WO2024181544A1 - 端末及び通信方法 - Google Patents
端末及び通信方法 Download PDFInfo
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- WO2024181544A1 WO2024181544A1 PCT/JP2024/007606 JP2024007606W WO2024181544A1 WO 2024181544 A1 WO2024181544 A1 WO 2024181544A1 JP 2024007606 W JP2024007606 W JP 2024007606W WO 2024181544 A1 WO2024181544 A1 WO 2024181544A1
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- pusch
- dci
- waveform
- terminal
- base station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/115—Grant-free or autonomous transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
- H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
Definitions
- the present invention relates to a terminal and a communication method in a wireless communication system.
- Non-Patent Document 1 For NR (New Radio) (also known as “5G”), the successor system to LTE (Long Term Evolution), technologies are being considered that meet the requirements of a large-capacity system, high data transmission speed, low latency, simultaneous connection of many terminals, low cost, and low power consumption (for example, Non-Patent Document 1).
- Non-Patent Document 2 Further coverage enhancements are being considered in 3GPP (registered trademark) Release 18 (see, for example, Non-Patent Document 2).
- coverage enhancements for PRACH Physical random access channel
- Enhancements in the power domain such as increasing the upper limit of UE power in CA (Carrier Aggregation) or DC (Dual Connectivity), are also being considered.
- Dynamic waveform switching between DFT-S-OFDM (Discrete Fourier Transform - Spread - OFDM) and CP-OFDM (Cyclic-Prefix OFDM) is also being considered.
- DCI Downlink Control Information
- PUSCH Physical Uplink Shared Channel
- the present invention has been made in consideration of the above points, and aims to dynamically switch waveforms in wireless communication systems.
- a terminal has a receiver that receives downlink control information from a base station that enables a CG (Configured grant)-PUSCH (Physical Uplink Shared Channel), a controller that dynamically switches the waveform to be applied to uplink transmission based on the downlink control information, and a transmitter that transmits the CG-PUSCH to the base station by applying the waveform.
- CG Configured grant
- PUSCH Physical Uplink Shared Channel
- the disclosed technology makes it possible to dynamically switch waveforms in a wireless communication system.
- FIG. 1 is a diagram showing a configuration example (1) of a wireless communication system.
- FIG. 1 is a diagram showing a configuration example (2) of a wireless communication system.
- 1 is a flowchart for explaining an example (1) of dynamic waveform switching according to an embodiment of the present invention.
- 11 is a flowchart for explaining an example (2) of dynamic waveform switching according to an embodiment of the present invention.
- 11 is a flowchart for explaining an example (3) of dynamic waveform switching according to an embodiment of the present invention.
- 11 is a flowchart for explaining an example (4) of dynamic waveform switching according to an embodiment of the present invention.
- 11 is a flowchart for explaining an example (5) of dynamic waveform switching according to an embodiment of the present invention.
- FIG. 1 is a diagram showing a configuration example (1) of a wireless communication system.
- FIG. 1 is a diagram showing a configuration example (2) of a wireless communication system.
- 1 is a flowchart for explaining an example (1) of dynamic waveform switching according to an embodiment of the present
- FIG. 2 is a diagram illustrating an example of a functional configuration of a base station 10 according to an embodiment of the present invention.
- FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal 20 according to an embodiment of the present invention.
- 2 is a diagram illustrating an example of a hardware configuration of a base station 10 or a terminal 20 according to an embodiment of the present invention.
- FIG. 2 is a diagram showing an example of the configuration of a vehicle 2001 according to an embodiment of the present invention.
- LTE Long Term Evolution
- NR NR
- SS Synchronization signal
- PSS Primary SS
- SSS Secondary SS
- PBCH Physical broadcast channel
- PRACH Physical random access channel
- PDCCH Physical Downlink Control Channel
- PDSCH Physical Downlink Shared Channel
- PUCCH Physical Uplink Control Channel
- PUSCH Physical Uplink Shared Channel
- NR corresponds to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc.
- NR- even if a signal is used in NR, it is not necessarily specified as "NR-".
- the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or another method (e.g., Flexible Duplex, etc.).
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- another method e.g., Flexible Duplex, etc.
- radio parameters and the like when radio parameters and the like are “configured,” this may mean that predetermined values are pre-configured, or that radio parameters notified from the base station 10 or the terminal 20 are configured.
- FIG. 1 is a diagram showing a configuration example (1) of a wireless communication system in an embodiment of the present invention.
- the wireless communication system in the embodiment of the present invention includes a base station 10 and a terminal 20.
- FIG. 1 shows one base station 10 and one terminal 20, this is an example, and there may be multiple of each.
- the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
- the physical resources of a wireless signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks.
- the base station 10 transmits a synchronization signal and system information to the terminal 20.
- the synchronization signal is, for example, NR-PSS and NR-SSS.
- the system information is, for example, transmitted by NR-PBCH and is also called broadcast information.
- the synchronization signal and system information may be called SSB (SS/PBCH block). As shown in FIG.
- the base station 10 transmits a control signal or data to the terminal 20 in DL (Downlink) and receives a control signal or data from the terminal 20 in UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming. In addition, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. In addition, both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) using CA (Carrier Aggregation). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 using DC (Dual Connectivity).
- SCell Secondary Cell
- PCell Primary Cell
- CA Carrier Aggregation
- the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10
- the terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives control signals or data from the base station 10 in DL and transmits control signals or data to the base station 10 in UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 also receives various reference signals transmitted from the base station 10, and performs measurement of the propagation path quality based on the reception results of the reference signals.
- M2M Machine-to-Machine
- the terminal 20 is capable of performing carrier aggregation, which bundles multiple cells (multiple CCs (Component Carriers)) together to communicate with the base station 10.
- carrier aggregation one PCell (Primary cell) and one or more SCells (Secondary cells) are used.
- a PUCCH-SCell having a PUCCH may also be used.
- FIG. 2 is a diagram showing an example (2) of a wireless communication system in an embodiment of the present invention.
- FIG. 2 shows an example of the configuration of a wireless communication system when DC (Dual connectivity) is implemented.
- a base station 10A serving as a MN (Master Node) and a base station 10B serving as a SN (Secondary Node) are provided.
- Base station 10A and base station 10B are each connected to a core network.
- Terminal 20 can communicate with both base station 10A and base station 10B.
- the cell group provided by base station 10A which is an MN
- the MCG Master Cell Group
- the cell group provided by base station 10B which is an SN
- the SCG Secondary Cell Group
- the MCG is composed of one PCell and one or more SCells
- the SCG is composed of one PSCell (Primary SCG Cell) and one or more SCells.
- the processing operations in this embodiment may be performed in the system configuration shown in FIG. 1, in the system configuration shown in FIG. 2, or in a system configuration other than these.
- Non-Patent Document 2 further coverage enhancements are being considered (e.g., Non-Patent Document 2).
- enhanced coverage of PRACH Physical random access channel
- Enhancements in the power domain such as increasing the UE power limit in CA (Carrier Aggregation) or DC (Dual Connectivity), are also being considered.
- Dynamic waveform switching between DFT-S-OFDM (Discrete Fourier Transform - Spread - OFDM) and CP-OFDM (Cyclic-Prefix OFDM) is also being considered.
- Both CP-OFDM and DFT-S-OFDM are supported for NR PUSCH. Waveform switching is performed by RRC signaling.
- CP-OFDM allows for flexible frequency resource allocation. For example, contiguous PRB arrangement and non-contiguous PRB arrangement are permitted. PRB allocation is not limited to multiples of 2, 3, and 5.
- DMRS and PUSCH are frequency multiplexed.
- DFT-S-OFDM can achieve a lower PAPR, which is advantageous for power-limited UEs.
- the network switches between the two waveforms based on the signal-to-noise ratio (SNR).
- SNR signal-to-noise ratio
- RRC reconfiguration is required to switch.
- dynamic waveform switching may be performed by notification using a DCI that schedules the UL. Dynamic waveform switching may also be performed by notification using a DCI that does not schedule the UL.
- FIG. 3 is a diagram for explaining an example (1) of dynamic waveform switching according to an embodiment of the present invention.
- the terminal 20 receives DCI from the base station 10 that does not include UL scheduling information.
- the terminal 20 dynamically switches the waveform to be applied to UL transmission based on the DCI.
- the terminal 20 applies the switched waveform and executes UL transmission to the base station 10.
- the DCI format that does not schedule the UL may be any of 1)-8) shown below.
- DCI format 1_0 i.e. DCI that schedules DL transmissions or triggers PDCCH ordered random access.
- DCI format 2_x i.e., group common DCI.
- DCI format 3_x i.e. DCI for scheduling sidelink.
- DCI format 4_x i.e. DCI for scheduling multicast or broadcast PDSCH.
- DCI format 0_x i.e. DCI for scheduling UL transmission.
- RNTI Radio Network Temporary Identifier
- the DCI may not schedule any data transmission or reception. For example, if the DCI does not schedule DL or UL data, and feedback of the DCI is reported from the UE, and a Type 2 HARQ-ACK codebook is configured, the DCI may include at least a Downlink Assignment Index (DAI) field.
- DAI Downlink Assignment Index
- Dynamic waveform switching may be performed using methods 1)-5) below.
- Add one bit to indicate the waveform For example, 0 may indicate the use of CP-OFDM and 1 may indicate the use of DFT-S-OFDM.
- a bit may indicate a toggle, and when it is 1, it may indicate a switch from the previous waveform.
- c) Add one bit to indicate whether the waveform configured by RRC signaling is to be used or a different waveform. For example, if CP-OFDM is configured by RRC signaling (i.e., the transform precoder is disabled), 0 may indicate that CP-OFDM (i.e., the same as the waveform configured by RRC signaling) is to be used, and 1 may indicate that DFT-S-OFDM (i.e., a different waveform from that configured by RRC signaling) is to be used.
- the existing notification may be MCS (modulation and coding scheme), FDRA (frequency domain resource assignment), rank number, or antenna port.
- MCS modulation and coding scheme
- FDRA frequency domain resource assignment
- rank number or antenna port.
- DFT-S-OFDM may be used even if CP-OFDM is set.
- rank number is 1, DFT-S-OFDM may be used even if CP-OFDM is set.
- a transform precoder may be configured for Msg3-PUSCH and/or CG-PUSCH and/or DG-PUSCH.
- the dynamic waveform switching based on 1) of operation 2) above may be applied only to a specific PUSCH. For example, it may be applied to a PUSCH that is not repeatedly transmitted, or to a PUSCH that is repeatedly transmitted, or to a PUSCH with high or low L1 priority.
- Add one bit to indicate the waveform For example, 0 may indicate the use of CP-OFDM and 1 may indicate the use of DFT-S-OFDM.
- a bit may indicate a toggle, and when it is 1, it may indicate a switch from the previous waveform.
- c) Add one bit to indicate whether the waveform configured by RRC signaling is to be used or a different waveform. For example, if CP-OFDM is configured by RRC signaling (i.e., the transform precoder is disabled), 0 may indicate that CP-OFDM (i.e., the same as the waveform configured by RRC signaling) is to be used, and 1 may indicate that DFT-S-OFDM (i.e., a different waveform from that configured by RRC signaling) is to be used.
- the existing notification may be a random access preamble index.
- one bit in a)-c) above may be a reserved bit that is reused.
- a transform precoder may be configured for Msg3-PUSCH and/or CG-PUSCH and/or DG-PUSCH.
- the dynamic waveform switching based on 2) above in operation 2) may be applied only to a specific PUSCH. For example, it may be applied to a PUSCH that is not repeatedly transmitted, or to a PUSCH that is repeatedly transmitted, or to a PUSCH with high or low L1 priority.
- dynamic waveform switching may be notified as shown in a)-d) below.
- Add one bit to indicate the waveform For example, 0 may indicate the use of CP-OFDM and 1 may indicate the use of DFT-S-OFDM.
- a bit may indicate a toggle, and when it is 1, it may indicate a switch from the previous waveform.
- c) Add one bit to indicate whether the waveform configured by RRC signaling is to be used or a different waveform. For example, if CP-OFDM is configured by RRC signaling (i.e., the transform precoder is disabled), 0 may indicate that CP-OFDM (i.e., the same as the waveform configured by RRC signaling) is to be used, and 1 may indicate that DFT-S-OFDM (i.e., a different waveform from that configured by RRC signaling) is to be used.
- the existing notification may be MCS, FDRA, rank number, or antenna port.
- the MCS is smaller than a predetermined threshold, DFT-S-OFDM may be used even if CP-OFDM is set.
- the rank number is 1, DFT-S-OFDM may be used even if CP-OFDM is set.
- a transform precoder may be configured for Msg3-PUSCH and/or CG-PUSCH and/or DG-PUSCH.
- the dynamic waveform switching based on 3) of operation 2) above may be applied only to a specific PUSCH. For example, it may be applied to a PUSCH that is not repeatedly transmitted, or to a PUSCH that is repeatedly transmitted, or to a PUSCH with high or low L1 priority.
- dynamic waveform switching may be signaled as shown below.
- the UE may verify that the DCI is a notification of dynamic waveform switching.
- a predefined value of the FDRA for example when the bits are all 0's or all 1's.
- c) A predefined value of the HARQ process number for example all bits are 0.
- d) A predefined value for the redundancy version for example all bits being 0.
- e) A predefined value of the MCS for example all bits 1.
- a predefined value of NDI for example all bits 0.
- a transform precoder may be configured for Msg3-PUSCH and/or CG-PUSCH and/or DG-PUSCH.
- the dynamic waveform switching based on 4) of operation 2) above may be applied only to a specific PUSCH. For example, it may be applied to a PUSCH that is not repeatedly transmitted, or to a PUSCH that is repeatedly transmitted, or to a PUSCH with high or low L1 priority.
- DCI indicates a carrier indicator, UL/SUL indicator, or BWP indicator, it may be assumed that dynamic waveform switching has been indicated.
- dynamic waveform switching may be signaled as shown below in a)-d).
- Add one bit to indicate the waveform For example, 0 may indicate the use of CP-OFDM and 1 may indicate the use of DFT-S-OFDM.
- a bit may indicate a toggle, and when it is 1, it may indicate a switch from the previous waveform.
- c) Add one bit to indicate whether the waveform configured by RRC signaling is to be used or a different waveform. For example, if CP-OFDM is configured by RRC signaling (i.e., the transform precoder is disabled), 0 may indicate that CP-OFDM (i.e., the same as the waveform configured by RRC signaling) is to be used, and 1 may indicate that DFT-S-OFDM (i.e., a different waveform from that configured by RRC signaling) is to be used.
- the new RNTI itself may indicate that the waveform will be different from the waveform set by RRC signaling, or that the waveform will be different from the previous waveform.
- a transform precoder may be configured for Msg3-PUSCH and/or CG-PUSCH and/or DG-PUSCH.
- DCI indicates a carrier indicator, UL/SUL indicator, or BWP indicator, it may be assumed that dynamic waveform switching has been indicated.
- the UE may operate as shown in a)-c) below.
- the UE may determine the waveform to be applied to PUSCH transmission based on the one bit. For example, if the one bit is 0, the waveform may be the waveform set by RRC signaling, and if the one bit is 1, the waveform may be switched to a waveform different from the waveform set by RRC signaling.
- the UE may switch the waveform to a waveform different from the waveform configured by the RRC signaling.
- the UE may determine the waveform to be applied to the PUSCH transmission based on the notified 1 bit. For example, if the 1 bit is 0, the UE may continue to use the waveform set by the RRC signaling, and if the 1 bit is 1, the UE may switch the waveform to a waveform different from the waveform set by the RRC signaling.
- Operation 2 When the UE configures or signals dynamic waveform switching by a DCI that does not schedule UL or a DCI that schedules UL, the configuration or signaling may be applied to the transmissions shown in 1)-5) below.
- Type 1 CG-PUSCH 1) PUSCH scheduled by other non-fallback DCI (DCI format 0_1 or 0_2) 2) PUSCH scheduled by other fallback DCI (DCI format 0_0) 3) Type 1 CG-PUSCH 4) Type 2 CG-PUSCH 5) Msg3-PUSCH
- the UE may behave as follows:
- dynamic waveform switching may be applied to DG-PUSCH only by DCI that schedules the corresponding UL. Also, as shown in Table 1, dynamic waveform switching may be applied to CG-PUSCH only by DCI that does not schedule the UL.
- dynamic waveform switching using both DCI that schedules the UL and DCI that does not schedule the UL may be applied to both DG-PUSCH and CG-PUSCH. Furthermore, the latest DCI that satisfies the squadron line requirements described below for the target PUSCH aircraft may be applied.
- dynamic waveform switching may be applied to DG-PUSCH using both DCI that schedules the corresponding UL and DCI that does not schedule the UL. Also, as shown in Table 3, dynamic waveform switching may be applied to CG-PUSCH using only DCI that does not schedule the UL.
- dynamic waveform switching may be applied to DG-PUSCH using only the DCI that schedules the corresponding UL. Also, as shown in Table 4, dynamic waveform switching may be applied to CG-PUSCH using both DCI that schedules the UL and DCI that does not schedule the UL. Furthermore, the latest DCI that satisfies the squadron line requirements described below for the target PUSCH machine may be applied.
- the DG-PUSCH operation may also be applied to the PUSCH transmission at the first CG-PUSCH opportunity after the CG is enabled.
- dynamic waveform switching using DCI to schedule DG-PUSCH may be applied to PUSCH transmission at the first CG-PUSCH opportunity after CG is enabled.
- dynamic waveform switching using DCI to schedule CG-PUSCH may be applied to PUSCH transmission at the first CG-PUSCH opportunity after CG is enabled.
- DG-PUSCH operations may also be applied to PUSCH transmissions in all enabled CG-PUSCH opportunities.
- the following timeline requirements may be applied between a DCI that does not schedule a UL and notifies dynamic waveform switching, and a PUSCH to which dynamic waveform switching is applied.
- a specified period may be required between the DCI and the PUSCH.
- the specified period may be any of 1)-5) below.
- a period specified by the specification e.g., 28 symbols.
- a period determined based on a PUSCH processing time see Section 6.4 of Non-Patent Document 3).
- a period set by RRC signaling For a period notified by the MAC-CE.
- the terminal 20 may ignore the DCI that notifies the dynamic waveform switching.Furthermore, if the above-mentioned timeline requirements are not met between a DCI that does not schedule an UL that notifies dynamic waveform switching and a PUSCH that applies dynamic waveform switching, the terminal 20 may not transmit the PUSCH.
- the DCI and/or MAC-CE notifying dynamic waveform switching may be valid for a predetermined period of time.
- the predetermined period of time may be any of 1)-5) below.
- a period of time specified by the specification from the time the notification is received for example 10 slots or 10 ms from the DCI opportunity.
- a period set by RRC signaling from the time the notification is received 3) The period notified by the MAC-CE from the time the notification is received.
- the period from the time of receiving the notification to the corresponding scheduled PUSCH. Applies only to DCIs that schedule UL. 6) The period from the time the notification is received until another DCI notifying dynamic waveform switching is received.
- the specified period may depend on the type of notification. For example, the same period may be applied to both types of notifications. For example, the notification may be valid for the same specified period from the opportunity for the notification in both a notification by DCI or MAC-CE that schedules the UL and a notification by DCI or MAC-CE that does not schedule the UL.
- different periods may be set for different notification types. For example, a notification by a DCI that schedules the UL may be valid until the corresponding scheduled PUSCH. A DCI that does not schedule the UL may be valid for a certain period from the DCI opportunity.
- the terminal 20 may apply a waveform (e.g., a transform precoder) set by RRC signaling, or may apply a waveform notified by DCI that schedules the latest UL.
- a waveform e.g., a transform precoder
- the start time of the specified period may be any of 1)-5) below.
- periods may be defined between the actual start of the specified period and the start of 1)-5) above.
- the other periods may be, for example, X symbols.
- FIG. 4 is a diagram for explaining an example (2) of dynamic waveform switching according to an embodiment of the present invention.
- the terminal 20 receives DCI from the base station 10, which does not include UL scheduling information instructing dynamic waveform switching.
- the terminal 20 transmits to the base station 10 whether or not the DCI has been successfully decoded. Note that the DCI in step S201 may be replaced with DCI that schedules the UL.
- feedback regarding reception of DCI that does not include UL scheduling information instructing dynamic waveform switching may be transmitted to the base station 10.
- the HARQ-ACK for that DL transmission may implicitly notify whether the DCI that does not include UL scheduling information instructing dynamic waveform switching was successfully decoded.
- the terminal 20 switches the waveform by the DCI immediately after the HARQ-ACK feedback. Also, for example, it may be assumed that the terminal 20 switches the waveform by the DCI X symbols after the HARQ-ACK feedback.
- the value of X may be specified in the specifications (e.g., 28 symbols), may be set by RRC signaling (e.g., introducing a new RRC parameter), may be notified by MAC-CE, or may be notified by DCI. Note that the terminal 20 does not need to assume that it will switch the waveform when the DCI is not correctly detected.
- a HARQ-ACK for that DCI may be generated independently.
- the terminal 20 switches the waveform by the DCI immediately after the HARQ-ACK feedback. Also, for example, it may be assumed that the terminal 20 switches the waveform by the DCI X symbols after the HARQ-ACK feedback.
- the value of X may be specified in the specifications (e.g., 28 symbols), may be set by RRC signaling (e.g., introducing a new RRC parameter), may be notified by MAC-CE, or may be notified by DCI. Note that the terminal 20 does not need to assume that it will switch the waveform when the DCI is not correctly detected.
- the HARQ-ACK codebook that contains the HARQ-ACK may be the first sub-codebook or the second sub-codebook.
- a UL MAC-CE may be introduced that provides feedback on whether or not DCI instructing dynamic waveform switching is received.
- the terminal 20 switches the waveform by the DCI immediately after the MAC-CE transmission. Also, for example, it may be assumed that the terminal 20 switches the waveform by the DCI after X symbols of the MAC-CE transmission.
- the value of X may be specified in the specifications (e.g., 28 symbols), may be set by RRC signaling (e.g., introducing a new RRC parameter), may be notified by MAC-CE, or may be notified by DCI. Note that the terminal 20 does not need to assume that it will switch the waveform when the DCI is not correctly detected.
- a state in which the MAC-CE is enabled may be defined.
- the MAC-CE may be enabled when a DCI that does not schedule the UL and indicates dynamic waveform switching is correctly decoded.
- DWS Dynamic Waveform Switching
- a new 1-bit field may be added to the DCI that schedules the UL. Note that the current size alignment procedure does not need to be changed between the DCI that schedules the UL and the DCI that schedules the DL.
- DWS may be applied to a PUSCH scheduled by DCI format 0_1 or 0_2.
- DWS may be applied only to a type 2 CG-PUSCH.
- DWS may be applied to a type 1 CG-PUSCH and a type 2 CG-PUSCH.
- DWS may be applied to a PUSCH scheduled by a DCI format other than DCI format 0_1 or 0_2.
- type 1 CG-PUSCH may be a PUSCH in which periodic transmission is started by scheduling through RRC signaling.
- Type 2 CG-PUSCH may be a PUSCH in which parameters required for scheduling are set through RRC signaling, and then enabled by DCI to start periodic transmission.
- the new 1-bit field that notifies DWS for DCI format 0_0 may not be supported.
- Table 5 shows examples of combinations of DCI formats and PUSCHs that support notifications related to DWS.
- DCI format 0_0 may or may not support DWS-related notifications for DG-PUSCH and type 2 CG-PUSCH.
- DCI format 0_1 or 0_2 may or may not support DWS-related notifications for DG-PUSCH.
- DCI format 0_1 or 0_2 may or may not support DWS-related notifications for type 2 CG-PUSCH.
- FIG. 5 is a flowchart for explaining an example (3) of dynamic waveform switching according to an embodiment of the present invention.
- the terminal 20 receives a specific DCI format that enables type 2 CG-PUSCH from the base station 10.
- the specific DCI format in step S301 may be any of 1)-4) below.
- DCI Format 0_0 1) DCI Format 0_0 2) DCI Format 0_1 3) DCI Format 0_2 4) Other DCI formats, e.g., DCI formats for scheduling multiple PUSCHs across multiple cells
- the terminal 20 dynamically switches the waveform to be applied to the UL transmission.
- the terminal 20 transmits a type 2 CG-PUSCH to the base station 10 by applying the switched waveform.
- DWS for type 2 CG-PUSCH enabled by DCI format 0_0 may be supported based on a specific method. Also, DWS for type 2 CG-PUSCH enabled by DCI format 0_0 may be supported based on a specific method only if certain conditions are met.
- FIG. 6 is a flowchart for explaining an example (4) of dynamic waveform switching according to an embodiment of the present invention.
- the terminal 20 receives DCI format 0_0 that enables type 2 CG-PUSCH from the base station 10.
- the terminal 20 determines whether a specific condition is satisfied.
- the specific condition in step S402 may be at least one of 1) and 2) shown below.
- the terminal 20 may determine that the specific condition is satisfied based on the type of search space in which DCI format 0_0 is transmitted. For example, the terminal 20 may determine that the specific condition is satisfied when DCI format 0_0 is a UE-specific search space. Also, for example, the terminal 20 may determine that the specific condition is satisfied when DCI format 0_0 is a common search space.
- the terminal 20 may determine that the specific condition is met based on the result of comparing the size of DCI format 0_0 with the size of another DCI format (e.g., DCI format 1_0). For example, if the size of DCI format 0_0 is smaller than the size of DCI format 1_0, the terminal 20 may determine that the specific condition is met. Also, for example, if the size of DCI format 0_0 not including the DWS notification field is smaller than the size of DCI format 1_0, the terminal 20 may determine that the specific condition is met. Also, for example, if the size of DCI format 0_0 before taking the DWS notification field into consideration is smaller than the size of DCI format 1_0, the terminal 20 may determine that the specific condition is met.
- DCI format 0_0 before taking the DWS notification field into consideration is smaller than the size of DCI format 1_0
- the terminal 20 may determine that the specific condition is met.
- step S402 If the specific condition is met in step S402, proceed to step S403 (YES in S402), and if the specific condition is not met, proceed to step S406 (NO in S402).
- step S403 the terminal 20 supports DWS based on a specific method.
- the specific method in step S403 may be at least one of 1) and 2) shown below.
- the terminal 20 may determine whether to execute DWS based on the new 1-bit DCI field.
- the terminal 20 determines whether or not DWS has been notified based on one or more existing DCI fields. For example, a threshold MCS_th may be set for the MCS in advance, and the MCS notified by the DCI may be compared with the threshold MCS_th to determine whether or not to execute DWS. For example, the terminal 20 may determine to execute DWS when the MCS notified by the DCI is smaller than the threshold MCS_th.
- step S404 the terminal 20 decides whether or not to execute DWS. If DWS is to be executed, the process proceeds to step S405 (YES in S404), and if DWS is not to be executed, the process proceeds to step S407 (NO in S404).
- step S405 the terminal 20 transmits a type 2 CG-PUSCH to the base station 10 by applying the waveform dynamically switched by the DWS.
- step S406 DWS is not supported.
- step S407 the terminal 20 transmits a type 2 CG-PUSCH to the base station 10.
- the terminal 20 may decide to execute DWS if the answer is YES in step S402, and may decide not to execute DWS if the answer is NO in step S402.
- DWS for DG-PUSCH scheduled by DCI format 0_0 may be supported based on a specific method. Also, DWS for DG-PUSCH scheduled by DCI format 0_0 may be supported based on a specific method only if certain conditions are met.
- FIG. 7 is a flowchart for explaining an example (5) of dynamic waveform switching according to an embodiment of the present invention.
- the terminal 20 receives DCI format 0_0 for scheduling DG-PUSCH from the base station 10.
- the terminal 20 determines whether a specific condition is satisfied.
- the specific condition in step S502 may be at least one of 1) and 2) shown below.
- the terminal 20 may determine that the specific condition is satisfied based on the type of search space in which DCI format 0_0 is transmitted. For example, the terminal 20 may determine that the specific condition is satisfied when DCI format 0_0 is a UE-specific search space. Also, for example, the terminal 20 may determine that the specific condition is satisfied when DCI format 0_0 is a common search space.
- the terminal 20 may determine that the specific condition is met based on the result of comparing the size of DCI format 0_0 with the size of another DCI format (e.g., DCI format 1_0). For example, if the size of DCI format 0_0 is smaller than the size of DCI format 1_0, the terminal 20 may determine that the specific condition is met. Also, for example, if the size of DCI format 0_0 not including the DWS notification field is smaller than the size of DCI format 1_0, the terminal 20 may determine that the specific condition is met. Also, for example, if the size of DCI format 0_0 before taking the DWS notification field into consideration is smaller than the size of DCI format 1_0, the terminal 20 may determine that the specific condition is met.
- DCI format 0_0 before taking the DWS notification field into consideration is smaller than the size of DCI format 1_0
- the terminal 20 may determine that the specific condition is met.
- step S502 If the specific condition is met in step S502, proceed to step S503 (YES in S502); if the specific condition is not met, proceed to step S506 (NO in S502).
- step S503 the terminal 20 supports DWS based on a specific method.
- the specific method in step S503 may be at least one of 1) and 2) shown below.
- the terminal 20 may determine whether to execute DWS based on the new 1-bit DCI field.
- the terminal 20 determines whether or not DWS has been notified based on one or more existing DCI fields. For example, a threshold MCS_th may be set for the MCS in advance, and the MCS notified by the DCI may be compared with the threshold MCS_th to determine whether or not to execute DWS. For example, the terminal 20 may determine to execute DWS when the MCS notified by the DCI is smaller than the threshold MCS_th.
- step S504 the terminal 20 decides whether or not to execute DWS. If DWS is to be executed, the process proceeds to step S505 (YES in S504), and if DWS is not to be executed, the process proceeds to step S507 (NO in S504).
- step S505 the terminal 20 transmits DG-PUSCH to the base station 10 by applying the waveform dynamically switched by the DWS.
- step S506 DWS is not supported.
- step S507 the terminal 20 transmits DG-PUSCH to the base station 10.
- the terminal 20 may decide to execute DWS if the answer is YES in step S502, and may decide not to execute DWS if the answer is NO in step S502.
- the settings shown in 1)-7) below may be set only when new RRC parameters (e.g. xxx-r18) are set.
- the above-described embodiment allows the wireless communication system to dynamically switch waveforms using DCI that does not schedule UL or DCI that schedules UL.
- the presence or absence of support for DWS can be set based on the format of the DCI that enables it.
- waveforms can be dynamically switched in wireless communication systems.
- the base station 10 and the terminal 20 include functions for implementing the above-mentioned embodiments. However, the base station 10 and the terminal 20 may each include only a part of the functions in the embodiments.
- Fig. 8 is a diagram showing an example of the functional configuration of the base station 10 in the embodiment of the present invention.
- the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140.
- the functional configuration shown in Fig. 8 is merely an example. As long as the operation related to the embodiment of the present invention can be executed, the names of the functional divisions and the functional units may be any.
- the transmitting unit 110 and the receiving unit 120 may be called a communication unit.
- the transmitting unit 110 has a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly.
- the transmitting unit 110 also transmits inter-network node messages to other network nodes.
- the receiving unit 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of a higher layer from the received signals.
- the transmitting unit 110 also has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, etc. to the terminal 20.
- the receiving unit 120 also receives inter-network node messages from other network nodes.
- the setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20.
- the contents of the setting information include, for example, information related to the DWS.
- the control unit 140 performs control related to the DWS as described in the embodiment.
- the functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120.
- Fig. 9 is a diagram showing an example of the functional configuration of the terminal 20 in the embodiment of the present invention.
- the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240.
- the functional configuration shown in Fig. 9 is merely an example.
- the names of the functional divisions and functional units may be any as long as the operations related to the embodiment of the present invention can be executed.
- the transmitting unit 210 and the receiving unit 220 may be called a communication unit.
- the transmitter 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly.
- the receiver 220 wirelessly receives various signals and acquires higher layer signals from the received physical layer signals.
- the receiver 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL/SL control signals, etc. transmitted from the base station 10.
- the transmitter 210 transmits PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel), etc. to another terminal 20 as D2D communication, and the receiver 220 receives PSCCH, PSSCH, PSDCH, PSBCH, etc. from the other terminal 20.
- PSCCH Physical Sidelink Control Channel
- PSSCH Physical Sidelink Shared Channel
- PSDCH Physical Sidelink Discovery Channel
- PSBCH Physical Sidelink Broadcast Channel
- the setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220.
- the setting unit 230 also stores setting information that is set in advance.
- the contents of the setting information include, for example, information related to DWS.
- the control unit 240 performs control related to the DWS as described in the embodiment.
- the functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and the functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220.
- each functional block may be realized using one device that is physically or logically coupled, or may be realized using two or more devices that are physically or logically separated and directly or indirectly connected (for example, using wires, wirelessly, etc.).
- the functional block may be realized by combining the one device or the multiple devices with software.
- Functions include, but are not limited to, judgement, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment.
- a functional block (component) that performs the transmission function is called a transmitting unit or transmitter.
- the base station 10, terminal 20, etc. in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
- FIG. 10 is a diagram showing an example of the hardware configuration of the base station 10 and terminal 20 in one embodiment of the present disclosure.
- the above-mentioned base station 10 and terminal 20 may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.
- the term "apparatus" can be interpreted as a circuit, device, unit, etc.
- the hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.
- the functions of the base station 10 and the terminal 20 are realized by loading specific software (programs) onto hardware such as the processor 1001 and the storage device 1002, causing the processor 1001 to perform calculations, control communications by the communication device 1004, and control at least one of the reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
- the processor 1001 for example, operates an operating system to control the entire computer.
- the processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, etc.
- CPU central processing unit
- control unit 140, control unit 240, etc. may be realized by the processor 1001.
- the processor 1001 reads out a program (program code), software module, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to the program.
- the program is a program that causes a computer to execute at least a part of the operations described in the above-mentioned embodiment.
- the control unit 140 of the base station 10 shown in FIG. 8 may be stored in the storage device 1002 and realized by a control program that runs on the processor 1001.
- the control unit 240 of the terminal 20 shown in FIG. 9 may be stored in the storage device 1002 and realized by a control program that runs on the processor 1001.
- the processor 1001 may be implemented by one or more chips.
- the program may be transmitted from a network via a telecommunication line.
- the storage device 1002 is a computer-readable recording medium and may be composed of, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), a RAM (Random Access Memory), etc.
- the storage device 1002 may also be called a register, a cache, a main memory, etc.
- the storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method relating to one embodiment of the present disclosure.
- the auxiliary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc.
- the above-mentioned storage medium may be, for example, a database, a server, or other suitable medium that includes at least one of the storage device 1002 and the auxiliary storage device 1003.
- the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc.
- the communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., to realize at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD).
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- the transmitting/receiving antenna, an amplifier unit, a transmitting/receiving unit, a transmission path interface, etc. may be realized by the communication device 1004.
- the transmitting/receiving unit may be implemented as a transmitting unit or a receiving unit that is physically or logically separated.
- the input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside.
- the output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one structure (e.g., a touch panel).
- each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
- the bus 1007 may be configured using a single bus, or may be configured using different buses between each device.
- 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 the functional blocks may be realized by the hardware.
- the processor 1001 may be implemented using at least one of these pieces of hardware.
- FIG. 11 shows an example configuration of a vehicle 2001.
- the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021-2029, an information service unit 2012, and a communication module 2013.
- a communication device mounted on the vehicle 2001 and may be applied to the communication module 2013, for example.
- the drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.
- the steering unit 2003 includes at least a steering wheel (also called a handlebar), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.
- the electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001.
- the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
- Signals from the various sensors 2021-2029 include a current signal from a current sensor 2021 that senses the motor current, a front and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, a front and rear wheel air pressure signal obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.
- the information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices.
- the information service unit 2012 uses information acquired from an external device via the communication module 2013 or the like to provide various multimedia information and multimedia services to the occupants of the vehicle 2001.
- the information service unit 2012 may include input devices (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accept input from the outside, and may also include output devices (e.g., a display, a speaker, an LED lamp, a touch panel, etc.) that perform output to the outside.
- input devices e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.
- output devices e.g., a display, a speaker, an LED lamp, a touch panel, etc.
- the driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driving burden on the driver, such as a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (e.g., GNSS, etc.), map information (e.g., high definition (HD) maps, autonomous vehicle (AV) maps, etc.), a gyro system (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chip, and an AI processor, as well as one or more ECUs that control these devices.
- the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize driving assistance functions or autonomous driving functions.
- the communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port.
- the communication module 2013 transmits and receives data via the communication port 2033 between the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 29, which are provided on the vehicle 2001.
- the communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication.
- the communication module 2013 may be located either inside or outside the electronic control unit 2010.
- the external device may be, for example, a base station, a mobile station, etc.
- the communication module 2013 may transmit at least one of the signals from the various sensors 2021-2028 described above input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication.
- the electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc. may be referred to as input units that accept input.
- the PUSCH transmitted by the communication module 2013 may include information based on the above input.
- the communication module 2013 receives various information (traffic information, signal information, vehicle distance information, etc.) transmitted from an external device, and displays it on the information service unit 2012 provided in the vehicle 2001.
- the information service unit 2012 may be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 2013).
- the communication module 2013 also stores various information received from an external device in a memory 2032 that can be used by the microprocessor 2031.
- the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.
- a terminal having a receiving unit that receives downlink control information for enabling a CG (Configured grant)-PUSCH (Physical Uplink Shared Channel) from a base station, a control unit that dynamically switches a waveform to be applied to uplink transmission based on the downlink control information, and a transmitting unit that transmits the CG-PUSCH to the base station by applying the waveform.
- CG Configured grant
- PUSCH Physical Uplink Shared Channel
- the control unit may determine whether or not to switch the waveform to be applied to the uplink transmission based on the format of the downlink control information. With this configuration, it is possible to set the type 2 CG-PUSCH based on the format of the DCI that enables support or non-support of DWS.
- the control unit may determine whether or not dynamic waveform switching (DWS) is supported based on the type of search space in which the downlink control information is transmitted or the size of the downlink control information. With this configuration, it is possible to set, for type 2 CG-PUSCH, whether or not DWS is supported based on the format of DCI that enables it.
- DWS dynamic waveform switching
- the control unit may switch the waveform to be applied to the uplink transmission when the MCS (Modulation and coding scheme) value included in the downlink control information is smaller than a threshold value.
- MCS Modulation and coding scheme
- the receiver receives downlink control information for scheduling a dynamic grant (DG)-PUSCH from a base station, and the controller may dynamically switch the waveform to be applied to uplink transmission based on the downlink control information for scheduling the DG-PUSCH.
- the DG-PUSCH can be set based on the format of DCI that enables support or non-support of DWS.
- a communication method in which a terminal executes the steps of receiving downlink control information for enabling a CG (Configured grant)-PUSCH (Physical Uplink Shared Channel) from a base station, dynamically switching a waveform to be applied to uplink transmission based on the downlink control information, and transmitting the CG-PUSCH to the base station by applying the waveform.
- CG Configured grant
- PUSCH Physical Uplink Shared Channel
- the operations of multiple functional units may be physically performed by one part, or the operations of one functional unit may be physically performed by multiple parts.
- the order of the processing procedures described in the embodiment may be changed as long as there is no contradiction.
- 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 operated by the processor possessed by the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor possessed by the terminal 20 in accordance with an embodiment of the present invention may each be stored in random access memory (RAM), flash memory, read only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
- the notification of information is not limited to the aspects/embodiments described in the present disclosure and may be performed using other methods.
- the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination of these.
- RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.
- Each aspect/embodiment described in this disclosure is a mobile communication system that is compatible with LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or decimal number)), FRA (Future Ra).
- the present invention may be applied to at least one of systems using IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other appropriate systems, and next-generation systems that are expanded, modified, created, or defined based on these. It may also be applied to a combination of multiple systems (for example, a combination of at least one of LTE and LTE-A with 5G, etc.).
- certain operations that are described as being performed by the base station 10 may in some cases be performed by its upper node.
- various operations performed for communication with a terminal 20 may be performed by at least one of the base station 10 and other network nodes other than the base station 10 (such as, but not limited to, an MME or S-GW).
- the base station 10 may be a combination of multiple other network nodes (such as an MME and an S-GW).
- the information or signals described in this disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). They may be input and output via multiple network nodes.
- the input and output information may be stored in a specific location (e.g., memory) or may be managed using a management table.
- the input and output information may be overwritten, updated, or added to.
- the output information may be deleted.
- the input information may be sent to another device.
- the determination in this disclosure may be based on a value represented by one bit (0 or 1), a Boolean (true or false) value, or a comparison of numerical values (e.g., a comparison with a predetermined value).
- Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
- Software, instructions, information, etc. may also be transmitted and received via a transmission medium.
- a transmission medium For example, if the software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and/or wireless technologies (such as infrared, microwave), then at least one of these wired and wireless technologies is included within the definition of a transmission medium.
- wired technologies such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)
- wireless technologies such as infrared, microwave
- the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
- the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.
- the channel and the symbol may be a signal (signaling).
- the signal may be a message.
- the component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.
- system and “network” are used interchangeably.
- a radio resource may be indicated by an index.
- the names used for the parameters described above are not intended to be limiting in any way. Furthermore, the formulas etc. using these parameters may differ from those explicitly disclosed in this disclosure.
- the various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.
- base station BS
- wireless base station base station
- base station device fixed station
- NodeB nodeB
- eNodeB eNodeB
- gNodeB gNodeB
- access point e.g., "transmission point”
- gNodeB gNodeB
- a base station may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.
- a base station can accommodate one or more (e.g., three) cells.
- a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)).
- RRH Remote Radio Head
- the term "cell” or “sector” refers to a part or the entire coverage area of at least one of the base station and base station subsystems that provide communication services in this coverage.
- a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.
- MS Mobile Station
- UE User Equipment
- a mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
- At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc.
- At least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.
- the moving object is a movable object, and the moving speed is arbitrary. It also includes the case where the moving object is stopped.
- the moving object includes, but is not limited to, for example, a vehicle, a transport vehicle, an automobile, a motorcycle, a bicycle, a connected car, an excavator, a bulldozer, a wheel loader, a dump truck, a forklift, a train, a bus, a handcar, a rickshaw, a ship and other watercraft, an airplane, a rocket, an artificial satellite, a drone (registered trademark), a multicopter, a quadcopter, a balloon, and objects mounted thereon.
- the moving object may also be a moving object that runs autonomously based on an operation command.
- At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations.
- at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be read as a user terminal.
- each aspect/embodiment of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)).
- the terminal 20 may be configured to have the functions of the base station 10 described above.
- terms such as "uplink” and "downlink” may be read as terms corresponding to terminal-to-terminal communication (for example, "side").
- the uplink channel, downlink channel, etc. may be read as a side channel.
- the user terminal in this disclosure may be interpreted as a base station.
- the base station may be configured to have the functions of the user terminal described above.
- determining may encompass a wide variety of actions.
- Determining and “determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., searching in a table, database, or other data structure), and considering ascertaining as “judging” or “determining.”
- determining and “determining” may include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and considering ascertaining as “judging” or “determining.”
- judgment” and “decision” can include considering resolving, selecting, choosing, establishing, comparing, etc., to have been “judged” or “decided.” In other words, “judgment” and “decision” can include considering some action to have been “judged” or “decided.” Additionally, “judgment (decision)” can be interpreted as “assuming,” “ex
- connection refers to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” to each other.
- the coupling or connection between elements may be physical, logical, or a combination thereof.
- “connected” may be read as "access.”
- two elements may be considered to be “connected” or “coupled” to each other using at least one of one or more wires, cables, and printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.
- the reference signal may also be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.
- the phrase “based on” does not mean “based only on,” unless expressly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
- any reference to an element using a designation such as "first,” “second,” etc., used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must precede the second element in some way.
- a radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.
- Numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel. Numerology may indicate, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, a specific filtering process performed by the transceiver in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.
- SCS subcarrier spacing
- TTI transmission time interval
- radio frame structure a specific filtering process performed by the transceiver in the frequency domain
- a specific windowing process performed by the transceiver in the time domain etc.
- a slot may consist of one or more symbols in the time domain (such as OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.).
- a slot may be a time unit based on numerology.
- a slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot.
- a PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A.
- a PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.
- Radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals. Radio frame, subframe, slot, minislot, and symbol may each be referred to by a different name that corresponds to the radio frame, subframe, slot, minislot, and symbol.
- one subframe may be called a Transmission Time Interval (TTI)
- TTI Transmission Time Interval
- multiple consecutive subframes may be called a TTI
- one slot or one minislot may be called a TTI.
- at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms.
- the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.
- TTI refers to, for example, the smallest time unit for scheduling in wireless communication.
- a base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units.
- wireless resources such as frequency bandwidth and transmission power that can be used by each terminal 20
- TTI is not limited to this.
- the TTI may be a transmission time unit for a channel-coded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc.
- the time interval e.g., the number of symbols
- the time interval in which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.
- one or more TTIs may be the minimum time unit of scheduling.
- the number of slots (minislots) that constitute the minimum time unit of scheduling may be controlled.
- a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
- TTI shorter than a normal TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
- a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms
- a short TTI e.g., a shortened TTI, etc.
- TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.
- a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
- the number of subcarriers included in an RB may be the same regardless of the numerology, and may be, for example, 12.
- the number of subcarriers included in an RB may be determined based on the numerology.
- the time domain of an RB may include one or more symbols and may be one slot, one minislot, one subframe, or one TTI in length.
- One TTI, one subframe, etc. may each be composed of one or more resource blocks.
- one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.
- PRB physical resource block
- SCG sub-carrier group
- REG resource element group
- PRB pair an RB pair, etc.
- a resource block may be composed of one or more resource elements (REs).
- REs resource elements
- one RE may be a radio resource area of one subcarrier and one symbol.
- a bandwidth part which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by an index of the RB relative to a common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within the BWP.
- the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
- UL BWP UL BWP
- DL BWP DL BWP
- One or more BWPs may be configured for a UE within one carrier.
- At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
- BWP bitmap
- radio frames, subframes, slots, minislots, and symbols are merely examples.
- the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, as well as the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.
- a and B are different may mean “A and B are different from each other.”
- the term may also mean “A and B are each different from C.”
- Terms such as “separate” and “combined” may also be interpreted in the same way as “different.”
- notification of specific information is not limited to being done explicitly, but may be done implicitly (e.g., not notifying the specific information).
- 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 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheel 2008 Rear wheel 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 Rotational speed sensor 2023 Air pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving assistance system unit 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (IO port)
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Abstract
Description
2)いずれのPUSCHを動的波形切り替えの通知の対象とするか。例えば、CG-PUSCHのみを対象とするか、DG-PUSCHも対象とするか。
3)いつどのくらい動的波形切り替えの通知を有効とするか。
4)基地局10と端末20間で使用する波形の想定をどのように一致させるか。
2)DCIフォーマット1_0.すなわちDL送信をスケジューリングするか又はPDCCHオーダランダムアクセスをトリガするDCI。
3)DL-SPS(Semi persistent scheduling)又はタイプ2CG-PUSCHを有効化する又は解放するDCIフォーマット。
4)DCIフォーマット2_x。すなわちグループコモンDCI。
5)DCIフォーマット3_x。すなわちサイドリンクをスケジューリングするDCI。
6)DCIフォーマット4_x。すなわちマルチキャスト又はブロードキャストPDSCHをスケジューリングするDCI。
7)DCIフォーマット0_x。すなわちUL送信をスケジューリングするDCI。7)は動作1)では除外されてもよく、動作2)-動作4)で適用されてもよい。
8)新たなRNTI(Radio Network Temporary Identifier)によりスクランブリングされるCRCを伴うDCIフォーマット。
b)FDRAの所定の値。例えば、ビットがすべて0又はすべて1の場合。
c)HARQプロセスナンバの所定の値。例えば、ビットがすべて0の場合。
d)リダンダンシバージョンの所定の値。例えば、ビットがすべて0の場合。
e)MCSの所定の値。例えば、ビットがすべて1の場合。
f)NDIの所定の値。例えば、ビットがすべて0の場合。
2)他のフォールバックDCI(DCIフォーマット0_0)によりスケジューリングされたPUSCH
3)タイプ1CG-PUSCH
4)タイプ2CG-PUSCH
5)Msg3-PUSCH
2)PUSCH処理時間に基づいて定まる期間。(非特許文献3の6.4節参照)
3)RRCシグナリングにより設定された期間。
4)MAC-CEにより通知された期間。
5)DCIにより通知された期間。
2)当該通知を受信した時点からRRCシグナリングにより設定された期間。
3)当該通知を受信した時点からMAC-CEにより通知された期間。
4)当該通知を受信した時点からDCIにより通知された期間。
5)当該通知を受信した時点から対応するスケジューリングされるPUSCHまでの期間。ULをスケジューリングするDCIのみに適用される。
6)当該通知を受信した時点から動的波形切り替えを通知する他のDCIを受信するまでの期間。
2)当該DCIによりスケジューリングされるPDSCHの時点
3)当該DCIに対するHARQ-ACKを送信する時点
4)RRCシグナリングにより設定された時点
5)MAC-CE及び/又はDCIにより通知された時点
2)DCIフォーマット0_1
3)DCIフォーマット0_2
4)その他のDCIフォーマット、例えば複数セルにわたり複数のPUSCHをスケジューリングするDCIフォーマット
2)ULをスケジューリングしないDCIフォーマットに含まれる通知に基づいて所定のUL送信向け波形を切り替える。上記動作2)を有効化する。
3)ULをスケジューリングしないDCIフォーマットに含まれる通知に基づいて所定の期間波形を切り替える。上記動作3)を有効化する。
4)動的波形切り替え通知を含むULをスケジューリングしないDCIに対してフィードバックを報告する。上記動作4)を有効化する。
5)上記動作5)を有効化する。
6)上記動作6)を有効化する。
7)上記動作7)を有効化する。
2)ULをスケジューリングしないDCIフォーマットに含まれる通知に基づいて所定のUL送信向け波形を切り替える動作をサポートするか否かを示す能力。上記動作2)をサポートするか否かを示す能力。
3)ULをスケジューリングしないDCIフォーマットに含まれる通知に基づいて所定の期間波形を切り替える動作をサポートするか否かを示す能力。上記動作3)をサポートするか否かを示す能力。
4)動的波形切り替え通知を含むULをスケジューリングしないDCIに対してフィードバックを報告する動作をサポートするか否かを示す能力。上記動作4)をサポートするか否かを示す能力。
5)上記動作5)をサポートするか否かを示す能力。
6)上記動作6)をサポートするか否かを示す能力。
7)上記動作7)をサポートするか否かを示す能力。
次に、これまでに説明した処理及び動作を実行する基地局10及び端末20の機能構成例を説明する。基地局10及び端末20は上述した実施例を実施する機能を含む。ただし、基地局10及び端末20はそれぞれ、実施例の中の一部の機能のみを備えることとしてもよい。
図8は、本発明の実施の形態における基地局10の機能構成の一例を示す図である。図8に示されるように、基地局10は、送信部110と、受信部120と、設定部130と、制御部140とを有する。図8に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。送信部110及び受信部120を通信部と呼んでもよい。
図9は、本発明の実施の形態における端末20の機能構成の一例を示す図である。図9に示されるように、端末20は、送信部210と、受信部220と、設定部230と、制御部240とを有する。図9に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。送信部210及び受信部220を通信部と呼んでもよい。
上記実施形態の説明に用いたブロック図(図8及び図9)は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及びソフトウェアの少なくとも一方の任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的又は論理的に分離した2つ以上の装置を直接的又は間接的に(例えば、有線、無線などを用いて)接続し、これら複数の装置を用いて実現されてもよい。機能ブロックは、上記1つの装置又は上記複数の装置にソフトウェアを組み合わせて実現されてもよい。
以上、説明したように、本発明の実施の形態によれば、CG(Configured grant)-PUSCH(Physical Uplink Shared Channel)を有効化する下り制御情報を基地局から受信する受信部と、前記下り制御情報に基づいて、上り送信に適用する波形を動的に切り替える制御部と、前記CG-PUSCHを前記基地局に前記波形を適用して送信する送信部とを有する端末が提供される。
以上、本発明の実施の形態を説明してきたが、開示される発明はそのような実施形態に限定されず、当業者は様々な変形例、修正例、代替例、置換例等を理解するであろう。発明の理解を促すため具体的な数値例を用いて説明がなされたが、特に断りのない限り、それらの数値は単なる一例に過ぎず適切な如何なる値が使用されてもよい。上記の説明における項目の区分けは本発明に本質的ではなく、2以上の項目に記載された事項が必要に応じて組み合わせて使用されてよいし、ある項目に記載された事項が、別の項目に記載された事項に(矛盾しない限り)適用されてよい。機能ブロック図における機能部又は処理部の境界は必ずしも物理的な部品の境界に対応するとは限らない。複数の機能部の動作が物理的には1つの部品で行われてもよいし、あるいは1つの機能部の動作が物理的には複数の部品により行われてもよい。実施の形態で述べた処理手順については、矛盾の無い限り処理の順序を入れ替えてもよい。処理説明の便宜上、基地局10及び端末20は機能的なブロック図を用いて説明されたが、そのような装置はハードウェアで、ソフトウェアで又はそれらの組み合わせで実現されてもよい。本発明の実施の形態に従って基地局10が有するプロセッサにより動作するソフトウェア及び本発明の実施の形態に従って端末20が有するプロセッサにより動作するソフトウェアはそれぞれ、ランダムアクセスメモリ(RAM)、フラッシュメモリ、読み取り専用メモリ(ROM)、EPROM、EEPROM、レジスタ、ハードディスク(HDD)、リムーバブルディスク、CD-ROM、データベース、サーバその他の適切な如何なる記憶媒体に保存されてもよい。
110 送信部
120 受信部
130 設定部
140 制御部
20 端末
210 送信部
220 受信部
230 設定部
240 制御部
1001 プロセッサ
1002 記憶装置
1003 補助記憶装置
1004 通信装置
1005 入力装置
1006 出力装置
2001 車両
2002 駆動部
2003 操舵部
2004 アクセルペダル
2005 ブレーキペダル
2006 シフトレバー
2007 前輪
2008 後輪
2009 車軸
2010 電子制御部
2012 情報サービス部
2013 通信モジュール
2021 電流センサ
2022 回転数センサ
2023 空気圧センサ
2024 車速センサ
2025 加速度センサ
2026 ブレーキペダルセンサ
2027 シフトレバーセンサ
2028 物体検出センサ
2029 アクセルペダルセンサ
2030 運転支援システム部
2031 マイクロプロセッサ
2032 メモリ(ROM,RAM)
2033 通信ポート(IOポート)
Claims (6)
- CG(Configured grant)-PUSCH(Physical Uplink Shared Channel)を有効化する下り制御情報を基地局から受信する受信部と、
前記下り制御情報に基づいて、上り送信に適用する波形を動的に切り替える制御部と、
前記CG-PUSCHを前記基地局に前記波形を適用して送信する送信部とを有する端末。 - 前記制御部は、前記下り制御情報のフォーマットに基づいて、上り送信に適用する波形を切り替えるか否かを決定する請求項1記載の端末。
- 前記制御部は、前記下り制御情報が送信されるサーチスペースの種別又は前記下り制御情報のサイズに基づいて、DWS(Dynamic waveform switching)がサポートされるか否かを決定する請求項1記載の端末。
- 前記制御部は、前記下り制御情報に含まれるMCS(Modulation and coding scheme)値が閾値よりも小さい場合、前記上り送信に適用する波形を切り替える請求項1記載の端末。
- 前記受信部は、DG(Dynamic grant)-PUSCHをスケジューリングする下り制御情報を基地局から受信し、
前記制御部は、前記DG-PUSCHをスケジューリングする下り制御情報に基づいて、上り送信に適用する波形を動的に切り替える請求項1記載の端末。 - CG(Configured grant)-PUSCH(Physical Uplink Shared Channel)を有効化する下り制御情報を基地局から受信する手順と、
前記下り制御情報に基づいて、上り送信に適用する波形を動的に切り替える手順と、
前記CG-PUSCHを前記基地局に前記波形を適用して送信する手順とを端末が実行する通信方法。
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Non-Patent Citations (4)
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| MARCO MASO, NOKIA, NOKIA SHANGHAI BELL: "Dynamic switching between DFT-s-OFDM and CP-OFDM", 3GPP DRAFT; R1-2211597; TYPE DISCUSSION; NR_COV_ENH2-CORE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. 3GPP RAN 1, no. Toulouse, FR; 20221114 - 20221118, 7 November 2022 (2022-11-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052222161 * |
| MARTIN BEALE, SONY: "Further considerations on dynamic waveform switching for the UE UL", 3GPP DRAFT; R1-2300896; TYPE DISCUSSION; NR_COV_ENH2-CORE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. 3GPP RAN 1, no. Athens, GR; 20230227 - 20230303, 17 February 2023 (2023-02-17), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052248039 * |
| PAUL MARINIER, INTERDIGITAL, INC.: "Dynamic switching between DFT-S-OFDM and CP-OFDM", 3GPP DRAFT; R1-2211324; TYPE DISCUSSION; NR_COV_ENH2-CORE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. 3GPP RAN 1, no. Toulouse, FR; 20221114 - 20221118, 7 November 2022 (2022-11-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052221888 * |
| SEUNGHEE HAN, INTEL CORPORATION: "Dynamic switching between DFT-S-OFDM and CP-OFDM waveform", 3GPP DRAFT; R1-2300974; TYPE DISCUSSION; NR_COV_ENH2-CORE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. 3GPP RAN 1, no. Athens, GR; 20230227 - 20230303, 17 February 2023 (2023-02-17), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052248117 * |
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