KR101467792B1 - A mobile telecommunication device and a method of controlling sleep mode - Google Patents

Abstract

The mobile communication terminal determines whether to switch to the sleep mode according to the state of the identification module before switching to the sleep mode, and its sleep mode control method.

The mobile communication terminal moves out of the sleep mode without switching to the sleep mode while the identification module is activated, and its sleep mode control method.

Description

[0001] The present invention relates to a mobile communication terminal and a sleep mode control method using the same,

The present invention relates to a mobile communication terminal and a method for controlling a sleep mode of the mobile communication terminal.

Generally, a terminal refers to a device having at least one of a voice / video call function, an information input / output function, and a data storage function. Here, the terminal can be divided into a mobile type and a fixed type according to mobility, and the mobile type terminal can be divided into a portable type and a stationary type depending on whether the user is portable or not.

In recent years, in addition to the above-mentioned functions, the terminal has been able to perform various functions such as image shooting of a still image or a moving image, playback of a multimedia file such as a music file or a moving image file, game, broadcast reception / And is implemented in the form of a comprehensive multimedia device (multimedia player).

In order to implement complex functions in multimedia devices, various new attempts have been made in terms of hardware or software. For example, a user interface (UI) environment implemented in various forms is provided to allow a user to easily and conveniently search for or select a function.

1 is a flowchart illustrating a process of connecting to a network using a GPRS terminal.

When power is applied to an access terminal (AT), the terminal transmits an access request signal to an access point (AP). The base station performs a procedure of requesting authentication and encryption to confirm whether or not the corresponding terminal is authenticated.

The terminal receives a Authentication and Ciphering Request message sent from the base station and requests a specific key value to the identification module in the terminal to perform the authentication and encryption.

The terminal transmits the authentication and encryption value to the base station using the key value received from the identification module, and receives the connection permission signal from the base station to complete the connection process.

At this time, if there is no response from the identification module, the terminal issues a specific command (reset) to request a re-operation or enters a lock-up state, and the terminal can not operate normally.

2 is an exemplary view showing a case where an interrupt of the identification module is lost

(a) is an example of an interrupt generation of the identification module.

(b) shows an example of entering the sleep mode after occurrence of the frame interrupt. In the sleep mode section, an interruption of the identification module as in (a) may occur in an interval in which an external interrupt is disabled so as not to occur.

In this case, as in (c), the interruption of the identification module may be lost.

The present invention provides a mobile communication terminal and a sleep mode control method that can prevent an interruption of an identification module from being lost due to entering a sleep mode.

It is another object of the present invention to provide a mobile communication terminal in which an interruption of an identification module can normally be performed in a terminal in a sleep mode, and a sleep mode control method thereof.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, a mobile communication terminal according to the present invention checks a current state of an identification module before entering a sleep mode.

The mobile communication terminal according to the present invention is characterized by comprising: a mobile communication module for transmitting and receiving a radio signal to and from a base station on a mobile communication network; An identification module storing various information for authenticating a use right of the device; And a control unit for confirming an operation state of the identification module and outputting a control signal for entering a sleep mode when a sleep mode response signal (Sleep_Res) is received from an access point (AP) through the mobile communication module .

Another aspect of the mobile communication terminal according to the present invention is that the mobile communication module transmits and receives a radio signal of a time division multiple access (TDMA) based mobile data network.

The mobile communication terminal may further include a user identification module (UIM), a subscriber identity module (SIM), a universal user authentication module Universal Subscriber Identity Module (" USIM ").

The sleep mode control method of a mobile communication terminal according to the present invention includes the steps of: transmitting a sleep transition request signal (Sleep_Req) to an access point (AP); Receiving a sleep response signal (Sleep_Res) from a base station; And determining whether to enter the sleep mode according to the status of the identification module.

The above-described mobile communication terminal and the sleep mode control method according to the present invention can be expected to have the following effects.

First, it is possible to prevent the interruption by the identification module from being lost by checking the operation state of the identification module before entering the sleep mode.

Second, an interruption of the identification module can be performed even in the sleep mode.

The above objects, features and advantages will become more apparent from the following detailed description in conjunction with the accompanying drawings. Hereinafter, a mobile communication terminal according to the present invention will be described in detail with reference to the drawings. In addition, the detailed description of the known technology, which is considered to be a possibility of blurring the gist of the present invention, will be omitted.

The terminal described in this specification may be a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a Navigation, A digital camera, and an MPEG layer 3 player (MP3P). It is needless to say that the terminal to which the present invention is applicable is not limited to the above-described types, and may include all of the terminals.

Referring to FIG. 3, a terminal related to the present invention will be described in terms of functional components. 3 is a block diagram of a terminal related to an embodiment of the present invention.

3 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160 An interface unit 170, a control unit 180, a power supply unit 190, and the like. Figure 3 shows a terminal with various components. However, not all illustrated components are required. A terminal may be implemented by more components than the components shown, or a terminal may be implemented by fewer components.

Hereinafter, the components constituting the terminal 100 shown in FIG. 3 will be described in order.

The wireless communication unit 110 may include at least one component that performs wireless communication between the terminal 100 and the wireless communication system or wireless communication between the terminal 100 and the network in which the 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, and a location information module 115 .

The broadcast receiving module 111 receives broadcast signals and / or broadcast-related information from an external broadcast management server through a broadcast channel.

Here, the broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may be a server for generating and transmitting broadcast signals and / or broadcast-related information, or a server for receiving broadcast signals and / or broadcast-related information generated by the broadcast server and transmitting the generated broadcast signals and / or broadcast- related information. In addition, the broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. In addition, the broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcast-related information may also be provided through a mobile communication network, in which case it may be received by the mobile communication module 112.

Broadcast-related information can exist in various forms. For example, an EPG (Electronic Program Guide) of DMB (Digital Multimedia Broadcasting) or an ESG (Electronic Service Guide) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 receives broadcasting signals using various broadcasting systems. In particular, the broadcasting receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) , 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 broadcasting systems that provide broadcast signals as well as the digital broadcasting 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 radio signals to at least one of a base station, an external terminal, and a server on a mobile communication network. Here, the wireless signal may include various types of data depending on a voice call signal, a video call signal, or a character / multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the terminal 100.

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

In addition, the position information module 115 is a module for confirming or obtaining the position of the terminal 100. One example is a Global Position System (GPS) module. The GPS module receives position information from a plurality of satellites. Here, the location information may include coordinate information displayed in latitude and longitude. For example, the GPS module can calculate the current position according to the triangular method at three different distances, using the precisely measured time and distance from three or more satellites. For example, a method of obtaining distance and time information from three satellites and correcting the error by one satellite may be used. In particular, the GPS module can acquire latitude, longitude and altitude as well as three-dimensional velocity information and accurate time from the position information received from the satellite.

An audio / video (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 communication mode or the photographing mode. Then, the processed image frame can 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. [ The camera 121 may include two or more cameras according to the configuration of the terminal 100.

The microphone 122 receives an external sound signal through a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. The microphone 122 may implement various noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 130 receives the input operation from the user and generates input data for controlling the operation of the terminal 100. [ The user input unit 130 may include a key pad, a dome switch, a touch pad (static / static), a jog wheel, a jog switch, and the like. Particularly, when the touch pad has a mutual layer structure with the display unit 151, which will be described later, it can be called a touch screen.

The sensing unit 140 senses the current state of the terminal 100 such as the open / close state of the terminal 100, the position of the terminal 100, the presence of the user, the orientation of the terminal 100, And generates a sensing signal for controlling the operation of the terminal 100. For example, when the terminal 100 is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. In addition, a sensing function related to whether or not the power supply unit 190 is powered on, whether the interface unit 170 is coupled to an external device, and the like can also be performed.

The interface unit 170 serves as an interface with all the external devices connected to the terminal 100. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, Video input / output (I / O) ports, earphone ports, and the like.

Here, the identification module is a chip that stores various information for authenticating the usage right of the terminal 100, and includes a user identification module (UIM), a subscriber identity module (SIM) , A Universal Subscriber Identity Module (" USIM "), and the like. In addition, devices with identification modules (hereinafter referred to as "identification devices") may be manufactured in the form of smart cards. Accordingly, the identification device can be connected to the terminal 100 through the port. The interface unit 170 receives data from an external device or receives power from the external device, transfers the data to each component in the terminal 100, or transmits data in the terminal 100 to an external device.

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

The display unit 151 displays and outputs information to be processed by the terminal 100. For example, when the terminal is in the call mode, a UI (User Interface) or GUI (Graphic User Interface) associated with the call is displayed. When the terminal 100 is in the video communication mode or the photographing mode, the captured or / and received image or UI and GUI are displayed.

Meanwhile, as described above, when the display unit 151 and the touch pad have a mutual layer structure to constitute a touch screen, the display unit 151 can be used as an input device in addition to the output device. The display unit 151 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, a three-dimensional display 3D display). In addition, according to the embodiment of the terminal 100, there may be two or more display units 151. FIG. For example, the terminal 100 may be provided with an external display unit (not shown) and an internal display unit (not shown) at the same time.

The audio output module 152 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, and a broadcast reception mode. In addition, the sound output module 152 outputs an acoustic signal related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the 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 the occurrence of an event of the terminal 100. Examples of events that occur in a terminal include receiving a call signal, receiving a message, and inputting a key signal. The alarm unit 153 may output a signal for informing occurrence of an event in a form other than an audio signal or a video signal. For example, it is possible to output a signal in a vibration mode. When a call signal is received or a message is received, the alarm unit 153 can output a vibration to notify it. Or when the key signal is input, the alarm unit 153 can output the vibration by the feedback to the key signal input. The user can recognize the occurrence of an event through the vibration output as described above. Of course, a signal for notifying the occurrence of an event may also be output through the display unit 151 or the sound output module 152.

The memory 160 may store a program for processing and controlling the control unit 180 and may store a function for temporarily storing input / output data (e.g., a phone book, a message, a still image, .

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory) A random access memory (SRAM), a read only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM) , An optical disc, and the like. In addition, the terminal 100 may operate a web storage that performs a storage function of the memory 160 on the Internet.

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

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

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

According to a hardware implementation, the embodiments described herein may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays Microprocessors, microprocessors, and electrical units for performing functions, as will be described in more detail below. In some cases, such embodiments may be implemented by the controller 180.

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

Hereinafter, in order to perform the operation of the mobile communication terminal according to the present invention, the organic operation relationship among the respective components of the mobile communication terminal will be described in detail with reference to FIG.

The present invention is a technique for preventing the interruption of the identification module from being lost when the terminal enters the sleep mode. This operation can also be applied to an Orthogonal Frequency Division Multiplexing Access / Time Division Multiplexing Access (BSC) based mobile data network.

In the foregoing, the terminal related to the present invention has been examined from the viewpoint of components according to functions. Hereinafter, the terminal related to the present invention will be further described with reference to FIGS. 4 and 5 from the viewpoint of the components according to the outline. Hereinafter, for simplicity of explanation, a slider type terminal will be exemplified among various types of 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 a slider type terminal, but can be applied to all types of terminals including the above-mentioned types.

4 is a perspective view of a terminal according to an exemplary embodiment of the present invention.

The terminal 100 according to the present invention includes a first body 200 and a second body 205 that is slidable along at least one direction on the first body 200. [

Meanwhile, when the terminal 100 according to the present invention is a folder type, it includes a first body and a second body that is configured to fold or unfold at least one side of the first body.

The state where the first body 200 is disposed in a state of being overlapped with the second body 205 may be referred to as a closed configuration and the first body 200 may be referred to as a second body 205 ) May be referred to as an open configuration.

Although the terminal 100 operates mainly in the standby mode in the closed state, the standby mode is also canceled by the user's operation. The terminal 100 operates mainly in the communication mode in the open state, but is also switched to the standby mode after the user's operation or a predetermined time elapses.

The casing (casing, housing, cover, etc.) constituting the outer appearance 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 additionally disposed between the first front case 220 and the first rear case 225.

The cases may be formed by injection molding of a synthetic resin or may be formed of a metal material such as stainless steel (STS) or titanium (Ti).

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

The display unit 151 includes a liquid crystal display (LCD), an OLED (Organic Light Emitting Diodes), and the like that visually express information.

In addition, the touch pad is superimposed on the display unit 151 in a layer structure, so that the display unit 151 may operate as a touch screen to enable information input 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 so as to be suitable for photographing an image or a moving image for a user or the like.

As in the case of the first body 200, the case constituting the outer appearance 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 front surface of the second body 205, specifically, the second front case 230.

The third user input unit 245, the microphone 122, and the interface unit 170 may be disposed in at least one of the second front case 230 and the second rear case 235.

The first to third user input units 210, 215, and 245 may be collectively referred to as a user input unit 130 and may be employed in any manner as long as the user operates in a tactile manner with a tactile impression.

For example, the user input unit 130 may be embodied as a dome switch or a touch pad capable of receiving a command or information by a push or touch operation of a user, or may be a wheel, a jog type, a joystick, Or the like.

In a functional aspect, the first user input unit 210 is for inputting commands such as start, end, scrolling, etc., and the second user input unit 215 is for inputting numbers, letters, symbols and the like. Also, the third user input 245 may operate as a hot-key for activating a special function in the terminal.

The microphone 122 may be implemented in a form suitable for receiving voice, sound, etc. of the user.

The interface unit 170 is a channel through which the terminal related to the present invention can exchange data with an external device. For example, the interface unit 170 may be a wired or wireless connection terminal for connecting to an earphone, a port for short-range communication (for example, an IrDA port, a Bluetooth port, a wireless LAN port, etc.), or power supply terminals for supplying power to the terminal.

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

A power supply unit 190 for supplying power to the terminal 100 is mounted on the second rear case 235 side.

The power supply unit 190 may be, for example, a rechargeable battery and may be detachably coupled for charging or the like.

5 is a rear perspective view of the terminal shown in FIG.

Referring to FIG. 5, a camera 121 may be further mounted on the rear surface of the second rear case 235 of the second body 205. The camera 121 mounted on the second body 205 has a photographing direction which is substantially opposite to that of the camera 121 of the first body 200. The camera 121 of the first body 200, Lt; / RTI >

For example, the camera 121 of the first body 200 has low pixels so that it is easy to capture a face of the user and transmit the captured image to the other party in case of a video call or the like, and the camera 121 of the second body 205 It is preferable to have a high pixel since a general subject is photographed and is not immediately transferred.

A flash 250 and a mirror 255 may be additionally disposed adjacent to the camera 121 of the second body 205. The flash 250 shines light toward the subject when the subject of the subject is photographed by the camera 121 of the second body 205. The mirror 255 allows the user to illuminate the user's own face or the like when the user intends to take a picture of himself / herself (self-photographing) by using the camera 121 of the second body 205.

The second rear case 235 may further include an acoustic output module 152.

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

In addition, an antenna 260 for receiving broadcast signals may be disposed on one side of the second rear case 235 in addition to the antenna for communication. The antenna 260 may be installed to be detachable from 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 in this figure.

In the above description, the camera 121 or the like is disposed on the second body 205, but the present invention is not limited thereto.

For example, at least one of the configurations described as being disposed in the second rear case 235, such as the camera 121 of the second body 205, may include the first body 200, 225). In such a case, there is an advantage that the configuration (s) disposed in the first rear case 225 in the closed state is protected by the second body 205. Even if the camera 121 of the second body 205 is not separately provided, the camera 121 of the first body 200 is rotatably formed so that the photographing direction of the camera 121 of the second body 205 As shown in FIG.

The terminal 100 shown in Figs. 3 to 5 can be used in a communication system capable of transmitting data through a frame or a packet, including a wired / wireless communication system and a satellite-based communication system Lt; / RTI >

Hereinafter, a wireless communication system in which a terminal according to an embodiment of the present invention can operate will be described with reference to FIG.

The communication system may utilize different air interfaces and / or physical layers. For example, wireless interfaces that can be used by a communication system include Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), Universal Mobile Telecommunications Systems (UMTS), in particular Long Term Evolution (LTE), Global System for Mobile Communications (GSM) However, the present invention is applicable to all communication systems including a CDMA wireless communication system.

6, the CDMA wireless communication system includes a plurality of terminals 100, a plurality of base stations (BSs) 270, base station controllers (BSCs) 275, , And a mobile switching center ('MSC') 280. MSC 280 is configured to be coupled to a Public Switched Telephone Network (" PSTN ") 290, and is also configured to be coupled to BSCs 275. BSCs 275 may be coupled in pairs with 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. Accordingly, 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 in a particular direction of radial direction from the 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, and each of the plurality of frequency assignments has a specific spectrum (e.g., 1.25 MHz, 5 MHz, etc.).

The intersection of sector and frequency assignment may be referred to as a CDMA channel. The BS 270 may be referred to as a Base Station Transceiver Subsystem (BTSs). In this case, the word "base station" may be referred to as a combination of one BSC 275 and at least one BS 270. [ The base station may also represent a "cell site ". Or each of the plurality of sectors for a particular BS 270 may be referred to as a plurality of cell sites.

As shown in FIG. 6, a broadcasting transmitter (BT) 295 transmits a broadcasting signal to the terminals 100 operating in the system. The broadcast receiving module 111 shown in FIG. 3 is provided in the terminal 100 to receive a broadcast signal transmitted by the BT 295.

In addition, FIG. 6 illustrates several Global Positioning System ('GPS') satellites 300. The satellites 300 help locate at least one of the plurality of terminals 100. Although FIG. 6 shows two satellites, useful location information may be obtained by two or more satellites. The location information module 115 shown in FIG. 3 cooperates with the satellites 300 to obtain desired location information. Here you can track your location using all of the technologies that can track your location, as well as your GPS tracking technology. Also, at least one of the GPS satellites 300 may optionally or additionally be responsible for satellite DMB transmission.

Among the typical operations of a wireless communication system, the BS 270 receives a reverse link signal from the various terminals 100. At this time, the terminals 100 are in the process of 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 by a particular base station 270. The resultant data is transmitted to the connected BSC 275. The BSC 275 provides call resource assignment and mobility management functions, including the organization of soft handoffs between the base stations 270. The BSC 275 also transmits the received data to the MSC 280 and the MSC 280 provides additional transmission services for connection with the PSTN 290. Similarly, the PSTN 290 connects to the MSC 280, the MSC 280 connects to the BSCs 275, and the BSCs 275 communicate with the BSs 270 ).

7 is a diagram illustrating a TDMA-based sleep mode control method based on time division multiple access.

The operation of the terminal includes an operation of an access terminal (AT), an awake interval (Pawake), a sleep interval (Psleep), and a listening interval (Plistening).

The sleep interval (Pawake) is a normal mode operation interval in which data can be transmitted and received, and the sleep interval (Psleep) is a sleep mode operation interval for saving power of the UE. The listening interval (Plistening) is an operation interval for notifying a subscriber station in an access point (AP) state that there is downlink data to be transmitted and receiving the downlink data.

If there is no transmission / reception of up / down data for a certain period of time, the terminal switches to the sleep mode to save the power consumption of the terminal. This sleep mode time increases exponentially when there is no transmission / reception of up / down data in the listening interval (Plistening).

To switch the terminal to the sleep mode, a Sleep_Request (Sleep_REQ) message is transmitted to the AP (S100). The Sleep_Request message includes maximum / minimum sleep interval information and time information. The AP receiving the Sleep_Request message from the terminal transmits a Sleep_Response (Sleep_RSP) message including the sleep mode switching start point and the listening interval information to the mobile station in step S110. After receiving the Sleep_Response message received from the AP, the mobile station switches to the sleep mode. When there is downlink data to be transmitted to the terminal in the sleep mode, the AP calculates a listening interval of the corresponding terminal and transmits a Traffic_Indication message 12 including an identifier of the terminal in the listening interval to all terminals (S120). Meanwhile, when the sleep interval (Psleep) expires, the mobile station switches to the listening mode and receives a Traffic_Indication message broadcast in the AP during the listening interval (S130). At this time, if the terminal includes its own ID in the Traffic_Indication message, it switches to the normal mode to receive the downlink data. If the terminal does not include its ID in the Traffic_Indication message and the listening interval (Plistening) expires, And operates in the sleep mode during the sleep interval (Psleep).

The present invention is a technique implemented in the sleep mode interval (Psleep). 8 is a flowchart showing the progress of the present invention.

The AT transmits a sleep change request signal Sleep_Req to an access point (AP) (S801).

Upon receiving the sleep change request signal (Sleep_Req) from the terminal, the base station (AP) transmits a sleep response signal (Sleep_Res) including the sleep mode switching start point and the listening interval information (S802).

In step S803, the control unit of the terminal receiving the sleep response signal (Sleep_Res) from the base station AP confirms the state of the identification module mounted or connected to the terminal.

Herein, the identification module refers to a device mounted on a terminal or connected by a predetermined interface device. As the identification module, any one of a user identification module (UIM), a subscriber identity module (SIM), and a universal user identity module (USIM) have. It is confirmed whether the identification module is activated (S804).

If the identification module is activated, the sleep mode is not entered (S806). If the identification module is not activated, the sleep mode is entered (S805)

9 is a flowchart illustrating an operation when an interrupt of the identification module occurs in a terminal operating in a sleep mode.

The terminal receives the sleep mode grant signal from the base station and is operating in the sleep mode (S901).

It is determined whether an interrupt by the identification module (for example, SIM) has occurred (S902).

If an interrupt by the identification module occurs, the sleep mode is canceled and the mode is switched to the listening mode to implement an operation corresponding to the interrupt by the identification module (S904).

If the interruption by the identification module has not occurred, it is determined whether or not the sleep interval included in the sleep mode response signal received from the base station is exceeded, and whether or not the sleep mode is maintained is determined (S903).

The current may be consumed as compared with the maintenance of the sleep mode. However, even if the frequency of occurrence of such a case is taken into consideration, the loss of the interrupt may be small compared to the interruption of the identification module have.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The present invention is not limited to the drawings. In addition, all or some of the embodiments may be selectively combined so that various modifications may be made to the embodiments described above.

1 is an exemplary view showing a connection processing procedure.

2 is an example of a case in which the SIM interruption is lost in the sleep mode.

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

4 is a front perspective view of a terminal according to an embodiment of the present invention.

5 is a rear view of a terminal according to an embodiment of the present invention.

6 is a block diagram of a wireless communication system in which a terminal may operate in accordance with an embodiment of the present invention.

FIG. 7 is a flow chart of the sleep mode control. FIG.

8 is a flowchart illustrating a sleep mode control method according to an exemplary embodiment of the present invention.

9 is a flowchart illustrating a sleep mode control method according to another embodiment of the present invention.

Claims (9)

A mobile communication module for transmitting and receiving a radio signal to and from a base station on a mobile communication network; An identification module storing various information for authenticating a use right of the device; And a control unit for confirming an operation state of the identification module and outputting a control signal for entering a sleep mode when a sleep mode response signal (Sleep_Res) is received from an access point (AP) through the mobile communication module . The mobile communication terminal of claim 1, wherein the mobile communication module transmits and receives a radio signal of a time division multiple access (TDMA) based mobile data network. The system of claim 1, wherein the identification module comprises a user identity module (UIM), a subscriber identity module (SIM), a universal user identity module (USIM) Wherein the mobile communication terminal is a mobile communication terminal. The mobile communication terminal of claim 1, wherein the control unit outputs a control signal for releasing a sleep mode when an interrupt signal for the identification module is generated. Transmitting a sleep transition request signal (Sleep_Req) to an access point (AP); Receiving a sleep response signal (Sleep_Res) from a base station; And determining whether to enter the sleep mode according to the status of the identification module. 6. The method of claim 5, wherein the mobile communication terminal transmits and receives a radio signal of a time division multiple access (TDMA) based mobile data network. 6. The system of claim 5, wherein the identification module comprises a user identity module (UIM), a subscriber identity module (SIM), a universal user identity module (USIM) The sleep mode control method comprising the steps of: The sleep mode control method of claim 5, further comprising the step of releasing a sleep mode when an interrupt signal of the identification module is generated. delete

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