WO2011040757A2

WO2011040757A2 - Method for measuring location

Info

Publication number: WO2011040757A2
Application number: PCT/KR2010/006637
Authority: WO
Inventors: 김강희; 여건민
Original assignee: 한국전자통신연구원
Priority date: 2009-09-30
Filing date: 2010-09-29
Publication date: 2011-04-07
Also published as: WO2011040757A3

Abstract

The present invention relates to a method for measuring a location using a public safety management system. A terminal obtains positioning information and transmits the positioning information to the public safety management system when a public safety mode for tracing the location is set in a power-off state thereof. In the method for measuring the location of the terminal in which the public safety mode including a plurality of steps is set, when the positioning step of the steps of the public safety mode is set in the terminal, the terminal obtains the positioning information, transmits the positioning information to the public safety management system, and executes the next step when the public safety mode is not released after the constant duration. In the method for measuring the location of the terminal in the public safety management system, a public safety mode setting request message including control information is transmitted to the terminal for which the setting of the public safety mode is required, and the location of the terminal is traced by receiving the positioning information from the terminal.

Description

How to measure position

The present invention relates to a location measuring method, and more particularly, to a method for measuring the location of a terminal in which the public safety mode is set.

Location Based Service (LBS) includes services that provide various information related to location, such as location tracking service and public safety service. Position measurement may be performed using a mobile communication base station or a GPS method. Although the method using the base station may have a large error, the indoor location may be measured using a repeater or the like, and the GPS method may have high accuracy but difficult to measure the indoor location.

The location tracking service is a service for identifying or tracking a location of a person or a thing, and in particular, a location tracking service may be provided for the safety of a terminal owner. However, even if the location tracking for safety purposes, if the power of the terminal is cut off, there is a limit that can not obtain the location information and control the terminal.

The problem to be solved by the present invention is to provide a method for measuring the position of the terminal is set to the public safety mode.

A method of measuring a location of a terminal using a public safety management system according to an embodiment of the present invention, the method comprising: obtaining positioning information of the terminal when a public safety mode capable of tracking a location is set even when the power is turned off; and Transmitting location information to the public safety management system.

The method further comprises receiving a public safety mode setting request message including information for controlling the terminal from the public safety management system, wherein the terminal responds to the public safety setting request message. It can be set to.

The method may further include transmitting a setting completion message of the public safety mode to the public safety management system when the public safety mode is set.

The acquiring of the location information includes obtaining information for location measurement in cooperation with at least one reference node, and calculating a location of the terminal using the information for location measurement. Positioning information may include information about the calculated position.

The acquiring of the location information may include acquiring information for location measurement in cooperation with at least one reference node, and the location information may include information for the location measurement.

The transmitting may include transmitting the positioning information according to a transmission period set in the public safety mode.

The method may further include changing the transmission period according to the remaining battery information of the terminal.

The method may further include increasing a sleep cycle of the terminal when the public safety mode is set.

The method may further include switching to an internal power supply of the terminal when the battery of the terminal is removed or there is no remaining battery power in the public safety mode.

According to another embodiment of the present invention, a method for measuring a location of a terminal in which a multi-stage public safety mode is set, and when a first stage for performing a positioning procedure is set among the multi-stage public safety mode, positioning information of the terminal is determined. Acquiring, transmitting the location information to a public safety management system, and if the public safety mode is not released after a predetermined time, entering a second step that is the next step of the first step.

The method may further include entering the highest risk level among the plurality of steps when the terminal is powered off in the public safety mode.

A method for measuring the position of a terminal in a public safety management system according to another embodiment of the present invention, transmitting a public safety mode setting request message including information for controlling the terminal to a terminal for which the public safety mode setting is requested And receiving the location information of the terminal from the terminal, and tracking the location of the terminal by using the received location information.

The tracking may include calculating a location of the terminal using the location information.

The method may further include retransmitting the public safety mode setting request message when the location information is not received from the terminal.

The method may further include informing a communication system that the terminal is a terminal for which a public safety mode setting is requested, and receiving a registration status of the terminal from the communication system.

According to an embodiment of the present invention, even if the power of the terminal is turned off, the position of the terminal can be tracked.

1 is a view showing a positioning method according to an embodiment of the present invention.

2 is a flowchart illustrating a method for measuring a location of a terminal according to an embodiment of the present invention.

3 is a flowchart illustrating a method of measuring a location of a terminal according to another embodiment of the present invention.

4 is a flowchart illustrating a method for measuring a location of a terminal in which a multi-stage public safety mode is set according to an embodiment of the present invention.

5 is a flowchart illustrating a method of operating a public safety management system according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

In the present specification, a terminal is a mobile station (MS), a mobile terminal (MT), a subscriber station (SS), a portable subscriber station (PSS), a user equipment (User Equipment). It may also refer to a user equipment (UE), an access terminal (AT), and the like, and may include all or some functions of a terminal, a mobile terminal, a subscriber station, a portable subscriber station, a user device, an access terminal, and the like.

In the present specification, a base station (BS) is an access point (AP), a radio access station (Radio Access Station, RAS), a Node B (Node-B), an eNB (Evolved Node-B), a base station (Base transceiver station) It may refer to a Transceiver Station (BTS), a Mobile Multihop Relay (MMR) -BS, or the like, and may include all or a part of functions of an access point, a wireless access station, a Node B, an eNB, a base transceiver station, and an MMR-BS. .

Now, with reference to the drawings will be described in detail a method for measuring the position of the terminal is set in the public safety mode according to an embodiment of the present invention.

Referring to FIG. 1, the location of the terminal 100 in which a public safety mode is set is measured through a public safety monitoring system 200 and a plurality of reference nodes 300-500. Reference nodes 300-500 include network devices that transmit location signals, such as base stations, relay stations, or satellite stations.

The terminal 100 may be set to a public safety mode that can track the location of the terminal even when the power is turned off. The terminal 100 in which the public safety mode is set transmits positioning information, which is information for measuring its location or location, to the public safety management system 200.

The public safety management system 200 is a system for monitoring a terminal in which a public safety mode is set, and may set a public safety mode in the terminal 100, and receives positioning information from the terminal 100 in which the public safety mode is set. The location of the terminal 100 may be tracked and the terminal 100 may be controlled.

The terminal 100 cooperates with the plurality of reference nodes 300-500 to obtain information for position measurement. In addition, the terminal 100 directly calculates a location using information for location measurement, or transmits information for location measurement to another system, for example, the public safety management system 200, in the public safety management system 200. The position of the terminal 100 may be calculated.

The location of the terminal 100 may be calculated using distances from the plurality of reference nodes 300-500. When drawing a plurality of circles centered on the plurality of reference nodes 300-500 and having a radius of the distance between the reference nodes 300-500 and the terminal 100, the position where the plurality of circles overlap is defined by the terminal ( 100) may be determined. The position at which the plurality of circles overlap each other may be obtained by using an algorithm such as a least square method based on triangulation if the distance between the terminal 100 and each reference node 300-500 is known.

Referring to FIG. 2, even when the terminal (100 in FIG. 1) is powered off, a public safety mode capable of tracking a location is set (S210). The public safety mode may be set by a public safety mode setting request message received from the public safety management system 200 or set by a user. The public safety mode setting request message may include information for controlling the terminal operating in the public safety mode. When the public safety mode is set, the terminal 100 may change some settings of the terminal 100 to transmit information for location tracking to the public safety management system 200 even when the power is turned off. In particular, the terminal 100 may use an internal power source of the terminal 100 when the battery of the terminal 100 is removed or there is no battery remaining in the public safety mode.

The terminal 100 transmits a message reporting that the public safety mode is set, for example, a setting completion message, to the public safety management system (200 of FIG. 1) (S220), and the plurality of reference nodes (300-500 of FIG. 1). In step S230, information about a position measurement is obtained by performing a positioning procedure. Information for position measurement may be obtained using one or more measurement methods.

The terminal 100 transmits the acquired information for measuring the location to the public safety management system 200 (S240). The terminal 100 may transmit information for location measurement according to a transmission period set in the public safety mode. In addition, when the public safety mode is set in the sleep mode, the terminal 100 may increase the sleep cycle. In this case, the terminal 100 may change a transmission cycle, a sleep cycle, etc. according to its own state, for example, remaining battery information, or receive control information from the public safety management system 200 to change a transmission cycle, a sleep cycle, and the like. .

The public safety management system 200 calculates the location of the terminal 100 using the received information and tracks the location (S250).

Referring to FIG. 3, when the public safety mode is set in the terminal 100 (S310), the terminal (100 in FIG. 1) sends a message reporting that the public safety mode is set to the public safety management system (200 in FIG. 1). It transmits (S320).

The terminal 100 performs a positioning procedure with a plurality of reference nodes (300-500 of FIG. 1) (S330), and when the position calculation is directly possible in the terminal 100, the terminal 100 uses the obtained position measurement information. Calculate the position of (S340). Although the terminal 100 can calculate the position, whether to perform the position calculation directly according to the remaining battery capacity, or transmit information to perform the position calculation in the public safety management system (200 of FIG. 1) or the reference node (300-500) You can judge. In the case of performing the position calculation in the public safety management system 200, the procedure as shown in FIG. 2 may be performed. In the case of performing the position calculation in the reference node 300-500, the position calculated in the reference node 300-500 is calculated. The location information may be transmitted to the public safety management system 200.

The terminal 100 calculates the location and transmits its location to the public safety management system 200 (S350).

Referring to FIG. 4, an arbitrary step of a plurality of public safety modes is set in the terminal 100 (FIG. 1) (S410). The plurality of steps may be set separately according to the degree to which safety is required.

When the terminal 100 is set or entered into a step of performing a positioning procedure in the public safety mode, the terminal 100 acquires positioning information in cooperation with the reference node 300-500 of FIG. 1 (S420).

The terminal 100 transmits the obtained positioning information to the public safety management system (200 of FIG. 1) (S430).

The terminal 100 operates the timer when a certain step of the public safety mode is set, and enters the next step when the timer ends (S440). The timer can set a certain time required for each step, and if the public safety mode is not released after the time set for each step, the timer can enter the next step and reach the highest risk level. In the case of entering or entering the highest risk level, the terminal 100 maintains the highest risk level until the public safety mode is released.

Referring to FIG. 5, the public safety management system (200 of FIG. 1) transmits a public safety mode setting request message to a terminal (100 of FIG. 1) that is requested to set a public safety mode (S510).

When the public safety management system 200 receives the location information from the terminal 100 that is requested to set the public safety mode (S520), the location of the terminal 100 is tracked using the received information (S530). In this case, the public safety management system 200 may calculate the location of the terminal 100 when receiving information for location measurement from the terminal 100. In addition, the public safety management system 200 may control the terminal 100 so that the terminal 100 periodically transmits information for position measurement.

When the public safety management system 200 does not know whether the public safety mode is set in the terminal 100, for example, when it does not receive the positioning information or the public safety mode setting completion message from the terminal 100, The safety mode setting request message is retransmitted (S540). If the terminal 100 does not receive a public safety mode setting request message because it is not connected to the communication system, the terminal 100 may retransmit when the terminal 100 is registered in a communication system such as a base station. To this end, the public safety management system 200 may notify the communication system that the terminal 100 is a terminal for which the public safety mode is set, and may be retransmitted by being notified of the registration status of the terminal 100.

As described above, the public safety management system may provide a public purpose location-based service by monitoring a terminal and setting the location of the public safety mode.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims

As a method of measuring the position of the terminal using a public safety management system,

Acquiring positioning information of the terminal when a public safety mode capable of tracking a location is set even when the power is turned off; and

Transmitting the positioning information to the public safety management system.

Position measuring method comprising a.
In claim 1,

Receiving a public safety mode setting request message including information for controlling the terminal from the public safety management system,

And the terminal is set to the public safety mode in response to the public safety setting request message.
In claim 1,

And transmitting the setting completion message of the public safety mode to the public safety management system when the public safety mode is set.
In claim 1,

Acquiring the positioning information,

Obtaining information for position measurement in cooperation with at least one reference node, and

Calculating a position of the terminal using the information for measuring the position

Including;

And the positioning information includes information on the calculated position.
In claim 1,

Acquiring the positioning information includes acquiring information for position measurement in cooperation with at least one reference node;

And the location information includes information for the location measurement.
In claim 1,

The transmitting step

And transmitting the location information according to a transmission period set in the public safety mode.
In claim 6,

And changing the transmission period according to the remaining battery information of the terminal.
In claim 1,

And increasing a sleep cycle of the terminal when the public safety mode is set.
In claim 1,

And switching to the internal power supply of the terminal when the battery of the terminal is removed or there is no remaining battery power in the public safety mode.
A method for measuring a location of a terminal in which multiple levels of public safety mode are set,

Acquiring positioning information of the terminal when a first step of performing a positioning procedure is set among the plurality of public safety modes;

Transmitting the location information to a public safety management system, and

If the public safety mode is not released after a certain time, entering a second step that is the next step of the first step;

Position measuring method comprising a.
In claim 10,

And when the terminal is powered off in the public safety mode, entering the highest risk level among the plurality of steps.
In claim 10,

Acquiring the positioning information,

Obtaining information for position measurement in cooperation with at least one reference node, and

Computing the position of the terminal using the information for the position measurement,

And the positioning information includes information on the calculated position.
As a method of measuring the position of the terminal in the public safety management system,

Transmitting a public safety mode setting request message including information for controlling the terminal to a terminal to which the public safety mode setting is requested;

Receiving positioning information of the terminal from the terminal, and

Tracking the location of the terminal using the received location information;

Position measuring method comprising a.
In claim 13,

The tracking may include calculating the position of the terminal using the positioning information.
In claim 13,

Retransmitting the public safety mode setting request message when the location information is not received from the terminal.
The method of claim 15,

Informing the communication system that the terminal is a terminal to which a public safety mode setting is requested, and

Receiving notification of a registration status of the terminal from the communication system;

Position measuring method further comprising.