WO2022050787A1

WO2022050787A1 - Method and apparatus for determining communication method and frequency band for measuring position of terminal

Info

Publication number: WO2022050787A1
Application number: PCT/KR2021/012029
Authority: WO
Inventors: 문희찬; 박효순
Original assignee: 한양대학교 산학협력단; 주식회사 인포씨즈시스템
Priority date: 2020-09-04
Filing date: 2021-09-06
Publication date: 2022-03-10

Abstract

The present embodiments provide a position measurement server in an apparatus for determining a communication method and a frequency band for measuring the position of a terminal, wherein the position measurement server: determines a communication method or communication method candidates and a frequency band or frequency band candidates, which are to be used for position measurement of a target terminal, on the basis of information relating to a frequency band and a communication method allowing call establishment between the target terminal to be positioned and a mobile communication network to which the target terminal is connected, and information relating to a frequency band and a communication method supportable by a signal measurement device for measuring a signal of the target terminal; and transmits the determined details to the mobile communication network.

Description

Method and apparatus for determining a communication method and frequency band for location measurement of a terminal

The present embodiments relate to a method and apparatus for acquiring location information of a terminal using a mobile communication system.

A mobile communication system consists of a base station and a terminal. The conventional location estimation method estimates the location based on the signal transmitted by the terminal. In this case, a generally used method is to use a delay value of a signal required for a signal transmitted by the terminal to reach the base station. In addition, the distance between the base station and the terminal can be estimated based on the amount of radio attenuation generated in the channel through which the signal transmitted by the terminal arrives at the base station. As a communication method used for this, various methods for communicating between a conventional base station and a terminal may be used.

In the present disclosure, a terminal that is a target for measuring a location is referred to as a target terminal. A method for accurate location measurement for a target terminal has been proposed in the inventions of Korean Patent Application Nos. KR10-2019-0045762, KR10-2019-0048789, KR10-2020-0161677, KR10-2021-0053319, and the like. In these inventions, a terminal comprising an apparatus for obtaining uplink resource allocation information transmitted from a wireless communication system and an uplink receiver, and transmitting a signal through a corresponding uplink resource based on the uplink resource allocation information, is nearby. It is possible to obtain the location information of the terminal based on information such as whether it is in the location, the magnitude of the signal, and the time delay. In the above inventions, the base station of the mobile communication network forms a link with the target terminal. In addition, the measurement information of the uplink channel of the target terminal measured by the signal measuring device (which may also be referred to as a signal measuring device or a location measuring device) is sent to the location measuring server, and the location measuring server calculates the location of the target terminal .

The above-described location measurement method for the terminal can be utilized in applications requiring various location information. That is, it can be utilized to accurately identify the location of the terminal and provide various services based on the information.

In this case, it is important to determine which communication method and frequency band to use among various communication methods and frequency bands that can be supported for location measurement of the terminal.

In general, mobile communication terminals support various communication methods. For example, a mobile communication terminal includes communication functions for various bands such as GSM, W-CDMA, LTE, and 5G. Also, in the same communication method, a call to support location measurement between a base station and a terminal in various frequency bands A setting may be performed. In this case, the present disclosure proposes a method and apparatus capable of determining an optimal communication method or frequency band.

An embodiment devised to solve the above problem controls the communication unit and the communication unit, and information on a communication method and frequency band capable of establishing a call between a target terminal, which is a location measurement target, and a mobile communication network to which the target terminal is connected, and information about the target terminal. Based on the information about the communication method and frequency band supportable by the signal measuring device for measuring the signal, the communication method or communication method candidates and frequency band or frequency band candidates to be used for measuring the location of the target terminal are determined, and the determined contents It is possible to provide a location measurement server including a control unit for transmitting to a mobile communication network.

In addition, another embodiment controls the communication unit and the communication unit, obtains information about a communication method and frequency band supported by at least one signal measuring device for measuring a signal of a target terminal that is a location measurement target, and at least one signal measuring device may provide a location measurement server including a control unit for transmitting information on all supported communication methods and frequency bands to a mobile communication network.

The above-mentioned mobile communication network is a concept including a base station and a core network connected thereto, and can be interpreted as a mobile communication system excluding a terminal.

In addition, another embodiment controls the communication unit and the communication unit, and the target terminal that is the location measurement target, the signal measurement device for measuring the signal of the target terminal, and the mobile communication network to which the target terminal is connected each support communication method and information on frequency bands. Based on it, it is possible to provide a mobile communication network including a control unit for determining a communication method or communication method candidates and frequency band or frequency band candidates to be used for location measurement of a target terminal, and transmitting the determined content to a location measurement server.

In addition, another embodiment is a method for measuring a location of a terminal based on a measurement of a signal measuring device performed by a location measuring server, a communication method capable of establishing a call between a target terminal that is a location measurement target and a mobile communication network to which the target terminal is connected and obtaining information on a frequency band and information on a communication method and a frequency band supportable by the signal measuring device for measuring a signal of the target terminal. Based on the information on the supportable communication method and frequency band, the target terminal It is possible to provide a method comprising the steps of determining a communication method or communication method candidates to be used for location measurement and a frequency band or frequency band candidates, and transmitting a call establishment request including the determined content to a mobile communication network.

In addition, another embodiment transmits information about a communication method and a frequency band to a location measurement server, and a communication method or communication method candidates to be used for location measurement of a target terminal and a call including information on a frequency band or frequency band candidates Receives a setup request from the location measurement server, performs call setup for the target terminal based on the information included in the call setup request, and transmits call setup information including parameter information used in call setup to the location location server It is possible to provide a mobile communication network including a core network entity (core network entity).

In addition, another embodiment obtains information about a communication method and frequency band in which a call can be set up between a target terminal that is a location measurement target and a mobile communication network to which the target terminal is connected, and at least one signal measuring device for measuring the signal of the target terminal. obtains information about a communication method and frequency band that can be supported, performs call setup for a target terminal based on the obtained information and information included in a call setup request, It is possible to provide a mobile communication network including a core network entity that transmits call setup information to a location measurement server.

In addition, in another embodiment, in a method of measuring the location of a terminal based on the measurement of a signal measuring device, a communication method and frequency band in which a call can be set up between a target terminal that is a location measurement target and a mobile communication network to which the target terminal is connected obtaining information about a communication method and frequency band supported by each of the target terminal, which is the target terminal for location measurement, and the mobile communication network to which the target terminal is connected; A method comprising: obtaining information about a communication method and a frequency band; and determining a communication method or communication method candidates for setting a call for location measurement to a target terminal based on the information and determining a frequency band and frequency band candidates can provide

Through this embodiment, when location measurement for the target terminal is required, an optimal communication method and frequency band can be selected based on information on the communication method and frequency band supported by the mobile communication network, the signal measuring device, and the target terminal. there is.

1 is a diagram illustrating a call setup concept between a base station and a terminal in a mobile communication system.

2 is a diagram illustrating an uplink signal-based positioning system of a target terminal according to the present disclosure.

FIG. 3 is a diagram for explaining information transfer when a location measurement server selects a communication method and a frequency band to be used for location measurement according to an embodiment of the present disclosure.

4 is a diagram for explaining information transfer when a mobile communication network selects a communication method and a frequency band to be used for location measurement according to an embodiment of the present disclosure.

5 is a diagram for explaining an operation when a location measurement server selects a communication method and a frequency band to be used for location measurement according to an embodiment of the present disclosure.

6 is a diagram for explaining an operation when a mobile communication network selects a communication method and a frequency band to be used for location measurement according to an embodiment of the present disclosure.

7 is a view for explaining a signal measuring apparatus according to an embodiment of the present disclosure.

8 is a view for explaining a signal measuring apparatus according to another embodiment of the present disclosure.

9 is a view for explaining a location measurement server according to an embodiment of the present disclosure.

10 is a diagram for describing a core network according to an embodiment of the present disclosure.

11 is a flowchart illustrating a method for a location measurement server to select a communication method and a frequency band to be used for location measurement according to an embodiment of the present disclosure.

12 is a flowchart illustrating a method for a mobile communication network to select a communication method and a frequency band to be used for location measurement according to another embodiment of the present disclosure.

Hereinafter, some embodiments of the present disclosure will be described in detail with reference to exemplary drawings. In adding reference numerals to components of each drawing, the same components may have the same reference numerals as much as possible even though they are indicated in different drawings. In addition, in describing the present disclosure, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present disclosure, the detailed description may be omitted.

In addition, in describing the components of the present disclosure, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is formed between each component. It should be understood that elements may also be “connected,” “coupled,” or “connected.”

Unless otherwise defined, all terms (including technical and scientific terms) used in the present disclosure may be used in the meaning commonly understood by those of ordinary skill in the art to which the embodiments of the present disclosure pertain. . In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular. And the terms to be described later are terms defined in consideration of functions in the embodiments of the present disclosure, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout the present disclosure.

Hereinafter, some embodiments of the present disclosure will be described in detail with reference to exemplary drawings. In adding reference numerals to components of each drawing, the same components may have the same reference numerals as much as possible even though they are indicated in different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description may be omitted.

In the present disclosure, a wireless communication system is widely deployed to provide various communication services such as voice and packet data. A wireless communication system includes a user equipment (UE) and a base station (base station, BS, or eNB).

A user terminal in the present disclosure is a comprehensive concept meaning a terminal in wireless communication, and as well as UE (User Equipment) in WCDMA, LTE, HSPA, etc., MS (Mobile Station) in GSM, User Terminal (UT), SS (Subscriber Station), a wireless device (wireless device), etc. should be interpreted as a concept that includes all.

A base station or cell generally refers to a station communicating with a user terminal, and is a Node-B (Node-B), an evolved Node-B (eNB), a sector, a site, and a BTS (Node-B). Base Transceiver System), access point (Access Point), relay node (Relay Node), RRH (Remote Radio Head), RU (Radio Unit), may be called other terms such as a small cell.

That is, in this specification, a base station or cell is interpreted as a comprehensive meaning indicating some areas or functions covered by a base station controller (BSC) in CDMA, a NodeB in WCDMA, an eNB or a sector (site) in LTE, etc. It should be a megacell, macrocell, microcell, picocell, femtocell and relay node (relay node), RRH, RU, small cell communication range, etc., it means to cover all the various coverage areas.

In the various cells listed above, since there is a base station controlling each cell, the base station can be interpreted in two meanings. 1) in relation to the radio area, it may be the device itself providing a mega cell, a macro cell, a micro cell, a pico cell, a femto cell, or a small cell, or 2) may indicate the radio area itself. In 1), the devices providing a predetermined radio area are controlled by the same entity, or all devices interacting to form a radio area cooperatively are directed to the base station. A point, a transmission/reception point, a transmission point, a reception point, etc. become an embodiment of a base station according to a configuration method of a radio area. In 2), the radio area itself in which signals are received or transmitted from the point of view of the user terminal or the neighboring base station may be indicated to the base station.

Therefore, megacell, macrocell, microcell, picocell, femtocell, small cell, RRH, antenna, RU, LPN (Low Power Node), point, eNB, transmission/reception point, transmission point, and reception point are collectively referred to as a base station. do.

In the present disclosure, a cell is a component carrier having a coverage of a signal transmitted from a transmission/reception point or a coverage of a signal transmitted from a transmission/reception point (transmission point or transmission/reception point), and the transmission/reception point itself. can

In the present disclosure, a user terminal and a base station are two (Uplink or Downlink) transmitting and receiving subjects used to implement the technology or technical idea described in the present invention, and are used in an inclusive sense and are not limited by specifically designated terms or words. does not

Here, the uplink (Uplink, UL, or uplink) refers to a method for transmitting and receiving data to and from the base station by the user terminal, and the downlink (Downlink, DL, or downlink) transmits and receives data to the user terminal by the base station means how to

Uplink transmission and downlink transmission may use a time division duplex (TDD) method transmitted using different times, a frequency division duplex (FDD) method transmitted using different frequencies, a TDD method and an FDD method. Mixed methods may be used.

In addition, in a wireless communication system, a standard is configured by configuring an uplink and a downlink based on one carrier or a pair of carriers.

The uplink and downlink transmit control information through a control channel such as a Physical Downlink Control CHannel (PDCCH) and a Physical Uplink Control CHannel (PUCCH), and a Physical Downlink Shared CHannel (PDSCH), a Physical Uplink Shared CHannel (PUSCH), etc. It consists of the same data channel and transmits data.

Downlink may mean a communication or communication path from a multi-transmission/reception point to a terminal, and uplink may mean a communication or communication path from a terminal to a multi-transmission/reception point. In this case, in the downlink, the transmitter may be a part of multiple transmission/reception points, and the receiver may be a part of the terminal. In addition, in the uplink, the transmitter may be a part of the terminal, and the receiver may be a part of the multi-transmission/reception point.

Hereinafter, a situation in which signals are transmitted/received through channels such as PUCCH, PUSCH, PDCCH, and PDSCH may be expressed in the form of 'transmitting and receiving PUCCH, PUSCH, PDCCH and PDSCH'.

Meanwhile, High Layer Signaling described below includes RRC signaling for transmitting RRC information including RRC parameters.

The base station performs downlink transmission to the terminals. The base station is a physical downlink for transmitting downlink control information such as scheduling required for reception of a downlink data channel, which is a main physical channel for unicast transmission, and scheduling approval information for transmission in an uplink data channel. A control channel may be transmitted. Hereinafter, the transmission/reception of a signal through each channel will be described in the form of transmission/reception of the corresponding channel.

There is no limitation on the multiple access technique applied in the wireless communication system. Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Code Division Multiple Access (CDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Non-Orthogonal Multiple Access (NOMA), OFDM-TDMA, OFDM-FDMA, Various multiple access schemes such as OFDM-CDMA can be used. Here, NOMA includes Sparse Code Multiple Access (SCMA) and Low Density Spreading (LDS).

An embodiment of the present disclosure is asynchronous wireless communication that evolves to LTE/LTE-Advanced, IMT-2020 through GSM, WCDMA, HSPA, and synchronous wireless communication that evolves to CDMA, CDMA-2000 and UMB Resource allocation in the field can be applied.

In the present specification, a machine type communication (MTC) terminal may mean a terminal supporting low cost (or low complexity) or a terminal supporting coverage enhancement. Alternatively, in this specification, the MTC terminal may mean a terminal defined as a specific category for supporting low cost (or low complexity) and/or coverage enhancement.

In other words, in the present disclosure, the MTC terminal may mean a newly defined 3GPP Release-13 low cost (or low complexity) UE category/type that performs LTE-based MTC-related operations. Alternatively, in this specification, the MTC terminal supports improved coverage compared to the existing LTE coverage, or a UE category/type defined in 3GPP Release-12 or lower that supports low power consumption, or a newly defined Release-13 low cost (or low complexity) UE category/type. Alternatively, it may mean a further Enhanced MTC terminal defined in Release-14.

In the present disclosure, a NarrowBand Internet of Things (NB-IoT) terminal means a terminal supporting wireless access for cellular IoT. The objectives of NB-IoT technology include improved indoor coverage, support for large-scale, low-speed terminals, low latency sensitivity, ultra-low-cost terminal cost, low power consumption, and optimized network structure.

As a typical usage scenario in NR (New Radio) currently under discussion in 3GPP, eMBB (enhanced Mobile BroadBand), mMTC (massive machine type communication), and URLLC (Ultra Reliable and Low Latency Communication) are being raised.

In the present specification, frequencies, frames, subframes, resources, resource blocks, regions, bands, subbands, control channels, data channels, synchronization signals, various reference signals, various signals, and various messages related to NR (New Radio) in the present specification can be interpreted in various meanings used in the past or present or used in the future.

In the present specification, GPS (Global Positioning System) refers to a system that receives a signal transmitted from a system such as a satellite, measures its position by using it, and obtains time information, and includes systems such as Galileo and Glonas. can do. In addition, it can be interpreted as a variety of systems that receive a signal transmitted from the ground or the air, not a signal transmitted from a satellite, and acquire location and time information based on the received signal.

This embodiment describes a method and apparatus for acquiring information on a location of a specific terminal in a wireless communication system, particularly a mobile communication system.

This embodiment proposes a new type of communication device having both a downlink receiver and an uplink receiver. The proposed communication device may include one or more uplink signal receivers, and the one or more uplink signal receivers may be installed at different physical locations.

The communication device described in this embodiment may obtain information about which signal is transmitted from the terminal to the base station through the uplink by analyzing the downlink signal transmitted by the base station. In addition, it is possible to determine whether the uplink data is transmitted from the terminal to the base station through the uplink signal receiver, and determine the location of the corresponding terminal.

A related field of the present embodiments is a technology for obtaining location and movement information of terminals in a wireless communication system.

Applicable products and methods of the present embodiments are traffic information and public services through a wireless communication system.

As a field in which the present embodiments are expected to be applied in the future, they can be applied in various fields related to road control, traffic control, and security.

The present embodiments are expected to be applied in the future, and they can be applied to identify a specific user's movement, such as epidemiological investigation, or to function like a CCTV based on a signal transmitted by a terminal.

The present embodiments are applicable to estimating the location of missing persons through a mobile communication system, estimating the location for lifesaving in case of disaster and distress, and accurately identifying the location of the terminal to provide a location-based service.

The present embodiments are expected to be applied in the future to mobile communication base stations and services.

The technology most relevant to the present embodiments is a mobile communication system.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. And, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification.

Also, in this specification, various terms such as a searchable distance or a searchable range are used for a signal detection range for detecting an uplink signal from a target terminal, but they should be interpreted as the same meaning.

Also, in this specification, various terms such as a service radius of a cell, a cell radius, and a radius of a base station are used for the cell radius of the base station, but should be interpreted as the same meaning.

Also, in this specification, various terms such as a signal measuring device, a signal collector, a position measuring device, and a position measuring device are used for the signal measuring device, but should be interpreted with the same meaning.

Also, in this specification, the mobile communication network may be interpreted as meaning any one of the mobile communication network itself, at least one of nodes constituting the mobile communication network, or a base station.

Meanwhile, the embodiments described below may be applied individually or in any combination.

The configuration of the mobile communication system is shown in FIG. 1 . Referring to FIG. 1 , the mobile communication system includes a base station 10 and a terminal 11 . As a method of estimating the location of the terminal, the location is estimated based on the signal transmitted by the terminal 11 . In this case, a generally used method is to use a propagation delay value of a signal required for a signal transmitted by the terminal 11 to reach the base station 10 . Also, the distance between the base station 10 and the terminal 11 can be estimated based on the amount of radio attenuation generated in the channel through which the signal transmitted by the terminal 11 arrives at the base station 10 . In order to accurately measure the location of the target terminal, the target terminal must transmit an uplink signal for a certain period of time. And the base station or signal measuring device measures the signal transmitted by the target terminal.

When the terminal 11 is in a call state, the terminal 11 continuously exchanges signals with the base station 10 . Therefore, it is possible for the base station 10 to perform distance or location measurement based on the signal transmitted by the terminal 11 . In addition, when it is necessary for the terminal 11 to transmit a specific signal through more accurate measurement, the base station 10 may instruct the terminal 11 to transmit the signal. The specific signal may be a broadband periodic uplink signal.

Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. And, in describing the present disclosure, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present disclosure, the detailed description thereof will be omitted. In addition, the terms to be described later are terms defined in consideration of functions in the present disclosure, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification.

The present disclosure proposes a method for efficiently measuring the location of a target terminal by transmitting and receiving a signal to and from a base station and a terminal, and arranging a signal measuring device around a target terminal to be tracked. The signal measuring apparatus of the present disclosure captures a signal transmitted by the target terminal and measures the location of the target terminal based on this. In order to accurately measure the location of the target terminal, one or more signal measuring devices may be disposed around the target terminal. The signal measuring device of the present disclosure can be carried and used by a person, but it is also possible to install and use it in a vehicle, a drone, or the like. In addition, the conventional macro and small cell base station can be used as the signal measuring device of the present invention.

Figure 2 shows the operation of the positioning system proposed in the present disclosure. Referring to FIG. 2 , the base station 250 and the target terminal 210 exchange signals with each other in a mobile communication system. The signal measuring device of the present invention is disposed around the target terminal 210 to measure the location, receives a signal transmitted by the target terminal 210, and measures the location of the target terminal 210 based on this. At this time, the position of the target terminal 210 is measured based on the delay, the direction in which the signal transmitted from the target terminal 210 arrives at each signal measuring device 220, the direction in which it is received, and the magnitude of the received signal. In order to more accurately measure the location of the target terminal 210 , one or more

signal measuring devices

220 , 230 , and 240 may be disposed around the target terminal 210 . In addition, it is possible to more accurately measure the location of the target terminal 210 by combining the signal magnitude and time delay information received from the base station 250 with the information received from the location measuring device. In the above process, a directional antenna may be used in the signal measuring apparatus of the present disclosure to measure the direction in which the uplink signal of the target terminal is received.

Application No. 10-2018-0046139 "Method and Apparatus for Positioning a Mobile Communication Terminal", Application No. 10-2018-0048825 "Uplink Signal for Position Measurement of a Mobile Communication Terminal" as an example of implementation of the signal measuring device according to the present disclosure Setting method", Application No. 10-2018-0101066 "Method and apparatus for location measurement of a terminal in a mobile communication system", Application No. 10-2019-0045762 "Location measurement system of a mobile terminal", Application No. 10-2019-0045762 "Location measurement system of mobile terminal", Application No. 10-2019-0048789 "Link signal setting method for location measurement of mobile communication terminal", Application No. 10-2020-0161677 "For location measurement of target terminal in wireless communication system Reference may be made to the content disclosed in "Method and Apparatus", Application No. 10-2021-0053319 "10-2021-0053319". In addition, a conventional base station may be used as a signal measuring device.

In the present disclosure, in measuring the location of the target terminal using the system of FIG. 2, it is necessary to establish a call between the target terminal and the serving base station. In this case, a method for efficiently determining a communication method and a frequency band for establishing a call between a target terminal and a serving base station is proposed. The communication method may be one of various systems such as GSM, W-CDMA, LTE, and 5G used in a mobile communication system.

In the present disclosure, various devices may determine the communication method and frequency band in which the above-described call is established.

First, according to a proposed embodiment, the location measurement server may determine a communication method and a frequency band for performing call setup to a target terminal. To this end, the location measurement server may acquire information on the communication method and frequency band used for each communication service provider. In addition, the location measurement server may obtain information about the target terminal. The information on the target terminal may include information on a communication service provider subscribed to by the target terminal and information on a communication method and frequency band supported by the target terminal. In addition, it is possible to obtain information such as the model name of the terminal and secure information on a supportable communication method and frequency band based on the information. In addition, the location measurement server may collect information on a communication method and a frequency band supported by a signal measurement device to perform signal measurement on the target terminal. Based on the information, the location measurement server may determine a communication method and frequency band to set a call.

3 illustrates an operation for the above-described process. Referring to FIG. 3 , the location measurement server acquires communication method and frequency information of a mobile communication network. The location measurement server may store communication method and frequency information of the mobile communication network in advance, or may receive it from the mobile communication network. Here, when it is necessary to receive the corresponding information from the mobile communication network each time or periodically, a problem may occur in a specific communication method or frequency band or the usage may be rushed.

In addition, the location measurement server may obtain information about the target terminal to measure the location. Corresponding information may be obtained from an external service server. That is, the location measurement server may receive a request for location measurement for a specific terminal from the server providing the service. The request may include information on business operators subscribed to by the target terminal, communication method supported by the target terminal, and frequency band information.

In addition, the location measurement server may acquire information on a communication method and a frequency band supported by a signal measurement device to perform location measurement. In the above process, the location measurement server may acquire technical characteristics and specifications provided by the signal measurement device for each communication method and frequency band together.

According to an embodiment, the location measurement server may determine a communication method to be used for location measurement with respect to the target terminal based on the information of the mobile communication network, the information of the target terminal, and the information of the signal measuring device. In addition, the location measurement server may determine the frequency band to be used for location measurement as well as the communication method in the above process.

In the above process, the location measurement server may select a communication method supported by the target terminal, the mobile communication network to which the target terminal subscribes, and the signal measurement device. In addition, the location measurement server may select a frequency band supported by all of the target terminal, the mobile communication network, and the signal measurement device. In addition, when there are multiple communication methods that can be supported, the location measurement server may select a system that performs a communication service with the widest bandwidth. In addition, when multiple frequency bands are available within one communication method, the location measurement server may select the lowest frequency band among them. Alternatively, the location measurement server may select the easiest band to use the directional antenna in the signal measurement device from among several frequency bands.

The location measurement server transmits a call setup request to the target terminal including information on the selected communication method and frequency band to the mobile communication network. The mobile communication network establishes a call to the target terminal based on the information. That is, the mobile communication network establishes a call using the communication method selected by the location measurement server. Also, the mobile communication network may set up a call in the frequency band selected in the above process.

In addition, after call setup, the mobile communication network may transmit a call setup completion message including parameters related to call setup. The parameters may include a transmission period of an uplink signal, a type of channel, a transmission power of the target terminal, a code such as DMRS used by the target terminal, or an RNTI of the target terminal. Alternatively, as another example, when SRS is used, information on a period, time, and code used for transmitting the SRS may be transmitted. In addition, information on a frequency band in which a call is established to the target terminal may be included. The location measurement server that has received the call setup completion message may transmit it to signal measurement devices.

In the above process, it has been described that the location measurement server determines both the communication method and the frequency band to be used. However, according to another example, the mobile communication network may determine only the communication method to be used by the location measurement server and the frequency band in which the call is actually set in the communication method. The determination of such a mobile communication network may be performed in a core network (Evolved Packet Core (EPC)).

Alternatively, according to another example, in the process, the location measurement server may transmit only candidates of available communication methods or frequency bands to the mobile communication network. From among the sent candidates, an actual call connection may be determined by the mobile communication network and proceeded. The determination may be performed in a core network (EPC). In addition, the location measurement server may transmit to the mobile communication network including the priority when transmitting candidates of the available communication method / frequency band. After completing call setup, the mobile communication network may transmit parameters related to call setup to the location measurement server. In addition, the location measurement server may transmit the information to the signal measurement devices. The parameter may include information on the selected communication method and frequency band.

According to another embodiment, the location measurement server may request call setup by transmitting information of a communication method and a frequency band supported by the signal measurement device to the mobile communication network. In the above process, when a plurality of signal measuring devices measure the location of one target terminal, the location measuring server may transmit information of a communication method and a band commonly supported by the signal measuring devices.

In the above process, the location measurement server may transmit a unique identification number for the target terminal. Alternatively, the mobile communication network may acquire a unique identification number of the target terminal from an external service server or program. In addition, it is possible to secure the model information of the terminal. The mobile communication network may acquire information of a communication method and a frequency band supported by the terminal for the identification information.

In addition, the mobile communication network may determine the communication method and frequency band for setting a call to the target terminal based on the information of the communication method and frequency band supportable by the signal measuring device. In the above process, the mobile communication network may determine a communication method and a frequency band that the signal measuring device and the target terminal can use in common. In this process, a communication method and a frequency band supported by the mobile communication network should be considered. In the above process, an approximate location of the target terminal or a supportable communication method and frequency band in its vicinity may be used. In addition, information of a communication method and frequency band previously used for approximate location measurement may be used. That is, when the supportable communication method and frequency band are uncertain, the communication method and frequency band used for the immediately previous or approximate location may be used.

The mobile communication network may establish a call using the determined communication method and frequency band. When the call setup is completed, the mobile communication network may transmit information on a communication method and frequency band in which the call is established to a location measurement server or a signal measurement device. The location measurement server transmits the call setup information to the signal measurement device. The signal measuring apparatus detects and measures the uplink signal of the target terminal based on the call setup information.

The application server or program based on the location of the terminal may request location information on the target terminal from the mobile communication network. The request may be made through a unique identification number (including a phone number) of the terminal. Upon receiving the request, the mobile communication network may transmit the approximate location of the terminal to the application server.

The application server that has received the information transmits approximate location information such as the location of the base station where the target terminal is located, operator information, and the ID of the terminal to be found to the location measurement server of the present disclosure, so that the location measurement according to the present disclosure can be started. can The ID of the terminal may include identification information such as a phone number or an event number of the terminal. As the location measurement server receives the operator information, there is no need for the location measurement system of the present disclosure to additionally acquire operator information of the target terminal. In communication with a mobile communication network to be used later, a request for call setup and operation conversion is transmitted to the operator with reference to the operator information. In this case, information such as an ID of a terminal and a cell ID may also be delivered to the communication service provider.

As another example, the mobile communication network that has received a request for location measurement of the target terminal from the application server or program determines the approximate location of the target terminal. In the above process, information of the base station in which the target terminal is located may be utilized. For example, information of a base station that has been previously called can be utilized. Thereafter, when a more precise location measurement of the target terminal is required, the mobile communication network performs more precise location measurement by using the uplink signal measurement result of the target terminal in a signal measuring device near the target terminal, can inform the program. That is, the mobile communication network may set up a call to the target terminal and request the uplink signal measurement of the target terminal while notifying a nearby signal measuring device of parameters related to the call setup. The parameter may include information such as a temporary identification number such as an RNTI of the terminal, a type of an uplink channel, a transmission period, and a code used for transmission. Alternatively, as allocation information of uplink resources, information on a pattern for a resource through which an uplink channel is transmitted may be included. The position measurement result of the target terminal is more precisely calculated based on the signal measurement values received from the signal measurement devices. The calculation may be performed by the location measurement server. The calculated location value of the target terminal may be initially transmitted to the application server or program requesting the location of the target terminal.

When the base station of the mobile communication network receives a location measurement request for the target terminal, the uplink signal setting and resource allocation information of the target terminal, identification information of the target terminal such as RNTI, etc. may be transmitted to the signal measuring device. The base station of the mobile communication network may transmit the information directly to the signal measuring apparatus, but may also transmit the information to the communication server and the communication server may transmit the information to the signal measuring apparatus. According to an example, the role of the communication server may be performed by the location measurement server. Based on the information, the signal measuring apparatus of the present disclosure detects and measures an uplink signal of a target terminal.

In order for the signal measuring apparatus to detect and measure the uplink signal of the target terminal, it is necessary to obtain signal setting and resource allocation information of the uplink signal. As an example of the above process, the signal measuring apparatus receives the identification information of the terminal, and analyzes the downlink signal transmitted by the base station based on the received identification information to obtain resource allocation information and signal configuration information transmitted to the target terminal. The RNTI of the target terminal may be used as the identification information. As another example, the base station of the mobile communication network notifies the uplink signal setting and resource allocation information of the target terminal to the signal measuring apparatus. As another example, a specific signal setting and resource are promised in advance between a base station of a mobile communication network and a signal measuring device, and the base station sets uplink signal transmission of the target terminal according to the promise, and determines whether the target terminal transmits the signal. It can only inform the signal measuring device whether or not It is revealed that the concepts proposed in the present disclosure can be applied to a wide range of techniques for measuring the location of a target terminal regardless of the above methods.

5 illustrates an example of a flow of messages exchanged between devices when the location measurement server determines a communication method and bandwidth for establishing a call based on the above description. In FIG. 5, apparatuses of a signal measurement device, a location measurement server, a core network of a mobile communication network, and base stations are illustrated, and message transmission between the apparatuses is illustrated.

6 illustrates an example of a flow of messages exchanged between devices when the mobile communication network determines a communication method and bandwidth for establishing a call based on the above description. 6 shows a process of performing the determination in the core network of the mobile communication network. 6 shows a signal measuring device, a location measuring server, a core network of a mobile communication network, and devices of base stations, and transmission of messages between devices is shown.

5 and 6, a case in which a communication method and frequency band to be used for location measurement of a target terminal in a location measurement server or a mobile communication network is determined will be described. However, the location measurement server may determine the communication method and frequency band based on the information on the communication method and frequency bands in which a call can be set between the target terminal and the mobile communication network. The information may be transmitted by a mobile communication network.

In addition, the information may be transmitted to one or more location measurement devices to determine a communication method and frequency band to be used for location measurement by the location measurement device. Even in this case, it is decided in consideration of the communication method and frequency band supported by the position finder. In this case, as an example of the transmitted information, it may be composed of information of a communication method and frequency band supported by the target terminal, and information of a communication method and frequency band supported by the mobile communication network.

7 is a diagram illustrating a configuration of a signal measuring apparatus according to an embodiment of the present disclosure. Referring to FIG. 7 , the signal measuring apparatus of the present disclosure includes one or more downlink signal receivers 710 and one or more uplink signal receivers 720 to receive a mobile communication signal. In addition, the signal measuring apparatus includes a control unit 730 for controlling the received signal. Optionally, the signal measuring device includes a communication unit 740 capable of communicating with a base station or a location measuring server or other signal measuring device, a GPS receiving unit 770 for synchronizing with absolute time, an input unit for receiving an input from a user ( 750) and a display unit 760 that displays information processed by the control unit 730 may be included.

Here, the downlink signal receiver 710 and the uplink signal receiver 720 may be an LTE downlink signal receiver and an LTE uplink signal receiver. In the present disclosure, the downlink signal receiver may operate by setting a frequency band in which the target terminal transmits control information for a frequency band in which the uplink signal is transmitted. Although the present disclosure has been described with reference to the LTE system, it is to be noted that the present disclosure is substantially equally applicable to other wireless communication systems. That is, if the communication system in which the call of the target terminal is set is GSM or W-CDMA, the downlink receiver 710 and the uplink receiver 720 are implemented as receivers of a GSM or W-CDMA system, respectively.

The LTE downlink signal receiving unit serves to acquire an initial LTE downlink signal to acquire system time synchronization, and to acquire a base station ID and system information. In addition, by measuring the signal transmitted from the base station, the strength of the downlink signal is measured and displayed on the display. In addition, the ID of the base station or whether it is in the service range of the desired base station is displayed. Through this, it is possible to check whether the user is within the service range of the desired base station. It receives BCCH and the like through a downlink receiver and acquires system information.

The LTE uplink signal receiver detects an uplink signal transmitted by a target terminal and performs measurement to obtain location-related information.

In order to detect and measure the uplink signal of the target terminal, the signal measuring apparatus must obtain configuration and resource allocation information for the uplink signal transmitted by the target terminal. In one embodiment of the present invention, the signal measuring apparatus obtains identification information of the target terminal, receives the downlink signal transmitted by the base station using the downlink signal receiver 710 based on this, and analyzes it to receive the uplink signal of the target terminal. Link signal configuration and resource allocation information may be acquired. In the above process, the base station of the mobile communication network may inform the signal measuring apparatus of the identification information of the target terminal after receiving the location request for the target terminal. In addition, after the base station informs the communication server of the information, the communication server may notify the signal measuring device. Further, in another example of the present disclosure, the uplink setting and resource allocation information of the target terminal may be received from the communication server through the communication unit 740 , and a location measurement server may be used as the communication server. In another example, a signal of a target terminal may be set to transmit a signal of a target terminal in a predefined resource and time between the mobile communication network and the signal measuring device, and the resource allocation information and the configuration information may be used. The controller 730 obtains the uplink channel setting and resource allocation information of the target terminal, and controls the process of detecting and measuring the target terminal signal.

In addition, the signal measuring apparatus of the present disclosure may calculate the difference between the time points at which the uplink signal of the target terminal is received by each signal measuring apparatus by securing an absolute time reference. In the example of FIG. 7 , the signal measuring devices secure temporal synchronization based on the GPS signal received from the GPS receiving unit 770 to perform this role. In this process, in addition to GPS, other technologies such as SBAS and Galileo used for positioning or time information can be used or combined with GPS can be used. However, the present disclosure may use another method capable of ensuring mutual time synchronization between different types of signal measuring devices or discriminating a difference in arrival time. For example, it can be applied if a high-precision watch is used and the synchronization between signal measuring devices can be adjusted in advance or the relative difference can be calculated. In addition, the measurement of time may be performed based on a time difference between a time point at which a specific signal of the LTE downlink signal receiver is received and a time point at which an uplink signal of another user is received. Information on such reception time is transmitted to the location measurement server.

In the present disclosure, when communication with the location measurement server or direct communication with other signal measurement devices is required, a separate communication unit 740 may be used. The communication unit 740 may use a band different from that for measuring the signal of the target terminal. This is so that the communication device does not interfere with the uplink signal transmitted by the target terminal.

The signal measuring device of FIG. 7 includes an output device such as a display to display the location of the target terminal to the user. In addition, there is provided an input unit 750 for user input, through the input unit 750, the user inputs additional information, such as manually inputting information on the current location of the signal measuring device, to increase the accuracy of location measurement. can Also, the searcher may input a location request for the target terminal through the input unit 750 .

The control unit 730 of FIG. 7 controls the operation of the above-described signal measuring apparatus. The control unit 730 is connected to each device and serves to control information reception, measurement, communication, input/output, etc. described in this specification.

8 is a diagram illustrating a configuration of a signal measuring apparatus according to another embodiment of the present disclosure. The difference from the configuration of the signal measuring device of FIG. 7 is that the function of communication with other external equipment (position measuring server or other signal measuring device), display, input device, etc. is performed by an external terminal 850 such as a smart phone or tablet. The point is that it is implemented by reducing the number of parts of the signal measuring device of the present disclosure in connection with. The signal measuring apparatus 800 of FIG. 8 includes a downlink signal receiver 810, an uplink signal receiver 820, a controller 830, and a GPS receiver 840, and includes a communication function with other equipment, a display function, The input function is implemented by connecting to the terminal 850 such as a commercial tablet or smartphone. A portion indicated in a dotted rectangle in FIG. 8 is an implementation of a new type of signal measuring device. The connection between the controller 830 and the terminal 850 of FIG. 8 may be connected using a wired connection such as USB, or a wired connection such as WIFI may be used.

Application No. 10-2018-0046139 "Method and Apparatus for Positioning a Mobile Communication Terminal", Application No. 10-2018-0048825 "Uplink Signal Setting for Position Measurement of a Mobile Communication Terminal" as an example of implementation of the signal measuring device of the present disclosure Method", Application No. 10-2018-0101066 "Method and Apparatus for Positioning a Terminal in a Mobile Communication System", Application No. 10-2019-0045762 "Location Measurement System of a Mobile Terminal", Application No. 10-2019-0045762 " Location measurement system of mobile terminal", Application No. 10-2019-0048789 "Method for setting link signal for location measurement of mobile communication terminal", Application No. 10-2020-0161677 "Method for location measurement of target terminal in wireless communication system and device", application number 10-2021-0053319 "10-2021-0053319" may be used or partially changed.

The present disclosure proposes a system in which the target terminal transmits signals of different types depending on the environment in the location measurement system for measuring the location of the target terminal, and the location measurement server calculates the location using a different algorithm. In addition, it is proposed to set the master's signal measuring device to provide a control function different from that of the general signal measuring device.

9 shows an example of the configuration of the location measurement server of the present disclosure. The location measurement server includes a communication unit 910 . The communication unit 910 has a communication function with a mobile communication network and a communication function with a signal measuring device. The communication function with the mobile communication network receives identification information of the target terminal or uplink channel setting and resource allocation information.

In addition, the communication unit 910 receives state information of the target terminal, cell ID information of a base station forming a link with the target terminal, and cell ID information of a base station maintaining adjacent time synchronization. In addition, when the location measurement request of a specific target terminal is transmitted to the location measurement server, the link establishment request for the target terminal is transmitted to the mobile communication network. The location measurement request may be requested by a signal measuring device or an emergency rescue center, or an input device connected to a location measurement server may be requested through the input device.

When the signal measuring device requests location measurement, it is transmitted through the communication unit 910 . In this case, the target terminal's phone number, IMSI, etc. may be used as identification information of the target terminal. In addition, a serial number or TMSI of the terminal may be used. The communication function with the signal measuring device functions to communicate with the signal measuring device. The signal measurement device transmits the signal measurement result of the target terminal, and the location measurement server calculates the location of the target terminal based on this, and transmits it back to the signal measurement apparatus. The signal measurement result includes information such as signal strength, time delay, and reception direction of the target terminal. In addition, it may include information on the location of the signal measuring device and the time between signal measurements.

The location measurement server includes a control unit 920 . The control unit 920 controls a function of requesting the mobile communication network to form a link for the target terminal, and receiving identification information or resource allocation and channel setting information of the target terminal from the base station of the mobile communication network. In addition, it receives the state information of the target terminal, the cell ID of the base station forming a link with the target terminal, and the cell ID information of another base station maintaining the adjacent time synchronization.

The location measurement server performs a function of transmitting the information received from the mobile communication network to the signal measurement device. In addition, it receives the uplink measurement result of the target terminal from one or more signal measurement apparatuses, calculates the location of the target terminal, and transmits the result to the signal measurement apparatus. In addition, the control unit controls a function of receiving a location measurement request for a target terminal from a signal measuring device or another device and transmitting it to a mobile communication network.

The control unit 920 controls the communication unit 910, and measures information on a communication method and frequency band in which a call can be set up between a target terminal, which is a location measurement target, and a mobile communication network to which the target terminal is connected, and a signal measurement for measuring a signal of the target terminal. It is possible to obtain information about a communication method and a frequency band supported by the device. The controller 920 may determine a communication method or communication method candidates and frequency band or frequency band candidates to be used for measuring the location of the target terminal based on the obtained information. The controller 920 may transmit the determined content to the mobile communication network. In this case, the information on the communication method and frequency band in which a call can be set between the target terminal and the mobile communication network to which the target terminal is connected includes information on the communication method and the frequency band supported by the target terminal and the mobile communication network to which the target terminal is connected, respectively. may include

The controller 920 may store information on a communication method and a frequency band supported by the mobile communication network in advance in a predetermined storage unit (not shown). Alternatively, the control unit 920 may receive the corresponding information from the mobile communication network through the communication unit 910 .

The control unit 920 may receive information about a communication method and a frequency band supported by the target terminal from the mobile communication network. Alternatively, the controller 920 may receive a location measurement request for the target terminal including the corresponding information.

The controller 920 may receive information about a communication method and a frequency band supported by the signal measuring device from the signal measuring device.

The control unit 920 determines a communication method and a frequency band to be used for location measurement of the target terminal, determines a communication method and frequency band candidates to use for location measurement of the target terminal, based on the above-described information, or Communication method candidates and frequency band candidates to be used for location measurement of the target terminal may be determined.

The control unit 920 may determine a communication method supported by all of the target terminal, the signal measuring device, and the mobile communication network as the communication method to be used for measuring the location of the target terminal. In this case, when there are a plurality of communication methods supported by all of the target terminal, the signal measuring device, and the mobile communication network, the controller 920 may determine the communication method with the widest bandwidth to be used as the communication method to use for measuring the location of the target terminal. there is.

The controller 920 may determine a frequency band supported by all of the target terminal, the signal measuring device, and the mobile communication network as a frequency band to be used for measuring the location of the target terminal. In this case, when there are a plurality of frequency bands supported by the target terminal, the signal measuring device, and the mobile communication network, the controller 920 selects the lowest frequency band or the frequency band with the best performance when measuring the signal by the signal measuring device. It can be determined as the frequency band to be used for position measurement.

The controller 920 may transmit the determined content and the call setup request to the mobile communication network. The controller 920 may receive call setup information including parameter information used in call setup according to a call setup request, and transmit the received call setup information to the signal measuring device.

The controller 920 may transmit identification information on the target terminal to the mobile communication network. The control unit 920 may receive information on a communication method and a frequency band supported by the terminal corresponding to the identification information found in the mobile communication network.

In addition, the controller 920 may acquire information about a communication method and a frequency band supported by at least one signal measuring device for measuring a signal of a target terminal, which is a location measurement target. In this case, the controller 920 may transmit information about a communication method and a frequency band supported by at least one signal measuring device to the mobile communication network. The controller 920 may transmit information on a communication method and a frequency band to the mobile communication network together with a call setup request to the target terminal.

10 shows an example of the configuration of the core network of the present disclosure. 10 shows a schematic configuration of EPC, which is a core network structure in a 3GPP LTE network. EPC is designed to simplify network structure, improve interoperability with various wireless access technologies, support All-IP network, authentication and billing functions, deliver data in packet units, and separate user data and signaling data. have characteristics.

As shown in Fig. 10, the EPC is composed of a plurality of network entities. In FIG. 10 , a UE 1010 as a terminal and an eNodeB 1020 as a base station correspond to an LTE entity related to a radio access network. In addition, MME (Mobility Management Entity. 1030), S-GW (Serving G/W, 1050), P-GW (PDN Gateway, 1060), HSS (Home Subscriber Server, 1040), etc. are related to CORE, that is, EPC and It corresponds to the related object.

The MME 1030 performs call processing-related operations such as session management for a call and mobility management. In addition, the MME 1030 performs UE authentication, manages a GTP tunnel ( UE - eNodeB- SGW - PGW ), and holds all subscriber information.

The S-GW 1050 includes an eNodeB-A and an eNode-B, and the UE initially connects to the eNodeB-A. While the UE moves, the connection of the eNodeB-A is released, and a handover of accessing the eNodeB-B is performed. In this handover process, the S-GW 1050 performs an anchoring role.

The P-GW 1060 allocates an IP address to the UE and performs an anchoring role when handover occurs between S-GWs. In addition, the QoS policy of the UE is applied and the UE's Accounting Data (traffic, access time, etc.) is managed.

The HSS 1040 corresponds to a database storing subscriber information.

As described above, in the present disclosure, determination of a communication method and frequency band to be used for location measurement may be performed in a core network on a mobile communication network. According to an example, the corresponding operation may be performed in the MME 1030 .

That is, the mobile communication network transmits information about a communication method and frequency band in which a call can be set up between a target terminal, which is a location measurement target, and a mobile communication network to which the target terminal is connected, to the location measurement server, and a communication method to be used for location measurement of the target terminal Alternatively, receiving a call setup request including communication method candidates and information on a frequency band or frequency band candidates from a location measurement server, performing call setup for a target terminal based on the information included in the call setup request, and call setup It may include a core network entity that transmits call setup information including parameter information used at the time to the location measurement server.

In this case, when information on communication method candidates or frequency band candidates to be used for location measurement of the target terminal is included in the call setup request, the core network entity is configured to measure the location of the target terminal from among the communication method candidates or frequency band candidates. You can decide which communication method and frequency band to use.

Alternatively, the mobile communication network acquires information about a communication method and frequency band supported by a target terminal, which is a location measurement target, and a mobile communication network to which the target terminal is connected, respectively, and at least one signal measuring device for measuring a signal of the target terminal. obtains information about a communication method and frequency band that can be supported, performs call setup for a target terminal based on the obtained information and information included in a call setup request, It may include a core network entity that transmits call setup information to the location measurement server.

According to another example, the mobile communication network controls the communication unit and the communication unit, and each of a target terminal that is a location measurement target, a signal measurement device that measures a signal of the target terminal, and a mobile communication network to which the target terminal is connected can support communication methods and frequency bands. Based on the information on the target terminal, the communication method or communication method candidates and frequency band or frequency band candidates to be used for location measurement of the target terminal, and may include a control unit for transmitting the determined content to the location measurement server.

In this case, the controller may determine a communication method and a frequency band to be used for measuring the location of the target terminal, and may set a call to the target terminal according to the determination. In addition, the control unit may transmit information on call setup to a location measurement server or a signal measurement device.

10 illustrates the configuration of the core network in the LTE system, but is not limited thereto. The configuration and operation of the core network may vary according to other communication schemes, and the contents of the core network described in the present disclosure may be applied substantially the same even in this case.

Hereinafter, a method of performing uplink transmission/reception in detail will be described with reference to related drawings.

Referring to FIG. 11 , the location measurement server may obtain information about a communication method and frequency band supported by a target terminal that is a location measurement target, a signal measurement device for measuring a signal of the target terminal, and a mobile communication network to which the target terminal is connected. There is (S100). In addition, without acquiring information on the communication method and frequency band supported by the target terminal and the mobile communication network, respectively, information on the communication method and frequency band that enables call setup between the target terminal and the mobile communication network near the current location of the target terminal is acquired can do. This can reduce the amount of messages you send. In this case, the information on the communication method and frequency band in which a call can be set between the target terminal and the mobile communication network to which the target terminal is connected includes information on the communication method and the frequency band supported by the target terminal and the mobile communication network to which the target terminal is connected, respectively. may include

The location measurement server may store communication method and frequency information of the mobile communication network in advance, or may receive it from the mobile communication network.

In addition, the location measurement server may obtain information about the target terminal to measure the location. According to an example, the corresponding information may be obtained from an external service server. That is, the location measurement server may receive a request for location measurement for a specific terminal from the server providing the service. The request may include information on business operators subscribed to by the target terminal, communication method supported by the target terminal, and frequency band information.

In addition, the location measurement server may acquire information on a communication method and a frequency band supported by a signal measurement device to perform location measurement. The location measurement server may acquire technical characteristics and specifications provided by the signal measurement device for each communication method and frequency band together.

Referring to FIG. 11 , the location measurement server may determine a communication method or communication method candidates and frequency band or frequency band candidates to be used for location measurement of a target terminal based on information about a supportable communication method and frequency band ( S110).

According to an example, the location measurement server may determine a communication method to be used for location measurement with respect to the target terminal based on information on the mobile communication network, information on the target terminal, and information on the signal measuring device. In addition, the location measurement server may determine the frequency band to be used for location measurement as well as the communication method in the above process.

The location measurement server may select a communication method supported by the target terminal, the mobile communication network to which the target terminal subscribes, and the signal measurement device. In addition, the location measurement server may select a frequency band supported by all of the target terminal, the mobile communication network, and the signal measurement device.

In addition, when there are multiple communication methods that can be supported, the location measurement server may select a system that performs a communication service with the widest bandwidth. In addition, when multiple frequency bands are available within one communication method, the location measurement server may select the lowest frequency band among them. Alternatively, the location measurement server may select the easiest band to use the directional antenna in the signal measurement device from among several frequency bands.

According to another example, only the communication method to be used by the location measurement server is determined, and the frequency band in which the call is actually set in the communication method may be determined by the mobile communication network. Determination of such a mobile communication network may be performed in a core network (EPC).

According to another example, the location measurement server may transmit only candidates of available communication methods or frequency bands to the mobile communication network. From among the sent candidates, an actual call connection may be determined by the mobile communication network and proceeded. The determination may be performed in a core network (EPC).

In this case, the location measurement server may transmit the candidates of the available communication method/frequency band to the mobile communication network including the priority when transmitting the candidates. After completing call setup, the mobile communication network may transmit parameters related to call setup to the location measurement server. In addition, the location measurement server may transmit the information to the signal measurement devices.

Referring to FIG. 11 , the location measurement server may transmit a call setup request including the determined content to the mobile communication network (S120).

The location measurement server may transmit a call setup request for the target terminal including information of the selected communication method and frequency band to the mobile communication network. The mobile communication network establishes a call to the target terminal based on the information. That is, the mobile communication network establishes a call using the communication method selected by the location measurement server. Also, the mobile communication network may set up a call in the frequency band selected in the above process.

In addition, after call setup, the mobile communication network may transmit a call setup completion message including parameters related to call setup. The parameters may include a transmission period of an uplink signal, a type of channel, a transmission power of a target terminal, a code of a DMRS used by the target terminal, or an RNTI of the target terminal. In addition, information on a frequency band in which a call is established to the target terminal may be included. The location measurement server that has received the call setup completion message may transmit it to signal measurement devices.

Accordingly, when the location measurement of the target terminal is required, the optimal communication method and frequency band can be selected based on information on the communication method and frequency band supported by the mobile communication network, the signal measuring device, and the target terminal.

Referring to FIG. 12 , the mobile communication network may receive information about a communication method and frequency band supported by a target terminal that is a location measurement target and a mobile communication network to which the target terminal is connected from the location measurement server ( S200 ).

The mobile communication network may receive information of a communication method and a frequency band supported by the signal measurement device from the location measurement server. When multiple signal measuring devices measure the location of one target terminal, the location measuring server may transmit information on a communication method and band commonly supported by the signal measuring devices.

In this case, the location measurement server may transmit a unique identification number for the target terminal. Alternatively, the mobile communication network may acquire a unique identification number of the target terminal from an external service server or program. The mobile communication network may acquire information of a communication method and a frequency band supported by the terminal for the identification information.

12, the mobile communication network receives a call setup request including information on a communication method or communication method candidates to be used for location measurement of a target terminal and information on a frequency band or frequency band candidates from the location measurement server (S210) and , based on the information included in the call setup request, it is possible to perform call setup for the target terminal (S220).

The mobile communication network may determine the communication method and frequency band for setting a call to the target terminal based on the information of the communication method and frequency band supported by the signal measuring device. In the above process, the mobile communication network may determine a communication method and a frequency band that the signal measuring device and the target terminal can use in common. The mobile communication network may establish a call using the determined communication method and frequency band.

Referring to FIG. 12 , the mobile communication network may transmit call setup information including parameter information used in call setup to the location measurement server ( S230 ).

When the call setup is completed, the mobile communication network may transmit information on a communication method and frequency band in which the call is established to a location measurement server or a signal measurement device. The location measurement server transmits the call setup information to the signal measurement device. The signal measuring apparatus detects and measures the uplink signal of the target terminal based on the call setup information.

Alternatively, according to another example, the method of measuring the location of the terminal based on the measurement of the signal measuring device includes information about a communication method and frequency band in which a call can be set between a target terminal, which is a location measurement target, and a mobile communication network to which the target terminal is connected. Obtaining information on a communication method and frequency band supported by the target terminal, which is the target terminal for location measurement, and the mobile communication network to which the target terminal is connected, respectively. Obtaining information on a communication method and frequency band to perform a communication method and determining a communication method or communication method candidates for setting a call for location measurement to a target terminal based on the information, and determining a frequency band and frequency band candidates can

In this case, the determining may determine a communication method or communication method candidates and frequency band or frequency band candidates jointly supported by the target terminal, the mobile communication network, and the signal measuring apparatus.

In addition, terms such as "system", "processor", "controller", "component", "module", "interface", "model", "unit", etc. generally refer to computer-related entities hardware, combinations of hardware and software; may mean software or software in execution. For example, the aforementioned component may be, but is not limited to, a process run by a processor, a processor, a controller, a controlling processor, an object, a thread of execution, a program, and/or a computer. For example, both an application running on a controller or processor and a controller or processor can be a component. One or more components may reside within a process and/or thread of execution, and components may be located on one system or distributed across two or more systems.

The standard contents or standard documents mentioned in the above-described embodiment are omitted to simplify the description of the specification and constitute a part of the present specification. Accordingly, it should be construed as falling within the scope of the present invention to add the contents of the above standard content and some of the standard documents to the present specification or to be described in the claims.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

CROSS-REFERENCE TO RELATED APPLICATIONCROSS-REFERENCE TO RELATED APPLICATION

This patent application is based on U.S. Patent Law 119 for Patent Application No. 10-2020-0113142, filed in Korea on September 04, 2020 and Patent Application No. 10-2021-0117959, filed in Korea on September 03, 2021 Priority is claimed under section (a) (35 USC § 119(a)), the entire contents of which are incorporated herein by reference. In addition, if this patent application claims priority for countries other than the United States for the same reason as above, all contents thereof are incorporated into this patent application by reference.

Claims

communication department; and

A communication method that controls the communication unit and enables a call setup between a target terminal that is a location measurement target and a mobile communication network to which the target terminal is connected, and a communication method supported by a signal measuring device that measures information on a frequency band and a signal of the target terminal and a control unit for determining a communication method or communication method candidates and frequency band or frequency band candidates to be used for location measurement of the target terminal based on the information on the frequency band and transmitting the determined content to the mobile communication network location measurement server.
The method of claim 1,

Information on a communication method and frequency band capable of establishing a call between the target terminal and the mobile communication network to which the target terminal is connected,

A location measurement server including information on a communication method and a frequency band supported by the target terminal and a mobile communication network connected to the target terminal, respectively.
The method of claim 1,

Information on the communication method and frequency band supported by the mobile communication network,

A location measurement server stored in advance or received from the mobile communication network.
The method of claim 1,

Information on the communication method and frequency band supported by the target terminal,

A location measurement server received from the mobile communication network or included in a location measurement request for the target terminal.
The method of claim 1,

Information on the communication method and frequency band supported by the signal measuring device is,

A position measuring server received from the signal measuring device.
The method of claim 1,

The control unit is

Determining a communication method and frequency band to be used for location measurement of the target terminal, determining communication method and frequency band candidates to be used for location measurement of the target terminal, or communication method candidates to be used for location measurement of the target terminal; A localization server that determines frequency band candidates.
The method of claim 1,

The control unit is

A location measurement server that determines a communication method supported by all of the target terminal, the signal measuring device, and the mobile communication network as a communication method to be used for location measurement of the target terminal.
8. The method of claim 7,

The control unit is

When there are a plurality of communication methods supported by all of the target terminal, the signal measuring device, and the mobile communication network, a location measurement server that determines a communication method with the widest bandwidth to be used as a communication method to use for location measurement of the target terminal.
The method of claim 1,

The control unit is

A location measurement server for determining a frequency band supported by all of the target terminal, the signal measuring device, and the mobile communication network as a frequency band to be used for location measurement of the target terminal.
10. The method of claim 9,

The control unit is

When there are a plurality of frequency bands supported by all of the target terminal, the signal measuring device, and the mobile communication network, the lowest frequency band or the frequency band with the best performance when measuring the signal by the signal measuring device is measured for the position of the target terminal A location measurement server that determines the frequency band to be used for
The method of claim 1,

The control unit is

Transmits the determined content and the call setup request to the mobile communication network, receives call setup information including parameter information used in call setup according to the call setup request, and transmits the received call setup information to the signal measuring device A location measurement server that transmits.
According to claim 1,

The control unit is

A location measurement server for transmitting identification information on a target terminal to the mobile communication network, and receiving information on a communication method and frequency band supported by a terminal corresponding to the identification information searched for in the mobile communication network.
communication department; and

At least one signal measuring device for controlling the communication unit and measuring a signal of a target terminal as a location measurement target acquires information about a communication method and a frequency band supported by a communication method and a communication method supported by all of the at least one signal measuring device A location measurement server comprising a control unit for transmitting information about a frequency band to a mobile communication network.
14. The method of claim 13,

The control unit is

A location measurement server for transmitting information about the communication method and frequency band to a mobile communication network together with a call setup request to the target terminal.
communication department; and

Based on the information on the communication method and frequency band supported by each of the target terminal that controls the communication unit, the target terminal that is the location measurement target, the signal measurement device that measures the signal of the target terminal and the mobile communication network to which the target terminal is connected, the target A mobile communication network comprising: a controller for determining a communication method or communication method candidates and frequency bands or frequency band candidates to be used for location measurement of a terminal, and transmitting the determined content to a location measurement server.
16. The method of claim 15,

The control unit is

Mobile communication for determining a communication method and frequency band to be used for location measurement of the target terminal, setting a call to the target terminal according to the determination, and transmitting information about the call setup to a location measurement server or a signal measurement device network.
In the method of measuring the position of a terminal based on the measurement of the signal measuring device performed by the position measuring server,

Information on a communication method and frequency band in which a call can be set up between a target terminal that is a target terminal for location measurement and a mobile communication network to which the target terminal is connected, and information on a communication method and frequency band supported by a signal measuring device for measuring a signal of the target terminal obtaining a;

determining a communication method or communication method candidates and frequency band or frequency band candidates to be used for location measurement of the target terminal based on the supportable communication method and frequency band information; and

and transmitting a call establishment request including the determined content to the mobile communication network.
18. The method of claim 17,

Information on a communication method and frequency band capable of establishing a call between the target terminal and the mobile communication network to which the target terminal is connected,

A method comprising the target terminal and information on a communication method and a frequency band supported by the mobile communication network to which the target terminal is connected, respectively.
19. The method of claim 18,

The determining step is

A method of determining a communication method supported by all of the target terminal, the signal measuring device, and the mobile communication network as a communication method to be used for location measurement of the target terminal.
20. The method of claim 19,

The determining step is

When there are a plurality of communication methods supported by all of the target terminal, the signal measuring device, and the mobile communication network, a communication method having the widest bandwidth used is a communication method to be used for location measurement of the target terminal.
19. The method of claim 18,

The determining step is

A method of determining a frequency band supported by all of the target terminal, the signal measuring device, and the mobile communication network as a frequency band to be used for location measurement of the target terminal.
22. The method of claim 21,

The determining step is

When there are a plurality of frequency bands supported by all of the target terminal, the signal measuring device, and the mobile communication network, the lowest frequency band or the frequency band in which the signal measuring performance of the signal measuring device is the best is used to measure the location of the target terminal How to decide which frequency band to use for
Communication method or communication method candidates to be used for position measurement of the target terminal and the target terminal, which is the target terminal, and information about a frequency band capable of establishing a call between the target terminal and the mobile communication network to which the target terminal is connected are transmitted to the location measurement server Receives a call setup request including information on a frequency band and frequency band candidates from a location measurement server, performs call setup for the target terminal based on the information included in the call setup request, and performs call setup A mobile communication network comprising a core network entity for transmitting call setup information including used parameter information to the location measurement server.
24. The method of claim 23,

The core network entity,

When information on communication method candidates or frequency band candidates to be used for location measurement of the target terminal is included in the call setup request, among the communication method candidates or frequency band candidates, a communication method to be used for location measurement of the target terminal; A mobile communication network that determines the frequency band.
A communication method supported by all at least one signal measuring device that acquires information about a communication method and frequency band supported by each of the target terminal as the target terminal for location measurement and the mobile communication network to which the target terminal is connected, and measures the signal of the target terminal Acquire information about a frequency band and frequency band, perform call setup for the target terminal based on the obtained information and information included in a call setup request, and call setup information including parameter information used in call setup A mobile communication network including a core network entity that transmits a location measurement server.
In the method of measuring the position of the terminal based on the measurement of the signal measuring device,

acquiring information on a communication method and frequency band capable of establishing a call between a target terminal, which is a location measurement target, and a mobile communication network to which the target terminal is connected;

acquiring information on a communication method and a frequency band supported by a target terminal that is a location measurement target and a mobile communication network to which the target terminal is connected;

obtaining information about a communication method and a frequency band supported by one or more signal measuring apparatuses for measuring a signal of a target terminal; and

and determining, based on the information, a communication method or communication method candidates for setting up a call for location measurement with respect to the target terminal, and a frequency band and frequency band candidates.
27. The method of claim 26,

The determining step is

A method of determining a communication method or communication method candidates jointly supported by the target terminal, the mobile communication network, and the signal measuring apparatus and a frequency band or frequency band candidates.