Heterogeneous cellular network resource allocation method based on multi-channel heuristic clustering

Abstract

The invention discloses a heterogeneous cellular network resource allocation method based on multi-channel heuristic clustering. In the clustering process, the method allows one home base station to join multiple clusters and perform joint channel allocation with macro users so as to enable the home base station to acquire multiple channels, then a non-cooperative game model is built for the transmitting power of home base stations on each channel in a two-layer network, and a defined utility function not only considers the utility of home users, but also considers interference for the home users and the macro users. The heterogeneous cellular network resource allocation method comprises the steps of firstly building a directed interference graph for a home base station network, enabling home base stations to join multiple clusters according to a multi-channel heuristic clustering algorithm, then allocating channels for the macro users, matching with the clusters, and sharing the channels; and then establishing a game of the transmitting power of each channel of the home base stations, and acquiring an optimal power set at balance through multiple times of iteration, wherein the home base stations adjust the transmitting power according to the set.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a heterogeneous cellular network resource allocation method based on multi-channel heuristic clustering. Background technique [0002] Spectrum resources in a wireless communication system are limited. In order to serve as many users as possible, a base station allocates the same spectrum resources to many users. This method can make full use of spectrum resources, but introduces interference between users using the same spectrum. When the user receives too much interference, it will cause errors in the transmission information and even cause communication interruption. Therefore, it is necessary to reduce the interference between users through reasonable resource allocation. In a hierarchical heterogeneous network, the home base station network and the macro cell provide wireless communication services for users within the coverage area at the same time. In order to reduce ...

AI Technical Summary

Problems solved by technology

However, this algorithm only allocates one channel for the home base station, which cannot meet the requirements of multiple users of the home base station, and the spectrum utilization rate is not high enough

At the same time, there are few researches on the power control on the Femtocell channel in the existing research, and most of them only consider the case of one home user per Femtocell

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