WO1998003951A1 - Traffic data selection and filtering method - Google Patents

Traffic data selection and filtering method

Info

Publication number
WO1998003951A1
WO1998003951A1 PCT/DE1997/001531 DE9701531W WO9803951A1 WO 1998003951 A1 WO1998003951 A1 WO 1998003951A1 DE 9701531 W DE9701531 W DE 9701531W WO 9803951 A1 WO9803951 A1 WO 9803951A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
traffic information
user
characterized
method according
traffic
Prior art date
Application number
PCT/DE1997/001531
Other languages
German (de)
French (fr)
Inventor
Rolf Beyer
Original Assignee
Detemobil Deutsche Telekom Mobilnet Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/0962Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096708Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
    • G08G1/096716Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/091Traffic information broadcasting
    • G08G1/093Data selection, e.g. prioritizing information, managing message queues, selecting the information to be output
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/0962Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096775Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a central station

Abstract

The invention concerns a method of selecting and filtering traffic data in a mobile radiotelephone-assisted traffic data service. According to the invention, the traffic data are collected and prepared in a traffic-editing section of a central office and, depending on the extent of information desired, the user can select different retrieval modes as desired via a suitable mobile radiotelephone terminal and thus retrieve different traffic data from the central office. The information content of the traffic data retrieved is prepared by the central office specifically for the particular user, taking account of the location of the user at any given moment and/or the indication of a destination, and by specific filtering.

Description

A process for the selection and filtering of traffic information

The invention relates to a method for the selection and filtering of traffic information, preferably for use in a mobile radio supported traffic information service.

The basis is a mobile-assisted

Traffic information service such as that described in the GSM mobile radio network Dl is to be realized within the scope of computer-based traffic telematics services and is. In addition to the known mobile communication services such as voice and data are to be available over the wireless network and traffic information that can be received by a corresponding terminal that is equipped, for example, according to the industry standard "IntraGSM" and displayed.

The object of the invention is to propose a method for the selection and filtering of traffic information, through which aufbereite and the Used individually be transmitted only for him relevant information.

This object is achieved by the technical teaching of claim 1.

An essential feature of the invention that the user is given a choice between several Verkehrsinformationsmodi so that it can retrieve the most interesting for him or directly relating to him traffic information. In addition, depending on the selected mode information, the traffic data is filtered so that only reach the user from a plurality of traffic information that is important to him.

The traffic information service provides the user with three modes, which he can select as required yourself: 1. local traffic information (lok)

2. regional traffic information (reg)

3. targeted traffic information (vek)

With selection of the modes 1 and 2 information is requested from the vicinity of the user's location. By selecting "local" or "regional", the user defines the relative size of the area over which they wish to receive traffic information, as well as priorities / emphasis in information selection. The third mode allows the user to query targeted traffic information that is tailored to its direction or its destination. For this purpose, the user selects by an input to its terminal a destination with the aid of a module "DESTINATION REQUEST" in communication with the service control center. In the context of the target request, the coordinates of the destination are to be transmitted to the terminal. The user can use the selected destination in its digital " store Address Book "in the terminal. As a destination but (paragraph 1 + 2 Postcode) can also be entered area code or zip code regions. Based on the current location and your destination, an individual reference range for the traffic information in the control center is determined. The relevant traffic information is transmitted from the control center via a GSM mobile network to the vehicle.

The display of the information as text on the display of the specially prepared terminal. With a scroll function allows the user to the individual

Select traffic information (records). Furthermore, the user has an "automatic mode" is available, in which the message respectively over the direction of travel (coarse) closest disorder (s) will be displayed.

Query menu for traffic information or in the basic configuration menu a voice output can be activated by the user. If this function is active, the relevant traffic information is also-spoken language in the form of a voice mailbox and are thus accessible by the user. The voice mailbox automatically informs the user about the presence of new messages. The user then initiates the query the mailbox.

In the traffic editors of the service center, the traffic information is collected and processed. This information (records) are sorted according to a geographic grid (patches) and provided to allow for quick and easy retrieval.

The records obtained information on the type, priority and direction vector of the disorder, as well as geographic information disorder.

The reference range of the traffic information is the current position (coordinates) start position and the user-selected mode, - (lok VImod =), regional information (VImod = reg) or targeted Info (Vlmod = VEK) local information - defined. For the mode "Zielgerichete Info" a destination target position by determining is also required, which is determined either by the service center in which radio cell the mobile radio system, the user resides or is determined by a GPS location system that integrated in the terminal or vehicle and transmits the exact position data to the service center.

The size of the allocated reference range, ie the number of the partial areas (grid squares) should be over which traffic information is provided depends on the density of the (remote) road segments that are present in the starting position.

The selected information is transmitted in data form for vehicle-mounted terminal.

Option: If the speech output is enabled, the traffic information is implemented in voice form and transferred to a voice mailbox. Here is an example of an implementation.

a grid (eg 10 km x 10 km) is displayed on the digital map. Each grid square is a

Traffic density parameter (PVD = 0-4) are assigned. PVD = 0 means the highest traffic density, PVD = 4 niedigste

Traffic density. PVD with the size of the reference region is calculated, where the reference areas in the rural area are greater than in urban areas.

The traffic density parameter PVD can be allocated as follows:

PVD application

0 (reserve)

1 conurbations

2 cities and peripheral areas of metropolitan areas

3 Other Regions

4 (reserve)

In addition, the grid squares transformation parameters are specified for direction vectors in order to take into account geographical features in the later filtering of information (see below).

The traffic information is stored as records in the database of the traffic newsroom. This record includes:

• reference

• Message content (code or text)

• position of the message, as a point or as a geometric figure

• If necessary, the direction vector of the message

• Priority of the message

- warning messages (accident, wrong driver warning etc.)

- Entwarnmeldung

- reports of traffic incidents (actual)

- reports of predictions the next hours

• Relevance of Transport

- local significance (eg side street) - regional significance (eg arterial road)

- national significance (eg motorway) as a parameter for filtering the information of a reference range. • Type of source

- official (state reporting center, etc.)

- own survey

- forecast

The data sets are each associated with one or optionally a plurality of grid squares (for large-scale disturbances).

The basis for the information selection consists of all available information actual and forecast data for the period of the next few hours. This information is associated with the grid squares affected in a database. Basically all information Detaillierungszonen (motorways to urban) can be processed because filtering functions are defined and thus the risk of a "showering with information" is not given.

In the following the invention is explained in detail with reference to only one embodiment illustrative drawings. In this connection further inventive features and advantages will be apparent from the drawings and their description.

Show it:

1 shows an example of the menu structure of the terminal-side application of the service;

Figure 2: Example of a possible hardware implementation of the method;

Figure 3A

Figure 3B: Sequence diagram of a vehicle-side traffic service query; Figure 4: Example of the determination of the reference range of the information in the mode "local" and "regional";

Figure 5: Example of a filtering of the information in the mode "local" and "regional"

Figure 6: Example of the determination of the reference range of the information in the mode "VEC";

Figure 7: Example of a filtering of the information in the mode "VEC".

Figure 1 shows an example of the menu structure of the terminal-side application u. A. to query the traffic information service. The main menu offers the option "V-Info" the selection of the service. It leads to the submenu "V-Info" and can range from three area modes, selected in accordance with local, regional or targeted traffic information. If the targeted information is selected, the selection menu "Destination" the desired destination must be entered. This can be done by specifying the target coordinates, a corresponding telephone number or the zip code of the destination. The traffic information is displayed as text or on request as voice information.

Figure 2 shows the application environment of the

Traffic information service. In a service center in which the user database is located and what for billing the services used (billing) is responsible, a traffic editorial is provided according to the invention, in which the traffic information accrues from different sources are processed and prepared. The traffic data with a digital map to be linked and each geographical "grid squares" this card assigned. The processed traffic data can be queried by traffic participants, GS -Mobilfunknetz About a user module "V-Info". The query and the exchange of information is controlled by a communication server, which establishes the connection between the telecommunication system of the headquarters and the GSM system or the vehicle. the user wants a voice output, so the traffic information by means of a voice generator to the voice mailbox if present speaking), and may be accessed on it by the user via his terminal / tapped.

Figures 3A and 3B show a flowchart of a vehicle-side traffic service query. The user is guided via his terminal by means of a menu by the traffic information query. The flow chart is self-explanatory and gives detailed insights into the menu structure and their links to supplement the rough overview in FIG. 1

the user has as already stated by calling the

Traffic menu choice of three modes (see FIGS.

1, 3A and 3B). He can information from the circle of his

retrieve residence: with a "local" (LOC) it receives information from the immediate environment (small radius) and "regional" (reg) it receives information from the further

Environment (large radius) to "targeted" (VEK) he has the possibility to specify a target. The target location is selected with the module "DESTINATION REQUEST" and the coordinates of the destination are available in the terminal.

He now receives information from a "further environment," with a shifted into target towards the center.

The exact size of the environment or reference area should not be pre-determined. Instead, the relative terms "local" and used "regional". At headquarters, the exact size of the queried reference range is calculated. With this method, the determination of the reference range is made more convenient and more effective than a fixed-specification Km. So it is possible to adjust the size of the reference area of ​​the traffic density of the location area: is in the rural area of, for example, with "local" queried range greater than in urban areas.

The depth in the central traffic information request includes:

START POSITION (coordinates of the user's present location)

Target position = only for VImod VEK (coordinates were MODULE

determined "TARGET REQUEST"

VI selected mode (VImod = ?; lok, gov, VEK)

Selected audio mode (info_audio =;? On, off)

The determination of the reference range for the Interrogation Mode "local" and "regional" will be explained with reference to FIG. 4

From the start position, the start square (grid map) and the associated traffic density parameter PVD is determined. With the interrogation mode (Vlmod) is determined (by the user) on the vehicle side, whether or not information from the immediate environment (= local) should be queried (regional =) or from the further surroundings. the parameter Vl is od for calculating the reference range converted into numbers: lok = 1 and reg = 2. The parameter PVD of the grid square is taken in addition to the size of the reference range influence to take into account the traffic density in determining the size of the reference range.

The size of the reference range is calculated as follows: Vol_VIBezug = PVD + Vlmod

example:

It is regionally requested (VImod = reg = 2) traffic information with the selection. The START POSITION located in a

Metropolitan area (PVD = 1).

The size of the reference range is therefore Vol_VIBezug = PVD + Vlmod = 3. From figure 4 it can be seen that the reference area is 5 x 5 grid squares. With a pitch of eg 10 km this would mean a radius of about 25 km around the starting point (the user's location).

There is a traffic information with the selection request locally (VIτnod = lok = l). The starting position is in a rural area (PVD = 3).

The size of the reference range is therefore Vol_VlBezug = PVD + Vlmod = 4. From Figure 4 it can be seen that the reference range is 7 x 7 grid squares. With a pitch of eg 10 km this would mean a radius of 35 km around the starting point (the user's location). It can be seen that the reference areas locally and regionally, not only merge into one another, but could also overlap.

The determination of the reference range for the Interrogation Mode "VEC" will be explained with reference to FIG. 6

From the start position, the start square (grid map) and the associated PVD is determined. With the additional transmitting target position, a direction vector is generated. the parameter Vlmod is converted to a number for the calculation of the reference range: VEK = 2. The parameter PVD of the raster uadrats Referring additionally to the size of the reference range influence to take into account the traffic density in determining the size of the reference range.

The size of the reference range is calculated as follows: Vol_VIBezug = PVD + Vlmod

The reference area is not placed symmetrically about the starting grid square, but offset toward the target position.

Example: There is a traffic information with the selection of requested "targeted" (VImod = VEC = 2), the start position is in an urban area (PVD = 2), the target position is southeast of the start position...

The size of the reference range is therefore Vol_VIBezug = PVD + Vlmod = 4. From Figure 6 it can be seen that the reference range is 7 x 7 grid squares. With a pitch of eg 10 km this would mean an area with a radius of about 35 km. The center of the reference area is offset from the start -Rasterquadrat two grid units in the south-east.

The information of the reference area are checked for redundancy. Based on the reference numbers that have been assigned to each single Traffic record, the system can exclude multiple answers.

Above it was shown how the relevant reference areas to be determined. The reference areas identified consist of individual grid squares. These grid squares will assigned current traffic information from the traffic newsroom.

Will be described below with reference to FIGS 5 and 7, as the traffic information are further filtered, taking account of the direction vectors. This is to ensure that the user is possible only receives the information that is relevant for him and for example, any information destined for the opposite direction. Also in the filtering data is discriminated VEK locally / regionally and the targeted mode between the modes.

In the modes "local" and "regional" no fundamental direction vector is specified and therefore can be filtered only after the "centrifugal", ie are primarily taken into account traffic information, the direction vector viewed from the position of the vehicle outwards. In the start This filtering grid square, are used for filtering the information is limited to a range of approximately - grid square information is therefore to be considered with all the direction vectors in the surrounding grid squares of the reference range, the centrifugal directions can, based on the start. (see fig. 5.). . 90 ° left and right of the centrifugal direction vectors, ie, so that tolerances can be included in total to 180 ° by geographically related road courses.

In addition, it should be possible to filter information about the relevance for the local / regional transport. This filter function is only relevant if by a high penetration of mobile traffic data acquisition a lot of information about branch lines available (option for a subsequent implementation stage).

When targeted mode "vek" is by the well-known destination, which corresponds to a specific target grid square, given a basic direction vector can be filtered by. In the start grid square information should be considered with all the direction vectors. In the surrounding grid squares of the reference range . used the parent direction vector based on the target grid square, filtering information (see figure.. 7) This filtering is limited to a range of approximately 90 ° left and right of the direction vector, ie, a total of approximately 180 ° so that tolerances can be incorporated by geographically based, grossly deviating from the theoretical direction of travel after roads with.

Due to geographical features, such as bridges or central feeder roads, it can happen that individual road courses may be relevant against the parent Direction for information selection. If these geographical characteristics known, appropriate conversion parameters can be assigned to the grid squares affected. This transformation parameters can for example cause information with the direction vector "North" for the grid square xy always output and therefore can not be filtered out.

The filtered information of the reference range are output as records. Each record contains the contents of the message (Type of material: text or code) and the position of the disorder to allow in-vehicle terminal has a positional and directional display of information (automatic mode). The position may be a point or a geometric figure. the output signal (TINFO_response) is generated from the data sets together with the subscriber identity (T-ID) given to the communication server.

If after generation of declaration (TINFO_response) arrive new important messages for the reference area within a definable period of time, they should be passed on to the user.

If set in the received traffic information request parameter info_audio = on and messages (after filtering) present for the reference range, they are converted to a voice message. For this purpose, typically uses a speech synthesizer using a standard vocabulary. In special cases, the text can also be recorded by an operator of information.

Claims

claims
1. A method for the selection and filtering of traffic information in a mobile radio supported traffic information service, characterized in that the traffic information is collected in a traffic offices of a service center and processed that the user, depending on the desired information he periphery, via a suitable mobile radio terminal optionally different query modes select and thus can retrieve various traffic information from the service center that the information content of the acquired traffic information is processed user-specifically from the service center taking into account the instantaneous location of the user and / or specification of a journey destination and by selective filtering.
2. The method according to claim 1, characterized in that the service center has a digital road map, which is divided into geographical sub-areas, including screened areas, wherein the data processed by the traffic editorial traffic information is allocated to the corresponding partial surfaces.
3. A method according to any one of claims 1 or 2, characterized in that the service center takes place by a rough positioning of the user by determining the radio cell in which the user resides immediately.
4. The method according to any one of claims 1 to 3, characterized in that a positioning of the user by means of a GPS positioning system is carried out, which is integrated in the terminal or a vehicle, and its data are transmitted to the service center.
5. The method according to any one of claims 1 to 4, characterized in that the user of a corresponding partial area of ​​the digital map determined location is associated.
6. A method according to any one of claims 1 to 5, characterized in that a local inquiry mode is provided, in which the user based local traffic information obtained on its location.
7. A method according to any one of claims 1 to 6, characterized in that a regional inquiry mode is provided, in which the user based regional traffic information obtained on its location.
8. A method according to any one of claims 1 to 7, characterized in that the input of the travel destination by the user through coordinates specifying a telephone number or specification is the code of the destination, then transfer this data to the service center and a corresponding partial area of ​​the digital map be assigned.
9. The method according to any one of claims 1 to 8, characterized in that a targeted inquiry mode is provided, in which the user, including its location, and its destination drive relevant to the expected route traffic information is obtained.
10. A method according to any one of claims 1 to 9, characterized in that the filtering of the traffic information is based on the determined from the estimated or known direction of travel direction vectors.
11. The method according to any one of claims 1 to 10, characterized in that all radially extending from the vehicle location in the local direction vectors are taken into account and regional inquiry mode for filtering the traffic information.
12. The method according to any one of claims 1 to 11, characterized in that in the targeted inquiry mode for filtering primarily of looking from the instantaneous location to the destination direction vector is taken into account.
13. The method according to any one of claims 1 to 12, characterized in that the filtering of the traffic information takes place in that only traffic information about single or multiple type of road (for example, roads, Bunde roads, highways ..) are taken into account depending on the selected query mode
14. A method according to any one of claims 1 to 13, characterized in that each surface portion of the digital map, a traffic density parameter (PVD) is assigned.
15. The method according to any one of claims 1 to 14, characterized in that a traffic information reference range
(Vol_VIBezug) is defined which of the selected inquiry mode (Vlmod) and one of the respective sub-area of ​​the vehicle location associated traffic density parameter (PVD) is determined as follows: Vol_VIBezug = PVD + Vlmod.
16. The method according to any one of claims 1 to 15, characterized in that the traffic information reference range of the radius around the user defined location over which the traffic information is to take place.
17. The method according to any one of claims 1 to 16, characterized in that in the user-side terminal device is a text output the traffic information.
18. The method according to any one of claims 1 to 17, characterized in that in the user-side terminal device is a voice output of the traffic information.
PCT/DE1997/001531 1996-07-22 1997-07-21 Traffic data selection and filtering method WO1998003951A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1996129233 DE19629233C2 (en) 1996-07-22 1996-07-22 A process for the selection and filtering of traffic information
DE19629233.6 1996-07-22

Applications Claiming Priority (3)

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EP19970935443 EP0939945B1 (en) 1996-07-22 1997-07-21 Traffic data selection and filtering method
DE1997504555 DE59704555D1 (en) 1996-07-22 1997-07-21 A process for the selection and filtering of traffic information
DK97935443T DK0939945T3 (en) 1996-07-22 1997-07-21 A method for the selection and filtering of traffic information

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DE (1) DE19629233C2 (en)
DK (1) DK0939945T3 (en)
ES (1) ES2163794T3 (en)
WO (1) WO1998003951A1 (en)

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DK0939945T3 (en) 2001-12-17 grant
DE19629233A1 (en) 1998-01-29 application
ES2163794T3 (en) 2002-02-01 grant
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DE19629233C2 (en) 2003-08-07 grant
EP0939945B1 (en) 2001-09-05 grant
EP0939945A1 (en) 1999-09-08 application

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