Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2000-04-26
2003-01-28
Le, Thanh Cong (Department: 2684)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S466000, C455S561000
Reexamination Certificate
active
06512926
ABSTRACT:
PRIOR ART
Dynamic routing system for short messages (SMS) sent by a calling party using a mobile GSM telephone connected to the network of an operator of mobiles for an intended recipient of short messages (other GSM mobile subscribers or a pager) not belonging to the same mobile telephone network as the call party, nor necessarily to networks linked by roaming agreements or by interconnection agreements for the transmission of short messages (SMS).
the short message (SMS) being composed of a routing envelope with a first field (E
1
) containing the number of the calling party's mobile, a second field (E
2
) intended to receive the number of the first short message transmission centre (SMSC) of the network of the operator of the calling party's mobile, a third field (E
3
) containing the called mobile number, as well as a field reserved for the text of the message (TM),
this system comprising short message transmission centres (SMSC) belonging to the same network or to a different network.
This is currently possible from a mobile (GSM or other) capable of comprising text messages (known as “short messages”) and sending them to other mobiles (GSM, “pagers”, etc.). And also from an INTERNET access.
The number of mobile or Internet access (IAP or ISP) network operators makes this ideal of interworking difficult, bearing in mind the technical constraints and the commercial restrictions due to competition.
Interest in such a service is increased if the users can send a message without themselves having to know all the agreements made by their GSM or Internet suppliers for sending messages to other networks.
Such a system which is known will first of all be described below with the aid of
FIG. 1
which shows in a general manner the means which currently permit transmission of a short message and the structure of the actual short message.
In a second part, this prior art will be described in a more detailed manner with the terminology used in this field. Since this terminology is used solely and universally in its Anglo-Saxon form it has been necessary to use this terminology in the detailed description, and a glossary has been given at the end of the description in order to explain the different acronyms and abbreviations used in accordance with international GSM standards.
According to
FIG. 1
, a mobile telephone network (a mobile telephone is more simply called a “mobile”) is composed of a base terminal station BTS with which the mobile M
1
communicates. This terminal BTS as well as other terminals BTS are connected to a base station concentrator BSC. Several such concentrators BSC of one and the same network operator are connected to a mobile switching centre MSC.
When this centre MSC receives the request for connection of the mobile M
1
to a called mobile M
2
belonging to the same network, it can establish the communication to this mobile M
2
via the same concentrator BSC or another base to the terminal BTS to which the mobile M
2
belongs.
In the case of a mobile M
3
which does not belong to the network, it is necessary for the centre MSC to use an international gateway with the other network in order to communicate.
The networks are represented in a simplified manner in FIG.
1
.
The terminals BTS are distributed territorially in order to be connected to the mobiles of a certain geographical area. All these BTSs are connected to a concentrator BSC. There are several such concentrators BSC. These concentrators are themselves connected to a switching centre MSC.
When a request for a call for telephone communication is made by the mobile M
1
to the destination of the mobile M
2
, the mobile M
1
indicates solely the number of the mobile M
2
to be reached. This request terminates at one of the centres MSC which in order to known the called M
2
from its number must interrogate a database HLC which interprets the number of the called M
2
and indicates, if it knows it, the centre MSC which must establish a connection passing via a concentrator BSC, then a terminal BTS.
The database IILR is the database of the subscriber's network containing its location (even on another network) and its profile.
When the connection is established, voice communication can be made between the mobiles M
1
and M
2
.
In order to pass to another network, if M
1
wishes to communicate with a mobile M
3
belonging to another operator network, the centre MSC reaches the called M
3
by passing via a gateway GMSC to the international telephone network.
The possibility of general voice communication of mobile telephones does not exist for transmission of short messages SMS (short message service) consisting of sending alphanumeric messages to a called party. This called party may be another mobile, of which the screen permits the message to be displayed in alphanumeric text. It may also be a pager, that is to say a portable terminal like a mobile but which can only receive written messages.
Currently for the short message service the network includes one or more short message service centres SMSC linked to a centre MSC. Since the short message service is not provided to all subscribers, this possibility of short messages which exists intrinsically on a mobile can only be used if the subscription provides for it.
The request for transmission and the effective transmission of short messages very generally make use of the network of the mobile telephone operator possibly with certain restrictions.
Thus in order to send a short message SMS, the calling mobile M
1
sends its message SMS-MO which arrives at a centre MSC. This latter transmits it to the short message centre SMSC which examines the possibility or barring of transmission of the message. If the short message transmission service does not form part of the possibilities allowed on the mobile M
1
, the operation is blocked at this level. But if M
1
is authorised to transmit short messages to other subscribers to the operator's network the centre SMSC gives this authorisation and the message is then routed towards the called party M
2
. The connection is established with a voice telephone communication. The centre SMSC is obliged to interrogate the database HLR via the centre MSC in order to know the path to the called M
2
.
If the network operator has an agreement with another network in the same country, and if the calling party M
1
is authorised to benefit from this service, this possibility is confirmed by the centre SMSC; the centre MSC goes back to the database HLR of M
2
in order to know the path to define to the addressee of the message belonging to another network which has a transmission agreement with the present network.
In a general way, the mobile telephone networks are national networks managed by a national operator. For international exchanges the operators have agreements with foreign operators who transmit the calls from a mobile in one country to a mobile abroad.
There are also possibilities for use of the mobile telephone for telephone communication from a foreign country, that is to say from a different network from the national network to which the mobile M
1
subscribes. In this case, by virtue of usage (roaming) agreements the mobile M
1
which is in a foreign country can access the local network and use the different terminals BTS, concentrators BSC and centres MSC of the country concerned in order to reach a called party in this country or in another country.
However, for different reasons such possibilities do not exist for the transmission of short messages or are not widespread for short messages or at least these possibilities are very limited.
There are also short message services which are strictly limited to a group of subscribers.
It should also be noted that the break in the path of a short message is situated at the level of the centre SSC. Between the mobile M
1
and the centre SMSC the short message is entitled SMS-MO (short message sent from a “mobile”) whilst downstream of the centre SMSC the message is entitled SMS-MT (a short message sent to a mobile from a service centre).
The tra
Baker & Daniels
Cong Le Thanh
Le Lana
Nilcom
LandOfFree
Dynamic routing system for a short message sent by a calling... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dynamic routing system for a short message sent by a calling..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic routing system for a short message sent by a calling... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3021252