Method for controlling power for a mobile communications terminal

A technology for transmitting equipment and transmitting power, which is applied in the directions of energy-saving ICT, control of amplification, components of amplification devices, etc., can solve problems such as limiting talk time, and achieve the effect of improving talk time

Inactive Publication Date: 2006-03-08
SIEMENS AG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the talk time is also strongly limited in the case of mobile phones

Method used

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  • Method for controlling power for a mobile communications terminal
  • Method for controlling power for a mobile communications terminal
  • Method for controlling power for a mobile communications terminal

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0028] Figure 1a The variation of the rechargeable battery voltage as a function of time is shown, which is manifested during operation of a mobile communication transmitting device according to the prior art. Starting from the maximum voltage U_nenn, the rechargeable battery voltage drops over time, even without signaling, as shown in variation segment 1. If a signal is sent, a voltage disturbance ΔU1 occurs as explained at the outset. This voltage disturbance ΔU1 is associated with a specific transmit power P. If the rechargeable battery voltage reaches a predetermined voltage value U_nenn, eg given as U_nenn×x * , where the factor x=0.85 or 0.9, the transmit power P is reduced to P_reduc_spec, which results in a reduced voltage disturbance ΔU2. After that, the voltage disturbance ΔU2 remains constant. If the operating voltage during transmission, ie the rechargeable battery voltage after deducting the voltage disturbance ΔU2, is lower than the predetermined switch-off v...

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Abstract

The invention relates to a method for controlling power for a mobile communications terminal, which comprises a battery with a time-dependent battery voltage and comprises a power amplifier. The invention provides that before the transmission of a signal, the battery voltage is determined by a control and testing unit and is compared to a predetermined upper threshold voltage U nominal*. The signal is transmitted with a predetermined transmit power while creating a voltage dip Delta U1, which is correlated with the predetermined transmit power, when the battery voltage is greater than the upper threshold voltage U nominal*. The signal is transmitted with a reduced transmit power while creating a voltage dip Delta U2, which is correlated with the reduced transmit power, when the battery voltage is less than or equal to the upper threshold voltage U nominal*. The reduced transmit power is selected in such a manner that the battery voltage minus the voltage dip Delta U2, which is correlated with the reduced transmit power, is greater than or equal to a predetermined lower threshold voltage U burst.

Description

technical field [0001] The present invention relates to a method of regulating power for a mobile communication transmitting device, a suitable circuit and a mobile communication transmitting device having the same. Background technique [0002] Mobile communication transmission devices, in particular mobile phones according to the GSM standard, must meet the requirements of the GSM standard TS45005. Mobile communication transmission devices are usually driven by rechargeable batteries. Driven at Annex D 2.2 volts in this specification, the characteristics of which are met in this rechargeable battery type. A rechargeable battery has a maximum battery voltage U_nenn in a fully charged state. In the above specification, it is defined, among other things, before the battery voltage drops to a limited voltage value, such as U_nenn * =0.85 or 0.9×U_nenn, a specific transmit power or performance must be guaranteed. Thus, for example, a signal with a transmit power up to a cer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03G3/00H03G3/30H03F1/02
CPCH03F1/0244Y02B60/50H03G3/007H03F1/0211H04B1/40
Inventor 雅诺什-杰罗尔德·恩德莱恩乔尔格·沃尔布拉赫特
Owner SIEMENS AG
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