KR20050001957A - Apparatus for transmitting/receiving of wireless data and method for the same - Google Patents

Abstract

PURPOSE: A device for transceiving wireless data and a method therefor are provided to transmit data without using a TCP/IP/PPP in a wireless network section, while minimizing a protocol overhead without TCP/IP/PPP headers, thereby reducing an access time without PPP/TCP setups and effectively transmitting the data at low cost. CONSTITUTION: A mobile communication network system(200) supplies a wireless access function between an MT(Mobile Terminal)(110) and a CP/SP(Contents Provider/Service Provider) server(140). An MIDAS(Mobile Instant Data Service) unit(230) controls a transceiving of MIDAS data(without TCP/IP/PPP headers) while setting a bidirectional call between the MT(110) and the CP/SP server(140). An IP network(or dedicated line)(130) is connected between the MIDAS unit(230) and the CP/SP server(140).

Description

Apparatus for transmitting / receiving of wireless data and method for the same

The present invention relates to a wireless data transmission and reception apparatus and a method thereof, and more particularly, to a wireless data transmission and reception apparatus and method for transmitting and receiving data in real time / two-way using a voice network.

The field of wireless communications has many applications, including wireless telephones, paging, wireless local loops, and satellite communications systems. In particular, as mobile communication services are widely spread, almost all citizens are provided with at least one mobile communication service. Such mobile communication services are being expanded to use basic services such as voice calls and text / voice messages, wireless Internet services, and contents for mobile communication terminals.

At this time, IS-95A Code Division Multiple Access (CDMA), which is an international standard, supports low-speed data services up to 14.4 Kbps, and is part of the IS-95A CDMA system modified to maintain high compatibility while maintaining compatibility with the IS-95A. IS-95B, which wants to provide data service, supports medium data rate (MDR) service such as 64Kbps.

As a result, it is possible to provide almost the same level of Internet service as that of a wired Internet service, and about 144 Kbps is possible in IS-95C or CDMA2000 1x, which is a synchronous 2.5G mobile communication system.

Conventionally, in order to efficiently perform one-to-one data (text, etc.) communication between terminals, a packet method using a TCP / IP / PPP method is used. That is, a channel session is established between two terminals by Point-to-Point Protocol (PPP) and Transmission Control Protocol / Internet Protocol (TCP / IP) or User Datagram Protocol (UDP), and packetized data is transmitted. will be.

This packet data service is performed by allocating an IP address (Static or Dynamic IP Address) to the mobile communication terminal, establishing a PPP and TCP connection between two terminals that want to transmit and receive data, and then exchanging packets.

Such TCP / IP and UDP protocols exist for transmitting packetized traffic over a packet switched network such that information arrives at its intended destination. Among them, IP (Internet Protocol) divides a message into packets, routes the packet from the transmitter to the destination, and reassembles the packet into the original message at the destination. At this point, the IP requires that each data packet identify the host and destination computer identically by initiating an IP header containing the source and destination address fields. And, published in RFC 793 (September 1981), TCP is reliable for the transfer of data from one application to another. In other words, TCP / IP is the basic communication protocol of the Internet. When a user sets up his or her computer to access the Internet, the TCP / IP program is installed, and thus messages with other computer users who are also using the same TCP / IP protocol. You can exchange information or get information. The TCP / IP is a program composed of two layers. The upper layer, TCP, is responsible for dividing messages or files into smaller packets for transmission over the Internet and for reassembling received packets into original messages. The lower layer, IP, processes the address portion of each packet, allowing packets to reach their destination accurately. Each gateway on the network checks the address of the message to know where to forward the message. If a message is divided into packets, each packet can be delivered through a different path, and they are reassembled at their final destination.

UDP is a simpler protocol that can be used when TCP's reliability mechanism is not needed.

Figure 1 (a) shows a block diagram of a system for data communication based on a conventional mobile communication network.

Referring to FIG. 1A, a mobile terminal (MT) 110 is in a range of an arbitrary base transceiver station (BTS) 121 in a mobile communication network, and a packet is transmitted from the mobile terminal 110. The converted data information is transmitted to the mobile switching center (MSC) 123 via the base station 121 and the base station controller (BSC) 122 controlling the same, and is transmitted from the mobile switching center 123. The packetized data information is transmitted to the mobile terminal 110 via the base station and the base station controllers 122 and 121.

The base station 121 performs wireless communication with the mobile terminal 110 and communicates with the base station controller 122 by wire, and thus the base station 121 performs a wired / wireless conversion function.

The base station controller 122 controls and manages one or more base stations 121, and performs traffic, signaling, mobility management, and mobile terminal 110 management related to call processing. The base station controller 122 may be voice and / or according to any of several known protocols including, for example, E1, T1, Asynchronous Transfer Mode (ATM), IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. It is connected to the base station 121 for the transmission of data packets. That is, the base station controller 122 connects the base station 121 to the mobile switching center 123 to adjust the connection between the base stations 121 and provides a signal processing function for communication between the base station 121 and the mobile switching center 123. do.

The mobile switching center 123 exchanges data between any mobile terminal through the base station controller 122. That is, the mobile switching center 123 processes a mobile communication subscriber call, accesses a base station controller 122, performs a call setup and release function of the mobile terminal 110, and performs various functions related to call processing and additional service. Perform.

At this time, the mobile terminal 110 is assigned a unique account or dynamic IP address, and interworking function (IWF) via the mobile switching center 123 for packet data communication based on IS-95A / B. 124 or a Packet Data Serving Node (PDSN) 125 via a base station controller 122 for packet data communication on a CDMA2000 basis. The network interworking unit 124 is connected to the Internet network 130 and performs TCP / IP packet data transmission / reception based on the IS-95A / B with the mobile terminal 110. That is, the IWF 124 is a system for providing data services in a CDMA network, and is installed between the mobile switching center 123 and the Internet network 130 to have a data communication matching function for additional data services.

The PDSN 125 connects the mobile terminal to a Packet Data Gateway Node (PDGN) 126 when the CDMA2000 subscriber station wants packet data communication, and the PDGN 126 receives the packet data received from the PDSN 125. Send it to the Internet. That is, the PDSN 125 transmits incoming / outgoing packets for the packet data of the CDMA2000 subscriber station 110 to an appropriate path and performs an end role of setting and managing a connection layer protocol of the mobile station 110.

For example, if it is a packet-based transmission such as a data call designated for the Internet, the base station controller 123 will route the packet data to the PDSN 125 to transmit the packet data to the Internet network 130. On the contrary, the Internet network 130 receiving the packet data from the server providing the information transmits the packet data to the PDSN 125 via the PDGN 126, and the PDSN 125 routes the packet data to the base station controller 122. do.

FIG. 1 (b) shows a protocol stack for implementing packet data communication based on a conventional mobile communication network.

Referring to FIG. 1B, the mobile terminal 110 includes an IS-95A / B / C protocol layer (that is, a physical layer), a RLP (Radio Link Protocol) layer (that is, a data link layer), and a PPP layer. It consists of an IP layer, a TCP / UDP layer and an application layer.

The base station 121 and the base station controller 122 implement the protocols of the physical layer (IS-95A / B / C) and the data link layer (RLP), and enable the IWF / PDSN (124, 125) to enable data communication. The PPP layer and the IP layer are also implemented.

That is, the information exchanged between the mobile terminal and the Internet based on the mobile communication network is processed into discrete packets known as data packets, data frames, and simply frames. To increase the likelihood of successfully sending frames while transmitting data, use the Radio Link Protocol (RLP), which tracks successfully transmitted frames and performs retransmissions if the frames are not successfully transmitted.

That is, for packet data communication, first, the mobile terminal 110 establishes an RLP session with the mobile communication network systems BTS and BSC and establishes an IWF / PDSN and a PPP session. After that, a TCP session is connected and data is packetized by the TCP / IP protocol, data is packetized by the UDP protocol, and transmitted to the Internet, or transmitted to the mobile communication network connected to the other terminal.

In this case, when packetizing data by applying a corresponding protocol in each layer, the packet data is divided into a header part which records information related to data contained in the data part and the data part. That is, each time data is packetized in each layer, a PPP header, an IP header, and a TCP header are sequentially added to the actual data.

When the mobile terminal 110 transmits the packetized data based on the TCP / IP / PPP, first, after assigning the traffic channel, the RLP is set up, the PPP and TCP are set up, and the actual data is transmitted. . The time from the traffic channel assignment to the TCP setup is the access time.

Therefore, the packet data transmission using the TCP / IP / PPP protocol described above causes a problem that the connection time is delayed due to the time for setting up the PPP and TCP. In addition, packet data transmission using the TCP / IP / PPP protocol has a problem in that a bidirectional call connection cannot be made in a PPP connection.

That is, a call cannot be established from the server such as CP / SP to the terminal. This causes a slower connection time between the mobile terminal and the CP / SP server. For example, when wireless card payment or character service is used as a mobile terminal, the server cannot send a call from the corresponding server to the mobile terminal, so the server first sends a message inducing the mobile terminal to set up the call. Then, since the mobile terminal normally establishes a call to send and receive information normally, the access time becomes long.

As described above, in the conventional wireless communication environment, the packet data transmission method using the TCP / IP / PPP protocol increases the initial connection time between the mobile terminal and the CP / SP server due to the PPP and TCP setup time, and in particular, the service user in the CP / SP server. Since a call cannot be set up by a mobile terminal, the querying process for inducing the mobile terminal to set up a call is complicated, making it difficult and difficult to obtain information from the mobile terminal.

On the other hand, nowadays, home appliances are remotely controlled from the outside, or electric or gas companies may remotely read home or building electricity and gas usage, and remotely monitor the security status of a specific house or building. Sometimes. Most of this is done using the Short Message Service (SMS). The short service is a service that delivers a limited length text message from the Internet to a mobile terminal or from a mobile terminal to another mobile terminal using a data burst message on the IS-95A.

However, the short service method described above can transmit only about 100 bytes of information at a time because of the property of this method, and since the store and forward is performed in the message center for short service, it is impossible to transmit information in real time. There is a problem that is difficult to convey information. Therefore, in order to overcome this limitation, there is also a method of splitting transmission into multiple short messages.

In this way, however, it is difficult to provide multimedia information such as music, pictures, and videos, and it is difficult to continuously and real-time data communication.

The present invention is to solve the above problems, an object of the present invention when transmitting and receiving a small amount of data between the mobile terminal and the CP / SP server, a wireless data transmission and reception device that can quickly exchange data in real-time and bi-directional communication And it provides a method.

Another object of the present invention is a mobile terminal and a CP / SP server by allowing data to be exchanged with each other without using a TCP / IP / PPP protocol based on a voice network in a small data transfer method corresponding to several hundred bytes to several Kbytes. The present invention provides a wireless data transmission / reception apparatus and a method for shortening the connection time therebetween.

It is still another object of the present invention to establish a bidirectional call between a mobile terminal and a CP / SP server by a mobile identification number (MIN) scheme instead of an IP address, thereby enabling wireless transmission of data between the mobile terminal and the CP / SP server in real time. An apparatus for transmitting and receiving data and a method thereof are provided.

1 (a) is a block diagram of a system for data communication based on a conventional mobile communication network

Figure 1 (b) is a diagram showing a protocol stack for implementing data communication using the TCP / IP / PPP protocol based on a conventional mobile communication network

2 (a) is a block diagram of a system for bidirectional data communication based on a mobile communication network according to the present invention

Figure 2 (b) is a diagram showing a protocol stack for implementing data communication without using the TCP / IP / PPP protocol in the wireless data transmission and reception apparatus according to the present invention

3 is a flowchart illustrating a process of setting up a call and transmitting data from a CP / SP server of a wireless data transceiver according to the present invention to a mobile terminal of a service subscriber.

4 is a flowchart illustrating a process of setting up a call to a CP / SP server and transmitting data from a mobile terminal of a service subscriber of a wireless data transceiver according to the present invention.

5A to 5C are diagrams showing examples of applying the prior art and the present invention in connection with a message service.

6A to 6C are diagrams showing examples of applying the prior art and the present invention with respect to a character / melody service;

7 is a diagram for comparing the access time and data amount of the present invention and CDMA2000;

Explanation of symbols for main parts of the drawings

110: mobile terminal 130: Internet network

140: CP / SP server 200: mobile communication network

201: base station 202: base station controller

203: Mobile switching center 204: Gateway switching center (IGS)

205: IWF 206: PDSN

207: PDGN 230: MIDAS unit

In accordance with another aspect of the present invention, there is provided a wireless data transmission / reception apparatus comprising: a mobile communication network system including a base station, a base station controller, a mobile switching center, and a gateway switching center to provide a wireless access function between the mobile terminal and a CP / SP server; And a mobile instant data service (MIDAS) unit for controlling two-way call setup between a mobile terminal and a CP / SP server and transmission / reception of multimedia data using a TCP / IP / PPP protocol using the mobile communication network system. It is characterized by.

The wireless data transmitted from the mobile terminal to the base station after the call is established between the mobile terminal and the CP / SP server and the wireless data transmitted from the base station to the mobile terminal are not packetized data in the TCP / IP / PPP protocol. That is, data without a TCP / IP / PPP header. This is possible because the present invention transmits and receives data using an IS-95A / B-based voice network.

Therefore, hereinafter, data that does not use the protocol scheme to distinguish packet data of the conventional TCP / IP / PPP protocol scheme and data not using the TCP / IP / PPP protocol scheme of the present invention, namely, In other words, data without the TCP / IP / PPP header is called MIDAS data.

Here, the term "MIDAS data" may vary depending on the intention or custom of a person skilled in the art and will not be limited to the examples given above.

Preferably, the mobile instant data service unit sets the specific field of the No.7 signaling message when the call request is received by using the identification number of the mobile terminal to be accessed from a specific CP / SP server as the called number and transmits it to the mobile communication network system. The mobile communication network system sets a service option that can be distinguished from a voice call when paging the mobile terminal when a specific field of the No. 7 signal message is set.

Preferably, the mobile terminal sends a specific message for checking whether data communication is possible through a traffic channel assigned to an ongoing call after accepting a call connection to the mobile instant data service unit, and the mobile instant data service unit sends a response message thereto. Sending to the mobile terminal is characterized in that to complete the call connection between the CP / SP server and a specific mobile terminal.

Preferably, after the call connection between the mobile terminal and the CP / SP server is completed, the mobile instant data service unit transmits TCP / IP based packet data from the TCP / IP based packet data when TCP / IP based multimedia packet data is transmitted from the CP / SP server. After removing the / IP header, it transmits to the corresponding mobile terminal through the traffic channel assigned to the call.

Preferably, the mobile terminal sets an identification number of a CP / SP server to be connected as a called number and sets a service option for distinguishing it from a voice call, and transmits the service option to the mobile communication network system. Set a specific message of No.7 signaling message according to the option and transmit it to the mobile instant data service unit, and the mobile instant data service unit notifies the corresponding CP / SP server that the mobile terminal attempts to connect to the mobile communication network system. It is characterized by setting up a call between the mobile terminal and the CP / SP server through.

Preferably, the mobile instant data service unit sends a specific message for checking whether data communication is possible through a traffic channel assigned to an ongoing call after accepting a call connection, and the mobile terminal sends a response message to the mobile terminal. Sending to the data service unit is characterized in that the call connection between the CP / SP server and a specific mobile terminal is completed.

Preferably, when the call connection between the mobile terminal and the CP / SP server is completed, the mobile terminal transmits multimedia data without a TCP / IP / PPP header to the corresponding CP / SP server through the traffic channel assigned to the call. It is characterized by.

Preferably, the CP / SP server maintains a permanent session with the mobile instant data service unit as a TCP client at startup or initial interworking, and the mobile instant data service unit requests a TCP connection of the CP / SP server. It receives and receives the connection to the CP / SP server, characterized in that for mapping and storing the identification number value and the session ID value of the CP / SP server.

Preferably, an internet network including a dedicated line is connected between the mobile instant data service unit and the CP / SP server, and the data transmitted and received between the mobile instant data service unit and the CP / SP server are packet data using a TCP / IP protocol. It is characterized by.

Preferably, the mobile instant data service unit removes a TCP / IP header from the TCP / IP based packet data when the packetized data is transmitted from the CP / SP server through the Internet network to the mobile communication network system. When the data without the TCP / IP / PPP header is transmitted through the mobile terminal and the mobile communication network system, the packetized packet is transmitted through the Internet network to the CP / SP server.

Preferably, the mobile terminal is composed of an IS-95 based protocol layer, an RLP layer, and an application layer.

Preferably, data transmission between the wireless communication network system and the mobile instant data service unit is performed through a trunk, and signaling is performed based on No. 7.

In the wireless data transmission / reception method according to the present invention, a mobile communication network system including a base station, a base station controller, a mobile switching center, and a gateway switching center and a mobile instant data service unit are used to set up a call from a CP / SP server to a mobile terminal. The / SP server maintains a permanent session with the mobile instant data service unit as a TCP client at startup or initial interworking, and the mobile instant data service unit receives a TCP connection request from the CP / SP server and receives the corresponding CP / SP. An initialization step of mapping and storing an identification number value and a session ID value of a corresponding CP / SP server while connecting to the SP server; When a call request is made using the identification number of the mobile terminal to be accessed from the CP / SP server as a called number, the mobile instant data service unit sets a specific field of a No.7 signaling message and transmits it to the mobile communication network system. In a communication network system, when a specific field of the No.7 signaling message is set, a service connection that can be distinguished from a voice call is set when paging a corresponding mobile terminal, and then a call connection is established from the CP / SP server to a specific mobile terminal. Establishing a call connection; Synchronizing with the mobile terminal after establishing a call connection in the step, the mobile instant data service unit exchanges a specific message for checking whether data communication is possible through the traffic channel assigned to the call and a corresponding response message with the mobile terminal; When the synchronization is performed in the step, the mobile instant data service unit receives the TCP / IP-based multimedia packet data transmitted from the CP / SP server, removes the TCP / IP header, and then transfers the mobile terminal through the traffic channel assigned to the call. Or receiving data without a TCP / IP / PPP header from the mobile terminal through a traffic channel assigned to the call and packetizing the data in a TCP / IP manner to the CP / SP server; And when the call release request is input from the CP / SP server, releasing the call with the mobile terminal.

In the wireless data transmission / reception method according to the present invention, a mobile communication network system including a base station, a base station controller, a mobile switching center, and a gateway switching center, and a mobile instant data service unit are used to set up a call from a mobile terminal to a CP / SP server. The / SP server maintains a permanent session with the mobile instant data service unit as a TCP client at startup or initial interworking, and the mobile instant data service unit receives a TCP connection request from the CP / SP server and receives the corresponding CP / SP. An initialization step of mapping and storing an identification number value and a session ID value of a corresponding CP / SP server while connecting to the SP server; A service number that can be distinguished from a voice call is set after the identification number of a CP / SP server that a specific mobile terminal wants to access is set as a called number and transmitted to the mobile communication network system. A specific field is set and transmitted to the mobile instant data service unit, and the mobile instant data service unit extracts a called number of a server from the transmitted No.7 signaling message and corresponds to a CP / SP server corresponding to the session ID mapped to the called number. A call connection establishment step of establishing a call between a corresponding mobile terminal and a CP / SP server through the mobile communication network system after notifying the mobile terminal of a call connection attempt; Synchronizing with the mobile terminal after establishing a call connection in the step, the mobile instant data service unit sends and receives a specific message and corresponding response message for checking whether data communication is possible through the traffic channel assigned to the call; When the synchronization is performed in the above step, the mobile instant data service unit receives data without a TCP / IP / PPP header from the mobile terminal through the traffic channel assigned to the call and packetizes the packet in the TCP / IP method to provide the CP / SP. Transmitting TCP / IP-based multimedia packet data transmitted from the CP / SP server, removing the TCP / IP header, and transmitting the received packet to the mobile terminal through the traffic channel assigned to the call; And when the call release request is input from the mobile terminal, releasing the call with the CP / SP server.

Preferably, the step of synchronizing is characterized in that the call request side sends a specific message for checking whether data communication is possible through the traffic channel allocated to the ongoing call, and then receives a response message.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Hereinafter, with reference to the accompanying drawings illustrating the configuration and operation of the embodiment of the present invention, the configuration and operation of the present invention shown in the drawings and described by it will be described as at least one embodiment, By the technical spirit of the present invention described above and its core configuration and operation is not limited.

2 (a) is a block diagram of a system for real-time / two-way data communication based on a mobile communication network according to the present invention, the mobile terminal 110, the mobile terminal 110 and the information / service provider (Contents) A mobile communication network system 200 providing a wireless access function between a provider / service provider (CP / SP) server 140, a bidirectional call setup between the mobile terminal and the CP / SP server 140 and MIDAS data (that is, TCP / SP). And a mobile instant data service (MIDAS) unit 230 that controls transmission and reception of data without an IP / PPP header. An IP network (or dedicated line) 130 is connected between the MIDAS unit 230 and the CP / SP server 140.

The mobile communication network system 200 is controlled by the base station 201, the base station controller 202, the mobile switching center 203, and the MIDAS unit 230, and the external CP / SP server 140 and the corresponding base station 201. ) Is configured as an Interconnection Gateway Switch (IGS) 204 for handling interworking calls.

In addition, an IWF 205 is connected between the mobile switching center 203 and the Internet network 130 for transmission of packet data using the TCP / IP / PPP protocol, or the base station controller 202 and the Internet network 130 are connected. The PDSN 206 and the PDGN 207 may be connected between each other. The IWF 205, PDSN 206, and PDGN 207 are provided only to assist a more general understanding of the present invention, and it is to be understood that the present invention may be practiced without these specific details. It will be self-evident to those who have it.

The mobile terminal 110, the base station 201 in the mobile communication network system 200, the base station controller (BSC) 202, the mobile switching center 203, the IGS (204) and the MIDAS unit 230, It will be understood by those skilled in the art that there may be a number.

In the present invention configured as described above, the mobile terminal 110 is within a range of an arbitrary base station 121 in the mobile communication network, and the CP / SP server 140 controls the specific mobile terminal 110 under the control of the MIDAS unit 230. Call may be established by the MIN scheme, not the IP address, and the call may be established by the mobile terminal 110 to the CP / SP server 140 under the control of the MIDAS unit 230.

That is, the present invention enables the bidirectional call setup between the mobile terminal 110 and the CP / SP server 140, that is, by enabling the call setup from the CP / SP server 140 to the specific mobile terminal 110, In addition to enabling real-time communication between the mobile terminal 110 and the CP / SP server 140, a complicated query process for inducing a call setup in the mobile terminal is not necessary, so that information acquisition in the mobile terminal is quick. It's easy.

In this case, as described above, the data transmitted from the mobile terminal 110 to the base station 201 and the data transmitted from the base station 201 to the mobile terminal 110 are MIDAS data without a TCP / IP / PPP header. Therefore, the MIDAS data transmitted and received between the mobile terminal 110 and the base station 201 do not use the TCP / IP / PPP protocol, which is the first time between the CP / SP server 140 and the mobile terminal 110. Connection time can be shortened by eliminating the need for PPP and TCP setup. In addition, since the TCP / IP / PPP header is not required, protocol overhead can be minimized, so that data communication can be performed at a low communication cost in a wireless section. In addition, the IP address resource problem can be solved by not using the TCP / IP / PPP protocol in a wireless network section in which network resources (ie, IP addresses) are limited.

In addition, since MIDAS data of the present invention does not have a TCP / IP / PPP header, the amount of data that can be transmitted per second in a wireless network is possible up to 14.4 Kbps based on IS-95A and up to 64 Kbps based on IS-95B. Therefore, the transmission of data such as MMS message and video as well as ringtone or character / melody is much more advantageous than the conventional CDMA method.

In this case, since the Internet network (or a dedicated line) 130 is connected between the MIDAS unit 230 and the CP / SP server 140, the data exchanged between the MIDAS unit 230 and the CP / SP server 140 is Data packetized by TCP / IP. That is, the data exchanged between the mobile terminal and the MIDAS unit 230 is MIDAS data without a TCP / IP / PPP header, and the data exchanged between the MIDAS unit 230 and the CP / SP server 140 is TCP / IP. Data packetized by the IP method.

As such, when a bi-directional call is established between the mobile terminal 110 and the CP / SP server 140, the data packetized by the CP / SP server 140 in the TCP / IP method is transferred through the Internet network 130 to the MIDAS unit. And the MIDAS unit 230 removes the TCP / IP header from the packetized data in the TCP / IP manner, and then the IGS 204, the mobile switching center 203, the base station controller 202, and It transmits to the mobile terminal 110 via the base station 201. On the contrary, the MIDAS data of the mobile terminal 110 is transmitted to the MIDAS unit 230 via the base station 201, the base station controller 202, the mobile switching center 203, and the IGS 204 to control the MIDAS unit. In operation 230, the transmitted MIDAS data is packetized again using the TCP / IP method and then transmitted to the CP / SP server 140 via the Internet network 130.

The base station 201 communicates wirelessly with the mobile terminal 110 and communicates with the base station controller 202 by wire, and thus the base station 201 performs a wired / wireless conversion function. The base station controller 202 connects the base station 201 to the mobile switching center 203 to coordinate the connection between the base stations 201 and serves as a signal processing function for communication between the base station 201 and the mobile switching center 203.

The mobile switching center 203 exchanges data between any mobile terminal through a base station controller 202. That is, the mobile switching center 203 processes the mobile communication subscriber call, accesses the base station controller 202, performs call setup and release functions of the mobile terminal 110, and performs various functions related to call processing and additional services. Perform.

The IGS 204 performs an efficient network interworking function with a PSTN or Thai Dong operator network, and performs an efficient billing settlement function with another operator network. In the present invention, the IGS 204 works in conjunction with the MIDAS unit 230. ) And setup / release of the call between the CP / SP server 140 and transmission / reception of user data. That is, the MIDAS unit 230 controls the IGS 204 to perform a connection function by making a call by making a call to transmit information from the CP / SP server 140 to the mobile terminal 110 of the service user. do.

2 (b) shows a protocol stack for implementing MIDAS data communication without a TCP / IP / PPP header based on a mobile communication network according to the present invention.

Referring to FIG. 2B, the mobile terminal 110 includes an IS-95A / B / C protocol layer (ie, a physical layer), a RLP (Radio Link Protocol) layer (ie, a data link layer), and an application from the bottom. It is organized in layers. That is, there is no PPP layer, IP layer, TCP / UDP layer. The RLP layer tracks successfully transmitted frames and performs retransmissions if the frames are not successfully transmitted to increase the likelihood of successfully transmitting frames while transmitting data.

In addition, protocols of the physical layer (IS-95A / B / C) and the data link layer (RLP) are also implemented in the base station 201 and the base station controller 202. In this case, a signal layer based on No. 7 is implemented between the base station controller 202 and the MIDAS unit 230. That is, the signal layer implements the CCS No. 7 protocol by applying Q.700 to 716 recommended by the ITU-T Blue Book.

At this time, the MIDAS unit 230 and the CP / SP server 140 includes a TCP / IP layer as in the prior art. That is, the CP / SP server 140 packetizes the data by the TCP / IP protocol and then transmits the packet to the MIDAS unit 230 via the Internet network 130, and the MIDAS unit 230 transmits the TCP data from the packet data. After removing the / IP header and transmits to the mobile terminal 110 via the mobile communication network system 200. On the contrary, MIDAS data without the TCP / IP / PPP header generated by the mobile terminal 110 is transmitted to the MIDAS unit 230 via the mobile communication network system 200, and the MIDAS unit 230 is connected to the MIDAS data. After packetizing by applying TCP / IP, the packet is transmitted to the CP / SP server 140 through the Internet network 130.

That is, only an RLP session is established between the mobile terminal 110 and the mobile communication network system 200 for MIDAS data communication. Accordingly, when transmitting the MIDAS data, the mobile terminal 110 first allocates a traffic channel and then immediately sets up the RLP and then transmits the MIDAS data. Therefore, in the present invention, the time from the traffic channel allocation to the RLP setup becomes the access time.

3 is a flowchart illustrating a process of setting up a call and transmitting data by a MIN system from a CP / SP server 140 of a wireless data transmission / reception apparatus according to the present invention to a mobile terminal 110 of a service subscriber. The description will be made using only parts related to (ie, mobile terminal, IGS, MIDAS unit, and CP / SP server). The remaining part can apply the known technique as it is.

First, the CP / SP server 140 maintains a state of establishing a permanent session with the MIDAS unit 230 as a TCP client during startup or initial interworking, and the MIDAS unit 230 Receives a TCP connection request of the CP / SP server 140 and connects to the CP / SP server 140 and stores a designated or assigned Mobile Identification Number (MIN) value and a Session ID value. Step 301). 3 shows an example of mapping 333-3333 of server MIN values to 123 of session IDs. The server MIN value is a number for the mobile terminal 110 to distinguish CP / SP servers, and a session ID is an identifier for the MIDAS unit 230 to distinguish the CP / SP servers.

The CP / SP server 140 transmits a call connection attempt message through the Internet network 130 using the MIN value of the mobile terminal 110 to be connected as a called number (for example, 123-4567). 230) (step 302). That is, the CP / SP server 140 attempts to connect a call including the MIN and the session ID of the mobile terminal to the MIDAS unit 230 to transmit multimedia information to the mobile terminal 110 of the designated subscriber. Send a message. Here, the call connection attempt message transmitted to the MIDAS unit 230 is data packetized by the TCP / IP method. Then, the MIDAS unit 230 removes the TCP / IP header from the packetized data in the TCP / IP method and transmits it to the IGS 204.

At this time, the MIDAS unit 230 sends an ISUP IAM message with a specific field set to the IGS 204 so that it is not a general voice call but a call connection request for MIDAS data transmission of the present invention (step 303).

The ISDN User Part (ISP) is a series of devices used for the purpose of establishing, monitoring, and releasing a voice or non-voice relay call based on a circuit-switching scheme between switching stations serving as ISDN end points. Define signal information flow procedures and functions. From the No.7 perspective, it is one of the level 4 user parts that use CCITT / ANSI network delivery services. The IAM (Initial Address Message) is a forward message for initiating outgoing line occupancy, transmitting a call processing path and a number or other information necessary for setting a path.

The IGS 204 proceeds with the call connection procedure in the same manner as the general voice call procedure (step 304). At this time, the IGS 204 inquires the position of the mobile terminal 110 by the home location registration device (HLR, not shown), and then requests a call setup to the corresponding mobile switching center (203). However, when a specific field of an IAM message is set, the mobile switching center 203 distinguishes from a general voice call using a specific service option when connecting and paging internal resources, and connects an RLP stack instead of voice coding to paging. Start).

When paging is started in step 304, the IGS 204 sends an ISUP ACM (Address Complete Message) to the MIDAS unit 230 in the same manner as in a normal voice call connection (step 305). The ACM is a message indicating that all of the address information necessary for call setup has been received by the called party.

At this time, when the mobile terminal 110 detects a call connection attempt and makes a call connection, the mobile communication network system 200 notifies the IGS 204 of a call accept response (Call Accept) in the same procedure as the voice call (step 306). .

The IGS 204 informs the MIDAS unit 230 that the mobile terminal 110 has accepted a call connection attempt to the ISUP ANM (step 307). The ANM (Answer Message) is a message that the called party informs the response of the call.

After accepting the call connection, the mobile terminal 110 sends a specific message to the MIDAS unit 230 to check whether data communication is possible through the assigned traffic channel (step 308). When the MIDAS unit 230 receives a specific message through the traffic channel assigned to the ongoing call, the MIDAS unit 230 sends a response message to the mobile terminal 110 (step 309).

In this case, the content of the specific message and the response message may include various additional information related to authentication, security, data channel protocol for traffic channel, etc. in addition to the synchronization message, and the additional information may be provided between the mobile terminal 110 and the MIDAS unit 230. It can be used as a means to perform functions such as authentication, configuration, and negotiation.

The MIDAS unit 230 then transmits a message informing 310 that the data communication is possible to the CP / SP server 140 (step 310). In this case, the MIDAS unit 230 packetizes the message through TCP / IP and then transfers the message to the CP / SP server 140 through the Internet network 130.

When call setup is completed by the above-described steps, the CP / SP server 140 transmits the prepared data to the mobile terminal 110 (step 311). In this case, the data transmitted to the mobile terminal 110 may be simply stored in a memory according to the setting state of the mobile terminal 110, or may be directly transmitted to an application program and immediately delivered to a user. In this case, if there is a response from the user, it is immediately transmitted to the CP / SP server 140 through the assigned traffic channel. As a result, bidirectional real-time data transmission and reception are performed between the mobile terminal 110 and the CP / SP server 140. At this time, the data transmitted and received are multimedia data such as music, pictures, videos such as telemetry, wireless payment, mobile ATM, telematics, logistics, ringtones, characters, MMS messages, and the like.

On the other hand, the information transmission is made to the mobile terminal 110, or CP / SP server 140 receiving a user response from the mobile terminal 110 requests the call release to the MIDAS unit 230. That is, when the CP / SP server 140 wants to release the call, the CP / SP server 140 sends a message informing the MIDAS unit 230 of the call release request (step 312). Then, the MIDAS unit 230 sends an ISUP REL (Release) message to the IGS 204 to request call release (step 313). The call release request message of step 312 is TCP / IP based packet data, and the ISUP REL message of step 313 is MIDAS data.

Then, the mobile communication network system 200 performs a call release procedure in the same manner as when a general voice call is released (step 314). When the MIDAS unit 230 receives the ISUP RCL message from the IGS 204, the MIDAS unit 230 cleans up resources allocated for the call (step 315). Then, the CP / SP server 140 sends a message indicating that the call release procedure is completed and completes all call release procedures (step 316).

Here, the data exchanged between the MIDAS unit 230 and the CP / SP server 140 (that is, data of steps 302, 310, 312, and 316) is data packetized by TCP / IP, and the Internet network 130. Sending and receiving is done through).

Step 301 is an initialization process, steps 302 to 307 are a call establishment process, steps 308 to 310 are a bearer synchronization process, step 311 is a data transmission process, and steps 312 to 316 are a call. This is called a connection release process.

4 is a flowchart illustrating a process of setting up a call from a mobile terminal 110 of a service subscriber to a CP / SP server 140 and transmitting data in contrast to FIG. 3 described above.

First, the CP / SP server 140 maintains a state of establishing a permanent session with the MIDAS unit 230 as a TCP client during startup or initial interworking, and the MIDAS unit 230. Receives a TCP connection request of the CP / SP server 140 and connects to the corresponding CP / SP server 140, the specified or assigned server Mobile Number (MIN) value and Session ID value Map and store (step 401). Similarly, in FIG. 4, an example of mapping and storing 333-3333 of server MIN values to 123 of session IDs is shown. The server MIN value is a number for the mobile terminal 110 to distinguish CP / SP servers, and a session ID is an identifier for the MIDAS unit 230 to distinguish the CP / SP servers.

For example, suppose that the CP / SP server 140 in charge of wireless payment is assigned 333-3333 as the server MIN value, and the server MIN value is mapped and stored in 123 of the session ID. When the mobile terminal 110 inputs 333-3333 for wireless payment, the MIDAS unit 230 is a session ID mapped to the 333-3333, that is, the CP / SP server 140 assigned to 123 and the mobile terminal ( 110).

That is, the mobile terminal 110 attempts to connect to the call in the same manner, except that the general voice call and the service option differ from the server MIN value of the CP / SP server 140 to which the mobile station 110 is called. In other words, the mobile terminal 110 sets a specific service option to distinguish it from a general voice call, and then sets only an RLP session with the mobile communication network system 200 to transmit data. In this case, when the base station controller 202 receives a call connection attempt of the specific service option for designating a connection for data transmission of the present invention, the signaling procedure proceeds in the same manner as in a normal voice call connection. A value for identifying a call for MIDAS data transmission is set in a specific field of the IAM, and a traffic processor (not shown) connects the RLP stack instead of voice coding.

When receiving the ISUP IAM corresponding to the call connection request from the IGS 204, the MIDAS unit 230 extracts the destination server MIN value of the ISUP IAM message and finds a Session ID value mapped to the server MIN value (step 403). ). Thereafter, the MIDAS unit 230 transmits a message indicating that the mobile terminal 110 attempts to access a call through a session already established to the CP / SP server 140 (step 404). Then, the CP / SP server 140 transmits a message in response to the call connection attempt to the MIDAS unit 230 (step 405). In this case, the CP / SP server 140 may perform an authentication function using the calling number of the mobile terminal 110.

The MIDAS unit 230 then sends an ISUP ACM message to the IGS 204 (step 406). This procedure may be omitted according to the No. 7 protocol of IGS 204. The MIDAS unit 230 then sends an ISUP ANM message to the IGS 204 (step 407).

The IGS 204 completes the call connection with the mobile terminal 110 in the same signaling method as in the normal voice call connection of the mobile communication network system 200 (step 408).

When the call connection is completed in step 408, the MIDAS unit 230 sends a specific message on the traffic channel so as to check whether the traffic channel allocated to the mobile terminal 110 is capable of transmitting and receiving data. 409).

At this time, when the mobile terminal 110 receives a specific message from the MIDAS unit 230, the mobile terminal 110 sends the response message to the MIDAS unit 230 using the assigned traffic channel (step 410). In addition to the synchronization message, the content of the specific message and the response message may include various additional information related to authentication, security, and data link protocol for a traffic channel, and such additional information may be provided between the mobile terminal 110 and the MIDAS unit 230. It can be used as a means to perform functions such as authentication, configuration, and negotiation.

Subsequently, the MIDAS unit 230 sends a specific message to the CP / SP server 140 to inform that data transmission and reception is possible (step 411).

When the above-described steps are completed, bi-directional real-time data transmission and reception between the mobile terminal 110 and the CP / SP server 140 is performed (step 412).

On the other hand, if the mobile terminal 110 wants to release the call, the mobile terminal 110 proceeds with the call release procedure in the same manner as a general voice call (step 413). Accordingly, upon receiving the ISUP REL message from the IGS 204, the MIDAS unit 230 enters a call release procedure and cleans up the allocated internal resources (step 414).

Then, the MIDAS unit 230 sends an ISUP RCL message corresponding to the response of the call release request to the IGS 204 (step 415). The IGS 204 then performs a call release procedure in the same manner as in normal voice call release (step 416).

At this time, the MIDAS unit 230 immediately after the procedure of step 415 transmits a message indicating the call release to the CP / SP server 140 (step 417). Then, the CP / SP server 140 transmits a response message indicating that the call release procedure is completed to the MIDAS unit 230, and the MIDAS unit 230 receives all the release procedures for the call by receiving this message. Complete (step 418).

Here, the data exchanged between the MIDAS unit 230 and the CP / SP server 140 (that is, data of steps 404, 405, 411, 417, and 418) are data packetized by the TCP / IP method, and the Internet network. Transmission and reception are made through the 130.

Step 401 is an initialization process, steps 402 to 408 are a call establishment process, steps 409 and 410 are a bearer synchronization process, step 412 is a data transmission process, and steps 413 to 418 are calls. This is called a connection release process.

Such a real-time / two-way wireless data transmission method of the present invention has a variety of applications. For example, credit card payments, remote meter reading, telematics, securities trading, logistics, security guards, ATMs, other satellite broadcasting supplementary services, TV viewership surveys, etc. It is not limited to the examples described above.

Only a few of the above examples are compared with the prior art.

First, in the case of electronic payment, credit card payment or ATM transaction using a mobile terminal, payment time was about 8 seconds due to PPP and TCP setup time of TCP / IP / PPP based packet data. It does not require PPP and TCP setup for connection, so it can be shortened to 3 ~ 4 seconds.

In the case of remote meter reading and security guard, the meter reading status or security status could not be known in real time when a request for a meter reading or a security status of electricity or gas was requested through a short service. That is, due to the characteristics of the short service, a response may come immediately, but the message can be received after a certain time (for example, one day) passes. Therefore, information could not be properly utilized when needed or in an emergency. On the contrary, in the case of the present invention, since a two-way call can be set up, there is an advantage in that the request status can be immediately responded in real time when a meter reading or security status is requested. This means that you can remotely check the meter or security status whenever and wherever you need it.

In addition, in the conventional case, due to the characteristics of the terminal service, only 100 bytes of messages can be transmitted at a time, and thus, when a large amount of data is sent, the cost is increased and the speed becomes slower. Unlimited continuous transmission of data not only speeds up transmission but also reduces communication costs.

In the case of telematics, since a conventional two-way call cannot be established, the connection from the center to the vehicle had to go through two steps. That is, first, the connection command is executed from the center to the vehicle through the short service, and the vehicle performs the connection and data transmission back to the center. In addition, since the short service is not real time, the data sent from the vehicle to the center could not be received at the center in real time. Therefore, in the related art, it is difficult to track a stolen vehicle or the like and to inform road information around the vehicle. However, in the present invention, since the data can be transmitted in real time and bidirectionally between the center and the vehicle, the state of the vehicle can be known in real time. Thus, in the case of stolen vehicles, it is easy to track and the necessary control can be done remotely at the center. In addition, the center may inform the service subscriber's vehicle of the road situation in real time, and instruct the vehicle to directly open the vehicle door when the vehicle door is locked in the state of starting. The above examples are one embodiment, and the present invention can be applied to all functions applied to telematics. In addition, in the logistics service, in the past, since real-time transmission is not possible, in order to inform the related information, such as the address and directions of the customer from the center, the terminal sends several short-term services or calls directly by phone. In order to know whether the corresponding terminal has checked, a problem may occur that must be waited for. In the present invention, since the bidirectional call setup and real-time transmission are possible, the center can immediately connect the call to the terminal to transmit related information at once, and can immediately know whether the corresponding terminal checks the information.

In addition, in the case of securities transactions, the real-time reception of the incoming call is not guaranteed, so it is difficult to provide a real-time alarm function for real-time information such as the current price of the company registered by the user. . In particular, a problem of radio resource occupancy may occur when waiting for a long time in the connected state. On the contrary, in the present invention, when a stock price of a specific company reaches a registered price due to free application of a real-time alarm function, the present invention may immediately sell or buy without a procedure for accessing a securities company. In addition, since the connection time is short, the release / connection function may be equipped automatically when waiting for a long time.

5A to 5C are diagrams showing examples of applying the prior art and the present invention to a message service. FIG. 5A shows a general short message service (SMS), in which the message type is text and the amount of data that can be sent at one time is very small, at most 100 bytes. Figure 5b is a general MMS message type is a picture, image, video, audio, text, etc., the amount of data that can be sent at a time can be from several Kbytes to several tens of Kbytes, but can not set up a two-way call, only a call from the terminal to the center can be set Therefore, a complicated query process is required to request the call from the terminal to the center, which causes a long time for access and download of the message. Figure 5c shows an example of a message transmission method according to the present invention, the message type or data amount is almost the same as MMS, but since the two-way call can be set up, the message transmission procedure is simplified and the time to download the message is shortened. Able to know.

6A to 6C are diagrams illustrating examples of applying the present invention to the character / melody service. FIG. 6A illustrates a typical character / melody service when a character is black and white or 4 grays and a melody is 1 poly. Since the amount of data in the short service is small, the data need to be sent to the terminal several times. have. Figure 6b is a typical character / melody service when the character is 256 color, 65 Kbyte color, the melody is 16 poly or 40 poly, for example, because the two-way call setup is not possible from the terminal to the center through the WAP push and callback from the center to the terminal Since the WAP access process is required, the access time and the time to download the corresponding service become long as in FIG. 5B. However, in the case of the present invention, it can be seen that the amount of data that can be sent at one time is from 14.4 Kbytes to 64 Kbytes per second, and bidirectional call setup is possible, so that access and download of the corresponding service are made within a few seconds.

FIG. 7 is a diagram for comparing access time and data amount during MIDAS data transmission and general CDMA2000-based TCP / IP / PPP packet data transmission according to the present invention. The present invention 1 is based on IS-95A (14.4 Kbyte). An example of transmitting MIDAS data is shown, and the present invention 2 shows an example of transmitting MIDAS data based on IS-95B (64 Kbytes). In Fig. 7, a represents the initial connection time of the present invention. When comparing the present invention 1,2 and CDMA2000 it can be seen that the access time is different in the wireless network. That is, in the present invention, since the PPP and TCP setup time are not necessary, the actual access time is sufficient as the traffic channel allocation and RLP setup time. However, in the case of CDMA2000, since the TCP / IP / PPP method packet data, the PPP at the traffic channel allocation and RLP setup time is required. Since the TCP setup time is included, the access time is longer than that of the present invention.

In addition, looking at the present invention 1 in Figure 7, it can be seen that in the case of remote meter reading, wireless payment, wireless ATM, telematics, logistics, ringtones and character services is much more advantageous than CDMA2000 in the transmission rate, the present invention 2 Remote meter reading, wireless payment, wireless ATM, telematics, logistics, ringtones and character services, as well as MMS messages and even 50 seconds of video can be seen to be much more advantageous than CDMA2000 in terms of transmission speed.

As described above, according to the wireless data transmission / reception apparatus and method thereof according to the present invention, by enabling bidirectional call setup between the mobile terminal and the CP / SP server, real time communication is possible between the mobile terminal and the CP / SP server. In addition, since the complicated query process for inducing the mobile terminal to set up a call is not required, information acquisition in the mobile terminal is quick and easy. That is, the present invention omits a query process for acquiring information in a wireless data environment, and can receive multimedia information such as voice, music, text, picture, and video, as well as receive predetermined information from a corresponding terminal without a separate operation. It can be easily checked, and if necessary, a response message can be directly written and transmitted by the terminal, thereby greatly improving the information retrieval process in a wireless communication environment.

In addition, by transmitting data without using the TCP / IP / PPP protocol in the wireless network section, the initial connection between the CP / SP server and the mobile terminal does not require PPP and TCP setup, thereby reducing the connection time. In addition, since TCP / IP / PPP headers are not required, protocol overhead can be minimized, thereby enabling inexpensive and efficient data communication. In addition, the data transmitted in the wireless network section with the limited IP address does not use the TCP / IP / PPP protocol, and establishes a bidirectional call between the CP / SP server and the mobile terminal using the MIN scheme instead of the IP address. Address resource problems can be solved.

In this case, since the data transmitted in the wireless network does not have a TCP / IP / PPP header, the amount of data that can be transmitted per second is possible up to 14.4 Kbps based on IS-95A, and up to 64 Kbps based on IS-95B. It is possible to quickly and easily exchange multimedia information such as music, pictures, and videos between the mobile terminal and the CP / SP server.

In addition, since the present invention is a circuit mode, a quality of service (QoS) is guaranteed.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (20)

In the wireless data transmission and reception device between the mobile terminal and the CP / SP server, A mobile communication network system having a base station, a base station controller, a mobile switching center, and a gateway switching center to provide a wireless access function between the mobile terminal and a CP / SP server; And And a mobile instant data service unit configured to control bi-directional call setup between a mobile terminal and a CP / SP server and transmission / reception of multimedia data without a specific header using the mobile communication network system. The method of claim 1, wherein the mobile instant data service unit When a call request is made using an identification number of a mobile terminal to be accessed from a specific CP / SP server as a called number, a specific field of No. 7 signaling message is set and transmitted to the mobile communication network system. And the mobile communication network system sets a service option that can be distinguished from a voice call when paging the mobile terminal if a specific field of the No. 7 signal message is set. The method of claim 2, After accepting a call connection, the mobile terminal sends a specific message to the mobile instant data service unit to check whether data communication is possible through a traffic channel assigned to an ongoing call, and the mobile instant data service unit sends a response message to the mobile terminal. Transmitting and completing a call connection between the CP / SP server and a specific mobile terminal. 4. The mobile instant data service unit of claim 3, wherein the mobile instant data service unit After the call connection between the mobile terminal and the CP / SP server is completed, if TCP / IP-based multimedia packet data is transmitted from the CP / SP server, the TCP / IP header is removed from the TCP / IP-based packet data. Wireless data transmitting and receiving device characterized in that for transmitting to the corresponding mobile terminal through the assigned traffic channel. The method of claim 1, The mobile terminal sets an identification number of a CP / SP server to be connected as a called number and sets a service option for distinguishing it from a voice call and transmits it to the mobile communication network system. The mobile communication network system sets a specific message of No. 7 signaling message according to the transmitted service option and transmits it to the mobile instant data service unit. The mobile instant data service unit notifies the CP / SP server that the mobile terminal attempts to access a call, and then establishes a call between the mobile terminal and the CP / SP server through the mobile communication network system. . The method of claim 1, The mobile instant data service unit sends a specific message to the mobile terminal to check whether data communication is possible through a traffic channel assigned to an ongoing call after accepting a call connection, and the mobile terminal sends a response message to the mobile instant data service unit. Transmitting and completing a call connection between the CP / SP server and a specific mobile terminal. The method of claim 6, When the call connection between the mobile terminal and the CP / SP server is completed, the mobile terminal transmits multimedia data without a TCP / IP / PPP header to the corresponding CP / SP server through the traffic channel assigned to the call. Wireless data transceiver. The method according to claim 2 or 5, The CP / SP server maintains a permanent session with the mobile instant data service unit as a TCP client at startup or initial interworking, and the mobile instant data service unit receives a TCP connection request from the CP / SP server. Wireless data transmitting and receiving device characterized in that for mapping to the identification number value and the session ID value of the CP / SP server while connecting to the CP / SP server. The method of claim 1, And the gateway switching center performs setting, release and call transmission / reception of multimedia data between the mobile terminal and the CP / SP server under the control of the mobile instant data service unit. The method of claim 1, The multimedia data is a wireless data transmitting and receiving device, characterized in that at least one of the text, pictures, images, voice, music, video. The method of claim 1, An internet network including a dedicated line is connected between the mobile instant data service unit and the CP / SP server, and the data transmitted and received between the mobile instant data service unit and the CP / SP server are packet data using a TCP / IP protocol. Wireless data transceiver. The method of claim 11, wherein the mobile instant data service unit When the packetized data is transmitted from the CP / SP server through the Internet network in a TCP / IP manner, the TCP / IP header is removed from the TCP / IP-based packet data and transmitted to the mobile communication network system. When the data without the TCP / IP / PPP header is transmitted through the mobile terminal and the mobile communication network system, the wireless data transmission and reception device characterized in that the packetized by the TCP / IP method and transmitted to the CP / SP server via the Internet network . The method of claim 1, The mobile terminal is a wireless data transmission and reception device, characterized in that consisting of an IS-95 based protocol layer, RLP layer and application layer from the bottom. The method of claim 1, And a data transmission between the wireless communication network system and the mobile instant data service unit through a trunk, and signaling is based on No. 7. In the wireless data transmission and reception method between a mobile terminal and a CP / SP server using a mobile communication network system having a base station, a base station controller, a mobile switching center, and a gateway switching center and a mobile instant data service unit, The CP / SP server maintains a permanent session with the mobile instant data service unit as a TCP client at startup or initial interworking, and the mobile instant data service unit receives a TCP connection request from the CP / SP server. An initialization step of mapping and storing an identification number value and a session ID value of a corresponding CP / SP server while connecting to the CP / SP server; When a call request is made using the identification number of the mobile terminal to be accessed from the CP / SP server as a called number, the mobile instant data service unit sets a specific field of a No.7 signaling message and transmits it to the mobile communication network system. In a communication network system, when a specific field of the No.7 signaling message is set, a service connection that can be distinguished from a voice call is set when paging a corresponding mobile terminal, and then a call connection is established from the CP / SP server to a specific mobile terminal. Establishing a call connection; Synchronizing with the mobile terminal after establishing a call connection in the step, the mobile instant data service unit exchanges a specific message for checking whether data communication is possible through the traffic channel assigned to the call and a corresponding response message with the mobile terminal; When the synchronization is performed in the step, the mobile instant data service unit receives the TCP / IP-based multimedia packet data transmitted from the CP / SP server, removes the TCP / IP header, and then transfers the mobile terminal through the traffic channel assigned to the call. Transmitting the data without a TCP / IP / PPP header to the CP / SP server by receiving the data without a TCP / IP / PPP header through the traffic channel assigned to the call in a TCP / IP manner; And And releasing a call with the mobile terminal when a call release request is input from the CP / SP server. A wireless data transmission / reception method between a mobile terminal and a CP / SP server using a mobile communication network system having a base station, a base station controller, a mobile switching center, and a gateway switching center and a mobile instant data service unit, The CP / SP server maintains a permanent session with the mobile instant data service unit as a TCP client at startup or initial interworking, and the mobile instant data service unit receives a TCP connection request from the CP / SP server. An initialization step of mapping and storing an identification number value and a session ID value of a corresponding CP / SP server while connecting to the CP / SP server; A service number that can be distinguished from a voice call is set after the identification number of a CP / SP server that a specific mobile terminal wants to access is set as a called number and transmitted to the mobile communication network system. A specific field is set and transmitted to the mobile instant data service unit, and the mobile instant data service unit extracts a called number of a server from the transmitted No.7 signaling message and corresponds to a CP / SP server corresponding to the session ID mapped to the called number. A call connection establishment step of establishing a call between a corresponding mobile terminal and a CP / SP server through the mobile communication network system after notifying the mobile terminal of a call connection attempt; Synchronizing with the mobile terminal after establishing a call connection in the step, the mobile instant data service unit exchanges a specific message for checking whether data communication is possible through the traffic channel assigned to the call and a corresponding response message with the mobile terminal; When the synchronization is performed in the above step, the mobile instant data service unit receives data without a TCP / IP / PPP header from the mobile terminal through a traffic channel assigned to the call and packetizes the packet in the TCP / IP method to provide the CP / SP. Transmitting TCP / IP-based multimedia packet data transmitted from the CP / SP server, removing the TCP / IP header, and transmitting the received packet to the mobile terminal through the traffic channel assigned to the call; And And when the call release request is input from the mobile terminal, releasing the call with the CP / SP server. 17. The method of claim 15 or 16, wherein the synchronizing step is And transmitting a specific message for checking whether data communication is possible through a traffic channel allocated to an ongoing call at the requesting party, and receiving a response message. The method of claim 14, The multimedia data is a wireless data transmission and reception method, characterized in that at least one of the text, pictures, images, voice, music, video. The method according to any one of claims 15 to 16, The mobile terminal is composed of an IS-95 based protocol layer, an RLP layer, and an application layer from below, and data transmission between the wireless communication network system and the mobile instant data service unit is performed through a trunk, and signaling is performed based on No.7. Wireless data transmission and reception method, characterized in that. The method according to any one of claims 15 to 16, The server identification number is a telephone number for distinguishing each CP / SP server in the mobile terminal, and the session ID is an identifier for distinguishing each CP / SP server in the mobile instant data service unit. Way.