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Communication method for large-scale antenna, base station and communication system

A large-scale antenna and communication method technology, which is applied in the field of base stations and communication systems, large-scale antenna communication methods, can solve the problems of linear increase in reference signal overhead and affect the performance gain of large-scale antennas, and reduce overhead and time. The effect of video resources

Inactive Publication Date: 2017-03-01
CHINA TELECOM CORP LTD
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Problems solved by technology

[0004] If the method of obtaining downlink channel information of the above-mentioned FDD system is directly applied to large-scale antennas, there will be the following problems in the large-scale antenna system based on FDD: As the number of antennas increases, the overhead of reference signals increases linearly, thus affecting large-scale antennas. Performance Gains from Scale Antennas

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  • Communication method for large-scale antenna, base station and communication system
  • Communication method for large-scale antenna, base station and communication system
  • Communication method for large-scale antenna, base station and communication system

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] Refer below figure 1 A communication method for a large-scale antenna according to an embodiment of the present invention is described.

[0033] figure 1 It is a flowchart of an embodiment of the communication method for large-scale antennas of the present invention. Such as figure 1 Shown...

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Abstract

The present invention discloses a communication method for a large-scale antenna, a base station and a communication system. The communication method includes the following steps that: a base station performs beamforming by using the large-scale antenna so as to form a plurality of beams; and the base station transmits common reference signals through the formed beams, wherein the common reference signals can be multiplexed between different beams. With the communication method adopted, time-frequency resources occupied by the common reference signals can be decreased, and the overhead of the common reference signals can be reduced.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a communication method, a base station and a communication system for a large-scale antenna. Background technique [0002] At present, researches on massive antenna (Massive MIMO) technology are extensively carried out in the industry to meet the needs of future network development. [0003] The large-scale antenna system based on TDD can obtain the downlink channel information by using the uplink and downlink reciprocity, but the FDD system cannot use the uplink and downlink reciprocity. In the FDD system, the base station acquires downlink channel information in the following ways: first, the base station sends downlink pilots, that is, reference signals; then, the user measures the reference signals, selects a codebook that matches the channel, and feeds it back to the base station. [0004] If the method of obtaining downlink channel information of the above-m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B7/06H04L5/00
CPCH04B7/0413H04B7/0617H04L5/0048
Inventor 朱剑驰佘小明陈鹏杨峰义毕奇
Owner CHINA TELECOM CORP LTD
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