Method for managing dynamic spectra on basis of query on data of database

Abstract

The invention discloses a method for managing dynamic spectra on the basis of query on data of a database. The method includes steps of (1), updating the database; (2) enabling the database to compute Wprobability, Gprobability and Bprobability according to inserted contents; (3), enabling a dynamic spectrum management center to design a plurality of query processes according to parameters of unlicensed users and submitting one of query request to the database; (4), enabling the database to retrieve the data according to the query request to obtain a query result; (5), feeding the query result to the dynamic spectrum management center if the query result is normal, distributing the spectra and completing query, or changing a query process if the query result is abnormal or corresponding contents are not found by means of query, and turning to a step (6); (6), turning to the step (3) if the dynamic spectrum management center continues query, or completing query. The method has the advantage that the various query processes which can be selected by the dynamic spectrum management center are designed by the database according to the parameters of the unlicensed users, so that the spectra can be managed and distributed quickly and accurately by the dynamic spectrum management center.

Description

Technical field [0001] The invention relates to a dynamic spectrum management method based on database data query, which belongs to the technical field of wireless communication. Background technique [0002] Cognitive Radio is a new concept that emerged in the 1990s internationally. One of the research focuses of this technology is the perception and utilization of the wireless environment, realizing dynamic reuse of frequency bands that have been allocated to users and unused frequency bands, thereby improving spectrum utilization. [0003] The existing wireless spectrum management rules adopt a single-purpose spectrum allocation scheme, that is, when the radio spectrum management department allocates a certain frequency band to a certain service, it can only be used for that service: furthermore, a certain frequency band is allocated to a certain service. For wireless service operators (or groups, departments, etc.), this frequency band can only be used by users belonging to th...

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Problems solved by technology

[0004] As a supplement and modification to the traditional radio spectrum management method, in view of the dynamic frequency latent management system of cognitive radio technology to reallocate frequency bands, the dynamic spectrum management center must know the spectrum usage status at a certain location at a certain moment , and if you want to know the usage status of the spectrum, you must have a spectrum detection device at the corresponding time and place. If there is a detection device, you can detect the usage status of the spectrum at that time (it is only an instantaneous usage status. Lack of history Usage conditions, such as the long-term use efficiency of each frequency band, the stability of holes, etc.), if there is no spectrum detection equipment at that time, it will become very passive, and it may be too late to call a detection equipment temporarily

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