KR100595707B1 - A method and a apparatus of setting antenna switches for dual mode mobile phone - Google Patents

Abstract

In the present invention, when the external antenna of the dual-mode portable terminal is damaged, the internal antenna is transferred to the UTM communication, the base station is not operated in the compressed mode, and communicates in a specific manner and monitors signals of other communication methods from time to time. A first antenna unit for wirelessly transmitting and receiving a signal of the GSM system, the DS system and the UMS system; A duplexer unit connected to the first antenna unit, transmitting a GMS signal through a first path, and transmitting a UMS signal including a decision signal through a second path; A first switch unit connected to the first path of the duplexer unit and configured to switch the transmission path and the reception path of the GSM signal; A switch module unit connected to the second path of the duplexer unit and configured to switch between the UMS signal and the DC signal transmission path by corresponding control; And a second antenna unit connected to the switch module unit to receive and transmit the radio frequency signals of the UMS system, the GMS system, and the DS system. The dual mode portable terminal is also used for transmitting and receiving high frequency signals. A normal process of performing switching operation according to Table 2 when the antenna switch is operated in a normal mode; A monitoring process of performing switching operation according to Table 3 when the antenna switch unit is operated in a monitor mode; When the damage is detected in the antenna unit is characterized in that the switching process of the transfer operation processing to the second antenna unit.

Description

Antenna switch device and method of dual mode mobile terminal {A METHOD AND A APPARATUS OF SETTING ANTENNA SWITCHES FOR DUAL MODE MOBILE PHONE}

1 is a functional block diagram of a conventional dual-mode portable terminal antenna switch device,

Figure 2 is a flow chart of a conventional dual mode portable terminal antenna switch operating method,

3 is a functional diagram of an antenna switch device of the dual-mode portable terminal of the present invention;

4 is a flowchart of an antenna switch method of the dual-mode portable terminal of the present invention;

5 is a state diagram of the control unit of the switch unit of the dual-mode portable terminal of the present invention;

6 is a control state signal diagram of each switch unit according to the normal mode operation method of the dual-mode portable terminal of the present invention;

7 is a control state signal diagram of each switch unit for each monitor mode operation method of the dual-mode portable terminal of the present invention.

** Explanation of symbols on the main parts of the drawing **

DESCRIPTION OF SYMBOLS 100 First antenna part 110 Duplexer part 120 First switch part

130: second antenna unit 140: switch module unit 150: second switch unit

160: third switch unit 170: fourth switch unit 180: detection unit

190: control unit

The present invention relates to the setting of an antenna switch of a mobile terminal, and more particularly, in the dual mode mobile terminal that accommodates both GSM and UMTS used in Europe. The present invention relates to an antenna switch device and a method of a dual mode portable terminal that monitors an SM band signal and a DS band signal from time to time, and switches to an internal antenna to perform UTM communication when an external antenna is damaged.

The mobile terminal for mobile communication (UE: USER EQUIPMENT) freely moves within the service area formed by the corresponding base station (RAN: RADIO ACCESS NETWORK) of the registered system and monitors and monitors the mobile switching center (MSC). It is a high-tech wireless communication device that instantly communicates wirelessly with a desired party anytime, anywhere through a communication path established by control and switching, and the individual always moves directly.

In the initial stage (1G) of the mobile communication system including the mobile terminal (UE) was a method of analog processing of the voice level signal, in the second generation (2G) is a digital method to add a message communication method including numbers, symbols and characters In the current 3G (3G), it has developed into a digital multimedia-class communication method including a video signal in the voice signal and the text message signal.

The mobile communication system communicates while moving using a limited radio frequency resource, and divides the limited allocated radio frequency resource into a plurality of channels so that a plurality of subscribers or mobile terminals simultaneously connect and communicate.

Among the methods for allocating the limited radio frequency resources to a plurality of channels, a typical code division multiple access (CDMA) code division multiple access (FDMA) scheme is developed based on Korea and the United States. ACCESS (Global System for Mobile Communications), which has developed around Europe, is a kind of time division multiple access (TDMA) system (GSM: GLOBAL SYSTEM FOR MOBILE COMMUNICATION).

The GSM method used in the EUROPE region uses a 900 MHz radio frequency band and a 1.8 GHz radio frequency band, and the use of the 1.8 GHz band extends radio frequency resources. Also referred to as GSM1800 or DIGITAL CORDLESS SYSTEM (DCS) method, the GSM and DCS are combined to operate under the concept of PCS (PERSONAL COMMUNICATION SYSTEM) and collectively referred to as the GSM method.

The third generation mobile communication system capable of multimedia communication in the European region is called UMTS (UNIVESAL MOBILE TELECOMMUNICATION SYSTEM), and transmits data at a high speed of 2 Mbps using a radio frequency signal of 2.1 GHz band and a broadband code. It is asynchronous (ASYNCHRONOUS) method of WCDMA and is similar in concept to IMT-2000, the third generation (3GPP: 3RD GENERATION PARTNERSHIP PROJECT) mobile communication system in Korea.

The portable terminal generally uses an antenna that is commonly matched to different frequencies of the GS method and the UE system, and the antenna has an external type that protrudes to the outside of the mobile terminal and an internal type that is included therein. Choose one for each or use both as needed.

In Europe, the existing mobile communication system operation method is a time division multiple access (TDMA) method, which uses the GSM method including the DCS, and the third generation method capable of multimedia communication is asynchronous (ASYNCHRONOUS). (UMTS) method using a wideband code division multiple access (WCDMA) method.

The GSM system and the UMTS system differ in part of the system configuration and function, and are gradually replaced by the UMTS system, but it takes a lot of time and money to be completely replaced. Due to such a problem, the two systems coexist until replacement is completed.

A mobile terminal (UE) that accommodates both a GSM function and a UE function in a single mobile terminal (UE) to communicate the corresponding method in both the GSM method and the UMTS service area. This is called a dual mode mobile terminal.

The dual mode portable terminal as described above is connected to and communicates with the GSM system in the GSM service area, and communicates with the UMS system in the UMS service area.

The dual-mode portable terminal should monitor the corresponding signal of the UMS area even when the communication is performed in the GS area, and also when the communication is performed in the UMS area by the GSM area. The signal must be monitored to prepare for handover (HAND-OVER) that guarantees mobility.

However, since the GSM method uses the 900 MHz band and the 1800 MHz band, both frequency bands must be monitored, and the third generation communication method, the UMTS method, is used. At the same time, the relevant frequency band should be monitored and the communication should be possible even if the external antenna is damaged to ensure the reliability of mobile communication.

Accordingly, the dual mode mobile terminal (UE) monitors two frequency bands of the GSM system while operating in a UMTS system, and at least in a state where an external antenna is damaged. There is a need to develop a technology for enabling UMS communication.

Hereinafter, an antenna switch device and method of a dual mode portable terminal according to the prior art will be described with reference to the accompanying drawings.

1 is a configuration diagram of an antenna switch device of a dual mode portable terminal according to the prior art, and FIG. 2 is a flowchart of a method of operating an antenna switch of a dual mode portable terminal according to the prior art.

Referring to FIG. 1, the antenna switch device of the dual mode portable terminal according to the prior art will be described. The antenna 10 includes a 900 MHz BS, 1.8 GHz DCS, and 2.1 GHz frequencies of a UE system. The duplexer 20 to which a signal can be transmitted and received, and the antenna 10 is connected to, transmits a signal of a band below 900 MHz and a signal of an abnormal band through different paths.

That is, the duplexer 20 transmits a 900 MHz band GSM signal to a first path, and also 1.8 GHz DCS signal and WCDMA or UMTS 2.1 GHz. Allow a signal to be sent on the second path.

The first switch 30 connected to the first path of the duplexer 20 allows the 900 MHz GS transmission (TX) signal and the reception (RX) signal to be transmitted through respective paths under the control of the controller. Selective switching (SWITCHING).

In addition, the second switch 40 connected to the second path of the duplexer 20 allows the DCS transmission signal and the reception signal of 1800 MHz to be transmitted to the respective paths under the control of the controller, and at the same time, the 2100 MHz Selective switching (SWITCHING) processing to transmit a WCDMA or UMTS type transmission and reception signal in one path.

That is, when using a GSM mobile communication service as the dual-mode portable terminal, the first switch 30 is set by switching the 900 MHz GS signal transmission path and the reception path according to the control signal, Use an SM type mobile communication service.

At this time, the second switch 40 is connected to the WCDMA terminal of the U-MS method by the control signal of the control unit, the corresponding signal received from the antenna 10 and applied through the duplexer 20, Since the control unit monitors and analyzes, the state of the UTM signal is monitored and processed.

When the dual mode mobile terminal (UE) performs mobile communication in a UMTS method, the second switch 40 is connected to a WCDMA terminal, and a signal applied from the antenna 10 and the duplexer 20 is It is applied to the WCDMA terminal, and since the first switch 30 is controlled to be connected to the GSM receiving (RX) terminal, the control unit monitors the GSM signal.

The dual-mode portable terminal of the prior art configuration described above has a problem in that it is not possible to monitor a 1800 MHz decission (DCS) signal during the GSM or UTM system.

Therefore, the base station RAN operates in a compression mode, and when the base station operates in a compression mode, it receives and monitors a decision method signal in a 1800 MHz band.

Since it monitors and processes as described above, it checks the state of moving each service area of the mobile terminal, and freely moves the 900 MHz GS, 1800 MHz decision and 2100 MHz UTM service area through the corresponding handover. While using a mobile communication service.

Hereinafter, an antenna switch operating method of a dual mode portable terminal according to the related art will be described with reference to FIG. 2.

When the dual mode mobile terminal (UE) monitors the mobile communication in the GSM method of the 900 MHz band (S10), the corresponding control unit controls the first switch unit 30 to control the 900 MHz of the GSM system (GSM) method. Since the band signal is monitored and analyzed, communication processing by channel occupation is performed (S20).

When the mobile terminal (UE) monitors to perform UMTS mobile communication by WCDMA of 2100 MHz (S30), the control unit switches and controls the second switch unit 40 to UTM signal. The controller monitors and handles the communication by occupying the corresponding communication channel (S40).

When the mobile terminal monitors to use a decision-based mobile communication service of 1800 MHz (S50), the controller determines whether the base station (RAN) is operated in a compression mode (S60), and the determination When the base station is operated in the compression mode (S60), it monitors the decision-type mobile communication signal of 1800 MHz and performs communication processing by occupying the corresponding communication channel (S70).

That is, the dual mode portable terminal according to the prior art having the above-described configuration, when operating in the GSM system of 900 MHz, or the UMS system of 2100 MHz, to ensure the mobility of each other by monitoring the signal of the other party, In order to confirm the decision operation state of 1800 MHz and to secure the mobility, the process is complicated because the decision signal is monitored at the time when the base station operates in the compression mode.

In addition, the base station operates in the compression mode, which monitors the operating state of another system, that is, the decision system, and stops the transmission for a predetermined time (TRANSMISSION GAP). Since the noise ratio (Eb / No) increases and requires a higher output in the normal frame (NORMAL FRAME), there is a problem such that the CELL COVERAGE formed by the base station becomes smaller and the efficiency of the system decreases. have.

In the present invention, since the base station is not operated in the compression mode, the operation efficiency of the base station is increased, the operation state information of the decision system is frequently monitored, the signal-to-noise ratio is increased, and the antenna is provided in both an external type and an internal type. It is an object of the present invention to provide an antenna switch device and a method of a dual mode portable terminal that secures UTM operation even when an external antenna is damaged.

The present invention has been made in order to achieve the above object, the first antenna unit for wireless transmission and reception of the high-frequency signals of the GSM system, the DS system and the UMS system; A duplexer unit connected to the first antenna unit, transmitting a GSM signal through a first path, and transmitting a UMS signal including a decision signal through a second path; A first switch unit connected to the first path of the duplexer unit and configured to switch the transmission path and the reception path of a GSM high frequency signal; A switch module unit connected to a second path of the duplexer unit and configured to switch between a UMS signal and a decision signal transmission path by corresponding control; And a second antenna unit connected to the switch module unit to wirelessly transmit and receive a high frequency signal of a UMS method, a GMS method, and a DC method.

In addition, the present invention devised to achieve the above object, the normal process of the switching operation processing according to Table 2 in the case of operating the antenna switch for transmitting and receiving high-frequency signals in the normal mode by the dual-mode portable terminal; A monitoring process of switching operation processing according to Table 3 when the dual mode portable terminal operates the antenna switch unit in the monitor mode; When the dual-mode portable terminal detects a damage to the antenna unit, it is characterized in that the switching process of the transfer operation processing to the second antenna unit.

Hereinafter, with reference to the accompanying drawings, an antenna switch device and method of a dual-mode portable terminal according to the present invention.

It is attached to illustrate the present invention, Figure 3 is a functional configuration diagram of the antenna switch device of the dual-mode portable terminal according to the present invention, Figure 4 is a flow chart of the antenna switch method of the dual-mode portable terminal according to the present invention, Figure 5 6 is a state diagram of the control unit control signal of the dual mode mobile terminal according to the present invention, FIG. 6 is a state diagram of the control unit control state signal for each normal mode operation method of the dual mode mobile terminal according to the present invention, and FIG. This is the control status signal of each switch unit by monitor mode operation method of dual mode portable terminal.

Referring to FIG. 3, a description will be given of an antenna switch device of a dual mode mobile terminal according to the present invention, a GSM system using a frequency of 900 MHz and a DCS using a frequency of 1800 MHz. A first antenna unit 100 for wireless transmission and reception of a high frequency signal of a UMTS method using a frequency of 2100 MHz and

UMTS connected to the first antenna unit 100, transmitting a GSM signal of 900 MHz band frequency through a first path, and including a DSS of 1800 MHz band frequency. A duplexer unit 110 transmitting a system signal to a second path,

A first switch unit 120 connected to a first path of the duplexer unit 110 and configured to switch a transmission (TX) path and a reception (RX) path of a GSM type high frequency signal;

The second path of the duplexer 110 is connected to the second path of the duplexer 110 and is configured to switch between a UMTS signal and a DCS signal transmission path according to the control. A second switch unit 150 connected to the switch and configured to switch the transmission paths of UMTS and DCS high frequency signals according to the control signals; A third switch unit 160 connected to the second antenna unit 150 and switching switching transmission paths of a UMTS and a DCS high frequency signal according to a corresponding control signal; A second switch connected to the second switch unit 150 and the third switch unit 160 and configured to switch the transmission (TX) path and the reception (RX) path of the decision (DCS) type high frequency signal according to the control signal; A switch module unit 140 consisting of four switch units 170,

A second antenna unit 130 connected to the switch module unit 140 for transmitting and receiving radio frequency signals of a UMTS, a GSM and a DCS system;

Detecting and outputting the high frequency signal strength received through the first antenna unit 100 and the second antenna unit 130, respectively, by monitoring the high frequency signal of the antenna to determine whether or not normally received A detector 180 for outputting the monitoring result signal to a controller;

It is connected to the sensing unit 180, and controls the switching connection state of the first switch unit 120 and the switch module unit 140, the first switch unit 120 to control the By setting the transmission path and the reception path switching, and controlling the second switch unit 150 to switch the transmission path of the UTM type high frequency signal and the decision type high frequency signal, and to control the third switch unit 160 The transmission path and reception of the DCS high frequency signal and the DCS high frequency signal transmission path of the second antenna unit 130 are controlled, and the fourth switch unit 170 is controlled. When the first antenna unit 100 does not receive a high frequency signal due to damage or the like by analyzing a signal applied from the sensing unit 180, the path is set using a second antenna unit 130. S Way Tong A configuration that includes the controller 190 for controlling to the.

Hereinafter, according to the present invention having the configuration described above, the antenna switch device of the dual-mode portable terminal will be described in detail with reference to the accompanying drawings.

Used in Europe, GMS (GLOBAL SYSTEM FOR MOBILE COMMUNICATION) type mobile communication signal of 900 MHz band, DIGITAL CORDLESS SYSTEM type mobile communication signal of 1800 MHz band, 2100 MHz band Dual Mode (ASUALCHRONOUS) and UNITSAL UNIVERSAL MOBILE TELECOMMUNICATION SYSTEM (UMTS) method by WCDMA: WIDE-BAND CODE DIVISION MULTIPLE ACCESS MODE) A mobile terminal (UE: USER EQUIPMENT) may move to a service area managed in a different manner by mobility during mobile communication in a corresponding service area operated in a respective manner.

As described above, when moving to another area while using a mobile communication service in a specific area of the three types of service areas, mobility is guaranteed, and thus, it is impossible to predict which type of service area to move to.

For example, during the use of the GSM mobile communication service, the mobile terminal may move to a decis- sion type service area or to a UMS type service area, thereby monitoring both a decising type service signal and a UMS type service signal (MONITOR). Should be analyzed.

In addition, even when using a DS-type mobile communication service, a GPS-type mobile communication service signal and a UE-type mobile communication service signal should be monitored and analyzed. Communication service signal and GSM mobile communication service signal should be monitored and analyzed.

As described above, it is an antenna switch device according to the present invention to simultaneously receive and select three types of mobile communication signals in a dual mode mobile terminal.

The first antenna unit 100 is provided as an external antenna in a dual mode mobile terminal (UE), which is a main antenna (MAIN ANT.), And is connected to the duplexer unit (GSM) signal. And transmit / receive and transmit a DCS signal and a UMTS signal.

The second antenna unit 130 is provided as a built-in antenna in the dual-mode portable terminal (UE), and is connected to the third switch unit 160 of the switch module unit 140 and has a device of 1800 MHz band ( DCS) signals and UMTS signals of the 2100 MHz band are transmitted and received.

The duplexer unit 110 connected to the first antenna unit 100 transmits and receives a signal of 900 MHz band or less through a first path, and a signal of 1800 MHz band and 2100 MHz band through a second path. Send and receive.

The first path of the duplexer unit 110 is connected to the first switch unit 120, and the first switch unit 120 is a 900 MHz band high frequency signal by the control signal VC_D applied from the control unit 190. Select the TX (TX) path and RX (RX) path.

As shown in detail in FIG. 5, the first switch unit 120 sets a path with a D1 terminal when a high level or a digital value of 1 is applied to the 900 MHz band. Outputs a transmission signal of a GSM system signal to the first antenna unit 100, and sets the path (PATH) with the D2 terminal when a low level or a digital value of 0 is applied, the first antenna unit The 100 inputs the GSM signal of the 900 MHz band.

The second switch unit 150 of the switch module unit 140 is connected to the second path of the duplexer unit 110, and the second switch unit 150 is connected to the control signal VC_A applied from the control unit 190. By setting the switching path, the path with the A1 terminal is set when a high level or digital 1 control signal is applied, and the path with the A2 terminal when a low level or digital 0 control signal is applied.

The third switch unit 160 constituting the switch module unit 140 is connected to the second antenna unit 130 and sets the switching path by the control signal VC_C applied from the control unit 190. When the control signal VC_C of the high level or digital 1 value is applied, the connection path with the C1 terminal is set. When the control signal VC_C with the low level or digital 0 value is applied, the connection path with the C2 terminal is set.

The fourth switch unit 170 constituting the switch module unit 140 is connected to the A2 terminal of the second switch unit 150 and the C2 terminal of the third switch unit, respectively, and is controlled by the control signal VC_B applied from the control unit. By setting the switching path, if the high level or digital 1 value is applied as a control signal, the path is set with the B1 terminal. If the low level or digital 0 value is applied as the control signal, the path with the B2 terminal is set. .

The control signal of the controller 190 for controlling the path setting of the first switch unit 120 to the fourth switch unit 170 is shown in detail in FIG. 5.

The detector 180 detects a radio signal reception state of the first antenna unit 100 and the second antenna unit 130 and applies the result to the controller 190. In particular, the first antenna If the unit 100 is damaged or fails to receive a radio signal due to a failure, the control signal is output to the control unit 190, so that the control unit 190 quickly configures the switch module unit 140. Each switch unit 150, 160, 170 is controlled to control switching to set a path PATH with the second antenna 130.

The control unit 190 operates the first switch unit 120 and the switch module unit 140 in a normal mode or in a monitor mode according to a user's selection.

The normal mode monitors a 1800 MHz DCS mobile communication signal using a COMPRESS MODE operating state of a base station RAN as in the prior art, and switching control as shown in FIG. The monitor mode, according to the present invention, monitors both the decission (DCS) method, the GSM method, and the UMTS method from time to time while the base station does not operate the compression mode. And switching control as shown in FIG. 7.

As an example, the normal mode operation method will be described with reference to FIG. 3 and FIG. 6. In the mobile communication service area of the GSM mode of the 900 MHz band, a dual mode mobile terminal (UE) is used. In the case of the communication using the GSM method, the control unit 190 to the first switch unit 120, the second switch unit 150, the third switch unit 160 and the fourth switch unit 170, respectively The control signals of VC_D, VC_A, VC_C, and VC_B are output.

In the state in which each control signal is displayed in the order of VC_A, VC_B, VC_C, and VC_D, the corresponding control signal in the case of receiving the RSM signal (RX) has a value of "1, X, OFF, 1", respectively. do.

In more detail, since the control signal VC_D value is 1 of the high level, the first switch unit 120 sets the D1 path, and the second switch unit 150 of the switch module unit 140 has the control signal VC_A value. Since the high level 1 sets the A1 path, the third switch unit 160 of the switch module unit 140 cannot set the path PATH because the control signal VC_C value is OFF. The fourth switch unit 170 has a control signal VC_B value of X and is in a DON'T CARE state regardless of which control signal is input.

That is, the radio signals of all bands received from the first antenna unit 100 are transmitted to the second switch unit 150 of the first switch unit 120 and the switch module unit 140 through the duplexer unit 110. The first switch unit 120 is applied to each, and sets the D1 path according to the high-level VC_D control signal of the controller 190, so that the first antenna unit 100 receives the 900 MHz GSM-type reception signal (RX). ) Is applied to the path.

Since the second switch unit 150 sets the A1 path according to the high-level VC_A control signal of the control unit 190, the second switch unit 150 transmits the received signal of the first antenna unit 100 to the WCDMA type UMS path of 2100 MHz. .

Since the third switch unit 160 receives the control signal VC_C in the off state from the control unit 190, a path PATH for outputting a signal received by the second antenna 130 is not set. The four switch unit 170 is in a DON'T CARE state in which the control signal VC_B of the control unit 190 has any value.

Accordingly, the dual mode mobile terminal UE receives the Rx of 900 MHz GSM signal received through the first antenna 100 and simultaneously receives the WCDMA UMTS signal of 2100 MHz. MONITOR

3 and 6, when the dual mode mobile terminal UE transmits a TX signal of a 900 MHz band in a normal mode operating state, When the control signal is displayed in the order of VC_A, VC_B, VC_C, and VC_D, the control signal has a value of "1, X, OFF, 0", respectively.

In the transmission (TX) state, the value of the control signal VC_D applied to the first switch unit 120 is different from the reception (RX) state, it can be seen that the value of zero.

That is, since the first switch unit 120 receives a control signal having a digital zero value of LOW LEVEL from the controller 190, the first switch unit 120 sets a D2 path and transmits a 900 MHz GSM transmission (TX). ) Is transmitted to the first antenna unit 100 via the duplexer unit 110, thereby wirelessly transmitting.

Since the second switch unit 150, the third switch unit 160, and the fourth switch unit 170 constituting the switch module unit 140 are controlled in the same manner as the reception (RX) state, the description does not need to be repeated. While receiving the GSM mobile communication signal, the mobile terminal receives and monitors a UMTS signal based on the WCDMA system of the 2100 MHz band.

That is, even in the case of transmitting (TX) or receiving (RX) the GSM signal, the UMTS signal is monitored and the need for handover due to mobility is required. To judge whether there is and so on.

According to another embodiment, with reference to the accompanying Figures 3 and 6, the operation of the 1800 MHz band decision signal reception (RX) in the normal mode (NORMAL MODE) operation mode, respectively, The control signals VC_A, VC_B, VC_C, and VC_D become values of "0, 1, OFF, X".

In more detail, the control signal VC_D of the first switch unit 120 is an X value of DON'T CARE irrespective of which state the first switch unit is controlled, and the 1800 MHz band signal is output from the dual-mode portable terminal. During processing, it displays the state of not processing the GS signal in the 900 MHz band.

Since the control signal VC_A value applied to the second switch unit 150 of the switch module unit 140 is 0 at a low level, the A2 path is set, and the third switch unit 160 of the switch module unit 140 controls. Since the signal VC_C value is OFF, the path PATH cannot be set, and since the control signal VC_B value applied to the fourth switch unit 170 of the switch module unit 140 is 1 of high level, the path B1 is set.

That is, the dual mode mobile terminal UE transmits the radio signals of all bands received from the first antenna unit 100 through the duplexer unit 110 to the first switch unit 120 and the switch module unit 140. Are applied to the second switch unit 150, and the received signal input to the first switch unit 120 is ignored and not processed. The received signal input to the second switch unit 150 is routed through the path A2. Output to the fourth switch 170.

The fourth switch 170 receives and processes the received (RX) signal input from the second switch unit 150 through the set path B1 to the decision (DCS) receive (RX) function unit of the 1800 MHz band. .

During the processing of the DCS signal reception RX, the monitor of the UMTS system signal uses the COMPRESS MODE of the base station RAN.

3 and 6, a case of a DCS signal transmission (TX) in a 1800 MHz band in a normal mode operating state will be described.

When the control signal is displayed in the order of VC_A, VC_B, VC_C, and VC_D, the control signal has a value of "0, 0, OFF, X", respectively.

In the decision mode signal transmission (TX) state, it can be seen that the value of the control signal VC_D applied to the first switch unit 120 is the X value of DON'T CARE. Do not operate the SM signal transmit (TX) function and receive (RX) function.

Since the second switch unit 150 and the fourth switch unit 170 constituting the switch module unit 140 receive a control signal corresponding to the low level digital 0 value from the control unit 190, respectively, the A2 path And a B2 path, and a decision transmission (TX) signal of a 1800 MHz band connected to the B2 path is output to the first antenna unit 100 through the duplexer unit 110 and thus wirelessly transmitted.

In the above transmission (TX) process, when the base station (RAN) is operated in the compression mode, it monitors the UMTS signal and monitors the need for handover due to mobility. To judge whether there is and so on.

In another embodiment, the control state of each switch unit for transmitting / receiving a UTM signal is described with reference to FIGS. 3 and 6.

The UMTS signal is based on the WCDMA method. Since the TX and RX signals are simultaneously transmitted through one path, the path set by each switch unit is controlled by one control. Simultaneous transmission and reception using.

The path setting control signals outputted from the control unit 190 to transmit and receive the UTM signals are displayed as "1, X, OFF, 1" when displayed in the order of VC_A, VC_B, VC_C, and VC_D.

According to the control signal, since the value of the control signal VC_D applied to the first switch unit 120 is a high level digital 1 value, the path of D1 is set, and the first antenna unit 100 wirelessly receives the duplexer unit. The signal via 110 is applied to the GS receive (RX) function unit through the set D1 path.

The GS signal received as described above is used for the purpose of handover processing for mobility and the like through corresponding analysis and processing.

The second switch unit 150 sets a path of A1 according to a control signal having a high level digital 1 value, and the fourth switch unit is applied with an X value of DON'T CARE which is not processed even if it is controlled to any value. do.

Therefore, the first antenna unit 100 is connected to a function unit for processing WCDMA transmission / reception signals of UTM through the duplexer unit 110.

That is, the UE transmits and receives a EMS signal through the A1 path and simultaneously receives a 900 MHz GS signal, thereby processing handover for mobility.

The normal mode as described above requires the compressor mode of the base station RAN as in the prior art.

Hereinafter, with reference to the accompanying Figures 7 and 3, the monitor mode operating state of the control method of the switch unit according to the present invention will be described in detail.

In the MONITOR MODE according to the present invention, each switch unit control signal for transmitting / receiving a 900 MHz GMS signal is the same as the NORMAL MODE, thus avoiding redundant description.

In the monitor mode according to the present invention configured as described above, when receiving a 1800 MHz signal of the device, the routing control signal output from the controller 190 is VC_A, VC_B, VC_C, VC_D. In the order of, the values are "1, 1, 0, 1".

Since the first switch unit 120 receives the high level digital 1 value as the control signal VC_D, the first switch unit 120 sets a path D1 and receives the radio signal received from the first antenna unit 100 through the duplexer unit 110. The signal is applied to a 900 MHz GMS reception signal processing function.

Since the second switch unit 150 of the switch module unit 140 receives a high level digital 1 value as the control signal VC_A, the second switch unit 150 sets an A1 path, and sets the duplexer unit from the first antenna unit 100. The wireless signal received through 110 is applied to the WCDMA system of the 2100 MHz.

The third switch unit 160 of the switch module unit 140 receives the low level digital 0 value as the control signal VC_C and sets the C2 path so that the second antenna unit 130 and the fourth switch unit ( 170).

The fourth switch unit 170 receives the high level digital 1 value from the control unit 190 as the control signal VC_B and sets the path B1, and thus is applied from the third switch unit 160. 2 The received signal of the antenna unit 130 is applied to the deceased receiving function unit of 1800 MHz.

That is, according to the switch path setting as described above, even when receiving a 1800 MHz decision signal, it receives and monitors a WCDMA WMDMA signal of 2100 MHz and a GS M signal of 900 MHz.

In another embodiment, in the monitor mode according to the present invention, when the 1800 MHz signal of the decision signal is transmitted, the routing control signal output from the controller 190 is in the order of VC_A, VC_B, VC_C, and VC_D. In this case, the values are "1, 0, 0, X".

The difference between the case of transmitting and receiving the decision signal is a switching control signal of the control unit 190 applied to the first switch unit 120 and the fourth switch unit 170. When only the difference between the control signals is described, the switching control signal VC_D applied to the first switch unit 120 is an X value representing DON'T CARE, and the switching control signal VC_B applied to the fourth switch unit 170 is Low level digital zero value.

That is, in the configuration described above, a decision transmission (TX) signal of 1800 MHz is applied to the C2 path of the third switch unit 160 through the B2 path, and wirelessly transmitted through the second antenna unit 130. At the same time, the 900 MHz GS signal is not processed, and the WCDMA UE signal of 2100 MHz is continuously received and monitored.

In another exemplary embodiment, when transmitting and receiving a WCDMA UTM signal of 2100 MHz, the control unit 190 receives a switching control signal having the same state as that of receiving the 1800 MHz deceased signal. .

That is, in the case of transmitting and receiving the WCDMA system UTM signal as described above, the routing control signals output from the control unit 190 are displayed in the order of VC_A, VC_B, VC_C, and VC_D, respectively, "1, 1, 0". , 1 " and the same value as the decision (DCS) signal reception (RX) state, and thus redundant description will be avoided.

In addition, the detection unit 180 detects and analyzes a high frequency signal output from the first antenna unit 100, so that the first antenna unit 100 may be damaged or the function may be weakened so that the received radio signal is normally used. Determine if you can or not.

As a result of the determination of the sensing unit 180, when the first antenna unit 100 is not normally used, a corresponding signal is output to the control unit and transferred to the second antenna, thereby the UTM type mobile communication service. Secure operations.

The present invention having the above-described configuration monitors signals of the GSM system and the decision system in the state of transmitting and receiving the UTM signal without operating the base station RAN in the compression mode, and also performs the decision processing. In the state of receiving a signal, there is an advantage of monitoring the GS and UMS signals.

Hereinafter, an antenna switch method of a dual mode portable terminal according to the present invention will be described with reference to FIG. 4.

When the dual mode portable terminal operates the antenna switch for transmitting and receiving high frequency signals in the normal mode, the switching operation is processed according to Table 2. The dual mode portable terminal performs the high frequency antenna switch unit in the normal mode. Determining whether to operate (S100); In the case of operating the high frequency antenna switch unit in the normal mode in the process (S100), the normal process consisting of a process (S110) for analyzing and controlling the corresponding control signal according to Table 2,

When the dual mode portable terminal operates the antenna switch unit in the monitor mode, performing a switching operation according to Table 3, and determining whether to operate the high frequency antenna switch unit in the monitor mode (S120); In the case of operating the high frequency antenna switch unit in the monitor mode in the step (S120), the monitoring process comprising the step (S130) of analyzing the control signal according to Table 3 and switching operation processing,

When the dual mode portable terminal detects the damage of the antenna unit, the dual mode portable terminal switches to the second antenna unit to process the received signal. The first antenna unit 100 used as the main MAIN is damaged to receive the received signal. Determining whether it does not detect (S140); When the reception signal is not detected by the damage of the antenna unit in the process (S140), it is composed of a switching process consisting of a process (S150) for switching to the second antenna unit 130.

Hereinafter, the antenna switch method of the dual mode mobile terminal according to the present invention having the above configuration will be described in detail with reference to the accompanying drawings.

The dual mode mobile terminal UE determines whether to operate each switching unit in a normal mode (S100), and in operation S100 determines each switching unit 120, 150, 160, 170 in a normal mode. In the case of operating as, the table 2 shown in Figure 6 attached to the SMS transmission and reception, the DS transmission and reception, and the switching management for the UMS operation (S110).

The dual mode UE determines whether to operate each switching unit in a monitor mode (S120), and when operating each switch unit in a monitor mode in the determination S120, the attached figure. Table 3 shown in Figure 7 performs the switching operation for the GS transmission and reception, the DS transmission and reception, and the UMS operation (S130).

Since the dual mode portable terminal detects and analyzes the received signal of the first antenna 100 that is used as the main antenna using the sensing unit 180, the dual mode portable terminal is damaged and thus the received signal cannot be detected or used. If it is determined that the reception is weak enough (S140), and if it is determined in the determination (S140) that the first antenna 100 is damaged, transfer to the second antenna 130, the UMS system of 2100 MHz band To use the mobile communication service (S150).

That is, the antenna switch of the dual-mode portable terminal according to the present invention having the above-described configuration may be set and operated in the normal mode using the compressor mode of the base station as conventionally selected, or the base station is not operated in the compression mode. In this state, it sets up and operates a monitor mode that can monitor all other signals during the communication process by the specific method of the GSM method, the DS method and the UE method.

Therefore, since the base station is not operated in the compression mode, there are advantages such as extending the service area or cell coverage, increasing the use efficiency of the system, and increasing the signal-to-noise ratio of the base station transmission signal.

In addition, when the external antenna used as the main is damaged, the use of the UTM service by switching to the built-in antenna has the advantage of improving the reliability.

 According to the present invention, the dual-mode portable terminal includes an external antenna and an internal antenna. When the external antenna is damaged, the present invention has an industrial use effect of securing stability of the UTM communication by switching to the internal antenna.

In addition, since the base station is not operated in the compression mode, there is an industrial use effect of extending the service area of the base station and increasing efficiency.

In addition, the signal-to-noise ratio of the signal transmitted from the base station to increase the communication sensitivity and the reliability of the mobile communication system has a convenient effect in use.

Claims (10)

A first antenna unit configured to wirelessly transmit and receive a high frequency signal of a GSM system, a DS system, and a UE system; A duplexer unit connected to the first antenna unit, transmitting a GSM signal through a first path, and transmitting a UMS signal including a decision signal through a second path; A first switch unit connected to the first path of the duplexer unit and configured to switch the transmission path and the reception path of a GSM high frequency signal; A switch module unit connected to the second path of the duplexer unit and configured to switch a UTM signal and a decision signal transmission path by corresponding control; And a second antenna unit connected to the switch module unit to wirelessly transmit / receive a high frequency signal of a UMS system, a GMS system, and a DC system. According to claim 1, A detector for detecting and outputting high frequency signal strengths received through the first and second antennas, respectively; And an controller configured to be connected to the sensing unit and to control a switching connection state of the first switch unit and the switch module unit. The method of claim 1, wherein the switch module unit, A second switch unit connected to the second path of the duplexer unit and configured to switch the transmission paths of the UTM and decission type high frequency signals according to a control signal; A third switch unit connected to the second antenna and configured to switch the transmission paths of the UTM and the decision type high frequency signal according to a control signal; And a fourth switch unit connected to the second switch unit and the third switch unit and configured to switch the transmission path and the reception path of the decision type high frequency signal according to a control signal. Device. The method of claim 2, wherein the detection unit, The antenna switch device of the dual-mode portable terminal, characterized in that for monitoring the antenna unit to determine whether or not to receive a high frequency signal normally and outputs the monitoring result signal to the control unit. The method of claim 2, wherein the control unit, Controlling the first switch unit to set the transmission path and the reception path of the GS type high frequency signal, and controlling the second switch unit to switch the transmission path of the UTM type high frequency signal and the decision type high frequency signal, and Controlling the switch unit to set switching between the high frequency signal and decission type high frequency signal transmission path of the second antenna portion, and the fourth switch unit to control the switching setting of the transmission path and the receiving path of the decision type high frequency signal Antenna switch device of a dual-mode portable terminal, characterized in that consisting of. The method of claim 5, The control unit is configured to analyze the signal applied from the detection unit when the first antenna unit does not receive a high-frequency signal, the dual mode portable, characterized in that the configuration to control to perform the UE-based communication using the second antenna unit Antenna switch device of the terminal. Normal operation of switching operation processing according to Table 2 when the antenna switch for transmitting and receiving high frequency signals in the normal mode by the dual mode mobile terminal, When the dual-mode portable terminal operates the antenna switch unit in the monitor mode, the monitoring process of switching operation processing according to Table 3; When the dual mode portable terminal detects a damage to the antenna unit, the switching method of switching operation to the second antenna unit, characterized in that the antenna switch method of the dual mode portable terminal. The method of claim 7, wherein the normal process, Determining whether the dual mode mobile terminal operates the high frequency antenna switch unit in a normal mode; In the case of operating the high frequency antenna switch unit in the normal mode in the above process, the antenna switch method of the dual mode portable terminal, characterized in that the control signal processing according to Table 2 and the switching operation processing process. The method of claim 7, wherein the monitoring process, Determining whether the dual mode portable terminal operates the high frequency antenna switch unit in a monitor mode; In the case of operating the high frequency antenna switch in the monitor mode in the process, the antenna switch method of the dual-mode portable terminal, characterized in that the control signal processing according to Table 3 and the switching operation process. The method of claim 7, wherein the transfer process, Determining whether the dual-mode portable terminal detects a received signal due to damage to a first antenna unit used as a main; The antenna switch method of the dual-mode portable terminal, characterized in that the process of switching to the second antenna unit when the detection signal is not detected by the damage to the antenna unit in the process.

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