Terminal, Communication Method, and Wireless Communication System

Abstract

This terminal includes: a receiver that receives spatial relation configuration information; a controller that determines whether the spatial relation configuration information is extended spatial relation configuration information and when the spatial relation configuration information is the extended spatial relation configuration information, changes a setting of a periodic uplink transmission opportunity on the basis of information added to the spatial relation configuration information and indicating a change to the setting of the periodic uplink transmission opportunity; and a transmitter that sets a spatial relation on the basis of the spatial relation configuration information and performs uplink transmission on the basis of the changed setting of the periodic uplink transmission opportunity.

Description

Technical Field

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

Background Art

[0002] In 3GPP (3rd Generation Partnership Project), in order to achieve further increase in system capacity, further increase in data transmission speed, further reduction in latency in the radio section, etc., a wireless communication method called 5G or NR (New Radio) (hereinafter, this wireless communication method is referred to as "NR") is being studied. In 5G, in order to meet the requirement of achieving a throughput of 10 Gbps or more and reducing the latency in the radio section to 1 ms or less, various wireless technologies and network architectures are being studied.

[0003] In the specifications of New Radio (NR) in Releases 15 and 16 of 3rd Generation Partnership Project (3GPP), it is assumed that a frequency band with an upper limit of 52.6 GHz is used for wireless communication. As frequency bands used for wireless communication, a frequency band from 410 MHz to 7.125 GHz (Frequency Range 1 (FR1)) and a frequency band from 24.25 GHz to 52.6 GHz (Frequency Range (FR2)) are defined. Currently, in 3GPP, as a frequency band other than FR1 and FR2, the use of a frequency band from 52.6 GHz to 71 GHz for wireless communication is being studied (Non-Patent Document 1, Non-Patent Document 2).

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Non-Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] The frequency band from 52.6 GHz to 71 GHz is a very high-frequency band as a frequency band used for wireless communication. When used for wireless communication, problems such as phase noise, high propagation loss, an increase in Peak-to-Average Power Ratio (PAPR), and non-linearity of the power amplifier may occur. In order to address the problem of high propagation loss, it is assumed that coverage is ensured by using a large number of narrow beams.

[0006] When ensuring coverage by using a large number of narrow beams, as the terminal moves, a method is required to change the setting of the periodic uplink transmission opportunity simultaneously with the change in the setting of the spatial relation related to the transmission and reception of the terminal.

Means for Solving the Problems

[0007] According to the disclosed technology, a receiving unit that receives setting information of a spatial relation, and determines whether the setting information of the spatial relation is the extended setting information of the spatial relation. When the setting information of the spatial relation is the extended setting information of the spatial relation, based on the information indicating the change in the setting of the periodic uplink transmission opportunity added to the setting information of the spatial relation, a control unit that changes the setting of the periodic uplink transmission opportunity, a transmission unit that sets the spatial relation based on the setting information of the spatial relation and performs uplink transmission based on the changed setting of the periodic uplink transmission opportunity, are provided in the terminal. An extended spatial relationship setting information that enables simultaneous changes in the setting of spatial relationships and changes in the timing of periodic transmission opportunities.

Effects of the Invention

[0008] ​According to the disclosed technology, a method is provided for changing the setting of periodic transmission resources simultaneously with changing the setting of the spatial relation related to transmission and reception of a terminal as the terminal moves.

Brief Description of the Drawings

[0009]

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Embodiments for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the embodiments described below are examples, and the embodiments to which the present invention is applied are not limited to the following embodiments.

[0011] In the operation of the wireless communication system according to the embodiment of the present invention, existing technologies may be used as appropriate. The existing technologies are, for example, existing NR or LTE, but are not limited to existing NR or LTE.

[0012] (System Configuration) FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention. The wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20 as shown in FIG. 1. Although one base station 10 and one terminal 20 are shown in FIG. 1, this is an example, and there may be a plurality of each.

[0013] 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 the wireless signal are defined in the time domain and the frequency domain. 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. Also, the TTI (Transmission Time Interval) in the time domain may be a slot or a subframe.

[0014] The base station 10 can perform carrier aggregation in which a plurality of cells (a plurality of 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.

[0015] The base station 10 transmits synchronization signals, system information, etc. to the terminal 20. The synchronization signals are, for example, NR-PSS and NR-SSS. The system information is transmitted, for example, by NR-PBCH or PDSCH, and is also referred to as broadcast information. As shown in FIG. 1, the base station 10 transmits control signals or data to the terminal 20 in the DL (Downlink) and receives control signals or data from the terminal 20 in the UL (Uplink). 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, but such a naming method is just an example.

[0016] 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, a communication module for M2M (Machine-to-Machine), etc. As shown in FIG. 1, the terminal 20 receives control signals or data from the base station 10 in the DL and transmits control signals or data to the base station 10 in the UL, thereby using various communication services provided by the wireless communication system. Note that the terminal 20 may be called a UE, and the base station 10 may be called a gNB.

[0017] The terminal 20 is capable of performing carrier aggregation in which a plurality of cells (a plurality of CCs (Component Carriers)) are bundled to communicate with the base station 10. In carrier aggregation, one PCell (Primary Cell) and one or more SCell (Secondary Cells) are used. Also, a PUCCH-SCell having a PUCCH may be used.

[0018] FIG. 2 shows a configuration example of a wireless communication system when DC (Dual connectivity) is executed. 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. The base station 10A and the base station 10B are each connected to a core network. The terminal 20 can communicate with both the base station 10A and the base station 10B.

[0019] The cell group provided by the base station 10A which is MN is called the MCG (Master Cell Group), and the cell group provided by the base station 10B which is SN is called the SCG (Secondary Cell Group). Also, in 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.

[0020] The processing operations in this embodiment may be executed with the system configuration shown in FIG. 1, or may be executed with the system configuration shown in FIG. 2, or may be executed with other system configurations.

[0021] In the specifications of New Radio (NR) of Release 15 and Release 16 of the 3rd Generation Partnership Project (3GPP), it is assumed that frequency bands with a frequency up to 52.6 GHz are used for wireless communication. As shown in FIG. 3, as frequency bands for wireless communication, a frequency band from 410 MHz to 7.125 GHz (Frequency Range 1 (FR1)), and a frequency band from 24.25 GHz to 52.6 GHz (Frequency Range (FR2)) are defined.

[0022] Currently, in 3GPP, as frequency bands other than FR1 and FR2, the use of frequency bands from 52.6 GHz to 71 GHz for wireless communication is being considered (Non-Patent Document 1, Non-Patent Document 2).

[0023] The frequency band from 52.6 GHz to 71 GHz is a frequency band with a very high frequency as a frequency band for wireless communication. Therefore, when used for wireless communication, problems such as phase noise, high propagation loss, an increase in Peak-to-Average Power Ratio (PAPR), and non-linearity of the power amplifier may occur.

[0024] Here, phase noise is the phase fluctuation generated by frequency components other than the carrier frequency in the local transmission signal. PAPR is an index representing the magnitude of the peak of the transmission waveform, which is the ratio of the maximum power to the average power. When the PAPR is large, it is necessary to increase the back-off of the power amplifier on the transmission side to avoid signal distortion.

[0025] To address the issue of phase noise, it may be necessary to use a subcarrier spacing wider than the normal subcarrier spacing (SCS: Subcarrier Spacing), or to use a single carrier waveform.

[0026] To address the problem of high propagation loss, it may be necessary to use a large number of narrow beams.

[0027] To address issues such as an increase in PAPR and the non-linearity of the power amplifier, it may be necessary to use a wider subcarrier spacing (which may also be achieved by reducing the number of sample points in the fast Fourier transform (FFT)), a mechanism to reduce PAPR, or a single carrier waveform.

[0028] Therefore, as a digital signal modulation method for use in the 52.6 GHz to 71 GHz band, it is possible to use Cyclic Prefix (CP)-OFDM with a large subcarrier spacing or Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) with a large subcarrier spacing.

[0029] In the 3GPP specification, it is defined that one slot consists of 14 symbols. Therefore, as shown in Figure 4, as the subcarrier spacing (SCS) increases, the symbol length / CP length decreases, and the slot length decreases.

[0030] As a subcarrier spacing for wireless communication in the 52.6 GHz to 71 GHz band, subcarrier spacings between 120 kHz and 960 kHz may be supported. For data communication, for example, a subcarrier spacing of 120 kHz, a subcarrier spacing of 480 kHz, and a subcarrier spacing of 960 kHz are assumed to be used. For example, a subcarrier spacing of 240 kHz may be used for transmitting the synchronization signal block (SSB) used for initial access.

[0031] FIG. 5 is a diagram showing an example of a Radio Resource Control (RRC) message for setting a Physical Uplink Control Channel (PUCCH) resource for a Scheduling Request (SR).

[0032] For example, when the terminal 20 needs to perform an uplink transmission at a certain timing, it transmits an SR to the base station 10. By transmitting the SR, the terminal 20 makes a scheduling request to the base station 10.

[0033] The occasion for the terminal 20 to transmit the SR may be set, for example, by the base station 10 transmitting the RRC message shown in FIG. 5 to the terminal 20. Here, the occasion for transmitting the SR may be included in the PUCCH.

[0034] The transmission opportunity, which is a resource for transmitting SR, may be set periodically. In the example of FIG. 5, the period of the transmission opportunity is set by periodicityAndOffset. In the example of FIG. 5, the fact that periodicityAndOffset is set to sl1 may mean that the period of the transmission opportunity for transmitting SR is set to 1 slot. Similarly, the fact that periodicityAndOffset is set to sl2, sl4,... may mean that the period of the transmission opportunity for transmitting SR is set to 2 slots, 4 slots,.... For example, when periodicityAndOffset is set to sl8, the period of the transmission opportunity for transmitting SR is set to 8 slots. An INTEGER from 0 to 7 is set to indicate the slot in which the transmission opportunity is set among the 8 slots included in one period. sym2 and Sym6or7 mean that the period of the transmission opportunity for transmitting SR is a symbol unit period.

[0035] SR is transmitted on PUCCH. In addition to SR, Hybrid Automatic Repeat Request (HARQ)-Acknowledgement (ACK), etc. are transmitted on PUCCH. As general setting information regarding PUCCH, in the example of FIG. 5, PUCCH-ResourceId is included in the RRC message. For example, regarding the frequency direction setting of PUCCH, it can be set with reference to PUCCH-ResourceId.

[0036] FIG. 6 is a diagram showing an example of an RRC message for setting a PUCCH resource for transmitting Channel State Information (CSI). According to the RRC message of FIG. 6, it is possible to perform settings for periodic CSI transmission (periodic), semi-persistent CSI transmission (semiPersistentOnPUCCH), or aperiodic CSI transmission (aperiodic).

[0037] In the case of configuring periodic CSI transmission and semi-persistent CSI transmission, similar to the case of configuring the transmission opportunity for transmitting SR in the example of FIG. 5, the transmission period of CSI transmission can be set by CSI-ReportPeriodcityAndOffset. Also, in the case of configuring PUCCH resources for transmitting the CSI in FIG. 6, the RRC message includes PUCCH-ResourceId as general configuration information regarding PUCCH.

[0038] FIG. 7 is a diagram showing an example of configuration information for configuring PUCCH resources. As shown in FIG. 7, by referring to PUCCH-ResourceId, general configuration information such as the format of PUCCH can be referred to.

[0039] In New Radio (NR), in order to ensure coverage when communicating using radio waves in a high-frequency band, beamforming is applied when transmitting data in the Physical Downlink Shared Channel (PDSCH), transmitting control signals in the Physical Downlink Control Channel (PDCCH), transmitting synchronization signals and broadcast information in the Synchronization Signal / Physical Broadcast Channel (SS / PBCH) Block (SSB), and transmitting reference signals (Channel State Information Reference Signal (CSI-RS) / Demodulation Reference Signal (DMRS)).

[0040] For example, in Frequency Range 2 (FR2), that is, the millimeter-wave frequency band of 24 GHz or higher, it is possible to use 64 beams, and in Frequency Range 1 (FR1), that is, the sub-6 GHz frequency band, it is possible to use 8 beams.

[0041] When communicating using beams, beam management, or beam control becomes important. For example, in the case where there are two beams, the base station 10 needs to notify the terminal 20 of which beam the signal is being transmitted using. The Transmission Configuration Indication (TCI) state is defined to notify the terminal 20 of the beam to be used or to notify the terminal 20 of the beam switching to be performed.

[0042] The content notified by the TCI state includes Quasi-Co-Location (QCL) indicating that it is possible to assume that one reference signal (RS) and one channel are on the same radio channel or have the same radio characteristics (the same beam).

[0043] For example, the fact that the Physical Downlink Shared Channel (PDSCH), which is a channel for transmitting data and a reference signal such as the Channel State Information - Reference Signal (CSI-RS) (or Synchronization Signal / Physical Broadcast Channel (SS / PBCH)), are QCL means that these reference signals and data have the relationship of being transmitted on the same beam.

[0044] (Beam management function) In New Radio (NR), a beam management function is defined for selecting the optimal pair of the beam used by the base station 10 for transmission and the beam used by the terminal 20 for reception.

[0045] Figure 8 is a diagram showing an example of the New Radio beam management process. In step S101 of Figure 8, the base station 10 notifies the terminal 20 of the reference signal setting and the reporting setting. In step S102, the terminal 20 measures the beam quality (RSRP: Reference Signal Received Power) using the reference signal transmitted on the notified resource and transmits the measured quality to the base station 10.

[0046] The base station 10 calculates an optimal beam based on the quality of each beam reported from the terminal 20, and notifies the terminal 20 of information indicating that data and / or control signals are to be transmitted using the calculated beam as a TCI state (step S103).

[0047] As functions that can be used in the beam management procedure, the following RS resource configuration function, Beam reporting function, and Beam indication function are known.

[0048] (RS resource configuration function) The RS resource configuration function is a function that sets a reference signal used for beam management (beam quality reporting: beam reporting / L1-RSRP reporting) by RRC signaling. Here, it is possible to set an SSB or CSI-RS as the reference signal used for beam quality reporting. Also, as the transmission period of CSI-RS, aperiodic, semi-persistent, and periodic are supported. Furthermore, as a function for optimizing the reception beam (Rx beam) in the terminal 20, it is possible for the base station 10 to set, by RRC signaling, a repetition in which CSI-RS is repeatedly transmitted in the same beam (CSI-RS with repetition on or off).

[0049] (Beam reporting function) The Beam reporting function is a function that reports beam quality by leveraging the framework of CSI-RS reports. The terminal 20 reports the beam quality to the base station 10. As reporting periods, aperiodic, semi-persistent, and periodic are supported. Group-based beam reporting and non-group-based beam reporting are supported. Also, SSB indexes, CSI-RS resource indexes, and L1-RSRP reports are supported.

[0050] (Beam indication function) With the Beam indication function, it is possible to set a TCI-state (Transmission Configuration Indication-state) for the network to notify the terminal 20 of information indicating which beam the base station 10 is using for the transmission of each reference signal, data, and control signal (DL beam indication). For example, the base station 10 may use the beam indicated by the notified TCI-state for the transmission of PDCCH / PDSCH.

[0051] In the case of PDSCH, a 3-bit TCI field in the Medium Access Control Control Element (MAC CE) and DCI is used to select one of the M TCI-states.

[0052] In the case of PDCCH, K TCI-states are set for each Control Resource Set (CORESET) by RRC signaling, and one of the K TCI-states is activated by the MAC CE.

[0053] In the case of uplink beam indication, the base station 10 notifies the terminal 20 of a Spatial relation indication indicating a beam that can be used when the terminal 20 transmits PUCCH / PUSCH. For example, the terminal 20 may use the beam indicated by the Spatial relation indication for the transmission of PUCCH / PUSCH.

[0054] In particular, in the case of PUCCH, the base station 10 sets, for example, K PUCCH-SpatialRelations for the terminal 20 by means of an RRC message. Thereafter, the base station 10 activates, for each PUCCH resource, one of the K PUCCH-SpatialRelations set for the terminal 20 by transmitting a Medium Access Control Control Element (MAC CE) to the terminal 20.

[0055] In the case of PUSCH, the Spatial Relation Indication (SRI) field of the DCI is used to determine the uplink transmission beam. In the case of contention-based PUSCH, one SRI is notified. In the case of non-contention-based PUSCH, multiple SRIs can be notified.

[0056] FIG. 9 is a diagram showing an example of the format of the PUCCH spatial relation Activation / Deactivation MAC CE of Release 15 of 3GPP. By using the MAC CE shown in FIG. 9, beam setting can be performed for one PUCCH Resource ID.

[0057] FIG. 10 is a diagram showing an example of a format of an extended PUCCH spatial relation Activation / Deactivation MAC CE in Release 16 of 3GPP. The MAC CE shown in FIG. 10 includes a plurality of PUCCH Resource IDs, and it is possible to set a Spatial Relation for each of these plurality of PUCCH Resource IDs.

[0058] As described above, when using a frequency band of 52.6 GHz to 71 GHz for wireless communication, in order to address the problem of high propagation loss, it may be possible to use a large number of narrow beams. Here, when the position of the terminal 20 communicating with the base station 10 using a narrow beam moves, beam switching may be required to communicate with the base station 10.

[0059] FIG. 11 is a diagram showing an example of a case where beam switching is required. As shown on the left side of FIG. 11, in the state before the terminal 20-3 moves, the base station 10 receives SRs transmitted from the terminals 20-1, 20-2, and 20-3 using beam #2. After that, in the state where the terminal 20-3 has moved, the optimal beam combination for communication between the base station 10 and the terminals 20-1 and 20-2 is the same as before the movement of the terminal 20-3. However, in the state after the terminal 20-3 has moved, the optimal beam combination for communication between the base station 10 and the terminal 20-3 is different from the optimal beam combination for communication between the base station 10 and the terminal 20-3 before the movement of the terminal 20-3.

[0060] Here, for example, assume that before the terminal 20-3 moves, the transmission opportunity (PUCCH resource) for the terminal 20-3 to send an SR is periodically set by RRC signaling. In the state after the terminal 20-3 moves, the optimal beam combination (Beam#3 in FIG. 11) for communication between the base station 10 and the terminal 20-3 is different from the optimal beam combination (Beam#2 in FIG. 11) for communication between the base station 10 and the terminal 20-3 before the terminal 20-3 moves. Therefore, after the terminal 20-3 moves, it is assumed that the terminal 20-3 and the base station 10 switch the beam combination for communication (switch from Beam#2 to Beam#3 in FIG. 11). After the terminal 20-3 and the base station 10 switch the beam combination for communication, if an SR is transmitted at any of the periodic transmission opportunities for transmitting an SR set before the terminal 20-3 moves, the base station 10 may not be able to properly receive the SR.

[0061] That is, the periodic transmission opportunity for transmitting an SR set before the terminal 20-3 moves is set based on the transmission and reception timing using the optimal beam combination (Beam#2 in FIG. 11) for communication between the base station 10 and the terminal 20-3 before the terminal 20-3 moves. In particular, since it is assumed that the timing for the base station 10 to receive using beam #2 is different from the timing for the base station 10 to receive using beam #3, the timing at which the base station 10 can receive an SR transmitted at any of the periodic transmission opportunities for transmitting an SR set before the terminal 20-3 moves may be offset from the timing for the base station 10 to receive using beam #3.

[0062] Therefore, as shown in the example of FIG. 11, when the terminal 20-3 moves, it may be necessary to not only change the beam setting (or spatial relation) but also reset the setting of the periodic SR / CSI reporting.

[0063] FIG. 12 is a diagram showing an example of an operation in which the base station 10 switches reception beams according to time. The left side of FIG. 12 corresponds to the state before the terminal 20-3 moves in FIG. 11. The right side of FIG. 12 corresponds to the state after the terminal 20-3 moves in FIG. 11.

[0064] As shown on the left side of FIG. 12, the base station 10 performs reception using Beam #1 in time period 1, performs reception using Beam #2 in time period 2, and performs reception using Beam #3 in time period 3. Before the terminal 20-3 moves, the terminals 20-1, 20-2, and 20-3 transmit SR in accordance with the timing of reception by the base station 10 using Beam #2 in time period 2.

[0065] On the other hand, as shown on the right side of FIG. 12, after the movement of the terminal 20-3, it is assumed that the terminal 20-3 switches the beam used for SR transmission to the beam optimal for reception by the base station 10 using Beam #3 (updates the spatial relation). In this case, if the transmission timing of the periodic SR transmission opportunity set before the movement of the terminal 20-3 is not changed, as shown on the right side of FIG. 12, the terminal 20-3 may transmit SR in time period 2. In this case, the terminal 20-3 will transmit SR using the beam optimal for reception by the base station 10 using Beam #3 in time period 2. On the other hand, the base station 10 performs reception using Beam #2 in time period 2. Therefore, there is a possibility that the base station 10 cannot appropriately receive the SR transmitted by the terminal 20-3 in time period 2.

[0066] Therefore, along with the change in the setting of the PUCCH spatial relation due to the movement of the terminal 20, a method for changing the setting regarding the timing of periodic SR / CSI reporting via the corresponding PUCCH is required.

[0067] (Proposal1) As described above, the base station 10 can switch the beam used by the terminal 20 using MAC CE. When changing the beam, it is proposed to extend the settings of MAC CE and RRC so that the settings regarding the timing of the periodic SR / CSI transmission opportunity via PUCCH can be changed. Specifically, a new bit field (which may be a field in octet units) is added to the MAC CE format shown in the examples of FIGS. 9 and 10 so that the change in the spatial relation setting and the change in the timing of the periodic transmission opportunity can be performed simultaneously.

[0068] FIG. 13 is a diagram showing an example of a change in the RRC message for enabling the terminal 20 to use the extended MAC CE.

[0069] (Option1) The base station 10 may be able to set for the terminal 20 via an RRC message whether a new bit field (which may be a field in octet units) is added to the MAC CE.

[0070] (Option1-1) The terminal 20 may determine based on the RRC message whether a new bit field (which may be a field in octet units) is added to the MAC CE.

[0071] (Option1-1A) FIG. 13 is a diagram showing an example of modification of an RRC message. For example, as shown in FIG. 13, for the PUCCH-Config information element (IE), by introducing TimingAdjustmentMacCe, which is an RRC parameter, it may be possible to indicate whether a new bit field for changing the setting regarding the timing of periodic transmission opportunities is added to the MAC CE. For example, by setting the value of TimingAdjustmentMacCe to "Enabled", it may be indicated that a new bit field for changing the setting regarding the timing of periodic transmission opportunities is added to the MAC CE. Also, by setting the value of TimingAdjustmentMacCe to "Disabled", it may be indicated that no new bit field for changing the setting regarding the timing of periodic transmission opportunities is added to the MAC CE.

[0072] (Option1-1B) FIG. 14 is a diagram showing an example of modification of an RRC message. The RRC parameter TimingAdjustmentMacCe may be added to the RRC message for setting periodic reporting via the PUCCH. In the example of FIG. 14, an example of adding TimingAdjustmentMacCe to SchedulingRequestResourceConfig, which is an RRC message for setting periodic SR transmission, and an example of adding TimingAdjustmentMacCe to CSI-ReportConfig for setting periodic channel state information (CSI) reporting are shown.

[0073] (Sub-opt1) The TimingAdjustmentMacCe, which is an RRC parameter, may be a 1-bit bit field. For example, by setting the value of TimingAdjustmentMacCe to "Enabled", it may be shown that a new bit field for changing the settings regarding the timing of periodic transmission opportunities is added to the MAC CE. Also, by setting the value of TimingAdjustmentMacCe to "Disabled", it may be shown that no new bit field for changing the settings regarding the timing of periodic transmission opportunities is added to the MAC CE.

[0074] (Sub-opt2) The TimingAdjustmentMacCe, which is an RRC parameter, may be a bit field corresponding to the number of periodic transmission opportunities set in the PUCCH resource. That is, for each of the multiple periodic transmission opportunities set in the PUCCH resource, it may be possible to indicate whether a new bit field for changing the timing-related settings is added to the MAC CE.

[0075] FIG. 15 is a diagram showing an example of a change in an RRC message. In the example of FIG. 15, the TimingAdjustmentMacCe, which is an RRC parameter, is a bitmap indicating whether a new bit field for setting changes regarding the timing of periodic transmission opportunities is added for each PUCCH resource ID included in the MAC CE. For example, when TimingAdjustmentMacCe is set to {Enabled, Disabled,...}, a new bit field for setting changes regarding the timing of periodic transmission opportunities is added for the first PUCCH resource ID included in the MAC CE, and it may be shown that no new bit field for setting changes regarding the timing of periodic transmission opportunities is added for the second PUCCH resource ID included in the MAC CE. In the example of FIG. 15, the fact that the RRC parameter TimingAdjustmentMacCe is not set may indicate that no new bit field for setting changes regarding the timing of periodic transmission opportunities is added to the MAC CE.

[0076] (Option1-2) The terminal 20 may determine whether a new bit field (which may be a field in octet units) is added to the MAC CE based on the value set in the reserved bit field of the MAC CE.

[0077] FIG. 16 is a diagram showing an example of an extended MAC CE format. FIG. 16 shows an example in which the MAC CE format shown in FIG. 9 is extended. As shown in FIG. 16, a field indicated by Oct4 is added to the MAC CE format shown in FIG. 9. The field indicated by Oct4 may indicate the content of the setting change regarding the timing of periodic transmission opportunities.

[0078] In the example of FIG. 16, the value set in the reserved bit field of Oct1 and / or the reserved bit field of Oct2 may indicate the presence or absence of the field indicated by Oct4. For example, the fact that the value set in the reserved bit field of Oct2 is "0" may indicate that the field indicated by Oct4 has not been added. The fact that the value set in the reserved bit field of Oct2 is "1" may indicate that the field indicated by Oct4 has been added.

[0079] (Option1-3) The method of Option1-1 described above and the method of Option1-2 may be combined. For example, the base station 10 may set for the terminal 20 whether the reserved bit of the MAC CE is used or not by means of an RRC message. In this case, the terminal 20 may determine whether the field indicated by Oct4 in FIG. 16 has been added based on the value set in the reserved bit of the MAC CE.

[0080] (Option2) The format of the MAC CE shown in the example of FIG. 10 may be extended.

[0081] (Option2-1) For each setting (which may be indicated by a PUCCH resource ID) among the settings of a plurality of periodic transmission opportunities included in the MAC CE and set in the PUCCH resource, a new bit field for changing the setting regarding timing may be added.

[0082] FIG. 17 is a diagram showing an example in which the format of the MAC CE shown in FIG. 10 is extended. As shown in FIG. 17, for the setting of a plurality of periodic transmission opportunities corresponding to the PUCCH resource ID shown in Oct2, a new bit field Oct2N for changing the setting regarding timing may be added. Similarly, for the setting of a plurality of periodic transmission opportunities corresponding to the PUCCH resource ID shown in Oct2k (k < N), a new bit field Oct2N + k - 1 for changing the setting regarding timing may be added. The terminal 20 may determine whether a new bit field for changing the setting regarding timing is added to the MAC CE based on the RRC setting or the set value of the reserved bit of the MAC CE.

[0083] (Alternative1) The terminal 20 may determine whether a new bit field for changing the setting regarding timing is added to the MAC CE based on the RRC setting.

[0084] (Alt 1A) For example, by introducing TimingAdjustmentMacCe, which is an RRC parameter, for the PUCCH-Config information element, it may be possible to indicate whether a new bit field for changing the setting regarding the timing of periodic transmission opportunities is added to the MAC CE. For example, by setting the value of TimingAdjustmentMacCe to "Enabled", it may be shown that a new bit field for changing the setting regarding the timing of periodic transmission opportunities is added to the MAC CE. Also, by setting the value of TimingAdjustmentMacCe to "Disabled", it may be shown that a new bit field for changing the setting regarding the timing of periodic transmission opportunities is not added to the MAC CE.

[0085] (Alt 1B) For example, a TimingAdjustmentMacCe, which is an RRC parameter, may be added to an RRC message for configuring periodic reporting via PUCCH. For example, TimingAdjustmentMacCe may be added to SchedulingRequestResourceConfig, which is an RRC message for configuring periodic SR transmission. TimingAdjustmentMacCe may be added to CSI-ReportConfig for configuring periodic channel state information (CSI) reporting.

[0086] (Alt 1C) For example, an N-1 bit TimingAdjustmentMacCe, which is an RRC parameter, may be used to indicate whether a new bit field for changing the setting related to the timing of periodic transmitter opportunities is added to the MAC CE. In this case, the N-1 bits of TimingAdjustmentMacCe may be mapped to Oct2N to Oct3N-2 respectively.

[0087] (Alternative2) The terminal 20 may determine whether a new bit field for changing the setting related to timing is added to the MAC CE based on the set value of the reserved bit of the MAC CE.

[0088] (Alt 2A) The terminal 20 may determine the presence or absence of a new bit field for changing the setting related to the timing corresponding to the PUCCH resource ID based on the set value of the reserved bit field associated with the octet of the PUCCH resource ID or the octet of the Spatial Relation Info ID corresponding to the PUCCH resource ID included in the MAC CE.

[0089] (Alt 2B) The terminal 20 may determine the presence or absence of a new bit field for changing the timing setting based on the setting value of the reserved bit field (which may be a 1-bit field) included in the MAC CE.

[0090] FIG. 18 is a diagram showing an example in which the format of the MAC CE shown in FIG. 10 is extended. As shown in FIG. 18, the setting value of the 1-bit reserved bit field included in the MAC CE may indicate the presence or absence of a new bit field (Oct2N to Oct3N-2) for changing the timing setting.

[0091] (Altenative3) The above-described method of Altenative1 and the method of Alternative2 may be combined. For example, the base station 10 may set for the terminal 20 whether the reserved bit of the MAC CE is used or not by means of an RRC message. In this case, the terminal 20 may determine the presence or absence of a new bit field for changing the timing setting based on the value set in the reserved bit of the MAC CE.

[0092] (Option2-2) Regarding the setting of a plurality of periodic transmission opportunities included in the MAC CE, a new bit field (one octet field) for changing the timing setting may be added to the setting of the plurality of periodic transmission opportunities (which may be indicated by the PUCCH resource ID) set in the PUCCH resource. The terminal 20 may determine whether the one octet field is added to the MAC CE using any of the methods of Option1-1, Option1-2, and Option1-3 described above. In the case of the method of Option1-1B, since different setting changes are applied to different PUCCH resource IDs, it is necessary to consider the difference from Option1-1.

[0093] (Option2-2, Sub-opt 1) If the RRC message indicates that one octet field for changing the timing-related setting for all PUCCH resource IDs is included in the MAC CE, then the one octet field may be included in the MAC CE. Otherwise, the one octet field for changing the timing-related setting may not be included in the MAC CE.

[0094] (Option2-2, Sub-opt 2) If the RRC message indicates that one octet field for changing the timing-related setting for any one of the plurality of PUCCH resource IDs is included in the MAC CE, then the one octet field may be included in the MAC CE. Otherwise, the one octet field for changing the timing-related setting may not be included in the MAC CE.

[0095] FIG. 19 is a diagram showing an example in which the format of the MAC CE shown in FIG. 10 is extended. As shown in FIG. 19, the set value of the 1-bit reserved bit field included in the MAC CE may indicate the presence or absence of one octet field (Oct2N) for changing the timing-related setting.

[0096] (Proposal2) The terminal 20 may change the setting regarding the timing of the periodic transmission opportunity based on the value set in a new bit field (which may be a field in units of octets) added to the MAC CE.

[0097] (Option2-1) FIG. 20 is a diagram showing an example of Option2-1. As shown in FIG. 20, a set of candidate values for the timing of periodic transmission opportunities may be set. For example, the X Least Significant Bit (LSB) of a new bit field added to the MAC CE may be associated with an index indicating a candidate value for the timing of periodic transmission opportunities.

[0098] Note that in the example of FIG. 20, the X LSB is associated with the candidate value for the timing of periodic transmission opportunities, but the embodiments of the present invention are not limited to this example. For example, the X Most Significant Bit of a new bit field added to the MAC CE may be associated with the candidate value for the timing of periodic transmission opportunities. The size of X may be determined according to the number of candidate values for the timing of periodic transmission opportunities.

[0099] (Option2-2) FIG. 21 is a diagram showing an example of Option2-2. As shown in FIG. 21, a set of offset values for the timing of periodic transmission opportunities (which may be a new offset value for the timing of transmission opportunities or an offset value for the offset value of the timing of transmission opportunities) may be set. For example, the X Least Significant Bit (LSB) of a new bit field added to the MAC CE may be associated with an index indicating the offset value for the timing of periodic transmission opportunities. Note that in the case of Option2-2, the period of periodic transmission opportunities is not changed.

[0100] Note that in the example of FIG. 21, the X LSB is associated with the offset value for the timing of periodic transmission opportunities, but the embodiments of the present invention are not limited to this example. For example, the X Most Significant Bit of a new bit field added to the MAC CE may be associated with the offset value for the timing of periodic transmission opportunities. The size of X may be determined according to the number of offset values for the timing of periodic transmission opportunities.

[0101] (Proposal3) As described above, the base station 10 can switch the beam used by the terminal 20 using the MAC CE. When changing the beam, by changing the interpretation of the reserved bits of the MAC CE so that the settings regarding the timing of the periodic SR / CSI transmission opportunity via the PUCCH can be changed, it is proposed to be able to change the setting of the spatial relation and the setting regarding the timing of the periodic transmission opportunity simultaneously.

[0102] (Option3-1) FIG. 22 is a diagram showing an example of changing the interpretation of the reserved bits of the MAC CE. For example, one reserved bit or two reserved bits in the MAC CE format shown in FIG. 9 may be used for changing the setting regarding the timing of the periodic transmission opportunity.

[0103] (Option3-1-1) For example, the base station 10 may be configured by RRC signaling so that the terminal 20 changes the interpretation of the reserved bits of the MAC CE to change the setting regarding the timing of the periodic transmission opportunity. In this case, the same RRC parameters as Option1-1 of Proposal1 may be used.

[0104] (Option3-1-2) For example, when using one of the two reserved bits in the MAC CE format (for example, the second reserved bit from the top in FIG. 22) for changing the setting regarding the timing of the periodic transmission opportunity, the remaining one reserved bit (for example, the first reserved bit from the top in FIG. 22) may be used to indicate whether to change the interpretation of the reserved bits.

[0105] (Option3-1-3) For example, when using one of the two reserved bits in the MAC CE format (for example, the second reserved bit from the top in FIG. 22) for changing the setting related to the timing of the periodic transmission opportunity, the terminal 20 may determine whether to apply the above Option 3-1-2 based on the RRC setting.

[0106] (Option 3-2) FIG. 23 is a diagram showing an example of changing the interpretation of the reserved bits of the MAC CE. For example, the interpretation of the reserved bits in the MAC CE format shown in FIG. 10 may be changed to change the setting related to the timing of the periodic transmission opportunity.

[0107] (Option 3-2-1) As shown in FIG. 23, for example, using the reserved bits of each PUCCH Resource ID among the plurality of PUCCH Resource IDs in the MAC CE format shown in FIG. 10 and the reserved bits of the Spatioal Relation Info ID corresponding to the PUCCH Resource ID, the setting related to the timing of the periodic transmission opportunity associated with the PUCCH Resource ID may be changed.

[0108] (Alternative 3-2-1-1) Whether to change the interpretation of the reserved bits in the MAC CE format may be set in the RRC. In this case, RRC parameters similar to those of Option 1-1 may be used.

[0109] (Alternative 3-2-1-2) Whether to change the interpretation of the reserved bits in the MAC CE format may be set by the reserved bits in the MAC CE format that are not used for changing the timing setting.

[0110] (Alternative 3-2-1-2A) If a 1-bit reserved bit is used for changing the setting related to the timing of periodic transmission opportunities, other reserved bits may be used to indicate whether to change the interpretation of the reserved bits in the format of the MAC CE. In this case, for each PUCCH resource ID included in the format of the MAC CE, it may be indicated whether to change the interpretation of the reserved bits.

[0111] (Altanative3-2-1-2B) For example, the reserved bit of Oct1 in the MAC CE format of FIG. 23 may indicate whether to change the interpretation of the corresponding reserved bits for all PUCCH resource IDs included in the MAC CE format.

[0112] (Option3-2-2) As shown in FIG. 24, for example, some or all of the reserved bits in the MAC CE format shown in FIG. 10 may be used to change the settings related to the timing of all periodic transmission opportunities associated with all PUCCH Resource IDs included in the MAC CE.

[0113] (Altanative3-2-2-1) Whether to change the interpretation of the reserved bits in the MAC CE format may be set in the RRC. In this case, RRC parameters similar to those of Option1-1 may be used.

[0114] (Altanative3-2-2-2) Whether to change the interpretation of the reserved bits in the MAC CE format may be set by the reserved bits not used for changing the timing setting in the MAC CE format.

[0115] (Proposal4) The terminal 20 may be used to change the interpretation of the reserved bits of the MAC CE for changing the setting related to the timing of the periodic transmission opportunity. The change of the interpretation may be performed as follows.

[0116] (Option4-1) FIG. 25 is a diagram showing an example of Option4-1. As shown in FIG. 25, a set of candidate values for the timing of the periodic transmission opportunity may be set. For example, X Least Significant Bit (LSB) of the reserved bits included in the MAC CE may be associated with an Index indicating the candidate value for the timing of the periodic transmission opportunity.

[0117] Note that in the example of FIG. 25, the X LSB is associated with the candidate value for the timing of the periodic transmission opportunity, but the embodiments of the present invention are not limited to this example. For example, for example, X Most Significant Bit of a new bit field added to the MAC CE may be associated with the candidate value for the timing of the periodic transmission opportunity. The size of X may be determined according to the number of candidate values for the timing of the periodic transmission opportunity.

[0118] (Option4-2) FIG. 26 is a diagram showing an example of Option4-2. As shown in FIG. 26, a set of offset values for the timing of the periodic transmission opportunity (which may be a new offset value for the timing of the transmission opportunity or an offset value for the offset value of the timing of the transmission opportunity) may be set. For example, X Least Significant Bit (LSB) of the reserved bits included in the MAC CE may be associated with an Index indicating the offset value for the timing of the periodic transmission opportunity. Note that in the case of Option2-2, the period of the periodic transmission opportunity is not changed.

[0119] In the example of FIG. 26, the X LSB is associated with the offset value for the timing of the periodic transmission opportunity. However, the embodiments of the present invention are not limited to this example. For example, the X Most Significant Bit of a new bit field added to the MAC CE may be associated with the offset value for the timing of the periodic transmission opportunity. The size of X may be determined according to the number of offset values for the timing of the periodic transmission opportunity.

[0120] Regarding whether each option in the above-described embodiments is used only for SR PUCCH reporting, only for periodic CSI PUCCH reporting, or used for both SR PUCCH reporting and periodic CSI PUCCH reporting, it may be specified in the specification or may be set by RRC.

[0121] Regarding which option among the multiple options in the above-described embodiments is to be applied, it may be set by upper layer parameters, reported by the terminal 20 according to UE capability, described in the specification, or set by upper layer parameters and reported according to UE capability.

[0122] UE capability may be defined to indicate whether the terminal 20 supports an extension of the MAC CE for changing the setting of the timing of periodic SR / CSI reporting via the corresponding PUCCH simultaneously with the change in the setting of the PUCCH spatial relation.

[0123] UE capability may be defined to indicate whether the terminal 20 supports the addition of a bit field to the MAC CE for changing the setting of the timing of periodic SR / CSI reporting via the corresponding PUCCH simultaneously with the change in the setting of the PUCCH spatial relation.

[0124] UE capability may be defined to indicate whether the terminal 20 supports a change in the interpretation of the reserved bits of the MAC CE for changing the settings related to the timing of periodic SR / CSI reporting via the corresponding PUCCH simultaneously with the change in the setting of the PUCCH spatial relation.

[0125] Although the above embodiments relate to changes in the settings of periodic SR / CSI transmission opportunities, the embodiments of the present invention are not limited to the above embodiments. For example, the method of the above embodiments may be applied to the settings of the transmission of periodic sounding reference signals.

[0126] In the above embodiments, for the settings of periodic SR / CSI transmission opportunities, the changes in the spatial relation settings and the timing settings are performed by MAC CE. However, the embodiments of the present invention are not limited to the above examples. For example, the base station 10 may pre-set, via RRC, a plurality of combinations of spatial relation settings and timing settings for the settings of periodic SR / CSI transmission opportunities for the terminal 20. In this case, for example, when the terminal 20 moves, the base station 10 may specify, by means of DCI, the combination of the spatial relation settings and the timing settings actually applied to the communication of the terminal 20.

[0127] (Device Configuration) Next, a functional configuration example of the base station 10 and the terminal 20 that execute the processes and operations described so far will be described. The base station 10 and the terminal 20 include functions for implementing the above-described embodiments. However, the base station 10 and the terminal 20 may each be provided with only the functions of any one of the proposals in the above-described embodiments of the Proposal.

[0128] <Base Station 10> FIG. 27 is a diagram showing an example of the functional configuration of the base station 10. As shown in FIG. 27, the base station 10 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in FIG. 27 is merely an example. As long as the operations according to the embodiments of the present invention can be executed, the functional divisions and the names of the functional units may be any. The transmission unit 110 and the reception unit 120 may be referred to as a communication unit.

[0129] The transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and wirelessly transmitting the signal. The reception unit 120 includes a function of receiving various signals transmitted from the terminal 20 and obtaining information of, for example, a higher layer from the received signals. Further, the transmission unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, DL data, etc. to the terminal 20. Further, the transmission unit 110 transmits the setting information etc. described in Proposals 1 to 2.

[0130] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in a storage device and reads it out from the storage device as necessary. The control unit 140 performs, for example, resource allocation, control of the entire base station 10, etc. Note that a functional unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and a functional unit related to signal reception in the control unit 140 may be included in the reception unit 120. Further, the transmission unit 110 and the reception unit 120 may be referred to as a transmitter and a receiver, respectively.

[0131] <Terminal 20> FIG. 28 is a diagram showing an example of the functional configuration of the terminal 20. As shown in FIG. 28, the terminal 20 includes a transmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in FIG. 28 is merely an example. As long as the operations according to the embodiments of the present invention can be executed, the functional divisions and the names of the functional units may be any. The transmission unit 210 and the reception unit 220 may be referred to as a communication unit.

[0132] The transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal. The reception unit 220 wirelessly receives various signals and obtains signals of a higher layer from the received physical layer signals.

[0133] The setting unit 230 stores various setting information received from the base station 10 by the reception unit 220 in the storage device and reads it out from the storage device as necessary. In addition, the setting unit 230 also stores preset setting information. The control unit 240 controls the entire terminal 20. Note that a functional unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and a functional unit related to signal reception in the control unit 240 may be included in the reception unit 220. Also, the transmission unit 210 and the reception unit 220 may be referred to as a transmitter and a receiver, respectively.

[0134] The embodiments describe at least the following terminal, communication method, and wireless communication system. (Item 1) A reception unit that receives setting information on spatial relationships, determines whether the setting information on the spatial relationship is the extended setting information on the spatial relationship, and when the setting information on the spatial relationship is the extended setting information on the spatial relationship, based on information indicating a change in the setting of the periodic uplink transmission opportunity added to the setting information on the spatial relationship, a control unit that changes the setting of the periodic uplink transmission opportunity, a transmission unit that sets the spatial relationship based on the setting information on the spatial relationship and performs uplink transmission based on the changed setting of the periodic uplink transmission opportunity, A terminal comprising the above. (Item 2) The control unit determines whether the setting information on the spatial relationship is the extended setting information on the spatial relationship based on a value set in a specific bit field included in the setting information on the spatial relationship. The terminal according to Item 1. (Item 3) The control unit determines whether the setting information on the spatial relationship is the extended setting information on the spatial relationship based on a set value of a specific information element received by the reception unit before receiving the setting information on the spatial relationship. The terminal according to claim 1. (Item 4) The periodic uplink transmission opportunity is a transmission opportunity for a scheduling request or a channel state information report. The terminal according to claim 1. (Item 5) A step of receiving setting information of a spatial relationship; Determining whether the setting information of the spatial relationship is the setting information of the extended spatial relationship, and when the setting information of the spatial relationship is the setting information of the extended spatial relationship, based on the information indicating the change in the setting of the periodic uplink transmission opportunity added to the setting information of the spatial relationship, a step of changing the setting of the periodic uplink transmission opportunity; Setting the spatial relationship based on the setting information of the spatial relationship, and performing uplink transmission based on the changed setting of the periodic uplink transmission opportunity; A communication method by a terminal comprising: (Item 6) A wireless communication system comprising a base station and a terminal, The base station, Comprises a transmission unit for transmitting setting information of a spatial relationship, The terminal, A receiving unit for receiving the setting information of the spatial relationship, Determining whether the setting information of the spatial relationship is the setting information of the extended spatial relationship, and when the setting information of the spatial relationship is the setting information of the extended spatial relationship, based on the information indicating the change in the setting of the periodic uplink transmission opportunity added to the setting information of the spatial relationship, a control unit for changing the setting of the periodic uplink transmission opportunity; Setting the spatial relationship based on the setting information of the spatial relationship, and a transmission unit for performing uplink transmission based on the changed setting of the periodic uplink transmission opportunity; Comprising: A wireless communication system.

[0135] With the configuration described in any of the above items, a method is provided for changing the setting of periodic transmission resources simultaneously with the change in the setting of the spatial relation regarding the transmission and reception of the terminal as the terminal moves.

[0136] (Hardware Configuration) The block diagrams (FIGS. 27 and 28) used in the description of the above embodiment show blocks of functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Also, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically combined device, or two or more physically or logically separated devices may be directly or indirectly (for example, using wired, wireless, etc.) connected and realized using these multiple devices. The functional block may be realized by combining software with the above one device or the above multiple devices.

[0137] Functions include, but are not limited to, judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, regarded as, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), assigning, etc. For example, a functional block (component) that functions as transmission is called a transmitting unit or a transmitter. In any case, as described above, the realization method is not particularly limited.

[0138] For example, the base station 10, the terminal 20, etc. in one embodiment of the present disclosure may function as a computer that performs the processing of the wireless communication method of the present disclosure. FIG. 29 is a diagram showing an example of the hardware configuration of the base station 10 and the terminal 20 according to one embodiment of the present disclosure. Physically, the above-described base station 10 and terminal 20 may be 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, and the like.

[0139] In the following description, the term "device" 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 without including some devices.

[0140] Each function in the base station 10 and the terminal 20 is realized by causing a predetermined software (program) to be loaded 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, or controls at least one of reading and writing data in the storage device 1002 and the auxiliary storage device 1003.

[0141] The processor 1001 controls the entire computer by operating an operating system, for example. The processor 1001 may be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, the above-described control unit 140, control unit 240, etc. may be realized by the processor 1001.

[0142] Also, the processor 1001 reads a program (program code), software module, 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 according to these. As the program, a program for causing a computer to execute at least a part of the operations described in the above-described embodiments is used. For example, the control unit 140 of the base station 10 shown in FIG. 27 may be stored in the storage device 1002 and realized by a control program operating on the processor 1001. Also, for example, the control unit 240 of the terminal 20 shown in FIG. 28 may be stored in the storage device 1002 and realized by a control program operating on the processor 1001. Although it has been described that the above-described various processes are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunication line.

[0143] The storage device 1002 is a computer-readable recording medium, and may be constituted by at least one of, for example, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. The storage device 1002 may be referred to as a register, cache, main memory (main storage device), etc. The storage device 1002 can store a program (program code), software module, etc. executable for implementing the communication method according to an embodiment of the present disclosure.

[0144] The auxiliary storage device 1003 is a computer-readable recording medium, and may be constituted by at least one of, for example, 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 (registered trademark) disk), a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. The auxiliary storage device 1003 may also be called an auxiliary storage. The above-described 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 appropriate media.

[0145] The communication device 1004 is hardware (a transmission / reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include, 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: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). For example, a transmission / reception antenna, an amplifier section, a transmission / reception section, a transmission line interface, etc. may be realized by the communication device 1004. The transmission / reception section may be physically or logically separated into a transmission section and a reception section.

[0146] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) for receiving an external input. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) for performing an 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).

[0147] Also, 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.

[0148] Also, the base station 10 and the 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 each functional block may be realized by the hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0149] (Supplement 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, corrections, alternatives, substitutions, etc. Specific numerical examples have been used for explanation to facilitate understanding of the invention, but unless otherwise specified, those numerical values are merely examples and any appropriate values may be used. The classification of items in the above description is not essential to the present invention, and matters described in two or more items may be used in combination as needed, or matters described in one item may be applied to matters described in another item (as long as there is no contradiction). 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 multiple functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by multiple components. Regarding the processing procedures described in the embodiments, the order of processing may be changed as long as there is no contradiction. For the sake of convenience in explaining the processing, the base station 10 and the terminal 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof. The software operating on the processor of the base station 10 according to the embodiment of the present invention and the software operating on the processor of the terminal 20 according to the embodiment of the present invention may each be stored in a random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk drive (HDD), removable disk, CD-ROM, database, server, or any other appropriate storage medium.

[0150] Also, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and other methods may be used. For example, the notification of information may be implemented by physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, notification information (MIB (Master Information Block), SIB (System Information Block)), other signals or combinations thereof. Also, the RRC signaling may be referred to as an RRC message, and for example, it may be an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration) message, etc.

[0151] Each aspect / embodiment described in the present disclosure may be applied to at least one of systems using LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), NR (new Radio), 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 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), other suitable systems, and next-generation systems extended based thereon. Also, a plurality of systems may be combined (e.g., a combination of at least one of LTE and LTE-A and 5G, etc.) and applied.

[0152] The processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this specification may be rearranged as long as there is no contradiction. For example, for the methods described in the present disclosure, the elements of various steps are presented using an exemplary order and are not limited to the specific order presented.

[0153] The specific operations assumed to be performed by the base station 10 in this specification may, in some cases, be performed by its upper node. In a network consisting of one or more network nodes having the base station 10, it is obvious that various operations performed for communication with the terminal 20 can be performed by at least one of the base station 10 and other network nodes other than the base station 10 (for example, but not limited to, MME or S-GW, etc.). Although the case where there is one other network node other than the base station 10 is exemplified above, the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW).

[0154] The information or signals, etc. described in the present disclosure can be output from an upper layer (or lower layer) to a lower layer (or upper layer). They may also be input and output via a plurality of network nodes.

[0155] The input and output information, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. The input and output information, etc. can be overwritten, updated, or appended. The output information, etc. may be deleted. The input information, etc. may be transmitted to other devices.

[0156] The determination in the present disclosure may be made based on a value represented by 1 bit (0 or 1), or may be made based on a Boolean value (true or false), or may be made based on a numerical comparison (for example, comparison with a predetermined value).

[0157] Software should be broadly construed to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc., whether called software, firmware, middleware, microcode, a hardware description language, or by any other name.

[0158] Also, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cables, fiber optic cables, twisted pairs, digital subscriber line (DSL), etc.) and wireless technologies (such as infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of a transmission medium.

[0159] 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 be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0160] Note that terms described 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). Also, a signal may be a message. Also, a component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, etc.

[0161] The terms "system" and "network" as used in this disclosure are used interchangeably.

[0162] In addition, the information, parameters, etc. described in this disclosure may be represented using absolute values, relative values from a predetermined value, or other corresponding information. For example, radio resources may be indicated by an index.

[0163] The names used for the above-described parameters are not limiting names in any way. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in this disclosure. Since various channels (e.g., PUSCH, PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, the various names assigned to these various channels and information elements are not limiting names in any way.

[0164] In this disclosure, terms such as "base station (BS: Base Station)", "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", "component carrier", etc. may be used interchangeably. The base station may also be referred to by terms such as macro cell, small cell, femto cell, pico cell, etc.

[0165] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each of the smaller areas can also provide communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The term "cell" or "sector" refers to part or all of the coverage area of at least one of the base station and the base station subsystem that provides communication services in this coverage.

[0166] In the present disclosure, terms such as "mobile station (MS)", "user terminal", "user equipment (UE)", and "terminal" can be used interchangeably.

[0167] 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, terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terms.

[0168] At least one of the base station and the mobile station may be referred to as a transmission device, a reception 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 moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), a moving body that moves without a driver (e.g., a drone, an autonomous vehicle, etc.), or a robot (humanoid or non-humanoid). Note that at least one of the base station and the mobile station also includes a device that does 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.

[0169] Also, the base station in the present disclosure may be replaced by a terminal. For example, for a configuration in which communication between the base station and the terminal is replaced with communication between a plurality of terminals 20 (which may be referred to as, for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.), each aspect / embodiment of the present disclosure may be applied. In this case, the functions of the above-described base station 10 may be configured to be functions of the terminal 20. Also, terms such as "uplink" and "downlink" may be replaced with terms corresponding to inter-terminal communication (for example, "side"). For example, an uplink channel, a downlink channel, etc. may be replaced with a side channel.

[0170] Similarly, the terminal in the present disclosure may be replaced by a base station. In this case, the functions of the above-described terminal may be configured to be functions of the base station.

[0171] As used herein, the terms "determining" and "deciding" may encompass a variety of operations. "Determining" and "deciding" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database, or other data structure), ascertaining, and considering something as having been "determined" or "decided". Further, "determining" and "deciding" may include considering something as having been "determined" or "decided" after receiving (e.g., receiving information), transmitting (e.g., transmitting information), inputting, outputting, accessing (e.g., accessing data in memory), etc. Additionally, "determining" and "deciding" may include considering something as having been "determined" or "decided" after resolving, selecting, choosing, establishing, comparing, etc. That is, "determining" and "deciding" may include considering something as having been "determined" or "decided" after performing some operation. Also, "determining (deciding)" may be read as "assuming", "expecting", "considering", etc.

[0172] The terms "connected" or "coupled", or any variations thereof, mean any direct or indirect connection or coupling between two or more elements, and can 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 can be physical, logical, or a combination thereof. For example, "connected" may be read as "accessed". As used in this disclosure, two elements can be considered to be "connected" or "coupled" to each other using at least one of one or more wires, cables, and printed electrical connections, and also, by way of some non-limiting and non-exhaustive examples, electromagnetic energy having wavelengths in the radio frequency region, microwave region, and optical (both visible and invisible) regions.

[0173] The reference signal can also be abbreviated as RS (Reference Signal) and may be called a Pilot depending on the applicable standard.

[0174] As used in this disclosure, the description "based on" does not mean "based only on" unless otherwise specified. In other words, the description "based on" means both "based only on" and "based at least on".

[0175] Any reference to an element using designations such as "first", "second", etc. used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, a reference to a first and a second element does not mean that only two elements can be employed, or that the first element must precede the second element in any way.

[0176] In the configuration of each of the above devices, the "means" can be replaced with "section", "circuit", "device", etc.

[0177] In the present disclosure, when terms such as "include", "including" and their variants are used, these terms are intended to be inclusive, similar to the term "comprising". Further, the term "or" used in the present disclosure is not intended to be an exclusive disjunction.

[0178] 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. The subframe may further be composed of one or more slots in the time domain. The subframe may have a fixed time length (e.g., 1 ms) independent of numerology.

[0179] Numerology may be communication parameters applied to at least one of transmission and reception of a certain signal or channel. Numerology may indicate, for example, at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering processing performed by a transceiver in the frequency domain, specific windowing processing performed by a transceiver in the time domain, etc.

[0180] 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. The slot may be a time unit based on numerology.

[0181] A slot may include a plurality of mini-slots. Each mini-slot may be composed of one or more symbols in the time domain. Also, a mini-slot may be called a sub-slot. A mini-slot may be composed of a smaller number of symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may be called a PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may be called a PDSCH (or PUSCH) mapping type B.

[0182] A radio frame, a sub-frame, a slot, a mini-slot, and a symbol all represent time units for transmitting signals. Different names corresponding to each of them may be used.

[0183] For example, one sub-frame may be called a Transmission Time Interval (TTI), or a plurality of consecutive sub-frames may be called a TTI, or one slot or one mini-slot may be called a TTI. That is, at least one of the sub-frame and the TTI may be a sub-frame (1 ms) in the existing LTE, or 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, a mini-slot, etc. instead of a sub-frame.

[0184] Here, the TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as the frequency bandwidth and transmission power that can be used in each terminal 20) to each terminal 20 in TTI units. Note that the definition of the TTI is not limited to this.

[0185] The TTI may be a transmission time unit such as a channel-coded data packet (transport block), a code block, a codeword, etc., or may be a processing unit such as scheduling or link adaptation. When the TTI is given, the time interval (e.g., the number of symbols) in which a transport block, a code block, a codeword, etc. are actually mapped may be shorter than the TTI.

[0186] Note that when one slot or one mini-slot is called a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) may be the minimum time unit for scheduling. Also, the number of slots (number of mini-slots) constituting the minimum time unit for the scheduling may be controlled.

[0187] A TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel.8 - 12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini-slot, a sub-slot, a slot, etc.

[0188] Note that a long TTI (e.g., a normal TTI, a subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, or a short TTI (e.g., a shortened TTI, etc.) may be read as a TTI having a TTI length less than that of a long TTI and not less than 1 ms.

[0189] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and in the frequency domain, it may include one or a plurality of consecutive subcarriers. The number of subcarriers included in the RB may be the same regardless of the numerology, and may be, for example, 12. The number of subcarriers included in the RB may be determined based on the numerology.

[0190] Also, the time domain of the RB may include one or more symbols, and may be the length of 1 slot, 1 mini-slot, 1 sub-frame, or 1 TTI. 1 TTI, 1 sub-frame, etc. may each be composed of one or more resource blocks.

[0191] Note that one or more RBs may be referred to as physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc.

[0192] Also, a resource block may be composed of one or more resource elements (REs). For example, 1 RE may be a radio resource region of 1 sub-carrier and 1 symbol.

[0193] A bandwidth part (BWP) (which may also be called a partial bandwidth, etc.) may represent a subset of consecutive common resource blocks (common RBs) for a certain numerology in a certain carrier. Here, the common RB may be specified by the index of the RB based on the common reference point of the carrier. The PRB is defined in a certain BWP and may be numbered within the BWP.

[0194] The BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). For a UE, one or more BWPs may be set within one carrier.

[0195] At least one of the set BWPs may be active, and the UE may not be assumed to transmit and receive a predetermined signal / channel outside the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be read as "BWP".

[0196] The structures such as the above-mentioned radio frames, sub-frames, slots, mini-slots, and symbols are merely examples. For example, the number of sub-frames included in a radio frame, the number of slots per sub-frame or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of sub-carriers included in an RB, and the number of symbols, symbol length, cyclic prefix (CP) length, etc. within a TTI can be changed in various ways.

[0197] In the present disclosure, for example, 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 in the plural form.

[0198] 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 "A and B are each different from C". Terms such as "separate", "coupled", etc. may also be interpreted in the same way as "different".

[0199] In the present disclosure, each aspect / embodiment described may be used alone, in combination, or switched and used during execution. Also, the notification of predetermined information (for example, the notification of "being X") is not limited to being explicitly performed, and may be performed implicitly (for example, without performing the notification of the predetermined information).

[0200] Note that in the present disclosure, an SS block or CSI-RS is an example of a synchronization signal or a reference signal.

[0201] As described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure can be implemented in modified and changed 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 for illustrative purposes only and does not have any limiting meaning for the present disclosure.

Explanation of Reference Numerals

[0202] 10 Base station 110 Transmitter 120 Receiver 130 Setting unit 140 Control unit 20 Terminal 210 Transmitter 220 Receiver 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

Claims

1. a receiving unit that receives setting information on a spatial relationship; determining whether the setting information on the spatial relationship is extended setting information on a spatial relationship that enables simultaneous changes in the setting of the spatial relationship and changes in the timing of periodic transmission opportunities, and when the setting information on the spatial relationship is the extended setting information on a spatial relationship, based on information indicating a change in the setting of a periodic uplink transmission opportunity added to the setting information on the spatial relationship, a control unit that changes the setting of the periodic uplink transmission opportunity; a transmitting unit that sets the spatial relationship based on the setting information on the spatial relationship and performs uplink transmission based on the changed setting of the periodic uplink transmission opportunity; A terminal comprising:

2. The control unit determines whether the setting information on the spatial relationship is the extended setting information on a spatial relationship based on a value set in a specific bit field included in the setting information on the spatial relationship. The terminal according to claim 1.

3. The control unit determines whether the setting information on the spatial relationship is the extended setting information on a spatial relationship based on a set value of a specific information element received by the receiving unit before receiving the setting information on the spatial relationship. The terminal according to claim 1.

4. The periodic uplink transmission opportunity is a transmission opportunity for a scheduling request or a channel state information report. The terminal according to claim 1.

5. a step of receiving setting information on a spatial relationship; Determine whether the setting information of the spatial relationship is the extended setting information of the spatial relationship, which enables simultaneous changes in the setting of the spatial relationship and the timing of the periodic transmission opportunity. When the setting information of the spatial relationship is the extended setting information of the spatial relationship, change the setting of the periodic uplink transmission opportunity based on the information indicating the change in the setting of the periodic uplink transmission opportunity added to the setting information of the spatial relationship. Set the spatial relationship based on the setting information of the spatial relationship, and perform uplink transmission based on the changed setting of the periodic uplink transmission opportunity. A communication method by a terminal comprising the above steps. Claim 6 A wireless communication system comprising a base station and a terminal. The base station Comprises a transmission unit for transmitting setting information of the spatial relationship. The terminal A receiving unit for receiving the setting information of the spatial relationship, Determine whether the setting information of the spatial relationship is the extended setting information of the spatial relationship, which enables simultaneous changes in the setting of the spatial relationship and the timing of the periodic transmission opportunity. When the setting information of the spatial relationship is the extended setting information of the spatial relationship, change the setting of the periodic uplink transmission opportunity based on the information indicating the change in the setting of the periodic uplink transmission opportunity added to the setting information of the spatial relationship. A control unit, Set the spatial relationship based on the setting information of the spatial relationship, and a transmission unit for performing uplink transmission based on the changed setting of the periodic uplink transmission opportunity. Comprising A wireless communication system.

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