Spectrum resource configuration method based on grouped game exchange and optimized power control in cognitive radio

A technology of cognitive radio and configuration method, which is applied in the field of spectrum resource configuration based on packet game switching and optimized power control, and can solve problems such as inability to guarantee spectrum sharing.

Active Publication Date: 2016-06-22
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0003] In order to overcome the inability of the existing dynamic spectrum access method to ensure that spectrum sharing can optimize the spectrum resource allocation in the DSA network, the present invention considers two parts of interference including between PUs and SUs and between different SUs, and propos

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  • Spectrum resource configuration method based on grouped game exchange and optimized power control in cognitive radio
  • Spectrum resource configuration method based on grouped game exchange and optimized power control in cognitive radio
  • Spectrum resource configuration method based on grouped game exchange and optimized power control in cognitive radio

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[0108] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0109] refer to figure 1 , a spectral resource allocation method based on packet game switching and optimized power control in cognitive radio, the implementation of this method can maximize the net income of PUs and improve the overall system efficiency while satisfying the QoS requirements of PUs and SUs respectively. spectrum resource utilization. The present invention is applied in cognitive radio network (such as figure 1 shown). Scenarios in which licensed users (PUs) share their spectrum with unlicensed users (SUs) to obtain additional revenue. In the scenario, two aspects of interference are mainly considered: 1) interference between PUk and SUs sharing spectrum with it 2) interference between SUs accessing the same PUk. At the same time, we consider that PUs need to pay extra power cost to overcome interference, and by weighing the difference bet...

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Abstract

Provided is a spectrum resource configuration method based on grouped game exchange and optimized power control in cognitive radio. The method comprises steps of: (1) while the QoS demands of PUs and SUs are guaranteed, maximizing the total net earning of the PUs, wherein the optimization problem is described as a multivariable non-convexity optimization problem; (2) according to the characteristics of a problem P1, decomposing the problem P1 into a problem (P1-bottom) and a problem (P1-top), wherein the problem (P1-bottom) solves the power distribution problem at the bottom layer and optimizes the power distribution of each user on the condition that a SUs set access to the PU k is given, and the problem (P1-top) further optimizes the selection of the access user when the solution of the problem (P1-bottom) is given; and (3) optimizing the access user set of the problem (P1-bottom) by using an access user selection and power distribution combined control method. The method increases system spectrum utilization ratio and optimizes the configuration of system resources.

Description

technical field [0001] The invention relates to the field of cognitive radio networks, in particular to a spectrum resource configuration method based on packet game exchange and optimized power control in cognitive radio. Background technique [0002] While mobile devices are becoming more and more intelligent, mobile data traffic is growing explosively, and the contradiction between the limited available spectrum resources and the growing demand for mobile data traffic is becoming more and more prominent. Dynamic Spectrum Access (DSA), as an effective complement to traditional fixed spectrum allocation methods in mobile networks, through intelligent reuse of unlicensed systems (PrimarySystem-PS) or licensed users (PrimaryUser-PU) are not fully utilized The licensed spectrum resources enable unlicensed users (SecondaryUser-SU) to access the licensed spectrum of the PU for data transmission in a timely manner, thereby effectively improving the spectrum utilization rate. Due...

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Application Information

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IPC IPC(8): H04W16/10H04W16/14H04W52/24
CPCH04W16/10H04W16/14H04W52/241
Inventor 吴远陈佳超严雨桐钱丽萍
Owner ZHEJIANG UNIV OF TECH
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