KR20220127187A - Device and method for measuring signal, and server and method for measuring location of terminal - Google Patents

Abstract

Embodiments of the present invention relate to a method and device for obtaining location information of a terminal using a mobile communication system, and provide a method and device capable of obtaining location and movement information even when a terminal changes call settings or performs handover. Specifically, a device for receiving control information of the present disclosure includes: one or more downlink signal receiving units which receive a downlink signal from a base station; a control unit which obtains control information about a terminal from the downlink signal; and a communication unit which transmits the control information about the terminal to a location measurement server.

Description

Control information receiving device and method, signal measuring device and position measuring server and method

The present embodiments relate to a method and apparatus for acquiring 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 , a terminal generally includes an antenna 130 , a downlink (DL, downlink) signal receiver 110 , and an uplink (UL, uplink) signal transmitter 120 .

And, in FIG. 2, the structure of the base station of the mobile communication system is shown. 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 shown in FIG. 1 or 2 is used, there is a problem in that it is difficult to obtain traffic information including the location of another terminal at an intersection or a specific area. For example, the communication equipment having the structure of FIG. 1 has a problem in that it cannot acquire information on signals transmitted by other terminals, that is, uplink signals.

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

If the communication equipment having the structure of FIG. 2 is a method for acquiring the location and movement information of other terminals, a method of acquiring information of a terminal located in the service radius of the repeater or small cell by installing a plurality of repeaters or small cells can be considered.

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

Meanwhile, in recent years, there have been attempts to obtain the location or movement information of a terminal existing in a specific area by a third party, not a communication service provider, for a public service. As an example of this, public organizations such as the 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, the reality is that there is no method for a third party other than a telecommunication service provider to obtain the location or traffic information of a terminal existing in a specific area for the purpose of public service. In particular, there is a restriction that the method of acquiring such information must be performed without affecting existing communication equipment and communication networks.

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

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

Another object of the present disclosure is to provide an apparatus and method for acquiring 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 includes at least one downlink signal receiver for receiving a downlink signal from a base station, a controller for obtaining control information for the terminal from the downlink signal, and control information for the terminal It provides a control information receiving device including a communication unit for transmitting the position measurement server.

In addition, another embodiment provides at least one downlink signal receiver for receiving a downlink signal, a controller for obtaining uplink resource allocation information, and one or more uplink signals for receiving an uplink signal based on the uplink resource allocation information. It provides a signal measuring device, comprising a signal receiving unit, characterized in that the control unit changes the operating frequency according to the passage of time.

Another embodiment includes a communication unit for receiving identifier information of the terminal and uplink reception information transmitted by the terminal from one or more signal measuring apparatuses, and receiving control information for the terminal from the control information receiving apparatus, identifier information of the terminal; There is provided a location measurement server including a control unit for calculating location and movement information of a terminal based on uplink reception information transmitted by the terminal and control information on the terminal.

Another embodiment is a signal measurement comprising the steps of receiving a downlink signal from a base station, obtaining control information for a terminal from the downlink signal, and transmitting control information for the terminal to a location measurement server provide a way

Another embodiment provides the steps of: receiving identifier information of a terminal and uplink reception information transmitted by the terminal from one or more signal measuring apparatuses; and receiving control information for the terminal from a control information receiving apparatus; There is provided a location measurement method comprising calculating location and movement information of a 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 the 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, location and movement information can be secured. Furthermore, through an embodiment of the present invention, information such as locations of adjacent terminals existing in multiple bands can be acquired without significantly increasing hardware complexity.

1 is a diagram illustrating 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 view for explaining 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 for changing a frequency by a signal measuring apparatus according to an embodiment of the present disclosure.
9 is a diagram illustrating a flow chart for receiving an uplink signal by a signal measuring apparatus according to an embodiment of the present disclosure.
10 is a diagram illustrating a flow chart in which a signal measuring apparatus detects the presence of a terminal based on an uplink signal according to an embodiment of the present disclosure.
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 measuring 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 explaining a process in which a plurality of signal measuring apparatuses operate by synchronizing frequencies according to an embodiment of the present disclosure.
18 is a diagram illustrating a handover area of a mobile communication system.
19 is a diagram for explaining 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 diagram illustrating a flowchart of a method for receiving control information according to an embodiment of the present disclosure.
21 is a diagram illustrating a flowchart of a location measurement method according to an embodiment of the present disclosure.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though 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 gist of the present invention, the 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. A wireless communication system includes a user equipment (UE) and a base station (BS).

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

A base station or cell generally refers to a station that communicates with a user terminal, and includes a Node-B (Node-B), an evolved Node-B (eNB), gNode-B (gNB), and a Low Power Node (LPN). ), sector, site, various types of antennas, base transceiver system (BTS), access point, point (eg, transmission point, reception point, transmission/reception point), relay node ( Relay Node), mega cell, macro cell, micro cell, pico cell, femto cell, RRH (Remote Radio Head), RU (Radio Unit), small cell (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 ways. 1) in relation to the radio area, it may be the device itself providing a mega cell, a macro cell, a micro cell, a pico cell, a femto cell, or a small cell, or 2) may indicate the radio area itself. In 1), the devices providing a predetermined radio area are controlled by the same entity, or all devices interacting to form a radio area cooperatively are directed to the base station. A point, a transmission/reception point, a transmission point, a reception point, etc. become an embodiment of a base station according to a configuration method of a radio area. In 2), the radio area itself in which the signal is received or transmitted from the point of view of the user terminal or the neighboring base station may be indicated to the base station.

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

In this specification, the user terminal and the base station are used in an inclusive sense as two (Uplink or Downlink) transmitting and receiving subjects used to implement the technology or technical idea described in the present invention, and are not limited by the term or word specifically referred to. does not

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

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

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

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

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

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

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

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

There is no limitation on the multiple access 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 schemes such as OFDM-CDMA can be used. Here, NOMA includes Sparse Code Multiple Access (SCMA) and Low Density Spreading (LDS).

One embodiment of the present invention is asynchronous wireless communication that evolves to LTE/LTE-Advanced, IMT-2020 through GSM, WCDMA, HSPA, and synchronous wireless communication that evolves to CDMA, CDMA-2000 and UMB. 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 the present 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 LTE-based MTC-related operations. Alternatively, in this specification, the MTC terminal supports improved coverage compared to the existing LTE coverage, or a UE category/type defined in 3GPP Release-12 or lower that supports low power consumption, or a newly defined Release-13 low cost (or low complexity) UE category/type. Alternatively, it may mean a further Enhanced MTC terminal defined in Release-14.

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

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

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

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

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

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

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

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

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

The prior art with the highest relevance to the present embodiments is a mobile communication system that has the highest relevance.

In a system having two or more devices for measuring location information of a terminal according to the present embodiments, the location information measuring device includes one or more downlink signal receivers, one or more uplink signal receivers and downlink signal receivers, and uplink a control unit for controlling the signal receiving unit, wherein the control unit obtains uplink resource allocation information, and determines whether to receive an uplink signal based on the uplink resource allocation information, Mobility information of the terminal may be measured based on the measured information.

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

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 receiver 310 , an uplink signal receiver 320 , and an antenna 340 . Therefore, the apparatus proposed in this embodiment can receive both uplink and downlink signals, unlike the apparatuses described with reference to FIGS. 1 and 2 .

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 receiver 320 and the downlink signal receiver 310 to interwork through the controller 330 .

Although FIG. 3 shows an embodiment in which the uplink signal receiving unit 320 and the downlink signal receiving unit 310 use the same antenna, it may be implemented by separating the uplink signal receiving antenna and the downlink signal receiving antenna.

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 communication unit 440 capable of communicating with the outside in addition to the downlink signal receiving unit 410 , the uplink signal receiving unit 420 , and the control unit 430 . 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 acquiring location and time information. This ensures time synchronization between several signal measurement devices, measures the signal of one terminal in several signal measurement devices, and allows the location of the terminal to be measured more accurately 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 , 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 uplink signal receiving unit 520 by a first UL antenna 521, and a second uplink signal receiving unit ( A second UL antenna 531 may be connected to the 530 , and a third UL antenna 541 may be connected to the third uplink signal receiver 540 . And, similarly to FIGS. 3 and 4 , the controller 550 may control the downlink signal receiver 510 and each uplink signal receiver 520 , 530 , and 540 to interwork.

The downlink signal receiving unit 510 of the signal measuring device may be installed near the base station at a position where it can receive the downlink well.

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

In the present invention, an embodiment in which each downlink signal receiver and the uplink signal receiver 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 controller may communicate using a frequency different from the frequency used by the receivers of the present invention.

Meanwhile, in FIG. 5 , the case where there is one downlink signal receiver and a plurality of uplink signal receivers has been described. However, a case where there are also a plurality of downlink signal receivers is possible. In this case, each downlink signal receiver is installed at different positions can be In addition, the downlink receiver and the uplink receiver may be installed in a 1:1 correspondence, respectively. In this case, the uplink resource allocation information is obtained through the corresponding downlink receivers, and the uplink receiver receives the uplink signal transmitted by the terminal by using this. 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.

Referring to FIG. 6 , the signal measuring apparatus of the present disclosure includes a downlink signal receiver 610 , a downlink frequency oscillator 630 , an uplink signal receiver 620 , an uplink frequency oscillator 640 , and a controller 650 . includes

In the embodiment of FIG. 6 , the downlink signal receiver 610 and the uplink signal receiver 620 are each connected to an antenna. In the device 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, a DL antenna may be connected to the downlink signal receiver 610 , and a UL antenna may be connected to the uplink signal receiver 620 . However, both the uplink signal receiver and the uplink signal receiver can receive a signal by sharing one antenna.

In the embodiment of FIG. 6 , the downlink signal receiver 610 receives a downlink signal, and the controller 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, resource information of uplink, and information on modulation and coding schemes. In the embodiment of FIG. 6 , the shopping mall uplink resource allocation information is received through the downlink signal receiving unit 610 .

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

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

In an embodiment, the one or more downlink signal receivers 610 receive a downlink signal at a first downlink frequency during a first time interval, and the controller 650 receives the downlink signal at the first downlink frequency from the downlink signal in the first downlink frequency. Acquire uplink resource allocation information, and at least one uplink signal receiver 620 performs an uplink based on the uplink resource allocation information at a first uplink frequency corresponding to the first downlink frequency during a first time interval. signal can be received.

And after the first time period has elapsed, the one or more downlink signal receivers 610 receive a downlink signal at a second downlink frequency different from the first downlink frequency during a second time period after the first time period, 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 the second time interval after the first time interval, An uplink signal may be received based on the uplink resource allocation information at a second uplink frequency corresponding to the second downlink frequency.

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

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

7 is a view for explaining a process of changing a frequency by a signal measuring apparatus according to an embodiment of the present disclosure. A process in which the apparatus of the present disclosure configures an uplink frequency oscillator and a downlink frequency oscillator will be described. In the embodiment of FIG. 7 , the device of the present disclosure intends to collect information on terminals using three bands. In this case, by setting a frequency for a predetermined time in each frequency band, information of the terminal in each band is collected. When this time elapses, the uplink frequency is changed to another band to collect information on the adjacent terminal. 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 at which the signal of the corresponding terminal is detected.

In the embodiment of FIG. 7 , the device of the present disclosure collects information of a neighboring terminal for a predetermined time T1 at a first frequency f1. After that, it moves to the second frequency f2, which is another frequency, collects information of the adjacent terminal for a predetermined time T2, and then moves to the third frequency f3, which is a different frequency. At the third frequency f3, information of the adjacent terminal is collected for a predetermined 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 frequency bands.

When the device of the present disclosure is powered on, it scans the frequency band used by the mobile communication system to acquire system information. In the above process, a synchronization channel transmitted by the base station is searched while the frequency is changed. When the synchronization channel is searched, information on the system of the searched base station is received. In the case of LTE, dynamic system information transmitted from BCH and PDSCH corresponds to such system information. The 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 information of a neighboring terminal faster by using the stored system information when the corresponding frequency is used again later. In addition, since system information may be set differently for each operator and each frequency band, it is necessary to store the system 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 device of the present disclosure are acquired.

After securing the system information in this way, the apparatus of the present disclosure collects information of adjacent terminals for each band. After initially securing system information, when moving to a new frequency, the device of the present disclosure collects information of a neighboring terminal by using information of a corresponding band from 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 the RNTI of the terminal, frequency resources, modulation and encoding format of the transmitted signal, and the like. Based on the uplink resource allocation information, it is possible to obtain information on the location of the terminal based on the existence of the RNTI terminal, a time delay, the strength of a received signal, and the like. Information of the searched frequency band is stored together with information such as the searched terminal's RNTI, signal strength, time delay, and detection time. The stored information may be utilized by the device of the present disclosure for various purposes, and may also be transmitted and utilized by neighboring devices. Although it has been described that the uplink resource allocation information is received through the downlink receiver in the embodiment of the present invention, it may also be received through a communication channel from a mobile communication network. In addition, by installing another downlink receiver around the base station, it is possible to receive the receiver through a communication channel. The communication channel may be implemented by wire or wirelessly.

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 settings as needed, it is necessary to receive system information and continuously update it. The updated system information is stored for each frequency band, and when the frequency is revisited next time, the time consumption required in the process of receiving the system information from the beginning is reduced by using the information.

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

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

If the frequency band in which the device of the present disclosure operates is the first visit, system information for the frequency band is acquired (S803). For example, information of the system may be obtained by receiving a forward (downlink) channel. In the case of an LTE system, system information is obtained by receiving dynamic system information transmitted through BCH and PDSCH. If the system information is acquired, it is stored in a storage device and information of a neighboring terminal for a frequency band is collected (S804). Specifically, the apparatus of the present disclosure receives uplink resource allocation information for a corresponding frequency band. After receiving 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, reception strength, etc. 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 T0 set for the corresponding frequency band has elapsed (S806). When the time of T0 set for the corresponding frequency band has not elapsed, uplink resource allocation information is acquired and uplink signal transmission is detected. When the time T0 set for the corresponding frequency band has elapsed, the frequency at which the device of the present disclosure operates is set as a new frequency (S801).

If the device of the present invention is a revisit to the band in which the device operates, the system information recorded in the storage device is read and information about 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 uplink resource allocation information by collecting information about the adjacent 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). When the time of T1 set for the corresponding frequency band has not elapsed, uplink resource allocation information is acquired to detect uplink signal transmission. When the time T1 set for the corresponding frequency band has elapsed, the frequency at which the device of the present disclosure operates is set as a new frequency (S801).

If it is found that the system information is changed in the process of collecting information on the neighboring terminal, it is received, the system information is stored, and the operation of the apparatus of the present invention is set again according to the system information. If a change in system information is detected, the information of the adjacent terminal may be received at the corresponding frequency for a longer time than the set time T1 of 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 measuring apparatus of the present disclosure receives control information connected to a Radio Network Temporary Identifier (RNTI) through a downlink signal receiving unit to determine whether an uplink signal is transmitted, that is, an uplink signal based on the control information described above by the terminal thereafter. It can be determined whether to transmit to the base station.

The RNTI is used as a temporary ID of a terminal within a base station, and since it is not known which RNTI will be assigned to a terminal, anonymity can be maintained. In the present invention, the RNTI has been described based on a method of identifying a terminal, but the present invention discloses that an ID temporarily assigned 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 by a specific RNTI, instead of measuring location information for an arbitrary terminal. When the RNTI is used as the identification information of the terminal, there is an advantage that the terminal for which the location information is to be measured at a specific point in time can be specified 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 the presence or absence of a terminal and a location based on RNTI information. In the present invention, in order to receive control information including uplink resource allocation transmitted through downlink, reception and decoding of a downlink channel must be performed. A method for receiving downlink control information in the present invention will be described.

First, a possible method is to perform demodulation and decoding on an unspecified number of RNTIs. That is, since it is not known which RNTI is allocated, demodulation and decoding are performed on all possible control information. In the LTE system, candidates for positions where control information can be transmitted are determined for each terminal. Each terminal receives control information through blind search for the candidates. That is, in the present invention, when control information for a plurality of unspecified RNTIs is received, reception is performed for all possibilities of transmitting control information to terminals in the cell. In this process, the device of the present invention may select a high-reliability one from among the control information received through downlink, and extract the received RNTI information and other control information from the received high-reliability control information.

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. In order to reduce this, demodulation and decoding may be performed on only some of the possible control information candidates.

In addition, the device 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 reception is attempted. That is, one or more RNTI candidates are selected in advance and forward control information is attempted to be received.

In the above process, a number of methods are available for selecting an RNTI candidate that will attempt to receive downlink control information. First, the base station may inform the device of the present invention. Also, other methods may be externally input to this device or advertised through other communication channels. In addition, information collection can be performed only for limited RNTIs by promising candidates for this RNTI in advance. For example, RNTIs may be allocated in advance to specific types of terminals, and downlink control information may be received for them based on this. In this case, information of the RNTI used by the specific terminals may be shared with the base station in advance or may be operated by being transmitted from the base station. Through such a method, it is possible to reduce the complexity or improve downlink control information reception reliability by attempting to receive control information for some of the RNTIs without attempting to receive downlink control information for all RNTIs.

Based on this, the device of the present disclosure may acquire information on when and through which resource an uplink is transmitted. The apparatus of the present disclosure attempts to receive an uplink signal transmitted by the terminal to the base station based on the thus obtained allocation information of uplink resources, and determines whether to transmit the uplink signal based on the result of the uplink signal reception attempt. can be judged. At this time, such determination may be performed by the controller 550 .

If it is detected through the uplink signal receiver that data for the corresponding uplink signal is transmitted from the terminal to the base station for a time period or frequency resource indicated in the control information in which the uplink signal is transmitted, the apparatus of the present disclosure may determine that a terminal whose location is to be measured exists in a position adjacent to the uplink signal receiving unit. And the device of the present disclosure may acquire information on various terminals including the existence, location, and mobility of the corresponding terminal based on this.

9 is a diagram illustrating a flow chart for receiving an uplink signal by a signal measuring apparatus according to an embodiment of the present disclosure.

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 same procedure as follows 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 the downlink signal every TTI. In this case, the downlink signal received by the terminal 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 the control information is transmitted through the PDSCH, the PDSCH may be received. In this case, the device of the present disclosure may first receive the downlink PDCCH, and then attempt to receive the PDSCH through 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 later, when and through which resource an uplink is transmitted, and what the RNTI of the terminal is at that time.

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

If it is determined that there is uplink signal transmission (S920-Y), one or more uplink signal receivers included in the apparatus of the present disclosure collect uplink signals for each uplink signal receiver and attempt 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 receiver (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 it waits until the next control information is received.

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

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 whether a terminal having a specific RNTI exists, location, and mobility information.

FIG. 10 is a diagram illustrating a flow chart in which a signal measuring apparatus detects the presence of a terminal based on an uplink signal according to an embodiment of the present disclosure.

Referring to FIG. 10 , first, the apparatus of the present disclosure may obtain uplink transmission information from a downlink reception signal obtained through a downlink signal receiver. And based on the acquired uplink transmission information, the apparatus of the present disclosure may collect an uplink signal transmitted from the terminal to the base station through the resource allocated to the uplink, and calculate the average received 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 value (S1020). As a result of the comparison, if the average received power value is greater than the threshold value (S1020-Y), since an uplink signal has been received, it may be determined that a terminal for which a location is to be measured exists nearby (S1040). On the other hand, when the average received power value is less than the threshold value (S1020-N), since an uplink signal is not received, it may be determined that a terminal for which a location is to be measured does not exist nearby (S1030).

In the above process, when the uplink reception power value is calculated, the power of the reference signal, which is a pilot signal transmitted to the uplink PUCCH or PUSCH, may be used. As another method, the power of the data signal transmitted on the uplink PUCCH or PUSCH may be used. In addition, by combining the power values of the reference signal and the data signal, it is possible to determine the presence or absence of the terminal and location information. In another embodiment, the presence or absence of the UE may be determined through the presence or absence of successful demodulation and decoding of the uplink PUSCH channel.

In the present disclosure, as an apparatus including a downlink signal receiver and one or more uplink signal receivers, the downlink signal receiver receives control information to obtain uplink resource allocation information, and based on this, the terminal transmits the uplink to the base station. An apparatus for determining the existence of a link signal and determining the presence or absence of a terminal and location information is proposed.

Based on this, the device of the present disclosure may acquire presence or absence of a terminal for which 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, movement speed of the terminal, and route based on measuring the time taken by the terminal to move to two or more locations. Although the movement information may be acquired using one signal measuring device in the above process, it may be more efficient to acquire the mobile information of the 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 measuring system of FIG. 11 may include a base station, a terminal, a signal measuring apparatus of the present disclosure, and a location measuring server.

The signal measuring device 1 ( 1140 ) and the signal measuring device 2 ( 1150 ) illustrated 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 the 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, it is possible to obtain information that it takes a time of T1 to move between the two sections. As another example, if the terminal is located between the two signal measurement apparatuses 1140 and 1150 , the two signal measurement apparatuses 1140 and 1150 may measure an uplink signal transmitted by the terminal. In this case, the position 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 acquired based on this. Here, each of the signal measuring apparatuses 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 based on the received measurement result of the uplink signal of the terminal. It is possible to measure the location of the terminal. At this time, each signal measuring device (1140, 1150) is the measured RNTI information of the terminal, location information including the distance between the terminal and the signal measuring device (1140, 1150), and information including the measurement time, the location measurement server 1130 ) can be sent to

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 becomes difficult to determine whether the two pieces of information are measurement information for the same terminal or measurement information for different terminals.

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

In the present disclosure, information on the UE is changed due to a change in the RNTI and uplink transmission parameters of the base station or handover of the UE, so that the signal measuring apparatus of the present disclosure performs measurement on the same UE or measurement on a different UE An object of the present invention is to provide a method for enabling measurement of the mobility of a terminal in a case in which it is difficult to determine whether it is recognized. In particular, during handover, the RNTI and transmission parameters in the cell before the handover and the cell after the 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 the mobility. Accordingly, the present disclosure intends to provide an apparatus for determining the identity of a terminal when information on a terminal is changed. In the present disclosure, a description will be made in consideration of a handover situation. However, it is clear that the content of the present disclosure is equally applicable even when the base station changes the RNTI or transmission parameter within the same cell.

A first possible method is to analyze a signal 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 whose location is to be measured, and may analyze a pattern of an uplink signal transmitted by the target terminal 1120 . When the uplink signal is analyzed, not only the PUCCH transmitted by the target terminal 1120 but also the transmission period of the PUSCH, the format in which the PUCCH is transmitted, the frequency of transmission of the PUSCH, the amount of data, and the like may be comprehensively used. Also, it is possible to analyze a pattern of a downlink signal transmitted to the target terminal 1120 . Based on this, it is determined whether the terminal measured by the signal measuring apparatus 1 1140 and the terminal measured by the signal measuring apparatus 2 1150 are the same terminal or different terminals. If it is determined that the terminal measured by the signal measuring apparatus 1 1140 and the terminal measured by the signal measuring apparatus 2 1150 are the same terminal, based on the movement distance and time of the target terminal 1120 measured by the two signal measuring apparatuses can measure the time it takes to travel between two points.

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

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

The control information receiving apparatus of the present disclosure includes at least one downlink signal receiving unit for receiving a downlink signal from a base station, a control unit obtaining control information for a terminal from the downlink signal, and transmitting control information about the terminal to a location measurement server including a communication unit. Here, the control information for the terminal includes at least one of call setup 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 the description of the signal measuring apparatus.

Referring to FIG. 12 , a control information receiving device 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 the established call, or instructs handover, it wirelessly transmits a message to the terminal through a downlink. The control information receiving apparatus 1160 that receives 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 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 a control message such as setting a new call, changing a main parameter of a call, and an instruction of a handover, without receiving user data, among the signals transmitted through the downlink, and locates it. It serves to transmit to the measurement server 1130 .

The reason why the control information receiving apparatus 1160 is installed within a first distance from the base station is to ensure that the downlink reception performance is above a certain level. The purpose of this is to install it at a point where the received power or SNR of a specific channel transmitted from the base station becomes 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 through downlink, a broadcast channel (BCH), etc. may be used.

The above-described call setup change and handover information 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 acquired. Therefore, it is possible to obtain handover information without infringing on the privacy of the terminal. The base station 1110 transmits this information to the terminal through the PDSCH, and the apparatus of the present invention receives it and obtains information such as handover. In the above process, the handover information may include not only the cell ID, RNTI, and call setup information of the base station before handover, but also the cell ID, RNTI, and call setup information of the base station after handover.

The location measurement server 1130 that has received the call setup change and handover information determines whether the measurement data transmitted by the signal measurement devices are transmitted by the same terminal or by different terminals based on this. Based on this, the movement information of the terminal determined to be the same terminal is calculated.

13 is a diagram illustrating a signal measuring system according to another embodiment of the present disclosure. Referring to FIG. 13 , a function of receiving information on call setting change and handover by analyzing a forward channel in the signal measuring device is included. 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 device located near some base station is set to receive the call setup change and handover information. For example, in FIG. 13 , the signal measuring device 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 the cell ID, RNTI, and call setup information of the base station before handover, but also the cell ID, RNTI, and call setup information of the base station after handover. In addition, the change of call setup may include change of RNTI change information and call setup related parameters. Contrary to this, the other signal measuring devices may be set not to perform the above operation. All signal measuring devices measure uplink signals transmitted by terminals and transmit location and mobility information to the location measuring server 1130 . It is to add a function to receive information on call setup and handover to some signal measuring devices. The location measurement server 1130 that has received the information determines whether the measurement result is for the same terminal or different terminals based on this information, and calculates location and mobility based on this.

Only some signal measuring apparatuses 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 obtaining downlink information transmitted by the base station in the above-described signal measuring device, that is, using the signal measuring device of the embodiment of the signal measuring device of FIG. 4 to measure the signals transmitted by terminals However, the signal measuring device for receiving the call setting change and handover information may perform its functions by adding additional capacity hardware and software. That is, the signal measuring device is implemented in two forms, for measuring the uplink signal of the terminal, and in addition to this function, it can be implemented in two forms that can receive control information including change of call settings and handover transmitted by the base station. have. The signal measuring apparatus transmits only the uplink signal measurement result of the target terminal to the location measurement server 1130 . However, another type of signal measuring apparatus transmits not only an uplink signal measurement result of the terminal but also call setup 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 by 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 call setup change and handover information from the base station 1110 or the mobile communication network and determine whether the data measured based on this is of the same terminal or of a different terminal. . That is, in the embodiment of FIGS. 12 and 13 , the base station 1110 acquires information by installing a separate device for receiving information on call setting change and handover transmitted to the terminal through downlink, whereas in FIG. 14 , location measurement The server 1130 directly receives information of call setting change and handover from the mobile communication network. The information can be transmitted by wire, but it is also possible to transmit it wirelessly. That is, the mobile communication network directly transmits the information to the location measurement server of the present invention.

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

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 for the terminal and determines identifier information of the terminal based on the control information on the terminal. And, 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 parameters used by the terminal, and handover control information. In the present invention, the identifier of the terminal may use an arbitrary identifier that guarantees the privacy of the terminal that does not know what kind of terminal it is, such as RNTI.

In an embodiment, the location measurement server may further include a receiver 1530 for receiving a signal including control information for the terminal from the signal measurement apparatus. 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 using a signal received from the base station.

In an embodiment, the communication unit 1510 of the location measurement server may receive information about an uplink signal received by each of 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 that has transmitted the uplink signal, signal strength information of the uplink signal, and time information at which the uplink signal is received.

When the communication unit 1510 receives the measurement information for the uplink signal of the terminal from the signal measurement apparatus, the controller 1520 receives the location information and movement information of the terminal based on the control information for the terminal and the information on the uplink signal. 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 for communicating with a plurality of signal measurement devices. Through the communication unit 1510, it is possible to receive uplink signal measurement information of the terminal from a plurality of signal measurement devices. In addition, the position measurement server may transmit a command for controlling each signal measurement device.

Furthermore, the location measurement server may include a receiving unit 1530 for receiving call setting change and handover information. Here, the communication unit for communicating with the signal measuring device and the receiving unit for receiving call setting change and handover information are illustrated as separate components, but the communication unit and the receiving unit may be integrally operated as one module. The location measurement server includes a function of receiving call setup and handover information of terminals from the device for collecting call setup and handover information of the mobile communication system described in FIGS. 12, 13 and 14 . In addition, the controller of the location measurement server may analyze the location and movement information of each terminal using such 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 S1620 to simultaneously measure uplink signals of terminals of 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.

The description of the control unit 1630, the communication unit 1640, the input unit 1650, the display unit 1660, and the GPS receiver 1670 included in the device of FIG. 16 includes 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.

A plurality of devices of the present invention may be installed in various locations to configure and use a network. 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 an operating frequency with one or more neighboring signal measuring devices located within a second distance from the corresponding signal measuring device, and with the passage of time, the one or more neighboring signal measuring devices and Similarly, the operating frequency can be changed.

The embodiment of Fig. 17 shows such a setting. 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 time and at the same frequency. 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 the uplink frequency. However, the devices of the present invention can set the same downlink frequency at the same time. In addition, although the embodiment of FIG. 17 shows an embodiment in which two devices simultaneously change frequencies, it is also possible for two or more devices to synchronize and change frequencies.

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

In the embodiment of FIG. 17 , in the method of allowing several devices to operate at the same frequency at the same time, the frequency at which each device changes the frequency and the frequency at which the frequency changes are predetermined, and the frequency can be moved according to one pattern. Also, as another method, one of the devices of the present invention may instruct other devices to change the frequency. In addition, an external control device for controlling various devices of the present invention may be provided to instruct the devices of the present invention to change the frequency.

12 to 14, in order to obtain location measurement and mobility information of a terminal, call setting change and handover information must be obtained from a mobile communication network. However, obtaining this information can be difficult or add a lot of cost.

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

18 is a diagram illustrating a handover area of a mobile communication system. When there is a first base station and a second base station, a handover is performed while the terminal moves. A region in which handover is performed is called a handover region. When handover is performed, 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 result measured by the signal measuring apparatus is for the same terminal or for a different 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 is assumed. As shown in FIG. 16 , the frequency of each signal measuring device is set to receive signals from terminals of different operators. Here, the frequencies of different operators are characterized in that the positions of the base stations are different from each other. As shown in FIG. 19 , it can be seen that the positions of the base stations are arranged differently at different frequencies. In this way, when the location of the base station is different, the handover area is different. This feature is used to obtain the mobile information of the terminal. As shown in FIG. 19 , movement information of a terminal having a second frequency between them can be grasped by using the signal measuring device 1 and the signal measuring device 2 . In addition, by using the signal measuring device 2 and the signal measuring device 3, it is possible to grasp movement information of the terminal of the first frequency between them. If mobile information of terminals is acquired on different frequencies used by other operators, more mobile information can be acquired by complementing mobile information that is difficult to understand when collecting only on one frequency. In the embodiment of FIG. 19, movement information of different frequencies is synthesized as described above to determine overall movement information of the terminal.

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

Referring to FIG. 20 , in a signal measuring method according to an embodiment of the present disclosure, a downlink signal receiving step ( S2010 ) of receiving a downlink signal from a base station, and control information for obtaining 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 setup 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 obtaining control information. Specifically, the signal measuring apparatus obtains uplink resource allocation information for the terminal, receives the uplink signal of the terminal based on the uplink resource allocation information using the uplink signal receiver, and uplinks based on the uplink signal. The step of determining information about the terminal that has transmitted the link signal may be performed. Here, the information about the terminal may include location information of the terminal. Furthermore, the signal measuring apparatus may obtain uplink resource allocation information by receiving a downlink signal and processing it.

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

And after the first time period 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 period after the first time period, and the second downlink frequency to obtain uplink resource allocation information from a downlink signal in An uplink signal may be received.

At this time, the signal measuring device synchronizes time information and an operating frequency with one or more neighboring signal measuring devices located within a second distance from the signal measuring device, and the same operating frequency as the one or more neighboring signal measuring devices over time can be changed

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

Referring to FIG. 21 , the location measurement method according to an embodiment of the present disclosure includes a terminal information determination step (S2110) of obtaining control information for a terminal, and determining identifier information of a terminal based on the control information on the terminal; , and a terminal information transmission step (S2120) of transmitting the identifier information of the terminal to one or more signal measuring apparatuses. Here, the control information for the terminal may include at least one of call setup 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 for 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 about an uplink signal received by each of the one or more signal measurement apparatuses from one or more signal measurement apparatuses. Here, the information on the uplink signal may include at least one of identifier information of a terminal that has transmitted the uplink signal, signal strength information of the uplink signal, and time information at which the uplink signal is received. In addition, the location measurement server may determine the location information and movement information of the terminal based on the control information for the terminal and the information on 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 signal measuring method and the position measuring method of the present disclosure, reference may be made to the description of FIGS. 3 to 19 above.

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

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

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

Claims (1)

a communication unit for receiving control information for the terminal from the control information receiving apparatus;
at least one uplink signal receiver for receiving an uplink signal transmitted from the terminal to a mobile communication network based on control information for the terminal; and
a control unit for controlling the communication unit and the at least one uplink signal receiving unit;
Control information for the terminal,
A signal measuring apparatus, characterized in that it is obtained by the control information receiving apparatus based on a downlink signal transmitted from a mobile communication network to the terminal.

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