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A Method for Realizing Downlink Coordinated Multipoint Transmission in Heterogeneous Networks

A technology of multi-point transmission and heterogeneous network, applied in the field of realizing downlink cooperative multi-point transmission of heterogeneous network, can solve problems such as poor system performance, and achieve the goal of reducing inter-cell interference, improving spectral efficiency, and improving the average spectral efficiency of cells. Effect

Active Publication Date: 2019-10-22
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for realizing downlink coordinated multi-point transmission in a heterogeneous network, so as to solve the problem in the prior art that only a certain downlink coordinated multi-point transmission mode is used in the case of a large cell load , the problem of poor system performance

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  • A Method for Realizing Downlink Coordinated Multipoint Transmission in Heterogeneous Networks
  • A Method for Realizing Downlink Coordinated Multipoint Transmission in Heterogeneous Networks
  • A Method for Realizing Downlink Coordinated Multipoint Transmission in Heterogeneous Networks

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Embodiment 1

[0053] Such as figure 1 As shown, the method for realizing downlink coordinated multi-point transmission in a heterogeneous network provided by the embodiment of the present invention includes:

[0054] S101, in a heterogeneous network downlink scenario where the base station and the wireless remote end have different cell IDs (unique identifiers), the user selects to access the base station or the wireless remote end according to the received power;

[0055] S102. Divide users accessing the base station or wireless remote end into cooperative users and non-cooperative users according to the broadband signal-to-interference-noise ratio, wherein the broadband signal-to-interference-noise ratio is the power received by the user from the service transmission point and the power received by the user The ratio of the power of the interference emission point to the sum of the noise power;

[0056] S103. Divide the base station and the wireless remote end into a cooperative set, and...

Embodiment 2

[0108] In this embodiment, in order to facilitate the understanding of the method for realizing downlink coordinated multi-point transmission in a heterogeneous network provided in this embodiment and its effect, the method for realizing downlink coordinated multi-point transmission in a heterogeneous network provided in this embodiment is further described in combination with the embodiment. instruction of.

[0109] This embodiment provides a method for realizing downlink CoMP transmission in a heterogeneous network. The downlink scenario of the heterogeneous network describes a downlink scenario in which the base station and the wireless remote end have different IDs. The simulation parameters are shown in Table 1. In this example, with figure 1 The cooperating set formed by the middle sectors 1, 6, 8 and the wireless remotes within their coverage areas is taken as an example for illustration.

[0110] Table 1

[0111] Parameter Description set value Cente...

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Abstract

The invention provides a method for realizing heterogeneous network downlink coordinated multi-points reception. The inter-cell interference can be effectively reduced, the spectral efficiency of cell edge users can be improved, and the average spectral efficiency of cells can be improved. The method comprises the steps that in a heterogeneous network downlink scene that a base station and a wireless far end own different cell IDs, users selectively access the base station or the wireless far end according to received power; the users accessing the base station or the wireless far end are divided into coordinated users and non-coordinated users according to a bandwidth signal to interference plus noise ratio; and the base station and the wireless far end are divided into a coordinated set, and coverage is provided for the coordinated users in the coordinated set through adoption of a joint transmission and coordinated beamforming combined multi-points coordinated reception method. The method relates to the technical field of wireless communication.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for realizing downlink coordinated multi-point transmission of a heterogeneous network. Background technique [0002] In the Long Term Evolution (LTE) system, due to the use of Orthogonal Frequency Division Multiplexing (OFDM) technology, the interference within the cell is generally small, but due to the use of the same frequency networking technology, the interference between cells Become the main interference in the LTE system, resulting in poor cell edge performance. In order to improve the performance of cell edge users and meet the requirements of cell edge spectrum efficiency, Coordinated Multi-Points Reception (CoMP) technology is introduced into the Long Term Evolution-Advanced (LTE-A) system. Coordinated multipoint transmission (CoMP) technology provides services to a cell edge user at the same time through the cooperation of multiple adjacent b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/14H04W16/26H04J11/00
Inventor 陈月云王新哲
Owner UNIV OF SCI & TECH BEIJING
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