WO2024209693A1 - 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
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
- NR future wireless communication systems
- user terminals terminals, user terminals, User Equipment (UE)
- QCL quasi-co-location
- TCI Transmission Configuration Indication
- one of the objectives of this disclosure is to provide a terminal, a wireless communication method, and a base station that appropriately controls the power of UL signals.
- a terminal has a receiver that receives settings related to Transmission Configuration Indication (TCI) states applicable to multiple signals and a first physical uplink control channel (PUCCH) transmission power parameter associated with the TCI state indicated by absolute power, and a controller that performs PUCCH transmission power control based on the first PUCCH transmission power parameter.
- TCI Transmission Configuration Indication
- PUCCH physical uplink control channel
- the power of the UL signal can be appropriately controlled.
- FIG. 1 shows an example of an SRS resource set configuration information element.
- FIG. 2 shows an example of an SRS resource configuration information element.
- FIG. 3 shows an example of parameter association for SRS.
- FIG. 4 shows an example of a band for SRS frequency hopping.
- FIG. 5 shows an example of SRS frequency hopping.
- FIG. 6 shows another example of SRS frequency hopping.
- 7 shows an example of a table showing the relationship between the number of transmission combs K TC and the maximum number of cyclic shifts of the SRS n SRS CS,max in Rel.
- FIG. 8 shows an example of a table indicating the number of transmission combs K TC and the cyclic shift value n SRS CS,i of the SRS when the number of SRS ports N ap SRS is 2.
- FIG. 9 shows an example of a table indicating the number of transmission combs K TC and the cyclic shift value n SRS CS,i of the SRS when the number of SRS ports N ap SRS is four.
- 10A and 10B show an example of a unified/common TCI framework.
- 11A and 11B show an example of DCI-based TCI status indication.
- FIG. 12 is a diagram illustrating an example of RRC parameters for UL power control.
- FIG. 13 is a diagram showing an example of transmission power parameters according to option 1-1.
- FIG. 14 is a diagram showing an example of transmission power parameters according to option 1-2.
- FIG. 15 is a diagram showing an example of transmission power parameters according to options 1-3.
- FIG. 16 is a diagram showing an example of transmission power parameters according to options 1-4.
- FIG. 17 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
- FIG. 18 is a diagram illustrating an example of the configuration of a base station according to an embodiment.
- FIG. 19 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment.
- FIG. 20 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment.
- FIG. 21 is a diagram illustrating an example of a vehicle according to an embodiment.
- SRS sounding reference signal
- NR the use of the sounding reference signal (SRS) for measurement is diverse.
- the SRS of NR is used not only for CSI measurement of the uplink (UL) used in the existing LTE (LTE Rel. 8-14), but also for CSI measurement of the downlink (DL), beam management, etc.
- the UE may be configured with one or more SRS resources.
- the SRS resources may be identified by an SRS Resource Index (SRI).
- SRI SRS Resource Index
- Each SRS resource may have one or more SRS ports (corresponding to one or more SRS ports).
- the number of ports per SRS may be 1, 2, 4, etc.
- the UE may be configured with one or more SRS resource sets.
- One SRS resource set may be associated with a predetermined number of SRS resources.
- the UE may use common upper layer parameters for the SRS resources included in one SRS resource set. Note that the resource set in this disclosure may be interpreted as a set, a resource group, a group, etc.
- Information regarding the SRS resource or resource set may be configured in the UE using higher layer signaling, physical layer signaling, or a combination of both.
- the SRS configuration information element may include an SRS resource set configuration information element ( Figure 1), an SRS resource configuration information element ( Figure 2), etc.
- the SRS resource set configuration information element may include an SRS resource set ID (Identifier) (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, an SRS resource type (resourceType), and information on the SRS usage.
- SRS-ResourceSetId an SRS resource set ID (Identifier)
- SRS-ResourceId a list of SRS resource IDs (SRS-ResourceId) used in the resource set
- SRS resourceType SRS resource type
- the SRS resource type may indicate the time domain behavior of the SRS resource configuration, and may indicate any of periodic SRS (P-SRS), semi-persistent SRS (SP-SRS), and aperiodic SRS (A(AP)-SRS).
- P-SRS periodic SRS
- SP-SRS semi-persistent SRS
- A(AP)-SRS aperiodic SRS
- the UE may transmit P-SRS and SP-SRS periodically (or periodically after activation).
- the UE may transmit A-SRS based on an SRS request in the DCI.
- the use of the SRS may be, for example, beam management, codebook (CB), non-codebook (NCB), antenna switching, etc.
- the SRS for codebook or non-codebook use may be used to determine a precoder for codebook-based or non-codebook-based uplink shared channel (Physical Uplink Shared Channel (PUSCH)) transmission based on the SRI.
- PUSCH Physical Uplink Shared Channel
- SRS for beam management purposes may be assumed such that only one SRS resource for each SRS resource set may be transmitted at a given time instant. Note that in the same Bandwidth Part (BWP), if multiple SRS resources with the same time domain behavior belong to different SRS resource sets, these SRS resources may be transmitted simultaneously.
- BWP Bandwidth Part
- the SRS resource configuration information element may include an SRS resource ID (SRS-ResourceId), the number of SRS ports, the SRS port number, the number of transmission combs, SRS resource mapping (e.g., time and/or frequency resource position, resource offset, resource period, number of repetitions, number of SRS symbols, SRS bandwidth, etc.), hopping related information, SRS resource type, sequence ID, spatial relationship information, etc.
- SRS resource ID SRS resource ID
- SRS-ResourceId the number of SRS ports
- SRS port number the number of transmission combs
- SRS resource mapping e.g., time and/or frequency resource position, resource offset, resource period, number of repetitions, number of SRS symbols, SRS bandwidth, etc.
- hopping related information e.g., time and/or frequency resource position, resource offset, resource period, number of repetitions, number of SRS symbols, SRS bandwidth, etc.
- the number of transmission combs has a value of ⁇ 2,4 ⁇ .
- the number of SRS ports (nrofSRS-Ports) N ap SRS has a value of ⁇ 1,2,4 ⁇ .
- the antenna port number p i has a value of ⁇ 1000,1001,... ⁇ .
- the number of consecutive OFDM symbols of SRS (nrofSymbols) N symb SRS has a value of ⁇ 1,2,4 ⁇ .
- the setting of the number of combs to be transmitted may include a comb offset and a cyclic shift (CS index, CS number).
- the UE may switch the Bandwidth Part (BWP) for transmitting the SRS for each slot, or may switch the antenna.
- BWP Bandwidth Part
- the UE may also apply at least one of intra-slot hopping and inter-slot hopping to the SRS transmission.
- k - denotes a variable with a line over k, and may be referred to as k - bar.
- k - 0 p_i may be based on the comb offset K - TC , where K TC is the number of transmitted combs.
- M SC,b SRS is the number of subcarriers used for SRS transmission within the SRS bandwidth m SRS,b [RB].
- n b is a constant.
- SRS antenna switching In Rel. 15 NR, as described above, antenna switching (which may also be called antenna port switching) can be set as an application of SRS. SRS antenna switching may be used, for example, when downlink CSI acquisition is performed using uplink SRS in a Time Division Duplex (TDD) band.
- TDD Time Division Duplex
- UL SRS measurements may be used to determine the DL precoder.
- the UE may report UE capability information (e.g., RRC parameter "supportedSRS-TxPortSwitch") indicating the supported SRS transmission port switching pattern to the network.
- UE capability information e.g., RRC parameter "supportedSRS-TxPortSwitch”
- This pattern may be expressed in the form of "txry”, e.g., "t1r2", “t2r4", etc., which may mean that SRS can be transmitted using x antenna ports out of a total of y antennas (which may be written as xTyR).
- y may correspond to all or a subset of the UE's receiving antennas.
- a 2T4R (2 transmit ports, 4 receive ports) UE may be configured with an SRS resource set for DL CSI acquisition that includes two SRS resources, each with two ports, and whose purpose is antenna switching.
- Multi-port SRS transmission Next, the SRS transmission of the multi-port will be described.
- the UE transmits the SRS by the multi-port, the UE performs multiplexing using the cyclic shift of the base sequence.
- the following equation shows the cyclic shift ⁇ i at the antenna port P i .
- Fig. 3 is a table showing the relationship between the number of transmission combs KTC and the maximum number of cyclic shifts of the SRS nSRSCS ,max in Rel. 16. It is assumed that nSRSCS ,max ⁇ ⁇ 0, 1, ..., nSRSCS ,max ⁇ and NapSRS ⁇ ⁇ 1, 2, 4 ⁇ .
- Fig. 4 is a table showing the number of transmission combs KTC and the cyclic shift value nSRSCS ,i of the SRS when the number of ports NapSRS of the SRS is 2.
- Fig. 5 is a table showing the number of transmission combs KTC and the cyclic shift value nSRSCS ,i of the SRS when the number of ports NapSRS of the SRS is 4.
- the following equation indicates the resource start position k 0 p_i in the frequency direction.
- the first case A corresponds to odd-numbered ports ⁇ 1001, 1003 ⁇ when the number of sending combs is 8.
- the third case C corresponds to the other cases.
- nshift is set by the parameter freqDomainShift of the SRS resource configuration information element (FIG. 2).
- k- TC is set by combOffset of the SRS resource configuration information element.
- KTC is set by transmissionComb of the SRS resource configuration information element. In other words, in case C, the values of the RRC parameters are applied as they are.
- Fig. 6 shows the resource start position k TC p_i in the frequency direction when the number of SRS ports N ap SRS is 2.
- case C is used.
- Fig. 7 shows the resource start position k 0 p_i in the frequency direction when the number of SRS ports N ap SRS is 4.
- Figure 8 shows the SRS allocation for each port when the number of transmission combs is 4.
- case C is used for ports #0 and #2
- case B is used for ports #1 and #3.
- a different cyclic shift is used for each port. Note that in Figure 8, the horizontal axis is time and the vertical axis is frequency. The same applies to other figures showing SRS allocation.
- Figure 9 shows the SRS allocation for each port when the number of transmission combs is 2.
- case C is used for ports #0 and #1.
- different cyclic shifts are used for each port.
- At least one of sequence hopping and group hopping for low-PAPR sequences may be configured by RRC.
- a base sequence r -u ,v (n) is divided into multiple groups.
- r - denotes a variable with an overline on r, and may be called r-bar.
- v denotes a base sequence number within the group.
- the definition of the base sequences r -u ,v (0),...,r -u ,v (M ZC -1) depends on the sequence length M ZC .
- the group number u is based on the SRS sequence ID n ID SRS and the symbol number in the radio frame for the SRS resource, given by:
- the symbol number is based on the slot number n s,f ⁇ in the radio frame, the number of symbols in the slot N symb slot , the starting symbol l 0 for that SRS resource, and the SRS symbol number l′ ⁇ ⁇ 0,1,...,N symb SRS -1 ⁇ in that SRS resource.
- n ID SRS ⁇ ⁇ 0,1,...,1023 ⁇ is given by the higher layer parameter sequenceId in the SRS-Resource IE, or n ID SRS ⁇ ⁇ 0,1,...,65535 ⁇ is given by the higher layer parameter sequenceId in the SRS-PosResource-r16 IE.
- groupOrSequenceHopping is equal to 'neither', then neither group hopping nor sequence hopping is used.
- group number u and sequence number v are given by:
- groupOrSequenceHopping is equal to 'groupHopping', then group hopping is used and sequence hopping is not used.
- group number u and sequence number v are given by:
- c init n ID SRS .
- groupOrSequenceHopping is equal to 'sequenceHopping', sequence hopping is used and group hopping is not used.
- group number u and sequence number v are given by:
- c init n ID SRS .
- SRS Transmission Power Control With index l of power control adjustment state (closed loop state), the transmission power of SRS in an SRS transmission occasion (also referred to as transmission period, etc.) i for active UL BWP b of carrier f of serving cell c, P SRS,b,f,c (i, q s , l) is given by the following equation based on P CMAX,f,c (i), P O_SRS,b,f,c (q s ), M SRS,b,f,c (i), ⁇ SRS,b,f,c (q s ), PL b,f,c (q d ), h b,f,c (i, l):
- an SRS transmission opportunity i is a period during which an SRS is transmitted, and may be composed of, for example, one or more symbols, one or more slots, etc.
- P CMAX,f,c (i) is, for example, the UE maximum output power for carrier f of serving cell c at SRS transmission opportunity i
- P O_SRS,b,f,c (q s ) is a parameter related to the target received power provided by p0 for the active UL BWP b of carrier f of serving cell c and the SRS resource set q s (provided by SRS-ResourceSet and SRS-ResourceSetId) (e.g., a parameter related to a transmit power offset, also referred to as a transmit power offset P0 or a target received power parameter, etc.).
- M SRS,b,f,c (i) is the SRS bandwidth in number of resource blocks for SRS transmission opportunity i on active UL BWP b of carrier f of serving cell c and subcarrier spacing ⁇ .
- ⁇ SRS,b,f,c (q s ) is given by ⁇ (e.g., alpha) for active UL BWP b of carrier f with serving cell c and subcarrier spacing ⁇ and SRS resource set q s , where ⁇ (e.g., alpha) may be defined as a path loss compensation factor for UL power control.
- PL b,f,c (q d ) is the DL pathloss estimate [dB] (pathloss estimation [dB], pathloss compensation) calculated by the UE for the active DL BWP of serving cell c and SRS resource set q s using RS resource index q d , which is the pathloss reference RS (pathloss reference RS, pathloss(PL)-RS, DL-RS for pathloss measurement, e.g., provided by pathlossReferenceRS) associated with SRS resource set q s and is an SS/PBCH block index (e.g., ssb-Index) or a CSI-RS resource index (e.g., csi-RS-Index).
- pathloss reference RS pathloss reference RS, pathloss(PL)-RS, DL-RS for pathloss measurement, e.g., provided by pathlossReferenceRS
- the UE calculates PL b,f,c (q d ) using RS resources obtained from the SS/PBCH block that the UE uses to acquire the MIB.
- pathlossReferenceRSs pathlossReferenceRSs
- h b,f,c (i,l) is the SRS power control adjustment state for the active UL BWP of carrier f of serving cell c at SRS transmission opportunity i.
- the SRS power control adjustment state configuration e.g., srs-PowerControlAdjustmentStates
- the SRS power control adjustment state configuration indicates the same power control adjustment state for SRS and PUSCH transmissions
- the SRS power control adjustment state h b,f,c (i) may be based on ⁇ SRS,b,f,c (m).
- h b,f,c (i) may be based on the accumulated value of ⁇ SRS,b,f,c (m).
- h b,f,c (i) may be ⁇ SRS,b,f,c (i) (absolute value).
- i 0 may be the smallest positive integer such that K SRS (i ⁇ i 0 ) ⁇ 1 symbols prior to SRS transmission opportunity i ⁇ i 0 occurs earlier than K SRS (i) symbols prior to SRS transmission opportunity i.
- K SRS (i) may be the number of symbols in the active UL BWP b of carrier f of serving cell c after the last symbol of the corresponding PDCCH that triggers the SRS transmission and before the first symbol of the SRS transmission. If the SRS transmission is semi-persistent or periodic, K SRS (i) may be the number of K SRS,min symbols in the active UL BWP b of carrier f of serving cell c that is equal to the product of the number of symbols per slot, N symb slot , and the minimum of the value provided by k2 in the PUSCH common configuration information (PUSCH-ConfigCommon).
- the transmission power of the PUSH is controlled based on the TPC command (also called a value, an increase/decrease value, a correction value, etc.) indicated by the value of a field in the DCI (also called a TPC command field, etc.).
- TPC command also called a value, an increase/decrease value, a correction value, etc.
- the transmission power (P PUSCH,b,f,c (i,j,q d ,l)) [dBm] of the PUSCH in a PUSCH transmission occasion (also referred to as a transmission period, etc.) i may be based on at least one of P CMAX,f,c(i) , P O — PUSCH,b,f,c (j), M PUSCH RB,b,f,c (i), ⁇ b,f,c (j), PL b,f,c (q d ), ⁇ TF,b,f, c (i), and f b,f,c (i,l) as shown in the following equation.
- the power control adjustment state may be referred to as the closed loop (CL)-power control (PC) state, the value based on the TPC command of the power control adjustment state index l, the accumulated value of the TPC commands, or the value due to the closed loop.
- l may be referred to as the closed loop index.
- a PUSCH transmission opportunity i is a period during which a PUSCH is transmitted, and may be composed of, for example, one or more symbols, one or more slots, etc.
- P CMAX,f,c (i) is, for example, the maximum transmit power (configured maximum output power, UE configured maximum output power) of the user terminal configured for carrier f of serving cell c at transmission opportunity i.
- P O_PUSCH,b,f,c (j) is, for example, a parameter related to a target received power (e.g., a parameter related to a transmit power offset, a transmit power offset P0, a target received power parameter, etc.) set for an active UL BWP b of a serving cell c at a transmission opportunity i.
- P O_UE_PUSCH,b,f,c (j) may be the sum of P O_NOMINAL_PUSCH,f,c (j) and P O_UE_PUSCH,b,f,c (j).
- M PUSCH RB,b,f,c (i) is, for example, the number of resource blocks (bandwidth) allocated to PUSCH for transmission opportunity i in active UL BWP b of serving cell c and carrier f with subcarrier spacing ⁇ , and ⁇ b,f,c (j) is a value provided by higher layer parameters (e.g., also referred to as msg3-Alpha, p0-PUSCH-Alpha, fractional factor, etc.).
- higher layer parameters e.g., also referred to as msg3-Alpha, p0-PUSCH-Alpha, fractional factor, etc.
- PL b,f,c (q d ) is, for example, the path loss (path loss estimation [dB], path loss compensation) calculated in the user terminal using index q d of a reference signal (reference signal (RS), path loss reference RS, pathloss (PL)-RS, path loss reference RS, path loss measurement DL-RS, PUSCH-PathlossReferenceRS) for the downlink BWP associated with active UL BWP b of carrier f of serving cell c.
- RS reference signal
- path loss reference RS path loss reference RS
- pathloss (PL)-RS pathloss
- path loss reference RS path loss measurement DL-RS
- PUSCH-PathlossReferenceRS path loss measurement DL-RS
- the UE may calculate PL b,f,c (q d ) using RS resources from the synchronization signal (SS)/physical broadcast channel (PBCH) block ( SS block (SSB)) used to obtain the Master Information Block (MIB).
- SS synchronization signal
- PBCH physical broadcast channel
- MIB Master Information Block
- the set of RS resource indices may include one or both of a set of SS/PBCH block indices and a set of channel state information (CSI)-reference signal (RS) resource indices.
- the UE may identify an RS resource index qd in the set of RS resource indices.
- the UE may use the same RS resource index qd as for the corresponding PRACH transmission.
- RAR Random Access Response
- the UE may obtain a mapping between a set of values for the SRI field in DCI format 0_1 and a set of ID values of the pathloss reference RS from higher layer signaling (e.g., sri-PUSCH-PowerControl-Id in SRI-PUSCH-PowerControl).
- the UE may determine the RS resource index qd from the ID of the pathloss reference RS mapped to the SRI field value in DCI format 0_1 that schedules the PUSCH.
- the UE may use the same RS resource index q d for the PUCCH transmission in that PUCCH resource.
- the UE may use an RS resource index qd with a pathloss reference RS ID of zero.
- the RS resource index qd may be provided to the UE by a path loss reference index (e.g., pathlossReferenceIndex) in the specific parameter.
- the UE may determine the RS resource index qd from the value of the ID of the pathloss reference RS mapped to the SRI field in the DCI format that activates the PUSCH transmission. If the DCI format does not include the SRI field, the UE may determine the RS resource index qd with a pathloss reference RS ID of zero.
- ⁇ TF,b,f,c (i) is the transmission power adjustment component (offset, transmission format compensation) for UL BWP b of carrier f of serving cell c.
- f b,f,c (i,l) is the PUSCH power control adjustment state for active UL BWP b of carrier f of serving cell c at transmission opportunity i.
- f b,f,c (i,l) may be based on ⁇ PUSCH,b,f,c (i,l).
- f b,f,c (i,l) may be based on the accumulated value of ⁇ PUSCH,b,f,c (m,l).
- f b,f,c (i,l) may be ⁇ PUSCH,b,f,c (i,l) (absolute value).
- TPC-Accumulation If information indicating that TPC accumulation is disabled (TPC-Accumulation) is not set (if information indicating that TPC accumulation is disabled is not provided and TPC accumulation is set to enabled), the UE accumulates the TPC command values and determines the transmission power based on the accumulation result (power control state) (applies the TPC command values via accumulation).
- TPC-Accumulation information indicating that TPC accumulation is disabled
- the UE does not accumulate the TPC command values and determines the transmission power based on the TPC command values (power control state) (applies the TPC command values without using accumulation).
- ⁇ PUSCH,b,f,c (i,l) may be the TPC command value included in DCI format 0_0 or DCI format 0_1 that schedules a PUSCH transmission opportunity i on active UL BWP b of carrier f of serving cell c, or the TPC command value jointly coded with other TPC commands in DCI format 2_2 with CRC scrambled by a specific Radio Network Temporary Identifier (RNTI) (e.g., TPC-PUSCH-RNTI).
- RNTI Radio Network Temporary Identifier
- Di may be the set of TPC command values that the UE receives between K PUSCH (ii 0 )-1 symbols before PUSCH transmission opportunity ii 0 and K PUSCH (i) symbols before PUSCH transmission opportunity i on active UL BWP b of carrier f of serving cell c for PUSCH power control adjustment state l.
- i 0 may be the smallest positive integer such that K PUSCH (ii 0 ) symbols before PUSCH transmission opportunity ii 0 is earlier than K PUSCH (i) symbols before PUSCH transmission opportunity i.
- K PUSCH (i) may be the number of symbols in the active UL BWP b of carrier f of serving cell c that is after the last symbol of the corresponding PDCCH reception and before the first symbol of the PUSCH transmission. If a PUSCH transmission is configured by configured grant configuration information (ConfiguredGrantConfig), K PUSCH (i) may be the number of K PUSCH, min symbols in the active UL BWP b of carrier f of serving cell c that is equal to the product of the number of symbols per slot N symb slot and the minimum of the value provided by k2 in PUSCH common configuration information (PUSCH-ConfigCommon).
- the power control adjustment state may be set by higher layer parameters to have multiple states (e.g., two states) or a single state.
- multiple power control adjustment states may be identified by an index l (e.g., l ⁇ 0, 1 ⁇ ).
- the transmission power of the PUCCH and the transmission power of the SRS are both limited by the set maximum output power P CMAX,f,c(i) in the same manner as the transmission power of the PUSCH.
- the transmission power of the PUCCH is controlled based on the TPC command (also called a value, an increase/decrease value, a correction value, an instruction value, etc.) indicated by the value of a specified field (also called a TPC command field, a first field, etc.) in the DCI.
- TPC command also called a value, an increase/decrease value, a correction value, an instruction value, etc.
- a specified field also called a TPC command field, a first field, etc.
- the transmission power of the PUCCH in a PUCCH transmission occasion (also referred to as a transmission period, etc.) i for an active UL BWP b of a carrier f of a serving cell c (P PUCCH,b,f,c (i,q u ,q d ,l)) may be expressed as follows:
- the power control adjustment state may be referred to as the PUCCH power control adjustment state, the first or second state, etc.
- PUCCH transmission opportunity i is a predetermined period during which PUCCH is transmitted, and may be composed of, for example, one or more symbols, one or more slots, etc.
- P CMAX,f,c (i) is, for example, the transmission power of the user terminal set for carrier f of serving cell c at transmission opportunity i (also referred to as maximum transmission power, UE maximum output power, etc.)
- P O_PUCCH,b,f,c (q u ) is, for example, a parameter related to the target received power set for active UL BWP b of carrier f of serving cell c at transmission opportunity i (for example, a parameter related to a transmission power offset, also referred to as a transmission power offset P0 or a target received power parameter, etc.).
- M PUCCH RB,b,f,c (i) is, for example, the number of resource blocks (bandwidth) allocated to PUCCH for transmission opportunity i in active UL BWP b of carrier f of serving cell c and subcarrier spacing ⁇ .
- PL b,f,c (q d ) is, for example, the path loss calculated in the user terminal using index q d of the reference signal for the downlink BWP (pathloss reference RS, DL RS for pathloss measurement, PUCCH-PathlossReferenceRS) associated with active UL BWP b of carrier f of serving cell c.
- ⁇ F — PUCCH (F) is a higher layer parameter given per PUCCH format.
- ⁇ TF,b,f,c (i) is a transmission power adjustment component (offset) for UL BWP b of carrier f of serving cell c.
- g b,f,c (i,l) is the TPC command based value (e.g., power control adjustment state, accumulated value of TPC commands, value due to closed loop, PUCCH power adjustment state) of said power control adjustment state index l of active UL BWP of carrier f of serving cell c and transmission opportunity i.
- TPC command based value e.g., power control adjustment state, accumulated value of TPC commands, value due to closed loop, PUCCH power adjustment state
- l ⁇ 0, 1 ⁇ . If the UE is not provided with information indicating the use of two PUCCH power control adjustment states or spatial relationship information for PUCCH, l may be 0.
- the UE may obtain a mapping between the PUCCH spatial relation information ID (pucch-SpatialRelationInfoId) value and the closed loop index (closedLoopIndex, power adjustment state index l) by an index provided by the P0 ID for PUCCH (p0-PUCCH-Id in p0-Set in PUCCH-PowerControl in PUCCH-Config). If the UE receives an activation command containing a value of PUCCH spatial relation information ID, the UE may determine the value of the closed loop index that provides the value of l through a link to the corresponding P0 ID for PUCCH.
- PUCCH spatial relation information ID pump-SpatialRelationInfoId
- the UE may determine the value of l from the value of qu based on the PUCCH spatial relationship information associated with the P0 ID for PUCCH corresponding to qu and the closed-loop index value corresponding to l.
- Qu may be a P0 ID for PUCCH (p0-PUCCH-Id) indicating P0 for PUCCH (P0-PUCCH) in a P0 set for PUCCH (p0-Set).
- JT joint transmission
- TRPs multiple points
- Rel. 17 supports non-coherent joint transmission (NCJT) from two TRPs.
- the PDSCHs from the two TRPs may be precoded and decoded independently.
- the frequency resources may be non-overlapping, partially overlapping, or fully overlapping. In case of overlap, the PDSCH from one TRP will interfere with the PDSCH from the other TRP.
- CJT coherent joint transmission
- Data from the four TRPs may be coherently precoded and transmitted to the UE on the same time-frequency resource.
- the same precoding matrix may be used considering channels from the four TRPs.
- Coherent may mean that there is a certain relationship between the phases of the multiple received signals.
- 4-TRP joint precoding the signal quality may be improved and there may be no interference between the four TRPs. Data may only experience interference outside the four TRPs.
- the unified TCI framework does not specify the TCI state or spatial relationship for each channel as in Rel. 15, but instead specifies a common beam (common TCI state) and may apply it to all UL and DL channels, or a common beam for UL may apply to all UL channels and a common beam for DL may apply to all DL channels.
- a common beam common TCI state
- One common beam for both DL and UL, or one common beam for DL and one common beam for UL (total of two common beams) are being considered.
- the UE may assume the same TCI state for UL and DL (joint TCI state, joint TCI pool, joint common TCI pool, joint TCI state set).
- the UE may assume different TCI states for UL and DL respectively (separate TCI state, separate TCI pool, UL separate TCI pool and DL separate TCI pool, separate common TCI pool, UL common TCI pool and DL common TCI pool).
- the UL and DL default beams may be aligned via MAC CE based beam management (MAC CE level beam instructions).
- the PDSCH default TCI state may be updated to match the default UL beam (spatial relationship).
- DCI based beam management may indicate a common beam/unified TCI state from the same TCI pool (joint common TCI pool, joint TCI pool, set) for both UL and DL.
- X (>1) TCI states may be activated by the MAC CE.
- the UL/DL DCI may select one out of the X active TCI states.
- the selected TCI state may be applied to both UL and DL channels/RS.
- the TCI pool (set) may be multiple TCI states set by RRC parameters, or multiple TCI states (active TCI states, active TCI pool, set) activated by the MAC CE among multiple TCI states set by RRC parameters.
- Each TCI state may be a QCL type A/D RS.
- SSB, CSI-RS, or SRS may be set as the QCL type A/D RS.
- the number of TCI states corresponding to each of one or more TRPs may be specified.
- the number N ( ⁇ 1) of TCI states (UL TCI states) applied to UL channels/RS and the number M ( ⁇ 1) of TCI states (DL TCI states) applied to DL channels/RS may be specified.
- At least one of N and M may be notified/configured/instructed to the UE via higher layer signaling/physical layer signaling.
- this may mean that one UL TCI state and one DL TCI state for a single TRP are notified/configured/instructed separately to the UE (separate TCI states for a single TRP).
- this may mean that multiple (two) UL TCI states and multiple (two) DL TCI states for multiple (two) TRPs are notified/configured/instructed to the UE (separate TCI states for multiple TRPs).
- N and M are 1 or 2, but the values of N and M may be 3 or more, and N and M may be different.
- the RRC parameters configure multiple TCI states for both DL and UL.
- the MAC CE may activate multiple TCI states from the configured multiple TCI states.
- the DCI may indicate one of the activated multiple TCI states.
- the DCI may be a UL/DL DCI.
- the indicated TCI state may apply to at least one (or all) of the UL/DL channels/RS.
- One DCI may indicate both UL TCI and DL TCI.
- a point may be one TCI state that applies to both UL and DL, or it may be two TCI states that apply to UL and DL, respectively.
- At least one of the multiple TCI states configured by the RRC parameters and the multiple TCI states activated by the MAC CE may be referred to as a TCI pool (common TCI pool, joint TCI pool, TCI state pool).
- the multiple TCI states activated by the MAC CE may be referred to as an active TCI pool (active common TCI pool).
- the higher layer parameters (RRC parameters) that set multiple TCI states may be referred to as configuration information that sets multiple TCI states, or simply as “configuration information.” Also, in this disclosure, being instructed to set one of multiple TCI states using DCI may mean receiving indication information that indicates one of the multiple TCI states included in DCI, or may simply mean receiving "instruction information.”
- the RRC parameters configure multiple TCI states for both DL and UL (joint common TCI pool).
- the MAC CE may activate multiple TCI states (active TCI pools) out of the configured multiple TCI states. Separate active TCI pools for each of UL and DL may be configured/activated.
- the DL DCI or new DCI format may select (indicate) one or more (e.g., one) TCI states.
- the selected TCI state may apply to one or more (or all) DL channels/RS.
- the DL channels may be PDCCH/PDSCH/CSI-RS.
- the UE may determine the TCI state of each DL channel/RS using the TCI state behavior (TCI framework) of Rel. 16.
- the UL DCI or new DCI format may select (indicate) one or more (e.g., one) TCI states.
- the selected TCI state may apply to one or more (or all) UL channels/RS.
- the UL channels may be PUSCH/SRS/PUCCH. Thus, different DCIs may indicate UL TCI and DL DCI separately.
- the MAC CE/DCI will support beam activation/indication to a TCI state associated with a different physical cell identifier (PCI). Also, in Rel. 18 NR and later, it is assumed that the MAC CE/DCI will support indicative serving cell change to a cell with a different PCI.
- PCI physical cell identifier
- the UE can configure a list of up to 128 DLorJointTCIState configurations in PDSCH-Config.
- the UE may apply the DLorJointTCIState or UL-TCIState setting from the reference BWP of the reference CC. If the UE has DLorJointTCIState or UL-TCIState set in any CC in the same band, it does not assume that TCI-State, SpatialRelationInfo (spatial relation information), or PUCCH-SpatialRelationInfo (PUCCH spatial relation information) in that band are set, except for SpatialRelationInfoPos (spatial relation information for position).
- SpatialRelationInfo spatial relation information
- PUCCH-SpatialRelationInfo PUCCH spatial relation information
- the UE assumes that if the UE has TCI-State in any CC in the CC list configured by simultaneousTCI-UpdateList1-r16, simultaneousTCI-UpdateList2-r16, simultaneousSpatial-UpdatedList1-r16, or simultaneousSpatial-UpdatedList2-r16, the UE does not configure DLorJointTCIState or UL-TCIState in any CC in the CC list.
- the UE receives an activation command that is used to map up to eight TCI states and/or TCI state pairs, with one TCI state for DL channels/signals and one TCI state for UL channels/signals, to code points of the DCI field 'Transmission Configuration Indication' (TCI) for one of the CC/DL BWPs or for a set of CC/DL BWPs, if available.
- TCI Transmission Configuration Indication
- a set of TCI state IDs is activated for a set of CC/DL BWPs and, if available, for one of the CC/DL BWPs, the same set of TCI state IDs applies to all DL and/or UL BWPs in the indicated CC, where the applicable list of CCs is determined by the CCs indicated in the activation command.
- the UE applies the indicated DLorJointTCIState and/or UL-TCIState to one or a set of CC/DL BWPs, and if the indicated mapping to a single TCI code point applies, the UE applies the indicated DLorJointTCIState and/or UL-TCIState to one or a set of CC/DL BWPs.
- the UE shall assume that the QCL type A/D source RS is set in the CC/DL BWP to which the TCI state applies.
- Unified TCI Framework supports the following modes 1 to 3: [Mode 1] MAC CE based TCI state indication [Mode 2] DCI based TCI state indication by DCI format 1_1/1_2 with DL assignment [Mode 3] DCI based TCI state indication by DCI format 1_1/1_2 without DL assignment
- TCI State ID receives DCI format 1_1/1_2 providing indicated TCI state with Rel.
- DCI format 1_1/1_2 may or may not be accompanied by DL assignment if one is available.
- DCI format 1_1/1_2 does not carry a DL assignment
- the UE can assume (verify) the following for that DCI: -
- the CS-RNTI is used to scramble the CRC for the DCI.
- the values of the following DCI fields are set as follows: -
- the redundancy version (RV) field is all '1's.
- the modulation and coding scheme (MCS) field is all '1's.
- NDI new data indicator
- the frequency domain resource assignment (FDRA) field is all '0's for FDRA type 0 or all '1's for FDRA type 1 or all '0's for Dynamic Switch (similar to PDCCH validation for release of DL semi-persistent scheduling (SPS) or UL grant type 2 scheduling).
- DCI in the above Mode 2/Mode 3 may be called beam instruction DCI.
- Rel. 15/16 if the UE does not support active BWP change via DCI, the UE will ignore the BWP indicator field.
- a similar behavior is considered for the relationship between Rel. 17 TCI state support and the interpretation of the TCI field. It is considered that if the UE is configured with Rel. 17 TCI state, the TCI field will always be present in DCI format 1_1/1_2, and if the UE does not support TCI update via DCI, the UE will ignore the TCI field.
- the presence or absence of a TCI field (TCI presence information in DCI, tci-PresentInDCI) is set for each CORESET.
- the TCI field in DCI format 1_1 is 0 bits if the higher layer parameter tci-PresentInDCI is not enabled, and 3 bits otherwise. If the BWP indicator field indicates a BWP other than the active BWP, the UE shall follow the following actions: [Operation] If the higher layer parameter tci-PresentInDCI is not enabled for the CORESET used for the PDCCH carrying that DCI format 1_1, the UE shall assume that tci-PresentInDCI is not enabled for all CORESETs in the indicated BWP, otherwise the UE shall assume that tci-PresentInDCI is enabled for all CORESETs in the indicated BWP.
- the TCI field in DCI format 1_2 is 0 bit if the higher layer parameter tci-PresentInDCI-1-2 is not set, otherwise it is 1, 2 or 3 bits determined by the higher layer parameter tci-PresentInDCI-1-2. If the BWP indicator field indicates a BWP other than the active BWP, the UE shall follow the following actions.
- the UE shall assume that tci-PresentInDCI is not enabled for all CORESETs in the indicated BWP, otherwise the UE shall assume that tci-PresentInDCI-1-2 for all CORESETs in the indicated BWP is set with the same value as tci-PresentInDCI-1-2 set for the CORESET used for the PDCCH carrying that DCI format 1_2.
- Figure 11A shows an example of a DCI-based joint DL/UL TCI status indication.
- a TCI status ID indicating the joint DL/UL TCI status is associated with the value of the TCI field for the joint DL/UL TCI status indication.
- FIG 11B shows an example of a DCI-based separate DL/UL TCI status indication.
- At least one TCI status ID is associated with the value of the TCI field for the separate DL/UL TCI status indication: a TCI status ID indicating a DL-only TCI status and a TCI status ID indicating a UL-only TCI status.
- TCI field values 000 to 001 are associated with only one TCI status ID for DL
- TCI field values 010 to 011 are associated with only one TCI status ID for UL
- TCI field values 100 to 111 are associated with both one TCI status ID for DL and one TCI status ID for UL.
- the unified/common TCI state may mean the Rel. 17 TCI state indicated using (Rel. 17) DCI/MAC CE/RRC (indicated Rel. 17 TCI state).
- TCI state indicates whether or not TCI is mapped to multiple types of signals (channels/RS).
- unified/common TCI state TCI state applicable to multiple types of signals (channels/RS)
- TCI state for multiple types of signals channels/RS
- the indicated Rel. 17 TCI state may be shared with at least one of the UE-specific reception on PDSCH/PDCC (updated using Rel. 17 DCI/MAC CE/RRC), PUSCH of dynamic grant (DCI)/configured grant, and multiple (e.g., all) dedicated PUCCH resources.
- the TCI state indicated by the DCI/MAC CE/RRC may be referred to as the indicated TCI state, the unified TCI state.
- a TCI state other than the unified TCI state may refer to a Rel. 17 TCI state configured using the (Rel. 17) MAC CE/RRC (configured Rel. 17 TCI state).
- the configured Rel. 17 TCI state, the configured TCI state, a TCI state other than the unified TCI state, and a TCI state applied to a specific type of signal (channel/RS) may be read as interchangeable.
- the configured Rel. 17 TCI state may not be shared with at least one of the UE-specific reception in the PDSCH/PDCC (updated using Rel. 17 DCI/MAC CE/RRC), the PUSCH of the dynamic grant (DCI)/configured grant, and multiple (e.g., all) dedicated PUCCH resources.
- the configured Rel. 17 TCI state may be configured by the RRC/MAC CE for each CORESET/resource/resource set, and may not be updated even if the indicated Rel. 17 TCI state (common TCI state) described above is updated.
- the indicated Rel. 17 TCI state will be applied to UE-specific channels/signals (RS). It is also being considered that the UE will be notified using higher layer signaling (RRC signaling) as to whether the indicated Rel. 17 TCI state or the configured Rel. 17 TCI state will be applied to non-UE-specific channels/signals.
- RS UE-specific channels/signals
- RRC signaling higher layer signaling
- the RRC parameters for the configured Rel. 17 TCI state (TCI state ID) will have the same configuration as the RRC parameters for the TCI state in Rel. 15/16. It is being considered that the configured Rel. 17 TCI state will be configured/instructed for each CORESET/resource/resource set using RRC/MAC CE. It is also being considered that the UE will make decisions regarding the configuration/instruction based on specific parameters.
- the UE will update the indicated TCI state and the configured TCI state separately. For example, if the unified TCI state for the indicated TCI state is updated for the UE, the configured TCI state may not need to be updated. It is also being considered that the UE will make a decision about the update based on a specific parameter.
- RRC/MAC CE higher layer signaling
- TCI state indication for intra-cell beam indication (TCI state indication), it is being considered to support Rel. 17 TCI state indication for UE-specific CORESET and PDSCH associated with that CORESET, and non-UE-specific CORESET and PDSCH associated with that CORESET.
- inter-cell beam indication e.g., L1/L2 inter-cell mobility
- support for indicating Rel. 17 TCI states for UE-specific CORESETs and PDSCHs associated with the CORESETs is under consideration.
- the legacy MAC CE/RACH signaling mechanism may be used.
- the CSI-RS related to the Rel. 17 TCI state applied to CORESET#0 may be QCL'd with the SSB related to the serving cell PCI (physical cell ID) (similar to Rel. 15).
- CORESETs with a common search space (CSS), and CORESETs with a CSS and a UE-specific search space (USS), whether to follow the indicated Rel. 17 TCI state may be configured for each CORESET by an RRC parameter. If the indicated Rel. 17 TCI state is not configured for that CORESET, the configured Rel. 17 TCI state may be applied to that CORESET.
- CCS common search space
- USS UE-specific search space
- RRC parameters may be configured for each channel/resource/resource set to follow or not follow the indicated Rel. 17 TCI state. If the indicated Rel. 17 TCI state is not configured for that channel/resource/resource set, the configured Rel. 17 TCI state may be applied to that channel/resource/resource set.
- the indicated TCI state by the MAC CE/DCI may apply to the following channels/RS:
- CORESET0 If followUnifiedTCIState is set for CORESET0, the indicated TCI state is applied. Otherwise, the Rel. 15 specifications are applied for that CORESET. That is, CORESET0 follows the TCI state activated by the MAC CE or is QCLed with SSB. For a CORESET with index other than 0 with USS/CSS type 3, the indicated TCI state always applies. - For a CORESET with index other than 0, with at least a CSS other than CSS type 3, configured to follow the uniform TCI state, the indicated TCI state applies. Otherwise, the configured TCI state for that CORESET applies to that CORESET.
- [PDSCH] - The indicated TCI state always applies for all UE-dedicated PDSCHs.
- a non-UE-dedicated PDSCH PDSCH scheduled by a DCI in the CSS
- followUnifiedTCIState is set (for the CORESET of the PDCCH that schedules the PDSCH)
- the indicated TCI state may apply. Otherwise, the configured TCI state for the PDSCH applies to the PDSCH.
- followUnifiedTCIState is not set for a PDSCH, whether a non-UE-dedicated PDSCH follows the indicated TCI state may depend on whether followUnifiedTCIState is set for the CORESET used to schedule the PDSCH.
- CSI-RS For an A-CSI-RS for CSI acquisition or beam management, if followUnifiedTCIState is set (for the CORESET of the PDCCH that triggers that A-CSI-RS), the indicated TCI state applies. For other CSI-RSs, the configured TCI state for that CSI-RS applies.
- P O_SRS P O_SRS,b,f,c (q s ) above
- p0 for active UL BWP b of carrier f of serving cell c
- SRS resource set q s (provided by SRS-ResourceSet and SRS-ResourceSetId).
- p0 is provided in the SRS configuration (RRC information element SRS-Config) using an integer between -202 and 24.
- P O_SRS consists only of the absolute target power [dBm] for each SRS setting.
- P O_PUSCH (P O_PUSCH,b,f,c (j) above) is a parameter constituted by the sum of P O_NOMINAL_PUSCH (P O_NOMINAL_PUSCH,f,c (j) above) and P O_UE_PUSCH (P O_UE_PUSCH,b,f,c (j) above).
- P O_NOMINAL_PUSCH is provided by the RRC parameter "p0-NominalWithGrant” and P O_UE_PUSCH is provided by "p0" in the RRC parameter "P0-PUSCH-AlphaSet”.
- the "p0-NominalWithGrant” is provided using integers from -202 to 24, and the "p0” is provided using integers from -16 to 15.
- P O_PUSCH is composed of an absolute target power [dBm] for each cell and a differential power [dB] for each BWP for each cell.
- the RRC parameters include an RRC parameter for UL power control (Uplink-powerControl-r17) (see Figure 12).
- the RRC parameters for UL power control include at least one of the following (see FIG. 12): UL power control ID (ul-powercontrolId-r17), power control parameters for PUSCH (p0AlphaSetforPUSCH-r17), power control parameters for PUCCH (p0AlphaSetforPUCCH-r17), and power control parameters for SRS (p0AlphaSetforSRS-r17).
- the power control parameters for PUSCH (p0AlphaSetforPUSCH), PUCCH (p0AlphaSetforPUCCH), and SRS (p0AlphaSetforSRS) all refer to the parameters related to p0 and the ⁇ set (P0AlphaSet-r17).
- the parameters for the set of p0 and ⁇ include at least one of a parameter indicating p0 (p0-r17), a parameter indicating ⁇ (alpha-r17), and a parameter indicating a power control adjustment state index (closedLoopIndex-r17).
- the transmit power control parameters are updated/changed to those corresponding to the indicated TCI state.
- P O_UE_PUSCH (differential power) is changed according to the indicated TCI state.
- P O_PUCCH absolute power
- P O_PUCCH absolute power
- P O_SRS absolute power
- multiple sets including at least one of the following parameters may be configured: P0 (absolute power [dBm]/differential power [dB]) Closed loop state (power control regulation state, l) Path loss RS (SSB or CSI-RS) ⁇
- the RRC parameters for UL power control are referenced for all PUSCH/PUCCH/SRS (see Figure 12).
- p0 is the absolute power expressed as an integer value in the range of -202 to 24, but p0 updated according to the indicated TCI state may be the differential power expressed as an integer value in the range of -16 to 15.
- the range of updated p0 becomes significantly smaller than the set (original) range of p0, so there is a possibility that the SRS transmission power parameter (e.g., p0) may not be updated properly.
- the inventors therefore came up with a method for controlling the power of UL signals.
- 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.
- higher layer signaling may be, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or any combination thereof.
- RRC Radio Resource Control
- MAC Medium Access Control
- 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
- a b , a_b, and the notation with b added to the lower right of a may be read as mutually interchangeable.
- a c , a ⁇ c, and the notation with c added to the upper right of a may be read as mutually interchangeable.
- a b c , a_b ⁇ c, and the notation with b added to the lower right of a and c added to the upper right may be read as mutually interchangeable.
- ceil(x), ceiling function, and ceiling function may be read as mutually interchangeable.
- floor(x), floor function, and floor function may be read as mutually interchangeable.
- SRS wireless communication method
- P-SRS P-SRS
- SP-SRS SP-SRS
- A(AP)-SRS may be interchangeable.
- SRS resource, SRS resource set, and SRS resource set group may be interchangeable.
- TRP Time Division Multiple Access
- TRP ID higher layer configured ID
- configurable index specific index
- TRP index panel index
- index introduced for CJT antenna port index
- RS (SRS) port index CORESET pool index
- TCI state position ID configured by higher layer signaling
- SRS resource set may be interchangeable.
- the set of power control parameters may include at least one of the following several parameters/information: ⁇ P0 (P0_SRS) Closed loop state (power control adjustment state, l) index Path loss RS (SSB or CSI-RS) ⁇ (path loss compensation coefficient for UL power control)
- the unified TCI state, indicated TCI state, joint TCI state, UL TCI state, DL TCI state, indicated joint TCI state, indicated UL TCI state, indicated DL TCI state, and TCI state may be interpreted as interchangeable.
- the unified TCI state in this disclosure may be the Rel. 17 unified TCI state, the Rel. 18 unified TCI state, or the Rel. X (X is any number) unified TCI state.
- each embodiment of the present disclosure will be described using a specific UL signal (e.g., SRS/PUCCH/PUSCH) as an example, but SRS, PUCCH, and PUSCH may be interpreted as interchangeable.
- SRS, PUCCH, and PUSCH may be interpreted as interchangeable.
- each embodiment of the present disclosure can be appropriately applied not only to the UL signal described, but also to SRS/PUCCH/PUSCH.
- a set of transmission power control parameters for SRS for the unified TCI state (eg, p0AlphaSetforSRS) may be configured/indicated to the UE.
- the transmission power control parameter may be, for example, at least one of a parameter (e.g., p0-r17) related to a transmission power offset (e.g., p0) and a parameter (e.g., alpha-r17) indicating a path loss compensation coefficient (e.g., ⁇ ) for UL power control.
- a parameter e.g., p0-r17
- a parameter e.g., alpha-r17
- ⁇ path loss compensation coefficient
- RRC parameters in this disclosure are merely examples and are not limited to the examples shown.
- "-rXX” added to an RRC parameter may mean that the parameter is defined in Rel. XX, or that the parameter is an extended version of the parameter defined in Rel. XX.
- "-rXX" added to an RRC parameter may be deleted.
- the transmission power control parameter may be a transmission power control parameter used in setting/indicating/updating the unified TCI state (indicated TCI state).
- the transmission power control parameter may be expressed, for example, as absolute power.
- the transmission power control parameter may be, for example, indicated in a first range.
- the first range may be indicated, for example, as a range indicating absolute power (e.g., a range from -202 to 24).
- the first embodiment is broadly divided into the following options 1-1 to 1-4.
- the UE/NW may follow one of options 1-1 to 1-4, or a combination of at least two of options 1-1 to 1-4.
- the range of a parameter (e.g., p0-r17) related to a transmission power offset (e.g., p0) defined in Rel. 17 may be extended.
- the transmission power control parameters defined in the first range may be, for example, only the transmission power control parameters for a specific UL signal (e.g., SRS).
- the transmission power control parameters for signals other than the specific UL signal e.g., PUSCH/PUCCH
- a second range e.g., a range from -16 to 15
- FIG. 13 is a diagram showing an example of transmission power parameters related to Option 1-1.
- the parameter indicating p0 is shown in the range of -202 to 24.
- a first transmission power control parameter (e.g., a transmission power control parameter indicated in a first range (a new RRC parameter, which may be described as p0-r17xx as an example)) may be set/defined separately from a second transmission power control parameter (e.g., a parameter relating to a transmission power offset (e.g., p0) defined in Rel. 17 (e.g., p0-r17)).
- a second transmission power control parameter e.g., a parameter relating to a transmission power offset (e.g., p0) defined in Rel. 17 (e.g., p0-r17)).
- the second transmission power control parameter may be indicated in a second range.
- the second range may be, for example, narrower/smaller than the first range (e.g., a range from -16 to 15).
- the first transmission power control parameter may be indicated in terms of differential power.
- the UE may determine the transmission power control parameters to be used for SRS transmission power control based on the setting of the first transmission power control parameter and the setting of the second transmission power control parameter.
- the UE may use the first transmission power control parameter as the transmission power control parameter to be used for SRS transmission power control.
- the UE may use the second transmission power control parameter as the transmission power control parameter to be used for SRS transmission power control.
- the UE may determine that only the first (or second) transmission power control parameter is used for SRS transmission power control.
- the first transmission power control parameter (e.g., new RRC parameter) may be set only for SRS (e.g., transmission power control parameter for SRS (p0AlphaSetforSRS-r17)).
- the first transmission power control parameter (e.g., new RRC parameter) may be available only for SRS (e.g., transmission power control parameter for SRS (p0AlphaSetforSRS-r17)).
- PUSCH transmission power control parameters p0AlphaSetforPUSCH-r17
- PUCCH transmission power control parameters p0AlphaSetforPUCCH-r17
- a first transmission power control parameter e.g., a new RRC parameter
- an existing transmission power control parameter second transmission power control parameter
- FIG. 14 is a diagram showing an example of transmission power parameters related to Option 1-2.
- the set of p0 and ⁇ (P0AlphaSet-r17) referenced by the transmission power control parameter for SRS (p0AlphaSetforSRS-r17) included in the UL power control parameter (Uplink-powerControl-r17) includes a parameter (p0-r17) indicating p0 represented by differential power and a parameter (p0-r17xx) indicating p0 represented by absolute power.
- the parameter (p0-r17) indicating p0 represented by differential power is expressed in the range of -16 to 15, and the parameter (p0-r17xx) indicating p0 represented by absolute power is expressed in the range of -202 to 24.
- a first set of transmission power control parameters for SRS including a first transmission power control parameter (e.g., a transmission power control parameter indicated in a first range (e.g., p0-r17/p0-r17xx)) and a second set of transmission power control parameters for SRS (e.g., P0AlphaSet-r17) including a second transmission power control parameter (e.g., a parameter related to a transmission power offset (e.g., p0) defined in Rel. 17 (e.g., p0-r17)) may be specified/set in the UL power control parameter (e.g., Uplink-powerControl-r17).
- a first transmission power control parameter e.g., a transmission power control parameter indicated in a first range (e.g., p0-r17/p0-r17xx)
- a second transmission power control parameter e.g., a parameter related to a transmission power offset (e.g., p0) defined in Rel. 17 (e.
- the first transmission power control parameter may be indicated in a first range (e.g., a range of -202 to 24) and the second transmission power control parameter may be indicated in a second range (e.g., a range of -16 to 15).
- the UE may determine the transmission power control parameters to be used for SRS transmission power control based on the setting of the first set of SRS transmission power control parameters and the setting of the second set of SRS transmission power control parameters.
- the UE may use the transmission power control parameters included in the first set of transmission power control parameters for SRS as the transmission power control parameters to be used for SRS transmission power control.
- the UE may use the transmission power control parameters included in the second set of transmission power control parameters for SRS as the transmission power control parameters to be used for SRS transmission power control.
- the UE may determine that only the transmission power control parameters included in the first (or second) set of SRS transmission power control parameters are used for SRS transmission power control.
- FIG. 15 is a diagram showing an example of transmission power parameters related to options 1-3.
- the UL power control parameter (Uplink-powerControl-r17) includes at least one of P0AlphaSet-r17 and P0AlphaSet-r17xx.
- P0AlphaSet-r17 includes a parameter (p0-r17) indicating p0, which has a range from -16 to 15
- P0AlphaSet-r17xx includes a parameter (p0-r17) indicating p0, which has a range from -202 to 24.
- a transmission power control parameter indicated in a first range may be indicated by a combination of a transmission power control parameter indicated in a second range (e.g., a second transmission power control parameter (e.g., a parameter related to a transmission power offset (e.g., p0) defined in Rel. 17 (e.g., p0-r17)) and a specific RRC parameter (which may be written as p0-r17xx, for example).
- a second transmission power control parameter e.g., a parameter related to a transmission power offset (e.g., p0) defined in Rel. 17 (e.g., p0-r17)
- a specific RRC parameter which may be written as p0-r17xx, for example.
- the transmission power control parameter indicated in the first range may be notified/defined, for example, in X bits (e.g., 8 bits).
- the transmission power control parameter indicated in the second range may be notified/defined, for example, in Y bits (e.g., 5 bits).
- the UE may determine the specific RRC parameter as a bit at a specific position (e.g., Most Significant Bit (MSB)/Least Significant Bit (LSB)) of the transmission power control parameter indicated in the first range.
- MSB Most Significant Bit
- LSB east Significant Bit
- FIG. 16 is a diagram showing an example of transmission power parameters related to options 1-4.
- the set of p0 and ⁇ (P0AlphaSet-r17) referenced by the transmission power control parameter for SRS (p0AlphaSetforSRS-r17) included in the UL power control parameter (Uplink-powerControl-r17) includes the transmission power control parameter (p0-r17) and a specific RRC parameter (p0-r17xx) indicated in the second range.
- the UE determines the combination of the transmission power control parameters (p0-r17) indicated in the second range and the specific RRC parameters (p0-r17xx) as the transmission power control parameters indicated in the first range.
- the impact on the physical layer procedure of SRS transmission power control based on the unified TCI state defined in the existing specifications can be relatively small, and transmission power control can be performed appropriately.
- a set of transmission power control parameters for SRS for the unified TCI state (eg, p0AlphaSetforSRS) may be configured/indicated to the UE.
- the transmission power control parameter may be, for example, at least one of a parameter (e.g., p0-r17) related to a transmission power offset (e.g., p0) and a parameter (e.g., alpha-r17) indicating a path loss compensation coefficient (e.g., ⁇ ) for UL power control.
- a parameter e.g., p0-r17
- a parameter e.g., alpha-r17
- ⁇ path loss compensation coefficient
- the transmission power control parameter may be a transmission power control parameter used in setting/indicating/updating the unified TCI state (indicated TCI state).
- the transmission power control parameter may be expressed, for example, as a differential power.
- the UE may calculate/determine the transmission power of the SRS (e.g., P SRS ) based on a first transmission power control parameter (e.g., p0) provided by specific higher layer parameters (e.g., SRS resource set parameters (e.g., SRS-ResourceSet) and SRS resource set ID (e.g., SRS-ResourceSetId)) and a second transmission power control parameter (e.g., p0-r17) applied by a transmission power control parameter for SRS (e.g., p0AlphaSetforSRS) associated with an indicated TCI state (joint/UL TCI state).
- a first transmission power control parameter e.g., p0
- specific higher layer parameters e.g., SRS resource set parameters (e.g., SRS-ResourceSet) and SRS resource set ID (e.g., SRS-ResourceSetId)
- a second transmission power control parameter e.g., p0-r17
- the second embodiment is broadly divided into the following options 2-1 (including variations) to 2-3.
- the UE/NW may follow one of options 2-1 to 2-3, or a combination of at least two of options 2-1 to 2-3.
- an RRC parameter related to the unified TCI state (eg, TCI-State or TCI-UL-State in dl-OrJointTCI-StateList) may be configured.
- the UE may calculate P O_SRS,b,f,c (q s ) as the sum of a first transmission power control parameter (e.g., p0) provided by a specific higher layer parameter (e.g., a parameter of an SRS resource set (e.g., SRS-ResourceSet) and an SRS resource set ID (e.g., SRS-ResourceSetId)) and a second transmission power control parameter (e.g., p0-r17) applied by a transmission power control parameter for SRS (e.g., p0AlphaSetforSRS) associated with the indicated TCI state ( joint/ UL TCI state).
- a first transmission power control parameter e.g., p0
- a specific higher layer parameter e.g., a parameter of an SRS resource set (e.g., SRS-ResourceSet) and an SRS resource set ID (e.g., SRS-ResourceSetId)
- a second transmission power control parameter e.g
- the UE may calculate P O_SRS,b, f,c (q s ) based on a first transmit power control parameter (e.g., p0) provided by certain higher layer parameters (e.g., SRS resource set parameters (e.g., SRS-ResourceSet) and SRS resource set ID (e.g., SRS -ResourceSetId)).
- a first transmit power control parameter e.g., p0
- certain higher layer parameters e.g., SRS resource set parameters (e.g., SRS-ResourceSet) and SRS resource set ID (e.g., SRS -ResourceSetId)
- P O_SRS,b,f,c (q s ) may be P 0 in active UL BWP b of carrier f of serving cell c for the SRS resource set (q s ).
- the RRC parameters e.g., followUnifiedTCI-State-r17/followUnifiedTCI-StateSRS-r17
- followUnifiedTCI-State-r17/followUnifiedTCI-StateSRS-r17 may not be set.
- RRC parameters related to the unified TCI state may be configured for the UE.
- TCI-State or TCI-UL-State in dl-OrJointTCI-StateList may be configured for the UE.
- the UE may calculate P O_SRS,b,f,c (q s ) as the sum of a first transmission power control parameter (e.g., p0) provided by certain higher layer parameters (e.g., parameters of an SRS resource set (e.g., SRS-ResourceSet) and an SRS resource set ID (e.g., SRS-ResourceSetId)) and, if available, a second transmission power control parameter (e.g., p0-r17) applied by a transmission power control parameter for SRS (e.g., p0AlphaSetforSRS ) associated with the indicated TCI state (joint/UL TCI state).
- a first transmission power control parameter e.g., p0
- certain higher layer parameters e.g., parameters of an SRS resource set (e.g., SRS-ResourceSet) and an SRS resource set ID (e.g., SRS-ResourceSetId)
- a second transmission power control parameter e.g.
- the UE may calculate P O_SRS,b, f,c (q s ) based on a first transmit power control parameter (e.g., p0) provided by certain higher layer parameters (e.g., SRS resource set parameters (e.g., SRS-ResourceSet) and SRS resource set ID (e.g., SRS -ResourceSetId)).
- a first transmit power control parameter e.g., p0
- certain higher layer parameters e.g., SRS resource set parameters (e.g., SRS-ResourceSet) and SRS resource set ID (e.g., SRS -ResourceSetId)
- P O_SRS,b,f,c (q s ) may be P 0 in active UL BWP b of carrier f of serving cell c for the SRS resource set (q s ).
- the UE may add a specific term (eg, P O_UE_SRS ) in calculating the transmission power of the SRS (eg, the above formula D1).
- a specific term eg, P O_UE_SRS
- the particular term may be set/provided, for example, by a second transmission power control parameter (e.g., p0-r17) applied by a transmission power control parameter for SRS (e.g., p0AlphaSetforSRS) associated with the indicated TCI state (joint/UL TCI state), or may be set/provided by a new RRC parameter defined in Rel. 18 or later.
- a second transmission power control parameter e.g., p0-r17
- a transmission power control parameter for SRS e.g., p0AlphaSetforSRS
- the UE may calculate P O_SRS,b,f,c (q s ) in the calculation of the SRS transmission power (e.g., equation D1 above) based on a first transmission power control parameter (e.g., p0) provided by a specific higher layer parameter (e.g., an SRS resource set parameter (e.g., SRS-ResourceSet) and an SRS resource set ID (e.g. , SRS - ResourceSetId)).
- a first transmission power control parameter e.g., p0
- a specific higher layer parameter e.g., an SRS resource set parameter (e.g., SRS-ResourceSet) and an SRS resource set ID (e.g. , SRS - ResourceSetId)
- the UE may assume/expect/determine that P O_SRS,b,f,c (q s ) is the same value (eg, P O_NOMINAL_PUSCH ) as provided by a particular higher layer parameter (eg, p0-NominalWithGrant).
- the UE may use the specific term in calculating the transmission power of the SRS if at least one of the following conditions is met: - (For SRS) A second transmission power control parameter (e.g., p0-r17) is set. A transmission power control parameter for SRS (eg, p0AlphaSetforSRS) associated with the indicated TCI state (joint/UL TCI state) is set. - Unified TCI state is set for SRS. -TCI state is set for SRS.
- - (For SRS) A second transmission power control parameter (e.g., p0-r17) is set.
- a transmission power control parameter for SRS eg, p0AlphaSetforSRS
- - Unified TCI state is set for SRS.
- -TCI state is set for SRS.
- the UE may use the second term (eg, P O_UE_SRS ) instead of the first term (eg, P O_SRS,b,f,c (q s )).
- At least one of the second term (e.g., P O_UE_SRS ), ⁇ , and the power control adjustment state index may be provided by a transmission power control parameter for SRS (e.g., p0AlphaSetforSRS) associated with the indicated TCI state (joint/UL TCI state).
- a transmission power control parameter for SRS e.g., p0AlphaSetforSRS
- At least one of the second term (e.g., P O_UE_SRS ), ⁇ , and the power control adjustment state index may be provided by a transmission power control parameter for SRS (e.g., p0AlphaSetforSRS) associated with an indicated TCI state (joint/UL TCI state) for a particular SRS resource.
- a transmission power control parameter for SRS e.g., p0AlphaSetforSRS
- the RS index qd associated with P SRS / ⁇ may be provided/configured by a pathloss reference RS ID (e.g., pathlossReferenceRS-Id-r17) associated/included in the indicated TCI state (joint/UL TCI state) of the particular SRS resource.
- a pathloss reference RS ID e.g., pathlossReferenceRS-Id-r17
- the particular SRS resource may be, for example, the SRS resource corresponding to the lowest (or highest) SRS resource ID.
- the effect on information defined in existing specifications e.g., RRC parameters
- transmission power control can be performed appropriately.
- a set of transmit power control parameters for PUCCH for the unified TCI state (eg, p0AlphaSetforPUCCH) may be configured/indicated to the UE.
- the transmission power control parameters may indicate, for example, at least a parameter (e.g., p0-r17) related to the transmission power offset (e.g., p0).
- the transmission power control parameter may be a transmission power control parameter used in setting/indicating/updating the unified TCI state (indicated TCI state).
- the UE may perform transmission power control of the PUCCH based on the transmission power control parameter.
- the UE may calculate/determine/set/update PO_UE_PUCCH based on the transmission power control parameter.
- the third embodiment is broadly divided into the following options 3-1 to 3-3.
- the UE/NW may follow one of options 3-1 to 3-3, or a combination of at least two of options 3-1 to 3-3.
- the UE may apply this embodiment if at least one of the following conditions is met: - Whether or not specific UE capability information is reported (option 3-1-1). - Whether or not the unified TCI status is set (option 3-1-2). ⁇ Whether or not to configure a set of PUCCH transmission power control parameters for the unified TCI state (option 3-1-3).
- option 3-1-1 for example, if the UE reports specific UE capability information, this embodiment may be applied.
- the UE may apply this embodiment when higher layer parameters related to the unified TCI state (e.g., TCI-State or TCI-UL-State in dl-OrJointTCI-StateList) are configured.
- higher layer parameters related to the unified TCI state e.g., TCI-State or TCI-UL-State in dl-OrJointTCI-StateList
- the UE may apply this embodiment if p0AlphaSetforPUCCH is set.
- the parameters for calculating/determining/setting/updating P O_UE_PUCCH may be based on at least one of the following: A set of transmit power control parameters for PUCCH for the unified TCI state (eg, p0AlphaSetforPUCCH-r17). A parameter (eg, p0-r17) related to a transmission power offset (eg, p0) in a set of transmission power control parameters for PUCCH for the unified TCI state (eg, p0AlphaSetforPUCCH-r17).
- the UE may assume/expect that the setting/update of the transmission power control parameters based on the unified TCI state framework will not be set/instructed.
- UEs that support the unified TCI state may apply/support this embodiment.
- the transmission power of the PUCCH can be controlled without defining new parameters, making implementation easier.
- a set of transmit power control parameters for PUCCH for the unified TCI state (eg, p0AlphaSetforPUCCH) may be configured/indicated to the UE.
- the transmission power control parameter may be, for example, at least one of a parameter (e.g., p0-r17) related to a transmission power offset (e.g., p0) and a parameter (e.g., alpha-r17) indicating a path loss compensation coefficient (e.g., ⁇ ) for UL power control.
- a parameter e.g., p0-r17
- a parameter e.g., alpha-r17
- ⁇ path loss compensation coefficient
- the transmission power control parameter may be a transmission power control parameter used in setting/indicating/updating the unified TCI state (indicated TCI state).
- the transmission power control parameter may be expressed, for example, as an absolute target power (absolute power).
- the UE may control the transmission power of the PUCCH based on the transmission power control parameters.
- the fourth embodiment is broadly divided into the following options 4-1 to 4-3.
- the UE/NW may follow one of options 4-1 to 4-3, or a combination of at least two of options 4-1 to 4-3.
- the transmission power control parameters (e.g., p0-r17) may be indicated in a range that is an extension of the range defined in Rel.
- the transmission power control parameter may be, for example, indicated in a first range.
- the first range may be indicated, for example, as a range indicating absolute power (e.g., a range from -202 to 24).
- New higher layer (RRC) parameters for setting/indicating absolute target power may be defined.
- UEs may distinguish between the transmission power control parameters defined up to Rel. 17 and the new RRC parameters.
- At least one of options 1-1 to 1-4 in the first embodiment described above may be applied by replacing SRS with PUCCH.
- the UE may apply this embodiment if at least one of the following conditions is met: - Whether or not specific UE capability information is reported (option 4-2-1). - Whether or not the unified TCI status is set (option 4-2-2). ⁇ Whether or not to configure a set of PUCCH transmission power control parameters for the unified TCI state (option 4-2-3).
- the UE may apply this embodiment when higher layer parameters related to the unified TCI state (e.g., TCI-State or TCI-UL-State in dl-OrJointTCI-StateList) are configured.
- higher layer parameters related to the unified TCI state e.g., TCI-State or TCI-UL-State in dl-OrJointTCI-StateList
- the UE may apply this embodiment if p0AlphaSetforPUCCH is set.
- the UE may assume/expect that the setting/update of the transmission power control parameters based on the unified TCI state framework will not be set/instructed.
- UEs that support the unified TCI state may apply/support this embodiment.
- the target power for PUCCH can be set/updated flexibly and appropriately.
- 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.
- 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
- At least one of 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 that the operations of the above-mentioned embodiments are enabled, any RRC parameters for a specific release (e.g., Rel. 18/19), etc.
- the RRC parameters may have names that are the names of existing RRC parameters with "r18"/"r19" added.
- the UE may apply, for example, the behavior of Rel. 15/16/17.
- Appendix A With respect to one embodiment of the present disclosure, the following invention is noted.
- Appendix A-1 a receiver for receiving a configuration relating to a Transmission Configuration Indication (TCI) state applicable to a plurality of signals and a first Sounding Reference Signal (SRS) transmit power parameter associated with the TCI state, the SRS transmit power parameter being expressed in absolute power;
- a terminal having a control unit that performs transmission power control of the SRS based on the first SRS transmission power parameter.
- the receiver further receives a second SRS transmission power parameter associated with the TCI state indicated by a differential power;
- the first SRS transmission power parameter is a combination of a second SRS transmission power parameter associated with the TCI state indicated by a differential power and other parameters.
- Appendix B With respect to one embodiment of the present disclosure, the following invention is noted.
- Appendix B-1 a receiver for receiving a configuration relating to a Transmission Configuration Indication (TCI) state applicable to a plurality of signals and a first Physical Uplink Control Channel (PUCCH) transmit power parameter associated with the TCI state, the PUCCH transmit power parameter being expressed in absolute power;
- a terminal comprising: a control unit that performs a transmission power control of a PUCCH based on the first PUCCH transmission power parameter.
- Appendix B-2 The terminal according to Supplementary Note B-1, wherein the first PUCCH transmission power parameter is indicated in a range wider than the range of a second PUCCH transmission power parameter associated with the TCI state indicated by a differential power.
- the receiver further receives a second PUCCH transmission power parameter associated with the TCI state indicated by a differential power;
- 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.
- FIG. 17 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
- the wireless communication system 1 (which may simply be referred to as system 1) may be a system that realizes communication using Long Term Evolution (LTE) specified by the Third Generation Partnership Project (3GPP), 5th generation mobile communication system New Radio (5G NR), or the like.
- LTE Long Term Evolution
- 3GPP Third Generation Partnership Project
- 5G NR 5th generation mobile communication system New Radio
- 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 18 is a diagram showing an example of the 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. Note that one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140 may be provided.
- 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
- 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 120 may transmit a setting for a Transmission Configuration Indication (TCI) state (unified TCI state) applicable to multiple signals and a first Sounding Reference Signal (SRS) transmission power parameter associated with the TCI state indicated by absolute power.
- TCI Transmission Configuration Indication
- SRS Sounding Reference Signal
- the control unit 110 may use the first SRS transmission power parameter to instruct transmission power control of the SRS (first/second embodiment).
- the transceiver 120 may transmit a setting for a Transmission Configuration Indication (TCI) state (unified TCI state) applicable to multiple signals and a first physical uplink control channel (PUCCH) transmission power parameter associated with the TCI state indicated by absolute power.
- TCI Transmission Configuration Indication
- PUCCH physical uplink control channel
- the control unit 110 may use the first PUCCH transmission power parameter to instruct transmission power control of the PUCCH (third/fourth embodiment).
- the user terminal 19 is a diagram showing an example of the configuration of a user terminal according to an embodiment.
- the user terminal 20 includes a control unit 210, a transmitting/receiving unit 220, and a transmitting/receiving antenna 230.
- the control unit 210, the transmitting/receiving unit 220, and the transmitting/receiving 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 unit 220 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 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 220 may receive a setting for a Transmission Configuration Indication (TCI) state (unified TCI state) applicable to multiple signals and a first Sounding Reference Signal (SRS) transmission power parameter associated with the TCI state, expressed in absolute power.
- TCI Transmission Configuration Indication
- SRS Sounding Reference Signal
- the controller 210 may control the transmission power of the SRS based on the first SRS transmission power parameter (first/second embodiment).
- the first SRS transmission power parameter may be indicated in a range wider than the range of the second SRS transmission power parameter associated with the TCI state indicated by the differential power (first embodiment).
- the transceiver 220 may further receive a second SRS transmission power parameter associated with the TCI state indicated by the differential power.
- the controller 210 may control the transmission power of the SRS using either the first SRS transmission power parameter or the second SRS transmission power parameter (first embodiment).
- the first SRS transmission power parameter may be composed of a combination of a second SRS transmission power parameter associated with the TCI state indicated by the differential power and other parameters (first embodiment).
- the transceiver 220 may receive a setting for a Transmission Configuration Indication (TCI) state (unified TCI state) applicable to a plurality of signals, and a first physical uplink control channel (PUCCH) transmission power parameter associated with the TCI state, expressed in absolute power.
- TCI Transmission Configuration Indication
- PUCCH physical uplink control channel
- the controller 210 may perform PUCCH transmission power control based on the first PUCCH transmission power parameter (third/fourth embodiment).
- the first PUCCH transmission power parameter may be indicated in a range wider than the range of the second PUCCH transmission power parameter associated with the TCI state indicated by the differential power (fourth embodiment).
- the transceiver 220 may further receive a second PUCCH transmission power parameter associated with the TCI state indicated by the differential power.
- the controller 210 may control the transmission power of the PUCCH using either the first PUCCH transmission power parameter or the second PUCCH transmission power parameter (fourth embodiment).
- the first PUCCH transmission power parameter may be composed of a combination of a second PUCCH transmission power parameter associated with the TCI state indicated by the differential power and other parameters (fourth embodiment).
- 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. 20 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 the spatial relationship information identifier
- TCI state ID the spatial relationship information
- TCI state the spatial relationship information
- TCI state the spatial relationship information
- TCI state the spatial relationship information
- 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. 21 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, an RPM 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, an RPM 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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Abstract
Description
NRにおいては、測定用参照信号(Sounding Reference Signal(SRS))の用途が多岐にわたっている。NRのSRSは、既存のLTE(LTE Rel.8-14)でも利用された上りリンク(Uplink(UL))のCSI測定のためだけでなく、下りリンク(Downlink(DL))のCSI測定、ビーム管理(beam management)などにも利用される。
k0 p_i=k- 0 p_i+Σb=0 BSRSKTCMSC,b SRSnb
Rel.15 NRでは、上述したようにSRSの用途としてアンテナスイッチング(アンテナポートスイッチングと呼ばれてもよい)が設定可能である。SRSアンテナスイッチングは、例えば、時分割複信(Time Division Duplex(TDD))バンドにおいて、下りリンクのCSI取得(acquisition)を上りリンクのSRSを用いて行う際に利用されてもよい。
マルチポートのSRS送信について説明する。UEは、マルチポートによるSRS送信を行う場合、ベース系列のサイクリックシフトを用いた多重を行う。次式は、アンテナポートPiにおけるサイクリックシフトαiを示す。
ここで、各無線フレームの開始において、疑似ランダム系列c(i)はcinit=nID SRSによって初期化される。
ここで、各無線フレームの開始において、疑似ランダム系列c(i)はcinit=nID SRSによって初期化される。
電力制御調整状態(power control adjustment state、クローズドループ状態)のインデックスlを用いて、サービングセルcのキャリアfのアクティブUL BWP bについてのSRS送信機会(transmission occasion)(送信期間等ともいう)iにおけるSRSの送信電力(PSRS、b,f,c(i,qs,l))は、PCMAX,f,c(i)、PO_SRS,b,f,c(qs)、MSRS,b,f,c(i)、αSRS,b,f,c(qs)、PLb,f,c(qd)、hb,f,c(i,l)に基づき、次式によって与えられる。
NRでは、PUSCHの送信電力は、DCI内のフィールド(TPCコマンドフィールド等ともいう)の値が示すTPCコマンド(値、増減値、補正値(correction value)等ともいう)に基づいて制御される。
NRでは、PUCCHの送信電力は、DCI内の所定フィールド(TPCコマンドフィールド、第1のフィールド等ともいう)の値が示すTPCコマンド(値、増減値、補正値(correction value)、指示値、等ともいう)に基づいて制御される。
joint transmission(JT)は、複数のポイント(例えば、TRP)から単一のUEへの同時データ送信を意味してもよい。
統一TCIフレームワークによれば、複数種類(UL/DL)のチャネル/RSを共通のフレームワークによって制御できる。統一TCIフレームワークは、Rel.15のようにTCI状態又は空間関係をチャネルごとに規定するのではなく、共通ビーム(共通TCI状態)を指示し、それをUL及びDLの全てのチャネルへ適用してもよいし、UL用の共通ビームをULの全てのチャネルに適用し、DL用の共通ビームをDLの全てのチャネルに適用してもよい。
あるCC内のPDSCHのDMRS及びPDCCHのDMRSと、CSI-RSと、のための参照信号を提供するために、さらに、もし、あるCC内の動的グラント及び設定グラントベースのPUSCH及びPUCCHリソースと、SRSと、のためのUL TX(送信)空間フィルタが利用可能である場合、そのUL TCIフィルタの決定のための参照を提供するために、PDSCH-Config(PDSCH設定)内において、UEは、128個までのDLorJointTCIState(DL又はジョイントのTCI状態)設定のリストを設定されることができる。
Rel.17統一TCIフレームワークは、以下のモード1から3をサポートする。
[モード1]MAC CEベースTCI状態指示(MAC CE based TCI state indication)
[モード2]DLアサインメントを伴うDCIベースTCI状態指示(DCI based TCI state indication by DCI format 1_1/1_2 with DL assignment)
[モード3]DLアサインメントを伴わないDCIベースTCI状態指示(DCI based TCI state indication by DCI format 1_1/1_2 without DL assignment)
- CS-RNTIがDCIのためのCRCのスクランブルに用いられる。
- 以下のDCIフィールド(特別フィールド)の値が以下のようにセットされる:
- redundancy version(RV)フィールドがall '1's。
- modulation and coding scheme(MCS)フィールドがall '1's。
- new data indicator(NDI)フィールドが0。
- frequency domain resource assignment(FDRA)フィールドが、FDRAタイプ0に対してall '0's、又は、FDRAタイプ1に対してall '1's、又は、ダイナミックスイッチ(DynamicSwitch)に対してall '0's(DL semi-persistent scheduling(SPS)又はULグラントタイプ2スケジューリングのリリースのPDCCHの検証(validation)と同様)。
[動作]もしそのDCIフォーマット1_1を伝達するPDCCHに用いられるCORESETに対して上位レイヤパラメータtci-PresentInDCIが有効にされない場合、UEは、指示されたBWP内の全てのCORESETに対してtci-PresentInDCIが有効にされないと想定し、そうでない場合、UEは、指示されたBWP内の全てのCORESETに対してtci-PresentInDCIが有効にされると想定する。
[動作]もしそのDCIフォーマット1_2を伝達するPDCCHに用いられるCORESETに対して上位レイヤパラメータtci-PresentInDCI-1-2が設定されない場合、UEは、指示されたBWP内の全てのCORESETに対してtci-PresentInDCIが有効にされないと想定し、そうでない場合、UEは、指示されたBWP内の全てのCORESETに対してtci-PresentInDCI-1-2が、そのDCIフォーマット1_2を伝達するPDCCHに用いられるCORESETに対して設定されたtci-PresentInDCI-1-2と同じ値を伴って設定されると想定する。
Rel.17TCI状態について、統一/共通TCI状態は、(Rel.17の)DCI/MAC CE/RRCを用いて指示されるRel.17TCI状態(指示Rel.17TCI状態(indicated Rel.17 TCI state))を意味してもよい。
MAC CE/DCIによる指示TCI状態("indicated TCI state")は、以下のチャネル/RSに適用されてもよい。
・CORESET0に対し、followUnifiedTCIState(統一TCI状態に従うこと)が設定された場合、指示TCI状態が適用される。そうでない場合、そのCORESETに対し、Rel.15仕様が適用される。すなわち、CORESET0は、MAC CEによってアクティベートされたTCI状態に従う、又は、SSBとQCLされる。
・USS/CSSタイプ3を伴う、インデックス0以外のCORESETに対し、常に指示TCI状態が適用される。
・少なくともCSSタイプ3以外のCSSを伴う、インデックス0以外のCORESETに対し、統一TCI状態に従うことが設定された場合、指示TCI状態が適用される。そうでない場合、そのCORESETに対する設定TCI状態("configured TCI state")が、そのCORESETに適用される。
・全てのUE個別(UE-dedicated)PDSCHに対し、常に指示TCI状態が適用される。
・非UE個別(non-UE-dedicated)PDSCH(CSS内のDCIによってスケジュールされたPDSCH)に対し、(そのPDSCHをスケジュールするPDCCHのCORESETに対して)followUnifiedTCIStateが設定された場合、指示TCI状態が適用されてもよい。そうでない場合、そのPDSCHに対する設定TCI状態が、そのPDSCHに適用される。PDSCHに対し、followUnifiedTCIStateが設定されない場合、非UE個別PDSCHが指示TCI状態に従うかどうかが、そのPDSCHのスケジューリングに用いられたCORESETに対し、followUnifiedTCIStateが設定されたか否かに応じて決定されてもよい。
・CSI取得(acquisition)又はビーム管理(management)のためのA-CSI-RSに対し、(そのA-CSI-RSをトリガするPDCCHのCORESETに対して)followUnifiedTCIStateが設定された場合、指示TCI状態が適用される。その他のCSI-RSに対し、そのCSI-RSに対する設定TCI状態("configured TCI state")が適用される。
・全ての個別(dedicated)PUCCHリソースに対し、常に指示TCI状態が適用される。
・動的(dynamic)/設定(configured)グラントPUSCHに対し、常に指示TCI状態が適用される。
・ビーム管理の用途のA-SRSと、コードブック(CB)/ノンコードブック(NCB)/アンテナスイッチングの用途のA/SP/P-SRSのための、SRSリソースセットに対し、統一TCI状態に従うことが設定された場合、指示TCI状態が適用される。その他のSRSに対し、そのSRSリソースセット内の設定TCI状態が適用される。
上述のように、PO_SRS(上記PO_SRS,b,f,c(qs))は、サービングセルcのキャリアfのアクティブUL BWP bと、SRSリソースセットqs(SRS-ResourceSet及びSRS-ResourceSetIdによって提供される)と、に対するp0によって提供される。
・P0(絶対電力[dBm]/差分電力[dB])
・クローズドループ状態(電力制御調整状態、l)
・パスロスRS(SSB又はCSI-RS)
・α
各実施形態において、SRS、P-SRS、SP-SRS、A(AP)-SRS、は互いに読み替えられてもよい。本開示において、SRSリソース、SRSリソースセット、SRSリソースセットグループは互いに読み替えられてもよい。
・P0(P0_SRS)
・クローズドループ状態(電力制御調整状態、l)インデックス
・パスロスRS(SSB又はCSI-RS)
・α(UL電力制御用パスロス補償係数)
UEに対し、統一TCI状態に関するSRS用送信電力制御パラメータのセット(例えば、p0AlphaSetforSRS)が設定/指示されてもよい。
例えば、Rel.17において規定される送信電力オフセット(例えば、p0)に関するパラメータ(例えば、p0-r17)の範囲が拡張されてもよい。
例えば、第2の送信電力制御パラメータ(例えば、Rel.17において規定される送信電力オフセット(例えば、p0)に関するパラメータ(例えば、p0-r17))とは別に、第1の送信電力制御パラメータ(例えば、第1の範囲で示される送信電力制御パラメータ(新規RRCパラメータ、一例としてp0-r17xxと記載されてもよい))が、設定/規定されてもよい。
例えば、第1の送信電力制御パラメータ(例えば、第1の範囲で示される送信電力制御パラメータ(例えば、p0-r17/p0-r17xx))を含む第1のSRS用送信電力制御パラメータのセット(例えば、P0AlphaSet-r17xx)と、第2の送信電力制御パラメータ(例えば、Rel.17において規定される送信電力オフセット(例えば、p0)に関するパラメータ(例えば、p0-r17))を含む第2のSRS用送信電力制御パラメータのセット(例えば、P0AlphaSet-r17)と、の少なくとも1つが、UL電力制御パラメータ(例えば、Uplink-powerControl-r17)において規定/設定されてもよい。
例えば、第1の範囲で示される送信電力制御パラメータは、第2の範囲で示される送信電力制御パラメータ(例えば、第2の送信電力制御パラメータ(例えば、Rel.17において規定される送信電力オフセット(例えば、p0)に関するパラメータ(例えば、p0-r17)))と、特定のRRCパラメータ(例えば、p0-r17xxと記載されてもよい)と、の組み合わせによって示されてもよい。
UEに対し、統一TCI状態に関するSRS用送信電力制御パラメータのセット(例えば、p0AlphaSetforSRS)が設定/指示されてもよい。
UEに対し、統一TCI状態に関するRRCパラメータ(例えば、dl-OrJointTCI-StateListにおけるTCI-State、又は、TCI-UL-State)が設定されてもよい。
UEに対し、統一TCI状態に従うことを示すRRCパラメータ(例えば、followUnifiedTCI-State-r17/followUnifiedTCI-StateSRS-r17)が設定されなくてもよい。
UEは、SRSの送信電力の算出(例えば、上記式D1)において、特定の項(例えば、PO_UE_SRS)を追加してもよい。
・(SRS用)第2の送信電力制御パラメータ(例えば、p0-r17)が設定される。
・指示TCI状態(ジョイント/UL TCI状態)に関連付くSRS用送信電力制御パラメータ(例えば、p0AlphaSetforSRS)が設定される。
・SRSに対して統一TCI状態が設定される。
・SRSに対してTCI状態が設定される。
UEは、SRSの送信電力の算出(例えば、上記式D1)において、第1の項(例えば、PO_SRS,b,f,c(qs))の代わりに、第2の項(例えば、PO_UE_SRS)を用いてもよい。
UEに対し、統一TCI状態に関するPUCCH用送信電力制御パラメータのセット(例えば、p0AlphaSetforPUCCH)が設定/指示されてもよい。
UEは、以下の条件の少なくとも1つが満たされる場合に、本実施形態を適用してもよい:
・特定のUE能力情報が報告の有無(オプション3-1-1)。
・統一TCI状態の設定の有無(オプション3-1-2)。
・統一TCI状態に関するPUCCH用送信電力制御パラメータのセットの設定の有無(オプション3-1-3)。
PO_UE_PUCCHを算出/決定/設定/更新するためのパラメータは、以下の少なくとも1つに基づいてもよい:
・統一TCI状態に関するPUCCH用送信電力制御パラメータのセット(例えば、p0AlphaSetforPUCCH-r17)。
・統一TCI状態に関するPUCCH用送信電力制御パラメータのセット(例えば、p0AlphaSetforPUCCH-r17)における送信電力オフセット(例えば、p0)に関するパラメータ(例えば、p0-r17)。
本実施形態に係る動作が適用されない場合、UEは、統一TCI状態フレームワークに基づく送信電力制御パラメータの設定/更新が、設定/指示されないことを想定/期待してもよい。
UEに対し、統一TCI状態に関するPUCCH用送信電力制御パラメータのセット(例えば、p0AlphaSetforPUCCH)が設定/指示されてもよい。
当該送信電力制御パラメータ(例えば、p0-r17)は、Rel.17までに規定される範囲が拡張された範囲で示されてもよい。
UEは、以下の条件の少なくとも1つが満たされる場合に、本実施形態を適用してもよい:
・特定のUE能力情報が報告の有無(オプション4-2-1)。
・統一TCI状態の設定の有無(オプション4-2-2)。
・統一TCI状態に関するPUCCH用送信電力制御パラメータのセットの設定の有無(オプション4-2-3)。
本実施形態に係る動作が適用されない場合、UEは、統一TCI状態フレームワークに基づく送信電力制御パラメータの設定/更新が、設定/指示されないことを想定/期待してもよい。
[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。
・統一TCI状態フレームワークにおけるSRSの絶対目標電力の決定/更新のサポート。
・統一TCI状態フレームワークにおけるSRSの差分電力の決定/更新のサポート。
・統一TCI状態フレームワークにおけるPUCCHの絶対目標電力の決定/更新のサポート。
・統一TCI状態フレームワークにおけるPUSCHの差分電力の決定/更新のサポート。
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A-1]
複数の信号に適用可能なTransmission Configuration Indication(TCI)状態に関する設定と、絶対電力で示される前記TCI状態に関連付く第1サウンディング参照信号(SRS)送信電力パラメータと、を受信する受信部と、
前記第1SRS送信電力パラメータに基づいて、SRSの送信電力制御を行う制御部と、を有する端末。
[付記A-2]
前記第1SRS送信電力パラメータは、差分電力で示される前記TCI状態に関連付く第2SRS送信電力パラメータの範囲より広い範囲で示される、付記A-1に記載の端末。
[付記A-3]
前記受信部は、さらに、差分電力で示される前記TCI状態に関連付く第2SRS送信電力パラメータを受信し、
前記制御部は、前記第1SRS送信電力パラメータ及び前記第2SRS送信電力パラメータのいずれかを用いて前記SRSの送信電力制御を行う、付記A-1又は付記A-2に記載の端末。
[付記A-4]
前記第1SRS送信電力パラメータは、差分電力で示される前記TCI状態に関連付く第2SRS送信電力パラメータと、他のパラメータと、の組み合わせから構成される、付記A-1から付記A-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B-1]
複数の信号に適用可能なTransmission Configuration Indication(TCI)状態に関する設定と、絶対電力で示される前記TCI状態に関連付く第1物理上りリンク制御チャネル(PUCCH)送信電力パラメータと、を受信する受信部と、
前記第1PUCCH送信電力パラメータに基づいて、PUCCHの送信電力制御を行う制御部と、を有する端末。
[付記B-2]
前記第1PUCCH送信電力パラメータは、差分電力で示される前記TCI状態に関連付く第2PUCCH送信電力パラメータの範囲より広い範囲で示される、付記B-1に記載の端末。
[付記B-3]
前記受信部は、さらに、差分電力で示される前記TCI状態に関連付く第2PUCCH送信電力パラメータを受信し、
前記制御部は、前記第1PUCCH送信電力パラメータ及び前記第2PUCCH送信電力パラメータのいずれかを用いて前記PUCCHの送信電力制御を行う、付記B-1又は付記B-2に記載の端末。
[付記B-4]
前記第1PUCCH送信電力パラメータは、差分電力で示される前記TCI状態に関連付く第2PUCCH送信電力パラメータと、他のパラメータと、の組み合わせから構成される、付記B-1から付記B-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18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19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)
- 複数の信号に適用可能なTransmission Configuration Indication(TCI)状態に関する設定と、絶対電力で示される前記TCI状態に関連付く第1物理上りリンク制御チャネル(PUCCH)送信電力パラメータと、を受信する受信部と、
前記第1PUCCH送信電力パラメータに基づいて、PUCCHの送信電力制御を行う制御部と、を有する端末。 - 前記第1PUCCH送信電力パラメータは、差分電力で示される前記TCI状態に関連付く第2PUCCH送信電力パラメータの範囲より広い範囲で示される、請求項1に記載の端末。
- 前記受信部は、さらに、差分電力で示される前記TCI状態に関連付く第2PUCCH送信電力パラメータを受信し、
前記制御部は、前記第1PUCCH送信電力パラメータ及び前記第2PUCCH送信電力パラメータのいずれかを用いて前記PUCCHの送信電力制御を行う、請求項1に記載の端末。 - 前記第1PUCCH送信電力パラメータは、差分電力で示される前記TCI状態に関連付く第2PUCCH送信電力パラメータと、他のパラメータと、の組み合わせから構成される、請求項1に記載の端末。
- 複数の信号に適用可能なTransmission Configuration Indication(TCI)状態に関する設定と、絶対電力で示される前記TCI状態に関連付く第1物理上りリンク制御チャネル(PUCCH)送信電力パラメータと、を受信するステップと、
前記第1PUCCH送信電力パラメータに基づいて、PUCCHの送信電力制御を行うステップと、を有する端末の無線通信方法。 - 複数の信号に適用可能なTransmission Configuration Indication(TCI)状態に関する設定と、絶対電力で示される前記TCI状態に関連付く第1物理上りリンク制御チャネル(PUCCH)送信電力パラメータと、を送信する送信部と、
前記第1PUCCH送信電力パラメータを用いて、PUCCHの送信電力制御を指示する制御部と、を有する基地局。
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| MINGJU LI, XIAOMI: "Unified TCI framework extension for multi-TRP", 3GPP DRAFT; R1-2211334; TYPE DISCUSSION; NR_MIMO_EVO_DL_UL-CORE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Toulouse, FR; 20221114 - 20221118, 7 November 2022 (2022-11-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052221898 * |
| MINGJU LI, XIAOMI: "Unified TCI framework extension for multi-TRP", 3GPP DRAFT; R1-2300545; TYPE DISCUSSION; NR_MIMO_EVO_DL_UL-CORE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Athens, GR; 20230227 - 20230303, 17 February 2023 (2023-02-17), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052247691 * |
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