Data base holding dynamic spectrum management and data inquiring method

Abstract

The related database fit to dynamic frequency spectrum management comprises: a sub-database for initial state of the spectrum, a sub-database for entire state, a query sub-database, an analysis sub-database for cavity, a sub-database for cavity level label, a statistic sub-database for initial spectrum, an entire statistic sub-database, and a power gradient factor sub-database. This invention provides lots of query methods according to user request, and convenient to manage and maintain.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a database and a data query method supporting dynamic spectrum management, which are used for spectrum management and hole query by a dynamic spectrum management center. Background technique [0002] Cognitive Radio (Cognitive Radio) is a new concept that appeared internationally in the 1990s. A research focus of this technology is the perception and utilization of the wireless environment, and realizes the dynamic reuse of frequency bands already allocated to users and idle 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 business, it can only be used by the business; further, a certain frequency band is allocated to a certain If there is a wireles...

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Problems solved by technology

[0004] As a supplement and modification to the traditional radio spectrum management method, the dynamic spectrum management system based on cognitive radio technology needs to reallocate frequency bands, so the dynamic spectrum management center must know the spectrum usage status at a certain location at a certain moment, And in order to know the usage status of the spectrum, it is necessary to have a spectrum detection device at the corresponding time and corresponding place. If there is a detection device, then the usage status of the spectrum at that time can be detected (also only the instantaneous usage status, lacking the use of history) 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, but if there is a record It would be much easier if a database of spectrum usage existed

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