Millimeter wave spectrum sharing method and system based on clustering algorithm

Abstract

The invention relates to a millimeter wave spectrum sharing method based on a clustering algorithm. The method comprises the following steps of: enabling a plurality of base stations to receive position signals which are transmitted by each user side and contain position information so as to obtain the position information of the user side, determining a plurality of target base stations based ona clustering algorithm and the position information of the plurality of base stations; enabling the clustering algorithm to obtain a plurality of initial center points based on the number of the usersides and the number of the radio frequency links of the base station; obtaining a plurality of clustering center points corresponding to the plurality of user sides based on the plurality of initialcenter points, the number and position information of the plurality of user sides and the number of radio frequency links of each base station, wherein each target base station performs signal transmission with the corresponding user side, each clustering center point corresponds to one target base station, the target base station is the base station having the smallest distance with the clustering center point, and the plurality of base stations and the plurality of user side frequency spectrums are shared. In this case, the coordination overhead and computational complexity of spectrum sharing of the millimeter wave cellular network system can be reduced.

Description

technical field [0001] The present disclosure relates to the technical field of wireless communication, and in particular to a method and system for sharing a millimeter wave spectrum based on a clustering algorithm. Background technique [0002] In modern wireless communications, spectrum resources are very precious as non-renewable resources. The allocation of spectrum resources in traditional communication protocols is exclusive and dedicated. In order to improve spectrum utilization, spectrum sharing technology has emerged, which allows multiple network operators to access the same spectrum resources. The operating frequency of the millimeter wave cellular network system has reached 10-300GHz. Compared with traditional electromagnetic waves, it has a large bandwidth and can greatly solve the problem of spectrum resource shortage. In the prior art, the millimeter wave cellular network system can be used to implement spectrum sharing, and the spectrum sharing of the milli...

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Problems solved by technology

[0004] However, in the above-mentioned prior art, there are often two problems in the spectrum sharing of the millimeter wave cellular network system: (1) exchanging a large amount of information between multiple base stations will lead to very high coordination overhead; (2) searching for multiple base stations The computational complexity of the optimal precoding weight matrix is ​​high

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