WO2024181361A1 - 端末、無線通信方法及び基地局 - Google Patents
端末、無線通信方法及び基地局 Download PDFInfo
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- WO2024181361A1 WO2024181361A1 PCT/JP2024/006831 JP2024006831W WO2024181361A1 WO 2024181361 A1 WO2024181361 A1 WO 2024181361A1 JP 2024006831 W JP2024006831 W JP 2024006831W WO 2024181361 A1 WO2024181361 A1 WO 2024181361A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/115—Grant-free or autonomous transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1896—ARQ related signaling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Definitions
- This disclosure relates to terminals, wireless communication methods, and base stations in next-generation mobile communication systems.
- LTE Long Term Evolution
- UMTS Universal Mobile Telecommunications System
- Non-Patent Document 1 LTE-Advanced (3GPP Rel. 10-14) was specified for the purpose of achieving higher capacity and greater sophistication over LTE (Third Generation Partnership Project (3GPP (registered trademark)) Release (Rel.) 8, 9).
- LTE 5th generation mobile communication system
- 5G+ 5th generation mobile communication system
- 6G 6th generation mobile communication system
- NR New Radio
- E-UTRA Evolved Universal Terrestrial Radio Access
- E-UTRAN Evolved Universal Terrestrial Radio Access Network
- up to four layers of uplink (UL) Multi-Input Multi-Output (MIMO) transmission are supported.
- MIMO Multi-Input Multi-Output
- support for UL transmission with a number of layers greater than four is being considered to achieve higher spectral efficiency.
- maximum 6-rank transmission using 6 antenna ports, maximum 6- or 8-rank transmission using 8 antenna ports, etc. are being considered.
- one of the objectives of this disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately control UL transmissions using more than four antenna ports.
- a terminal has a receiving unit that receives setting information for transmitting a configured grant for a rank greater than 4, and a transmitting unit that transmits the configured grant based on the setting information.
- UL transmissions using more than four antenna ports can be appropriately controlled.
- FIG. 1A-1D are diagrams showing an example of special fields for validation of DCI for activation/deactivation of Type 2 CG in Rel. 17 NR.
- FIG. 2 is a diagram illustrating an example of CG setting information according to the second embodiment.
- 3A and 3B are diagrams illustrating an example of CG-UCI according to the third embodiment.
- FIG. 4 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
- FIG. 5 is a diagram illustrating an example of the configuration of a base station according to an embodiment.
- FIG. 6 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment.
- FIG. 7 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment.
- FIG. 8 is a diagram illustrating an example of a vehicle according to an embodiment.
- Dynamic grant-based transmission is UL transmission using an uplink shared channel (e.g., Physical Uplink Shared Channel (PUSCH)) in which resource allocation is dynamically instructed to a terminal (user terminal, User Equipment (UE)) by downlink control information (DCI) (UL grant).
- PUSCH Physical Uplink Shared Channel
- DCI downlink control information
- Configured grant-based transmission is UL transmission using an uplink shared channel (e.g., PUSCH) in which resource allocation is semi-statically instructed to the UE by higher layer signaling.
- PUSCH uplink shared channel
- Dynamic grant-based transmission may also be referred to as dynamic grant-based PUSCH (DG PUSCH), UL Transmission with dynamic grant, PUSCH with dynamic grant, UL Transmission with UL grant, UL grant-based transmission, UL transmission scheduled (transmission resources are set) by dynamic grant, etc.
- DG PUSCH dynamic grant-based PUSCH
- PUSCH with dynamic grant UL Transmission with UL grant
- UL grant-based transmission UL transmission scheduled (transmission resources are set) by dynamic grant, etc.
- Configured grant-based transmission may also be referred to as configured grant-based PUSCH (CG PUSCH), UL Transmission with configured grant, PUSCH with configured grant, UL Transmission without UL grant, UL grant-free transmission, UL transmission scheduled by configured grant (transmission resources are configured), UL Semi-Persistent Scheduling (SPS) transmission, etc.
- CG PUSCH configured grant-based PUSCH
- UL Transmission with configured grant PUSCH with configured grant
- PUSCH with configured grant UL Transmission without UL grant
- UL grant-free transmission UL transmission scheduled by configured grant (transmission resources are configured)
- SPS Semi-Persistent Scheduling
- configured grant (CG) and SPS may be interpreted as interchangeable.
- each of the DG and CG may be referred to as an actual UL grant.
- the actual UL grant may be higher layer signaling (e.g., Radio Resource Control (RRC) signaling), physical layer signaling (e.g., DCI for activation, described below), or a combination of these.
- RRC Radio Resource Control
- configuration information for CG (parameters used for CG transmission, which may also be called CG parameters) is configured in the UE using only higher layer signaling.
- CG configured grant type 2 transmission
- some of the CG parameters are configured in the UE by higher layer signaling.
- another part of the CG parameters may be notified to the UE by physical layer signaling (e.g., DCI for activation, described below).
- the UE may determine that one or more CGs are triggered.
- the UE may perform PUSCH transmission without a dynamic grant using the configured resources for CG PUSCH transmission (which may also be called CG resources, transmission occasions, etc.). Note that even if CG PUSCH transmission is configured, the UE may skip CG PUSCH transmission if there is no data in the transmission buffer.
- the UE may determine that one or more CGs are triggered (or activated).
- the activation signal (e.g., activation DCI) may be a DCI (PDCCH) having a Cyclic Redundancy Check (CRC) scrambled by a predetermined identifier (e.g., Configured Scheduling Radio Network Temporary Identifier (CS-RNTI)).
- a signal for deactivating a CG e.g., deactivation DCI
- deactivation DCI may be a DCI that is the same as or similar to the activation DCI. Note that deactivation may be interchangeable with release.
- the UE may determine whether to transmit PUSCH using CG resources set by a higher layer based on the activation signal.
- the UE may release (may be called release, deactivate, etc.) the resources (PUSCH) corresponding to the CG based on the deactivation signal or expiration of a predetermined timer (elapse of a predetermined time).
- the UE may transmit PUSCH without a dynamic grant using the activated CG PUSCH transmission resources (which may also be called CG resources, transmission occasions, etc.). Note that even if CG PUSCH transmission is activated (active), the UE may skip CG PUSCH transmission if there is no data in the transmission buffer.
- activated CG PUSCH transmission resources which may also be called CG resources, transmission occasions, etc.
- the UE verifies whether one or more fields included in the detected DCI have special values (special value(s)) and determines whether the DCI is for activation/deactivation of a type 2 CG.
- special value(s) special value(s)
- An example of the relationship between the one or more fields and the special values is shown in Figures 1A-1D.
- Figures 1A-1D are diagrams showing an example of special fields for validation of DCI for activation/deactivation of Type 2 CG in Rel. 17 NR.
- Figures 1A and 1B correspond to DCI for activation
- Figures 1C and 1D correspond to DCI for deactivation.
- Figures 1A and 1C correspond to the case where a UE is provided with one CG type 2 configuration in an active Bandwidth Part (BWP)
- BWP Bandwidth Part
- Figures 1B and 1D correspond to the case where a UE is provided with multiple CG type 2 configurations in an active BWP.
- FIG. 1A indicates that DCI format 0_0/0_1/0_2 may be an activation DCI if the Hybrid Automatic Repeat request (HARQ) Process Number (HPN) field (if present) is set to all '0's and the Redundancy Version (RV) field (if present) is set to all '0's.
- HARQ Hybrid Automatic Repeat request
- HPN Hybrid Automatic Repeat request
- RV Redundancy Version
- FIG. 1C indicates that DCI format 0_0/0_1/0_2 may correspond to a deactivation DCI if the HPN field (if present) is set to all '0's, the RV field (if present) is set to all '0's, the Modulation and Coding Scheme (MCS) fields are set to all '1's, and the frequency domain resource allocation field is set to all '0's or '1's.
- MCS Modulation and Coding Scheme
- FIGS 1B and 1D imply that if a UE is provided with multiple CG type 2 configurations, the HPN field is not used to validate the DCI for activation/deactivation, since the HPN field is used to indicate which of the multiple CG type 2 configurations to activate/deactivate.
- the activation/deactivation DCI has the New Data Indicator (NDI) field set to 0 for the Transport Block (TB) to be activated.
- NDI New Data Indicator
- the DCI for activation of type 2 CG indicates the MCS, but does not indicate the NDI and RV because the corresponding fields have special values as described above.
- the above-mentioned CG parameters may be configured in the UE using CG configuration information of a higher layer (e.g., a ConfiguredGrantConfig information element of the RRC layer).
- the CG parameters may include, for example, information identifying CG resources.
- the CG parameters may include, for example, information regarding a CG index, a time offset, a periodicity, etc.
- the period and the time offset may each be expressed in units of a symbol, a slot, a subframe, a frame, etc.
- the period may be indicated, for example, by a predetermined number of symbols.
- the CG parameters may be partly set by the CG configuration information and partly set by the PUSCH configuration information (e.g., the RRC information element PUSCH-Config).
- the maximum rank for the CG PUSCH may be indicated by a parameter provided by the PUSCH configuration information (e.g., the RRC parameters maxRank, maxRankDCI-0-2-r16, etc.).
- Type 1 CG information normally specified by DCI regarding DG PUSCH is set by CG configuration information.
- information equivalent to the DCI's precoding information and number of layers field, measurement reference signal (SRS) Resource Indicator (SRI) field, MCS field, and antenna port field is notified to the UE by the precodingAndNumberOfLayers field, srs-ResourceIndicator field, mcsAndTBS field, and antennaPort field, respectively, included in the CG configuration information.
- SRS measurement reference signal
- SRI Resource Indicator
- repeated transmission may be configured for the CG.
- repetition-related parameters may be configured by the CG configuration information.
- the repetition-related parameters may include, for example, an RRC parameter repK indicating the number of repeated transmissions of a transport block (TB), an RRC parameter repK-RV indicating an RV sequence to be used for repeated transmission, and an RRC parameter sequenceOffsetForRV indicating the RV offset of the start RV of the first repetition for the second resource set.
- the number of repeated transmissions may be any integer, for example, 1, 2, 4, 8, etc. If the number of repeated transmissions is n (>0), the UE may transmit one TB using n transmission opportunities.
- a CG PUSCH with a repeated transmission count greater than 1 may be called a CG PUSCH with repeated transmissions.
- a single DCI (SDCI) based Time Division Multiplexing (TDM) Multi Transmission/Reception Point (MTRP) PUSCH may be configured for the CG.
- second TRP (or second SRS resource set) related parameters may be configured by the CG configuration information. For example, precoding information for the second SRS resource set of the DCI and information equivalent to the number of layers field and SRI field may be notified to the UE by the precodingAndNumberOfLayers2 field and srs-ResourceIndicator2 field included in the CG configuration information, respectively.
- the UE may receive information regarding retransmission of the CG PUSCH via a specific DCI format (e.g., DCI format 0_1) and control the retransmission of data/control information in the CG PUSCH based on this.
- a specific DCI format e.g., DCI format 0_1
- the information regarding the retransmission may be a Downlink Feedback Information (DFI) flag field.
- DFI Downlink Feedback Information
- the DFI flag field may have a bit length of 0 or 1 bit.
- the bit length of the DFI flag field may be 1. In other cases, the bit length of the DFI flag field may be 0.
- a value of 0 in the DFI flag field may indicate activation/release of a type 2 CG, and a value of 1 in the DFI flag field may indicate CG-DFI.
- the remaining bits constituting DCI format 0_1 may be determined. Specifically, when CG-DFI is indicated to the UE, the remaining bits constituting DCI format 0_1 may include a HARQ-ACKnowledgement (HARQ-ACK) bitmap field, a Transmission Power Control (TPC) command for scheduled PUSCH field, and the like.
- the TPC command field may have a bit length of 2 bits.
- the HARQ-ACK bitmap field may have a bit length of 16 bits.
- the HARQ-ACK bitmap may correspond to the HPNs in ascending order from the Most Significant Bit (MSB) to the Least Significant Bit (LSB). Note that in this disclosure, the MSB and LSB may be interchanged.
- MSB Most Significant Bit
- LSB Least Significant Bit
- the MSB and LSB may be interchanged.
- the value of the HARQ-ACK bitmap field is 1
- an ACK may be indicated for the PUSCH/UCI of the corresponding HPN.
- a Negative ACK (NACK) may be indicated for the PUSCH/UCI of the corresponding HPN.
- the UE may transmit UCI in the CG PUSCH.
- the UCI may be called CG-based UCI or CG-specific UCI (CG-UCI).
- CG-UCI may be transmitted when the CG retransmission timer field (cg-RetransmissionTimer-r16) is set by the CG configuration information.
- the UE may terminate the TB repetition (retransmission) for HPNs for which the HARQ-ACK bitmap field indicates ACK, and may perform retransmission using the CG PUSCH for HPNs for which the HARQ-ACK bitmap field indicates NACK.
- the UE may retransmit the CG PUSCH transmission (initial transmission) at the previous CG opportunity using the CG PUSCH at the CG opportunity after the CG retransmission timer expires.
- the CG-UCI may include a specific field.
- the specific field may be at least one of an HPN field, an RV field, an NDI field, and a Channel Occupancy Time (COT) shared information field.
- the specific field indicates information such as the HPN for each CG opportunity (regarding data to be transmitted on the CG PUSCH in the CG opportunity).
- the HPN field may have a bit length of 4 bits.
- the RV field may have a bit length of 2 bits.
- the NDI field may have a bit length of 1 bit.
- the COT sharing information field may have a bit length of Ceil(log2(C)) bits when a specific upper layer parameter (e.g., ULtoDL-CO-SharingED-Threshold-r16) and other upper layer parameters (e.g., cg-COT-SharingList-r16) are set and the number of combinations set in the other upper layer parameters (e.g., cg-COT-SharingList-r16) is C.
- a specific upper layer parameter e.g., ULtoDL-CO-SharingED-Threshold-r16
- other upper layer parameters e.g., cg-COT-SharingList-r16
- the COT sharing information field may have a bit length of 1 bit when a particular upper layer parameter (e.g., ULtoDL-CO-SharingED-Threshold-r16) is not set and another upper layer parameter (e.g., cg-COT-SharingList-r16) is set. In cases other than the above two cases, the COT sharing information field may have a bit length of 0 bit.
- a particular upper layer parameter e.g., ULtoDL-CO-SharingED-Threshold-r16
- another upper layer parameter e.g., cg-COT-SharingList-r16
- the UE may jointly encode the CG-UCI and HARQ-ACK when the CG PUSCH and the uplink control channel (Physical Uplink Control Channel (PUCCH)) overlap.
- the CG-UCI multiplexing field cg-UCI-Multiplexing-r16
- the UE may jointly encode the CG-UCI and HARQ-ACK when the CG PUSCH and the uplink control channel (Physical Uplink Control Channel (PUCCH)) overlap.
- PUCCH Physical Uplink Control Channel
- CG PUSCH retransmission control based on CG-DFI/CG-UCI may be used in NR systems that use unlicensed spectrum (shared spectrum).
- precoding matrices for UL transmissions using more than four antenna ports are being considered.
- a codebook for eight-port transmission (which may be called an 8 Transmission (TX) UL codebook) is being considered.
- Rel. 15/16 NR supported the transmission of one codeword (CW) in one PUSCH
- Rel. 18 NR it is being considered that UEs will transmit more than one CW in one PUSCH.
- CW corresponds to one transport block (TB).
- the fact that dual CW is supported (or enabled) in PUSCH transmission may be notified to the UE by a predetermined upper layer parameter.
- the predetermined upper layer parameter may be an upper layer parameter (e.g., maxNrofCodeWordsScheduledByDCI) regarding the maximum number of CWs scheduled by DCI.
- the predetermined upper layer parameter e.g., maxNrofCodeWordsScheduledByDCI
- DCI formats for PUSCH scheduling up to Rel. 17 NR included fields for one CW (e.g., MCS field, NDI field, RV field, etc.).
- NR Rel. 18 for dual CW, it is being considered to include fields for two CWs (e.g., MCS field, NDI field, RV field for the second CW) in the DCI format for PUSCH scheduling.
- fields for two CWs e.g., MCS field, NDI field, RV field for the second CW
- the rank may be dynamically indicated by the DCI.
- the DCI may indicate the rank value, or indicate whether the rank is 4 or less.
- the fields e.g., MCS field, NDI field, RV field
- the fields e.g., MCS field, NDI field, RV field
- one of the two CWs may be disabled if a specific condition is met.
- the field for the second CW described above may be included only when a rank > 4 is specified, and may not be included or may be ignored when a rank ⁇ 4 is specified.
- the fields for the second CW may be indicated using existing fields.
- one or more (or all) bits of the antenna port field may be used to indicate at least one of the TRI (rank), MCS, RV, and NDI for the second CW.
- the antenna port field is 4 or 5 bits, for example, bits 1-4 may be used for PUSCH transmissions with ranks greater than 4.
- CG PUSCH with a rank greater than 4 has not been sufficiently considered.
- issues include whether or not the second CW (or second TB) is enabled/disabled (or activated/deactivated) for CG PUSCH transmission with a rank greater than 4 (e.g., CG PUSCH transmission with rank>4), how to control it if it is supported, and how to control the CG-UCI.
- the inventors therefore came up with a method for appropriately transmitting PUSCH/CG PUSCH with a rank greater than 4.
- A/B and “at least one of A and B” may be interpreted as interchangeable. Also, in this disclosure, “A/B/C” may mean “at least one of A, B, and C.”
- Radio Resource Control RRC
- RRC parameters RRC parameters
- RRC messages higher layer parameters, fields, information elements (IEs), settings, etc.
- IEs information elements
- CE Medium Access Control
- update commands activation/deactivation commands, etc.
- the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, other messages (e.g., messages from the core network such as positioning protocols (e.g., NR Positioning Protocol A (NRPPa)/LTE Positioning Protocol (LPP)) messages), or a combination of these.
- RRC Radio Resource Control
- MAC Medium Access Control
- LPP LTE Positioning Protocol
- the MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc.
- the broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.
- MIB Master Information Block
- SIB System Information Block
- RMSI Remaining Minimum System Information
- OSI System Information
- the physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), etc.
- DCI Downlink Control Information
- UCI Uplink Control Information
- TPMI and TPMI index may be interchangeable.
- TX transmission
- port antenna port, etc.
- a port/antenna port may mean a port/antenna port for UL (e.g., SRS/PUSCH) transmission.
- SRS resource set and a resource set may be interchangeable.
- a coherent group and an SRS resource set may be interchangeable.
- 8TX This disclosure mainly describes 8TX, but the same applies to 5TX, 6TX, 7TX, 8 or more TX, 4 or less TX, etc. in the same way as for 8TX.
- “8” may be read as “n (n is any integer)” and in this case, the number of layers/ports etc. described assuming the maximum value is “8” can be appropriately read as assuming the maximum value is “n” by a person skilled in the art.
- "8” is read as "n (n is any integer)"
- "4" for rank may be read as n/2 rounded off, rounded up or down to the nearest whole number.
- the application of one code word and the number of layers being four or less may be interpreted as interchangeable.
- the application of two code words and the number of layers being greater than four may be interpreted as interchangeable.
- activating (or deactivating) CG transmission may be interpreted as activating (or deactivating) at least one of CG settings, transmission based on CG settings, transmission using resources corresponding to CG settings, etc.
- the maximum rank [set by the PUSCH configuration information] may be read as the maximum number of MIMO layers (e.g., RRC parameters maxMIMO-Layers, maxMIMO-LayersDCI-0-2, etc.) [set by the PUSCH configuration information common to BWPs in the serving cell (e.g., the RRC information element PUSCH-ServingCellConfig)].
- MIMO layers e.g., RRC parameters maxMIMO-Layers, maxMIMO-LayersDCI-0-2, etc.
- the PUSCH configuration information common to BWPs in the serving cell e.g., the RRC information element PUSCH-ServingCellConfig
- the first embodiment relates to supporting CG PUSCH with rank greater than four.
- Embodiment 1.1 For CG PUSCH, ranks greater than 4 are not supported; - Embodiment 1.2: For CG PUSCH, ranks greater than 4 are supported.
- the maximum rank (e.g., RRC parameter maxRank, maxRankDCI-0-2-r16, etc.) > 4 is set by the PUSCH configuration information (e.g., RRC information element PUSCH-Config), this maximum rank does not need to be applied to the CG PUSCH. Also, in this case, the maximum rank for the CG PUSCH (e.g., RRC parameter maxRank-cg-r18) ( ⁇ 4) may be set.
- the maximum rank (e.g., RRC parameter maxRank, maxRankDCI-0-2-r16, etc.) > 4 is set by the PUSCH configuration information (e.g., RRC information element PUSCH-Config), this maximum rank may also be applied to the CG PUSCH (embodiment 1.2.1).
- the maximum rank (e.g., RRC parameter maxRank-cg-r18) ( ⁇ 8) for the CG PUSCH may be set for each CG configuration information (e.g., RRC information element ConfiguredGrantConfig), or may be set commonly for multiple or all CG configuration information (e.g., in the PUSCH configuration information or uplink BWP configuration information (e.g., BWP-UplinkDedicated information element)).
- CG configuration information e.g., RRC information element ConfiguredGrantConfig
- uplink BWP configuration information e.g., BWP-UplinkDedicated information element
- the maximum rank set by the PUSCH setting information may be referred to as the maximum rank for DG PUSCH.
- the UE may determine a rank greater than 4 for the type 1 CG PUSCH based on the precodingAndNumberOfLayers included in the CG configuration information. Also, in embodiment 1.2, the UE may determine a rank greater than 4 for the type 2 CG PUSCH based on the DCI for activation (described later in the second embodiment).
- the CG PUSCH in the first embodiment may be interpreted as at least one of the CG PUSCH, the repeated CG PUSCH, and the SDCI-based MTRP CG PUSCH. Different embodiments may be applied to each of these CG PUSCHs.
- the second embodiment relates to reporting information for the second CW of a CG PUSCH with rank greater than four.
- the CG configuration information may set a field related to the MCS for the second CW (e.g., the mcsAndTBS2 field). Note that the mcsAndTBS defined in Rel. 17 NR may be used for the first CW.
- a field regarding the RV for the first CW/second CW may be set by the CG setting information.
- the RV for the first CW and the RV (or rvid) for the second CW may be set separately by two fields, or both the RV for the first CW and the RV (or rvid) for the second CW may be indicated by one field.
- the CG configuration information does not require that the NDI fields for the first CW/second CW be set because the first transmission of the CG PUSCH transmits new data and retransmissions are dynamically scheduled.
- the UE may expect two fields related to MCS to be configured by the CG configuration information for ranks greater than 4.
- the UE may also expect two fields related to RV to be configured by the CG configuration information for ranks greater than 4.
- FIG. 2 is a diagram showing an example of CG setting information according to the second embodiment. This example is described using Abstract Syntax Notation One (ASN.1) notation. Note that this is merely an example, and it is acceptable for the description to be incomplete. In this diagram, the meaning of RRC information elements/parameters with the same names as RRC information elements/parameters already specified in NR specifications up to Rel. 17 (e.g., 3GPP TS 38.331) will naturally be understood by those skilled in the art.
- ASN.1 Abstract Syntax Notation One
- RRC information elements are not limited to this, and may be given, for example, a suffix indicating that they were introduced in a specific release (e.g., "_r18", “-r18", etc.).
- the suffix may not be added, or a different word may be added.
- the CG configuration information in FIG. 2 includes the above-mentioned mcsAndTBS2 field and fields related to the two RVs (rvForCW1 field, rvForCW2 field). Note that the locations where these fields are included are not limited to this.
- the mcsAndTBS2 field may be included outside the rrc-ConfiguredUplinkGrant, and the fields related to the two RVs may be included within the rrc-ConfiguredUplinkGrant.
- the DCI for activation/release may comply with at least one of the following (1)-(3): (1) One or two fields pertaining to the NDI (if present) are set to all '0'; (2) The activation DCI can specify whether the rank is 4 or less or greater than 4. (3) In the release DCI, the two fields related to RV and the two fields related to MCS are set to special values (e.g., the two fields related to RV are all set to '0' and the two fields related to MCS are all set to '1').
- the UE may be dynamically indicated whether the rank of the activated CG PUSCH is 4 or less or greater than 4 based on at least one of, for example, a special value of a field related to MCS/RV included in the DCI, a precoding information and number of layers field, an antenna port field, etc.
- the UE may determine that the corresponding CW (that one CW) is invalid and has a rank of 4 or less.
- the MCS may be indicated as valid by the DCI for the other of the two CWs.
- the RV related field for the other CW may be indicated as valid by the DCI or may be set to a special value (e.g., all '0' or all '1').
- MCS/RV for a CW is validly indicated (indicated) by a DCI
- this may mean that the MCS/RV is indicated by the MCS/RV-related fields of the DCI.
- the DCI for activation indicates that the rank of the CG PUSCH to be activated is greater than 4 (two CWs are available).
- Two fields related to MCS are effectively indicated by the DCI
- Two fields related to RV are effectively indicated by the DCI, -
- the DCI sets two fields related to the RV to special values (e.g., one field related to the RV is set to all '0's and the other field related to the RV is set to all '1's).
- the UE may use a predefined value as the RV (or rvid) for that CW, may use a value set by higher layer signaling, or may use a value determined based on the UE capabilities.
- a "special value" in this disclosure may be any bit string consisting of any combination of '0' and '1'.
- the UE can appropriately determine information for the second CW of a CG PUSCH with a rank greater than 4.
- Third Embodiment A third embodiment relates to supporting CG-UCI in CG PUSCH with rank greater than four.
- CG-UCI in a CG PUSCH with a rank greater than 4 may not be supported.
- the UE may not expect a CG retransmission timer to be configured if the maximum rank (or rank) configured for the CG PUSCH is greater than 4 or 2 CWs (or 2 CWs of CG PUSCH) are activated for the CG PUSCH by the DCI.
- CG-UCI in a CG PUSCH with a rank greater than 4 may be supported.
- the UE may transmit CG-UCI in a CG PUSCH with a rank greater than 4 when the CG retransmission timer is configured.
- the CG retransmission timer for a CG PUSCH with a rank greater than 4 may be set by a field relating to an existing CG retransmission timer included in the CG configuration information (cg-RetransmissionTimer-r16), or may be set by a field relating to another CG retransmission timer included in the CG configuration information (e.g., cg-RetransmissionTimer2-r18).
- the field relating to the existing CG retransmission timer may be used for retransmission control of a CG PUSCH with a rank of 4 or less, and the field relating to another CG retransmission timer may be used for retransmission control of a CG PUSCH with a rank greater than 4.
- the CG-UCI may include at least one of a second RV field for the second CW and a second NDI field for the second CW.
- the CG-UCI may include a first MCS field for the first CW/a second MCS field for the second CW.
- FIGS 3A and 3B are diagrams showing an example of CG-UCI according to the third embodiment.
- CG-UCI up to Rel. 17 NR included fields in the following order: HPN, RV, NDI, and COT shared information.
- CG-UCI according to the third embodiment may include a second RV field (if present) and a second NDI field (if present) after the NDI field as in Figure 3A, or may include a second RV field (if present) after the RV field and a second NDI field (if present) after the NDI field as in Figure 3B. Note that the order of the fields is not limited to these.
- the CG-UCI may include information indicating whether the rank is less than or equal to 4 or greater than 4.
- the information may be a new field different from an existing field, or a special value of an existing field.
- the information indicating whether the rank is less than or equal to 4 or greater than 4 may be information indicating that one CW is to be disabled (rank ⁇ 4).
- the UE can appropriately determine whether to transmit CG-UCI in the CG PUSCH.
- the fourth embodiment relates to multiplexing of CG-UCI in a CG PUSCH with a rank greater than 4 (2 CWs).
- the UE may comply with at least one of the following for multiplexing of CG-UCI in CG PUSCH of 2CW: (1) Multiplexing CG-UCI into one of the two CWs; (2) CG-UCI is multiplexed on both of the two CWs. (3) Determine whether to follow the above (1) or (2) based on the UCI or CG-UCI to be transmitted; (4) CG-UCI is multiplexed only when 1CW is enabled; (5) Repeat CG-UCI for 2 CW.
- the CW into which CG-UCI is multiplexed may be the first CW or a CW with a higher MCS.
- beta offset parameters may be applied to the two CWs.
- a beta offset parameter for CG-UCI in the first CW and a beta offset parameter for CG-UCI in the second CW may be configured in the UE.
- the former may be given by the existing betaOffsetCG-UCI-r16, and the latter may be given by a new RRC field.
- the beta offset parameter for CG-UCI may indicate an index related to the beta offset when only CG-UCI is transmitted on CG PUSCH.
- the beta offset applied may be the beta offset for HARQ-ACK.
- the "UCI or CG-UCI to be transmitted” may include at least one of the type of information to be transmitted (e.g., HARQ-ACK, Scheduling Request (SR), Channel State Information (CSI) Part 1, CSI Part 2), the size of the information to be transmitted (payload size), the content of the information to be transmitted, the priority of the information to be transmitted, and the resources to be used for the information to be transmitted.
- the type of information to be transmitted e.g., HARQ-ACK, Scheduling Request (SR), Channel State Information (CSI) Part 1, CSI Part 2
- the size of the information to be transmitted payload size
- activating one CW may mean that only one CW is activated by a DCI for activation of a CG PUSCH, or that one CW is deactivated by a DCI for deactivation of a CG PUSCH for which two CWs have been activated.
- the UE may not support joint (or simultaneous) transmission of HARQ-ACK and CG-UCI in 2CW CG PUSCH. In this case, it is not necessary to transmit either CG PUSCH or HARQ-ACK according to the rules defined in the existing NR described above.
- the UE may support joint transmission of HARQ-ACK and CG-UCI in 2CW CG PUSCH.
- the UE may jointly encode the CG-UCI and HARQ-ACK and multiplex the jointly encoded information onto the CG PUSCH according to at least one of (1)-(5) above. Otherwise, the UE may not transmit one of the overlapping CG PUSCH and HARQ-ACK according to the rules specified in the existing NR described above.
- the field related to CG-UCI multiplexing may be an existing field related to CG-UCI multiplexing (cg-UCI-Multiplexing-r16) included in the CG configuration information, or may be another field related to CG-UCI multiplexing (e.g., cg-UCI-Multiplexing-r18) included in the CG configuration information.
- the UE may also multiplex CG-UCI and HARQ-ACK into different CWs.
- the correspondence between CG-UCI/HARQ-ACK and CWs may be predefined, set by higher layer signaling, or determined based on UE capabilities.
- the UE may be notified of a setting related to a beta offset to support reporting of different information (CG-UCI/HARQ-ACK) in different CWs.
- a beta offset parameter for reporting different information (CG-UCI/HARQ-ACK) in different CWs may be set separately from the beta offset parameter for CG-UCI described above.
- the UE can appropriately determine whether to transmit CG-UCI in the CG PUSCH.
- any information may be notified to the UE (from a network (NW) (e.g., a base station (BS))) (in other words, any information is received by the UE from the BS) using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal/channel (e.g., PDCCH, PDSCH, reference signal), or a combination thereof.
- NW network
- BS base station
- the MAC CE may be identified by including a new Logical Channel ID (LCID) in the MAC subheader that is not specified in existing standards.
- LCID Logical Channel ID
- the notification may be made by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used to scramble Cyclic Redundancy Check (CRC) bits assigned to the DCI, the format of the DCI, etc.
- RNTI Radio Network Temporary Identifier
- CRC Cyclic Redundancy Check
- notification of any information to the UE in the above-mentioned embodiments may be performed periodically, semi-persistently, or aperiodically.
- notification of any information from the UE (to the NW) may be performed using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal/channel (e.g., PUCCH, PUSCH, PRACH, reference signal), or a combination thereof.
- physical layer signaling e.g., UCI
- higher layer signaling e.g., RRC signaling, MAC CE
- a specific signal/channel e.g., PUCCH, PUSCH, PRACH, reference signal
- the MAC CE may be identified by including a new LCID in the MAC subheader that is not specified in existing standards.
- the notification may be transmitted using PUCCH or PUSCH.
- notification of any information from the UE may be performed periodically, semi-persistently, or aperiodically.
- At least one of the above-mentioned embodiments may be applied when a specific condition is satisfied, which may be specified in a standard or may be notified to a UE/BS using higher layer signaling/physical layer signaling.
- At least one of the above-described embodiments may be applied only to UEs that have reported or support a particular UE capability.
- the specific UE capabilities may indicate at least one of the following: Supporting specific processing/operations/control/information for at least one of the above embodiments; Supporting 8TX UL transmissions; Support 8TX CG PUSCH transmission (Type 1/2); Supporting 8TX CG PUSCH transmission with repetition; Supporting SDCI based TDM MTRP 8TX CG PUSCH; Supporting different ranks (or maximum rank) between PUSCH and CG PUSCH; For type 2 CG, support for dynamic switching of rank (below 4 or above 4); Supporting CG-UCI in CG PUSCH with rank greater than 4; Supporting CG-UCI multiplexing in 2CW CG PUSCH; Support multiplexing of CG-UCI and HARQ-ACK in 2CW CG PUSCH.
- the above-mentioned specific UE capabilities may be capabilities that are applied across all frequencies (commonly regardless of frequency), capabilities per frequency (e.g., one or a combination of a cell, band, band combination, BWP, component carrier, etc.), capabilities per frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), capabilities per subcarrier spacing (SubCarrier Spacing (SCS)), or capabilities per Feature Set (FS) or Feature Set Per Component-carrier (FSPC).
- FR1 Frequency Range 1
- FR2 FR2, FR3, FR4, FR5, FR2-1, FR2-2
- SCS subcarrier Spacing
- FS Feature Set
- FSPC Feature Set Per Component-carrier
- the specific UE capabilities may be capabilities that are applied across all duplexing methods (commonly regardless of the duplexing method), or may be capabilities for each duplexing method (e.g., Time Division Duplex (TDD) and Frequency Division Duplex (FDD)).
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- the above-mentioned embodiments may be applied when the UE configures/activates/triggers specific information related to the above-mentioned embodiments (or performs the operations of the above-mentioned embodiments) by higher layer signaling/physical layer signaling.
- the specific information may be information indicating enabling 8TX UL transmission, information indicating enabling 8TX CG PUSCH transmission (type 1/2), any RRC parameters for a specific release (e.g., Rel. 18/19), etc.
- the UE may, for example, apply Rel. 15/16 operations.
- [Appendix 1] a receiving unit for receiving setting information for transmitting configured grants for ranks greater than 4; A terminal having a transmission unit that transmits the configured grant based on the setting information.
- the configuration information includes information indicating a maximum rank for transmitting configured grants, separate from information different from a maximum rank for transmitting dynamic grants.
- the configuration information includes a field related to a Modulation and Coding Scheme (MCS) for the second codeword or a field related to a Redundancy Version (RV) for the second codeword.
- MCS Modulation and Coding Scheme
- RV Redundancy Version
- [Appendix 1] a receiving unit for receiving setting information for transmitting configured grants for ranks greater than 4; A terminal having a control unit that controls transmission of configured grant uplink control information in the configured grant transmission based on the setting information.
- the configured grant uplink control information includes at least one of a field related to a redundancy version (RV) for the second codeword and a New Data Indicator (NDI) field for the second codeword.
- RV redundancy version
- NDI New Data Indicator
- [Appendix 3] 3. The terminal according to claim 1, wherein the control unit controls multiplexing of the configured grant uplink control information in the configured grant transmission for two codewords.
- [Appendix 4] The terminal according to any one of Supplementary Note 1 to Supplementary Note 3, wherein the control unit controls multiplexing of the configured grant uplink control information and delivery acknowledgement information in the configured grant transmission for two codewords.
- Wired communication system A configuration of a wireless communication system according to an embodiment of the present disclosure will be described below.
- communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination of these.
- the wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)).
- MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.
- RATs Radio Access Technologies
- MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.
- E-UTRA Evolved Universal Terrestrial Radio Access
- EN-DC E-UTRA-NR Dual Connectivity
- NE-DC NR-E-UTRA Dual Connectivity
- the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN).
- the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.
- the wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (e.g., dual connectivity in which both the MN and SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).
- dual connectivity in which both the MN and SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).
- gNBs NR base stations
- N-DC Dual Connectivity
- the wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are arranged within the macrocell C1 and form a small cell C2 that is narrower than the macrocell C1.
- a user terminal 20 may be located within at least one of the cells. The arrangement and number of each cell and user terminal 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.
- the user terminal 20 may be connected to at least one of the multiple base stations 10.
- the user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CC) and dual connectivity (DC).
- CA carrier aggregation
- CC component carriers
- DC dual connectivity
- 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)).
- Macro cell C1 may be included in FR1
- small cell C2 may be included in FR2.
- FR1 may be a frequency band below 6 GHz (sub-6 GHz)
- FR2 may be a frequency band above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a higher frequency band than FR2.
- the user terminal 20 may communicate 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 multiple base stations 10 may be connected by wire (e.g., optical fiber conforming to the Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (e.g., NR communication).
- wire e.g., optical fiber conforming to the Common Public Radio Interface (CPRI), X2 interface, etc.
- NR communication e.g., NR communication
- base station 11 which corresponds to the upper station
- IAB Integrated Access Backhaul
- base station 12 which corresponds to a relay station
- the base station 10 may be connected to the core network 30 directly or via another base station 10.
- the core network 30 may include at least one of, for example, an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), etc.
- EPC Evolved Packet Core
- 5GCN 5G Core Network
- NGC Next Generation Core
- the core network 30 may include network functions (Network Functions (NF)) such as, for example, a User Plane Function (UPF), an Access and Mobility management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Application Function (AF), a Data Network (DN), a Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM).
- NF Network Functions
- UPF User Plane Function
- AMF Access and Mobility management Function
- SMF Session Management Function
- UDM Unified Data Management
- AF Application Function
- DN Data Network
- LMF Location Management Function
- OAM Operation, Administration and Maintenance
- the user terminal 20 may be a terminal that supports at least one of the 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
- 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 radio access method may also be called a waveform.
- other radio access methods e.g., other single-carrier transmission methods, other multi-carrier transmission methods
- a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. may be used as the downlink channel.
- PDSCH Physical Downlink Shared Channel
- PBCH Physical Broadcast Channel
- PDCCH Physical Downlink Control Channel
- an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. may be used as an uplink channel.
- PUSCH Physical Uplink Shared Channel
- PUCCH Physical Uplink Control Channel
- PRACH Physical Random Access Channel
- SIB System Information Block
- PDSCH User data, upper layer control information, System Information Block (SIB), etc.
- SIB System Information Block
- PUSCH User data, upper layer control information, etc.
- MIB Master Information Block
- PBCH Physical Broadcast Channel
- Lower layer control information may be transmitted by the PDCCH.
- the lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information for at least one of the PDSCH and the PUSCH.
- DCI Downlink Control Information
- the DCI for scheduling the PDSCH may be called a DL assignment or DL DCI
- the DCI for scheduling the PUSCH may be called a UL grant or UL DCI.
- the PDSCH may be interpreted as DL data
- the PUSCH may be interpreted as UL data.
- a control resource set (COntrol REsource SET (CORESET)) and a search space may be used to detect the PDCCH.
- the CORESET corresponds to the resources to search for DCI.
- the search space corresponds to the search region and search method of PDCCH candidates.
- One CORESET may be associated with one or multiple search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.
- a 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. Note that the terms “search space,” “search space set,” “search space setting,” “search space set setting,” “CORESET,” “CORESET setting,” etc. in this disclosure may be read as interchangeable.
- the PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK/NACK, etc.), and a scheduling request (SR).
- UCI uplink control information
- CSI channel state information
- HARQ-ACK Hybrid Automatic Repeat reQuest ACKnowledgement
- ACK/NACK ACK/NACK
- SR scheduling request
- the PRACH may transmit a random access preamble for establishing a connection with a cell.
- downlink, uplink, etc. may be expressed without adding "link.”
- various channels may be expressed without adding "Physical” to the beginning.
- a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted.
- a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted.
- the synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).
- a signal block including an SS (PSS, SSS) and a PBCH (and a DMRS for PBCH) may be called an SS/PBCH block, an SS Block (SSB), etc.
- SS, SSB, etc. may also be called reference signals.
- a measurement reference signal Sounding Reference Signal (SRS)
- a demodulation reference signal DMRS
- UL-RS uplink reference signal
- DMRS may also be called a user equipment-specific reference signal (UE-specific Reference Signal).
- the base station 5 is a diagram showing an example of a configuration of a base station according to an embodiment.
- the base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140.
- the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140 may each be provided in one or more units.
- this example mainly shows the functional blocks of the characteristic parts of this embodiment, and the base station 10 may also be assumed to have other functional blocks necessary for wireless communication. Some 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 configured from a controller, a control circuit, etc., which are described based on a common understanding in the technical field to which this disclosure pertains.
- the control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc.
- the control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc.
- the control unit 110 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 120.
- the control unit 110 may perform call processing of communication channels (setting, release, etc.), status management of the base station 10, management of radio resources, etc.
- the transceiver 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 transceiver unit 120 may be composed of a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on a common understanding in the technical field to which the present disclosure relates.
- the transceiver unit 120 may be configured as an integrated transceiver 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 reception unit may be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.
- the transmitting/receiving antenna 130 can be configured as an antenna described based on common understanding in the technical field to which this disclosure pertains, such as an array antenna.
- the transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc.
- the transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.
- the transceiver 120 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.
- digital beamforming e.g., precoding
- analog beamforming e.g., phase rotation
- the transceiver 120 may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data and control information obtained from the control unit 110 to generate a bit string to be transmitted.
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC Medium Access Control
- HARQ retransmission control HARQ retransmission control
- the transceiver unit 120 may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.
- transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.
- channel coding which may include error correction coding
- DFT Discrete Fourier Transform
- IFFT Inverse Fast Fourier Transform
- the transceiver unit 120 may perform modulation, filtering, amplification, etc., on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 130.
- the transceiver unit 120 may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 130.
- the transceiver 120 may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.
- reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.
- FFT Fast Fourier Transform
- IDFT Inverse Discrete Fourier Transform
- filtering demapping
- demodulation which may include error correction decoding
- MAC layer processing which may include error correction decoding
- the transceiver 120 may perform measurements on the received signal.
- the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal.
- the measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc.
- RSRP Reference Signal Received Power
- RSSI Received Signal Strength Indicator
- the measurement results may be output to the control unit 110.
- the transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30 (e.g., network nodes providing NF), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.
- devices included in the core network 30 e.g., network nodes providing NF
- other base stations 10, etc. may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.
- the transmitter and receiver of the base station 10 in this disclosure may be configured with at least one of the transmitter/receiver 120, the transmitter/receiver antenna 130, and the transmission path interface 140.
- the transceiver unit 120 may transmit setting information for configured grant transmission for ranks greater than 4 to the user terminal 20.
- the transceiver unit 120 may receive the configured grant transmission performed by the user terminal 20 based on the setting information.
- the transceiver unit 120 may also transmit to the user terminal 20 setting information for configured grant transmission related to a rank greater than 4.
- the transceiver unit 120 may also receive configured grant uplink control information transmitted by the user terminal 20 in the configured grant transmission based on the setting information.
- the user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the control unit 210, the transceiver unit 220, and the transceiver antenna 230 may each include one or more.
- this example mainly shows the functional blocks of the characteristic parts of this embodiment, and the user terminal 20 may also be assumed to have other functional blocks necessary for wireless communication. Some 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 configured from a controller, a control circuit, etc., which are described based on a common understanding in the technical field to which this disclosure pertains.
- the control unit 210 may control signal generation, mapping, etc.
- the control unit 210 may control transmission and reception using the transceiver unit 220 and the transceiver antenna 230, measurement, etc.
- the control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 220.
- the transceiver unit 220 may include a baseband unit 221, 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 transceiver unit 220 may be composed of a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on a common understanding in the technical field to which the present disclosure relates.
- the transceiver unit 220 may be configured as an integrated transceiver 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 reception unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.
- the transmitting/receiving antenna 230 can be configured as an antenna described based on common understanding in the technical field to which this disclosure pertains, such as an array antenna.
- the transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc.
- the transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.
- the transceiver 220 may form at least one of the transmit beam and receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.
- digital beamforming e.g., precoding
- analog beamforming e.g., phase rotation
- the transceiver 220 may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on the data and control information acquired from the controller 210, and generate a bit string to be transmitted.
- RLC layer processing e.g., RLC retransmission control
- MAC layer processing e.g., HARQ retransmission control
- the transceiver 220 may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.
- transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.
- Whether or not to apply DFT processing may be based on the settings of transform precoding.
- the transceiver unit 220 transmission processing unit 2211
- the transceiver unit 220 may perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform, and when transform precoding is not enabled, it is not necessary to perform DFT processing as the above-mentioned transmission processing.
- the transceiver unit 220 may perform modulation, filtering, amplification, etc., on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 230.
- the transceiver unit 220 may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 230.
- the transceiver 220 may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.
- reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.
- the transceiver 220 may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal.
- the measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc.
- the measurement results may be output to the control unit 210.
- the measurement unit 223 may derive channel measurements for CSI calculation based on channel measurement resources.
- the channel measurement resources may be, for example, non-zero power (NZP) CSI-RS resources.
- the measurement unit 223 may derive interference measurements for CSI calculation based on interference measurement resources.
- the interference measurement resources may be at least one of NZP CSI-RS resources for interference measurement, CSI-Interference Measurement (IM) resources, etc.
- CSI-IM may be called CSI-Interference Management (IM) or may be interchangeably read as Zero Power (ZP) CSI-RS.
- CSI-RS, NZP CSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc. may be read as interchangeable.
- the transmitting unit and receiving unit of the user terminal 20 in this disclosure may be configured by at least one of the transmitting/receiving unit 220 and the transmitting/receiving antenna 230.
- the transceiver unit 220 may receive setting information (e.g., CG setting information) for transmitting a configured grant for a rank greater than 4.
- the transceiver unit 220 may transmit the configured grant (e.g., CG PUSCH transmission) based on the setting information.
- the configuration information may include information indicating the maximum rank for transmitting the configured grant (e.g., RRC parameter maxRank-cg-r18) that is separate from information indicating the maximum rank for transmitting dynamic grants (e.g., RRC parameters maxRank, maxRankDCI-0-2-r16, etc.).
- RRC parameter maxRank-cg-r18 information indicating the maximum rank for transmitting the configured grant
- dynamic grants e.g., RRC parameters maxRank, maxRankDCI-0-2-r16, etc.
- the configuration information may include a field related to a Modulation and Coding Scheme (MCS) for the second codeword or a field related to a Redundancy Version (RV) for the second codeword.
- MCS Modulation and Coding Scheme
- RV Redundancy Version
- the downlink control information (e.g., DCI for activation of a type 2 CG) that activates the configured grant transmission may include information indicating whether the rank of the configured grant transmission is less than or equal to 4 or greater than 4.
- the transceiver unit 220 may also receive setting information (e.g., CG setting information) for configured grant transmission related to a rank greater than 4.
- the control unit 210 may control the transmission of configured grant uplink control information (e.g., CG-UCI) in the configured grant transmission (e.g., CG PUSCH transmission) based on the setting information.
- configured grant uplink control information e.g., CG-UCI
- the configured grant uplink control information may include at least one of a field related to a redundancy version (RV) for the second codeword and a New Data Indicator (NDI) field for the second codeword.
- RV redundancy version
- NDI New Data Indicator
- the control unit 210 may control the multiplexing of the configured grant uplink control information in the configured grant transmission for the two code words.
- the control unit 210 may control the multiplexing of the configured grant uplink control information and delivery confirmation information (e.g., HARQ-ACK) in the configured grant transmission for two code words.
- delivery confirmation information e.g., HARQ-ACK
- each functional block may be realized using one device that is physically or logically coupled, or may be realized using two or more devices that are physically or logically separated and directly or indirectly connected (for example, using wires, wirelessly, etc.).
- the functional blocks may be realized by combining the one device or the multiple devices with software.
- the functions include, but are not limited to, judgement, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment.
- a functional block (component) that performs the transmission function may be called a transmitting unit, a transmitter, and the like. In either case, as mentioned above, there are no particular limitations on the method of realization.
- a base station, a user terminal, etc. in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
- FIG. 7 is a diagram showing an example of the hardware configuration of a base station and a user terminal according to one embodiment.
- the above-mentioned base station 10 and user terminal 20 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, etc.
- the terms apparatus, circuit, device, section, unit, etc. may be interpreted as interchangeable.
- the hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figures, or may be configured to exclude some of the devices.
- processor 1001 may be implemented by one or more chips.
- the functions of the base station 10 and the user terminal 20 are realized, for example, by loading specific software (programs) onto hardware such as the processor 1001 and memory 1002, causing the processor 1001 to perform calculations, control communications via the communication device 1004, and control at least one of the reading and writing of data in the memory 1002 and storage 1003.
- the processor 1001 for example, runs an operating system to control the entire computer.
- the processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, etc.
- CPU central processing unit
- control unit 110 210
- transmission/reception unit 120 220
- etc. may be realized by the processor 1001.
- the processor 1001 also reads out programs (program codes), software modules, 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.
- the programs used are those that cause a computer to execute at least some of the operations described in the above embodiments.
- the control unit 110 (210) may be realized by a control program stored in the memory 1002 and running on the processor 1001, and similar implementations may be made for other functional blocks.
- Memory 1002 is a computer-readable recording medium and may be composed of at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), and other suitable storage media. Memory 1002 may also be called a register, cache, main memory, etc. Memory 1002 can store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to one embodiment of the present disclosure.
- ROM Read Only Memory
- EPROM Erasable Programmable ROM
- EEPROM Electrically EPROM
- RAM Random Access Memory
- Memory 1002 may also be called a register, cache, main memory, etc.
- Memory 1002 can store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to one embodiment of the present disclosure.
- Storage 1003 is a computer-readable recording medium and may be composed of at least one of a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray disk), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage medium.
- Storage 1003 may also be referred to as an auxiliary storage device.
- the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called, for example, a network device, a network controller, a network card, a communication module, etc.
- the communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD).
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- the above-mentioned transmitting/receiving unit 120 (220), transmitting/receiving antenna 130 (230), etc. may be realized by the communication device 1004.
- the transmitting/receiving unit 120 (220) may be implemented as a transmitting unit 120a (220a) and a receiving unit 120b (220b) that are physically or logically separated.
- the input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside.
- the output device 1006 is an output device (e.g., a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that outputs to the outside.
- the input device 1005 and the output device 1006 may be integrated into one structure (e.g., a touch panel).
- each device such as the processor 1001 and memory 1002 is connected by a bus 1007 for communicating information.
- the bus 1007 may be configured using a single bus, or may be configured using different buses between each device.
- the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using the hardware.
- the processor 1001 may be implemented using at least one of these pieces of hardware.
- a channel, a symbol, and a signal may be read as mutually interchangeable.
- a signal may also be a message.
- a reference signal may be abbreviated as RS, and may be called a pilot, a pilot signal, or the like depending on the applied standard.
- a component carrier may also be called a cell, a frequency carrier, a carrier frequency, or the like.
- a radio frame may be composed of one or more periods (frames) in the time domain.
- Each of the one or more periods (frames) constituting a radio frame may be called a subframe.
- a subframe may be composed of one or more slots in the time domain.
- a subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.
- the numerology may be a communication parameter that is applied to at least one of the transmission and reception of a signal or channel.
- the numerology may indicate, for example, at least one of the following: SubCarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame configuration, a specific filtering process performed by the transceiver in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.
- SCS SubCarrier Spacing
- TTI Transmission Time Interval
- radio frame configuration a specific filtering process performed by the transceiver in the frequency domain
- a specific windowing process performed by the transceiver in the time domain etc.
- a slot may consist of one or more symbols in the time domain (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.).
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier Frequency Division Multiple Access
- a slot may also be a time unit based on numerology.
- a slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot.
- a PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A.
- a PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.
- a radio frame, subframe, slot, minislot, and symbol all represent time units when transmitting a signal.
- a different name may be used for radio frame, subframe, slot, minislot, and symbol. Note that the time units such as frame, subframe, slot, minislot, and symbol in this disclosure may be read as interchangeable.
- one subframe may be called a TTI
- multiple consecutive subframes may be called a TTI
- one slot or one minislot may be called a TTI.
- at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms.
- the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.
- TTI refers to, for example, the smallest time unit for scheduling in wireless communication.
- a base station schedules each user terminal by allocating radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) in TTI units.
- radio resources such as frequency bandwidth and transmission power that can be used by each user terminal
- the TTI may be a transmission time unit for a channel-coded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc.
- the time interval e.g., the number of symbols
- the time interval in which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.
- one or more TTIs may be the minimum time unit of scheduling.
- the number of slots (minislots) that constitute the minimum time unit of scheduling may be controlled.
- a TTI having a time length of 1 ms may be called a normal TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
- a TTI shorter than a normal TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
- a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms
- a short TTI e.g., a shortened TTI, etc.
- TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.
- a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
- the number of subcarriers included in an RB may be the same regardless of numerology, and may be, for example, 12.
- the number of subcarriers included in an RB may be determined based on numerology.
- an RB may include one or more symbols in the time domain and may be one slot, one minislot, one subframe, or one TTI in length.
- One TTI, one subframe, etc. may each be composed of one or more resource blocks.
- one or more RBs may be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.
- PRB Physical RB
- SCG sub-carrier Group
- REG resource element group
- PRB pair an RB pair, etc.
- a resource block may be composed of one or more resource elements (REs).
- REs resource elements
- one RE may be a radio resource area of one subcarrier and one symbol.
- a Bandwidth Part which may also be referred to as partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by an index of the RB relative to a common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within the BWP.
- the BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL).
- BWP UL BWP
- BWP for DL DL BWP
- One or more BWPs may be configured for a UE within one carrier.
- At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
- BWP bitmap
- radio frames, subframes, slots, minislots, and symbols are merely examples.
- the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, as well as the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.
- the information, parameters, etc. described in this disclosure may be represented using absolute values, may be represented using relative values from a predetermined value, or may be represented using other corresponding information.
- a radio resource may be indicated by a predetermined index.
- the names used for parameters, etc. in this disclosure are not limiting in any respect. Furthermore, the formulas, etc. using these parameters may differ from those explicitly disclosed in this disclosure.
- the various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting in any respect.
- the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
- the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.
- information, signals, etc. may be output from a higher layer to a lower layer and/or from a lower layer to a higher layer.
- Information, signals, etc. may be input/output via multiple network nodes.
- Input/output information, signals, etc. may be stored in a specific location (e.g., memory) or may be managed using a management table. Input/output information, signals, etc. may be overwritten, updated, or added to. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.
- a specific location e.g., memory
- Input/output information, signals, etc. may be overwritten, updated, or added to.
- Output information, signals, etc. may be deleted.
- Input information, signals, etc. may be transmitted to another device.
- the notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods.
- the notification of information in this disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB)), etc.), Medium Access Control (MAC) signaling), other signals, or a combination of these.
- 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 called Layer 1/Layer 2 (L1/L2) control information (L1/L2 control signal), L1 control information (L1 control signal), etc.
- the RRC signaling may be called an RRC message, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.
- the MAC signaling may be notified, for example, using a MAC Control Element (CE).
- CE MAC Control Element
- notification of specified information is not limited to explicit notification, but may be implicit (e.g., by not notifying the specified information or by notifying other information).
- the determination may be based on a value represented by a single bit (0 or 1), a Boolean value represented by true or false, or a comparison of numerical values (e.g., with a predetermined value).
- Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
- Software, instructions, information, etc. may also be transmitted and received via a transmission medium.
- a transmission medium For example, if the software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and/or wireless technologies (such as infrared, microwave, etc.), then at least one of these wired and wireless technologies is included within the definition of a transmission medium.
- wired technologies such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)
- wireless technologies such as infrared, microwave, etc.
- Network may refer to the devices included in the network (e.g., base stations).
- the antenna port may be interchangeably read as an antenna port for any signal/channel (e.g., a demodulation reference signal (DMRS) port).
- the resource may be interchangeably read as a resource for any signal/channel (e.g., a reference signal resource, an SRS resource, etc.).
- the resource may include time/frequency/code/space/power resources.
- the spatial domain transmission filter may include at least one of a spatial domain transmission filter and a spatial domain reception filter.
- the above groups may include, for example, at least one of a spatial relationship group, a Code Division Multiplexing (CDM) group, a Reference Signal (RS) group, a Control Resource Set (CORESET) group, a PUCCH group, an antenna port group (e.g., a DMRS port group), a layer group, a resource group, a beam group, an antenna group, a panel group, etc.
- CDM Code Division Multiplexing
- RS Reference Signal
- CORESET Control Resource Set
- beam SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, codeword (CW), transport block (TB), RS, etc. may be interpreted as interchangeable.
- TCI state downlink TCI state
- DL TCI state downlink TCI state
- UL TCI state uplink TCI state
- unified TCI state common TCI state
- joint TCI state etc.
- QCL QCL
- QCL assumptions QCL relationship
- QCL type information QCL property/properties
- specific QCL type e.g., Type A, Type D
- specific QCL type e.g., Type A, Type D
- index identifier
- indicator indication, resource ID, etc.
- sequence list, set, group, cluster, subset, etc.
- TCI state ID may be interchangeable.
- TCI state ID may be interchangeable as “set of spatial relationship information (TCI state)", “one or more pieces of spatial relationship information”, etc.
- TCI state and TCI may be interchangeable.
- Spatial relationship information and spatial relationship may be interchangeable.
- Base Station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.
- a base station can accommodate one or more (e.g., three) cells.
- a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services by a base station subsystem (e.g., a small base station for indoor use (Remote Radio Head (RRH))).
- RRH Remote Radio Head
- the term "cell” or “sector” refers to a part or the entire coverage area of at least one of the base station and base station subsystems that provide communication services in this coverage.
- a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control/operate based on the information.
- MS Mobile Station
- UE User Equipment
- a mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
- At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc.
- at least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.
- the moving body in question refers to an object that can move, and the moving speed is arbitrary, and of course includes the case where the moving body is stationary.
- the moving body in question includes, but is not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcarts, rickshaws, ships and other watercraft, airplanes, rockets, artificial satellites, drones, multicopters, quadcopters, balloons, and objects mounted on these.
- the moving body in question may also be a moving body that moves autonomously based on an operating command.
- the moving object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned moving object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned).
- a vehicle e.g., a car, an airplane, etc.
- an unmanned moving object e.g., a drone, an autonomous vehicle, etc.
- a robot manned or unmanned
- at least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations.
- 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
- FIG. 8 is a diagram showing an example of a vehicle according to an embodiment.
- the vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.
- various sensors including a current sensor 50, a rotation speed sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58
- an information service unit 59 including a communication module 60.
- the drive unit 41 is composed of at least one of an engine, a motor, and a hybrid of an engine and a motor, for example.
- the steering unit 42 includes at least a steering wheel (also called a handlebar), and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.
- the electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (e.g., an Input/Output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle.
- the electronic control unit 49 may also be called an Electronic Control Unit (ECU).
- ECU Electronic Control Unit
- Signals from the various sensors 50-58 include a current signal from a current sensor 50 that senses the motor current, a rotation speed signal of the front wheels 46/rear wheels 47 acquired by a rotation speed sensor 51, an air pressure signal of the front wheels 46/rear wheels 47 acquired by an air pressure sensor 52, a vehicle speed signal acquired by a vehicle speed sensor 53, an acceleration signal acquired by an acceleration sensor 54, a depression amount signal of the accelerator pedal 43 acquired by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 acquired by a brake pedal sensor 56, an operation signal of the shift lever 45 acquired by a shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by an object detection sensor 58.
- the information service unit 59 is composed of various devices, such as a car navigation system, audio system, speakers, displays, televisions, and radios, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs that control these devices.
- the information service unit 59 uses information acquired from external devices via the communication module 60, etc., to provide various information/services (e.g., multimedia information/multimedia services) to the occupants of the vehicle 40.
- various information/services e.g., multimedia information/multimedia services
- the information service unit 59 may include input devices (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accept input from the outside, and may also include output devices (e.g., a display, a speaker, an LED lamp, a touch panel, etc.) that perform output to the outside.
- input devices e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.
- output devices e.g., a display, a speaker, an LED lamp, a touch panel, etc.
- the driving assistance system unit 64 is composed of various devices that provide functions for preventing accidents and reducing the driver's driving load, such as a millimeter wave radar, a Light Detection and Ranging (LiDAR), a camera, a positioning locator (e.g., a Global Navigation Satellite System (GNSS)), map information (e.g., a High Definition (HD) map, an Autonomous Vehicle (AV) map, etc.), a gyro system (e.g., an Inertial Measurement Unit (IMU), an Inertial Navigation System (INS), etc.), an Artificial Intelligence (AI) chip, and an AI processor, and one or more ECUs that control these devices.
- the driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize a driving assistance function or an autonomous driving function.
- the communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63.
- the communication module 60 transmits and receives data (information) via the communication port 63 between the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58 that are provided on the vehicle 40.
- the communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication.
- the communication module 60 may be located either inside or outside the electronic control unit 49.
- the external device may be, for example, the above-mentioned base station 10 or user terminal 20.
- the communication module 60 may also be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (it may function as at least one of the base station 10 and user terminal 20).
- the communication module 60 may transmit at least one of the signals from the various sensors 50-58 described above input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication.
- the electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be referred to as input units that accept input.
- the PUSCH transmitted by the communication module 60 may include information based on the above input.
- the communication module 60 receives various information (traffic information, signal information, vehicle distance information, etc.) transmitted from an external device and displays it on an information service unit 59 provided in the vehicle.
- the information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 60).
- the communication module 60 also stores various information received from external devices in memory 62 that can be used by the microprocessor 61. Based on the information stored in memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided on the vehicle 40.
- the base station in the present disclosure may be read as a user terminal.
- each aspect/embodiment of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
- the user terminal 20 may be configured to have the functions of the base station 10 described above.
- terms such as "uplink” and "downlink” may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink").
- the uplink channel, downlink channel, etc. may be read as the sidelink channel.
- the user terminal in this disclosure may be interpreted as a base station.
- the base station 10 may be configured to have the functions of the user terminal 20 described above.
- operations that are described as being performed by a base station may in some cases also be performed by its upper node.
- a network that includes one or more network nodes having base stations, it is clear that various operations performed for communication with terminals may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME) or a Serving-Gateway (S-GW)), or a combination of these.
- MME Mobility Management Entity
- S-GW Serving-Gateway
- each aspect/embodiment described in this disclosure may be used alone, in combination, or switched between depending on the implementation.
- the processing procedures, sequences, flow charts, etc. of each aspect/embodiment described in this disclosure may be rearranged as long as there is no inconsistency.
- the methods described in this disclosure present elements of various steps using an 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
- 4th generation mobile communication system 4th generation mobile communication system
- 5G 5th generation mobile communication system
- 6G 6th generation mobile communication system
- xG x is, for example, an integer or decimal
- Future Radio Access FX
- GSM Global System for Mobile communications
- CDMA2000 Code Division Multiple Access
- UMB Ultra Mobile Broadband
- IEEE 802.11 Wi-Fi
- IEEE 802.16 WiMAX (registered trademark)
- IEEE 802.20 Ultra-WideBand (UWB), Bluetooth (registered trademark), and other appropriate wireless communication methods, as well as next-generation systems that are expanded, modified,
- the phrase “based on” does not mean “based only on,” unless expressly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
- any reference to an element using a designation such as "first,” “second,” etc., used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and second element does not imply that only two elements may be employed or that the first element must precede the second element in some way.
- determining may encompass a wide variety of actions. For example, “determining” may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking in a table, database, or other data structure), ascertaining, etc.
- Determining may also be considered to mean “determining” receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in a memory), etc.
- judgment (decision) may be considered to mean “judging (deciding)” resolving, selecting, choosing, establishing, comparing, etc.
- judgment (decision) may be considered to mean “judging (deciding)” some kind of action.
- judgment (decision) may be interpreted interchangeably with the actions described above.
- expect may be read as “be expected”.
- "expect(s)" ("" may be expressed, for example, as a that clause, a to infinitive, etc.) may be read as “be expected".
- "does not expect" may be read as "be not expected".
- "An apparatus A is not expected" may be read as "An apparatus B other than apparatus A does not expect" (for example, if apparatus A is a UE, apparatus B may be a base station).
- the "maximum transmit power" referred to in this disclosure may mean the maximum value of transmit power, may mean the nominal UE maximum transmit power, or may mean the rated UE maximum transmit power.
- connection and “coupled,” or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” to each other.
- the coupling or connection between the elements may be physical, logical, or a combination thereof. For example, "connected” may be read as "accessed.”
- a and B are different may mean “A and B are different from each other.”
- the term may also mean “A and B are each different from C.”
- Terms such as “separate” and “combined” may also be interpreted in the same way as “different.”
- timing, time, duration, time instance, any time unit e.g., slot, subslot, symbol, subframe
- period occasion, resource, etc.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
Description
NRのUL送信について、動的グラントベースド送信(dynamic grant based transmission)及び設定グラントベースド送信(configured grant based transmission)がある。
なお、Rel.15 NRでは、タイプ1CG/タイプ2CG PUSCHについて、再送はDGによってスケジュールされ、CG PUSCH上で再送を行うことができなかったが、Rel.16以降では、CG PUSCHにおける再送(CGリソースにおける再送)がサポートされた。
Rel.15/16 NRでは、4レイヤまでの上りリンク(Uplink(UL))Multi Input Multi Output(MIMO)送信がサポートされる。将来の無線通信システムについて、より高いスペクトル効率を実現するために、4より大きいレイヤ数のUL送信をサポートすることが検討されている。例えば、Rel.18 NRに向けて、6アンテナポートを用いた最大6ランク送信、8アンテナポートを用いた最大6又は8ランク送信などが検討されている。
<第1の実施形態>
第1の実施形態は、ランクが4より大きいCG PUSCHのサポートに関する。
・実施形態1.1:CG PUSCHのために、4より大きいランクはサポートされない、
・実施形態1.2:CG PUSCHのために、4より大きいランクはサポートされる。
第2の実施形態は、ランクが4より大きいCG PUSCHの第2のCWのための情報の通知に関する。
(1)NDIに関する1つ又は2つのフィールドは、(存在する場合)すべて‘0’にセットされる、
(2)アクティベーション用DCIは、ランクが4以下か4より大きいかを指定できる、
(3)リリース用DCIは、RVに関する2つのフィールド及びMCSに関する2つのフィールドが特別な値にセットされる(例えば、RVに関する2つのフィールドが全て‘0’にセットされ、MCSに関する2つのフィールドが全て‘1’にセットされる)。
・当該DCIによってMCSに関する2つのフィールドが有効に指示される、
・当該DCIによってRVに関する2つのフィールドが有効に指示される、
・当該DCIによってRVに関する2つのフィールドが特別な値にセットされる(例えば、RVに関する一方のフィールドが全て‘0’にセットされ、RVに関する他方のフィールドが全て‘1’にセットされる)。
第3の実施形態は、ランクが4より大きいCG PUSCHにおけるCG-UCIのサポートに関する。
第4の実施形態は、ランクが4より大きい(2CWの)CG PUSCHにおけるCG-UCIの多重に関する。
(1)2CWのうちの1CWに、CG-UCIを多重する、
(2)2CWの両方に、CG-UCIを多重する、
(3)上記(1)に従うか(2)に従うかを、送信するUCI又はCG-UCIに基づいて決定する、
(4)1CWが有効化される場合にのみ、CG-UCIを多重する、
(5)2CWにわたって、CG-UCIを繰り返す。
[UEへの情報の通知]
上述の実施形態における(ネットワーク(Network(NW))(例えば、基地局(Base Station(BS)))から)UEへの任意の情報の通知(言い換えると、UEにおけるBSからの任意の情報の受信)は、物理レイヤシグナリング(例えば、DCI)、上位レイヤシグナリング(例えば、RRCシグナリング、MAC CE)、特定の信号/チャネル(例えば、PDCCH、PDSCH、参照信号)、又はこれらの組み合わせを用いて行われてもよい。
上述の実施形態におけるUEから(NWへ)の任意の情報の通知(言い換えると、UEにおけるBSへの任意の情報の送信/報告)は、物理レイヤシグナリング(例えば、UCI)、上位レイヤシグナリング(例えば、RRCシグナリング、MAC CE)、特定の信号/チャネル(例えば、PUCCH、PUSCH、PRACH、参照信号)、又はこれらの組み合わせを用いて行われてもよい。
上述の実施形態の少なくとも1つは、特定の条件を満たす場合に適用されてもよい。当該特定の条件は、規格において規定されてもよいし、上位レイヤシグナリング/物理レイヤシグナリングを用いてUE/BSに通知されてもよい。
・上記実施形態の少なくとも1つについての特定の処理/動作/制御/情報をサポートすること、
・8TX UL送信をサポートすること、
・8TX CG PUSCH送信(タイプ1/2)をサポートすること、
・繰り返しありの8TX CG PUSCH送信をサポートすること、
・SDCIベースドTDM MTRP 8TX CG PUSCHをサポートすること、
・PUSCH及びCG PUSCH間で異なるランク(又は最大ランク)をサポートすること、
・タイプ2CGについて、ランク(が4以下か4より大きいか)の動的な切り替えをサポートすること、
・ランクが4より大きいCG PUSCHにおけるCG-UCIをサポートすること、
・2CWのCG PUSCHにおけるCG-UCI多重をサポートすること、
・2CWのCG PUSCHにおけるCG-UCIとHARQ-ACKとの多重をサポートすること。
本開示の一実施形態に関して、以下の発明を付記する。
[付記1]
4より大きいランクに関するコンフィギュアドグラント送信のための設定情報を受信する受信部と、
前記設定情報に基づいて前記コンフィギュアドグラント送信を行う送信部と、を有する端末。
[付記2]
前記設定情報は、動的グラント送信のための最大ランクとは異なる情報とは別の、前記コンフィギュアドグラント送信のための最大ランクを示す情報を含む付記1に記載の端末。
[付記3]
前記設定情報は、第2のコードワードのための変調及び符号化方式(Modulation and Coding Scheme(MCS))に関するフィールド又は前記第2のコードワードのための冗長バージョン(Redundancy Version(RV))に関するフィールドを含む付記1又は付記2に記載の端末。
[付記4]
前記コンフィギュアドグラント送信をアクティベートする下りリンク制御情報は、前記コンフィギュアドグラント送信のランクが4以下か4より大きいかを示す情報を含む付記1から付記3のいずれかに記載の端末。
本開示の一実施形態に関して、以下の発明を付記する。
[付記1]
4より大きいランクに関するコンフィギュアドグラント送信のための設定情報を受信する受信部と、
前記設定情報に基づいて、前記コンフィギュアドグラント送信におけるコンフィギュアドグラント上りリンク制御情報の送信を制御する制御部と、を有する端末。
[付記2]
前記コンフィギュアドグラント上りリンク制御情報は、第2のコードワードのための冗長バージョン(Redundancy Version(RV))に関するフィールド及び第2のコードワードのための新規データインディケーター(New Data Indicator(NDI))フィールドの少なくとも一方を含む付記1に記載の端末。
[付記3]
前記制御部は、2つのコードワードについての前記コンフィギュアドグラント送信における前記コンフィギュアドグラント上りリンク制御情報の多重を制御する付記1又は付記2に記載の端末。
[付記4]
前記制御部は、2つのコードワードについての前記コンフィギュアドグラント送信における前記コンフィギュアドグラント上りリンク制御情報及び送達確認情報の多重を制御する付記1から付記3のいずれかに記載の端末。
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5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6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)
- 4より大きいランクに関するコンフィギュアドグラント送信のための設定情報を受信する受信部と、
前記設定情報に基づいて前記コンフィギュアドグラント送信を行う送信部と、を有する端末。 - 前記設定情報は、動的グラント送信のための最大ランクを示す情報とは別の、前記コンフィギュアドグラント送信のための最大ランクを示す情報を含む請求項1に記載の端末。
- 前記設定情報は、第2のコードワードのための変調及び符号化方式(Modulation and Coding Scheme(MCS))に関するフィールド又は前記第2のコードワードのための冗長バージョン(Redundancy Version(RV))に関するフィールドを含む請求項1に記載の端末。
- 前記コンフィギュアドグラント送信をアクティベートする下りリンク制御情報は、前記コンフィギュアドグラント送信のランクが4以下か4より大きいかを示す情報を含む請求項1に記載の端末。
- 4より大きいランクに関するコンフィギュアドグラント送信のための設定情報を受信するステップと、
前記設定情報に基づいて前記コンフィギュアドグラント送信を行うステップと、を有する端末の無線通信方法。 - 4より大きいランクに関するコンフィギュアドグラント送信のための設定情報を端末に送信する送信部と、
前記設定情報に基づいて前記端末によって行われる前記コンフィギュアドグラント送信を受信する受信部と、を有する基地局。
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