Composite criterion rapid spectrum allocation method for multi-user arbitrary bandwidth access

Abstract

The invention discloses a composite criterion rapid spectrum allocation method for multi-user arbitrary bandwidth access, and the method comprises the steps: S1, determining a main user and a cognitive user group, and enabling the cognitive user group to comprise a plurality of cognitive users; s2, according to the information of the frequency band occupied by the master user and the information of the cognitive user, constructing a spectrum allocation model of any bandwidth access scene; s3, according to the working frequency band information and the inherent frequency band of the main user, using the working bandwidth to obtain a plurality of available sub-frequency bands corresponding to the working bandwidth; s4, solving the spectrum allocation model by using a greedy algorithm according to the plurality of available sub-frequency bands and the priority of each cognitive user to obtain the working frequency band of each cognitive user; and S5, performing spectrum allocation on each cognitive user according to the working frequency band of each cognitive user.

Description

technical field [0001] The present invention relates to the technical field of frequency spectrum allocation, in particular to a compound criterion rapid frequency spectrum allocation method for multi-user arbitrary bandwidth access. Background technique [0002] With the rapid development of wireless communication technology, the scale of mobile Internet and Internet of Things network is increasing day by day, and the number of wireless access user equipment is huge, quantified and diverse. Different types of frequency-using terminal equipment have different functions, and there are obvious differences in equipment parameters and spectrum requirements. The operating frequency and occupied bandwidth of these terminal equipment are often fixed and allocated differently, which leads to an increasingly severe shortage of spectrum resources. Cognitive radio technology can dynamically allocate available spectrum to cognitive users who apply for frequency by sensing the usage stat...

AI Technical Summary

Problems solved by technology

[0004] The above algorithm proposes a solution to the dynamic spectrum allocation problem of cognitive radio, but the following problems still exist in the practical scenario of multi-user arbitrary bandwidth access: First, the electromagnetic spectrum is abstracted into resource units, and the spectrum allocation algorithm does not consider different frequencies In the resource-demanding user access scenario, the spectrum allocation is simply abstracted into several frequency bands with the same bandwidth that have already been cut. By default, all cognitive users can use these frequency bands with the same bandwidth. In actual application scenarios, frequency resources may be limited. Waste or the problem that the equipment cannot work normally because the allocated frequency band bandwidth is smaller than the working bandwidth of the user equipment, which lacks practical application value; second, there are various types of cognitive users, and the access priorities of cognitive users are also different

Images