ES2370844A1 - Method and system for on-demand localization based on standard mobile telephony terminals and interchange of messages - Google Patents

Abstract

Method and system for on-demand localization based on standard mobile telephony terminals and interchange of messages, which uses devices with means for accessing the mobile telephony network in order to establish P2P communications between a service request device (1) and a location-transmitting device (2), which involves synchronizing said devices by virtue of the service request device (1) transmitting a synchronization start message and each location-transmitting device (2) transmitting a service performance response if the location-transmitting device (2) transmitted a service performance confirmation, the service request device (1) transmits a location request message, the location-transmitting device effects a location query with a satellite localization system (3) and sends the location message finally, one of the devices ends synchronization by sending a synchronization end message.

Description

Procedure and location system by demand based on standard mobile phone terminals and message exchange

Field of the Invention

The present invention belongs to the field of location systems based on mobile telephony and platforms global positioning

State of the art

There are currently various systems of positioning based on the use of networks cellular mobile communications (GSM-Global System Mobile, GPRS-General Packet Radio Service, UMTS-Universal Mobile Telecommunications System, EDGE-Enhanced Data Rates for GSM Evolution, D-AMPS-Digital Advanced Mobile Phone System, PHS-Personal Handyphon System, etc) as underlying technology GSM is the communications technology most widespread mobile phones worldwide today. It emerged as consequence of the need to increase the quality of communications and provide new value-added services that they were impossible to implement with the previous mobile technology analogue GPRS, EDGE and UMTS can be considered evolutions of this technology.

Roughly , the infrastructure of cellular mobile communications networks is composed of 3 elements: the mobile user terminal, the base stations (mobile phone antennas) distributed throughout the geography forming communication cells and, finally, the switching nodes operator. The operation of these communication networks can be expressed simply as follows: a mobile phone always has a cell or base station associated with which to communicate to establish a communication. This association is completely automatic and transparent to the user. In the switching nodes, computer systems are maintained for tasks such as: call management, messaging, various services, etc. They are able to communicate with the mobile phone they keep located knowing the cell or group of cells with which they are communicating. In the case of GSM or GPRS, the base stations currently cover almost 100% of the Spanish territory. In this way, all mobile terminals registered in the system can be located geographically with a resolution equivalent, at least, to the size of the geographic area covered by a base station, which can range from hundreds of radius meters in areas urban two or three tens of kilometers in rural areas. It is also possible to improve the accuracy of the location by triangulation based on the positioning data of the mobile telephone antennas with which the terminal is in communication. Currently, GSM is evolving and new technologies appear with greater capacity such as UMTS, which will undoubtedly make this type of applications have to be updated for operation.

The use of the GPS system (Global Positioning System), for its cost, reliability and accuracy for applications civilians is, today, an alternative for this type of Applications. In essence, a GPS system is a system of positioning based on a set of satellites and stations terrestrial The position on the surface of the Earth is calculated from the measurements taken of signals from said satellites, with precision of the order of meters and even, in some advanced systems, up to centimeters. Stations terrestrial allow to correct certain deviations in the process of location.

In principle, the GPS has two features basic ones that make it of special interest compared to systems of positioning based on the information collected by the cellular mobile communication systems:

one.

The The first is precisely that of being global. It is a system which allows location at any point on the surface of Earth, even in the center of the oceans, as long as there is direct vision with satellites. Unlike that, any system based on the information collected by the systems of cellular communication is highly platform dependent used by the telephone operator. It could not be located, then, a terminal beyond the cells managed by said operator. This globality is of special interest in sparsely populated areas with little coverage of mobile communications systems based on cells.

2.

The Second relevant feature of GPS is its resolution: meters or, Even centimeters. This resolution can be considered very high if we compare it with that of the GSM-based system, which is conditioned by the density of antennas in the area, being able to get to get, at best (very urban areas populated), resolutions around 50 meters, while in areas interurban or rural location error can reach Around 20 km.

In general, and taking into account what Previous, we can say that location technologies based on GPS and those based on communications networks phones are complementary, since GPS systems present the inconvenience that the receiver must be in view of the satelite; so if the carrier of the GPS receiver is placed in somewhere covered (Metro, tunnel, building, etc.), will stop Be reachable by this technology. As opposed to this, in almost almost any place in an area with density medium or high population location is possible by mobile telephony, as the telephone operator companies take care of much the existence of coverage even in the most places hidden, in order to guarantee users the possibility to make calls and increase your phone traffic (and so both your billing) from almost any point. Even in the technologies are currently being developed that allow the location of mobiles in interior spaces.

On the other hand, the conventional GPS system has certain limitations, mainly due to low power emitted by satellites and at the low transmission rate of information sent. These characteristics have as a consequence that the time needed to set the position from the ignition of the receiver, TTFF (Time To First Fix), can be several minutes In addition, the reception capacity is, in general, limited to areas with direct visibility on satellites. He Conventional GPS model has been improved by the use of the AGPS (Assisted GPS) technology, which directly impacts the TTFF and on the sensitivity of the receptors, extending the reception to areas without direct visibility. AGPS technology is based on, in addition to communication with GPS satellites, employment of certain additional assistance information that is received by other means or external elements (such as a server of the system) that help in locating the receiver by sending Additional information.

With the assistance information, which has a temporary validity and therefore is periodically downloaded from the server to the receiving device, the following improvements occur: the TTFF is reduced, since the receiver manages to synchronize more quickly with the signal of the satellites and you do not need to decode that signal, because you know a priori the information that you will receive from them. Therefore, the time required for localization is reduced; the sensitivity and precision of the location is increased, allowing to fix the position in complicated environments, such as large urban and indoor environments; and finally, the battery consumption is reduced, increasing the autonomy of the system.

Similar devices are found to raised in the present invention in the context of the telecare, for the care of dependents, and in the Fleet management The use of location technologies in applications related to personal autonomy and aid techniques has been proposed and experienced throughout the last lustrum.

Among the initiatives developed in Spain we can stand out:

one.

He MobilAlarm system is a mobile telecare project driven in Spain by the Junta de Andalucía. This project has developed a positioning and telecare system based in GSM using the services provided by the operators of mobile telephony

2.

The Xunta de Galicia has promoted a system similar to the previous one based on GPRS devices. It applies to the location of older people affected by mild dementias. The operation of this system implies that the patient must always carry an ad hoc designed device the size of a mobile phone, which is fixed to the body with harnesses to prevent it from falling or being removed by the user. In case the bearer feels disoriented or needs help or assistance of any kind, just press a button to activate an alert system that will be immediately perceived by the call center. The most interesting thing about this application is that the information it provides to the call center is personalized for each user; In this way, the message will indicate if the elderly person who has requested help is at home, in a park where he usually walks or in one of the cafés he frequents, which guarantees a more agile response.

3.

He Mayan bracelet is a small device that behaves like a watch of bracelet. Integrates a GPS interface, to calculate the positioning of the person carrying the bracelet. In cases of domestic violence, when the aggressor approaches the victim about 1,000 meters his bracelets and the victim send their police positions. If the distance is reduced to 500 meters, the vibrator of the victim bracelet warns danger, as well as the police station. Inside, the bracelet has a series of sensors. One detects the movement (blows, strong falls, states of unconsciousness, if the person is standing, lying, running, sleeping, consumption energetic). Other measures body temperature (digital thermometer that can be programmed to notify you with an alarm when exceed a maximum or minimum temperature); and finally, it integrates a use sensor (warns if the person detaches from the bracelet) and resistivity (for example, indicates sweating, which might be due to states of nervousness or a drop in tension). When the person needs to be helped, or when the alarm sounds because it has left the perimeter set to control it (for example, in case of disorientation of an Alzheimer's patient), the bracelet send the alarm, either by GSM (voice) or GPRS (data), depending on schedule

Four.

He Columba bracelet consists of a bracelet that cannot be removed and that automatically detects each exit of an area considered safe around the patient's home or residence and alert a specialized telephone exchange that quickly contacts the family or emergency staff to coordinate assistance. The bracelet has a satellite tracking system (GPS), a GSM-GPRS transmitter-receiver with voice and data transmission and an intelligent computer program of Detection and alert. The device includes a phone through the which central that locates the patient can contact him thanks to the hands-free function of the bracelet. Also, in the switchboard can be permanently located to the patient, thanks to the GPS that is on the wrist.

On the other hand, the international patent application WO2006 / 000605 describes a device designed ad hoc for the analysis of the activity of a person and for the automatic detection of falls. The position of a person is detected by a conventional GPS system and, in order to monitor if the person falls to the ground, continuously measures the acceleration of the device (using an accelerometer), so that the fall is associated with a certain value of instant acceleration

Again, patent application JP11083529 describes a specific device capable of being located thanks to the combination of a GPS receiver, an accelerometer and a gyro. It is a specific device that performs the location always locally (on the device itself), without using AGPS information.

The JP10221427 patent application also describes a specific device capable of being located by a GPS positioning system. As in the previous case, the location of the device is achieved locally (without using AGPS information) and is based on a hardware device specific designed for this purpose.

GB2314986 describes an emission system and Reception for the protection of children. It consists of one or several emission and reception devices for the child or children, and a transmitter and receiver device for the watchman. The device for the watchman emits a radio signal to the device of the child, which, in turn, transmits a response signal. The signals used are amplitude and / or frequency modulated so that with the help of the evaluation of the time between the signals or the phase shift of the signals it is possible to calculate the Distance between devices. Again it is a hardware specific to the location problem.

DE-OS19852912 describes a emergency command consisting of a central unit stationary with a receiver and a portable transmitter. If the situation of the transmitter or the person carrying the station is not modified within a period or several predetermined periods are issues an alarm signal to a payer through the unit stationary central, for example telephone. It is based on a specific hardware device designed for this purpose.

Application ES 1058916 U refers to a device for detecting and locating people, especially indicated for the safety of schoolchildren, or dependents. It is based on specific hardware.

The application ES 1067563 U is intended to GPS tracking device via radio frequency, which allows the location of the transmitter with the GPS properties, and using radiofrequency It is based on the development of a hardware specific.

Application ES 1069834 U refers to a fleet tracking device, of the type of which they comprise a global positioning device and means of communication for the transmission of the position of a vehicle, trailer or freight transport of goods. It is based on the Development of specific hardware.

Application ES 2255387 B1 describes a system and vehicle locking and location device by technology GSM or similar, consisting of a control team, provided with GSM media or other technology, camouflaged in the inside a vehicle, functionally equipped with capacities of passive (blocking) and active (location) security. It is based on the development of specific hardware.

Application ES 2319182 T3 refers to a specific device in the form of a wrist watch for location and protection of people, device comprising a transmitter and location means to find out the place of the device. Again it is based on a hardware device specific designed for this purpose.

Finally, ES 2327887 A1 describes a location procedure of a portable device that Battery consumption decreases, for which a server is used configured to communicate with said portable device through of a wireless communications network. The server is used to collect and send AGPS information to the terminal itself portable, while storing the cartographies used to show the location of the portable device. Likewise, describes the modules of a hardware device designed to effect.

The device object of the invention is raised as a necessary complement to the methods and systems of Current location existing in the market. The device that is presents does not need a specific terminal or hardware, contributing to the universalization of the service, while contrary to any of the existing devices and services, not need any intervention of the telephone operators mobile. The presence of a server is not even necessary intermediate, an operations center, or a center of intermediation

Description of the invention

The objective of the present invention is the provision of localization services on demand based on Current mobile phone standards and platforms GPS global positioning, using devices Conventional mobile telephony, which allows tracking of the position of a mobile terminal from another, with the necessary requirements of privacy and security.

Additionally, if sensors are available connected to the location object terminal, the device can send complementary information, for example, to the monitoring of vital signs of an individual and / or of telemetry

The method and system presented represent a improvement with respect to the state of the art since working on standard mobile phone platforms the device does not need Specific hardware

On the other hand, the method and system of Location presented do not require an intermediate server, a operations center, or an intermediation center, since the communication is made from user to user using the transport services of a communications network. By not intervene third parties, it is a peer communication (P2P paradigm) that is established between two media devices of access to the mobile phone network, guaranteeing privacy of service and anonymity in its use. Likewise, the procedure proposed protects the user from location requests not desired by exchanging information related to one's own mobile device, to the telephone line (by the number of associated phone), to the user himself (using a keyword), and by random code generated automatically by the system that will be linked to each supervision session. For another On the other hand, the confidentiality of the information that is exchanged is guaranteed thanks to mobile communications protocols underlying contemplate the encryption of messages from exchange using algorithms of type A5 / 1 or similar.

\hbox{estándares de conexión inalámbrica, tal como Bluetooth,
Wi-Fi, Wi-Fi Max o
similar.}

At present, devices with means of accessing the mobile telephone network can incorporate a satellite location module at popular prices, comprising, for example, GPS and AGPS systems. However, in the event that mobile telephony terminals do not incorporate this type of modules, satellite location systems can be connected directly to a device with means of accessing the mobile telephone network via direct cable connection and / or different

 \ hbox {wireless connection standards, such as Bluetooth,
Wi-Fi, Wi-Fi Max or
Similary.} 

Also, currently the devices with mobile phone network access means are equipped with data connection via WAP (Wireless Application Protocol), GPRS, UMTS, D-AMPS, PHS, EDGE, Wi-Fi, Wi-Fi Max or similar for Allow a direct connection to the Internet. Also incorporate integrated motion detection sensors (such as, for example, accelerometers) that allow you to monitor changes extremely abrupt in the position of the device. Modern devices that have these characteristics are usually programmable, of so that modules can be easily controlled and monitored commented auxiliary thanks to APIs (Application Program Specific interface) available.

The solution proposed in this invention is the development of a low cost universal location device based on standard mobile phone terminals. Such device enables localization without using the services of location offered by telephone operators mobile or by other intermediation centers. Even so, in a way complementary, and if the user so requires, the device allows to use the location information provided by operators based on location-based triangulation of mobile phone antennas.

The system comprises two devices with media Access to the mobile phone network, the request device of the service and the location sending device, where both devices comprise processing means configured to perform the stages corresponding to the service request and when location shipping. Each service request device Can monitor several location sending devices; Y Each location sending device, can be supervised, to in turn, by several service request devices, being able, even, configure the same terminal to act according to Both roles

The location system is based on the text message exchange (SMS-Short Message Service) and / or multimedia (MMS-Multimedia Messaging System) following a preset protocol. The service starts when one of the devices, without a predefined initial role, sends a text message with a predefined format that will start the synchronization process The synchronization process will serve to assign a specific role to each of the two devices: the service request device role (T1) or the role of location sending device (T2). T2 will accept or not the cited synchronization through the timely exchange of messages. In case of not being accepted the process ends, but if it is accepted both devices assume their role and then the sending requests and corresponding responses from location.

After the synchronization stage, T1 can make location requests to the T2 device. One time known the location of T2, the location can be sent to requesting device in text format (SMS), or using of multimedia type messages (MMS) containing, in one embodiment preferred, an image that represents a map on which it appears superimposed the location of the T2 device.

During the procedure that implements the location system are identified, in one embodiment Preferred, three stages: a first Synchronization between dispositives; a second Location Request itself bliss and a third End of Synchronization. Likewise, during the Location Request phase, at least four are identified Operating modes: Point Location Mode, Mode Tracking, Out of Zone Alarm Mode, and Absence Mode Movement or accident

Thus, in a preferred embodiment, the location procedure is described by the following steps
country:

to)

Synchronization: at this stage you Establishes communication between both devices. It starts with a Synchronization Start message (M1) sent from the T1 device. The T2 device checks the identification of the message sender and can automatically confirm acceptance of the same, or request the intervention of the user confirmation, and the request may be denied. The result is sent to the T1 device by means of the Confirmation messages (M3) or Denial of Service (M4) respectively.

b)

Location Request: Exceeded Synchronization stage, the T1 device is authorized to send Location Request messages to the T2 device (M2), which will be answered by it through the appropriate Message of Location (M5) that collects the current location in coordinates geographical (latitude and longitude), UTM (Universal Transverse Mercator), or other possible formats. To do this, the device Consult the satellite location module information available, being able to use, even, the information of location provided by the operators from triangulation based on the location of telephone antennas mobile.

C)

End Synchronization: the T1 device can go to the End stage Synchronization when you want to terminate the T2 monitoring. To do this, T1 must send a message from End of Supervision (M6). When this message is received, the T2 device loses synchronization with T1, while sending a Confirmation Message (M3). In the same way, the request for End of Supervision can be initiated from the device T2

Location Petitions, initiated always from the device that accepts the request role of the service can be performed according to four possible modes of Operation: Spot Location Mode, Tracking Mode, Out of Zone Alarm Mode, and Absence Mode of Movement:

one.

Mode On-time Location: Once the stage of Synchronization between T1 and T2, and as long as it remains active, the T1 device can perform, at any time, one or more punctual location queries that will be answered by the T2 device. Additionally, the reply message could contain telemetry information.

2.

Mode Follow-up: once the Synchronization stage is over, T1 You can send location requests that will be answered by T2 within a defined time interval and with a defined latency. For this, an instant of beginning and an instant of completion of the follow-up, as well as a temporary latency, of so that the device periodically returns the position of the device to be located with intervals equal to said latency temporary and in the predefined interval. Additionally, the messages response could contain telemetry information.

3.

Mode Out of Zone Alarm: Once passed the stage of Synchronization, the T1 device can request that T2 send messages with their location only in the event that they were exceeded the limits of a predefined geographical area. In addition, to from the moment the T2 device leaves the predefined geographical area, you could automatically activate the Device tracking utility. Additionally, the message Answer could contain telemetry information.

Four.

Mode Absence of Movement or Accident: Once passed the phase of synchronization, the T1 device can request that T2 send Alert messages with your location, only in the case of that motion is not detected during a time interval predefined, or a sharp change in acceleration is detected. Additionally, the reply message may contain information Telemetry

The four operating modes listed are configurable for each user, being identified in the Location Request message.

In a preferred embodiment, and in order to avoid a use that could contravene people's privacy, The T2 device will be equipped with a manual activation mode or automatic Automatic utility would make sense for use by people strongly dependent or with cognitive disabilities deep.

On the other hand, and regardless of whether received a location request or not, in one embodiment preferred, and while remaining synchronized with T1, T2 will will be responsible for continuously collecting the location and time to which is obtained said location, so that, in case of lack of satellite coverage, if a request for location, it would be possible to send the last positioning correct known along with the time at which the positioning

Likewise, in case it was impossible collect information from satellite tracking systems, the location information provided can be used by operators based on location-based triangulation of mobile phone antennas.

Additionally, and in order to guarantee the service (even at the cost of losing resolution in it), in case of lack of coverage of location systems by satellite, terminal T2 can consult an approximate location making use of existing based positioning services in the mobile phone network. In the same way, to improve response times of the device, terminal T2 may use of available AGPS information.

In order to guarantee the identity of the applicant and avoid impersonation by terminals of third parties, in a preferred embodiment, certain communication security mechanisms based on exchange of information. During the supervisory start stage, the Synchronization Request message (M1) will comprise at least the following information: a) the telephone number that you will identify from uniquely the line corresponding to device T1; b) IMEI (International Mobile Equipment Identity) that will identify the T1 device uniquely when sending the Confirmation message (M3); and, c) a personal key that will identify the user (M3). These three data will help the T2 device to uniquely identify the authorized T1 device, either contrasting the data with a loaded authorization list previously, or by consulting the user and the subsequent inclusion in said list. Once the identity has been verified of the T1 device, a security token will be generated and sent together with the Confirmation message (M3), and that will serve for subsequent communications between T1 and T2. Said token will have validity until an End Synchronization message is received (M6), at which time you will unsubscribe from the list of authorization.

The possibility that each service request device can monitor several location sending terminals; and that each sending terminal of location, can be monitored, in turn, by several terminals of service request. Likewise, each terminal can adopt Both roles

Therefore, the location procedure by demand based on standard mobile phone terminals e message exchange, which uses devices with media access to the mobile telephone network to establish communications Peer includes the following stages:

to)

synchronize the devices that are going to establish communication, comprising:

?

select the device service request, at least one recipient to whom it will be made a location request;

?

make up the device service request, a synchronization start message integrating it into a data message comprising the type of message which is integrated and the IMEI of the service request device and, optionally, a password entered by the user;

?

send the device service request, the synchronization start message to through the mobile phone network to each of the recipients;

?

receive, each device recipient location send, the start message of synchronization sent by the request device service;

?

identify, each device recipient location shipment, the request device for message issuing service;

?

compose, each device of recipient location shipment, a confirmation response from performance of the service in a data message comprising the type of message that is integrated and the IMEI of the device service request if the location sending device accept the location request and optionally a token randomly generated to identify the session;

?

compose, each device of recipient location shipment, a denial response from performance of the service in a data message comprising the type of message that is integrated and the IMEI of the device service request if the location sending device does not accept the location request and optionally a token randomly generated to identify the session;

?

send, each device consignee location dispatch, a realization response from service through the mobile phone network to the device service request;

?

receive the device service request, the completion response message of the service of each location sending device addressee;

b)

if a location sending device sending a confirmation of performing service to the service request device, make a location request, comprising:

?

make up the device service request, a location request message integrating it into a data message comprising the type of message which is integrated and, optionally, a token to identify the session, and Start Time, End Time and temporary latency when concerned of a request in Tracking Mode;

?

send the device service request, the location request message to via the mobile telephone network to the sending device of location with which it is synchronized;

?

receive, the sending device location, the location request message;

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       \ global \ parskip0.950000 \ baselineskip
    

?

perform the device sending location, a location query to a system of satellite location;

?

receive, the sending device location, the location of said device of the system satellite location to which the query was made;

?

make up the device location sending, a location message integrating it into a data message comprising the current location of the device of sending location given in geographical coordinates or in graphic format using an MMS;

?

send, the sending device location, the location message through the network of mobile telephony to each of the request devices for service with which it is synchronized;

?

receive the device service request, the device location message from location shipping;

C)

finish synchronization, comprising:

?

compose, one of the communication devices, a synchronization end message integrating it into a data message comprising the type of message which is integrated and, optionally, the token that identifies the session;

?

send, the device that composed the message, the end synchronization message through the mobile phone network to the device with which it is in communication;

?

receive, the device in communication, the end synchronization message;

?

compose, the device in communication, a confirmation message of completion of the synchronization by integrating it into a data message comprising the type of message that is integrated and, optionally the token that Identify the session;

?

send, the device in communication, the confirmation message of completion of the synchronization through the mobile phone network to the device that sent the end of sync message;

?

receive, the device that sent the end of sync message, the message from Confirmation of completion of device synchronization in communication.

In a preferred embodiment, the message of location additionally includes telemetry information obtained through sensor modules integrated in the device location shipping. These modules can be sensors of temperature, blood pressure sensors, frequency sensors cardiac, glucose level sensors, etc.

In a preferred embodiment, before a confirmation of service performance of the sending device of location, the service request device performs a location request a configurable number of times. With this realization would cover the operating mode of Location Punctual and Tracking mode.

In a preferred embodiment, the device location sending performs location queries to the system satellite location being the start time, the instant of completion and temporary latency previously defined. This embodiment would respond to operation in the mode of Tracing.

In a preferred embodiment, the device location send sends location messages only when said device exceeds the boundaries of a geographical area previously defined. This embodiment would respond to the operation In Out of Zone Alarm mode.

In a preferred embodiment, the device location send incorporates an alert message in the message location if the location sending device does not detects movement during a predefined time interval. This realization would respond to the operation in Absence mode of Movement or accident.

In a preferred embodiment, the device location send incorporates an alert message in the message location if the location sending device detects an acceleration change of at least 0.7 \ cdG. This realization would respond to the operation in the absence of movement mode or Accident.

The demand-based location system based on standard mobile phone terminals and message exchange, which uses devices with means of access to the telephone network mobile to establish communications between peers includes:

\ circ

a request device for service comprising configured processing means for:

?

select at least one recipient to whom a request for location;

       \ newpage
    

       \ global \ parskip1.000000 \ baselineskip
    

?

compose a start message from synchronization by integrating it into a data message comprising the type of message that is integrated and the IMEI of the device service request and, optionally, a password entered by the Username;

?

send the start message of synchronization through the mobile phone network to each of the recipients;

?

receive a reply message of carrying out the service of each sending device of recipient location;

?

if the sending device of location sent a service completion confirmation to service request device, said request device of service makes a location request, comprising:

-

compose a request message from location by integrating it into a data message comprising the type of message that is integrated and, optionally, a token for identify the session, and Start Time, End Time and temporary latency in the case of a request in Follow-up Mode to;

-

Send the location request message through the network of mobile telephony to the location sending device with which is synchronized;

-

receive a location message from location sending device understanding the location current location sending device given in coordinates geographical or in graphic format through an MMS;

?

if the request device service ends the connection, the request device for service is configured to:

-

compose an end message of synchronization by integrating it into a data message comprising the type of message that is integrated and, optionally the token that identify the session;

-

Send the end of synchronization message over the telephone network mobile to the location sending device;

-

receive a confirmation message from completion of the synchronization of the sending device of location;

?

if the recipient ends the connection, the service request device is configured for:

-

receive an end message from synchronization of the location sending device;

-

compose a confirmation message of End of synchronization by integrating it into a message data comprising the type of message that is integrated and, optionally the token that identifies the session;

-

Send the synchronization completion confirmation message to via the mobile telephone network to the sending device of location;

\ circ

a request device for service comprising configured processing means for:

?

receive the start message from synchronization sent by the request device service;

?

identify the device message issuing service request;

?

compose a response from confirmation of service completion in a data message comprising the type of message that is integrated and the IMEI of the service request device if the sending device of location accepts the location request and, optionally, a randomly generated token to identify the session;

?

compose a response from denial of service performance in a data message comprising the type of message that is integrated and the IMEI of the service request device if the sending device of location does not accept the location request and, optionally, a randomly generated token to identify the session;

?

send your reply from realization of the service through the mobile telephone network at service request device;

?

if the sending device of location sent a service completion confirmation to service request device, make a request for location, comprising:

-

receive the request message from location sent by the request device of service;

-

make a location query to a satellite tracking system;

-

receive the location of said satellite tracking system device you made the consultation;

-

compose a location message integrating it into a data message understanding the location current coordinate location sending device geographical;

-

Send the location message through the mobile telephone network to each of the service request devices with which is synchronized;

?

if the sending device of location ends the connection, the sending device of Location is configured to:

-

compose an end message of synchronization by integrating it into a data message comprising the type of message that is integrated and, optionally the token that identify the session;

-

Send the end of synchronization message over the telephone network mobile to the service request device;

-

receive a confirmation message from completion of the request device synchronization service;

?

if the request device service ends the connection, the sending device of Location is configured to:

-

receive an end message from synchronization of the service request device;

-

compose a confirmation message of End of synchronization by integrating it into a message data comprising the type of message that is integrated and, optionally the token that identifies the session;

-

Send the synchronization completion confirmation message to via the mobile telephone network to the request device of service.

In a preferred embodiment, the means of location sending device processing are configured to incorporate telemetry information in the message location where said information has been obtained by sensor modules integrated in the sending device of location. These modules can be temperature sensors, blood pressure sensors, heart rate sensors, glucose level sensors, etc.

In a preferred embodiment, before a confirmation of service performance of the sending device of location, the means of processing the device service request are configured to make a request location a configurable number of times after receiving a confirmation of service performance by the device location shipping. With this embodiment, the mode of Spot Location operation and Tracking mode.

In a preferred embodiment, the means of location sending device processing are configured to perform location queries to a system satellite location being the start time, the instant of completion and temporary latency previously defined. This embodiment would respond to operation in the mode of Tracing.

In a preferred embodiment, the means of location sending device processing are configured to send location messages only when said device exceeds the limits of a geographical area previously defined. This embodiment would respond to the operation In Out of Zone Alarm mode.

In a preferred embodiment, the means of location sending device processing are configured to incorporate an alert message in the message of location if the location sending device does not detect movement during a predefined time interval. This realization would respond to the operation in Absence mode of Movement or accident.

In a preferred embodiment, the device location shipping will comprise detection sensors movement configured to detect movement variations previously configured and experienced by the device location shipping. In this embodiment and preferably, The processing means of the location sending device are configured to incorporate an alert message in the location message if the location sending device detect any of the movement variations previously configured. This embodiment would respond to operation in mode Absence of Movement or Accident.

Possible device applications are multiple. By way of example, and without being limiting of the invention, The device can be used for locating people Dependents: older people, children, people with the disease of Alzheimer's, etc., so that the person's social environment is endowed dependent on technical assistance with autonomous operation with Regarding third parties. In parallel with the functionalities of location the device object of the invention presents integration potential of vital constant measures (temperature, heart rate, etc.) so that it serves to, in parallel to location requests, monitor on demand at dependent people. Another possible direct application would be in the fleet management in logistics or transport companies for vehicle location

Brief description of the drawings

Then, to facilitate the understanding of the invention, by way of illustration but not limitation, will be described an embodiment of the invention that refers to a figure.

Figure 1 shows a global scheme of context of system operation.

Figure 2 shows the relationships of dependency between T1 and T2.

Figure 3 shows, in the form of a diagram of times, a possible realization of the protocol established for the synchronization of terminals T1 and T2.

Figure 4 shows, in the form of a diagram of times, a possible realization of the protocol established for the End of synchronization of terminals T1 and T2.

Figure 5 shows, in the form of a diagram of times, a possible realization of the protocol established for the message exchange in location operation mode punctual.

Figure 6 shows, also in the form of timing diagram, a possible realization of the protocol set for message exchange in the mode of tracking operation.

Figure 7 shows a possible embodiment of the protocol established for the exchange of messages in the mode of out of zone alarm operation.

Figure 8 shows a possible embodiment of the protocol established for the exchange of messages in the mode of operation absence of movement or accident.

Figure 9 shows, in one embodiment Preferred, the content and extent of text messages sent for each type of message.

Figure 10 shows, in one embodiment preferably, the main screen of terminal T2 in which They look at the different options of the main menu.

Figure 11 shows, in one embodiment preferably, the screen of the location device on which shows a list of terminals with which the synchronization.

Figure 12 shows, in one embodiment preferably, the screen of the location device on which show the form to add a new terminal to the list of synchronization.

Figure 13 shows, in one embodiment Preferred, the T1 terminal screen showing the location of the device monitored by geographical coordinates.

Figure 14 shows, in one embodiment Preferably, the T2 terminal screen showing a map on which the location of the monitored device appears.

Figure 15 shows, in one embodiment preferred, the main screen terminal T2 in which they are observed the different options of the main menu.

Detailed description of one embodiment

In a preferred embodiment, the system will have the characteristics described below. The system It will consist of two devices with means of access to the network of mobile telephony: the service request device 1 and the location sending device 2, as well as means of 5, 6 processing on each of the devices configured for perform the stages corresponding to the service request and to location shipping. On the other hand, at least one of the devices, the one that acts as T2 or sending device for location 2, will comprise a satellite location module 4 which may be embedded in the device 2 itself, contemplating the possibility that said satellite location module 4, preferably GPS, be connected to the sending device of location 2 through other mechanisms: direct connection by cable, Bluetooth, etc. The service request device 1 acting as T1 will not have additional hardware requirements. Do not However, in some contexts it may be interesting to have Internet connection via WAP, GPRS, EDGE, D-AMPS, PHS, WiFi or other standards.

Figure 1 shows a global scheme of context of system operation. The system consists of Two devices with means of access to the mobile telephone network: the service request device 1 (T1), and the device for sending location 2 (T2), in which some means of 5, 6 processing in each of them. Making use of the networks of existing mobile telephony (GSM, GPRS, UMTS, etc.), the Location is based on the exchange of text messages (SMS) and / or multimedia (MMS) between both devices following a protocol preset Although it would not be strictly necessary, both T1 as T2 can connect to the Internet through a data connection (either through the mobile phone network itself, through Wi-Fi, or through any other link of communication) to collect information from AGPS and / or cartographies complementary.

Using an entity / relationship scheme, the Figure 2 shows the dependency relationships between T1 and T2 It is noted that T1 can monitor several (N) terminals T2 and, at in turn, T2 can be monitored by several (M) T1 terminals.

It is worth mentioning the figure in more detail 9 which describes the body of the messages in one embodiment based on SMS exchange. Considering the limitation associated with the length of this type of messages (160 characters alphanumeric), each message contains a set of fields encoded in ASCII and separated by the character ";". He Supervision Request message (Figure 9 M1) consists of a first field (T) that identifies the type of message; one second field (IMEI) that identifies the IMEI of terminal T1; and a third field (Password) that identifies a personal password entered by the Username. The Location Request message (Figure 9 M2) consists of a first field (T) that identifies the mode of requested operation; a second field that contains a code (Token) randomly generated by terminal T1 to identify the session and that expires when the synchronization is finished; The time Start and end of supervision (Start Time and End Time, respectively); and temporal latency (Inter). The message of Confirmation (Figure 9 M3) consists of a first field (T) that identify the type of message; a second field (IMEI) that identifies the IMEI of terminal T1; and a third field that contains the token generated for the session (Token). The Denial message Service (Figure 9 M4) contains three fields: the type of message (T); the token (Token); and a third party that contains a error code (Error) that identifies the reason for Refuse the service. The Location message (Figure 9 M5) consists eight fields: the type of message (T); the token (Token); the that store the coordinates of the terminal (Latitude and Longitude, respectively); the date and time the data was taken from location (Date and Time, respectively); a code that identifies the ordinal of the message sent (Num); and finally a complementary data field that could contain data from telemetry Finally, the End of Supervision message (Figure 9 M6) contains only the type of message (T) and the token used for communication (Token).

Note that, in addition, the protocols of mobile communications ensure that all messages that are exchange during the process carry embedded in the header the number that identifies the telephone line associated with the device corresponding and which, in turn, is included in the SIM card (Subscriber Identity Module) delivered by the operator.

The terminal that accepts the T1 role shows initially a screen in which a menu will be displayed that will allow you to select any of the following options (Figure 10):

T1.a)

Synchronization and display of the List of Devices with which the synchronization phase has been completed. Through this option you can access an agenda that allows list the devices with which the phase of synchronization (Figure 11). Likewise, from this same option of menu is allowed to synchronize new devices and / or break the existing sync link. The devices are left identified by a profile that contains, among other data associated (Figure 12), the telephone line number corresponding, a username, the type of messages defined for exchange (SMS or MMS), etc. The Device List is keeps stored in the mobile terminal even after disconnection or When the battery runs out.

T1.b)

Location request in Spot mode. This menu option presents the List of Devices that currently They are being supervised. When selecting a device, T1 contact him and the application process begins spot mode location.

T1.c)

Location request in Tracking mode. This menu option presents the List of Devices that currently They are being supervised. Selecting a device will display a form that allows you to enter the start time and end of the tracking, as well as the temporary latency of sending location. After selecting a device and entering these data, T1 contacts T2 and the application process begins location in tracking mode.

T1.d)

Out of Zone Alarm Request. This option of menu presents the List of Devices that are currently being supervised When selecting a device, T1 contacts it and The out of zone alarm request process begins. To once a location event is triggered informing T1, it it can generate a vibration on the T2 device and even send an alarm to any type of control center if it were available.

T1.e)

Motion Absence Alarm Request or Accident. This menu option presents the List of Devices that They are currently being supervised. When selecting a device, T1 contacts it and the process of Out of zone alarm request. At the same time that a location event informing T1, you can generate a vibration on the T2 device and even send an alarm to any type of control center if it were available.

T1.f)

View data received from the device / s with which synchronization was performed. Be this option is available as an Inbox, in which they store the messages received from the device (s) that are being supervised / s. Messages may appear listed according to various sorting criteria, and identified by date, and reception time, as well as by the device identifier T2 associated.

T1.g)

View messages and traces generated by the application during the execution of the service. From this option you can monitor the status of established communications displaying the messages generated during the execution of the service and / or possible errors in communication.

On the other hand, T2 initially shows a screen in which a menu will be displayed that will allow you to select any of the following options (Figure 15):

T2.a)

List of Supervisors: from this menu option you can list the devices with which T2 is synchronized to receive location requests. So similar to the T1 Device List (Figure 11), in this section you can manually unsubscribe with Any of the stored devices. The List of Supervisors it is stored on the device even after disconnection or When the battery runs out.

T2.b)

Pending notices: where are the Supervision requests pending confirmation. Available this option as an Inbox, in which the Supervision requests received. From this menu option you may accept or reject pending supervision requests. In both cases a confirmation or denial message of service to terminal T1 requesting supervision. If the service is accepted, the identifiers of the T1 device pass to be part of the List of Supervisors.

T2.c)

View messages and traces generated by the application during the execution of the service: from this option you can monitor the status of established communications displaying the messages generated during the execution of the service and / or possible errors in communication.

So, the synchronization process between both devices will consist of adding a new terminal to the List of T1 Devices through option T1.a. This request is You must confirm on device T2 through option T2.b. To start synchronization, access the Device List through T1.a and, through the appropriate menu options, add a new device by entering your phone number and data associated (Figure 12). Whether T2 accepts the supervision request as if rejecting it (via T2.b) will send a message from answer, and T1 will receive a warning on the screen. From this one At the moment, T2 is available in the Device List (accessible through T1.a) and in the other options available. If you want to change the configuration and / or data associated with a determined device, said device must be selected to through T1.a and use the different options available from configuration, being able to modify, for example, the mode of desired response (SMS or MMS).

After adding data to the calendar corresponding to a device, and once the synchronization, you can display the Device List with the that T1 is synchronized (T1.a), as well as performing location requests in a timely manner, monitoring, alert out of zone, and absence of movement (through options T1.b, T1.c, T1.d, and T1.d, respectively).

To check the messages received by carriers of the location data, access the menu T1.e. After select the device you want to monitor, a screen indicating the dates and times at which they went taken the locations received for the device selected. After selecting one of them, and in the case that the communication between both devices has been fixed using SMS text messages, you can display on screen coordinates of the location of T2 (Figure 13). If the device T1 has an Internet connection (via WAP, GPRS, EDGE, TDMA, WiFi or similar), the obtained coordinates can be used to index in any of the web services available on the Internet that offer cartographies (such as and without being limiting of the invention, those offered by OpenStreet Maps, Google Maps, etc.), so that it can be displayed on the screen a map on which a marker that identifies the position appears (Figure 14). If the T1 device does not have an Internet connection, you can make use of cartographies stored internally in the own device. In case of receiving the location embedded in an MMS type message, T1 may not need connect to the Internet or check the cartography stored in the device itself, but will directly display the image received showing the location (Figure 14).

To end the supervision on a T2 device determined this would be selected in the List of Devices and would be removed using the menu options available. At the end of the synchronization of a device, Send a message to T2 indicating the End of Supervision. The list of supervised patients remains stored in the device even when the application is closed or the device is turned off by lack of battery

Once the invention has been clearly described, notes that the particular realizations above described are subject to modifications of detail provided that do not alter the fundamental principle and the essence of the invention.

Claims (15)

1. On-demand location procedure based on standard mobile telephone terminals and message exchange, which uses devices with means of accessing the mobile telephone network to establish peer-to-peer communications characterized in that it comprises the following stages:

to)

synchronize the devices that are going to establish communication, comprising:

?

select the device service request (1), at least one recipient to whom make a location request;

?

make up the device service request (1), a synchronization start message integrating it into a data message comprising the type of message which is integrated and the IMEI of the service request device (one);

?

send the device service request (1), the synchronization start message to through the mobile phone network to each of the recipients;

?

receive, each device sending location (2) recipient, the start message of synchronization sent by the service request device (one);

?

identify, each device sending location (2) recipient, the request device of service (1) sender of the message;

?

compose, each device of sending location (2) recipient, a response from confirmation of service completion in a data message comprising the type of message that is integrated and the IMEI of the service request device (1) if the sending device Location (2) accepts the location request;

?

compose, each device of sending location (2) recipient, a denial response of carrying out the service in a data message comprising the type of message that is integrated and the IMEI of the device service request (1) if the location sending device (2) does not accept the location request;

?

send, each device sending location (2) recipient, a realization response of the service through the mobile telephone network to the device service request (1);

?

receive the device service request (1), the completion response message of the service of each location sending device (2) addressee;

b)

if a location sending device (2) sent a confirmation of performing service to the service request device (1), make a location request, comprising:

?

make up the device service request (1), a location request message integrating it into a data message comprising the type of message that is integrated;

?

send the device service request (1), the location request message to via the mobile telephone network to the sending device of location (2) with which it is synchronized;

?

receive, the sending device location (2), the request message for location;

?

perform the device sending location (2), a location query to a system of satellite location (3);

?

receive, the sending device location (2), the location of said device (2) of the satellite tracking system (3) to which the query;

?

make up the device location send (2), a location message integrating it in a data message comprising the current location of the location sending device (2) in coordinates geographical;

?

send, the sending device location (2), the location message over the network from mobile telephony to each of the request devices for service (1) with which it is synchronized;

?

receive the device service request (1), the location message of the location sending device (2);

C)

finish synchronization, comprising:

?

compose, one of the communication devices (1, 2), an end message of synchronization by integrating it into a data message comprising the type of message that is integrated;

?

send, the device that composed the message (1, 2), the end of synchronization message to through the mobile phone network to the device with which it is in communication (2, 1);

?

receive, the device in communication (2, 1), the end synchronization message;

?

compose, the device in communication (2, 1), a confirmation message of completion of synchronization by integrating it into a data message comprising the type of message that is integrated;

?

send, the device in communication (2, 1), the confirmation message of completion of synchronization through the mobile phone network to device (1, 2) that sent the end of synchronization message tion;

?

receive, the device (1, 2) that sent the end of sync message, the message from Confirmation of completion of device synchronization in communication (2, 1).

2. On-demand location procedure based on standard mobile telephone terminals and message exchange, according to claim 1, characterized in that the location message additionally comprises telemetry information obtained by means of sensor modules integrated in the location sending device (2) . 3. On-demand location procedure based on standard mobile telephone terminals and message exchange, according to any of claims 1-2, characterized in that upon confirmation of service performance of the location sending device (2), the device for Service request (1) makes a location request a configurable number of times. 4. On-demand location procedure based on standard mobile telephone terminals and message exchange, according to any of claims 1-2, characterized in that the location sending device (2) makes location queries to the satellite location system ( 3) being the start time, the end time and the temporary latency previously defined. 5. On-demand location procedure based on standard mobile telephone terminals and message exchange, according to any of claims 1, 2 and 4, characterized in that the location sending device (2) sends location messages only when said device ( 2) exceed the limits of a previously defined geographical area. 6. On-demand location procedure based on standard mobile telephone terminals and message exchange, according to any of claims 1-2, characterized in that the location sending device (2) incorporates an alert message in the location message if the location sending device (2) does not detect movement during a predefined time interval. 7. On-demand location procedure based on standard mobile telephone terminals and message exchange, according to any of claims 1, 2 and 6, characterized in that the location sending device (2) incorporates an alert message in the message location if the location sending device (2) detects an acceleration change of at least 0.7 \ cG. 8. Demand tracking system based on standard mobile telephone terminals and message exchange, which uses devices with means of access to the mobile telephone network to establish peer-to-peer communications characterized in that it comprises:

\ circ

a request device for service (1) comprising processing means (5) configured to:

?

select at least one recipient to whom a request for location;

?

compose a start message from synchronization by integrating it into a data message comprising the type of message that is integrated and the IMEI of the device service request (1);

?

send the start message of synchronization through the mobile phone network to each of the recipients;

?

receive a reply message of carrying out the service of each sending device of location (2) recipient;

?

if the sending device of location (2) sent a service completion confirmation to the service request device (1), said device of service request (1) makes a location request, comprising:

-

compose a request message from location by integrating it into a data message comprising the type of message that is integrated;

-

Send the location request message through the network of mobile telephony to the location sending device (2) with the that is synchronized;

-

receive a location message from location sending device (2) comprising the location current, location sending device (2);

?

if the request device service (1) terminates the connection, the request device for Service (1) is configured to:

-

compose an end message of synchronization by integrating it into a data message comprising the type of message that is integrated;

-

Send the end of synchronization message over the telephone network mobile to the location sending device (2);

-

receive a confirmation message from completion of the synchronization of the sending device of location (2);

?

if the recipient ends the connection, the service request device (1) is configured for:

-

receive an end message from synchronization of the location sending device (2);

-

compose a confirmation message of End of synchronization by integrating it into a message data comprising the type of message that is integrated;

-

Send the synchronization completion confirmation message to via the mobile telephone network to the sending device of location (2);

\ circ

a request device for service (2) comprising processing means (6) configured to:

?

receive the start message from synchronization sent by the service request device (one);

?

identify the device service request (1) sender of the message;

?

compose a response from confirmation of service completion in a data message comprising the type of message that is integrated and the IMEI of the service request device (1) if the sending device Location (2) accepts the location request;

?

compose a response from denial of service performance in a data message comprising the type of message that is integrated and the IMEI of the service request device (1) if the sending device Location (2) does not accept the location request;

?

send your reply from realization of the service through the mobile telephone network at service request device (1);

?

if the sending device of location (2) sent a service completion confirmation to the service request device (1), make a request location, comprising:

-

receive the request message from location sent by the service request device (one);

-

make a location query to a satellite tracking system (3);

-

receive the location of said device (2) of the satellite tracking system (3) to which made the query;

-

compose a location message integrating it into a data message understanding the location current location sending device (2) in coordinates geographical;

-

Send the location message through the mobile telephone network to each of the service request devices (1) with which is synchronized;

?

if the sending device of location (2) ends the connection, the sending device of location (2) is configured to:

-

compose an end message of synchronization by integrating it into a data message comprising the type of message that is integrated;

-

Send the end of synchronization message over the telephone network mobile to the service request device (1);

-

receive a confirmation message from completion of the request device synchronization service (1);

?

if the request device service (1) ends the connection, the sending device of location (2) is configured to:

-

receive an end message from service request device synchronization (one);

-

compose a confirmation message of completion of synchronization by integrating it into a message data comprising the type of message that is integrated;

-

Send the synchronization completion confirmation message to via the mobile telephone network to the request device of service (1).

9. Demand tracking system based on standard mobile telephone terminals and message exchange, according to claim 8, characterized in that the processing means (6) of the location sending device (2) are configured to incorporate telemetry information into the location message where said information has been obtained by means of sensor modules integrated in the location sending device (2). 10. Demand tracking system based on standard mobile telephone terminals and message exchange, according to any of claims 8-9, characterized in that the processing means (5) of the service request device (1) are configured to perform a location request a configurable number of times after receiving a confirmation of service performance by the location sending device (2). 11. On-demand location system based on standard mobile telephone terminals and message exchange, according to any of claims 8-9, characterized in that the processing means (6) of the location sending device (2) are configured to perform location queries to a satellite location system (3) being the start time, the end time and the temporary latency previously defined. 12. Demand location system based on standard mobile telephone terminals and message exchange, according to any of claims 8, 9 and 11, characterized in that the processing means (6) of the location sending device (2) are configured to send location messages only when said device exceeds the limits of a previously defined geographical area. 13. Demand tracking system based on standard mobile telephone terminals and message exchange, according to any of claims 8-9, characterized in that the processing means (6) of the location sending device (2) are configured to incorporate an alert message in the location message if the location sending device (2) does not detect movement during a predefined time interval. 14. Demand tracking system based on standard mobile telephone terminals and message exchange, according to any of claims 8-9, characterized in that the location sending device (2) comprises motion detection sensors configured to detect variations of movement previously configured and experienced by the location sending device (2). 15. Demand tracking system based on standard mobile telephone terminals and message exchange, according to claim 14, characterized in that the processing means (6) of the location sending device (2) are configured to incorporate an alert message in the location message if the location sending device (2) detects any of the previously configured movement variations.