An Energy Efficient Combined Method of Spectrum Sharing and Base Station Dormancy

Abstract

The invention provides an energy-efficient spectrum sharing and base station sleep combined method, which is used for solving the problems in the prior art that only a single partial spectrum sharing PSR or base station sleep BSS strategy is adopted for improving energy efficiency of a heterogeneous network, and the improvement effect of the energy efficiency of the heterogeneous network by adopting the two kinds of single methods is not obvious. The energy-efficient spectrum sharing and base station sleep combined method provided by the invention comprises the steps of: determining a spectrum reuse factor beta of a micro base station layer which minimizes energy loss of the whole system; and determining optimal active probability ratios gamma, which maximize coverage probability of a macro base station layer and the micro base station layer simultaneously, of the macro base station layer and the micro base station layer according to the spectrum reuse factor beta of the micro base station layer. The energy-efficient spectrum sharing and base station sleep combined method optimizes the PSR coefficient beta, and combines the active probability ratios of a macro base station and a micro base station with the PSR coefficient beta, so that the coverage probability and energy efficiency of the macro base station layer and the micro base station layer are maximized under the condition of a given threshold value of signal to interference and noise ratio.

Description

technical field [0001] In the field of communication, the present invention particularly refers to an energy-efficient combined method of spectrum sharing and base station dormancy. Background technique [0002] As users' demand for transmission data rate increases, traditional communication networks have been unable to provide seamless coverage and rapidly increasing throughput. Two-layer heterogeneous network, that is, the coexistence of macro cells and micro cells, has become one of the potential technologies to solve the above problems. In heterogeneous networks (Heterogeneous Networks, HetNets), micro cells are composed of devices with low power consumption, which can help traditional macro cells to increase the capacity of the network, thereby improving energy efficiency. [0003] Nevertheless, the energy loss problem is still an important issue in the future research of heterogeneous networks. How to use the limited wireless spectrum to solve the problem of energy e...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the existing spectrum sharing or base station dormancy strategy can only optimize the wireless resources of the two-layer heterogeneous network from one aspect, the present invention provides an energy-efficient joint method of spectrum sharing and base station dormancy, which combines Based on the advantages of the two technologies of partial spectrum reuse and base station dormancy, a joint optimization method that can reduce internal interference and improve energy efficiency in the future heterogeneous network is proposed. By optimizing the PSR coefficient and the active probability ratio of the base station, Maximize the coverage probability and energy efficiency of the macro base station layer and the micro base station layer under a given SINR threshold

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