Energy-efficient resource distribution and interference alignment combined method in heterogeneous network

Abstract

The invention provides an energy-efficient resource distribution and interference alignment combined method in a heterogeneous network. The energy-efficient resource distribution and interference alignment combined method in the heterogeneous network comprises a first step of setting various parameters of a communication system in the heterogeneous network; a second step of constructing an energy-efficient resource distribution and interference alignment combined optimization problem in the heterogeneous network based on the lowest rate demand of a macro-cell user, the signal intensity of a femto-cell user, the interference intensity of the femto-cell user, the scheduling constraint of a femto-cell base station and a power constraint condition; a third step of carrying out energy-efficient fast femto-cell scheduling and interference alignment algorithm design; and a fourth step of carrying out energy-efficient iteration power distribution. The fast femto-cell scheduling, the interference alignment algorithm design and the optimal power distribution algorithm are carried out for the energy efficiency problem in the heterogeneous network; the communication performance of the macro-cell users and the femto-cell users is guaranteed, and the energy efficiency of the system is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to an energy efficient resource allocation and interference alignment joint method in a heterogeneous network. Background technique [0002] With the exponential growth of mobile data demand, the existing network architecture will not be able to support the increasingly large amount of data. Therefore, the heterogeneous network (Heterogeneous networks, HetNets) architecture is regarded as an important technology to meet the future wireless data demand . In a heterogeneous network, macrocell base stations and some low-power nodes, such as microcells and femtocells, share the same channel. However, the setup of low-power nodes will introduce interference, which will severely degrade the performance of heterogeneous networks. [0003] Interference alignment (Interference alignment, IA) technology can compress the interfering signal into a low space, so as to se...

AI Technical Summary

Problems solved by technology

[0004] In practical wireless communication systems, perfect interference alignment may not be achievable, and the number of users considered is less

Also, no energy efficient studies have been done for systems using interference alignment techniques

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