KR20030058785A - Method for compensation of transmission power of mobile communication terminal - Google Patents

Method for compensation of transmission power of mobile communication terminal Download PDF

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Publication number
KR20030058785A
KR20030058785A KR1020010089319A KR20010089319A KR20030058785A KR 20030058785 A KR20030058785 A KR 20030058785A KR 1020010089319 A KR1020010089319 A KR 1020010089319A KR 20010089319 A KR20010089319 A KR 20010089319A KR 20030058785 A KR20030058785 A KR 20030058785A
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South Korea
Prior art keywords
temperature
channel
power
transmission power
mobile communication
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KR1020010089319A
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Korean (ko)
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김종호
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엘지전자 주식회사
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Priority to KR1020010089319A priority Critical patent/KR20030058785A/en
Publication of KR20030058785A publication Critical patent/KR20030058785A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC

Abstract

PURPOSE: A transmission power compensating method of a mobile communication terminal is provided to minimize a deflection of transmitter powers of each channel even at a high temperature or a low temperature by compensating transmission powers according to a temperature. CONSTITUTION: A mobile terminal senses a temperature change and compensates a power by using a measuring unit and a first compensation value so that it can be an average transmission power according to a channel frequency at a room temperature. At a high temperature, a power is compensated using the measuring unit and a second compensation value so that it can be an average transmission power according to a channel frequency by the temperature change. At a lower temperature, a power is compensated using the measuring unit and a third compensation value so that it can be an average transmission power according to a channel frequency by the temperature change.

Description

이동통신 단말기의 송신전력 보상방법{METHOD FOR COMPENSATION OF TRANSMISSION POWER OF MOBILE COMMUNICATION TERMINAL}Compensation method of transmission power of mobile communication terminal {METHOD FOR COMPENSATION OF TRANSMISSION POWER OF MOBILE COMMUNICATION TERMINAL}

본 발명은 이동통신 단말기의 송신전력 보상방법에 관한 것으로, 특히 온도에 따른 채널별 송신전력 편차를 보상하여 상온뿐만 아니라 고온이나 저온에서도 채널별 송신부 전력의 편차를 최소화할 수 있도록 한 이동통신 단말기의 송신전력 보상방법에 관한 것이다.The present invention relates to a method for compensating transmission power of a mobile communication terminal, and more particularly, to compensate for a variation in transmission power for each channel according to temperature, thereby minimizing the variation in power of a transmission unit for each channel at high or low temperatures as well as at room temperature. The present invention relates to a transmission power compensation method.

일반적으로, 이동통신 단말기의 전력편차 보상부는 송신과정에서 발생하는 전력편차를 최소화하기 위해 온도에 따라 발생하는 채널별 송신부 전력 오차를 보상하여 그 송신부 전력 편차를 최소화 하는 것으로, 이와 같은 종래의 기술을 도면을 참조하여 설명하면 다음과 같다.In general, the power deviation compensator of the mobile communication terminal compensates for power error of the transmitter for each channel generated according to temperature in order to minimize the power deviation generated during the transmission process, thereby minimizing the transmitter power deviation. A description with reference to the drawings is as follows.

도 1의 (a),(b)는 종래의 이동통신 단말기의 송신전력 보상방법이 적용되는 상온에서의 송신부 채널별 전력특성 파형도 및 테이블로서, 이에 도시한 바와 같이 (a)는 이동통신 단말기의 전력 측정 계측기와 전력 측정 계측기를 제어할 수 있는 프로그램을 이용하여 상온에서 이동통신 단말기 송신부 채널(주파수)별 전력특성을 나타낸 것이며, (b)는 250채널 17dBm을 기준으로 했을때 250채널의전력에 대한 각각의 채널 보상치를 나타낸 것으로, 종래의 CDMA채널별 전력보상방법을 나타낸 것이다.(A) and (b) of FIG. 1 are waveform diagrams and tables of power characteristics for each channel of a transmitter at room temperature to which a conventional transmission power compensation method of a mobile communication terminal is applied. As shown in FIG. The power characteristics of the transmitter (channel) of the mobile communication terminal at room temperature are shown by using the power measuring instrument and the program that can control the power measuring instrument. (B) 250-channel power when the 250-channel 17dBm is used. Each channel compensation value for is shown, and shows a conventional CDMA channel power compensation method.

그러나, 이것은 상온(25도)에서만 적용되므로, 이동통신 단말기의 주변환경이 고온(무더운 여름)이나 저온(추운 겨울)일때, 상기 이동통신 단말기 내부 부품의 특성 변화로 인하여 송신부 채널(주파수)별 송신전력 특성 곡선이 변한다.However, since this is applied only at room temperature (25 degrees), when the ambient environment of the mobile communication terminal is a high temperature (hot summer) or low temperature (cold winter), transmission by channel (frequency) of the transmission unit due to the characteristic change of the internal parts of the mobile communication terminal The power characteristic curve changes.

즉, 상기 종래의 CDMA 채널별 전력 보상방법은 채널(주파수)에 따른 보상에 관한 하나의 테이블을 이용하기 때문에 상온에서 설정된 그 테이블값을 저온이나 고온에서도 적용한다.That is, the conventional CDMA channel power compensation method uses a table for compensation according to channel (frequency), so that the table value set at room temperature is applied even at low or high temperatures.

이에 의해, 종래 송신부의 전력보상은 상온을 제외한 고온 또는 저온에 따른 채널별 송신부 전력보상을 할 수 없기 때문에 그 고온 또는 저온에 따른 채널별 편차를 보상하지 못하게 되어 채널별 송신부의 성능을 균일화할 수 없는 문제점이 있었다.As a result, the power compensation of the conventional transmission unit cannot compensate the transmission power of each channel according to the high or low temperature except for room temperature, and thus it is impossible to compensate the deviation of the channel according to the high or low temperature, thereby making it possible to equalize the performance of the transmission unit for each channel. There was no problem.

본 발명은 상기와 같은 문제점을 해결하기 위하여 창안한 것으로, 이동통신 단말기의 채널(주파수)별 송신부 전력보상과 더불어, 고온과 저온에 따른 채널(주파수)별 송신부 전력 편차를 보상함으로써, 상온뿐만 아니라 고온이나 저온에서도 채널(사업자)별 송신부의 성능을 균일화 할 수 있도록 한 이동통신 단말기의 송신전력 보상방법을 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, and in addition to the compensation of the transmission unit power for each channel (frequency) of the mobile communication terminal, by compensating the transmission unit power deviation for each channel (frequency) according to the high temperature and low temperature, as well as room temperature It is an object of the present invention to provide a transmission power compensation method of a mobile communication terminal that enables the performance of a transmission unit for each channel (operator) even at high or low temperatures.

도 1의 (a),(b)는 종래의 이동통신 단말기의 송신전력 보상방법이 적용되는 상온에서의 송신부 채널별 전력특성 파형도 및 테이블.Figure 1 (a), (b) is a waveform diagram and a table of the power characteristics for each transmission channel at room temperature to which the conventional transmission power compensation method of the mobile communication terminal is applied.

도 2의 (a), (b)는 본 발명의 송신부 채널 보상 곡선을 보인 파형도 및 송신부 채널 보상값을 보인 테이블.2A and 2B are waveform diagrams showing a transmitter channel compensation curve of the present invention and a table showing a transmitter channel compensation value.

상기와 같은 목적을 달성하기 위한 본 발명은, 이동통신 단말기의 온도 변화에 따른 송신부전력 편차를 감소시키는 오차를 보상함에 있어서, 상기 이동통신 단말기는 온도의 변화를 감지하여 상온에서 채널주파수에 따른 평균 송신 전력이 되도록 계측기와 제1 일정 보상치를 이용하여 보상하는 단계와;The present invention for achieving the above object, in compensating for the error to reduce the transmission unit power deviation according to the temperature change of the mobile communication terminal, the mobile communication terminal senses the change in temperature and the average according to the channel frequency at room temperature Compensating using the meter and the first constant compensation value to be the transmission power;

고온에서는 온도 변화에 의해 채널주파수에 따른 평균 송신 전력이 되도록계측기와 제2 일정 보상치를 이용하여 보상하는 단계와;Compensating at a high temperature using an instrument and a second constant compensation value such that an average transmission power according to a channel frequency is caused by a temperature change;

저온에서는 온도 변화에 의해 채널주파수에 따른 평균 송신 전력이 되도록 상기 계측기와 제3 일정 보상치를 이용하여 보상하는 단계로 이루어진 것을 특징으로 한다.Compensating by using the measuring instrument and the third constant compensation value so that the average transmission power according to the channel frequency at low temperature.

이하, 본 발명에 대한 작용 및 효과를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, the operation and effect of the present invention will be described in detail.

먼저, 본 발명은 이동통신 단말기의 전력 측정 계측기와 전력 측정 계측기를 제어할 수 있는 프로그램을 이용하여 상온에서는 종래의 도 1의 (a), (b)와 같은 채널 보상곡선과 상온에서의 송신부 채널 보상 테이블을 이용하여 이동통신 단말기의 송신부 채널(주파수)별 전력을 보상한다.First, the present invention uses a program that can control the power measuring instrument and the power measuring instrument of the mobile communication terminal at room temperature, and the channel compensation curve of the conventional channel as shown in (a) and (b) of FIG. The power of each transmitter channel (frequency) of the mobile communication terminal is compensated using the compensation table.

즉, 상온(25도)에서 송신부 채널별 주파수를 보상한다. 예를 들면 25채널에서는 상기 송신부에서 15dBm을 출력하게 되어, 이를 기준 채널인 250에서 출력되는 전력값(17dBm)과 비교하여 보상치를 2로 하여 17dBm이 출력되도록 한다.That is, the frequency of each transmitter channel is compensated at room temperature (25 degrees). For example, in 25 channels, the transmitter outputs 15 dBm, and compares this to the power value (17 dBm) output from the reference channel 250 so that 17 dBm is output by setting a compensation value of 2.

그러나, 저온(-5도)시 상온의 송신부 채널 보상곡선과 테이블을 적용하면 송신전류 오차가 생기게 되고, 보상이 제대로 되지 않아 성능저하를 야기한다.However, if the transmitter channel compensation curve and the table at room temperature are applied at low temperature (-5 degrees), a transmission current error occurs, and compensation is not performed properly, causing performance degradation.

이는 상기 상온의 송신부 채널 보상곡선과 저온의 송신부 채널 보상곡선을 비교하면 많은 송신전력의 차이가 있음으로 알 수 있다.This can be seen that there is a large difference in transmission power when comparing the transmitter channel compensation curve at room temperature with the transmitter channel compensation curve at low temperature.

따라서, 도 2의 (a), (b)는 저온에서의 송신부 채널 보상 곡선과 송신부 채널 보상값을 보인 테이블과 같이 상기 저온(-5도)에서 계측기와 프로그램을 이용하여 채널별 송신부 송신전력 보상을 하고, 그 값을 채널별 송신부 전력보상 및 온도변화에 따른 채널별 송신부 전력보상을 테이블에 기입하여 상기 저온에서의 송신부 전력을 보상한다.Accordingly, (a) and (b) of FIG. 2 show a transmitter transmission power compensation for each channel using a measuring instrument and a program at the low temperature (-5 degrees) as shown in a table showing a transmitter channel compensation curve and a transmitter channel compensation value at a low temperature. The value of the transmitter is compensated by the transmitter power compensation for each channel and the transmitter power compensation for each channel according to the temperature change to compensate for the transmitter power at the low temperature.

예를 들어 250채널을 기준으로 했을때 상온의 송신부 채널 보상값을 나타낸 테이블을 적용하면 25채널에서는 20dBm을 출력한다. 이것은 기준 채널의 전력인 17dBm과 3dB 만큼차이가 난다.For example, if the table showing the transmitter compensation value at room temperature is applied based on 250 channels, 20 dBm is output in 25 channels. This differs from the reference channel's power of 17dBm by 3dB.

그러나, 상기 저온의 송신부 채널 보상값을 나타낸 테이블을 적용하면 상기 25채널에서 17dBm을 출력하고, 기준 채널인 250채널과 똑같은 전력을 출력한다.However, when the table showing the low temperature transmitter channel compensation value is applied, 17 dBm is output in the 25 channels, and the same power as that of the 250 reference channel is output.

이와 같이, 본 발명은 저온과 고온 및 상온에서의 송신부 채널 보상값을 이동통신 단말기의 전력 측정 계측기와 전력 측정계측기를 제어할 수 있는 프로그램을 이용하여 온도 변화에 따른 적정한 송신 전력 보상치로서, 채널별 송신 전력을 보상한다.As described above, the present invention provides an appropriate transmission power compensation value according to temperature change by using a program for controlling the transmitter channel compensation value at low temperature, high temperature, and room temperature by using a program that can control the power measurement instrument and the power measurement instrument of the mobile communication terminal. Compensate for the star transmit power.

여기서, 상기 저온은 항상 -5도를 의미하는 것은 아니며, 그 저온의 정확한 온도는 엔지니어가 개발시 임의로 설정할 수 있다.Here, the low temperature does not always mean -5 degrees, and the exact temperature of the low temperature may be arbitrarily set by the engineer during development.

본 발명의 이동통신 단말기의 송신전력 보상방법은 전술한 실시예에 국한되지 않고 본 발명의 기술사상이 허용하는 범위내에서 다양하게 변형하여 실시할 수 있다.The transmission power compensation method of the mobile communication terminal of the present invention is not limited to the above-described embodiments, and may be variously modified and implemented within the range permitted by the technical idea of the present invention.

이상에서 상세히 설명한 바와 같이 본 발명은 이동통신 단말기의 채널(주파수)별 송신부 전력보상과 더불어, 고온과 저온에 따른 채널(주파수)별 송신부 전력 편차를 보상함으로써, 상온뿐만 아니라 고온이나 저온에서도 채널(사업자)별 송신부의 성능을 균일화 할 수 있도록 한 이동통신 단말기의 송신전력 보상방법을 제공하는 효과가 있다.As described in detail above, the present invention compensates the transmitter power deviation for each channel (frequency) in accordance with the high temperature and low temperature in addition to the power compensation for each channel (frequency) of the mobile communication terminal. There is an effect of providing a transmission power compensation method of the mobile communication terminal to equalize the performance of the transmission unit for each operator).

Claims (1)

이동통신 단말기의 온도 변화에 따른 송신부전력 편차를 감소시키는 오차를 보상함에 있어서, 상기 이동통신 단말기는 온도의 변화를 감지하여 상온에서 채널주파수에 따른 평균 송신 전력이 되도록 계측기와 제1 일정 보상치를 이용하여 보상하는 단계와;In compensating for an error in reducing the transmission unit power variation according to the temperature change of the mobile communication terminal, the mobile communication terminal detects the change in temperature and uses the measuring device and the first constant compensation value to be the average transmission power according to the channel frequency at room temperature. To compensate; 고온에서는 온도 변화에 의해 채널주파수에 따른 평균 송신 전력이 되도록 계측기와 제2 일정 보상치를 이용하여 보상하는 단계와;Compensating at a high temperature by using a meter and a second constant compensation value such that an average transmission power according to a channel frequency is caused by a temperature change; 저온에서는 온도 변화에 의해 채널주파수에 따른 평균 송신 전력이 되도록 상기 계측기와 제3 일정 보상치를 이용하여 보상하는 단계로 이루어진 것을 특징으로 하는 이동통신 단말기의 송신전력 보상방법.Compensating for the transmission power of the mobile communication terminal at a low temperature comprising the step of compensating by using the measuring device and the third constant compensation value so that the average transmission power according to the channel frequency by the temperature change.
KR1020010089319A 2001-12-31 2001-12-31 Method for compensation of transmission power of mobile communication terminal KR20030058785A (en)

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