KR20090044634A - Method of guiding a route using fork information and terminal thereof - Google Patents
Method of guiding a route using fork information and terminal thereof Download PDFInfo
- Publication number
- KR20090044634A KR20090044634A KR1020070110811A KR20070110811A KR20090044634A KR 20090044634 A KR20090044634 A KR 20090044634A KR 1020070110811 A KR1020070110811 A KR 1020070110811A KR 20070110811 A KR20070110811 A KR 20070110811A KR 20090044634 A KR20090044634 A KR 20090044634A
- Authority
- KR
- South Korea
- Prior art keywords
- branch point
- information
- message
- location
- tpeg
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/3407—Route searching; Route guidance specially adapted for specific applications
- G01C21/3415—Dynamic re-routing, e.g. recalculating the route when the user deviates from calculated route or after detecting real-time traffic data or accidents
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3626—Details of the output of route guidance instructions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3664—Details of the user input interface, e.g. buttons, knobs or sliders, including those provided on a touch screen; remote controllers; input using gestures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3667—Display of a road map
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
Abstract
A route guidance method and a terminal using branch point information are disclosed. The route guidance method using the branch point information according to the present embodiment includes the branch point information, receiving a message having a hierarchical structure, obtaining the branch point information by decoding the message, and performing the route guide along the path in which the branch point information is reflected. Including the steps performed.
Junction, TPEG, Road Segment, Delays
Description
The present invention relates to a route guidance method and a terminal using the branch point information.
TPEG (Transport Protocol Expert Group) is a service for transmitting traffic and travel information through digital broadcasting media such as digital multimedia broadcasting (DMB), and includes various standards including data encoding, decoding, and filtering.
In the navigation system using the TPEG, the route guidance was performed without any consideration of the branching point where congestion may occur due to the combined road sections.
The problem to be solved by the present invention is to provide a route guidance method and a terminal using the branch point information to provide the optimal path to the vehicle driver by reflecting the communication state information of the branch point received through the broadcast signal during the route search It is to be.
The problem to be solved by the present invention is not limited to the above-mentioned problem, another task that is not mentioned will be clearly understood by those skilled in the art from the following description. .
The route guidance method using the branch point information according to the present embodiment includes the steps of: receiving a message having a hierarchical structure including branch point information; Decoding the message to obtain branch point information; And performing route guidance along a route in which the branch point information is reflected.
The route guidance method using the branch point information according to the present embodiment includes the steps of: receiving a message having a hierarchical structure including branch point information; Decoding the message to obtain branch point information; Inputting a first position and a second position; If there is a route guidance request from the first location to the second location, searching for routes reachable from the first location to the second location and calculating driving time for each route using the branch point information; And selecting a path having the smallest travel time as an optimal path and performing path guidance.
The terminal according to the present embodiment includes a display unit for displaying a map screen; A broadcast signal receiver including branch point information and receiving a message having a hierarchical structure; A TPEG decoder for decoding the message to obtain branch point information; A processor that searches for a path reachable from the first location to the second location and calculates travel time for each path; And controlling the processor to calculate the travel time by reflecting the branch point information obtained by the TPEG decoder, and controlling the path having the minimum travel time to be displayed on the display unit. It includes a control unit.
According to the present exemplary embodiment, an optimal driving route in which the communication state information of the branch point is reflected is searched, and thus the vehicle driver may be provided with more accurate traffic information.
Hereinafter, this embodiment will be described with reference to the accompanying drawings.
1 is a diagram briefly illustrating a configuration of a traffic information providing system for providing communication state information of a branch point according to the present embodiment.
Referring to FIG. 1, a traffic information providing system includes a
The
In this embodiment, the traffic information includes branch point information defined in the present invention. In the present specification, a branch point is defined as a section in which two or more roads are combined, and is to be applied to both a highway toll gate and a general road.
The
The
More specifically, in the present embodiment, the
The
Traffic information includes bifurcation information and other information on traffic conditions necessary for road, sea and air navigation, such as accidents, road conditions, traffic congestion, road construction, road closures, public network delays and air delays. It may include.
The
In addition, the
The
The
2 is a block diagram showing the configuration of a traffic information receiving terminal according to the present embodiment.
The traffic
The traffic
Referring to FIG. 2, the traffic
The
The
The broadcast signal received by the
The
The
The
The
The
The
3 is a diagram illustrating a format of TPEG information according to the present embodiment.
Referring to FIG. 3, the TPEG information consists of a sequence of message segments (hereinafter, referred to as a 'TPEG message').
Message segments can be applied to different applications, respectively. As an example, each TPEG message may include a TPEG-Congestion and Travel-Time information Application, a TPEG-Road Traffic Message Application, and a TPEG-Public Transport Information Application. ), Multimedia-based traffic and travel information applications (TPEG-Multimedia Based Traffic and Travel Information Application), and other applications.
In the present embodiment, the branch point information may be applied to any of the above-described applications, but for the convenience of description, the branch point information will be described as being transmitted in a TPEG-CTT message.
Each TPEG application is assigned a unique identification number called an Application Identification (AID). The application identifier is used to decode the received TPEG message using the most suitable application decoder.
An identifier 0001 (hex) is assigned to the road traffic message application, an application identifier 0010 (hex) to the TPEG congestion traffic information application (TPEG-CTT), and an application identifier 0008 (hex) to the multimedia-based traffic and travel information application.
The
The
Components included in the
The content of the
The TPEG-
The congestion degree and travel time state information includes information on an average link speed, an interval travel time, an interval delay, and a congestion type.
Table 1 below shows the congestion and travel time information table 03 (CTT 03) defined in TPEG Congestion Traffic Information Application Specification Annex A (normative).
The congestion degree and travel time state prediction information includes information on prediction of average speed, prediction of travel time, and congestion tendency.
Table 2 below shows the congestion and travel time information table 04 (CTT 04) defined in Annex A (normative) of the TPEG Congestion Traffic Information Application Specification.
The additional information describes additional information or supplementary information related to congestion and travel time information in a text format.
The branch point information includes communication state information of each branch point or predicted communication state information of each branch point. The traffic state information at the branch point includes information such as the section average speed of the branch point, the section passing time of the branch point, the delay diagram of the branch point, and the predicted communication state information of the branch point includes the section average speed prediction of the branch point, the section passing time prediction, and the congestion trend. It includes information such as.
In addition, since the bifurcation point is defined as a section in which two or more roads are merged, the number of roads to be merged may also be defined together. For example, when the number of roads to be merged is two, it may be defined as a branch point 2, and when the number of roads to be merged is three, it may be defined as a branch point 3.
The
Branch point information may be defined in TPEG table location reference 42 (LOC 42). Table 3 below shows TPEG Table Location Reference 42 (LOC 42) as defined in Annex A (normative) of the TPEG Congestion Traffic Information Application Specification.
In Table 3, the branch code information may be included in the new code, for example, code 6. In addition, a new code may be assigned to each number depending on the number of branches. For example, a code number 6 may be assigned to a bifurcation point where two road sections merge, and a code number 7 may be assigned to a bifurcation point where three road sections merge.
The TPEG location reference method is defined in TPEG Part 6-Location Referencing for Application, and the location type is defined in TPEG table loc01 to distinguish the location type to transmit.
Table 4 below shows the location reference table 01 (LOC 01) defined in TPEG Congestion Traffic Information Application Specification Annex A (normative).
Since congestion and travel time information includes information on a large number of sections, it is necessary to use the location reference field as flexibly and economically as possible, so add a separate item to the location type table.
The transmission of TPEG congestion and travel time information should be considered as a terminal that does not have a built-in electronic map, and since it must maintain compatibility with existing location reference methods, the TPEG standard adds two location reference methods. One is a location reference method using a coordinate system, and the other is a location reference method using a predefined node link ID.
In the case of using a coordinate system, when transmitting a longitude / latitude, a position reference required in congestion and travel time information indicates a section, and in this case, transmission of coordinates for a start point and an end point is essential. If necessary, the names of the two coordinate sections can be transmitted in text format, and the coordinate system follows the WSG 84 system.
Another method of location reference is to use a predefined link node ID. In this case, an identifier for applying the ID is allocated.
4 is a flowchart illustrating a driving guidance method using the communication state information of the branch point according to the present embodiment.
Referring to FIG. 4, first, the
Meanwhile, when a first position and a second position are input from the user [S415], and if a route guidance request is requested from the first position to the second position [S420], the
The
The branch point information may include information on the average speed of the branch point, branch travel time, branch point delay information, and congestion type. In addition, the branch point information may include the predicted average speed of the branch point, the predicted travel time of the branch point, the congestion trend information of the branch point.
The traffic information of the road section may include congestion degree and travel time state information, that is, section average speed, section travel time, section delay, and congestion type. In addition, the traffic information of the road section may include congestion degree and travel time state prediction information, that is, the predicted section average speed, the predicted section passage time, and the congestion trend information.
On the contrary, when the corresponding route does not include the branch point [S435: N], the
When the steps S430 to S445 are performed for all the paths searched at step S425 [S450: Y], the
FIG. 5 is a diagram illustrating path information in a state where branch point information is not reflected as in the related art.
In the conventional navigation system using the TPEG, using the congestion and travel time information table shown in Table 1, the delay diagram or the traffic diagram of each road section is divided into the congestion, delay, slow motion, smoothness, and the like.
Referring to FIG. 5, two paths are searched from a point A as a current position of the
That is, one path connecting A-> B-> D and the other path connecting A-> C-> D are searched.
First, the estimated time required for the A-> B-> D path is 17 minutes (= 7 minutes + 10 minutes).
In addition, the estimated time required for the A-> C-> D path is 15 minutes (= 5 minutes + 10 minutes).
In this case, the optimum route is selected from A-> C-> D route, and the driving guidance is performed to the selected optimal route.
However, in the conventional method, although the point C is a junction where two or more road sections are merged, no consideration is taken into account, and the estimated time required for each route is calculated using only the communication information of each road section. Therefore, there was a problem of performing the driving guidance.
Therefore, when congestion occurs at a junction where two or more road sections are combined, it may take substantially more driving time when A-> C-> D paths are followed than A-> B-> D paths.
6 is a diagram illustrating path information in a state where branch point information is reflected according to the present embodiment.
Referring to FIG. 6, the estimated time to reach the point D from the current position of the
That is, according to the present embodiment, the estimated time of the A-> B-> D path is calculated for 17 minutes (= 7 minutes + 10 minutes), and the estimated time of the A-> C-> D path is 20 minutes (= 5 minutes + 5 minutes + 10 minutes) is calculated.
That is, according to the present embodiment, in the case of the route including the branch point, the estimated time required to reach the destination of the route is calculated by reflecting the traffic information of the branch point. Thus, more accurate traffic information can be provided to the driver of the
The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.
1 is a view schematically showing the configuration of a traffic information providing system for providing communication status information of a branch point according to the present embodiment;
2 is a block diagram showing the configuration of a traffic information receiving terminal according to the present embodiment;
3 is a diagram showing a format of TPEG information according to the present embodiment;
4 is a flowchart for explaining a route guidance method using branch point information according to the present embodiment;
5 is a view showing path information in a state where branch point information is not reflected as in the prior art; and
6 is a diagram illustrating path information in a state where branch point information is reflected according to the present embodiment.
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070110811A KR20090044634A (en) | 2007-11-01 | 2007-11-01 | Method of guiding a route using fork information and terminal thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070110811A KR20090044634A (en) | 2007-11-01 | 2007-11-01 | Method of guiding a route using fork information and terminal thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20090044634A true KR20090044634A (en) | 2009-05-07 |
Family
ID=40855171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070110811A KR20090044634A (en) | 2007-11-01 | 2007-11-01 | Method of guiding a route using fork information and terminal thereof |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20090044634A (en) |
-
2007
- 2007-11-01 KR KR1020070110811A patent/KR20090044634A/en not_active Application Discontinuation
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8626437B2 (en) | Selecting route according to traffic information | |
US8150609B2 (en) | Method of selecting route and terminal thereof | |
KR101431264B1 (en) | Terminal for receiving traffic information, method of providing singal lamp information, and method of guiding a signal | |
US8392099B2 (en) | Method of providing detail information using multimedia based traffic and travel information message and terminal for executing the same | |
US8150622B2 (en) | Traffic information service based on traffic information transmitted to a navigation system | |
EP1566665A1 (en) | Apparatus and method for providing ambient parameter data and for determining weather information | |
US20070167172A1 (en) | Providing congestion and travel information to users | |
JP2001082967A (en) | Method for requesting and processing traffic information | |
KR20080025496A (en) | Method and apparatus for providng information on availability of public transportation and method and apparatus for using said information | |
US8825349B2 (en) | On-vehicle information terminal and information distribution system | |
JP2011209125A (en) | Car navigation system | |
US8612144B2 (en) | Method for operating a navigation device and a corresponding navigation device | |
JP2009025302A (en) | Method of providing path information and device thereof | |
KR20090044634A (en) | Method of guiding a route using fork information and terminal thereof | |
KR101448895B1 (en) | Traffic light control system based on the TPEG information | |
JP3864733B2 (en) | Navigation system, information center and in-vehicle device | |
KR20090047040A (en) | Method of guiding a route using exclusive lane information and non-exclusive lane information, and terminal thereof | |
KR101370209B1 (en) | A Method For Generating Transport Information and Terminal Thereof | |
KR20090041008A (en) | Providing traffic information using tpeg message | |
JPH10170285A (en) | Regional information display device | |
KR101872807B1 (en) | Electronic Device And Operating Method Thereof | |
KR20100031229A (en) | A method of providing route information and an apparatus therefor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |