WO2022153463A1 - 基地局及び通信方法 - Google Patents
基地局及び通信方法 Download PDFInfo
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- WO2022153463A1 WO2022153463A1 PCT/JP2021/001123 JP2021001123W WO2022153463A1 WO 2022153463 A1 WO2022153463 A1 WO 2022153463A1 JP 2021001123 W JP2021001123 W JP 2021001123W WO 2022153463 A1 WO2022153463 A1 WO 2022153463A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0808—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
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- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
Definitions
- the present invention relates to terminals, base stations and communication methods in wireless communication systems.
- Non-Patent Document 1 NR (New Radio) (also called “5G”), which is the successor system to LTE (Long Term Evolution), the requirements are a large-capacity system, high-speed data transmission speed, low delay, and simultaneous operation of many terminals. Techniques that satisfy connection, low cost, power saving, etc. are being studied (for example, Non-Patent Document 1).
- Non-Patent Document 2 For example, in the frequency band from 52.6 GHz to 71 GHz, applicable numerology including subcarrier spacing, channel bandwidth, etc., physical layer design, possible obstacles in actual wireless communication, and the like are being studied.
- LBT Listen before talk
- the present invention has been made in view of the above points, and in a wireless communication system, scheduling can be performed according to a communication method.
- the LBT of the receiving unit that receives the downlink control channel and the plurality of scheduled downlink shared channels and the slot in which the plurality of downlink shared channels are scheduled when the downlink shared channel is received.
- a terminal is provided that has a slot that requires (Listen before talk) or a slot in which the monitoring cycle of the downlink control channel can be one or more slots, and the downlink shared channel has a control unit that assumes a plurality of start positions in the time domain.
- scheduling can be performed according to the communication method in the wireless communication system.
- LTE Long Term Evolution
- LTE-Advanced LTE-Advanced and later methods (eg, NR) unless otherwise specified.
- SS Synchronization signal
- PSS Primary SS
- SSS Secondary SS
- PBCH Physical broadcast channel
- PRACH Physical
- 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 and the like. However, even if it is a signal used for NR, it is not always specified as "NR-".
- the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other system (for example, Flexible Duplex, etc.). Method may be used.
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- Method may be used.
- "configuring" the radio parameter or the like may mean that a predetermined value is set in advance (Pre-configure), or the base station 10 or The radio parameter notified from the terminal 20 may be set.
- FIG. 1 is a diagram showing a configuration example of a wireless communication system according to the 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.
- FIG. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality 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 the radio signal are defined in the time domain and the frequency domain, the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain is defined by the number of subcarriers or the number of resource blocks. May be good.
- the base station 10 transmits a synchronization signal and system information to the terminal 20. Synchronous signals are, for example, NR-PSS and NR-SSS.
- the system information is transmitted by, for example, NR-PBCH, and is also referred to as broadcast information.
- the synchronization signal and system information may be referred to as SSB (SS / PBCH block).
- the base station 10 transmits a control signal or data to the terminal 20 by DL (Downlink), and receives the control signal or data from the terminal 20 by UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. Further, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Further, 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) by CA (Carrier Aggregation). Further, the terminal 20 may perform communication via a primary cell of the base station 10 by DC (Dual Connectivity) and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10.
- DC Dual Connectivity
- PSCell Primary SCG Cell
- the terminal 20 is a communication device having a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives a control signal or data from the base station 10 on the DL and transmits the control signal or data to the base station 10 on the UL, thereby providing various types provided by the wireless communication system. Use communication services. Further, the terminal 20 receives various reference signals transmitted from the base station 10 and executes the measurement of the propagation path quality based on the reception result of the reference signals.
- M2M Machine-to-Machine
- FIG. 2 is a diagram showing an example of a frequency range according to the embodiment of the present invention.
- FR Frequency range 1 whose current operation is regulated is a frequency band from 410 MHz to 7.125 GHz, and SCS (Sub carrier spacing) is 15, 30 or 60 kHz.
- the bandwidth is from 5 MHz to 100 MHz.
- FR2 is a frequency band from 24.25 GHz to 52.6 GHz, SCS uses 60, 120 or 240 kHz and the bandwidth is 50 MHz to 400 MHz.
- the newly operated frequency band may be assumed to be from 52.6 GHz to 71 GHz. Further, it may be assumed that the frequency band exceeding 71 GHz is supported.
- the waveform in the newly operated frequency band is, for example, CP-OFDM (Cyclic Prefix Orthogonal Frequency Division Multiplexing) / DFT-S-OFDM (Discrete Fourier Transform) to which a larger SCS is applied.
- CP-OFDM Cyclic Prefix Orthogonal Frequency Division Multiplexing
- DFT-S-OFDM Discrete Fourier Transform
- the symbol length is 66.6 microseconds.
- the symbol length is 33.3 microseconds.
- the symbol length is 16.65 microseconds.
- the symbol length is 8.325 microseconds.
- the symbol length is 4.1625 microseconds.
- the symbol length is 2.08125 microseconds.
- the symbol length is 1.040625 microseconds.
- FIG. 3 is a diagram for explaining an example of LBT (Listen before talk).
- LBT Listen before talk
- the CCA (Clear Channel Assessment) procedure is defined as a channel detection period of 8 microseconds + 5 microseconds x random counter, as shown in FIG. ..
- the random counter in which the channel busy was detected in the first LBT is started from the state of 2
- a DCI (Downlink Control Information) format for appropriately scheduling a plurality of PDSCHs or a plurality of PUSCHs is proposed.
- a TDRA Time domain resource allocation
- PDSCH may be replaced with "PUSCH”
- PUSCH may be replaced with "PDSCH”.
- FIG. 4 is a flowchart for explaining an example of a receiving operation according to the embodiment of the present invention.
- the terminal 20 receives the DCI.
- the terminal 20 receives a plurality of PDSCHs based on DCI or transmits a plurality of PUSCHs based on DCI.
- DCI may schedule a plurality of PUSCH transmissions in consecutive slots.
- the DCI may also notify the first slot or the TDRA field in each slot.
- the TDRA may correspond to a plurality of sets of mapping types and SLIVs (Start and Length Indicator Values) that enable a plurality of start positions or a plurality of mini slots in one slot.
- TDRA may schedule a plurality of PDSCHs or a plurality of PUSCHs in a plurality of discontinuous or continuous slots.
- one TDRA field may notify a plurality of start positions or a plurality of minislots without changing the TDRA table.
- a plurality of mini-slot-based or slot-based PDSCHs or a plurality of PUSCHs may be scheduled.
- the DCI format may be an extension of the existing UE-specific DCI format. For example, some or all of DCI format 1_1, DCI format 1-11, and DCI format 1-22 may be used for scheduling multiple PDSCHs. For example, some or all of DCI format 0_0, DCI format 0_1, and DCI format 0_2 may be used for scheduling multiple PUSCHs.
- the DCI format a new format for executing the scheduling of a plurality of PDSCHs and / or the scheduling of a plurality of PUSCHs may be used.
- the DCI may include a field for PDSCH and a field for PUSCH.
- the DCI may include a field common to both the PDSCH field and the PUSCH field.
- a field for a certain PUSCH may indicate that PUSCH is not scheduled. For example, when all FDRAs (Frequency domain resource allocation) for PUSCH are "0", it may indicate that PUSCH is not scheduled. Also, if only the PUSCH is scheduled, some fields for the PDSCH may indicate that the PDSCH is not scheduled. For example, if all FDRAs for PDSCH are "0", it may indicate that PUSCH is not scheduled.
- the DCI may schedule channels in multiple slots with a single TDRA index.
- One TDRA index may correspond to one mapping type and one SLIV per entry in the TDRA table.
- one TDRA index corresponding to one SLIV the extension of the TDRA table becomes unnecessary. In addition, discontinuous scheduling becomes possible.
- SLIV may notify a plurality of start positions in each scheduled slot.
- FIG. 5 is a diagram for explaining an example (1) of scheduling in the embodiment of the present invention.
- the "S" indicates the first possible starting position within the slot of interest.
- the next possible start position is "S + L”. That is, the operation of delaying the start position by L is repeated until the LBT is successful.
- the start position of PDSCH may be defined by a period obtained by adding an integral multiple of L to S.
- a slot that does not require LBT may have a start position of "S”. As shown in FIG. 5, a plurality of start positions can be specified based on one SLIV in each scheduled slot.
- FIG. 6 is a diagram for explaining an example (2) of scheduling according to the embodiment of the present invention.
- S in a slot other than the scheduled first slot and the slot that requires LBT for energy detection before transmission of the first symbol, “S” is in the target slot.
- the slots other than the first slot that require LBT to detect power before transmitting the first symbol may be slots that are scheduled later in the time domain due to discontinuous slot scheduling.
- the start position of the PDSCH may be changed according to the length of the monitoring cycle. For example, when the terminal 20 fails in PDCCH monitoring at the start position “S”, the next possible start position is set to “S + L”. That is, the terminal 20 may repeat the operation of delaying the start position by L until the PDCCH monitoring is successful.
- SLIV may be ignored and the first symbol in the target slot may be used as the start symbol for PDSCH / PUSCH in the target slot, where L is 13.
- PDSCH / PUSCH may be scheduled for all available symbols in the target slot, which are symbols or 14 symbols. Note that PDSCH / PUSCH may mean PDSCH or PUSCH, or may mean PDSCH and PUSCH.
- FIG. 7 is a diagram for explaining an example (3) of scheduling in the embodiment of the present invention.
- the scheduled first slot since the LBT was successfully executed in the 8us window and the three 5us windows, among the start positions in which a plurality of transmissions were set, immediately after the time when the LBT was successful. Transmission may be started from the start position.
- the slot requiring LBT since LBT was successfully executed in the 8us window and the two 5us windows, the time when the LBT was successful among the start positions in which multiple transmissions were set. Transmission may be started from the start position immediately after.
- FIG. 8 is a diagram for explaining an example (4) of scheduling in the embodiment of the present invention.
- transmission is not performed because the LBT has detected busyness.
- the transmission was started from the start position "S + 2L" immediately after the time when the LBT was successful, out of the start positions in which a plurality of transmissions were set. You may.
- the start position "S + L" immediately after the time when the LBT is successful among the start positions in which a plurality of transmissions are set is set. You may start the transmission from.
- the DCI may notify one TDRA index and schedule channels in a plurality of slots.
- One TDRA index may correspond to one mapping type and one SLIV per entry in the TDRA table.
- FIG. 9 is a diagram for explaining an example (5) of scheduling according to the embodiment of the present invention.
- the TDRA for PDSCH / PUSCH scheduled to multiple minislots is determined by the notified SLIV, which SLIV is continuously repeated in that slot. May be applied.
- S n ′ is the start position of the PDSCH / PUSCH scheduled in the nth minislot
- L n ′ is the length of the PDSCH / PUSCH scheduled in the nth minislot.
- the symbols before the slot boundary of PDSCH / PUSCH scheduled for the last minislot are dropped. May be good.
- FIG. 9 shows an example in which when the last TDRA crosses the slot boundary, it is connected to the immediately preceding TDRA, and when the LBT is successful, transmission is started.
- the scheduling method shown in FIG. 9 reduces the influence on the TDRA table and enables discontinuous scheduling.
- FIG. 10 is a diagram for explaining an example (6) of scheduling in the embodiment of the present invention.
- the SLIV may notify a plurality of start positions for the first slot and the slot in which the LBT is required.
- the TDRA corresponding to PDSCH / PUSCH of a plurality of mini slots is notified SLIV described in FIG. It may be determined based on.
- the PDSCH may be transparently displayed from the S by SLIV, and the subsequent PDSCH may be scheduled with S after the slot boundary set to 0.
- the scheduling method shown in FIG. 10 reduces the effect on the TDRA table, reduces the DCI payload size, and enables discontinuous scheduling.
- whether to execute slot-based scheduling or mini-slot-based scheduling may be determined by any of the following 1) -3).
- the information elements contained in PDSCH-Config or PUSCH-Config may inform that only slot bases are supported, only mini slot bases may be supported, or slots. You may be notified that both base and minislot bases are supported.
- One bit contained in the scheduling DCI may notify that only slot-based is supported, only mini-slot-based may be supported, or may be included in the scheduling DCI. Bits may inform you that both slot-based and mini-slot-based are supported.
- whether to execute continuous slot scheduling or non-continuous slot scheduling may be determined by any of the following 1) -3).
- the RRC setting may set whether to apply continuous or discontinuous slots to a plurality of PDSCH / PUSCH schedulings.
- DCI Downlink Control
- one bit contained in the DCI to be scheduled may notify a plurality of PDSCH / PUSCH scheduling whether continuous or non-continuous slots are applied.
- It may be defined by specifications. For example, it may be predefined whether continuous or non-continuous slots are applied to a plurality of PDSCH / PUSCH schedulings.
- slot patterns may be mapped based on sequences or iterations.
- the N1 slot may be scheduled, then the N2 slot may not be scheduled, then the N1 slot may be scheduled, then the N2 slot may not be scheduled, and so on until the number of scheduled slots is reached.
- N1 and N2 may be set by RRC, or DCI may notify which value is used from the set of values defined by the specification or RRC.
- the DCI may notify an index indicating either a set of bitmaps defined by the specification or set by the RRC.
- the bitfield length of the index may be determined based on the set size.
- the DCI may also directly notify the bitmap.
- the size of the field notifying the bitmap may be determined by the maximum number of slots scheduled.
- a possible scheduling slot pattern may be determined based on the TDD pattern. For example, in a TDD pattern, slots containing D symbols, or D and F symbols, may be skipped when scheduling multiple PUSCHs. Also, for example, in the TDD pattern, the U symbol, or the slot containing the U and F symbols, may be skipped when scheduling multiple PDSCHs.
- the DCI may also notify a single TDRA index that includes a plurality of sets of mapping types and SLIVs.
- the plurality of SLIVs may correspond to a range of a plurality of contiguous slots or a plurality of discontinuous slots.
- Multiple SLIVs may correspond to a range of continuous or discontinuous slots. Whether the scheduling is continuous or discontinuous may be determined based on the multiple SLIV values notified. Discontinuous scheduling may be realized by setting the TDRA table.
- the value of N1 and the value of N2 may be separated and encoded in different columns of the TDRA table. 2) The value of N1 and the value of N2 may be joint-encoded in one column of the TDRA table (like SLIV). 3) The value of N1 may be encoded in one column of the TDRA table, and the value of N2 may be determined by the RRC setting or notified by the scheduling DCI. 4) The value of N2 may be encoded in one column of the TDRA table, and the value of N1 may be determined by the RRC setting or notified by the scheduling DCI. 5) The value of N1 and the value of N2 may be determined by the RRC setting or notified by the scheduling DCI.
- Table 2 shown below shows an example of the TDRA table to which the above 1) is applied.
- FIG. 11 is a diagram for explaining an example (7) of scheduling in the embodiment of the present invention.
- FIG. 11 is a scheduling example corresponding to index # 1 in Table 2.
- SLIV schedules three PDSCHs with a start position # 0 and a length of 14, and since N1 is 2, the next two slots are scheduled, because N2 is 3.
- the set of 3 slots for which PDSCH is scheduled and 2 slots for which PDSCH is not scheduled is repeated 3 times.
- the scheduling pattern may be defined by specifications, set by RRC, notified by DCI, or applied as shown in 1) or 2) below.
- the scheduling pattern may be applied only once. 2) The number of times the scheduling pattern is repeated (for example, N2) may be notified.
- Table 3 shown below shows an example of the TDRA table to which the above 2) is applied.
- FIG. 12 is a diagram for explaining an example (8) of scheduling in the embodiment of the present invention.
- FIG. 12 is a scheduling example corresponding to index # 1 in Table 3. As shown in FIG. 12, this is an example in which five PDSCHs having a start position # 0 and a length of 14 are scheduled by SLIV, and “10101” is notified as a scheduling pattern to the five slots.
- the number of repetitions N2 is set to 3. N2 may be encoded in the TDRA table.
- the PDSCH-scheduled slot, the PDSCH-unscheduled slot, the PDSCH-scheduled slot, the PDSCH-unscheduled slot, and the PDSCH-scheduled slot are three times. Repeated.
- the DCI field common to a plurality of or a single PDSCH / PUSCH scheduling may be defined as follows.
- MCS / NDI / RV may be notified in common for scheduling. For example, one MCS / NDI / RV field may be applied in common to all PDSCH / PUSCH scheduling.
- the description of MCS / NDI / RV may be replaced with MCS, NDI or RV, may be replaced with any combination, or may be replaced with MCS, NDI and RV.
- MCS / NDI / RV may be notified in a field separated for each scheduling.
- the number of MCS / NDI / RV fields may be equal to the maximum number of PDSCH / PUSCHs that can be scheduled. Alternatively, it may be notified by bits separated for each scheduling in one field.
- the field length of MCS / NDI / RV may be N times the field length used for one scheduling of PDSCH / PUSCH. N may be equal to the maximum number of PDSCH / PUSCHs that can be scheduled.
- the number of notification bits used for one PDSCH / PUSCH scheduling may be less than or equal to the MCS / NDI / RV field length according to the prior art.
- the same MCS table may be applied, or different MCS tables may be applied.
- the bits contained in the other fields of DCI that schedule the PDSCH / PUSCH may notify which MCS table is applied. If the bit is 1, a low SE (Spectral efficiency) MCS table may be applied to the scheduled PDSCH / PUSCH, and if the bit is not 1, another configured MCS table is used. May be good.
- the other field may be an existing DCI field, for example, a field indicating priority when a separate notification is adopted.
- the other fields may be new DCI fields, and may have a field length equal to, for example, the maximum number of PDSCH / PUSCHs that can be scheduled.
- maxNrovCodedsScheduledByDCI When scheduling multiple PDSCHs, if maxNrovCodedsScheduledByDCI is 2, only one transport block (TB) may be allowed for each PDSCH. For example, if a separate notification is adopted, only the field corresponding to TB1 needs to be expanded. Further, when maxNrovCodedsScheduledByDCI is 2, two TBs may be allowed for each PDSCH as in the case of a single PDSCH. For example, if separate notifications are adopted, the fields corresponding to TB1 and TB2 need to be expanded.
- FDRA may be notified in common with scheduling. For example, one FDRA field may be applied in common to all PDSCH / PUSCH scheduling. In addition, FDRA may be notified in a field separated for each scheduling.
- the number of fields in FDRA may be equal to the maximum number of PDSCH / PUSCH schedules that can be scheduled. Alternatively, it may be notified by bits separated for each scheduling in one field.
- the field length of FDRA may be N times the field length used for one PDSCH / PUSCH scheduling. N may be equal to the maximum number of PDSCH / PUSCHs that can be scheduled.
- the number of notification bits used for one PDSCH / PUSCH scheduling may be less than or equal to the FDRA field length according to the prior art.
- the priority indicator may be notified in common with or separately for each PDSCH / PUSCH scheduling.
- the HPN field may notify the HARQ process ID corresponding to the first PDSCH / PUSCH, and the subsequent PDSCH / PUSCH may increase the HAQ process ID by one.
- HPN may be notified in a field separated for each scheduling.
- the number of HPN fields may be equal to the maximum number of PDSCH / PUSCHs that can be scheduled. Alternatively, it may be notified by bits separated for each scheduling in one field.
- the HPN field length may be N times the field length used for one PDSCH / PUSCH scheduling. N may be equal to the maximum number of PDSCH / PUSCHs that can be scheduled.
- the number of notification bits used for one PDSCH / PUSCH scheduling may be less than or equal to the HPN field length according to the prior art.
- CBG-based transmission may not be assumed. That is, in the case of a plurality of PDSCH / PUSCH transmissions, the corresponding field may be 0 bits. Further, each TB of the scheduled PDSCH / PUSCH may be notified separately. For example, the bit length of the field or the number of fields may be determined based on the maximum number of PDSCH / PUSCH that can be scheduled. good.
- TCI Transmission Configuration Indication
- SRI SRS-ResourceIndex
- TCI / SRI SRS-ResourceIndex
- TCI / SRI may be notified in separate fields for each scheduling.
- the number of TCI / SRI fields may be equal to the maximum number of PDSCH / PUSCHs that can be scheduled. Alternatively, it may be notified by bits separated for each scheduling in one field.
- the field length of TCI / SRI may be N times the field length used for one scheduling of PDSCH / PUSCH.
- N may be equal to the maximum number of PDSCH / PUSCHs that can be scheduled.
- the number of notification bits used for one PDSCH / PUSCH scheduling may be less than or equal to the TCI / SRI field length according to the prior art.
- the number of bits in the TCI / SRI field may be aligned with the number of beams contained in a subset.
- the subset may correspond to an available beam in an unlicensed band operated COT (Channel occupation time).
- TCI / SRI may mean TCI and SRI, or may mean TCI or SRI.
- TCI / SRIs are notified and scheduled PDSCH and TCI / SRI may be mapped as follows.
- it may be mapped by slot-based repetition. For example, two TCI states may be notified, the first TCI may be applied to the first slot, the second TCI to the subsequent slots, and so on in subsequent slots. It may also be mapped by PDSCH / PUSCH-based iteration. For example, two TCI states may be notified, the first TCI may be applied to the first PDSCH, the second TCI may be applied to the subsequent PDSCH, and so on in subsequent PDSCHs.
- the TCI state is associated with which slot the PDSCH is scheduled for, and the association between the slot and the TCI state may be set by the RRC.
- the TCI state may be associated with the index of the PDSCH of interest in all scheduled PDSCHs, and the association of the PDSCH index with the TCI state may be set by the RRC.
- two TCI states are notified, the first PDSCH is associated with the first TCI state, the subsequent PDSCH is associated with the second TCI state, and the subsequent PDSCHs are associated with the TCI state as well. May be good.
- the number of TCI / SRI states may be defined in the specification or set by RRC.
- TPMI Transmitted Precoding Matrix Indicator
- RI Rank Indicator
- the notification method of TPMI and RI may depend on the notification method of SRI. For example, if SRIs for all scheduled PDSCHs are commonly notified, common or separate TPMI and RI notifications may be possible. For example, when SRI is notified separately to each scheduled PDSCH, notification of separated TPMI and RI may be possible. When multiple SRI states are mapped to a scheduled PDSCH, the TPMI and RI corresponding to each SRI state may be notified.
- the TPC (Transmit Power Control) command field related to a plurality of PUSCH schedulings which of the above SRI notification methods should be used may be determined independently of the SRI. Further, the notification method of the TPC command may depend on the notification method of SRI. For example, if SRI for all scheduled PDSCHs is notified in common, notification of common or separate TPC commands may be possible. For example, when SRI is notified separately to each scheduled PDSCH, notification of the separated TPC command may be possible. When a plurality of SRI states are mapped to a scheduled PDSCH, the TPC command corresponding to each SRI state may be notified.
- the operation may be performed as follows.
- one TPC command may be notified to each PUSCH in common, and the TPC command may be applied to the first PUSCH only once. Further, the TPC command may be separately notified to each PUSCH, and the TPC command may be applied to each PUSCH. For example, when the power adjustment is not performed between the two PUSCHs, the latter PUSCH may be notified of the TPC command value 0. Further, when the mapping of a plurality of TPC commands is notified, in each set of PUSCHs in the same power control state, the corresponding TPC command value may be applied only to the first PUSCH in the set.
- the notified TPC command value may be applied to each corresponding PUSCH.
- Which operation of the above-described embodiment can be executed may be set by the upper layer parameter, may be reported by the terminal 20 as the UE capability, or may be defined in the specifications. , It may be determined by the setting of the upper layer parameter and the UE capability.
- a UE capability may be defined that indicates whether the terminal 20 supports multiple PDSCH or multiple PUSCH schedulings based on a single DCI in the existing UE-specific DCI format.
- a UE capability may be defined to indicate whether the terminal 20 supports single DCI-based multiple PDSCH or multiple PUSCH scheduling in a new UE-specific DCI format.
- the base station 10 can efficiently schedule a plurality of PDSCHs / PUSCHs assuming LBT.
- scheduling can be performed according to the communication method.
- the base station 10 and the terminal 20 include a function of carrying out the above-described embodiment.
- the base station 10 and the terminal 20 may each have only a part of the functions in the embodiment.
- FIG. 13 is a diagram showing an example of the functional configuration of the base station 10 according to the embodiment of the present invention.
- 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. 13 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.
- the transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly. Further, the transmission unit 110 transmits a message between network nodes to another network node.
- the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring 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 signal and the like to the terminal 20. In addition, the receiving unit 120 receives a message between network nodes from another network node.
- the setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20.
- the content of the setting information is, for example, information related to the measurement setting.
- the control unit 140 controls the measurement settings as described in the embodiment. In addition, the control unit 140 executes scheduling.
- the function unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the function unit related to signal reception in the control unit 140 may be included in the reception unit 120.
- FIG. 14 is a diagram showing an example of the functional configuration of the terminal 20 according to 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. 14 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.
- the transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
- the receiving unit 220 wirelessly receives various signals and acquires a signal of a higher layer from the received signal of the physical layer. Further, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals and the like transmitted from the base station 10. Further, for example, the transmission unit 210 connects the other terminal 20 to PSCCH (Physical Sidelink Control Channel), PSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) as D2D communication. Etc., and the receiving unit 220 receives PSCCH, PSCH, PSDCH, PSBCH, etc. from the other terminal 20.
- PSCCH Physical Sidelink Control Channel
- PSCH 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 preset setting information.
- the content of the setting information is, for example, information related to the measurement setting.
- the control unit 240 controls the measurement settings as described in the embodiment.
- the function unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the function unit related to signal reception in the control unit 240 may be included in the reception unit 220.
- each functional block may be realized by using one device that is physically or logically connected, or directly or indirectly (for example, by two or more devices that are physically or logically separated). , Wired, wireless, etc.) and may be realized using these plurality of devices.
- the functional block may be realized by combining the software with the one device or the plurality of devices.
- Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption. Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but limited to these I can't.
- a functional block (component) that functions transmission is called a transmitting unit or a transmitter.
- the method of realizing each of them is not particularly limited.
- the base station 10, the terminal 20, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure.
- FIG. 15 is a diagram showing an example of the hardware configuration of the base station 10 and the terminal 20 according to the embodiment of the present disclosure.
- the above-mentioned base station 10 and terminal 20 are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. May be good.
- the word “device” can be read 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 not to include some of the devices.
- the processor 1001 For each function of the base station 10 and the terminal 20, the processor 1001 performs an operation by loading predetermined software (program) on the hardware such as the processor 1001 and the storage device 1002, and controls the communication by the communication device 1004. It is realized by controlling at least one of reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
- Processor 1001 operates, for example, an operating system to control the entire computer.
- the processor 1001 may be composed of a central processing unit (CPU: Central Processing Unit) including an interface with peripheral devices, a control device, an arithmetic unit, a register, and the like.
- CPU Central Processing Unit
- the control unit 140, the control unit 240, and the like described above may be realized by the processor 1001.
- the processor 1001 reads a program (program code), a software module, data, or the like 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.
- a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
- the control unit 140 of the base station 10 shown in FIG. 13 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
- the control unit 240 of the terminal 20 shown in FIG. 14 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
- Processor 1001 may be implemented by one or more chips.
- the program may be transmitted from the network via a telecommunication line.
- the storage device 1002 is a computer-readable recording medium, for example, by at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), and the like. It may be configured.
- the storage device 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
- the storage device 1002 can store a program (program code), a software module, or the like that can be executed to implement the communication method according to the embodiment of the present disclosure.
- the auxiliary storage device 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, Blu).
- -It may be composed of at least one of a 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, and the like.
- the storage medium described above may be, for example, a database, server or other suitable medium containing at least one of the storage device 1002 and the auxiliary storage device 1003.
- the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
- the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). It may be composed of.
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- the transmission / reception unit may be physically or logically separated from each other in the transmission unit and the reception unit.
- the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside.
- the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside.
- the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- 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 by using a single bus, or may be configured by using a different bus for each device.
- the base station 10 and the terminal 20 are hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured to include, and a part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardware.
- DSP Digital Signal Processor
- ASIC Application Specific Integrated Circuit
- PLD Programmable Logic Device
- FPGA Field Programmable Gate Array
- the receiving unit that receives the plurality of downlink shared channels scheduled for downlink and the plurality of downlink shared channels when receiving the downlink shared channel. Is a slot that requires LBT (Listen before talk) or a slot in which the monitoring cycle of the downlink control channel can be one or more, and a plurality of start positions in the time domain are assumed for the downlink shared channel.
- a terminal having a control unit is provided.
- the base station 10 can efficiently schedule a plurality of PDSCHs / PUSCHs assuming LBT. That is, in the wireless communication system, scheduling can be performed according to the communication method.
- the control unit When the control unit receives the downlink shared channel, the control unit assumes a plurality of start positions of the downlink shared channel in the time domain at the first slot among the slots scheduled for the plurality of scheduled downlink shared channels. You may. With this configuration, the base station 10 can efficiently schedule a plurality of PDSCHs / PUSCHs assuming LBT.
- the plurality of start positions may be determined by adding an integral multiple of a certain length L to one start position S.
- the base station 10 can efficiently schedule a plurality of PDSCHs / PUSCHs assuming LBT.
- the downlink When the control unit receives the downlink shared channel, the downlink is in a slot other than the first slot and the slot requiring LBT among the slots scheduled for the plurality of scheduled downlink shared channels.
- the start position of the shared channel may be assumed to be the beginning of the slot. With this configuration, the base station 10 can efficiently schedule a plurality of PDSCHs / PUSCHs assuming LBT.
- a receiving unit that receives a downlink control channel, a transmitting unit that transmits a plurality of scheduled uplink shared channels, and a plurality of uplinks when transmitting the uplink shared channels.
- the slot that requires LBT (Listen before talk) or the slot in which the monitoring cycle of the downlink control channel can be one or more slots, and the uplink shared channel has a plurality of start positions in the time domain.
- a terminal having an assumed control unit is provided.
- the base station 10 can efficiently schedule a plurality of PDSCHs / PUSCHs assuming LBT. That is, in the wireless communication system, scheduling can be performed according to the communication method.
- a transmission unit that transmits a downlink control channel and a plurality of scheduled downlink shared channels, and a slot that schedules the plurality of downlink shared channels when transmitting the downlink shared channel.
- the station is provided.
- the base station 10 can efficiently schedule a plurality of PDSCHs / PUSCHs assuming LBT. That is, in the wireless communication system, scheduling can be performed according to the communication method.
- a reception procedure for receiving a downlink control channel and a plurality of scheduled downlink shared channels, and when receiving the downlink shared channel, the plurality of downlink shared channels are scheduled.
- a communication method executed by the terminal is provided.
- the base station 10 can efficiently schedule a plurality of PDSCHs / PUSCHs assuming LBT. That is, in the wireless communication system, scheduling can be performed according to the communication method.
- the operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components.
- the processing order may be changed as long as there is no contradiction.
- the base station 10 and the terminal 20 have been described with reference to functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof.
- the software operated by the processor of the base station 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention are random access memory (RAM), flash memory, and read-only memory, respectively. It may be stored in (ROM), EPROM, EPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
- information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. Broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof may be used.
- RRC signaling may be referred to as an RRC message, for example, RRC. It may be a connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.
- Each aspect / embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), and 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)) )), LTE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, and other systems that utilize suitable systems and have been extended based on these. It may be applied to at least one of the next generation systems. Further, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
- the specific operation performed by the base station 10 in the present specification may be performed by its upper node.
- various operations performed for communication with the terminal 20 are performed by the base station 10 and other network nodes other than the base station 10 (for example, it is clear that it can be done by at least one of (but not limited to, MME, S-GW, etc.).
- the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW). ..
- the information, signals, etc. described in the present disclosure can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.
- the input / output information and the like may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information and the like can be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.
- the determination in the present disclosure may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example,). , Comparison with a predetermined value).
- Software whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module.
- Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- a transmission medium For example, a website where the software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.).
- wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
- wireless technology infrared, microwave, etc.
- the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
- a channel and a symbol may be a signal (signaling).
- the signal may be a message.
- the component carrier CC: Component Carrier
- CC Component Carrier
- system and “network” used in this disclosure are used interchangeably.
- the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented.
- the radio resource may be one indicated by an index.
- base station Base Station
- wireless base station base station
- base station device fixed station
- NodeB nodeB
- eNodeB eNodeB
- GNB nodeB
- access point “ transmission point ”,“ reception point ”,“ transmission / reception point ”,“ cell ”,“ sector ”
- Terms such as “cell group,” “carrier,” and “component carrier” can be used interchangeably.
- Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
- the base station can accommodate one or more (for example, three) cells.
- a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH:)).
- Communication services can also be provided by Remote Radio Head).
- the term "cell” or “sector” refers to part or all of the coverage area of at least one of the base stations and base station subsystems that provide communication services in this coverage. Point to.
- MS Mobile Station
- UE User Equipment
- Mobile stations can be used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
- At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like. At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like.
- the moving body may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving body (for example, a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned type). ) May be.
- at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
- 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 by the user terminal.
- the communication between the base station and the user terminal is replaced with the communication between a plurality of terminals 20 (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.).
- D2D Device-to-Device
- V2X Vehicle-to-Everything
- Each aspect / embodiment of the present disclosure may be applied to the configuration.
- the terminal 20 may have the function of the base station 10 described above.
- words such as "up” and “down” may be read as words corresponding to communication between terminals (for example, "side”).
- the upstream channel, the downstream channel, and the like may be read as a side channel.
- the user terminal in the present disclosure may be read as a base station.
- the base station may have the functions of the user terminal described above.
- determining and “determining” used in this disclosure may include a wide variety of actions.
- “Judgment” and “decision” are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). (For example, searching in a table, database or another data structure), ascertaining may be regarded as “judgment” or “decision”.
- judgment and “decision” are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access.
- Accessing (for example, accessing data in memory) may be regarded as "judgment” or “decision”.
- judgment and “decision” mean that the things such as solving, selecting, choosing, establishing, and comparing are regarded as “judgment” and “decision”. Can include. That is, “judgment” and “decision” may include considering some action as “judgment” and “decision”. Further, “judgment (decision)” may be read as “assuming”, “expecting”, “considering” and the like.
- connection means any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two “connected” or “combined” elements.
- the connections or connections between the elements may be physical, logical, or a combination thereof.
- connection may be read as "access”.
- the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain. Can be considered to be “connected” or “coupled” to each other using electromagnetic energy having wavelengths in the microwave and light (both visible and invisible) regions.
- the reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot (Pilot) depending on the applicable standard.
- RS Reference Signal
- Pilot Pilot
- references to elements using designations such as “first” and “second” as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted, or that the first element must somehow precede the second element.
- each of the above devices may be replaced with a "part”, a “circuit”, a “device”, or the like.
- the wireless frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe. Subframes may further consist of one or more slots in the time domain.
- the subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
- the numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel.
- Numerology includes, for example, subcarrier interval (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, wireless frame configuration, transmitter / receiver.
- SCS SubCarrier Spacing
- TTI Transmission Time Interval
- At least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.
- the slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time region. Slots may be in time units based on New Melology.
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain.
- the mini-slot may also be referred to as a sub-slot.
- a minislot may consist of a smaller number of symbols than the slot.
- a PDSCH (or PUSCH) transmitted in a time unit larger than the minislot may be referred to as a PDSCH (or PUSCH) mapping type A.
- the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
- the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
- the radio frame, subframe, slot, minislot and symbol may have different names corresponding to each.
- one subframe may be called a transmission time interval (TTI), a plurality of consecutive subframes may be called TTI, and one slot or one minislot may be called TTI.
- TTI transmission time interval
- the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
- TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
- the base station schedules each terminal 20 to allocate radio resources (frequency bandwidth that can be used in each terminal 20, transmission power, etc.) in TTI units.
- the definition of TTI is not limited to this.
- the TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
- the time interval for example, the number of symbols
- the transport block, code block, code word, etc. may be shorter than the TTI.
- one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
- a TTI having a time length of 1 ms may be referred to as 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, or the like.
- TTIs shorter than normal TTIs may be referred to as shortened TTIs, short TTIs, partial TTIs (partial or fractional TTIs), shortened subframes, short subframes, minislots, subslots, slots, and the like.
- the long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and the short TTI (for example, shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.
- the resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
- the number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12.
- the number of subcarriers contained in the RB may be determined based on numerology.
- the time domain of RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
- Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
- One or more RBs include a physical resource block (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, and the like. May be called.
- PRB Physical resource block
- SCG Sub-Carrier Group
- REG Resource Element Group
- PRB pair an RB pair, and the like. May be called.
- the resource block may be composed of one or a plurality of resource elements (RE: Resource Element).
- RE Resource Element
- 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
- Bandwidth part (which may also be called partial bandwidth) may represent a subset of consecutive common resource blocks (RBs) for a certain neurology in a carrier.
- the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that 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 set in one carrier for the UE.
- At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP.
- “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
- the above-mentioned structures such as wireless frames, subframes, slots, mini slots and symbols are merely examples.
- the number of subframes contained in a wireless frame the number of slots per subframe or wireless frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB.
- the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and the like can be changed in various ways.
- the term "A and B are different” may mean “A and B are different from each other”.
- the term may mean that "A and B are different from C”.
- Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
- the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.
- the PDSCH in the present disclosure is an example of a downlink shared channel.
- PDCCH is an example of a downlink control channel.
- Base station 110 Transmission unit 120 Reception unit 130 Setting unit 140 Control unit 20 Terminal 210 Transmission unit 220 Reception unit 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device
Abstract
Description
この問題のため、例えば、より大きなSCS又はシングルキャリア波形を使用することが要求される。
この問題のため、例えば、より狭い(Narrower)ビーム及びより多くのビーム数が要求される。
この問題のため、例えば、より大きなSCS(すなわちより小さなFFTポイント数)、PAPRを低減するメカニズム、シングルキャリア波形が要求される。
2)N1の値及びN2の値は、TDRAテーブルの1列に(SLIVのように)ジョイントエンコーディングされてもよい。
3)N1の値はTDRAテーブルの1列ににエンコードされ、N2の値はRRC設定により決定されるか、スケジューリングするDCIによって通知されてもよい。
4)N2の値はTDRAテーブルの1列ににエンコードされ、N1の値はRRC設定により決定されるか、スケジューリングするDCIによって通知されてもよい。
5)N1の値及びN2の値はRRC設定により決定されるか、スケジューリングするDCIによって通知されてもよい。
2)スケジューリングパターンが繰り返される回数(例えばN2)が通知されてもよい。
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13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13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13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。
図14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14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14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。
上記実施形態の説明に用いたブロック図(図13及び図14)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、下り制御チャネルスケジューリングされた複数の下り共有チャネルを受信する受信部と、前記下り共有チャネルを受信するとき、前記複数の下り共有チャネルがスケジューリングされるスロットのうち、LBT(Listen before talk)が必要なスロット又は前記下り制御チャネルのモニタリング周期が1スロット以上となり得るスロットで、前記下り共有チャネルに時間領域における複数の開始位置を想定する制御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
Claims (7)
- 下り制御チャネル及びスケジューリングされた複数の下り共有チャネルを受信する受信部と、
前記下り共有チャネルを受信するとき、前記複数の下り共有チャネルがスケジューリングされるスロットのうち、LBT(Listen before talk)が必要なスロット又は前記下り制御チャネルのモニタリング周期が1スロット以上となり得るスロットで、前記下り共有チャネルに時間領域における複数の開始位置を想定する制御部とを有する端末。 - 前記制御部は、前記下り共有チャネルを受信するとき、スケジューリングされた前記複数の下り共有チャネルがスケジューリングされるスロットのうち、先頭のスロットで、時間領域における前記下り共有チャネルの複数の開始位置を想定する請求項1記載の端末。
- 前記複数の開始位置は、1つの開始位置Sに、ある長さLの整数倍を加えて定められる請求項1記載の端末。
- 前記制御部は、前記下り共有チャネルを受信するとき、スケジューリングされた前記複数の下り共有チャネルがスケジューリングされるスロットのうち、先頭のスロット及びLBTが必要なスロット以外のスロットで、時間領域における前記下り共有チャネルの開始位置をスロットの先頭と想定する請求項1記載の端末。
- 下り制御チャネルを受信する受信部と、
スケジューリングされた複数の上り共有チャネルを送信する送信部と、
前記上り共有チャネルを送信するとき、前記複数の上り共有チャネルがスケジューリングされるスロットのうち、LBT(Listen before talk)が必要なスロット又は前記下り制御チャネルのモニタリング周期が1スロット以上となり得るスロットで、前記上り共有チャネルに時間領域における複数の開始位置を想定する制御部とを有する端末。 - 下り制御チャネル及びスケジューリングした複数の下り共有チャネルを送信する送信部と、
前記下り共有チャネルを送信するとき、前記複数の下り共有チャネルをスケジューリングしたスロットのうち、LBT(Listen before talk)が必要なスロット又は前記下り制御チャネルのモニタリング周期が1スロット以上となり得るスロットで、前記下り共有チャネルに時間領域における複数の開始位置を想定する制御部とを有する基地局。 - 下り制御チャネル及びスケジューリングされた複数の下り共有チャネルを受信する受信手順と、
前記下り共有チャネルを受信するとき、前記複数の下り共有チャネルがスケジューリングされるスロットのうち、LBT(Listen before talk)が必要なスロット又は前記下り制御チャネルのモニタリング周期が1スロット以上となり得るスロットで、前記下り共有チャネルに時間領域における複数の開始位置を想定する制御手順とを端末が実行する通信方法。
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Title |
---|
ERICSSON: "DL signals and channels for NR-U", 3GPP DRAFT; R1-1907452 DL SIGNALS AND CHANNELS FOR NR-U, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, Nevada, USA; 20190513 - 20190517, 4 May 2019 (2019-05-04), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051709465 * |
VIVO: "Discussion on physical DL channel design in unlicensed spectrum", 3GPP DRAFT; R1-1900108 DISCUSSION ON PHYSICAL DL CHANNEL DESIGN IN UNLICENSED SPECTRUM, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Taipei; 20190121 - 20190125, 12 January 2019 (2019-01-12), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051575733 * |
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