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A beamforming method and system for a multi-user millimeter wave communication system

A technology of beamforming and communication systems, applied in the field of digital information, to achieve low complexity and increase the attainable rate

Inactive Publication Date: 2018-12-28
TSINGHUA UNIV
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Problems solved by technology

[0008] Aiming at the defects existing in the prior art, the present invention proposes a beamforming method and system for a multi-user millimeter wave communication system to solve the problem that in the existing multi-user millimeter wave communication system, the beamforming selection mechanism needs to be relatively complex The problem of improving the reachable rate of the user end where beam collision occurs

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  • A beamforming method and system for a multi-user millimeter wave communication system

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[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure.

[0054] like image 3 As shown, an embodiment of the present disclosure provides a beamforming method for a multi-user millimeter wave communication system, and the method includes the following steps S1 to S4:

[0055] S1. Perform beamforming training on the user terminal according to a preset beamforming training algorithm, and obtain a beamforming training result;

[0056] Specifically, the preset beamforming training algorithm in step S1 ...

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Abstract

The invention belongs to the technical field of digital information, and provides a beam forming method and system for a multi-user millimetre-wave communication system. The beam forming method comprises the following steps of: performing beam forming training of a user side according to a preset beam forming training algorithm so as to obtain a beam forming training result; according to the beam forming training result, judging whether a conflict user side exists or not, wherein the conflict user side is a user side for downlink sending of a beam forming vector by adopting the same base station side; if so, selecting a beam forming vector pair to be subjected to downlink sending / receiving for the conflict user side so as to obtain a beam forming vector index to be subjected to downlink receiving of the conflict user side; and sending the beam forming vector index to be subjected to downlink receiving of the conflict user side to the conflict user side, such that the conflict user side searches the corresponding beam forming vector to be subjected to downlink receiving according to the received index. A conflict judging process is added into the traditional beam forming mechanism; therefore, the beam forming vector is re-selected for the conflict user side; and thus, the achievable rate of the conflict user side in the traditional beam forming training method is increased.

Description

technical field [0001] The invention relates to the technical field of digital information, in particular to a beamforming method and system of a multi-user millimeter wave communication system. Background technique [0002] In recent years, as millimeter wave (Millimeter Wave) technology and massive multiple-input multiple-output (Massive Multi-Input Multi-Output, MIMO) technology are considered to be part of the key technologies of 5G in the future, they have attracted widespread attention from academia and industry. . The mmWave frequency band has a large amount of available spectrum resources, which can meet the growing business traffic demands of mobile communications. In addition, due to the short wavelength of the millimeter wave, according to the antenna theory, the antenna size of the millimeter wave system is also small, so that hundreds or even thousands of antennas can be placed in a small space, which is more conducive to the application of large-scale antenna ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/08
CPCH04B7/0617H04B7/0626H04B7/0695H04B7/086H04B7/088
Inventor 赵培尧王昭诚
Owner TSINGHUA UNIV
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