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Method and device for regulating in multiple-input multiple-output mode

A multi-output, multi-input technology, applied in the field of communication, can solve the problems of insufficient consideration of suitable scenarios, inability to guarantee service quality, and high computational complexity, so as to reduce computational complexity, overcome system delay increases, and overcome computational complexity. high degree of effect

Inactive Publication Date: 2010-06-16
ZTE CORP
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Problems solved by technology

This method is simpler to calculate than the first method, but it does not fully consider the suitable scenarios of different transmission modes, and cannot guarantee the Quality of Service (QoS for short), and channel estimation and targeting at the transmission mode selection are required. The calculation of different modulation and coding methods has high computational complexity, and thus increases the system delay

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  • Method and device for regulating in multiple-input multiple-output mode
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  • Method and device for regulating in multiple-input multiple-output mode

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Embodiment Construction

[0019] Function as stated

[0020] As mentioned above, there are problems of high computational complexity and increased system delay in the current process of adjusting the MIMO mode. According to the principle of the Doppler effect, the moving speed of the terminal has a relatively obvious impact on the transmission characteristics of the channel. For a terminal moving at a high speed, the Doppler shift is large, and the time-varying characteristics of the channel are strong, and the accuracy of channel estimation It is poor, and it is difficult to track its channel characteristics; for low-speed mobile terminals, it is less affected by the Doppler effect, its channel estimation accuracy is high, and its channel characteristics are relatively stable. Therefore, in the technical solution provided by the embodiment of the present invention, it is considered to use the mobile speed of the terminal to adjust the MIMO mode, specifically, set the upper / lower threshold value accord...

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Abstract

The invention provides a method and a device for regulating in multiple-input multiple-output mode. The method comprises the steps of: presetting a first threshold and a second threshold which is less than the first threshold, acquiring a moving speed parameter of a terminal, comparing the moving speed parameter with the first threshold and the second threshold, and regulating a multiple-input multiple-output mode according to a compared result. The invention overcomes the problem of the prior art that the calculation is complex and the system delay is increased during the process of regulating the terminal in the multiple-input multiple-output mode, and compared with the prior art, the invention decreases the system overhead and delay and calculation complexity.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for adjusting a multiple-input multiple-output mode. Background technique [0002] Multiple-Input Multiple-Output (MIMO for short) technology refers to using multiple transmitting antennas and receiving antennas at the transmitting end and receiving end respectively, and signals are transmitted and received through multiple antennas at the transmitting end and receiving end. Technology improves the quality of service for each user, for example, by reducing the bit error rate or increasing the data rate. Multiple-Input Single-Output (MISO for short) mode and Single-Input Multiple-Output (Single-Input Multiple-Output, SIMO for short) mode based on transmit diversity and receive diversity are also part of the MIMO technology. [0003] The MIMO system can improve system performance without increasing system bandwidth, and to a certain extent can resist multipat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L1/00H04L25/03H04B7/0413
Inventor 梁枫李峰赵楠朱常青彭爱华王斌杨瑾张晨晨李岩
Owner ZTE CORP
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