Method for coordinating interference among ultra-dense micro base stations based on divide-and-conquer recursion strategy

Abstract

The invention discloses a method for coordinating interference among ultra-dense micro base stations based on a divide-and-conquer recursion strategy, which comprises the following steps of: selecting a micro base station group G and determining the importance degree of each micro base station; determining an interference matrix of the network topology; selecting a micro base station with the maximum importance degree in the G and allocating a first subframe resource or updating the G to a micro base station group Greturn of the layer recursion transmitted by the upper layer recursion; selecting a secondary important micro base station group Gk; calculating a pair of micro base stations with the minimum same frequency interference in the Gk, and multiplexing the micro base stations under the same subframe resource; taking each base station in the Gk as a clustering center, dividing the remaining base stations which are not allocated with subframe resources into k groups, and taking each group of base stations and the respective clustering center base station as a next layer of incoming Greturn; and performing divide-and-conquer recursion on the step 3 to the step 6 until a rollback condition is met, and ending when all divide-and-conquer search branch rollback is completed. According to the invention, efficient and reasonable allocation of time domain subframe resources of the micro base station associated with the same macro base station in a 5G ultra-dense scene can be realized.

Description

technical field [0001] The invention relates to the technical field of wireless communication networks, in particular to a method for coordinating interference between ultra-dense micro base stations based on a divide-and-conquer recursive strategy. Background technique [0002] In recent years, the key technologies of 5G networks have gradually moved from technical demonstration to engineering implementation in recent years. Unlike 4G networks, millimeter wave technology is deployed on a large scale. Due to the short wavelength of millimeter wave and its susceptibility to interference, ultra-dense networking and multiple Layer heterogeneous networking has become an important networking method for 5G networks. In ultra-dense networking, due to the dense deployment of micro base stations, there may be very serious interference between adjacent micro base stations, resulting in a decrease in signal quality and an increase in packet loss rate, thereby reducing the service quali...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an interference coordination method between ultra-dense micro-base stations based on a divide-and-conquer recursive strategy. The problem of high time complexity and low systematic global optimization ability ensures the efficient and reasonable allocation of time-domain subframe resources of the micro base station

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