Base station positioning device

Abstract

To allow a base station positioning device such as an LMF to perform base station positioning reliably.SOLUTION: In an LMF 100, an acquisition unit 101 receives NCGI (identification information) on a gNB 150 (base station) where a terminal 400 designated is located, according to a request from the outside (LCS-Client 300). Then, a determination unit 102 determines support information about measurement information acquisition at the gNB 150 based on the NCGI. A request unit 104 requests the RSRP / RSRQ and TA (measurement information) of the terminal 400 based on a result of the determination by the determination unit 102, and obtains the RSRP and the like. A calculation unit 105 calculates location information on the terminal 400 based on the RSRP and the like of the terminal 400.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a base station positioning device.

Background Art

[0002] An LMF (Location Management Function) that functions as a base station positioning device makes an inquiry about the presence status of a terminal to a gNB (next Generation NodeB) according to a request from an LCS-client (LoCation Service Client), which is a server device that provides services using location management, and calculates an estimated coordinate of the terminal based on that information. There are a plurality of information (RSRP / RSRQ, TA) as terminal information, and this LMF uses a plurality of calculation methods using these plurality of information in order to calculate a more accurate estimated coordinate. This inquiry process is defined in 3GPP TS38.445.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, depending on the gNB, there may be cases where it is unable to return the information to be inquired about. In that case, a Failure is returned for the inquiry, and in the LMF, base station positioning cannot be performed.

[0005] Therefore, in order to solve the above problems, it is an object to enable reliable base station positioning in a base station positioning device such as an LMF.

Means for Solving the Problems

[0006] The base station positioning device of the present invention comprises: an acquisition unit that acquires identification information of a base station where a specified terminal is located in accordance with an external request; a determination unit that determines corresponding information regarding the acquisition of measurement information at the base station based on the identification information; a request unit that requests measurement information for the terminal based on the determination result by the determination unit; and a calculation unit that calculates the location information of the terminal based on the measurement information of the terminal. [Effects of the Invention]

[0007] According to the present invention, base station positioning can be reliably performed. [Brief explanation of the drawing]

[0008] [Figure 1] This is a system configuration diagram showing the configuration of the communication system including the LMF100 in this disclosure. [Figure 2] This is a diagram illustrating the operation of the communication system. [Figure 3] This diagram shows the functional configuration of the LMF100 as disclosed herein. [Figure 4] This figure shows a specific example of correspondence table 103. [Figure 5] This is a flowchart showing the operation of the LMF100. [Figure 6] This is a diagram showing the processing sequence of a communication system. [Figure 7] This figure shows an example of the hardware configuration of the LMF100 according to one embodiment of the present disclosure. [Modes for carrying out the invention]

[0009] Embodiments of this disclosure will be described with reference to the attached drawings. Where possible, the same parts will be denoted by the same reference numerals, and redundant descriptions will be omitted.

[0010] Figure 1 is a system configuration diagram showing the configuration of a communication system including the LMF100 in this disclosure. As shown in the figure, this communication system is composed of the LMF100, AMF200, LCS-Client, gNB150a, and gNB150b. Terminal 400 can communicate with LCS-Client 300 by accessing gNB150a or 150b, etc.

[0011] The LMF100 is a device that functions as a base station positioning device for base station positioning in a 5G core network.

[0012] The AMF200 is a device that controls access and mobility in a 5G core network. In this disclosure, the LMF100 transmits position information to the LSC-Client300.

[0013] The LCS-Client300 is an external service server that requests and obtains location information for any terminal 400. The LCS-Client300 provides services to terminal 400 based on the location information of terminal 400 obtained by the LMF100.

[0014] gNB150a and gNB150b are base stations that communicate wirelessly with terminal 400. In this disclosure, gNB150a has the function of acquiring RSRP / RSRQ and TA measured at terminal 400, while gNB150b has the function of acquiring only RSRP and TA from terminal 400. RSRP / RSRQ and TA are abbreviations for Timing Advance (TA), Reference Signal Received Power (RSRP), and Reference Signal Received Quality (RSRQ), respectively. The measurement information that can be acquired differs depending on the type of gNB or the vendor that provides it.

[0015] Next, the general operation of this communication system will be described. FIG. 2 is a diagram showing the general operation. In advance, the LMF100 stores the corresponding ECID (Enhanced Cell-ID (positioning method)) support information for each gNB in a table (step1). In the present disclosure, ECID indicates a method of positioning using information obtained at a terminal or a base station. The LCS-Client300 requests the position information of an arbitrary terminal 400 from the AMF200 (step2).

[0016] The AMF200 manages the presence information of the terminal 400 and notifies the LMF100 of the NCGI (NR Cell Global Identity) of one gNB150a (or 150b) where the terminal 400 is present (step4). The NCGI is an identifier of the gNB150.

[0017] The LMF100 determines the type of gNB for which positioning is requested by referring to the table from the notified NCGI. Then, the LMF100 refers to the ECID support information and inquires each corresponding support information to one gNB150 where the terminal 400 is present (stepstep4). That is, since the LMF100 corresponds to RSRP / RSRQ and TA for the gNB150a, it inquires all of RSRP / RSRQ and TA. Since the LMF100 corresponds to RSRP / RSRQ for the gNB150b, it inquires RSRP / RSRQ.

[0018] The gNB150a and gNB150b obtain measurement information from the terminal 400 (step5a, step5b). The gNB150a obtains RSRP / RSRQ and TA, and the gNB150b obtains RSRP / RSRQ.

[0019] The gNB150a or gNB150b transmits the measurement information to the LMF100 (step6). The gNB150a transmits the measurement information including RSRP / RSRQ and TA, and the gNB150b transmits the measurement information including RSRP / RSRQ.

[0020] Based on the acquired measurement information, the LMF100 calculates the estimated coordinates of the terminal 400 (step 7). Then, the LMF100 notifies the positioning result to the LCS-Client 300 (step 8).

[0021] In this way, the LMF100 enables base station positioning and can notify the LCS-Client 300 of the location information of the terminal 400.

[0022] Next, the LMF100 will be described. FIG. 3 is a diagram showing the functional configuration of the LMF100 of the present disclosure. As shown in the figure, the LMF100 includes an acquisition unit 101, a determination unit 102, a correspondence table 103, a request unit 104, a calculation unit 105, and a transmission unit 106.

[0023] The acquisition unit 101 is a part that acquires the identification information of the base station where the specified terminal is located. Specifically, the acquisition unit 101 acquires the identification information by receiving the NCGI of one base station where the terminal 400 is located, which is transmitted from the AMF 200.

[0024] The determination unit 102 is a part that identifies the gNB 150 based on the acquired NCGI and determines the support information regarding the acquisition of measurement information in the gNB 150. That is, the determination unit 102 refers to the correspondence table 103 and determines the support information indicating the measurement information supported by the gNB 150 indicated by the NCGI.

[0025] The correspondence table 103 is a table that stores the correspondence between the gNB type and the ECID support information for each NCGI. FIG. 4 is a diagram showing a specific example of the correspondence table 103. FIG. 4(a) shows the correspondence table 103 with the ECID support information associated, and FIG. 4(b) shows the correspondence table 103 in its modified example.

[0026] In Figure 4(a), the correspondence table 103 is applied by associating NCGI, gNB type, and ECID support information. In this disclosure, ECID support information is indicated by ○ / × for support in RSRP / RSRQ and TA, respectively.

[0027] In Figure 4(b), pattern information is shown instead of ECID support information. This pattern information indicates the combination of ECID support. Figure 4(c) shows the pattern information and the combination of ECID support. As shown in Figure 4(b), by storing all patterns of the corresponding measurement information, even if there are changes to the corresponding measurement information, the table can be updated simply by selecting the pattern.

[0028] Alternatively, Figure 4(a) can be created by comparing Figure 4(b) and Figure 4(c). In this case, the correspondence between NCGI and ECID support information can be determined, and the corresponding ECID support information can be requested based on the NCGI from AMF200.

[0029] In this disclosure, gNB types are defined in correspondence table 103. Generally, the number of gNBs is quite large, exceeding 100,000, and managing them by gNB type can reduce operational workload. In other words, support information only needs to be managed for each gNB type, which simplifies management.

[0030] The request unit 104 is responsible for querying the gNB 150 where the terminal 400 is located for measurement information based on the determination result from the determination unit 102.

[0031] The calculation unit 105 is responsible for calculating the location information of the terminal 400 based on the measurement information obtained by the request unit 104 through inquiry.

[0032] The transmission unit 106 is the part that transmits the calculated location information to the LCS-Client 300.

[0033] Next, the operation of the LMF100 configured in this way will be explained. Figure 5 is a flowchart of its operation. The acquisition unit 101 receives NCGIs of gNBs 150a and 150b from the AMF200 (S101). The determination unit 102 identifies the gNB requesting positioning by referring to the correspondence table 103 based on the NCGIs and determines the type of gNB (S102). Then, the determination unit 102 refers to the ECID support information corresponding to the gNB type from the correspondence table 103 (S103).

[0034] The determination unit 102 determines whether RSRP / RSRQ and TA are supported in the referenced gNB150 (S104-S106). If the determination unit 102 determines that all are supported (S104-S106: YES), the request unit 104 queries the gNB150 for RSRP / RSRQ and TA and requests them (S107).

[0035] Furthermore, if the determination unit 102 determines that RSRP / RSRQ is supported but TA is not (S104, S105: YES, S106: NO), the request unit 104 queries the gNB150 for RSRP / RSRQ and requests it (S108).

[0036] Furthermore, if the determination unit 102 determines that RSRP and TA are supported but RSRQ is not (S104, S109: YES, S105: NO), the request unit 104 queries the gNB150 for RSRP and TA and requests them (S110).

[0037] Furthermore, if the determination unit 102 determines that RSRP is supported but RSRQ and TA are not supported (S104: YES, S105, S109: NO), the request unit 104 queries the gNB150 for RSRP and requests it (S111).

[0038] Furthermore, if the determination unit 102 determines that RSRQ and TA are supported but RSRP is not (S104: NO, S112, S113: YES), the request unit 104 queries the gNB150 for RSRQ and TA and requests them (S114).

[0039] Furthermore, if the determination unit 102 determines that RSRQ is supported but RSRP and TA are not (S104, S113: NO, S112: YES), the request unit 104 queries the gNB150 for RSRQ and requests it (S115).

[0040] Furthermore, if the determination unit 102 determines that TA is supported but RSRP / RSRQ is not (S104, S112: NO, S116: YES), the request unit 104 queries the gNB150 for TA and requests it (S117).

[0041] Furthermore, if none of the conditions are met (S104, S112, S116: NO), the determination unit 102 does not request RSRP / RSRQ and TA from the gNB150 (S118).

[0042] Next, the processing sequence of the communication system of this disclosure will be described. Figure 6 is a diagram showing the processing sequence. As shown in the figure, the LCS-Client 300 sends a location information request for any terminal 400 to the AMF 200 (S201). The AMF 200 notifies the LMF 100 of the NCGI of gNB 150, which is one base station in the area where terminal 400 is located (S202).

[0043] In the LMF100, one gNB150 requested for measurement is identified based on its location information (S203). Then, the LMF100 determines the ECID support information corresponding to the gNB150 (S204). Then, the LMF100 transmits the corresponding measurement information to the gNB150 according to the ECID support information (S205).

[0044] When measurement information is requested in the gNB150, it obtains the corresponding measurement information from the terminal 400 (S206). Then, the gNB150 notifies the LMF100 of the measurement information from the terminal 400 (S207).

[0045] The LMF100 performs base station positioning calculations (S208) and notifies the AMF200 of its location information (S209).

[0046] In AMF200, location information is notified to LCS-Client300.

[0047] In LCS-Client300, services utilizing the location information of terminal 400 can be provided to said terminal 400.

[0048] Next, the operation and effects of the LMF100, which functions as a base station measurement device in this disclosure, will be explained. In the LMF100, the acquisition unit 101 receives the NCGI (identification information) of the gNB150 (base station) where the designated terminal 400 is located, in accordance with a request from an external source (LCS-Client300). The determination unit 102 then determines the support information for acquiring measurement information at the gNB150 based on the NCGI. The request unit 104 requests the RSRP / RSRQ and TA (measurement information) of the terminal 400 based on the determination result by the determination unit 102, and acquires the RSRP, etc. The calculation unit 105 calculates the location information of the terminal 400 based on the RSRP, etc. of the terminal 400.

[0049] This configuration allows for the determination of support information corresponding to the gNB150, and enables the request of measurement information such as RSRP based on that information. Since the types of measurement information supported differ depending on the type of gNB150, this configuration ensures that the appropriate information can be obtained.

[0050] Furthermore, in this disclosure, the AMF200, which is a server that manages the location of terminal 400, sets the NCGI of the gNB150 where terminal 400 is located to LMF100 in accordance with a request from the LCS-Client300, which is a service server that provides location-based services. The acquisition unit 101 of LMF100 then receives the NCGI transmitted from AMF200, thereby enabling LMF100 to acquire the NCGI, which is the identification information of gNB150, and to request measurement information from terminal 400.

[0051] In this disclosure, LMF100 includes a table that associates the NCGI of gNB150 with the support information of said gNB150. The determination unit 102 determines the support information of gNB150 acquired by the acquisition unit 101 based on the information stored in the correspondence table 103.

[0052] This allows us to determine what kind of measurement information the gNB150 supports using the correspondence table 103.

[0053] Furthermore, in this disclosure, the request unit 104 requests measurement information such as RSRP that can be obtained from the gNB150 based on the determination result.

[0054] This allows for the request of appropriate measurement information without specifying unsupported measurement information.

[0055] Furthermore, in this disclosure, the measurement information refers to multiple pieces of information relating to radio waves between the gNB150 and the terminal 400, such as RSRP / RSRQ and TA. It does not necessarily have to be three pieces of information, but includes at least one.

[0056] In this disclosure, the support information may be a combination pattern of RSRP / RSRQ and TA between the terminal 400 and the base station, which can be obtained from the gNB150.

[0057] In this disclosure, the support information that gNB150 provides regarding radio wave information is indicated as whether or not it supports RSRP / RSRQ and TA. However, this may be replaced by the type of gNB150. In that case, it would be necessary to further associate and manage support information for each type of gNB150.

[0058] In that sense, in this disclosure, support information or gNB type may be managed for each gNB150 as support information indicating the support status, and the determination unit 102 may determine to what extent the gNB150 is capable of acquiring information related to radio waves based on that support information.

[0059] The communication system disclosed herein includes an LMF100, an AMF200 which is a control device that controls the mobility of a terminal 400, and a gNB150 which communicates wirelessly with the terminal 400. When the AMF200 receives a location positioning request for the terminal 400 from the LCS-Client300, it transmits the NCGI of the gNB150 where the terminal 400 is located to the LMF100.

[0060] The LMF100 obtains measurement information from the gNB150 based on the determination result regarding the gNB150's correspondence information (support information or gNB type) indicated in the transmitted NCGI. Then, the LMF100 performs base station positioning based on the measurement information.

[0061] In this disclosure, the LMF100 requests measurement information from one main gNB150 located within its service area. If multiple gNB150s are located within the service area of ​​terminal 400, terminal 400 transmits measurement information to the main gNB150. The main gNB150 is, for example, the gNB150 with the strongest signal for terminal 400. The gNB150 then sends the measurement information to the AMF200, which in turn transmits the gNB150NCGI and the measurement information to the LMF100. The LMF100 then calculates location information based on the acquired measurement information.

[0062] The LMF100 functioning as a base station positioning device and the communication system equipped therewith have the following configuration.

[0063] [1] An acquisition unit that acquires identification information of the base station where a specified terminal is located, in accordance with an external request, A determination unit that determines corresponding information regarding the acquisition of measurement information at the base station based on the aforementioned identification information, A request unit that requests measurement information from the terminal based on the determination result from the determination unit, A calculation unit that calculates the location information of the terminal based on the measurement information of the terminal, A base station positioning device equipped with the following features.

[0064] [2] The system includes a table that associates base station identification information with the corresponding base station information. The determination unit determines the corresponding base station information acquired by the acquisition unit based on the information stored in the table. [1] The base station positioning device described above.

[0065] [3] The request unit, based on the determination result, specifies the measurement information that can be obtained from the base station and requests the said measurement information. [1] Base station positioning device according to claim 1 or [2]2.

[0066] [4] The measurement information acquires multiple pieces of information regarding radio waves between the base station and the terminal. A base station positioning device as described in any one of [1] to [3].

[0067] [5] The aforementioned correspondence information is support information indicating support for information for base station positioning. A base station positioning device as described in any one of [1] to [4].

[0068] [6] The support information includes at least one of the following, obtainable from the base station: radio wave strength, radio wave quality, and radio wave arrival time between the terminal and the base station. [5] The base station positioning device described below.

[0069] [7] The aforementioned support information is a support pattern that indicates a combination of radio wave strength, radio wave quality, and radio wave arrival time between the terminal and the base station, which can be obtained from the base station. [5] The base station positioning device described below.

[0070] [8] The aforementioned correspondence information is the type information of the base station. A base station positioning device as described in any one of [1] to [4].

[0071] [9] The aforementioned correspondence information further associates support information with the base station type information. The determination unit determines type information based on the identification information, and further determines support information based on the identification information. [8] The base station positioning device according to claim 8.

[0072]

[10] A base station positioning device as described in any one of [1] to [9], A control device that controls the mobility of the terminal, A base station that communicates wirelessly with the aforementioned terminal, In a communication system including, When the control device receives a terminal location positioning request from an external source, it transmits identification information of the base station where the terminal is located to the base station positioning device. The base station positioning device acquires measurement information from the base station based on the determination result regarding the base station correspondence information indicated by the transmitted identification information. The base station positioning device performs base station positioning based on the measurement information. Communication system.

[0073] The block diagram used in the description of the above embodiment shows functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may be realized by combining the above one device or the above multiple devices with software.

[0074] Functions include, but are not limited to, judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, assumption, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission is called a transmitting unit or transmitter. As mentioned above, the method of implementation is not particularly limited.

[0075] For example, the LMF100 in one embodiment of the present disclosure may function as a computer that processes the base station positioning method of the present disclosure. Figure 7 is a diagram showing an example of the hardware configuration of the LMF100 according to one embodiment of the present disclosure. The LMF100 described above may be physically configured as a computer device including a processor 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0076] In the following explanation, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware configuration of the LMF100 may include one or more of the devices shown in the diagram, or it may be configured to omit some of the devices.

[0077] Each function in the LMF100 is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, which allows the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of data reading and writing in the memory 1002 and storage 1003.

[0078] The processor 1001 controls the entire computer, for example, by running the operating system. The processor 1001 may be composed of a central processing unit (CPU) that includes interfaces with peripheral devices, control devices, arithmetic units, registers, etc. For example, the determination unit 102 and calculation unit 105 described above may be implemented by the processor 1001.

[0079] Furthermore, the processor 1001 reads programs (program code), software modules, data, etc., from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. For example, the determination unit 102 and the calculation unit 105 may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and other functional blocks may be implemented similarly. The above-described processes have been explained as being executed by one processor 1001, but they may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The program may also be transmitted from a network via a telecommunications line.

[0080] Memory 1002 is a computer-readable recording medium and may consist of at least one of the following: ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. Memory 1002 may also be called a register, cache, main memory, etc. Memory 1002 can store executable programs (program code), software modules, etc., for carrying out a base station positioning method according to one embodiment of the present disclosure.

[0081] Storage 1003 is a computer-readable recording medium and may consist of at least one of the following: an optical disc such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disc, a digital multipurpose disc, a Blu-ray® disc), a smart card, flash memory (e.g., a card, a stick, a key drive), a floppy® disk, a magnetic strip, etc. Storage 1003 may also be called an auxiliary storage device. The above-mentioned storage medium may be, for example, a database, server, or other suitable medium including at least one of memory 1002 and storage 1003.

[0082] The communication device 1004 is hardware (transmitting / receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc. The communication device 1004 may be configured to include high-frequency switches, duplexers, filters, frequency synthesizers, etc., in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the acquisition unit 101, request unit 104 and transmission unit 106 described above may be implemented by the communication device 1004. The acquisition unit 101, request unit 104 and transmission unit 106 may be implemented in physically or logically separate implementations as a transmission unit and a reception unit, or they may be implemented as an integrated implementation.

[0083] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, LED lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0084] Furthermore, each device, such as the processor 1001 and memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for each device.

[0085] Furthermore, the LMF100 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array), and some or all of each functional block may be realized by such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0086] Information notification is not limited to the embodiments described herein and may be carried out by other means. For example, information notification may be carried out by physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information (MIB (Master Information Block), SIB (System Information Block))), other signals, or combinations thereof. RRC signaling may also be called RRC messages, and may be, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc.

[0087] The processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described herein may be reordered, provided they are consistent with each other. For example, the methods described herein present various step elements in an exemplary order and are not limited to that specific order.

[0088] Input and output information may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information may be overwritten, updated, or appended to. Output information may be deleted. Input information may be transmitted to other devices.

[0089] The determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (true or false), or by a numerical comparison (for example, a comparison with a predetermined value).

[0090] Each aspect / embodiment described herein may be used individually, in combination, or switched between as needed during implementation. Furthermore, notification of specific information (e.g., notification that "X is") is not limited to explicit notification, but may also be implicit (e.g., by not providing such notification).

[0091] Although the present disclosure has been described in detail above, it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the intent and scope of the present disclosure as defined by the claims. Accordingly, the descriptions in the present disclosure are illustrative and not intended to be restrictive in any way.

[0092] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0093] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, fiber optic cable, twisted pair, or digital subscriber line (DSL)) and wireless technologies (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0094] The information, signals, etc. described in this disclosure may be represented using any of the various different techniques. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0095] In addition, terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of the channel and symbol may be a signal (signaling). Also, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, cell, frequency carrier, etc.

[0096] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a given value, or other corresponding information. For example, wireless resources may be indicated by an index.

[0097] The names used for the parameters described above are not restrictive in any way. Furthermore, the formulas and other expressions using these parameters may differ from those expressly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

[0098] In this disclosure, terms such as "base station (BS)", "wireless base station", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission / reception point", "cell", "sector", "cell group", "carrier", and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0099] A base station can house one or more (e.g., three) cells. If a base station houses multiple cells, the entire coverage area of ​​the base station can be divided into several smaller areas, each of which may also be provided with communication services by a base station subsystem (e.g., a Remote Radio Head (RRH)). The terms “cell” or “sector” refer to part or all of the coverage area of ​​at least one of the base station and / or base station subsystems that provide communication services in that coverage.

[0100] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0101] A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other appropriate term.

[0102] As used in this disclosure, the terms “determining” and “determining” may encompass a wide variety of actions. “Determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, or inquiring (e.g., searching in a table, database, or other data structure), or ascertaining. “Determining” may also include, for example, receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, or accessing (e.g., accessing data in memory). Furthermore, "judgment" and "decision" can include considering something as having been "judged" or "decided" after resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment" and "decision" can include considering something as having been "judged" or "decided" after some action. Also, "judgment (decision)" can be reinterpreted as "assuming," "expecting," or "considering."

[0103] The terms “connected,” “coupled,” or any variation thereof, mean any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be reinterpreted as “access.” As used in this disclosure, two elements may be considered to be “connected” or “coupled” with each other using at least one of one or more wires, cables, and printed electrical connections, and, in some non-limiting and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible) domain.

[0104] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0105] Any reference to elements using designations such as “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, references to first and second elements do not imply that only two elements may be adopted, or that the first element must precede the second element in any way.

[0106] Where the terms “include,” “including,” and their variations are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0107] In this disclosure, if articles are added by translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0108] In this disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "combine" may be interpreted similarly to "different." [Explanation of symbols]

[0109] 100...LMF, 101...Acquisition unit, 102...Determination unit, 103...Correspondence table, 104...Request unit, 105...Calculation unit, 106...Transmission unit, 150...gNB, 200...AMF, 300...LCS-Client, 400...Terminal.

Claims

1. An acquisition unit that acquires identification information of the base station where a specified terminal is located, in accordance with an external request, A determination unit that determines corresponding information regarding the acquisition of measurement information at the base station based on the aforementioned identification information, A request unit that requests measurement information from the terminal based on the determination result from the determination unit, A calculation unit that calculates the location information of the terminal based on the measurement information of the terminal, A base station positioning device equipped with the following features.

2. The system includes a table that associates base station identification information with the corresponding base station information. The determination unit determines the corresponding base station information acquired by the acquisition unit based on the information stored in the table. The base station positioning device according to claim 1.

3. The request unit, based on the determination result, specifies the measurement information that can be obtained from the base station and requests the said measurement information. The base station positioning device according to claim 1.

4. The measurement information acquires multiple pieces of information regarding radio waves between the base station and the terminal. The base station positioning device according to claim 1.

5. The aforementioned correspondence information is support information indicating support for information for base station positioning. The base station positioning device according to claim 1.

6. The support information includes at least one of the following, obtainable from the base station: radio wave strength, radio wave quality, and radio wave arrival time between the terminal and the base station. The base station positioning device according to claim 5.

7. The aforementioned support information is a support pattern that indicates a combination of radio wave strength, radio wave quality, and radio wave arrival time between the terminal and the base station, which can be obtained from the base station. The base station positioning device according to claim 5.

8. The aforementioned correspondence information is the type information of the base station. The base station positioning device according to claim 1.

9. The aforementioned correspondence information further associates support information with the base station type information. The determination unit determines type information based on the identification information, and further determines support information based on the identification information. The base station positioning device according to claim 8.

10. A base station positioning device according to claim 1, A control device that controls the mobility of the terminal, A base station that communicates wirelessly with the aforementioned terminal, In a communication system including, When the control device receives a terminal location positioning request from an external source, it transmits identification information of the base station where the terminal is located to the base station positioning device. The base station positioning device acquires measurement information from the base station based on the determination result regarding the base station correspondence information indicated by the transmitted identification information. The base station positioning device performs base station positioning based on the measurement information. Communication system.

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