US 6,549,543 B1Granted

Data communication system and data communication operating method

AssigneeLG Information & Communications, Ltd.

InventorSeung Mok Shin

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Abstract

A data communication system and data communication operating method capable of providing a asynchronous data communication service to a public switching telephone network, X.25 network, and Internet by extensively applying a packet assembler deassembler (PAD) function to an interworking function device provided in a code division multiple access (CDMA) type data communication system. If a certain mobile station requests the asynchronous data service, the data communication system analyzes the condition of terminating information inputted by a user of the mobile station, and selectively connects the mobile station to a public switching telephone network, X.25 network, and Internet according to the result of analysis.

Claims33

Dependent claims

An interworking function of a data communication, comprising:

an IS-99 protocol processing section configured to analyze the terminating information inputted by the user;
a packet assembler deassembler (PAD) processing section configured to receive the terminating information extracted by the IS-99 protocol processing section, and transmit to the mobile station a PAD service menu stored therein, or determine whether a terminating number included in the terminating information corresponds to a subscriber of a public switching telephone network, X.25 network, or Internet;
an X.25 protocol processing section to connect a communication path to the X.25 network while bypassing a modem of the interworking function device if the terminating number is determined by the PAD processing section to correspond to the subscriber of the X.25 network;
and
a point-to-point protocol (PPP) server to determine a packet data link between the mobile station and the Internet if the terminating number is determined by the PAD processing section to correspond to the Internet, wherein the PAD processing section analyzes the terminating number following the ATD command, and classifies a result of analysis into at least one of a case that no terminal number is inputted, a case that a terminating number stored in the PAD service menu is inputted, a case that a host number of the X.25 network is imputted, and a case that the terminating number which does not correspond to any of the above three cases is inputted, and wherein the data communication system characterized in that if a certain mobile station requests a data service, the data communication system analyzes the condition of terminating information inputted by a user of the mobile station, and selectively connects the mobile station to one of the public switched telephone network, the X.25 network, and Internet based on a result of the analysis, wherein if the result of the analysis indicates a connection to one of the X.25 network and the Internet, the data communication system by passes a modem of an interworking function device to connect the mobile station to the corresponding one of the X.25 network and the Internet.

2 more elements

A communication system for providing data communications service, comprising:

a mobile switching center, configured to receive terminating information from a mobile station;
an interworking function device coupled to the mobile switching center, and configured to analyze the terminating information to selectively connect the mobile station to one of a public switched telephone network, an X.25 network, and Internet according to the result of the analysis, wherein if a result of the analysis indicates a connection to one of the X.25 network and the Internet, the interworking function device bypasses a modern of the interworking function device to connect the mobile station to the corresponding one of the X.25 network and the Internet, wherein the interworking function device further comprises,
an IS-99 protocol processing section configured to analyze the terminating information inputted by the user;
a packet assembler/disassembler (PAD) processor configured to analyze the terminating information and connect the mobile station to one of the modern of the interworking function device and a protocol processing device according to a result of the analysis, the PAD processor to being further configured to receive the terminating information extracted by the IS-99 protocol processing section, and transmit to the mobile station a PAD service menu stored therein, and determine whether a terminating number included in the terminating information corresponds to a subscriber of a public switching telephone network, the X.25 network, or the Internet, and further configured to analyze the terminating number and classify a result of the analysis into one of a case that no terminal number is inputted, a case that a terminating number stored in the PAD service menu is inputted, a case that a host number of the X.25 network is inputted, and a case that the terminating number which does not correspond to any of the above three cases is inputted;
X.25 protocol processing section to connect a communication path to the X.25 network if the terminating number is determined by the PAD processor to correspond to the subscriber of the X.25 network;
and
a point-to-point protocol (PPP) server to determine a packet data link between the mobile station and the Internet if the terminating number is determined by the PAD processor to correspond to the Internet.

4 more elements

Dependencies are inferred from the claim text.

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Abstract

An interworking function of a data communication, comprising:

an IS-99 protocol processing section configured to analyze the terminating information inputted by the user;
a packet assembler deassembler (PAD) processing section configured to receive the terminating information extracted by the IS-99 protocol processing section, and transmit to the mobile station a PAD service menu stored therein, or determine whether a terminating number included in the terminating information corresponds to a subscriber of a public switching telephone network, X.25 network, or Internet;
an X.25 protocol processing section to connect a communication path to the X.25 network while bypassing a modem of the interworking function device if the terminating number is determined by the PAD processing section to correspond to the subscriber of the X.25 network;
and
a point-to-point protocol (PPP) server to determine a packet data link between the mobile station and the Internet if the terminating number is determined by the PAD processing section to correspond to the Internet, wherein the PAD processing section analyzes the terminating number following the ATD command, and classifies a result of analysis into at least one of a case that no terminal number is inputted, a case that a terminating number stored in the PAD service menu is inputted, a case that a host number of the X.25 network is imputted, and a case that the terminating number which does not correspond to any of the above three cases is inputted, and wherein the data communication system characterized in that if a certain mobile station requests a data service, the data communication system analyzes the condition of terminating information inputted by a user of the mobile station, and selectively connects the mobile station to one of the public switched telephone network, the X.25 network, and Internet based on a result of the analysis, wherein if the result of the analysis indicates a connection to one of the X.25 network and the Internet, the data communication system by passes a modem of an interworking function device to connect the mobile station to the corresponding one of the X.25 network and the Internet.

2 more elements