ECHAVARRI ANA (ES)
GONI JOAQUIN (ES)
LAFARGA GUILLERMO (ES)
ECHAVARRI ANA (ES)
GONI JOAQUIN (ES)
| WO2003024071A1 | 2003-03-20 | |||
| WO2001043475A1 | 2001-06-14 | |||
| WO2001020929A1 | 2001-03-22 |
| EP0840492A2 | 1998-05-06 |
| 1. | A communication system including PSTN and a mobile communication network where the mobile communication network is connected to a fixed cellular terminal and a fixed line (cable) from said terminal is arranged to a fixed standard telephone which forms a user interface to a subscriber wishing to use operator services, c h a r a c t e r i z e d in that said fixed cellular terminal includes means to provide the short message service for a subscriber over said fixed line. |
| 2. | A communications system according to patent claim 1, c h a r a c t e r i z e d in that said means to provide the short message service includes a SMS protocol stack for transmission between a fixed line Short Message Terminal Equipment and a network Short Message Service Center. |
| 3. | A communications system according to patent claim 1, c h a r a c t e r i z e d in that said SMS service on said fixed line of the FCT will allow the enduser to send and receive short messages through a Short message terminal equipment designed for this purpose. |
| 4. | A communications system according to patent claim 3, c h a r a c t e r i z e d in that terminal equipment will be connected to a fixed line interface of the FCT. |
| 5. | A fixed cellular terminal which forms the interface between a PSTN and a mobile communication network c h a r a c t e r i z e d in that said fixed cellular terminal includes means to provide the short message service for a subscriber over said fixed line. |
| 6. | A fixed cellular terminal which forms the interface between a PSTN and a mobile communication network patent claim 1, c h a r a c t e r i z e d in that said means to provide said short message service includes a SMS protocol stack for transmission between a fixed line Short Message Terminal Equipment and a network Short Message Service Center. |
| 7. | A fixed cellular terminal which forms the interface between a PSTN and a mobile communication network patent claim 1, c h a r a c t e r i z e d in that said SMS service on said fixed line of the FCT will allow the enduser to send and receive short messages through a Short message terminal equipment designed for this purpose. |
| 8. | A fixed cellular terminal which forms the interface between a PSTN and a mobile communication network patent claim 1, c h a r a c t e r i z e d in that terminal equipment will be connected to a fixed line interface of the FCT. |
The invention also includes a fixed cellular terminal, which forms the interface between a PSTN and a mobile communication network Many telecommunications operators have subscribers that want to have fixed standard telephones to their homes and offices.
When the operator don't have a fixed wire to offer he need to have a solution that fulfils the customer's demands. Examples of such solution with a fixed cellular terminal connected to the mobile network are described in US-5,991, 641 and US- 5,991, 641; US-6,195, 531; and US-6,122, 263 ; Fixed Cellular Terminals are conceived to provide a fixed line interface to the end user, but through a cellular terminal registered in a cellular network. Therefore, these terminals basically are interfaces between a fixed PSTN or ISDN device and a cellular radio. On a higher level, these terminals mainly provide the end-user or application with the usual fixed line services (supported, of course, by the cellular network): voice calls, fax calls, and data calls. In the case of analogue line (PSTN) terminals, these terminals have been enhanced to provide the end user on the analogue interface with some cellular
the end user on the analogue interface with some cellular network specific services, such as supplementary services (call forwarding, call barring, etc.).
One of the most important, popular, highly used, and economically boosting service on the cellular network has proved to be the Short Message Service (SMS). Not only end users have unexpectedly devoted themselves to this service, but also many end applications are using protocols that run on short messages. In other words, the Short Message Service is currently almost as important as the Speech Telephony service, both from the network operator's point of view and the end-user's point of view.
However, Fixed Cellular Terminal end-user's main interface (the fixed line) does not provide the SMS service. FCTs that do provide this service only offer it through an extra <BR> <BR> digital interface that they include (RS232, etc. ). Protocols that support the SMS service on this digital interface are not designed for man use but for external application use.
Therefore, this digital interface is acceptable for externally connected applications but not for man use. It is possible to conclude then that FCTs do not provide the short message service for the end user.
Therefor it is an object of the present invention to overcome said problem and provide telecommunication operators with a better infrastructure solution, which meet the demands of the subscriber.
It is a further object of the present invention to give the subscriber a SMS service designed for man use.
A further object is to create a fixed line interface in the FCT with a transmission protocol stack.
According to a one aspect of the present invention is provided a communication system including PSTN and a mobile communication network where the mobile communication network is connected to a fixed cellular terminal and a fixed line (cable) from said terminal is arranged to a fixed standard telephone which forms a user interface to a subscriber wishing to use operator services.
- said fixed cellular terminal includes means to provide the short message service for a subscriber over said fixed line.
- said means to provide the short message service includes a SMS protocol stack for transmission between a fixed line Short Message Terminal Equipment and a network Short Message Service Centre.
- said SMS service on said fixed line of the FCT will allow the end-user to send and receive short messages through a Short message terminal equipment designed for this purpose.
- that terminal equipment will be connected to a fixed line interface of the FCT.
According to a second aspect of the present invention is provided a fixed cellular terminal, which forms the interface between a PSTN and a mobile communication network.
- said fixed cellular terminal includes means to provide the short message service for a subscriber over said fixed line.
- said means to provide said short message service includes a SMS protocol stack for transmission between a fixed line Short Message Terminal Equipment and a network Short Message Service Centre.
- said SMS service on said fixed line of the FCT will allow the end-user to send and receive short messages through a Short message terminal equipment designed for this purpose.
- that terminal equipment will be connected to a fixed line interface of the FCT.
Providing the SMS service on the fixed line interface of the FCT will allow the end-user to send and receive short messages in a user-friendly way, through a SM-TE designed for this purpose. This terminal equipment will be connected to the fixed line interface of the FCT, and will take the shape of an enhanced telephone apparatus or something similar.
Embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 illustrates the SMS protocol stack for transmission between fixed line SM-TE and network SMSC.
A glossary of the abbreviations used in this patent specification is set out below to facilitate an understanding of the present invention.
CLI Calling Line Identity FCT Fixed Cellular Terminal ISDN Integrated Services Digital Network MMI Man-Machine Interface MO Mobile Originated MT Mobile Terminated
PSTN Public Switched Telephone Network SM Short Message SMS Short Message Service SMSC Short Message Service Centre (in the cellular network) SM-SC Short Message Service Centre (in the PSTN or ISDN network) SM-TE Short Message Terminal Equipment Traditionally, the fixed cellular terminal (FCT) takes the form of a box with an antenna (or cable to an external antenna), power input, and connections for POTS phones, faxes, and data devices such as personal computers. The most basic service offered by wireless local loop (WLL) systems is to provide standard dial tone service known as plain old telephone service (POTS).
To provide the SMS over the fixed line interface of an FCT.
This will be achieved by having the FCT work as the SM-SC that the SM Terminal Equipment (SM-TE) connected to the FCT expects to find on the PSTN/ISDN network. In other words, the FCT will implement any proprietary or standard (ETSI ES 201 912, etc. ) SM-SC protocol messages on its fixed line and convert them to the standard SM-associated protocol messages required by the cellular network.
In the case of supporting the standard ETSI protocol on the fixed line, the FCT will have to implement the following protocol stack (where the shaded protocols are new in the FCT):
The FCT will implement the Physical, Data Link and Transfer Layers so to support the transportation of the SM user data on the fixed line, as specified by ETSI ES 201 912. In addition, the FCT must be able to interface between the SM addressing on the fixed line and the SM addressing on the cellular network (in some way, this means it must behave as the SM-SC in a fixed line setup).
Therefore: In Mobile Originated (MO) short messages, the SM-TE will seize the line and dial the number of its associated SM-SC. The FCT, when detecting this number, must identify this as a SM instead of a call. It will then signal the SM-TE to start sending data (as if a call with its SM-SC had been established). Upon receiving the SM user data from the SM-TE, the FCT will send a SM message to the cellular network, addressed to its associated cellular network SMSC (not the SM-TE fixed network SM-SC).
Finally, it will terminate the call on the fixed line interface.
In Mobile Terminated (MT) short messages, upon receiving a SM from the cellular network, the FCT will start a call on the fixed line. So that the SM-TE can identify this call as an incoming SM, the FCT will set the Calling Line Identity (CLI) to the fixed line SM-SC, according to the fixed line format. The SM will then be transferred according to the fixed line protocol, and finally the call will be terminated.
This complete functionality requires the FCT to store several parameters (fixed line SM-SC numbers, terminal sub-addresses, etc. ) related to the fixed network short message protocols, besides the regular cellular network
SMS settings. The FCT shall provide an appropriate Man- Machine Interface (MMI) to allow the end-user to modify these settings and configure the FCT short message functionality.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.