KR20150099947A - Method and apparatus for providing information route of object - Google Patents

Abstract

The present invention relates to a method for providing information of a movement route of an object, which is characterized by comprising the following processes: extracting a preset location coordinate data for unit time based on a movement route of an object using location information received from a GPS; and determining data new location data for unit time based on a history of movement pattern of the object, and determining transmission of location information data to a location information data service server performing an object location information service by applying preset movement track algorithm upon the track error calculating result of the object.

Description

[0001] The present invention relates to an object moving route information providing method,

The present invention relates to providing movement route information based on the movement state of an object, and more particularly, to an apparatus and method for preventing movement of unnecessary data to a location service server by using an algorithm technique based on a movement route, And more particularly, to a method and apparatus for providing movement path information of an object that can prevent waste.

The market related to the mobile phone terminal and its application is rapidly changing due to various factors such as the continuous development of the technology related to the mobile phone terminal and the network technology and the increase of various demands of the user. A smart phone with various functions is called a handheld computer and is leading the change of the mobile communication market.

Generally, a smart phone refers to a portable device that combines various applications and Internet functions provided by a PDA (personal digital assistant), a mobile computer, and the unique functions of a mobile phone terminal [1].

(LBS, Location-Based Service) that accurately grasps the location of people or objects using GPS (Global Positioning System) as well as base station-based location tracking used in conventional portable terminals Interest and demand for services are increasing. In the past, various services such as finding friends with similar interests and hobbies using LBS and Social Networking Service (SNS) were provided at the level of providing nearby information such as recommending nearby restaurants based on the user's present location have.

As the number of location-based services increases, problems related to transmission and storage of location and route information are increasing, and an interest in an efficient management system of location information is increasing. Frequent transmission of location data is a factor that increases the overhead of the server of the network and the cost of constructing the system, and in the opposite case, it is difficult to grasp the exact position of the user. Therefore, maintaining accuracy while reducing the number of transmissions of location data is the most important problem in object path data management.

For this, it is necessary to accurately detect the position of the moving object and to maintain the accuracy by detecting the stop of the vehicle through the time or distance based algorithm or the stop detection algorithm and applying the position tracking model that controls the measurement and transmission period according to the state Various methods are being sought.

Accordingly, the present invention provides a technique for providing movement route information based on the movement state of an object for reducing movement route data using an algorithm based on a movement route of a user.

According to one aspect of the present invention, there is provided a method for providing movement path information of an object, the method comprising: extracting position coordinate data for each unit time based on the movement path of the object using position information received from GPS; Determining whether or not new location data is generated for each history-based unit time, and determining whether to transmit location information data to a location information service server performing an object location information service by applying a predetermined locus algorithm according to a result of the trajectory error calculation of the object .

According to another aspect of the present invention, there is provided an apparatus for providing travel route information of an object, the apparatus comprising: a GPS receiver; and a position calculating unit for calculating position calculation for extracting position coordinate data for each unit time based on an object moving path, And a location information service server for performing location information service of the object by determining whether new position data is generated for each unit time based on the movement pattern history of the object and applying a predetermined movement locus algorithm according to a result of the orbit error calculation of the object And determining whether to transmit the position information data and performing the determination.

According to another aspect of the present invention, there is provided a method for providing movement path information of an object, the method comprising: extracting position coordinate data for each unit time based on the movement path of the object using position information received from GPS; Based on the position, speed, and direction conversion calculation result of the object, it is judged whether differential position coordinate data is generated for each unit time based on the pattern history, and the position-based service is selectively applied by the predetermined position- LBS) protocol-based object location information service to the location information service server.

The present invention prevents transmission of unnecessary data to a location service server, thereby preventing network overload and server capacity from being wasted. Also, the present invention can handle a large amount of data transfer for moving objects without using a mass storage device or a high- There is a possible effect.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall flowchart of a method for providing movement path information of an object according to an embodiment of the present invention; Fig.
FIG. 2 is an overall flowchart of a method of providing movement path information of an object according to another embodiment of the present invention. FIG.
FIGS. 3A and 3B are flowcharts of an operation of a motion locus-based algorithm and an operation of a minimum bounding range-based algorithm, according to an embodiment of the present invention.
FIG. 4 is an exemplary view for tracking an object based on a movement path and extracting sample data; FIG.
5 is a diagram illustrating an example of a direction change in a method for providing movement route information of an object according to an embodiment of the present invention.
6 is a security example of a moving trajectory sampling algorithm to which the present invention is applied.
FIG. 7 is a diagram illustrating a path prior to reduction of a trajectory of a moving object having 650 data of Case 2 located at the center row of Table 1 in the object movement path information providing method according to an embodiment of the present invention. FIG.
FIG. 8 is an exemplary view showing an example of a direction change and movement trajectory of an object to which the present invention is applied; FIG.
FIG. 9 is a diagram illustrating an example of a screen showing a trajectory of a moving object switched to each algorithm and a moving trajectory-based algorithm in a method of providing moving path information of an object according to an embodiment of the present invention;
FIG. 10 is a graph showing a data reduction rate of each algorithm in a method of providing movement path information of an object according to an embodiment of the present invention. FIG.
11 is a table showing the data reduction rate of each algorithm to which the present invention is applied.
12 is a graph showing an average error value for each algorithm to which the present invention is applied.
13 is a detailed block diagram of an object movement path information providing apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be appreciated that those skilled in the art will readily observe that certain changes in form and detail may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims. To those of ordinary skill in the art.

The present invention relates to providing movement route information based on the movement state of an object, and more particularly, to a method and apparatus for providing location information based on the movement state of an object, In this paper, we propose a method to calculate the moving path and speed of each algorithm by adaptively using algorithm based on moving path and velocity and algorithm based on moving trajectory. It is possible to prevent unnecessary data transmission to the location service server by preventing the mobile client from estimating the location information update data by predicting the restoration path of the server side by predicting the restoration path of the server side, This, in turn, It is intended to provide a technique capable of handling a large amount of data transfer for moving objects even if a high performance server is not used separately.

In addition, the object movement path information providing apparatus according to the embodiment of the present invention may be applied to a digital broadcasting terminal, a personal digital assistant (PDA), a smart phone, a tablet PC, an iPad, , A 3G terminal such as an International Mobile Telecommunication 2000 (IMT-2000) terminal, a Wideband Code Division Multiple Access (WCDMA) terminal, a Global System for Mobile Communications Packet Radio Service (GSM / GPRS), and a Universal Mobile Telecommunication Service All the same information communication devices and multimedia devices may be included. However, it will be readily apparent to those skilled in the art that the configuration according to the embodiments described herein may be applied to fixed terminals such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a portable terminal.

In describing the present invention, the terms of an object, a moving object, or an object are used in the same meaning in combination according to corresponding examples.

Hereinafter, a method for providing object movement path information according to an embodiment of the present invention will be described in detail with reference to FIG.

First, FIG. 1 is an overall flowchart of a method of providing movement path information of an object according to an embodiment of the present invention.

Referring to FIG. 1, in step 110, a user terminal continuously receives a GPS signal provided by a GPS satellite to acquire position information through a network.

In step 112, position coordinate data for each unit time is extracted based on the movement path (from the origin to the destination) of the object using the position information received from the GPS.

Herein, the unit time refers to a predetermined period of time, which is a reference time for calculating the data extraction amount per hour, which is set in advance according to the movement trajectory of the object and is a reference for extracting data from the source to the destination , Position coordinate data acquisition for each node according to the movement trajectory is performed within the predetermined period.

In step 114, it is determined whether differential position coordinate data is generated for each object based on the movement pattern history of the object.

More particularly, the present invention relates to an apparatus and method for storing movement route data guided by a location service server corresponding to a destination to which the object is intended to move, Whether or not the moving route is moved to the correct route in correspondence with the previously stored moving route, stores the moving route in a predetermined unit time, recognizes the history of the moving pattern from the stored cumulative data, and determines whether new location information data,

As a result of the determination, if differential position coordinate data is generated for each unit time based on the movement pattern history, the process moves to step 116 and the current position coordinate data and the most recently reported position coordinates in the position coordinate data reported according to the object position information acquisition period of the position information service server Collect the data.

In step 118, the path analysis is performed using the collected current position coordinate data and the most recently reported position coordinate data. In step 120, an analyzed path data result-based restoration path error value is calculated. In step 122, Value, and performs data transmission or transmission cancellation in steps 124 and 126 according to the check result, respectively.

Hereinafter, a method of providing movement route information of an object according to another embodiment of the present invention will be described in detail with reference to FIG.

FIG. 2 is a flowchart illustrating an object moving path information providing method according to an exemplary embodiment of the present invention. Referring to FIG.

Referring to FIG. 2, in step 210, the user terminal continuously receives GPS signals provided by GPS satellites and acquires position information through a network.

In step 212, position coordinate data for each unit time is extracted based on the movement path (from the start point to the destination) of the object using the position information received from the GPS.

Herein, the unit time refers to a predetermined period of time, which is a reference time for calculating the data extraction amount per hour, which is set in advance according to the movement trajectory of the object and is a reference for extracting data from the source to the destination , Position coordinate data acquisition for each node according to the movement trajectory is performed within the predetermined period.

In step 214, it is determined whether differential position coordinate data is generated for each object based on the movement pattern history of the object.

More particularly, the present invention relates to an apparatus and method for storing movement route data guided by a location service server corresponding to a destination to which the object is intended to move, Whether or not the moving route is moved to the correct route in correspondence with the previously stored moving route, stores the moving route in a predetermined unit time, recognizes the history of the moving pattern from the stored cumulative data, and determines whether new location information data,

As a result of the determination, when the differential position coordinate data based on the movement pattern history unit time is generated, the process moves to step 116 to change the position, speed, and direction of the corresponding object through a speed calculating unit, a direction conversion calculating unit, And outputs a corresponding calculation result.

Here, it is determined that the direction change of the object occurs when the error value is larger than the initially set threshold value through the movement locus-based algorithm, and the error value is very high at the point where the direction of the object is suddenly changed. Therefore, it is possible to determine the direction change of the object by observing the error value of the locus-based algorithm by setting an appropriate threshold value.

In step 218, the operation of step 216 is performed to determine whether the output value exceeds a threshold value.

As a result of the determination, if the speed of the object is not fast and the number of direction conversions is greater than the speed threshold value, or if the direction switching threshold is greater than or equal to the direction switching threshold, the process moves to step 220 to perform the moving- And performs location tracking through algorithm execution.

FIG. 3 is a flowchart illustrating an operation of a motion locus-based algorithm in an object movement path information providing method according to an exemplary embodiment of the present invention. Referring to FIG. 3, In step 310, if it is determined that new position coordinate data is generated based on the movement pattern within a predetermined unit time, the current position coordinate data and the position coordinate data reported according to the object position information acquisition period of the position information service server And collects the most recently reported position coordinate data.

In step 314, the path analysis is performed using the collected current position coordinate data and the most recently reported position coordinate data. In step 316, the analyzed path data based restoration path error value is calculated. In step 318, Value, and performs data transmission or transmission cancellation in steps 320 and 322 according to the check result, respectively.

More specifically, referring to FIG. 4, the left side of FIG. 4A is an example of an actual moving path of an object, and the center of FIG. 4A is an example of a moving object trajectory through time- It can be seen that thirteen pieces of information have been transmitted during the total moving time of the moving object. 4A shows the case of applying the position acquisition algorithm based on the movement trajectory, so that it is possible to express the entire movement route of the vehicle even if only a total of 9 pieces of data are used.

3A, if the object acquires new position information while moving, the algorithm analyzes the path using the current position and the last transmitted position, Calculates the error value of the path. The error value does not exceed the allowable threshold set by the user (or initially set) and does not transmit the location information to the location information server.

On the other hand, if the comparison value exceeds the error tolerance threshold, the location information immediately before the current location is transmitted to the location information server.

에서

방향으로 움직이는 이동궤적이라 가정할 때,

+1,

+2,

+3의 경우 설정된 임계값을 초과하지 않았고,

+4일 때 경우 임계값을 초과했다고 가정한다. 이때, 차량의 이동 경로는 ,

+1,

+2,

+3에서는 오차가 허용 가능한 범위의 위치 변화이기 때문에

->

로 계산되던 궤적이 임계값을 초과한

+4 이전인

+3에서부터

+3->

+4로 궤적이 변화함을 보여주고 있다[6].4B shows the case of data to be transmitted and an exception. The vehicle

in

Assuming a moving trajectory moving in the direction of the arrow,

+1,

+2,

+3, the set threshold value was not exceeded,

+4, it is assumed that the threshold has been exceeded. At this time,

+1,

+2,

In +3, since the error is a change in position within an allowable range

->

Is greater than the threshold value

Before +4

From +3

+ 3->

And the trajectory changes to +4 [6].

Returning to the description of FIG. 2, if it is determined in step 218 that the speed of the object is fast and the number of direction conversions is less than the speed threshold value and the direction switching threshold value, the process moves to step 224, In step 226, location tracking is performed through the execution of the minimum boundary range based algorithm.

At this time, the minimum bounding range-based algorithm selectively calculates the position information reporting time according to the constant velocity or the equivalent speed motion of the object based on the time difference between the two points of the moving route and the measured distance, The report time is set, and will be described in more detail with reference to FIG. 3B.

FIG. 3B illustrates an operation flow of an algorithm based on a minimum boundary range in an object movement path information providing method according to an exemplary embodiment of the present invention. First, in step 330, a time- .

의 순서를 가진다고 할 경우, 오브젝트의

의 특정 두 지점 사이의 시간에 대한 차이를

로 얻을 수 있다.That is,

Of the object,

The difference between the time between two specific points of

.

를 통해 얻을 수 있다.In step 332, a distance measurement is performed. At this time, the distance is measured by Euclidean distance measurement

.

In step 334, the acceleration is calculated, where the acceleration is referred to as?.

, 현재 속력은

라 하고, 상기 이전 속력과 현재 속력을 비교한다.In 336, the previous speed of the object

, The current speed is

And compares the previous speed with the current speed.

=

)인 지 여부를 판단하고, 동일한 경우 340 과정으로 이동하여 등속 운동을 한다고 판단하여 상기 등속운동 기반 수학식 1을 통해서 위치정보 보고 시간(RT)의 값을 구한다.In step 338, the current speed of the object is compared with the current speed,

=

If it is the same, in step 340, it is determined that the constant velocity motion is performed, and the value of the position information report time (RT) is obtained through Equation 1 based on the constant velocity motion.

If it is not the same, the process proceeds to step 342, and it is determined that equivalent speed motion is determined. In step 344, a position information report time (RT) is obtained through the following Equations 2 and 3 corresponding to the equivalent speed motion.

Thereafter, in step 346, this information is used to set the next location report time (RT), which is reset to a time that can exceed the minimum boundary range (minD) with the current speed.

Can be obtained by the following equations (4) and (5).

As described above, in the method of providing the moving path information of the object to which the present invention is applied, the path data reduction algorithm is selected by grasping the moving pattern of the object through the GPS information collected by the object.

In other words, when the object speed is not fast and the number of direction changes is large, the position is tracked through an algorithm based on a moving trajectory. Also, the RT value of the location acquisition algorithm based on the minimum boundary range is set as the location report time, and the location information is transmitted when the movement trajectory of the object changes and when the location report time comes.

In addition, if the object speed is fast and the number of direction conversions is small, the position is traced through a minimum boundary range based algorithm. To do this, the object computes its own location path and travel speed, reduces the time interval for updating the location information set by the first user, and increases the update time interval when the speed is slower. If this method is used, the update time interval is adjusted in proportion to the moving speed of the object, so that it is possible to efficiently grasp the current position while minimizing redundancy of unnecessary data.

In order to determine whether or not the direction change, which is one of the items for determining the movement pattern in the present invention, is based on the error value of the movement locus-based algorithm, the locus shown in FIG. The error value was obtained through the algorithm.

In other words, the object movement route information providing technology according to an embodiment of the present invention is a technique for providing movement route information of an object according to a position tracking algorithm for each movement pattern type according to the position, speed, To determine whether to transmit location information data to a location information service server that performs location-based service (LBS) protocol-based object location information service.

The direction switching determines that the direction of the moving object has been changed when the error value is larger than the threshold value set initially through the moving locus-based algorithm.

Considering the speed of the moving object and the number of directional conversions, it is possible to grasp the various movement patterns of the object. In the embodiment of the present invention, two representative movement patterns of the motor vehicle traveling in the highway and the running in the city are considered, and the speed of the object is 70 km and the number of turnovers is 3 times. If the vehicle speed is 70 km or more and the position is lastly transmitted and the RT value, which is the position reporting time, passes before the turnover is less than 3 times, it is determined that the vehicle is traveling on the highway and the moving trajectory algorithm is executed. If it is not satisfied, it is determined that the vehicle is traveling in the city, and the position of the moving object is tracked through the minimum boundary range algorithm.

FIG. 6 shows a moving trajectory sampling algorithm in an object moving path information providing method according to an embodiment of the present invention.

)라고 이야기하였으며, 최소 경계 범위 알고리즘도 O(

)의 복잡도를 갖는다. 알고리즘을 선택하기 앞서 계산되는 식은 새 위치 정보를 획득 시 오류값과 최소 이동범위 값을 계산하여 알고리즘 선택을 하는 계산으로 위치정보 획득 시 수행된다. 이 계산식의 복잡도는 O(n)이며 따라서 총 복잡도는 O(

)이 된다.In Ref. [5], the complexity of the motion trajectory algorithm is O (

), And the minimum bounding range algorithm is O (

). The equation that is calculated before selecting the algorithm is performed when the position information is obtained by calculating the algorithm by calculating the error value and the minimum movement range value when acquiring the new position information. The complexity of this equation is O (n), so the total complexity is O (

).

In a situation where the location information is concentrated in a narrow area in the movement of the moving object or the congested traffic situation, the waiting at the current position causes a linear increase in the processing and storage cost of the location information of the moving object. In order to solve this problem, it is possible to solve this problem by applying the distance-based collection condition to the moving object together with the speed-based collection mentioned above, and adjusting the location information collecting and reporting environment by itself.

Table 1 shows the reduction rate of the existing data through the method of providing the moving path information of the object proposed in the present invention.

[Table 1]

According to each threshold value, 1382 position data is reduced to 275 at least, and data reduction effect is shown by up to 80%.

FIG. 7 is a diagram illustrating a path prior to reduction of a trajectory of a moving object having 650 data of Case 2 located at the center row of Table 1 in the object movement path information providing method according to an embodiment of the present invention.

The left side of FIG. 8 is a visualization of position data obtained by performance evaluation through the method proposed in the present invention with the position data of Case 2. 7, the number of position data is reduced, but it can be seen that the two pictures on the map show almost the same shape of the trajectory.

That is, since the position and the trajectory of the moving object can be checked even with a small amount of data, there is no difference from the existing system, so that the data communication amount and storage capacity of the server and the client can be reduced.

The right side of FIG. 8 shows a trajectory in which the moving object is moving at a high speed while reducing the speed and increasing the directional change. FIG. 9 shows the existing trajectory data shown in the right side of FIG. 8, the trajectory using the minimum boundary range algorithm in the left drawing, the trajectory based on the moving trajectory in the center and the right tracing in the first highway using the minimum boundary range algorithm, The speed of the moving object is reduced and the number of directional changes increases, thereby indicating the trajectory of the moving object that has been switched to the moving trajectory based algorithm. And shows the trajectory of the moving object using the adaptive technique through the speed and direction switching of the moving object.

The table shown in FIG. 11 and FIG. 10 show data reduction rates through respective algorithm techniques. 11 shows two data reduction rates along with the number of reduced data / number of existing data. The data reduction rate is the highest at 57% in the algorithm based on the moving trajectory, 49% in the minimum boundary range algorithm and the lowest in the adaptive type Technique showed moderate data reduction rate of 52%.

FIG. 12 shows an average error value for each algorithm in the method for providing object movement path information according to an exemplary embodiment of the present invention. The adaptive algorithm has the lowest error value, It can be seen that it is close.

The present invention has been described above with respect to a method for providing moving path information of an object according to an embodiment of the present invention.

Hereinafter, an object moving path information providing apparatus according to an embodiment of the present invention will be described in detail with reference to FIG.

13 is a detailed block diagram of an object movement path information providing apparatus according to an embodiment of the present invention.

13, the apparatus 130 to which the present invention is applied includes a GPS receiving unit 132, a position service communication unit 134, a trajectory error calculation unit 136, a control unit 140, a position calculation unit 146, A history storing unit 150, a moving locus based position obtaining unit, and a path measuring unit 152.

The position calculating unit 146 extracts position coordinate data for each unit time based on the moving path of the object by using the position information outputted from the GPS receiving unit 132 under the control of the controller 140. [

The control unit 140 determines whether differential position coordinate data is generated for each object based on the movement pattern history data of the object through the movement pattern history storage unit 150 and outputs a predetermined movement locus algorithm according to the output result of the orbital error calculation unit 136. [ (LBS) protocol-based object location information service through the location service communication unit 134. The location information service server 132 determines whether to transmit the location information data to the location information service server 132. [

When new position coordinate data based on the movement pattern is generated within a predetermined unit time under the control of the control unit 140, the movement locus based position acquiring unit 142 acquires the current position coordinate data and the object position of the position information service server 132 The path analysis unit 152 performs path analysis using the position coordinate data most recently reported in the position coordinate data reported according to the information acquisition period and calculates a restoration path error value from the path analysis result using the path estimation unit 152, 136, and as a result of the calculation, transmits the location information data to the location information service server 132 when the predetermined threshold value is exceeded, and transmits location information data to the location information service server when the threshold value is less than Cancel.

In addition, the movement locus-based position acquiring unit 142 acquires the position of the object based on the time difference between the two points on the movement path and the measured distance according to the time series of the locus-based nodes when transmitting the position information data to the position information service server 134 The location information reporting time is selectively calculated according to the constant speed or the equivalent speed exercise, and the location information reporting time to the location information service server is set and the transmission is performed based on the time information reporting time.

Although the exemplary embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions, and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. . Accordingly, the scope of the present invention should not be limited by the illustrated embodiments, but should be determined by equivalents of the claims and the claims.

132: GPS reception unit 134: Position service communication unit
136: Speed calculation unit 138: Direction conversion calculation unit
140: Control unit 146: Position calculation unit
148: Gyro sensor unit 150: Movement pattern history storage unit
152: path estimation unit

Claims (6)

A method for providing movement path information of an object,
Extracting position coordinate data for each unit time based on the movement path of the object using the position information received from the GPS;
Determining whether or not new position data is generated for each movement pattern history unit time of the object, and transmitting the position information data to the position information service server for performing the object position information service by applying a predefined movement trajectory algorithm according to a result of the trajectory error calculation of the object And determining whether or not the object is moving. 2. The method of claim 1,
When the new position coordinate data based on the movement pattern within a predetermined unit time is generated, the current position coordinate data and the latest position coordinate data reported from the position coordinate data reported according to the object position information acquisition period of the position information service server, Performing an analysis,
Calculating a restoration path error value from the path analysis result;
And transmitting location information data to the location information service server when the calculated threshold value is exceeded and canceling the location information data transmission to the location information service server when the threshold value is less than the threshold value. To provide movement path information of the object. 3. The method according to claim 2,
The position information reporting time is selected according to whether the object is constant velocity or equivalent acceleration or not based on the time difference between the two points on the movement path and the measured distance according to the time series of the movement locus based on the locus information transmitted to the position information service server And setting a location information reporting time to the location information service server and performing transmission based on the location information reporting time. A moving route information providing apparatus for an object,
A GPS receiver,
A position calculation unit for extracting position coordinate data for each unit time based on the movement path of the object using the position information outputted from the GPS receiver;
A location information service server for performing location information service of the object by determining whether new position data is generated for each movement pattern history unit time of the object and applying a predetermined movement locus algorithm according to a result of the orbit error calculation of the object, And determining whether the object is to be transmitted or not. 5. The method of claim 4,
When the new position coordinate data based on the movement pattern within a predetermined unit time is generated under the control of the control unit, the current position coordinate data and the most recently reported position coordinate of the position coordinate data reported according to the object position information acquisition period of the position information service server And transmits the location information data to the location information service server when the threshold value is exceeded as a result of the calculation, and when the threshold value is less than the threshold value, Further comprising a movement trajectory-based position obtaining unit for canceling the transmission of the positional information data to the position information service server. 6. The apparatus according to claim 5, wherein the movement locus-
The position information reporting time is selected according to whether the object is constant velocity or equivalent acceleration or not based on the time difference between the two points on the movement path and the measured distance according to the time series of the movement locus based on the locus information transmitted to the position information service server And sets the location information reporting time to the location information service server and performs transmission based on the location information reporting time.

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