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Downlink power allocation and adaptive control method and system

A technology of self-adaptive control and distribution coefficient, applied in power management, wireless communication, electrical components, etc., can solve problems such as cost increase, algorithm complexity, and trouble, and achieve the effect of improving operating efficiency, saving time and hardware resources.

Inactive Publication Date: 2013-09-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This not only brings a lot of complexity to the algorithm, but also brings troubles in the implementation, resulting in an increase in cost and a waste of resources.

Method used

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  • Downlink power allocation and adaptive control method and system
  • Downlink power allocation and adaptive control method and system
  • Downlink power allocation and adaptive control method and system

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Embodiment Construction

[0031] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0032] An embodiment of the present invention provides a method for adaptive control of downlink power allocation, including steps:

[0033] The first step: calculate the average power of each different type of signal in the downlink data, and then normalize each calculated average power;

[0034] The second step: according to the base station transmission power and the power allocation ratio of each different type of signal, determine the power to be loaded on each type of sub-carrier signal, and calculate the power allocation coefficient of each type of sub-carrier signal;

[0035] Step 3: Calculate the adaptive control factor according to the average power of the baseband output signal and the power loss of the subsequent modules inside the baseband;

[0036] Specifically: the adaptive control factor G and the subsequent modul...

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Abstract

The invention discloses a downlink power allocation and adaptive control method and a downlink power allocation and adaptive control system. The method comprises the following steps of: calculating the average power of each signal of different types in downlink data, and normalizing the calculated average power; determining power required to be loaded onto sub-carrier signals of each type according to the transmission power of a base station and a power allocation proportion among the signals of the different types, and calculating power allocation coefficients of the sub-carrier signals of each type; calculating an adaptive control factor according to the average power of output signals of a base band and the power consumption of a subsequent module in the base band; multiplying the adaptive control factor by the power allocation coefficients of the sub-carrier signals of each type to obtain power allocation and adaptive control composite factors; and multiplying the power allocation and adaptive control composite factors by the corresponding sub-carrier signals to finish the power allocation and adaptive control. The method and the system combine the power allocation and adaptive control, save time and hardware resources and improve the running efficiency.

Description

technical field [0001] The invention belongs to wireless communication technology, and in particular relates to a method and system for adaptive control of downlink power distribution. Background technique [0002] Downlink power allocation and adaptive control technologies are widely used in various communication systems, including 3G systems and Long Term Evolution (Long Term Evolution, LTE) systems. In short, the downlink power allocation applied in the communication system is to determine the energy or power loaded on different types of subcarriers. In the LTE system, it means to determine the energy loaded on various resource elements (ResourceElement, RE). The purpose of adaptive control is to make the average output power of the downlink data after baseband processing before entering the radio frequency meet certain requirements, so as to facilitate subsequent processing. [0003] In the power allocation module, the base station first obtains the actual transmission ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/14H04W52/22
Inventor 袁红峰熊高才
Owner ZTE CORP