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A data transmission method and base station

A data transmission method and base station technology, which are applied in the field of large-scale multiple input and multiple output, and can solve problems such as antenna concentration

Active Publication Date: 2021-05-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In a communication system, in order to facilitate phase synchronization and calibration, the antennas on the base station are usually placed on the same Remote Radio Unit (RRU), but with the development of Massive MIMO technology, the number of antennas on the base station It is also increasing from dozens to hundreds. There are too many antennas on the same RRU, and the antennas are too concentrated, which will bring new difficulties that are more and more difficult to overcome: Electromagnetic Compatibility (Electro Magnetic Compatibility, EMC), power supply , heat dissipation, weight, volume, windward side, installation, maintenance, etc. will face serious challenges

Method used

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  • A data transmission method and base station
  • A data transmission method and base station
  • A data transmission method and base station

Examples

Experimental program
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Embodiment 1

[0060] The embodiment of the present invention provides a data transmission method, such as figure 1 As shown, the processing flow of the method of this embodiment includes the following steps:

[0061] Step 101, according to the terminal capability and the correlation between the terminals, determine the terminal matched by each RRU and the final grouping of each terminal.

[0062] In the data transmission method provided by this embodiment, multiple RRUs jointly transmit data to the terminal. Due to the limitation of the terminal capability, that is, the maximum demodulation capability of the terminal, a terminal can only receive the data stream sent by the corresponding number of RRUs. For example, If the terminal has only one receiving antenna, its maximum demodulation capability is only 1 data stream, so the terminal can only receive the data stream sent by one RRU; if the terminal has only n receiving antennas, its maximum demodulation capability is only n data streams,...

Embodiment 2

[0093] The embodiment of the present invention provides a data transmission method, such as figure 2 As shown, the processing flow of the method of this embodiment includes the following steps:

[0094] Step 201. Obtain a group of signal strengths detected by the terminal, where the group of signal strengths is the signal strength corresponding to each RRU.

[0095] In the data transmission method provided by this embodiment, multiple RRUs jointly transmit data to the terminal, and it is necessary to group the terminals within the coverage area of ​​the base station according to the signal strength of the received signal and mutual interference. Here, the base station needs to obtain a set of signal strengths detected by each terminal, and the set of signal strengths is the signal strength corresponding to each RRU.

[0096] In an embodiment of the present invention, the base station obtaining a set of signal strengths detected by the terminal may include: controlling the RRU ...

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Abstract

The embodiment of the present invention discloses a data transmission method, which is applied to a base station with multiple RRUs. The method includes: according to the terminal capability and the correlation between the terminals, determine the terminal matched by each RRU and the final result of each terminal. Grouping; generating a first channel response matrix between the first RRU and the terminals in the first final group, and calculating the first inverse matrix of the first channel response matrix; obtaining the first group sent to the terminals in the first final group data, wherein the data of the terminal that does not match the first RRU in the first set of data is 0; the first set of data is shaped according to the first inverse matrix, and the shaped first set is obtained Data: controlling the first RRU to send the shaped first group of data to each terminal in the first final group. The embodiment of the invention also discloses a base station.

Description

technical field [0001] The present invention relates to Massive Multiple Input Multiple Out (Massive Multiple Input Multiple Out, Massive MIMO) technology, in particular to a data transmission method and a base station. Background technique [0002] Because Massive MIMO technology can greatly improve spectrum efficiency, people attach great importance to Massive MIMO technology, and various researches are also being carried out in full swing around the world. [0003] In a communication system, in order to facilitate phase synchronization and calibration, the antennas on the base station are usually placed on the same Remote Radio Unit (RRU), but with the development of Massive MIMO technology, the number of antennas on the base station It is also increasing from dozens to hundreds. There are too many antennas on the same RRU, and the antennas are too concentrated, which will bring new difficulties that are more and more difficult to overcome: Electromagnetic Compatibility (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/0417H04B7/0426
CPCH04B7/0421H04B7/043H04B7/0617H04B7/0619H04B7/0634H04W88/085H04B7/04
Inventor 陈侃浩
Owner ZTE CORP