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Cluster-based cooperative communication method and device in cellular network

A cellular network and cooperative communication technology, which is applied in the field of cluster-based cooperative communication methods and devices, can solve the problems of consuming cell base station computing resources, high computational complexity, and low efficiency, so as to reduce inter-cell interference, enhance signal, The effect of increasing the transmission rate

Active Publication Date: 2015-04-08
TSINGHUA UNIV
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Problems solved by technology

The exhaustive search algorithm can get the theoretical optimal solution, but the computational complexity is too high, it will consume a lot of computing resources of the base station of the cell, it cannot adapt to the change of the channel state in real time, and the efficiency is low

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  • Cluster-based cooperative communication method and device in cellular network
  • Cluster-based cooperative communication method and device in cellular network
  • Cluster-based cooperative communication method and device in cellular network

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Embodiment Construction

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0044] figure 1 It shows a schematic flowchart of a cluster-based cooperative communication method in a cellular network provided by an embodiment of the present invention. The method is a clustering method for all base stations when the cluster size is 2, such as figure 2 As shown, the cluster-based cooperative communication method in the cellu...

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Abstract

The invention provides a cluster-based cooperative communication method and device in a cellular network. The method includes: calculating the theoretical maximum communication rate of a cluster, formed by every two base stations, performing cooperative communication according to the communication signals of each base station in the cellular network and all user equipment, and using all the base stations as nodes and the maximum communication rate as the edge weight among the nodes to build a complete graph; using a maximum graph matching algorithm on the complete graph to acquire the optimal cluster, with the cluster size being 2, in the complete graph, wherein the optimal cluster is the matched optimal division between every two base stations; performing MIMO cooperative communication between every two base stations according to the optimal division. The method has the advantages that an optimal cell cluster scheme can be selected, signals in a cluster cell can be enhanced, interference among cells in the cellular network is lowered, and data transmission rate is increased.

Description

technical field [0001] The invention relates to the technical field of cellular communication, in particular to a cluster-based cooperative communication method and device in a cellular network. Background technique [0002] In the existing cellular communication network, in order to increase the number of served users and the rate of data communication, technologies such as increasing the transmit power of the base station and high-order frequency multiplexing are adopted, resulting in serious inter-cell interference problems. With the increasing density of cellular base stations, the inter-cell interference problem has even surpassed other noise interference problems and has become the main problem that inhibits the rate increase of the cellular communication system. The problem of inter-cell interference cannot be overcome by conventional methods such as increasing the number of base stations and increasing the transmission power of base stations, which will lead to a dec...

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Application Information

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IPC IPC(8): H04W24/02
CPCH04B7/0452H04W24/02
Inventor 葛宁叶南阳冯伟
Owner TSINGHUA UNIV
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