Non-codebook precoding MIMO transmission method and base station

A transmission method and precoding technology, which is applied in the field of non-codebook precoding MIMO transmission method and base station, can solve the problem of single stream transmission, achieve the effect of improving transmission speed and system performance

Active Publication Date: 2010-06-16
ZTE CORP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the present invention provides a non-codebook precoding MIMO transmission method and base station to solve the problem in the prior art that the non-codebook precoding MIMO method can only transmit a single stream in the TDD LTE system

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  • Non-codebook precoding MIMO transmission method and base station
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  • Non-codebook precoding MIMO transmission method and base station

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Embodiment Construction

[0019] Functional Overview

[0020] Only when the codebook feedback-based precoding method transmits 4 streams, 4 sets of cell-specific reference signals are required. If the non-codebook precoding method in TDD mode is used, the transmission and reception processing of MIMO links does not require cell-specific reference signals. , and only one set of cell-specific reference signals is needed for terminal measurement. Therefore, the embodiment of the present invention improves the existing TDD LTE MIMO scheme and provides a non-codebook precoding MIMO transmission scheme. In this scheme In the downlink reference signal of non-codebook precoded MIMO multi-stream transmission, one cell-specific reference signal and four groups of user-specific reference signals are set, so that multi-stream beamforming can be realized.

[0021] In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0022] The...

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Abstract

The invention discloses a non-codebook precoding MIMO transmission method and base station. In the method, a base station receives a notice from a terminal, wherein the notice is used for identifying that a terminal supports non-codebook precoding MIMO; the base station determines to carry out non-codebook precoding MIMO multi-stream transmission on the terminal according to the notice and notifies the terminal, wherein the downlink reference signal of the non-codebook precoding MIMO multi-stream transmission comprises a group of cell special reference signals and four groups of user special reference signals. According to the technical scheme provided by the invention, a group of cell special reference signals and four groups of user special reference signals are set by non-codebook precoding MIMO multi-stream transmission, and multi-stream wave beam forming can be realized, thus improving transmission speed and improving system performance.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a non-codebook precoded Multiple-Input Multiple-Output (Multiple-Input Multiple-Output, MIMO for short) transmission method and a base station in a Time Division Duplex-Long Term Evolution system. Background technique [0002] In order to provide higher-rate packet services and improve spectrum utilization efficiency, the long-term evolution was further developed on the basis of the third generation mobile communication (3rd Generation Partnership Project, referred to as 3GPP), and finally formed the long-term evolution beyond the third generation (Long Time Evolution, Referred to as LTE) mobile communication system. [0003] The core basis of signal processing in the physical layer of the LTE system is Orthogonal Frequency Division Multiplexing (OFDM for short) technology and MIMO technology. Antennas use multiple airspace orthogonal sub-channels for multip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04L1/06
Inventor 耿鹏江海秦洪峰江溯
Owner ZTE CORP
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