WO2021005769A1 - 端末及び無線通信方法 - Google Patents
端末及び無線通信方法 Download PDFInfo
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- WO2021005769A1 WO2021005769A1 PCT/JP2019/027420 JP2019027420W WO2021005769A1 WO 2021005769 A1 WO2021005769 A1 WO 2021005769A1 JP 2019027420 W JP2019027420 W JP 2019027420W WO 2021005769 A1 WO2021005769 A1 WO 2021005769A1
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- pusch
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
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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
- H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
Definitions
- the present disclosure relates to terminals and wireless communication methods in next-generation mobile communication systems.
- LTE Long Term Evolution
- 3GPP Rel.10-14 LTE-Advanced (3GPP Rel.10-14) has been specified for the purpose of further increasing the capacity and sophistication of LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9).
- a successor system to LTE for example, 5th generation mobile communication system (5G), 5G + (plus), New Radio (NR), 3GPP Rel.15 or later, etc.) is also being considered.
- 5G 5th generation mobile communication system
- 5G + plus
- NR New Radio
- 3GPP Rel.15 or later, etc. is also being considered.
- the user terminal In the existing LTE system (for example, 3GPP Rel.8-14), the user terminal (UE: User Equipment) is based on the downlink control information (DCI: Downlink Control Information, DL assignment, etc.) from the base station. , Controls the reception of downlink shared channels (for example, PDSCH: Physical Downlink Shared Channel). Further, the user terminal controls transmission of an uplink shared channel (for example, PUSCH: Physical Uplink Shared Channel) based on DCI (also referred to as UL grant or the like).
- DCI Downlink Control Information
- DL assignment Downlink assignment
- DCI Downlink Control Information
- PDSCH Physical Downlink Shared Channel
- the user terminal controls transmission of an uplink shared channel (for example, PUSCH: Physical Uplink Shared Channel) based on DCI (also referred to as UL grant or the like).
- future wireless communication systems eg, NR will support scheduling of at least one (also referred to as channel / signal) of a given channel and signal across a slot boundary at a given transmission opportunity.
- the channel / signal may be, for example, a shared channel (eg, uplink shared channel (eg, PUSCH)) or downlink shared channel (eg, PDSCH).
- the UE controls transmission or reception by dividing the shared channel scheduled across the slot boundary (or across the slot boundary) into a plurality of segments.
- the problem is how to control the shared channel when transmitting or receiving by dividing it into segments.
- One of the purposes of the present disclosure is to provide a terminal and a wireless communication method capable of appropriately performing communication even when a predetermined channel / signal is divided and transmitted or received.
- the terminal includes a receiving unit that receives information instructing transmission of the uplink shared channel, and when the uplink shared channel is divided into a plurality of segments and transmitted, the uplink is provided for at least one segment. It is characterized by having a control unit that controls to apply transmission conditions different from the transmission conditions set for transmission of the shared channel.
- communication can be appropriately performed even when a predetermined channel / signal is divided and transmitted or received.
- FIG. 1 is a diagram showing an example of allocation of a shared channel (for example, PUSCH).
- FIG. 2 is a diagram showing an example of multi-segment transmission.
- FIG. 3 is a diagram showing an example of an MCS table.
- FIG. 4 is a diagram showing an example of a redundant version applied to a plurality of PUSCH transmissions (for example, repeated PUSCHs).
- 5A-5E are diagrams showing an example of transmission conditions or transmission parameters applied to a plurality of segments.
- FIG. 6 is a diagram showing other examples of transmission conditions or transmission parameters applied to a plurality of segments.
- FIG. 7 is a diagram showing other examples of transmission conditions or transmission parameters applied to a plurality of segments.
- FIG. 8 is a diagram illustrating a self-decoderable redundant version.
- FIG. 9 is a diagram showing an example of RV applied to a plurality of segments.
- FIG. 10 is a diagram showing another example of RV applied to a plurality of segments.
- FIG. 11 is a diagram showing another example of RV applied to a plurality of segments.
- FIG. 12 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
- FIG. 13 is a diagram showing an example of the configuration of the base station according to the embodiment.
- FIG. 14 is a diagram showing an example of the configuration of the user terminal according to the embodiment.
- FIG. 15 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment.
- the UE refers to an uplink shared channel (eg, PUSCH) or a downlink shared channel (eg, PDSCH) for a transmission occasion (also referred to as period, opportunity, etc.). It has been considered to allocate time domain resources (eg, a predetermined number of symbols) within a single slot.
- PUSCH uplink shared channel
- PDSCH downlink shared channel
- the UE may transmit one or more transport blocks (Transport Block (TB)) at a certain transmission opportunity using the PUSCH assigned to a predetermined number of consecutive symbols in the slot.
- the UE may also transmit one or more TBs at a transmission opportunity using the PDSCH assigned to a predetermined number of consecutive symbols in the slot.
- Transport Block TB
- time domain resources may be allocated across slot boundaries (or across a plurality of slots) for PUSCH or PDSCH of a certain transmission opportunity. Assumed (see Figure 1).
- FIG. 1 shows a case where PUSCHs are assigned across (or crossing) a slot boundary in addition to PUSCHs assigned to a predetermined number of consecutive slots (7 symbols in this case) in one slot.
- the PUSCHs assigned to the symbols # 10 to # 13 of slot #n and the symbols # 0 to # 3 of slot # n + 1 are transmitted across the slot boundary. Further, as shown in FIG. 1, when the PUSCH is repeatedly transmitted over a plurality of transmission opportunities, it is assumed that at least a part of the transmission opportunities or the repeated transmissions are transmitted across the slot boundary.
- Channel / signal transmission using time domain resources allocated across slot boundaries includes multi-segment transmission, 2-segment transmission, cross-slot boundary transmission, discontinuous transmission, multiple division transmission, etc. be called.
- reception of channels / signals transmitted across slot boundaries is also referred to as multi-segment reception, two-segment reception, cross-slot boundary reception, discontinuous reception, multiple division reception, and the like.
- FIG. 2 is a diagram showing an example of multi-segment transmission.
- the multi-segment transmission of PUSCH may be replaced with another signal / channel (for example, PDSCH or the like).
- PDSCH PDSCH
- the case where each segment is divided based on the slot boundary is shown, but the criterion for dividing into each segment is not limited to the slot boundary.
- the case where the symbol length of PUSCH is 7 symbols is shown, but the present invention is not limited to this, and any symbol longer than 2 symbol lengths can be similarly applied.
- the UE may control the transmission of the PUSCH allocated (or scheduled) in one slot or the PUSCH allocated across a plurality of slots based on a predetermined number of segments.
- the UE may divide (or split, split) the PUSCH into a plurality of segments to control the transmission process. For example, the UE may map each segment divided relative to a slot boundary to a predetermined number of assigned symbols in the slot to which each segment corresponds.
- the “segment” may be a predetermined number of symbols in each slot assigned to one transmission opportunity or data transmitted with the predetermined number of symbols. For example, if the first symbol of the PUSCH assigned in one transmission opportunity is in the first slot and the last symbol is in the second slot, for the PUSCH, one or more symbols contained in the first slot are used in the first segment. , One or more symbols contained in the second slot may be the second segment.
- each segment is a predetermined data unit and may be at least a part of one or a plurality of TBs.
- each segment is composed of one or more TBs, one or more code blocks (Code Block (CB)), or one or more code block groups (Code Block Group (CBG)). May be good.
- CB code Block
- CBG code Block Group
- 1CB is a unit for coding TB, and TB may be divided into one or a plurality (CB segmentation). Further, 1 CBG may include a predetermined number of CBs. The divided segment may be called a short segment.
- the size (number of bits) of each segment may be determined based on, for example, at least one of the number of slots to which PUSCH is allocated, the number of allocated symbols in each slot, and the ratio of the number of allocated symbols in each slot. Also, the number of segments may be determined based on the number of slots to which PUSCH is allocated.
- PUSCHs assigned to symbols # 5 to # 11 of slot #n are transmitted within a single slot (single segment) without straddling slot boundaries.
- the transmission of PUSCH without straddling the slot boundary is a single-segment transmission and one segment (one-). It may be called segment transmission, non-segmented transmission, or the like.
- the PUSCHs assigned to the symbols # 10 to # 13 of slot #n and the symbols # 0 to # 2 of slot # n + 1 are transmitted across the slot boundary.
- the transmission of PUSCH across the slot boundary is multi-segment transmission, two-segment transmission, It may also be called cross-slot boundary transmission or the like.
- the multi-segment transmission may be applied to at least a part of the transmission opportunities.
- the PUSCH is repeated twice, the single-segment transmission is applied to the first PUSCH transmission, and the multi-segment transmission is applied to the second PUSCH transmission.
- repeated transmission may be performed in one or more time units.
- Each transmission opportunity may be provided in each time unit.
- Each time unit may be, for example, a slot or a time unit shorter than the slot (eg, also referred to as a mini slot, subslot, half slot, etc.).
- FIG. 2 shows repeated transmission using a 7-symbol mini-slot, but the unit of repeated transmission (for example, symbol length) is not limited to that shown in FIG.
- the fact that the number of repetitions is 1, may indicate that the PUSCH or PDSCH is transmitted once (no repetition).
- repeated transmission may be referred to as slot-aggregation transmission, multi-slot transmission, or the like.
- the number of iterations (aggregation number, aggregation factor) N may be specified to the UE by at least one of the upper layer parameter (for example, "pusch-Aggregation Factor” or "pdsch-Aggregation Factor” of RRC IE) and DCI.
- the upper layer parameter for example, "pusch-Aggregation Factor” or "pdsch-Aggregation Factor” of RRC IE
- transmission opportunities, repeats, slots, mini-slots, etc. can be paraphrased with each other.
- the UE may divide the PUSCH into a plurality of segments (or repetitions) to control transmission.
- the PUSCH when the PUSCH is divided into a plurality of segments and transmitted, how to control the transmission becomes a problem.
- the transmission is performed using a predetermined transmission condition or transmission parameter, but how to control the transmission condition or transmission parameter of the divided segment becomes a problem.
- the transmission condition at least one of the transport block size (TBS) and the redundant version (Redundancy Version (RV)) can be considered.
- FIG. 3 is a diagram showing an example of an MCS table in the future wireless communication system. Note that FIG. 3 is merely an example and is not limited to the values shown, and some items (fields) may be deleted or items not shown may be added.
- the modulation order (Modulation order), the coding rate (also referred to as the assumed coding rate, the target coding rate, etc.), the modulation order, and the coding
- a table (MCS table) associated with an index indicating the rate (for example, MCS index) may be specified (may be stored in the user terminal).
- MCS table in addition to the above three items, spectral efficiency (Spectral efficiency) may be associated.
- the user terminal receives the DCI (DL assignment, at least one of DCI formats 1_0 and 1-11) for scheduling the PDSCH, and is used for the PDSCH based on the MCS table (FIG. 3) and the MCS index included in the DCI.
- the modulation order (Qm) and the coding rate (R) may be determined.
- the user terminal receives the DCI for scheduling the PUSCH (at least one of UL grant and DCI formats 0_0 and 0_1), and is used for the PUSCH based on the MCS table (FIG. 3) and the MCS index included in the DCI.
- the modulation order (Qm) and the coding rate (R) of the above may be determined.
- the user terminal may determine the TBS using at least one of the following steps 1) to 4).
- steps 1) to 4 the determination of the TBS for PDSCH will be described as an example, but in the determination of the TBS for PUSCH, "PDSCH" in the following steps 1) to 4) will be changed to "PUSCH". It can be replaced and applied as appropriate.
- Step 1) The user terminal determines the number of REs (N REs ) in the slot.
- the user terminal may determine the number of RE assigned to PDSCH in 1PRB (N 'RE). For example, the user terminal, based on at least one parameter represented by the following formula (1) may determine the number of RE assigned to PDSCH in PRB (N 'RE).
- N sh symb is the number of symbols (eg, OFDM symbols) scheduled in the slot.
- N PRB DMRS is the number of REs for DMRS per PRB within the scheduled period.
- the number of REs for the DMRS may include group overhead for Code Division Multiplexing (CDM) of the DMRS, as indicated by the DCI (eg, at least one of DCI formats 1_0, 1_1, 0_0 and 0_1). ..
- CDM Code Division Multiplexing
- N PRB oh may be a value set by the upper layer parameter.
- N PRB oh is the overhead indicated by the upper layer parameter (Xoh-PDSCH) and may be any value of 0, 6, 12 or 18. If the Xoh-PDSCH is not set (notified) in the user terminal, the Xoh-PDSCH may be set to 0. Further, in the message 3 (msg3) in the random access procedure, Xoh-PUSCH is set to 0.
- the user terminal may determine the total number of REs (N RE ) assigned to the PDSCH.
- User terminal determined on the basis of the total number of PRB allocated to the number (N 'RE) and the user terminal of RE assigned to PDSCH in PRB (n PRB), the total number of RE assigned to the PDSCH of (N RE) (For example, the following equation (2)) may be used.
- the user terminal quantizes the number of RE assigned to PDSCH in 1PRB the (N 'RE) according to a predetermined rule, the total number of PRB allocated to the quantized RE number and a user terminal and (n PRB)
- the total number of REs assigned to the PDSCH (N RE ) may be determined based on.
- Step 2 The user terminal determines an intermediate number of information bits (intermediate number) (N info) . Specifically, the user terminal may determine the median number (N info ) based on at least one parameter represented by the following equation (3).
- the median number (N info ) may be referred to as a temporary TBS (TBS emp ) or the like.
- N RE is the total number of REs assigned to PDSCH.
- R is the code rate associated with the MCS index included in the DCI in the MCS table (eg, FIG. 3).
- Q m is the modulation order associated with the MCS index included in the DCI in the MCS table.
- v is the number of PDSCH layers.
- Step 3 When the intermediate number ( Ninfo ) of the information bits determined in step 2) is equal to or less than (or less than) a predetermined threshold value (for example, 3824), the user terminal quantizes the intermediate number and quantizes the intermediate number.
- the number (N'info) may be determined.
- the user terminal may calculate the quantized intermediate number (N'info) using, for example, the equation (4).
- the user terminal uses a predetermined table (for example, a table that associates the TBS with the index (also referred to as a quantization table or a TBS table)) and is equal to or larger than the quantized intermediate number (N'info). You may find the closest TBS (not less than).
- a predetermined table for example, a table that associates the TBS with the index (also referred to as a quantization table or a TBS table)
- N'info quantized intermediate number
- Step 4) On the other hand, when the median number (N info ) of the information bits determined in step 2) is greater than (or greater than or equal to) a predetermined threshold value (for example, 3824), the user terminal quantizes the median number (N info ).
- the quantized intermediate number (N'info) may be determined.
- the user terminal may calculate the quantized intermediate number (N'info) using, for example, the equation (5).
- the round function may be rounded up.
- TBS may be determined based on at least one parameter represented by the following formula (6) (for example, using the formula (6)).
- N'info is a quantized intermediate number, and may be calculated using, for example, the above equation (5).
- C may be the number of code blocks (CB: code bock) in which TB is divided.
- the coding rate (R) is greater than (or greater than or equal to) a predetermined threshold value (for example, 1/4), and the quantized intermediate number (N'info) of the information bits is a predetermined threshold value (N'info).
- a predetermined threshold value for example, 1/4
- N'info quantized intermediate number of the information bits
- the coding rate (R) is equal to or less than (for example, 1/4) a predetermined threshold value (for example, less than 1/4), and the quantized intermediate number (N'info) is a predetermined threshold value (for example, 8424). If less than (or less than), the user terminal may determine the TBS based on at least one parameter represented by the following equation (8) (eg, using equation (8)).
- the user terminal has at least the number of REs (N RE ), the coding rate (R), the modulation order (Qm), and the number of layers available for PDSCH or PUSCH in the slot.
- the median number (N info ) of the information bits is determined based on one, and the TBS for PDSCH or PUSCH is determined based on the median number (N'info) obtained by quantizing the median number (N info ). Is being considered.
- ⁇ Redundant version> When transmitting a plurality of shared channels (for example, PUSCH) or repeatedly transmitting a PUSCH, a predetermined redundant version (RV) is applied to each PUSCH transmission.
- a predetermined redundant version RV
- the RV applied to the nth transmission opportunity of the TB may be determined based on a predetermined rule. For example, for repeated transmissions of PUSCH scheduled by CRC scrambled PDCCH (or DCI) using a predetermined RNTI, the RV is determined based on the information notified by DCI and the index of transmission opportunity. May be good.
- the UE determines the RV (which may be read as RV index, RV value, etc.) corresponding to the nth iteration based on the value of a predetermined field (for example, RV field) in the DCI that schedules the PDSCH iteration. You may.
- the nth repetition may be read as the n-1th repetition (for example, the first repetition may be expressed as the 0th repetition).
- the UE may determine the RV index to be applied to the first iteration based on the 2-bit RV field. For example, if the value of the RV field is "00", “01”, “10", “11”, the RV index of the first repetition is “0", “1", “2", “3”, respectively. It may correspond to'.
- FIG. 4 is a diagram showing an example of RV mapping for each transmission opportunity.
- the leftmost column of the table in FIG. 4 shows the RV index (rv id ) indicated by the RV field.
- the UE may determine the RV index applied to the nth iteration (transmission opportunity) according to this value.
- the particular RV sequence may be an RV sequence (eg, RV sequence ⁇ # 0, # 2, # 3, # 1 ⁇ ) that includes different RV indexes (does not contain the same RV index).
- the RV sequence may be composed of one or more RV indexes.
- RV sequences greater than 1 include, for example, RV sequences ⁇ # 0, # 2, # 3, # 1 ⁇ , ⁇ # 0, # 3, # 0, # 3 ⁇ , ⁇ # 0, # 0, # 0, It may include # 0 ⁇ and the like.
- the number of RV sequences applied may be set depending on the transmission type. For example, one RV sequence may be applied to a dynamic-based PUSCH transmission in which PUSCH is scheduled in DCI, and a plurality of RV sequences may be applied to a set grant-based PUSCH transmission.
- the UE may set at least one of the more than 1 RV sequences by higher layer signaling for PUSCH iterations. For example, the UE may determine the RV index to be applied to the first iteration from the set RV sequence based on the 2-bit RV field. The UE may determine the RV index applied to the nth iteration (transmission opportunity), as described above in the first mapping, based on the RV index applied to the first iteration.
- RV sequences ⁇ # 0, # 2, # 3, # 1 ⁇ , ⁇ # 0, # 3, # 0, # 3 ⁇ , and ⁇ # 0, by higher layer signaling At least one of # 0, # 0, # 0 ⁇ may be set.
- TBS transport block size
- RV redundant version
- the present inventors have studied how to apply transmission conditions or parameters to a plurality of segments of a shared channel, and have reached the present invention.
- first to third aspects may be used individually, or at least two may be applied in combination.
- the following description will be given by taking an uplink shared channel (for example, PUSCH) as an example, but the applicable signal / channel is not limited to this.
- the present embodiment may be applied by replacing PUSCH with PDSCH and transmitting with receiving.
- the following aspects are at least a shared channel (PUSCH or PDSCH) to which repeated transmission (also referred to as repetition or nominal repetition) is applied, and a shared channel to which repeated transmission is not applied (or the number of repetitions is 1). Applicable to one.
- PUSCH or PDSCH shared channel to which repeated transmission is not applied
- the TBS of each segment after the division is determined based on a predetermined condition.
- the predetermined condition may be a transmission condition or a transmission parameter including at least one of time, frequency (freq), modulation coding method (MCS), and number of layers (layer).
- the modulation coding method (MCS) may be at least one of a modulation order (Modulation order) and a coding rate (target code rate).
- the UE may control the TBSs of the divided plurality of segments to be the same. Further, the TBS of the PUSCH before the division (also referred to as the original TBS) and the TBS of each segment after the division may be controlled to be the same. By transmitting TB using the same TBS among a plurality of PUSCH transmissions, it becomes possible to appropriately combine a plurality of TBs on the receiving side (for example, a base station on the uplink).
- the UE sets the conditions such as time, frequency (freq), modulation coding method (MCS), and number of layers (layer) for the TBS of each PUSCH transmission (for example, single-segment PUSCH or multi-segment PUSCH). It may be decided based on. For example, the TBS may be determined based on step 1) -step 4) described above.
- the allocation in the time direction of each segment (for example, the number of symbols) is smaller than that of the original PUSCH. Therefore, when the TBS of each segment is the same as the original TBS, other transmission conditions or transmission parameters (for example, at least one of frequency, MCS and layer) are changed, or a predetermined MCS index is applied. You may. For example, the UE may change the transmission conditions or transmission parameters applied to each segment based on at least one of the following options 1-1 to 1-5.
- the frequency resources to be allocated may be increased for at least one of the plurality of segments. That is, in the parameter for determining TBS, since the number of symbols corresponding to the time parameter is reduced by the division, the frequency resource corresponding to the frequency (freq) parameter is increased (see FIGS. 5A and 6).
- the UE may allocate by increasing the number of allocated PRBs of at least one of the plurality of segments from the number of allocated PRBs of PUSCH before division (also referred to as the number of original PRBs).
- the number of PUSCH allocated PRBs before division may be specified by the DCI that schedules the PUSCH.
- the number of allocated PRBs for each segment may be controlled to increase by the same number. For example, when the PUSCH is divided into a first segment and a second segment, the number of allocated PRBs in the first segment and the number of allocated PRBs in the second segment may be changed (for example, increased) in common. ..
- the number of allocated PRBs for each segment may be controlled to be increased separately.
- an increasing frequency resource eg, PRB number
- the time resource eg, number of symbols
- the number of PRBs in the first segment having a small number of symbols may be changed to be larger than the number of PRBs in the second segment having a larger number of symbols than the first segment (see the repeated transmission in FIG. 6). ..
- Information about the frequency resources applied to each segment may be predefined in the specification, or the base station notifies the UE using at least one of higher layer signaling and DCI. You may.
- the original PUSCH eg, the first assigned PUSCH
- the original PUSCH eg, the first assigned PUSCH
- the MCS (eg, at least one of modulation order and code rate) may be increased for at least one of the plurality of segments. That is, in the parameter for determining TBS, the number of symbols corresponding to the time parameter is reduced by the division, so that the MCS is increased (see FIG. 5B).
- the MCS may be at least one of the modulation order and the coding rate, or may be an MCS index.
- the UE may allocate at least one MCS of a plurality of segments by increasing the MCS of the PUSCH before division (also referred to as an original MCS).
- the MCS of the PUSCH before the division may be specified by the DCI that schedules the PUSCH.
- the MCS of each segment may be controlled to increase by the same number. For example, when the PUSCH is divided into a first segment and a second segment, the MCS of the first segment and the MCS of the second segment may be changed (for example, increased) in common.
- the MCS of each segment may be controlled to be increased separately.
- the increasing MCS may be determined based on the time resources of each segment (eg, the number of symbols).
- the MCS of the first segment having a small number of symbols may be changed to be larger than the MCS of the second segment having a larger number of symbols than the first segment.
- Information about the MCS applied to each segment may be predefined in the specification, or the base station may notify the UE using at least one of higher layer signaling and DCI. Good.
- a specific MCS index or a specific modulation order may be applied to at least one of the plurality of segments.
- the particular MCS index may be a reserved MCS index.
- the specific modulation order may be a fixed value defined in advance in the specifications, or a value notified or set by the base station.
- the UE When using a specific MCS index (for example, reserved MCS index), the UE does not use the above-mentioned 4 steps, but instead uses the latest PDCCH (latest PDCCH) for DCI (MCS index is 0 or more and 27 or less). Determined based on. That is, by applying a specific MCS index or a specific modulation order, the original TBS can be maintained without re-calculate.
- a specific MCS index for example, reserved MCS index
- Spatial resources may be increased for at least one of the plurality of segments. That is, in the parameter for determining TBS, the number of symbols corresponding to the time parameter is reduced by the division, so that the spatial resource is increased (see FIGS. 5D and 7).
- the UE may allocate at least one spatial resource (for example, the number of layers) of the plurality of segments by increasing the spatial resource (for example, the number of original layers) of the PUSCH before division.
- the spatial resource of the PUSCH before division (for example, the number of layers) may be specified by the DCI that schedules the PUSCH.
- the number of layers in each segment may be controlled to increase by the same number. For example, when the PUSCH is divided into a first segment and a second segment, the number of layers in the first segment and the number of layers in the second segment may be changed (for example, increased) in common.
- the MCS of each segment may be controlled to be increased separately.
- the number of layers to be increased may be determined based on the time resource (for example, the number of symbols) of each segment.
- the number of layers in the first segment having a small number of symbols may be changed to be larger than the number of layers in the second segment having a larger number of symbols than the first segment (see repeated transmission in FIG. 7). ..
- Information about the number of layers applied to each segment may be predefined in the specification, or the base station notifies the UE using at least one of higher layer signaling and DCI. You may.
- the same TBS as the original PUSCH (eg, the initially allocated PUSCH) is maintained, with or without the allocation of frequency resources and MCS. be able to. Further, since the frequency resource is not changed, it is possible to suppress the complicated allocation control of the segment PUSCH.
- At least two options may be applied in combination.
- frequency resources eg, number of PRBs
- MCS may be increased for at least one of the plurality of segments. That is, in the parameter for determining TBS, the frequency resource and MCS are increased because the number of symbols corresponding to the time parameter is reduced by the division (see FIG. 5E).
- frequency resources and spatial resources may be increased, MCS and spatial resources may be increased, and frequency resources, MCS and spatial resources may be increased.
- the parameter to be increased may be common to a plurality of segments. Alternatively, the parameters that increase for each segment may be set separately.
- the UE may autonomously (for example, automatically) adjust the transmission conditions or parameters of each segment. For example, when the scheduled or set PUSCH crosses the slot boundary, the PUSCH may be divided based on the slot boundary, and at least one of the above options 1-1 to 1-5 may be applied to the divided segments. ..
- the UE when applying option 1-1, the UE adjusts the number of PRBs in each segment.
- the UE adjusts the MCS of each segment when applying option 1-2.
- the UE adjusts the number of layers in each segment when applying options 1-4.
- the UE adjusts at least two of the PRB number, MCS and layer number of each segment when applying option 1-5.
- which MCS index is applied may be set by higher layer signaling or may be selected based on the code rate.
- option 1-3 the same value as the modulation order notified in the MCS field included in the DCI may be applied as the modulation order.
- the UE may adjust the transmission conditions or parameters of each segment based on the information notified from the base station. For example, the UE determines transmission conditions or parameters to apply to each segment based on information explicitly notified using at least one of DCI's predetermined fields (eg, new fields) and higher layer signaling. May be good.
- DCI's predetermined fields eg, new fields
- the transmission conditions or parameters applied to each segment may be controlled based on the schedule status (or communication status). For example, the UE may control to apply option 1-1 when resources are available in the frequency direction of each segment. Further, when the frequency resource of the original PUSCH (for example, the number of allocated PRBs) is equal to or more than a predetermined value, the UE does not increase the frequency resource and uses another method (for example, any of options 1-2 to 1-4). May be controlled to apply.
- the frequency resource of the original PUSCH for example, the number of allocated PRBs
- the UE does not increase the frequency resource and uses another method (for example, any of options 1-2 to 1-4). May be controlled to apply.
- the UE controls so that the MCS is not increased and another method (for example, any of options 1-1, 1-3, and 1-4) is applied. You may.
- the MCS index may be changed by using option 1-5.
- the changed MCS index may be changed so as to be in a range close to the original MCS index.
- the UE when the coding rate applied to each segment (for example, effective coding rate) is higher than a predetermined value (for example, 0.95), the UE does not transmit the PUSCH (or each segment) (for example,). It may be controlled to skip). By skipping the transmission of the PUSCH segment, which has a low possibility of decoding, it is possible to suppress an increase in the power consumption of the UE (for example, battery saving) and reduce the influence of interference with other cells.
- a predetermined value for example 0.95
- first segment in which the coding rate is equal to or less than a predetermined value and a second segment in which the coding rate is higher than the predetermined value among the plurality of segments, only the first segment is transmitted (the second segment is not transmitted). ), Or it may be controlled not to transmit both the first segment and the second segment.
- the UE may be controlled to transmit the PUSCH (or each segment) regardless of the coding rate applied to each segment. That is, transmission may be controlled even when the coding rate applied to each segment is higher than a predetermined value.
- the base station can appropriately decode the PUSCH having a high coding rate by combining with another PUSCH (for example, soft combining).
- each segment may be transmitted using the same transmission power as the transmission power set in the PUSCH before division (for example, the original PUSCH). .. In this case, the UE applies the same transmit power to each segment.
- each segment is transmitted using a transmission power different from the transmission power set in the PUSCH (for example, the original PUSCH) before the division. May be good. For example, if the transmission power set in the original PUSCH does not exceed a predetermined value (for example, when power is not limited), the transmission power of each segment may be increased (or boosted).
- a predetermined value for example, when power is not limited
- the predetermined value may be the maximum allowable transmission power (Pcmax), and the transmission power of the original PUSCH is equal to or less than the maximum allowable power P PUSCH, b, f, c (I, j, qd, l) ⁇ P CMAX, When f, c (i) is satisfied (or within the range not exceeding PCMAX, f, c (i)), the transmission power may be increased.
- the value that increases the transmission power may be determined autonomously on the UE side (UE implementation), may be defined in the specifications, or the base station notifies the UE by higher layer signaling or the like. May be done. For example, when the coding rate of the segment PUSCH is higher than that of the original PUSCH (for example, it is doubled), the transmission power may be boosted by a predetermined value (for example, 3 dB). As a result, deterioration of communication quality can be suppressed even when the coding rate of each segment is high.
- a predetermined value for example, 3 dB
- the RV to be applied to each segment after the division is determined based on a predetermined condition.
- the UE may determine the RV to apply to each segment based on at least one of the following options 2-1 to 2-4.
- the same RV may be applied to multiple segments. For example, when the UE divides the PUSCH into a plurality of segments and transmits the PUSCH, the UE applies the same RV to each segment. Further, the RV applied to each segment may be an RV (for example, an original RV) set in the PUSCH before division (for example, the original PUSCH).
- the RV of the original PUSCH may be notified by the DCI that schedules the original PUSCH. For example, when the RV notified by the PDCCH (or DCI) that schedules the PUSCH is 0, the UE applies 0 as the RV for a plurality of segments to divide and transmit the PUSCH.
- Different RVs may be applied to multiple segments. For example, when the UE divides the PUSCH into a plurality of segments and transmits the PUSCH, the UE applies different RVs to at least two segments of the plurality of segments. Further, the RV applied to at least one of the plurality of segments may be an RV set in the PUSCH before division (for example, the original PUSCH). The RV applied to the other segments may be selected based on predetermined conditions.
- the original RV is applied to one of the first segment and the second segment, and the other RV different from the original RV is applied to the other. May be applied.
- An RV different from the original RV may be determined based on predetermined conditions (for example, any of predetermined conditions 1 to 4 shown below).
- An RV different from the RV set in the PUSCH before division may be applied to a plurality of segments.
- the same RV may be applied to the plurality of segments, or different RVs may be applied.
- an RV different from the original RV may be applied to both the first segment and the second segment.
- An RV different from the original RV may be determined based on predetermined conditions (for example, any of predetermined conditions 1 to 4 shown below).
- the RVs to be applied may be selected based on predetermined conditions. For example, the UE may apply a non-zero RV for each segment if the RV notified by the PDCCH (or DCI) that schedules the PUSCH is zero. For example, when there are two segments, the RV of the first segment (for example, the segment transmitted first in the time direction) may be 2, and the RV of the second segment may be 3.
- a specific RV sequence may be applied to a plurality of segments.
- the RV sequence is at least one of ⁇ # 0, # 2, # 3, # 1 ⁇ , ⁇ # 0, # 3, # 0, # 3 ⁇ , and ⁇ # 0, # 0, # 0, # 0 ⁇ . It may be.
- the UE may determine the changed RV based on a predetermined condition.
- the RV of the divided segment PUSCH may be changed, or the segment PUSCH and another non-divided PUSCH (for example, after the divided segment PUSCH).
- the RV of PUSCH) transmitted to may be changed.
- the UE may determine the RV to be applied to the plurality of segments divided from the original PUSCH based on a predetermined RV sequence. For example, assume that the RV sequence is ⁇ # 0, # 2, # 3, # 1 ⁇ and the number of segments to be divided is 2 (first segment and second segment). In this case, the UE may apply the RV notified by the PDCCH (or DCI) that schedules the PUSCH to the first segment, and apply the RV to the right of the RV to the second segment in the RV sequence. Good.
- the UE determines that the RV of the first segment is 0 and the RV of the second segment is 2. May be good.
- the RV sequence used is not limited to ⁇ # 0, # 2, # 3, # 1 ⁇ . Other RV sequences such as ⁇ # 0, # 3, # 0, # 3 ⁇ or ⁇ # 0, # 0, # 0, # 0 ⁇ may be used.
- the RV sequence to be used may be defined in advance in the specifications, or may be notified from the base station to the UE by using upper layer signaling or the like.
- the UE may select an RV to be applied to a plurality of segments divided from the original PUSCH from a specific RV value.
- the particular RV value may be a Self-decodable RV.
- the UE applies the notified RV (or the notified RV and another specific RV) if the RV notified by the PDCCH (or DCI) that schedules the PUSCH is a specific RV. You may. For example, if the RV notified by the PDCCH (or DCI) that schedules the PUSCH is 0, the UE determines that the RV of the first segment is 0 and the RV of the second segment is another particular RV. It may be determined that 3 is.
- the UE may apply the notified RV and the specific RV to each of the two segments if the RV notified by the PDCCH (or DCI) that schedules the PUSCH is not a specific RV.
- the second PUSCH transmission is divided into a plurality of segments. If the RV of the second PUSCH transmission (divided PUSCH) is 2 based on the PDCCH (or DCI) that schedules the repetition of the PUSCH, the UE determines that the RV of the first segment is 2.
- the RV of the second segment may be determined to be a specific RV of 0 or 3 (see FIG. 9).
- the UE may apply a specific RV to a plurality of segments without applying the notified RV unless the RV notified by the PDCCH (or DCI) that schedules the PUSCH is a specific RV. ..
- the decoding probability of the PUSCH to which the RV is applied can be improved, so that the communication quality (for example, SNR) can be improved.
- the UE When dividing a part of the PUSCH that is repeatedly transmitted into a plurality of segments, the UE changes the RV of the divided segment from the RV set in the original PUSCH and then transmits the RV of the PUSCH. May also be changed.
- the RV of the PUSCH transmitted after the PUSCH transmitted divided into a plurality of segments may be determined in the same manner as in the segment.
- the RV applied to the non-divided PUSCH may be determined in consideration of the RV applied to the divided segment. For example, when selecting an RV to be applied to a segment divided based on a predetermined RV sequence (for example, an RV different from the original PUSCH), the remaining repeated PUSCHs after the segment PUSCH are also applied based on the predetermined RV sequence. The RV to be used may be determined.
- the UE applies the RV notified by the PDCCH (or DCI) that schedules the PUSCH to the first segment, and in the RV sequence the RV adjacent to the RV (eg, to the right) is the second. It may be applied to a segment.
- the second PUSCH transmission is divided into a plurality of segments. If the RV of the second PUSCH transmission is 2 based on the PDCCH (or DCI) that schedules the repetition of the PUSCH, the UE determines that the RV of the first segment is 2, and the RV of the second segment. May be determined as 3. Further, the UE sets the RV applied to the PUSCH transmission following the segment to 1. In this case, the UE controls to apply a different RV even if the original RV for the PUSCH is 3. (See FIG. 10).
- the RV sequence used is not limited to ⁇ # 0, # 2, # 3, # 1 ⁇ . Other RV sequences such as ⁇ # 0, # 3, # 0, # 3 ⁇ or ⁇ # 0, # 0, # 0, # 0 ⁇ may be used.
- the RV sequence to be used may be defined in advance in the specifications, or may be notified from the base station to the UE by using upper layer signaling or the like.
- the decoding gain can be obtained by receiving all the segments.
- the RV applied to the divided segments may not be considered, and the RV applied to the PUSCH not divided may be determined. That is, the RV is determined separately for the divided segment PUSCH and the non-divided PUSCH.
- the PUSCH divided into a plurality of segments and the PUSCH not divided are each a predetermined RV.
- the RV to be applied may be determined based on the sequence.
- the UE applies the RV notified by the PDCCH (or DCI) that schedules the PUSCH to the first segment, and in the RV sequence the RV adjacent to the RV (eg, to the right) is the second. It may be applied to a segment. Further, the RV sequence may be applied to the PUSCH that is not divided into a plurality of segments (the PUSCH excluding the PUSCH that is divided into a plurality of segments).
- the second PUSCH transmission is divided into a plurality of segments. If the RV notified by the PDCCH (or DCI) that schedules the repetition of the PUSCH is 0, the UE sets the RV applied to the first PUSCH transmission to 0.
- the RV of the first segment may be determined to be 0, and the RV of the second segment may be determined to be 2. Further, the UE sets the RV applied to the PUSCH transmission following the segment to 2 (see FIG. 11). In this case, the UE controls to apply the RV sequence (for example, apply a different RV) except for the second PUSCH even if the original RV for the third PUSCH is 3.
- the RV sequence used is not limited to ⁇ # 0, # 2, # 3, # 1 ⁇ . Other RV sequences such as ⁇ # 0, # 3, # 0, # 3 ⁇ or ⁇ # 0, # 0, # 0, # 0 ⁇ may be used.
- the RV sequence to be used may be defined in advance in the specifications, or may be notified from the base station to the UE by using upper layer signaling or the like.
- the method for determining the RV to be applied to the PUSCH transmission may be selected based on predetermined conditions.
- the UE may select the RV determination method based on any of the following options A to D.
- the RV determination method may be set based on the PUSCH scheduling type.
- the UE may apply different RV determination methods for a dynamically scheduled grant-based PUSCH in DCI and a configuration grant-based PUSCH that is not dynamically scheduled in DCI.
- the RV determination method may be defined in the specifications, or may be set from the base station to the UE by higher layer signaling or the like.
- the base station may notify the UE of the RV determination method using L1 signaling. For example, the UE may select the RV determination method based on at least one of the predetermined DCI fields transmitted from the base station, the DCI format, and the applied RNTI.
- the RV determination method may be selected based on the TBS determination method (or the TBS determination method and the RV determination method may be associated). For example, when the UE uses the first TBS determination method (option 1-1), the UE may apply the first RV determination method (for example, predetermined condition 2 of 2-2).
- the base station may notify the UE of the RV determination method using higher layer signaling.
- the RV determination method may be defined in advance in the specifications.
- a parameter relating to overhead indicates overhead from other signals (eg, CSI-RS, PT-RS, etc.).
- N PRB oh may indicate the number of resource elements (RE) of other signals in PRB
- N PRB oh may be a value configured by a higher layer parameter.
- N PRB oh is the overhead indicated by the upper layer parameter (Xoh-PUSCH) and may be any value of 0, 6, 12 or 18. If Xoh-PUSCH is not set (notified) in the user terminal, Xoh-PUSCH may be set to 0.
- the UE may determine TBS or the like based on N PRB oh .
- the NPRB oh applied to each segment after the division is based on a predetermined condition.
- the UE may determine the N PRB oh to apply to each segment based on at least one of the following options 3-1 to 3-4.
- the same N PRB oh may be applied to a plurality of segments. For example, when the UE divides the PUSCH into a plurality of segments and transmits the PUSCH, it is assumed that the same NPRB oh is used for each segment. Further, the N PRB oh applied to each segment may be the N PRB oh set in the PUSCH before division (for example, the original PUSCH).
- the N PRB oh of the original PUSCH may be notified by higher layer signaling (eg, xOverhead). For example, when the N PRB oh notified by the upper layer signaling is 0 in X, the UE applies X as the N PRB oh for a plurality of segments to divide and transmit the PUSCH.
- higher layer signaling eg, xOverhead
- the complexity of scheduling can be suppressed by determining the N PRB oh to be applied to each segment based on the N PRB oh set in PUSCH in advance.
- Different N PRB oh may be applied to a plurality of segments. For example, when the UE divides the PUSCH into a plurality of segments and transmits the PUSCH, it is assumed that different N PRB ohs are set for at least two segments out of the plurality of segments. Further, the N PRB oh applied to at least one of the plurality of segments may be an N PRB oh (original N PRB oh ) set in the PUSCH before division (for example, the original PUSCH).
- N PRB oh applied to other segments may be original N PRB oh different N PRB oh.
- Original N PRB oh different N PRB oh may be selected based on a predetermined condition.
- the UE may determine an N PRB oh different from the original N PRB oh based on at least one of scheduling conditions, a predetermined DCI field, and higher layer signaling.
- different N PRB oh for example, 0
- At least one of the plurality of segments for example, the first segment
- N PRB oh different from the N PRB oh set in the PUSCH before division may be applied to a plurality of segments.
- the same N PRB oh may be applied to the plurality of segments, or different N PRB ohs may be applied.
- N PRB oh may be selected to be applied based on a predetermined condition. For example, the UE may apply a non-zero N PRB oh for each segment when the N PRB oh notified by the upper layer signaling is 0. For example, if the segment is two, the first segment (e.g., segment sent in the time direction the first) to N PRB oh 6, the N PRB oh the second segment may be 12.
- a specific N PRB oh may be applied to a plurality of segments.
- the specific N PRB oh may be 0.
- wireless communication system Wireless communication system
- communication is performed using any one of the wireless communication methods according to each of the above-described embodiments of the present disclosure or a combination thereof.
- FIG. 12 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
- the wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc. specified by Third Generation Partnership Project (3GPP). ..
- the wireless communication system 1 may support dual connectivity between a plurality of Radio Access Technology (RAT) (Multi-RAT Dual Connectivity (MR-DC)).
- MR-DC is dual connectivity (E-UTRA-NR Dual Connectivity (EN-DC)) between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR, and dual connectivity between NR and LTE (NR-E).
- -UTRA Dual Connectivity (NE-DC) may be included.
- the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)).
- the NR base station (gNB) is MN
- the LTE (E-UTRA) base station (eNB) is SN.
- the wireless communication system 1 has dual connectivity between a plurality of base stations in the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) in which both MN and SN are NR base stations (gNB). )) May be supported.
- a plurality of base stations in the same RAT for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) in which both MN and SN are NR base stations (gNB). )
- NR-NR Dual Connectivity NR-DC
- gNB NR base stations
- the wireless communication system 1 includes a base station 11 that forms a macro cell C1 having a relatively wide coverage, and a base station 12 (12a-12c) that is arranged in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. You may prepare.
- the user terminal 20 may be located in at least one cell. The arrangement, number, and the like of each cell and the user terminal 20 are not limited to the mode shown in the figure.
- the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.
- the user terminal 20 may be connected to at least one of the plurality of base stations 10.
- the user terminal 20 may use at least one of carrier aggregation (Carrier Aggregation (CA)) and dual connectivity (DC) using a plurality of component carriers (Component Carrier (CC)).
- CA Carrier Aggregation
- DC dual connectivity
- CC Component Carrier
- Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)).
- the macro cell C1 may be included in FR1 and the small cell C2 may be included in FR2.
- FR1 may be in a frequency band of 6 GHz or less (sub 6 GHz (sub-6 GHz)), and FR2 may be in a frequency band higher than 24 GHz (above-24 GHz).
- the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a frequency band higher than FR2.
- the user terminal 20 may perform communication using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- the plurality of base stations 10 may be connected by wire (for example, an optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (for example, NR communication).
- wire for example, an optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.
- NR communication for example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 corresponding to the upper station is an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to a relay station (relay) is IAB. It may be called a node.
- IAB Integrated Access Backhaul
- relay station relay station
- the base station 10 may be connected to the core network 30 via another base station 10 or directly.
- the core network 30 may include at least one such as Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).
- EPC Evolved Packet Core
- 5GCN 5G Core Network
- NGC Next Generation Core
- the user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.
- a wireless access method based on Orthogonal Frequency Division Multiplexing may be used.
- OFDM Orthogonal Frequency Division Multiplexing
- DL Downlink
- UL Uplink
- CP-OFDM Cyclic Prefix OFDM
- DFT-s-OFDM Discrete Fourier Transform Spread OFDM
- OFDMA Orthogonal Frequency Division Multiple. Access
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the wireless access method may be called a waveform.
- another wireless access system for example, another single carrier transmission system, another multi-carrier transmission system
- the UL and DL wireless access systems may be used as the UL and DL wireless access systems.
- downlink shared channels Physical Downlink Shared Channel (PDSCH)
- broadcast channels Physical Broadcast Channel (PBCH)
- downlink control channels Physical Downlink Control
- Channel PDCCH
- the uplink shared channel Physical Uplink Shared Channel (PUSCH)
- the uplink control channel Physical Uplink Control Channel (PUCCH)
- the random access channel shared by each user terminal 20 are used.
- Physical Random Access Channel (PRACH) Physical Random Access Channel or the like may be used.
- PDSCH User data, upper layer control information, System Information Block (SIB), etc. are transmitted by PDSCH.
- User data, upper layer control information, and the like may be transmitted by the PUSCH.
- MIB Master Information Block
- PBCH Master Information Block
- Lower layer control information may be transmitted by PDCCH.
- the lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of PDSCH and PUSCH.
- DCI Downlink Control Information
- the DCI that schedules PDSCH may be called DL assignment, DL DCI, etc.
- the DCI that schedules PUSCH may be called UL grant, UL DCI, etc.
- the PDSCH may be read as DL data
- the PUSCH may be read as UL data.
- a control resource set (COntrol REsource SET (CORESET)) and a search space (search space) may be used for detecting PDCCH.
- CORESET corresponds to a resource that searches for DCI.
- the search space corresponds to the search area and search method of PDCCH candidates (PDCCH candidates).
- One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a search space based on the search space settings.
- One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels.
- One or more search spaces may be referred to as a search space set.
- the "search space”, “search space set”, “search space setting”, “search space set setting”, “CORESET”, “CORESET setting”, etc. of the present disclosure may be read as each other.
- channel state information (Channel State Information (CSI)
- delivery confirmation information for example, may be called Hybrid Automatic Repeat reQuest ACK knowledgement (HARQ-ACK), ACK / NACK, etc.
- scheduling request (Scheduling Request () Uplink Control Information (UCI) including at least one of SR)
- the PRACH may transmit a random access preamble for establishing a connection with the cell.
- downlinks, uplinks, etc. may be expressed without “links”. Further, it may be expressed without adding "Physical" at the beginning of various channels.
- a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), and the like may be transmitted.
- the DL-RS includes a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), and a demodulation reference signal (DeModulation).
- CRS Cell-specific Reference Signal
- CSI-RS Channel State Information Reference Signal
- DeModulation Demodulation reference signal
- Reference Signal (DMRS)), positioning reference signal (Positioning Reference Signal (PRS)), phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), and the like may be transmitted.
- PRS Positioning Reference Signal
- PTRS Phase Tracking Reference Signal
- the synchronization signal may be, for example, at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)).
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- the signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be referred to as SS / PBCH block, SS Block (SSB) and the like.
- SS, SSB and the like may also be called a reference signal.
- a measurement reference signal Sounding Reference Signal (SRS)
- a demodulation reference signal DMRS
- UL-RS Uplink Reference Signal
- UE-specific Reference Signal UE-specific Reference Signal
- FIG. 13 is a diagram showing an example of the configuration of the base station according to the embodiment.
- the base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission line interface 140.
- the control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140 may each be provided with one or more.
- the functional blocks of the feature portion in the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. A part of the processing of each part described below may be omitted.
- the control unit 110 controls the entire base station 10.
- the control unit 110 can be composed of a controller, a control circuit, and the like described based on the common recognition in the technical field according to the present disclosure.
- the control unit 110 may control signal generation, scheduling (for example, resource allocation, mapping) and the like.
- the control unit 110 may control transmission / reception, measurement, and the like using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140.
- the control unit 110 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 120.
- the control unit 110 may perform call processing (setting, release, etc.) of the communication channel, state management of the base station 10, management of radio resources, and the like.
- the transmission / reception unit 120 may include a baseband unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123.
- the baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212.
- the transmitter / receiver 120 includes a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on common recognition in the technical fields according to the present disclosure. be able to.
- the transmission / reception unit 120 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit.
- the transmission unit may be composed of a transmission processing unit 1211 and an RF unit 122.
- the receiving unit may be composed of a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.
- the transmitting / receiving antenna 130 can be composed of an antenna described based on common recognition in the technical field according to the present disclosure, for example, an array antenna.
- the transmission / reception unit 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like.
- the transmission / reception unit 120 may receive the above-mentioned uplink channel, uplink reference signal, and the like.
- the transmission / reception unit 120 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.
- digital beamforming for example, precoding
- analog beamforming for example, phase rotation
- the transmission / reception unit 120 processes, for example, Packet Data Convergence Protocol (PDCP) layer processing and Radio Link Control (RLC) layer processing (for example, RLC) for data, control information, etc. acquired from control unit 110.
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC Medium Access Control
- HARQ retransmission control HARQ retransmission control
- the transmission / reception unit 120 performs channel coding (may include error correction coding), modulation, mapping, filtering, and discrete Fourier transform (Discrete Fourier Transform (DFT)) for the bit string to be transmitted.
- the base band signal may be output by performing processing (if necessary), inverse fast Fourier transform (IFFT) processing, precoding, digital-analog conversion, and other transmission processing.
- IFFT inverse fast Fourier transform
- the transmission / reception unit 120 may perform modulation, filtering, amplification, etc. on the baseband signal to the radio frequency band, and transmit the signal in the radio frequency band via the transmission / reception antenna 130. ..
- the transmission / reception unit 120 may perform amplification, filtering, demodulation to a baseband signal, or the like on the signal in the radio frequency band received by the transmission / reception antenna 130.
- the transmission / reception unit 120 (reception processing unit 1212) performs analog-digital conversion, fast Fourier transform (FFT) processing, and inverse discrete Fourier transform (IDFT) on the acquired baseband signal. )) Processing (if necessary), filtering, decoding, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing are applied. User data and the like may be acquired.
- FFT fast Fourier transform
- IDFT inverse discrete Fourier transform
- the transmission / reception unit 120 may perform measurement on the received signal.
- the measuring unit 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, or the like based on the received signal.
- the measuring unit 123 has received power (for example, Reference Signal Received Power (RSRP)) and reception quality (for example, Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)).
- RSRP Reference Signal Received Power
- RSSQ Reference Signal Received Quality
- SINR Signal to Noise Ratio
- Signal strength for example, Received Signal Strength Indicator (RSSI)
- propagation path information for example, CSI
- the measurement result may be output to the control unit 110.
- the transmission line interface 140 transmits and receives signals (backhaul signaling) to and from devices included in the core network 30, other base stations 10, and the like, and provides user data (user plane data) and control plane for the user terminal 20. Data or the like may be acquired or transmitted.
- the transmitting unit and the receiving unit of the base station 10 in the present disclosure may be composed of at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140.
- the transmission / reception unit 120 transmits information instructing transmission of the uplink shared channel. Further, the transmission / reception unit 120 may transmit at least one of the number of repetitions, information on TBS, information on RV, and information on overhead.
- the control unit 110 applies a transmission condition different from the transmission condition set for transmission of the uplink shared channel to at least one segment. You may control it.
- the control unit 110 When the UE divides the uplink shared channel into a plurality of segments for transmission, the control unit 110 has a redundant version different from the redundant version set for transmission of the uplink shared channel for at least one segment, or the same redundant version. It may be controlled to be applied.
- FIG. 14 is a diagram showing an example of the configuration of the user terminal according to the embodiment.
- the user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230.
- the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may each be provided with one or more.
- this example mainly shows the functional blocks of the feature portion in the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. A part of the processing of each part described below may be omitted.
- the control unit 210 controls the entire user terminal 20.
- the control unit 210 can be composed of a controller, a control circuit, and the like described based on the common recognition in the technical field according to the present disclosure.
- the control unit 210 may control signal generation, mapping, and the like.
- the control unit 210 may control transmission / reception, measurement, and the like using the transmission / reception unit 220 and the transmission / reception antenna 230.
- the control unit 210 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 220.
- the transmission / reception unit 220 may include a baseband unit 221 and an RF unit 222, and a measurement unit 223.
- the baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212.
- the transmitter / receiver 220 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on the common recognition in the technical field according to the present disclosure.
- the transmission / reception unit 220 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit.
- the transmission unit may be composed of a transmission processing unit 2211 and an RF unit 222.
- the receiving unit may be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.
- the transmitting / receiving antenna 230 can be composed of an antenna described based on common recognition in the technical field according to the present disclosure, for example, an array antenna.
- the transmission / reception unit 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like.
- the transmission / reception unit 220 may transmit the above-mentioned uplink channel, uplink reference signal, and the like.
- the transmission / reception unit 220 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.
- digital beamforming for example, precoding
- analog beamforming for example, phase rotation
- the transmission / reception unit 220 (transmission processing unit 2211) performs PDCP layer processing, RLC layer processing (for example, RLC retransmission control), and MAC layer processing (for example, for data, control information, etc. acquired from the control unit 210). , HARQ retransmission control), etc., to generate a bit string to be transmitted.
- RLC layer processing for example, RLC retransmission control
- MAC layer processing for example, for data, control information, etc. acquired from the control unit 210.
- HARQ retransmission control HARQ retransmission control
- the transmission / reception unit 220 (transmission processing unit 2211) performs channel coding (may include error correction coding), modulation, mapping, filtering processing, DFT processing (if necessary), and IFFT processing for the bit string to be transmitted. , Precoding, digital-to-analog conversion, and other transmission processing may be performed to output the baseband signal.
- Whether or not to apply the DFT process may be based on the transform precoding setting.
- the transmission / reception unit 220 transmission processing unit 2211 described above for transmitting a channel (for example, PUSCH) using the DFT-s-OFDM waveform when the transform precoding is enabled.
- the DFT process may be performed as the transmission process, and if not, the DFT process may not be performed as the transmission process.
- the transmission / reception unit 220 may perform modulation, filtering, amplification, etc. to the radio frequency band on the baseband signal, and transmit the signal in the radio frequency band via the transmission / reception antenna 230. ..
- the transmission / reception unit 220 may perform amplification, filtering, demodulation to a baseband signal, or the like on the signal in the radio frequency band received by the transmission / reception antenna 230.
- the transmission / reception unit 220 (reception processing unit 2212) performs analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering processing, demapping, demodulation, and decoding (error correction) for the acquired baseband signal. Decoding may be included), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing may be applied to acquire user data and the like.
- the transmission / reception unit 220 may perform measurement on the received signal.
- the measuring unit 223 may perform RRM measurement, CSI measurement, or the like based on the received signal.
- the measuring unit 223 may measure received power (for example, RSRP), reception quality (for example, RSRQ, SINR, SNR), signal strength (for example, RSSI), propagation path information (for example, CSI), and the like.
- the measurement result may be output to the control unit 210.
- the transmitter and receiver of the user terminal 20 in the present disclosure may be composed of at least one of the transmitter / receiver 220 and the transmitter / receiver antenna 230.
- the transmission / reception unit 220 receives information instructing transmission of the uplink shared channel.
- the transmission / reception unit 220 may receive at least one of the number of repetitions, information on TBS, information on RV, and information on overhead.
- control unit 210 controls so as to apply transmission conditions different from the transmission conditions set for transmission of the uplink shared channel to at least one segment. May be good.
- control unit 210 may control the frequency resource used for transmission of at least one segment to be larger than the frequency resource set for transmission of the uplink shared channel.
- control unit 210 sets at least one of the modulation coding methods and modulation orders used for transmission of at least one segment to at least one of the modulation coding methods and modulation orders set for transmission of the uplink shared channel. It may be controlled to change from.
- control unit 210 may control the spatial resources used for transmission of at least one segment to be larger than the spatial resources set for transmission of the uplink shared channel.
- the plurality of segments may be arranged in different slots.
- the control unit 210 when the uplink shared channel is divided into a plurality of segments and transmitted, the control unit 210 is set to a redundant version different from the redundant version set in the uplink shared channel and an uplink shared channel for at least one segment. It may be controlled to apply at least one value different from the parameter value related to the overhead.
- the control unit 210 when the uplink shared channel is divided into a plurality of segments and transmitted, the control unit 210 is set to the same redundant version as the redundant version set in the uplink shared channel and the uplink shared channel for the plurality of segments. It may be controlled to apply at least one of the same values as the parameter values related to the overhead.
- control unit 210 may apply at least one of a specific redundant version and a specific overhead parameter value to at least one of a plurality of segments. Further, when the control unit 210 divides a part of the uplink shared channels into a plurality of segments and transmits the plurality of uplink shared channels that are repeatedly transmitted, the control unit 210 transmits the uplink shared channels without dividing the uplink into a plurality of segments. The same redundant version as the redundant version set for transmission of the upstream shared channel may be applied.
- control unit 210 when the control unit 210 divides a part of the uplink shared channels into a plurality of segments and transmits the plurality of uplink shared channels that are repeatedly transmitted, the control unit 210 transmits the uplink shared channels without dividing the uplink into a plurality of segments.
- a redundant version different from the redundant version set for transmission of the upstream shared channel may be applied.
- each functional block may be realized by using one device that is physically or logically connected, or directly or indirectly (for example, by using two or more physically or logically separated devices). , 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.
- the functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and deemed. , Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc.
- a functional block (constituent unit) for functioning transmission may be referred to as a transmitting unit (transmitting unit), a transmitter (transmitter), or the like.
- the method of realizing each of them is not particularly limited.
- the base station, user terminal, 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 and the user terminal according to the embodiment.
- the base station 10 and the user terminal 20 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. ..
- the hardware configuration of the base station 10 and the user 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.
- processor 1001 may be a plurality of processors. Further, the processing may be executed by one processor, or the processing may be executed simultaneously, sequentially, or by using other methods by two or more processors.
- the processor 1001 may be mounted by one or more chips.
- the processor 1001 For each function of the base station 10 and the user terminal 20, for example, by loading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, the processor 1001 performs an operation and communicates via the communication device 1004. It is realized by controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.
- predetermined software program
- the processor 1001 operates, for example, an operating system to control the entire computer.
- the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, and the like.
- CPU central processing unit
- control unit 110 210
- transmission / reception unit 120 220
- the like may be realized by the processor 1001.
- the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
- a program program code
- the control unit 110 may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and may be realized in the same manner for other functional blocks.
- the memory 1002 is a computer-readable recording medium, for example, at least a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically EPROM (EEPROM), a Random Access Memory (RAM), or any other suitable storage medium. It may be composed of one.
- the memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
- the memory 1002 can store a program (program code), a software module, or the like that can be executed to implement the wireless communication method according to the embodiment of the present disclosure.
- the storage 1003 is a computer-readable recording medium, for example, a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disc (Compact Disc ROM (CD-ROM)), a digital versatile disk, etc.). At least one of Blu-ray® disks, removable disks, hard disk drives, smart cards, flash memory devices (eg cards, sticks, key drives), magnetic stripes, databases, servers, and other suitable storage media. It may be composed of.
- the storage 1003 may be referred to as an auxiliary storage device.
- 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, etc. in order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)). It may be configured to include.
- the transmission / reception unit 120 (220), the transmission / reception antenna 130 (230), and the like described above may be realized by the communication device 1004.
- the transmission / reception unit 120 (220) may be physically or logically separated from the transmission unit 120a (220a) and the reception unit 120b (220b).
- 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, a Light Emitting Diode (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 memory 1002 is connected by the 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 user terminal 20 include a microprocessor, a digital signal processor (Digital Signal Processor (DSP)), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), and the like. It may be configured to include hardware, and a part or all of each functional block may be realized by using 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 wireless frame may be composed of one or more periods (frames) in the time domain.
- Each of the one or more periods (frames) constituting the wireless frame may be referred to as a subframe.
- the subframe may be composed of one or more slots in the time domain.
- the subframe may have a fixed time length (eg, 1 ms) that is independent of numerology.
- the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel.
- Numerology includes, for example, subcarrier spacing (SubCarrier Spacing (SCS)), bandwidth, symbol length, cyclic prefix length, transmission time interval (Transmission Time Interval (TTI)), number of symbols per TTI, and wireless frame configuration.
- SCS subcarrier Spacing
- TTI Transmission Time Interval
- a specific filtering process performed by the transmitter / receiver 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 in the time domain (Orthogonal Frequency Division Multiple Access (OFDMA) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.). Further, the slot may be a time unit based on numerology.
- OFDMA Orthogonal Frequency Division Multiple Access
- 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. Further, the mini slot may be called a sub slot. A minislot may consist of a smaller number of symbols than the slot.
- a PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as a PDSCH (PUSCH) mapping type A.
- the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (PUSCH) mapping type B.
- the wireless frame, subframe, slot, mini slot 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.
- the time units such as frames, subframes, slots, mini slots, and symbols in the present disclosure may be read as each other.
- one subframe may be called TTI
- a plurality of consecutive subframes may be called TTI
- one slot or one minislot may be called TTI. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms. It may be.
- 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 user terminal to allocate radio resources (frequency bandwidth that can be used in each user terminal, 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 3GPP 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.
- a resource block 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 RB may include one or more symbols in the time domain, 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 are a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, and an RB. It may be called a pair or the like.
- PRB Physical RB
- SCG sub-carrier Group
- REG resource element group
- PRB pair an RB. It may be called a pair or the like.
- the resource block may be composed of one or a plurality of resource elements (Resource Element (RE)).
- 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) represents a subset of consecutive common resource blocks (RBs) for a neurology in a carrier. May be good.
- 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 UL BWP (BWP for UL) and DL BWP (BWP for DL).
- BWP UL BWP
- BWP for DL 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 other configurations can be changed in various ways.
- 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. For example, radio resources may be indicated by a given index.
- 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.
- information, signals, etc. can be output from the upper layer to the lower layer and from the lower layer to at least one of the upper layers.
- Information, signals, etc. may be input / output via a plurality of network nodes.
- Input / output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information, signals, etc. can be overwritten, updated, or added. The output information, signals, etc. may be deleted. The input information, signals, etc. may be transmitted to other devices.
- the notification of information is not limited to the mode / embodiment described in the present disclosure, and may be performed by using another method.
- the notification of information in the present disclosure includes physical layer signaling (for example, downlink control information (DCI)), uplink control information (Uplink Control Information (UCI))), and higher layer signaling (for example, Radio Resource Control). (RRC) signaling, broadcast information (master information block (MIB), system information block (SIB), etc.), medium access control (MAC) signaling), other signals or combinations thereof May be carried out by.
- DCI downlink control information
- UCI Uplink Control Information
- RRC Radio Resource Control
- MIB master information block
- SIB system information block
- MAC medium access control
- the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), and the like.
- the RRC signaling may be called an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration) message, or the like.
- MAC signaling may be notified using, for example, a MAC control element (MAC Control Element (CE)).
- CE MAC Control Element
- the notification of predetermined information is not limited to the explicit notification, but implicitly (for example, by not notifying the predetermined information or another information). May be done (by notification of).
- the determination may be made by a value represented by 1 bit (0 or 1), or by a boolean value represented by true or false. , May be done by numerical comparison (eg, comparison with a given value).
- Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name.
- Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted to mean.
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- a transmission medium For example, a website where software uses at least one of wired technology (coaxial cable, fiber optic cable, twist pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.).
- wired technology coaxial cable, fiber optic cable, twist pair, digital subscriber line (DSL), etc.
- wireless technology infrared, microwave, etc.
- Network may mean a device (eg, a base station) included in the network.
- precoding "precoding weight”
- QCL Quality of Co-Co-Location
- TCI state Transmission Configuration Indication state
- space "Spatial relation”, “spatial domain filter”, “transmission power”, “phase rotation”, "antenna port”, “antenna port group”, “layer”, “number of layers”
- Terms such as “rank”, “resource”, “resource set”, “resource group”, “beam”, “beam width”, “beam angle”, "antenna”, “antenna element", “panel” are compatible.
- Base station BS
- radio base station fixed station
- NodeB NodeB
- eNB eNodeB
- gNB gNodeB
- Access point "Transmission point (Transmission Point (TP))
- RP Reception point
- TRP Transmission / Reception Point
- Panel , "Cell”, “sector”, “cell group”, “carrier”, “component carrier” and the like
- 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 (Remote Radio)).
- Communication services can also be provided by Head (RRH))).
- RRH 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.
- MS mobile station
- UE user equipment
- terminal terminal
- Mobile stations include 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 terminals, remote terminals. , 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 wireless 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 (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) 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 Internet of Things (IoT) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be read by the user terminal.
- communication between a base station and a user terminal is replaced with communication between a plurality of user terminals (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
- D2D Device-to-Device
- V2X Vehicle-to-Everything
- Each aspect / embodiment of the present disclosure may be applied to the configuration.
- the user 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 uplink, downlink, and the like may be read as side channels.
- the user terminal in the present disclosure may be read as a base station.
- the base station 10 may have the functions of the user terminal 20 described above.
- the operation performed by the base station may be performed by its upper node (upper node) in some cases.
- various operations performed for communication with a terminal are performed by the base station and one or more network nodes other than the base station (for example,).
- Mobility Management Entity (MME), Serving-Gateway (S-GW), etc. can be considered, but it is not limited to these), or it is clear that it can be performed by a combination thereof.
- each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched with execution.
- the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present disclosure may be changed as long as there is no contradiction.
- the methods described in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.
- LTE Long Term Evolution
- LTE-A LTE-Advanced
- LTE-B LTE-Beyond
- SUPER 3G IMT-Advanced
- 4G 4th generation mobile communication system
- 5G 5th generation mobile communication system
- Future Radio Access FAA
- New-Radio Access Technology RAT
- NR New Radio
- NX New radio access
- Future generation radio access FX
- GSM Global System for Mobile communications
- CDMA2000 Code Division Multiple Access
- UMB Ultra Mobile Broadband
- IEEE 802.11 Wi-Fi (registered trademark)
- IEEE 802.16 WiMAX (registered trademark)
- a plurality of systems may be applied in combination (for example, a combination of LTE or LTE-A and 5G).
- references to elements using designations such as “first”, “second”, etc. 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.
- determining used in this disclosure may include a wide variety of actions.
- judgment (decision) means 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, etc. may be considered to be "judgment”.
- judgment (decision) means receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), access (for example). It may be regarded as “judgment (decision)” such as “accessing” (for example, accessing data in memory).
- judgment (decision) is regarded as “judgment (decision)” of solving, selecting, choosing, establishing, comparing, and the like. May be good. That is, “judgment (decision)” may be regarded as “judgment (decision)” of some action.
- connection are any direct or indirect connection or connection between two or more elements. Means, and can include the presence of one or more intermediate elements between two elements that are “connected” or “joined” to each other.
- the connection or connection between the elements may be physical, logical, or a combination thereof. For example, "connection” may be read as "access”.
- the radio frequency domain microwaves. It can be considered to be “connected” or “coupled” to each other using frequency, electromagnetic energy having wavelengths in the light (both visible and invisible) regions, and the like.
- 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”.
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Abstract
Description
既存システム(例えば、3GPP Rel.15)では、UEは、ある送信機会(transmission occasion)(期間、機会等ともいう)の上り共有チャネル(例えば、PUSCH)又は下り共有チャネル(例えば、PDSCH)に対して、単一のスロット内で時間領域リソース(例えば、所定数のシンボル)を割り当てることが検討されてきた。
図3は、上記将来の無線通信システムにおけるMCSテーブルの一例を示す図である。なお、図3は、例示にすぎず、図示される値に限られないし、一部の項目(フィールド)が削除されてもよいし、図示されない項目が追加されてもよい。
ユーザ端末は、スロット内のREの数(NRE)を決定する。
ユーザ端末は、情報ビットの中間数(intermediate number)(Ninfo)を決定する。具体的には、ユーザ端末は、下記式(3)に示される少なくとも一つのパラメータに基づいて、当該中間数(Ninfo)を決定してもよい。なお、当該中間数(Ninfo)は、一時的なTBS(TBStemp)等と呼ばれてもよい。
ステップ2)で決定される情報ビットの中間数(Ninfo)が所定の閾値(例えば、3824)以下(又は未満)である場合、ユーザ端末は、当該中間数を量子化し、量子化された中間数(N’info)を決定してもよい。ユーザ端末は、例えば、式(4)を用いて、量子化された中間数(N’info)を算出してもよい。
一方、ステップ2)で決定される情報ビットの中間数(Ninfo)が所定の閾値(例えば、3824)より大きい(又は以上)である場合、ユーザ端末は、当該中間数(Ninfo)を量子化し、量子化された中間数(N’info)を決定してもよい。ユーザ端末は、例えば、式(5)を用いて、量子化された中間数(N’info)を算出してもよい。なお、ラウンド関数は、端数を切り上げてもよい。
複数の共有チャネル(例えば、PUSCH)の送信又はPUSCHの繰り返し送信を行う場合、各PUSCH送信において所定の冗長バージョン(RV)が適用される。
第1の態様では、PUSCHを複数のセグメントに分割して送信を行う場合に、各セグメントに適用するトランスポートブロックサイズ(TBS)について説明する。
複数のセグメントの少なくとも一つについて、割当てを行う周波数リソース(例えば、RB数又はPRB数)を増加してもよい。つまり、TBSを決定するパラメータにおいて、分割により時間(time)パラメータに相当するシンボル数が減少するため、周波数(freq)パラメータに相当する周波数リソースを増加させる(図5A、図6参照)。
複数のセグメントの少なくとも一つについて、MCS(例えば、変調次数及び符号化率の少なくとも一つ)を増加してもよい。つまり、TBSを決定するパラメータにおいて、分割により時間(time)パラメータに相当するシンボル数が減少するため、MCSを増加させる(図5B参照)。当該、MCSは、変調次数及び符号化率の少なくとも一つであってもよいし、MCSインデックスであってもよい。
複数のセグメントの少なくとも一つについて、特定のMCSインデックス、又は特定の変調次数を適用してもよい。特定のMCSインデックスは、予約されたMCSインデックス(reserved MCS index)であってもよい。また、特定の変調次数は、仕様であらかじめ定義された固定値、又は基地局から通知又は設定された値であってもよい。
複数のセグメントの少なくとも一つについて、空間リソース(例えば、レイヤ数)を増加してもよい。つまり、TBSを決定するパラメータにおいて、分割により時間(time)パラメータに相当するシンボル数が減少するため、空間リソースを増加させる(図5D、図7参照)。
上記オプション1-1~オプション1-4のうち、少なくとも2つのオプションを組み合わせて適用してもよい。例えば、複数のセグメントの少なくとも一つについて、周波数リソース(例えば、PRB数)及びMCSを増加してもよい。つまり、TBSを決定するパラメータにおいて、分割により時間(time)パラメータに相当するシンボル数が減少するため、周波数リソース及びMCSを増加させる(図5E参照)。
PUSCHを複数セグメントに分割して送信を行う場合、UEは自律的(例えば、automatically)に各セグメントの送信条件又はパラメータを調整してもよい。例えば、スケジュール又は設定されたPUSCHがスロット境界を跨ぐ場合、スロット境界を基準としてPUSCHを分割し、分割されたセグメントに上記オプション1-1~オプション1-5の少なくとも一つを適用してもよい。
PUSCHを複数のセグメント(segmented PUSCH)に分割して送信を行う場合、分割前のPUSCH(例えば、オリジナルPUSCH)に設定された送信電力と同じ送信電力を用いて各セグメントの送信を行ってもよい。この場合、UEは、各セグメントに対して同一の送信電力を適用する。
第2の態様では、PUSCHを複数のセグメントに分割して送信を行う場合に、各セグメントに適用する冗長バージョン(RV)について説明する。
複数のセグメントに対して同じRVを適用してもよい。例えば、UEは、PUSCHを複数のセグメントに分割して送信する場合、各セグメントに対して同じRVを適用する。また、各セグメントに適用するRVは、分割前のPUSCH(例えば、オリジナルPUSCH)に設定されるRV(例えば、オリジナルRV)であってもよい。
複数のセグメントに対して異なるRVを適用してもよい。例えば、UEは、PUSCHを複数のセグメントに分割して送信する場合、複数のセグメントのうち少なくとも2つのセグメント同士に対して異なるRVを適用する。また、複数のセグメントの少なくとも一つに適用するRVは、分割前のPUSCH(例えば、オリジナルPUSCH)に設定されるRVであってもよい。その他のセグメントに適用されるRVは、所定条件に基づいて選択されてもよい。
複数のセグメントに対して分割前のPUSCH(例えば、オリジナルPUSCH)に設定されるRVと異なるRVを適用してもよい。この場合、当該複数のセグメントに同一のRVを適用してもよいし、異なるRVを適用してもよい。
複数のセグメントに対して特定のRVシーケンスを適用してもよい。RVシーケンスは、{#0、#2、#3、#1}、{#0、#3、#0、#3}、及び{#0、#0、#0、#0}の少なくとも一つであってもよい。
[所定条件1]
UEは、オリジナルPUSCHから分割される複数のセグメントに適用するRVを、所定のRVシーケンスに基づいて決定してもよい。例えば、RVシーケンスが{#0、#2、#3、#1}、分割されるセグメント数が2(第1のセグメント及び第2のセグメント)である場合を想定する。この場合、UEは、PUSCHをスケジュールするPDCCH(又は、DCI)で通知されるRVを第1のセグメントに適用し、RVシーケンスにおいて当該RVの右隣のRVを第2のセグメントに適用してもよい。
[所定条件2]
UEは、オリジナルPUSCHから分割される複数のセグメントに適用するRVを、特定のRV値から選択してもよい。特定のRV値は、セルフデコーダブル(Self-decodable)のRVであってもよい。セルフデコーダブルのRVは、システム情報に関するビット(systematic bit)を多く含むRV(例えば、RV=0、3)であってもよい(図8参照)。セルフデコーダブルのRVが適用されたPUSCHを受信することにより、当該RVが適用されたPUSCHに基づいて復号できる確率を高くすることができる。
繰り返し送信されるPUSCHの一部のPUSCHを複数のセグメントに分割する場合、UEは、当該分割されるセグメントのRVをオリジナルPUSCHに設定されるRVから変更するとともに、その後に送信を行うPUSCHのRVも変更してもよい。例えば、複数セグメントに分割されたPUSCH送信後に送信されるPUSCHについて、セグメントと同様の方法でRVを決定してもよい。
分割されたセグメントに適用されるRVを考慮して、分割を行わないPUSCHに適用するRVを決定してもよい。例えば、所定のRVシーケンスに基づいて分割されたセグメントに適用するRV(例えば、オリジナルPUSCHと異なるRV)を選択する場合、セグメントPUSCH以降の残りの繰り返しPUSCHについても当該所定のRVシーケンスに基づいて適用するRVを決定してもよい。
分割されたセグメントに適用されるRVは考慮せず、分割を行わないPUSCHに適用するRVを決定してもよい。つまり、分割されたセグメントPUSCHと、分割しないPUSCHにおいてそれぞれ別々にRVを決定する。
PUSCH送信に適用するRVの決定方法は、所定条件に基づいて選択されてもよい。UEは、以下のオプションA~Dのいずれかに基づいてRVの決定方法を選択してもよい。
PUSCHのスケジューリングタイプに基づいてRVの決定方法が設定されてもよい。例えば、UEは、DCIで動的にスケジュールされるダイナミックグラントベースのPUSCHと、DCIで動的にスケジュールされない設定グラントベースのPUSCHで異なるRV決定方法を適用してもよい。RV決定方法は、仕様で定義されてもよいし、上位レイヤシグナリング等により基地局からUEに設定されてもよい。
基地局からUEに、L1シグナリングを利用してRV決定方法が通知されてもよい。例えば、UEは、基地局から送信されるDCIの所定フィールド、DCIフォーマット、及び適用されるRNTIの少なくとも一つに基づいてRV決定方法を選択してもよい。
TBSの決定方法に基づいてRV決定方法が選択されて(又は、TBSの決定方法とRVの決定方法が関連づけられて)いてもよい。例えば、UEは、第1のTBS決定方法(オプション1-1)を利用する場合に、第1のRV決定方法(例えば、2-2の所定条件2)を適用してもよい。
基地局からUEに、上位レイヤシグナリングを利用してRV決定方法が通知されてもよい。あるいは、仕様であらかじめRV決定方法が定義されてもよい。
第3の態様では、PUSCHを複数のセグメントに分割して送信を行う場合に、各セグメントに適用するオーバーヘッドに関するパラメータ(例えば、NPRB oh)について説明する。
複数のセグメントに対して同じNPRB ohを適用してもよい。例えば、UEは、PUSCHを複数のセグメントに分割して送信する場合、各セグメントに対して同じNPRB ohであると想定する。また、各セグメントに適用するNPRB ohは、分割前のPUSCH(例えば、オリジナルPUSCH)に設定されるNPRB ohであってもよい。
複数のセグメントに対して異なるNPRB ohを適用してもよい。例えば、UEは、PUSCHを複数のセグメントに分割して送信する場合、複数のセグメントのうち少なくとも2つのセグメントに対して異なるNPRB ohが設定されると想定する。また、複数のセグメントの少なくとも一つに適用するNPRB ohは、分割前のPUSCH(例えば、オリジナルPUSCH)に設定されるNPRB oh(オリジナルNPRB oh)であってもよい。
複数のセグメントに対して分割前のPUSCH(例えば、オリジナルPUSCH)に設定されるNPRB ohと異なるNPRB ohを適用してもよい。この場合、当該複数のセグメントに同一のNPRB ohを適用してもよいし、異なるNPRB ohを適用してもよい。
<オプション3-4>
複数のセグメントに対して特定のNPRB ohを適用してもよい。特定のNPRB ohは、0であってもよい。
以下、本開示の一実施形態に係る無線通信システムの構成について説明する。この無線通信システムでは、本開示の上記各実施形態に係る無線通信方法のいずれか又はこれらの組み合わせを用いて通信が行われる。
図13は、一実施形態に係る基地局の構成の一例を示す図である。基地局10は、制御部110、送受信部120、送受信アンテナ130及び伝送路インターフェース(transmission line interface)140を備えている。なお、制御部110、送受信部120及び送受信アンテナ130及び伝送路インターフェース140は、それぞれ1つ以上が備えられてもよい。
図14は、一実施形態に係るユーザ端末の構成の一例を示す図である。ユーザ端末20は、制御部210、送受信部220及び送受信アンテナ230を備えている。なお、制御部210、送受信部220及び送受信アンテナ230は、それぞれ1つ以上が備えられてもよい。
なお、上記実施形態の説明に用いたブロック図は、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。
なお、本開示において説明した用語及び本開示の理解に必要な用語については、同一の又は類似する意味を有する用語と置き換えてもよい。例えば、チャネル、シンボル及び信号(シグナル又はシグナリング)は、互いに読み替えられてもよい。また、信号はメッセージであってもよい。参照信号(reference signal)は、RSと略称することもでき、適用される標準によってパイロット(Pilot)、パイロット信号などと呼ばれてもよい。また、コンポーネントキャリア(Component Carrier(CC))は、セル、周波数キャリア、キャリア周波数などと呼ばれてもよい。
Claims (6)
- 上り共有チャネルの送信を指示する情報を受信する受信部と、
前記上り共有チャネルを複数セグメントに分割して送信する場合、少なくとも一つのセグメントに対して前記上り共有チャネルの送信用に設定される送信条件と異なる送信条件を適用するように制御する制御部と、を有することを特徴とする端末。 - 前記制御部は、前記少なくとも一つのセグメントの送信に利用する周波数リソースを、前記上り共有チャネルの送信用に設定される周波数リソースより増加するように制御することを特徴等する請求項1に記載の端末。
- 前記制御部は、前記少なくとも一つのセグメントの送信に利用する変調符号化方式及び変調次数の少なくとも一つを、前記上り共有チャネルの送信用に設定される変調符号化方式及び変調次数の少なくとも一つから変更するように制御することを特徴とする請求項1又は請求項2に記載の端末。
- 前記制御部は、前記少なくとも一つのセグメントの送信に利用する空間リソースを、前記上り共有チャネルの送信用に設定される空間リソースより増加するように制御することを特徴等する請求項1から請求項3のいずれかに記載の端末。
- 前記複数のセグメントは、異なるスロットに配置されることを特徴とする請求項1から請求項4のいずれかに記載の端末。
- 上り共有チャネルの送信を指示する情報を受信する工程と、
前記上り共有チャネルを複数セグメントに分割して送信する場合、少なくとも一つのセグメントに対して前記上り共有チャネルの送信用に設定される送信条件と異なる送信条件を適用するように制御する工程と、を有することを特徴とする無線通信方法。
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| PCT/JP2019/027420 WO2021005769A1 (ja) | 2019-07-10 | 2019-07-10 | 端末及び無線通信方法 |
| CN201980100220.2A CN114375604A (zh) | 2019-07-10 | 2019-07-10 | 终端以及无线通信方法 |
| EP19937356.4A EP3998817A4 (en) | 2019-07-10 | 2019-07-10 | TERMINAL AND WIRELESS COMMUNICATION METHOD |
| US17/625,651 US20220279549A1 (en) | 2019-07-10 | 2019-07-10 | Terminal and radio communication method |
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| KR102391121B1 (ko) * | 2014-01-29 | 2022-04-27 | 인터디지탈 패튼 홀딩스, 인크 | 커버리지 향상 무선 송신을 위한 액세스 및 링크 적응 방법 |
| US10455514B2 (en) * | 2015-07-17 | 2019-10-22 | Samsung Electronics Co., Ltd. | Method and device for transmitting signal in wireless communication system |
| CN108668368B (zh) * | 2018-04-12 | 2022-06-03 | 中兴通讯股份有限公司 | 分配调度子带的方法、装置、设备及可读存储介质 |
| WO2020091579A1 (ko) * | 2018-11-02 | 2020-05-07 | 엘지전자 주식회사 | 무선 통신 시스템에서 물리 공유 채널 상에서 데이터를 전송하는 방법 및 이를 위한 장치 |
| EP4391433A3 (en) * | 2019-01-10 | 2024-09-11 | Wilus Institute of Standards and Technology Inc. | Method for transmitting uplink shared channel in wireless communication system and device using same |
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2019
- 2019-07-10 WO PCT/JP2019/027420 patent/WO2021005769A1/ja not_active Ceased
- 2019-07-10 US US17/625,651 patent/US20220279549A1/en not_active Abandoned
- 2019-07-10 JP JP2021530441A patent/JP7337927B2/ja active Active
- 2019-07-10 EP EP19937356.4A patent/EP3998817A4/en active Pending
- 2019-07-10 CN CN201980100220.2A patent/CN114375604A/zh active Pending
Non-Patent Citations (5)
| Title |
|---|
| "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8", 3GPP TS 36.300, April 2010 (2010-04-01) |
| "PUSCH enhancement s for URLLC", 3GPP TSG RAN WG1 #98 R1-1909195, 26 August 2019 (2019-08-26), XP051765800 * |
| ERICSSON: "PUSCH enhancements for NR URLLC", 3GPP TSG RAN WG1 #97 R1-1906093, 13 May 2019 (2019-05-13), XP051727550 * |
| ETRI: "Potential enhancements to PUSCH", 3GPP TSG RAN WG1 #96 R1-1902443, 25 February 2019 (2019-02-25), XP051600139 * |
| SONY: "Considerations on PUSCH enhancements for URLLC", 3GPP TSG RAN WG1 #96 R1-1902178, 25 February 2019 (2019-02-25), XP051599873 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2021005769A1 (ja) | 2021-01-14 |
| JP7337927B2 (ja) | 2023-09-04 |
| EP3998817A4 (en) | 2023-01-18 |
| CN114375604A (zh) | 2022-04-19 |
| EP3998817A1 (en) | 2022-05-18 |
| US20220279549A1 (en) | 2022-09-01 |
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