A Joint Channel and Power Allocation Method for Cognitive Radio Networks

A technology of cognitive radio and channel allocation, which is applied in the field of channel and power resource allocation, and can solve the main problems and the problems that the key technology has not been effectively solved.

Inactive Publication Date: 2011-12-07
XIANGTAN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

Research on cognitive radio networks has just started, and there are still many major problems and key technologies that have not been effectively resolved

Method used

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  • A Joint Channel and Power Allocation Method for Cognitive Radio Networks
  • A Joint Channel and Power Allocation Method for Cognitive Radio Networks
  • A Joint Channel and Power Allocation Method for Cognitive Radio Networks

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Embodiment Construction

[0061] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments: a joint channel and power allocation method for a cognitive radio network:

[0062] The entire functional framework of the present invention mainly includes three modules: a cognitive user information collection module, a radio environment detection module, and a cognitive base station channel allocation algorithm function module. The realization of the function as figure 1 shown.

[0063] (1) Cognitive user information collection module

[0064] The role of this module is to collect the data rate requirement information of each cognitive user's current service in the cognitive radio network, and the data rate is one of the main indicators reflecting QoS. This module is also responsible for counting the number of cognitive users in the network as the basis for alliance grouping in channel allocation. In addition, this module also needs to tra...

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Abstract

The invention discloses a channel and power joint allocation method for a cognitive radio network. This method starts from the cognitive user's speed requirement and user fairness, uses the Nash coordination solution in the cooperative game to construct the target utility function, and fully considers the cognitive user's fairness and the Avoidance of primary user interference. Through step-by-step analysis and derivation, a heuristic sub-channel allocation algorithm is established. This method not only has the advantage of meeting the rate requirements of cognitive users, but also fully guarantees the fairness of cognitive users.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to the allocation of channels and power resources applied in cognitive radio networks. Background technique [0002] With the continuous increase of wireless applications and the development trend of high-speed and broadband wireless networks, wireless spectrum resources are facing a serious shortage. However, according to a large number of research results, the lack of spectrum resources is mainly due to the current wireless access technology. It is caused by unreasonable use of spectrum. The existing spectrum allocation method for wireless communication networks mainly adopts a fixed allocation method, that is, a certain spectrum block is allocated to a specific wireless access network, and then the wireless spectrum block is divided into several fixed-sized sub-blocks. A guard frequency band is separated and allocated to different authorized operators. Although this fixed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10H04W16/14H04W72/08
Inventor 曹江莲裴廷睿李哲涛赵智杨万春
Owner XIANGTAN UNIV
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