A Distributed Cooperative Spectrum Awareness Method for Full-Band Detection in Dense Networks

Abstract

The invention provides a dense network full-frequency-band detection-oriented distributed cooperative frequency spectrum cognition method. The process includes the following steps: S1, grouping all to-be-detected frequency points, respectively allocating each node to a set of to-be-detected frequency points, and ensuring that all frequency points are completely allocated in one-hop ranges of all the nodes; S2, respectively carrying out energy detection on the allocated frequency points by all the nodes; S3, obtaining an interaction order of all the nodes in an entire network; S4, carrying outinteraction sharing on energy information of detection according to the interaction order; S5, carrying out iteration by nodes, which receive the shared information, on results of the same and last iteration thereof until all the nodes complete one time of sharing and finally reach a result of consistent convergence, and otherwise, returning to the S3; and S6, comparing iteration results with a decision threshold by all the nodes to obtain a final frequency use decision for the global frequency points. The method can effectively cope with requirements of full-frequency-band detection in a dense network scene, and effectively reduce perception time delay while higher detection accuracy is ensured.

Description

technical field [0001] The invention belongs to the technical field of cognitive ad hoc network cooperative communication, and in particular relates to a distributed cooperative spectrum cognitive method for dense network full frequency band detection. Background technique [0002] Cognitive radio is also called smart radio. It is characterized by flexibility, intelligence, and reconfigurability. By sensing the external environment, it can purposely change operating parameters such as transmission power and frequency points in real time, so as to realize any time and any place. Highly reliable communication. In cognitive ad hoc networks based on cognitive radio technology, spectrum awareness is considered to be the key to success. Through periodic spectrum availability and interference detection, the spectrum availability priority list and interference information are obtained, and the authorized frequency band with higher priority is accessed and used to achieve the purpos...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, in order to solve the problem of large cooperative perception delay in the dense network multi-node cooperative communication full-band detection scenario, and propose a distributed cooperative spectrum recognition oriented to dense network full-band detection. This method can effectively meet the needs of full-band detection in dense network scenarios, and effectively reduce the perception delay while ensuring high detection accuracy.

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