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Multi-user admission control method and system in cognitive radio communication system

A technology of cognitive user and admission control, applied in wireless communication, access restriction, electrical components, etc., can solve problems affecting normal communication of authorized users, communication interference of authorized users, interference of authorized users, etc.

Inactive Publication Date: 2011-10-05
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

[0008] Obviously, since in the cognitive radio communication system, the cognitive users allowed to be admitted use the frequency allocated to the authorized users, so if the cognitive users are admitted, the cognitive users will cause interference to the authorized users
In this case, if the admission control method for the cognitive user does not consider the interference to the authorized user and the interference limit of the authorized user, it will cause interference to the communication of the authorized user, thereby affecting the normal communication of the authorized user , and will also increase the probability of communication interruption for authorized users

Method used

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  • Multi-user admission control method and system in cognitive radio communication system
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  • Multi-user admission control method and system in cognitive radio communication system

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Embodiment Construction

[0036] Various aspects of the disclosure are described below. It should be appreciated that the teachings herein may be embodied in a wide variety of forms and that any specific structure, function, or both disclosed herein are merely representative. Based on the teachings herein one skilled in the art should appreciate that an aspect disclosed herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented or a method practiced using any number of the aspects set forth herein. In addition, such an apparatus may be implemented or such a method may be practiced with other structure, functionality, or structure and functionality in addition to or in addition to one or more of the aspects set forth herein. Additionally, any aspect described herein may comprise at least one element of a claim.

[0037] Embodiments according to the present invention will be described b...

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Abstract

The invention provides a multi-user admission control method used in an uplink of a cognitive radio communication system. The method comprises the following steps that: a cognitive base station receives an access request message from one or more cognitive users; the cognitive base station acquires frequency range information from available frequency range and user information of an authorized user using the authorized frequency range, wherein the user information at least comprises pilot frequency information of the authorized user; the cognitive base station transmits the acquired frequency range information and the user information of the authorized user to the one or more cognitive users; and based on interference channel gain reported by the one or more cognitive users and a channel fading characteristic in the authorized frequency range, the cognitive base station performs admission control on the one or more cognitive users. In addition, the cognitive base station performs power distribution on the cognitive users subjected to admission control, so that the cognitive users can efficiently use the authorized frequency range for communication without influence on the normal communication of the authorized user.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, to a method and system for performing multi-user admission control in the uplink of a cognitive radio communication system. Background technique [0002] As the demand for wireless communication continues to grow, the requirements for the data transmission rate supported by wireless communication technology are getting higher and higher. According to Shannon's information theory, these communication systems have a corresponding increase in demand for wireless spectrum resources, resulting in increasingly tight spectrum resources suitable for wireless communication, which has become a new bottleneck restricting the development of wireless communication. [0003] In addition, according to the spectrum management method of the existing wireless communication system, some spectrum resources are fixedly allocated to some users (that is, authorized users), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/08H04W48/16
Inventor 郭莉牛凯朱凯许文俊王强林家儒
Owner BEIJING UNIV OF POSTS & TELECOMM
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