Method and device for guiding a user of a mobile terminal device to a destination

Abstract

Method for guiding a user (16) of a mobile terminal device (14) with a navigation device (24) in a public mobile network (10) comprising the following method steps: a) Requesting (100) location data (38) of a place of interest to the user (16) with the mobile terminal (14) from a service facility (40) for location data (38) comprising transmitting formats required for the navigation device (24) of the mobile terminal (14) or transmitting an identity of the navigation device (24) of the mobile terminal (14) to the service facility (40), b) Locating (104) the mobile terminal (14) by a locating device (52) of the service facility (40), which forwards the located position of the mobile terminal (14) to the service facility (40), c) Determining (106) the position data (38) of the point of interest (POI) in a predefinable geographical environment of the located mobile terminal (14) by the position data service facility (40) (38), d) Converting the position data (38) into a format suitable for the navigation device (24) of the mobile terminal (14), e) Transmission (110) of the location data (38) of the location of interest to the user (16) by the location data service facility (40) via the mobile network (10) to the mobile terminal (14), f) Transfer (114) of the position data (38) of the location of interest to the user (16) received by receiving means (66) of the mobile terminal (14) to the navigation device (24) of the mobile terminal (14), and g) Use (116) of the transmitted position data (38) of the location of interest to the user (16) by the navigation device (24) of the mobile terminal (14) to display the location of interest to the user (16) or to guide (26) to the location of interest to the user (16) by means of a display (22) of the mobile terminal (14).

Description

Technical area

[0001] The invention relates to a method for route guidance for a user of a mobile radio terminal with a navigation device in a public mobile radio network, comprising the following method steps: a) transmission of position data of a location by a position data service facility via the mobile radio network to the mobile radio terminal, b) Transfer of the location data to the navigation device, c) Use of the position data by the navigation device to display the location or to guide the user to the location by means of a display on the mobile radio terminal, and d) Requesting the position data of a point of interest (POI) of the user from the position data service facility using the mobile terminal.

[0002] Furthermore, the invention relates to a destination guidance device for a user of a mobile radio terminal in a public mobile radio network, comprising a) a navigation device in the mobile radio terminal for displaying a location or guidance to the location for the user by means of a display on the mobile radio terminal, b) a service device for transmitting position data of a location for the navigation device via the mobile radio network to the mobile radio terminal, c) an interface in the mobile radio terminal for transferring received position data of the location to the navigation device, and d) means for requesting the position data of a point of interest (POI) of the user from the service facility using the mobile radio terminal.

[0003] Furthermore, the invention relates to a service device for transmitting position data for a mobile radio terminal, which contains a navigation device for displaying a location or route guidance to the location for a user by means of a display of the mobile radio terminal and an interface for transferring received position data of the location to the navigation device, wherein transmission means for transmitting position data of a location for the navigation device via the mobile radio network to the mobile radio terminal and means for requesting the position data of a location (PO1) of interest to the user by the mobile radio terminal are provided for the service device.

[0004] The invention provides for the use of a mobile radio terminal for a public mobile radio network, which itself is not the subject of the invention. Such a mobile radio terminal contains a) a navigation device for displaying a location or guidance to the location for a user by means of a display on the mobile radio terminal, b) receiving means for receiving position data of a location for the navigation device via the mobile radio network from a service device for position data of the location, c) an interface for transferring received position data of the location to the navigation device, and d) means for requesting the location data of a point of interest (POI) of the user from the service device.

[0005] US 6 529 143 B2 discloses, as the closest prior art, a corresponding method and devices for providing POI data for a mobile radio terminal via a mobile radio network from a POI server. State of the art

[0006] Navigation systems for motor vehicles, hikers, and boaters have been increasingly used recently. Such well-known navigation systems typically use GPS (Global Positioning System) for satellite-based positioning of a current location and have stored maps. A user enters a destination with a single control. The user is then guided to the destination using a display. A route to the destination is calculated using the stored maps, shown on the display, and continuously compared with the current location. In the event of deviations, a new route can be calculated.

[0007] In addition to traffic connections and topographical information, such a navigation system usually also stores a number of points of interest (POIs) that are of interest to the user. Points of interest (POIs) can serve to satisfy travel-specific needs or everyday needs, such as restaurants, hotels, gas stations, ATMs, or parking garages. Furthermore, POIs can point to emergency contact points, such as auto repair shops, pharmacies, or hospitals, or to tourist attractions and leisure activities, such as sports stadiums, museums, swimming pools, and tourist attractions. Some navigation systems display POIs as small icons in a map.

[0008] Furthermore, mobile phones are known for communication and the use of services via a mobile network, which have an integrated GPS navigation system. Modern mobile phones with sufficiently large graphic displays also enable the use of so-called route planners. Such route planners are already well known for PCs and are implemented by computer programs that calculate and display a route between a given starting point and destination. Route planners are either installed completely on a device with the appropriate map material or offered as an internet service over the internet, such as "Google Maps" from Google Inc. With internet-enabled mobile devices, it is therefore possible to use such an internet service as route guidance to a destination. Route planners can also usually display a number of POIs for a user.

[0009] Furthermore, the transmission of position data of a location, such as a postal address or geographical coordinates, via a mobile network to a navigation system is known. For example, the German patent application DE 100 48 576 A1 describes a method for transmitting data to a satellite-based navigation system with a GPS module in a motor vehicle. For this purpose, a route is first planned using an external computer system for specified starting, intermediate, and final destinations. The calculated position data or location coordinates of the route are then transmitted as SMS short messages (SMS: Short Message Service) via a mobile network to the navigation system with a mobile interface. The navigation system receives the position data from the SMS short messages and provides route guidance for a user.This avoids the user having to laboriously enter the position data of various destinations into the navigation system.

[0010] Accordingly, in so-called "off-board" navigation systems, a destination address is transmitted from a mobile device via a mobile network to a central server. The central server has map data and calculates the route. Route information is then transmitted to the mobile device and displayed for a user by the device. In such a system, POIs can be stored centrally on the server and presented to the user.

[0011] The transmission of location coordinates via a mobile network to a tracking system is also known for GPS tracking of a moving object, such as a motor vehicle. A GPS tracking module installed in the vehicle determines the current location of the vehicle continuously or at specific time intervals. A mobile radio module then transmits the corresponding location coordinates via a mobile network to a terminal device. A mobile radio terminal connected to the GPS tracking module via an interface, e.g., Bluetooth, can also be used for this purpose. The terminal device displays the current location of the vehicle to a user using a navigation or tracking device.

[0012] A disadvantage of the methods and devices mentioned is that only a very limited number of places of interest can be stored and displayed for a user. The limited storage capacity of mobile navigation systems or mobile devices with a navigation device is offset by the unmanageable number of needs and wishes of a user regarding a specific location. With navigation systems that use a central server, there is no storage space limit, but even here the user is only offered a limited selection of POIs. Often a user is looking for a specific specialty store, such as a bakery or a bookstore, or a restaurant serving a specific cuisine, e.g. fast food or Italian cuisine, without knowing the exact address.Such a search is not possible with the aforementioned mobile devices with navigation equipment or mobile navigation systems, since these user-specific POIs are not provided and for other destinations an exact address or location is always required.

[0013] US 6 529 143 B2 discloses, as already explained above, a corresponding method and devices for providing POI data for a mobile terminal via a mobile network from a POI server. After a user has specified POI classes and criteria, the position of the mobile terminal is determined using GPS or radio cell-based methods. Subsequently, a search for corresponding POI data is performed in a mass storage device of the mobile terminal, and the position and criteria are transmitted via the mobile network to a POI server. The POI server searches a database for new POI data based on the position and criteria and finally transmits only POI data not yet contained in the mass storage device of the mobile terminal in their entirety to the mobile terminal. The user can now view route guidance to, or a map with, a new, selected POI on the mobile terminal's display.

[0014] US 2003 / 0 050 075 A1 discloses a system and a method for transmitting the address and other information of a POI from a service to a mobile terminal via a mobile network. Upon a POI request from a user to the service, in which case, in particular, a voice recognition device may also be used, the current position of the mobile terminal is first determined. For this purpose, in addition to GPS data from the mobile terminal or radio cell-based positioning, additional information from the user is recognized and used via the voice recognition device. Subsequently, for example, route guidance to the POI is possible via the service, with directions being transmitted from the service to the mobile terminal via the mobile network and displayed by the mobile terminal.

[0015] US 2002 / 0 052 786 A1 describes an information system for providing regional information to a user of an internet-enabled mobile device based on the current position of the mobile device. Upon request from the user, POIs in the immediate vicinity are determined, and corresponding addresses or a map with the POI entered and a highlighted route to this POI are transmitted to the mobile device via the internet. The position of the mobile device is determined using GPS or via radio cells and a pilot signal from the mobile device.

[0016] US Pat. No. 6,853,911 B1 describes a mobile device with a navigation system and a location determination module, in which local geographical data is transmitted from a mobile network to the mobile device depending on the user's position. The navigation system uses this data to inform the user. The user's position can be transmitted to other mobile devices via SMS.

[0017] US 2007 / 0 281 716 A1 describes a location-based management system for a social network for mobile phone subscribers and mobile devices with integrated positioning. The mobile devices are linked to a server via a mobile network. The server transmits a map of the mobile device's surroundings to each mobile device in a group of mobile phone subscribers, including the positions of other nearby mobile devices in the group. Upon request, POIs set by other members in the vicinity of a mobile device are also displayed on the map according to selected categories.

[0018] US Pat. No. 7,177,651 B1 discloses a system and method for transmitting the position of a first mobile or stationary telephone to another mobile telephone. A position control module in a telecommunications network stores the position data of the first telephone in a memory. Upon request from the second telephone, the position data is transmitted to the second mobile telephone via SMS. The second mobile telephone determines its position using GPS or based on radio cells and calculates the distance to the first telephone using an algorithm.

[0019] US 2006 / 0 293 846 A1 discloses a method and device for displaying information about POIs marked on a printed map. Each POI has an identifier that can be transmitted to a database via SMS using a mobile phone. The database then sends current information about the POI to the mobile phone or a navigation device.

[0020] US 2006 / 0 199 612 A1 describes a telecommunications method for telecommunications via a public mobile network. Subscribers receive a mobile terminal equipped with a GPS unit and a navigation system. The current position of a mobile terminal is transmitted to the other mobile terminals via a data connection or SMS. The other mobile terminals are displayed as icons on a map on a touchscreen, and they can be called by touching the respective icon.

[0021] DE 10 2004 005 152 A1 also discloses methods and devices for outputting position data to at least one mobile terminal. Raw data is acquired using a vehicle's navigation unit, from which position data is extracted, which is then processed into extended position data based on vehicle-specific operating data. The extended position data is converted into a standardized format suitable for data transmission and transmitted to the mobile terminal via a data bus. Furthermore, DE 10 2004 005 152 A1 discloses a device provided for implementing the method. Disclosure of the invention

[0022] The object of the invention is to improve a method for route guidance for a user of a mobile radio terminal with a navigation device in such a way that full compatibility with any mobile radio terminal, even mobile radio terminals without a GPS receiver, can be achieved.

[0023] For the technical solution, a method of the type mentioned above for route guidance for a user of a mobile radio terminal with a navigation device in a public mobile radio network is proposed, having the features of claim 1. Advantageous embodiments of the method are characterized in subclaims 2 to 6.

[0024] Furthermore, the object is proposed with a destination guidance device of the type mentioned at the outset for a user of a mobile radio terminal in a public mobile radio network having the features of claim 7.

[0025] The problem is also solved by a service device of the type mentioned at the outset for transmitting position data for a mobile radio terminal having the features of claim 8.

[0026] The invention is based on the principle of requesting position data of a point of interest (POI) of interest to the user from a service device via the mobile terminal when required and making this data available to the navigation device in the mobile terminal for route guidance. Position data of a POI refers to all data that describe or specify a precise geographical position of the POI. The service device can be located entirely or partially within the mobile network or outside, e.g., in another data network, and has access to address and position databases in order to transmit corresponding position data to the mobile terminal upon request from the mobile terminal.

[0027] This method enables a user to be guided through the navigation system in the mobile device, even to POIs not stored in the navigation system. The user neither needs to know nor enter location data of a POI, such as an address. The location data is then requested from the service device and forwarded directly to the navigation system via the mobile network and the mobile device. This enables very user-friendly and effective route guidance using the navigation system in the mobile device. Depending on their needs and preferences, the user is guided to a location of interest, such as a specialty store or a restaurant with a special cuisine.

[0028] The route guidance device and service device, as well as the mobile radio terminal used, each have means for the mobile radio terminal to request position data of a location of interest to the user from the service device. These devices therefore have the same advantages as the method.

[0029] A further development of the method for route guidance for a user of a mobile radio terminal with a navigation device is achieved by a) Locating the mobile terminal by a locating device, which forwards the located position of the mobile terminal to the service device and b) Determining the position data of the point of interest (POI) in a predefined geographical area of ​​the mobile radio terminal thus located by the position data service device.

[0030] The mobile device can be located at the mobile device or in the mobile network, for example. Using the located position of the mobile device, the service device searches for position data of one or more locations of interest in the vicinity of the mobile device and then transmits the results to the navigation device in the mobile device. By specifying a geographical area around the located mobile device, it is possible to limit the number of POIs determined. In this way, a user can advantageously receive route guidance at any location to one or more locations of interest in the vicinity of their current location, such as a specific, nearest specialist shop. For this, the user needs neither knowledge of their current location nor an address or other position data of the location of interest.

[0031] In an advantageous embodiment of the method according to the invention, the request for position data of the location of interest is made using a short message, such as an SMS, MMS, or EMS, or an interactive word and key recognition system. Short messages, like an interactive word recognition system (IVR: Interactive Voice Response) and a key recognition system, e.g., based on the DTMF (Dual-Tone Multi-Frequency) method, represent widespread and established methods and devices for communication via a mobile radio network. A request for position data can thus be carried out reliably, quickly, and cost-effectively. In principle, a request for position data can also be made with the assistance of an operator to whom the user is connected upon request. Using an email for a request is also conceivable.

[0032] In a further embodiment of the method according to the invention, the mobile terminal is preferably located by the locating device using one or more radio cell identities. By determining the identity of the radio cell (Cell ID) via which the mobile terminal is currently connected to the mobile network, the location of the mobile terminal can be restricted to the geographical area of ​​the radio cell. In addition, the identity of neighboring radio cells can also be determined and taken into account. Such location is generally sufficiently accurate for determining POIs in the vicinity of the mobile terminal. To increase accuracy, it is possible to measure signal strengths or signal propagation times. In this way, the mobile terminal can advantageously be located reliably and with sufficient accuracy without additional, costly components, using only existing resources in the mobile network.

[0033] In an advantageous embodiment of the method according to the invention, the position data of the location of interest is transmitted to the mobile terminal via a short message, such as an SMS, MMS, or EMS. Short messages are a widespread and proven method of data transmission in mobile and landline networks. A short message therefore reliably and cost-effectively transmits position data to the mobile terminal. Furthermore, the automatic transfer of position data from a short message to a navigation system can be easily implemented without user involvement.

[0034] In a further preferred embodiment of the method according to the invention, the position data comprise geographical coordinates, an address, a telephone or fax number, or map coordinates of the location of interest, individually or in combination. Each of these data items specifies a geographical position of a POI with sufficient accuracy. Depending on the navigation device used in the mobile radio terminal, one or more of these data items are required or preferentially used for route guidance. The method according to the invention is thus very universally applicable with a multitude of different navigation devices. The respective navigation device used in the mobile radio terminal can be taken into account by selecting appropriately suitable position data for transmission.

[0035] Furthermore, in an advantageous embodiment of the method according to the invention, additional information about the location of interest is transmitted to the mobile terminal in addition to the position data. Further information includes, for example, a description of the POI, opening hours, prices, parking options, etc. Furthermore, a postal address and a telephone number can also be transmitted as additional information if they are not already included in the position data. This measure provides a user with comprehensive information about a POI in a very user-friendly manner.

[0036] The route guidance device for a user of a mobile radio terminal in a public mobile radio network provides that a) a locating device for locating the mobile radio terminal and forwarding the located position of the mobile radio terminal to the service device and b) a determination unit for the service facility is provided for determining the position data of the location of interest (POl) in a predeterminable geographical environment of the located mobile radio terminal.

[0037] The positioning device is provided, for example, on the mobile terminal or in the mobile network and performs positioning, for example, using satellite-based methods or based on radio cell identities, signal propagation times, or signal strengths. As with the method, this enables route guidance to one or more POIs in the vicinity of the user's current location, without the user having to laboriously determine and enter their exact location, an address, or other positioning data of the location of interest.

[0038] Further embodiments of the destination guidance device according to the invention and the service device according to the invention correspond to the above-described embodiments of the method according to the invention and each have corresponding advantages.

[0039] Furthermore, further embodiments and advantages emerge from the subject matter of the dependent claims, as well as the drawings and the associated description. The subject matter of the invention is characterized by the claims.

[0040] An embodiment of the invention is explained in more detail below with reference to the accompanying drawings. Short description of the drawings Fig. 1 shows a schematic diagram of an embodiment of a route guidance device according to the invention and a corresponding route guidance method. Fig. 2 shows the embodiment of the method for route guidance according to Fig. 1 in a schematic flow diagram. Preferred embodiment

[0041] In Fig. 1, 10 denotes a mobile radio network. The mobile radio network 10 is a public, cellular mobile radio network of the 2nd, 5th, 3rd, or 4th generation and is implemented, for example, according to the GSM, GPRS, EDGE, UMTS, HSDPA, CDMA2000, 20 FOMA, TD-SCDMA, L TE / SEA, or WiMAX standards. Such mobile radio networks and their corresponding components are familiar to those skilled in the art. For the sake of simplicity, the mobile radio network 10 is therefore represented stylized only by a cloud with a radio mast 12 contained within it.

[0042] A mobile radio terminal 14 enables a user 16 to communicate via the mobile radio network 10 or to use mobile services. The mobile radio terminal 14 can be, for example, a mobile phone, cell phone, car phone, smartphone, a stationary computer (e.g., PC) or mobile computer (e.g., notebook, PDA), or another device with a mobile radio interface 18 built into it or connected via an interface (e.g., a PMCCIA card).

[0043] The mobile radio terminal 14 contains, in addition to other devices and functionalities necessary for communication via the mobile radio network 10 and known to a person skilled in the art, in particular an operating unit 20 and a display 22. Furthermore, the mobile radio terminal 14 has a navigation device 24. The navigation device 24 is, for example, a satellite-based navigation system with a GPS module for using the Global Positioning System (GPS) or a route planner usable with the mobile radio terminal 14. Such a route planner is either installed in the mobile radio terminal or is provided by a service in the mobile radio network or an external data network, e.g., "Google Maps" on the Internet.

[0044] Using the display 22, the navigation device 24 displays a calculated route 26 or maps with a calculated route 28 to a destination 30, 32, or POI. For this purpose, the user 16 can enter the position data 34 of a destination 30 using the control unit 20 for the navigation device 24. Position data 34, 36, 38 refers here to all data that describe or specify a precise geographical position of a destination 30, 32, or POI. This includes, for example, an address, geographical coordinates, a telephone or fax number, or map coordinates of the navigation device 24.

[0045] For a very limited number of destinations 32, the position data 36 are already stored in the navigation device 24 or are made available to the navigation device by a central server. Such destinations 32 are typically of interest to a large number of users 16 of the navigation device 24 and serve, for example, to satisfy travel-specific needs or daily necessities, such as hotels, gas stations, ATMs, or parking garages. These stored destinations 32 can also include contact points in urgent situations, e.g., car repair shops, pharmacies, or hospitals, or tourist attractions and leisure activities, such as sports stadiums, museums, swimming pools, and sights.

[0046] Furthermore, a service facility 40 for position data 38 is provided in the mobile radio network 10 or an external data network for highly user-specific points of interest (POI) not stored in the navigation facility 24. Using the mobile radio terminal 14, the user 16 requests position data 38 from the service facility 40 for a point of interest (POI) for route guidance 26 by the navigation facility 24. Depending on the needs and wishes of the user 16, such points of interest (POI) can be, for example, specialty shops, restaurants serving a specific cuisine, companies, public offices, or other locations in the vicinity of their location or a predetermined location. Using the mobile radio terminal 14, a request for position data 38 is possible from any location and at any time.

[0047] In this exemplary embodiment, the service device 40 contains a service server 42. The service server 42 has request means 44 for accepting requests. The request means 44 comprise a short message reception unit 46 for position data 38 in the form of short messages, such as SMS (Short Message Service), MMS (Multimedia Messaging Service), and EMS (Enhanced Messaging Service). Alternatively or additionally, the request means 44 comprise an IVR (Interactive Voice Response) system 48 as an interactive word and key recognition system for accepting a request for position data 38 via a voice connection. Support of the request means 44 by a telephone operator 50 is also possible.

[0048] Using a location device 52, the service server 42 determines the current geographical position of the mobile terminal 14. For this purpose, the location device 52 uses, for example, the identity of a radio cell used by the mobile terminal, the identities of neighboring radio cells, signal propagation times, or signal strengths, and forwards the geographical position to the service server 42. A determination unit 54 determines position data 38 of one or more POIs based on the received request and the current location of the mobile terminal 14. In addition, the current time of day can also be taken into account when determining POIs, e.g., based on opening hours. For this purpose, the determination unit 54 has access to one or more databases 56 in the mobile network 10 or to databases 58 in external data networks and has a timer 60.

[0049] For example, expressions such as "fast food," "bookstore," "tax office," "veterinarian in Hamburg," or "Where can I buy groceries now" are possible as requests. These examples are mentioned here for illustrative purposes only and represent only a very small portion of possible requests. By specifying a predefined area around the current location of the mobile terminal 14, the number of POIs determined can be limited. Alternatively, only the nearest POI can be determined. Furthermore, the user 16 can specify a location in the vicinity of which a POI is to be searched for when making a request.

[0050] Determined position data 38 of one or more POIs are transmitted to the mobile radio terminal 14 using a transmission means 62, preferably as a short message (e.g., SMS, MMS, EMS). Alternatively, transmission as an email or using another data transmission technology is also possible. Prior to this, a conversion unit 64 for position data 38 can convert the position data 38 into a format suitable for the navigation device 24 in the mobile radio terminal 14. In addition to the position data 38, further information, such as a description of the POI, opening hours, prices, parking options, etc., is transmitted. Furthermore, a postal address and a telephone number can also be transmitted as additional information if they are not already contained in the position data 38.

[0051] Transmitted position data 38 are received in the mobile radio terminal 14 by receiving means 66 and forwarded to the navigation device 24 via an interface 68. The navigation device 24 uses the received position data 38 for route guidance 26 to the POI or for displaying the POI on a map using the display 22. Received POIs can be stored in the navigation device 24 or the mobile radio terminal 14 for later use.

[0052] The navigation device 24, the receiving means 66 and the interface 68 in the mobile radio terminal 14 and the service device 40 with the service server 42, the request means 44, the locating device 52, the determination unit 54, the databases 56, 58, the timer 60, the transmission means 62, and the conversion unit 64 together form a route guidance device 70. In alternative embodiments, individual components of the route guidance device 70 can also be arranged in other components of the route guidance device 70, the mobile radio network 10, or the mobile radio terminal 14. In particular, the request means 70, the locating device 52, and the conversion unit 64 can alternatively or additionally also be provided in the mobile radio terminal 14.

[0053] The following describes the functionality of the components of the route guidance device 70 described above, together with a corresponding route guidance method. Fig. 1 as well as on Fig. 2. Identical components are designated by corresponding reference numerals.

[0054] In Fig. Figure 2 shows a schematic flowchart of the exemplary route guidance method. User 16 requires route guidance to a point of interest (POI). The POI is neither stored in the navigation device 24 of the mobile radio terminal 14, nor does user 16 know his or her exact location and the POI's position data 38.

[0055] First, the user 16 requests the position data 38 of the POI from the service device 40, rectangle 100, using the mobile radio terminal 14. The service device 40 receives 102 the request 72 (see Fig. 1) via connection 74 with request means 44. The service device 40 then locates the mobile radio terminal 14 using the locating device 52, rectangle 164. If a locating device 25 is present in the mobile radio terminal 14, for example, as part of the navigation device 24, it is also possible to transmit the location from the mobile radio terminal 14 to the service device 40. Such a transmission is then performed instead of the locating 164.

[0056] Using the located location, a specified environment, and the current time from the timer 60, the service device 40, using the databases 56, 58, and the determination unit 54, determines 106 one or more POIs with corresponding position data 38 in the vicinity of the location. Alternatively, a search in the vicinity of a specified location is also possible. Optionally, the determined position data 38 are converted into position data 38 suitable for the navigation device 24 using the conversion unit 64. For this purpose, required formats or an identity of the navigation device 24 can be transmitted to the service device 40 in an additional previous method step or upon request 100.

[0057] Subsequently, the determined position data 38 of the POI are transmitted by the transmission means 62 from the service device 40 to the mobile radio terminal 14, 110. For this purpose, an SMS short message 76 (see Fig.1) and a data connection 78 are used. Additional information, such as opening hours and prices, is also transmitted. The SMS short message 76 is received by the mobile radio terminal 14, rectangle 112, and recognized by the receiving means 66 as an SMS short message 76 with position data 38. The interface 68 in the mobile radio terminal 14 then transfers the position data 38 to the navigation unit 24, rectangle 114. Finally, the navigation device 24, with the display 22, carries out route guidance 26 to the POI for the user 16 or displays the POI on a map on the display 22, see rectangle 116.

[0058] The route guidance device 70 and the route guidance method described above significantly improve navigation or route guidance by the mobile radio terminal 14 with a navigation device 26. User 16 can now be guided to a POI at any location and at any time, the position data 38 of which are neither stored in the navigation device 24 nor known to the user 16. User 16 is also not required to know their own location. Furthermore, the tedious manual input of position data 38 by the user 16 is avoided.

Claims

[1] Method for route guidance for a user (16) of a mobile radio terminal (14) with a navigation device (24) in a public mobile radio network (10), comprising the following method steps: a) requesting (100) position data (38) of a location of interest to the user (16) with the mobile radio terminal (14) from a service device (40) for position data (38), comprising transmitting formats required for the navigation device (24) of the mobile radio terminal (14) or transmitting an identity of the navigation device (24) of the mobile radio terminal (14) to the service device (40), b) locating (104) the mobile radio terminal (14) by a locating device (52) of the service device (40), which forwards the located position of the mobile radio terminal (14) to the service device (40), c) determining (106) the position data (38) of the place of interest (POI) in a predeterminable geographical environment of the located mobile radio terminal (14) by the service device (40) for position data (38), d) converting the position data (38) into a format suitable for the navigation device (24) of the mobile radio terminal (14), e) transmitting (110) the position data (38) of the location of interest to the user (16) by the position data service device (40) via the mobile radio network (10) to the mobile radio terminal (14), f) transferring (114) the position data (38) of the location of interest to the user (16) received by the receiving means (66) of the mobile radio terminal (14) to the navigation device (24) of the mobile radio terminal (14), and g) Using (116) the transferred position data (38) of the location of interest to the user (16) by the navigation device (24) of the mobile radio terminal (14) to display the location of interest to the user (16) or route guidance (26) to the location of interest to the user (16) by means of a display (22) of the mobile radio terminal (14). [2] Method for route guidance for a user (16) of a mobile radio terminal (14) with a navigation device (24) according to claim 1, characterized by that the request (100) for position data (38) of the place of interest (POI) is made by means of a short message, such as an SMS, MMS or EMS, or an interactive word and key recognition system (48). [3] Method for route guidance for a user (16) of a mobile radio terminal (14) with a navigation device (24) according to one of claims 1 or 2, characterized bythat the location (104) of the mobile radio terminal (14) is carried out by the location device (52) with one or more radio cell identities. [4] Method for route guidance for a user (16) of a mobile radio terminal (14) with a navigation device (24) according to one of claims 1 to 3, characterized by that the transmission (110) of the position data (38) of the place of interest (POI) to the mobile radio terminal (14) is carried out by a short message (76), such as an SMS, MMS or EMS. [5] Method for route guidance for a user (16) of a mobile radio terminal (14) with a navigation device (24) according to one of claims 1 to 4, characterized by that the position data (38) comprise geographical coordinates, an address, a telephone or fax number or map coordinates of the place of interest (POI) individually or in combination. [6] Method for route guidance for a user (16) of a mobile radio terminal (14) with a navigation device (24) according to one of claims 1 to 5, characterized by that in addition to the position data (38) further information on the place of interest (POI) is transmitted to the mobile radio terminal (14). [7] Destination guidance device (70) for a user (16) of a mobile radio terminal (14) in a public mobile radio network (10), comprising a) a navigation device (24) in the mobile radio terminal (14) for displaying a location of interest to the user (16) or route guidance (26) to the location of interest to the user (16) for the user (16) by means of a display (22) of the mobile radio terminal (14), b) a service device (40) for transmitting position data (38) of a location for the navigation device (24) of the mobile radio terminal (14) via the mobile radio network (10) to the mobile radio terminal (14), c) an interface (68) in the mobile radio terminal (14) for transferring received position data (38) of the location of interest to the user (16) to the navigation device (24) of the mobile radio terminal (14), and d) means (44) for requesting the position data (38) of a location (POI) of interest to the user (16) from the service device (40) using the mobile radio terminal (14), characterized by , that e) the service device (40) comprises a locating device (52) for locating the mobile radio terminal (14) and forwarding the located position of the mobile radio terminal (14) to the service device (40) and a determination unit (54) for determining the position data (38) of the place of interest (POI) in a predeterminable geographical environment of the located mobile radio terminal (14), f) the means (44) for requesting the position data (38) of the location of interest to the user (16) are designed to transmit formats required for the navigation device (24) of the mobile radio terminal (14) or an identity of the navigation device (24) of the mobile radio terminal (14) to the service device (40), and g) a conversion unit (64) for position data (38) is designed to convert the position data (38) of the location of interest to the user (16) into a format suitable for the navigation device (24) of the mobile radio terminal (14). [8] Service device (40) for transmitting position data (38) to a mobile radio terminal (14), which contains a navigation device (24) for displaying a location of interest to a user (16) or a route guidance to the location of interest to the user (16) for a user (16) by means of a display (22) of the mobile radio terminal (14) and an interface (68) for transferring received position data (38) of the location of interest to the user (16) to the navigation device (24), comprising a) transmission means (62) for transmitting position data (38) of the location of interest to the user (16) for the navigation device (24) of the mobile radio terminal (14) via the mobile radio network (10) to the mobile radio terminal (14), b) means (44) for accepting requests for position data (38) of the location of interest to the user by the mobile radio terminal (14), characterized by , that c) the means (44) for accepting requests for position data (38) of the location of interest to the user (16) are designed to receive, upon a request (100) to the means (44), required formats or an identity of the navigation device (24) of the mobile radio terminal (14), d) a conversion unit (64) for position data (38) is designed to convert the position data (38) to be transmitted of the location of interest to the user (16) into a format suitable for the navigation device (24) of the mobile radio terminal (14), and e) a locating device (52) for locating the mobile radio terminal (14) and forwarding the located position of the mobile radio terminal (14) to the service device (40) and a determination unit (54) for determining the position data (38) of the location of interest (POI) in a predeterminable geographical environment of the located mobile radio terminal (14) are provided.

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