Interference Coordination Method Based on Femtocell Clustering and Macro User Scheduling in Heterogeneous Networks

Abstract

The invention discloses an interference coordination method based on femtocell clustering and macro user scheduling in a heterogeneous network. By adopting the interference coordination of femtocell clustering and macro user scheduling in the heterogeneous network, the femtocell perceives whether there are macro users around, and in each A femtocell interference cluster is formed around the macro user, and the interference cluster corresponding to the macro user requesting to access the network reports feedback information to the macro base station through the feedback link, and the macro cell selects a group of K candidate macro users for scheduling according to the feedback information, and the macro cell According to the channel information of the macro users in the current time slot, K-1 macro users are selected to transmit data, and the interference cluster corresponding to the remaining macro users is notified to communicate normally in the time slot, and the macro user scheduling is repeated until the entire scheduling is completed. The invention not only ensures the coverage of the macrocell, but also can realize more efficient frequency spectrum and power utilization compared with the prior art.

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 the emergence of small cells, especially femtocells (home base stations), 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 spe...

AI Technical Summary

Problems solved by technology

[0010] 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

Images