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Method and system for detecting cooperative frequency spectrum

A technology of collaborative spectrum and detection method, applied in the field of spectrum detection, can solve the problems of low detection accuracy and few access opportunities

Inactive Publication Date: 2014-04-02
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since the above-mentioned spectrum detection method in the prior art is based on single-band detection, there are technical defects such as low detection accuracy and few access opportunities for multi-user detection and multi-band detection.

Method used

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  • Method and system for detecting cooperative frequency spectrum
  • Method and system for detecting cooperative frequency spectrum
  • Method and system for detecting cooperative frequency spectrum

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Embodiment Construction

[0042] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0043] figure 1 It is a flow chart of the collaborative spectrum detection method of the present invention, including:

[0044] Step 1. Several cognitive users perform time-sharing detection on the preset frequency band according to the preset detection time;

[0045] Step 2, the cognitive user sends the detection information to the central unit;

[0046] Step 3. The central unit fuses the detection information and judges access opportunities of each frequency band.

[0047] In the above technical solution, several cognitive users are pre-allocated in several frequency band groups, each frequency band group corresponds to a frequency band, cognitive users are pre-allocated with detection time, and each cognitive user in each frequency band group is allocated according to The detection time performs time-division detec...

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Abstract

The invention relates to a method and a system for detecting cooperative frequency spectrum. The method for detecting cooperative frequency spectrum comprises that a plurality of cognitive users are detected in a time sharing way on the preset bands according to the preset detection time; the cognitive users send detection information to a central unit; and the central unit integrates the detection information and judges the opportunity for access to each band. According to the number of the cognitive users, the number of the bands and the signal situation of the authorized users, through the proper setting of the detection of the number of the cognitive users on each band, the detection time of each cognitive user and the integration of multi-band detection information, on the premise that the interference to the authorized users is less than certain level, the access opportunity is effectively increased.

Description

technical field [0001] The invention relates to a spectrum detection method and system, in particular to a cooperative spectrum detection method and system for multi-user detection and multi-band detection. Background technique [0002] Cognitive radio networks perceive the external environment and use artificial intelligence technology to learn from the environment, purposefully change certain operating parameters (such as transmission power, carrier power, and modulation, etc.) in real time, and adapt their internal states to the received wireless signals Statistical changes of , so as to realize highly reliable communication at any time and any place, and efficiently utilize wireless spectrum resources with priority in heterogeneous network environments. Users in a cognitive radio network are called cognitive users, and users who purchase frequency band usage rights are called authorized users. Authorized users have a higher priority in using frequency bands than cognitiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/00H04W24/00H04W74/08H04B17/382
Inventor 张军刘凯肖林
Owner BEIHANG UNIV