WO2008003840A1 - Method of communication between terminals with the despatching of a list of events dependent on the location of the calling terminal, server, network and computer program for such communication - Google Patents

Method of communication between terminals with the despatching of a list of events dependent on the location of the calling terminal, server, network and computer program for such communication Download PDF

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Publication number
WO2008003840A1
WO2008003840A1 PCT/FR2006/050664 FR2006050664W WO2008003840A1 WO 2008003840 A1 WO2008003840 A1 WO 2008003840A1 FR 2006050664 W FR2006050664 W FR 2006050664W WO 2008003840 A1 WO2008003840 A1 WO 2008003840A1
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WO
WIPO (PCT)
Prior art keywords
calling terminal
list
events
call
server
Prior art date
Application number
PCT/FR2006/050664
Other languages
French (fr)
Inventor
Dominique Drand
Michel Suhr
Michel Le Creff
Original Assignee
Alcatel Lucent
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel Lucent filed Critical Alcatel Lucent
Priority to PCT/FR2006/050664 priority Critical patent/WO2008003840A1/en
Priority to EP06779005A priority patent/EP2041951A1/en
Publication of WO2008003840A1 publication Critical patent/WO2008003840A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/51—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing
    • H04M3/5116—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing for emergency applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2242/00—Special services or facilities
    • H04M2242/14—Special services or facilities with services dependent on location

Definitions

  • the invention relates to the field of telecommunications. More specifically, it relates to the linking of two terminals, a calling terminal, in particular a mobile telephone, and a called terminal, typically a call center.
  • the call centers are PABX (Private Automatic Branch eXchanger) sized for large and specific traffic such as
  • Call center switches are, like circuit trunks, sized according to Erlang's laws. Thus, a switch having to deal with a traffic of 1 E will receive on average 60 calls of one minute during one hour. In principle, if all subscribers call at the same time, the call center is blocked and can not dispense with a single call.
  • IVS Interactive Voice Servers
  • the invention particularly relates to communications in the event of a sudden and generally unforeseen event that requires immediate measures to minimize its harmful consequences.
  • call center operators would not want to receive information about events that do not require any particular action. It is estimated that only 40% of calls to emergency call centers require feedback. The remaining 60% are requests for information, manipulations to test the device, for example the mobile phone, calls from children playing, malicious acts, and calls announcing events already known to help.
  • the success of mobile telephony increases the risk of saturation of call centers. This is particularly the case for emergency call centers, especially as in public telephone radio networks, in particular GSM, an emergency connection can be established even without the right of access to the network which covers the network. where you are, and even without an SI M (Subscriber Indentity Module) card in the calling terminal.
  • SI M Subscriber Indentity Module
  • the invention aims to provide a solution to the aforementioned problems.
  • the invention relates, in a first aspect, to a method of communication between a calling terminal and a called terminal, this method comprising a step of receiving by a server a call-up request from the calling terminal, this request comprising location data of the calling terminal, this method comprising: restoring a list of events that have occurred, for a predetermined time, in a perimeter corresponding to the estimated location of the calling terminal; sending to the calling terminal of this list of events.
  • the method comprises, after sending to the calling terminal of the list of events, placing the calling terminal in communication with the called terminal. This setting in communication occurs especially when, having taken knowledge of the list of events, a communication is still desired.
  • the sending to the calling terminal of the list of events is carried out by voice message. If necessary, a text message is also sent to the calling terminal.
  • the called terminal includes an emergency call center, the call setup request comprising an emergency request.
  • the method thus makes it possible to limit the congestion of the network.
  • the calling terminal is mobile, the location data comprising geolocation data obtained in particular by identification of the cell or sector, estimation of arrival times (TOA Time of Arrival, EOTD Enhanced Observed Time Difference TDOA), estimated angles of arrival or angles of incidence (AOA). The method thus makes it possible to limit the congestion of the mobile telephone networks.
  • the calling terminal is a mobile, in particular GSM or UMTS, provided with a GNSS receiver such as GPS, GLONASS or GALI LEO, the location data of the calling terminal including geolocation data.
  • a GNSS receiver such as GPS, GLONASS or GALI LEO
  • the invention relates to a server provided with means for receiving a call-up request from a calling terminal, this server further comprising means for identifying the location data of the calling terminal. , characterized in that it further comprises and means for restoring a list of events occurring, for a predetermined time, in a perimeter corresponding to the estimated location the calling terminal; and means for sending to the calling terminal of this list of events.
  • the server comprises voice synthesis means for establishing said list of events.
  • the invention relates, in a third aspect, to a telecommunications network comprising a server as presented above, as well as a call center and a database connected to the server, characterized in that the database includes the list of events reported to the call center.
  • the invention relates to a computer program product comprising instructions for analyzing a call setup request from a calling terminal to a called terminal, which product comprises:
  • the computer program product further comprises instructions for entry into the database of a new event, by generating predefined input interfaces according to an identified event type. by the operator.
  • an identification of the language of the caller is performed by analyzing the number of the calling mobile phone.
  • the calling number is presented to the server in its canonical form which thus makes it possible to identify the country of origin of the telephone subscription. For example, when the server receives a call whose caller ID is +33 followed by 9 digits, we deduce that it is a terminal whose user is most likely French. If the identifier of the applicant starts with +49 followed by several digits, we deduce that it is most likely a German. The analysis of the first digits thus makes it possible to estimate the language of the caller.
  • the server sends a voice message to the caller for example a short answer simple question in the languages most frequently encountered for the territory covered by the call center.
  • the server established a call between the caller and a group of translators.
  • the server is able to send him a specific message discouraging him to remain online if his call relates to a call center known event and corresponding to the location of the caller and it is not necessary to connect the caller and a call center operator.
  • the operator collating the data is advantageously determined according to the profile of the caller.
  • the operator will thus advantageously have a good personal practice of the language of the caller.
  • the server directs the call to this operator.
  • this pattern will appear on the screen of the operator so as to enable him to record the data in any order.
  • the operator can record the elements communicated by the caller, without having to interrupt or lose the thread of his ideas.
  • a computer program will ensure the consistency of the data entered by the operator.
  • a computer program configures the pattern according to the nature of the event recounted by the appellant (financial crash, attacks, natural disasters such as, for example, floods, fires, industrial accidents, crashes). airplane)
  • the pattern to be completed by the operator brings together the most frequent cases, so that the operator can concentrate all his attention on listening to the caller.
  • the pattern of questions appears advantageously in the language of communication between the caller and the call center. If needed, a computer program can then provide automatic translation of this data into another working language.
  • a schematic example of a pattern portion for a rescue call center receiving a call signaling a fire is given below:
  • a computer program based on the data entered by the operator for the reported event, determines the perimeter in which the actors or witnesses of this event may be.
  • an operator for example, the one having entered the data relating to the event
  • a speech synthesis device prepares a voice message intended for any new caller located in said perimeter.
  • this message includes, for example, an expression of the following type: "if your call concerns [summary of the event known to the call center] and you do not have - same need of assistance, thank you to hang up, other people who may need to contact us Erasmus
  • the message may include an expression of the following type: "If your call does not concern [summary of known call center event] please [type on this key on the phone or say no after the next signal] ".
  • the voice message is advantageously updated. It is sent to the new callers of the considered perimeter, with update, only for a predetermined time.
  • the message is looped until response from a call center operator.
  • the list of events corresponding to the location from which the call is made, stored in the database is used to develop a voice message using a voice synthesis system.
  • the voice message comprises at least a predetermined portion and at least one additional information resulting from the list of events.
  • the list of events containing at least one event.
  • the predetermined part of the message can be the result of the recording of a human voice or the result of the speech synthesis of a text stored in the database.
  • the list can vary -nas of over-accidents-
  • the telecommunication between the caller's terminal and the call center comprises four phases: a first phase, called identification, location and information phase, in which the call from the calling terminal is presented to the call center. call, it is during this phase that the language used by the caller and the location of the place are determined. call and that the relevant voice message is addressed to the calling terminal; a second phase, in which the call is routed to an operator, the choice of the operator can be made according to criteria such as the language or languages spoken, the event or special skills; a third phase, called communication phase, in which the caller and the operator are connected; a fourth phase, called termination, in which the communication between the two terminals is cut off.
  • a first phase called identification, location and information phase
  • call it is during this phase that the language used by the caller and the location of the place are determined. call and that the relevant voice message is addressed to the calling terminal
  • a second phase in which the call is routed to an operator, the choice of the operator can be made according to criteria such as the language or languages spoken,
  • Locating the calling terminal can be provided in various ways, depending on the type of terminal (landline, mobile phone, PDA).
  • the document US 5508707 describes a method comprising the following steps: determining the contours of the different coverage areas of the base stations that can receive the transmission of a call from a mobile station, so as to define a first area boundary that describes the position of the mobile station; determine which lobes in the case of an AMRE system (or SDMA for Space Division Multiple Access) or which filters (in the case of a non-AMRE system) of different base stations, communicate with the mobile station, so as to define a second boundary area describing the position of this mobile station; determining the intersection area of the first and second boundary wings, so as to obtain relatively accurate information on the position of the mobile station.
  • AMRE system or SDMA for Space Division Multiple Access
  • filters in the case of a non-AMRE system
  • the call center server receives the location information of the mobile phone of the caller, including the technique implemented for this location, the server can thus ensure that the position of the calling terminal corresponds, given the accuracy of the locating technique, at the position possibly indicated by the appellant himself.
  • the location accuracy of a mobile terminal depends on many factors. It depends in the first place on the localization technique used. It also depends on the state of the terrestrial infrastructures involved in the localization, these infrastructures being able to be degraded during natural disasters. Location accuracy also depends on the immediate environment of the calling terminal.
  • the position can be obtained by identifying the cell
  • the position of a mobile phone can be obtained more accurately by triangulation, when several base stations pick up the call from the particular mobile.
  • the signals used for triangulation may be RXLEV measurements
  • This reading is coded on 6 bits and represents the powers of -1 10 dBm at -48 dBm in steps of I dBm. This parameter is used to evaluate the quality of the MS-BS link and to drive it to the handover if necessary.
  • the estimation of the arrival times is carried out on the signals of the uplink (emitted by the mobile and received at the level of the BS ) or downlink signals (mobile signals).
  • each estimated AOA defines a half right vertex the concerned base station, on which is located the mobile phone. Two measurements of AOA are therefore necessary to locate the mobile.
  • the mobile phone location only requires listening to a single BS.
  • the position of a mobile phone can also be obtained for GSM (Global System for Mobile Communications) equipped with a Global Navigation Satellite System (GNSS) receiver such as a Global Positioning System (GPS) receiver, GLONASS or GALILEO by which the mobile phone picks up programs from satellites to know its position.
  • GNSS Global Navigation Satellite System
  • GPS Global Positioning System
  • GLONASS Global Positioning System
  • GALILEO Global Positioning System
  • This location technique uses a plurality of satellites continuously transmitting a phase modulated pseudo-random signal.
  • the receiver determines pseudo-random codes which modulate the signals coming from satellites, called “in view", belonging to a constellation of positioning satellites (for example GPS) and related to a time. reference, usually called system time.
  • the signals received from the satellites "in view” are compared to replicas of signals resulting from hypotheses on the system time and on the satellite timing frequency, in order to deduce from them the pseudo-random codes. which modulate the received signals.
  • correlation measurements are usually made based on pairs of time and frequency assumptions.
  • the receiver delays the start of this code transmission until its signal is superimposed with that coming from the satellite. The value of this delay is thus the time taken by the signal to propagate from the satellite to the user. Since the clock of the GPS receiver is never fully synchronized with that of the satellites, the receiver will have to constantly adjust its clock by successive approximations in order to reach the maximum correlation.
  • the acquisition of the signal therefore requires a significant time scan by the receiver.
  • the clock of the receiver is affected by a bias: it is not totally synchronous with the GPS system, the atomic clocks of the GPS satellites having a level of precision much higher than that of the GPS receiver.
  • This clock bias time difference between the receiver clock and the satellite clock
  • Each time-of-flight measure represents the radius of a sphere centered on a particular satellite, the receiver being located on that sphere. With two distance measurements, the position of a receiver is on a formed circle by the intersection of two spheres. A third simultaneous measurement reduces the two-point intersection, one of which is far away in space and is easily isolated.
  • the position calculation implements a mobile device receiving and processing GNSS signals and communicating with a cellular network, and a support data server in charge of broadcasting data to assist the processing of GNSS signals made in the mobile.
  • a support data server in charge of broadcasting data to assist the processing of GNSS signals made in the mobile.
  • the server broadcasts help data to measure pseudo-distances on the GPS signals, these measurements then being returned to the server that calculates the position.
  • the constellations of positioning satellites are advantageously coupled to so-called augmentation systems, of the SBAS (Satellite Based Augmentation System) type, comprising earth stations and geostationary satellites (for example IMMARSAT and ARTEMIS).
  • SBAS messages allow a correction of the data provided by the positioning satellites, more particularly time synchronization errors between navigation satellites and ephemeris errors, propagation errors.
  • the mode of communication of the location information varies according to the location technology used. If the location is performed by a GPS receiver integrated in the calling terminal, the action of calling an emergency number is interpreted in the calling terminal which inserts the location data (longitude, latitude, altitude) in a particular field the call setup request message. This call setup message is directed to the call center which receives inter alia the number of the calling terminal and the geographical coordinates of the place of the call. If the location is realized by the radio communication network, any call to a rescue call center will be treated in a particular way so as to insert in the call request terminating at the emergency center the information of location of the call.
  • the implementation of the invention offers many advantages.
  • the duration of the redundant calls is reduced by the implementation of the invention, releasing lines without monopolizing the time of an operator.
  • witnesses or victims of events still unknown to a call center will be able to reach this call center more easily.
  • the risks of panic or panic of the witnesses of an event are diminished by the diffusion to all

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Marketing (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)

Abstract

Method of communication between a calling terminal and a called terminal, this method comprising a step of receiving through a server a request to set up a communication originating from the calling terminal, this request comprising location data for the calling terminal, this method being characterized in that it comprises: the establishing of a list of events that have occurred, since a predetermined time, in a perimeter corresponding to the estimated location of the calling terminal; the despatching to the calling terminal of this list of events. Server, network and computer program product allowing the implementation of such a method.

Description

PROCEDE DE COMMUNICATION ENTRE TERMINAUX AVEC L'ENVOI D'UNE LISTE D'EVENEMENTS DEPENDANT SUR LA LOCALISATION DU TERMINAL APPELANT, SERVEUR, RESEAU ET PROGRAMME D'ORDINATEUR POUR UNE TELLE COMMUNICATIONMETHOD FOR COMMUNICATING TERMINALS WITH THE SENDING OF A DEPENDENT EVENT LIST ON THE LOCATION OF THE CALLING TERMINAL, SERVER, NETWORK AND COMPUTER PROGRAM FOR SUCH COMMUNICATION
L'invention a trait au domaine des télécommunications. Plus 5 précisément, elle concerne la mise en relation de deux terminaux, un terminal appelant, en particulier un téléphone mobile, et un terminal appelé, typiquement un centre d'appel.The invention relates to the field of telecommunications. More specifically, it relates to the linking of two terminals, a calling terminal, in particular a mobile telephone, and a called terminal, typically a call center.
Les centres d'appel sont des PABX (Private Automatic Branch eXchanger) dimensionnés pour des trafics importants et spécifiques telsThe call centers are PABX (Private Automatic Branch eXchanger) sized for large and specific traffic such as
10 que ceux des marchés financiers, du télémarketing, des services de secours, des services d'assistance ou de maintenance en ligne, des services d'appel à témoignage, par exemple suite à disparition d'enfant.10 financial markets, telemarketing, emergency services, online assistance or maintenance services, and call-to-witness services, for example following the disappearance of a child.
L'invention concerne plus particulièrement les domaines d'activités dans lesquels il existe un risque de saturation de centresThe invention relates more particularly to the fields of activity in which there is a risk of saturation of centers
15 d'appels.15 calls.
Les autocommutateurs des centres d'appels sont, comme les faisceaux de circuits, dimensionnés en fonction des lois d'Erlang . Ainsi , un autocommutateur devant faire face à un trafic de 1 E recevra en moyenne 60 appels d'une minute pendant une heure. En principe, si 20 tous les abonnés appellent en même temps, le centre d'appel est bloqué et ne peut écouler un seul appel.Call center switches are, like circuit trunks, sized according to Erlang's laws. Thus, a switch having to deal with a traffic of 1 E will receive on average 60 calls of one minute during one hour. In principle, if all subscribers call at the same time, the call center is blocked and can not dispense with a single call.
Il est possible d'augmenter la puissance de traitement d'un autocommutateur en le dotant d'un logiciel de traitement d'appel avec automate vocal. Les SVI (Serveurs Vocaux Interactifs) présentent auxIt is possible to increase the processing power of a switch by providing it with call processing software with voice automaton. IVS (Interactive Voice Servers) present to
25 appelants une arborescence de messages pré-enregistrés, l'appelant pouvant se déplacer dans cette arborescence en saisissant des informations sur son terminal ou par reconnaissance vocale. Ces SVI sont le plus souvent peu conviviaux. Ils ne conviennent pas, en particulier, lorsque l'appelant n'est pas en état de comprendre les25 callers a tree of pre-recorded messages, the caller can move in this tree by entering information on the terminal or by voice recognition. These SVI are most often not very user-friendly. They are unsuitable, in particular, when the appellant is not in a position to understand the
30 messages de l'automate, par exemple parce qu'il ne connaît pas la langue des messages de l'automate.30 messages from the PLC, for example because it does not know the language of the PLC messages.
L'invention concerne notamment les communications en cas d'événement brusque et généralement imprévu qui requiert des mesures immédiates pour minimiser ses conséquences néfastes. DeThe invention particularly relates to communications in the event of a sudden and generally unforeseen event that requires immediate measures to minimize its harmful consequences. Of
35 telles situations génèrent du stress pour les témoins éventuels comme pour les acteurs de tels événements. Des communications efficaces lors des premières phases d'un événement peuvent l'empêcher de prendre des proportions catastrophiques. Il est fréquent qu'un premier événement requérant déjà par lui-même des mesures immédiates entraîne en cascade d'autres événements. Par exemple, lors d 'accidents de la circulation , les sur accidents sont fréquents, et impliquent parfois les secouristes eux-mêmes. Les opérateurs de centre d'appel doivent distinguer l'accident lui-même de ses complications.Such situations generate stress for potential witnesses as well as for actors of such events. Effective communications in the early stages of an event can prevent it from escalating to catastrophic proportions. It is common for a first event that already requires immediate action itself to cascade other events. For example, in road traffic accidents, accidents are common, and sometimes involve first responders themselves. Call center operators must distinguish the accident itself from its complications.
Lors de calamités telles que par exemple catastrophes naturelles ou technologiques, les centres d'appel, en particulier ceux des secours, sont inondés d'appel provenant de témoins, de victimes, ou de leurs familles. Les milliers de centres d'appel de secours dans l'U nion Européenne reçoivent ainsi chaque année quelque 200 millions d'appel de la part de citoyens en détresse : accidents cardiovasculaires, apoplexies, accidents de la route, suicides, noyades, violences entre personnes, incendies, chutes, empoisonnements, actes terroristes. Les opérateurs doivent distinguer, dans ce flot d'appel, ceux qui sont redondants de ceux qui signalent un nouvel événement ou une modification d'un événement déjà signalé. Les événements de grande ampleur (par exemple krach financier, attentats, catastrophes naturelles, accidents industriels, crash d'avions) concernent par nature un grand nombre de personnes et ont de multiples aspects et conséquences. Dans ces situations de crise à évolution rapide, les opérateurs des centres d'appel souhaiteraient ne pas recevoir des informations qu'ils connaissent déjà ou qui sont obsolètes pour pouvoir concentrer leurs efforts sur les informations pertinentes et mises à jour.During calamities such as natural or technological disasters, call centers, especially those of relief, are flooded with calls from witnesses, victims, or their families. Thousands of emergency call centers in the European Union receive some 200 million calls each year from citizens in distress: cardiovascular accidents, apoplexy, road accidents, suicides, drownings, violence between people , fires, falls, poisonings, terrorist acts. Operators should distinguish in this call flow those which are redundant from those reporting a new event or a modification of an already reported event. Large-scale events (eg financial crashes, bombings, natural disasters, industrial accidents, plane crashes) are inherently large in number and have many aspects and consequences. In these rapidly evolving crisis situations, call center operators would not want to receive information they already know or are obsolete in order to focus on relevant and up-to-date information.
Plus généralement, les opérateurs des centres d'appel souhaiteraient ne pas recevoir d'informations sur des événements qui ne nécessitent aucune mesure particulière. Il est estimé q ue seulement 40% des appels aux centres d'appel de secours nécessitent une réaction. Les 60% restant sont des demandes d'information , des manipulations destinées à tester l'appareil, par exemple le téléphone mobile, des appels provenant d'enfants qui jouent, des actes malveillants, et des appels signalant des événements déjà connus des services de secours. Le succès de la téléphonie mobile augmente les risques de saturation des centres d'appels. C'est en particulier le cas pour les centres d'appels de secours, d'autant que dans les réseaux radio téléphoniques publics, notamment GSM, une connexion d'urgence peut être établie même sans droit d'accès au réseau qui couvre l'endroit où l'on se trouve, et même sans carte SI M (Subscriber Indentity Module) dans le terminal appelant.More generally, call center operators would not want to receive information about events that do not require any particular action. It is estimated that only 40% of calls to emergency call centers require feedback. The remaining 60% are requests for information, manipulations to test the device, for example the mobile phone, calls from children playing, malicious acts, and calls announcing events already known to help. The success of mobile telephony increases the risk of saturation of call centers. This is particularly the case for emergency call centers, especially as in public telephone radio networks, in particular GSM, an emergency connection can be established even without the right of access to the network which covers the network. where you are, and even without an SI M (Subscriber Indentity Module) card in the calling terminal.
En 1995, on dénombrait aux Etats-Unis 34 millions d'abonnés au téléphone mobile (statistiques de la Cellular Télécommunications and Internet Association) et 20 millions d'appel ont été reçus au centre d'appel de secours cette même année. Actuellement, le nombre d'abonnées au téléphone mobile est estimé à 1 16 millions aux Etats- Unis, et le nombre d'appels réalisés à partir d'un téléphone mobile vers le centre d'appel de secours serait de l'ordre de 50 millions par an . L'efficacité des centres d'appel est fréquemment amoindrie par le manque partiel ou total d'informations sur la localisation de l'appelant qui ne sait pas nécessairement lui-même où il se trouve exactement.In 1995, there were 34 million mobile phone subscribers in the United States (statistics from the Cellular Telecommunications and Internet Association) and 20 million calls were received at the emergency call center that same year. Currently, the number of mobile phone subscribers is estimated at 1 16 million in the United States, and the number of calls made from a mobile phone to the emergency call center would be in the order of 50 million a year. The effectiveness of call centers is frequently diminished by the partial or total lack of information on the whereabouts of the caller who does not necessarily know himself exactly where he is.
L'efficacité des centres d'appel est également souvent amoindrie par le manq ue d'informations précises données par l'appelant sur l'événement dont il veut faire part. Ce manque d'informations peut provenir du stress, de la panique ou de l'affolement de l'appelant qui ne parvient pas à s'exprimer ou qui s'embrouille.The effectiveness of call centers is also often diminished by the lack of precise information given by the caller about the event he wants to share. This lack of information can come from the stress, panic or panic of the caller who can not express himself or who gets confused.
Il est fréquent aussi que la langue de l'appelant soit un obstacle : chaque année, plus de 100 millions d'Européens se déplacent à l'intérieur des frontières de l'Union Européenne (touristes, travailleurs, simples transfrontaliers). Un numéro d'appel d'urgence unique a été établi en 1991 pour l'Union Européenne. Treize ans plus tard , une évaluation de ce service lors de la préparation du championnat de football « Euro 2004 » au Portugal a montré que 20% des appels en français et 29% des appels an anglais n'ont pas reçu d'aide du tout (DECO 112 Service Survey Final Overall Report). L'obstacle de la langue peut être important lors de catastrophes transfrontalières.It is also common that the language of the caller is an obstacle: every year, more than 100 million Europeans move within the borders of the European Union (tourists, workers, simple cross-border). A unique emergency call number was established in 1991 for the European Union. Thirteen years later, an evaluation of this service during the preparation of the "Euro 2004" football championship in Portugal showed that 20% of calls in French and 29% of calls in English did not receive any help at all. (DECO 112 Service Survey Final Overall Report). The language barrier can be important in cross-border disasters.
L'invention vise à apporter une solution aux problèmes susmentionnés. A ces fins, l'invention se rapporte, selon un premier aspect, à un procédé de communication entre un terminal appelant et un terminal appelé, ce procédé comprenant une étape de réception par un serveur d'une requête de mise en communication en provenance du terminal appelant, cette requête comprenant des données de localisation du terminal appelant, ce procédé comprenant : rétablissement d'une liste d'événements survenus, depuis un temps prédéterminé, dans un périmètre correspondant à l'emplacement estimé du terminal appelant ; l'envoi au terminal appelant de cette liste d'événements. Avantageusement, le procédé comprend , après l'envoi au terminal appelant de la liste d'événements, la mise en communication du terminal appelant avec le terminal appelé. Cette mise en communication intervient notamment lorsque, ayant pris connaissance de la liste d'événements, une communication est tout de même souhaitée.The invention aims to provide a solution to the aforementioned problems. For these purposes, the invention relates, in a first aspect, to a method of communication between a calling terminal and a called terminal, this method comprising a step of receiving by a server a call-up request from the calling terminal, this request comprising location data of the calling terminal, this method comprising: restoring a list of events that have occurred, for a predetermined time, in a perimeter corresponding to the estimated location of the calling terminal; sending to the calling terminal of this list of events. Advantageously, the method comprises, after sending to the calling terminal of the list of events, placing the calling terminal in communication with the called terminal. This setting in communication occurs especially when, having taken knowledge of the list of events, a communication is still desired.
Avantageusement, l'envoi au terminal appelant de la liste d'événements est effectué par message vocal. Le cas échéant, un message texte est également adressé au terminal appelant.Advantageously, the sending to the calling terminal of the list of events is carried out by voice message. If necessary, a text message is also sent to the calling terminal.
Dans une mise en œuvre avantageuse, le terminal appelé comprend un centre d'appel d'urgences, la requête de mise en communication comprenant une requête d'urgence. Le procédé permet ainsi de limiter l'encombrement du réseau. Dans une mise en œuvre avantageuse, le terminal appelant est mobile, les données de localisation comprenant des données de géolocalisation obtenues notamment par identification de la cellule ou du secteur, estimation des temps d'arrivée (TOA Time of Arrivai, EOTD Enhanced Observed Time Différence TDOA), estimation des angles d'arrivée ou angles d'incidence (AOA). Le procédé permet ainsi de limiter l'encombrement des réseaux de téléphonie mobile.In an advantageous implementation, the called terminal includes an emergency call center, the call setup request comprising an emergency request. The method thus makes it possible to limit the congestion of the network. In an advantageous implementation, the calling terminal is mobile, the location data comprising geolocation data obtained in particular by identification of the cell or sector, estimation of arrival times (TOA Time of Arrival, EOTD Enhanced Observed Time Difference TDOA), estimated angles of arrival or angles of incidence (AOA). The method thus makes it possible to limit the congestion of the mobile telephone networks.
Le terminal appelant est un mobile, notamment GSM ou UMTS, pourvu d'un récepteur GNSS tel que GPS, GLONASS ou GALI LEO, les données de localisation du terminal appelant comprenant des données de géolocalisation.The calling terminal is a mobile, in particular GSM or UMTS, provided with a GNSS receiver such as GPS, GLONASS or GALI LEO, the location data of the calling terminal including geolocation data.
L'invention se rapporte, selon un deuxième aspect, à un serveur muni de moyens pour recevoir une requête de mise en communication en provenance d'un terminal appelant, ce serveur comprenant en outre des moyens d'identification des données de localisation du terminal appelant, caractérisé en ce q u'il comprend en outre et des moyens pour rétablissement d'une liste d'événements survenus, depuis un temps prédéterminé, dans un périmètre correspondant à l'emplacement estimé du terminal appelant ; et des moyens d'envoi au terminal appelant de cette liste d'événements.According to a second aspect, the invention relates to a server provided with means for receiving a call-up request from a calling terminal, this server further comprising means for identifying the location data of the calling terminal. , characterized in that it further comprises and means for restoring a list of events occurring, for a predetermined time, in a perimeter corresponding to the estimated location the calling terminal; and means for sending to the calling terminal of this list of events.
Dans une mise en œuvre, le serveur comprend des moyens de synthèse vocale pour l'établissement de ladite liste d'événements. L'invention se rapporte, selon un troisième aspect, à un réseau de télécommunications comprenant un serveur tel que présenté ci dessus, ainsi qu'un centre d 'appel et une base de données reliés au serveur, caractérisé en ce que la base de données comprend la liste des événements signalés au centre d'appel. L'invention se rapporte, selon un quatrième aspect, à un produit programme d'ordinateur comprenant des instructions pour analyser une req uête de mise en communication en provenance d'un terminal appelant et à destination d'un terminal appelé, ce produit comprenant :In one implementation, the server comprises voice synthesis means for establishing said list of events. The invention relates, in a third aspect, to a telecommunications network comprising a server as presented above, as well as a call center and a database connected to the server, characterized in that the database includes the list of events reported to the call center. According to a fourth aspect, the invention relates to a computer program product comprising instructions for analyzing a call setup request from a calling terminal to a called terminal, which product comprises:
- des instructions pour détecter dans la requête des informations de localisation du terminal appelant ;instructions for detecting in the query location information of the calling terminal;
- des instructions pour extraire d'une base de données une liste d'événements survenus depuis un temps prédéterminé dans un périmètre correspondant à la localisation du terminal appelant ;instructions for extracting from a database a list of events that have occurred for a predetermined time in a perimeter corresponding to the location of the calling terminal;
- des instructions pour la transformation de ladite liste d'événements en un message adressable au terminal appelant.instructions for transforming said list of events into a message addressable to the calling terminal.
Dans une mise en oeuvre, le produit programme d'ordinateur comprend en outre des instructions pour l'entrée dans la base de données d'un nouvel événement, par génération d'interfaces de saisie prédéfinies en fonction d'un type d'événement identifié par l'opérateur. D'autres objets et avantages de l'invention apparaîtront à la lumière de la description faite ci-après de modes de réalisationIn one implementation, the computer program product further comprises instructions for entry into the database of a new event, by generating predefined input interfaces according to an identified event type. by the operator. Other objects and advantages of the invention will become apparent in the light of the following description of embodiments
Dans une première étape d'un mode actuellement préféré de mise en œuvre de l'invention, une identification de la langue de l'appelant est réalisée en analysant le numéro du téléphone mobile appelant. En effet, le numéro appelant est présenté au serveur sous sa forme canonique qui permet ainsi d'identifier le pays d'origine de l'abonnement téléphonique. Par exemple q uand le serveur reçoit un appel dont l'identifiant du demandeur est +33 suivi de 9 chiffres on en déduit qu'il s'agit d'un terminal dont l'utilisateur est très probablement Français. Si l'identifiant du demandeur débute par +49 suivi de plusieurs chiffres on en déduit qu'il s'agit très probablement d'un Allemand. L'analyse des premiers chiffres permet ainsi d'estimer la langue de l'appelant.In a first step of a currently preferred mode of implementation of the invention, an identification of the language of the caller is performed by analyzing the number of the calling mobile phone. Indeed, the calling number is presented to the server in its canonical form which thus makes it possible to identify the country of origin of the telephone subscription. For example, when the server receives a call whose caller ID is +33 followed by 9 digits, we deduce that it is a terminal whose user is most likely French. If the identifier of the applicant starts with +49 followed by several digits, we deduce that it is most likely a German. The analysis of the first digits thus makes it possible to estimate the language of the caller.
Dans un autre mode de réalisation de cette première étape, le serveur adresse un message vocal à l'appelant par exemple une question courte à réponse simple dans les langues les plus fréquemment rencontrées pour le territoire couvert par le centre d'appel. Lorsque l'appelant n'a apparemment reconnu aucune des langues proposées, le serveur établit une communication entre l'appelant et un groupe de traducteurs. Ainsi qu'il apparaîtra plus complètement dans la suite de cette description, lorsque la langue de l'appelant a été identifiée, ainsi que sa localisation, le serveur est en mesure de lui adresser un message spécifique le dissuadant de rester en ligne si son appel concerne un événement connu du centre d'appel et correspondant à la localisation de l'appelant et qu'il n'est pas nécessaire de mettre en relation l'appelant et un opérateur du centre d'appel.In another embodiment of this first step, the server sends a voice message to the caller for example a short answer simple question in the languages most frequently encountered for the territory covered by the call center. When the caller apparently did not recognize any of the proposed languages, the server established a call between the caller and a group of translators. As will appear more fully later in this description, when the language of the caller has been identified, as well as its location, the server is able to send him a specific message discouraging him to remain online if his call relates to a call center known event and corresponding to the location of the caller and it is not necessary to connect the caller and a call center operator.
Si l'appelant reste en ligne, ou si l'appelant n'a pas reçu de message de dissuasion, une communication est établie entre l'appelant et un opérateur du centre d'appel. Lorsqu'il apparaît que l'appelant cherche à relater un événement encore inconnu du centre d'appel, un opérateur va collationner les données relatives à cet événement à l'aide d'un canevas de questions précises.If the caller remains online, or if the caller has not received a deterrent message, a call is established between the caller and a call center operator. When it appears that the caller is trying to relate an event still unknown to the call center, an operator will collate the data relating to this event using a pattern of specific questions.
L'opérateur collationnant les données est avantageusement déterminé en fonction du profil de l'appelant. L'opérateur aura ainsi avantageusement une bonne pratique personnelle de la langue de l'appelant.The operator collating the data is advantageously determined according to the profile of the caller. The operator will thus advantageously have a good personal practice of the language of the caller.
Si la localisation de l'appelant correspond à une zone déjà connue d'un opérateur, le serveur oriente l'appel vers cet opérateur. Avantageusement, ce canevas apparaîtra sur l'écran de l'opérateur de sorte à lui permettre d'enregistrer les données dans un ordre quelconque. Ainsi, lorsque l'appelant s'exprime de manière embrouillée, du fait du stress par exemple, l'opérateur pourra enregistrer les éléments communiqués par l'appelant, sans avoir à l'interrompre ou lui faire perdre le fil de ses idées.If the location of the caller corresponds to an area already known to an operator, the server directs the call to this operator. Advantageously, this pattern will appear on the screen of the operator so as to enable him to record the data in any order. Thus, when the caller speaks in a scrambled manner, because of stress for example, the operator can record the elements communicated by the caller, without having to interrupt or lose the thread of his ideas.
Avantageusement, un programme d'ordinateur assurera la cohérence des données saisies par l'opérateur. Avantageusement, de sorte à assurer une grande pertinence, un programme d'ordinateur configure le canevas suivant la nature de l'événement relaté par l'appelant (krach financier, attentats, catastrophes naturelles telles que par exemple inondations, incendies, accidents industriels, crash d'avion)Advantageously, a computer program will ensure the consistency of the data entered by the operator. Advantageously, in order to ensure a high level of relevance, a computer program configures the pattern according to the nature of the event recounted by the appellant (financial crash, attacks, natural disasters such as, for example, floods, fires, industrial accidents, crashes). airplane)
Avantageusement, pour un type d'événement donné, le canevas à remplir par l'opérateur rassemble les cas de figures les plus fréquents, de sorte que l'opérateur peut concentrer toute son attention à l'écoute de l'appelant. Le canevas de questions apparaît avantageusement dans la langue de communication entre l'appelant et le centre d'appel. En cas de besoins, un programme d'ordinateur peut ensuite assurer une traduction automatique de ces données dans une autre langue de travail.Advantageously, for a given type of event, the pattern to be completed by the operator brings together the most frequent cases, so that the operator can concentrate all his attention on listening to the caller. The pattern of questions appears advantageously in the language of communication between the caller and the call center. If needed, a computer program can then provide automatic translation of this data into another working language.
Un exemple schématique d'une partie de canevas pour un centre d'appel de secours, recevant un appel signalant un incendie est donné ci dessous :A schematic example of a pattern portion for a rescue call center receiving a call signaling a fire is given below:
Lieu de l'événementLocation of the event
Description du lieuDescription of the place
Habitation BureauOffice Housing
Ecole Entrepôt Usine Chantier GarageSchool Warehouse Factory Building Garage
Voie publique Centre de loisirs Terrain vague Autre Description détaillée du lieu de l'événementPublic Road Recreation Center Vacant Land Other Detailed Description of Event Location
Escalier Ascenseur CaveStaircase Lift Cellar
Local technique ComblesTechnical room Attics
Transformateur Un programme d'ordinateur, en fonction des données saisies par l'opérateur pour l'événement signalé, détermine le périmètre dans lequel peuvent se trouver les acteurs ou témoins de cet événement.Transformer A computer program, based on the data entered by the operator for the reported event, determines the perimeter in which the actors or witnesses of this event may be.
Un opérateur (par exemple celui ayant saisi les données relatives à l'événement) ou un dispositif de synthèse vocale élabore un message vocal destiné à tout nouvel appelant situé dans ledit périmètre. Dans le cas d'un centre d'appel de secours, ce message comprend par exemple une expression du type suivant : « si votre appel concerne [résumé de l'événement connu du centre d'appel] et que vous n 'avez pas vous- même besoin d'assistance, merci de raccrocher, d'autres personnes pouvant avoir besoin de nous contacter » . En variante, le message peut comprendre une expression du type suivant : « si votre appel ne concerne pas [résumé de l'événement connu du centre d'appel] merci de [taper sur telle touche du téléphone ou dire non après le signal suivant] ».An operator (for example, the one having entered the data relating to the event) or a speech synthesis device prepares a voice message intended for any new caller located in said perimeter. In the case of an emergency call center, this message includes, for example, an expression of the following type: "if your call concerns [summary of the event known to the call center] and you do not have - same need of assistance, thank you to hang up, other people who may need to contact us ». Alternatively, the message may include an expression of the following type: "If your call does not concern [summary of known call center event] please [type on this key on the phone or say no after the next signal] ".
Le message vocal est avantageusement actualisé. Il n'est envoyé aux nouveaux appelants du périmètre considéré, avec mise à jour, que pendant un temps prédéterminé. Avantageusement, le message est passé en boucle jusqu'à réponse d'un opérateur du centre d'appel. La liste des événements correspondants au lieu d'où est émis l'appel, mémorisée dans la base de données, est utilisée pour élaborer un message vocal au moyen d'un système de synthèse vocale. Le message vocal comporte au moins une partie prédéterminée et au moins un complément d'information résultant de la liste des événements. La liste des événements contenant au moins un événement. La partie prédéterminée du message pouvant être le résultat de l'enregistrement d'une voix humaine ou le résultat de la synthèse vocale d'un texte mémorisé dans la base de données. Bien sûr pour un lieu de sinistre en fonction des événements la liste peut varier -cas des sur-accidents-)The voice message is advantageously updated. It is sent to the new callers of the considered perimeter, with update, only for a predetermined time. Advantageously, the message is looped until response from a call center operator. The list of events corresponding to the location from which the call is made, stored in the database, is used to develop a voice message using a voice synthesis system. The voice message comprises at least a predetermined portion and at least one additional information resulting from the list of events. The list of events containing at least one event. The predetermined part of the message can be the result of the recording of a human voice or the result of the speech synthesis of a text stored in the database. Of course for a place of disaster according to the events the list can vary -nas of over-accidents-
La télécommunication entre le terminal de l'appelant et le centre d'appel comprend quatre phases : une première phase, dite d'identification, de localisation et d'information, dans laquelle l'appel en provenance du terminal appelant est présenté au centre d'appel, c'est au cours de cette phase q ue sont déterminées la langue utilisée par l'appelant et la localisation du lieu d'appel et que le message vocal pertinent est adressé au terminal appelant ; une deuxième phase, dans laq uelle l'appel est acheminé vers un opérateur, le choix de l'opérateur peut être réalisé en fonction de critères tels que la ou les langues parlées, l'événement ou encore des compétences particulières ; une troisième phase, dite de communication, dans laquelle l'appelant et l'opérateur sont mis en relation; une quatrième phase, dite de terminaison, dans laquelle la communication entre les deux terminaux est coupée.The telecommunication between the caller's terminal and the call center comprises four phases: a first phase, called identification, location and information phase, in which the call from the calling terminal is presented to the call center. call, it is during this phase that the language used by the caller and the location of the place are determined. call and that the relevant voice message is addressed to the calling terminal; a second phase, in which the call is routed to an operator, the choice of the operator can be made according to criteria such as the language or languages spoken, the event or special skills; a third phase, called communication phase, in which the caller and the operator are connected; a fourth phase, called termination, in which the communication between the two terminals is cut off.
La locaiisation du terminal appelant peut être assurée de diverses manières, en fonction du type de terminal (téléphone fixe, téléphone mobile, PDA).Locating the calling terminal can be provided in various ways, depending on the type of terminal (landline, mobile phone, PDA).
Dans le cas des téléphones mobiles, diverses techniques ont été décrites pour la détermination de la position géographique. Par exemple, le document US 5508707 décrit un procédé comprenant les étapes suivantes : déterminer les contours des différentes zones de couverture des stations de base qui peuvent recevoir l'émission d'un appel d'une station mobile, de manière à définir une première aire frontière qui décrit la position de la station mobile ; déterminer quels lobes dans le cas d'un système AMRE (ou SDMA pour Space Division Multiple Access) ou quels filtres (dans le cas d'un système non AMRE) de différentes stations de base, communiquent avec la station mobile, de sorte à définir une seconde aire frontière décrivant la position de cette station mobile ; déterminer la zone d'intersection des premières et secondes ailes frontière, de sorte à obtenir une information relativement précise sur la position de la station mobile.In the case of mobile phones, various techniques have been described for the determination of geographical position. For example, the document US 5508707 describes a method comprising the following steps: determining the contours of the different coverage areas of the base stations that can receive the transmission of a call from a mobile station, so as to define a first area boundary that describes the position of the mobile station; determine which lobes in the case of an AMRE system (or SDMA for Space Division Multiple Access) or which filters (in the case of a non-AMRE system) of different base stations, communicate with the mobile station, so as to define a second boundary area describing the position of this mobile station; determining the intersection area of the first and second boundary wings, so as to obtain relatively accurate information on the position of the mobile station.
Le serveur du centre d'appel reçoit les informations de localisation du téléphone mobile de l'appelant, comprenant la technique mise en œuvre pour cette localisation, le serveur peut ainsi s'assurer que la position du terminal appelant correspond, compte tenu de la précision de la technique de localisation , à la position éventuellement indiquée par l'appelant lui-même. La précision de localisation d'un terminal mobile dépend de nombreux facteurs. Elle dépend en premier lieu de la technique de localisation mise en œuvre. Elle dépend aussi de l'état des infrastructures terrestres impliquées dans la localisation, ces infrastructures pouvant être dégradées lors de catastrophes naturelles. La précision de localisation dépend également de l'environnement immédiat du terminal appelant.The call center server receives the location information of the mobile phone of the caller, including the technique implemented for this location, the server can thus ensure that the position of the calling terminal corresponds, given the accuracy of the locating technique, at the position possibly indicated by the appellant himself. The location accuracy of a mobile terminal depends on many factors. It depends in the first place on the localization technique used. It also depends on the state of the terrestrial infrastructures involved in the localization, these infrastructures being able to be degraded during natural disasters. Location accuracy also depends on the immediate environment of the calling terminal.
La position peut être obtenue par l'identification de la celluleThe position can be obtained by identifying the cell
(CeII ID) ou du secteur, au moyen d'informations disponibles sur la station de base (BTS Base Transceiver Station) ou du secteur qui assure le service. La précision de localisation est alors moyenne dans les zones peu couvertes par les stations de base.(CeII ID) or from the area, using information available on the base station (BTS Base Transceiver Station) or the area providing the service. Location accuracy is then average in areas with little coverage by base stations.
La position d 'un téléphone mobile peut être obten ue avec une plus grande précision par triangulation , lorsque plusieurs stations de base captent l'appel émanant du portable considéré. Les signaux employés pour la triangulation peuvent être les mesures RXLEVThe position of a mobile phone can be obtained more accurately by triangulation, when several base stations pick up the call from the particular mobile. The signals used for triangulation may be RXLEV measurements
(Réception Level) qui représentent les puissances, mesurées par le téléphone mobile, des signaux provenant de certaines stations de base.(Reception Level) which represent the powers, measured by the mobile phone, signals from some base stations.
Ce relevé est codé sur 6bits et représente les puissances de -1 10 dBm à -48 dBm par pas de I dBm. Ce paramètre est employé pour l'évaluation de la qualité de la liaison MS-BS et pour le conduire le cas échéant au changement de cellule (handover).This reading is coded on 6 bits and represents the powers of -1 10 dBm at -48 dBm in steps of I dBm. This parameter is used to evaluate the quality of the MS-BS link and to drive it to the handover if necessary.
Selon une première mise en œuvre de triangulation, l'estimation des temps d'arrivée (TOA Time of Arrivai, EOTD Enhanced Observed Time Différence TDOA) est conduite sur les signaux de la liaison montante (émis par le mobile et reçus au niveau des BS) ou sur les signaux de la liaison descendante (signaux destinés au mobile).According to a first implementation of triangulation, the estimation of the arrival times (TOA Time of Arrival, EOTD Enhanced Observed Time Difference TDOA) is carried out on the signals of the uplink (emitted by the mobile and received at the level of the BS ) or downlink signals (mobile signals).
Selon une deuxième mise en œuvre de triangulation, dite estimation des angles d'arrivée ou angles d'incidence (AOA), chaque AOA estimé définit une demi droite de sommet la station de base concernée, sur laquelle se trouve le téléphone mobile. Deux mesures de AOA sont donc nécessaires pour localiser le mobile.According to a second implementation of triangulation, called estimation of angles of arrival or angles of incidence (AOA), each estimated AOA defines a half right vertex the concerned base station, on which is located the mobile phone. Two measurements of AOA are therefore necessary to locate the mobile.
En variante, en utilisant simultanément l'estimation des angles et des retards, la localisation de téléphone mobile ne nécessite que l'écoute d'une seule BS.Alternatively, by simultaneously using the estimation of angles and delays, the mobile phone location only requires listening to a single BS.
La position d 'un téléphone mobile peut aussi être obtenue pour les GSM ( Global System for Mobile communications) pourvus d'u n récepteur GNSS {Global Navigation Satellite System) tel qu'un récepteur du type GPS (Global Positioning System), GLONASS ou GALILEO par lequel le téléphone mobile capte des émissions en provenance de satellites pour connaître sa position . Cette technique de localisation utilise une pluralité de satellites émettant en permanence un signal daté pseudo aléatoire modulé en phase. Dans une première étape, dite d'acq uisition, le récepteur détermine des codes pseudo aléatoires qui modulent les signaux provenant de satellites, dits « en vue », appartenant à une constellation de satellites de positionnement (par exemple GPS) et rapportés à un temps de référence, généralement appelé temps système. Dans cette étape d'acquisition, les signaux reçus des satellites « en vue » sont comparés à des répliques de signaux résultant d'hypothèses sur le temps système et sur la fréquence de cadencement des satellites, afin d'en déduire les codes pseudo-aléatoires qui modulent les signaux reçus. Pour synchroniser l'horloge de cadencement et la fréquence du terminal mobile sur l'horloge et la fréquence de chaq ue satellite « en vue », on effectue habituellement des mesures de corrélation reposant sur des couples d'hypothèses temporelle et fréquentielle. Le récepteur retarde le début de cette émission de code jusqu'à ce que son signal se superpose avec celui provenant du satellite. La valeur de ce retard est ainsi le temps mis par le signal pour se propager du satellite jusqu'à l'utilisateur. Comme l'horloge du récepteur GPS n'est jamais totalement synchronisée sur celle des satellites, le récepteur va devoir constamment ajuster son horloge par approximations successives afin de parvenir à la corrélation maximale. L'acquisition d u signal nécessite donc un balayage en temps important par le récepteur. L'horloge du récepteur est affectée d'un biais : elle n'est pas totalement synchrone du système GPS, les horloges atomiques des satellites GPS ayant un niveau de précision bien supérieur à celui du récepteur GPS. Ce biais d'horloge (différence de temps entré l'horloge du récepteur et l'horloge des satellites) peut atteindre plusieurs secondes. Il entraîne une erreur de mesure de temps de propagation des signaux GPS et donc une erreur sur les distances satellite/récepteur. Chaq ue mesure de temps de propagation représente le rayon d'une sphère centrée sur un satellite particulier, le récepteur étant situé sur cette sphère. Avec deux mesures de distance, la position d'un récepteur est sur un cercle formé par l'intersection de deux sphères. Une troisième mesure simultanée réduit l'intersection à deux points, dont un est très éloigné dans l'espace et est aisément isolé.The position of a mobile phone can also be obtained for GSM (Global System for Mobile Communications) equipped with a Global Navigation Satellite System (GNSS) receiver such as a Global Positioning System (GPS) receiver, GLONASS or GALILEO by which the mobile phone picks up programs from satellites to know its position. This location technique uses a plurality of satellites continuously transmitting a phase modulated pseudo-random signal. In a first so-called acquisition step, the receiver determines pseudo-random codes which modulate the signals coming from satellites, called "in view", belonging to a constellation of positioning satellites (for example GPS) and related to a time. reference, usually called system time. In this acquisition step, the signals received from the satellites "in view" are compared to replicas of signals resulting from hypotheses on the system time and on the satellite timing frequency, in order to deduce from them the pseudo-random codes. which modulate the received signals. To synchronize the clock and the frequency of the mobile terminal on the clock and the frequency of each satellite "in view", correlation measurements are usually made based on pairs of time and frequency assumptions. The receiver delays the start of this code transmission until its signal is superimposed with that coming from the satellite. The value of this delay is thus the time taken by the signal to propagate from the satellite to the user. Since the clock of the GPS receiver is never fully synchronized with that of the satellites, the receiver will have to constantly adjust its clock by successive approximations in order to reach the maximum correlation. The acquisition of the signal therefore requires a significant time scan by the receiver. The clock of the receiver is affected by a bias: it is not totally synchronous with the GPS system, the atomic clocks of the GPS satellites having a level of precision much higher than that of the GPS receiver. This clock bias (time difference between the receiver clock and the satellite clock) can reach several seconds. It causes an error in the measurement of the GPS signal propagation time and therefore an error in the satellite / receiver distances. Each time-of-flight measure represents the radius of a sphere centered on a particular satellite, the receiver being located on that sphere. With two distance measurements, the position of a receiver is on a formed circle by the intersection of two spheres. A third simultaneous measurement reduces the two-point intersection, one of which is far away in space and is easily isolated.
Dans un mode de fonctionnement Assited-GPS, le calcul de position met en oeuvre un dispositif mobile recevant et traitant des signaux GNSS et communiquant avec un réseau cellulaire, et un serveur de données d'assistance en charge de diffuser des données permettant d'aider les traitements des signaux GNSS réalisés dans le mobile. Dans une mise en œuvre dite « MS-Assisted » , le serveur diffuse des données d'aide à la mesure de pseudo distances sur le signaux GPS, ces mesures étant alors renvoyées vers le serveur qui calcule la position.In an Assited-GPS operating mode, the position calculation implements a mobile device receiving and processing GNSS signals and communicating with a cellular network, and a support data server in charge of broadcasting data to assist the processing of GNSS signals made in the mobile. In an implementation called "MS-Assisted", the server broadcasts help data to measure pseudo-distances on the GPS signals, these measurements then being returned to the server that calculates the position.
Afin d'améliorer la précision des positions estimées, les constellations de satellites de positionnement sont avantageusement couplées à des systèmes dits d'augmentation, de type SBAS (pour Satellite Based Augmentation System), comprenant des stations terrestres et de satellites géostationnaires (comme par exemple IMMARSAT et ARTEMIS). Des messages SBAS permettent une correction des données fournies par les satellites de positionnement, plus particulièrement des erreurs de synchronisation temporelle entre satellites de navigation et erreurs d'éphémérides, erreurs de propagation.In order to improve the accuracy of the estimated positions, the constellations of positioning satellites are advantageously coupled to so-called augmentation systems, of the SBAS (Satellite Based Augmentation System) type, comprising earth stations and geostationary satellites (for example IMMARSAT and ARTEMIS). SBAS messages allow a correction of the data provided by the positioning satellites, more particularly time synchronization errors between navigation satellites and ephemeris errors, propagation errors.
Le mode de communication des informations de localisation varie selon la technologie de localisation utilisée. Si la localisation est réalisée par un récepteur de type GPS intégré au terminal appelant, l'action d'appeler un numéro d'urgence est interprétée dans le terminal appelant qui insère les données de localisation (longitude, latitude, altitude) dans un champ particulier du message de demande d'établissement d'appel. Ce message d'établissement d'appel est dirigé vers le centre d'appel qui reçoit entre autres le numéro du terminal appelant et les coordonnées géographiques du lieu de l'appel. Si la localisation est réalisée par le réseau de communication radio, tout appel à destination d'un centre d'appel de secours sera traité d'une manière particulière afin d'insérer dans la demande d'appel aboutissant au centre de secours les information de localisation de l'appel.The mode of communication of the location information varies according to the location technology used. If the location is performed by a GPS receiver integrated in the calling terminal, the action of calling an emergency number is interpreted in the calling terminal which inserts the location data (longitude, latitude, altitude) in a particular field the call setup request message. This call setup message is directed to the call center which receives inter alia the number of the calling terminal and the geographical coordinates of the place of the call. If the location is realized by the radio communication network, any call to a rescue call center will be treated in a particular way so as to insert in the call request terminating at the emergency center the information of location of the call.
La mise en œuvre de l'invention offre de nombreux avantages. En particulier, la durée des appels redondants est réduite par la mise en œuvre de l'invention, libérant des lignes sans monopoliser le temps d'un opérateur. Les personnes témoins ou victimes d'événements encore inconnus d'un centre d'appel pourront ainsi joindre plus aisément ce centre d'appel. Les risques de panique ou d'affolement des témoins d'un événement sont amoindris par la diffusion à tout The implementation of the invention offers many advantages. In particular, the duration of the redundant calls is reduced by the implementation of the invention, releasing lines without monopolizing the time of an operator. Witnesses or victims of events still unknown to a call center will be able to reach this call center more easily. The risks of panic or panic of the witnesses of an event are diminished by the diffusion to all

Claims

REVENDICATIONS
1. Procédé de communication entre un terminal appelant et un terminal appelé, ce procédé comprenant une étape de réception par un serveur d'une requête de mise en communication en provenance du terminal appelant, cette requête comprenant des données de localisation du terminal appelant, ce procédé étant caractérisé en ce qu'il comprend : rétablissement d'une liste d'événements survenus, depuis un temps prédéterminé, dans un périmètre correspondant à l'emplacement estimé du terminal appelant ; l'envoi au terminal appelant de cette liste d'événements.A method of communication between a calling terminal and a called terminal, said method comprising a step of receiving by a server a call-up request from the calling terminal, said request comprising location data of the calling terminal; characterized in that it comprises: restoring a list of events occurring, for a predetermined time, in a perimeter corresponding to the estimated location of the calling terminal; sending to the calling terminal of this list of events.
2. Procédé de communication selon la revendication 1 , caractérisé en ce qu'il comprend, après l'envoi au terminal appelant de la liste d'événements, la mise en communication du terminal appelant avec le terminal appelé.2. A communication method according to claim 1, characterized in that it comprises, after sending to the calling terminal of the list of events, setting communication of the calling terminal with the called terminal.
3. Procédé de communication selon l'une quelconque des revendications précédentes, caractérisé en ce que l'envoi au terminal appelant de la liste d'événements est effectué par message vocal.3. Communication method according to any one of the preceding claims, characterized in that the sending to the calling terminal of the list of events is done by voice message.
4. Procédé de communication selon l'une quelconque des revendications précédentes, caractérisé en ce que le terminal appelé comprend un centre d'appel d'urgences, la requête de mise en communication comprenant une requête d'urgence.4. Communication method according to any one of the preceding claims, characterized in that the called terminal comprises an emergency call center, the call setup request comprising an emergency request.
5. Procédé de communication selon l'une quelconq ue des revendications précédentes, caractérisé en ce que le terminal appelant est mobile, les données de localisation comprenant des données de géolocalisation obtenues notamment par identification de la cellule ou du secteur, estimation des temps d 'arrivée (TOA Time of Arrivai, EOTD Enhanced Observed Time Différence TDOA), estimation des angles d'arrivée ou angles d'incidence (AOA).5. Communication method according to any one of the preceding claims, characterized in that the calling terminal is mobile, the location data including geolocation data obtained in particular by identification of the cell or sector, estimation of the times of arrival (TOA Time of Arrival, EOTD Enhanced Observed Time Difference TDOA), estimation of angles of arrival or angles of incidence (AOA).
6. Procédé de communication selon l'une quelconq ue des revendications 1 à 4, caractérisé en ce que le terminal appelant est un mobile, notamment GSM ou UMTS, pourvu d'un récepteur GNSS tel que GPS, GLONASS ou GALILEO, les données de localisation du terminal appelant comprenant des données de géolocalisation.6. The communication method according to any one of claims 1 to 4, characterized in that the calling terminal is a mobile, in particular GSM or UMTS, provided with a GNSS receiver such as GPS, GLONASS or GALILEO, the location data of the calling terminal including geolocation data.
7. Serveur muni de moyens pour recevoir une requête de mise en communication en provenance d'un terminal appelant, ce serveur comprenant en outre des moyens d'identification des données de localisation du terminal appelant, caractérisé en ce qu'il comprend en outre et des moyens pour l'établissement d'une liste d'événements survenus, depuis un temps prédéterminé, dans u n périmètre correspondant à l'emplacement estimé du terminal appelant ; et des moyens d'envoi au terminal appelant de cette liste d'événements.A server provided with means for receiving a call-up request from a calling terminal, said server further comprising means for identifying the location data of the calling terminal, characterized in that it further comprises and means for establishing a list of events occurring, for a predetermined time, in a perimeter corresponding to the estimated location of the calling terminal; and means for sending to the calling terminal of this list of events.
8. Serveur selon la revendication 7, caractérisé en ce qu'il comprend des moyens de synthèse vocale pour l'établissement de ladite liste d'événements.8. Server according to claim 7, characterized in that it comprises voice synthesis means for establishing said list of events.
9. Réseau de télécommunications comprenant un serveur selon la revendication 7 ou 8, ainsi qu'un centre d'appel et une base de données reliés au serveur, caractérisé en ce que la base de données comprend la liste des événements signalés au centre d'appel.9. Telecommunications network comprising a server according to claim 7 or 8, and a call center and a database connected to the server, characterized in that the database comprises the list of events reported in the center of call.
10. Produit programme d'ordinateur comprenant des instructions pour analyser une requête de mise en communication en provenance d'un terminal appelant et à destination d'un terminal appelé, ce produit étant caractérisé en ce qu'il comprend : des instructions pour détecter dans la requête des informations de localisation du terminal appelant ; des instructions pour extraire d'une base de données une liste d'événements survenus depuis un temps prédéterminé dans un périmètre correspondant à la localisation du terminal appelant ; des instructions pour la transformation de ladite liste d'événements en un message adressable au terminal appelant.A computer program product comprising instructions for analyzing a call-up request from a calling terminal to a called terminal, which product is characterized by comprising: instructions for detecting the query of the location information of the calling terminal; instructions for extracting from a database a list of events occurring for a predetermined time in a perimeter corresponding to the location of the calling terminal; instructions for transforming said event list into a message addressable to the calling terminal.
1 1 . Produit programme d'ordinateur selon la revendication 10, caractérisé en ce qu'il comprend en outre des instructions pour l'entrée dans la base de données d'un nouvel événement, par génération d'interfaces de saisie prédéfinies en fonction d'un type d'événement identifié par l'opérateur. 1 1. Computer program product according to claim 10, characterized in that it further comprises instructions for the input in the database of a new event, by generating predefined input interfaces according to an event type identified by the operator.
PCT/FR2006/050664 2006-07-03 2006-07-03 Method of communication between terminals with the despatching of a list of events dependent on the location of the calling terminal, server, network and computer program for such communication WO2008003840A1 (en)

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PCT/FR2006/050664 WO2008003840A1 (en) 2006-07-03 2006-07-03 Method of communication between terminals with the despatching of a list of events dependent on the location of the calling terminal, server, network and computer program for such communication
EP06779005A EP2041951A1 (en) 2006-07-03 2006-07-03 Method of communication between terminals with the despatching of a list of events dependent on the location of the calling terminal, server, network and computer program for such communication

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