KR102212867B1 - Device and method for measuring signal, and server and method for measuring location of terminal - Google Patents

Abstract

The present embodiments relate to a method and apparatus for obtaining location information of a terminal using a mobile communication system, and a method and apparatus for obtaining location and movement information even when the terminal changes a call setting or performs a handover. Provides. Specifically, the apparatus for receiving control information of the present disclosure includes at least one downlink signal receiving unit for receiving a downlink signal from a base station, a control unit for obtaining control information for a terminal from a downlink signal, and a location for control information for the terminal. It includes a communication unit that transmits to the server.

Description

Control information receiving device and method, signal measuring device and location measuring server and method {DEVICE AND METHOD FOR MEASURING SIGNAL, AND SERVER AND METHOD FOR MEASURING LOCATION OF TERMINAL}

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

The structure of a terminal in a mobile communication system is shown in FIG. 1. Referring to FIG. 1, in general, a terminal includes an antenna 130, a downlink (DL) signal receiver 110, and an uplink (UL, uplink) signal transmitter 120.

In addition, FIG. 2 shows the structure of a base station in a mobile communication system. Referring to FIG. 2, the base station includes an antenna 230, an uplink signal receiver 210, and a downlink signal transmitter 220.

When the communication device having the structure as shown in FIG. 1 or 2 is used, it is difficult to obtain traffic information including the location of another terminal at an intersection or a specific area. As an example, the communication equipment having the structure of FIG. 1 has a problem that it cannot acquire information of a signal transmitted by another terminal, that is, an uplink signal at all.

In addition, the communication equipment having the structure of FIG. 2 can acquire some data transmitted by other terminals, but there is a problem that it is difficult to obtain information transmitted by the base station.

If this is a method for acquiring the location and movement information of other terminals with a communication device having the structure of FIG. 2, a method of acquiring information of a terminal located in the service radius of the repeater or small cell by installing multiple repeaters or small cells You can consider

However, if the repeater or small cell equipment can be installed only by communication service providers, and the communication service provider does not want it or judges that the business is low, it is a situation that is practically impossible to realize.

Meanwhile, in recent years, there have been attempts by a third party, not a communication service provider, to acquire the location or movement information of a terminal existing in a specific area for public service. As an example, public organizations of the Korea Road Corporation and the National Police Agency attempted to obtain information such as the number or speed of terminals passing through a specific area.

In this situation, it is a reality that there is no way for a third party other than a communication service provider to obtain location or traffic information of a terminal existing in a specific area for the purpose of public service. In particular, there is a limitation that the method of obtaining such information must be performed without affecting the existing communication equipment and communication network.

In addition, there is a need for new additional services, smart cities, and smart buildings based on the location and mobility information of terminals.

The present disclosure is to provide an apparatus and method for obtaining downlink control information, determining an uplink signal based on the downlink control information, and measuring the location of another terminal. It provides an apparatus and method for acquiring movement information of a terminal using two or more signal measuring devices.

In addition, the present disclosure is to provide an apparatus and method for obtaining uplink resource allocation information in a multi-band environment, determining an uplink signal based on this, and measuring the location of another terminal.

An embodiment devised to solve the above-described problem is one or more downlink signal receivers for receiving a downlink signal from a base station, a control unit for obtaining control information for a terminal from a downlink signal, and control information for the terminal. It provides a control information receiving device including a communication unit for transmitting the location measurement server.

In addition, another embodiment includes at least one downlink signal receiving unit for receiving a downlink signal, a controller for acquiring uplink resource allocation information, and at least one uplink signal receiving an uplink signal based on uplink resource allocation information. Including a signal receiving unit, the control unit provides a signal measuring apparatus, characterized in that the operating frequency is changed over time.

In another embodiment, a communication unit for receiving identification information of a terminal and uplink reception information transmitted by the terminal from one or more signal measuring devices, and receiving control information about the terminal from the control information receiving device, and identification information of the terminal, It provides a location measurement server including a control unit that calculates the location and movement information of the terminal based on the uplink reception information transmitted by the terminal and control information on the terminal.

In another embodiment, a signal measurement comprising receiving a downlink signal from a base station, acquiring control information about a terminal from a downlink signal, and transmitting control information about the terminal to a location measurement server Provides a way.

In another embodiment, the steps of receiving identifier information of the terminal and uplink reception information transmitted by the terminal from one or more signal measuring devices, receiving control information about the terminal from the control information receiving device, and the identifier of the terminal It provides a location measurement method including the step of calculating the location and movement information of the terminal based on information, uplink reception information transmitted by the terminal, and control information for the terminal.

Through the present embodiment, it is possible to provide an apparatus and method capable of acquiring presence or absence of a terminal, location and movement information, etc. without affecting an existing communication network. In addition, even when the terminal performs handover, it is possible to secure location and movement information. Furthermore, according to the embodiment of the present invention, information such as the location of adjacent terminals in various bands can be obtained without significantly increasing hardware complexity.

1 is a diagram showing the configuration of a terminal.
2 is a diagram showing the configuration of a base station.
3 is a diagram illustrating a configuration of a signal measuring apparatus according to an embodiment of the present disclosure.
4 is a diagram illustrating a configuration of a signal measuring apparatus according to another embodiment of the present disclosure.
5 is a diagram illustrating a configuration of a signal measuring apparatus according to another embodiment of the present disclosure.
6 is a diagram illustrating a configuration of a signal measuring apparatus according to an embodiment of the present disclosure.
7 is a diagram illustrating a process of changing a frequency by a signal measuring apparatus according to an embodiment of the present disclosure.
8 is a diagram illustrating a flow chart of changing a frequency by a signal measuring apparatus according to an embodiment of the present disclosure.
9 is a diagram illustrating a flowchart of a signal measurement apparatus according to an embodiment of the present disclosure receiving an uplink signal.
10 is a diagram illustrating a flowchart of a signal measuring apparatus according to an embodiment of the present disclosure detecting whether a terminal exists based on an uplink signal.
11 is a diagram illustrating a signal measurement system according to an embodiment of the present disclosure.
12 is a diagram illustrating a signal measurement system according to another embodiment of the present disclosure.
13 is a diagram illustrating a signal measurement system according to another embodiment of the present disclosure.
14 is a diagram illustrating a signal measurement system according to another embodiment of the present disclosure.
15 is a diagram illustrating a configuration of a location measurement server according to an embodiment of the present disclosure.
16 is a diagram illustrating a configuration of a signal measuring apparatus according to an embodiment of the present disclosure.
17 is a diagram for describing a process in which a plurality of signal measuring apparatuses according to an embodiment of the present disclosure operate by synchronizing frequencies.
18 is a diagram illustrating a handover area of a mobile communication system.
19 is a diagram illustrating a process of acquiring movement information of a terminal using different bands in a signal measurement system according to an embodiment of the present disclosure.
20 is a flowchart illustrating a method of receiving control information according to an embodiment of the present disclosure.
21 is a diagram illustrating a flowchart of a method for measuring a location according to an embodiment of the present disclosure.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible even if they are indicated on 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 subject matter of the present invention, a detailed description thereof will be omitted.

In the present specification, a wireless communication system refers to a system for providing various communication services such as voice and packet data. The wireless communication system includes a user equipment (UE) and a base station (BS).

A user terminal is a generic concept that refers to a terminal in wireless communication, as well as UE (User Equipment) in WCDMA, LTE, HSPA, and IMT-2020 (5G or New Radio), as well as MS (Mobile Station) and UT in GSM. It should be interpreted as a concept that includes all of (User Terminal), SS (Subscriber Station), and wireless device.

A base station or cell generally refers to a station that communicates with a user terminal, and Node-B (Node-B), evolved Node-B (eNB), gNB (gNode-B), LPN (Low Power Node) ), Sector, Site, various types of antennas, BTS (Base Transceiver System), Access Point, Points (e.g., Transmit Point, Receiving Point, Transceiver Point), Relay Node ( Relay Node), mega cell, macro cell, micro cell, pico cell, femto cell, RRH (Remote Radio Head), RU (Radio Unit), small cell, etc.

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, the device itself may provide a mega cell, a macro cell, a micro cell, a pico cell, a femto cell, and a small cell, or 2) the radio area itself may be indicated. In 1), all devices that are controlled by the same entity that provide a predetermined wireless area are controlled by the same entity, or all devices that interact to form a wireless area in collaboration are instructed to the base station. Points, transmission/reception points, transmission points, reception points, etc. are an embodiment of the base station according to the configuration method of the wireless area. In 2), it is possible to instruct the base station to the radio region itself that receives or transmits a signal from the viewpoint of the user terminal or the viewpoint of a neighboring base station.

In the present specification, a cell refers to a component carrier having coverage of a signal transmitted from a transmission/reception point or a coverage of a signal transmitted from a transmission/reception point, and the transmission/reception point itself. I can.

In the present specification, the user terminal and the base station are two (Uplink or Downlink) transmission/reception subjects used to implement the technology or technical idea described in the present invention, and are used in a comprehensive sense, and are not limited by a specific term or word. Does not.

Here, the uplink (Uplink, UL, or uplink) refers to a method of transmitting and receiving data to the base station by the user terminal, and the downlink (Downlink, DL, or downlink) is transmitting and receiving data to the user terminal by the base station. It means the way to do it.

For uplink transmission and downlink transmission, a Time Division Duplex (TDD) scheme transmitted using different times may be used, and a frequency division duplex (FDD) scheme transmitted using different frequencies, a TDD scheme and an FDD scheme Mixed use methods can be used.

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

In the uplink and downlink, control information is transmitted through a control channel such as Physical Downlink Control CHannel (PDCCH), Physical Uplink Control CHannel (PUCCH), etc., and physical downlink shared channel (PDSCH), physical uplink shared channel (PUSCH) It is configured with the same data channel to transmit data.

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

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 that transmits 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. Can transmit a control channel. Hereinafter, transmission and reception of signals through each channel will be described in the form of transmission and reception of the corresponding channel.

There are no restrictions on the multiple access scheme 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 techniques 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 invention is used in resource allocation in asynchronous wireless communication evolving to LTE/LTE-Advanced, IMT-2020 through GSM, WCDMA, HSPA, and synchronous wireless communication field evolving to CDMA, CDMA-2000 and UMB. Can be applied.

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

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

As representative usage scenarios in New Radio (NR), which is currently being discussed in 3GPP, eMBB (enhanced mobile broadband), mMTC (massive machine type communication), and URLLC (Ultra Reliable and Low Latency Communication) have been proposed.

In this 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) Can be interpreted as a meaning used in the past or present, or in various meanings used in the future.

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

In this embodiment, a new type of device is proposed that includes a downlink signal receiving unit and an uplink signal receiving unit. The proposed apparatus may include one or more uplink signal receivers, and one or more uplink signal receivers may be installed at different physical locations.

The apparatus described in this embodiment may analyze a downlink signal transmitted by the base station to obtain information on which signal is to be transmitted from the terminal to the base station through the uplink. In addition, it is possible to determine whether the uplink data is transmitted from the terminal to the base station through the uplink signal receiving unit, and determine the location of the corresponding terminal.

A related field of the present embodiments is 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 where the future application of the embodiments is expected, it can be applied in various road control, traffic control, and security related fields.

The prior art that is most related to the present embodiments is the mobile communication system that is most related.

In a system including two or more devices for measuring location information of a terminal according to the present embodiments, the location information measuring device includes at least one downlink signal receiving unit, at least one uplink signal receiving unit, a downlink signal receiving unit, and an uplink It includes a control unit for controlling a signal receiving unit, wherein the control unit obtains uplink resource allocation information, and can determine whether to receive an uplink signal based on the uplink resource allocation information, and from two or more location measuring devices. Based on the measured information, the mobility information of the terminal can be measured.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Further, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary depending on the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout this specification.

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

3 is a diagram illustrating a configuration of a signal measuring apparatus according to an embodiment of the present disclosure. Referring to FIG. 3, the apparatus proposed in this embodiment may include a downlink signal receiving unit 310, an uplink signal receiving unit 320, and an antenna 340. Therefore, unlike the devices described in FIGS. 1 and 2, the apparatus proposed in this embodiment can receive both uplink and downlink signals.

In the structure of FIG. 3, both downlink and uplink signals are received through one antenna. In addition, the communication device may control the uplink signal receiving unit 320 and the downlink signal receiving unit 310 to interlock through the control unit 330.

3 illustrates an embodiment in which the uplink signal receiving unit 320 and the downlink signal receiving unit 310 use the same antenna, but the uplink signal receiving antenna and the downlink signal receiving antenna may be separated.

4 is a diagram illustrating a configuration of a signal measuring apparatus according to another embodiment of the present disclosure.

Referring to FIG. 4, the signal measuring apparatus of FIG. 4 further includes a downlink signal receiving unit 410, an uplink signal receiving unit 420, and a control unit 430, as well as a communication unit 440 capable of communicating with the outside. Are doing. In the present invention, the communication unit 440 is connected to the location measurement server, so that the signal measurement device proposed in the present invention can provide information to the location measurement server. In addition, it is possible to receive control information of the location measurement server and information related to resource allocation to other terminals. In addition, the signal measuring apparatus of FIG. 4 may further include a GPS receiver 470 capable of obtaining location and time information. This makes it possible to secure time synchronization between several signal measuring devices, measure a signal of one terminal in several signal measuring devices, and more accurately measure the location of the terminal based on this. In addition, the signal measuring apparatus of FIG. 4 may further include an input unit 460 and a display unit 460 through which a user can input/output integrated control information and other information.

5 is a diagram illustrating a configuration of a signal measuring apparatus according to another embodiment of the present disclosure.

Referring to FIG. 5, the signal measuring apparatus of FIG. 5 may include one downlink signal receiver 510 and one or more uplink signal receivers 520, 530, and 540. A DL antenna 511 is connected to the downlink signal receiving unit 510, each of the uplink signal receiving units is connected to a first UL signal receiving unit 520, a first UL antenna 521, and a second uplink signal receiving unit ( A second UL antenna 531 may be connected to 530, and a third UL antenna 541 may be connected to the third uplink signal receiver 540. In addition, as in FIGS. 3 and 4, the controller 550 may control the downlink signal receiving unit 510 and each of the uplink signal receiving units 520, 530, and 540 to interlock.

The downlink signal receiving unit 510 of the signal measuring apparatus may be installed in a position near the base station to receive downlink well.

In addition, each of the one or more uplink signal receiving units 520, 530, and 540 may attempt to receive an uplink signal transmitted to the base station by a terminal to be positioned at the position of each uplink signal receiving unit. At this time, each of the uplink signal receivers is connected to the control unit and may operate in conjunction with the downlink signal received by the downlink signal receiver.

In the present invention, an embodiment in which each downlink signal receiving unit and an uplink signal receiving unit are connected by wire is illustrated. However, some or all of the connections may be connected using another radio link. In this case, the connection between the respective receivers and the control unit may communicate using a frequency different from the frequency used by the receivers of the present invention.

Meanwhile, in FIG. 5, a case where one downlink signal reception unit and a plurality of uplink signal reception units are described is described, but a case where there are also a plurality of downlink signal reception units is possible, and in this case, each downlink signal reception unit is installed at different locations. Can be. In addition, the downlink receiver and the uplink receiver may be installed in a 1:1 correspondence. In this case, uplink resource allocation information is obtained through corresponding downlink receivers, and using this, the uplink receiver receives the uplink signal transmitted by the terminal. In another embodiment, the downlink receiver and the uplink receiver may be implemented to be many-to-one or one-to-many, respectively.

6 is a diagram illustrating a configuration of a signal measuring apparatus according to an embodiment of the present disclosure.

6, the signal measuring apparatus of the present disclosure includes a downlink signal receiving unit 610, a downlink frequency oscillating unit 630, an uplink signal receiving unit 620, an uplink frequency oscillating unit 640, and a control unit 650. Includes.

In the embodiment of FIG. 6, the downlink signal receiving unit 610 and the uplink signal receiving unit 620 are respectively connected to an antenna. In the apparatus having the structure of FIG. 6, antennas used for the uplink signal receiver 620 and the downlink signal receiver 610 may be different from each other. That is, the DL antenna may be connected to the downlink signal receiver 610 and the UL antenna may be connected to the uplink signal receiver 620. However, by sharing one antenna, both the uplink signal receiver and the uplink signal receiver can receive signals.

In the embodiment of FIG. 6, the downlink signal receiver 610 receives a downlink signal, and the control unit 650 processes the downlink signal to obtain resource allocation information for a corresponding frequency. The resource allocation information used at this time includes RNTI information of the LTE system, uplink resource information, and information on modulation and coding schemes. In the embodiment of FIG. 6, the downlink signal receiving unit 610 receives commercial uplink resource allocation information.

The control unit 650 sets the resource allocation of the uplink signal receiving unit 620 based on the information and attempts to receive an uplink signal. When an uplink signal is received and the signal is equal to or greater than a predetermined threshold or demodulation/decoding is successfully performed, it is determined that there is a terminal of the RNTI. In addition, the approximate distance from the apparatus of the present invention may be calculated based on information such as the uplink time delay and the received signal strength, direction, and time delay.

The control unit 650 may change the operating frequency of the signal measuring device over time. Specifically, the control unit 650 may collect frequency information of several bands by changing frequencies through the downlink frequency oscillator 630 and the uplink frequency oscillator 630 every predetermined time.

In one embodiment, at least one downlink signal receiver 610 receives a downlink signal at a first downlink frequency during a first time period, and the control unit 650 receives a downlink signal at a first downlink frequency. Acquires uplink resource allocation information, and the one or more uplink signal receivers 620 uplink based on the uplink resource allocation information at a first uplink frequency corresponding to the first downlink frequency during a first time period. Can receive signals.

And after the first time interval has elapsed, the at least one downlink signal receiver 610 receives a downlink signal at a second downlink frequency different from the first downlink frequency during a second time interval after the first time interval, And, the control unit 650 obtains uplink resource allocation information from the downlink signal at the second downlink frequency, and the one or more uplink signal receivers 620, during a second time interval after the first time interval. An uplink signal may be received at a second uplink frequency corresponding to a second downlink frequency based on the uplink resource allocation information.

Accordingly, the apparatus of the present disclosure may collect information on a terminal using frequencies of several bands. In this case, the controller 650 may acquire information such as a band at which a signal of the terminal is detected, an RNTI of the terminal at which it is detected, a detected time, a signal strength, and a time delay, and record the information in the storage device.

The controller 650 may set the downlink frequency and the uplink frequency to have a corresponding relationship in the FDD system. That is, when one terminal of the mobile communication system uses the first frequency for the downlink, the uplink uses the second frequency spaced apart from the first frequency by a predetermined interval. The control unit 650 may set the uplink frequency oscillator 630 and the downlink frequency oscillator 640 so that the frequency is set according to this predetermined relationship. For example, if f1 is used as the uplink frequency in the FDD mobile communication system, the downlink frequency is f1 + Δf. It is common to set uplink and downlink frequencies to have such a constant frequency interval. Through this setting, the UL resource allocation information corresponding to the downlink signal receiver becomes information of a desired uplink frequency band.

7 is a diagram illustrating a process of changing a frequency by a signal measuring apparatus according to an embodiment of the present disclosure. A process of configuring an uplink frequency oscillator and a downlink frequency oscillator by the apparatus of the present disclosure will be described. In the embodiment of FIG. 7, the apparatus of the present disclosure attempts to collect information on a terminal using three bands. In this case, a frequency is set in each frequency band for a certain period of time to collect information of a terminal in each band. When this time elapses, the uplink frequency is changed to another band, and information of the neighboring terminal is collected. At the same time, the downlink frequency is also changed to correspond to the uplink frequency. The information collected in this process includes a temporary ID in the base station such as the RNTI of the terminal, the presence or absence of the terminal, the strength of the received signal, the time delay, and the time when the signal of the corresponding terminal is detected.

In the embodiment of FIG. 7, the apparatus of the present disclosure collects information on neighboring terminals for a predetermined time T1 at the first frequency f1. After that, it moves to the second frequency f2, which is another frequency, collects information of the neighboring terminal for a predetermined time T2, and then moves to the third frequency f3, which is another frequency. At the third frequency f3, information of neighboring terminals is collected for a predetermined period of time T3. In this way, it is possible to operate the apparatus of the present invention for different times in different frequency bands according to the frequency band.

The apparatus of the present disclosure obtains system information by scanning a frequency band used by a mobile communication system when the power is turned on. The above process searches for a synchronization channel transmitted by the base station while changing the frequency. When a synchronization channel is searched, information on a system of the searched base station is received. In the case of LTE, dynamic system information transmitted from the BCH and PDSCH corresponds to this system information. System information thus obtained is stored in a storage device for each frequency band. The reason for storing the system information in this way is to obtain faster information on neighboring terminals by using the stored system information when the frequency is used again later. In addition, since system information may be set differently for each operator and frequency band, it is necessary to store the information for each frequency band. In this initial system information acquisition process, frequency information and system information of a band to be scanned by the apparatus of the present disclosure are acquired.

After securing the system information in this way, the apparatus of the present disclosure collects information of neighboring terminals for each band. When the system information is initially secured and then moved to a new frequency, the apparatus of the present disclosure collects information of a neighboring terminal using information of a corresponding band from the stored system information.

In one frequency band, the apparatus of the present invention receives uplink resource allocation information based on system information. The above process may be performed using a downlink signal receiver of the apparatus of the present disclosure. When uplink resource allocation information is received, it is checked whether there is signal transmission in the uplink resource. The uplink resource allocation information required for the above process may include information such as an RNTI of a terminal, a frequency resource, a modulation of a transmitted signal, and an encoding format. Based on the uplink resource allocation information, information on the location of the terminal may be obtained based on the existence of the terminal of the RNTI, a time delay, and the strength of a received signal. Information of the searched frequency band is stored together with information such as RNTI of the searched terminal, signal strength, time delay, and detection time. The stored information can be used not only by the device of the present disclosure for various purposes, but also by transmitting it to neighboring devices. Although it has been described that the resource allocation information for uplink is received through a downlink receiver in the embodiment of the present invention, it may be received from a mobile communication network through a communication channel. In addition, it is possible to install another downlink receiver around the base station and receive it through a communication channel in this receiver. The communication channel can be implemented by wire or wireless.

At the same time, system information transmitted by the base station in each frequency band is received. Since the base station can change the system configuration as necessary, it is necessary to receive system information and continuously update it. The updated system information is stored for each frequency band, and the time consumption required in the process of receiving system information from the beginning is reduced by utilizing the information when the frequency is next visited again.

8 is a diagram illustrating a flow chart of changing a frequency by a signal measuring apparatus according to an embodiment of the present disclosure.

Referring to FIG. 8, the apparatus of the present invention sets the operating frequency to a new frequency (S801). In addition, information of neighboring terminals for the set frequency band is searched. When the apparatus of the present invention starts searching for a set frequency band, it first checks whether the frequency band is the first visit (S802). In the case of the first visit and the subsequent visit, the time for collecting information in the corresponding frequency band may be set differently. In the embodiment of FIG. 8, in the case of the first visit, operation at the corresponding frequency during the time T0, and in the case of not the first visit to the corresponding frequency band, that is, in the case of the subsequent visit, at the corresponding frequency during the time T1. It works. The reason for setting the time differently is that it takes time to collect system information in the case of the first visit, so the apparatus of the present disclosure is operated at a corresponding frequency for a longer time in consideration of this. In the embodiment of FIG. 8, it was shown that in the case of system information due to an initial visit, a longer period of time remains at a corresponding frequency. However, even when the system information needs to be re-received due to a system information change in the middle, the present invention provides a longer period of time. The device can be operated at that frequency.

If the frequency band in which the apparatus of the present disclosure operates is the first visit, system information on the frequency band is acquired (S803). For example, system information may be obtained by receiving a forward (downlink) channel. In the case of the LTE system, system information is obtained by receiving dynamic system information transmitted through the BCH and PDSCH. If the system information is acquired, it is stored in a storage device and information of the adjacent terminal for the frequency band is collected (S804). Specifically, the apparatus of the present disclosure receives uplink resource allocation information for a corresponding frequency band. After receiving the uplink resource allocation information by collecting information about the adjacent terminal, the terminal's signal transmission for the uplink signal is detected (S805). In this process, the presence or absence of an uplink signal, time delay, and reception strength can be measured. In the above process, the reception of uplink resource allocation information may be performed by receiving a downlink signal of a mobile communication system. Then, it is determined whether the time of T0 set for the corresponding frequency band has elapsed (S806). If the time of T0 set for the corresponding frequency band has not elapsed, uplink resource allocation information is obtained and uplink signal transmission is detected. When the time T0 set for the corresponding frequency band has elapsed, the frequency at which the apparatus of the present disclosure operates is set as a new frequency (S801).

If the device of the present invention revisits the operating band, system information recorded in the storage device is read, and information on the adjacent terminal is first collected according to the system information (S807). Specifically, the apparatus of the present disclosure receives uplink resource allocation information for a corresponding frequency band. After receiving the uplink resource allocation information by collecting information about the neighboring terminal, the terminal's signal transmission for the uplink signal is detected (S808). Then, it is determined whether the time of T1 set for the corresponding frequency band has elapsed (S809). If the time of T1 set for the corresponding frequency band has not elapsed, uplink resource allocation information is obtained and uplink signal transmission is detected. When the time T1 set for the corresponding frequency band has elapsed, the frequency at which the apparatus of the present disclosure operates is set as a new frequency (S801).

If it is found that the system information has changed in the process of collecting information about the adjacent terminal, the system information is received, the system information is stored, and the operation of the apparatus of the present invention is reconfigured according to the system information. If a change in system information is detected, information of a neighboring terminal may be received at a corresponding frequency for a time longer than the time T1 set in FIG. 8.

The signal measuring apparatus of the present disclosure may receive a forward signal, that is, a downlink signal, and determine which control information is transmitted from the base station to the terminal. In particular, the signal measurement apparatus of the present disclosure receives control information connected to a Radio Network Temporary Identifier (RNTI) through a downlink signal receiver, and whether or not to transmit an uplink signal, that is, an uplink signal by the UE based on the above-described control information. It can be determined whether to transmit to the base station.

RNTI is used as a temporary ID of a terminal in a base station, and anonymity can be maintained because it is not known which RNTI is allocated to a terminal. In the present invention, the RNTI has been described based on a method for identifying a terminal, but the present invention reveals that an ID temporarily allocated to a terminal within one base station or cell can be used with the same function.

That is, the apparatus of the present disclosure may receive control information associated with a specific RNTI in order to measure only location information of a terminal identified as a specific RNTI, instead of measuring location information for a certain terminal. If RNTI is used as the identification information of the terminal, there is an advantage that it is possible to specify the terminal to measure location information at a specific time without leaking the terminal user's personal information (e.g. phone number/name/resident registration number).

The present invention proposes a method of acquiring terminal information including presence and location of a terminal based on RNTI information. In the present invention, in order to receive control information including uplink resource allocation transmitted through downlink, it is necessary to perform reception and decoding on a downlink channel. In the present invention, a method for receiving downlink control information will be described.

The first possible method is to demodulate and decode a plurality of unspecified RNTIs. That is, since it is not known which RNTI is allocated, demodulation and decoding of all possible control information is performed. In the LTE system, a candidate for a location to which control information can be transmitted is determined for each terminal. Each terminal receives control information through blind search for the candidates. That is, in the case of receiving control information for a plurality of unspecified RNTIs in the present invention, the reception is performed for all possibilities in which control information can be transmitted to terminals in the cell. In this process, the apparatus of the present invention may select one of control information received through downlink with high reliability, and extract received RNTI information and other control information from the received control information with high reliability.

As described above, when it is attempted to receive all possible control information for a plurality of unspecified RNTIs, the complexity of the apparatus of the present invention may increase. To reduce this, demodulation and decoding may be performed only on some of the possible candidates for control information.

In addition, the apparatus of the present invention may receive downlink control information for only some RNTIs. That is, a limited RNTI candidate is determined in advance and downlink control information is attempted to be received therefrom. That is, one or more candidates for RNTI are selected in advance and forward control information is attempted to be received therefrom.

In the above process, various methods of selecting an RNTI candidate for attempting to receive downlink control information are possible. First, the base station can inform the apparatus of the present invention. In addition, other methods can be externally input to this device or advertised through other communication channels. In addition, information can be collected only for limited RNTIs by promising candidates for this RNTI in advance. For example, RNTIs may be pre-allocated to specific types of terminals, and downlink control information may be received for them. In this case, the information of the RNTI used by the specific terminals may be shared with the base station in advance or transmitted from the base station to operate. Through such a method, it is possible to reduce the complexity or improve the reliability of receiving downlink control information by attempting to receive control information for some without attempting to receive downlink control information for all RNTIs.

Based on this, the apparatus of the present disclosure may obtain information on when and through which resource the uplink is transmitted. The apparatus of the present disclosure attempts to receive an uplink signal transmitted from the terminal to the base station based on the thus obtained uplink resource allocation information, and determines whether to transmit an uplink signal based on the result of the uplink signal reception attempt. Can be judged. In this case, such a determination may be performed by the control unit 550.

If it is detected through the uplink signal receiver that the data for the corresponding uplink signal is transmitted from the terminal to the base station for a time period or frequency resource in which an uplink signal is transmitted in the control information, the apparatus of the present disclosure May determine that there is a terminal to measure the location at a location adjacent to the uplink signal receiver. In addition, the apparatus of the present disclosure may obtain information on various terminals including presence, location, and mobility of the corresponding terminal based on this.

9 is a diagram illustrating a flowchart of a signal measurement apparatus according to an embodiment of the present disclosure receiving an uplink signal.

9 illustrates an operation of a communication device based on an LTE system as an example of a mobile communication system. The LTE system operates based on a TTI of 1 ms, and forward control information may be transmitted from the base station to the terminal at every TTI. Meanwhile, the following procedure may be performed in a mobile communication system other than the LTE system.

First, the apparatus of the present disclosure may receive control information transmitted from the base station to the terminal (S910).

The UE may demodulate and decode a downlink signal for each TTI. In this case, the downlink signal that the UE receives from the base station may be a control channel (PDCCH) or a data channel (PDSCH). That is, in LTE, control information is generally transmitted through the PDCCH, but when control information is transmitted through the PDSCH, the PDSCH may be received. In this case, the apparatus of the present disclosure may first receive the downlink PDCCH and then attempt to receive the PDSCH on which the control information is received.

The apparatus of the present disclosure may receive a forward signal, that is, a downlink signal transmitted from a base station to a terminal, and then check when and through which resource an uplink is transmitted, and what is the RNTI of the terminal at that time.

It is possible to determine whether there is an uplink signal transmission for each uplink signal receiving unit for the uplink resource identified in this way (S920). This process may include determining whether there is a terminal transmitting an uplink through control information transmitted through a downlink and an RNTI of the terminal. That is, when each downlink signal receiver obtains uplink resource allocation information and determines that there is an uplink signal transmission, the uplink signal transmitted to the base station through the corresponding uplink resource is collected, and the collected uplink signal is Based on this, it is possible to determine whether to transmit an uplink signal. In the above process, the acquisition of uplink resource allocation information may be performed by receiving the PDCCH, which is control information transmitted through downlink.

If it is determined that there is an uplink signal transmission (S920-Y), at least one uplink signal receiver included in the apparatus of the present disclosure collects an uplink signal for each uplink signal receiver and attempts to receive an uplink signal. It can be done (S930).

In addition, the apparatus of the present disclosure may determine whether to transmit an uplink signal for each uplink signal receiving unit (S940).

On the other hand, when it is determined that there is no uplink signal transmission (S920-N), a separate uplink signal collection operation is not performed, and the next control information is received.

The above-described operation may be continuously performed every TTI. In addition, the apparatus of the present disclosure can determine the presence, location, and mobility information of the terminal based on whether the uplink signal is transmitted or not determined through the signal collected by each uplink signal receiving unit.

The above-described process may be performed based on the information of the RNTI of the terminal. That is, the apparatus of the present disclosure may determine whether or not an uplink signal transmitted from a terminal having a specific RNTI is transmitted, and determine the presence, location, and mobility information of a terminal having a specific RNTI.

10 is a diagram illustrating a flowchart of a signal measuring apparatus according to an embodiment of the present disclosure detecting whether a terminal exists based on an uplink signal.

Referring to FIG. 10, first, the apparatus of the present disclosure may acquire uplink transmission information from a downlink reception signal obtained through a downlink signal receiver. In addition, the apparatus of the present disclosure may collect an uplink signal transmitted from the terminal to the base station through the resources allocated to the uplink, based on the acquired uplink transmission information, and calculate the average reception power of the collected signal. (S1010).

The apparatus of the present disclosure may compare the calculated average received power value with a pre-calculated or set threshold (S1020). As a result of the comparison, if the average received power value is greater than the threshold value (S1020-Y), since the uplink signal has been received, it may be determined that the terminal to be measured location exists nearby (S1040). On the other hand, when the average received power value is less than the threshold value (S1020-N), since the uplink signal has not been received, it may be determined that the terminal to be measured does not exist nearby (S1030).

In the above procedure, when calculating an uplink reception power value, the power of a reference signal, which is a pilot signal transmitted on an uplink PUCCH or PUSCH, may be used. As another method, power of a data signal transmitted on an uplink PUCCH or PUSCH may be used. In addition, the presence or absence of the terminal and location information may be determined by combining the power values of the reference signal and the data signal. In another embodiment, the presence or absence of a terminal may be determined through the success or failure of demodulation and decoding of an uplink PUSCH channel.

In the present disclosure, as an apparatus including a downlink signal receiving unit and one or more uplink signal receiving units, the downlink signal receiving unit receives control information to obtain uplink resource allocation information, and based on this, the uplink transmitted by the terminal to the base station. A device for determining the existence of a terminal and location information by determining the existence of a link signal is proposed.

Based on this, the apparatus of the present disclosure may obtain the presence or absence of a terminal for which the location information is to be determined, location, and mobility information. And this process can be performed without affecting the existing communication network at all.

The apparatus of the present disclosure aims to measure mobility information of a terminal. Mobility refers to obtaining information such as communication information, moving speed of the terminal, and route based on measuring the time the terminal has moved while moving two or more locations. In the above process, movement information may be obtained using a single signal measuring device, but it may be more efficient to acquire movement information of a terminal using a plurality of signal measuring devices.

11 is a diagram illustrating a signal measurement system according to an embodiment of the present disclosure. The signal measurement system of FIG. 11 may include a base station, a terminal, a signal measurement apparatus of the present disclosure, and a location measurement server.

The signal measuring device 1 1140 and the signal measuring device 2 1150 shown in the signal measuring system of FIG. 11 may be located at different positions. In FIG. 11, movement information of a terminal may be obtained using a plurality of signal measuring devices. For example, it is assumed that the distance between the two signal measuring devices 1140 and 1150 is d. If a terminal having a certain RNTI moves from the position of the signal measuring device 1 1140 to the position of the signal measuring device 2 1150 during time T1, information that the time T1 is required to move between the two sections can be obtained. As another example, if a terminal is located between the two signal measuring devices 1140 and 1150, the two signal measuring devices 1140 and 1150 may measure an uplink signal transmitted by the terminal. In this case, the location of the terminal may be measured based on the measurement results of two or more signal measuring devices, and movement information of the terminal 1120 may be obtained based on this. Here, each of the signal measurement devices 1140 and 1150 transmits the measurement result of the uplink signal of the terminal to the location measurement server 1130, and the location measurement server 1130 is based on the measurement result of the uplink signal of the received terminal. You can measure the location of the terminal. At this time, each of the signal measurement devices 1140 and 1150 transmits information including RNTI information of the measured terminal, location information including the distance between the terminal and the signal measurement devices 1140 and 1150 and measurement time, etc. ).

If the UE performs handover in the above process, the RNTI used in the previous cell and the RNTI used after the handover may be different. In this case, the location measurement server 1130 receives RNTI information from different cells. In this case, it is difficult to determine whether the two pieces of information are measurement information for the same terminal or measurement information for different terminals.

In addition, even within one cell, the RNTI of the UE may be changed for reasons such as a request from the UE and efficient operation of the system. In addition, when the signal measurement apparatus of the present invention performs measurement based on the uplink PUCCH, when the base station changes the setting of the PUCCH, it may be difficult for the signal measurement apparatus of the present invention to grasp this.

In the present disclosure, information on the terminal is changed due to changes in RNTI and uplink transmission parameters of the base station or handover of the terminal, so whether the signal measuring apparatus of the present disclosure performs measurement on the same terminal or measurement on a different terminal. It is intended to provide a method for enabling the measurement of mobility of a terminal in a case where it is difficult to determine whether or not. In particular, RNTI and transmission parameters in a cell before handover and in a cell after handover during handover may be different. In this case, the determination of whether the terminal is the same or a different terminal becomes very important in determining mobility. Accordingly, the present disclosure intends to provide an apparatus for determining the identity of a terminal when information about a terminal is changed. In the present disclosure, a handover situation is considered. However, it should be noted that the contents of the present disclosure can be applied equally to the case where the base station changes the RNTI or transmission parameter within the same cell.

The first possible method is to analyze signals transmitted and received by the terminal of FIG. 11. In particular, the signal measuring apparatus of the present disclosure may analyze a pattern of a downlink signal transmitted to the target terminal 1120 to measure a location, and analyze a pattern of an uplink signal transmitted by the target terminal 1120. When analyzing the uplink signal, not only the PUCCH transmitted by the target terminal 1120 but also the transmission period of the PUSCH, the format transmitted to the PUCCH, the frequency transmitted by the PUSCH, and the amount of data can be used comprehensively. Also, a pattern of a downlink signal transmitted to the target terminal 1120 may be analyzed. Based on this, it is determined whether the terminal measured by the signal measuring device 1 (1140) and the terminal measured by the signal measuring device 2 (1150) are the same terminal or a different terminal. If it is determined that the terminal measured by the signal measuring device 1 (1140) and the terminal measured by the signal measuring device 2 (1150) are the same terminal, the movement distance and time of the target terminal 1120 measured by the two signal measuring devices are determined. You can measure the time it takes to move between two points.

However, in many cases, there may be multiple terminals that receive similar services from a mobile communication network. For example, there may be several terminals making a voice call. Therefore, it may be difficult to determine whether the terminal is the same or a different terminal only by analyzing the data pattern of the uplink/downlink. Therefore, when a terminal performs a handover, it is very important to acquire parameter information used by the terminal after handover, including an RNTI for this.

12 is a diagram illustrating a signal measurement system according to another embodiment of the present disclosure. The signal measurement system of FIG. 12 may include a base station, a terminal, a signal measurement apparatus of the present disclosure, a control information reception apparatus, and a location measurement server.

The apparatus for receiving control information of the present disclosure transmits at least one downlink signal receiving unit for receiving a downlink signal from a base station, a control unit for acquiring control information for a terminal from a downlink signal, and control information for the terminal to a location measurement server. It includes a communication unit. Here, the control information for the terminal includes at least one of call setting information of the terminal, parameter information used by the terminal, and handover control information. For a description of the configuration and configuration of the control information receiving apparatus of the present disclosure, reference may be made to the configuration and description of the signal measuring apparatus.

Referring to FIG. 12, a control information receiving apparatus 1160 for receiving call setting change and handover information is installed near the base station 1110. When the base station 1110 establishes a new call, changes a parameter of a set call, or instructs a handover, it wirelessly transmits a message to the terminal through downlink. A control information receiving apparatus 1160 for receiving the message may be installed near the base station to obtain this information. In an embodiment, the control information receiving apparatus 1160 may be installed such that the reception power or the reception signal-to-noise ratio of a specific downlink channel received from the base station is equal to or greater than a first threshold. Specifically, the control information receiving device 1160 receives and locates a control message such as setting a new call, changing major parameters of a call, and an instruction of handover without receiving user data among signals transmitted through downlink. It serves to transmit to the measurement server 1130.

The reason why the control information receiving apparatus 1160 is installed within the first distance from the base station is to ensure that the downlink reception performance is higher than a certain level. The purpose of this is to install at a point where the reception power or SNR of a specific channel transmitted from the base station is greater than or equal to the first threshold. A pilot or reference signal transmitted from the base station through the specific channel may be used. Alternatively, a synchronization signal transmitted in downlink, a broadcast channel (BCH), or the like may be used.

The information on the call setting change and handover can be obtained by receiving the PDSCH in the LTE system. In the above process, information on a process of handover by a terminal having a specific RNTI is obtained. Therefore, it is possible to obtain handover information without infringing on the privacy of the terminal. This information is transmitted from the base station 1110 to the terminal through the PDSCH, and the apparatus of the present invention receives it to obtain information such as handover. In the above process, the handover information may include not only cell ID, RNTI, and call setup information of the base station before handover, but also cell ID, RNTI, and call setup information of the base station after handover.

Upon receiving the call setting change and handover information, the location measurement server 1130 determines whether measurement data transmitted by the signal measurement devices are transmitted by the same terminal or a different terminal based on this. Based on this, movement information of the terminal determined to be the same terminal is calculated.

13 is a diagram illustrating a signal measurement system according to another embodiment of the present disclosure. Referring to FIG. 13, the signal measuring apparatus includes a function of analyzing a forward channel to change a call setting and receive information on handover. In other words, the function of the signal measuring device may be added to the control information collecting device of FIG. 12 or the function of the control information collecting device may be added to the signal measuring device. A signal measuring apparatus located near some base stations is set to receive the call setting change and handover information. For example, in FIG. 13, the signal measuring apparatus 3 1170 is set to receive control information such as call setting change and handover from the base station. In the above process, the handover information may include not only cell ID, RNTI, and call setup information of the base station before handover, but also cell ID, RNTI, and call setup information of the base station after handover. In addition, the call setting change may include change information of RNTI and change of call setting related parameters. Alternatively, the rest of the signal measuring devices may be set not to perform the above operation. All signal measurement devices measure uplink signals transmitted by terminals and transmit location and mobility information to the location measurement server 1130. This is to add a function to receive information on call setup and handover to some signal measurement devices. The location measurement server 1130 receiving the information determines whether the measurement result is for the same terminal or a different terminal based on this information, and calculates the location and mobility based on this.

Only some of the signal measurement devices of the embodiment of FIG. 13 perform a function of receiving call setup and handover information transmitted by the base station. This can be implemented by additionally installing equipment for acquiring downlink information transmitted by the base station to the above-described signal measuring device, that is, signals transmitted by terminals using the signal measuring device of the embodiment of the signal measuring device of FIG. However, the signal measuring device for receiving the call setting change and handover information may perform its function by adding additional hardware and software. That is, by implementing the signal measuring device in two forms, it can be implemented in two forms that can measure the uplink signal of the terminal, change the call setting transmitted by the base station, and receive control information including handover, in addition to this function. have. The signal measurement apparatus transmits only the measurement result of the uplink signal of the target terminal to the location measurement server 1130. However, another type of signal measurement apparatus transmits not only the result of measuring the uplink signal of the terminal, but also call setting change and handover information to the location measurement server 1130. The above configuration may be implemented by adding a function for receiving and processing call setting change and handover information transmitted from the base station 1110 to the downlink signal receiving unit and the control unit.

14 is a diagram illustrating a signal measurement system according to another embodiment of the present disclosure. This allows the location measurement server 1130 to directly receive information on call setting change and handover from the base station 1110 or the mobile communication network, and know whether the measured data is from the same terminal or from a different terminal. . That is, in the embodiments of FIGS. 12 and 13, the base station 1110 obtains information by installing a separate device for receiving information on call setting change and handover transmitted to the terminal through downlink to obtain information, whereas in FIG. The server 1130 directly receives information on call setting change and handover from the mobile communication network. The information can be transmitted by wire, but it is also possible to transmit wirelessly. That is, the mobile communication network directly delivers the information to the location measurement server of the present invention.

In FIGS. 12 and 13, a control information collection apparatus or a signal measurement apparatus that receives call setting change and handover information transmitted from the base station 1110 generally receives a higher quality downlink than other signal measurement apparatuses. Therefore, it is possible to secure more control information, for example, uplink resource allocation information, with high reliability by acquiring control information for terminals through the control information collecting device or the signal measuring device. The obtained uplink resource allocation information of the terminals can be transmitted to a signal measuring device located in the same cell, and based on this, each signal measuring device can measure the uplink signal of the terminal. As another method, the uplink resource allocation information of the terminals obtained by each signal measurement apparatus may be transmitted to the location measurement server, and the location measurement server may transmit all or part of this information to each signal measurement apparatus. Devices that receive the uplink resource allocation information from other devices try to detect an uplink signal for the terminal based on the received uplink resource allocation information, and based on this, they can determine the presence or absence of the terminal and location information. have. In addition, the devices receiving the uplink resource allocation information from other devices separately combine the uplink resource allocation information obtained by receiving a downlink signal and the resource allocation information received from the other device, and Signal detection may be performed, and the presence and location information of the terminal may be determined based on this.

15 is a diagram illustrating a configuration of a location measurement server according to an embodiment of the present disclosure.

The location measurement server includes a control unit 1520 that obtains control information about the terminal and determines identifier information of the terminal based on the control information about the terminal. In addition, it may include a communication unit 1510 for transmitting the identifier information of the terminal to one or more signal measuring devices. Here, the control information for the terminal includes at least one of call setting information of the terminal, setting and change information of a parameter used by the terminal, and handover control information. In the present invention, the identifier of the terminal may use an arbitrary identifier such as RNTI, which guarantees the privacy of a terminal that does not know what terminal it is.

In an embodiment, the location measurement server may further include a receiving unit 1530 for receiving a signal including control information for the terminal from the signal measurement device. In this case, the controller 1520 may obtain control information for the terminal from the signal received by the receiver.

In another embodiment, the location measurement server may further include a receiving unit 1530 for receiving a signal including control information for the terminal from the base station. In this case, the controller 1520 may obtain control information for the terminal by using a signal received from the base station.

In an embodiment, the communication unit 1510 of the location measurement server may receive information on an uplink signal received by each of the one or more signal measurement devices from one or more signal measurement devices. Here, the information on the uplink signal may include at least one of identifier information of a terminal transmitting an uplink signal, signal strength information of an uplink signal, and time information at which the uplink signal is received.

When the communication unit 1510 receives measurement information on the uplink signal of the terminal from the signal measurement device, the control unit 1520 provides the location information and movement information of the terminal based on the control information on the terminal and the information on the uplink signal. You can decide. In addition, the communication unit 1510 of the location measurement server may transmit the determined location information and movement information of the terminal to one or more signal measurement devices.

Referring to FIG. 15, the location measurement server may have one or more communication units 1510 that perform communication with several signal measurement devices. Uplink signal measurement information of the terminal may be received from several signal measurement devices through the communication unit 1510. In addition, the location measurement server may transmit a command to control each signal measurement device.

Furthermore, the location measurement server may include a receiving unit 1530 for receiving information on call setting change and handover. Here, the communication unit for performing communication with the signal measuring device and the receiving unit for receiving information on call setting change and handover are shown as separate configurations, but the communication unit and the receiving unit may be integrated into one module. The location measurement server includes a function of receiving call setting and handover information of terminals from the apparatus for collecting call setting and handover information of the mobile communication system described in FIGS. 12, 13 and 14. In addition, the control unit of the location measurement server may analyze the location and movement information of each terminal using this information.

16 is a diagram illustrating a configuration of a signal measuring apparatus according to an embodiment of the present disclosure. The apparatus of FIG. 16 includes several downlink signal receivers S1610 and uplink signal receivers S1620 to simultaneously measure uplink signals of terminals in several frequency bands. That is, each of the downlink signal receiver and the uplink signal receiver may be configured to receive a signal for one frequency band.

For a description of the control unit 1630, the communication unit 1640, the input unit 1650, the display unit 1660, and the GPS receiving unit 1670 included in the device of Fig. 16, the control unit 430 and the communication unit 440 described in Fig. 4 , The description of the input unit 450, the display unit 460, and the GPS receiver 470 may be referred to.

It is possible to configure and use a network by installing a plurality of devices of the present invention in various locations. In this case, each device can be set to operate at the same frequency. Specifically, the control unit of the signal measuring device synchronizes time information and operating frequency with one or more neighboring signal measuring devices located within a second distance from the corresponding signal measuring device, and with the one or more neighboring signal measuring devices according to the passage of time. In the same way, the operating frequency can be changed.

This setting is shown in the embodiment of Fig. 17. Referring to the embodiment of FIG. 17, it can be seen that two signal measuring devices, a first device and a second device, operate at the same frequency at the same time. Also, even when the operating frequency is changed, it can be seen that both devices change to the same frequency at the same time. The embodiment of FIG. 17 is illustrated based on an uplink frequency. However, the apparatuses of the present invention can set the downlink frequency to the same time at the same time. In addition, although the embodiment of FIG. 17 illustrates an embodiment in which two devices simultaneously change frequencies, two or more devices may synchronize and change frequencies.

In order to operate at the same frequency at the same time as in the embodiment of FIG. 17, time synchronization may be required for the devices of the present invention. In order to synchronize time, the devices of the present invention may use external devices such as GPS. In addition, synchronization can be performed based on the time transmitted from the mobile communication base station.

In the embodiment of FIG. 17, in a method of causing several devices to operate at the same frequency at the same time, a time for each device to change a frequency and a frequency to be changed may be predetermined, and the frequency may be shifted in one pattern. Also, as another method, one of the devices of the present invention may instruct other devices to change the frequency. In addition, it is possible to instruct the devices of the present invention to change the frequency by providing an external control device for controlling various devices of the present invention.

In the case of FIGS. 12 to 14, in order to measure the location of a terminal and acquire mobility information, it is necessary to acquire call setting change and handover information from a mobile communication network. However, it may be difficult or add a lot of cost to obtain the information.

The present invention also proposes a method of obtaining information on a location and mobility of a terminal when it is difficult to obtain information on a call setting change and handover from a mobile communication network.

18 is a diagram showing a handover area of a mobile communication system. When there is a first base station and a second base station, the terminal performs handover while moving. An area that performs handover is called a handover area. In the case of performing handover, the transmission configuration including the RNTI used in the previous cell may be changed in the new cell. Therefore, it becomes difficult to determine whether the measurement result of the signal measurement device is for the same terminal or for another terminal.

19 shows a method for measuring the location and mobility of terminals proposed in the present invention. Referring to FIG. 19, it is assumed that a signal measuring apparatus having the structure of FIG. 16 capable of receiving mobile communication signals of various frequency bands. As shown in FIG. 16, the frequency of each signal measuring device is set to receive signals from terminals of different operators. Here, the frequency of different operators is characterized in that the locations of the base stations are different. As shown in FIG. 19, it can be seen that the positions of the base stations are arranged differently at different frequencies. If the location of the base station is different in this way, the handover area is different. By using this feature, mobile information of the terminal is obtained. As shown in FIG. 19, by using the signal measuring device 1 and the signal measuring device 2, it is possible to grasp the movement information of the terminal of the second frequency between them. In addition, by using the signal measuring device 2 and the signal measuring device 3, movement information of a terminal having a first frequency between them can be grasped. If mobile information of terminals is acquired at different frequencies used by different operators, mobile information that is difficult to grasp when collecting only one frequency can be complemented to obtain more mobile information. In the embodiment of FIG. 19, by synthesizing movement information of different frequencies as described above, the overall movement information of the terminal is identified.

20 is a diagram illustrating a flowchart of a signal measuring method according to an embodiment of the present disclosure.

Referring to FIG. 20, a method for measuring a signal according to an embodiment of the present disclosure includes a downlink signal reception step (S2010) of receiving a downlink signal from a base station, and control information for acquiring control information for a terminal from the downlink signal. It includes an acquisition step (S2020) and a control information transmission step (S2030) of transmitting control information for the terminal to the location measurement server. Here, the control information for the terminal may include at least one of call setting information of the terminal, parameter information used by the terminal, and handover control information.

In an embodiment, the signal measuring apparatus may determine information about the terminal by receiving an uplink signal from the terminal as well as acquiring control information. Specifically, the signal measurement apparatus acquires uplink resource allocation information for the terminal, receives the uplink signal of the terminal based on the uplink resource allocation information by using the uplink signal receiver, and uplink signal based on the uplink signal. A step of determining information on a terminal that has transmitted a link signal may be performed. Here, the information on the terminal may include location information of the terminal. Furthermore, the signal measurement apparatus may obtain uplink resource allocation information by receiving and processing the downlink signal.

In addition, the signal measurement apparatus receives a downlink signal at a first downlink frequency during a first time period, obtains uplink resource allocation information from a downlink signal at a first downlink frequency, and performs the An uplink signal may be received based on the uplink resource allocation information at a first uplink frequency corresponding to a first downlink frequency.

And after the first time interval has elapsed, the signal measuring apparatus receives a downlink signal at a second downlink frequency different from the first downlink frequency during a second time interval after the first time interval, and the second downlink frequency Obtains uplink resource allocation information from a downlink signal in, and based on the uplink resource allocation information at a second uplink frequency corresponding to the second downlink frequency during a second time interval after the first time interval It is possible to receive an uplink signal.

At this time, the signal measuring device synchronizes time information and operating frequency with one or more neighboring signal measuring devices located within a second distance from the signal measuring device, and adjusts the operating frequency in the same manner as the one or more neighboring signal measuring devices according to the passage of time. You can change it.

21 is a diagram illustrating a flowchart of a method for measuring a location according to an embodiment of the present disclosure.

Referring to FIG. 21, in the method of measuring a location according to an embodiment of the present disclosure, a terminal information determination step (S2110) of obtaining control information on a terminal and determining identifier information of a terminal based on the control information on the terminal, and And a terminal information transmission step (S2120) of transmitting the identification information of the terminal to one or more signal measuring devices. Here, the control information for the terminal may include at least one of call setting information of the terminal, parameter information used by the terminal, and handover control information.

In an embodiment, the location measurement server may receive a signal including control information about the terminal from the signal measurement device. In another embodiment, the location measurement server may receive a signal including control information for the terminal directly from the base station. In this case, the location measurement server may obtain control information for the terminal from the signal received by the receiver.

Furthermore, the location measurement server may receive information on an uplink signal received by each of the at least one signal measurement apparatus from at least one signal measurement apparatus. Here, the information on the uplink signal may include at least one of identifier information of a terminal transmitting an uplink signal, signal strength information of an uplink signal, and time information at which the uplink signal is received. In addition, the location measurement server may determine location information and movement information of the terminal based on control information about the terminal and information about the uplink signal. In addition, the location measurement server may transmit location information and movement information of the terminal to one or more signal measurement devices.

For specific embodiments of the method of measuring a signal and a method of measuring a position of the present disclosure, the description of FIGS. 3 to 19 may be referred to.

In addition, terms such as "system", "processor", "controller", "component", "module", "interface", "model", and "unit" generally refer to computer-related entity hardware, a combination of hardware and software, It can mean software or running software. For example, the above-described components may be, but are not limited to, a process driven by a processor, a processor, a controller, a control processor, an object, an execution thread, a program, and/or a computer. For example, an application running on a controller or processor and a controller or processor can both be components. One or more components may reside within a process and/or thread of execution, and a component may reside on one system or may be deployed on more than one system.

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

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

Claims (21)

One or more downlink signal receivers configured to receive downlink signals configured for one or more terminals from a base station;
A control unit for obtaining control information for the terminal from the downlink signal; And
Communication unit for transmitting control information on the terminal to a location measurement server or a signal measurement device
Control information receiving device comprising a.
The method of claim 1,
Control information for the terminal,
And at least one of call setting information of the terminal, parameter information used by the terminal, and handover control information.
The method of claim 1,
The control information receiving device,
The control information receiving apparatus, characterized in that it is installed so that the reception power or the reception signal-to-noise ratio of a specific downlink channel received from the base station is equal to or greater than a first threshold.
The method of claim 1,
The control unit,
Acquire uplink resource allocation information for the terminal,
The control information receiving device,
One or more uplink signal receivers for receiving an uplink signal of the terminal based on the uplink resource allocation information
Including more,
The control unit,
The apparatus for receiving control information, characterized in that determining information on a terminal that has transmitted the uplink signal based on the uplink signal.
The method of claim 4,
The control unit,
Process the downlink signal to obtain uplink resource allocation information for the terminal.
The method of claim 4,
The control unit,
And determining information on a terminal including location information of a terminal that has transmitted the uplink signal based on the uplink signal.
One or more downlink signal receivers configured to receive downlink signals configured for one or more terminals from a base station;
A control unit for obtaining information on uplink resource allocation allocated to the terminal from the downlink signal; And
Including one or more uplink signal receivers for receiving an uplink signal transmitted by the terminal based on the uplink resource allocation information,
The control unit,
A signal measuring device, characterized in that the operating frequency is changed over time.
The method of claim 7,
The one or more downlink signal receivers,
Receiving a downlink signal at a first downlink frequency during a first time period, receiving a downlink signal at a second downlink frequency different from the first downlink frequency during a second time period after the first time period,
The control unit,
Obtaining uplink resource allocation information from a downlink signal in the first downlink frequency and uplink resource allocation information from a downlink signal in the second downlink frequency,
The one or more uplink signal receivers,
During the first time period, an uplink signal is received at a first uplink frequency corresponding to the first downlink frequency based on the uplink resource allocation information, and the second time period after the first time period. 2 A signal measurement apparatus, characterized in that receiving an uplink signal based on the uplink resource allocation information at a second uplink frequency corresponding to a downlink frequency.
The method of claim 7,
The control unit,
Synchronize time information and operating frequency with one or more neighboring signal measuring devices located within a second distance from the signal measuring device,
It characterized in that the operating frequency is changed in the same manner as the one or more neighboring signal measuring devices over time.
A communication unit configured to receive identification information of a terminal and reception information on an uplink signal transmitted by the terminal from one or more signal measurement devices, and to receive control information on the terminal from the outside; And
And a controller configured to calculate the location and movement information of the terminal based on the identifier information of the terminal, reception information for an uplink signal transmitted from the terminal, and control information on the terminal.
The method of claim 10,
The communication unit,
Position measurement server, characterized in that receiving control information for the terminal from a control information receiving device.
The method of claim 10,
The communication unit,
Position measurement server, characterized in that receiving control information for the terminal from a mobile communication network or a mobile communication base station.
The method of claim 10,
Control information for the terminal,
The location measurement server comprising at least one of call setting information of the terminal, parameter information used by the terminal, and handover control information.
The method of claim 10,
The communication unit,
Receiving a signal including control information for the terminal from the signal receiving device,
The control unit,
Position measurement server, characterized in that obtaining control information for the terminal from the signal received from the communication unit.
The method of claim 10,
The communication unit,
Receiving a signal including control information for the terminal from the base station,
The control unit,
Position measurement server, characterized in that obtaining control information for the terminal from the signal received from the communication unit.
The method of claim 10,
Information on the uplink signal,
A location measurement server comprising at least one of identifier information of a terminal transmitting the uplink signal, signal strength information of an uplink signal, and time information at which an uplink signal is received.
The method of claim 10,
The communication unit,
And transmitting the location information and movement information of the terminal to the at least one signal measurement device.
Receiving a downlink signal configured for one or more terminals from a base station;
Acquiring control information for the terminal from the downlink signal; And
Transmitting control information for the terminal to a location measurement server or a signal measurement device
Control information receiving method comprising a.
The method of claim 18,
Control information for the terminal,
Characterized in that it comprises at least one of call setting information of the terminal, parameter information used by the terminal, and handover control information.
Receiving identifier information of a terminal and reception information of an uplink signal transmitted by the terminal from one or more signal measurement devices;
Receiving control information for the terminal from a control information receiving apparatus, a mobile communication network, or a mobile communication base station;
Calculating the location and movement information of the terminal based on the identifier information of the terminal, reception information for an uplink signal transmitted by the terminal, and control information for the terminal
Position measurement method comprising a.
The method of claim 20,
Control information for the terminal,
It characterized in that it comprises at least one of call setting information of the terminal, parameter information used by the terminal, and handover control information.

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