Wireless data transport method, and mobile terminal and interworking function device therefor

• US 6,519,458 B2
• Filed: 07/19/1999
• Issued: 02/11/2003
• Est. Priority Date: 10/29/1998
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Oh, Kang-hwan, Lee, Sang-seo
• Primary Examiner(s): Maung, Nay
• Assistant Examiner(s): PERSINO, RAYMOND B
• Application Number:
  US09/357,150
• Publication Number:
  US 20020068609A1
• Time in Patent Office: 1,303 Days
• Field of Search: 455/466, 455/433, 455/445, 455/436, 455/439, 455/560, 455/550, 370/475, 370/335, 370/342, 370/469, 370/328, 370/331, 370/352, 370/466, 370/398, 370/337, 370/467, 370/401, 375/222
• US Class Current: 455/445
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 80/06 Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless transmission control protocol/Internet protocol [TCP/IP] or user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04W 80/12 Application layer protocols, e.g. WAP [Wireless Application Protocol]
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

A wireless data transport method, and a mobile terminal and an interworking function (IWF) device therefor. In the wireless data transport method performed using a mobile terminal, an IWF device and a server, a dialing is performed in the mobile terminal using a predetermined command with an identifier including an IP (Internet Protocol) address, and then RLP (Radio Link Protocol) between the mobile terminal and the IWF device is synchronized to establish a circuit-switched data (CSD) channel according to the command. Then, PPP (Point-to-Point Protocol)/TCP (Transmission Control Protocol) is performed in the IWF device according to the identifier, and a network interface channel is then opened by an AT (ATtention) processing unit of the IWF device according to the IP address of the identifier. Therefore, the mobile terminal can be connected directly to a network interface which is an Internet connect port, using a CSD channel which is preferred by network service providers, not using a modem.

Claims

1. A wireless data transport method performed using a mobile terminal, an interworking function (IWF) device and a server, the method comprising the steps of:

(a) performing a dialing in the mobile terminal using a predetermined command with an identifier including an IP (Internet Protocol) address;

(b) synchronizing a RLP (Radio Link Protocol) between the mobile terminal and the IWF device to establish a circuit-switched data (CSD) channel, which uses neither a modem nor a public switched telephone network (PSTN), according to the predetermined command, so that data can be transmitted between the mobile terminal and the sever;

(c) performing a PPP (Point-to-Point Protocol) TCP (Transmission Control Protocol) in the IWF device according to the identifier; and

(d) opening a network interface channel by an AT (ATtention) processing unit of the IWF device according to the IP address of the identifier.

2. The method of claim 1, wherein the predetermined command is an ATtention Dial (ATD) command based on standard protocols of TIA/EIA IS-592.

3. The method of claim 1, wherein the step (a) comprises a step of performing dialing based on WAP (Wireless Application Protocol).

4. The method of claim 1, wherein the step (a) comprises a step of dialing the IP address of an Internet application based on WAP (Wireless Application Protocol).

5. The method of claim 1, wherein the step (b) of synchronizing the RLP is formed based on a code division multiple access (CDMA) system.

6. The method of claim 1, wherein the step (c) of performing the PPP/TCP comprises the sub-steps of:

(c1) identifying whether the input identifier is a telephone number or the IP address in the AT processing unit of the IWF device; and

(c2) performing the PPP/TCP in the IWF device according to the identifier if the CSD channel is used for a connection and the identifier is the IP address.

7. The method of claim 6, wherein in the step (d), a modem data channel is opened in the AT processing unit of the IWF device if the identifier is the telephone number, and the network interface channel is opened if the identifier is the IP address.

8. A wireless data transport method performed using a mobile terminal, an interworking function (IWF) device and a server, the method comprising the steps of:

(a) performing a dialing in the mobile terminal using a predetermined command with an identifier including an IP (Internet Protocol) address;

(b) synchronizing a RLP (Radio Link Protocol) between the mobile terminal and the IWF device to establish a circuit-switched data (CSD) channel according to the predetermined command, so that data can be transmitted between the mobile terminal and the server;

(c) performing a PPP (Point-to-Point Protocol)/TCP (Transmission Control Protocol) in the IWF device according to the identifier; and

(d) opening a network interface channel by an AT (ATtention) processing unit of the IWF device according to the IP address of the identifier,

wherein the method further comprises, before the step (b), a step (b-1) receiving information about an application to be used in the mobile terminal and about whether a channel to be selected for connection is the CSD channel or a packet-switched data (PSD) channel.

9. The method of claim 8, wherein in the step (a), the dialing is performed using an ATtention Dial (ATD) command with the IP address if the application for the mobile terminal is determined to be an Internet-related application and the selected channel is the CSD channel.

10. A mobile terminal for wireless data transport with a server through an interworking function (IWF) device, comprising:

an AT (ATtention dial command) processing unit for performing a dialing using a predetermined command with an identifier including an IP (Internet Protocol) address;

a data formatting unit for formatting data output from the AT processing unit into a circuit-switched data (CSD) format; and

an RLP (Radio Link Protocol) performing unit for performing RLP synchronization for a radio link between the mobile terminal and the IWF device to establish a CSD channel, which uses neither a modem nor a public switched telephone network (PSTN), so that data can be transmitted between the mobile terminal and the server.

11. The mobile terminal of claim 10, further comprising a WAP (Wireless Application Protocol) performing unit for inputting the identifier including the IP address.

12. The mobile terminal of claim 10, wherein the predetermined command is an ATtention Dial (ATD) command based on standard protocols of TIA/EIA IS-592.

13. A mobile terminal for wireless data transport with a server through an interworking function (IWF) device, comprising:

an AT (ATtention dial command) processing unit for performing a dialing using a predetermined command with an identifier including an IP (Internet Protocol) address;

a data formatting unit for formatting the data output from the AT processing unit into a packet-switched data (PSD) format; and

an RLP (Radio Link Protocol) performing unit for performing RLP synchronization for a radio link between the mobile terminal and the IWF device to establish a CSD channel, so that data can be directly transmitted between the mobile terminal and the server.

14. A mobile terminal for wireless data transport with a server through an interworking function (IWF) device, comprising:

an AT (ATtention dial command) processing unit for performing a dialing using an ATtention Dial (ATD) command with an identifier including an IP (Internet Protocol) address;

a data formatting unit for formatting data input from the AT processing unit into circuit-switched data (CSD) or packet-switched data (PSD) according to a selection of a user; and

a radio link protocol performing unit for performing an RLP synchronization for a radio link between the mobile terminal and the IWF device to establish a channel selected according to the ATD command, so that data can be transmitted between the mobile terminal and the server.

15. An interworking function (IWF) device for a wireless data transport with a network server, being connected to a mobile terminal, comprising:

an RLP (Radio Link Protocol) performing unit for performing synchronization with the mobile terminal for a radio link, to establish a wireless data channel, which uses neither a modern nor a public switched telephone network (PSTN), so that data can be transmitted between the mobile terminal and the server;

a data formatting unit for extracting dialing information from data of a circuit-switched data (CSD) format input through the RLP performing unit;

an ATtention Dial (ATD) processing unit for extracting an identifier including an IP (Internet Protocol) address from the dialing information; and

a network interface unit for connecting to a network server corresponding to the identifier.

16. The interworking function device of claim 15, wherein the dialing information is an ATtention Dial (ATD) command according to standard protocols of TIA/EIA IS-592.

17. An interworking function (IWF) device for wireless data transport with a server, being connected to a mobile terminal, comprising:

an RLP (Radio Link Protocol) performing unit for performing synchronization with the mobile terminal for a radio link, to establish a wireless data channel, so that data can be transmitted between the mobile terminal and the server;

a data formatting unit for selectively extracting an identifier by identifying whether data input through the wireless data channel connected by the RLP performing unit has a circuit-switched data (CSD) format or a packet-switched data (PSD) format;

an ATtention Dial (ATD) processing unit for performing dialing using a predetermined command, with the extracted identifier if the extracted identifier is a telephone number;

a modem unit for connecting to a server corresponding to the telephone number via a public switched telephone network (PSTN) if the extracted identifier is the telephone number; and

a network interface unit to connect to a server corresponding to an IP (Internet Protocol) address if the extracted identifier is the IP address.

18. A mobile terminal for wireless data transport with a server through an interworking function (IWF) device, comprising:

an AT (ATtention dial command) processing unit for performing a dialing using an ATtention Dial (ATD) command with an identifier including an IP (Internet Protocol) address;

a data formatting unit for formatting data input from the AT processing unit into circuit-switched data (CSD) or packet-switched data (PSD); and

a radio link protocol performing unit for performing an RLP synchronization for a radio link between the mobile terminal and the IWF device to establish a channel selected according to the ATD command, so that data can be transmitted between the mobile terminal and the server.