LTE (Long Term Evolution) heterogeneous network interference coordination method based on three-dimensional (3D) beam model of active antenna

Abstract

The invention discloses an LTE (Long Term Evolution) heterogeneous network interference coordination method based on a three-dimensional (3D) beam model of an active antenna; in the LTE heterogeneous network covered with the 3D beam of the active antenna, a macrocell is covered with the 3D antenna having internal and external beams; a femtocell covers hotspots by using a traditional omni-directional antenna; a cell is divided into three zones from inside to outside; macro users in the innermost zone are covered with the internal beam, the outermost zone is covered with the external beam and the middle ring-like zone combines the two beams to provide services, so that the interferences can be avoided; with respect to the femtocell in the area, the clustering and multiplexing are performed, so that the total handling capacity of the femtocell users is improved; with respect to users in the microcell, a beam optimization algorithm is provided to adjust the lower inclination angle for the internal and external beams in the cell and distribute the resources; therefore, the handling capacity of the marginal macro users and the total handling capacity of the middle macro users in the cell are improved and the handling capacity of the marginal users is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to an interference coordination method for LTE heterogeneous networks based on an active antenna three-dimensional beam model. Background technique [0002] In the cellular network, it is estimated that 2 / 3 of voice services and more than 90% of data services take place indoors. Therefore, it is becoming increasingly important for mobile operators to provide good indoor coverage for voice, video and high-speed data services. It is under such circumstances that the industry has proposed femtocell technology, also known as home base station technology. Femtocell does not need to be connected to the cellular core network. It has the characteristics of simple installation, free self-configuration, and plug-and-play. It adopts the same frequency networking mode as the existing macro base station. [0003] In the macro cellular network, the introduction of fem...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a LTE heterogeneous network interference coordination method based on an active antenna three-dimensional beam model, using AAS 3D beams for cell coverage, aiming to solve the problem of macro base stations and interference in LTE heterogeneous networks based on AAS 3D beam coverage Cross-layer interference between femtocells and co-channel interference between inner and outer beams

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