Femtocell clustering and macro user scheduling-based interference coordination method in heterogeneous network

Abstract

The invention discloses a femtocell clustering and macro user scheduling-based interference coordination method in heterogeneous network, by utilizing the interference coordination of femtocell clustering and macro user scheduling in the heterogeneous network, a femtocell senses that whether the macro user exists around, and forms a femtocell interference cluster around each macro user, the interference cluster corresponding to the macro user asking for accessing a network reports feedback information to a macro base station through a feedback link, a macro cell selects a group K spare macro users for scheduling according to the feedback information, the macro cell selects (K-1) macro users to transmit data according to channel information of the macro user of the current time slot and informs the interference clusters corresponding to the rest macro users to communicate normally during the time slot, the macro user scheduling is repeated until the whole scheduling is finished. By utilizing the method, the coverage area of the macro cell is guaranteed; compared with the prior art, the method has the advantages that the more efficient frequency spectrum and power utilization rate can be realized.

Description

technical field [0001] The invention belongs to the technical field of wireless communication networks, and in particular relates to an interference coordination method based on femtocell clustering and macro user scheduling in a heterogeneous network. Background technique [0002] With the explosive growth of wireless data volume and the continuous improvement of people's demand for data rate, new requirements are put forward for the deployment and design of wireless cellular networks. Cell splitting can increase network capacity, and small cells appear, especially femtocells (home base stations), which can greatly reduce the distance between the user end and the base station end, thereby reducing path loss. On the other hand, deploying a massive antenna (massive MIMO) at the macro cell end can increase the spatial freedom of the antenna and increase link gain and reliability. The large-scale antenna system can concentrate the radiated energy of the antenna to some specifi...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide an interference coordination method based on femtocell clustering and macro-user scheduling in a heterogeneous network, aiming to solve the problem of small macrocell coverage and complex operation of frequency spectrum and power utilization existing in existing interference avoidance cooperation methods question

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