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Broadband frequency spectrum sensing method and broadband frequency spectrum sensing device

A broadband spectrum and spectrum sensing technology, applied in the field of broadband spectrum sensing methods and related devices, can solve the problems of high data interaction overhead and low probability of idle PU physical channels, reduce system overhead, reduce time for spectrum holes, and improve efficiency effect

Inactive Publication Date: 2015-03-18
ZTE CORP
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Problems solved by technology

[0004] The purpose of the present invention is to provide a broadband spectrum sensing method and device, which can better solve the problems of low probability of detecting idle PU physical channels and high data interaction overhead in the traditional single-channel spectrum sensing strategy

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  • Broadband frequency spectrum sensing method and broadband frequency spectrum sensing device
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  • Broadband frequency spectrum sensing method and broadband frequency spectrum sensing device

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[0050] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0051] In the present invention, the FC obtains the current statistical idle probabilities of all PU physical channels from the spectrum sensing database, and arranges the sensing order of the channels according to the statistical idle probability of the PU physical channels, and the channels with high idle probability are counted for priority perception. Then, the FC allocates an appropriate number of sensing nodes SN to the PU physical channel to be sensed according to the requirements of the preset false alarm probability and detection probability in the system, and informs the SN to perform channel sensing. The SN uses a normalized energy detector to obtain the...

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Abstract

The present invention relates to the field of communications. Disclosed are a broadband spectrum sensing method, a fusion center (FC), a sensing node (SN) and a computer storage medium. The method comprises: the FC obtaining statistical idle probabilities of all current primary user (PU) physical channels; based on a sequence of the statistical idle probabilities from large to small, assigning SNs used for detecting channel spectrums to the PU physical channels in sequence; using the SNs assigned to the PU physical channels to detect the channel spectrums for the PU physical channels; and based on channel spectrum detection results, determining status of the PU physical channels.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to a database-based high-efficiency broadband spectrum sensing method and related devices. Background technique [0002] Cognitive Radio (CR) technology is proposed to solve the problem of scarcity of spectrum resources currently faced. Spectrum sensing algorithm is one of the key technologies of cognitive radio. In actual applications, the Primary User (PU) system is usually a broadband system. Some PU systems have a bandwidth of hundreds of megabytes and dozens of channels, and some PU systems even have frequency channel resources across frequency bands. For example, in China Mobile Multimedia Broadcasting (CMMB) system, the U-band transmission frequency is 470MHz~798MHz (36 channels), and the S-band transmission frequency is 2635MHz~2660MHz. Generally, the occupancy conditions of the physical channels of the PU system are independent of each other, that is, whether the adjacent...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/382
CPCH04B17/00H04B17/391H04W24/08H04W72/00
Inventor 李岩王军张力刘星闫如胜王斌
Owner ZTE CORP
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