KR20090111599A - Mobile terminal and frequency interference control method therefor - Google Patents

Abstract

PURPOSE: A mobile terminal and a frequency interference control method for the same capable of stably using a communication module are provided to stably use the communication module without frequency interference and performance attenuation. CONSTITUTION: A mobile terminal and a frequency interference control method for the same capable of stably using a communication module are as follows. Frequency hopping information is received from the first communication module(S10). The second communication modules recognize the frequency hopping information at a time when the interference of the second communication inter-module is generated as the basis(S13). The base station is not allocated in an uplink or downlink slot(S14).

Description

MOBILE TERMINAL AND FREQUENCY INTERFERENCE CONTROL METHOD THEREFOR}

The present invention relates to a mobile terminal and a frequency control method thereof.

The mobile terminal may be configured to perform various functions. Examples of such various functions include data and voice communication functions, taking pictures or videos through a camera, storing voices, playing music files through a speaker system, and displaying images or videos. Some mobile terminals include additional functionality to play games, while others are implemented as multimedia devices. Moreover, recent mobile terminals can receive broadcast or multicast signals to watch video or television programs.

In addition, efforts to support and increase the function of the mobile terminal continue. The foregoing efforts include additions and improvements in software or hardware as well as changes and improvements in the structural components forming the mobile terminal.

The mobile terminal may support at least one communication mode. Each supported communication mode is performed through a dedicated chip provided in the mobile terminal. For example, a mobile terminal is a Bluetooth (BT) that enables two-way communication in real time by wirelessly connecting a computer, a mobile terminal, or an electronic device in a short distance, and a larger area (about 50 km) than the BT. It can provide WiMAX mode to enable high-speed wireless access over the network.

The WiMAX uses a 2.5 GHz frequency band (up to 2.6 GHz), and the BT uses a 2.4 GHz to 2.48 GHz frequency band. The frequency of the WiMAX is a fixed frequency determined by a service provider, and the frequency of the BT is a frequency randomly selected in units of 1 MHz. In this case, randomly selecting a use frequency of BT is called frequency hopping.

Since the BT randomly selects and uses a frequency, when the selected frequency approaches the WiMAX frequency (2.5 GHz), the output signal of the WIMAX module is inputted to the BT module or the output signal of the BT module is inputted to WiMAX. It will cause frequency interference.

Therefore, when the frequencies of the WiMAX and BT interfere with each other, both WiMAX and BT do not operate properly, and the receiving side does not receive a signal properly.

The present invention provides a mobile terminal and a method for controlling the frequency thereof, which can secure the safety of the mobile terminal by minimizing the frequency interference between communication modes adjacent to the frequency band.

In the mobile terminal according to an embodiment of the present invention for realizing the above problem, the BT module informs the WiMAX module of frequency hopping information, and the WiMAX module recognizes a time at which interference occurs according to the frequency hopping information. The time information is notified to the WiMAX base station so as not to allocate UL (Uplink) or DL (Downlink) at the corresponding time.

In addition, since the WiMAX base station includes control information required for each terminal after the preamble, if interference occurs even when the WiMAX module does not allocate UL or DL at the designated time, the WiMAX base station determines the interference condition to determine the RX and the BT module. / Or stop the TX of the WiMAX module.

The present invention controls slot allocation for a corresponding communication module when two communication modules having adjacent frequency bands are used at the same time in the mobile terminal to cause interference, and furthermore, by controlling the reception operation and / or transmission operation of the communication module. There is an effect that the communication module can be used stably without frequency interference and performance attenuation.

Hereinafter, a mobile terminal according to the present invention will be described in more detail with reference to the accompanying drawings.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

The mobile terminal can be implemented in various forms. For example, the mobile terminal described herein includes a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP) and navigation, and the like. have.

The illustrated mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130 (or an operation unit), a sensing unit 140, an output unit 150, and a memory. 160, an interface unit 170, a controller 180, and a power supply unit 190 may be included. 1 illustrates a mobile terminal having various components. However, not all illustrated components are essential components. The mobile terminal may be implemented by more components than the illustrated components, or the mobile terminal may be implemented by fewer components.

Hereinafter, the components will be described in turn.

The wireless communication unit 110 may include one or more components for wireless communication between the mobile terminal 100 and the wireless communication system or wireless communication between the mobile terminal 100 and a network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short range communication module 114, a location information module 115, and the like. .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.

Meanwhile, the broadcast related information may be provided through a mobile communication network, and in this case, may be received by the mobile communication module 112.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 receives broadcast signals using various broadcasting systems, and in particular, digital multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), and media forward link (MediaFLO). Digital broadcast signals can be received using digital broadcasting systems such as only), digital video broadcast-handheld (DVB-H), integrated services digital broadcast-terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 is configured to be suitable for all broadcast systems providing broadcast signals as well as the digital broadcast system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

In addition, the mobile communication module 112 transmits and receives a radio signal with at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call call signal, or a text / multimedia message.

The wireless internet module 113 refers to a module for wireless internet access, and the wireless internet module 113 may be internal or external.

The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), and ZigBee may be used.

In addition, the location information module 115 is a module for checking or obtaining the location of the mobile terminal. One example is the Global Position System (GPS) module. The GPS module receives location information from a plurality of satellites. Here, the location information may include coordinate information represented by latitude and longitude. For example, the GPS module can measure the exact time and distance from three or more satellites and accurately calculate the current position by triangulating three different distances. A method of obtaining distance and time information from three satellites and correcting the error with one satellite may be used. In particular, the GPS module can obtain not only the location of latitude, longitude, and altitude but also accurate time together with the three-dimensional speed information from the location information received from the satellite.

Meanwhile, the A / V input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame may be displayed on the display unit 151.

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. Two or more cameras 121 may be provided according to the configuration aspect of the terminal.

The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into electrical voice data. The processed voice data may be converted into a form transmittable to the mobile communication base station through the mobile communication module 112 and output in the call mode. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 generates input data for the user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like. In particular, when the touch pad has a mutual layer structure with the display unit 151 described later, this may be referred to as a touch screen.

The sensing unit 140 may determine the current state of the mobile terminal 100 such as the open / closed state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of a user contact, the orientation of the mobile terminal, the acceleration / deceleration of the mobile terminal, and the like. The sensing unit generates a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, it is responsible for sensing functions related to whether the power supply unit 190 is supplied with power or whether the interface unit 170 is coupled to an external device.

The interface unit 170 serves as an interface with all external devices connected to the mobile terminal 100. For example, wired / wireless headset ports, external charger ports, wired / wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input / output (I / O) ports, Video I / O (Input / Output) port, earphone port, etc. may be included.

Here, the identification module is a chip that stores various types of information for authenticating the use authority of the mobile terminal 100, and includes a user identification module (UIM) and a subscriber identify module (SIM). ), A Universal Subscriber Identity Module (“USIM”), and the like. In addition, the device equipped with the identification module (hereinafter, 'identification device') may be manufactured in the form of a smart card. Therefore, the identification device may be connected to the terminal 100 through a port. The interface unit 170 receives data from an external device or receives power and transmits the data to each component inside the mobile terminal 100 or transmits the data inside the mobile terminal 100 to an external device.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal, and includes a display unit 151, a sound output module 152, an alarm unit 153, and the like.

The display unit 151 displays information processed by the mobile terminal 100. For example, when the mobile terminal is in a call mode, a user interface (UI) or a graphic user interface (GUI) related to a call is displayed. When the mobile terminal 100 is in a video call mode or a photographing mode, the mobile terminal 100 displays a photographed and / or received image, a UI, or a GUI.

Meanwhile, as described above, when the display unit 13 and the touch pad form a mutual layer structure to form a touch screen, the display unit 151 may be used as an input device in addition to the output device. The display unit 151 may include a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a three-dimensional display. 3D display). In addition, two or more display units 151 may exist according to the implementation form of the mobile terminal 100. For example, an external display unit (not shown) and an internal display unit (not shown) may be simultaneously provided in the mobile terminal 100.

The sound output module 152 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. In addition, the sound output module 152 outputs a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed in the mobile terminal 100. The sound output module 152 may include a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the mobile terminal 100. Examples of events occurring in the mobile terminal include call signal reception, message reception, and key signal input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than an audio signal or a video signal. For example, the signal may be output in the form of vibration. When a call signal is received or a message is received, the alarm unit 153 may output a vibration to inform this. Alternatively, when a key signal is input, the alarm unit 153 may output a vibration in response to the key signal input. Through the vibration output as described above, the user can recognize the occurrence of the event. Of course, the signal for event occurrence notification may be output through the display unit 151 or the voice output module 152.

The memory 160 may store a program for processing and controlling the controller 180, and may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). You can also perform a function.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (eg, SD or XD memory, etc.), Random Access Memory (RAM) Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM) magnetic memory, Magnetic disk It may include at least one type of storage medium of the optical disk. In addition, the mobile terminal 100 may operate a web storage that performs a storage function of the memory 150 on the Internet.

The controller 180 typically controls the overall operation of the mobile terminal. For example, perform related control and processing for voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia module 181 for playing multimedia. The multimedia module 181 may be implemented in the controller 180 or may be implemented separately from the controller 180.

The power supply unit 190 receives external power and internal power under the control of the controller 180 to supply power for the operation of each component.

The various embodiments described herein may be implemented in a computer readable recording medium using, for example, software, hardware or a combination thereof.

According to a hardware implementation, embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing the functions. It may be implemented by the controller 180.

In a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that allow at least one function or operation to be performed. The software code may be implemented by a software application written in a suitable programming language. In addition, the software code may be stored in the memory 160 and executed by the controller 180.

 In the above, the mobile terminal related to the present invention has been described in terms of components according to functions. Hereinafter, referring to FIGS. 2 and 3, the mobile terminal related to the present invention will be further described in terms of components according to appearance. Hereinafter, for simplicity, a slider type mobile terminal is described as an example among various types of mobile terminals such as a folder type, a bar type, a swing type, a slider type, and the like. Therefore, the present invention is not limited to the slider type mobile terminal, but can be applied to all types of mobile terminals including the above-described type.

2 is a front perspective view of an example of a mobile terminal according to the present invention;

The mobile terminal of the present invention includes a first body 200 and a second body 205 configured to be slidable in at least one direction on the first body 200. In the case of the folder phone, the mobile terminal of the present invention includes a first body and a second body configured to be folded or unfolded at least one side of the first body.

A state in which the first body 200 is disposed to overlap the second body 205 may be referred to as a closed configuration, and as shown in the drawing, the first body 200 may be referred to as a second body ( An exposed state of at least a portion of 205 may be referred to as an open configuration. The mobile terminal mainly operates in a standby mode in a closed state, but the standby mode may be released by a user's operation. In addition, although the mobile terminal operates mainly in a call mode or the like in an open state, the mobile terminal may be switched to a standby mode by a user's manipulation or a lapse of a predetermined time.

The case (casing, housing, cover, etc.) forming the exterior of the first body 200 is formed by the first front case 220 and the first rear case 225. Various electronic components are embedded in the space formed by the first front case 220 and the first rear case 225. At least one intermediate case may be further disposed between the first front case 220 and the first rear case 225.

The cases may be formed by injecting a synthetic resin or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the audio output module 152, the camera 121, or the first user input unit 210 may be disposed on the first body 200, specifically, the first front case 220.

The display unit 151 includes a liquid crystal display (LCD), organic light emitting diodes (OLED), and the like, which visually express information.

In addition, since the touch pad is superimposed on the display unit 151 in a layer structure, the display unit 151 may operate as a touch screen to enable input of information by a user's touch.

The sound output module 152 may be implemented in the form of a speaker.

The camera 121 may be implemented to be suitable for capturing an image or a video of a user.

Like the first body 200, the case forming the exterior of the second body 205 is formed by the second front case 230 and the second rear case 235.

The second user input unit 215 may be disposed on the second body 205, specifically, on the front face of the second front case 230. A third user input unit 245, a microphone 122, and an interface unit 170 may be disposed on at least one of the second front case 230 or the second rear case 235.

The first to third user inputs 210, 215, and 245 may be collectively referred to as a manipulating portion 130, and may be any method if the user is tactile in a tactile manner. Either may be employed.

For example, the user input unit may be implemented as a dome switch or a touch pad that may receive a command or information by a user's push or touch operation, or may be operated by a wheel or jog or a joystick that rotates a key. Can also be implemented.

In the functional aspect, the first user input unit 210 is for inputting a command such as start, end, scroll, etc., and the second user input unit 215 is for inputting numbers, letters, symbols, and the like.

In addition, the third user input unit 245 may operate as a hot-key for activating a special function in the mobile terminal.

The microphone 122 may be implemented in a form suitable for receiving a user's voice, other sounds, and the like.

The interface unit 170 serves as a passage for allowing the mobile terminal according to the present invention to exchange data with an external device. For example, the interface unit 170 is wired or wirelessly, a connection terminal for connecting with an earphone, a port for short-range communication (for example, an infrared port (IrDA port), a Bluetooth port, a wireless LAN port) wireless LAN port), or at least one of power supply terminals for supplying power to the mobile terminal.

The interface unit 170 may be a card socket that accommodates an external card such as a subscriber identification module (SIM) or a user identity module (UIM) and a memory card for storing information.

The power supply unit 190 for supplying power to the mobile terminal is mounted on the second rear case 235 side.

The power supply unit 190 may be detachably coupled for charging, for example, as a rechargeable battery.

3 is a rear perspective view of the mobile terminal of FIG. 2.

Referring to FIG. 3, a camera 121 may be additionally mounted on the rear surface of the second rear case 235 of the second body 205. The camera 121 of the second body 205 has a photographing direction substantially opposite to that of the camera 121 of the first body 200, and different pixels from the camera 121 of the first body 200. Can have

For example, the camera 121 of the first body 200 has a low pixel so that the user's face is photographed and transmitted to the counterpart in case of a video call or the like, and the camera 121 of the second body 200 is generally used. It is preferable to have a high pixel because the subject is often photographed and not immediately transmitted.

The flash 250 and the mirror 255 may be further disposed adjacent to the camera 121 of the second body 205. The flash 250 illuminates the subject when the subject is photographed by the camera 121 of the second body 205. The mirror 255 allows the user to see the user's face or the like when photographing (self-photographing) the user by using the camera 121 of the second body 205.

The sound output module 152 may be further disposed on the second rear case 235.

The sound output module 152 of the second body 205 may implement a stereo function together with the sound output module 152 of the first body 200, and may be used for a call in a speakerphone mode.

In addition, an antenna 260 for receiving a broadcast signal may be disposed on one side of the second rear case 235. The antenna 260 may be installed to be pulled out of the second body 205.

A portion of the slide module 265 that slidably couples the first body 200 and the second body 205 is disposed on the first rear case 225 side of the first body 200.

The other part of the slide module 265 may be disposed on the second front case 230 side of the second body 205 and may not be exposed to the outside as shown in the drawing.

In the above description, the second camera 121 and the like have been described as being disposed in the second body 205, but the present invention is not limited thereto.

For example, at least one or more of the components 260, 121 to 250, and 152 described as disposed on the second rear case 235, such as the camera 121 of the second body, may be the first body 200, mainly. May be mounted on the first rear case 225. If so, there is an advantage that the configuration (s) disposed in the first rear case 225 in the closed state are protected by the second body 205. Furthermore, even if the camera 121 of the second body is not provided separately, the camera 121 of the first body may be rotatably formed so that the camera 121 of the second body may be photographed up to the photographing direction of the camera 121 of the second body. .

The terminal 100 illustrated in FIGS. 1 to 3 may be operated in a communication system capable of transmitting data through a frame or packet, including a wired / wireless communication system and a satellite-based communication system. It can be configured to.

Hereinafter, referring to FIG. 4, a communication system capable of operating a terminal according to the present invention will be described.

The communication system may use different air interfaces and / or physical layers. For example, a radio interface usable by a communication system may include frequency division multiple access (FDMA), time division multiple access (TDMA), and code division multiple access (Code Division). Multiple Access (CDMA), Universal Mobile Telecommunications Systems (UMTS) (especially Long Term Evolution (LTE)), Global System for Mobile Communications (GSM), etc. May be included. Hereinafter, for convenience of description, the description will be limited to CDMA. However, it is a matter of course that the present invention is applicable to all communication systems including the CDMA wireless communication system.

As shown in FIG. 4, the CDMA wireless communication system includes a plurality of terminals 100, a plurality of base stations (BS) 270, and base station controllers (BSCs) 275. ), And a mobile switching center (MSC) 280. The MSC 280 is configured to be connected to a public switched telephone network (PSTN) 290 and is also configured to be connected to BSCs 275. The BSCs 275 may be coupled to the BS 270 through a backhaul line. The backhaul line may be provided according to at least one of E1 / T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. Thus, a plurality of BSCs 275 may be included in the system shown in FIG.

Each BS 270 may include at least one sector, and each sector may include an omnidirectional antenna or an antenna pointing radially out of BS 270. In addition, each sector may include two or more antennas of various types. Each BS 270 may be configured to support a plurality of frequency assignments, each of which has a specific spectrum (eg, 1.25 MHz, 5 MHz, etc.).

The intersection of sectors and frequency assignments may be called a CDMA channel. BS 270 may be referred to as a Base Station Transceiver Subsystem ('BTSs'). In this case, the word "base station" may be called the sum of one BSC 275 and at least one BS 270. The base station may also indicate “cell site”. Alternatively, each of the plurality of sectors for a particular BS 270 may be called a plurality of cell sites.

As shown in FIG. 4, a broadcasting transmitter (BT) 295 transmits a broadcast signal to terminals 100 operating in the system. The broadcast module 111 shown in FIG. 1 is provided in the terminal 100 to receive a broadcast signal transmitted by the BT 295.

In addition, FIG. 4 illustrates multiple satellite positioning systems (GPS) satellites 300. The satellites 300 help to locate the at least one terminal of the plurality of terminals 100. Although two satellites are shown in FIG. 4, useful location information may be obtained by two or less or more satellites. The GPS module 115 shown in FIG. 1 cooperates with the satellites 300 to obtain desired location information. Here, the location can be tracked using all the techniques that can track the location, not just the GPS tracking technology. In addition, at least one of the GPS satellites 300 may optionally or additionally be responsible for satellite DMB transmission.

During typical operation of a wireless communication system, BS 270 receives a reverse link signal from various terminals 100. At this time, the terminals 100 are connecting a call, transmitting or receiving a message, or performing another communication operation. Each of the reverse link signals received by a particular base station 270 is processed within by the particular base station 270. The data generated as a result of the processing is transmitted to the connected BSC 275. BSC 275 provides call resource allocation and mobility management functionality, including the organization of soft handoffs between base stations 270. In addition, the BSC 275 transmits the received data to the MSC 280, and the MSC 280 provides an additional transmission service for connection with the PSTN 290. Similarly, PSTN 290 connects with MSC 280, MSC 280 connects with BSCs 275, and BSCs 275 send BSs 270 to transmit a forward link signal to terminals 100. ).

5 is a schematic block diagram of a mobile terminal according to an embodiment of the present invention.

As shown in FIG. 5, the mobile terminal according to the present invention includes a wireless communication unit 110, a user input unit 130, an output unit 150, a memory 160, and a controller 180.

The wireless communication unit 110 performs wireless communication with an external system or network through an antenna, and receives a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short range communication module 114, and a location. Information module 115 and the like.

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel, and the mobile communication module 112 includes at least one of a base station, an external terminal, and a server on a mobile communication network. Send and receive wireless signals. The wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call call signal, or a text / multimedia message.

The wireless internet module 113 is a module for wireless internet access such as WiMAX, WiBRO, etc. The wireless internet module 113 may be internal or external. In the present invention, a WiMAX module is described as the wireless Internet module.

The wireless internet module 113 receives frequency hopping information (frequency hopping sequence and phase) from the short range communication module 114, checks whether or not frequency interference occurs at a given time, and controls the time when interference occurs in the system (eg, WiMAX). BS).

Preferably, the frequency hopping sequence and phase may be determined from a master address and a master clock of the short range communication module 114.

The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), and ZigBee may be used. In the present invention, the BT module is used as the communication module as an example.

The user input unit 130 generates input data for the user to control the operation of the terminal.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal, and includes a display unit 151, a sound output module 152, an alarm unit 153, and the like.

The memory 160 may store a program for processing and controlling the controller 180, and may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). You can also perform a function. In addition, the memory 160 may store frequency hopping information of the BT module.

The controller 180 typically controls the overall operation of the mobile terminal. For example, perform related control and processing for voice calls, data communications, video calls, and the like. In addition, the controller 180 monitors the states of the wireless Internet module 113 and the short-range communication module 114 and transmits a time at which frequency interference between WiMAX and BT occurs to the base station, thereby causing the base station to perform UL or Do not assign DL slots (or links or channels). In addition, the controller 180 suspends the TX operation of the Rx and / or the wireless Internet module 113 of the short range communication module 114 when the interference still occurs despite not assigning the UL or DL slot. .

6 shows an example of a wireless Internet module 113 and a short-range communication module 114 composed of a WiMAX module and a BT module. 6 illustrates an example in which the WiMAX module 113-1 receives frequency hopping information of the BT module 114-1 to check whether there is frequency interference.

A method for simultaneously using BT-WiMAX in a mobile terminal configured as described above will be described with reference to the accompanying drawings.

The invention WiMAX (or BT) of the received signal strength: It is assumed a greater than (RSSI Received Signal strength Indication) a predetermined threshold value (RSS _threshold).

6 and 7, the BT module 114-1 performs frequency hopping for randomly selecting a use frequency in units of 1 MHz in a frequency band of 2.4 GHz to 2.48 GHz, and corresponding frequency hopping information (frequency). Hopping sequence and time) is transmitted to the WiMAX module 113-1 (S10).

The WiMAX module 113-1 determines whether the WiMAX Tx interferes with the BT Rx at a predetermined time T _f according to the received frequency hopping information (S11). At this time, the determination equation (1) is as follows.

RSSI _BT -SNR _required -Im_Loss> Noise _thermal + Noise _{tx ------} Equation (1)

RSSI _BT : Signal reception strength of BT

SNR _{required :} SNR _required to demodulate the signal

Im_Loss: loss margin of the device

Noise _{thermal :} thermal noise

_- Noise _tx: in the frequency band of the BT Noise Caused by WiMAX Tx Signals

The Im_Loss and Noise _thermal do not change after the mobile terminal is manufactured, and the Noise _tx is affected by the frequency offset between WiMAX and BT and the transmit power of WiMAX.

If the WiMAX Tx does not interfere with the BT Rx at the predetermined time T _f , the WiMAX module 113-1 increases the time and returns to the step S10 (S12). _{If the} WiMAX Tx interferes with the BT Rx in _f ), the WiMAX module 113-1 notifies the base station WiMAX BS of the corresponding time T _f through the antenna (S13).

The time (T _f) to notify the base station receiving time (T _f) in the WiMAX module 113-1 and the BT module 114-1 for the downlink (DL) slot (or link or channel) or uplink (UL ) Does not allocate a slot (S14).

That is, the BT module 114-1 informs the WiMAX module 113-1 of its frequency hopping information, and the WiMAX module 113-1 recognizes the time at which interference occurs according to the frequency hopping information, and then the time. By notifying the WiMAX BS of the information, the WiMAX BS does not allocate UL or DL links at that time.

However, in general, the base station transmits necessary control information to each terminal after transmitting the preamble, and allocates a DL slot or a UL slot necessary for transmitting the control information. Therefore, even if the base station does not allocate the UL or DL slot at the time when the interference between the WiMAX module 113-1 and the BT module 114-1 occurs, interference by the DL slot or the UL slot allocated for the control information This will occur.

Accordingly, the WiMAX module 113-1 checks whether interference still occurs after the process S14 (S15), and if interference still occurs, controls the reception operation of the BT module and / or the transmission operation of the WiMAX module (S15). S16).

For example, when the Tx of the BT module 114-1 interferes with the Rx of the WiMAX module 113-1, the WiMAX module 113-1 activates a predetermined signal (PA_SD signal) to activate the BT module 114-. The Tx operation in 1) is temporarily stopped. When the signal PA_SD is activated, the BT module 114-1 does not transmit or receive the signal.

As another example, if the Rx of the BT module 114-1 is interfered by the Tx of the WiMAX module 113-1, the WiMAX module 113-1 does not perform the Tx operation.

Finally, if the TMAX and Tx of the BT module 114-1 interfere with each other, the WiMAX module 113-1 suspends the Tx operation of the BT module 114-1.

8 shows another example of the wireless Internet module 113 and the short-range communication module 114 including the WiMAX module and the BT module. In particular, FIG. 8 illustrates an example in which the controller 180 checks whether the WiMAX module 113-1 interferes with the use frequency and the BT module 114-1.

That is, when WiMAX and BT are used at the same time, the controller 180 receives the necessary parameters (hopping information, RSSI, noise value) from the WiMAX module 113-1 and the BT module 114-1. ) To determine the interference between the two modules. The received parameter may be stored in the memory 150.

As a result of the determination, when the WiMAX Tx interferes with the BT Rx at a predetermined time T _f , the control unit 180 notifies the base station WiMAX BS of the corresponding time T _f , as shown in FIG. 7. Do not allocate downlink (DL) slots (or links or channels) or uplink (UL) slots at time T _f

In addition, if interference still occurs even when the UL or DL slot is not allocated, the controller 180 controls the reception operation of the BT module and / or the transmission operation of the WiMAX module by using the same method as in FIG. 7.

That is, when the Tx of the BT module 114-1 interferes with the Rx of the WiMAX module 113-1, the controller 180 activates a predetermined signal (PA_SD signal) to activate the Tx of the BT module 114-1. Pause the operation temporarily. When the Rx of the BT module 114-1 is interfered by the Tx of the WiMAX module 113-1, the controller 180 temporarily stops the Tx operation of the WiMAX module 113-1.

In addition, when the Tx of the WiMAX module 113-1 and the Tx of the BT module 114-1 interfere with each other, the Tx operation of the BT module 114-1 is temporarily stopped.

For convenience of description, the present invention has been described using the WiMAX module of the wireless Internet module and the BT module of the short range communication module as an example, but the present invention is not limited thereto.

In addition, according to an embodiment of the present invention, the above-described method for controlling frequency interference can be embodied as computer readable codes on a medium in which a program is recorded. The computer-readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (eg, transmission over the Internet). It also includes. In addition, the computer may include the controller 180 of the terminal.

The mobile terminal according to the present invention as described above is not limited to the configuration and method of the embodiments described above, the embodiments of the present invention may be selectively all or part of each embodiment so that various modifications can be made It may be configured in combination.

1 is a block diagram of a mobile terminal according to one embodiment of the present invention;

2 is a front perspective view of a mobile terminal according to an embodiment of the present invention;

3 is a rear perspective view of a mobile terminal according to one embodiment of the present invention;

4 is a block diagram of a wireless communication system in which a mobile terminal according to an embodiment of the present invention may operate.

5 is a schematic block diagram of a mobile terminal according to an embodiment of the present invention;

6 illustrates an example of a wireless Internet module and a short-range communication module including a WiMAX module and a BT module, in which a WiMAX module determines interference between two modules.

7 is a flowchart illustrating a method for controlling frequency interference of a mobile terminal according to an embodiment of the present invention.

8 is a diagram illustrating an example in which a control unit determines interference between two modules, as an example of a wireless Internet module and a short range communication module including a WiMAX module and a BT module.

******* Description of the symbols for the main parts of the drawing ********

110: wireless communication unit 111: broadcast receiving module

112: mobile communication module 113; Wireless Internet Module

130; User Input 150: Output

160: memory 180: control unit

Claims (11)

A first communication module; A second communication module that recognizes a time at which interference occurs according to the frequency hopping information of the first communication module, and notifies the base station of the recognized time so that the base station does not allocate an uplink or downlink slot at that time; Mobile terminal comprising a. The method of claim 1, wherein the first communication module A short range communication module for Bluetooth (BT) connection, and the second communication module is a mobile Internet module for WiMAX connection. The method of claim 1, wherein the frequency hopping information A mobile terminal comprising a frequency hopping sequence and time. The method of claim 1, wherein the second communication module And if the base station does not allocate an uplink or downlink slot at a corresponding time, if interference occurs, the mobile terminal temporarily suspends transmission or reception of the first and second communication modules according to the interference state. The method of claim 4, wherein the second communication module If the transmission of the first communication module interferes with the reception of the second communication module, the transmission operation of the first communication module is temporarily stopped, and the reception of the first communication module may be interrupted by the transmission of the second communication module. And if so, temporarily suspends the transmission operation of the second communication module. The method of claim 4, wherein the second communication module The mobile terminal, characterized in that to pause the transmission operation of the first communication module when the transmission of the first and second communication module interfere with each other. Receiving frequency hopping information from the first communication module; Recognizing, by the second communication module, a time at which interference between the first and second communication modules occurs based on the frequency hopping information; And notifying the base station of the time at which the interference has occurred, so that the base station does not allocate an uplink or downlink slot at the corresponding time. The method of claim 7, wherein the frequency hopping information A method of controlling frequency interference in a mobile terminal, comprising a frequency hopping sequence and time. The method of claim 7, further comprising: suspending transmission or reception of the first and second communication modules according to the interference state if interference occurs even when the uplink or downlink slot is not allocated. A frequency interference control method of a mobile terminal, characterized in that. 10. The method of claim 9, wherein if the transmission of the first communication module interferes with the reception of the second communication module, the transmission operation of the first communication module is temporarily stopped and the reception of the first communication module stops. If interference is caused by the transmission of the frequency interference control method of the mobile terminal, characterized in that for suspending the transmission operation of the second communication module. 10. The method of claim 9, wherein if the transmission of the first and second communication modules interfere with each other, the transmission operation of the first communication module is paused.

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