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Method and arrangement for setting the transmission power of a mobile communication device

A technology of mobile communication equipment and transmitting power, applied in the field of UMTS system

Active Publication Date: 2011-01-26
TESSERA ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With conventional analog amplifiers, this accuracy can at best be ensured through complex and expensive circuitry and complex and expensive calibration procedures, and only over a limited temperature range

Method used

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  • Method and arrangement for setting the transmission power of a mobile communication device
  • Method and arrangement for setting the transmission power of a mobile communication device
  • Method and arrangement for setting the transmission power of a mobile communication device

Examples

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Embodiment Construction

[0018] The overall gain required for the transmit power required at the time is divided between the digital amplifier 8 and the analog amplifier / amplifier group 4 via the control circuit 5 .

[0019] In order to optimize the signal-to-noise ratio of the transmitted signal applied to the antenna 7, a major part of the overall gain is allocated to the digital amplifier 8, and the dynamic range of the digital-to-analog converter 2 is utilized to the greatest possible extent. Setting the gain factor as low as possible on the analog amplifier 4 or set of analog amplifiers 4, the sum of the levels of digital and analog gain produces exactly the desired level of transmit power required by the base station 12 at the time. In this case the control circuit 5 controls the digital amplifier 8 in such a way that the signal I 1 and Q 1 to allow a relatively low analog gain in the analog amplifier or amplifier bank 4, sufficient to allow the required transmit power to be achieved. In this ...

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PUM

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Abstract

In a method for setting the transmitted power of a mobile communication device, particularly for a UMTS, a transmitted power that is being asked for at the time is to be set with great accuracy and a good signal-to-noise ratio. The digital signals I, A difference between a measurement of the transmitted power of the signal that is applied to the output antenna (7) and a sequel that is a desired value for transimitted power according to power commands from the base station (12), in such a way that they together produce the desired transmitted power.

Description

technical field [0001] The present invention relates to a method and a device for setting the transmission power of a mobile communication device, especially for a UMTS (Universal Mobile Telecommunications System) system. Background technique [0002] In mobile communication systems, especially in UMTS systems, it is required to set the transmission power of mobile communication equipment very accurately. The base station of a mobile communication system typically dictates how much power a mobile communication device should transmit at any given time. In the UMTS system, a relative accuracy of ±0.5dB is specified for the transmitted power. [0003] With conventional analog amplifiers, this accuracy can only be ensured at best, and only over a limited temperature range, through complex and expensive circuitry and complex and expensive calibration procedures. Contents of the invention [0004] The object of the present invention is to specify a method and a device of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005H03G3/30
CPCH04W52/08H04W52/52
Inventor G·伦策R·布尔登斯基H·卡尔费拉姆
Owner TESSERA ADVANCED TECH
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