WO2020217539A1

WO2020217539A1 - User device

Info

Publication number: WO2020217539A1
Application number: PCT/JP2019/018161
Authority: WO
Inventors: 英和下平; 祐輝松村
Original assignee: 株式会社Ｎｔｔドコモ
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-10-29

Abstract

UE (10) that comprises: a control unit (15) that modifies the operating bandwidth of the UE (10) at timing at which the position of the UE (10) is measured; and a reception unit (13) that, over the modified operating bandwidth of the UE (10), receives a downlink positioning reference signal (DL PRS) that is used to measure the position of the UE (10).

Description

User device

The present invention relates to a user device that performs position measurement.

The 3rd Generation Partnership Project (3GPP) has specified Long Term Evolution (LTE), and has specified LTE-Advanced (hereinafter referred to as LTE including LTE-Advanced) for the purpose of further speeding up LTE. In addition, 3GPP is also considering the specifications of LTE successor systems such as 5G New Radio (NR).

The NR stipulates that Numerology, which defines the subcarrier spacing, and Bandwidth Parts (BWP), which defines the operating bandwidth, can be set for each cell (see Non-Patent Document 1).

In the NR, the user device (UE) measures the position of the UE using a plurality of downlink / positioning reference signals (DL PRS) transmitted from the serving cell and at least two adjacent cells.

However, in NR, the Numerology or BWP set for transmitting DL PRS may differ in multiple cells.

Therefore, the UE may not be able to receive the DL PRS transmitted from the adjacent cell. In this case, the UE cannot measure the position of the UE.

Therefore, the present invention has been made in view of such a situation, and position measurement can be performed in a plurality of cells even when the subcarrier spacing or the operating bandwidth set for transmitting the positioning reference signal is different. It is an object of the present invention to provide a user device that can be implemented.

The user device (10) according to one aspect of the present invention is changed to a control unit (15) that changes the operating bandwidth of the user device (10) at the timing of measuring the position of the user device (10). A receiving unit (13) for receiving a positioning reference signal (DL PRS) used for measuring the position of the user device (10) in the operating bandwidth of the user device (10) is provided.

FIG. 1 is an overall schematic configuration diagram of the wireless communication system 1. FIG. 2 is a diagram illustrating an example of DL PRS BWP and UE10 active BWP. FIG. 3 is a functional block configuration diagram of UE10. FIG. 4 is a diagram showing an example of a sequence of positioning procedures by the UE 10 and the location server 50. FIG. 5 is a diagram showing an operation flow of the position measurement process by the UE 10. FIG. 6 is a diagram illustrating a measurement method 1 in the position measurement process. FIG. 7 is a diagram illustrating a measurement method 2 in the position measurement process. FIG. 8 is a diagram illustrating a measurement method 3 in the position measurement process. FIG. 9 is a diagram illustrating a measurement method 4 in the position measurement process. FIG. 10 is a diagram illustrating a measurement method 5 in the position measurement process. FIG. 11 is a diagram illustrating a measurement method 6 in the position measurement process. FIG. 12 is a diagram showing an example of the hardware configuration of UE10.

Hereinafter, embodiments will be described based on the drawings. The same functions and configurations are designated by the same or similar reference numerals, and the description thereof will be omitted as appropriate.

(1) Overall Schematic Configuration of Wireless Communication System FIG. 1 is an overall schematic configuration diagram of the wireless communication system 1 according to the embodiment.

Wireless communication system 1 includes UE10, radio base stations (gNB) 20, 20a, 20b, core network 40, and location server 50.

UE10 is in the serving cell 30 under gNB20. UE10 executes wireless communication according to NR between UE10 and gNB20 and core network 40. UE10 has an active BWP, which is the operating bandwidth of UE10. UE10 can receive various signals transmitted by BWP within the range of active BWP.

The gNB20, 20a, 20b executes wireless communication according to NR between the gNB20, 20a, 20b and the core network 40. The gNB 20 controls the serving cell 30. gNB20a and 20b control adjacent cells 30a and 30b.

GNB20, 20a, 20b transmit DL PRS # x, DL PRS # y, DL PRS # z at a predetermined timing. DL PRS # x, DL PRS # y, DL PRS # z are used to measure the position of UE10. gNB20, 20a, 20b can set the BWP for transmitting DL PRS # x, DL PRS # y, DL PRS # z independently of the active BWP set in UE10. In this case, UE10 is notified of these set BWPs.

FIG. 2 is a diagram illustrating an example of DL PRS BWP and UE10 active BWP. Active BWP represents the BWP set in the current communication among the BWP supported by UE10.
In the example shown in FIG. 2, since DL PRS #x is mapped within the range of the active BWP of UE10, UE10 can receive DL PRS #x. On the other hand, DL PRS #y is mapped outside the range of UE10's active BWP, so UE10 cannot receive DL PRS # y. Also, UE10 receives DL PRS # z because some of the resources in DL PRS # z are only within the active BWP of UE10 and the rest are outside the active BWP of UE10. Can not do it.

Core network 40 communicates with UE10 via gNB20. The node group belonging to the core network 40 or the core network 40 including the location server 50 receives various settings of DL PRS # x, DL PRS # y, DL PRS # z from gNB20, 20a, 20b. When the UE 10 attaches to the core network 40 or receives a Capability request from the core network 40, the UE 10 notifies the core network 40 of the capability of the UE 10.

The location server 50 is provided in the core network 40. The location server 50 performs a positioning procedure between the UE 10 and the location server 50, as will be described later. When the UE10 measures the position of the UE10 by the instruction from the position server 50, the serving cell 30 under the gNB20 and the adjacent cells 30a, 30b under the gNB20a, 20b, DL PRS # x, DL PRS # y, DL PRS # Need to receive z. The position of UE10 is estimated by using the reception time difference of DL PRS # x, DL PRS # y, DL PRX # z.

When UE10 receives DL PRS # x, DL PRS # y, DL PRS # z, the measurement results such as the reception time difference of DL PRS # x, DL PRS # y, DL PRS # z are measured via gNB20. Send to location server 50. The UE 10 may estimate the position of the UE 10 based on the measurement result and transmit the estimated position information to the position server 50.

(2) UE Functional Block Configuration Next, the UE 10 functional block configuration will be described. Hereinafter, only the parts related to the features in the present embodiment will be described. Therefore, it goes without saying that the UE 10 includes other functional blocks that are not directly related to the features of the present embodiment.

FIG. 3 is a functional block configuration diagram of UE10. The hardware configuration of UE10 will be described later. As shown in FIG. 3, the UE 10 includes a transmission unit 11, a reception unit 13, and a control unit 15.

The transmission unit 11 transmits Capability information including BWP that UE10 can support to the network (for example, core network 40 and location server 50). The transmission unit 11 transmits the measurement result to the location server 50.

The receiving unit 13 receives DL PRS # x from the serving cell 30 under the gNB 20. The receiving unit 13 receives DL PRS # y and DL PRS # z from the adjacent cells 30a and 30b under gNB20a and 20b. The receiving unit 13 receives the setting information regarding the newly set active BWP of the UE 10 from the network (for example, the core network 40, the location server 50).

Control unit 15 changes the active BWP of UE10. The control unit 15 measures the position based on the received DL PRS # x, DL PRS # y, DL PRS # z.

(3) Operation of wireless communication system Next, the operation of wireless communication system 1 will be described.

(3.1) Positioning procedure First, the positioning procedure performed between the UE 10 and the location server 50 will be described. The positioning procedure is performed between the UE 10 and the position server 50 via the gNB 20 in accordance with a new control procedure defined by the LTE Positioning Protocol (LPP) or NR.

FIG. 4 is a diagram showing an example of a sequence of positioning procedures by the UE 10 and the location server 50. Location server 50 sends a Capability request message to UE10 (S1). When the UE10 receives the Capability request message, it sends the Capability information to the location server 50 (S3).

The Capability information may include Numerology that can be received by UE10. In Numerology, the subcarrier interval is specified. Specifically, Numerology defines subcarrier intervals of 15kHz, 30kHz, 60kHz, and 120kHz.

When the location server 50 receives the Capability information from UE10, it transmits the Assistance data to UE10 (S5) and then sends the location information request message to UE10. The Assistance data contains information about adjacent cells 30a, 30b. The Assistance data may include Numerology set in adjacent cells 30a and 30b.

UE10 measures the position when it receives the position information request message from the position server 50 (S9). After performing the position measurement, UE10 transmits the measurement result to the position server 50 (S11).

(3.2) Position measurement processing Next, the position measurement processing by UE10 performed in S9 of the positioning procedure will be described.

FIG. 5 is a diagram showing an operation flow of position measurement processing by UE10. When the UE10 receives the location information request message from the location server 50, it determines whether or not it is the measurement timing (S12). When the measurement timing is reached, the UE 10 receives DL PRS # x, DL PRS # y, DL PRS # z from the serving cell 30 and the adjacent cells 30a and 30b (S13). On the other hand, if it is not the measurement timing, UE10 waits for the measurement timing to be reached.

When UE10 receives DL PRS # x, DL PRS # y, DL PRS # z, it measures the reception time difference of DL PRS # x, DL PRS # y, DL PRX # z (S15).

The measurement methods 1 to 6 and others in the position measurement process will be described below.

(3.2.1) Measurement method 1
FIG. 6 is a diagram illustrating the measurement method 1. In this measurement method, the UE10 measures the position of the UE10 within the measurement gap period, which is a period for measuring different frequencies or the same frequency. The measurement gap period is notified from the upper layer.

The active BWP of UE10 is not set within the measurement gap period. Therefore, the UE 10 can receive various signals over the entire channel bandwidth CBW. Therefore, the UE 10 can receive DL PRS # x, DL PRS # y, DL PRS # z from the serving cell 30 and the adjacent cells 30a and 30b.

On the other hand, outside the measurement gap period, the active BWP of UE10 is set as shown in FIG. Therefore, when the position of UE10 is measured outside the measurement gap period, UE10 receives only DL PRS # x transmitted from the serving cell 30.

(3.2.2) Measurement method 2
FIG. 7 is a diagram illustrating the measurement method 2. In this measurement method, the UE10 measures the position of the UE10 outside the measurement gap period. Here, the setting of Numerology in the adjacent cells 30a and 30b is the same as the setting of Numerology in the serving cell 30. In addition, DL PRS #x, DL PRS #y, and DL PRS # z are included in the range of active BWP of UE10 outside the measurement timing.

Therefore, the UE10 can receive the DL PRS # x, DL PRS # y, DL PRS # z from the serving cell 30 and the adjacent cells 30a, 30b without changing the active BWP of the UE10 at the measurement timing. ..

(3.2.3) Measurement method 3
FIG. 8 is a diagram illustrating the measurement method 3. In this measurement method, the UE10 measures the position of the UE10 outside the measurement gap period. Here, the setting of Numerology in the adjacent cells 30a and 30b is the same as the setting of Numerology in the serving cell 30. In addition, outside the measurement timing, only PRS #x is included in the range of the active BWP of UE10 (see FIG. 2).

Therefore, when the measurement timing is entered, the UE10 is notified of the newly set active BWP of the UE10 from the network (for example, core network 40, location server 50). When UE10 receives the notification, it changes the current active BWP of UE10 to the newly set active BWP of UE10.

Specifically, the newly set range of UE10's active BWP includes DL PRS # x, DL PRS # y, and DL PRS # z. Therefore, at the measurement timing, the UE 10 can receive DL PRS # x, DL PRS # y, DL PRS # z from the serving cell 30 and the adjacent cells 30a, 30b.

UE10 performs position measurement based on the received DL PRS # x, DL PRS # y, DL PRS # z, and when the measurement result is transmitted to the network, the current active BWP of UE10 is set to the measurement timing from the network. You will be instructed to return to the UE10 active BWP (default BWP) before entering. As a result, only PRS # x is included in the range of active BWP of UE10 (see FIG. 2).

Note that UE10 may change the current active BWP of UE10 to the default BWP when the timer that starts in UE10 expires.

(3.2.4) Measurement method 4
FIG. 9 is a diagram illustrating the measurement method 4. In this measurement method, the UE10 measures the position of the UE10 outside the measurement gap period. Here, the setting of Numerology in the adjacent cells 30a and 30b is the same as the setting of Numerology in the serving cell 30. In addition, outside the measurement timing, only PRS #x is included in the range of the active BWP of UE10 (see FIG. 2).

Therefore, when the measurement timing is entered, the UE10 first receives DL PRS # x from the serving cell 30 (first measurement).

During the measurement timing, when a predetermined period has elapsed from the first measurement, the UE10 is notified of the newly set active BWP of the UE10 from the network (for example, core network 40, location server 50). When UE10 receives the notification, it changes the current active BWP of UE10 to the newly set active BWP of UE10.

Specifically, the newly set range of UE10's active BWP includes only DL PRS # y out of DL PRS # x, DL PRS # y, and DL PRS # z. Therefore, UE10 can receive DLPRS #y from the adjacent cell 30a (second measurement).

During the measurement timing, when a predetermined period has passed from the second measurement, the UE10 is notified of the newly set active BWP of the UE10 from the network. When UE10 receives the notification, it changes the current active BWP of UE10 to the newly set active BWP of UE10.

Specifically, the newly set range of UE10's active BWP includes only DL PRS # z among DL PRS # x, DL PRS # y, and DL PRS # z. Therefore, at the measurement timing, the UE 10 can receive DL PRS # z from the adjacent cell 30b (third measurement).

Regarding the change of the active BWP during the measurement timing, the UE10 may change the active BWP based on a predetermined rule after receiving the first notification from the network. For example, the entire channel bandwidth may be divided into four, and the active BWP may be autonomously changed in a predetermined order from the first measurement.

In this case, for example, UE10 receives Assistance data including DL PRS # y and DL PRS # z in adjacent cells 30a and 30b in S5 of the positioning procedure.

Further, regarding the change of the active BWP during the measurement timing, the change instruction is periodically arranged in a predetermined part of the frame as a frame configuration, and when the UE10 reads the update instruction from the frame, the active BWP is in a predetermined order. May be changed autonomously.

(3.2.5) Measurement method 5
FIG. 10 is a diagram illustrating the measurement method 5. In this measurement method, the UE10 measures the position of the UE10 outside the measurement gap period. Here, the setting of Numerology in the adjacent cells 30a and 30b is the same as the setting of Numerology in the serving cell 30. In addition, outside the measurement timing, only PRS #x is included in the range of the active BWP of UE10 (see FIG. 2).

Therefore, when the measurement timing is entered, the UE10 first receives DL PRS #x from the serving cell 30 (first measurement).

During the measurement timing, when a predetermined period elapses from the first measurement, the UE10 is notified of the newly set active BWP of the UE10 from the network (for example, the core network 40 or the location server 50). When UE10 receives the notification, it changes the current active BWP of UE10 to the newly set active BWP of UE10.

Specifically, the newly set range of UE10's active BWP includes DL PRS # x, DL PRS # y, and DL PRS # z among DL PRS # x and DL PRS # y. Therefore, the UE 10 can receive DL PRS # x and DL PRS # y from the serving cell 30 and the adjacent cell 30a (second measurement).

Specifically, the newly set range of UE10's active BWP includes DL PRS # x, DL PRS # y, and DL PRS # z among DL PRS # x and DL PRS # z. Therefore, at the measurement timing, the UE 10 can receive DL PRS # x and DL PRS # z from the adjacent cell 30b (third measurement).

In this measurement method, the UE10 receives DL PRS # x multiple times at the measurement timing, but it may be received only once. In addition, when receiving DL PRS # x multiple times, UE10 is the latest DL PRS # x, DL PRS # x with the best reception quality, and one DL selected from multiple DL PRS # x. Position measurement may be performed using PRX # x or the like. Further, the UE 10 may calculate the average value of the reception qualities of a plurality of DL PRS # x and use the calculated average value for the position measurement.

(3.2.6) Measurement method 6
FIG. 11 is a diagram illustrating the measurement method 6. In this measurement method, the UE10 measures the position of the UE10 outside the measurement gap period. Here, the setting of Numerology in the adjacent cells 30a and 30b is different from the setting of Numerology in the serving cell 30. In addition, outside the measurement timing, only PRS #x is included in the range of the active BWP of UE10 (see FIG. 2).

Specifically, the newly set range of UE10's active BWP includes only DL PRS # y out of DL PRS # x, DL PRS # y, and DL PRS # z. The newly set Numerology of UE10's active BWP will be the same as DL PRS # y. Therefore, UE10 can receive DLPRS #y from the adjacent cell 30a (second measurement).

Specifically, the newly set range of UE10's active BWP includes only DL PRS # z among DL PRS # x, DL PRS # y, and DL PRS # z. The newly set Numerology of UE10's active BWP will be the same as DL PRS # z. Therefore, UE10 can receive DLPRS # z from the adjacent cell 30b (third measurement).

(3.2.7) Other networks (for example, core network 40 or location server 50) are measured by UE10 among the above-mentioned measurement methods 1 to 6 based on the ability of UE10 notified from UE10. Apply only the method. As a result, no measurement method other than the measurement method supported by UE10 is required for UE10.

For example, if UE10 cannot perform position measurement unless it has the same Numerology and the same BWP, the network applies only the measurement method 2 described above to UE10, and the other measurement methods to UE10. Is not required.

In addition, in the requirement specifications of Radio Resource Management (RRM) of Rel-15, the one with a longer delay should be applied by comparing the case of measuring within the measurement gap period and the case of measuring outside the measurement gap period. Is stipulated. However, the measurement gap period for position measurement is not limited to this.

(5) Action / Effect According to the above-described embodiment, the UE 10 has a control unit 15 that changes the active BWP of the UE 10 at the timing of measuring the position of the UE 10, and the position of the UE 10 in the changed active BWP of the UE 10. It includes a receiver 13 that receives the DL PRS used for making measurements.

With such a configuration, UE10 can change the active BWP of UE10 so that DL PRS # y and DL PRS # z are included in the range of active BWP.

Therefore, in UE10, Numerology or BWP set to transmit DL PRS # y, DL PRS # z in adjacent cells 30a and 30b is set to transmit DL PRS # x in serving cell 30. Positioning can be performed even if it differs from Numerology or BWP.

According to the above-described embodiment, the receiving unit 13 receives the change instruction from the network, and the control unit 15 changes the active BWP of the UE 10 based on the change instruction.

With such a configuration, UE10 can change the active BWP of UE10 so that DL PRS # y and DL PRS # z are included in the range of active BWP without increasing the load.

According to the above-described embodiment, the UE 10 further includes a transmission unit 11 that transmits a BWP compatible with the UE 10 to the network.

With such a configuration, it is possible to prevent the network from requesting the setting of active BWP that exceeds the capacity of UE10. Therefore, UE10 can perform position measurements without increasing the load.

According to the above-described embodiment, the control unit 15 includes at least one BWP among the BWPs set to transmit the DL PRS # y, DL PRS # z in the adjacent cells 30a and 30b. Change the active BWP for UE10.

With such a configuration, UE10 can change the active BWP of UE10 so that DL PRS # y and DL PRS # z are surely included in the range of active BWP.

According to the above-described embodiment, when the active BWP of UE10 includes all of the BWPs set to transmit DL PRS # y, DL PRS # z in the adjacent cells 30a and 30b. Maintains UE10's active BWP.

With such a configuration, UE10 maintains the active BWP when DL PRS # y and DL PRS # z are included in the range of the active BWP. Therefore, UE10 can perform position measurements without increasing the load.

(6) Other Embodiments Although the contents of the present invention have been described above according to the embodiments, the present invention is not limited to these descriptions, and various modifications and improvements are possible. It is obvious to the trader.

The block configuration diagram (FIG. 3) used in the description of the above-described embodiment shows a block of functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Further, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized by using one device that is physically or logically connected, or directly or indirectly (for example, by using two or more physically or logically separated devices). , Wired, wireless, etc.) and may be realized using these plurality of devices. The functional block may be realized by combining the software with the one device or the plurality of devices.

Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, deemed, and notification ( There are, but are not limited to, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. .. For example, a functional block (constituent unit) that makes transmission function is called a transmitting unit or a transmitter. As described above, the method of realizing each is not particularly limited.

Further, the UE 10 described above may function as a computer that processes the wireless communication method of the present disclosure. FIG. 12 is a diagram showing an example of the hardware configuration of the device. As shown in FIG. 12, the device may be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

In the following explanation, the word "device" can be read as a circuit, device, unit, etc. The hardware configuration of the device may be configured to include one or more of each of the devices shown in the figure, or may be configured not to include some of the devices.

Each functional block of the device is realized by any hardware element of the computer device or a combination of the hardware elements.

Further, for each function in the device, by loading predetermined software (program) on the hardware such as the processor 1001 and the memory 1002, the processor 1001 performs the calculation, controls the communication by the communication device 1004, and the memory. It is realized by controlling at least one of reading and writing of data in 1002 and storage 1003.

Processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, and the like.

Further, the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used. Further, the various processes described above may be executed by one processor 1001 or may be executed simultaneously or sequentially by two or more processors 1001. Processor 1001 may be implemented by one or more chips. The program may be transmitted from the network via a telecommunication line.

The memory 1002 is a computer-readable recording medium, and is composed of at least one of, for example, ReadOnlyMemory (ROM), ErasableProgrammableROM (EPROM), Electrically ErasableProgrammableROM (EEPROM), RandomAccessMemory (RAM), and the like. May be done. The memory 1002 may be called a register, a cache, a main memory (main storage device), or the like. The memory 1002 can store a program (program code), a software module, or the like that can execute the method according to the embodiment of the present disclosure.

The storage 1003 is a computer-readable recording medium, for example, an optical disk such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, a photomagnetic disk (for example, a compact disk, a digital versatile disk, a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like. Storage 1003 may be referred to as auxiliary storage. The recording medium described above may be, for example, a database, server or other suitable medium containing at least one of memory 1002 and storage 1003.

The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.

Communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of.

The input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

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

Further, the device includes hardware such as a microprocessor, a digital signal processor (Digital Signal Processor: DSP), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), and a Field Programmable Gate Array (FPGA). The hardware may implement some or all of each functional block. For example, processor 1001 may be implemented using at least one of these hardware.

Further, the notification of information is not limited to the mode / embodiment described in the present disclosure, and may be performed by using another method. For example, information notification includes physical layer signaling (for example, Downlink Control Information (DCI), Uplink Control Information (UCI), upper layer signaling (eg, RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block)). (MIB), System Information Block (SIB)), other signals or combinations thereof. RRC signaling may also be referred to as an RRC message, for example, RRC Connection Setup. ) Message, RRC Connection Reconfiguration message, etc. may be used.

Each aspect / embodiment described in the present disclosure includes LongTermEvolution (LTE), LTE-Advanced (LTE-A), SUPER3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system ( 5G), FutureRadioAccess (FRA), NewRadio (NR), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UltraMobile Broadband (UMB), IEEE802.11 (Wi-Fi (registered trademark)) , IEEE802.16 (WiMAX®), IEEE802.20, Ultra-WideBand (UWB), Bluetooth®, and other systems that utilize appropriate systems and at least one of the next generation systems extended based on them. It may be applied to one. In addition, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).

The order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present disclosure may be changed as long as there is no contradiction. For example, the methods described in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.

In some cases, the specific operation performed by the base station in the present disclosure may be performed by its upper node (upper node). In a network consisting of one or more network nodes having a base station, various operations performed for communication with a terminal are performed by the base station and other network nodes other than the base station (for example, MME or). It is clear that it can be done by at least one of (but not limited to, S-GW, etc.). Although the case where there is one network node other than the base station is illustrated above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).

Information and signals (information, etc.) can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.

The input / output information may be stored in a specific location (for example, memory) or may be managed using a management table. The input / output information can be overwritten, updated, or added. The output information may be deleted. The input information may be transmitted to another device.

The determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).

Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched with execution. Further, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.

Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name. , Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc. should be broadly interpreted to mean.

In addition, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, a website, where the software uses at least one of wired technology (coaxial cable, fiber optic cable, twist pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.). When transmitted from a server, or other remote source, at least one of these wired and wireless technologies is included within the definition of transmission medium.

The information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.

Note that the terms explained in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Also, the signal may be a message. Further, the component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.

The terms "system" and "network" used in this disclosure are used interchangeably.

In addition, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented. For example, the radio resource may be one indicated by an index.

The names used for the above parameters are not limited in any respect. Further, mathematical formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure. Since the various channels (eg PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements are in any respect limited names. is not.

In this disclosure, "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", "cell group" Terms such as "carrier" and "component carrier" can be used interchangeably. Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.

The base station can accommodate one or more (for example, three) cells (also called sectors). When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (Remote Radio)). Communication services can also be provided by Head: RRH).

The term "cell" or "sector" refers to a base station that provides communication services in this coverage, and part or all of the coverage area of at least one of the base station subsystems.

In the present disclosure, terms such as "mobile station (MS)", "user terminal", "user equipment (UE)", and "terminal" may be used interchangeably. ..

Mobile stations can be subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless, depending on the trader. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like. At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like. The moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be. It should be noted that at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation. For example, at least one of a base station and a mobile station may be an Internet of Things (IoT) device such as a sensor.

Further, the base station in the present disclosure may be read as a mobile station (user terminal, the same applies hereinafter). For example, communication between a base station and a mobile station has been replaced with communication between a plurality of mobile stations (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.). Each aspect / embodiment of the present disclosure may be applied to the configuration. In this case, the mobile station may have the function of the base station. In addition, words such as "up" and "down" may be read as words corresponding to inter-terminal communication (for example, "side"). For example, the uplink, downlink, and the like may be read as side channels.

Similarly, the mobile station in the present disclosure may be read as a base station. In this case, the base station may have the functions of the mobile station.

The terms "connected", "coupled", or any variation thereof, mean any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two "connected" or "combined" elements. The connection or connection between the elements may be physical, logical, or a combination thereof. For example, "connection" may be read as "access". As used in the present disclosure, the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain. , Electromagnetic energies with wavelengths in the microwave and light (both visible and invisible) regions, etc., can be considered to be "connected" or "coupled" to each other.

The reference signal can also be abbreviated as Reference Signal (RS), and may be called a pilot (Pilot) depending on the applicable standard.

The phrase "based on" as used in this disclosure does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".

Any reference to elements using designations such as "first", "second" as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.

When "include", "including" and variations thereof are used in the present disclosure, these terms are as comprehensive as the term "comprising". Is intended. Moreover, the term "or" used in the present disclosure is intended not to be an exclusive OR.

In the present disclosure, if articles are added by translation, for example, a, an and the in English, the disclosure may include that the nouns following these articles are in the plural.

In the present disclosure, the term "A and B are different" may mean "A and B are different from each other". The term may mean that "A and B are different from C". Terms such as "separate" and "combined" may be interpreted in the same way as "different".

Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure may be implemented as an amendment or modification without departing from the purpose and scope of the present disclosure, which is determined by the description of the scope of claims. Therefore, the description of this disclosure is for purposes of illustration only and does not have any restrictive meaning to this disclosure.

According to the user device described above, it is useful because position measurement can be performed even when the subcarrier interval or the operating bandwidth set for transmitting the positioning reference signal is different in a plurality of cells.

1 Wireless communication system
10 UE
11 Transmitter
13 Receiver
15 Control unit
20, 20a, 20b gNB
30 serving cell
30a, 30b adjacent cells
40 core network
50 location server
1001 processor
1002 memory
1003 storage
1004 communication device
1005 input device
1006 output device
1007 bus

Claims

It is a user device
A control unit that changes the operating bandwidth of the user device at the timing of measuring the position of the user device.
A receiver that receives a positioning reference signal used to measure the position of the user device in the modified operating bandwidth of the user device.
A user device comprising.
The receiver receives the change instruction from the network and receives the change instruction.
The user device according to claim 1, wherein the control unit changes the operating bandwidth of the user device based on the change instruction.
The user device according to claim 2, further comprising a transmission unit that transmits an operating bandwidth that the user device can handle to the network.
The control unit changes the operating bandwidth of the user apparatus so as to include at least one operating bandwidth among the operating bandwidths set for transmitting the positioning reference signal in a plurality of adjacent cells. The user device according to claim 1.
When the operating bandwidth of the user apparatus includes all of the operating bandwidths set for transmitting the positioning reference signal in a plurality of adjacent cells, the control unit determines the operating bandwidth of the user apparatus. The user device according to claim 1.