment 3

[0111] This embodiment specifically describes the process of the entire clustering method with reference to the accompanying drawings. This embodiment is mainly applied to a cognitive radio system. The system includes a base station and clients, and the base station selects at least one client from all clients as a measurement user. Such as Figure 14 As shown, the specific clustering process is as follows:

[0112] 1401. The base station sends a measurement request message to a client as a measurement user. The client as a measurement user is a cluster center, that is, a cluster head.

[0113] 1402. After receiving the measurement request message sent by the base station, the client as the measurement user determines whether the client itself belongs to an existing cluster or belongs to the field of an existing cluster; if the client itself belongs to an existing cluster or belongs to If there is already a clustered domain, execute step 1403; if the client itself does not be...

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Abstract

A method, a device and a system for clustering in cognitive radio system are provided by the invention, which solve the problem that the existing wireless system could not perform clustering in accordance with the spatial location of a client. The embodiment of the invention sends a measuring request message to a measuring user through a base station, and then the measuring user broadcasts a cluster beacon message to its surrounding clients, and if the power of the cluster beacon message received by the surround client satisfies the requirement, then a clustering result would be returned to the base station.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a clustering method, device and system of a cognitive radio system. Background technique [0002] Clustering is a solution for the CR system (Cognitive radio system, cognitive radio system) to reduce overhead and redundancy during the execution of the coexistence mechanism. In the CR system without clustering, all clients must perceive the channel in the sensing cycle and report the sensing results to the BS (base station). If the clients in the CR system are clustered, then only A client or some clients report the sensing result to the BS, which can reduce the channel overhead of reporting the sensing result. [0003] The current clustering scheme is to broadcast a measurement message with a certain power to the client through the BS, and the client will return the strength of the received measurement message to the BS, and the BS will perform clustering ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/00
CPCH04W24/06H04W24/02
Inventor 吕林军伍天宇刘坚能
Owner HUAWEI TECH CO LTD
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