Method and device for determining three-dimensional beam pre-coding information

A technology of precoding information and three-dimensional beams, which is applied in the field of determining methods and devices for three-dimensional beam precoding information, and can solve problems such as increasing terminal complexity and high system resource overhead

Active Publication Date: 2016-02-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above solution, on the one hand, will lead to higher system resource overhead, on the other hand, it will increase the complexity of the terminal

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  • Method and device for determining three-dimensional beam pre-coding information
  • Method and device for determining three-dimensional beam pre-coding information
  • Method and device for determining three-dimensional beam pre-coding information

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Embodiment Construction

[0130] In order to make the purpose, technical solutions and beneficial effects of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0131] Such as figure 1 As shown, a schematic diagram of a system architecture applicable to the embodiment of the present invention. The system architecture includes a network device 101 and at least one terminal 102; wherein, the network device may be a base station, and the terminal may be a terminal with a wireless communication function, such as a mobile phone.

[0132] The network device 101 may send a pilot to the terminal 102, and perform beamforming on the antenna according to the information fed back by the terminal 102.

[0133] The pilot frequency may be used...

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Abstract

The embodiment of the invention relates to the field of wireless communication, and in particular relates to a method and device for determining three-dimensional beam pre-coding information, used for performing three-dimensional beam forming. In the embodiment of the invention, network equipment determines an optimal first beam forming vector at first; then, an optimal second beam forming vector is determined from a second beam forming vector set corresponding to the optimal first beam forming vector; and channel measurement is carried out through a formed pilot frequency, such that optimal pre-coding information in the second dimension is determined. The optimal beam forming vector is determined from the beam forming vector set based on the coarse granularity at first; then, the optimal beam forming vector is determined from the beam forming vector set based on the fine granularity; therefore, the purpose of determining the optimal fine-granularity beam forming vector and the optimal pre-coding information can be achieved without measuring all fine-granularity beam forming vectors; compared with the prior art, the system resource cost is reduced; and thus, the complexity of the terminal is reduced.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for determining three-dimensional beam precoding information. Background technique [0002] In existing cellular systems, base station antenna arrays are generally arranged horizontally. The beam at the transmitting end of the base station can only be adjusted in the horizontal direction, while the vertical direction has a fixed downtilt angle for each terminal. Therefore, various beamforming / precoding technologies are based on horizontal channels. Since the wireless signal propagates three-dimensionally in space, the method of fixing the downtilt angle cannot optimize the performance of the system, so the beam adjustment in the vertical direction is of great significance to the improvement of the system performance. With the development of antenna technology, active antennas that can independently control each element have appeared in the indust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L1/06
CPCH04B7/0617H04B7/0639H04B7/0695H04B7/04H04L1/06H04B7/0626H04B17/327H04L5/0048H04W24/02
Inventor 李辉
Owner DATANG MOBILE COMM EQUIP CO LTD
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