WO2020040531A1 - Procédé et dispositif de contrôle d'interférence en liaison montante de dispositif de collecte d'informations de terminal dans un système de communication sans fil - Google Patents

Procédé et dispositif de contrôle d'interférence en liaison montante de dispositif de collecte d'informations de terminal dans un système de communication sans fil Download PDF

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Publication number
WO2020040531A1
WO2020040531A1 PCT/KR2019/010591 KR2019010591W WO2020040531A1 WO 2020040531 A1 WO2020040531 A1 WO 2020040531A1 KR 2019010591 W KR2019010591 W KR 2019010591W WO 2020040531 A1 WO2020040531 A1 WO 2020040531A1
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WIPO (PCT)
Prior art keywords
signal
terminal
information
interference
target terminal
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PCT/KR2019/010591
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English (en)
Korean (ko)
Inventor
문희찬
Original Assignee
한양대학교 산학협력단
주식회사 인포씨즈시스템
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from KR1020190101424A external-priority patent/KR102273913B1/ko
Application filed by 한양대학교 산학협력단, 주식회사 인포씨즈시스템 filed Critical 한양대학교 산학협력단
Priority to EP19852418.3A priority Critical patent/EP3843485A4/fr
Priority to US17/269,297 priority patent/US20210185636A1/en
Priority to CN201980054819.7A priority patent/CN112602364A/zh
Publication of WO2020040531A1 publication Critical patent/WO2020040531A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • the present embodiments relate to a method and an apparatus for obtaining location information of a terminal using a wireless communication system.
  • the reality is that there is no way for a third party other than a telecommunication service provider to acquire the location or traffic information of a terminal existing in a specific area for the purpose of public service.
  • a restriction that the method of acquiring this information should be performed without affecting the existing installed communication equipment and communication network.
  • the present embodiment obtains uplink resource allocation information, determines an uplink signal based on the uplink signal, and provides an apparatus and method for measuring the location of the target terminal. To improve detection and signal measurement accuracy.
  • the communication unit provides a signal measuring device for transmitting at least one of the interference generation information or the interference source information to the base station or the location measurement server.
  • the present disclosure provides a receiver for receiving at least one of interference generation information on an uplink signal of a target terminal or identification information of a terminal having a potential interference source from a signal measuring device or a positioning server and interference generation information or interference source It provides a base station including a control unit that causes interference in the uplink signal of the target terminal or adjusts uplink resource allocation of another terminal that may be an interference source based on the information on the identification information of the terminal having a possibility of.
  • the present disclosure is an information acquisition step of acquiring at least one of an uplink signal of the target terminal or identification information of a terminal that may be an interference source for transmission of the uplink signal, the target terminal based on the uplink signal Generating interference generation information for the uplink signal of the or generating the interference source information including the identification information of the terminal likely to be an interference source and at least one of the interference generation information or interference source information base station or location measurement It provides a signal measuring method comprising a transmission step of transmitting to the server.
  • the present disclosure is a method performed by a base station, receiving at least one of interference generation information on the uplink signal of the target terminal or identification information of the terminal having a potential source of interference from the signal measuring device or the positioning server And adjusting an uplink resource allocation of another terminal that may cause interference in an uplink signal of a target terminal or another terminal that may be an interference source based on the interference occurrence information or information on identification information of a terminal that may be an interference source. It provides an interference control method comprising the step.
  • the present disclosure it is possible to improve the uplink signal detection and measurement performance of the target terminal by reducing the uplink interference by collecting the presence and location information of the terminal without affecting the existing communication network.
  • the user of the apparatus of the present embodiment can freely perform communication in the same manner without affecting the target terminal detection and measurement performance.
  • FIG. 1 is a diagram of a signal meter according to an exemplary embodiment of the present disclosure.
  • FIG. 2 is a diagram illustrating an overall relationship between a signal measuring device, a base station, and a target terminal according to an embodiment of the present disclosure.
  • FIG. 3 is a structural diagram of a signal measuring device according to an embodiment of the present disclosure.
  • FIG. 4 is a structural diagram of a signal measuring device according to another embodiment of the present disclosure.
  • FIG. 5 is a flowchart of a signal measuring method according to an exemplary embodiment of the present disclosure.
  • FIG. 6 is a flowchart illustrating a signal measuring method according to an embodiment of the present disclosure.
  • FIG. 7 is a flowchart illustrating a signal measuring method according to an embodiment of the present disclosure.
  • FIG. 8 is a diagram illustrating a structure of an uplink signal receiver of a signal measuring device according to an embodiment of the present disclosure.
  • FIG. 9 is a flowchart illustrating a signal measuring device measuring an interference source and informing the mobile communication network of measured information according to an embodiment of the present disclosure.
  • FIG. 10 is a flowchart illustrating an operation of a mobile communication base station according to an embodiment of the present disclosure.
  • FIG. 11 is a diagram illustrating an uplink signal reception bandwidth controlled by a signal measurer according to an exemplary embodiment of the present disclosure.
  • FIG. 12 illustrates a configuration of an uplink channel according to an embodiment of the present disclosure.
  • FIG. 13 is a flowchart illustrating an uplink signal reception bandwidth of a signal measurer according to an embodiment of the present disclosure.
  • FIG. 14 is a diagram illustrating a time at which other terminals activated in an embodiment of the present disclosure perform an inter frequency search and a method in which a target terminal transmits an uplink signal.
  • 15 is a diagram illustrating another embodiment of a signal transmission method of a target terminal of the present disclosure.
  • 16 is a diagram illustrating a configuration of a positioning server according to an embodiment of the present disclosure.
  • 17 is a diagram illustrating a configuration of a base station according to an embodiment of the present disclosure.
  • the 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).
  • UE user equipment
  • BS base station
  • a user terminal is a comprehensive concept of a terminal in a wireless communication, and includes a user equipment (UE) in WCDMA, LTE, HSPA, and IMT-2020 (5G or New Radio), as well as a mobile station (MS) and a UT in GSM. It should be interpreted as a concept that includes a user terminal, a subscriber station (SS), and a wireless device.
  • UE user equipment
  • LTE Long Term Evolution
  • HSPA High Speed Packet Access
  • IMT-2020 5G or New Radio
  • a base station or cell generally refers to a station for communicating with a user terminal, and includes a Node-B, an evolved Node-B, an eNB, a gNode-B, and a Low Power Node. ), Sector, site, various types of antenna, base transceiver system (BTS), access point, access point (for example, transmission point, reception point, transmission / reception point), relay node ( It is meant to encompass various coverage areas such as relay nodes, mega cells, macro cells, micro cells, pico cells, femto cells, remote radio heads (RRHs), radio units (RUs), and small cells.
  • BTS base transceiver system
  • RRHs remote radio heads
  • RUs radio units
  • the base station may be interpreted in two meanings. 1) the device providing the mega cell, the macro cell, the micro cell, the pico cell, the femto cell, the small cell in relation to the radio area, or 2) the radio area itself. In 1) all devices that provide a given wireless area are controlled by the same entity or interact with each other to cooperatively configure the wireless area to the base station. According to the configuration of the wireless area, a point, a transmission point, a transmission point, a reception point, and the like become one embodiment of a base station. In 2), the base station may indicate the radio area itself that receives or transmits a signal from a viewpoint of a user terminal or a neighboring base station.
  • a cell refers to a component carrier having coverage of a signal transmitted from a transmission / reception point or a signal transmitted from a transmission point or a transmission / reception point, and the transmission / reception point itself. Can be.
  • a user terminal and a base station are used in a generic sense as two entities (uplink or downlink) transmitting and receiving entities used to implement the technology or technical idea described in the present disclosure, and are not limited by the terms or words specifically referred to. Do not.
  • the uplink (Uplink, UL, or uplink or reverse) refers to a method of transmitting and receiving data to and from the base station by the user terminal
  • the downlink (Downlink, DL, or downlink or forward) refers to the user terminal by the base station. This means a method of transmitting and receiving data.
  • the uplink transmission and the downlink transmission may use a time division duplex (TDD) scheme that is transmitted using different times, and a frequency division duplex (FDD) scheme, a TDD scheme and a FDD scheme, which are transmitted using different frequencies.
  • TDD time division duplex
  • FDD frequency division duplex
  • uplink and downlink are configured based on one carrier or a pair of carriers to configure a standard.
  • the uplink and the downlink transmit control information through a control channel such as a physical downlink control channel (PDCCH), a physical uplink control channel (PUCCH), a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), and the like. It is composed of the same data channel to transmit data.
  • a control channel such as a physical downlink control channel (PDCCH), a physical uplink control channel (PUCCH), a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), and the like. It is composed of the same data channel to transmit data.
  • Downlink may mean a communication or communication path from the multiple transmission and reception points to the terminal
  • uplink may mean a communication or communication path from the terminal to the multiple transmission and reception points.
  • the transmitter in the downlink, the transmitter may be part of multiple transmission / reception points, and the receiver may be part of the terminal.
  • a transmitter in uplink, a transmitter may be part of a terminal, and a receiver may be part of multiple transmission / reception points.
  • a situation in which a signal is transmitted and received through a channel such as a PUCCH, a PUSCH, a PDCCH, and a PDSCH may be described in the form of 'sending and receiving a PUCCH, a PUSCH, a PDCCH, and a PDSCH.
  • high layer signaling described below includes RRC signaling for transmitting RRC information including an RRC parameter.
  • the base station performs downlink transmission to the terminals.
  • the base station transmits downlink control information such as scheduling required for reception of a downlink data channel, which is a main physical channel for unicast transmission, and a physical downlink for transmitting scheduling grant information for transmission on an uplink data channel.
  • the control channel can be transmitted.
  • the transmission and reception of signals through each channel will be described in the form of transmission and reception of the corresponding channel.
  • the base station may transmit resource allocation information to the terminal through the PDCCH, and the base station may also transmit control signals for resource allocation and signal transmission to the terminal through the PDSCH.
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • CDMA Code Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • NOMA Non-Orthogonal Multiple Access
  • OFDM-TDMA OFDM-FDMA
  • SCMA sparse code multiple access
  • LDS low density spreading
  • One embodiment of the present disclosure is directed to resource allocation in the field of asynchronous wireless communication evolving to LTE / LTE-Advanced, IMT-2020 via GSM, WCDMA, HSPA, and synchronous wireless communication evolving to CDMA, CDMA-2000 and UMB. Can be applied.
  • a MTC terminal may mean a terminal supporting low cost (or low complexity) or a terminal supporting coverage enhancement.
  • the MTC terminal may mean a terminal defined in a specific category for supporting low cost (or low complexity) and / or coverage enhancement.
  • the MTC terminal may mean a newly defined 3GPP Release-13 low cost (or low complexity) UE category / type for performing LTE-based MTC related operations.
  • the MTC terminal supports an enhanced coverage compared to the existing LTE coverage, or UE category / type defined in the existing 3GPP Release-12 or lower, or newly defined Release-13 low cost (or supporting low power consumption).
  • low complexity can mean UE category / type.
  • it may mean a further Enhanced MTC terminal defined in Release-14.
  • a NB-IoT (NarrowBand Internet of Things) terminal refers to a terminal that supports radio access for cellular IoT.
  • the objectives of the NB-IoT technology include improved indoor coverage, support for large scale low speed terminals, low sensitivity, low cost terminal cost, low power consumption, and optimized network architecture.
  • NR New Radio
  • eMBB enhanced Mobile BroadBand
  • MMTC Massive Machine Type Communication
  • URLLC Ultra Reliable and Low Latency Communication
  • NR New Radio
  • the main purpose of the signal measuring device considered in the present disclosure is to measure a signal transmitted by the target terminal and to use it to measure the presence or location of the target terminal.
  • the presence or absence of the above means that the target terminal is present near the signal measuring device of the present disclosure. Therefore, the signal measuring device can be expressed by the term position measuring device and the like, and they can be interpreted as the same or similar device.
  • a public organization such as a road construction or a police agency collects information such as the number or speed of terminals passing through a specific area to realize a public service.
  • such an implementation should be performed without causing a problem to the existing communication equipment or communication network, and there is a need for a system for accurately estimating the information of the terminal.
  • a signal measuring device for a target terminal has been proposed in the invention of KR10-2018-0054836.
  • the apparatus includes one or more downlink signal receivers, one or more uplink signal receivers, a controller, configures uplink resource allocation information based on control information received from the downlink signal receiver, and based on uplink resource allocation information.
  • a configuration of determining whether to receive the uplink signal is disclosed.
  • KR10-2018-0046139 proposes a configuration for calculating location information of a specific target terminal using the device.
  • the apparatuses commonly receive downlink signals of a mobile communication system to obtain uplink resource allocation information.
  • the uplink signal is detected based on the uplink resource allocation information to determine whether a target terminal exists in the vicinity of the signal measurer of the present disclosure.
  • the other communication device may act as a large interference source to the signal measuring device, thereby preventing the signal measuring device from detecting the position of the target terminal or reducing the detection performance.
  • the signal measuring device of the present disclosure may be carried by a person or a predetermined moving object to search for the position of the target terminal.
  • the person operating the signal measuring instrument has a high probability of carrying another communication terminal. That is, a person using a signal measuring device is more likely to carry his or her own mobile phone or mobile terminal while measuring the position of the target terminal using the signal measuring device.
  • people using other terminals may be accompanied or present around the searcher.
  • the signal measuring instrument may be greatly interfered with by the signal of the user's mobile phone or mobile terminal. This means that when the position of the target terminal is measured using a plurality of signal measuring instruments, the interference acting on the signal measuring instrument becomes larger.
  • the probability of interference is very high.
  • a target terminal communicates in an LTE manner
  • a mobile phone or a mobile terminal of a person carrying a signal measuring device and a device for measuring a signal of the target terminal may also communicate in an LTE manner.
  • the device of the present disclosure may not operate normally due to the signal of the LTE terminal used by the person having a signal measuring device.
  • the present disclosure obtains uplink resource allocation information of a target terminal, monitors an uplink signal based on the target terminal, and determines that an interference by a signal of a terminal other than the target terminal has occurred in the uplink signal of the target terminal.
  • the present invention proposes a signal measuring device that informs a base station or a location measuring server of interference occurrence information so that the base station can adjust resource allocation of another terminal causing interference.
  • the signal measuring device or the location measuring server transmits the identification information of the terminal which may cause interference to the mobile communication base station, and based on this, the frequency used by the terminal of the identification information and the frequency used by the target terminal are set differently.
  • the identification information may be one of a terminal's telephone number, IMSI, TMSI, or serial number at the time of manufacture. In addition, other types of identification numbers that can designate a terminal can be applied.
  • the terminal having the possibility of interference may be a mobile communication terminal owned by a searcher having a signal measuring instrument or a terminal connected to the signal measuring instrument.
  • the terminal with the possibility of interference may be a terminal possessed by people who accompany or people around, such as a searcher.
  • the searcher inputs the identification information of the device through the input device of the signal measuring device and transmits the identification information to the mobile communication network or the location measuring server.
  • the information sent at this time includes identification information of the signal measuring instrument and identification information of a terminal having a potential interference source.
  • the identification information of the interference source terminal may include carrier information and a telephone number of the terminal.
  • the information of the terminal having the possibility of interference may be information of the interference terminal for each signal measuring device.
  • the positioning server receives the information of the terminal having the possibility of interference transmitted by each signal measuring device. After listing all the signal measuring devices searching for one target terminal, it transmits the information of the terminal having the possibility of interference sent by each signal measuring device to the mobile communication network.
  • the information to be sent may be transmitted together with identification information of the target terminal and identification information of terminals having a possibility of an interference source for the target terminal.
  • the identification information of the target terminal an assigned task ID or a telephone number of the target terminal in a positioning system capable of identifying the target terminal may be used. In this way, all interference source information about signal measuring devices searching for one target terminal is sent to the mobile communication network to minimize interference.
  • the location measuring server converts the information of the interferer (or possibly terminal) from each signal measurer transmitted by each signal measurer to the information of the interferer (or possibly terminal) for each target terminal.
  • the location measurement server may grasp the provider information of the target terminal, and may select and transmit only the information of the terminal having the potential of the interference source subscribed to the provider to the corresponding mobile communication network.
  • the time point at which the location measurement server transmits information on the terminals capable of the interference source may be set before call setup for searching for a target terminal or uplink signal setup for searching. Accordingly, the base station of the mobile communication network changes the resource allocation so that the terminal having the potential of the interference may not cause interference in advance.
  • information of the interference source may be updated at any time. This allows the searcher to additionally input information of the terminal that may interfere with the signal measuring device during the search, and the signal measuring device may transmit the information to the positioning server or the mobile communication network.
  • the positioning server may continuously transmit the information of the interference source received from the signal measuring device to the mobile communication network.
  • FIG. 16 illustrates an embodiment of a positioning server for performing an operation proposed in the present disclosure.
  • the positioning server 1600 stores a control device 1610 that controls the overall operation of the positioning server, an input device 1620 for receiving input from a user, and information used by the positioning server.
  • the storage device 1630, a first communication device 1640 for communicating with a mobile communication network, and a second communication device 1650 for communicating with a signal measuring device may be included.
  • the components shown in FIG. 16 are not essential to implementing a location server, so the location server described herein may have more or fewer components than those listed above.
  • the input device 1620 may receive information from an administrator.
  • the location measuring server may further include an output device (not shown) such as a screen for displaying location information and related information of the target terminal together with the input device.
  • the first communication device 1640 and the second communication device 1650 may communicate with a mobile communication network or signal measuring devices, respectively.
  • the communication method for communicating with the mobile communication network in the first communication device 1640 and the communication method for communicating with the signal measuring device in the second communication device 1650 may use different methods. Alternatively, the same communication method may be used.
  • the first communication device 1640 and the second communication device 1650 are separately illustrated, but the present invention is not limited thereto and may be implemented as one device according to a communication method used.
  • the storage device 1630 may store information on the possibility of a registered signal collector and an interference source connected thereto.
  • the storage device 1630 may store an identification number of a terminal or a signal measurer connected to the signal measurer.
  • the storage device 1630 may store terminal information of a searcher having a signal measuring device in advance.
  • the controller 1610 may control an input device, an output device, a storage device, and a communication unit.
  • the control device 1610 may generate new information by combining the information input by the administrator through the input device and the information sent by the signal measuring device, and transmit the new information to the mobile communication network.
  • the information on the interferer transmitted by the signal measurer is information on the interferer for each signal measurer.
  • the control device 1610 may convert the information of the interference source for each signal measuring device into information of the interference source for each target terminal and transmit the information to the base station. For example, all of the interference sources for the signal measuring devices for measuring the position of one target terminal or a terminal having a potential of the interference sources may be transmitted to the base station of the mobile communication network.
  • This embodiment describes a method and apparatus for acquiring information on a location of a specific terminal in a wireless communication system, particularly in a mobile communication system.
  • a new type of apparatus including a downlink signal receiver and an uplink signal receiver is proposed.
  • the proposed apparatus may include one or more uplink signal receivers, and one or more uplink signal receivers may be installed in different physical locations.
  • the downlink receiver in the signal measurer according to the present disclosure is not an essential element, and it is understood that the downlink receiver can be widely applied to any signal measurer having a receiver of the uplink signal and measuring a signal of the target terminal.
  • the apparatus described in this embodiment may obtain information of which signal is transmitted from the terminal to the base station through the uplink by analyzing the downlink signal transmitted by the base station.
  • the uplink signal may be received through an uplink signal receiver to determine whether the uplink data is transmitted from the terminal to the base station, and the location of the corresponding terminal can be determined based on the received signal or data.
  • a related field of the present embodiments is a technique for obtaining location information of terminals in a wireless communication system.
  • Applicable products and methods of the present embodiments are accurate location information services of terminals using mobile communication systems as well as traffic information and public services through wireless communication systems.
  • the present embodiments As a field in which the present embodiments are expected to be applied in the future, it can be applied in the field of location services, road control, traffic control, location information service security of various terminals.
  • the prior art which is most relevant to the present embodiments, is the mobile communication system that is most relevant.
  • FIG. 1 is a diagram of a signal meter according to an exemplary embodiment of the present disclosure.
  • the signal measurer considered in the present disclosure includes a downlink signal receiver 110, an uplink signal receiver 120, an antenna 140, and a controller 130.
  • the downlink signal receiver 110 of the signal measurer receives uplink resource allocation information transmitted from the wireless communication system, and the uplink signal receiver 120 receives an uplink signal transmitted from the terminal to the base station. Unlike the mobile communication terminal or the base station, the signal measurer considered in the present disclosure can receive both uplink and downlink signals.
  • the controller 130 processes the received uplink signal or the downlink signal.
  • the signal measurer acquires uplink resource allocation information by processing control information received through the downlink signal receiving unit 110 and signals a corresponding uplink resource based on the obtained uplink resource allocation information.
  • the target terminal determines that the transmission of the uplink signal, receiving the uplink through the uplink signal receiver 120, based on the size of the received signal location information of the terminal Acquire.
  • the location information may include various information such as the reception strength, time delay, and reception direction of the signal, including whether the terminal exists near the signal measuring device.
  • the signal measurer of FIG. 1 may obtain uplink resource allocation information in various ways.
  • the uplink resource allocation information may be received from a mobile communication base station using another communication channel.
  • uplink resources and transmission parameters promised in advance by the mobile communication base station and the signal measurement engineer of the present invention can be used.
  • both downlink and uplink signals are received through one antenna.
  • the signal measurer may control the uplink signal receiver 120 and the downlink signal receiver 110 to interwork through the controller 130.
  • the uplink signal receiver 110 and the downlink signal receiver 120 use one antenna in the structure of FIG. 1, the uplink signal receiver 110 and the downlink signal receiver 120 are uplink antennas. And downlink antennas may be used separately, and a plurality of uplink antennas and uplink signal receivers may be used.
  • FIG. 2 is a diagram illustrating an overall relationship between a signal measuring device, a base station, and a target terminal according to an embodiment of the present disclosure.
  • one or more signal measuring instruments may be disposed adjacent to a target terminal to measure a position.
  • the signal measuring devices receive a signal transmitted by the target terminal, measure information such as signal strength, arrival time delay, and direction of reception of the received signal, and calculate the position of the target terminal based on the information.
  • the location calculation method may use a method of sending information measured by a plurality of signal measuring devices to a location measuring server and calculating a location of a target terminal in the location measuring server.
  • the calculated position information of the target terminal can be sent to each signal measuring device.
  • information may be shared between signal measuring devices as measurement information, and the position of the target terminal may be measured in each signal measuring device.
  • the base station establishes a link with the target terminal to perform communication, and the base station allows the target terminal to transmit an uplink signal and transmit uplink resource allocation information thereof to the signal measurer.
  • the uplink signal of the target terminal may be transmitted by using a predetermined resource and time between the mobile communication base station and the signal measuring device of the present disclosure. In this case, the base station may inform the signal measuring device or the location measuring server of information on whether the uplink signal setting of the target terminal is made or terminated.
  • the signal measuring device described above is similar to the signal measuring device of FIG. 1, and the ones described herein as signal measuring devices can be applied to the signal measuring device of FIG. 2.
  • the invention of Figure 2 can be used for various purposes to estimate the position of the target terminal.
  • the signal measuring device of the present disclosure measures downlink signals transmitted by a base station or uplink signals transmitted by a target terminal and obtains information such as the presence or absence of the target terminal, location information, and distance from the apparatus of the present disclosure based on the measured signal. Can be.
  • the apparatus of the present disclosure may measure information such as a magnitude and a time delay of a signal of the target terminal.
  • the signal measurer 300 of the present disclosure may include one or more downlink signal receivers 310 and one or more uplink signal receivers 320 to receive a mobile communication signal.
  • the signal measuring device 300 includes a control unit 330 for controlling the received signal.
  • the signal measuring unit 300 may include a communication unit 340 capable of communicating with a base station, a positioning server, or another signal measuring unit, and a GPS receiver 370 for acquiring position information of the signal measuring unit itself or synchronizing with absolute time.
  • the input unit 350 may receive an input from a user, and the display unit 360 may display information processed by the controller 330.
  • the uplink signal receiver 320 and the input unit 350 may be included in an information acquisition unit (not shown).
  • the downlink signal receiver 310 and the uplink signal receiver 320 may be an LTE downlink signal receiver and an LTE uplink signal receiver.
  • the LTE downlink receiver acquires a system time synchronization by capturing an initial downlink receiver of LTE, and acquires a base station ID and system information.
  • the downlink signal receiver 310 may receive control information transmitted to a target terminal which is a base station.
  • the LTE uplink receiver detects a transmission signal of the target terminal based on the information of the uplink transmission resources allocated to the target terminal and calculates the arrival time and signal power of the signal.
  • the signal measuring apparatus 300 of FIG. 3 may acquire an absolute time reference to calculate a difference in time points at which each signal measuring apparatus receives an uplink signal of the target terminal.
  • the signal measuring devices secure temporal synchronization based on the GPS signal received from the GPS receiver 370 to perform this role.
  • the present disclosure may use other methods to secure time synchronization between different types of signal measuring devices or to distinguish the difference in time points of arrival. For example, it is possible to use high-precision clocks and use them in advance to synchronize the signal measuring devices or to calculate relative differences.
  • the time measurement may be performed based on a time difference between a time point when a specific signal of the LTE downlink receiver is received and a time point when an uplink signal of another user is received.
  • the reception information of the signal measuring device is transmitted to the location measuring server.
  • the GPS receiver 370 also functions to measure the position of the signal meter.
  • the location information of the signal measuring device may be transmitted to the location measuring server and used to measure the location of the target terminal.
  • the signal measuring device 300 of the present disclosure may use a separate communication unit 340 when direct communication with a location measuring server or a base station or direct communication with another signal measuring device is required.
  • the embodiment of the signal measuring device 300 of FIG. 3 includes an output device such as a display for displaying a location of a target terminal to a user.
  • an input unit 350 for inputting a user may be provided.
  • the user may input additional information, such as manually inputting information on the position of the current signal measuring instrument, to increase the accuracy of the position measurement. have.
  • the controller 330 of FIG. 3 controls the operation of the signal measuring device described above.
  • the control unit 330 is connected to each device serves to control the information receiving, measuring, communication, input and output described in the present specification.
  • the apparatus of FIGS. 1 and 3 may receive downlink of a mobile communication system to obtain uplink resource allocation information.
  • uplink resource allocation information of the target terminal may be obtained from the base station through another communication channel.
  • a resource to be allocated to a target terminal may be promised in advance between the base station and the signal measurer of the present disclosure, and the promised uplink resource may be used.
  • the uplink signal is detected based on the uplink resource allocation information to determine whether the target terminal exists.
  • 1 and 3 illustrate a case in which the signal measurer includes both a downlink receiver and an uplink receiver.
  • the present invention is not limited thereto, and the uplink interference control methods according to the present disclosure may be applied to a case in which the signal measurer includes only the uplink receiver without the downlink receiver.
  • the position of the target terminal may be measured using a plurality of devices.
  • a person possessing a device considered in the present disclosure may attempt communication with a terminal using the same communication system.
  • a target terminal communicates in an LTE manner
  • a person carrying the device of FIG. 2 and measuring the signal of the target terminal may also communicate in the LTE manner.
  • the device of the present disclosure may not operate normally due to a signal of an LTE terminal used by a person having a device considered in the present disclosure.
  • the present disclosure obtains uplink resource allocation information of a target terminal, monitors an uplink signal based on the target terminal, and determines that an interference by a signal of a terminal other than the target terminal has occurred in the uplink signal of the target terminal.
  • the present invention proposes a signal measuring device that informs a base station or a location measuring server of interference occurrence information so that the base station can adjust resource allocation of another terminal causing interference.
  • control unit 330 of the signal measuring device 300 of the present disclosure obtains uplink resource allocation information of the target terminal, monitors an uplink signal using the uplink resource allocation information of the target terminal, and target terminal If it is determined that interference by another terminal has occurred in the uplink signal of, the base station transmits to the base station or the location measurement server using the communication unit 340 to adjust the uplink resource allocation of the target terminal or the other terminal. Generates interference occurrence information of the uplink signal of the target terminal for the.
  • the signal measurer 300 of the present disclosure receives identification information of the target terminal from the base station.
  • the signal measurer may receive a forward signal, that is, a downlink signal, to determine what control information is transmitted from the base station to the terminal.
  • the signal measuring unit 300 processes the received downlink signal by using the identification information of the received target terminal to process the received downlink signal, thereby reading control information designated by the base station for the target terminal, that is, the target terminal. Uplink resource allocation information can be obtained.
  • the identification information of the target terminal may be an RNTI (Radio Network Temporary Identifier) assigned to the target terminal by the base station.
  • the signal measuring unit 300 receives control information connected to a Radio Network Temporary Identifier (RNTI) through a downlink signal receiving unit to transmit an uplink signal, that is, the control information described later by the target terminal. Based on this, it may be determined whether to transmit an uplink signal to a base station.
  • RNTI Radio Network Temporary Identifier
  • the RNTI is used as a temporary ID of a terminal in one base station, and it is possible to maintain anonymity because it cannot know which RNTI is allocated to one terminal.
  • the RNTI has been described based on a method of identifying the terminal.
  • the present disclosure is intended to be used as the same function if the ID is temporarily assigned to the terminal in one base station or cell.
  • the communication device may receive control information associated with the specific RNTI in order to measure only the location information of the terminal identified by the specific RNTI, instead of measuring the location information about the arbitrary terminal.
  • RNTI as identification information of the terminal has the advantage of specifying the terminal to measure the location information at a specific point in time without leaking personal information (e.g. phone number / name / resident registration number) of the terminal user.
  • the uplink signal of the target terminal is measured by using uplink resource allocation information and transmission parameters of the target terminal based on the RNTI information of the target terminal, based on the presence of the terminal, the distance from the apparatus of the present disclosure, A method of obtaining information of a terminal including a location is proposed.
  • the base station may transmit a downlink control signal to the target terminal.
  • the signal measurer 300 of the present disclosure may receive a downlink signal transmitted from a base station to a target terminal through a downlink signal receiver.
  • reception and decoding of a downlink channel should be performed.
  • a method for receiving downlink control information will be described.
  • the base station informs the signal measuring device of the present disclosure of the RNTI information of the target terminal, but is not limited thereto.
  • the RNTI to be used by the target terminal between the base station and the signal measuring device may be promised in advance and the same operation may be performed based on the same.
  • the disclosure of the present disclosure is equally applicable to the case where the signal measurer 300 does not know the RNTI of the target terminal or attempts to acquire location information for an unspecified number.
  • the signal measurer of the present disclosure may request to establish a call between the base station and the target terminal by transmitting a unique number, such as a telephone number of the target terminal to be tracked, to the mobile communication network.
  • a unique number such as a telephone number of the target terminal to be tracked
  • Such call setup may be requested by the signal measurer communicating directly with the mobile communication network, but may be configured to send the request to the location measurement server and to serve to communicate with the mobile communication system.
  • the location measurement server may request a call setup for the target terminal from the mobile communication system.
  • the signal measurer 300 of the present disclosure detects and measures an uplink signal based on uplink resource allocation information of the target terminal. Based on the measured uplink signal, information such as presence or absence of a target terminal, time delay, and signal size can be obtained. That is, the signal measurer 300 monitors the uplink signal using the acquired uplink resource allocation information and transmission parameters of the target terminal.
  • the uplink resource allocation information and transmission parameters may be obtained by the signal measurer 300 of the present disclosure receiving a downlink channel based on the RNTI. In another embodiment it is possible to receive from a base station via another communication channel. It is also possible to use uplink resources and transmission parameters previously promised to the base station.
  • the signal of the present disclosure It can act as a big interference to the device.
  • the signal measuring device 300 may not collect information of the target terminal normally and may not accurately measure the position of the target terminal.
  • the signal meter of the present disclosure or other communication equipment connected to the signal meter of the present disclosure includes an input device.
  • other communication equipment connected to the signal measuring device of the present disclosure may be a conventional mobile communication terminal, tablet, smart phone, and the like.
  • a user may input identification numbers such as a telephone number and a serial number of a terminal that may cause uplink interference to the signal measuring device of the present disclosure.
  • the signal measurer of the present disclosure informs the base station or the mobile communication network of information of a terminal which is likely to be the interference source.
  • the base station or the mobile communication network receiving the information of the terminals may form a communication channel by adjusting the frequency band of the terminal which may possibly interfere with a frequency band different from that used by the target terminal.
  • the signal measurer of the present disclosure may directly transmit information of a terminal having a potential source of interference to the mobile communication base station, the information may be transmitted to the location measurement server and the location measurement server may be transmitted to the mobile communication base station.
  • the operator may input the information of the interference source terminal to the location measurement server to transfer to the mobile communication base station.
  • the position measurement server may include an input device and a communication device, and the operator may input the information, and the position measurement server may serve to inform the mobile communication base station thereof.
  • the information on the interferer may be information on a company to which the interferer terminal is subscribed and a telephone number. For example, it may be IMSI, TMSI, or serial number at the time of manufacture of the terminal.
  • the mobile communication base station receiving the information of the interference source may set the frequency band used by the interference sources differently from the frequency band used by the target terminal.
  • the interference source may be a mobile communication terminal used by a searcher and assistants and a terminal connected to a signal measuring device of the present disclosure to perform a communication role.
  • the positioning server transmits not only the identification information of the probable terminal that is input or stored in the positioning server, but also the identification information of the probable terminal sent by the signal measuring instrument to the mobile communication network. Can be. In this way, not only the terminal having a potential source of interference of the target terminal can be input through the positioning server but also through a signal measuring instrument.
  • the location measurement server includes an input device for the administrator to input information and an output device such as a screen for displaying the location information and related information of the target terminal. It also includes a signal measuring device and a communication device capable of communicating with the mobile communication network.
  • the communication device may use a different communication method for communicating with a signal meter and a general method for communicating with a mobile communication network. It is also possible to use the same communication method.
  • the positioning server also has a storage device for storing information of the registered signal collector and the possibility of the interference source connected thereto.
  • the storage device may store an identification number of a terminal or a signal measuring device connected to the signal measuring device.
  • the terminal information of the searcher having a signal measuring device may be stored in the storage device in advance.
  • the position measuring server includes a control device having a function of controlling an input device, an output device, a storage device, and a communication unit, and the control device combines the information inputted by the administrator through the input device and the information sent by the signal measuring device. Create and pass it to the mobile communication network.
  • the information on the interferer transmitted by the signal measurer is information on the interferer for each signal measurer.
  • the location measuring server converts the information of the interference sources for each signal measuring device into information of the interference sources for each target terminal and transmits the information to the base station. In one embodiment, all the interfering sources of the signal measuring devices for measuring the position of one target terminal or the terminal information of potential interference sources is transmitted to the base station of the mobile communication network.
  • the base station of the mobile communication network can avoid the interference by not assigning the frequency used by the target terminal to the potential terminal of the interference source.
  • the frequency band used by the target terminal is f1
  • the frequency band used by the interference sources is set to f2.
  • f1 and f2 are different frequencies.
  • f1 and f2 may be different frequency bands.
  • One embodiment of allocating different frequencies may include allowing a target terminal and an interference source to use different communication schemes. For example, a target terminal transmits a signal in an LTE communication scheme, and a terminal capable of interfering sources is configured to communicate in a W-CDMA scheme.
  • the information on the possible sources of interference for each signal measuring device or location measuring server may be registered in advance in the signal measuring device or the location measuring server and transmitted to the mobile communication network to minimize the interference in the uplink signal transmitted by the target terminal.
  • the base station may allocate a resource allocated to an interference source (or a terminal which is likely to be an interference source) differently from a resource allocated to a target terminal.
  • the base station After the base station sets the frequency setting for the interferer terminal differently from that of the target terminal, the base station can transmit the information to the location measurement server to inform.
  • the location information of the frequency allocated to the target terminal to the location measurement server and the frequency information of the potential terminal of the interference source can be transmitted to the location measurement server.
  • the position measurement server may output the frequency setting information through a screen or the like.
  • the signal measurer of the present disclosure collects uplink resource allocation information of the target terminal, and detects and measures an uplink signal of the target terminal based on this.
  • the signal measuring device 300 may not only detect and measure an uplink signal of the target terminal, but also communicate to share the information with a server or other equipment.
  • the signal used by the target terminal and the equipment for communication may use the same communication method.
  • the communication device may generate a high amount of interference that the target terminal cannot detect and measure a signal transmitted.
  • communication equipment used by a person carrying a signal measuring instrument or a person working nearby may generate a tremendous amount of interference.
  • the signal measuring device 300 uses the communication unit 340 to provide the interference occurrence information of the uplink signal of the target terminal. Transmit to base station or location measurement server. As a result, the base station may recognize or predict that interference occurring in the uplink signal of the target terminal occurs, and adjust uplink resource allocation or frequency of another terminal that may cause interference in the uplink resource allocated to the target terminal. .
  • the control unit 330 of the signal measuring unit 300 receives an uplink signal in an uplink resource allocated to the target terminal through the uplink signal receiver, and receives the received uplink signal by the target terminal.
  • the signal is separated into an uplink signal and an interference signal from another terminal, and the strength of the interference signal from another terminal is greater than a predetermined signal strength, it may be determined that the interference from another terminal has occurred in the uplink signal of the target terminal. .
  • the base station may cause interference in the frequency band allocated to the target terminal.
  • the interference generation information of the uplink signal of the target terminal can be generated so that the frequency band of another terminal can be changed into a frequency band which does not cause interference to the frequency band allocated to the target terminal.
  • the communication unit 340 may transmit the interference occurrence information of the uplink signal of the target terminal to the base station or the location measurement server.
  • the base station may set a frequency band used by the target terminal and a frequency band of a device used by the user in the vicinity of the signal measuring device 300 of the present disclosure or a band different from the band used by the target terminal.
  • the signal measurer 300 may stably detect and measure the uplink signal transmitted by the target terminal.
  • the base station receiving the information may be configured such that the target terminal and the interference source use different uplink frequencies.
  • the base station detects the interference in the uplink signal transmission time allocated to the target terminal. It is possible to generate the interference generation information of the uplink signal of the target terminal so that the uplink signal transmission time of another terminal that can be generated can be changed to a transmission time that does not cause interference in the uplink signal transmission time allocated to the target terminal.
  • the communication unit 340 may transmit the interference occurrence information of the uplink signal of the target terminal to the base station or the location measurement server.
  • the mobile communication base station receiving the information may perform resource allocation so that the target terminal and the interference source transmit uplink signals at different times.
  • the present disclosure provides a method for notifying the mobile communication network of an ID or telephone number of the communication terminal in advance.
  • the mobile communication network sets a frequency band used by the target terminal and a frequency band of a terminal used by a user in the vicinity of the signal measuring device of the present disclosure or a band different from the band used by the target terminal. This allows the signal measurer considered in the present disclosure to stably detect and measure the uplink signal transmitted by the target terminal.
  • the signal meter 300 of the present disclosure may include an input unit 350.
  • the signal measurer 300 may request to input an identification number of another terminal that may cause interference with an uplink signal of the target terminal.
  • the user may input an identification number of another terminal that may cause interference with an uplink signal of a target terminal to the signal measuring device 300 of the present disclosure through the input unit 350.
  • the identification number of the other terminal may be other information for identifying the other terminal, such as a phone number or information of the operator.
  • it may be information of a mobile communication terminal, for example, a phone number or information of a carrier, which is carried by people who carry or work near the signal measuring device 300.
  • the signal transmitted by the communication unit 340 in the position of the uplink signal receiver 320 of the signal meter may be an interference source.
  • the searcher may input identification information of the communication unit 340 through the input unit 350.
  • the signal measuring device of FIG. 3 may identify an identification number of the terminal by itself and include it in a terminal having a possibility of an interference source.
  • the control unit 330 obtains identification information of the communication unit 340 through a storage device of the USIM or the terminal, and includes the information in terminal information that may be an interference source.
  • the identification information of the communication unit 340 may be stored and used together with the identification number of the signal measuring device in the location measuring server or the mobile communication network.
  • the location measuring server or the base station of the mobile communication network may store and use the identification information of the communication unit for each signal measuring device in a storage device.
  • the mobile communication base station may differently set a resource used by the target terminal and a resource used by the communication unit 340. For example, the frequency used by the target terminal is different from the frequency used by the communication unit 340.
  • the communication unit 340 may perform resource allocation so that the uplink signal is not transmitted. If several signal measuring devices measure the position of one target terminal, the communication unit 340 of each signal measuring unit may allocate resource so that the target terminal does not transmit the uplink signal at the time of transmitting the uplink signal for position measurement. have.
  • the signal measuring unit 300 monitors the uplink signal based on the identification information of the other terminal to determine whether the uplink signal interference between the target terminal and the other terminal, and determines that the uplink signal interference between the target terminal and the other terminal has occurred.
  • the base station can generate the interference source information including the identification information of the other terminal so that the base station can change the uplink resource allocation information of the other terminal to a resource that does not interfere with the uplink signal of the target terminal.
  • the communication unit may transmit the interference source information including the identification information of the other terminal to the base station or the location measurement server.
  • the identification information of the other terminal may be an RNTI. Alternatively, the information may be information of a resource and time used by another terminal.
  • the signal measuring device 300 of the present disclosure receiving the information may transmit information of the terminal having the possibility of interference to the base station. Accordingly, the base station determines the possibility of the uplink signal interference between the target terminal and the other terminal based on the identification information of the other terminal, and if it is determined that there is a possibility of the uplink signal interference between the target terminal and the other terminal, The uplink resource allocation information of may be changed to a resource that does not cause interference with the uplink signal of the target terminal. For example, the base station may form a communication channel with other terminals using a frequency band different from the first frequency band used by the target terminal. In this case, the adjacent frequency band may also be avoided to prevent additional interference.
  • the interference may be further reduced by using a frequency other than the adjacent frequency of the frequency used by the target terminal.
  • a link of a terminal capable of interfering with a band completely different from a frequency band used by an uplink of the target terminal may be formed.
  • the signal measuring device 300 may transmit information of the terminal having the possibility of interference to the location measuring server, and the location measuring server may communicate with the base station as a window.
  • the signal meter 300 of the present disclosure may include an input unit 350.
  • the user may input the identification number of the other terminal that may cause uplink interference to the signal measuring device 300 of the present disclosure.
  • the identification number of the other terminal may be other information for identifying the other terminal, such as an RNTI or a telephone number.
  • it may be a carrier information and a phone number of another terminal.
  • it may be a serial number of the terminal.
  • the signal measuring device 300 of the present disclosure receiving the information includes uplink resource allocation information of the target terminal and information of other terminals based on control information received from the downlink signal receiving unit, identification information of the target terminal, and identification information of another terminal.
  • the base station may control to transmit the identification information of the other terminal to the base station or the location measurement server using the communication unit 340 so that the base station can adjust the uplink resource allocation of the other terminal.
  • the process of collecting information for identifying the other terminal in the signal measuring device 300 may be performed by receiving an input from a user, but the information of the telephone number and information of the operator is stored in the signal measuring device of the present disclosure. It may be more efficient to automatically perform the request for the location information of the target terminal. Alternatively, it is possible to store information on possible sources of interference for each signal meter in the server and use them when necessary. That is, if one signal measuring device is used to store the information of the interfering terminal for each signal measuring device and search for a specific target terminal, the connected interfering terminal information can be transmitted to the mobile communication network. At this time, the interference terminal for each signal measuring device may be another mobile communication terminal possessed by a searcher possessing the corresponding signal measuring device or a terminal serving as a communication channel of the signal measuring device.
  • the base station or mobile communication network may store identification information of the communication unit 340 of the signal measuring device of FIG. 3.
  • the base station may set different resources used by the target terminal and resources used by the communication unit 340 based on the identification information of the communication unit 340.
  • the frequency used by the target terminal is different from the frequency used by the communication unit 340.
  • the communication unit 340 may perform resource allocation so that the uplink signal is not transmitted. If several signal measuring devices measure the position of one target terminal, the communication unit 340 of each signal measuring unit may allocate resources so as not to transmit the uplink signal at the time when the target terminal transmits the uplink signal for position measurement. have.
  • the signal measurer of the present disclosure transmits a unique number, such as a telephone number of a target terminal to track a location, to a mobile communication network, and requests to establish a call between the base station and the target terminal.
  • a unique number such as a telephone number of a target terminal to track a location
  • Such call setup may be requested by the signal measurer communicating directly with the mobile communication network, but may be configured to send the request to the location measurement server and to serve to communicate with the mobile communication system.
  • positioning may include a positioning server in the system.
  • the location measuring server calculates the location of the target terminal based on the received power, time delay, and location of the information collector measured by each information collector, and sends the information back to the information collector.
  • the location measurement server may serve as a window of communication for collecting information of an interfering terminal transmitted by each information collector and transmitting the information to a mobile communication system.
  • it may serve to transmit the main information on the RNTI and resource allocation of the target terminal set by the mobile communication system to the signal measuring device considered in the present disclosure.
  • Using the method of the present disclosure can not only reduce the complexity of the signal measuring device receiving the control information, but also improve the uplink reception performance transmitted by the target terminal.
  • FIG. 4 is a structural diagram according to an embodiment of the signal meter 400 of the present disclosure.
  • the signal measuring device considered in the present disclosure or an apparatus connecting the same is not limited thereto, and various configurations are possible.
  • the signal measuring device does not include a configuration of a communication unit, a display unit, an input unit, etc., and requires the use of a corresponding function, and other external devices (location measuring server and other signal measuring devices), for example, an external smart device. It connects to a phone or tablet and implements that function. This can reduce the number of components of the signal meter.
  • the configuration in the dotted box is an embodiment of the signal measuring device 400, which can be used by connecting to a terminal 450 such as a commercial tablet and a smartphone. Since the description of each configuration of the signal measuring device 400 of FIG. 4 corresponds to the configuration of the signal measuring device 300 of FIG. 3, reference may be made to the description of the configuration of the signal measuring device 300 of FIG. 3.
  • other communication equipment connected to the signal meter of the present disclosure may have an input unit or may be connected to the input device.
  • other communication equipment connected to the signal measuring device of the present disclosure may be a conventional mobile communication terminal, tablet, smart phone, and the like.
  • a user may input an identification number of a terminal that may cause uplink interference to the signal measuring device of the present disclosure.
  • the identification number of the other terminal may be other information for identifying the other terminal, such as a telephone number.
  • the signal measurer of the present disclosure that has received the information may transmit information of a terminal capable of the interference source to a base station or a location measurement server.
  • the base station determines the possibility of the uplink signal interference between the target terminal and the other terminal based on the identification information of the other terminal, and if it is determined that there is a possibility of the uplink signal interference between the target terminal and the other terminal,
  • the uplink resource allocation information of may be changed to a resource that does not cause interference with the uplink signal of the target terminal.
  • the base station may form a communication channel with other terminals using a frequency band different from the first frequency band used by the target terminal.
  • the signal transmitted by the terminal 450 may be an interference source in the position of the uplink signal receiver 420 of the signal measuring device.
  • the searcher may input identification information of the terminal 450 through the input device 460.
  • the signal measuring instrument of FIG. 4 may identify the identification number of the terminal by itself and include it in the terminal having the possibility of an interference source.
  • the terminal 450 acquires identification information of the terminal 450 through the USIM or the storage device of the terminal, and includes the information in terminal information that may be an interference source.
  • the identification information of the terminal 450 may be stored and used together with the identification number of the signal measuring device in the location measuring server or the mobile communication network. Based on the identification information of the terminal 450, the mobile communication base station may set a resource used by the target terminal and a resource used by the terminal 450 differently. For example, the frequency used by the target terminal is different from the frequency used by the terminal 450. As another example, at a time when a target terminal transmits an uplink signal for position measurement, the terminal 450 may perform resource allocation so that the terminal 450 does not transmit the uplink signal. If several signal measuring devices measure the position of one target terminal, the terminal 450 of each signal measuring unit may allocate resources so as not to transmit the uplink signal at the time when the target terminal transmits the uplink signal for position measurement. have.
  • other communication equipment connected to the signal meter of the present disclosure may have an input unit or may be connected to the input device.
  • other communication equipment connected to the signal measuring device of the present disclosure may be a conventional mobile communication terminal, tablet, smart phone, and the like.
  • a user may input an identification number of a terminal that may cause uplink interference to the signal measuring device of the present disclosure.
  • the identification information of the other terminal may be RNTI or other information capable of identifying the other terminal such as a telephone number, IMSI, TMSI, serial number.
  • the identification information may include operator information.
  • the signal measuring apparatus of the present disclosure receives uplink resource allocation information of the target terminal and uplink resource of another terminal based on the control information received from the downlink signal receiving unit, the identification information of the target terminal, and the identification information of the other terminal. Acquires allocation information, compares uplink resource allocation information of another terminal with uplink resource allocation information of a target terminal, and an uplink signal of another terminal interferes with or is expected to cause an uplink signal of a target terminal; In this case, the base station can transmit the identification information of the other terminal to the base station or the location measurement server using the communication unit so that the base station can adjust the uplink resource allocation of the other terminal. Acquiring the resource allocation information of the target terminal in the above process can also be performed using other methods described herein.
  • FIG. 5 is a flowchart of a signal measuring method according to an exemplary embodiment of the present disclosure.
  • the signal measurer of the present disclosure receives downlink signals from the base station and obtains uplink resource allocation information of the target terminal and another terminal (S510).
  • the signal measurer may parse uplink resource allocation information using identification information of a target terminal or another terminal received from a base station, input through an input unit, or prestored.
  • the identification information may be RNTI.
  • the signal measurer may directly receive uplink resource allocation information of the target terminal from the base station.
  • a predetermined resource may be used between the base station and the signal meter.
  • the information processing apparatus monitors an uplink signal using the obtained uplink resource allocation information, and determines whether uplink signal interference occurs between the target terminal and another terminal (S520).
  • the information processing apparatus analyzes the acquired uplink resource allocation information to determine whether there is a possibility of uplink interference between the target terminal and another terminal (S520). Specifically, the information processing apparatus may compare the uplink resource allocation information of the target terminal with the uplink resource allocation information of the other terminal to determine whether there is a possibility of uplink interference between the target terminal and the other terminal.
  • the information processing apparatus determines that there is no possibility of uplink interference between the target terminal and the other terminal, the process ends. However, if it is determined that there is a possibility or interference of uplink interference between the target terminal and the other terminal, the information processing apparatus transmits information about the other terminal to the base station or the location measurement server (S530).
  • the information on the other terminal may include uplink resource allocation information of the other terminal, identification information of the other terminal, and the like.
  • the base station recognizes information on the possibility of interference or occurrence of interference between the target terminal and another terminal. Accordingly, the base station can be set so that the terminal that can act as an interference source and the uplink frequency used by the target terminal uses a different uplink frequency band.
  • One way to implement this is to avoid adjacent frequencies by avoiding additional interference. That is, the interference may be further reduced by using a frequency other than the adjacent frequency of the frequency used by the target terminal.
  • Another method is to form a link of a terminal that can interfere with a band completely different from the frequency band used by the uplink of the target terminal.
  • a positioning server may be included in the system.
  • the location measurement server calculates the location of the target terminal based on the received power, time delay, signal reception direction, and location of the information collector measured by each information collector, and transmits it to the information collector.
  • the location measurement server may serve as a window of communication for collecting information of an interfering terminal transmitted by each information collector and transmitting the information to a mobile communication system.
  • it may serve to transmit the main information on the RNTI and resource allocation of the target terminal set by the mobile communication system to the signal measuring device considered in the present disclosure.
  • Using the method of the present disclosure can not only reduce the complexity of the signal measuring device receiving the control information, but also improve the uplink reception performance transmitted by the target terminal.
  • the signal measurer of the present disclosure includes at least one downlink signal receiver for receiving a downlink signal, at least one uplink signal receiver for receiving an uplink signal, and a communication unit capable of communicating with a base station or a positioning server.
  • Acquiring uplink resource allocation information of the target terminal obtaining information on another terminal capable of transmitting an uplink signal from the uplink resource of the target terminal, from the base station or the location measurement server, and uplink resource of the target terminal; It may include a control unit for monitoring the uplink signal based on the allocation information and the information on the other terminal.
  • the communication unit may transmit a request signal for requesting information about another terminal capable of transmitting an uplink signal in an uplink resource of the target terminal to a base station or a location measurement server.
  • the communication unit may transmit information of the other terminal.
  • the signal measuring apparatus of the present disclosure may include at least one downlink signal receiver for receiving a downlink signal, at least one uplink signal receiver for receiving an uplink signal, an input unit for receiving identification information of another terminal; It may include a control unit for generating the interference source information including identification information of the other terminal, and a communication unit for transmitting the interference source information to the base station or the positioning server.
  • FIG. 6 is a diagram illustrating a procedure of operating the apparatus proposed in this embodiment.
  • FIG. 6 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 every TTI. Meanwhile, the same procedure as described below may be performed in a mobile communication system other than the LTE system.
  • the communication device may receive control information transmitted from the base station to the terminal (S610).
  • the UE can demodulate and decode the downlink signal for every TTI.
  • 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 a PDCCH, but when control information is transmitted through a PDSCH, a PDSCH may be received.
  • the apparatus of the present disclosure may first receive the downlink PDCCH, and then attempt to receive the PDSCH in which the control information is received.
  • the signal measurer may receive the downlink signal and acquire information of a time when the uplink signal is transmitted based on the downlink signal.
  • the communication device may receive a forward signal, that is, a downlink signal transmitted from the base station to the terminal, and then, when and through which resource, the uplink is transmitted, and may determine what the RNTI of the terminal is at that time. That is, the resource allocation information for the uplink and corresponding identification information of the terminal such as RNTI can be obtained.
  • a forward signal that is, a downlink signal transmitted from the base station to the terminal
  • This process may include determining whether there is a terminal transmitting an uplink through control information transmitted through a downlink and what the RNTI of the terminal is. That is, when each uplink signal receiver determines that there is uplink signal transmission, the uplink signal receiver collects an uplink signal transmitted to the base station through the uplink resource, and whether the uplink signal is transmitted based on the collected uplink signal. Can be determined.
  • the one or more uplink signal receivers included in the communication device may collect uplink signals for each uplink signal receiver and attempt to receive the uplink signal. There is (S630).
  • the communication device may determine whether to transmit an uplink signal for each uplink signal receiver (S640).
  • the apparatus does not perform a separate uplink signal collection operation and waits until the next control information is received.
  • the above operation may be continuously performed at every TTI. Further, the communication device may determine the presence, location, and mobility information of the terminal based on whether the uplink signal is transmitted through the signals collected by each uplink signal receiver.
  • the above-described process may be performed based on the information of the RNTI of the terminal. That is, the communication device may determine whether only the uplink signal transmitted from the terminal having the specific RNTI is transmitted and determine whether the terminal having the specific RNTI exists, location, and mobility information.
  • FIG. 7 is a flowchart illustrating a method of detecting the presence of an uplink signal in the present embodiment.
  • the communication device may first acquire uplink transmission information from a downlink received signal obtained through the downlink signal receiver.
  • the communication device may collect an uplink signal transmitted from the terminal to the base station through the resources allocated to the uplink based on the obtained uplink transmission information, and calculate an average reception power of the collected signal (S710). ).
  • the communication device may compare the calculated average received power value with a previously calculated or set threshold value (S720). As a result of the comparison, if the average received power value is larger than the threshold value (S720-Y), since an uplink signal is received, it is determined that a terminal to measure a location exists near (S740), while the average received power value is thresholded. If it is smaller than the value (S720-N), since the uplink signal is not received, it may be determined that the terminal to measure the location does not exist nearby (S730).
  • the power of the reference signal which is a pilot signal transmitted to the uplink PUCCH or PUSCH may be used.
  • the power of the data signal transmitted on the uplink PUCCH or PUSCH may be used.
  • the presence and location information of the terminal may be determined by combining the power values of the reference signal and the data signal.
  • the measurement may be performed using a sounding reference signal transmitted through uplink.
  • At least one signal measuring device is positioned around a target terminal to detect and measure an uplink signal transmitted by the target terminal, and to control the interference of the uplink signal in the process of measuring the position of the target terminal based on the signal.
  • a method was proposed. The above-described embodiment has described a method of receiving information of an interference source known in advance and assigning it to a time different from the frequency or time used by the target terminal.
  • one or more unexpected interference sources may transmit an uplink signal around the positioning device of the present disclosure while the positioning device of the present disclosure is actually operating. Even in this case, it may be difficult for the interference source to properly detect and measure the uplink signal of the target terminal due to the interference.
  • another embodiment of the present disclosure proposes that an uplink receiver of a signal measuring device of the present disclosure detects an interference source of an uplink signal present in the vicinity and transmits information about the interference to a base station.
  • the signal measurer of the present disclosure can directly inform the mobile communication system.
  • the signal measuring device informs the location measuring server so that the location measuring server can inform the mobile communication system.
  • the mobile communication system or the base station of the present disclosure confirms the existence of the interference source reported by the signal measurer and uses resources (frequency, code) so that the location measurement device does not interfere with detecting the uplink signal of the target terminal. , Time, etc.).
  • the mobile communication system may change a frequency used by an interference source or set a time used differently from an uplink signal transmission time of the target terminal. That is, it is possible to detect and measure signals of the target terminal more easily by allowing the target terminal to set different resources such as frequency and time for transmitting the uplink signal and resources such as frequency and time for transmitting the uplink signal. It is to be.
  • the signal measuring device may be notified to notify the signal measuring unit that resource allocation is performed to reduce interference. This allows the mobile communication system to immediately notify the signal meter. Alternatively, the mobile communication system can notify the location measurement server and the location measurement server can inform the signal measuring devices of the same effect.
  • the mobile communication base station can reduce the interference by changing the resource allocation. If the change of the resource allocation proceeds, since the interference is reduced, the base station can inform the signal measuring device or the location measuring server that the resource allocation change is completed.
  • the signal measuring device receiving the resource allocation change information may determine whether the amount of interference is reduced, stop the interferometry on the resource, or change the measuring method.
  • An example of changing the measuring method may include lengthening a measuring period.
  • the signal measurer detects and detects an interference source that transmits a strong interference signal through uplink.
  • the uplink signal receiving unit of the signal measuring unit includes an uplink signal measuring unit 810 and an uplink signal receiving control unit 820.
  • the uplink signal measuring unit 810 may receive an uplink signal of a target terminal and / or an uplink signal of an interference source.
  • the signal measuring device measures the reception power of the uplink signal of the interference source and informs the base station, the location measurement server, or the mobile communication system of the information about the interference source when the reception power of the interference source is received to be larger than a predetermined threshold. .
  • the uplink signal measuring unit 810 of FIG. 8 may be implemented in other forms according to the operating system.
  • GSM can be implemented by measuring the power received in the frequency and time slot used.
  • the amount of interference and the interference source can be measured based on the midamble power of the frame transmitted in the uplink.
  • the signal measurer detects the interference, it can transmit information on the frequency and time resources used by the detected interference source to the mobile communication base station.
  • the transmission can be delivered directly from the signal meter to the base station, but can also be transferred to a server, such as a location measurement server, which can be sent to the base station.
  • a despreader for uplink, an energy meter for the despread signal, and a low pass filter in the time axis for the measured energy can be implemented.
  • the information of the spreading code from which the interference is detected and the information of the detected time can be transmitted to the mobile communication base station.
  • the transmission can be delivered directly from the signal meter to the base station, but can also be transferred to a server, such as a location measurement server, which can be sent to the base station.
  • the mobile communication network may inform the signal measuring device of information of the probable spreading codes in advance, thereby reducing the complexity of the signal measuring device.
  • the information may be transmitted to the mobile communication system that has received the request.
  • the uplink signal measurer 810 of FIG. 8 may be used in a system such as LTE.
  • a PUCCH for transmitting control information and a PUSCH for transmitting data exist in the uplink of the LTE system.
  • the interference source may transmit the PUCCH or may transmit the PUSCH. Through various methods, information on the interference source in the LTE system may be informed to the mobile communication system.
  • the base station if the power of the signal transmitted at the corresponding frequency time is measured and the power of the measured signal is greater than or equal to a predetermined threshold, the detected uplink resource information including the frequency and time information is transmitted to the base station of the mobile communication network. Inform. In case of LTE, since multiple users can use resources of the same time and frequency in the form of CDM, the base station also informs the base station of information of a code used by a strongly detected signal and information of a detected channel of SRS, PUCCH or PUSCH.
  • SRS sounding reference signal
  • the mobile communication system has a table of resources allocated for each user and a terminal identification number such as RNTI or TMSI, and then determines the terminal using the resource reported by the signal measurer as the source of interference, and the resource for the frequency or time for the terminal. Change the assignment.
  • the spreading code allocated to the interference source terminal may be set differently.
  • the location server can be notified and the location server can inform the signal meter.
  • the uplink signal measuring unit 810 of the signal measurer of FIG. 8 may receive an uplink signal for a target terminal and / or an uplink signal for an interference source. However, when the uplink signal measuring unit 810 receives the uplink signal for the interference source, it may mean that the signal of the target terminal is not properly received or the SINR of the signal of the target terminal is not high. 8 illustrates the uplink signal reception of LTE as an example. However, it will be appreciated that the receiver can be implemented by changing some specific methods of measuring GSM and W-CDMA.
  • FIG. 9 is a flowchart illustrating a process of informing a mobile communication network of interference source measurement and measured information in a signal measuring device according to an exemplary embodiment of the present disclosure.
  • the signal measurer of FIG. 9 attempts to detect a signal for the target terminal (S910). When a signal for the target terminal is detected, the signal measurer measures an uplink signal of the target terminal (S920). The signal measurer calculates the position of the target terminal based on the measured information (S930). This process may be performed by the signal measuring instrument, but may be performed by the positioning server by transmitting the information to the positioning server.
  • the signal measurer may request information on the interference source from the mobile communication system (S940).
  • Information on the interference source is received from the mobile communication system (S950), and it may be used for interference source detection. This process is indicated by a dashed box. The process of receiving the information of the interference source indicated by the dotted line may be omitted depending on the system.
  • the information on the interference source may include identification information such as RNTI used by the terminal having the possibility of interference.
  • resource information such as channel termination, frequency, time, code, etc. of the resources used by the terminal having the potential of interference.
  • the signal measurer attempts to detect a signal for an interference source (S960).
  • the uplink signal for the interference source When the uplink signal for the interference source is detected, information about the detected interference source is transmitted to the base station or the mobile communication system (S970) so that the base station or the mobile communication system changes the resource allocation for the interference source. After the resource allocation of the interference source is changed, signal detection and measurement are attempted for the target terminal (S980). If the interference source is not detected, the signal measurer continues to detect the interference source as well as the target terminal (S990).
  • 17 is a diagram illustrating an example of an implementation of a base station for implementing the operations of the present disclosure.
  • the base station of the present disclosure includes a control unit 1710 for controlling the overall operation of the base station, a downlink transmitter 1720 for transmitting a downlink signal, an uplink receiver 1730 for receiving an uplink signal, and information used for the operation of the base station. It may include a storage device 1740 for storing and the like and a communication device 1750 having a receiver and a transmitter.
  • the components shown in FIG. 17 are not essential to implementing a base station, so a base station described herein may have more or fewer components than those listed above.
  • the receiver of the communication device 1750 of the base station may receive interference generation information indicating that interference has occurred in the uplink signal of the target terminal from the signal measuring device or the location measuring server.
  • the controller 1710 of the base station may adjust uplink resource allocation of another terminal that caused interference in the uplink signal of the target terminal based on the interference occurrence information.
  • the transmitting unit and the receiving unit of the communication device 1750 are a transmitting unit and a receiving unit for communicating with a signal measuring device or a positioning server, and according to an example, a downlink transmitting unit 1720 and an uplink receiving unit for transmitting a signal to a mobile communication terminal ( 1730 may be included separately.
  • the receiver and the uplink receiver of the communication device 1750 may be operated or implemented by the same device, and the transmitter and the receiver link receiver of the communication device 1750 may be operated or implemented by the same device.
  • the transmitter and the receiver of the communication device 1750 may be a transmitter and a receiver of the communication device wired to the location measurement server.
  • the controller 1710 may change the frequency band of another terminal that caused interference in the frequency band assigned to the target terminal to a frequency band that does not cause interference to the frequency band assigned to the target terminal.
  • control unit 1710 transmits an uplink signal transmission time of another terminal that caused interference in the uplink signal transmission time allocated to the target terminal, and does not cause an interference in the uplink signal transmission time allocated to the target terminal. Can be changed.
  • the receiver of the communication device 1750 may receive a request signal for requesting information about another terminal capable of transmitting an uplink signal from an uplink resource of the target terminal from a signal measuring device or a location measuring server.
  • the base station transmits information about another terminal capable of transmitting an uplink signal in an uplink resource of the target terminal through the transmitting unit of the communication device 1750. Can be sent to the measurement server.
  • the receiver of the communication device 1750 may receive interference source information including identification information of another terminal from a signal measuring device or a location measuring server. Then, the controller 1710 may allocate an uplink resource of the other terminal as a resource that does not interfere with the uplink signal of the target terminal based on the identification information of the other terminal.
  • FIG. 10 is a flowchart illustrating an embodiment of an operation of a mobile communication base station or a mobile communication system according to an embodiment of the present disclosure.
  • the embodiment of FIG. 10 has described the operation of a mobile communication system with respect to an LTE system, it may operate similarly in other systems such as GSM and W-CDMA.
  • the base station determines a setting for uplink signal transmission of the target terminal (S1010).
  • the base station forms a link with the target terminal at the request of the signal measuring device or the location measuring server to allow the target terminal to transmit an uplink signal.
  • the base station determines whether the signal measuring device or the location measuring server requests information on the interference source (S1020).
  • the base station transmits the advance information on the interference source to the signal measuring device or the location measurement server (S1030).
  • the transmitting information may include an RNTI, an uplink spreading code, resource allocation information, a link parameter, etc. used by a terminal that may be an interference source.
  • the parameter transmitted in the above process may be set differently according to the communication system used by the target terminal.
  • the process of transmitting information on the interference source may be omitted, and thus the process is indicated by a dotted box.
  • the base station may receive information on the interference source detected by the signal measurer from the signal measurer or the location measurement server (S1040). If the signal measurer detects the interference source detected, the base station changes the resource allocation so that the interference source and the target terminal do not interfere with each other or reduce the interference (S1050). In this process, the frequency or time resources used by the interferer can be changed. When the change of resource allocation is changed, it is notified to the signal measuring instrument (S1060), and the signal of the target terminal can be detected in a new environment.
  • the mobile communication system may be configured such that the target terminal transmits a wideband PUSCH signal at regular time intervals or periodically. At this point, if other users do not transmit the PUSCH at the same time, interference from other users can be reduced.
  • the PUSCH may act as interference with respect to the PUSCH.
  • the PUCCH may not be transmitted when the target terminal transmits the PUSCH. That is, the transmission time of some PUCCHs may be left blank, and the target terminal alone may transmit the PUSCH at this time.
  • the signal measurer of the present disclosure can inform the information of the band used as the PUCCH and resource allocation to transmit only one PUSCH of the target terminal.
  • the signal measurer of the present disclosure may minimize the interference generated in the PUCCH by receiving an uplink signal by using a reception filter of a band narrower than the bandwidth of the system at the time when the target terminal transmits the PUSCH.
  • the uplink of the LTE system is composed of both end regions where a PUCCH is transmitted and a middle region where a PUSCH is transmitted.
  • the TTI in which the PUSCH is transmitted may be allocated by avoiding a TTI having resources allocated by random access.
  • the vertical axis of the upper half is time and the horizontal axis represents the frequency axis. It is divided into a PUCCH region and a PUSCH region, which are overall system bandwidths.
  • the uplink receiver is configured to receive the entire system bandwidth. That is the first reception bandwidth of the signal meter of FIG.
  • the mobile communication system delivers information on the area used for the PUCCH to the signal measurer.
  • the signal measurer of the present disclosure narrows the uplink reception bandwidth at the time when the target terminal transmits the wideband signal.
  • the second reception bandwidth of the signal measuring device of FIG. 11 is the reception bandwidth narrowed down.
  • the signal measuring instrument receives the received bandwidth after changing the reception bandwidth of the wide band again. That is, when the target terminal transmits the wideband PUSCH, the reception bandwidth is narrowed (into the second reception bandwidth of the signal measuring device) and received therein, and in the remaining periods, the reception bandwidth of the wide bandwidth (first reception bandwidth of the signal measuring device) is received. will be.
  • the uplink PUSCH transmission only one PUSCH may be transmitted at a time, but different channels may be simultaneously transmitted. That is, a certain amount of guard band is provided on the PUSCH signal, which is a channel transmitted by the target terminal for positioning, on the frequency axis, and resource allocation may be made so that other terminals do not transmit a signal to the guard band.
  • guard bands are configured on both sides of a PUSCH, which is an uplink channel transmitted by a target terminal for positioning.
  • the two guard bands may allocate the same amount of frequencies.
  • the base station configures the PUSCH signal transmitted by the target terminal
  • uplink resource allocation is not allocated to other terminals in the guard band around.
  • the guard band may be implemented to allow resource allocation to the target terminal.
  • the band allocates resources to other terminals.
  • the band allocable to the other user also includes the band allocated to the PUCCH.
  • the signal measurer measures an uplink signal of the target terminal with two different bandwidths as shown in FIG. In 12, the uplink bandwidth of the system corresponds to the uplink first reception bandwidth of FIG. Receives a PUSCH, which is an uplink signal transmitted by the target terminal, with a better uplink second reception bandwidth.
  • the signal measurer may set a bandwidth smaller than the bandwidth 3 of FIG. 12 as the uplink second reception bandwidth. That is, the uplink receiver including the analog filter is set as the second reception bandwidth to receive the uplink signal. In this way, an uplink signal received from another terminal can be minimized.
  • the bandwidth of the uplink signal receiver of the target terminal may be transmitted by making the bandwidth smaller than the bandwidth 3 and larger than the bandwidth 4.
  • the signal meter In order to efficiently design a signal meter, the signal meter needs to know the width information of the guard band.
  • the information may inform the signal meter at the base station of the mobile communication network. This allows the base station to inform the location measurement server, which can then inform the signal meter. Or, you can make an appointment in advance between the base station and the signal meter. Alternatively, the bandwidth information of several guard bands can be promised in advance, and one of them can be used.
  • the signal measuring unit may receive the radio by changing the reception bandwidth to a band of 5MHz when the target terminal transmits a wideband PUSCH. In the remaining section, the reception is performed with a bandwidth of 10 MHz.
  • the signal measurer may use a reception filter having a bandwidth narrower than the uplink bandwidth used among the bandwidths used by the LTE standard. For example, a bandwidth of 5 MHz in a 10 MHz bandwidth system and a bandwidth of 15 MHz in a 20 MHz bandwidth system are the second reception bandwidths. In this way, the signal can be measured without being affected by the interference generated from the PUCCH. In addition, interference occurring in the immediate uplink frequency band can be reduced.
  • the implementation of the signal meter can be complicated if the second reception bandwidth is given too many possibilities.
  • several possible bandwidths are defined in the uplink, and the system operates in one of these. If the value corresponding to the defined uplink bandwidth is set as the second reception bandwidth, the signal measuring device can be implemented without increasing the complexity.
  • the signal measurer may receive a signal of the target terminal at a second reception bandwidth, which is always a narrow bandwidth.
  • the target terminal since the target terminal may not normally receive the PUCCH or SRS transmitted, it may be more advantageous to vary the reception bandwidth according to the situation.
  • the signal measuring device of the present disclosure can inform the mobile communication network of the change of the reception bandwidth and set the bandwidth of the PUSCH allocated to the target terminal in consideration of this. That is, the target terminal transmits a signal having a smaller bandwidth through the PUSCH than when using the wide bandwidth of the first reception bandwidth.
  • the information on the reception bandwidth used by the signal measuring device may be informed to the mobile communication network so that the mobile communication network may adjust the PUSCH bandwidth in consideration of this, but the signal measuring device or the location measurement server may use the target terminal in the mobile communication network.
  • the bandwidth of the PUSCH may be directly requested to allow the mobile communication system to reflect this.
  • the signal measuring device of the present disclosure determines the interference and informs the location measuring server when it is necessary to adjust the reception bandwidth individually, so that the location measuring server informs the mobile communication network of the bandwidth adjustment based on this information, or A request may be made to adjust the PUSCH signal bandwidth of the target terminal.
  • FIG. 13 is a flowchart illustrating an embodiment of a change of an uplink bandwidth used by a signal measurer in the present disclosure.
  • the signal measurer receives information on which PUCCH is used from the mobile communication system (S1310). This process can be omitted, but it is possible to design the uplink receiving filter of the signal measurer more efficiently.
  • the signal measurer operates at the first reception bandwidth (S1320).
  • the first reception bandwidth refers to the LTE uplink bandwidth actually used by the target terminal.
  • the bandwidth may be interpreted as a bandwidth used by a receiver of a base station to receive an LTE uplink signal of one band.
  • the signal measurer determines whether the target terminal transmits a wideband PUSCH for positioning (S1330). If it is not determined that the target terminal transmits the wideband PUSCH, the signal measurer receives a signal with a first reception bandwidth that has been operating. However, if it is determined that the target terminal transmits the wideband PUSCH, the signal measurer operates with the second reception bandwidth, which is a band narrower than the first reception bandwidth (S1340). After the target terminal finishes the PUSCH transmission for positioning, the target terminal again adjusts the reception bandwidth to the first reception bandwidth. Although the case in which the target terminal sets the PUSCH transmitted for positioning to the wide band has been described, it is understood that the position of the target terminal can be measured even when the narrow band PUSCH is used.
  • a terminal may transmit a PUCCH or SRS in uplink.
  • the position meter may measure the position of the target terminal using the channels.
  • multiple terminals may transmit signals using different codes for the same frequency and time resources.
  • the other terminals transmit signals to uplink resources used by the target terminal with different codes, it may be difficult for the position detector to properly detect and measure the signal of the target terminal due to interference.
  • the target terminal does not allocate the same uplink resource to other terminals to the resource of the SRS or PUCCH to which a signal is transmitted. That is, other terminals do not transmit signals at the time and frequency at which the target terminal transmits the SRS or the PUCCH. In this way, the target terminal signal detection and measurement performance of the position measuring device can be improved.
  • the target terminal may allow a resource of another terminal to be allocated to a resource transmitting SRS or PUCCH, but allow the target terminal to transmit an uplink signal of the other terminal whose interference is determined to be less affected.
  • This can be used when the other terminal is far from the position meter or the target terminal.
  • the base station determines the approximate position of the target terminal or positioner and determines whether the interference is small because the other terminal is far from the position. When the base station determines that the influence of the uplink interference of the other terminal is small, it allocates the SRS or PUCCH resources used by the target terminal to the other terminal.
  • the base station may use the position estimation value of the other terminal and the position measurement value of the target terminal.
  • the position value of the position of the target terminal and the position measuring device may be received from the position measuring server and utilized.
  • RSRP, RSRQ downlink channel states
  • neighbor base station measurement results of the terminal may be used.
  • uplink transmission power information of the terminal may be used.
  • the interference source may be removed from the corresponding uplink frequency or the resource allocation may be changed to easily detect the uplink signal of the target terminal.
  • a situation may arise in which it is difficult to control the interference by the above method.
  • another method is proposed to control the interference of the uplink frequency.
  • the method proposed in the present disclosure is to instruct to move the terminals existing in the same cell using the frequency to another frequency. This is applicable to all or some terminals in the active state.
  • the active state refers to a state in which voice and data are exchanged with a base station.
  • the terminal in the standby state may be determined as a potential interference source to move to another frequency.
  • the terminal determined to be in the vicinity of the target terminal may be instructed to selectively move to another frequency band.
  • the first possible method is to transfer some of the activated terminals in the frequency to another frequency for service. This may be performed by the terminal of the present disclosure does not report to the interference source.
  • the terminal of the present disclosure does not report to the interference source.
  • only terminals satisfying a specific condition may move to different frequencies. This is done by changing the service frequency of the activated terminal.
  • the characteristic condition may indicate a frequency shift to the terminal when the measured value of the downlink channel state, RSRP, RSRQ, etc. is in a certain range.
  • the terminal which is determined to be or may be around the target terminal may be moved to another frequency.
  • the mobile communication base station may report the downlink channel status, location information, etc.
  • the base station can command the frequency shift only when a predetermined condition is satisfied based on the transmission output value of the terminal.
  • a terminal transmitting uplink data at a specific frequency or data rate or more may be moved to another frequency.
  • some or all of the activated terminals are periodically stopped to transmit a corresponding frequency for a short time, and during this time, an uplink signal of the target terminal is transmitted.
  • the base station instructs some or all of the activated terminals to periodically move to a frequency other than the current serviced frequency for a predetermined short time, during which the target terminals transmit an uplink signal. do. After the predetermined short time, terminals that have moved to other frequencies may return to their original frequencies to perform normal communication.
  • An embodiment of a method for doing this is Inter Frequency Search.
  • the base station When the base station commands the Inter Frequency search, the UEs receiving the command perform an operation of searching for another frequency at the time when the instruction is received, and thus the transmission of the uplink is temporarily stopped.
  • the base station instructs some or all of the terminals activated in the same cell in the frequency band used by the target terminal to perform an inter frequency search.
  • some terminals satisfying a specific condition may be selected to perform an inter frequency search.
  • the characteristic condition may be that the measured values of the downlink channel state, RSRP, RSRQ, etc. are in a certain range.
  • the terminal determined to be in the vicinity of the target terminal may command an inter frequency search.
  • the mobile communication base station reports the downlink channel status, location information, etc.
  • the terminals selects the terminal determined to be near the target terminal based on the received report, and performs the inter frequency search for the terminal.
  • the inter-frequency search may be performed only when a predetermined condition is satisfied based on the transmission output value of the terminal.
  • a terminal for transmitting uplink data at a specific frequency or data rate or more may be selected.
  • the terminals are set to perform other frequency searching at the same time.
  • the search period is also set to be the same so that time for searching by moving various terminals to different frequencies is overlapped.
  • the uplink signal is transmitted to the target terminal at this time.
  • the signal transmitted by the target terminal may be set to be a wideband signal so as to measure an accurate time delay.
  • the activated terminals are set to not transmit the uplink for a predetermined time by using the inter-frequency search, and the target terminal transmits the uplink signal in the time interval, thereby enabling the target terminal to You can let the signal meter measure the signal.
  • it may be extended to the terminal in the standby state to prevent the uplink transmission. That is, the terminal in the standby state can also transmit random access, so that the terminal in the standby state does not transmit the uplink signal for a predetermined time, the time that the active terminals perform the inter-frequency search Can be nested with
  • FIG. 14 illustrates a time at which other terminals activated in the present disclosure perform an inter frequency search and a method in which a target terminal transmits an uplink signal.
  • a process in which an activated interfering source or potential probing sources perform inter frequency search at the same time and a target terminal transmits a signal during this time is illustrated.
  • all of the activated terminals having the possibility of interference sources are set to perform inter frequency search at the same time.
  • the embodiment of FIG. 14 illustrates a case in which terminals having possible N interference sources are set to perform inter frequency search.
  • a part or all of the activated terminals in the cell and the frequency band to which the target terminal belongs are set for inter frequency search.
  • the terminal having the possibility of all interference sources is set to perform the inter frequency search for the same time at the same time.
  • This inter frequency search is one embodiment of a method for preventing a terminal from transmitting an uplink signal during this time. It is possible to set up the target terminal to transmit an uplink signal for positioning at the time by using another similar method to stop the uplink transmission to the activated terminals for one or more predetermined time. . Several terminals stop transmitting uplink signals at the same time, and the positioning is more efficient by setting the stopping time interval to be the same time interval.
  • 14 illustrates a method of setting uplink transmission when there are several target terminals.
  • 14 illustrates a case in which three target terminals are configured to transmit a wideband signal in a time division manner during one inter frequency search period. That is, the target terminal transmits a signal during a time when the terminal having a potential of interference interferes with the transmission of the uplink signal.
  • the location of a plurality of target terminals is to be measured, it is proposed to transmit at different times in order to minimize interference between signals transmitted by the target terminals.
  • FIG. 15 shows another embodiment of a signal transmission method of a target terminal considered in the present disclosure.
  • the embodiment of FIG. 15 is almost similar to FIG. 14.
  • target terminals when activated terminals having a possibility of interference source perform an interval (ie, inter frequency search) in which uplink signal transmission is stopped, target terminals transmit a signal in an FDM manner. This increases the time that each target terminal transmits a signal, so that detection is possible at a long distance.
  • FIG. 15 it can be seen that different target terminals transmit an uplink signal in different frequency bands.
  • target terminals can be configured to transmit broadband signals in the CDM manner.
  • the signal measurer of the present disclosure may measure the position of the target terminal by measuring the signal of the target terminal.
  • the signal measurer of the present disclosure measures signals of the target terminals during a period transmitted by the target terminal.
  • signals from multiple target terminals need to be measured, signals from multiple terminals are respectively measured.
  • the mobile communication system or the location measurement server of the present disclosure transmits the information to the signal measuring device about the interval at which the activated terminals that may be the interference source stop the signal transmission (that is, the interval during which the inter frequency search is performed). This may be directly transmitted by the mobile communication base station to the signal measuring device, but the base station may inform the location measuring server and the location measuring server may deliver it to the signal measuring device.
  • the signal measuring device of the present disclosure that receives the information performs an operation of a receiver including an AGC operation in consideration of the surrounding activated terminals stopping the signal transmission.
  • the mobile communication base station and the signal measuring device of the present invention can perform the operation at a predetermined time and period.
  • the transmission method and parameters of the signal transmitted by the target terminal may be performed in advance between the base station and the signal measuring device.
  • the signal measuring unit of the present disclosure receives the information of the PDCCH, which is a downlink channel that the base station allocates resources to the target terminal to detect the signal of the target terminal; Can be.
  • the signal measurer may receive information of the PDSCH, which is a downlink data channel.
  • the signal measuring unit receiving this information detects uplink signals of the target terminals based on the information of the PDCCH.
  • the mobile communication base station or location measurement server transmits the information to the signal measuring device of the present disclosure in advance.
  • the base station may transmit the information directly to the signal measuring device, the base station may transmit to the positioning server and the positioning server may transmit to the measuring device.
  • the signal measurer of the present disclosure can detect a signal of the target terminal.
  • the signal measurer of the present disclosure can detect the PDCCH without receiving uplink resource allocation information of the target terminal.
  • the uplink resource allocation information and the information about the inter-frequency search may be performed in advance between the base station and the signal measuring device of the present invention.
  • a communication device including a downlink signal receiver and at least one uplink signal receiver, wherein the downlink signal receiver acquires time synchronization of the base station and acquires uplink resource allocation information of the target terminal. Based on the presence or absence of the uplink signal transmitted by the terminal to the base station, the apparatus for determining the presence and location information of the target terminal can improve the reception performance of the uplink transmitted by the target terminal.
  • the present disclosure can be widely applied to a signal measurer including only an uplink receiver to detect a signal of a target terminal.
  • the present disclosure there is a possibility of acquiring information of a terminal capable of operating or operating as an interference source in an uplink of a target terminal and informing the mobile communication system of the information, and uplink resources and interference sources allocated to the target terminal based on the information.
  • the terminal may be configured to communicate with different uplink resources to reduce interference of the uplink signal of the target terminal.
  • the base station may reduce the uplink interference of the target terminal by setting up a frequency band used by the target terminal and a terminal operable as an interference source to communicate using different uplink frequency bands.
  • the uplink reception bandwidth of the signal measuring device is set differently from the bandwidth of the uplink signal so that the signal transmitted by the target terminal can be better detected.
  • the operation may be performed by changing the reception bandwidth only when the target terminal transmits a predetermined measurement uplink signal.
  • the target terminal it is possible to reduce the uplink interference of the target terminal by preventing the uplink signal from being transmitted for a certain period by performing an inter-frequency search for a part or all of the potential or activated terminals at a specific time.
  • the target terminal is set to transmit an uplink signal for positioning, and the signal measurer performs measurement based on the signal.
  • system generally refer to computer-related entity hardware, a combination of hardware and software, May mean software or running software.
  • the foregoing 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.
  • an application running on a controller or processor and a controller or processor can be components.
  • One or more components may be within a process and / or thread of execution and a component may be located on one system or deployed on more than one system.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif d'acquisition d'informations d'emplacement d'un terminal au moyen d'un système de communication sans fil. Un dispositif de mesure de signal comprend : une unité d'acquisition d'informations pour acquérir au moins l'un parmi un signal de liaison montante d'un terminal cible, ou des informations d'identification d'un terminal qui est potentiellement une source d'interférence dans la transmission du signal de liaison montante ; une unité de communication capable de communiquer avec une station de base ou un serveur de mesure d'emplacement ; et une unité de commande pour, sur la base du signal de liaison montante, générer des informations sur l'occurrence d'une interférence sur le signal de liaison montante du terminal cible, ou générer des informations de source d'interférence comprenant les informations d'identification du terminal qui est potentiellement une source d'interférence.
PCT/KR2019/010591 2018-08-20 2019-08-20 Procédé et dispositif de contrôle d'interférence en liaison montante de dispositif de collecte d'informations de terminal dans un système de communication sans fil WO2020040531A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19852418.3A EP3843485A4 (fr) 2018-08-20 2019-08-20 Procédé et dispositif de contrôle d'interférence en liaison montante de dispositif de collecte d'informations de terminal dans un système de communication sans fil
US17/269,297 US20210185636A1 (en) 2018-08-20 2019-08-20 Method and device for controlling uplink interference of terminal information-collecting device in wireless communication system
CN201980054819.7A CN112602364A (zh) 2018-08-20 2019-08-20 无线通信系统中终端信息收集设备的上行链路干扰的控制方法和设备

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR10-2018-0096679 2018-08-20
KR20180096679 2018-08-20
KR20180114866 2018-09-27
KR10-2018-0114866 2018-09-27
KR10-2019-0101424 2019-08-19
KR1020190101424A KR102273913B1 (ko) 2018-08-20 2019-08-19 무선통신 시스템에서 단말 정보 수집장치의 상향링크 간섭제어 방법 및 장치

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WO2020040531A1 true WO2020040531A1 (fr) 2020-02-27

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KR20180046139A (ko) 2016-10-27 2018-05-08 삼성전자주식회사 배터리 관리 방법, 장치, 및 시스템
KR20180054836A (ko) 2015-09-25 2018-05-24 퀄컴 인코포레이티드 어그리게이팅된 mmu(memory management unit)들을 사용한 메모리 관리 기능성의 제공

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KR20180046139A (ko) 2016-10-27 2018-05-08 삼성전자주식회사 배터리 관리 방법, 장치, 및 시스템

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