KR101180110B1 - Mobile communication terminal with dual signal processing function and the method thereof - Google Patents

Abstract

The present invention provides a receiver for separating a digital cellular network (DCN) signal or a personal communications service (PCS) signal from a RF signal received through an antenna and processing the signal into a baseband signal, and a baseband DCN signal or a PCS signal. Transmitter for signal processing to transmit RF signal through RF, and receiver or transmitter and baseband DCN signal or PCS signal for each time slot allocated for sequential processing of DCN signal or PCS signal by time division multiple access. Provides a mobile communication terminal having a dual signal processing function that performs input and output of a, including a main modem for performing CDMA signal processing for the DCN signal or PCS signal.

According to the present invention, one code division multiple access (CDMA) processing module is provided by dividing and processing a DCN signal and a PCS signal by dividing the time axis by a time division multiple access method using a TDMA sequencer. Through this, two services of DCN and PCS can be provided simultaneously.

DCN, PCS, MSM, Main Modem, CDMA, TDMA, Dual Signal Processing

Description

Mobile communication terminal with dual signal processing function and signal processing method {MOBILE COMMUNICATION TERMINAL WITH DUAL SIGNAL PROCESSING FUNCTION AND THE METHOD THEREOF}

1 is a block diagram of a mobile communication terminal equipped with a dual signal processing function according to an embodiment of the present invention.

2 is a flowchart illustrating an operation of receiving an RF signal in a mobile communication terminal having a dual signal processing function according to an embodiment of the present invention.

3 is a flowchart illustrating an operation of transmitting an RF signal in a mobile communication terminal having a dual signal processing function according to an embodiment of the present invention.

<Description of Symbols of Major Parts of Drawings>

100: mobile communication terminal 110: antenna

120: triplexer 130: DCN duplexer

140: PCS Duplexer 150: GPS Filter

160: RF receiver 161: PCS port

162: PCS downconverter 163: PCS I / Q port

164: DCN port 165: DCN downconverter

166: DCN I / Q port 167: GPS port

168: GPS downconverter 169: GPS I / Q port

170: RF transmitter 171: PCS port

172: PCS Upconverter 173: PCS I / Q Port

174: DCN port 175: DCN upconverter

176: DCN I / Q port 180: main modem

181: PCS I / Q port 182: DCN I / Q port

183: TDMA sequencer 184: CDMA processing unit

185: GPS I / Q Port

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to dual signal processing of a mobile communication terminal. More particularly, the present invention relates to a single mobile communication terminal that processes a personal communications service (PCS) signal or a digital cellular network (DCN) signal to perform a mobile communication service. The present invention relates to a mobile communication terminal having a dual signal processing function for simultaneously performing signal processing on a PCS signal and a DCN signal through a code division multiple access (CDMA) processing module, and a signal processing method thereof.

Mobile communication systems have tended to have more complex functions to satisfy various needs of consumers. In addition, there is a limitation that the mobile communication terminal should be easy to carry by simplifying and miniaturizing components.

In addition, due to various needs for mobile communication terminals, mobile communication terminals that can be used as bidirectional systems of a Personal Communications Service (PCS) and a Digital Cellular Network (DCN) have emerged.

Such mobile communication terminals have a function of supporting heterogeneous networks using different radio frequency bands.

However, a conventional mobile communication terminal cannot support a PCS (Personal Communications Service) and a DCN (Digital Cellular Network) service at the same time even when operating as a bidirectional system of a Personal Communications Service (PCS) and a Digital Cellular Network (DCN). .

That is, the conventional mobile communication terminal operates in a mode of processing a personal communications service (PCS) signal, a mode of processing a digital cellular network (DCN) signal, or selects one of the two according to a user's selection.

For example, a conventional mobile communication terminal may process a Personal Communications Service (PCS) signal or a Digital Cellular Network (DCN) signal through a roaming service, but for a roaming service, a PCS (Personal) is used for roaming service. It is designated and operated as one of the communication service (CSC) operation mode or DCN (Digital Cellular Network) operation mode.

Meanwhile, among the communication services of the mobile communication terminal, various additional services such as waiting for a call or three-way call are used in the same network.

Therefore, in order to use these services freely between heterogeneous networks, a technology for enabling PCS (Personal Communications Service) signal processing and DCN (Digital Cellular Network) signal processing in a mobile communication terminal is needed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above technical needs, and a technical problem to be solved by the present invention is to simultaneously process a PCS signal and a DCN through one CDMA processing module in a mobile communication terminal which processes a PCS signal or a DCN signal and performs a mobile communication service. It is to enable dual signal processing for a signal.

According to an aspect of the present invention for achieving the above technical problem, a receiver for separating the DCN signal or PCS signal from the RF signal received through the antenna and signal processing as a baseband signal, respectively, a baseband DCN signal or PCS signal Is a transmitter for signal processing for transmitting the RF signal through an antenna, and a receiver or transmitter and a baseband DCN signal for each time slot allocated for sequential processing of a DCN signal or a PCS signal by a time division multiple access scheme. Provided is a mobile communication terminal having a dual signal processing function that performs input / output of a PCS signal and includes a main modem for performing CDMA signal processing on a corresponding DCN signal or a PCS signal.

Preferably, the main modem includes a receiver or transmitter and a DCN I / Q signal or a PCS I / Q signal for each time slot allocated for sequential processing of the DCN I / Q signal or the PCS I / Q signal by a time division multiple access scheme. Performs input / output of CDMA signal processing for the corresponding DCN I / Q signal or PCS I / Q signal.

Preferably, the receiver separates the DCN signal or the PCS signal from the RF signal received through the antenna and outputs the DCN I / Q signal or the PCS I / Q signal to the main modem through respective signal processing.

Preferably, the transmitter receives the I / Q signal of the DCN signal or the PCS signal from the main modem and processes each signal to transmit the RF signal through the antenna.

Preferably, the main modem includes a PCS I / Q port for performing input / output of PCS I / Q signals with a receiver or transmitter, a DCN I / Q port for performing input / output of DCN I / Q signals with a receiver or transmitter, and time division multiplexing. Allocates a time slot for sequential processing of the DCN I / Q signal or the PCS I / Q signal by the access method, and the DCN I / Q signal or the PCS I / Q signal of the receiver or transmitter and the baseband for each allocated time slot And a CDMA processor for performing CDMA signal processing on a DCN I / Q signal or a PCS I / Q signal to be input or output through the TDMA sequencer.

Here, the main modem further includes a GPS I / Q port that receives a GPS I / Q signal received and received by the receiver, and the CDMA processing unit receives a GPS I / Q signal from the GPS I / Q port and processes the signal. do.

Preferably, the main modem allocates time slots for the sequential processing of the DCN signal or the PCS signal by time division multiple access, and performs input / output of the receiver or transmitter and the baseband DCN signal or PCS signal for each allocated time slot. A TDMA sequencer to perform and a CDMA processing unit to perform CDMA signal processing for the DCN signal or PCS signal to be input or output through the TDMA sequencer.

According to another aspect of the invention, the receiving unit for separating the signal of at least one or more different frequency bands from the RF signal received through the antenna to each of the baseband signal, and at least one baseband signal through the antenna A transmitter for performing signal processing for transmitting RF signals of different frequency bands, and a receiver for each time slot allocated for sequential processing of at least one signal having a different frequency band by a time division multiple access scheme. Or a mobile communication terminal having a dual signal processing function including a transmitter and the main modem for performing input and output of the baseband signal for the signal of at least one different frequency band, and performs the CDMA signal processing for the baseband signal To provide.

According to another aspect of the present invention, the receiving step of separating the DCN signal or PCS signal from the RF signal received through the antenna signal to the baseband signal, respectively, and the time division multiple access method of the DCN signal or PCS signal A selection step of selecting a signal to be processed from the baseband DCN signal or PCS signal received by the reception step for each time slot allocated for sequential processing, and CDMA signal processing for the DCN signal or PCS signal selected by the selection step; It provides a signal processing method of a mobile communication terminal having a dual signal processing function comprising a CDMA signal processing step of performing.

According to another aspect of the invention, the CDMA signal processing step of performing the CDMA signal processing for the DCN signal or PCS signal, and the time allocated for the sequential transmission processing of the DCN signal or PCS signal by the time division multiple access method A selection step of selecting a signal to be transmitted from among the DCN signal or the PCS signal processed by the CDMA signal processing step for each slot and a signal processing for transmitting the DCN signal or PCS signal selected by the selection step as an RF signal through an antenna are performed respectively. It provides a signal processing method of a mobile communication terminal having a dual signal processing function comprising a transmitting step.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a mobile communication terminal equipped with a dual signal processing function according to an embodiment of the present invention.

Referring to FIG. 1, a mobile communication terminal 100 having a dual signal processing function according to an embodiment of the present invention includes an antenna 110, a triplexer 120, and a DCN duplexer 130. And a PCS duplexer 140, a GPS filter 150, an RF receiver 160, an RF transmitter 170, and a main modem 180.

The antenna 110 receives a DCN signal or a PCS signal transmitted from a base station and a GPS signal transmitted from a global positioning system (GPS) satellite. In this case, the signals received through the antenna 110 are RF signals.

The triplexer 120 receives the RF signal including the DCN signal, the PCS signal, and the GPS signals through the antenna 110 to branch the signals, or divides the DCN signal and the PCS signal to be transmitted through the antenna 110, respectively. Output to 110).

The triplexer 120 is connected to the DCN duplexer 130, the PCS duplexer 140, and the GPS filter 150.

The DCN duplexer 130 separates the DCN signal from the RF signal received from the antenna 110 through the triplexer 120, and outputs the DCN signal to be transmitted through the antenna 110 to the triplexer 120.

The PCS duplexer 140 separates the PCS signal from the RF signal received from the antenna 110 through the triplexer 120, and outputs the PCS signal to be transmitted through the antenna 110 to the triplexer 120.

The GPS filter 150 separates the GPS signal from the RF signal received from the antenna 110 through the triplexer 120.

The RF receiver 160 is connected to the DCN duplexer 130, the PCS duplexer 140, and the GPS filter 150 to receive the RF signals received through the DCN duplexer 130, the PCS duplexer 140, and the GPS filter 150, respectively. The DCN signal, the PCS signal, and the GPS signal of the band are respectively received and processed into baseband signals.

For this purpose, the RF receiver 160 may include a PCS port 161 connected to the PCS duplexer 140 and a DCN port 164 connected to the DCN duplexer 130 and a GPS port connected to the GPS filter 150. 167).

The RF receiver 160 down-converts the PCS signal received from the PCS duplexer 140 through the PCS port 161 to process the PCS signal, and has an orthogonal relationship with each other (In-Phase signal / Quadrature-). PCS down converter 162 for outputting a phase signal), PCS down converter (162), PCS I / Q port 163 for outputting the PCS I / Q signal to the main modem (180) ) Is connected.

The RF receiver 160 down-converts the DCN signals received from the DCN duplexer 130 through the DCN port 164 to process the DCN signals and outputs them as I / Q signals having an orthogonal relationship with each other. The DCN downconverter 165 is connected to a DCN I / Q port 166 for outputting a DCN I / Q signal to the main modem 180.

The RF receiver 160 down-converts the GPS signals received from the GPS filter 150 through the GPS port 167 to process the GPS signals, and outputs them as I / Q signals having an orthogonal relationship with each other. The GPS downconverter 168 is connected to a GPS I / Q port 169 for outputting a GPS I / Q signal to the main modem 180.

Here, the PCS down converter 162, the DCN down converter 165, and the GPS down converter 168 down convert the RF signal into a baseband signal and output an I / Q signal having an orthogonal relationship with each other.

The RF transmitter 170 is connected to the DCN duplexer 130, the PCS duplexer 140, and the main modem 180 to receive the baseband DCN signal and the PCS signal from the main modem 180, respectively, and transmit the signals to the RF signal band. The signal is processed and output to the DCN duplexer 130 or the PCS duplexer 140, respectively.

The RF transmitter 170 includes a PCS port 171, a PCS up converter 172, and a PCS I / Q port 173 for PCS signal processing.

The PCS port 171 is connected to the PCS duplexer 140 and outputs the PCS signal signaled by the PCS upconverter 172 to the PCS duplexer 140.

The PCS up-converter 172 up-converts the I / Q signals received through the PCS I / Q port 173 to be orthogonal to each other and outputs the PCS signal in the RF signal band to the PCS port 171.

The PCS I / Q port 173 receives the PCS I / Q signal from the main modem 180 and outputs it to the PCS up-converter 172.

The RF transmitter 170 includes a DCN port 174, a DCN upconverter 175, and a DCN I / Q port 176 for DCN signal processing.

The DCN port 174 is connected to the DCN duplexer 130 and outputs the PCS signal signaled by the DCN upconverter 175 to the DCN duplexer 130.

The DCN up-converter 175 upconverts the I / Q signals received through the DCN I / Q port 176 to each other orthogonal to each other and outputs the DCN signals in the RF signal band to the DCN port 174.

The DCN I / Q port 176 receives the DCN I / Q signal from the main modem 180 and outputs the DCN I / Q signal to the DCN upconverter 175.

The main modem 180 includes a PCS I / Q port 181, a DCN I / Q port 182, a TDMA sequencer 183, and a CDMA processor 184.

The PCS I / Q port 181 is connected to the PCS I / Q port 163 provided in the RF receiver 160 through an I / Q data line, and is a baseband PCS output from the PCS I / Q port 163. Receive an I / Q signal.

In addition, the PCS I / Q port 181 is connected to the PCS I / Q port 173 included in the RF transmitter 170 through an I / Q data line and has a baseband signal processed by the CDMA processor 184. Outputs the PCS I / Q signal to the PCS I / Q port 173.

The DCN I / Q port 182 is connected to the DCN I / Q port 166 provided in the RF receiver 160 through an I / Q data line and is a baseband DCN output from the DCN I / Q port 166. Receive an I / Q signal.

In addition, the DCN I / Q port 182 is connected to the DCN I / Q port 176 provided in the RF transmitter 170 through an I / Q data line, and the baseband of the baseband signal processed by the CDMA processor 184 is processed. The DCN I / Q signal is output to the DCN I / Q port 176.

The TDMA sequencer 183 is a time division multiple access method for PCS I / Q signals or DCN I / Q signals transmitted and received through the PCS I / Q port 181 and the DCN I / Q port 182. Allocates a time slot for sequential processing and samples a PCS I / Q signal or a DCN I / Q signal for each time slot.

Therefore, when the time slot is a time slot for processing the PCS I / Q signal, the TDMA sequencer 183 samples and receives the PCS I / Q signal input from the RF receiver 160 or inputs from the CDMA processor 184. The PCS I / Q signal is sampled and transmitted to the RF transmitter 170.

Meanwhile, when the time slot is a time slot for processing a DCN I / Q signal, the TDMA sequencer 183 samples and receives a DCN I / Q signal input from the RF receiver 160 or inputs from the CDMA processor 184. The DCN I / Q signal is sampled and output to the RF transmitter 170.

The CDMA processor 184 may signal-process a DCN I / Q signal or a PCS I / Q signal received from the RF receiver 160 through the TDMA sequencer 183 according to the timeslot assigned by the TDMA sequencer 183, The DCN I / Q signal or the PCS I / Q signal to be transmitted through the RF transmitter 170 is processed to the RF transmitter 170 through the TDMA sequencer 183 according to the timeslot assigned by the TDMA sequencer 183. Output

That is, when the CDMA processor 184 becomes a time slot that performs a reception mode among the time slots allocated by the TDMA sequencer 183 to process the PCS I / Q signal, the CDMA processor 184 receives an RF receiver through the PCS I / Q port 181. 160 receives the PCS I / Q signal.

Meanwhile, when the CDMA processor 184 becomes a time slot performing a transmission mode among the time slots allocated by the TDMA sequencer 183 to process the PCS I / Q signal, the CDMA processor 184 transmits an RF transmitter through the PCS I / Q port 181. 170) to output the PCS I / Q signal to be transmitted.

Meanwhile, when the CDMA processor 184 becomes a time slot performing a reception mode among the time slots allocated by the TDMA sequencer 183 to process the DCN I / Q signal, the CDMA processor 184 receives an RF receiver through the DCN I / Q port 182. 160 receives a DCN I / Q signal.

Meanwhile, when the CDMA processor 184 becomes a time slot performing a transmission mode among the time slots allocated by the TDMA sequencer 183 to process the DCN I / Q signal, the CDMA processor 184 transmits an RF transmitter through the DCN I / Q port 182. 170) to output a DCN I / Q signal to be transmitted.

In addition, the main modem 180 further includes a GPS I / Q port 185 that receives the GPS I / Q signal through the RF receiver 160.

The GPS I / Q port 185 is connected to the GPS I / Q port 169 of the RF receiver 160 through an I / Q data line to output a GPS I / Q signal output from the GPS I / Q port 169. Receive. The GPS I / Q port 185 is connected to the CDMA processor 184.

The CDMA processor 184 processes the GPS I / Q signals received from the GPS I / Q port 185 to perform a GPS service.

2 is a flowchart illustrating an operation of receiving an RF signal in a mobile communication terminal having a dual signal processing function according to an embodiment of the present invention.

Referring to FIG. 2, the antenna 110 receives a DCN signal or a PCS signal transmitted from a base station and a GPS signal transmitted from a GPS satellite (S1).

The triplexer 120 receives the RF signal including the DCN signal, the PCS signal, and the GPS signals through the antenna 110 and branches the signals according to the signal (S2).

The DCN duplexer 130, the PCS duplexer 140, and the GPS filter 150 determine which signals are included in the RF signal received through the triplexer 120 (S3).

The DCN duplexer 130 separates the DCN signal from the RF signal received from the antenna 110 through the triplexer 120 when the DCN signal is included in the RF signal as a result of the determination (S4).

The DCN downconverter 165 of the RF receiver 160 down-converts the DCN signal received from the DCN duplexer 130 through the DCN port 164 to generate an I / Q signal having an orthogonal relationship with each other, thereby DCN I / Q. Output through the port 166 (S5).

When the PCS duplexer 140 determines that the RF signal includes the PCS signal, the PCS duplexer 140 separates the PCS signal from the RF signal received from the antenna 110 through the triplexer 120 (S6).

The PCS down converter 162 of the RF receiver 160 down converts the PCS signals received from the PCS duplexer 140 through the PCS port 161 to generate baseband I / Q signals having orthogonal relations with each other. It outputs through the I / Q port 163 (S7).

The TDMA sequencer 183 sequentially processes PCS I / Q signals or DCN I / Q signals transmitted and received through the PCS I / Q port 181 and the DCN I / Q port 182 by a time division multiple access scheme. In accordance with the allocated time slots, a PCS I / Q signal or a DCN I / Q signal is sampled for each time slot and a signal to be processed is selected (S8).

When a signal to be processed for each timeslot is selected, the CDMA processor 184 receives the PCS I / Q signal or received from the RF receiver 160 according to the timeslot assigned by the TDMA sequencer 183 to perform signal processing. (S9).

Meanwhile, when the GPS filter 150 includes the GPS signal as a result of the determination, the GPS filter 150 separates the GPS signal from the RF signal received from the antenna 110 through the triplexer 120 (S10).

The GPS downconverter 168 of the RF receiver 160 down-converts the GPS signals received from the GPS filter 150 through the GPS port 167 to generate baseband I / Q signals having orthogonal relations with each other. It outputs to the CDMA processing unit 184 through the I / Q port 169 (S11). Accordingly, the CDMA processor 184 performs a GPS service by signal processing the received GPS signal (S12).

3 is a flowchart illustrating an operation of transmitting an RF signal in a mobile communication terminal equipped with a dual signal processing function according to an embodiment of the present invention.

Referring to FIG. 3, the CDMA processor 184 outputs a DCN I / Q signal or a PCS I / Q signal by performing CDMA signal processing on a DCN signal or a PCS signal (S21).

The TDMA sequencer 183 performs the DCN I / Q signal-processed by the CDMA processor 184 for each time slot allocated for sequential transmission of the DCN I / Q signal or the PCS I / Q signal by a time division multiple access scheme. A signal to be output to the RF transmitter 170 is selected by sampling the signal or the PCS I / Q signal (S22).

The TDMA sequencer 183 determines which signal is sampled according to the timeslot (S23). The TDMA sequencer 183 outputs the PCS I / Q port 173 of the RF transmitter 170 when the sampled signal is the PCS I / Q signal according to the determination result (S24).

The PCS upconverter 172 upconverts the PCS I / Q signal received from the PCS I / Q port 181 of the main modem 180 through the PCS I / Q port 173 to convert the PCS I / Q signal into a PCS signal in the RF signal band. It outputs to the PCS duplexer 140 through the PCS port 171 (S25).

The PCS duplexer 140 outputs the PCS signal of the RF signal band input through the PCS port 171 to the triplexer 120 (S26).

The triplexer 120 wirelessly transmits the PCS signal input from the PCS duplexer 140 through the antenna 110 (S27).

On the other hand, the TDMA sequencer 183 outputs the DCN I / Q port 176 of the RF transmitter 170 if the sampled signal is the DCN I / Q signal according to the determination result (S28).

The DCN upconverter 175 upconverts the DCN I / Q signal received from the DCN I / Q port 182 of the main modem 180 through the DCN I / Q port 176 to a DCN signal in the RF signal band. The DCN port 174 outputs to the DCN duplexer 130 (S29).

The DCN duplexer 130 outputs the DCN signal of the RF signal band input through the DCN port 174 to the triplexer 120 (S30). The triplexer 120 wirelessly transmits the input DCN signal through the antenna 110 (S31).

The present invention has been described with reference to preferred embodiments. However, those skilled in the art will understand that many other embodiments other than those specifically described also fall within the spirit and scope of the invention.

For example, in one embodiment of the present invention, a triplexer is used to process three signals such as a PCS signal, a DCN signal, and a GPS signal. However, when the GPS signal is not used, a DCN signal and a PCS signal are used instead of the triplexer. You can use a duplexer to separate it.

In addition, although an embodiment of the present invention has been described using the PCS signal and the DCN signal as an example, the type of the signal is not limited thereto, and various modifications may be applied to signals of different frequency bands.

According to the present invention, a DCN signal and a PCS signal can be processed by one CDMA processor by separating and processing the DCN signal and the PCS signal by dividing the time axis by a time division multiple access scheme using a TDMA sequencer in a mobile communication terminal. The mobile communication terminal can simultaneously provide two services of the DCN and PCS.

Therefore, according to the present invention, the mobile communication terminal maintains a communication state at the same time as the heterogeneous network, so that the mobile communication terminal can answer a call from another communication network even while performing a call through one communication network. Manganese can also provide a variety of value-added services, such as call waiting and trilateral calls.

Claims (10)

A receiver which separates the DCN signal or the PCS signal from the RF signal received through the antenna and processes the signal into baseband signals, respectively; A transmitter for signal processing for transmitting a baseband DCN signal or a PCS signal as an RF signal through the antenna; Performs input / output of the base station DCN signal or the PCS signal for each time slot allocated for the sequential processing of the DCN signal or the PCS signal by the time division multiple access method, and the corresponding DCN signal or the PCS signal Includes a main modem to perform CDMA signal processing for The main modem, Performs input / output of the receiver or transmitter and the DCN I / Q signal or the PCS I / Q signal for each time slot allocated for the sequential processing of the DCN I / Q signal or the PCS I / Q signal by a time division multiple access method. And a dual signal processing function for performing CDMA signal processing on a corresponding DCN I / Q signal or a PCS I / Q signal. delete The method according to claim 1, The receiving unit, A mobile communication device having a dual signal processing function that separates a DCN signal or a PCS signal from the RF signal received through the antenna and outputs a DCN I / Q signal or a PCS I / Q signal to the main modem through respective signal processing. terminal. The method of claim 1, wherein the transmitting unit, And a dual signal processing function for receiving a DCN signal or an I / Q signal of a PCS signal from the main modem and processing each signal for transmission as an RF signal through the antenna. The method according to claim 1, wherein the main modem, A PCS I / Q port for performing input / output of the PCS I / Q signal with the receiver or transmitter; A DCN I / Q port for performing input / output of the DCN I / Q signal with the receiver or transmitter; A time slot is allocated for sequential processing of a DCN I / Q signal or a PCS I / Q signal by a time division multiple access scheme, and the DCN I / Q signal of the receiver or the transmitter and the baseband is allocated for each allocated time slot. Or a TDMA sequencer performing input / output of a PCS I / Q signal, And a CDMA processor configured to perform CDMA signal processing on a DCN I / Q signal or a PCS I / Q signal to be input or output through the TDMA sequencer. The method according to claim 5, wherein the main modem, And a GPS I / Q port for receiving a GPS I / Q signal received by the receiver and signal-processed. The CDMA processing unit is a mobile communication terminal having a dual signal processing function for receiving a GPS I / Q signal from the GPS I / Q port for signal processing. The method according to claim 1, wherein the main modem, TDMA for allocating time slots for sequential processing of DCN signals or PCS signals by time division multiple access, and performing input / output of the base station DCN signals or PCS signals with the receiver or the transmitter for each assigned timeslot With a sequencer, And a CDMA processor configured to perform CDMA signal processing on a DCN signal or a PCS signal to be input or output through the TDMA sequencer. A receiver which separates signals of at least one or more different frequency bands from the RF signals received through the antennas, and processes the signals into baseband signals, respectively; A transmitter for performing signal processing for transmitting a baseband signal to at least one RF signal of at least one different frequency band through the antenna; The baseband signal for the signal of the receiver or the transmitter and the at least one different frequency band for each time slot allocated for sequential processing of at least one signal having a different frequency band by a time division multiple access scheme. A main modem that performs input and output, and performs CDMA signal processing on a corresponding baseband signal, The main modem, Performs input / output of the receiver or transmitter and the DCN I / Q signal or the PCS I / Q signal for each time slot allocated for the sequential processing of the DCN I / Q signal or the PCS I / Q signal by a time division multiple access method. And a dual signal processing function for performing CDMA signal processing on a corresponding DCN I / Q signal or a PCS I / Q signal. A receiving step of separating the DCN signal or the PCS signal from the RF signal received through the antenna and processing the signals into baseband signals, respectively; A selection step of selecting a signal to be processed from the baseband DCN signal or PCS signal received by the receiving step for each time slot allocated for sequential processing of the DCN signal or the PCS signal by a time division multiple access scheme; A CDMA signal processing step of performing CDMA signal processing on the DCN signal or the PCS signal selected by the selection step, DCN I / Q or PCS I / Q signals are input and output for each time slot allocated for the sequential processing of DCN I / Q signals or PCS I / Q signals by the time division multiple access method. A signal processing method of a mobile communication terminal equipped with a dual signal processing function, further comprising the step of performing CDMA signal processing on a Q signal or a PCS I / Q signal. A CDMA signal processing step of performing CDMA signal processing on a DCN signal or a PCS signal; A selection step of selecting a signal to be transmitted from among the DCN signal or the PCS signal processed by the CDMA signal processing step for each time slot allocated for the sequential transmission processing of the DCN signal or the PCS signal by a time division multiple access scheme; A transmission step of performing signal processing for transmitting the DCN signal or the PCS signal selected by the selection step as an RF signal through an antenna, DCN I / Q or PCS I / Q signals are input and output for each time slot allocated for the sequential processing of DCN I / Q signals or PCS I / Q signals by the time division multiple access method. A signal processing method of a mobile communication terminal equipped with a dual signal processing function, further comprising the step of performing CDMA signal processing on a Q signal or a PCS I / Q signal.

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