KR100606024B1 - Mobile terminal for multi-mode, multi-band application and method for operating thereof - Google Patents

Abstract

The present invention provides a multi-mode, multi-band mobile station, the transmission unit for transmitting the multi-mode, multi-bands through the respective transmitters, and the signals corresponding to the same frequency band of the multi-mode, multi-bands service of the same frequency band Is received through the combined receiver for receiving one or more other radio signals, and the signal that does not correspond to the same frequency band includes a receiver for receiving through the receiver for each frequency band. The present invention can reduce the number of receivers compared to the existing mobile station by using a single receiver even if the service type is different for the same frequency band. In addition, the multi-mode, multi-band mobile station of the present invention allows the duplexer used only in the conventional FDD scheme (eg WCDMA scheme) to be used in the TDD scheme (eg GSM850 or PCS1900 scheme).

Multi-Mode, Multi-Band, Mobile Station, Combined Receiver, Duplexer, Switch

Description

MULTI-TERMINAL FOR MULTI-MODE, MULTI-BAND APPLICATION AND METHOD FOR OPERATING THEREOF}

1 is a schematic diagram illustrating a wireless communication system in which a multi-mode, multi-band mobile station communicates with a base station operating under various air interface specifications.

2 is a block diagram illustrating a multi-mode, multi-band mobile station according to a first embodiment of the present invention.

3 is a flowchart illustrating a search mode operation performed by a multi-mode, multi-band mobile station according to a first embodiment of the present invention.

4 is a block diagram illustrating a multi-mode, multi-band mobile station according to a second embodiment of the present invention.

5 is a table showing frequency bands and services supported by a multi-mode, multi-band mobile station according to a second embodiment of the present invention.

6 is an exemplary circuit diagram illustrating a global multi-mode, multi-band mobile station according to a second embodiment of the present invention.

7 is a detailed circuit diagram of a US multi-mode, multi-band mobile station according to a second embodiment of the present invention;

8 is a detailed circuit diagram of a European multi-mode, multi-band mobile station according to a second embodiment of the present invention.

9 is a diagram illustrating a reception operation of a multi-mode, multi-band mobile station according to a second embodiment of the present invention.

10 is a diagram illustrating a baseband processor and a modem unit of a multi-mode, multi-band mobile station according to a second embodiment of the present invention.

11 is a view for explaining a low noise amplification gain adjusting method of a WCDMA / GSM combined receiver in a multi-mode, multi-band mobile station according to a second embodiment of the present invention.

12 illustrates a baseband signal processing procedure of a multi-mode, multi-band mobile station according to a second embodiment of the present invention.

The present invention relates to a radio transceiver and, more particularly, to a mobile station supporting multiple modes and multiple bands.

In recent years, various access standards for wireless networks have been developed (eg, GSM, CDMA, WCDMA, IEEE-801.16, etc.). However, the proliferation of such wireless access standards also means inconveniences to wireless mobile stations (or terminals) such as mobile phones, PDA devices, wireless laptops, and the like, and difficulties in their manufacture. End user expectations of ubiquitous networks cannot be met by mobile stations that support only a few of the available specifications.

To cope with this, wireless mobile stations are transitioning to a software-defined radio (SDR) architecture to provide a single hardware platform for multiple air interface technologies. Due to the continuous development of semiconductor process technology, a larger proportion of signal processing functions in mobile stations (or wireless terminals) have been changed from a specific specification to a specific communication purpose transmission / reception system through software reconfiguration on a single hardware platform, thereby changing various wireless standards into one. It can be provided by the system. There are many different types of hardware that can be reconfigured in software, for example, a fixed functional block with customizable parameters and flexible interconnects. This software reconfigurable hardware may be implemented, for example, as a Field Programmable Gate Array (FPGA).

SDR designs require consideration of factors such as current consumption and low component count to protect board space, material cost, and battery life. At the same time, the desire to achieve roaming capability across multiple specifications requires the SDR receiver to perform faster search and handoff. In general, however, greater power is required for faster processing. In the development of wireless mobile stations to date, several different wireless standards required various different hardware. When designing a conventional receiver, a Zero-Intermediate-Frequency (ZIF) structure using an analog receiver front end using an analog device is used.

In conventional ZIF architectures, direct downconverters use narrowband equipment that is not suitable for broadband applications. Another part of the receiver design is that it is digitized at the IF frequency.

Therefore, there is a need for a mobile station capable of optimizing and implementing software reconfigurable hardware elements at the receiver front end. In particular, there is a need for a receiver in which a reconfigurable element can be used prior to conversion to a digital signal at the IF level.

In general, mobile communication services are provided in different communication services in different countries (regions) around the world, and each frequency service scheme uses a plurality of frequency bands. For example, the mobile communication service method is provided by CDMA, GSM, WCDMA, etc. by country (region), and the CDMA method uses a frequency band of 800 MHz, 1800 MHz, and 1900 MHz. The GSM method uses a frequency band of 850 MHz and 900 MHz, and a frequency band of 1800 MHz and 1900 MHz. In addition, WCDMA uses 850 MHz, 1900 MHz, and 2000 MHz.

Conventional wireless mobile stations have been configured to use signals of one or two frequency bands corresponding to communication services to be serviced among the mobile communication services. Therefore, the wireless mobile station was forced to use only one or two mobile communication services of various mobile communication services around the world. Accordingly, when a user goes to another area due to travel or business trip, the user cannot use the mobile station.

Accordingly, users want a mobile station that can receive all mobile communication services from around the world. Mobile station manufacturers are also trying to make all mobile communication services around the world available as a single mobile station according to the needs of these users. In order to use all mobile communication services of each country and frequency bands of each service, a mobile station supporting multiple modes and multiple bands is required.

Accordingly, an object of the present invention is to provide a multi-mode, multi-band mobile station that can reduce the overall power consumption of a software-defined radio (SDR) processing element.

The present invention achieves a lower intermediate frequency (IF) and does not require high processing speed of a digital intermediate frequency (DIF) receiver element. A NZIF (Near-Zero Intermediate Frequency) radio (RF) receiver front end configuration is required. Can be obtained using The NZIF RF receiver can also provide lower sampling rates at the IF while maintaining digital signal processing at the IF level.

The present invention realizes the design of a wideband image reject mixer at the RF analog front end of the receiver to enable low power consumption while satisfying multiple frequency bands. In addition, the present invention has developed a technology that can operate the digital IF portion even at a lower sampling rate and the configurability of the digital IF filter, thereby lowering the power consumption.

In particular, it is a primary object of the present invention to provide a multi-mode, multi-band mobile station that can be used in a wireless network operating under a variety of different air interface standards to solve the above-mentioned deficiencies or problems of the prior art.

In addition, an object of the present invention is to provide a mobile station supporting a multi-mode, multi-band using different service-compatible wireless transceiver of the same band for different services of the same band.

Another object of the present invention is to provide a mobile station that supports diversity and simultaneously supports multiple modes and multiple bands by using different service-compatible wireless transceivers of the same band.

The present invention for achieving the above object is a multi-mode, multi-band mobile station for a wireless network operating under various air interface standards, a plurality of low noise amplifiers each adapted for a selected frequency band, A Near-Zero Intermediate Frequency (NZIF) wideband image blocking mixer capable of receiving an amplified RF signal from one of a low noise amplifier and down converting the amplified RF signal to generate a first analog intermediate frequency (IF) signal. It is provided.

In addition, the present invention is a method of operating a multi-mode, multi-band mobile station for a wireless network operating under various air interface standards, by selecting one of a plurality of low noise amplifier to amplify an incoming radio frequency (RF) signal, where a plurality of low noise Adapting each of the amplifiers to a selected frequency band, and a Near-Zero Intermediate Frequency (NZIF) wideband image blocking mixer down-converts the RF signal amplified from the selected low noise amplifier to convert a first analog intermediate frequency (IF) signal. Producing step.

In addition, the present invention is a multi-mode, multi-band mobile station, the transmission unit for transmitting the multi-mode, multi-band signals through the respective transmitters, and the signals corresponding to the same frequency band of the multi-mode, multi-band signals are the same A service of a frequency band is received through a combined receiver for receiving one or more other radio signals, and a signal that does not correspond to the same frequency band includes a receiver configured to receive through receivers for each frequency band.

In addition, the present invention is a multi-mode, multi-band mobile station, a switch unit for performing a switching operation for selecting the mode and the band to be received among the multi-mode, multi-band under a predetermined control, multi-mode, multi-band according to the switching operation Receivers that receive signals of their own mode and band among the signals, mixers which down-convert the received signal by using local frequencies corresponding to the mode and band to be received, and among the receivers under predetermined control A baseband processing unit for controlling an operation of a receiver corresponding to a mode and a band to be received, baseband processing the down-converted received signal, and outputting the baseband signal by mode; Outputs a control signal for receiving a signal of and to receive the local frequency And a modem unit configured to adjust to a local frequency corresponding to a mode and a band, and to demodulate the mode-based baseband signal through each mode-specific modem.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the same components in the drawings are represented by the same reference numerals and symbols as much as possible even if shown in different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 illustrates a wireless communication system 100 in which a multi-mode, multi-band mobile station (or wireless terminal) 111 can communicate with a base station operating under a variety of different air interface specifications. In FIG. 1, base station 101 is assumed to be part of a first wireless network operating according to a first air interface specification (e.g., CDMA 2000 in this embodiment). It is also assumed that base station 102 is part of a second wireless network that operates according to a second wireless interface standard (e.g. GSM in this embodiment). The mobile station (MS) 111 may be configured with a first software load to communicate with the BS 101, or may be re-configured with a second software load to communicate with the BS 102. It may be. The software load may be selected manually by user input or automatically by detecting a signal from BS 101 or BS 102.

The invention is not limited to use in practically mobile equipment. The invention also applies broadly to other types of radio access terminals, such as fixed wireless terminals, and only mobile stations are described below for simplicity and clarity. However, the term "mobile station" as used in the claims and the description below is intended to encompass practically mobile equipment (e.g., cordless phones, wireless laptops), fixed wireless terminals (e.g., monitors with wireless capabilities). It is used.

2 shows a multi-mode, multi-band mobile station 111 according to a first embodiment of the present invention. The mobile station 111 may include an antenna array 201, a switchplexer 205, a reconfigurable receive path 210a, a reconfigurable receive path 210b, and a reconfigurable software-defined radio (SDR) modem block 260. Include. SDR modem block 260 should typically be a multi-purpose device or semi-custom device that can essentially change characteristics based on new software loads. The mobile station 111 also includes a transmission path 270 and a plurality of bandpass filters 275, which may include, for example, a bandpass filter (BPF) 275a, a bandpass filter 275b, And a bandpass filter 275c. Finally, the mobile station 111 further includes a plurality of power amplifiers 280, for example, the power amplifier 280a, the power amplifier 280b, and the power amplifier 280c.

The present invention implements a more efficient search algorithm through the same dual receive path, thereby facilitating roaming (also referred to as a "service right switch") operation. Thus, the same mobile station can be used even if the user travels between different regions supporting different wireless standards. The dual channel structure also allows remote reconfiguration of the intermediate frequency (IF) filter and the digital intermediate frequency. Since the reconfigurable receiving path 210a and the reconfigurable receiving path 210b are substantially the same, only the reconfigurable receiving path 210a will be described in detail. However, the following description of the reconfigurable reception path 210a applies to the reconfigurable reception path 210b with the same effect.

The reconfigurable receive path 210a includes an input stage 212, a switch 215, an image rejection mixer (IR) mixer 216, a voltage controlled oscillator (VCO) with a selectable low noise amplifier (LNA). And variable frequency oscillator block 218, configurable blocking bandpass filter (BPF) 220, programmable variable gain amplifier (VGA) 225, configurable anti-alias bandpass filter (BPF) 203. The reconfigurable receive path 210a also includes a programmable analog-to-digital converter (ADC) 235, an intermediate frequency (IF) mixer 240, a numerically controlled oscillator (NCO) 245, a digital channel filter block. 250, resampler 252 and digital-to-analog converter (DAC) 255 and configuration controller 299.

The configuration controller 299 is for controlling the configuration of the reception passage 210a. Depending on the selected air interface, the configuration controller 299 sends commands and / or configuration parameters to the reconstruction block in the receiving passage 210a to reconfigure these devices. For simplicity, the connection line between the configuration controller 299 and other elements of the receiving passage 210a is not shown.

Input stage 212 of a selectable low noise amplifier (LNA) consists of a low noise amplifier (LNA) 212a, a low noise amplifier (LNA) 212b, and a low noise amplifier (LNA) 212c, for example. do. Input stage 212 of selectable low noise amplifier (LNA) receives an incoming RF signal from switchplexer 205. Each of the LNA 212a, LNA 212b, and LNA 212c is optimized to amplify the RF signal within the selected frequency range. For example, selectable LNA 212a may amplify the signal with minimum power consumption in the 2.0-2.1 GHz range, and other selectable LNA 212b may amplify the signal with minimum power consumption in the 1800-1900 GHz range. In addition, another selectable LNA 212c can amplify the signal with minimal power consumption in the 860-960 GHz range. By optimizing and using the LNA for a specific frequency band, the multi-mode, multi-band capability of the mobile station 111 is enhanced.

The switch 215 selects only one input from the selectable LNAs and applies it to the input of the wideband image blocking (IR) mixer 216. To reduce power consumption, low noise amplifiers that are not selected by the switch 215 may be turned off. The wideband image stop (IR) mixer 216 receives the programmable reference signal from the VCO and variable frequency oscillator block 218 and downconverts the selected RF signal from the switch 215 to an intermediate frequency level, for example 10 MHz. . The wideband image reject (IR) mixer 216 performs NZIF (Near-Zero Intermediate Frequency) downconversion. As a preferred embodiment, image blocking only appears in a wideband IR mixer.

The IF output of the wideband IR mixer 216 is filtered by the configurable blocking BPF 220 to remove the interferers. After further filtering by the configurable anti-alias bandpass filter (BPF) 230, the programmable variable gain amplifier (VGA) 225 may bring the IF signal level to the predetermined desired level for the ADC 235. Adjust In this embodiment, the ADC 235 samples the IF signal at 40 mega samples (40 Msps) per second.

The digital IF sample generated from ADC 235 is then down converted to baseband by IF mixer 240 and NOC 245. Baseband in-phase I and quadrature Q outputs of IF mixer 240 are filtered in digital channel filter block 250. The filtered baseband I and Q signals are then sampled again by resampler 252 to match the speed of SDR modem 26. When the SDR modem receives an analog input, the DAC 255 converts the digital I and Q signals into analog signals.

Near-Zero Iintermediate Frequency (NZIF) downconversion enables low sampling rate digital intermediate frequency (DIF) designs for current conversion. Wideband IR mixer 216 is a highly linear mixer and is an important block in RF design. According to this new structure, the receiver can measure the received signal strength indicator (RSSI) for the DSP function, that is, the search function, while optimizing the current consumption.

3 is a flowchart 300 illustrating search mode operation by a wireless mobile station 111 in accordance with a first embodiment of the present invention. Here, it is assumed that the reception passage 210b currently receives a signal according to the first wireless interface standard. Then, the reception passage 210a searches for the signal with the second wireless interface standard based on the set irradiation algorithm. The switch flexure 205 selects any one of the low noise amplifiers 212a-c, which belong to a frequency band conforming to the second wireless interface standard (process step 305). The switch 215 then connects the output of the selected LNA to the input of the wideband IR mixer 216 (process step 310). The VCO and frequency modulated oscillator (block) 218 then oscillate a frequency corresponding to a channel for the frequency band that matches the search algorithm, and the IR mixer 216 downgrades the LNA output through the channel for the frequency band that matches the search algorithm. (Step 315). Blocking BPF 220 is also configured to filter the down-converted signal over a given channel bandwidth (process step 320).

The digital IF section (ie IF mixer 240, NOC 245, filter block 250, resampler 252 and DAC 255) is reconfigured for each mode (e.g. GSM, GPRS, DEGE, CDMA, WCDMA, 802.11, etc.) (Process step 325). A RSSI (Received Signal Strength Indicator) can be installed at the output of the digital channel filter block 250 to confirm its strength (process step 330). If the signal strength at the output of the digital channel filter block 250 exceeds the signal received at the receive passage 210b, the VCO and frequency modulated oscillator (block) 218 lock to the selected channel (process step 335). ). Modem 260 then performs mode identification and reconfigures anti-alias BPF 230.

In the multi-mode, multi-band mobile station according to the first embodiment of the present invention as described above, each of the reception path 210b for receiving the first radio interface standard signal and the reception path 210a for receiving the second radio interface standard signal, respectively. Have band-specific low noise amplifiers. In addition, the multi-mode, multi-band mobile station selects any one input among the low-noise amplifiers for each band provided in the two reception paths to perform communication.

Accordingly, the configuration according to the first embodiment of the present invention can provide a multi-mode, multi-band mobile station (or terminal) that can be used in a wireless network operating under various air interface standards.

On the other hand, the multi-mode, multi-band mobile station according to the second embodiment of the present invention selects any one input of the low-noise amplifier for each band to perform communication, but for a common frequency band for each air interface standard for a common low-noise amplifier It is configured to use.

If the multi-mode, multi-band mobile station according to a second embodiment of the present invention will be described in detail, Figure 4 is a block diagram of a multi-mode, multi-band mobile station according to a second embodiment of the present invention. 4 illustrates an example of a mobile station supporting the WCDMA2000MHz, WCDMA1900MHz, and WCDMA850MHz bands corresponding to the WCDMA service, that is, the GSM850MHz, GSM900MHz, DCS1800MHz, and PCS1900MHz bands corresponding to the second air interface standard, that is, the GSM service. It is shown.

Referring to FIG. 4, the multi-mode, multi-band mobile station according to the second embodiment of the present invention includes a transmitter 410, a receiver 420, a duplexer 430, a switch and a power amplifier module. 440, a first antenna switch 450, and a second antenna switch 460.

The transmitter 410 includes transmitters for each service and frequency band, and transmits signals corresponding to the corresponding communication service and frequency band through the transmitters. The transmitter 410 is, for example, WCDMA2000 transmitter 411, WCDMA1900 transmitter 412, WCDMA850 transmitter 413 for transmitting a radio signal of the first air interface standard of the FDD scheme, and the second air interface standard of the TDD scheme And a DCS1800 / PCS1900 transmitter 414 and a GSM850 / GSM900 transmitter 415 for transmitting wireless signals. The transmitter 410 transmits a signal in the WCDMA2000 MHz band through the WCDMA2000 transmitter 411, transmits a signal in the WCDMA1900 MHz band through the WCDMA1900 transmitter 412, and transmits a signal in the WCDMA850 MHz band through the WCDMA850 transmitter 413. In addition, the DCS1800 / PCS1900 transmitter 414 transmits signals in the DCS1800MHz and PCS1900MHz bands, and the GSM850 / GSM900 transmitter 415 transmits signals in the GSM850MHz and GSM900MHz bands.

The receiver 420 includes receivers for each service and frequency band to support multiple modes and multiple bands. In particular, the same frequency band includes dual receivers having a combined low noise amplifier that can be used interchangeably even if the services are different. . The receiver 420 also includes diversity receivers 470 to support WCDMA diversity.

The receiver 420 may be, for example, a WCDMA2000 receiver 421, a WCDMA / PCS1900 combined receiver 422, a WCDMA / GSM850 combined receiver 423, a DCS1800 receiver 424, a GSM900 receiver 425, and a WCDMA2000 diversity receiver 426. ), A WCDMA1900 diversity receiver 427, and a WCDMA850 diversity receiver 428.

Here, the WCDMA / PCS1900 combined receiver 422 and the WCDMA / GSM850 combined receiver 423 are dual receivers capable of receiving different service signals of the same frequency band. The CDMA2000 diversity receiver 426, the WCDMA1900 diversity receiver 427, and the WCDMA850 diversity receiver 428 are diversity receivers for supporting WCDMA diversity.

The receiver 420 receives one service and frequency band, that is, a signal of the WCDMA2000 MHz band, a signal of the DCS1800 MHz band, and a signal of the GSM900 MHz band through the WCDMA2000 receiver 421, the DCS1800 receiver 424, and the GSM900 receiver 425, respectively. Receive. The receiver 420 receives different service signals of the same frequency band through dual receivers such as the WCDMA / PCS1900 dual receiver 422 and the WCDMA / GSM850 dual receiver 423. That is, the WCDMA / PCS1900 combined receiver 422 receives the WCDMA1900 MHz signal or the PCS1900 MHz band signal, and the WCDMA / GSM850 combined receiver 423 receives the WCDMA850 MHz band signal or the GSM850 MHz band signal. In addition, the receiver 420 receives a diversity signal of the WCDMA2000 MHz band through the WCDMA2000 diversity receiver 426, and receives a diversity signal of the WCDMA1990 MHz band through the WCDMA1900 diversity receiver 427. The WCDMA850 diversity receiver 428 receives a diversity signal of the WCDMA850 MHz band.

The duplexer unit 430 is connected to the WCDMA2000 transmitter 411, the WCDMA1900 transmitter 412, and the WCDMA850 transmitter 413 that use the FDD method among the transmitters of the transmitter 410. It is connected to the WCDMA2000 receiver 421 to be used, the WCDMA / PCS1900 combined receiver 422 and the WCDMA / GSM850 combined receiver 423 which combine the FDD and TDD schemes. The duplexer unit 430 transmits the transmission signals output from the transmitters 411 to 413 and the reception signals corresponding to the WCDMA2000 receiver 421, the WCDMA / PCS1900 combined receiver 422, and the WCDMA / GSM850 combined receiver 423. Separate. In this case, the duplexer unit 430 has been conventionally used to separate a transmission signal and a reception signal only for a frequency division duplex (FDD) method, for example, a WCDMA signal that uses a different frequency band for uplink and downlink. However, in the embodiment of the present invention, since the FDD type signal (WCDMA signal) and the TDD type signal (GSM850 or PCS1900 type) are received by the dual receiver, the FDD type as well as the TDD type receiving unit filter may serve as a filter.

The switch and power amplifier module 440 is connected to the DCS1800 / PCS1900 transmitter 414 and the GSM850 / GSM900 transmitter 415 among the transmitters of the transmitter 410, the DCS1800 receiver 424 among the receivers of the receiver 420, and Is connected to the GSM900 receiver 425. The switch and power amplifier module 440 separates the transmission signals output from the DCS1800 / PCS1900 transmitter 414 and the GSM850 / GSM900 transmitter 415 and the reception signals corresponding to the DCS1800 receiver 424 and the GSM900 receiver 425. . The switch and power amplifier module 440 selects a frequency band to be transmitted between the DCS1800MHz band and the PCS1900MHz band supported by the DCS1800 / PCS1900 transmitter 414, and the GSM850MHz band and the GSM900MHz supported by the GSM850 / GSM 900 transmitter 415. Select the frequency band to transmit from the band. In addition, the switch and power amplifier module 440 amplifies the power of the transmission signal of the DCS1800MHz band and PCS1900MHz band output from the DCS1800 / PCS1900 transmitter 414, and the GSM850MHz band and GSM900MHz band output from the GSM850 / GSM 900 transmitter 415. Amplify the power of the transmission signal.

 The first antenna switch 450 is connected to the duplexer unit 430 switch and the power amplifier module 440, performs switching between the antenna and the duplexer unit 430, and switches between the antenna and the switch and the power amplifier module 440. To perform.

The second antenna switch 460 is connected to each of the diversity receivers 426 to 428 and performs switching between the antenna and the diversity receivers 426 to 428.

According to the second embodiment of the present invention, the multi-mode, multi-band mobile station configured as described above uses one combined receiver for the same frequency band even if the service type, i.e., the mode is different, and only the existing FDD scheme (for example, WCDMA scheme). By using the duplexer used in the TDD scheme (eg GSM850 or PCS1900 scheme), the number of receivers can be reduced compared to the existing multimode, multiband mobile stations.

On the other hand, the multi-mode, multi-band mobile station according to an embodiment of the present invention may be configured to support all mobile communication services and frequency bands used worldwide, and the mobile communication service used in a specific region (country) It may be configured to support a frequency band.

5 is a table illustrating a service and a frequency band supported by a multi-mode, multi-band mobile station according to an embodiment of the present invention. Referring to FIG. 5, the world type represents a case in which a multi-mode, multi-band mobile station supports all mobile communication services and frequency bands used worldwide. The European type indicates a case in which a multi-mode, multi-band mobile station supports a mobile communication service and a frequency band corresponding to a European region according to an embodiment of the present invention. The US type represents a case in which a multi-mode, multi-band mobile station supports a mobile communication service and a frequency band corresponding to a US region according to an embodiment of the present invention.

First, a case in which a multi-mode, multi-band mobile station is implemented in a global manner according to the second embodiment of the present invention will be described. When the multi-mode, multi-band mobile station is implemented worldwide, the WCDMA2000MHz, WCDMA1900MHz, WCDMA850MHz bands, GSM / GPRS / EDGE1900MHz, GSM / GPRS / EDGE850MHz, and the most popular bands are used as the main receivers. The GSM / GPRS / EDGE1800MHz, GSM / GPRS / EDGE900MHz band, and the diversity band use a sub receiver.

FIG. 6 is a diagram illustrating a case where a multi-mode, multi-band mobile station according to the second embodiment of the present invention is implemented globally. 6 is an exemplary circuit diagram of a multi-mode, multi-band mobile station according to a second embodiment of the present invention.

Referring to FIG. 6, the transmitter 610 may include a WCDMA2000 transmitter 611, a WCDMA1900 transmitter 612, and a WCDMA850 transmitter 613 for transmitting a FDD wireless signal, and a DCS1800 / for transmitting a TDD wireless signal. PCS1900 transmitter 614, GSM900 / GSM850 transmitter 615. The transmitters 611 to 615 each include five amplifiers (PPAs) for amplifying the power of the transmission signal.

The receiver 620 receives WCDMA2000 MHz, WCDMA 1900 MHz, WCDMA 850 MHz, GSM / GPRS / EDGE (PCS) 1900 MHz, GSM / GPRS / EDGE (GSM) 850 MHz, GSM / GPRS / EDGE 1800 MHz, and GSM / GPRS / EDGE 900 MHz bands that are used worldwide. Receivers. At this time, the receiver 620 includes individual receivers for receiving the signal for each mode and frequency band as described above, but the service is different but the PCS1900MHz band corresponding to the WCDMA1900MHz band and the GSM / GPRS / EDGE900MHz band, which are the same frequency band. A dual receiver is used for the GSM850MHz band corresponding to the WCDMA850MHz band and the GSM / GPRS / EDGE850MHz band. In addition, the receiver 620 includes diversity receivers for supporting diversity in the WCDMA2000 MHz, WCDMA 1900 MHz, and WCDMA850 MHz bands.

Accordingly, the receiver 620 may include a WCDMA2000 receiver 621, a WCDMA / PCS1900 combined receiver 622, a WCDMA / GSM850 combined receiver 623, a DCS1800 receiver 624, a GSM850 receiver 625, and a WCDMA2000 diversity receiver 626. And a WCDMA1900 diversity receiver 627 and a WCDMA850 diversity receiver 628.

The WCDMA2000 receiver 621 includes a first LNA 21 that amplifies the low signal received via the antenna in accordance with the WCDMA2000 service.

The WCDMA / PCS1900 combined receiver 622 includes a second LNA 22 that amplifies a low signal received through an antenna according to the WCDMA1900 service scheme or the GSM / GPRS / EDGE1900 service scheme, that is, the PCS1900 service scheme. The WCDMA / GSM850 combined receiver 623 includes a third LNA 23 that amplifies a low signal received through the main antenna according to the WCDMA850 service method or the GSM / GPRS / EDGE850 service method, that is, the GSM850 service method. The DCS1800 receiver 624 passes a received signal of the DCS1800 MHz band received through the main antenna, and a bandpass filter 14 for preventing the leakage signal of the transmitted signal from passing through, and amplifying the received signal of the DCS1800 MHz band. A fourth LNA 24.

The GSM900 receiver 625 passes a received signal of the GSM900MHz band received through the main antenna, and a bandpass filter 15 which prevents the leakage signal of the transmitted signal from passing through, and amplifies the received signal of the GSM900MHz band. A fifth LNA 25.

Each of the diversity receivers 670 passes the signals of the diversity reception band received from the sub-antenna and prevents leakage of the transmission signal from passing through the bandpass filters 16 to 18. LNAs 26-28 that amplify the signal.

The duplexer unit 630 includes a first duplexer 631 connected to the WCDMA2000 transmitter 611 and the WCDMA2000 receiver 621, and a second duplexer 632 connected to the WCDMA1900 transmitter 612 and the WCDMA / PCS1900 combined receiver 622. ). It also includes a third duplexer 633 connected to the WCDMA850 transmitter 613 and the WCDMA / GSM850 combined receiver 623. The first duplexer 631 outputs the WCDMA2000 MHz transmission signal output from the WCDMA2000 transmitter 611 to the antenna, and outputs the WCDMA2000 MHz reception signal to the WCDMA2000 receiver 621. The second duplexer 632 outputs the WCDMA 1900 MHz transmission signal output from the WCDMA 1900 transmitter 612 to the main antenna, and outputs the WCDMA / PSC 1900 MHz reception signal to the WCDMA / PCS1900 combined receiver 622. The third duplexer 633 outputs the WCDMA850 MHz transmission signal output from the WCDMA850 transmitter 613 to the main antenna, and outputs the WCDMA / GSM850 MHz reception signal to the WCDMA / GSM850 combined receiver 623.

The switch and power amplifier module 640 is connected to the DCS1800 / PCS1900 transmitter 614 and the GSM850 / GSM900 transmitter 615 among the transmitters of the transmitter 610, and the DCS1800 receiver 624 among the receivers of the receiver 620. Is connected to the GSM900 receiver 625. The switch and power amplifier module 640 includes a transmission and reception and band selection switch 641 for selecting transmission and reception of each transmission and reception signal, and a first power amplifier 642 and a second power for amplifying the power of each transmission signal. An amplifier 643 is included.

The transmission and reception and band selection switch 641 selectively outputs transmission signals of the DCS1800 / PCS1900 MHz band and transmission signals of the GSM850 / GSM900 MHz band from the DCS1800 / PCS1900 transmitter 614 and the GSM850 / GSM900 transmitter 615 to the antenna. Switching is performed. In addition, the transmission / reception and band selection switch 641 performs switching for outputting the DCS1800 MHz band received signal and the GSM900 MHz band received signal received through the main antenna to the corresponding DCS1800 receiver 624 and GSM900 receiver 625, respectively. do. The transmit / receive and band selection switch 641 selects a frequency band to be transmitted from the DCS1800 MHz band and the PCS1900 MHz band supported by the DCS1800 / PCS1900 transmitter 614, and the GSM850 MHz band and the GSM900 MHz band supported by the GSM850 / GSM900 transmitter 615. Switching to select a frequency band to be transmitted. The first power amplifier 642 amplifies the power of the transmission signal of the DCS1800MHz band and the PCS1900MHz band output from the DCS1800 / PCS1900 transmitter 614. The second power amplifier 643 amplifies the power of the transmission signal of the GSM850MHz band and the GSM900MHz band output from the GSM850 / GSM 900 transmitter 615.

The first antenna switch 650 is connected to the duplexer unit 630 and the switch and power amplifier module 640, performs switching between the main antenna and the duplexer unit 630, and switches the main antenna and the switch and power amplifier module ( Switch between 640.

The second antenna switch 660 is connected to the respective diversity receivers 626 to 628 and performs switching between the sub antennas and the diversity receivers 626 to 628.

The first mixer 680 is connected to each of the WCDMA2000 receiver 621, the WCDMA1900 / PCS1800 combined receiver 622, and the WCDMA / GSM850 combined receiver 623 of the main reception band, and each receiver 621 to 633. Converts the frequency of the high band received by the frequency of the low band.

The second mixer 690 is connected to the DCS1800 receiver 624, the GSM900 625, and the diversity receivers 626 to 628 of the sub reception band, respectively, and is received by the receivers 624 to 628 of each sub band. The high frequency band is converted into the low band frequency.

As described above, the multi-mode, multi-band mobile station implemented globally according to the second embodiment of the present invention has a different service (WCDMA / GSM / GPRS / EDGE), but also combines signals of the same frequency band (1900 MHz or 850 MHz). Use a combined receiver to receive. Among the receivers of the receiver 320, the WCDMA / PCS1900 combined receiver 622 and the WCDMA / GSM850 combined receiver 623 are combined receivers. When the second LNA 22 of the WCDMA / PCS1900 combined receiver 622 receives the WCDMA1900 signal, the second LNA 22 amplifies the received signal according to the WCDMA1900 service method, and when receiving the PCS1900 signal, amplifies the received signal according to the PCS1900 service method. do. The third LNA 23 of the WCDMA / GSM850 combined receiver 623 amplifies the received signal according to the WCDMA850 service method when receiving the WCDMA850 signal, and amplifies the received signal according to the GSM850 service method when receiving the GSM850 signal. do.

In the first embodiment of the present invention, a separate LNA must be used for each service by using an LNA that amplifies a received signal of a single service method. However, in the second embodiment of the present invention, as described above, the combined LNAs 22 and 23 capable of amplifying together the received signals (WCDMA signal or PCS signal, WCDMA signal or GSM signal) of different service methods in the same band. Using LNA reduces the number of LNAs and does not require separate receivers for each service.

In addition, the multi-mode, multi-band mobile station according to the second embodiment of the present invention as described above, the mixers required for the receivers 621 to 623 of the main reception band and the receivers 624 to 628 of the sub reception band, respectively. The use of integrated mixers 680 and 690 allows less mixer to be consumed.

Meanwhile, in the above description, a multi-mode, multi-band mobile station supporting a frequency service and a frequency band used around the world has been described as an example. However, since the European region does not provide communication services in the WCDMA 1900 MHz band and the WCDMA850 MHz band, transceivers in the WCDMA 1900 MHz band and the WCDMA850 MHz band are unnecessary.

Therefore, the following provides a multi-mode, multi-band mobile station supporting the WCDMA 2000MHz band, PCS1900MHz band, DCS1800MHz band, GSM900MHz band, GSM850MHz band used in Europe.

In particular, as shown in FIG. 5, in Europe, the WCDMA2000 MHz band is the main reception band, and the PCS1900 MHz band, the DCS1800 MHz band, the GSM900 MHz band, and the GSM850 MHz band are the sub reception bands. Accordingly, the European multi-mode, multi-band mobile station according to the second embodiment of the present invention receives a WCDMA2000 receiver as a main receiver, and uses a PCS1900 MHz band, a DCS1800 MHz band, a GSM900 MHz band, a GSM850 MHz band, and a diversity band as sub-receivers. Explain.

7 is a diagram illustrating a European multi-mode, multi-band mobile station according to an embodiment of the present invention. 7 is a detailed circuit diagram of a European multi-mode, multi-band mobile station according to an embodiment of the present invention.

Referring to FIG. 7, the transmitter 710 of the European multi-mode, multi-band mobile station according to an embodiment of the present invention includes a WCDMA2000 transmitter 711, a DCS1800 / PCS1900 transmitter 712, and a GSM900 / GSM850 transmitter 713. do. These transmitters 711 to 713 output transmission signals corresponding to their service and frequency bands, respectively.

The receiver 720 receives the WCDMA2000 MHz, GSM / GPRS / EDGE (PCS) 1900 MHz, GSM / GPRS / EDGE (GSM) 850 MHz, GSM / GPRS / EDGE (DCS) 1800 MHz, and GSM / GPRS / EDGE (GSM) 900 MHz bands. Receivers.

That is, the receiver 720 includes a WCDMA2000 receiver 721, a PCS1900 receiver 722, a GSM850 receiver 723, a DCS1800 receiver 724, a GSM900 receiver 725, and a WCDMA2000 (D) diversity receiver 726. Can be.

The WCDMA2000 receiver 721 includes an LNA 61 that amplifies a low signal received via the main antenna in accordance with WCDMA2000 service.

The PCS1900 receiver 722 passes a received signal of the PCS1900 MHz band received through the main antenna, and a band pass filter 52 for preventing a leakage signal due to the transmitted signal from passing through, and amplifying the received signal of the received PCS1900 MHz band. LNA 62. The LNA 62 is a dual LNA that amplifies the WCDMA 1900 MHz signal and the PCS 1900 MHz signal. However, in the European type according to the embodiment of the present invention, the LNA 62 does not need to receive the WCDMA 1900 MHz signal.

The GSM850 receiver 723 passes a received signal of the GSM850MHz band received through the main antenna, and a bandpass filter 53 for preventing the leakage signal of the transmitted signal from passing through, and amplifying the received signal of the GSM850MHz band. LNA 63. The LNA 63 is a dual LNA that amplifies the WCDMA850 MHz signal and the GSM850 MHz signal in combination, but the European type according to the embodiment of the present invention does not need to receive the WCDMA850 MHz signal, and thus operates to amplify only the GSM850 MHz signal.

The DCS1800 receiver 724 passes a received signal of the DCS1800 MHz band received through the main antenna, and a bandpass filter 54 for preventing the leakage signal of the transmitted signal from passing through, and amplifying the received signal of the DCS1800 MHz band. LNA 64.

The GSM900 receiver 725 passes a received signal of the GSM900MHz band received through the main antenna, and a bandpass filter 55 for preventing the leakage signal of the transmitted signal from passing through, and amplifying the received signal of the GSM900MHz band. LNA 65 is included.

The WCDMA2000 diversity receiver 726 passes a diversity signal of the WCDMA2000 MHz band received from the sub-antenna, and a bandpass filter 56 for preventing leakage of the transmission signal from passing through the WCDMA2000 diversity receiver 726 and amplifying the diversity signal. LNA 66.

The duplexer unit 730 includes a duplexer 731 connected to the WCDMA2000 transmitter 711 and the WCDMA2000 receiver 721. The duplexer 731 outputs the WCDMA2000 MHz transmission signal output from the WCDMA2000 transmitter 711 to the main antenna, and outputs the WCDMA2000 MHz reception signal to the WCDMA2000 receiver 721.

The switch and power amplifier module 740 includes a DCS1800 / PCS1900 transmitter 712, a GSM850 / GSM900 transmitter 713, a transmitter 710, a PCS1900 receiver 722, a GSM850 receiver 723, a DCS1800 receiver of the receiver 720. 724, GSM900 receiver 725, and WCDMA2000 diversity receiver 726, respectively. The switch and power amplifier module 740 includes a transmission and reception and band selection switch 741 for selecting transmission and reception of each transmission and reception signal, and a first power amplifier 742 and a second power for amplifying the power of each transmission signal. An amplifier 743.

The transmission / reception and band selection switch 741 is a transmission signal output from the DCS1800 / PCS1900 transmitter 712 and the GSM850 / GPRS900 transmitter 713, and each PCS1900 receiver 722, GSM850 receiver 723, DCS1800 receiver 724, GSM900 The reception signals corresponding to the receiver 725 and the WCDMA2000 diversity receiver 726 are separated. The transmit / receive and band selection switch 741 selects a frequency band to be transmitted from the DCS1800 MHz band and the PCS1900 MHz band supported by the DCS1800 / PCS1900 transmitter 712, and the GSM850 MHz band and the GSM900 MHz band supported by the GSM850 / GSM900 transmitter 713. Select the frequency band to transmit. In addition, the first power amplifier 742 amplifies the power of the transmission signal of the DCS1800MHz band and the PCS1900MHz band output from the DCS1800 / PCS1900 transmitter 714. The second power amplifier 743 amplifies the power of the transmission signal of the GSM850MHz band and GSM900MHz band output from the GSM850 / GSM 900 transmitter 715.

The first antenna switch 750 is connected to the duplexer unit 730 and the switch and power amplifier module 740, and performs switching between the main antenna and the duplexer unit 730 and the switch and power amplifier module 740.

The first mixer 780 is connected to a WCDMA2000 receiver 721 for receiving a signal of a main reception band, and converts a high band frequency received through the WCDMA2000 receiver 721 into a low band frequency.

The second mixer 790 is connected to the DCS1900 receiver 722, the GSM850 receiver 723, the DCS1800 receiver 724, the GSM900 receiver 725, and the WCDMA2000 diversity receiver 726 for receiving signals in the sub receive band. The high frequency band received by the receivers 722 to 726 is converted into a low band frequency.

As described above, in the European-type multi-mode, multi-band mobile station according to an embodiment of the present invention, the LNA 62 is a combined LNA that amplifies a WCDMA 1900 MHz signal and a PCS 1900 MHz signal but is used to amplify only a PCS 1900 MHz signal since the WCDMA 1900 MHz signal is not used. In addition, the LNA 63 is a combined LNA that amplifies the WCDMA850MHz signal and the GSM850 MHz signal in combination but is used to amplify only the GSM850MHz signal since the WCDMA850MHz signal is not used.

In addition, the European multi-mode, multi-band mobile station according to an embodiment of the present invention is a mixer of the receiver 721 of the main reception band and the mixers of the receivers 722 to 726 of the sub reception band, respectively. By using, it takes less mixer.

Meanwhile, as shown in FIG. 5, in the US, WCDMA 1900 MHz, WCDMA 850 MHz, GSM / GPRS / EDGE (PCS) 1900 MHz, GSM / GPRS / EDGE (GSM) 850 MHz bands are the main reception bands, and GSM / GPRS / EDGE (DCS). The 1800 MHz, GSM / GPRS / EDGE (GSM) 900 MHz band is the sub receive band. Accordingly, in the US multi-mode, multi-band mobile station according to an embodiment of the present invention, a case in which a WCDMA1900 WCDMA850, PCS1900, and GSM850 receiver is used as a main receiver, and a DCS1800, GSM900 receiver, and a diversity receiver are used as sub-receivers will be described. do.

8 is a diagram illustrating a US multi-mode, multi-band mobile station according to an embodiment of the present invention. FIG. 8 is an exemplary circuit diagram illustrating a US multi-mode, multi-band mobile station according to an embodiment of the present invention.

Referring to FIG. 8, the transmitter 810 of a US multi-mode, multi-band mobile station according to an embodiment of the present invention includes a WCDMA1900 transmitter 811, a WCDMA850 transmitter 812, a DCS1800 / PCS1900 transmitter 813, and a GSM900 / GSM850. A transmitter 814. These transmitters 811 to 814 output transmission signals corresponding to their service and frequency bands, respectively.

The receiver 820 includes the WCDMA 1900 MHz, WCDMA 850 MHz, GPS / GPRS / EDGE (PCS) 1900 MHz, GPS / GPRS / EDGE (GSM) 850 MHz, GPS / GPRS / EDGE (DCS) 1800 MHz, and GPS / GPRS / EDGE (GSM) 900 MHz bands. Receivers for receiving the signal and diversity signals in the WCDMA 1900 MHz and WCDMA 850 MHz bands.

The receiver 820 includes a WCDMA / PCS1900 combined receiver 821, a WCDMA / GSM850 combined receiver 822, a DCS1800 receiver 823, a GSM900 receiver 824, a WCDMA1900 (D) diversity receiver 825, and a WCDMA850 (D). ) May be configured as a diversity receiver 826.

The WCDMA / PCS1900 combined receiver 821 includes an LNA 81 that amplifies a low signal received through the main antenna according to the WCDMA1900 service scheme or the GSM / GPRS / EDGE (PCS) 1900 service scheme. The WCDMA / GSM850 combined receiver 822 includes an LNA 82 which amplifies a low signal received through a main antenna according to the WCDMA850 service scheme or the GSM / GPRS / EDGE (GSM) 850 service scheme.

The DCS1800 receiver 823 passes a received signal of the DCS1800 MHz band received through the main antenna, and a band pass filter 73 for preventing a leakage signal due to the transmitted signal from passing through, and amplifies the received signal of the received DCS1800 MHz band. LNA 83.

The GSM900 receiver 824 passes a received signal of the GSM900MHz band received through the main antenna, and a bandpass filter 74 for preventing the leakage signal of the transmitted signal from passing through, and amplifying the received signal of the GSM900MHz band. LNA 84 is included.

The WCDMA 1900 (D) diversity receiver 825 passes the WCDMA 1900 MHz diversity signal received from the sub-antenna, blocks the leakage signal caused by the transmission signal, and amplifies the received WCDMA 1900 MHz diversity signal. LNA 85.

The WCDMA850 (D) diversity receiver 826 passes a WCDMA850 MHz diversity signal received from the sub-antenna, blocks a leakage signal caused by the transmission signal, and amplifies the received WCDMA850 MHz diversity signal. LNA 86.

The duplexer unit 830 is a first duplexer 831 connected to the WCDMA1900 transmitter 811 and the WCDMA / PCS1900 combined receiver 821, and a second duplexer 831 connected to the WCDMA850 transmitter 812 and the WCDMA / GSM850 combined receiver 822. A duplexer 832.

The first duplexer 831 outputs a WCDMA 1900 MHz transmission signal output from the WCDMA 1900 transmitter 811 to the main antenna, and outputs a WCDMA 1900 MHz reception signal or a PCS1900 MHz signal received through the main antenna to the WCDMA / PCS1900 combined receiver 821.

The second duplexer 832 outputs a WCDMA850 MHz transmission signal output from the WCDMA850 transmitter 812 to the main antenna, and outputs a WCDMA850 MHz reception signal or GSM850 MHz signal received through the main antenna to the WCDMA / GSM850 combined receiver 822.

The switch and power amplifier module 840 is connected to the DCS1800 / PCS1900 transmitter 813, the GSM850 / GSM900 transmitter 814 of the transmitter 810, the DCS1800 receiver 823 and the GSM900 receiver 824 of the receiver 820, respectively. . The switch and power amplifier module 840 includes a transmission and reception and band selection switch 841 for selecting transmission and reception of each transmission and reception signal and a band, and a first power amplifier 842 and a second power for amplifying the power of each transmission signal. An amplifier 843.

The transmission / reception and band selection switch 841 selectively outputs transmission signals of the DCS1800 / PCS1900 MHz band and transmission signals of the GSM850 / GSM900 MHz band from the DCS1800 / PCS1900 transmitter 813 and the GSM850 / GSM900 transmitter 814 to the antenna. Switching is performed. The transmission / reception and band selection switch 841 performs switching for outputting a DCS1800 MHz band received signal and a GSM900 MHz band received signal received through the main antenna to the corresponding DCS1800 receiver 823 and GSM900 receiver 824, respectively. do. The transmit / receive and band selection switch 841 selects a frequency band to be transmitted from the DCS1800 MHz band and the PCS1900 MHz band supported by the DCS1800 / PCS1900 transmitter 813, and the GSM850 MHz band and the GSM900 MHz band supported by the GSM850 / GSM900 transmitter 814. Switching to select a frequency band to be transmitted. The first power amplifier 842 amplifies the power of the transmission signal of the DCS1800MHz band and the PCS1900MHz band output from the DCS1800 / PCS1900 transmitter 813. The second power amplifier 843 amplifies the power of the transmission signal of the GSM850MHz band and GSM900MHz band output from the GSM850 / GSM 900 transmitter 814.

The first antenna switch 850 is connected to the duplexer 530 and the transmission / reception and band selection switch 840, and performs switching between the main antenna, the duplexer 830, the switch, and the power amplifier module 840.

The second antenna switch 860 is connected to each of the diversity receivers 825 to 826 and performs switching between the sub antennas and the diversity receivers 825 to 826.

The first mixer 880 is connected to the WCDMA 1900 MHz, WCDMA 850 MHz, PCS 1900 MHz, and GSM 850 MHz bands, that is, the receivers 821 to 822 receiving the main reception band, and converts the frequency of the high band of each of the main reception band signals into a low band frequency. To convert.

The second mixer 890 is connected to the receivers 833 to 826 receiving the signals of the DCS1800 MHz and GSM900 MHz bands and the sub receiving bands of the diversity bands of the WCDMA1900 MHz and WCDMA850 MHz bands, respectively, and the high band of each of the sub receive band signals. Convert the frequency of to low frequency.

As described above, the U.S.-type multi-mode, multi-band mobile station according to the embodiment of the present invention has a different WCDMA / WCDMA / DCS or GSM signal, but combines the same frequency band (1900 MHz or 850 MHz). The PCS1900 combined receiver 821 and the WCDMA / GSM850 combined receiver 822 are used. The LNA 81 of the WCDMA / PCS1900 combined receiver 821 amplifies the received signal according to the WCDMA1900 service method when receiving the WCDMA1900 signal, and amplifies the received signal according to the PCS1900 service method when receiving the PCS1900 signal. The LNA 82 of the WCDMA / GSM850 combined receiver 822 amplifies the received signal according to the WCDMA850 service method when receiving the WCDMA850 signal, and amplifies the received signal according to the GSM850 service method when receiving the GSM850 signal. As described above, according to the exemplary embodiment of the present invention, dual LNAs 81 and 82 capable of amplifying received signals (WCDMA signal or PCS signal, WCDMA signal, or GSM signal) having different air interface standards in the same band as described above. Using LNA reduces the number of LNAs and does not require separate receivers for each service.

In addition, the US multi-mode, multi-band mobile station according to an embodiment of the present invention is WCDMA1900MHz, WCDMA850MHz, PCS1900MHz, GSM850MHz band, that is, the WCDMA / PCS1900 combined receiver 821 corresponding to the main reception band and WCDMA / GSM850 combined receiver 822 The SAW filters 91 to 92 are used to improve the reception sensitivity of the main reception band.

In addition, as described above, the U.S.-type multi-mode, multi-band mobile station according to an embodiment of the present invention uses a mixer of the receivers 821 to 822 of the main reception band and mixers of the receivers 833 to 826 of the sub receive band. By using one mixer 880 and 890 each, less mixer is required.

Hereinafter, the signal reception operation of the multi-mode, multi-band mobile station according to the second embodiment of the present invention will be described in detail.

9 is a diagram illustrating a reception operation of a multi-mode, multi-band mobile station according to a second embodiment of the present invention. FIG. 9 is a diagram illustrating components for a reception operation, a base band processor, and a modem unit among components of a multi-mode, multi-band mobile station according to a second embodiment of the present invention.

Referring to FIG. 9, the modem unit 990 outputs a switch control signal and an SPI signal for receiving a desired band signal of a desired mode among multi-mode and multi-band signals.

The switch control signal includes a first switch control signal for controlling the first antenna switch 910, a second switch control signal for controlling the second antenna switch 920, and a third switch for controlling transmission and reception and a band selection switch. It includes a control signal.

The first switch control signal is a reception mode (WCDMA, GSM) of the main reception signal among the multi-mode and multi-band signals, a control signal for selecting a reception frequency band, and is applied to the first antenna switch 910. The second switch control signal is a signal for frequency band selection in the GSM mode in which the reception mode is selected as the GSM mode by the first switch control signal and is applied to the transmission and reception and the band selection switch 940. The third switch control signal is a signal for selecting whether to receive WCDMA diversity and is applied to the second antenna switch 920.

 The first antenna switch 910 performs a switching operation according to the first switch control signal to connect a duplexer of a corresponding mode and band among the duplexers of the first antenna and the duplexer unit 930, or transmit and receive a band and a band of the first antenna. Connect the selector switch 940. The duplexer unit 930 includes duplexers for receiving each band of the WCDMA mode, and duplexers for receiving each band of the WCDMA / GSM combined mode. Duplexers for receiving each band in the WCDMA mode, when connected to the first antenna, forward the signal received from the first antenna to the WCDMA receiver 952. The duplexers for receiving the WCDMA / GSM combined mode band, when connected to the first antenna, transmit the combined band signal of the WCDMA or GSM mode received from the first antenna to the WCDMA / GSM combined receiver 954.

 The transmission / reception and band selection switch 940 connects the first antenna switch 910 and the GSM receiver of the corresponding band according to the second switch control signal so that a signal received through the first antenna passes through the first antenna switch 910. To the GSM receiver 956 of the corresponding band.

The second antenna switch 920 selects whether to receive a WCDMA diversity signal according to the third switch control signal. When the second antenna switch 920 is selected to receive the WCDMA diversity signal, the second antenna switch 920 connects the second antenna and the corresponding band receiver of the WCDMA diversity receiver 958 to receive the WCDMA diversity signal received through the second antenna. To the city receiver 958.

Each of the WCDMA receiver 952, the WCDMA / GSM combined receiver 954, the GSM receiver 956, and the WCDMA diversity receiver 958 receive a signal for a corresponding mode and band, and transmit the received signal to the corresponding mode and band. Low noise amplification is output in a suitable manner.

The baseband processor 980 is configured to select the WCDMA / GSM receiver 954, the GSM receiver 956, or the WCDMA diversity receiver 958 according to the SPI signal from the modem unit 990. Only one receiver is controlled to operate.

In addition, when the baseband processor 980 receives a mode and band signal that it wants to receive through the WCDMA / GSM combined receiver 954, the baseband processor 980 receives the WCDMA / GSM combined receiver 954 according to whether the received signal is a WCDMA signal or a GSM signal. Adjusts the low noise amplification gain. For example, if the signal received through the WCDMA / GSM combined receiver 954 is a WCDMA signal, the baseband processor 980 adjusts the low noise amplification gain of the WCDMA / GSM combined receiver 954 to a gain corresponding to the WCDMA mode. Outputs an amplification gain adjustment signal. If the received signal is a GSM signal, the baseband processor 980 outputs a low noise amplification gain control signal for adjusting the low noise amplification gain of the WCDMA / GSM combined receiver 954 to a gain corresponding to the GSM mode.

In addition, the baseband processor 980 adjusts the first local frequency LO1 provided to the first mixer 960 or the second local frequency LO2 provided to the second mixer 970 according to the SPI signal. For example, the baseband processor 980 adjusts the first local frequency to the corresponding WCDMA channel frequency when the mode and band signal to be received according to the SPI signal is the WCDMA mode band signal received through the WCDMA receiver 952. The baseband processor 980 transmits the first local frequency to the WCDMA channel corresponding to the first local frequency when the mode and band signal to be received according to the SPI signal is the WCDMA / GSM combined mode band signal received through the WCDMA / GSM combined receiver 954. Adjust to frequency or GSM channel frequency. The baseband processor 980 adjusts the second local frequency to the corresponding GSM channel frequency when the mode and band signal to be received according to the SPI signal is the GSM mode band signal received through the GSM receiver 952.

The first mixer 960 down-converts the low noise amplified signal from the WCDMA receiver 952, the WCDMA / GSM combined receiver 954, that is, the main band receivers, using the first local frequency adjusted for each mode and band. . In addition, the second mixer 980 downconverts the low noise amplified signal from the GSM receiver 956 and the WCDMA diversity receiver 958, that is, the subband receivers, using the first local frequency adjusted for each mode and band. .

The baseband processor 980 converts the down-converted signals from the first mixer 960 and the second mixer 970 into first and second baseband signals, respectively, and converts the converted first and second baseband signals. It is classified into WCDMA baseband signal and GSM baseband signal.

The modem unit 990 demodulates each of the WCDMA baseband signal and the GSM baseband signal output from the baseband processing unit 980 using a corresponding modem.

In other words, according to the signal reception operation of the multi-mode, multi-band mobile station according to the second embodiment of the present invention as described above, the modem unit 990 may select a desired band signal of a desired mode among the multi-mode and multi-band signals. Outputs switch control signal and SPI signal for receiving.

Then, the first antenna switch 910, transmission and reception and band selection switch 940, and the second antenna switch 920 according to the switch control signal from the modem unit 990, respectively receive mode (WCDMA, GSM) and reception frequency Switching is performed to select a band, a frequency band, and whether or not to receive WCDMA diversity when the reception mode is the GSM mode.

In addition, the baseband processor 980 controls only one receiver corresponding to a mode and band desired to be received among receivers in each mode and band according to the SPI signal from the modem unit 990. The baseband processor 980 converts the received signal into a baseband signal and outputs the baseband signal according to whether the baseband signal is a WCDMA baseband signal or a GSM baseband signal.

Accordingly, the modem unit 990 demodulates each of the WCDMA baseband signal and the GSM baseband signal output from the baseband processor 980 using the corresponding modem.

Hereinafter, the signal reception operation of the multi-mode, multi-band mobile station according to the second embodiment of the present invention will be described in more detail.

FIG. 10 is a diagram illustrating in more detail the configuration of the baseband processor 980 and the modem unit 990 for performing a signal reception operation of a multi-mode, multi-band mobile station according to a second embodiment of the present invention.

FIG. 10 shows an example in which a multi-mode, multi-band mobile station supports WCDMA200, WCDMA1900, WCDMA850, DCS1800, PCS1900, GSM900, and GSM850 signals according to the second embodiment of the present invention.

Referring to FIG. 10, the transmitter 610, the receiver 320, the duplexer 630, the switch and power amplifier module 640, the first antenna switch 650, the second antenna switch 660, and the first mixer. 680 and second mixer 690 are similar to those described above in FIG. Therefore, hereinafter, the transmitter 610, the receiver 320, the duplexer 630, the switch and power amplifier module 640, the first antenna switch 650, the second antenna switch 660, and the first mixer 680. ), The second mixer 690 is described with reference to FIG. 6 and detailed description thereof is omitted. The configuration and operation of the baseband processor 980 and the modem unit 990 will be mainly described.

First, the modem controller 991 of the modem unit 990 is a first to third switch for receiving a desired mode and band signal among multi-mode, multi-band signals such as WCDMA200, WCDMA1900, WCDMA850, DCS1800, PCS1900, GSM900, and GSM850 signals. The control signals SWC1, SWC2, and SWC3 are output.

The first switch control signal SWC1 is a control signal for selecting a reception mode (WCDMA, GSM) to receive from among WCDMA200, WCDMA1900, WCDMA850, DCS1800, PCS1900, GSM900, and GSM850 signals.

The first antenna switch 650 connects the duplexer of the corresponding mode and band among the first antenna and the first to third duplexers 631 to 633 of the duplexer unit 630 according to the first switch control signal SWC1. Alternatively, the receiver corresponding to the desired reception mode and band is selected by connecting the first antenna to the transmission / reception and band selection switch 640.

For example, when a first switch control signal for receiving a signal of the GSM850 band is input, the first antenna switch 650 connects the first antenna and the third duplexer 633 to receive the GSM 850 received through the first antenna. The signal is forwarded to the WCDMA / GSM850 dual receiver 623. In addition, when the first switch control signal for receiving the signal of the DCS1800 band is input, the first antenna switch 650 connects the first antenna to the transmission and reception and the band selection switch 641 to receive the signal received through the first antenna. And transmits to the DCS1800 receiver 624 through a transmission / reception and band selection switch 641.

The transmission and reception and band selection switch 640 connects the first antenna switch 650 and the GSM receiver of the corresponding band according to the second switch control signal SWC2 so that a desired GSM receiver is selected among the GSM receivers. For example, when the second switch control signal for receiving the GSM900 band signal is input, the transmission / reception and band selection switch 640 connects the first antenna switch 650 and the GSM900 receiver 625 to the first antenna ( The signal received via 650 is passed to the GSM900 receiver 625.

 The second antenna switch 660 performs a switching operation of connecting and releasing a corresponding band receiver of the second antenna and the WCDMA diversity receiver 370 according to the third switch control signal SWC3 to determine whether the WCDMA diversity signal is received. To be selected.

On the other hand, the modem controller 991 of the modem unit 990 outputs the first to third switch control signals for receiving the desired mode and band signals as described above, and at the same time the SPI signal for processing the received signal. Output to the baseband processor 980.

The baseband processor 980 includes a controller 982, a first baseband processor 984, a second baseband processor 986, and a multiplexer 988.

The controller 982 controls to operate only a receiver corresponding to a mode and a band desired to be received among the receivers 621 to 628 for each mode and band according to the SPI signal from the modem controller 991. For example, if the signal to be received is the WCDMA2000 band, the controller 982 controls only the WCDMA2000 receiver 621 and the WCDMA (D) 2000 receiver 626 to operate according to the SPI signal from the modem controller 991. In addition, if the signal to be received is a GSM850 band, the controller 982 controls only the WCDMA / GSM850 combined receiver 622 to operate according to the SPI signal from the modem controller 991.

The controller 982 adjusts the low noise amplification gain of the WCDMA / GSM combined receiver to either the WCDMA or GSM gain when the signal to be received is the WCDMA / GSM combined band according to the SPI signal from the modem controller 991. Outputs a control signal. For example, when the signal to be received is one of the WCDMA / PCS1900 bands, the controller 982 may use the gain of the LNA 22 of the WCDMA / PCS1900 dual receiver 622 to correspond to either the WCDMA1900 or PCS1900 band. Output LC1 signal for adjustment with. In addition, when the signal to be received is any one of the WCDMA / GSM850 bands, the controller 982 adjusts the gain of the LNA 23 of the WCDMA / GSM850 combined receiver 623 to a gain corresponding to one of the WCDMA850 or GSM850 bands. The LC2 signal to be outputted.

Under the control of the controller 982 as described above, the receivers 621 to 628 for each mode and band low-amplify a signal corresponding to their own band. In particular, the WCDMA / PCS1900 combined receiver 622 and the WCDMA / GSM850 combined receiver 623 adjust the LNA gain to the gain corresponding to the WCDMA or the gain corresponding to the GSM according to the LC1 and LC2 signals from the controller 982. Amplify low noise signal or GSM signal.

11 illustrates a method in which the WCDMA / PCS1900 dual receiver 622 and the WCDMA / GSM850 dual receiver 623 adjust the LNA gain to the gain corresponding to the WCDMA or the gain corresponding to the GSM, respectively. Referring to FIG. 11, when the WCDMA / PCS1900 combined receiver 622 and the WCDMA / GSM850 combined receiver 623 receive a WCDMA signal, the WCDMA signal reception strengths P1 and P2 are illustrated in FIG. 11A. Adjust the low-noise amplification gain in three steps. In addition, the WCDMA / PCS1900 combined receiver 622 and the WCDMA / GSM850 combined receiver 623 receive a low noise amplification gain according to the GSM signal reception strengths P3 and P4 as shown in FIG. In three steps. P1, P2, P3, and P4 can be changed by the algorithm of the modem.

On the other hand, the low noise amplified signal by the receivers 621 to 628 for each mode and band as described above is input to the first mixer 680 or the second mixer 690 which is a wideband mixer.

In this case, the controller 982 may use the first local frequency LO1 provided to the first mixer 680 and the second local frequency LO2 provided to the second mixer 690 to correspond to a reception mode and a band. Adjust with Accordingly, the first mixer 680 receives the signal input from the receiver of any one of the WCDMA2000 receiver 621, the WCDMA / PCS1900 combined receiver 622, and the WCDMA / GSM850 combined receiver 633 corresponding to the main band. Downconvert using frequency. In addition, the second mixer 690 uses a second local frequency as a signal input from any one of the DCS1800 receiver 624 and the GSM900 receiver 625 and the WCDMA diversity receivers 626 to 628 corresponding to the sub band. Down-convert.

The downlink signal of the main band converted by the first mixer 680 is input to the first baseband processor 984, and the first baseband processor 984 is controlled by the downconverted main band 982. Is output as a first baseband signal. In addition, the sub-band signal down-converted by the second mixer 690 is input to the second baseband processor 986, and the second baseband processor 986 is down-converted under the control of the controller 982. A subband signal is output as a second baseband signal.

12 is a diagram illustrating a baseband processing procedure of the first and second baseband processing units 984 and 986. 12 is a diagram for describing a baseband processing procedure of a multi-mode, multi-band mobile station according to a second embodiment of the present invention.

Referring to FIG. 12, the first baseband processor 984 includes an A / D converter 1, a digital AGC 2, a channel filter 3, a DC offset correction unit 4, and a D / A converter 5. It includes.

The A / D converter 1 receives a main band signal down-converted by the first mixer 680 and converts the signal into a digital signal. The digital AGC 2 adjusts the gain of the converted main band digital signal. The channel filter 3 may be a low pass filter (LPF) and the like, and receives the digital signal of the main band and filters the channel signal to pass only. The DC offset corrector 4 corrects the DC offset of the filtered channel signal. The D / A converter 5 converts the DC offset corrected channel signal into an analog signal and outputs it as a first baseband signal.

According to a second embodiment of the present invention, the main band signal may be a WCDMA2000, WCDMA1900, PCS1900, WCDMA850, or GSM850 band, and the controller 982 may control the first base according to the SPI signal from the modem controller 991. The band processing unit 984 is controlled. Accordingly, each of the A / D converter 1, the digital AGC 2, the channel filter 3, the DC offset correction unit 4, and the D / A converter 5 of the first baseband processor 984 is a control unit. Under the control of 982, the operation is performed while changing the characteristics according to the reception band characteristics.

For example, when the reception band is the GSM 850 band, the A / D converter 1, the digital AGC 2, the channel filter 3, the DC offset correction unit 4, and the D / A of the first baseband processor 984. Each of the converters 5 operates in accordance with the GSM850 band characteristics under the control of the controller 982. In addition, when the reception band is the WCDMA850 band, the A / D converter 1, the digital AGC 2, the channel filter 3, the DC offset correction unit 4, and the D / A converter of the first baseband processing unit 984 (5) Each operates in accordance with the WCDMA850 band characteristics under the control of the control unit 982.

Meanwhile, the second baseband processor 986 operates in a manner similar to that of the first baseband processor 984, so that signals of subbands, that is, DCS1800, GSM900, WCDMA (D) 2000, WCDMA (D) 1900, WCDMA (D) The 850 band signal is output as a second baseband signal.

Meanwhile, since the first baseband processor 984 processes the WCDMA2000, WCDMA1900, PCS1900, WCDMA850, and GSM850 bands, the first baseband signal output from the first baseband processor 984 may be a WCDMA signal or a GSM signal. .

In addition, since the second baseband processor 986 processes the DCS1800, GSM900, WCDMA (D) 2000, WCDMA (D) 1900, and WCDMA (D) 850 bands, the second baseband processor 986 outputs the second baseband processor 986. The base band signal may be a GSM signal or a WCDMA diversity signal.

Accordingly, the baseband processor 980 divides the first baseband signal and the second baseband signal into a WCDMA baseband signal, a GSM baseband signal, and a WCDMA diversity signal, respectively, and outputs them to the modem unit 990.

Referring back to FIG. 9, the modem unit 990 receives a baseband signal corresponding to WCDMA through an I1Q1 path and a baseband signal corresponding to GSM and WCDMA diversity through I2Q2.

Therefore, the baseband processor 980 outputs the I1Q1 path when the first baseband signal output from the first baseband processor 984 is a WCDMA signal, and outputs the GSM baseband signal multiplexer 988 when the GSM signal is a GSM signal. Through the I2Q2 path.

In addition, the baseband processor 980 outputs the first baseband signal (GSM, WCDMA diversity signal) output from the second baseband processor 986 to the I2Q2 path through the multiplexer 988.

The multiplexer 988 outputs the GSM baseband signal output from the first baseband processor 984 or the GSM or WCDMA diversity baseband signal output from the second baseband processor 986 to the I2Q2 path, respectively.

The WCDMA modem 992 of the modem unit 990 receives the WCDMA baseband signal through the I1Q1 path, and demodulates the WCDMA baseband signal.

In addition, the demultiplexer 993 of the modem unit 990 receives a GSM or WCDMA diversity baseband signal through I2Q2, outputs a GSM signal to the GSM modem 994 when the GSM baseband signal is received, and outputs a WCDMA diversity base. When the band signal is received, the WCDMA diversity baseband signal is output to the WCDMA diversity modem 995.

The GSM modem 994 receives and demodulates a GSM baseband signal. The WCDMA diversity modem 995 receives and demodulates the WCDMA baseband signal.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. For example, in the above-described embodiment of the present invention, the combined receiver for receiving the WCDMA1900 MHz signal and the PCS1900 MHz signal and the receiving receiver for the combined WCDMA850 MHz signal and the GSM850 MHz signal have been described. In other words, signals corresponding to different air interface standards and having the same frequency band are not limited to the specific signals described above. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

As described above, the present invention does not require high processing speed of digital intermediate frequency (DIF) receiver elements while reducing power consumption of SDR (Software-Defined Radio) processing elements in multi-mode and multi-band mobile stations. Lowers the sampling rate while maintaining digital signal processing at the IF level.

In addition, the multi-mode, multi-band mobile station of the present invention enables the design of a wideband image reject mixer at the RF analog front end of the receiver to enable low current consumption and to satisfy the multi-frequency band. In addition, the digital IF filter can be operated with lower configurability and lower sampling rates, resulting in lower current consumption.

In addition, the multi-band, multi-mobile station of the present invention can reduce the number of receivers by using a single receiver even if the service type is different for the same frequency band. In addition, the multi-band, multiple mobile station of the present invention can be used in the TDD scheme (eg GSM850 or PCS1900 scheme) duplexer used only in the conventional FDD scheme (eg WCDMA scheme).

In addition, the multi-mode, multi-band mobile station of the present invention can be implemented with a small mixer by using a mixer in which the mixers of the receivers of the main reception band and the receivers of the sub reception band are integrated into one.

Claims (42)

As a multi-mode, multi-band mobile station for wireless networks operating under various air interface standards, A plurality of low noise amplifiers, each adapted for a selected frequency band, NZIF (Near-Zero Intermediate Frequency) wideband image for receiving an amplified RF signal from one of the plurality of low-noise amplifiers and down converting the amplified RF signal to generate a first analog intermediate frequency (IF) signal A multimode, multiband mobile station comprising a jersey mixer. 2. The multi-mode, multi-band mobile station of claim 1, further comprising a switch for coupling the selected low noise amplifier to the NZIF wideband image resistant mixer. 3. The multimode, multiband mobile station of claim 2, wherein the switch selects the selected low noise amplifier in accordance with a first air interface specification in which the multimode, multiband mobile station operates. 4. The multi-mode, multi-band mobile station of claim 3, further comprising a programmable frequency variable oscillator capable of supplying an oscillator reference signal at a selectable frequency to the NZIF wideband image blocking mixer. 5. The multi-mode, multi-band mobile station of claim 4, further comprising a first reconfigurable bandpass filter to filter the first analog IF signal from the NZIF wideband image reject mixer. 6. The multimode, multiplexed mode of claim 5, wherein the first reconfigurable bandpass filter filters the first analog IF signal in accordance with the first wireless interface specification in which the multimode, multiband mobile station operates. Band mobile station. 7. The multimode, multiband mobile station of claim 6, wherein the first reconfigurable bandpass filter removes unwanted frequencies from the first analog IF signal. 8. The multimode, multiband mobile station of claim 7, further comprising a programmable variable gain amplifier capable of amplifying a first filtered analog IF signal from the first reconfigurable bandpass filter. 9. The multimode, multiband mobile station of claim 8, further comprising a second reconfigurable bandpass filter for filtering the analog IF signal amplified from the programmable variable gain amplifier. 10. The multi-mode, multi-band mobile station of claim 9, wherein the second reconfigurable bandpass filter is an anti-alias filter. 11. The multi-mode, multi-band mobile station of claim 10, further comprising an analog-to-digital converter capable of converting a second filtration IF signal from the second reconfigurable bandpass filter into a digital IF signal. 12. The multimode, multiband mobile station of claim 11, wherein the programmable variable gain amplifier amplifies the first filtered analog IF signal in accordance with an operating range of the analog to digital converter. 13. The multi-mode, multi-band mobile station of claim 12, further comprising a reconfigurable digital IF processing block. A method of operating a multi-mode, multi-band mobile station for a wireless network operating under various air interface standards, Selecting one of the plurality of low noise amplifiers to amplify the incoming radio frequency (RF) signal and adapting each of the plurality of low noise amplifiers to a selected frequency band; And a NZIF (Near-Zero Indermediate Frequency) wideband image blocking mixer downconverting the amplified RF signal from the selected low noise amplifier to produce a first analog intermediate frequency (IF) signal. Method of operation of a band mobile station. 15. The method of claim 14, further comprising coupling the selected low noise amplifier to the NZIF wideband image stop mixer using a switch. 16. The method of claim 15, wherein said switch selects said selected low noise amplifier in accordance with a first wireless interface specification in which said multi-mode, multi-band mobile station operates. 17. The method of claim 16, wherein the NZIF wideband image blocking mixer receives an oscillator reference signal at a selectable frequency from a programmable frequency variable oscillator. 18. The method of claim 17, further comprising filtering the first analog IF signal from the NZIF wideband image reject mixer in a first reconfigurable bandpass filter. 19. The method of claim 18, wherein the first reconfigurable bandpass filter filters the first analog IF signal in accordance with the first wireless interface specification in which the multimode, multiband mobile station operates. Method of operation of a multi-band mobile station. 20. The method of claim 19, wherein said first reconfigurable bandpass filter removes unwanted frequencies from said first analog IF signal. In a multi-mode, multi-band mobile station, A transmitter for transmitting the multi-mode and multiple bands through respective transmitters; Signals corresponding to the same frequency band among the multi-mode and multiple bands are received through the combined receivers that use the same frequency band to receive one or more radio signals by different services, and signals that do not correspond to the same frequency band, respectively. Mobile station characterized in that it comprises a receiving unit for receiving through the receiver for each frequency band. The method of claim 21, wherein the respective receivers, And a dual low noise amplifier (LNA) for amplifying received signals of different service methods of the same frequency band according to the service method. The method of claim 21, And a duplexer for separating transmission / reception signals of the frequency division duplex (FDD) and the time division duplex (TDD) methods among the multi-mode and multiple bands. The method of claim 21, And a duplexer for receiving and transmitting the GSM signal to the GSM receiver. The method of claim 21, And the duplexer further comprises a duplexer for receiving any one of a common band GSM signal or a WCDMA signal and transferring the received GSM signal or WCDMA signal to a WCDMA / GSM combined receiver. 22. The mobile station of claim 21, wherein the multimode, multiple bands comprise WCDMA2000 MHz, WCDMA1900 MHz, WCDMA850 MHz bands, and GSM850 MHz, GSMS900 MHz, DCS1800 MHz, and PCS1900 MHz bands. The method of claim 21, wherein the transmitting unit, A WCDMA2000 transmitter for transmitting signals in the WCDMA2000 MHz band, A WCDMA 1900 transmitter for transmitting signals in the WCDMA 1900 MHz band, A WCDMA850 transmitter that transmits signals in the WCDMA850 MHz band, DCS1800 / PCS1900 transmitter that transmits signals in the DCS1800 MHz and PCS1900 MHz bands, And one or more of the GSM850 / GSMS900 transmitters for transmitting signals in the GSM850 MHz and GSMS 900 MHz bands. The receiver of claim 21, wherein the receivers for each frequency band include: A WCDMA2000 receiver for receiving signals in the WCDMA2000 MHz band, A DCS1800 receiver that receives signals in the DCS1800 MHz band, And at least one of a GSMS900 receiver for receiving signals in the GSMS900 MHz band. The method of claim 21, wherein the respective receivers, A WCDMA / PCS1900 receiver that receives signals in the WCDMA1900 MHz band and signals in the PCS1900 MHz band, And a receiver of any one of a WCDMA / GSM850 receiver for receiving a signal in the WCDMA850 MHz band and a signal in the GSM850 MHz band. The method of claim 21, A first mixer for converting a signal of a high frequency band received by receivers receiving a main reception band, which is a high utilization band in a region among the multi-mode and multiple bands, into a signal of a low frequency band; Further, a second mixer for converting a signal of a high frequency band received by the receiver receiving a low reception sub-band in a certain region of the plurality of frequency bands for each of the plurality of communication services into a signal of a low frequency band And a mobile station. 31. The mobile station of claim 30, wherein the sub receive band comprises a diversity band. In a multi-mode, multi-band mobile station, A switch unit which performs a switching operation for selecting a mode and a band to be received among a multi-mode and a multi-band under predetermined control; Receivers for receiving a signal of its own mode and band among multi-mode and multi-band signals according to the switching operation; Mixers for down-converting the received signal using local frequencies corresponding to the mode and band to be received; A baseband processor configured to control an operation of a receiver corresponding to a mode and a band to be received among the receivers, to baseband process the down-converted received signal, and to output a baseband signal by mode; Outputs a control signal for receiving a signal of a mode and band to be received, adjusts the local frequency to a local frequency corresponding to the mode and band to be received, and modulates the mode-based baseband signal for each mode A mobile station comprising a modem unit for demodulating through. 33. The method of claim 32, And wherein said multi-mode, multi-band includes respective bands of WCDMA mode and respective bands of GSM mode. The method of claim 33, wherein the receivers, WCDMA receivers for receiving respective bands of the WCDMA mode, GSM receivers for receiving respective bands of the GSM mode, And WCDMA / GSM combined receivers for receiving the WCDMA and GSM mode common bands. The method of claim 33, wherein the switch unit, A first antenna switch for performing switching for selecting a reception mode and a frequency band of each band of the WCDMA mode and each of the bands of the GSM mode under predetermined control; A band select switch for selecting a frequency band of a GSM mode when the reception mode is selected as a GSM mode; And a second antenna switch for selecting whether to receive WCDMA diversity when the reception mode is the WCDMA mode. The method of claim 33, wherein the mixers, A first mixer for down-converting signals received by the receivers receiving the WCDMA mode common bands among the multimode and multiple bands and the WCDMA and GSM mode common bands; And a second mixer for down-converting a signal received by receivers receiving the WCDMA diversity bands and respective bands of the GSM mode of the multimode and multibands. The method of claim 36, wherein the baseband processing unit, A first baseband processor for baseband processing the signals of each band in the WCDMA mode down-converted from the first mixer and the signals of each band in the WCDMA and GSM modes under predetermined control; A second baseband processor configured to baseband process each band of the GSM mode down-converted from the second mixer and the WCDMA diversity band signal under a predetermined control; And a control unit controlling a processing operation of the first and second baseband processing units according to a reception mode and a band characteristic. The method of claim 37, A first path for transmitting a WCDMA signal among the baseband signals output from the first and second baseband processors to a modem; And a second path for transmitting an M signal and a WCDMA diversity signal among the base band signals output from the first and second baseband processors to a modem unit. The method of claim 37, wherein the modem unit, A WCDMA modem for demodulating the WCDMA baseband signal output from the baseband processor; A GSM modem for demodulating the GSM baseband signal output from the baseband processor; A WCDMA diversity modem for demodulating the WCDMA diversity baseband signal output from the baseband processor; And a modem controller for outputting a control signal for receiving a signal of a desired mode and band among the multi-mode and multi-band signals, and adjusting the local frequency to a local frequency corresponding to a mode and a band to be received. Mobile station. The method of claim 39, The control signal for receiving a signal of the desired mode and band of the multi-mode, multi-band signal, A switch control signal for controlling the switch unit; And an SPI signal for controlling the baseband processor. The method of claim 40, The baseband processor controls an operation of a receiver corresponding to a mode and a band to be received among the receivers according to the SPI signal, and WCDMA when the receiver corresponding to the mode and the band to be received is a WCDMA / GSM combined band. And a low noise amplification gain corresponding to a mode and a band to receive a low noise amplification gain of a GSM / GSM receiver, and control processing operations of the first and second baseband processing units. 40. The method of claim 39, wherein the switch control signal for controlling the switch unit, A first switch control signal for selecting a reception mode and a frequency band to be received among the respective bands of the WCDMA mode and the GSM mode; A second switch control signal for selecting a frequency band of a GSM mode when the reception mode is selected as a GSM mode; And a third switch control signal for selecting whether to receive the WCDMA diversity.

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