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Method and device for power control

A power control and power adjustment technology, which is applied in the field of wireless communication and can solve the problems of communication quality deterioration and insufficient convergence.

Inactive Publication Date: 2014-11-05
SHANGHAI ZTE SOFTWARE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The main purpose of the present invention is to provide a power control method and device to at least solve the problem in the prior art that the power control adopts a fixed step size, which causes insufficient convergence in fast fading channels and leads to deterioration of communication quality. question

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  • Method and device for power control

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Embodiment Construction

[0028] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0029] figure 1 is a flowchart of a power control method according to an embodiment of the present invention. Such as figure 1 As shown, the method of power control includes:

[0030] S102. Set the current power adjustment step size according to the current channel attenuation state and the previous power adjustment step size;

[0031] S104. Use the above-mentioned current power adjustment step size to control the transmit power.

[0032] In the prior art, the power control adopts a fixed step size, which causes insufficient convergence in fast-fading channels, resulting in the deterioration of communication quality. In contrast to the present invention, the current power adjustment step is set ...

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Abstract

A method and device for power control is provided in the present invention, wherein the method for power control includes: setting the present power adjustment step according to the present channel fading state and the previous power adjustment steps; controlling transmission power by using said present power adjustment step. The problem in the prior art that applying fixed step in power control results in lack of convergence in the fast-fading channel leading to deterioration of communication quality is solved by the present invention, which guarantees the communication quality.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular, to a power control method and device. Background technique [0002] Power control algorithms are usually analyzed and studied from two levels. If analyzed from a global level, whether the power control can meet the SIR (Signal to Interference Ratio, Signal to Interference Ratio) requirements of all users. If the power control algorithm convergence and convergence speed are analyzed from the local level, that is, the ability to track channel changes is the focus of power control algorithm research. [0003] In the UMTS (Universal Mobile Telecommunications System, universal mobile communication system) system, the power control of the channel is realized through the reverse link, that is to say, the power control of the uplink is adjusted through the instructions carried in the downlink, such as in TD- In the SCDMA (Time Division-Synchronous Code Division Multiple Acce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/18H04W52/36
CPCH04W52/362
Inventor 胡啸史凡
Owner SHANGHAI ZTE SOFTWARE CO LTD