An Adaptive Clustering Adjustment Method for Microcellular Multi-antenna System

Abstract

The invention provides a microcellular multi-antenna system adaptive clustering adjusting method. The method comprises steps that the plurality of single-antenna microcellular base stations are managed in a unified manner by using a concentrated control terminal, and the plurality of antennas of the microcellular base stations form the distributed multi-antenna system with the action of the concentrated control terminal; the microcellular base stations in the region are evenly distributed to multiple clusters; each cluster achieves distributed wave beam forming for mobile users in the cluster; the access user number and the signal to noise ratio condition of each cluster obtained by feedback are subjected to statistics; according to the statistics condition, adaptive adjustment of the number of the microcellular base stations in each cluster is carried out, and the emission power is adjusted with the combination of the distributed wave beam forming, so that the communication quality of the mobile users can be ensured; and the concentrated control terminal adjusts the emission power in each cluster, and the inter-cluster interference is reduced under the precondition of meeting the intra-cluster communication. The method reduces the interference of the whole microcellular system while improving the communication quality.

Description

technical field [0001] The invention relates to an adjustment method for self-adaptive clustering of a microcellular multi-antenna system, which belongs to the technical field of communication. Background technique [0002] The advantage of the micro-cell technology is to use the indoor fixed line and the Internet to combine with wireless access, so that the wireless base station of the micro-cell can realize high-speed wireless access to indoor users. At present, the research on microcells mainly focuses on the research on the interconnection protocol, signaling and high-speed packet transmission between microcells and macrocells, and the research on microcell base stations, especially the use of multiple antennas at the microcell base station end. Technical research is very limited. [0003] In terms of theoretical research on microcellular systems, the literature (An Overview of the femtocell concept, Bell LABS TECHNICAL JOURNAL, Article first published online: 15MAY2008...

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Problems solved by technology

Such a setting will cause more interference between multiple microcell base stations

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