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Method and device for indicating and determining beam information, and communication system

A beam information and pointing device technology, applied in the field of communication, can solve the problems of high beam information overhead and low efficiency, and achieve the effect of reducing system overhead

Active Publication Date: 2019-08-02
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a system using a large-scale antenna array, the number of beams may reach 256, 1024 or more, and an indication of beam information requires 8 bits, 10 bits, or even more. Therefore, the overhead of beam information indication process large, inefficient

Method used

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  • Method and device for indicating and determining beam information, and communication system
  • Method and device for indicating and determining beam information, and communication system
  • Method and device for indicating and determining beam information, and communication system

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Embodiment Construction

[0071] In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0072] Before data transmission, in order for the receiving end to reasonably set the receiving beam, the sending end needs to notify the sending beam related information of the data channel or control channel (Demodulation Reference Signal (DMRS) of the data or control channel) Receiving end. One notification method is to pass the quasi-co-located (QCL) hypothesis to the receiving end, that is, to indicate the receiving end's data or control channel DMRS port and whic...

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Abstract

The present application discloses a method and device for indicating and determining beam information, and a communication system, so as to reduce the overhead of transmitting beam information between a sending end and a receiving end. A method for indicating beam information provided by the present application includes: the sending end determines the first sending beam to be used for transmission with the receiving end; The mapping relationship is to determine the first BPL identifier corresponding to the first sending beam; wherein, the receiving end has a second mapping relationship between the BPL identifier and the receiving beam; the sending end sends the first BPL identifier to The receiving end; the sending end sends a signal to the receiving end by using the first sending beam.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a method and device for indicating and determining beam information, and a communication system. Background technique [0002] At present, in order to further improve the MIMO (Multiple Input Multiple Output) technology, a large-scale antenna technology is introduced into the mobile communication system. For base stations, large-scale antenna arrays can have up to 512 or even 1024 antenna elements. When an all-digital antenna is used, each antenna element is connected to a transceiver unit (TXRU), and there will be up to 512 or even 1024 TXRUs at this time. For terminals, antenna arrays up to 32 / 64 antenna elements can also be configured. The use of beamforming on both sides of the base station and the terminal can obtain a huge beamforming gain to compensate for signal attenuation caused by path loss. In particular, the path loss of high-frequency communic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/08H04W72/04H04W72/08
CPCH04B7/0695H04B7/088H04W72/046H04W72/21H04W72/542H04W72/23H04B7/0408
Inventor 陈山枝孙韶辉高秋彬
Owner DATANG MOBILE COMM EQUIP CO LTD