Method and system for providing data communication with a...

Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching

Reexamination Certificate

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Details

C370S401000, C370S329000, C370S466000

Reexamination Certificate

active

06807168

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention is directed to a method and system for providing communication with a mobile station. More particularly, the present invention is directed to a method and system for transferring data from an Internet Protocol (IP) network to a mobile station on a non-IP network.
The demand for data communication capabilities continues to grow. Individuals seek more and more ways to access available data or to transmit data. An example of the continued growth of this industry is the explosion in communications over the Internet and in particular, the World Wide Web. Communications over this medium take place in what is commonly referred to as the HyperText Transfer Protocol (HTTP) or Internet Protocol (IP). An example of data communication configurations which allow a user to interact with the Internet are shown in
FIGS. 1A and B
.
In
FIG. 1A
a user at, for example computer terminal, such as a PC
10
, is connected via a modem
11
to a public switch telephone network (PSTN)
15
. Somewhere in that PSTN resides an access provider
20
. The access provider provides a datalink
25
to the Internet, here shown as HTTP NETWORK
30
. Typically, software referred to as a “browser” is loaded on the computer
10
and permits data communication with other data sources located in the Network
30
, an example of which is the Internet. Examples of such browsers include Netscape's Navigator and Microsoft's Internet Explorer. The computer
10
and the data resources in Network
30
communicate in an open language referred to as the hypertext mark-up language (HTML). While this configuration is very useful to the user, it has some limitations in that to be able to access information from the Internet the user must have a computer, such as a PC or laptop, for example, with them to be able to communicate with the Internet. Furthermore, it requires a wired connection to the PSTN to provide access to the Internet. This somewhat limits a user's ability to access the Internet.
FIG. 1B
represents one proposed attempt at providing a wireless connection from a user to the Internet. In this circumstance the user has a wireless communication device
100
that communicates over the air with a base station
110
. The base station is part of a wireless data network referred to as the cellular digital packet data (CDPD) network
120
. A special server
130
acts as an interface between the HTTP Network
140
and the CDPD network. An example of the communication device
100
is the AT&T PocketNet phone. In the PocketNet configuration the phone transmits information via a wireless IP network, the CDPD. The server
130
includes a software platform created by Unwired Planet. The software platform uses an open language called the hand-held device mark-up language, or HDML, to interactively display information on a hand-held device such as the PocketNet phone. The PocketNet phone browser and server applications support HDML. To access information or transmit a message, the user manipulates the phone browser's menu-based user interface with the phone keypad. Requests for information are routed through the wireless IP network and the wire line Internet to be processed at the server on which the application resides. The browser then displays the results of the query. There is, however, one limitation in the PocketNet application, namely that the phone can only receive data or interact with the Internet when the phone is in a data-only mode since communications over the CDPD are strictly data communications. The PocketNet configuration does not permit interaction with the data network or receipt of data while in a voice mode or in an idle mode.
It would be advantageous if a network could provide data communications to a hand-held device whereby the communications could take place while the device is either in an idle mode or in a voice mode.
Another wireless communications protocol known as IS-136, TIA/EIA/IS-136.1-A October 1996; TIA/EIA/IS-136.2 October 1990, herein incorporated by reference, provides a cellular phone with the capability of receiving short messages while in an idle mode or in a voice mode. However, messages are generated by a message center which provides appropriately formatted data to comply with the IS-136 protocol. The hand-held device does not communicate with an Internet data communication network.
SUMMARY OF THE INVENTION
The present invention provides a method and system which enhances a user's capability of communicating with an Internet-like network using a hand-held device. More specifically, the present invention permits the user to communicate with a data network while either in an idle mode or while in a voice mode.
In one embodiment of the present invention, a request to transfer data from an IP network to the mobile station is received; then it is determined whether the mobile station is registered in a first network. If the mobile station is so registered then the data is adapted to be transferred for transport via a teleservice provided in the first network and then the adapted data is transferred to the mobile station.
In one, more particular, embodiment of the present invention the mobile station is registered on an IS-136 network. The IP network informs a server of a desire to transfer a datagram to the mobile station. If the mobile station is registered in the network then the datagram is translated into an R-Data message in the IS-136 protocol and the R-Data message is transferred to the mobile station.
In a further embodiment of the present invention the mobile station may generate a request and that request for data will be translated into an appropriate format suitable for the IP network. In response to this request the IP network will send data back and the data will be translated into a format consistent with the teleservice network to which the mobile station is connected.
In a still further embodiment the request from the mobile station constitutes an R-Data message to a teleservices server and the data request is translated to a format suitable for the IP network. The IP network then sends a datagram in response to the request and the teleservices server translates the datagram to an R-Data message in the IS-136 protocol. The R-Data message is then transferred to the mobile station.
The transfer of data between the mobile station and the IP network can take place while in the idle mode or in the voice mode.


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Melanchuk, Dupont, Backer, “CDPD and Emerging Digital

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