FR2897219A1 - Local communication device for e.g. mobile telephone, has controller interacts with beacon for storing obtained code word and actuating decision mechanism relating to message spontaneous transmission - Google Patents

Abstract

The device has a wireless interface (9) and an access interface (25) for communicating with mobile terminals (11) and a controller (3) for transmitting a message of the mobile terminal (11). A beacon including a handler (19) and an antenna (21) interacts with a radio frequency identification tag (17) for obtaining a code word. The controller interacts with the beacon for storing the obtained code word and actuating a decision mechanism relating to a message spontaneous transmission, where a decision for transmitting a message depends on the code word.

Description

INRIA84.FRD.wpd 1 Selective local communication device based on

  The invention relates to communications or local contextual telecommunications, that is to say on-site, depending on the context.

  Proposals to this effect have been made in particular in the patent specification WO 01/89189 A2 of the Applicant. The context is defined using "mobile stations", implantable at will in different places of a given place. The cooperation of these stations with stations such as mobile phones (or mobiles) makes it possible to recognize the context, and thereby deliver a message accordingly, from a contextual service provider. We will come back to it in more detail below.

  It is desirable to find a solution as universal as possible, while avoiding the user being overwhelmed by unwanted messages or unsolicited services, as will be seen.

  The present invention improves the situation. It proposes a local communication device, of the type comprising a station having a mode of communication with mobile terminals and a controller capable of sending a message to one or more mobile terminals. The device according to the invention further comprises a beacon capable of interacting with at least one passive portable object in order to acquire at least one code word from such a portable object. According to the invention, the controller is arranged to interact with the beacon in order to memorize, at least temporarily, the acquired code word, then, following such an interaction, to implement a decision mechanism relating to the spontaneous transmission of a message, in which the decision to send a message, its content and / or its destination address at least partially depend on the stored codeword. Other features and advantages of the invention will be apparent from the following detailed description and the accompanying drawings, in which:

  FIG. 1A is a diagram illustrating an exemplary embodiment of the device according to the invention, FIG. 1B is a diagram illustrating a detail of the device of FIG. 1A according to an alternative embodiment, FIG. 2A is a diagram illustrating a label for the device of FIG. 1A according to one embodiment of the invention; FIG. 2B is a diagram illustrating a label for the device of FIG. 1A according to a different embodiment of the invention,

  FIG. 3 is a flowchart illustrating the operation of the device of FIG. 1A in one embodiment of the invention, FIGS. 4A to 4D are diagrams illustrating various arrangements of the device of FIG. 1A,

  FIG. 5 is a diagram illustrating an exemplary embodiment of a beacon for the device according to the invention in a particular application; FIG. 6 is a diagram illustrating an exemplary embodiment of a beacon for the device according to the invention; invention in another particular application,

  FIG. 7 is a flowchart illustrating the operation of the device according to the invention in the particular applications of FIGS. 5 and 6.

  The drawings contain elements of a certain character. They can therefore not only serve to better understand the present invention, but also contribute to its definition, if any. Presentation

  This is to provide a "contextual service", which provides the contextual delivery of information on a mobile terminal. Contextual delivery means the capacity to selectively deliver, without any other request from the user than the choice of information, information relating to the environment perceived by the user: objects or persons nearby, the site / the building / room where the user is located, in particular. The information to be delivered to the user can be of different natures: text message, picture, sound, video, this possibly in a continuous stream, composite document such as a web page, or again a hyperlink (pointer) to a document (Web or Wap for example), not limitation. In the expression "contextual delivery", the notion of "context" represents the local physical environment, as opposed to the context provided by the mobile terminal itself, because of its communication functionalities. In particular, the different communication possibilities offered generally by the mobile terminal itself are not considered as "contextual information".

  Several general approaches can define a context.

  A first approach involves a prior location. It consists in delivering the contextual information after determining the position of the user equipped with the mobile terminal. A localization infrastructure, such as GPS, allows it, but this method is quite heavy, and not universal, because few mobile terminals are equipped with such a location function. It is also known that the communication network offered to the mobile terminal can provide an approximation of the position of the user with his terminal, by triangulating according to the positions of the base stations that "see" the mobile terminal. But the position of the user is determinable only with a widely variable approximation depending on the location: in fact, unlike the GPS for example, the infrastructure is not specifically designed for positioning, since the The arrangement of the base stations is determined essentially in order to ensure good connectivity to the users of the network. This other method, also non-universal, is also inadequate where accurate and reliable positioning is needed.

  A different approach, which can be described as "physical", is described in the patent specification WO 01/89189 A2, already cited, of the Applicant. There is a local communication device, comprising at least one station having a communication mode with mobile terminals. According to this approach, it is sought to define "zones" associated with each type of contextual information directly by a particular geometrical arrangement of physical objects. In WO 01/89189 A2, these objects are called "mobile stations", in that they can be implanted at will, and then moved if necessary. The "zones" can thus be made variable, since it is enough to modify the physical arrangement of the objects ("mobile stations") which define them to modify the perimeters associated with the stations. A "contextual service" can then issue a message (more generally a modulated contextual service) to one or more users. And this is controlled by the exchange of information between the station or stations and the or each mobile terminal. It follows implicitly the intervention of a controller, able to send the message corresponding to the contextual service.

  The station or stations may be equipped with a short-range communication system, such as Bluetooth, to which may be added the use of a wide-area communication network, such as mobile telephony.

  The present invention is in line with WO 01/89189 A2. In this context of a "physical approach", there exists on the one hand an infrastructure including the stations, and a service provided on demand by telecommunication, on the other hand mobile couples terminal / user. The Applicant has observed that two broad subclasses can then be distinguished.

  The first subclass is called here the pulling approach. In this case, the context is determined at the mobile terminal / user. The mobile terminal collects a set C of information (attributes) from the surrounding stations. The mobile terminal then contacts the service provider itself, in principle automatically, by specifying the set of attributes C. This makes it possible to adapt / modulate the service, which is delivered back to the mobile terminal. In this "pull" approach, access to the service is initiated by the mobile terminal / user pair. The subclass "pull" requires to implant in the mobile terminal a specific hardware and / or software component, dedicated to the acquisition of the context and the subsequent access to the service. This component can be configured by the user to access only certain types of contextual information, or possibly none. It follows that this approach is not universal, because of the need to install a specific component, and also to have it configured by the user, in particular to specify the filtering of the information to be collected. which is not necessarily intelligible to all.

  The second subclass is referred to here as the pushing approach. In this case, the mobile terminal / user pair is detected by the infrastructure, then directly contacted by the latter, which therefore has the initiative of the service. The disadvantage of this last method (push) is that it does not take into account the wish of the user (who owns the mobile terminal), since the service can reach directly all terminals within range. The user can therefore be repeatedly solicited by unwanted contextual messages, or, at the very least, by queries from his mobile terminal, asking him for his agreement to receive contextual messages. This is particularly the case of the "push" Bluetooth, which involves the solicitation of the user each time it enters the area within reach of the service. This is similar to the nuisance felt by the other because of the unwanted messages that we call "spam". The possibility of using a global communication infrastructure (of the SMS platform type) can also be envisaged.

  Architecture5 The architecture of the contextual local communication device 1 according to the invention is first described with the aid of FIG. 1A.

  The communication device 1 according to the invention comprises a contextual service control platform 3 (or controller) operating according to the pushing approach described above. The control platform 3 is associated with a contextual service area 5. This means that the control platform 3 is arranged to deliver at least one contextual service almost at any point in the service area 5 The service zone 5 is determined according to at least one physical element of interest 7 linked at least to a service to be delivered in the service zone 5. The form and the nature of this physical element 7, and the nature service to be delivered, may be interdependent.

  By way of non-limiting example, the physical element 7 can be a public display panel and the service area 5 can be determined so that inscriptions on this panel are readable from any point of the service area 5.

  The control platform 3 is connected to at least one short-range wireless communication interface 9 capable of establishing such communication with conjugated communication means present in the service area 5. In particular, the communication interface 9 makes it possible to establish a communication with at least one mobile terminal 11 provided with such conjugated short-range wireless communication means 13, and situated in the service zone 5. This communication enables the mobile terminal 11 to receive a message transmitted by the control platform 3.

  The mobile terminal 11 may take the form of a mobile phone, a laptop, a personal digital assistant, Bluetooth headset for example, or the like.

  More and more mobile phones and PDAs offered today integrate serially Bluetooth communication means: the control platform 3 therefore preferably includes a communication interface 9 according to this standard.

  Other short-range wireless communication technologies such as WiFi (as defined in IEEE 802.11b / g), ZigBee or the like may be employed.

  In an advantageous embodiment not shown, the control platform 3 comprises several short-range wireless communication interfaces 9 of different technologies. Thus, communications according to different technologies can be established in the service area 5, which increases the compatibility of the device according to the invention with the mobile terminals 11 of the trade. This also makes it possible to reduce the respective load of each communication interface 9.

  Preferably, the control platform 3 comprises several communication interfaces 9 of the same technology so as to further reduce the respective load of each interface. This results in better availability and more responsiveness of the service because the connections are distributed over several interfaces. This is particularly noticeable in the case of multiple Bluetooth interfaces.

  The control platform 3 is connected to a radiofrequency label detection network 15 arranged to detect the input, the output and / or the presence of such a label 17 in the service area 5.

  The labels 17 may be here of the so-called RFID type. More generally, the so-called "radiofrequency label" in this description is a portable object of small size, passive or quasi-passive, which ensures the permanent storage of a collection of bits, and which is searchable by short radio communication. scope. In the remainder of the present description, this collection of bits will be called memory. Other types of tags could be employed, for example NFC (Near Field Computing) tags.

  The detection network 15 comprises at least one manager 19 and an antenna 21 connected thereto. The antenna 21 is capable of reading data contained in the memory of a radio frequency tag 17 within range.

  In one embodiment, the detection network 15 comprises a single antenna 21 connected to the manager 19: the presence of the tag 17 within range of the antenna can thus be detected. The presence of the tag 17 can then be detected at a particular point in the service area 5. The data in the memory of the tag 17 can only be read at that particular point in the service area. 5.

  In another embodiment, the detection network 15 comprises a plurality of antennas 21 connected to the manager 19 and distributed so as to cover a larger area 35 than the range of a single antenna 21. In particular, the antennas 21 can be distributed in such a way that a label 17 can be read at any point in the service area 5 or can be distributed along the periphery of the service area 5.

  The detection network 15 may in the case of several antennas comprise several managers 19, in particular when the maximum number of antennas can be connected to the manager 19 is reached.

  The manager 19 may comprise for example an RI-CTL-MB2A controller of the S2000 series manufactured by the Texas Instrument company and RF-MOD-TX8A multiplexers manufactured by the same company.

  In some configurations (Figure 1B), the service area 5 is accessible only by mandatory and identified crossing points. In this case, an input / output detector connected to the manager is advantageously arranged at each of these points of passage. Such a detector comprises for example two antenna lines 21A and 21B disposed at said point of passage, parallel to each other and transversely to the direction of passage. It is thus possible to detect the direction of passage of a label 17: when the line 21A detects a label 17 before the line 21B, the direction of movement is from the antenna 21A to the antenna 21B, and vice versa.

  This embodiment makes it possible to avoid the distribution of antennas 21 over the entire service area 5. Advantageously, so-called "soft" antennas are used, which make it possible to follow the contour of a support, for example antennas. flexible plastic film type CIPAM CIP ANT-LF.

  The control platform further comprises a computer 23 capable of controlling service delivery according to the pushing approach.

  Optionally, the control platform 3 comprises means for local storage of contents to be delivered (not shown). These means can take the form of servers NAS 30 (of English, Network Area Storage).

  The control platform 3 further comprises an access interface 25 to a global communication network 26 of wired or wireless type, for example GSM, GPRS, EDGE, UMTS, IP or similar. This communication interface 25 allows on the one hand the control platform 3 to access remote computing means suitable for performing computer processing for at least some of the services to be delivered in the service area 5 or to resources In addition, the interface 25 makes it possible to establish communication with mobile terminals 11 having global communication means 27 that are conjugated, that is to say, for example, of the type described in FIG. cellular network, GSM, GPRS, EDGE, UMTS or similar. This allows in particular to establish communication with a mobile terminal 11 standard mobile phone type.

  According to the invention, the tag 17 is disposed on a portable user object of a mobile terminal. The portable user object advantageously takes the form of a card, for example of the form of a credit card. The portable object can also take the form of a key ring. Finally, the label can also be self-adhesive so that it can be affixed to any support at the discretion of the user. In particular, the label can also be integrated into everyday objects worn by the user, for example clothes (shoes, pullovers, etc.).

  The label 17 is advantageously of the so-called passive label type, that is to say that the label 17 does not have energy autonomy or processing capacity. However, it is able to respond to an interrogation request by transmitting a message containing the data stored in its memory. The energy required for this activity is drawn from the signal induction current of the interrogation device, here antennas 21. This configuration makes it possible to overcome energy constraints and induced weight.

  However, it is understood that active labels, that is to say provided with a clean source of energy, could be used provided that they operate in passive mode, that is to say that they are content to answer a query signal. For example, labels labeled TITIS RI-TRP-W4FF manufactured by Texas Instrument can be used.

  FIG. 2A illustrates the contents of the memory of a tag 17A able to interact with the device according to the invention, in a first embodiment of the invention.

  The memory of the tag 17A stores ComAdrDat communication address data relating to the mobile terminal. The ComAdrDat data comprises a contact address of the mobile terminal 11 by the contextual service, for example a hardware address of the communication interface 13, for example the hardware address of a Bluetooth interface, or a cellular telephone number. .

  The ComAdrDat communication address data can constitute a user identifier, for example at the level of the control platform 3. In some cases, the ComAdrDat communication address data can be completed or replaced by such an identifier. of user in the same 17A label.

  As an option, the memory of the tag 17A stores general ServGenDat service data relating to at least one service likely to interest the user. In particular, the ServGenDat data includes an identifier of the service of interest to the user.

  In addition, the memory of the tag 17A may optionally store specific ServSpecDat service data characterizing a particular service, or the user with respect to that particular service (profile, preferences). These specific data can be attributes relating to a particular service.

  Preferably, the data ComAdrDat, ServGenDat and ServSpecDat are stored in the same label by reserving bit ranges to the different data. This allows in particular a simplified reading of the different data because a single label must be detected. The data ComAdrDat, ServGenDat and ServSpecDat then form one and the same code word.

  The data ComAdrDat, ServGenDat and ServSpecDat can nevertheless be stored in different labels, in particular when the memory capacity of a single label 17 is not sufficient. The ServGenDat and ServSpecDat data then form several code words (or code sets).

  When several tags are provided, they can be affixed to the same portable object: for example, an object specific to a particular contextual service, the memories of the tags storing data relating to this particular service. But the labels can also be linked to distinct portable objects: for example, the ComAdrDat data can be stored on a label of a first portable object, while ServGenDat and ServSpecDat data relating to different services can be distributed over a number of different objects. second portable objects, each portable object being specific to a particular service.

  We understand that the multiplication of the labels offers the possibility to the user to manage the behavior of the various services:

  35 - in the case of portable objects specific to a particular service, the user may choose to carry one object rather than another to benefit from a particular service and to do without another, - in the case of Different portable objects whose tag (s) stores different ServSpecDat data but relating to the same service defined by ServGenDat data, the combination of portable objects carried by the user define attributes of the contextual service to be delivered. As a variant or in addition, at least some of the labels may be selectively activated and deactivated, for example by a physical intervention on the label, or by reversibly arranging a radiation-tight cover on the label.

  In particular, it has been described how the combination of different portable objects can define the contextual service or services delivered, but it is understood that the different labels used in these cases can be provided on the same portable object and made activatable / deactivatable according to the methods. described above.

  The tag 17A comprises at least ComAdrDat communication address data. This does not preclude the provision of additional labels carrying information, which labels do not contain a communication address.

  In another embodiment of the invention, illustrated in FIG. 2B, the memory of a tag 17B exclusively stores DBAdrDat database address data. This DBAdrDat data comprises an address to a record of a database, for example stored on the platform 3. Said record comprises ComAdrDat communication address data and optionally ServGenDat service general data and data. ServSpecDat service-specific, similar to the data in Figure 2A.

  The contents of the memory of a tag 17 may be encrypted, for example according to the RSA algorithm or the 3DES algorithm to ensure the confidentiality of the data. In this case, the control platform 3 advantageously maintains an encryption key, of public or private type, making it possible to decrypt the data.

  According to the invention, the portable object provided with a label 17 is intended to be worn by the user of the mobile terminal 11. The tag 17 and the mobile terminal 11 are associated with the data 3 5 ComAdrDat (type label 17A), or terminal data 11 stored in a database record designated by the data DBAdrDat (type label 17B). The tag 17 and the mobile terminal 11 thus form a pair.

  Operation The operation of the device according to the invention is now described by means of the flowchart of FIG. 3.

  A user carries a pair consisting of a radiofrequency label 17 and a mobile terminal 11. The user enters the service area 5.

  In step 300, an antenna 21 detects the presence of the tag 17 within range.

  In step 302, all the data of the memory of the tag 17 is read by the antenna 21 and then transmitted to the control platform 3. In particular, the control platform 3 receives the data of the ComAdrDat communication address, the ServGenDat service general data and, if applicable, the specific ServSpecDat service data. In step 304, the control platform 3 compares the general service data ServGenDat identifying at least one service desired by the user to the services available on this control platform 3. If the service identified is not available on the control platform 3, the treatment is abandoned (step 306).

  Otherwise, in step 308, the control platform 3 generates content specific to the identified contextual service. Where appropriate, this development takes into account the specific ServSpecDat service data. In a nonlimiting manner, the developed content may take the form of a text message, a sound message, an internet address, possibly in streaming, or an executable application on the mobile terminal 11. In step 310, the control platform 3 transmits a message integrating the content developed in step 308 to the address defined by the ComAdrDat communication address data.

  In step 312, the mobile terminal 11 determines the appropriate action of the received message according to the type of message (message itself or application). For example: the message may be a sound message restored by conventional sound reproduction means of the mobile terminal 11; the message may be an SMS text message, restored by conventional means of the mobile terminal 11; message may contain a pointer to a content address (for example, an internet address or URL), and in the particular case where the message is a pointer to a service or a web page or WAP, the mobile terminal 11 may launch a browser Web or Wap, - the message can take the form of an application for example a Java application to be directly executed on the mobile terminal II, when it supports this technology (if not, we can, if necessary) , provide a pointer to a web service or WAP).

  Other forms of message can be envisaged. The message received may include a pointer to an application to be downloaded to the mobile terminal 11. This application may in turn implement a service. And this service can then be contextual and interact according to the pulling approach. In other words, the pushing approach proposed here can be used to trigger a contextual service that operates according to the pulling approach. An interesting achievement may be to deliver an initial application ("bootstrap") according to the pushing approach. And this application then starts reading radio tag, this time on the side of the mobile terminal 11, with a suitable reader. The contents can then be obtained according to the pulling approach "pull" by means of wireless communication Bluetooth, WiFi, GPRS or similar, from local and / or remote servers. This approach makes it possible to reduce the energy expenditure linked to a permanent RFID reading on the mobile terminal: this reading is indeed triggered contextually by the application obtained according to the push approach when the situation is appropriate.

  In the particular embodiment of a label 17 of the type of FIG. 2B, the tag 17 stores only the DBAdrDat data, in step 302, in the form of a pointer to a database linked to the plate. 3, said database maintaining information enabling the mobile terminal 11 to be contacted. ServSpecDat data relating to the service to be delivered and specific to the bearer of the tag 17, or ServGenDat data, are maintained in FIG. this database. And these data are used for the development of the content of step 308. The implementation of steps 310 and 312 then being identical to the embodiment of FIG. 2A.

  In an alternative embodiment, the ComAdrDat communication address data comprises a call number to the mobile terminal 11 via the global communication network 26. Typically, it may be a number of phone.

  For delivery of the message, the control platform 3 can then contact a remote control platform, specific to the global network 26.

Advantages

  The communication device according to the invention offers numerous advantages.

  Thus, the risk of reception by the user of unsolicited messages is considerably reduced because only the users carrying a label can identify the desired service to be contacted. In addition, the communication address of the mobile terminal 11 must be known to contact the user, and this reading can be done locally.

  The identification of the desired service can be done in particular on the basis of the following basic information: - directly by a service identifier taken from the label, - according to "user preferences", directly or indirectly deductible 10 of information carried by the tag, - based on profile data, which can be derived from a history of previous "contacts" with that user, and / or other tags carried or information presented by the user.

  The same basic information can be used not only to make the decision to send a message, but also to establish or modulate its content.

  When the short-range wireless communication technology implemented is Bluetooth, the Bluetooth communication address stored in the tag memory is immediately known, which eliminates the usual Bluetooth address discovery phase. This advantage can also be obtained in the case of other communication technologies whose time of discovery of the communication interfaces is important.

  More generally, the device according to the invention makes it possible to dispense with the discovery mode relating to the short-range wireless communication interface. However, this mode is particularly vulnerable to "spam" since it regularly distributes ComAdrDat communication address data or similar.

  In the variant where the communication address data, for example ComAdrDat, comprises a telephone number (or other number of a global telephony service), the device according to the invention offers universal communication possibilities in this respect. meaning that any mobile phone device is likely to receive a message of the device according to the invention while maintaining strong security against unsolicited messages for the reasons explained above. The devices of the state of the art which have a tag reader on the mobile terminal 11 have a disadvantage: a radio frequency tag content reading software must be operated by the user; however this is impractical and inefficient, because the user tends to forget to operate the software. In replacement, this software can be constantly active, but that implies a permanent energy expenditure that can not be accepted for mobile terminals, which we know limited in electric autonomy. The device according to the invention overcomes these disadvantages: on the one hand, it is not necessary for the user to activate a detection software, on the other hand the most energy-consuming elements are fixed and can therefore be connected to a major energy source, for example the general electricity distribution network.

  Arrangements The communication device 1 according to the invention may have different arrangements.

  In the configuration of Figure 4A, the physical element of interest 7 is disposed within a closed chamber 29 accessible by a mandatory passage at which are arranged antennas 21A and 21B. The Bluetooth interface 9 is disposed outside the enclosure 29 and covers almost all of the latter. The area covered by the Bluetooth interface 9 delimits the contextual service area 5. The antennas 21 read the radio frequency tag 17 carried by a user who enters the enclosure 29. The user can obtain the delivery of a contextual service at any point within the enclosure 29 but also outside thereof. It will be understood that the Bluetooth interface 29 could be provided inside the enclosure 29 and its range adapted so as to substantially cover only the zone delimited by the enclosure 29.

  In a particular case not shown, the antennas 21A and 21B are arranged to form an input / output detector, such as the detector described above. The control platform 3 can then be programmed to abort the contextual service delivery processing when the antennas 21 detect that the user is leaving the enclosure 29.

  For example, the configuration of FIG. 4A can be implemented in a store: the ComAdrDat communication address data is read at the store entrance by the antennas 21A and 211B and the Bluetooth interface 9 transmits information inside the store.

  In Figure 4B, two physical elements of interest 7A and 7B are shown. Near each of these elements 7A and 7B is arranged an antenna 21 connected to the manager 19. The elements 7A, 7B, and the antennas 21 are arranged inside the coverage area of the communication interface without short-range wire 9. This coverage area delimits the service area 5. The label 17 can be read when the user is at one of the physical elements of interest 7A or 7B. The user can receive the contextual service in all points of zone 5.

  The arrangement according to Figure 4B can be implemented in an airport, for example. Elements 7A and 7B take the form of ticket windows, possibly different airlines. The ComAdrDat communication address data of the tag 17 is read at these counters by means of the antennas 21. Information relating to a particular flight may be included in specific ServSpecDat service data of the same tag 17 or a tag. different label. Advantageously, the label or labels 17 are then affixed to the ticket of the user. Even after leaving the windows, the user can be notified of the immediacy of the boarding of his flight by receiving a message via the Bluetooth interface 9.

  In FIG. 4C, two physical elements of interest 7A and 7B are disposed inside an enclosure 29 accessible by a single mandatory passage at which two antennas 21 are arranged. Near each of the elements of interest 7A , 7B, a short-range wireless communication interface 9A, 9B, respectively, is provided. Thus, a geographical area surrounding the elements of interest 7A or 7B is covered by the short-range wireless communication interface 9A, 9B respectively. Two service delivery zones 5A and 5B are thus delimited. The reading of the radiofrequency tag 17 carried by a user is performed at the input thereof in the chamber 29 by means of the antennas 21.

  The arrangement of Figure 4C can also be implemented in an airport. The ComAdrDat contact address data, as well as data on the user's flight, can be read at the entrance of the airport. When the user approaches his company's place of embarkation (for example, element 7A), he receives, possibly at regular intervals, time alarms on the recording time limits.

  In FIG. 4D, the physical element of interest 7, the antenna 21 and the short-range wireless communication interface 30 are arranged close to one another. The short-range wireless communication interface 9 defines a contextual service area 5 centered on the physical element of interest 7.

  The arrangement of FIG. 4D can be implemented outdoors in a piece of street furniture, such as a town plan. The ComAdrDat communication address data is read at the level of said furniture item (item of interest 7) by the antenna 21 and, for example, location data is received via the Bluetooth interface 9 on the mobile terminal. All this takes place in a localized geographical area.

Examples of use

  We now describe an example of use of the device according to the invention, not limiting.

  A user contacts or is contacted by a contextual service provider who offers him to obtain on his mobile phone information targeted to his interests.

  The service provider inscribed in the memory of the label 17 first information on the technology to be used for the delivery of the service, for example Bluetooth or GSM / GPRS. As the case may be, the telephone number of the user or the hardware address of the Bluetooth interface 13 of his mobile phone 11 is entered in the memory of the tag 17. Where appropriate, this Bluetooth address can be detected, for example if a Bluetooth discovery mode of the phone, or the like, is activated.

  The service provider also stores, as ServGenDat service general data, information identifying the targeted advertising service and, as ServSpecDat service specific data, information identifying one or more points of interest of the user. .

  The supplier delivers a card provided with the label 17 thus programmed to the user.

  If the user goes to a store in which is arranged the device according to the invention, the radiofrequency label 17 that it carries is read, for example by antennas 21 arranged at the entrance of the store. After the platform 3 has processed the collected information, the user receives on his telephone 11, in the form of a message, a list of promotions on articles related to the memorized interest center (s).

  In a similar example, the user may carry a pullover on which is affixed from the manufacture a label 17 containing specific data relating to the trade mark of the pullover. When the user is also carrying a label 17 containing ComAdrDat communication address data, he can receive on his mobile phone 11 a list of promotions relating to the mark of the pullover he wears.

  Nature of the message addressed The content pushed on the terminal may be a static content message (such as a text media, a music, an image, or a video), in the sense that it is not a program. It can also be an active content in the sense of a program to activate immediately (in the moment following the gesture required to acquire the content). Typically, it would be a Java program, "packaged" in a JAR-type archive containing not only the program (executable code) but also the appropriate data (such as geo-dependent or context-dependent information). ).

  The JAR (or equivalent) is an autonomous package (in the sense of "self-sufficient") intended to be executed in the environment close to the physical object that delivers it. Such a package is called here Griplet (English Grip = handle), because it is a small software application to catch with a hand gesture and use immediately. The package can be deleted by the user when it is no longer useful, or replaced by another Griplet loaded from another physical object. So it's sort of a disposable software application)

  Several Griplets can be associated with the same service, each version corresponding to a different configuration. A Griplet can also be generated dynamically with respect to the user's choices.

  Several modes of distribution of "Griplets" and more generally applications to emit (to "pusher") can be envisaged.

  In a first mode, all the resources necessary for the operation of the application are assembled in an archive, for example an archive in JAR format for the JAVA programming language. This archive can also be signed, so that the receiving mobile terminal can check with a certificate the origin of the content. In a second mode, the mobile terminal has an initial executable program, which can, if necessary, have been received by "push". Additional elements can be received later which are able to interact with the initial executable program. These elements can be received by "push". These complementary elements may take the form of: a content that can be described as "static", that is to say text, image, sound and the like data, or composite documents, - Executable program modules that complete the functionality of the initial program. A module is dynamically linked to the initial program: for example, in Java, such a function can be provided by the "classloader" and / or code mechanism that the initial program has to interpret (ie say scripts).

  These complementary elements can influence the operation of the initial program. As these elements are sent by "push" in the service area, the activity of the application, as well as its composition, may change depending on the movements (or movements) of the user in the service area and / or label manipulations that the user performs.

Special applications

  Different particular applications are now considered.

  Figure 5 shows an example of a particular multi-antenna guide panel structure. Here, RFID antennas are considered, by way of example. The panel P50 has an active display zone AS, where signs S00 to S33 appear, arranged for example in a matrix. The user points to the destination to reach by approaching his RFID tag one of the signs S00 to S33.

  In a first embodiment (FIG. 5), the panel P50 has laterally, here on the left side of the active zone SA, at least two long and oblique antennas LHR and LLR of average range (of the order of one meter). and whose axes of radiation converge towards the active zone SA. These antennas are for example CIPAM models CIP_ANT-LF manufactured by Texas Instrument.

  The antennas LHR and LLR are in permanent read (in use), and provided to recognize labels provided with a data word including a (variable) identification of the connection to the bearer, and possibly a fixed part which is worth access authorization (directly or indirectly).

  With such an antenna placement, (at least two), relative to the panel, when a response of a tag is detected, the power of the received signal is measured at each antenna. We deduce the intersection of at least two arcs in the plane of the panel, for example LHR1 and LLR1. The intersection which is in the active zone SA designates one of the signs, here S11.

  Other antenna arrangements are conceivable, which in any case give the intersection of two circles, or several intersections if there are more than two antennas, which makes it possible, if necessary, to remove the ambiguity. present when two different intersections are within the SA zone. Ambiguity can also be removed by tracking the movement of the label in front of the P50 panel, as motion tracking may make one of the intersections unintelligible.

  As a variant, or in addition (FIG. 6), it is possible to arrange a grid of very short-range antennas in front of or behind the plane of the panel, to the right of each of the signs S00 to S33. The antenna closest to the label then determines the one of the signs S00 to S33 which is aimed at. These antennas are for example CIPAM models CIP_ANT-LF manufactured by Texas Instrument.

  In both cases, the recognition is initiated by a tag owned by the mobile terminal / user pair.

  It follows then the following operations (Figure 7):

  in 700, detection of the user (and of a communication address, for example, of his bluetooth address), as well as of the destination, defined here by that of the zones S00 to S33 which is designated by the proximity of the label (alternatively, or in addition, the destination may be defined by a code incorporated in the word that contains the label).

  in 702, this data is sent to the local or remote server.

  2 0 - in 704, dynamic creation by the server of an application (or "griplet"), set to ensure navigation from the panel to the destination. This application may contain in particular data that specifies the destination, and the map data necessary to view the path.

  - in 706, the server "pushes" this application (griplet) to the user concerned, using his communication address.

  in 708, reception of the application (griplet) on the terminal (telephone) of the user. - In 710, the user starts the application (Griplet). Alternatively, the phone is configured to implicitly activate the application (griplet) upon receipt. This variant applies for example in the case where the applications are certified and the phone can check the origin of the applications. In 3012, the use of the application, here a navigation, can begin.

  If the destination zone is sufficiently precise, this destination forms the direct goal of the navigation. Otherwise, a short list of places (ex: street names) to reach can be listed for the user.

  The browser displays the map, and starts the navigation (materialization of the current position and the destination).

  Typical example: contextual service in urban environment.

  Poster boards are considered, capable of pushing Griplets containing: - a small satellite navigation software, - a map and / or a neighborhood map and / or a satellite photo and / or a small system geographic information of the area surrounding the sign.

  It is assumed that the user's terminal has a GPS receiver (or equivalent) own, or a remote GPS head (communicating via bluetooth with the terminal for example).

  It suffices for the user to approach his RFID tag of the appropriate logo on the panel, (typically placed on the face containing the neighborhood map), to start the navigation griplet almost immediately without going through a selection menu. of applications in the phone, (which is a key advantage in terms of ergonomics on a mobile terminal).

  Similarly, when the user no longer has the use of this navigational griplet and arrives, for example, at the entrance to the metro station he was looking for, he could similarly approach his label. RFID near a panel giving him a griplet dedicated to the subway (lines, schedules ....), or similar for buses.

  In the case where the mobile terminal-user pair is not equipped with a GPS function (or equivalent), a panel board navigation is also possible.

  Of course, the guidance application is not limiting. More generally, the "griplet" system allows the user to trigger assistance, assistance, or comfort services simply by approaching his RFID tag objects capable of delivering a contextual application of the griplet type, advantageously identified. visually by a logo.

  Usage interface The usage interface can include the following elements:

  at. Display a logo or other sign at the level of the physical object (panel in the example) able to propose diffuse information. The logo indicates to the user that it is enough for him to approach the logo with his RFID card (or his phone if the RFID tag is on it), the object to catch the information he research. This logo corresponds, in fact, to a virtual handle. The card may possibly be covered with said logo. b. At the level of the user, it is necessary to provide the possibility of accessing the content in an intuitive manner, by a gesture: in the simplest case (a single digital object to access), the gesture may simply consist of place the tag, (or mobile phone + tag pair), near the logo. vs. When several contents are offered, the selection can also be done physically: - Several logos are placed on a menu of contents, - To access the selected content, the user approaches the label on the corresponding logo, * For example, an advertising panel can have two sides (a plan and an advertisement) and offer two associated digital contents; we would then place a logo on each side, with the appropriate antenna arrangement to detect both sides. Several contents per side are also possible. * A panel can also offer several different contents (or the same content / service to modulate) according to a particular geometric arrangement on the panel: for example, an orientation guidance panel can display a plan, and offer to the user a navigation service whose destination 30 is chosen on the point panel pointing with a label. An antenna arrangement (for example in a grid) is provided in order to be able to detect the different zones to point on the map as described above.

  * In the most complex cases, it is also possible to associate commands 35 with label movements, for example moving the label from right to left facing the logo, or from left to right, would result in two different commands. Here again, provision is made for the appropriate antenna arrangement to detect the transition. A person skilled in the art will understand that such a user interface makes it possible for the user to benefit in a very simple way from dynamic services while protecting him from the risk. SPAM (push of unsolicited messages), within the limits of legality. The interface may be used with future diffuse information systems.

  Optionally, the panel may be provided with a light device whose light emission characteristics, typically color, may depend on: the antenna that is reading the label, the communication technology used, the proximity of the label, the reading of the label data, the movement, or the like. In particular, it may be provided a panel backlight so as to illuminate the antenna reading the contents of the label.

  Programming and distribution of labels The implementation of the device according to the invention involves, on the one hand, the programming of a communication address of the mobile terminal 11 that can be exploited by the platform 3 in the memory of a label 17. On the other hand, labels (or portable objects) must be distributed to users.

  A first solution is to distribute the labels "on site", that is to say near the place where the device according to the invention is implanted. For example, a wicket or a withdrawal terminal may be provided on site to distribute the labels 17. A label 17 may also be issued at the same time as another service: in an airport, for example, a label may be delivered to the user at the same time as his boarding pass, at the ticket office.

  When the communication address is known to the user, typically when it is a mobile phone number, the address can be written in the label 17 instead of distributing the label on simple information given by the user. If necessary, the telephone number may be tested (by a call or the sending of a message eg SMS) to avoid an error in the number recorded.

  However, the communication address may not be known to the user, for example if it is a so-called "low level" address such as a hardware address of a Bluetooth interface.

  In this case, we can ask the user to put his phone in "discoverable" mode, when the wireless communication interface requires it (this is the case of Bluetooth, for example). A device detection device, in accordance with the wireless technology used, can then establish a list of identified mobile terminals present within its range. When the user's terminal is identified, a tag is programmed with the detected and identified address. Optionally, a "Griplet" may be transmitted to the terminal according to the pushing approach, this "Griplet" may in turn interact with the device according to the invention.

  In the embodiment of FIG. 2B, an identifier of the user in a database would be programmed in the memory of the tag 17.

  A second solution is to provide the label 17 after a control phase, for example with an Internet service. In this case, a low-level address may possibly be detected by the Internet access terminal. For example, a personal computer with a Bluetooth interface may determine the hardware address of a Bluetooth interface of a mobile terminal.

Other embodiments

  In the description of the architecture of the device made above in connection with Figure 1 in particular, a control platform 3 disposed locally was considered. Nevertheless, this control platform 3 can be deported, at least partially. For example, a part of the control platform 3 managing the manager 19 and the interface 9 may be arranged locally and be connected to a part of the control platform managing the interface 25. The connection between these parts can be done via an Internet connection. It has been described above the delivery of a contextual service to a user based on data specific to this user and used by the contextual service. In some cases, the contextual service delivered to a particular user may depend on the data specific to several users collected by the device specific to several users. Conversely, a contextual service determined from data specific to a particular user can be delivered identically to several users.

  Figures 3 and 7 can be seen as illustrating methods.

  More specifically, the invention can also be viewed as a local communication method.

  Very generally, such a method comprises the following steps: a. at a chosen location, having a plurality of passive portable objects, each containing at least one code word, b. providing a plurality of tags, each capable of interacting with a portable object, to acquire the codeword it contains, c. in the presence of an interaction between a beacon and a portable object: cl. memorize, at least temporarily, the acquired code word, then c2. implementing a decision mechanism relating to the spontaneous transmission of a message, in which the decision to issue a message, its content and / or its destination address at least partially depend on the stored codeword.

  Of course, this method can be refined according to the different variants described in the present description. Thus, for example, in the case of the panel (FIGS. 5 and 6): step a. is realized with the panel provided in a chosen place, while the user has a plurality of passive portable objects, each containing at least one code word,

  as for step b., there is provided at the same place in the example on the panel, one or more beacons, each capable of interacting with a portable object 17, in order to acquire the codeword qu 'it contains.

  Finally, in step c., The message can take one of the forms set out above, in particular a link to a website, or an executable application.

  In the device described, there was talk of a GSM interface. It will be understood that any generally widespread type of communication mode, in which the interface is determined by a number known to the user, and capable of supporting the transmission of messages as defined herein, can be used.

  Likewise, the invention is not limited to a Bluetooth-type interface but extends to any interface compliant with wireless local communication technology, and whose interfaces can be integrated with mobile terminals, in the sense discussed above.

  Finally, there has been talk of radio frequency tags of the RFID type, but the invention could also be implemented with any device of reasonable size, portable, able to store data, and can be read at short distance by devices appropriate.

  The invention is not limited to the embodiments described, but encompasses all the variants that may be considered by those skilled in the art within the scope of the following claims.

Claims (19)

claims   1. Local communication device, of the type comprising: - a station (9; 25) having a mode of communication with mobile terminals (11), 5 - a controller (3), capable of sending a message, destined to one or more mobile terminals (11), characterized in that: the device further comprises a beacon (19; 21; 21A; 21B) capable of interacting with at least one passive portable object (17) in order to acquiring at least one codeword from such a portable object (17), the controller (3) is arranged: to interact with the beacon (19; 21; 21A; 21B) in order to memorize, at least temporarily; The code word acquired, then, following such an interaction, to implement a decision mechanism relating to the spontaneous transmission of a message, a mechanism in which the decision to send a message, its content. and / or its destination address at least partially depend on the stored code word.   2. Device according to claim 1, characterized in that the code word comprises a representation of a call address to a mobile terminal (11).   3. Device according to claim 2, characterized in that the controller is arranged so that the decision to transmit a message, and / or its content, at least partially depends on attributes that can be determined according to the call address. . 25   4. Device according to one of claims 1 to 3, characterized in that the beacon (1 9; 21 A; 21 B) is located in access control to a space area which is covered by at least one station (9; 25), according to a short-range communication mode, so that after interaction between a portable object (17) and the beacon (19; 21A; 21B) when crossing the access control, communications between the station or stations (9; 25) and the mobile terminal (11) are permitted substantially over the entire area of space considered.   5. Device according to one of claims 1 to 4, characterized in that it comprises a plurality of beacons (19; 21) implanted in the physical vicinity of areas of interest (7), so that after interaction between a portable object (17) and such a tag (19; 21), communications between the one or one of the stations (9; 25) and the mobile terminal (11) are permitted based on a comparison between personal attributes designated by a portable object (17) and attributes of the area of interest associated with the tag (19; 21). 26   6. Device according to one of the preceding claims, characterized in: -in that the station (9; 25) is capable of sending the messages by short-range communication as well as by sending messages on a telecommunication link, and - In that the controller (3) is arranged to transmit each time the message in short-range communication or by the telecommunication link, according to at least one of the codes of said code word.   7. Device according to one of the preceding claims, characterized in that the station (9; 25) comprises a global type of communication mode.   8. Device according to one of the preceding claims, characterized in that the station (9; 25) comprises a short-range wireless communication mode.   9. Device according to one of the preceding claims, characterized in that the portable object (17) comprises at least one radiofrequency tag (17).   10. Device according to one of the preceding claims, characterized in that the beacon comprises a panel (PZO) provided with at least two antennas arranged to determine the position of a portable object on the panel by intensity measurement. of signals respectively received by the antennas.   11. Device according to one of the preceding claims, characterized in that the beacon comprises a panel provided with a plurality of antennas, for example arranged in a grid, so that the position of a portable object (17) facing the panel is detectable by identification means of the antenna closest to the object.   12. Device according to one of claims 10 and 11, characterized in that the decision to emit a message and / or its content also depends at least partially on the position of the portable object on the panel.   13. Device according to one of claims 10 to 12, characterized in that the decision to issue a message and / or its content further depends at least partially on a movement imposed on the portable object in front of the panel. 35   14. Device according to one of the preceding claims, characterized in that the code word comprises an identifier of a communication address of the mobile terminal (11) and an identifier of at least one contextual service to be delivered. 30   15. Device according to one of the preceding claims, characterized in that the code word comprises a contextual service identifier to be delivered and at least one parameter specific to said service.   16. Device according to one of the preceding claim, characterized in that the message comprises a program directly executable by the mobile terminal (11).   17. Device according to one of the preceding claims, characterized in that the code word contains an address to a record of a database.   18. Device according to one of the preceding claims, characterized in that the decision to transmit a message and / or its content at least partially depend on stored code words from several portable objects (17). 15   19. Device according to one of the preceding claims, characterized in that the decision to transmit a message and / or its content at least partially depend on several codewords.