WO2023209912A1

WO2023209912A1 - Terminal and base station

Info

Publication number: WO2023209912A1
Application number: PCT/JP2022/019199
Authority: WO
Inventors: 真哉岡村; 知也小原; 康介島; 浩樹原田; 春陽越後
Original assignee: 株式会社Ｎｔｔドコモ
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2023-11-02

Abstract

This terminal comprises a reception section which receives, from a base station, configuration information of reference signals transmitted by a plurality of carriers, and a control section which assumes that the timing for performing phase measurement for positioning differs among the plurality of carriers.

Description

Terminal and base station

The present invention relates to terminals and base stations in wireless communication systems.

In the 3GPP (3rd Generation Partnership Project), in order to further increase system capacity, further increase data transmission speed, further reduce delay in wireless sections, etc., 5G or NR (New Radio) Studies are progressing on a wireless communication system called "NR" (hereinafter referred to as "NR"). In 5G, various wireless technologies and network architectures are being studied in order to meet the requirements of achieving a throughput of 10 Gbps or more while reducing the delay in the wireless section to 1 ms or less.

Additionally, studies are underway on NR Positioning, which performs positioning using reference signals and the like. Additionally, as a functional extension of general-purpose NR Positioning, studies are underway on carrier phase measurement (CPM), which is a highly accurate positioning method using carrier phase that is used in GNSS and the like.

In carrier phase measurement, one method of performing Ambiguity Resolution (AR) for determining the wave number is to use multiple carrier waves with different wavelengths (frequencies). In AR, the terminal measures the phase of each carrier.

However, when using multiple carrier waves with different wavelengths (frequencies), there is a possibility that the phase of each carrier wave cannot be appropriately measured at the measurement point (terminal) due to a transmission timing error caused by the antenna connector on the transmitting side.

The present invention has been made in view of the above points, and an object of the present invention is to provide a technique for reducing the influence of transmission timing errors when using multiple carrier waves with different wavelengths in carrier phase measurement. do.

According to the disclosed technology, a receiving unit receives configuration information of reference signals transmitted on multiple carriers from a base station;
a control unit that assumes that the timing of performing phase measurement for positioning is different between the plurality of carriers;
A terminal is provided.

According to the disclosed technology, a technology is provided for reducing the influence of transmission timing errors when using multiple carrier waves with different wavelengths in carrier phase measurement.

FIG. 1 is a diagram for explaining a wireless communication system in an embodiment of the present invention. FIG. 1 is a diagram for explaining a wireless communication system in an embodiment of the present invention. FIG. 2 is a diagram showing a configuration in which multiple base stations exist. FIG. 2 is a diagram for explaining carrier phase measurement (CPM). FIG. 2 is a diagram for explaining carrier phase measurement (CPM). FIG. 2 is a diagram for explaining an example of AR. FIG. 2 is a diagram for explaining an example of AR. FIG. 2 is a diagram for explaining a problem. FIG. 2 is a diagram for explaining a problem. FIG. 3 is a diagram for explaining a basic operation example. FIG. 3 is a diagram for explaining an operation example of the first embodiment. FIG. 7 is a diagram for explaining an example of operation of the second embodiment. It is a diagram showing an example of the functional configuration of a base station 10 and an LMF 30 in an embodiment of the present invention. It is a diagram showing an example of a functional configuration of a terminal 20 in an embodiment of the present invention. It is a diagram showing an example of the hardware configuration of base station 10, terminal 20, or LMF 30 in an embodiment of the present invention. FIG. 1 is a diagram showing an example of a vehicle.

Embodiments of the present invention will be described below with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

(System configuration)
FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention. A wireless communication system according to an embodiment of the present invention includes a base station 10 and a terminal 20, as shown in FIG. Furthermore, the core network is equipped with an LMF 30 and is capable of communicating with the base station 10. Note that the LMF 30 may communicate with the base station 10 via AMF. LMF 30 is an example of a network device.

Although one base station 10 and one terminal 20 are shown in FIG. 1, this is just an example, and there may be a plurality of each. For example, a plurality of base stations 10 may be provided that serve as transmission sources of DL-PRS (positioning reference signals) that the terminal 20 receives. One or more or all of the plurality of base stations 10 may be an airborne device (eg, a satellite, HAPS).

The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. The physical resources of a radio signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. Furthermore, a TTI (Transmission Time Interval) in the time domain may be a slot, or a TTI may be a subframe. Note that a cell and a CC may be considered synonymous.

The base station 10 is capable of performing carrier aggregation in which multiple cells (multiple CCs (component carriers)) are bundled to communicate with the terminal 20. In carrier aggregation, one PCell (primary cell) and one or more SCells (secondary cells) are used.

The base station 10 transmits a synchronization signal, system information, etc. to the terminal 20. The synchronization signals are, for example, NR-PSS and NR-SSS. System information is transmitted, for example, on NR-PBCH or PDSCH, and is also referred to as broadcast information. As shown in FIG. 1, the base station 10 transmits a control signal or data to the terminal 20 via DL (Downlink), and receives the control signal or data from the terminal 20 via UL (Uplink). Note that here, what is transmitted on control channels such as PUCCH and PDCCH is called a control signal, and what is transmitted on shared channels such as PUSCH and PDSCH is called data. It is. Further, UCI (Uplink Control Information) is transmitted via PUCCH or PUSCH.

The terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a M2M (Machine-to-Machine) communication module. As shown in FIG. 1, the terminal 20 receives control signals or data from the base station 10 via DL, and transmits control signals or data to the base station 10 via UL, thereby receiving various types of information provided by the wireless communication system. Use communication services. Note that the terminal 20 may be called a UE, and the base station 10 may be called a gNB. Furthermore, the terminal 20 is equipped with a carrier phase positioning function.

The terminal 20 can perform carrier aggregation in which multiple cells (multiple CCs (component carriers)) are bundled to communicate with the base station 10. In carrier aggregation, one PCell (primary cell) and one or more SCells (secondary cells) are used. Also, a PUCCH-SCell with PUCCH may be used.

The LMF 30 is a function (device) responsible for communication control regarding location information services defined in 5GC. The LMF 30 may also be called a location management server, location management device, or network device. The LMF 30 can receive reference signal measurement results (phase, received power, time difference, angle, etc.) from the terminal 20 or the base station 10, and calculate the position of the terminal 20, for example. Further, the LMF 30 can provide setting information or control information regarding positioning to the terminal 20 and the base station 10.

FIG. 2 shows a configuration example of a wireless communication system when DC (dual connectivity) is implemented. As shown in FIG. 2, a base station 10A serving as an MN (Master Node) and a base station 10B serving as an SN (Secondary Node) are provided. Base station 10A and base station 10B are each connected to core network 40. Terminal 20 can communicate with both base station 10A and base station 10B.

A cell group provided by the base station 10A, which is an MN, is called an MCG (Master Cell Group), and a cell group provided by the base station 10B, which is an SN, is called an SCG (Secondary Cell Group). Furthermore, in the DC, the MCG is composed of one PCell and one or more SCells, and the SCG is composed of one PSCell (Primary SCell) and one or more SCells.

The processing operations in this embodiment may be executed with the system configuration shown in FIG. 1, may be executed with the system configuration shown in FIG. 2, or may be executed with a system configuration other than these. FIG. 3 shows an example in which the terminal 20 performs positioning by receiving reference signals from a plurality of base stations 10A to 10C. Basically, the position of the terminal 20 can be determined by determining the distance between the terminal 20 and multiple base stations.

The distance between the terminal 20 and the base station can be determined by the arrival time of the signal or the wave number (wave number x wavelength) of the signal carrier wave. In this embodiment, the wave number of the carrier wave is used, as will be described later.

(About the assignment)
The reference signal used for positioning will be called PRS. In this embodiment, the terminal 20 performs carrier phase measurement (CPM). As mentioned above, CPM is a highly accurate positioning method using carrier phase, which is used in GNSS and the like.

Figure 4 shows an overview of CPM. FIG. 4 shows an example where the base station 10 is a satellite. As shown in Fig. 4, in CPM, the position of the positioning point is determined by finding the distance between the reference point and the positioning point using the number of carrier waves and the reception phase difference of the carrier wave (the phase of the part less than one wave). demand. Specifically, the arrival distance L can be expressed as "arrival distance (L) = carrier wave wavelength (λ) x wave number (N) + shift due to reception phase difference (Δλ)". Although the phase corresponding to Δλ can be determined by measuring the reference signal, the wave number (N) cannot be determined by one measurement (measurement using one carrier wave). As shown in FIG. 5, when using the L1 signal, there are about 500 N (wave number) candidates in a width of 100 m.

In CPM, the process of determining the wave number (N) is called Ambiguity Resolution (AR). Here, in GNSS, it is common to perform AR after calculating an initial value (using propagation time to narrow down the position candidates to a certain extent) by using multiple satellites.

Several methods have been proposed for determining the wave number (N), and the following methods (1) and (2) are typical methods.

(1) Method using the movement of satellites Since the coordinates of GPS satellites change every moment, the number of waves (N) can be narrowed down by receiving the signal multiple times with a receiver. An image of this method is shown in FIG.

(2) Method of using multiple carrier waves with different frequencies By using the phases of carrier waves with different wavelengths (frequencies), the number of candidate points can be significantly reduced. For example, an L1 signal (1575.42 MHz) and an L2 signal (1227.60 MHz) are used as carrier waves with different wavelengths. An image of this method is shown in FIG. The proposal according to the present embodiment is directed to the method (2) above, which uses a plurality of carrier waves of different frequencies.

In NR, it is assumed that PRS resources used in CPM AR are configured on multiple component carriers (CCs). Note that the component carrier may also be referred to as a carrier.

As mentioned above, when inter-CC multiplexing is performed, generally, a signal transmission timing error occurs due to the antenna connector on the transmitting side. Therefore, in the existing specification TS38.104, allowable timing errors (Time Alignment Errors: TAE) are defined for each CA pattern assuming MIMO CA. The stipulated contents are shown in Figure 8. TAE is the maximum timing difference between two different signals.

When performing CPM AR using multiple carrier waves with different wavelengths, there is a possibility that the phase measurement (phase difference detection) of each carrier wave cannot be performed at an appropriate timing due to a transmission timing error between CCs. For example, as shown in FIG. 9, when CC#0 and CC#1 are used as a plurality of carrier waves with different wavelengths, a shift occurs in the timing at which the phase should be measured due to a transmission timing error. If CC#0 and CC#1 are measured simultaneously without taking this shift into account, appropriate phase measurement results cannot be obtained.

Hereinafter, a technique for reducing the influence of PRS transmission timing errors in CPM will be described.

(Summary of embodiment)
The zeroth to third embodiments will be described below. The operation outline of the 0th embodiment to the 3rd embodiment is as follows. In the following description, the network (NW) may be replaced with the base station 10 (or LMF 30). Furthermore, in the following description, "CC" may be replaced with "cell".

Zeroth embodiment (high-level proposal): The terminal 20 assumes that carrier phase measurement (CPM) is configured.

As a variation of the zeroth embodiment, it may be assumed that the terminal 20 is configured by the NW to report carrier phase information (phase measurement result) as DL-PRS measurement result.

First embodiment: When the CPM is set, the terminal 20 assumes phase measurement timing in units of PRS resources.

Second embodiment: When the CPM is set, the terminal 20 assumes that assistance data (AD) related to phase measurement timing is signaled (notified) from the LMF 30 to the terminal 20.

Third embodiment: The LMF 30 may notify the base station 10 of the phase measurement timing offset (PMTO) using assistance information (AI).

According to the 0th to 3rd embodiments, it is possible to apply carrier phase measurement even when the transmission timing differs between PRS resources (e.g. during CA), and high-precision positioning can be achieved. . Each embodiment will be described in detail below. The 0th embodiment to the 3rd embodiment can be implemented in any combination.

(0th embodiment)
In the zeroth embodiment, it is assumed that the terminal 20 is configured with carrier phase measurement (CPM). It may be assumed that the terminal 20 is configured by the NW to report carrier phase information (phase measurement result) as a DL-PRS measurement result. A basic operation example in the 0th embodiment will be explained with reference to FIG. 10.

In S101, the terminal 20 transmits capability information (UE capability) to the base station 10. Note that S101 may not be performed.

In S102, the base station 10 transmits configuration information regarding carrier phase measurement to the terminal 20, and the terminal 20 receives this. The configuration information includes, for example, PRS resources and PMTO information, which will be described later.

For example, in S103, the terminal 20 receives DL-PRS transmitted simultaneously using multiple CCs based on the DL-PRS configuration information, and measures the phase of each CC at the terminal 20. The terminal 20 may perform positioning calculations using the measurement results, or may report the measurement results to the NW.

(First embodiment)
In the first embodiment, when CPM is set by the base station 10, the terminal 20 assumes phase measurement timing in units of PRS resources. For example, when executing CPM (including AR), the terminal 20 measures the phase of each of a plurality of carrier waves using phase measurement timing in units of PRS resources. Option 1 and Option 2 will be explained as more specific examples.

<First embodiment: Option 1>
When the terminal 20 performs AR using a plurality of PRS resources, it is assumed that the timing at which phase measurement is performed for each PRS resource may be different. The plurality of PRS resources here correspond to the plurality of carrier waves measured when the terminal 20 executes CPM.

For example, when using PRS resource 1 and PRS resource 2, from the base station 10, PRS resource 1 transmits a PRS on carrier wave 1, and PRS resource 2 transmits another PRS on carrier wave 2. The terminal 20 measures the phase of each carrier wave at different timings according to PMTO, which will be described later, by receiving the PRS transmitted on each carrier wave.

Furthermore, the above-mentioned "multiple PRS resources" may be rephrased as "multiple PRS resource sets" or "multiple CCs."

For example, one PRS resource set corresponds to one carrier wave (also called CC), and the one PRS resource set includes multiple PRS resources transmitted on the carrier wave (CC). Good too. For example, suppose that PRS resource set 1 corresponds to carrier wave 1 and PRS resource set 2 corresponds to carrier wave 2, and terminal 20 is configured with CPM that uses carrier wave 1 (or CC1) and carrier wave 2 (or CC2). do.

For example, the above configuration includes PRS resource A in PRS resource set 1 and PRS resource B in PRS resource set 2. The terminal 20 uses these resources to perform phase measurement using the PRS transmitted on carrier wave 1 and the PRS transmitted on carrier wave 2.

<First embodiment: Option 1: About PMTO>
Regarding the timing of measuring the phase for each CC (or carrier wave, carrier), a phase measurement timing offset (PMTO) may be defined in the specifications. In that case, the terminal 20 measures the phase of each CC based on the timing indicated by PMTO defined in the specification.

PMTO represents the timing difference (timing offset) between at least two CCs. As a PMTO, a timing offset between arbitrary CCs may be specified, and a timing offset between CCs that constitute the CA may be specified for each Inter-band CA (contiguous), Inter-band CA (non-contiguous), or Intra-band CA. A timing offset at may be defined. Further, the value of PMTO may be different between FR1 and FR2.

Furthermore, PMTO may be notified (signaled) from the base station 10 to the terminal 20. The notification is performed, for example, by RRC signaling. Regarding the PMTO notification method, the PMTO corresponding to the PRS resource index (which may be a set of two indexes) already configured in the terminal 20 may be notified, or the PMTO may be notified together with the CC index. Good too.

In addition, multiple PMTOs (candidates for PMTOs to actually use) are notified from the base station 10 to the terminal 20 by RRC signaling, and among the multiple PMTOs, (the index of) the PMTO to actually use is determined by MAC CE or DCI. The terminal 20 may be instructed from the base station 10.

Alternatively, the terminal 20 may determine the PMTO. For example, the terminal 20 measures TAE (transmission timing error at the base station 10) by measuring the difference in reception timing of a signal (for example, a reference signal) between CCs for which PMTO is to be determined, and transmits the measurement result to Used as PMTO. Furthermore, the PMTO obtained as the measurement result may be reported to the base station 10 together with the combination of CC index (or BWP ID) of the two CCs that performed the measurement.

Furthermore, when the terminal 20 receives a PMTO estimation instruction (TAE estimation instruction) from the base station 10, the terminal 20 may estimate (determine) PMTO by itself and perform CPM using the determined value. If the terminal 20 does not receive a PMTO estimation instruction (TAE estimation instruction) from the base station 10, the terminal 20 may use the above-described specified value or the set value from the base station 10.

<First embodiment: Option 1: Operation example>
An example of operation will be described with reference to FIG. In S102, the terminal 20 receives configuration information including multiple PRM resources and PMTO for performing CPM from the base station 10.

In S104, the phase of each CC is measured using the setting information. For example, as shown in FIG. 11, it is assumed that PMTO between CC#0 and CC#1 is set (or defined or estimated). The terminal 20 measures the phase of CC #0 at a timing indicated by A, and measures the phase of CC #1 at a timing indicated by B, which is PMTO after the timing indicated by A. The terminal 20 performs positioning calculations by itself using the measurement results. Alternatively, the terminal 20 may report the measurement results to the LMF 30, and the LMF 30 may perform positioning calculations.

<First embodiment: Option 2>
Next, option 2 will be explained. In option 2, when the terminal 20 performs AR using a plurality of PRS resources, it is assumed that the timing for performing phase measurement for each PRS resource is the same. Option 2 assumes, for example, that the base station 10 adjusts the transmission timing for each PRS resource in anticipation of a transmission timing error.

For example, when using PRS resource 1 and PRS resource 2, from the base station 10, PRS resource 1 transmits a PRS on carrier wave 1, and PRS resource 2 transmits another PRS on carrier wave 2. The terminal 20 measures the PRS transmitted on each carrier wave at the same timing, and measures the phase of each carrier wave.

The above-mentioned "multiple PRS resources" may be rephrased as "multiple PRS resource sets" or "multiple CCs."

<About the operation of option 1 and option 2>
For example, the terminal 20 may report capability information indicating that it supports option 1 to the base station 10. The base station 10 may set the PMTO described in option 1 only for the terminal 20 that has transmitted the capability information.

In addition, when configuring CPM, the terminal 20 is configured (instructed) by the base station 10 with information instructing it to perform the operation in option 1 or information instructing it to perform the operation in option 2. It may be assumed that The terminal 20 executes the operation of option 1 when the operation of option 1 is set (instructed), and executes the operation of option 2 when the operation of option 2 is set (instructed).

With the technology according to the first embodiment described above, the terminal 20 can perform measurements at appropriate timing, taking into account transmission timing errors between PRS resources. Furthermore, since the terminal 20 can compensate for timing errors using the parameters notified from the base station 10, it is possible to perform more accurate positioning.

(Second embodiment)
Next, a second embodiment will be described. In the second embodiment, when CPM is set for the terminal 20, the terminal 20 receives notification (signaling) of assistance data (AD) related to phase measurement timing from the LMF 30 to the terminal 20. You can assume that.

An example of the operation in the second embodiment will be described with reference to FIG. 12. In S201, CPM is set from the base station 10 to the terminal 20. The configuration information here includes, for example, PRS resources for each CC in multiple CCs used in CPM.

In S202, the LMF 30 notifies the terminal 20 of assistance data (AD), for example, by LPP signaling.

The assistance data includes, for example, the PMTO described in option 1 of the first embodiment. The terminal 20 that has received the PMTO can perform phase measurement that compensates for transmission timing errors, as described in option 1 of the first embodiment.

Further, the assistance data may include a PMTO measurement instruction (measurement request). The terminal 20 that receives this measurement instruction estimates (determines) PMTO as described above. The terminal 20 may use the estimated PMTO to perform phase measurements that compensate for transmission timing errors, as described in option 1 of the first embodiment. Furthermore, the terminal 20 may report the estimated PMTO to the base station 10 or the LMF 30. The base station 10 that has received the PMTO report can perform the operation described in option 2 of the first embodiment.

In addition, the assistance data includes existing information supported by Rel-16/17 NR (e.g., PRS ID, Cell ID, expected RSTD, Positioning frequency layer, TRP location, beam info, etc.) (Non-patent Document 1). May be included.

According to the technology according to the second embodiment described above, the terminal 20 or the base station 10 can compensate for transmission timing errors between PRS resources using the notified parameters. Highly accurate positioning becomes possible.

(Third embodiment)
Next, a third embodiment will be described. The third embodiment may be implemented in combination with any of the zeroth to second embodiments. In the third embodiment, the LMF 30 may notify the base station 10 of the PMTO using assistance information (AI). NRPPa signaling may be used as the signaling here.

The base station 10 that has received the PMTO notification can perform the operation described in option 2 of the first embodiment. Furthermore, the base station 10 that has received the PMTO notification may set (notify) the PMTO to the terminal 20. This allows the terminal 20 to perform the operation described in option 1 of the first embodiment.

For example, the LMF 30 holds the PMTO of each base station in advance and notifies the corresponding base station 10 of it. Further, the LMF 30 may hold the PMTO received from the terminal 20 in response to the PMTO measurement instruction described in the second embodiment for each base station, and may notify the corresponding base station 10 of the PMTO.

According to the technology according to the third embodiment described above, the terminal 20 or the base station 10 can compensate for transmission timing errors between PRS resources using the notified parameters. Highly accurate positioning becomes possible.

(Other examples)
An example applicable to any of the zeroth to third embodiments will be described below.

In this embodiment, DL-PRS is used as a DL reference signal used for positioning, but this is just an example, and a DL reference signal (or synchronization signal) different from DL-PRS is May be used instead. Further, the reference signal may be read as a positioning signal, a reference signal, or the like.

Additionally, "signaling" may be read as "configure with RRC", "activate/deactivate/update with MAC-CE", "indicate with DCI", etc. "Ambiguity Resolution (AR)" may be read as "Ambiguity estimation", "Ambiguity fixing", etc.

Additionally, "Carrier Phase Measurement (CPM)" may be read as "Carrier Phase Positioning (CPP)", "Phase-based positioning", etc. "Phase Measurement Timing Offset (PMTO)" may be read as "Measurement timing offset", "Phase offset", etc. "Assistance Data (AD)" and "Assistance Information (AI)" may be read as "Assist Data (AD)", "Assist Information (AI)", etc.

(Device configuration)
Next, an example of the functional configuration of the base station 10 and terminal 20 that execute the processes and operations described above will be described. The base station 10 and the terminal 20 include the functionality to implement all the embodiments described above. However, the base station 10 and the terminal 20 may each have only the functions of one of all the embodiments.

<Base station 10>
FIG. 13 is a diagram illustrating an example of the functional configuration of the base station 10. As shown in FIG. 13, base station 10 includes a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140. The functional configuration shown in FIG. 13 is only an example. As long as the operations according to the embodiments of the present invention can be executed, the functional divisions and functional parts may have any names. Furthermore, the transmitting section 110 and the receiving section 120 may be collectively referred to as a communication section.

The transmitting unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly. The transmitter 110 can also transmit a signal to a network device such as the LMF 30. The receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information on a higher layer from the received signals. The receiving unit 120 can also receive signals from a network device such as the LMF 30. Further, the transmitter 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, DCI using PDCCH, data using PDSCH, etc. to the terminal 20.

The setting unit 130 stores preset setting information and various setting information to be sent to the terminal 20 in a storage device included in the setting unit 130, and reads them from the storage device as necessary.

The control unit 140 schedules DL reception or UL transmission of the terminal 20 via the transmission unit 110. Further, the control unit 140 includes a function to perform LBT. A functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and a functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120. Further, the control unit 110 uses PMTO to perform adjustment so that the transmission timings of multiple carrier waves are aligned. Further, the transmitting section 110 may be called a transmitter, and the receiving section 120 may be called a receiver.

Furthermore, the LMF 30 may also have the configuration shown in FIG. 13. When the configuration shown in FIG. 13 is LMF, the transmitter 110 transmits signals to other network devices (including base stations), and the receiver 120 receives signals from other network devices (including base stations). do.

<Terminal 20>
FIG. 14 is a diagram showing an example of the functional configuration of the terminal 20. As shown in FIG. 14, the terminal 20 includes a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240. The functional configuration shown in FIG. 14 is only an example. As long as the operations according to the embodiments of the present invention can be executed, the functional divisions and functional parts may have any names. The transmitting section 210 and the receiving section 220 may be collectively referred to as a communication section.

The transmitter 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal. The receiving unit 220 wirelessly receives various signals and obtains higher layer signals from the received physical layer signals. Further, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL/SL control signals, DCI by PDCCH, data by PDSCH, etc. transmitted from the base station 10. For example, the transmitting unit 210 transmits a PSCCH (Physical Sidelink Control Channel), a PSSCH (Physical Sidelink Shared Channel), a PSDCH to another terminal 20 as D2D communication. (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) etc., and the receiving unit 220 may receive the PSCCH, PSSCH, PSDCH, PSBCH, etc. from the other terminal 20. Further, the transmitter 210 includes the antenna port described in this embodiment.

The setting unit 230 stores various types of setting information received from the base station 10 or other terminals by the receiving unit 220 in a storage device included in the setting unit 230, and reads the information from the storage device as necessary. The setting unit 230 also stores setting information that is set in advance.

The control unit 240 controls the terminal 20. A functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and a functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220. Further, the transmitter 210 may be called a transmitter, and the receiver 220 may be called a receiver. Note that the phase measurement may be performed by the receiving section 220 or the control section 240.

<Additional notes>
The terminal 20 and base station 10 may be configured as, for example, the terminals and base stations described in the following sections.
(Additional note 1)
a receiving unit that receives configuration information of reference signals transmitted on multiple carriers from a base station;
a control unit that assumes that the timing of performing phase measurement for positioning is different between the plurality of carriers;
A terminal equipped with
(Additional note 2)
Supplementary Note 1: The receiving unit performs phase measurement using the reference signal at different timings for the plurality of carriers using a prescribed timing offset or a timing offset notified from the base station. The device listed.
(Additional note 3)
The terminal according to supplementary note 1, wherein the control unit estimates a timing offset between the plurality of carriers and performs phase measurement on the plurality of carriers at a timing based on the estimated timing offset.
(Additional note 4)
The terminal according to any one of Supplementary Notes 1 to 3, further comprising: a transmitter that transmits capability information to the base station indicating that the terminal has the capability of performing phase measurements at different timings among the plurality of carriers.
(Additional note 5)
a transmitting unit that transmits configuration information of reference signals transmitted by multiple carriers to a terminal;
A base station comprising: a control unit that adjusts transmission timing so that reference signal transmission timings are aligned among the plurality of carriers.
(Additional note 6)
The base station according to supplementary note 5, further comprising: a receiving unit that receives a timing offset used for adjusting the transmission timing from a network device.

The configurations described in any of the above sections provide techniques for reducing the effects of transmission timing errors when using multiple carrier waves with different wavelengths in carrier phase measurement. Further, according to additional notes 2, 3, and 6, timing errors can be appropriately compensated for by using a timing offset. According to Additional Note 4, operations can be performed according to the terminal capabilities.

(Hardware configuration)
The block diagrams (FIGS. 13 and 14) used to explain the above embodiments show blocks in functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of implementing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices. The functional block may be realized by combining software with the one device or the plurality of devices.

Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, These include, but are not limited to, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. I can't. For example, a functional block (configuration unit) that performs transmission is called a transmitting unit or a transmitter. In either case, as described above, the implementation method is not particularly limited.

For example, the base station 10, terminal 20, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. FIG. 15 is a diagram illustrating an example of the hardware configuration of the base station 10, terminal 20, and LMF 30 according to an embodiment of the present disclosure. The base station 10 and terminal 20 described above are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc. Good too.

Note that in the following description, the word "apparatus" can be read as a circuit, a device, a unit, etc. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured not to include some of the devices.

Each function in the base station 10 and the terminal 20 is performed by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002, so that the processor 1001 performs calculations and controls communication by the communication device 1004. This is realized by controlling at least one of reading and writing data in the storage device 1002 and the auxiliary storage device 1003.

The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may be configured with a central processing unit (CPU) that includes interfaces with peripheral devices, a control device, an arithmetic device, registers, and the like. For example, the above-described control unit 140, control unit 240, etc. may be implemented by the processor 1001.

Furthermore, the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes in accordance with these. As the program, a program that causes a computer to execute at least part of the operations described in the above embodiments is used. For example, the control unit 140 of the base station 10 shown in FIG. 13 may be realized by a control program stored in the storage device 1002 and operated on the processor 1001. Further, for example, the control unit 240 of the terminal 20 shown in FIG. 14 may be realized by a control program stored in the storage device 1002 and operated on the processor 1001. Although the various processes described above have been described as being executed by one processor 1001, they may be executed by two or more processors 1001 simultaneously or sequentially. Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunications line.

The storage device 1002 is a computer-readable recording medium, such as at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be configured. The storage device 1002 may be called a register, cache, main memory, or the like. The storage device 1002 can store executable programs (program codes), software modules, and the like to implement a communication method according to an embodiment of the present disclosure.

The auxiliary storage device 1003 is a computer-readable recording medium, such as an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu-ray disk, etc.). -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, etc. The above-mentioned storage medium may be, for example, a database including at least one of the storage device 1002 and the auxiliary storage device 1003, a server, or other suitable medium.

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 a network device, network controller, network card, communication module, etc., for example. The 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. For example, a transmitting/receiving antenna, an amplifier section, a transmitting/receiving section, a transmission path interface, etc. may be realized by the communication device 1004. The transmitting and receiving unit may be physically or logically separated into a transmitting unit and a receiving unit.

The input device 1005 is an input device (eg, 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 performs output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

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

In addition, the base station 10, the terminal 20, and the LMF 30 are equipped with a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc. It may be configured to include hardware, and a part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardwares.

Furthermore, the vehicle 2001 may be equipped with the terminal 20, the base station 10, or the LMF 30. FIG. 16 shows an example of the configuration of vehicle 2001. As shown in FIG. 11, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, a front wheel 2007, a rear wheel 2008, an axle 2009, an electronic control unit 2010, and various sensors 2021 to 2029. , an information service section 2012 and a communication module 2013. The terminal 20 or base station 10 according to each aspect/embodiment described in this disclosure may be applied to a communication device mounted on the vehicle 2001, for example, may be applied to the communication module 2013.

The drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also referred to as a steering wheel), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

The electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and communication port (IO port) 2033. Signals from various sensors 2021 to 2029 provided in the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

Signals from various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the motor current, a front wheel and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, and a front wheel rotation speed signal obtained by an air pressure sensor 2023. and rear wheel air pressure signals, vehicle speed signals acquired by vehicle speed sensor 2024, acceleration signals acquired by acceleration sensor 2025, accelerator pedal depression amount signals acquired by accelerator pedal sensor 2029, and brake pedal sensor 2026. These include a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.

The information service department 2012 controls various devices such as car navigation systems, audio systems, speakers, televisions, and radios that provide (output) various information such as driving information, traffic information, and entertainment information, and these devices. It is composed of one or more ECUs. The information service unit 2012 provides various multimedia information and multimedia services to the occupants of the vehicle 2001 using information acquired from an external device via the communication module 2013 and the like. The information service department 2012 may include an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accepts input from the outside, and an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).

The driving support system unit 2030 includes a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (for example, GNSS, etc.), map information (for example, a high-definition (HD) map, an autonomous vehicle (AV) map, etc.) ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors that prevent accidents and reduce the driver's driving burden. The system is comprised of various devices that provide functions for the purpose and one or more ECUs that control these devices. Further, the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.

Communication module 2013 can communicate with microprocessor 2031 and components of vehicle 2001 via a communication port. For example, the communication module 2013 communicates with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, electronic Data is transmitted and received between the microprocessor 2031, memory (ROM, RAM) 2032, and sensors 2021 to 29 in the control unit 2010.

The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with external devices. For example, various information is transmitted and received with an external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

The communication module 2013 receives signals from the various sensors 2021 to 2028 described above that are input to the electronic control unit 2010, information obtained based on the signals, and input from the outside (user) obtained via the information service unit 2012. At least one of the information based on the information may be transmitted to an external device via wireless communication. The electronic control unit 2010, various sensors 2021-2028, information service unit 2012, etc. may be called an input unit that receives input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above input.

The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device, and displays it on the information service section 2012 provided in the vehicle 2001. The information service unit 2012 is an output unit that outputs information (for example, outputs information to devices such as a display and a speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 2013). may be called. Communication module 2013 also stores various information received from external devices into memory 2032 that can be used by microprocessor 2031 . Based on the information stored in the memory 2032, the microprocessor 2031 controls the drive section 2002, steering section 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheel 2007, rear wheel 2008, and axle 2009 provided in the vehicle 2001. , sensors 2021 to 2029, etc. may be controlled.

(Supplementary information on the embodiment)
Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, modifications, alternatives, replacements, etc. Probably. Although the invention has been explained using specific numerical examples to facilitate understanding of the invention, unless otherwise specified, these numerical values are merely examples, and any appropriate values may be used. The classification of items in the above explanation is not essential to the present invention, and matters described in two or more items may be used in combination as necessary, and matters described in one item may be used in another item. may be applied to the matters described in (unless inconsistent). The boundaries of functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical components. The operations of a plurality of functional sections may be physically performed by one component, or the operations of one functional section may be physically performed by a plurality of components. Regarding the processing procedures described in the embodiments, the order of processing may be changed as long as there is no contradiction. Although the base station 10 and the terminal 20 have been described using functional block diagrams for convenience of process description, such devices may be implemented in hardware, software, or a combination thereof. Software operated by the processor included in the base station 10 according to the embodiment of the present invention and software operated by the processor included in the terminal 20 according to the embodiment of the present invention are respectively random access memory (RAM), flash memory, and read-only memory. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.

Furthermore, the notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods. For example, the notification of information may be 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 a combination thereof. Further, RRC signaling may be called an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

Each aspect/embodiment described in this disclosure is LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system). system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is an integer or decimal number, for example)), FRA (Future Radio Access), NR (new Radio), New radio access ( NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802 Systems that utilize .16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other appropriate systems, and that are extended, modified, created, and defined based on these. The present invention may be applied to at least one of the next generation systems. Furthermore, a combination of a plurality of systems may be applied (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 this specification may be changed as long as there is no contradiction. For example, the methods described in this disclosure use an example order to present elements of the various steps and are not limited to the particular order presented.

In this specification, specific operations performed by the base station 10 may be performed by its upper node in some cases. In a network consisting of one or more network nodes including a base station 10, various operations performed for communication with a terminal 20 are performed by the base station 10 and other network nodes other than the base station 10. It is clear that this can be done by at least one of the following: for example, MME or S-GW (possible, but not limited to). Although the case where there is one network node other than the base station 10 is illustrated above, the other network node may be a combination of multiple other network nodes (for example, MME and S-GW). .

The information, signals, etc. described in this disclosure can be output from an upper layer (or lower layer) to a lower layer (or upper layer). It may be input/output via multiple network nodes.

The input/output information may be stored in a specific location (for example, memory) or may be managed using a management table. Information etc. to be input/output may be overwritten, updated, or additionally written. The output information etc. may be deleted. The input information etc. may be transmitted to other devices.

The determination in the present disclosure may be performed based on a value represented by 1 bit (0 or 1), a truth value (Boolean: true or false), or a comparison of numerical values (e.g. , comparison with a predetermined value).

Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.

Additionally, software, instructions, information, etc. may be sent and received via a transmission medium. For example, if the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to create a website, When transmitted from a server or other remote source, these wired and/or wireless technologies are 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 technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which may be referred to throughout the above description, may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may also be represented by a combination of

Note that terms explained 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 the symbol may be a signal. Also, the signal may be a message. Further, a component carrier (CC) may also be called a carrier frequency, a cell, a frequency carrier, or the like.

As used in this disclosure, the terms "system" and "network" are used interchangeably.

In addition, the information, parameters, etc. described in this disclosure may be expressed using absolute values, relative values from a predetermined value, or using other corresponding information. may be expressed. For example, radio resources may be indicated by an index.

The names used for the parameters mentioned above are not restrictive in any respect. Furthermore, the mathematical formulas etc. using these parameters may differ from those explicitly disclosed in this disclosure. Since the various channels (e.g. PUCCH, PDCCH, etc.) and information elements may be identified by any suitable designation, the various names assigned to these various channels and information elements are in no way exclusive designations. isn't it.

In this disclosure, "Base Station (BS)," "wireless base station," "base station," "fixed station," "NodeB," "eNodeB (eNB)," and "gNodeB ( gNB)”, “access point”, “transmission point”, “reception point”, “transmission/reception point”, “cell”, “sector”, Terms such as "cell group," "carrier," "component carrier," and the like may be used interchangeably. A base station is sometimes referred to by terms such as macrocell, small cell, femtocell, and picocell.

A base station can accommodate one or more (eg, three) cells. If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is divided into multiple subsystems (e.g., small indoor base stations (RRHs)). Communication services can also be provided by Remote Radio Head). The term "cell" or "sector" refers to part or all of the coverage area of a base station and/or base station subsystem that provides communication services in this coverage.

In the present disclosure, the base station transmitting information to the terminal may be read as the base station instructing the terminal to control/operate based on the information.

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

A mobile station is defined by a person 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 It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

At least one of a base station and a mobile station may be called a transmitting device, a receiving device, a communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, or the like. The moving body refers to a movable object, and the moving speed is arbitrary. Naturally, this also includes cases where the moving object is stopped. The mobile objects include, for example, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, carts, rickshaws, ships and other watercraft. , including, but not limited to, airplanes, rockets, artificial satellites, drones (registered trademarks), multicopters, quadcopters, balloons, and objects mounted thereon. Furthermore, the mobile object may be a mobile object that autonomously travels based on a travel command. It may be a vehicle (e.g. car, airplane, etc.), an unmanned moving object (e.g. drone, self-driving car, etc.), or a robot (manned or unmanned). good. Note that at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

Additionally, the base station in the present disclosure may be replaced by a terminal. For example, a configuration in which communication between a base station and a terminal is replaced with communication between a plurality of terminals 20 (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.) Each aspect/embodiment of the present disclosure may be applied. In this case, the terminal 20 may have the functions that the base station 10 described above has. Further, words such as "up" and "down" may be replaced with words corresponding to inter-terminal communication (for example, "side"). For example, uplink channels, downlink channels, etc. may be replaced with side channels.

Similarly, a terminal in the present disclosure may be replaced by a base station. In this case, a configuration may be adopted in which the base station has the functions that the above-described terminal has.

As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of operations. "Judgment" and "decision" include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, and inquiry. (e.g., searching in a table, database, or other data structure), and regarding an ascertaining as a "judgment" or "decision." In addition, "judgment" and "decision" refer to receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and access. (accessing) (e.g., accessing data in memory) may include considering something as a "judgment" or "decision." In addition, "judgment" and "decision" refer to resolving, selecting, choosing, establishing, comparing, etc. as "judgment" and "decision". may be included. In other words, "judgment" and "decision" may include regarding some action as having been "judged" or "determined." Further, "judgment (decision)" may be read as "assuming", "expecting", "considering", etc.

The terms "connected", "coupled", or any variations thereof, refer to any connection or coupling, direct or indirect, between two or more elements and to each other. It may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled." The bonds or connections between elements may be physical, logical, or a combination thereof. For example, "connection" may be replaced with "access." As used in this disclosure, two elements may include one or more electrical wires, cables, and/or printed electrical connections, as well as in the radio frequency domain, as some non-limiting and non-inclusive examples. , electromagnetic energy having wavelengths in the microwave and optical (both visible and non-visible) ranges.

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

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

As used in this disclosure, any reference to elements using the designations "first," "second," etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed or that the first element must precede the second element in any way.

"Means" in the configurations of each of the above devices may be replaced with "unit", "circuit", "device", etc.

Where "include", "including" and variations thereof are used in this disclosure, these terms, like the term "comprising," are inclusive. It is intended that Furthermore, the term "or" as used in this disclosure is not intended to be exclusive or.

A radio frame may be composed of one or more frames in the time domain. Each frame or frames in the time domain may be called a subframe. A subframe may also be composed of one or more slots in the time domain. A subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.

The numerology may be a communication parameter applied to the transmission and/or reception of a certain signal or channel. Numerology includes, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, and transmitter/receiver. It may also indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transceiver in the time domain, and the like.

A slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain. A slot may be a unit of time based on numerology.

A slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot. PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A. PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.

Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals. Other names may be used for the radio frame, subframe, slot, minislot, and symbol.

For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, and one slot or one minislot may be called a TTI. It's okay. In other words, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe. Furthermore, one slot may be called a unit time. The unit time may be different for each cell depending on the numerology.

Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each terminal 20) to each terminal 20 on a TTI basis. Note that the definition of TTI is not limited to this.

The TTI may be a transmission time unit of a channel-coded data packet (transport block), a code block, a codeword, etc., or may be a processing unit of scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.

Note that when one slot or one minislot is called a TTI, one or more TTIs (that is, one or more slots or one or more minislots) may be the minimum time unit for scheduling. Further, the number of slots (minislot number) that constitutes the minimum time unit of the scheduling may be controlled.

A TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc. A TTI that is shorter than the normal TTI may be referred to as an abbreviated TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

Note that long TTI (for example, normal TTI, subframe, etc.) may be read as TTI with a time length exceeding 1 ms, and short TTI (for example, short TTI, etc.) It may also be read as a TTI having the above TTI length.

A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of the numerology, and may be 12, for example. The number of subcarriers included in an RB may be determined based on newerology.

Additionally, the time domain of an RB may include one or more symbols, and may be one slot, one minislot, one subframe, or one TTI in length. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

Note that one or more RBs include physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. May be called.

Additionally, a resource block may be configured by one or more resource elements (REs). For example, 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.

A bandwidth part (BWP) (which may also be called a partial bandwidth or the like) may represent a subset of consecutive common resource blocks (RBs) for a certain numerology in a certain carrier. Here, the common RB may be specified by an RB index based on a common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.

The BWP may include a UL BWP (UL BWP) and a DL BWP (DL BWP). One or more BWPs may be configured within one carrier for a UE.

At least one of the configured BWPs may be active and the UE may not expect to transmit or receive a given signal/channel outside of the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be replaced with "BWP".

The structures of radio frames, subframes, slots, minislots, symbols, etc. described above are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of symbols included in an RB, Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

In this disclosure, when articles are added by translation, such as a, an, and the in English, the present disclosure may include that the nouns following these articles are plural.

In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." Note that the term may also mean that "A and B are each different from C". Terms such as "separate" and "coupled" may also be interpreted similarly to "different."

Each aspect/embodiment described in this disclosure may be used alone, in combination, or may be switched and used in accordance with execution. In addition, notification of prescribed information (for example, notification of "X") is not limited to being done explicitly, but may also be done implicitly (for example, not notifying the prescribed information). Good too.

Although the present disclosure has been described in detail above, it is clear for those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the present disclosure as determined by the claims. Therefore, the description of the present disclosure is for the purpose of illustrative explanation and is not intended to have any limiting meaning on the present disclosure.

10 Base station 110 Transmitting section 120 Receiving section 130 Setting section 140 Control section 20 Terminal 210 Transmitting section 220 Receiving section 230 Setting section 240 Control section 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Driving part 2003 Restoration Part 2004 Axel Pedal 2005 Brake Pedal 2006 Shift Lever 2007 Front wheels 2008 Bearing 2009 Axis 2010 Electronic Control Division 2012 Electronic Control Division 20133 Communication Modular 2021 Current sensor 2022 Round Sensor 2023 Air pressure sensor 2024 vehicle speed Sensen Sa 2025 acceleration sensor 2026 brake Pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving support system section 2031 Microprocessor 2032 Memory (ROM, RAM)
2033 Communication port (IO port)

Claims

a receiving unit that receives configuration information of reference signals transmitted on multiple carriers from a base station;
a control unit that assumes that the timing of performing phase measurement for positioning is different between the plurality of carriers;
A terminal equipped with
The receiving unit performs phase measurement using the reference signal at different timings for the plurality of carriers using a prescribed timing offset or a timing offset notified from the base station. The device listed.
The terminal according to claim 1, wherein the control unit estimates a timing offset between the plurality of carriers and performs phase measurement on the plurality of carriers at a timing based on the estimated timing offset.
The terminal according to claim 1, further comprising: a transmitting unit that transmits capability information indicating that the terminal has the capability of performing phase measurements at different timings among the plurality of carriers to the base station.
a transmitting unit that transmits configuration information of reference signals transmitted by multiple carriers to a terminal;
A base station comprising: a control unit that adjusts transmission timing so that reference signal transmission timings are aligned among the plurality of carriers.
The base station according to claim 5, further comprising: a receiving unit that receives a timing offset used for adjusting the transmission timing from a network device.