FR2865880A1 - Call establishing method for mobile telecommunication network, involves interrogating technical resources to know roaming number attributed temporarily to user, and establishing communication with user in mobile zone based on number - Google Patents

Abstract

The method involves recording a calling line number of a mobile user, at a server (1). Technical coordinates are associated with the line number in a network to which the user is subscribed. Technical resources corresponding to the technical coordinates are interrogated for knowing roaming number attributed temporarily to the user. A communication is established with the user in his mobile zone based on the roaming number.

Description

REMINDER SOLUTION OF A MOBILE CORRESPONDENT ON A NETWORK

MOBILE TELEPHONY

  The present invention relates to the field of mobile telecommunications.

  The present invention relates more particularly to a method for making a call from a mobile telephone without using its mobile operator to bill the call, using a carrier different from its mobile operator by recalling the call. appellant. In the particular case of a mobile user, this callback can be made via the technical number of the mobile MSRN to avoid routing to an operator abroad.

  The prior art already knows many solutions for establishing calls from a mobile phone.

  For example, the prior art knows the GSM standard and more particularly the specifications of ETSI and 3GPP defining the call conditions from a mobile system.

  The prior art also knows, by various patents such as US A 5438616 and US A 5710809, callback based methods in which the user establishes a first connection to a server, then breaks the call. The server calls back the caller, prompts him to dial his correspondent's number, then establishes the second call and connects the two parties.

  There are also other solutions which partly remedy these disadvantages, which gave rise in particular to patents WO 0000 22863A1, EP 00 989719A2 and WO 00007391A1, processes in which the user establishes a packet connection (and not by circuit ) using the data transfer services (such as GPRS), the short message service (such as SMS) or the USSD supplementary service to transmit to the server the contact details of the called party, and allow him to simultaneously establish the call to the caller and the caller's callback, providing both time savings and savings in the price of the service that the service provider can pass on to user rates.

  Such methods, although proven, nevertheless have several major disadvantages: 1. When the server calls back the mobile user on his main call number (MSISDN defined in the GSM standard and ETSI), his operator mobile performs various treatments (identification, location, assignment of a technical resource, routing of the call to the recipient): these complex processes weaken the handling of the call and are subject to failures that can lead to break the call the server or forward it to the user's voicemail, 2. if the correspondent is online or temporarily unreachable, the server callback fails or re-routes to the recipient's voicemail 3. if the recipient is abroad, the server reminder is rerouted to the foreign host network, with the risk of failure or forwarding to voicemail, but in case of uccess of the redirection, with billing by the operator of which it is the subscriber of this follow-up of call, raising the cost of the service for the user 4. in case of routing of the server callback to the voicemail of the called party, this will result in a non-useful call billed to the service provider that will be reflected in its rates, 5. in the event of non-completion of the call back to the caller, this will result in a decrease in service quality perceptible to the user. could be recalled quickly.

  The prior art also knows call solutions by MSRN technical numbers as defined in the GSM standard.

  For example, in the application WO 97/17816, the MSRN number is used to efficiently route the calls according to the services requested by the user.

  However, no prior art document uses the mobile technical number in server call-back methods.

  The present invention intends to overcome the disadvantages of the prior art by allowing a user or his mobile terminal to make a call to a server to be called back and make a phone call independently of the mobile operator of which he is the subscriber, and to ensure that the server callback directly optimizes the server's routing and transport of the callback by minimizing the risk of failure, forwarding to voicemail, and when traveling abroad, avoiding The mobile operator of which he is the subscriber does not charge the customer the re-routing of the call to a foreign network.

  Another advantage of the invention is to be able to allocate to certain mobile systems, in addition to their usual telephone number, a second call number enabling them to be reached directly without requesting any intelligent routing function of the call in the network. their operator, avoiding e-mail referrals, and the costs associated with international roaming.

  Finally, thanks to the above device, it is possible to propose to a user in a country (for example France) the services of a foreign operator based SIM card registered with this foreign operator, while offering to this customer a phone number in the French dial plan.

  To do this, the present invention is of the above type and it relates in its broadest sense to a communication method on a mobile telecommunication network, comprising at least one server and a user equipped with a mobile telephone device, characterized in that it comprises at least the steps of: E Registering at said server the calling line number of said user É Associating at the user's number at least one technical coordinate in the network of which he is subscribed; É Interrogate the technical resources corresponding to the said technical coordinates to obtain the MSRN technical number provisionally assigned to the mobile user to be attached; Establishing communication with said mobile user in his mobility zone to said MSRN technical number.

  Preferably, said step of registering the user at the server is done by telephone call from the server.

  According to another embodiment, said step of registering the user at the server is done by SMS.

  In another embodiment, said step of registering the user at the server is done via the internet.

  In a variant, said step of registering the user at the server is done by WAP connection to CSD or GPRS.

  Preferably, said technical coordinate associated with said calling line number is the home location register (HLR) reference to which said user is attached.

  Advantageously, said technical coordinate associated with said calling line number is its IMSI number.

  Advantageously, said technical coordinate associated with said calling line number is the reference of the VLR (Visitor Location Register) to which said user is attached.

  According to one variant, said technical resource is the Home Location Register (HLR) to which said user is attached.

  According to another variant, said technical resource is the VLR (Visitor Location Register) to which said user is attached.

  The innovative nature of the method is due to the fact that the establishment of the callback call from the user is controlled by the server, without requesting a specific routing function of the call by the mobile operator on which the user depends, and avoiding any call transfer to a voicemail or any call redirection to a foreign network. Such a method applies to mobile systems in international roaming, to avoid the operator to charge the user the price of call redirection.

  The invention will be better understood from the following description, given purely for explanatory purposes, of one embodiment of the invention, with reference to the appended figures.

  Figure 1 shows the registration and recall steps for mobile communication.

  Illustrated Figure 1, according to a preferred embodiment, the customer wants to make a call from a country outside the network of its local operator. The user is for example in Belgium and his operator in Madagascar.

  The disadvantage of the prior art is to force the call to pass to the Malagasy operator before the communication can be established.

  According to the invention, the problem is solved by first calling the server (1) to provide the service to which the user is subscribed.

  At the time of registration of the user to the service, the call number of the latter is recorded in a database (2).

  The server will then associate with this list of numbers a list of technical coordinates corresponding to the user.

  This is done by querying the Home Location Register (HLR) of the operator (3) to which the user is subscribed, and querying its IMSI number to identify it in accordance with the GSM standard.

  According to one variant, this step can be performed by mobile operator teams that directly provide references to the user's HLR and IMSI.

  At the time of the call of the user wishing to establish a call, the server will then interrogate the HLR associated with the call number to obtain the technical number MSRN (roaming number), corresponding to a local technical number where the user can be reached.

  Eventually, this recovery step of the MSRN can also be done via the VLR (Visitor Location Register) accessible from the HLR registered in the database.

  It is also possible for the operator's HLR system to update at the server level a lookup table between the list of registered users of the service and their home VLRs, in order to directly query the VLR that the user depends on. the moment of the request and thus obtain the technical number MSRN.

  Once the technical number obtained by the server, it establishes a communication call back to the user to his Belgian technical number, which allows him to make a phone call.

  Thus, during the entire process above, at no time did the user have to establish communication with his Malagasy operator, which greatly reduces call costs from abroad.

  Moreover, in case the mobile system of the user is unreachable or if the line is busy, the server will automatically disconnect the call without going through a voicemail processed by the remote operator.

  The invention is described in the foregoing by way of example. It is understood that the skilled person is able to realize different variants of the invention without departing from the scope of the patent.

Claims (10)

  A communication method on a mobile telecommunication network, comprising at least one server and a user equipped with a mobile telephone device associated with a mobile operator, characterized in that it comprises at least the steps of: at said server the calling line number of said user É Associating the user's number with at least one technical coordinate in the network of which he is subscribed; É Interrogate the technical resources corresponding to the said technical coordinates to obtain the MSRN technical number provisionally assigned to the mobile user to be attached; E Establish a communication with said mobile user in his mobility zone to said MSRN technical number.   2. A communication method on a mobile telecommunications network according to claim 1, characterized in that said step of registering the user at the server is done by telephone call from the server.   3. A method of communication on a mobile telecommunications network according to claim 1, characterized in that said step of registering the user at the server is done by SMS.   4. A communication method on a mobile telecommunications network according to claim 1, characterized in that said step of registering the user at the server is done via the Internet.   5. A method of communication on a mobile telecommunications network according to claim 1, characterized in that said step of registering the user at the server is done by WAP connection to CSD or GPRS.   The communication method on a mobile telecommunication network according to claim 1, characterized in that said technical coordinate associated with said calling line number is the reference of the Home Location Register (HLR) to which said user is attached.   7. A method of communication on a mobile telecommunications network according to claim 1, characterized in that said technical coordinate associated with said calling line number is its IMSI number.   The communication method on a mobile telecommunication network according to claim 1, characterized in that said technical coordinate associated with said calling line number is the reference of the VLR (Visitor Location Register) to which said user is attached.   9. A communication method on a mobile telecommunications network according to claim 1, characterized in that said technical resource is the HLR (Home Location Register) to which said user is attached.   10. A method of communication on a mobile telecommunications network according to claim 1, characterized in that said technical resource is the VLR (Visitor Location Register) to which said user is attached.