Dynamic clustering-based sub-band allocation method in femtocell network

Abstract

The invention relates to the field of wireless resource management in mobile communication and provides a dynamic clustering-based sub-band allocation method in a femtocell network. The method comprises the following steps of: enabling each user to measure the interference of each base station on the user, calculating a gateway of the femtocell network, calculating interference weights and generating a weighted interference pattern; clustering family base stations in the network according to the density of the family base stations and user service quality requirements, as well as a principle that the base stations with serious mutual interference are divided into the different clusters, so as to form a virtual cell, wherein the interference among femtocells can be effectively reduced; and then sequentially allocating sub-bands corresponding to the maximum throughout capacity of all the clusters to all the clusters, ensuring the mutual orthogonality of the sub-bands among the clusters and further improving the network throughout capacity. In addition, the construction of the virtual cell in the method disclosed by the invention can effectively reduce the complexity in network management and system operation cost, and is particularly suitable for the situations with dense arrangement of the family base stations in the network.

Description

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AI Technical Summary

Benefits of technology

This technology helps reduce interference among femto cell networks by grouping them together within smaller areas called small groups (small zones) where there may have more overlap). These small groupings allow for better resource allocation and improved data transmission speed without increasing signalling load over larger ones. Additionally, this technique allows for efficient use of resources across both indoor/outdoor environments and outdoors while also optimizing wireless communication performance at any given location.

Problems solved by technology

This patent describes two technical features: one relates to improving the reception of radio waves while reducing signal losses during urban areas due to increased usage of broadband networks like 3.0GHz Wireless Networks; another involves deploying Home Base Stations (HBS), where multiple devices may communicate without any limitations. These HBS technologies aimed towards solving these issues but they require expensive infrastructure resources and result in lower efficiency than what was previously possible because there were no known locations and numbers of HeBs available within the range of millimetric wave frequencies.

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