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Communication method, base station, and communication system used for massive MIMO

A technology of large-scale antennas and communication methods, which is applied in the field of base stations, communication systems, and large-scale antenna communication methods. It can solve the problems of affecting the performance gain of large-scale antennas and the linear increase of reference signal overhead, so as to 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, base station, and communication system used for massive MIMO
  • Communication method, base station, and communication system used for massive MIMO
  • Communication method, base station, and communication system used for massive MIMO

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Embodiment Construction

[0035] 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.

[0036] Refer below Figure 1A A communication method for a large-scale antenna according to an embodiment of the present invention is described.

[0037] Figure 1A It is a flowchart of an embodiment of the communication method for large-scale antennas of the present invention. Such as Figure 1A Sh...

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Abstract

The invention discloses a communication method, a base station, and a communication system used for massive MIMO. The communication method comprises: the base station performs beam forming by employing massive MIMO to form a plurality of beams; and the base station sends channel state information reference signals CSI-RS through the beams after beam forming, and the channel state information reference signals are multiplexed between different beams. According to the method, the base station, and the system, time frequency resources occupied by the channel state information reference signals are reduced, and the cost of the channel state information reference signals is lowered.

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): H04L1/00H04B7/06
CPCH04B7/0617H04L1/0026
Inventor 朱剑驰佘小明陈鹏杨峰义毕奇
Owner CHINA TELECOM CORP LTD
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