KR100590675B1 - Mobile Communication Terminal Having PPP Session Timer and Method for Connecting Packet Data Call by using PPP Session Timer - Google Patents

Abstract

The present invention provides a mobile communication terminal having a function of closing and initializing a PPP session remaining in a mobile communication terminal by using a terminal Point-to-Point Protocol (PPP) session timer in a packet service; The present invention relates to a method of connecting a packet data call using a terminal PPP session timer.

The present invention provides a mobile communication terminal having a terminal PPP session timer function, comprising: a program memory storing a terminal PPP session timer driving program having a function of releasing and initializing a PPP session in the mobile communication terminal; A data storage unit serving as a data buffer during operation of the mobile communication terminal and storing PPP session procedure related information and IP information connected to a network during the packet service; A mode state storage unit which stores a mode according to any one of an active state or an idle state of the mobile communication terminal 102 as a state flag; And a microprocessor controlling an operation of the mobile communication terminal with reference to the state flag stored in the mode state storage unit, and controlling a function of executing the terminal PPP session timer driving program. A mobile communication terminal having a PPP session timer function is provided.

According to the present invention, when the mobile communication terminal enters a Dormant state (Dormant State) by operating the terminal PPP session timer itself in the mobile terminal by releasing and initializing the PPP session in the mobile terminal independently of the network, By shortening the initialization process when reconnecting, the packet service can be improved.

Packet service, point-to-point protocol, ppp session, dormant state

Description

A mobile communication terminal having a terminal ppp session timer function and a method for connecting a packet data call using a terminal ppp session timer {mobile communication terminal having ppp session timer and method for connecting packet data call by using ppp session timer}

Figure 1a is a diagram briefly showing the configuration of a dial-up network using a conventional mobile communication terminal,

Figure 1b is a simplified view showing the configuration of the wireless Internet using a conventional mobile communication terminal,

2 is a block diagram schematically illustrating a configuration network of a CDMA-2000;

3A is a flowchart illustrating a PPP session release procedure when a wireless link is active;

3B is a flowchart illustrating a PPP session release procedure when the wireless link is in an idle state;

4 is a flowchart illustrating a process of retrying a packet service after a mobile communication terminal enters a dormant state in a conventional wireless data service;

5 is a block diagram schematically showing an internal configuration of a mobile communication terminal having a terminal PPP session timer function according to the present invention;

6 is a flowchart illustrating a process of retrying packet service after a mobile communication terminal enters a dormant state according to execution of a terminal PPP session timer according to the present invention.

<Description of Symbols for Main Parts of Drawings>

100: computer 102: mobile communication terminal

106: packet switched data network 200: base station

202: base station controller 204: base station system

206: mobile communication switching center 208: public switched telephone network

210: packet data serving node 212: home agent

214: authentication server 216: router

218 data core network 300 general ATM connection network

502: program memory 504: data storage

506: mode state storage unit 508: subscriber information storage unit

510: microprocessor 512: digital signal processing unit

514: baseband converter 522: RF signal processor

The present invention relates to a mobile communication terminal having a terminal PPP session timer function and a method for connecting a packet data call using the terminal PPP session timer. More specifically, when the mobile communication terminal enters the idle state, the mobile communication terminal for releasing and initializing the PPP session remaining inside the mobile communication terminal using the terminal PPP session timer in the mobile communication terminal independently of the network; The present invention relates to a method of connecting a packet data call using a terminal PPP session timer.

The wireless data service is a service that enables data transmission using a mobile communication terminal, which is basically similar to the existing wired data communication, except that the connection method between the terminal and the network is wireless.

The wireless data service is divided into a circuit switching method and a packet switching method according to a method of allocating network resources. The wireless data service is called circuit data. Data transmitted in a packet switched scheme is called packet data. In the circuit switching method, wireless data transmission, that is, circuit data, is a method of transmitting data in a state in which a circuit is continuously connected between a transmitter and a receiver. It refers to a method of allocating radio resources only when necessary and transmitting them in packet units. These line- and packet-based wireless data is recommended by IS-707, which describes a set of and overall contents related to CDMA (IS-95) wireless data transmission. IP) techniques for providing resources for transmitting packets.

The mobile terminal is initially used as a relay model for connecting to other terminals such as a computer or a personal digital assistant (PDA) to form a dial-up network, thereby improving the performance of the terminal, and developing and processing display screens. The rapid growth of capabilities has enabled wireless data services as mobile terminals themselves, in this case communicating with the network through a Point-to-Point Protocol (PPP) session. In this case, the mobile communication terminal refers to a portable communication terminal capable of simultaneously supporting dial-up networking and wireless data service, and thus encompasses all terminals having such a function.

Both dial-up networking and wireless data services are designed to communicate with the network using PPP. When using dial-up networking, the mobile terminal uses the PPP protocol stack of the connected computer to communicate with the Radio Link Protocol (RLP). (Traffic) only, and when using wireless data service, the mobile communication terminal communicates with the network using its own PPP protocol stack. In both cases, the PPP session is used.

In general, PPP is a lower layer of the PPP protocol stack. It is a protocol that allows a computer to connect to the Internet using a telephone line and a modem. PPP is the most common Internet protocol that allows computers to send and receive TCP / IP packets, which are blocks of information transmission on the Internet. Originally, local area network (LAN) device manufacturers used to connect different remote routers / bridges. It is a protocol designed, but is now used more as a protocol for connecting PCs and Internet Service Providers (ISPs). That is, PPP performs PPP Negotiation after connecting to an Internet provider, and enables real-time data transmission through IP communication to use Internet service.

FIG. 1A illustrates a configuration of dial-up networking in which a mobile communication terminal is used as a relay model, that is, a computer is connected to an internet network.

The computer 100 is connected to the mobile communication terminal 102 via a cable Rm, the mobile communication terminal 102 is connected to a base station (BS) 104 via a wireless interface (Um), The base station 104 is connected to a Packet Switched Data Network (PSDN) 106. Here, the PSDN 106 is a network constructed for the purpose of data transmission and reception, unlike a dedicated line capable of transmitting and receiving voice and data through a telephone line, and refers to a network configured to be used by an unspecified majority by connecting an information exchange line to an exchange facility. . The computer 100 has a PPP protocol stack 108 therein, and the mobile communication terminal 102 opens traffic to the computer 100 through the PPP information and the RLP. When the traffic is connected, the computer 100 resets the protocol stack using the emulator and is assigned an IP and connected with the PSDN 106. Here, the emulator attempts to dial in, performs PPP procedures, sets up the protocol stack, assigns IP, and performs authentication. That is, in the dial-up networking, the mobile communication terminal is in charge of only the RLP and traffic, and the PPP protocol stack above the PPP is in charge of the computer.

Figure 1b shows a configuration in which the mobile communication terminal is directly connected to the wireless Internet network.

The mobile communication terminal 102 is connected to the PSDN 106 via a base station 104. In this case, the mobile communication terminal 102 has its own PPP protocol stack 112, and after establishing traffic using this, it sets up a protocol stack to open a PPP session and connect a call. In order to open the PPP session, a call connection and a protocol are processed and authenticated.

The mobile communication system has been developed through the first generation analog AMPS (Advanced Mobile Phone System), the second generation Cellular (Cellurar) / Personal Communication Service (PCS), and the third generation high speed data. International Mobile Telecommunication-2000 (IMT-2000) has been developed.

The IMT-2000 enables roaming using the same frequency band (2 GHz) around the world. There are two types of European asynchronous CDMA and North American synchronous CDMA. There are two types of CDMA mobile communication systems in North America, CDMAOne and CDMA-2000. CDMAOne is for an entire system including IS-95, which is a wireless section protocol, and CDMA-2000 is a whole system based on IS-2000, a wireless section protocol. Means. Here, code division multiple access (CDMA) refers to a method of transmitting a signal between a base station and a terminal in a wireless section, and spread spectrum communication using a spread code having a transmission bandwidth much larger than that of an information signal to be transmitted. Use the method.

2 is a block diagram schematically illustrating a configuration network of a CDMA-2000.

A base station transceiver system (BTS) 200 performs a function of wirelessly matching the mobile communication terminal 102 to provide a mobile communication service to a mobile subscriber. The interface between the base station and the mobile terminal follows the IS-2000 standard.

A base station controller (BSC) 202 connects a voice call and a line data call between the BTS 200 and the MSC 206 and a packet data call between the BTS 200 and the DCN 218. do. It performs vocoding function for voice calls and operates, maintains and repairs the base station.

Hereinafter, the BTS 200 and the BSC 202 are collectively referred to as a base station system (BSS) 204.

A Mobile Switching Center (MSC) 206 is a system that performs a switching function in a CDMA-2000 network and connects a mobile subscriber in a network with a subscriber in another network. It is also connected with various additional systems to provide additional services.

The Public Switched Telephone Network (PSTN) 208 is a wired public telephone network provided by a general wired telecommunications provider, and is configured to allow telephone calls between subscribers by connecting a telephone line to a telephone exchange facility.

Data core network (DCN) 218 is a separate network required to provide packet data communication services such as Internet communications to mobile subscribers, and provides PDSN 210, router 216, AAA (Authorization) to provide mobility to subscribers. , Authentication and Accounting) 214, HA 212, and the like. In the case of the PDSN 210, the BSC 202 and the DCN 218 match.

The Packet Data Serving Node (PDSN) 210 functions as an interface between the DCN 218 and the external Internet network to route / tunnel packets directed to a mobile node (MN) and manage location information data of the MN. Do this.

Home Agent (HA) 212 is an initial registration, IP routing and route optimization, mobile subscriber's address management and mobile information management, tunneling and reverse to provide connection with various servers of mobile IP (Internet Protocol) and the Internet. It performs functions such as tunneling.

Authentication Authorization Accounting (AAA) 214 performs a role of subscriber server in mobile IP, performs key distribution and billing processing resource management functions related to authentication and authorization, and router 216. ) Is used for the connection between the PDSN 210 and the Internet 132.

The procedure of wireless data call processing between the mobile terminal and the system is briefly described as follows. First, the CDMA radio segment protocol IS-95 or IS-2000 is formed, and then RLP initialization, PPP initialization, TCP / IP initialization, and so on. Initialization and configuration are performed. For wireless data call processing, additional layer negotiation is additionally required as compared with conventional voice call processing. Here, RLP (Radio Link Protocol) is a layer that performs a dedicated function for data transmission of the data link layer, and TCP / IP (Transmissiant Control Protocol / Internet Protocol) is a protocol used when connecting communication networks constituting the Internet. It is responsible for moving data packets from one place to another. TCP manages the flow of data and ensures that the data is accurate.

On the other hand, while communicating with the network through a PPP session, if the packet data is in the Dormant state, the wireless section is disconnected so that other subscribers can use the same line, which cuts the radio (CDMA) link but is higher. The PPP session, which is the data link of, is still maintained, and when entering the active state again, the upper layer does not need to be reset, so only the wireless link is established and the service is immediately available.

The transition to the dormant state is largely performed by the BSS 204 / MSC 206 to instruct the dormant state transition to the mobile communication terminal 102 and the transition to the dormant state at the request of the mobile communication terminal 102. There is a branch. When the inactivity time expires in the active state, the system enters the dormant state. The inactivity time may be controlled by a message (service control command) or the base station may command a basic time.

On the other hand, when the mobile communication terminal 102 transitions to a dormant state and there is no data to continuously transmit and receive and no longer needs to maintain a PPP session, a timer for transitioning to a null state is operated. It is called PPP inactivity timer and the default value is 10 minutes. As such, the procedure of releasing PPP of a packet data call by the PPP inactivity timer is different from that of the call release request of the mobile communication terminal 102, which is at the request of the PDSN 210. When the radio link is largely active, It is divided into the case of and the state of rest.

3A is a flowchart illustrating a PPP session release procedure when the radio link is active and the interface between the BSC 202 and the PDSN 210 (R-P interface) is active.

When the PPP inactivity time is exceeded, the PDSN 210 requests a PPP session release to a Radio Packet Interface Processor (RPP) in a general ATM switch network (GAN) 300 (S300). The RPP transmits a response indicating that the message has been received to the PDSN 210 (S302), and transmits a connection release request for the packet data call to the BSS 204 (S304).

If the BSS 204 requests to release the RP interface to the RPP after releasing the connection for the packet data call (S306), the RPP sends a response to the BSS 204 and the RP interface in association with the PDSN 210. To release (S308).

The GAN releases the R-P interface in association with the PDSN 210 (S310 and S312).

The BSS 204 requests call release to the MSC 206 (S314), and when the MSC 206 sends a call release command (S316), the BSS 204 releases the traffic channel and vocoder and sends it to the MSC 206. Inform that the call release is completed (S318).

3B is a flowchart illustrating a PPP session release procedure when the wireless link is idle and the interface between the BSC 202 and the PDSN 210 (R-P interface) is active.

If the PPP inactivity time is exceeded, the PDSN 210 requests the release of the PPP session to the RPP in the GAN 300 (S320). The RPP transmits a response indicating that the message has been received to the PDSN 210 (S322), and transmits a Dormant connection release request to the BSS 204 (S324).

When the BSS 204 releases the idle connection and notifies it to the RPP (S326), the RPP transmits a response thereto (S328) and releases the R-P interface in association with the PDSN 210 (S330 and S332).

The BSS 204 updates location information in association with the MSC 206 (S334 and S336).

As such, when the mobile communication terminal 102 communicates with the network through the PPP session and the packet data enters the idle state and the PPP inactivity time is exceeded, the network between the BSS 204 and the PDSN 210 establishes a PPP session. 3A and 3B, the network establishes a PPP session established between the BSS 204 and the PDSN 210 without transmitting any message about the PPP session release in the process of releasing the PPP session. Just release it. That is, in the conventional packet service, if the PPP session in the network is released after the PPP inactivity time is exceeded after the packet data enters the idle state, the mobile communication terminal 102 is not aware of the release of the PPP session in the network. Therefore, only the PPP session in the network is released, but the PPP session information remains in the mobile communication terminal 102.

4 is a flowchart illustrating a process of retrying a packet service when a PPP session is released by a PPP inactivity timer in a network after the mobile communication terminal 102 enters a dormant state in a conventional wireless data service.

The process of entering the idle state by the mobile communication terminal 102 is as described above, and when the mobile communication terminal 102 enters the idle state (S400), the PPP inactivity timer is started (S402).

The default value of the PPP inactivity timer can be changed in the network for about 10 minutes. When the default expires (S404), the PPP session is released in the network (S406). The process of releasing the PPP session in the network is as described above. .

If the wireless data service user attempts packet service again while the PPP session is released in the network (S408), the mobile terminal 102 still has a PPP session despite the release of the PPP session in the network as described above. Since it remains, the PPP session in the mobile communication terminal 102 must be terminated and initialized separately for reconnection of the wireless data service (S410).

When the PPP session in the mobile communication terminal 102 is terminated and initialized, the mobile communication terminal 102 is assigned a new PPP procedure and IP, and through the authentication process, protocols for wireless data service are established to connect the packet data call (S412). ).

When the packet data is transmitted and received again while the PPP session is released in the network as described above, PPP session information remains in the mobile communication terminal 102 so that the mobile communication terminal 102 is not initialized during the PPP procedure. Since the PPP session information is requested, the PPP session connection with the network does not proceed until the wireless data service is terminated, and the process of terminating and initializing the PPP session in the mobile communication terminal 102 separately for reconnection of the wireless data service. Bar (S410), there was a problem that the connection process for continuing the packet service takes a long time without being connected smoothly.

In order to solve this problem, the present invention, when the terminal enters the idle state in the wireless data service by operating the terminal PPP session timer itself in the mobile communication terminal, the mobile communication in advance independent of the network before continuing the packet service An object of the present invention is to provide a mobile communication terminal and a method for shortening the process of initializing a PPP session when reconnecting to continue packet service by releasing and initializing a PPP session in the terminal.

According to a first object of the present invention for achieving the above object, in a mobile communication terminal having a terminal PPP session timer function in a packet service, a terminal PPP session timer having a function of releasing and initializing a PPP session in the mobile communication terminal A program memory in which a driving program is stored; A data storage unit which serves as a data buffer during operation of the mobile communication terminal and stores PPP session procedure related information and IP information connected to a network in a packet service; A mode state storage unit which stores a mode according to one of an active state and a dormant state of the mobile communication terminal as a state flag; And a microprocessor controlling an operation of the mobile communication terminal with reference to a state flag stored in the mode state storage unit and controlling a function of executing a terminal PPP session timer driving program. It provides a mobile communication terminal having a.

According to a second aspect of the present invention, a method for connecting a packet data call using a terminal PPP session timer in a mobile communication terminal supporting a packet service, comprising: (a) a mobile communication terminal entering a dormant state while executing a packet service; Initiating a count of the terminal PPP session timer in case; (b) expiring the terminal PPP session timer when a preset time set in the terminal PPP session timer arrives; (c) releasing and initializing the PPP session remaining in the mobile communication terminal; And (d) connecting a packet data call between the mobile communication terminal and a wired / wireless communication network providing a packet service.

According to a third object of the present invention, a method for releasing and initializing a PPP session remaining in a mobile communication terminal using a terminal PPP session timer in a mobile communication terminal supporting a packet service, comprising: (a) mobile communication during packet service execution; Starting a count of the terminal PPP session timer when the terminal enters a Dormant state; (b) expiring the terminal PPP session timer when a preset time arrives; And (c) releasing and initiating a PPP session remaining in the mobile communication terminal, and releasing and initiating a PPP session remaining in the mobile communication terminal using a terminal PPP session timer.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

5 is a block diagram schematically illustrating an internal configuration of a mobile communication terminal having a terminal PPP session timer function according to an embodiment of the present invention.

The mobile communication terminal 500 according to the present invention includes a program memory 502, a data storage unit 504, a mode state storage unit 506, a subscriber information storage unit 508, a microprocessor 510, and a digital signal processing unit ( DSP: Digital Signal Processor (512), Baseband Converter 514, Speaker 516, Microphone 518, Antenna 520, RF Signal Processing Unit 522 and the like.

Mobile communication terminal 500 according to an embodiment of the present invention is a PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, GSM (Global System for Mobile) phone, W-CDMA (Wideband CDMA) phone, CDMA-2000 phone, Mobile Broadband System (MBS) phone and the like. Here, MBS phone refers to a mobile phone to be used in the fourth generation system currently being discussed.

The program memory 502 stores protocol software for implementing functions of the terminal itself and processing messages transmitted and received from the network, and also stores a terminal PPP session timer driving program according to an embodiment of the present invention. The terminal PPP session timer driving program includes an IP stored in the data storage unit 504 when the terminal PPP session timer is started when the mobile communication terminal 500 enters a dormant state in a wireless data service and 10 minutes after the terminal PPP session timer is started. By initializing to 0 and initializing the buffers used in the PPP session, the mobile terminal 500 performs a function of switching from the idle state to the idle state in which the PPP session is not connected internally. That is, the terminal PPP session timer driving program operates the terminal PPP session timer by itself in the mobile communication terminal 500 so that the PPP session in the mobile communication terminal is released and initialized independently of the network.

The data storage unit 504 typically functions as a data buffer when executing an operation program of the mobile communication terminal 500, and temporarily stores data input by the key input unit or externally the mobile communication terminal 500. ) Stores data such as text and images. In particular, it stores PPP session procedure related information and IP information connected to the network in wireless data service.

The mode state storage unit 506 stores the current operation mode of the mobile communication terminal 500 selected by the key input unit 104 as a state flag (0, 1, 2, ...). That is, the microprocessor 510 has a unique state for each mode to distinguish whether the mobile communication terminal 500 is a reception mode, an outgoing mode, a reception / outgoing history search mode, a storage mode, a call mode, or the like. The mode state storage unit 506 is updated by assigning a flag. In particular, the mode according to the active state and the idle state of the mobile communication terminal 500 is stored as a state flag.

Subscriber Identity Module (SIM) 508 stores subscriber terminal registration information. Here, the subscriber station registration information is a unique number given to each subscriber station in the mobile communication network, and the subscriber information storage unit 508 is to be inserted in the form of a card. Since this is a general content used in a mobile communication network, a description thereof will be omitted. In addition, the BSS 204 and the MSC 206 should receive information from the mobile communication terminal 500 about whether the mobile communication terminal 500 supports the idle processing for idle state processing. Information about whether the 500 supports the wireless data service is stored.

The microprocessor 510 controls the overall operation of the mobile communication terminal 500 based on the state flag stored in the mode state storage unit 506, and internally, the arithmetic logic operator, register, program counter, command decoder, control Circuit and the like. The microprocessor performs data exchange with input / output devices while automatically performing the function of retrieving and decrypting the instructions stored in the main memory, executing the decrypted instructions, and storing the execution result back in the main memory. . In particular, the microprocessor 510 executes instructions for driving the terminal PPP session timer driving program when the mobile communication terminal 500 is in the idle mode, and the PPP-related IP and mode state storage unit 506 of the data storage unit 504. ) Mode is updated. In addition, the subscriber information storage unit 508 determines the information to perform the execution of the wireless Internet and idle state processing.

The digital signal processor 512 performs a data processing function of encoding or decoding data transmitted to and received from the baseband converter 514 and performing an equalization function to remove noise of a multipath. Digital signal processing processor. In addition, the digital signal processor 512 receives the received message data RX DATA from the baseband converter 514.

The baseband converter 514 converts signals transmitted and received between the RF signal processor 522 and the digital signal processor 512, the speaker 516, and the microphone 518 into baseband signals, and converts the digital-to-analog converter and It performs functions such as analog-digital conversion and the like. In addition, the baseband converter 514 converts the transmission message data TX DATA input from the microprocessor 510 into a transmission message signal TXIQ and outputs it to the RF signal processor 522 or the RF signal processor 522. The received message signal (RXIQ) inputted from) is converted into received message data (RX DATA) and output to the digital signal processor 512. The baseband converter 514 automatically controls the gain for the power of the RF signal processor 522 (AGC).

 The speaker 516 outputs an audio signal output from the baseband converter 514 as an audible sound, and the microphone 518 converts a user's voice input into an electrical signal.

The RF signal processor 522 converts the transmission message signal TXIQ into a radio frequency (RF) signal and outputs it to the antenna 520, or converts an RF signal applied from the antenna 520 into a reception message signal RXIQ. Output to the baseband converter 514. The antenna 520 transmits an RF signal to the air or transmits an RF signal received from the air to the RF signal processor 522.

Meanwhile, in order for the mobile communication terminal 500 to access the wireless Internet through the wireless Internet network and receive the multimedia data, a browser capable of transmitting and receiving data with the wireless Internet using a predetermined protocol should be installed. Such a browser may be a wireless application protocol (WAP) browser, a mobile explorer (ME) browser, an I-mode, a binary runtime environment for wireless (BREW), etc., but is not limited thereto.

FIG. 6 illustrates a process of shortening and initializing a PPP session in a mobile communication terminal 500 upon reconnection of a packet service according to execution of a terminal PPP session timer of the mobile communication terminal 500 according to an embodiment of the present invention. It is a flowchart for doing so.

When the mobile communication terminal 500 enters the idle state (S600), the PPP inactivity timer is started (S602), and the terminal PPP session timer inside the mobile communication terminal 500 is also independently started (S608). The terminal PPP session timer is started by processing the terminal PPP session timer driving program stored in the program memory 502 by the microprocessor 510.

If a predetermined time elapses after the terminal PPP session timer is started, the terminal PPP session timer expires (S610), which will be 10 minutes as a preferred embodiment of the present invention with the default value of the terminal PPP session timer expired. The default value at which the terminal PPP session timer expires is adjustable within the mobile communication terminal 500 and preferably adjusted to the default value of the PPP inactivity timer in the network.

When the terminal PPP session timer expires, the PPP session in the mobile communication terminal 500 is released and initialized (S612). This means that the terminal PPP session timer driving program stored in the program memory 502 is stored in the data storage unit 504. Initializing the IP to 0 and initializing the buffers used in the PPP session to store the microprocessor 510 and the mode state so that the mobile communication terminal 500 switches from the idle state to the idle state in which the PPP session is not connected internally. In connection with the unit 506 or the like.

If the PPP session in the mobile communication terminal 500 is released and initialized and then attempts packet service again (S614), the PPP session in the mobile communication terminal 500 is already released and initialized, so the mobile communication terminal 500 S616 is a step in which a packet data call is directly connected to the mobile communication terminal 102 without having to terminate and initialize the PPP session in the mobile communication terminal 102 in order to reconnect the wireless data service. It is passed. That is, the process of releasing and initializing the PPP session in the mobile communication terminal 500 is performed in the mobile communication terminal 500 when the packet service is reconnected, thereby shortening the process of connecting the packet data call.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, if the PPP inactivity timer expires after the terminal enters the dormant state in the wireless data service, the PPP session still remains inside the mobile communication terminal so that the mobile communication is separately performed for reconnection of the wireless data service. The existing packet service problem, which has to go through the process of terminating and initializing the PPP session in the terminal, is activated by the terminal PPP session timer in the mobile terminal itself. By releasing and initializing the internal PPP session, the PPP session initialization process can be shortened at the time of reconnection to continue the packet service, so that the connection process for continuing the packet service can be smoothly connected and the connection time can be shortened.

Claims (16)

In the case of using a packet service, a mobile communication terminal having a terminal point-to-point protocol (PPP) session timer function, A program memory for storing a terminal PPP session timer driver program having a function of releasing and initializing a PPP session in the mobile communication terminal; A data storage unit serving as a data buffer when the mobile communication terminal operates, and storing PPP session procedure related information and IP information connected to a wired / wireless communication network providing the packet service when using the packet service; A mode state storage unit for storing a mode according to one of an active state and a dormant state of the mobile communication terminal as a state flag; And A microprocessor controlling an operation of the mobile communication terminal with reference to the state flag stored in the mode state storage unit and controlling a function of executing the terminal PPP session timer driving program; A mobile communication terminal having a terminal PPP session timer function comprising a. The method of claim 1, When the terminal PPP session timer driving program and the microprocessor start the terminal PPP session timer when the mobile communication terminal enters the idle state during the packet service execution and the terminal PPP session timer expires (Expired) A mobile communication terminal having a terminal PPP session timer function, which performs a function of releasing and initializing a PPP session in the mobile communication terminal. The method of claim 1, And a terminal PPP session timer operated by the terminal PPP session timer driver program can arbitrarily adjust a time until the terminal PPP session timer expires after the terminal PPP session timer is started. The method of claim 3, wherein The terminal PPP session timer is a time until the expiration after the terminal PPP session timer is started is equal to or shorter than the time until the expiration after the start of the PPP inactivity timer set by the wired or wireless communication network providing the packet service. A mobile communication terminal having a terminal PPP session timer function. The method of claim 1, The terminal PPP session timer operating by the terminal PPP session timer driving program has a terminal PPP session timer function, characterized in that the time from the start of the terminal PPP session timer to expiration is 10 minutes. The method of claim 1, The mobile communication terminal includes a cellular phone, a PCS phone, a personal digital assistant (PDA), a global system for mobile (GSM) phone, a wideband CDMA (W-CDMA) phone, a CDMA-2000 phone, and a mobile broadband (MBS). System) A mobile communication terminal having a terminal PPP session timer function comprising a phone. The method of claim 1, The mobile communication terminal may be a mobile communication terminal including at least one of a wireless application protocol (WAP) browser or a mobile explorer (ME) browser, an I-mode browser, or a binary runtime environment for wireless (BREW) browser. A mobile communication terminal having a terminal PPP session timer function. A method of connecting a packet data call using a terminal PPP session timer in a mobile communication terminal supporting a packet service, (a) initiating a count of the terminal PPP session timer when the mobile communication terminal enters a Dormant state while executing the packet service; (b) expiring the terminal PPP session timer when a preset time set in the terminal PPP session timer arrives; (c) releasing and initializing the PPP session remaining in the mobile communication terminal; And (d) connecting a packet data call between the mobile communication terminal and a wired or wireless communication network providing the packet service; Method for connecting a packet data call using a terminal PPP session timer comprising a. The method of claim 8, wherein in step (b), The predetermined time may be arbitrarily adjusted by a user of the mobile communication terminal. The method of connecting a packet data call using a terminal PPP session timer. The method of claim 9, The preset time is connected to the packet data call using a terminal PPP session timer, characterized in that the terminal PPP session timer, characterized in that less than or equal to the time until the PPP inactivity timer set in the wired / wireless communication network providing the packet service starts and expires. How to. The method of claim 8, The predetermined time is 10 minutes method for connecting a packet data call using the terminal PPP session timer. The method of claim 8, wherein in step (d), The packet data call is connected after the PPP inactivity timer set by the wire / wireless communication network providing the packet service expires and the PPP session in the wire / wireless communication network providing the packet service is released. Method for connecting a packet data call using a terminal PPP session timer. The method of claim 8, The mobile communication terminal includes: a program memory for storing a terminal PPP session timer driving program having a function of releasing and initializing a PPP session in the mobile communication terminal; A data storage unit serving as a data buffer when the mobile communication terminal operates, and storing PPP session procedure related information and IP information connected to a wired / wireless communication network providing the packet service when using the packet service; A mode state storage unit for storing a mode according to any one of an active state or an idle state of the mobile communication terminal as a state flag; And a microprocessor controlling an operation of the mobile communication terminal with reference to the state flag stored in the mode state storage unit, and controlling a function of executing the terminal PPP session timer driving program. A method of connecting a packet data call using a PPP session timer. The method of claim 8, The mobile communication terminal connects a packet data call using a terminal PPP session timer, which includes a cellular phone, a PCS phone, a personal digital assistant, a GSM phone, a W-CDMA phone, a CDMA-2000 phone, and an MBS phone. How to. The method of claim 8, The mobile communication terminal is a method of connecting a packet data call using a terminal PPP session timer, characterized in that the mobile communication terminal including any one or more of the WAP browser, ME browser, I-mode browser or BREW browser. A method of releasing and initializing a PPP session remaining in a mobile communication terminal using a terminal PPP session timer in a mobile communication terminal supporting a packet service, (a) initiating a count of the terminal PPP session timer when the mobile communication terminal enters a Dormant state while executing the packet service; (b) expiring the terminal PPP session timer when a preset time arrives; And (c) releasing and initializing the PPP session remaining in the mobile communication terminal; A method of releasing and initializing a PPP session remaining in a mobile communication terminal using a terminal PPP session timer comprising a.

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