Cognitive small-cell dual resource allocation and disturbance management method based on LTE

Abstract

The invention relates to a cognitive small-cell dual resource allocation and disturbance management method based on LTE. The method is used for achieving the purposes of resource allocation and disturbance management of cognitive users on an authorized frequency band and an unauthorized frequency band, particularly, the purposes of coexistence and resource allocation of the cognitive users and authorized users on the authorized frequency band and coexistence and resource allocation of the cognitive users and WiFi users on the unauthorized frequency band. Limited spectrum resources are nearly exhausted due to an existing network spectrum allocation policy, and communication channels become seriously jammed. According to the method, a cognitive small-cell network with the spectrum detection function is considered and can detect spectrum holes on the authorized frequency band and the unauthorized frequency band, information is transmitted through the spectrum holes in combination with the existing LTE technology, the cognitive users and the authorized users share frequency spectrums on the authorized frequency band, the cognitive users and the WiFi users compete for using the frequency spectrums on the unauthorized frequency band, a simple and effective disturbance management and resource allocation mechanism is proposed, and resources on the authorized frequency band and the unauthorized frequency band are reasonably allocated, so that the transmission rate of the whole network is maximized, and the user satisfaction and the overall system performance are improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method for coexistence with authorized users in authorized frequency bands and with WiFi users in unlicensed frequency bands, and resource allocation issues. Background technique [0002] Due to the continuous increase of smart phones and other wireless broadband users, the mobile broadband data traffic has surged, and the continuous improvement of people's requirements for transmission quality has also brought huge pressure on the network capacity of network operators. To meet rapidly growing data requirements, today's networks must evolve even further. The methods currently used to increase the transmission rate are: ① allocate more spectrum to the network; ② network densification through small cell configuration; ③ other technologies such as spatial processing technology. Among them, using more spectrum to transmit information is the simplest and most effective...

AI Technical Summary

Problems solved by technology

[0004] In summary, the existing methods for increasing network capacity do not fully utilize spectrum resources. The present invention proposes a novel cognitive small cell concept, and a small cell with spectrum detection capability is called a cognitive small cell (CognitiveSmallCell). On the one hand, it has the characteristics of low transmission power and small coverage of small cells, and can use frequency multiplexing to improve spectrum utilization and increase network capacity; on the other hand, it has the characteristics of cognitive radio to dynamically detect spectrum resources. The licensed frequency band can detect other licensed and unlicensed frequency bands at the same time, and the problem of low utilization of spectrum resources in traditional networks can be improved by reusing spectrum

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