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Method, system and device for switching multiple input/multiple output (MIMO) transmission modes

A transmission mode, multi-output technology, applied in transmission systems, digital transmission systems, and error prevention/detection using return channels, which can solve problems such as unintelligent switching, small system capacity, and low transmission efficiency.

Inactive Publication Date: 2011-02-09
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of this, the embodiments of the present invention provide a MIMO mode switching method, system, and device to solve the problem of low transmission efficiency and system capacity in the existing MIMO technology due to unintelligent switching between different modes. small problem

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  • Method, system and device for switching multiple input/multiple output (MIMO) transmission modes
  • Method, system and device for switching multiple input/multiple output (MIMO) transmission modes

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Embodiment Construction

[0032] In the embodiment of the present invention, in order to adopt the corresponding MIMO transmission mode for different channel transmission qualities to improve the transmission efficiency of the system, a method for switching the MIMO transmission mode is provided. The method includes: the base station judges and the terminal is currently performing data transmission The MIMO transmission mode adopted; according to the MIMO transmission mode currently used for data transmission, select a comparison threshold corresponding to the MIMO transmission mode; the base station counts the number of retransmissions with the terminal within the set time length; the said The base station compares the number of retransmissions with the comparison threshold, and determines whether to switch the MIMO transmission mode used for data transmission with the terminal according to the comparison result. In the embodiment of the present invention, different thresholds are set corresponding to ...

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Abstract

The invention discloses a method, a system and a device for switching multiple input / multiple output (MIMO) transmission modes, which are used for solving the problem that switching among different MIMO modes is not intelligent in the prior art. The method of the invention comprises the following steps: a base station judges the MIMO transmission mode adopted for carrying out data transmission currently with a terminal, and selects the corresponding comparison threshold; and the base station counts the times of retransmission, compares the times of retransmission with the comparison threshold, and determines whether to switch the MIMO transmission mode adopted for carrying out data transmission with the terminal according to the comparison result. In the embodiment of the invention, corresponding different thresholds are set corresponding to different MIMO transmission modes, the base station determines to adopt the corresponding MIMO transmission mode for carrying out data transmission with the terminal according to the times of retransmission in a channel for carrying out data transmission with the terminal and the result of comparison with the comparison threshold, and the base station intelligently switches the MIMO transmission modes with the terminal, thereby improving the data transmission efficiency and improving the system capacity.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, system and device for switching multiple input multiple output (Multiple Input Multiple Output, MIMO) transmission modes. Background technique [0002] MIMO technology is one of the key technologies in the physical layer of the Orthogonal Frequency Division Multiple Access (OFDMA) system. It uses multiple antennas for signal transmission to suppress channel fading, which is conducive to improving channel capacity and spectrum utilization. . figure 1 It is a schematic diagram of the structure of data transmission using MIMO technology. In MIMO technology, the sending end encodes the signal source through time and space, and then uses multiple antennas to transmit it. After passing through the wireless channel, the receiving end uses multiple antennas to receive the signal source, and Perform space-time decoding processing to restore the original s...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04W88/08H04L1/06H04L1/00
Inventor 赖世明刘广
Owner ZTE CORP
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