KR100953635B1 - Method for simultaneous calibration the band and channel of mobile phone - Google Patents

Abstract

An object of the present invention is to provide a method for simultaneously calibrating a band and a channel of a mobile communication terminal that simultaneously calibrates by integrating a calibration in which channels are separated separately from each band in a terminal using a multiband and a multichannel.

To this end, the present invention provides a method for simultaneously calibrating a band and a channel of a mobile communication terminal, the method comprising: setting a frequency according to each channel by integrating the channels of the first and second frequency bands of the mobile communication terminal into one; Checking a power power value of each of the set channels, which is changed according to a change distance between the mobile communication terminal and the base station; Performing a correction on the power power value of each of the changed channels; And setting a scale factor and a ramp according to each set frequency, and then amplifying and transmitting the power to an antenna at a transmitting end, thereby providing a useful effect of significantly increasing the processing speed of the terminal.

Mobile terminal, multichannel, calibration

Description

Method for simultaneous calibration of band and channel of mobile communication terminal {Method for simultaneous calibration the band and channel of mobile phone}

1 is a schematic diagram of a typical system in accordance with operation of a mobile communication system.

2 is a block diagram illustrating a process according to a method for simultaneously calibrating a band and a channel in a mobile communication terminal of the present invention.

The present invention relates to a method for calibrating a band and a channel of a mobile communication terminal at the same time, and more specifically, a mobile communication for simultaneously calibrating by integrating a separate calibration for each band separately in a multiband and multichannel terminal. The present invention relates to a band and channel simultaneous calibration method of a terminal.

In general, in the transmission technology of a mobile communication terminal using multi-band and multi-channel, a general schematic system configuration is as shown in FIG.

In FIG. 1, a mobile communication terminal 10 used by a user is provided, and there are a plurality of base stations 11 exchanging voice and data with the terminal 10, and a base station control for collectively controlling a plurality of base stations 11. There is an apparatus 12 and consists of an exchange apparatus 13 connected to a base station controller 12.

The exchange device 13 may be represented by a mobile switching center (MSC) in the case of GSM, which is the existing second generation service, and may be represented by a serving GPRS support node (SGSN) in the case of GPRS, which is a 2.5 generation service.

When using the GSM terminal in Europe, two bands of 900MHz / 1800MHz are used as dual-band to receive the service of GSM900 / DC1800, and the terminal user can use both bands. Search the network.

On the other hand, when the GSM terminal is used in the United States, two bands of 850MHz / 1900MHz are used as dual bands to receive the service of GSM850 / PCS1900, and the terminal user searches for available networks for both of these frequency bands. do.

Therefore, the GSM terminal supports all four frequency bands of the 850MHz / 1900MHz and 900MHz / 1800MHz in quad-band so that the GSM terminal can be used in the United States and Europe in the dual band or tri-band of the three frequency bands. It is also called quad-band GSM terminal and tri-band GSM terminal, collectively referred to as multi-band terminal.

Since the base station of the multi-band terminal configured as described above directly connects the radio channel with the mobile communication terminal and exchanges signals and data, controlling the radio frequency (RF) signal level of the base station in the management of the communication quality of the mobile communication. very important.

In particular, in order to reduce the system error that may occur in the base station reception path, the variable attenuation control value of the transceiver for the base station input signal level is determined through the reception path calibration to control the power of the reception path.

In the conventional multiband terminal, the calibration is performed by separately calibrating 1 ~ 124 channels and 975 ~ 1023 channels in the GSM band and 512 ~ 885 channels separately in the DCS (Digital Cellular System) band. Various communication system resources of the multiband terminal have been wasted.

Accordingly, the present invention has been proposed to solve the above-mentioned problems. In the terminal using the multi-band and the multi-channel, the band and the channel of the mobile communication terminal simultaneously calibrate by simultaneously integrating the calibration of the channels separately from each band. Its purpose is to provide a calibration method.

In order to achieve the above object, the present invention provides a method for simultaneously calibrating a band and a channel of a mobile communication terminal. Setting up; Checking a power power value of each of the set channels, which is changed according to a change distance between the mobile communication terminal and the base station; Performing a correction on the power power value of each of the changed channels; And setting a scale factor and a ramp according to each set frequency, and then amplifying and transmitting the power to an antenna by a transmitter.

In this case, the performing of the correction corrects the frequency loss according to the fluctuation distance between the mobile communication terminal and the base station.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The terminal according to the embodiment of the present invention includes all the various mobile communication transceivers, and when the control transceiver associated with the terminal transmits an uplink signal burst to the wireless communication system while informing the system of the arrival time of the burst from a specific mobile station, The uplink signal burst can also be used to make a time measurement of the internal calibration of the terminal.

The signal detection of these terminals can be used to make a time measurement indicative of the delay of each of the antenna cables in the terminal, where the delay can be used to calibrate the loss data measurement produced by the terminal.

FIG. 2 is a block diagram illustrating a process according to a method for simultaneously calibrating a band and a channel in a mobile communication terminal of the present invention, and sets a frequency according to a predetermined channel in the channel setting step 201.

In other words, it integrates 1 ~ 124 channels of existing GSM band, 975 ~ 1023 channels and 512 ~ 885 channels of DCS band into one and sets the frequency according to each channel.

Since the frequency setting according to each channel varies between the mobile communication terminal 10 and the base station 11 and the distance between the base stations also changes according to the movement of the terminal, the frequency also changes according to each channel. In order to match them with each other, the frequency of change according to each channel is set accordingly.

After the channel setting step 201 is completed, each set channel-specific correction power is set 202.

In each of the set channel-specific correction power settings 202, the power power value of each channel is changed in proportion to the distance change between the mobile communication terminal 10 and the base station 11, so that the power value is corrected. Setting (202).

In this case, the band setting is performed separately after the channel setting, and then the correction power is set for each channel. However, in the present invention, since the band value is also divided according to the channel, the existing band setting is omitted, and the correction power for each channel immediately follows the channel setting. Set the.

Therefore, in the past, two setting indexes were required, but in the present invention, since only one is required, the processing speed is increased accordingly.

That is, in the past, the first configuration index according to whether GSM or DCS and the second configuration index for configuring a channel in each of the above are required. However, in the present invention, only one index according to channel configuration is required.

The correction power for each channel is set 202, and then a scale factor is set 203.

The scale factor setting 203 is set to adjust the transmission output power of the mobile communication terminal by setting a frequency variation according to channel variation in each channel as a factor value.

The scale factor setting 203 is successfully made and then ramp setting 204 is made.

The ramp setting 204 compensates for the loss according to the changed frequency by calculating a compensation value of the frequency changed in the scale factor setting 203.

That is, when the base station 11 transmits a frequency signal of a to the terminal 10, the terminal 10 does not transmit the frequency signal of a to the base station 11 after processing the frequency signal of c. Since only the lost b frequency signals are transmitted to the base station 11, the lost c signals must be compensated for.

The loss frequency signal compensation (a = b + c) by c is performed in the ramp setting 204.

After compensating for the loss frequency signal by c in the ramp setting 204, the predetermined frequency compensated is sent to the transmitting terminal Tx of the mobile communication terminal 10 to perform a power amplification (PAM), and then transferred to the antenna 206 (205). )do.

Since the compensated predetermined frequency is a very weak frequency signal, it is amplified by a transmitting power (Tx) power amplifier to a transmission frequency suitable for the terminal transmission and transmitted to the outside of the terminal through the antenna of the terminal (206).

As described in detail above, the present invention provides a useful effect of significantly increasing the processing speed of the terminal by simultaneously calibrating by integrating the calibration of the separate channels for each band in the mobile communication terminal using the multiband and the multichannel. do.

Claims (6)

Integrating channels of the first and second frequency bands of the mobile communication terminal into one and setting a frequency according to each channel; Checking a power power value of each of the set channels, which is changed according to a change distance between the mobile communication terminal and the base station; Performing a correction on the power power value of each of the changed channels; And And setting a scale factor and a lamp according to each set frequency, and then amplifying and transmitting the power to an antenna by a transmitting terminal. 2. According to claim 1, In the performing of the correction, the band and channel simultaneous calibration method of the mobile communication terminal, characterized in that for correcting the frequency loss according to the fluctuation distance between the mobile communication terminal and the base station. According to claim 1, The power power value of each channel, the band and channel simultaneous calibration method of the mobile communication terminal, characterized in that the proportional fluctuations in accordance with the fluctuation distance between the mobile communication terminal and the base station. According to claim 1, And the first and second frequency bands are GSM (Global System for Mobile communications) and DCS (Digital Celluler System). According to claim 1, In the step of setting the scale factor, the band and channel simultaneous calibration method of the mobile communication terminal, characterized in that for setting the respective set frequency to a factor value in order to adjust the transmission output power of the mobile communication terminal. According to claim 1, In the ramp setting step, the band and channel simultaneous calibration method of a mobile communication terminal, characterized in that for compensating for the loss according to the frequency changed in the scale factor setting process.

Images