Terminal, base station and communication method

Abstract

This terminal comprises a transmission unit that transmits information indicating a terminal capability related to position measurement used in dynamic DL-UL switching or setting of a duplex method, and a control unit that presumes transmission or reception of a reference signal for position measurement using the dynamic DL-UL switching or the setting of the duplex method, in accordance with the terminal capability.

Description

[Technical Field]

[0001] The present invention relates to a terminal, a base station, and a communication method in a wireless communication system. [Background technology]

[0002] For NR (New Radio) (also known as "5G"), the successor system to LTE (Long Term Evolution), technologies that satisfy requirements such as a large-capacity system, high-speed data transmission speed, low latency, simultaneous connection of a large number of terminals, low cost, and low power consumption are being considered (for example, Non-Patent Document 1).

[0003] In addition, other duplexing schemes are being considered for NR that provide the advantages of both FDD and TDD while eliminating their disadvantages, such as Cross Division Duplex (XDD) and Full Duplex (FD). [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] 3GPP TS 38.300 V16.7.0(2021-09) Summary of the Invention [Problem to be solved by the invention]

[0005] Duplexing methods may be discussed in NR Release 18 and its successor, 6G. For example, several duplexing configurations are possible depending on the allocation of frequency resources and whether base stations and terminals support the duplexing methods. However, there is a problem in that the operation of base stations and terminals corresponding to the duplexing methods has not been clarified.

[0006] The present invention has been made in view of the above points, and has as its object to clarify the operation of a base station or terminal compatible with a duplex system. [Means for solving the problem]

[0007] According to the disclosed technology, Whether or not it supports the transmission or reception of reference signals for positioning using Cross Division Duplex (XDD), or Dynamic DL-UL Switching of use Indicates whether the device supports the transmission or reception of reference signals for positioning Terminal Capabilities Information A transmitting unit that transmits and the terminal capability information Depending on the Reference signal for positioning using XDD or a control unit that assumes transmitting or receiving a reference signal for positioning using the dynamic DL-UL switching. The transmitting unit transmits request information including information indicating enabling or disabling of the XDD or the dynamic DL-UL switching in an uplink. A terminal is provided. [Effects of the Invention]

[0008] The disclosed technology provides a technology that makes it possible to clarify the operation of a base station or a terminal that supports a duplex method. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention. [Figure 2] FIG. 10 is a diagram for explaining duplex option A-1. [Figure 3] FIG. 10 is a diagram for explaining duplex option A-2. [Figure 4] FIG. 10 is a diagram for explaining duplex option B-1. [Figure 5] FIG. 10 is a diagram for explaining duplex option B-2. [Figure 6] FIG. 2 is a first diagram illustrating an example of a procedure for positioning according to the first embodiment of the present invention. [Figure 7] FIG. 10 is a second diagram illustrating an example of a procedure for positioning according to the first embodiment of the present invention. [Figure 8] FIG. 10 is a first diagram illustrating an example of a procedure for positioning according to Example 2 of the embodiment of the present invention. [Figure 9]FIG. 10 is a second diagram illustrating an example of a procedure for positioning according to Example 2 of the embodiment of the present invention. [Figure 10] FIG. 10 is a third diagram illustrating an example of a procedure for positioning according to Example 2 of the embodiment of the present invention. [Figure 11] FIG. 10 is a diagram illustrating an example of an allocation pattern according to Example 3 of the embodiment of the present invention. [Figure 12] FIG. 10 is a first diagram illustrating an example of allocation of reference signals according to Example 3 of the embodiment of the present invention. [Figure 13] FIG. 10 is a second diagram illustrating an example of allocation of reference signals according to Example 3 of the embodiment of the present invention. [Figure 14] FIG. 10 is a first diagram for explaining parameters related to a reference signal according to Example 3 of the embodiment of the present invention. [Figure 15] FIG. 10 is a second diagram for explaining parameters related to a reference signal according to Example 3 of the embodiment of the present invention. [Figure 16] FIG. 10 is a third diagram for explaining parameters related to a reference signal according to Example 3 of an embodiment of the present invention. [Figure 17] FIG. 10 is a fourth diagram for explaining parameters related to a reference signal according to Example 3 of the embodiment of the present invention. [Figure 18] FIG. 10 is a first diagram for explaining muting options for a reference signal according to Example 3 of the embodiment of the present invention. [Figure 19] FIG. 10 is a second diagram for explaining muting options for a reference signal according to Example 3 of the embodiment of the present invention. [Figure 20] FIG. 2 is a diagram illustrating an example of a functional configuration of a base station according to an embodiment of the present invention. [Figure 21] FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal according to an embodiment of the present invention. [Figure 22] FIG. 2 is a diagram illustrating an example of a hardware configuration of a base station or a terminal according to an embodiment of the present invention. [Figure 23] 1 is a diagram showing an example of a configuration of a vehicle according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described 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.

[0011] In the operation of the wireless communication system according to the embodiment of the present invention, existing technologies are used as appropriate. However, the existing technologies are, for example, but not limited to, the existing LTE. Furthermore, the term "LTE" used in this specification has a broad meaning including LTE-Advanced and systems subsequent to LTE-Advanced (e.g., NR) unless otherwise specified.

[0012] Furthermore, in the embodiments of the present invention described below, terms used in existing LTE, such as SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), and PUSCH (Physical Uplink Shared Channel), are used. This is for convenience of description, and similar signals, functions, etc. may be referred to by other names. Furthermore, the above-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even signals used in NR are not necessarily designated as "NR-".

[0013] Furthermore, in the embodiments of the present invention, the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or other methods (for example, Flexible Duplex, etc.).

[0014] Furthermore, in the embodiments of the present invention, when radio parameters and the like are "configured," it may mean that predetermined values ​​are pre-configured, or that radio parameters notified from the base station 10 or the terminal 20 are set.

[0015] (System Configuration) FIG. 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention. As shown in Fig. 1, a wireless communication system according to an embodiment of the present invention includes a base station 10 and a terminal 20. Although Fig. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.

[0016] 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 wireless signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of Orthogonal Frequency Division Multiplexing (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.

[0017] The base station 10 transmits a synchronization signal and system information to the terminal 20. The synchronization signal is, for example, NR-PSS and NR-SSS. The system information is transmitted, for example, via the NR-PBCH and is also referred to as broadcast information. The synchronization signal and system information may be referred to as an SSB (SS / PBCH block). As shown in FIG. 1 , the base station 10 transmits control signals or data to the terminal 20 via DL (Downlink) and receives control signals or data from the terminal 20 via UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming. Furthermore, both the base station 10 and the terminal 20 are capable of applying MIMO (Multiple Input Multiple Output) communication to DL or UL. Furthermore, both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell) and a primary cell (PCell) using Carrier Aggregation (CA). Furthermore, the terminal 20 may perform communication via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 using DC (Dual Connectivity).

[0018] 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 an 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 utilizing various communication services provided by the wireless communication system. The terminal 20 also receives various reference signals transmitted from the base station 10 and measures the propagation path quality based on the reception results of the reference signals. The terminal 20 may also be referred to as a UE, and the base station 10 may also be referred to as a gNB.

[0019] (duplex method) Next, we will explain the duplex method. In LTE, frequency division duplex (FDD) is mainly used, and time division duplex (TDD) is also supported.

[0020] In NR, TDD was the main focus, with FDD also being supported. One example is the migration of LTE bands.

[0021] One advantage of FDD is that it allows downlink and uplink transmissions to be performed simultaneously, which reduces communication delays. However, the downlink / uplink resource ratio cannot be flexibly changed and is fixed at a 1:1 resource ratio, for example.

[0022] One advantage of TDD is that it is easy to change the amount of downlink or uplink resources. In a typical environment with heavy downlink traffic, increasing downlink resources can improve downlink throughput. However, a limited amount of uplink time resources can degrade latency performance and potentially degrade uplink coverage.

[0023] Therefore, in NR, other duplexing schemes are being considered to enable the advantages of both FDD and TDD while eliminating their disadvantages, such as XDD (Cross Division Duplex) and FD (Full Duplex).

[0024] XDD is a duplexing method in which transmission and reception are performed simultaneously at the same time but using different frequency resources at either or both the base station and the terminal.

[0025] FD is a duplexing method in which transmission and reception are performed simultaneously using the same frequency and time resources at either or both the base station and the terminal.

[0026] In NR Release 18 and 6G, the duplexing schemes for XDD and FD may be discussed. For example, the following duplexing scheme configurations are possible depending on the frequency resource allocation and whether the base station and terminal support the duplexing schemes:

[0027] <Option A-1> Figure 2 is a diagram explaining the duplexing option A-1. The duplexing option A-1 is a method in which frequency resources are divided into uplink and downlink. Also, the same terminal is assumed to perform only one-way communication. The same base station performs two-way communication simultaneously with different terminals.

[0028] For example, as shown in FIG. 2, the base station 10 performs uplink communication with the terminal 20a and downlink communication with the terminal 20b in the same time resource.

[0029] In Option A-1, information indicating the communication direction of time resources and frequency resources is set for each base station. The duplex method of Option A-1 differs from FDD in that it allows communication only on the downlink or only on the uplink, and in the gap distance between each band.

[0030] <Option A-2> Figure 3 is a diagram for explaining the duplexing option A-2. The duplexing option A-2 is a method in which frequency resources overlap between the uplink and downlink. Also, the same terminal is assumed to perform only one-way communication. The same base station performs two-way communication simultaneously with different terminals.

[0031] For example, as shown in FIG. 3, the base station 10 performs uplink communication with the terminal 20a and downlink communication with the terminal 20b using the same time resource and the same frequency resource.

[0032] In Option A-2, information indicating the communication direction of time resources and frequency resources is set for each base station and each terminal. However, it is necessary to clarify the operation when downlink communication and downlink communication collide at the terminal.

[0033] <Option B-1> Figure 4 is a diagram for explaining duplex option B-1. In the duplex option B-1, frequency resources are divided into uplink and downlink. It also assumes that the same terminal performs bidirectional communication. The same base station simultaneously performs bidirectional communication with the same terminal.

[0034] For example, as shown in FIG. 4, the base station 10 and the terminal 20 perform uplink communication and downlink communication using different frequency resources in the same time resource.

[0035] In Option B-1, information indicating the communication direction of time resources and frequency resources is set for each base station. Specifically, information indicating the communication direction for each time resource and frequency resource as a pattern is set based on the constraints of the terminal.

[0036] <Option B-2> Figure 5 is a diagram for explaining the duplexing option B-2. The duplexing option B-2 is a method in which frequency resources overlap between the uplink and downlink. It also assumes that the same terminal performs bidirectional communication. The same base station simultaneously performs bidirectional communication with the same terminal.

[0037] For example, as shown in FIG. 5, the base station 10 and the terminal 20 perform uplink communication and downlink communication using the same time resource and the same frequency resource.

[0038] In Option B-2, information indicating the communication direction of time resources and frequency resources is set for each base station and each terminal. In this case, if any channel or signal can be transmitted, there is no impact on the specifications. However, if the signal transmission method is changed, such as by changing the beam or power in the event of a collision, there will be an impact on the specifications.

[0039] In addition, in NR, a function for dynamically switching between downlink and uplink (dynamic DL-UL switching) (hereinafter also referred to as dynamic DL-UL switching) is being considered in relation to each of the above-mentioned duplexing methods.

[0040] (Previous problems) Conventionally, when transmitting downlink or uplink reference signals for positioning continuously for a certain period of time to perform positioning with high accuracy, the relationship with the duplexing method has not been specified. For example, due to the duplexing method setting (hereinafter also referred to as XDD setting, although XDD setting may include FD setting) or dynamic DL-UL switching, it may not be possible to transmit signals continuously for a certain period of time.

[0041] In addition, in NR Release 16 / 17, it is expected that the number of combinations, symbol length, starting position, etc. will be configured by RRC. However, since UL-PRS (Positioning Reference Signal) is assigned to consecutive symbols, there is a problem that it cannot support flexible configuration of dynamic DL-UL switching.

[0042] (Outline of this embodiment) Therefore, in order to solve the above-mentioned conventional problems, an example will be described in which the relationship between the duplex mode and the positioning is clarified. Hereinafter, examples 1 to 3 will be described as specific examples of this embodiment.

[0043] Example 1 The terminal 20 may report to the base station 10 terminal capability information related to positioning used in XDD configuration or dynamic DL-UL switching.

[0044] 6 is a first diagram illustrating an example of a procedure for positioning according to Example 1 of the embodiment of the present invention. The terminal 20 transmits terminal capability information related to positioning to the base station 10 (step S11). The base station 10 transmits control information related to positioning to the terminal 20 (step S12).

[0045] Next, the base station 10 transmits a reference signal (DL-PRS) for positioning to the terminal 20 (step S13). The terminal 20 performs positioning based on the reference signal and transmits report information of the positioning to the base station 10 (step S14).

[0046] 7 is a second diagram illustrating an example of a procedure for positioning according to Example 1 of the embodiment of the present invention. The terminal 20 transmits terminal capability information related to positioning to the base station 10 (step S21). The base station 10 transmits control information related to positioning to the terminal 20 (step S22).

[0047] Next, the terminal 20 transmits a reference signal (UL-PRS) for positioning to the base station 10 (step S23). The base station 10 (or a network node connected to the base station 10, etc.) locates the position of the terminal 20 based on the reference signal.

[0048] The terminal capability information may be information supported in NR Release 16 / 17, such as PRS processing capability, PRS resource capability, TEG capability, LOS (Line-of-Sight) / NLOS (Non-Line-of-Sight) detection capability, etc.

[0049] The terminal capability information may be information indicating whether a request function related to XDD configuration or dynamic DL-UL switching is supported. For example, the terminal capability information may be information indicating whether a function of transmitting a request message via RRC, a function of transmitting a request message via MAC-CE, a function of transmitting a request message via L1 signaling, or a function of transmitting a request message via LLP is supported.

[0050] The terminal capability information may be information indicating whether the terminal supports transmission or reception of PRS using a duplexing method or dynamic DL-UL switching.

[0051] The terminal capability information may be information indicating a duplexing mode capable of transmitting or receiving a PRS or parameters of dynamic DL-UL switching. For example, the terminal capability information may be information indicating a frequency band for supporting a duplexing mode or dynamic DL-UL switching, such as FR1 only, FR2 only, or both FR1 and FR2 frequency bands. Furthermore, the terminal capability information may be, for example, the granularity of time or frequency resources, the maximum number of downlink and uplink multiplexing per CC, and the minimum number of PRBs.

[0052] The terminal capability information may be information indicating a resource granularity for dropping low-priority channels or signals when dynamic DL-UL switching is assumed to be performed at the timing when the terminal 20 is receiving a downlink PRS or transmitting an uplink PRS. For example, the terminal capability information may be in units of a PRS resource set, a PRS resource, a symbol, a slot, or a subframe.

[0053] The terminal 20 may report the terminal capability information for each positioning method (for example, Time Difference of Arrival (TDOA), Round-Trip Time (M-RTT), etc.).

[0054] According to this embodiment, it is possible to appropriately set a duplexing method or a PRS using dynamic DL-UL switching depending on the terminal capability.

[0055] Example 2 In this embodiment, an example will be described in which the terminal 20 transmits request information regarding XDD configuration or dynamic DL-UL switching.

[0056] 8 is a first diagram illustrating an example of a procedure for positioning according to Example 2 of the embodiment of the present invention. The terminal 20 transmits request information regarding XDD configuration or dynamic DL-UL switching to the base station 10 (step S31).

[0057] Here, the terminal 20 may transmit the request information to the base station 10, for example, in the RRC, MAC-CE, or UCI.

[0058] The base station 10 transmits control information related to positioning to the terminal 20 (step S32). Then, the base station 10 transmits a reference signal for positioning to the terminal 20 (step S33). The resources of the reference signal transmitted in step S33 are scheduled by a duplexing method or dynamic DL-UL switching based on the request information transmitted in step S31. Then, the terminal 20 transmits report information of the positioning to the base station 10 (step S34).

[0059] 9 is a second diagram illustrating an example of a procedure for positioning according to Example 2 of the embodiment of the present invention. LMF (Location Management Function) 11 is a network node included in the core network, and has a function for managing location information of terminals.

[0060] The LMF 11 transmits request information related to XDD configuration or dynamic DL-UL switching to the base station 10 (step S41). The base station 10 transmits control information related to positioning to the terminal 20 (step S42).

[0061] Next, the base station 10 transmits a reference signal for positioning to the terminal 20 (step S43). The resources of the reference signal transmitted in step S43 are scheduled by the duplexing method or dynamic DL-UL switching based on the request information transmitted in step S41. Next, the terminal 20 transmits report information of the positioning to the base station 10 (step S44).

[0062] 10 is a third diagram illustrating an example of a positioning procedure according to Example 2 of the embodiment of the present invention. The terminal 20 transmits request information regarding XDD configuration or dynamic DL-UL switching to the LMF 11 via the base station 10 (step S51).

[0063] Here, the terminal 20 may transmit the request information using, for example, LPP (LTE Positioning Protocol). In this case, the base station 10 simply relays the information transmitted using LPP. Therefore, the LMF 11 transmits request information regarding XDD configuration or dynamic DL-UL switching to the base station 10 (step S52). The base station 10 transmits control information regarding positioning to the terminal 20 (step S53).

[0064] Next, the base station 10 transmits a reference signal for positioning to the terminal 20 (step S54). The resources of the reference signal transmitted in step S54 are scheduled by the duplexing method or dynamic DL-UL switching based on the request information transmitted in step S51. Next, the terminal 20 transmits report information of the positioning to the base station 10 (step S55).

[0065] The request information may include, for example, information indicating enabling / disabling of XDD configuration or dynamic DL-UL switching. The request information may also include, for example, information indicating an XDD configuration pattern or a pattern index. The request information may also include information indicating the number of consecutive symbols, the number of PRBs, and the period for each slot of DL-PRS or UL-PRS.

[0066] According to this embodiment, the terminal 20 or the LMF 11 requests the base station 10 to reserve DL-PRS or UL-PRS resources depending on the positioning situation, thereby preventing a decrease in positioning accuracy.

[0067] Example 3 In this embodiment, an example is shown in which the terminal 20 assumes resource allocation of discontinuous UL-PRSs.

[0068] The terminal 20 may assume that a non-contiguous resource allocation pattern is specified.

[0069] Fig. 11 is a diagram illustrating an example of an allocation pattern according to a third example of an embodiment of the present invention. As shown in Fig. 11, an allocation pattern is defined for each index. The terminal 20 may assume that an index indicating an allocation pattern is notified by RRC, MAC-CE, or DCI. Alternatively, the terminal 20 may assume that multiple indexes are configured by RRC, and one of the indexes is activated by MAC-CE or specified by DCI.

[0070] 12 is a first diagram illustrating an example of reference signal allocation according to Example 3 of the embodiment of the present invention. FIG. 12 is an example of UL-PRS allocation when index A shown in FIG. 11 is notified.

[0071] Fig. 13 is a second diagram illustrating an example of reference signal allocation according to Example 3 of the embodiment of the present invention. Fig. 12 is a diagram illustrating an example of UL-PRS allocation when index B shown in Fig. 11 is notified.

[0072] The terminal 20 may assume that in addition to the UL-PRS parameters specified in NR Release 16 or 17, the following parameters are notified:

[0073] For example, the terminal 20 may assume that the second position (third position, fourth position, . . . ) and the set length are signaled as parameters.

[0074] The second position is information indicating the symbol position of the second set when there are two or more sets of UL-PRS positions in one slot in the time direction. Similarly, the third position, fourth position, etc. are information indicating the symbol positions of the third set, fourth set, etc. when there are three or more sets of UL-PRS positions in one slot in the time direction.

[0075] The set length is information indicating the symbol length of each set in the time direction, where each set is a group of UL-PRS resources allocated consecutively in the time direction.

[0076] Fig. 14 is a first diagram illustrating parameters related to reference signals according to a third embodiment of the present invention. Fig. 14 shows an example of UL-PRS allocation when the following parameters of the UL-PRS specified in NR Release 16 or 17 are reported: a start position of 0, a combination size of 2, the number of symbols per slot of 2, and a frequency position of {0, 1}, and further the following parameters are reported: a second position of 10 and a set length of 1.

[0077] Fig. 15 is a second diagram illustrating parameters related to reference signals according to Example 3 of the embodiment of the present invention. Fig. 15 shows an example of UL-PRS allocation when the following parameters of UL-PRS specified in NR Release 16 or 17 are notified: start position is 0, combination size is 4, number of symbols per slot is 4, and frequency position is {0, 2, 1, 3}, and further the following parameters are notified: second position is 10, and set length is 2.

[0078] Terminal 20 may assume that an interval length and a set length are notified as parameters. When two or more sets of UL-PRSs are located in one slot in the time direction, the interval length is a symbol length indicating the interval between each set in the time direction.

[0079] Fig. 16 is a third diagram illustrating parameters related to reference signals according to Example 3 of the embodiment of the present invention. Fig. 16 shows an example of UL-PRS allocation when the following parameters of UL-PRS specified in NR Release 16 or 17 are reported: start position: 0, combination size: 2, number of symbols per slot: 2, frequency position: {0, 1}, and further the following parameters: interval length: 9, set length: 1.

[0080] 14 and 16 show the same allocation pattern with different parameters.

[0081] Fig. 17 is a fourth diagram illustrating parameters related to reference signals according to Example 3 of the embodiment of the present invention. Fig. 17 illustrates an example of UL-PRS allocation when the following parameters of UL-PRS specified in NR Release 16 or 17 are reported: start position: 0, combination size: 4, number of symbols per slot: 4, frequency position: {0, 2, 1, 3}, and further the following parameters: interval length: 7, set length: 2.

[0082] 15 and 17 show the same allocation pattern with different parameters.

[0083] Note that multiple interval lengths may be reported. Specifically, when there are N sets of UL-PRSs positioned in the time direction within one slot, terminal 20 may assume that N-1 interval lengths (first interval length, second interval length, . . . , N-1th interval length) and set lengths are reported as parameters.

[0084] The terminal 20 may assume that muting options are signaled in addition to the parameters of the UL-PRS specified in NR Release 16 or 17. The muting options of the UL-PRS may be similar to the muting options of the DL-PRS specified in NR Release 16 or 17.

[0085] For example, the terminal 20 may assume that it is notified of the muting position of the UL-PRS, which is the position in the time direction where the UL-PRS is muted.

[0086] Fig. 18 is a first diagram illustrating muting options for reference signals according to a third embodiment of the present invention. Fig. 18 shows an example of UL-PRS allocation when the following parameters of the UL-PRS specified in NR Release 16 or 17 are notified: a start position of 1, a combination size of 4, the number of symbols per slot of 4, and frequency positions of {0, 2, 1, 3}, and further the following parameters are notified: a second position of 10, a set length of 4, and a muting position of {2, 3}.

[0087] The terminal 20 may also assume that a muting PRB of the UL-PRS is notified. The muting PRB is a physical resource block in which the UL-PRS is muted. The muting PRB may be a muting pattern in which multiple PRBs to be muted are configured. The muting pattern may reuse the SRS-Pos resource allocation specified in NR Release 16 / 17.

[0088] Fig. 19 is a second diagram for explaining muting options for a reference signal according to Example 3 of the embodiment of the present invention, which illustrates an example of resource allocation when muting pattern A and muting pattern B are notified as parameters.

[0089] The terminal 20 may also assume that multiple muting patterns are configured in the RRC, and one of the options is activated in the MAC-CE or specified in the DCI.

[0090] According to this embodiment, it is possible to transmit UL-PRS at the symbol level while avoiding downlink resources.

[0091] In the above-described embodiment, "dynamic DL-UL switching" may be rephrased as "symbol switching," "symbol level switching," "symbol format indication," etc.

[0092] Furthermore, "discontinuous resource allocation" may be rephrased as "non-contiguous resource allocation," "extended resource allocation," and the like.

[0093] Furthermore, "UL-PRS" may be rephrased as "SRS for positioning (SRS-pos)" or the like.

[0094] (Device configuration) Next, an example of the functional configuration of the base station 10 and the terminal 20 that execute the processes and operations described above will be described.

[0095] <Base station 10> Fig. 20 is a diagram showing an example of the functional configuration of the base station 10. As shown in Fig. 20, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Fig. 20 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations according to the embodiment of the present invention. Furthermore, the transmitting unit 110 and the receiving unit 120 may be collectively referred to as a communication unit.

[0096] The transmitter 110 has a function of generating a signal to be transmitted to the terminal 20 and transmitting the signal wirelessly. The receiver 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of a higher layer from the received signals. The transmitter 110 also has a function of transmitting, to the terminal 20, an NR-PSS, an NR-SSS, an NR-PBCH, a DL / UL control signal, DCI via a PDCCH, data via a PDSCH, and the like.

[0097] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in a storage device provided in the setting unit 130, and reads out the information from the storage device as needed.

[0098] The control unit 140 schedules DL reception or UL transmission of the terminal 20 via the transmission unit 110. The control unit 140 also includes a function for performing LBT. The functional unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the reception unit 120. The transmission unit 110 may also be called a transmitter, and the reception unit 120 may also be called a receiver.

[0099] <Terminal 20> Fig. 21 is a diagram showing an example of the functional configuration of the terminal 20. As shown in Fig. 21, the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Fig. 21 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations related to the embodiment of the present invention. The transmitting unit 210 and the receiving unit 220 may be collectively referred to as a communication unit.

[0100] The transmitter 210 creates a transmission signal from transmission data and transmits the transmission signal wirelessly. The receiver 220 wirelessly receives various signals and acquires a higher layer signal from the received physical layer signal. The receiver 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals, DCI via PDCCH, data via PDSCH, and the like transmitted from the base station 10. For example, the transmitter 210 may transmit a PSCCH (Physical Sidelink Control Channel), a PSSCH (Physical Sidelink Shared Channel), a PSDCH (Physical Sidelink Discovery Channel), a PSBCH (Physical Sidelink Broadcast Channel), and the like to another terminal 20 as D2D communication, and the receiver 120 may receive the PSCCH, PSSCH, PSDCH, PSBCH, and the like from the other terminal 20.

[0101] The setting unit 230 stores various setting information received by the receiving unit 220 from the base station 10 or other terminals in a storage device provided in the setting unit 230, and reads the information from the storage device as needed. The setting unit 230 also stores setting information that is set in advance. The control unit 240 controls the terminal 20. The control unit 240 also includes a function for performing LBT.

[0102] The terminal of this embodiment may be configured as the terminals shown in the following items, and may implement the following communication methods.

[0103] <Configuration of this embodiment> (Section 1) a transmitter for transmitting information indicating a terminal capability related to positioning used in duplex setting or dynamic DL-UL switching; and a control unit that assumes transmitting or receiving a reference signal for positioning using the duplexing method setting or the dynamic DL-UL switching according to the terminal capability. Terminal. (Section 2) The information indicating the terminal capability includes information indicating whether the terminal supports a required function related to the duplex mode setting or the dynamic DL-UL switching. 1. The terminal described in paragraph 1. (Section 3) The transmitter transmits request information regarding the duplex mode setting or the dynamic DL-UL switching in an uplink. A terminal according to paragraph 1 or 2. (Section 4) a receiving unit for receiving, from a terminal, information indicating a terminal capability related to positioning used in setting a duplex mode or dynamic DL-UL switching; and a control unit that assumes transmitting or receiving a reference signal for positioning using the duplexing method setting or the dynamic DL-UL switching according to the terminal capability. Base station. (Section 5) transmitting information indicating terminal capabilities related to positioning for use in duplex configuration or dynamic DL-UL switching; and assuming that a reference signal for positioning using the dynamic DL-UL switching or the duplex mode setting is transmitted or received according to the terminal capability. The communication method implemented by the device.

[0104] Any of the above configurations provides a technique that enables clarifying the operation of a base station or terminal corresponding to a duplex mode. According to the second clause, a reference signal can be transmitted or received depending on whether the terminal supports a request function for setting a duplex mode or the dynamic DL-UL switching. According to the third clause, request information for setting a duplex mode or the dynamic DL-UL switching can be transmitted to a base station.

[0105] (Hardware configuration) The block diagrams (FIGS. 20 and 21) used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining the single device or the multiple devices with software.

[0106] Functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocation, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0107] For example, the base station 10, the terminal 20, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 22 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The base station 10 and the terminal 20 described above may be 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.

[0108] In the following description, the term "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 the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0109] Each function in the base station 10 and the terminal 20 is realized by loading predetermined software (programs) onto hardware such as the processor 1001, the memory device 1002, etc., so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls at least one of reading and writing data in the memory device 1002 and the auxiliary memory device 1003.

[0110] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 140, control unit 240, etc. may be realized by the processor 1001.

[0111] 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 into the storage device 1002, and executes various processes in accordance with the programs. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 140 of the base station 10 shown in FIG. 20 may be implemented by a control program stored in the storage device 1002 and executed by the processor 1001. Furthermore, for example, the control unit 240 of the terminal 20 shown in FIG. 21 may be implemented by a control program stored in the storage device 1002 and executed by the processor 1001. While the above-described various processes have been described as being executed by one processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The programs may be transmitted from a network via a telecommunications line.

[0112] The storage device 1002 is a computer-readable recording medium and may be configured, for example, by at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), etc. The storage device 1002 may also be called a register, a cache, a main memory, etc. The storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.

[0113] The secondary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray disc), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy disk, a magnetic strip, etc. The above-mentioned storage medium may be, for example, a database, a server, or other suitable medium including at least one of the storage device 1002 and the secondary storage device 1003.

[0114] 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, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, a transmission / reception antenna, an amplifier unit, a transmission / reception unit, a transmission path interface, etc. may be realized by the communication device 1004. The transmission / reception unit may be implemented as a transmission unit and a reception unit that are physically or logically separated.

[0115] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives 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 be integrated into one device (for example, a touch panel).

[0116] Furthermore, 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 between each device.

[0117] Furthermore, base station 10 and terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

[0118] Fig. 23 shows an example configuration of a vehicle 2001. As shown in Fig. 23, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in the present disclosure may be applied to a communication device mounted on the vehicle 2001, and may be applied to the communication module 2013, for example.

[0119] The drive unit 2002 is configured, for example, by an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a handle), 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.

[0120] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0121] The signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 2022, an air pressure signal of the front and rear wheels obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

[0122] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing various types of information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 2012 uses information obtained from external devices via the communication module 2013, etc., to provide various types of multimedia information and multimedia services to the occupants of the vehicle 2001.

[0123] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driver's driving burden, such as a millimeter-wave radar, a LiDAR (Light Detection and Ranging), a camera, a positioning locator (e.g., GNSS, etc.), map information (e.g., high-definition (HD) map, autonomous vehicle (AV) map, etc.), a gyro system (e.g., an IMU (Inertial Measurement Unit), an INS (Inertial Navigation System), etc.), an AI (Artificial Intelligence) chip, and an AI processor, as well as one or more ECUs that control these devices. The driving assistance system unit 2030 also transmits and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0124] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 29, which are provided in the vehicle 2001.

[0125] 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 an external device. For example, it transmits and receives various information to and from the 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.

[0126] The communication module 2013 transmits, via wireless communication to an external device, a current signal from the current sensor that is input to the electronic control unit 2010. The communication module 2013 also transmits, via wireless communication to an external device, the rotation speed signals of the front and rear wheels acquired by a rotation speed sensor 2022, the air pressure signals of the front and rear wheels acquired by an air pressure sensor 2023, the vehicle speed signal acquired by a vehicle speed sensor 2024, the acceleration signal acquired by an acceleration sensor 2025, the accelerator pedal depression amount signal acquired by an accelerator pedal sensor 2029, the brake pedal depression amount signal acquired by a brake pedal sensor 2026, the shift lever operation signal acquired by a shift lever sensor 2027, and the detection signals for detecting obstacles, vehicles, pedestrians, etc. acquired by an object detection sensor 2028, which are input to the electronic control unit 2010.

[0127] The communication module 2013 receives various information (traffic information, traffic signal information, inter-vehicle information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle 2001. The communication module 2013 also stores the various information received from the external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.

[0128] (Supplementary explanation of 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, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention; two or more items may be combined as needed, and items described in one item may apply to items described in another item (unless inconsistent). The boundaries between functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of the processing steps described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, the base station 10 and terminal 20 have been described using functional block diagrams. However, such devices may be implemented using hardware, software, or a combination thereof. The software operated by the processor of the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor of the terminal 20 in accordance with an embodiment of the present invention may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.

[0129] Furthermore, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination thereof. Furthermore, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0130] Each aspect / embodiment described in the present disclosure may be any of the following: LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or decimal number)), 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 802.16 (WiMAX (registered trademark)), IEEE The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wideband), Bluetooth (registered trademark), or other appropriate systems, and next-generation systems that are extended, modified, created, or defined based on these systems. The present invention may also be applied to a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G).

[0131] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described herein may be changed unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order and are not limited to the particular order presented.

[0132] In this specification, a specific operation that is described as being performed by the base station 10 may also be performed by its upper node in some cases. In a network consisting of one or more network nodes having the base station 10, it is clear that various operations performed for communication with the terminal 20 may be performed by at least one of the base station 10 and another network node other than the base station 10 (such as, but not limited to, an MME or an S-GW). Although the above example illustrates a case where there is one other network node other than the base station 10, the other network node may be a combination of multiple other network nodes (such as an MME and an S-GW).

[0133] The information or signals described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input / output via multiple network nodes.

[0134] Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be sent to another device.

[0135] In the present disclosure, the determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a numerical comparison (e.g., comparison with a predetermined value).

[0136] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0137] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0138] 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. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0139] 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 a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

[0140] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0141] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by an index.

[0142] The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical expressions using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0143] In this disclosure, terms such as "base station (BS)," "radio base station," "base station," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0144] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication service within this coverage.

[0145] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0146] A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0147] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile body, or the mobile body itself. The mobile body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may also include 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.

[0148] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)). In this case, the terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0149] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station may be configured to have the functions of the user terminal described above.

[0150] As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching in a table, database, or other data structure), ascertaining, and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like. Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0151] The terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0152] The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

[0153] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0154] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0155] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0156] When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Furthermore, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0157] A radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0158] Numerology may be communication parameters that apply to at least one of transmission and reception of a signal or channel, such as subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transceiver in the frequency domain, and specific windowing operations performed by the transceiver in the time domain.

[0159] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may be a time unit based on numerology.

[0160] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0161] The radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals, and may be referred to by other names corresponding to the radio frame, subframe, slot, minislot, and symbol.

[0162] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0163] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units. Note that the definition of TTI is not limited to this.

[0164] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0165] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0166] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0167] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0168] A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on numerology.

[0169] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0170] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, or the like.

[0171] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0172] A Bandwidth Part (BWP) (which may also be referred to as a fractional bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a common reference point of the carrier. PRBs may be defined in a given BWP and numbered within that BWP.

[0173] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be set for the terminal 20 within one carrier.

[0174] At least one of the configured BWPs may be active, and the terminal 20 may not expect to transmit or receive a predetermined signal / channel outside the active BWP. Note that the terms "cell," "carrier," and the like in this disclosure may be read as "BWP."

[0175] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. 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 subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0176] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0177] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0178] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, notification of predetermined information (e.g., notification that "X is true") is not limited to being done explicitly, but may be done implicitly (e.g., by not notifying the predetermined information).

[0179] 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 herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure. [Explanation of symbols]

[0180] 10 base station 110 Transmitter 120 Receiver 130 Setting section 140 Control Unit 20 terminals 210 Transmitter 220 Receiving unit 230 Setting Section 240 Control Unit 1001 processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication equipment 1005 Input Device 1006 Output Device 2001 Vehicle 2002 Drive unit 2003 Steering Section 2004 accelerator pedal 2005 brake pedal 2006 Shift Lever 2007 front wheel 2008 rear wheel 2009 Axle 2010 Electronic Control Unit 2012 Information Services Department 2013 Communication Module 2021 Current Sensor 2022 RPM Sensor 2023 Air Pressure Sensor 2024 Vehicle speed sensor 2025 Acceleration Sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object Detection Sensor 2029 Accelerator pedal sensor 2030 Driving Assistance Systems Department 2031 microprocessor 2032 memory (ROM, RAM) 2033 Communication port (IO port)

Claims

1. A transmitter that transmits terminal capability information indicating whether the terminal supports transmission or reception of a reference signal for positioning using Cross Division Duplex (XDD) or whether the terminal supports transmission or reception of a reference signal for positioning using dynamic DL-UL switching; A control unit that assumes transmitting or receiving a reference signal for positioning using the XDD or a reference signal for positioning using the dynamic DL-UL switching according to the terminal capability information, The transmitter transmits request information including information indicating enablement or disablement of the XDD or the dynamic DL-UL switching in an uplink. Terminal.

2. The terminal capability information includes information indicating whether the terminal supports the XDD or the required function related to the dynamic DL-UL switching. The terminal according to claim 1 .

3. a receiving unit that receives, from a terminal, terminal capability information indicating whether the terminal supports transmission or reception of a reference signal for positioning using Cross Division Duplex (XDD) or whether the terminal supports transmission or reception of a reference signal for positioning using dynamic DL-UL switching; A control unit that assumes transmitting or receiving a reference signal for positioning using the XDD or a reference signal for positioning using the dynamic DL-UL switching according to the terminal capability information, The receiving unit receives request information including information indicating enabling or disabling of the XDD or the dynamic DL-UL switching. Base station.

4. transmitting terminal capability information indicating whether the terminal supports transmission or reception of reference signals for positioning using Cross Division Duplex (XDD) or whether the terminal supports transmission or reception of reference signals for positioning using dynamic DL-UL switching; Assume transmitting or receiving a reference signal for positioning using the XDD or a reference signal for positioning using the dynamic DL-UL switching according to the terminal capability information; transmitting request information in an uplink, the request information including information indicating whether the XDD or the dynamic DL-UL switching is enabled or disabled; Equipped with The communication method implemented by the device.

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